US3659829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for adjustment of the heat generating process in a rotary kiln with a heat exchanger etc.
Assignee: Prerovske Strojirny np
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Filing: 1970-09-28
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Granted: 1972-05-02
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Expires: 1990-09-28
Abstract
Abstract A rotary kiln system employing a pre-heater for feeding material to the kiln. A temperature sensing device is placed in the gas outlet of the rotary kiln and control means are provided to regulate the rate of feed of raw material to the pre-heater in response to variations in sensed temperature from a predetermined level.
Inventors
- 👤 Jaroslav Pospisil
- 👤 Josef Plsek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:01
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/20; F27B7/42
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
117 words
The method of controlling the uniformity of the heat generating process in kiln apparatus having a feed mechanism for supplying raw material, a pre-heater, and a rotary kiln arranged in tandem with each other, said material passing through said pre-heater into said kiln and effluent combustion gases passing in a counter flow from said kiln into said pre-heater, comprising the steps of sensing the temperature of the gas effluent from said kiln, and controlling the feEd of said raw material to said kiln at the point between said rotary kiln and said pre-heater when the combustion gases exit and the raw material enters the kiln in response to variations in said sensed temperature from a predetrmined level.
Claim 2
Independent Claim
117 words
The method of controlling the uniformity of the heat generating process in kiln apparatus having a feed mechanism for supplying raw material, a pre-heater, and a rotary kiln arranged in tandem with each other, said material passing through said pre-heater into said kiln and effluent combustion gases passing in a counter flow from said kiln into said pre-heater, comprising the steps of sensing the temperature of the gas effluent from said kiln, and controlling the feEd of said raw material to said kiln at the point between said rotary kiln and said pre-heater when the combustion gases exit and the raw material enters the kiln in response to variations in said sensed temperature from a predetrmined level.
Claim 3
Dependent Claim
28 words
The method according to claim 1 wherein the temperature of said effluent gas is continuously sensed and the rate of feed of said raw material is continuously controlled.
Claim 4
Dependent Claim
103 words
Apparatus for controlling the combustion process of kilns having a feed mechanism for raw material, a pre-heater and a rotary kiln arranged in tandem with each other, said material passing from said pre-heater into said rotary kiln and the gases of combustion counter-flowing from said kiln into said pre-heater, comprising a temperature sensing device located at the point of gas outlet and material inlet of said rotary kiln, and means responsive to said sensing device for controlling the feed mechanism to regulate the feeding of said raw material to said kiln with respect to said variations in the temperature of the gas sensed.
Claim 5
Dependent Claim
103 words
Apparatus for controlling the combustion process of kilns having a feed mechanism for raw material, a pre-heater and a rotary kiln arranged in tandem with each other, said material passing from said pre-heater into said rotary kiln and the gases of combustion counter-flowing from said kiln into said pre-heater, comprising a temperature sensing device located at the point of gas outlet and material inlet of said rotary kiln, and means responsive to said sensing device for controlling the feed mechanism to regulate the feeding of said raw material to said kiln with respect to said variations in the temperature of the gas sensed.
Claim 6
Dependent Claim
51 words
The apparatus according to claim 3 wherein said temperature sensing means comprises a thermomter mounted at the feed inlet to said rotary kiln, and said control means comprises a circuit including a transducer and signal generating means for operating said feed mechanism to regulate the rate of flow of said feed.
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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |