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EP0358760A1
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Combustion control method for fluidized bed incinerator
Assignee: Ebara Corp
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Filing: 1988-04-30
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Granted: —
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Expires: 2008-04-30
Abstract
Abstract A combustion control method for a fluidized bed incinerator in which a fluid medium is moved by the air, which is sent from the lower side of a fluidized bed into the incinerator, to burn an object fed thereinto, comprising the steps of detecting the combustion rate of the object burnt in the incinerator, by a combustion rate detecting means, and reducing when the combustion rate is not lower than a predetermined level the flow rate of the air sent from the lower side of the bed into the incinerator, and increasing the flow rate of the air blown into a space above the bed, whereby the combustion rate of the object burnt in the incinerator is maintained at the predetermined level to suppress the variations in the flow rates of the combustion air and exhaust gas, the concentration of oxygen in the exhaust gas and the quantity of unburnt gas. A combustion control method for a fluidized bed incinerator which has a plurality of air chambers at the lower side of a fluidized bed with the air sent into the incinerator through these air chambers, comprising the step of regulating the flow rate of the air, which is sent into the incinerator, by the air chamber which is in a position to which the object to be burnt being input to the incinerator falls, whereby the combustion rate of the object is controlled.
Inventors
- 👤 Takeyuki Turumi Haitu I-202 Naito
- 👤 Yosiki Kuroda
- 👤 Hirosi Yosida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 11:54
CPC Classifications
F; F23; F23N; F23N1/00; F23N1/02; F23N1/022; F23C; F23C10/00; F23C10/18; F23C10/28; F23G; F23G5/00; F23G5/30; F23G5/50; F23N5/00; F23N5/003; F23N5/006; F23G2207/00; F23G2207/10; F23G2207/101; F23G2207/1015; F23G2207/102; F23G2207/103; F23G2207/112; F23G2207/30; F23N2229/00; F23N2229/20; F23N2235/00; F23N2235/02; F23N2235/06; F23N2237/00; F23N2237/18; F23N5/02; F23N5/08
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
132 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: detecting the combustion rate of matter to be burnt in said furnace by a detecting means; reducing the amount of air fed from the lower portion of said fluidized bed when said combustion rate exceeds a predetermined level; and restoring the amount of air fed from said lower portion to its original value when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be burnt in said furnace at said predetermined level.
Claim 2
Dependent Claim
132 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: detecting the combustion rate of matter to be burnt in said furnace by a detecting means; reducing the amount of air fed from the lower portion of said fluidized bed when said combustion rate exceeds a predetermined level; and restoring the amount of air fed from said lower portion to its original value when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be burnt in said furnace at said predetermined level.
Claim 3
Dependent Claim
166 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: detecting the combustion rate of matter to be burnt in said furnace by a detecting means; reducing the amount of air fed from the lower portion of said fluidized bed and simultaneously increasing the amount of air blown into a space above said fluidized bed when said combustion rate exceeds a predetermined level; and restoring the amount of air fed from the lower portion of said fluidized bed to its original value and simultaneously decreasing the amount of air blown into said space above said fluidized bed when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be burnt in said furnace at said predetermined level.
Claim 4
Dependent Claim
166 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: detecting the combustion rate of matter to be burnt in said furnace by a detecting means; reducing the amount of air fed from the lower portion of said fluidized bed and simultaneously increasing the amount of air blown into a space above said fluidized bed when said combustion rate exceeds a predetermined level; and restoring the amount of air fed from the lower portion of said fluidized bed to its original value and simultaneously decreasing the amount of air blown into said space above said fluidized bed when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be burnt in said furnace at said predetermined level.
Claim 5
Dependent Claim
97 words
A combustion control method for application in a fluidized bed incinerator as set forth in Claim 2, wherein the amount of air blown into said space above said fluidized bed is equal to the reduced amount of air fed from the lower portion of said fluidized bed when said combustion rate exceeds said predetermined level, and wherein the reduced amount of air blown into said space above said fluidized bed is equal to the increased amount of air fed from the lower portion of said fluidized bed when said combustion rate is decreased below said predetermined level.
Claim 6
Dependent Claim
49 words
A combustion control method for application in a fluidized bed incinerator as set forth in any of Claims 1 to 3, characterized in that said fluidized bed incinerator is operated at such a superficial velocity that the fluidizing magnification power is in the range of from 1 to 4.
Claim 7
Dependent Claim
58 words
A combustion control method for application in a fluidized bed incinerator as set forth in any one of Claims 1 to 4, characterized in that a combustion rate controlling means is provided with a brightness detecting sensor for detecting an intra-furnace brightness to allow control of said combustion rate based on an output of said brightness detecting sensor.
Claim 8
Dependent Claim
43 words
A combustion control method for application in a fluidized bed incinerator as set forth in Claim 5, characterized in that said brightness detecting sensor of said combustion rate controlling means is disposed above a position where secondary air is blown into the incinerator.
Claim 9
Dependent Claim
174 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing a detecting means for detecting the amount or volume of said matter to be incinerated charged into said furnace; providing a controlling means for controlling combustion rate based on said amount or said volume of said matter to be incinerated charged into said furnace; reducing the amount of air fed from the lower portion of said fluidized bed when said combustion rate of said matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from the lower portion of said fluidized bed to its original value when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 10
Dependent Claim
174 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing a detecting means for detecting the amount or volume of said matter to be incinerated charged into said furnace; providing a controlling means for controlling combustion rate based on said amount or said volume of said matter to be incinerated charged into said furnace; reducing the amount of air fed from the lower portion of said fluidized bed when said combustion rate of said matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from the lower portion of said fluidized bed to its original value when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 11
Dependent Claim
203 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of.a fluidized bed, characterized by comprising the steps of: providing a detecting means for detecting the amount or volume of said matter to be incinerated charged into said furnace; providing a controlling means for controlling combustion rate based on said amount or said volume of said matter to be incinerated charged into said furnace; reducing the amount of air fed from the lower portion of said fluidized bed and simultaneously increasing the amount of air blown into a space above said fluidized bed when said combustion rate of said matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from the lower portion of said fluidized bed to its original value and simultaneously reducing the amount of air blown into said space above said fluidized bed when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 12
Dependent Claim
203 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of.a fluidized bed, characterized by comprising the steps of: providing a detecting means for detecting the amount or volume of said matter to be incinerated charged into said furnace; providing a controlling means for controlling combustion rate based on said amount or said volume of said matter to be incinerated charged into said furnace; reducing the amount of air fed from the lower portion of said fluidized bed and simultaneously increasing the amount of air blown into a space above said fluidized bed when said combustion rate of said matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from the lower portion of said fluidized bed to its original value and simultaneously reducing the amount of air blown into said space above said fluidized bed when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 13
Dependent Claim
153 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing a temperature detecting means for detecting an intra-furnace temperature; providing a controlling means for controlling a combustion rate based on said intra-furnace temperature; reducing the amount of air fed from the lower portion of said fluidized bed when said combustion rate of said matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from said lower portion of said fluidized bed to its original value when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 14
Dependent Claim
153 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing a temperature detecting means for detecting an intra-furnace temperature; providing a controlling means for controlling a combustion rate based on said intra-furnace temperature; reducing the amount of air fed from the lower portion of said fluidized bed when said combustion rate of said matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from said lower portion of said fluidized bed to its original value when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 15
Dependent Claim
182 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing a temperature detecting means for detecting an intra-furnace temperature; providing a controlling means for controlling combustion rate based on said intra-furnace temperature; reducing the amount of air fed from the lower portion of said fluidized bed and simultaneously increasing the amount of air blown into a space above said fluidized bed when the combustion rate of said matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from the lower portion of said fluidized bed to its original value and simultaneously reducing the amount of air blown into said space above said fluidized bed when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 16
Dependent Claim
182 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing a temperature detecting means for detecting an intra-furnace temperature; providing a controlling means for controlling combustion rate based on said intra-furnace temperature; reducing the amount of air fed from the lower portion of said fluidized bed and simultaneously increasing the amount of air blown into a space above said fluidized bed when the combustion rate of said matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from the lower portion of said fluidized bed to its original value and simultaneously reducing the amount of air blown into said space above said fluidized bed when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 17
Dependent Claim
166 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing an oxygen concentration detecting means for detecting the concentration of oxygen contained in exhaust gas; providing a combustion rate controlling means for controlling a combustion rate based on said oxygen concentration in the exhaust gas; reducing the amount of air fed from the lower portion of said fluidized bed when said combustion rate of said matter to be incinerated burnt in said furnace exceeds a predetermined level; and restoring the amount of air fed from said lower portion of said fluidized bed to its original value when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 18
Dependent Claim
166 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing an oxygen concentration detecting means for detecting the concentration of oxygen contained in exhaust gas; providing a combustion rate controlling means for controlling a combustion rate based on said oxygen concentration in the exhaust gas; reducing the amount of air fed from the lower portion of said fluidized bed when said combustion rate of said matter to be incinerated burnt in said furnace exceeds a predetermined level; and restoring the amount of air fed from said lower portion of said fluidized bed to its original value when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 19
Dependent Claim
194 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing an oxygen concentration detecting sensor for detecting the concentration of oxygen contained in exhaust gas; providing a combustion rate controlling means for controlling combustion rate based on the oxygen concentration in the exhaust gas; reducing the amount of air fed from the lower portion of said fluidized bed and simultaneously increasing the amount of air blown into a space above said fluidized bed when said combustion rate of said matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from the lower portion of said fluidized bed to its original value and simultaneously reducing the amount of air blown into said space above said fluidized bed when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 20
Dependent Claim
194 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing an oxygen concentration detecting sensor for detecting the concentration of oxygen contained in exhaust gas; providing a combustion rate controlling means for controlling combustion rate based on the oxygen concentration in the exhaust gas; reducing the amount of air fed from the lower portion of said fluidized bed and simultaneously increasing the amount of air blown into a space above said fluidized bed when said combustion rate of said matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from the lower portion of said fluidized bed to its original value and simultaneously reducing the amount of air blown into said space above said fluidized bed when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 21
Dependent Claim
152 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing.a pressure detecting means for detecting an intra-furnace pressure; providing a combustion rate controlling means for controlling combustion rate based on the intra-furnace pressure; reducing the amount of air fed from the lower portion of said fluidized bed when the combustion rate of matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from said lower portion of said fluidizing bed to its original value when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 22
Dependent Claim
152 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing.a pressure detecting means for detecting an intra-furnace pressure; providing a combustion rate controlling means for controlling combustion rate based on the intra-furnace pressure; reducing the amount of air fed from the lower portion of said fluidized bed when the combustion rate of matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from said lower portion of said fluidizing bed to its original value when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 23
Dependent Claim
184 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing a pressure detecting means for detecting an intra-furnace pressure; providing a combustion rate controlling means for controlling combustion rate based on the intra-furnace pressure; reducing the amount of air fed from the lower portion of said fluidized bed and simultaneously increasing the amount of air blown into a space above said fluidized bed when the combustion rate of said matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from the lower portion of said fluidized bed to its original value and simultaneously reducing the amount of air blown into said space above said fluidized bed when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 24
Dependent Claim
184 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing a pressure detecting means for detecting an intra-furnace pressure; providing a combustion rate controlling means for controlling combustion rate based on the intra-furnace pressure; reducing the amount of air fed from the lower portion of said fluidized bed and simultaneously increasing the amount of air blown into a space above said fluidized bed when the combustion rate of said matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from the lower portion of said fluidized bed to its original value and simultaneously reducing the amount of air blown into said space above said fluidized bed when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 25
Dependent Claim
149 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing a controlling means for controlling combustion rate based on the properties or the like of said matter to be incinerated; reducing the amount of air fed from the lower portion of said fluidized bed when the combustion rate of matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from said lower portion of said fluidizing bed to its original value when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 26
Dependent Claim
149 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing a controlling means for controlling combustion rate based on the properties or the like of said matter to be incinerated; reducing the amount of air fed from the lower portion of said fluidized bed when the combustion rate of matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from said lower portion of said fluidizing bed to its original value when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 27
Dependent Claim
180 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing a controlling means for controlling combustion rate based on the properties or the like of said matter to be incinerated; reducing the amount of air fed from the lower portion of said fluidized bed and simultaneously increasing the amount of air blown into a space above said fluidized bed when the combustion rate of said matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from the lower portion of said fluidized bed to its original value and simultaneously reducing the amount of air blown into said space above said fluidized bed when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 28
Dependent Claim
180 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing a controlling means for controlling combustion rate based on the properties or the like of said matter to be incinerated; reducing the amount of air fed from the lower portion of said fluidized bed and simultaneously increasing the amount of air blown into a space above said fluidized bed when the combustion rate of said matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from the lower portion of said fluidized bed to its original value and simultaneously reducing the amount of air blown into said space above said fluidized bed when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 29
Dependent Claim
176 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing a brightness detecting means for detecting an intra-furnace brightness and a pressure detecting means for detecting an intra-furnace pressure; providing a combustion rate controlling means for controlling combustion rate based on the larger of the outputs obtained by said brightness detecting means and said pressure detecting means; reducing the amount of air fed from the lower portion of said fluidized bed when the combustion rate of matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from the lower portion of said fluidized bed to its original value when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 30
Dependent Claim
176 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing a brightness detecting means for detecting an intra-furnace brightness and a pressure detecting means for detecting an intra-furnace pressure; providing a combustion rate controlling means for controlling combustion rate based on the larger of the outputs obtained by said brightness detecting means and said pressure detecting means; reducing the amount of air fed from the lower portion of said fluidized bed when the combustion rate of matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from the lower portion of said fluidized bed to its original value when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 31
Dependent Claim
209 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing a brightness detecting means for detecting an intra-furnace brightness and a pressure detecting means for detecting an intra-furnace pressure; providing a combustion rate controlling means for controlling a combustion rate based on the larger of the outputs obtained by the said brightness detecting means and said pressure detecting means; reducing the amount of air fed from the lower portion of said fluidized bed and simultaneously increasing the amount of air blown into a space above said fluidized bed when the combustion rate of said matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from the lower portion of said fluidized bed to its original value and simultaneously reducing the amount of air blown into said space above said fluidized bed when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 32
Dependent Claim
209 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing a brightness detecting means for detecting an intra-furnace brightness and a pressure detecting means for detecting an intra-furnace pressure; providing a combustion rate controlling means for controlling a combustion rate based on the larger of the outputs obtained by the said brightness detecting means and said pressure detecting means; reducing the amount of air fed from the lower portion of said fluidized bed and simultaneously increasing the amount of air blown into a space above said fluidized bed when the combustion rate of said matter to be incinerated in said furnace exceeds a predetermined level; and restoring the amount of air fed from the lower portion of said fluidized bed to its original value and simultaneously reducing the amount of air blown into said space above said fluidized bed when said combustion rate decreases below said predetermined level so as to control and maintain said combustion rate of said matter to be incinerated in said furnace at said predetermined level.
Claim 33
Dependent Claim
56 words
A combustion control method for application in a fluidized bed incinerator as set forth in any one of Claims 1 to 17, characterized in that said fluidized bed incinerator is constructed to include a plurality of air chambers provided at the lower portion of said fluidized bed, through which chambers air is fed into the incinerator.
Claim 34
Dependent Claim
114 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing a plurality of air chambers at the lower portion of said fluidized bed of said fluidized bed incinerator, through which chambers air is fed thereinto; and regulating the amount of air fed through the air chamber disposed at the portion where said matter to be incinerated that is charged is dropped so as to control the rate of combustion of said matter to be incinerated.
Claim 35
Dependent Claim
114 words
A combustion control method for application in a fluidized bed incinerator for burning matter to be incinerated charged into a furnace by causing fluidization of a fluidizing medium with the assistance of air fed from the lower portion of a fluidized bed, characterized by comprising the steps of: providing a plurality of air chambers at the lower portion of said fluidized bed of said fluidized bed incinerator, through which chambers air is fed thereinto; and regulating the amount of air fed through the air chamber disposed at the portion where said matter to be incinerated that is charged is dropped so as to control the rate of combustion of said matter to be incinerated.
Claim 36
Dependent Claim
58 words
A combustion control method for application in a fluidized bed incinerator as set forth in Claim 20, wherein an amount of air equivalent to the reduced amount of air fed from the air chamber disposed at the portion where said matter to be incinerated that is charged is dropped is blown into a space above said fluidized bed.
Claim 37
Dependent Claim
63 words
A combustion control method for application in a fluidized bed incinerator as set forth in Claim 21, characterized in that the amount of air fed from said air chamber disposed at the portion where said matter to be incinerated that is charged is dropped is reduced while an amount of air equivalent to the reduced amount is fed from the other air chambers.
Claim 38
Dependent Claim
47 words
A combustion control method for application in a fluidized bed incinerator as set forth in any one of Claims 1 to 22, wherein the constituents of said matter to be incinerated are different from each other in calorific value and properties such as combustibility, configuration and volume.
Claim 39
Dependent Claim
43 words
A combustion control method for application in a fluidized bed incinerator as set forth in any one of Claims 1 to 23, characterized in that said matter to be incinerated which is charged comprises coal, industrial scraps and municipal refuse or mixtures thereof.
Claim 40
Dependent Claim
32 words
A combustion control method for application in a fluidized bed incinerator as set forth in any one of Claims 1 to 24, wherein said fluidized bed incinerator involves a fluidized bed boiler.
References Cited (Backward Citations)
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