US3868779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incineration control
Assignee: Salem Corp
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Filing: 1973-09-13
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Granted: 1975-03-04
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Expires: 1993-09-13
Abstract
Abstract The specification discloses and describes a method and means for determining concentration of evaporated solvent in gases emitted from a drying oven and delivered to an incinerator, by simple measurement of the temperature of gases constituting products of combustion exhausted from the incinerator. By maintaining the fuel input to the incinerator constant and also maintaining the temperature of the gases entering the incinerator constant, the variation of the temperature of the products of combustion emitted from the incinerator with respect to a standard value reflects the variation in the concentration of evaporated solvents supplied to the incinerator. A valve means, responsively controlled according to the temperature of the products of combustion emitted from the incinerator, functions to regulate the admission of a diluent, such as air, to the oven, thereby regulating the concentration of evaporated solvent to a substantially constant and safe value and effecting regulation of a uniform temperature of gas products of combustion at the outlet of the incinerator.
Inventors
- 👤 Jr Charles R Wilt
- 👤 Floyd L Schauermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:57
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/50; F26; F26B; F26B23/00; F26B23/02; F26B23/022
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
107 words
In a drying oven of the type having at least one zone in which solvents are evaporated during the drying process and exhausted with other gases to an incinerator for incineration, the improvement which comprises: a. means providing a constant rate of supply of fuel to the incinerator, b. means regulating the temperature of the gases emitted from the oven during the drying process to a constant value, and c. means controlling the quantity of air admitted to the oven as a diluent for the solvents in accordance with the variation of the temperature of the gases constituting the products of combustion of the incinerator exhausted therefrom.
Claim 2
Dependent Claim
107 words
In a drying oven of the type having at least one zone in which solvents are evaporated during the drying process and exhausted with other gases to an incinerator for incineration, the improvement which comprises: a. means providing a constant rate of supply of fuel to the incinerator, b. means regulating the temperature of the gases emitted from the oven during the drying process to a constant value, and c. means controlling the quantity of air admitted to the oven as a diluent for the solvents in accordance with the variation of the temperature of the gases constituting the products of combustion of the incinerator exhausted therefrom.
Claim 3
Dependent Claim
101 words
In a drying oven according to claim 1, wherein conduit means is provided for recirculating back to the oven a portion of the products of combustion of the incinerator, and wherein the temperature regulating means of clause (b) comprises valve means in said conduit means and thermally-responsive means exposed to the gases emitted from the oven which controls the operation of said valve means to so regulate the quantity of products of combustion of the incinerator admitted as a solvent diluent to the oven as to regulate to a substantially constant value the temperature of the gases emitted from the oven.
Claim 4
Dependent Claim
66 words
In a drying oven according to claim 1, wherein said oven comprises a radiant baffle to which gases comprising products of combustion of the incinerator are supplied, and temperature controlled means responsive to the radiant temperature of the said baffle for so controlling the admission of the gases comprising products of combustion of the incinerator to the baffle as to maintain a substantially constant radiant temperature.
Claim 5
Dependent Claim
39 words
In a drying oven according to claim 1, wherein the oven has a plurality of drying zones, and wherein a portion of the products of combustion of the incinerator are recirculated through subsequent zones back to an initial zone.
Claim 6
Dependent Claim
39 words
In a drying oven according to claim 3, wherein said oven comprises a heat recuperating means, and said temperature controlled means comprises valve means controlling the admission of products of combustion of the incinerator to said heat recuperating means.
Claim 7
Dependent Claim
32 words
In a drying oven according to claim 4, wherein temperature controlled valve means is provided for controlling the proportions of products of combustion of the incinerator supplied to the respective subsequent zones.
Claim 8
Dependent Claim
94 words
In a drying oven according to claim 4 wherein a blower is provided for each subsequent zone to supply a mixture of recirculated products of combustion of the incinerator and zone gases from the corresponding zone back to the same zone, wherein valve means regulates the flow of products of combustion to the blower, and wherein temperature controlled means responsive to the temperature of the gas mixture returned to the zone by the blower controls said valve means to regulate the proportion of products of combustion relative to zone gases returned to the zone.
Claim 9
Dependent Claim
115 words
In a drying oven of the type having at least one zone in which combustible materials are evolved from the product being dried during the drying process and exhausted in a gaseous stream to an incinerator for incineration, the improvement which comprises: a. means providing a constant rate of supply of fuel to the incinerator, b. means regulating the temperature of the gases emitted from the oven during the drying process to a constant value, and c. means controlling the quantity of air admitted to the oven as a diluent for the combustible materials in accordance with the variation of the temperature of the gases constituting the products of combustion of the incinerator exhausted thereform.
Claim 10
Dependent Claim
115 words
In a drying oven of the type having at least one zone in which combustible materials are evolved from the product being dried during the drying process and exhausted in a gaseous stream to an incinerator for incineration, the improvement which comprises: a. means providing a constant rate of supply of fuel to the incinerator, b. means regulating the temperature of the gases emitted from the oven during the drying process to a constant value, and c. means controlling the quantity of air admitted to the oven as a diluent for the combustible materials in accordance with the variation of the temperature of the gases constituting the products of combustion of the incinerator exhausted thereform.
Claim 11
Dependent Claim
108 words
In a drying oven accoRding to claim 8, wherein conduit means is provided for recirculating back to the oven a portion of the products of combustion of the incinerator, and wherein the temperature regulating means of clause (b) comprises valve means in said conduit means and thermally-responsive means exposed to the gaseous stream emitted from the oven which controls the operation of said valve means to so regulate the quantity of products of combustion of the incinerator admitted to the oven as a diluent for the combustible materials therein so as to regulate to a substantially constant value the temperature of the gaseous stream emitted from the oven.
Claim 12
Dependent Claim
66 words
In a drying oven according to claim 8, wherein said oven comprises a radiant baffle to which gases comprising products of combustion of the incinerator are supplied, and temperature controlled means responsive to the radiant temperature of the said baffle for so controlling the admission of the gases comprising products of combustion of the incinerator to the baffle as to maintain a substantially constant radiant temperature.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |