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US3789104A Expired / Lapsed US ⏱️ 0.0 years remaining

Control method for fume incinerators

Assignee: SCM Corp
•
Filing: 1971-02-25
•
Granted: 1974-01-29
•
Expires: 1991-02-25
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Abstract

Abstract Improved process and apparatus are shown for incineration of combustible fumes to suppress deleterious, uncontrolled combustion of said fumes from the occurrence of an adventitious, transient fume overload. In response to upward deviation from a preselected incineration temperature, the fume feed flow is automatically throttled to bypass the incineration zone while the flow of primary incineration fuel has been automatically diminished, but at most only to a point short of the extinction of its combustion, thereby relieving the overload condition without disruptive operational discontinuity. An automatic temperature controller provides the particular sequential throttling control impulse to automatic throttling valves on primary fuel and bypass for this purpose, and also to an automatic throttling valve on flow of fume diluent vapors, if desired.

Inventors

  • 👤 A Mccauley

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 04:06
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/50

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 35 words
A process as defined in claim 1 wherein said flow of primary fuel is at a minimum level close to extinction for combustion of the fuel while fumes are being diverted during a transient overload.
Claim 2
Dependent Claim 23 words
A process as defined in claim 1 wherein the portion of fumes being diverted is varied as a function of the transient overload.
Claim 3
Dependent Claim 34 words
A process as defined in claim 3 wherein said flow of primary fuel is at a level close to extinction for combustion of the fuel while fumes are being diverted during a transient overload.
Claim 4
Dependent Claim 25 words
A process as defined in claim 3 wherein the flow of primary fuel is stopped after the diversion of said fumes reaches a predetermined maximum.
Claim 5
Dependent Claim 39 words
A process as defined in claim 5 wherein said flow of primary fuel is at a level close to extinction for combustion of the fuel while fumes are being diverted and before the diversion reacHes the said predetermined maximum.
Claim 6
Dependent Claim 40 words
A process as defined in claim 1 wherein the fumes are diluted with a diluent vapor and the flow of vapor is increased when a fume overload occurs and the temperature in said zone is at substantially said predetermined level.
Claim 7
Dependent Claim 36 words
A process as defined in claim 7 wherein said flow of primary fuel is at a level close to extinction for combustion of the fuel while the fumes are being diverted during a transient fuel overload.
Claim 8
Dependent Claim 88 words
A process of claim 7 wherein said diluent vapor comprises molecular oxygen, and the process is automatically controlled in response to a rise in temperature in the incineration zone tending to exceed said predetermined level to effect the following: a. the maintaining of the flow of primary fuel at its said minimum level, b. the increasing of the flow of the diluent vapor, and c. the diverting of fumes from said zone at a variable rate dependent on overload the flow of fumes mixed with said diluent vapor.
Claim 9
Dependent Claim 17 words
The process of claim 9 wherein said predetermined temperature level is between about 800* and 2,500* Fahrenheit.
Claim 10
Dependent Claim 16 words
The process of claim 9 wherein the diversion temperature is between about 1,100* and 1,400* Fahrenheit.
Claim 11
Dependent Claim 18 words
The process as defined in claim 1 wherein said predetermined level is between about 1,100* and 1,400* Fahrenheit.

References Cited (Backward Citations)

US1995723A Cited
US2546013A Cited
US3472498A Cited
US3595181A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-01-28 1977-07-30 1978-01-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-01-28 1981-07-30 1982-01-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-01-28 1985-07-30 1986-01-29 $7700.00 Window Closed / Lapsed

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