[특허]Method and apparatus for controlling a gasifier

[미국특허] Method and apparatus for controlling a gasifier 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F22D-005/28 G05B-001/00
출원번호	US-0439969 (1982-11-08)
발명자 / 주소	Snyder Troxell K. (South Windsor CT) Chase Paul H. (East Granby CT)
출원인 / 주소	Combustion Engineering, Inc. (Windsor CT 02)
인용정보	피인용 횟수 : 43 인용 특허 : 5

초록 ▼

Fuel and oxidant feed rates into a gasifier 202 are regulated by monitoring overall output 14 and comparing with a pre-selected setpoint valve 10. An overall load demand signal 50, responsive to this comparision is generated and used as an input to control 102 oxidant feed rate. The heating value of the product gas is measured 76 and used to control 64 overall fuel feed rate to the gasifier 202. For a two stage slagging gasifier, the present invention controls 114 fuel feed rate to the slagging stage 210 responsive to the measured slagging stage reaction temperature 128.

대표청구항 ▼

A method for controlling the feed rate of fuel and the feed rate of oxidant into a gasifier for producing a product fuel gas, wherein a portion of the energy output of said gasifier is employed to generate steam for driving a steam turbine for the production of electric power, comprising the steps of: throttling said steam turbine to achieve a desired electrical output level; determining a desired product gas heating value as a function of a load demand signal; measuring the actual product gas heating value; measuring the pressure of the unthrottled steam; comparing the measured steam pressure with a predetermined pressure setpoint; generating the load demand signal responsive to any difference between the measured steam pressure and the predetermined setpoint; comparing the desired and actual product gas heating values; adjusting the fuel feed rate into said gasifier to compensate for any difference between the measured and the actual product gas heating values; adjusting the oxidant feed rate into said gasifier in response to the load demand signal. An apparatus for controlling the feed rate of fuel and the feed rate of oxidant into a gasifier for producing a product fuel gas, wherein a portion of the energy output of said gasifier is employed to generate steam for driving a steam turbine for producing electric power, comprising: a throttle for regulating said steam turbine for producing a desired amount of electric power; means for generating a signal commensurate with the desired product gas heating value in response to a load demand signal; means for generating a signal commensurate with the actual product gas heating value; means responsive to the desired and actual heating value signals for generating a heating value error signal; means responsive to the heating value error signal for adjusting the fuel feed rate; means for generating a signal commensurate with the pressure of said steam at a location upstream of said throttle; means responsive to the pressure signal and a desired pressure setpoint for generating a pressure error signal; means responsive to the pressure error signal for generating the load demand signal; and means responsive to the load demand signal for adjusting said oxidant feed rate.

이 특허에 인용된 특허 (5) 인용/피인용 타임라인 분석

Stern Louis P. (Pittsburgh PA), Boiler control having a heating value computer and providing improved operation with fuels having variable heating value.
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Foster-Pegg ; Richard W., Gasifier-combined cycle plant.
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Blaskowski Henry J. (West Simsbury CT), Method of operating a coal gasifier.
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이 특허를 인용한 특허 (43) 인용/피인용 타임라인 분석

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Fu, Xu; Hu, Zhongzhi; Zhao, Tong; Cai, Zili; Chen, Yao; Huang, Baoming; Chen, Wei; Liu, Ke, Control systems and methods for controlling a dry feed system to convey a solid fuel.
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Gurin, Michael H., Hybrid power systems.
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Kamohara, Satoru; Sonoda, Takashi; Takashima, Yasuhiro; Kitagawa, Yuichiro, Integrated gasification combined cycle and operation control method thereof.
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Tsangaris, Andreas; Basham, Scott Douglas; Campbell, Kenneth Craig; Chotaliya, Ashish; Cui, Mao Pei; Dobbs, Geofrey; Feasby, Douglas Michael; Marceau, Pascale Bonnie; McLean, Alisdair Alan; Shen, Zhiyuan; Soni, Nipun; Wagler, Thomas Edward; Zou, Xiaoping; Swain, Margaret, Low temperature gasification facility with a horizontally oriented gasifier.
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Tsangaris, Andreas; Campbell, Kenneth Craig; Feasby, Douglas Michael; Wagler, Thomas Edward; McLean, Alisdair Alan; Basham, Scott Douglas; Cui, Mao Pei; Shen, Zhiyuan; Chotaliya, Ashish; Soni, Nipun; Dobbs, Geoffrey; Marceau, Pascale Bonnie; Zou, Xiaoping, Low temperature gasification facility with a horizontally oriented gasifier.
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Schmidt, Darren D., Method and apparatus for supply of low-Btu gas to an engine generator.
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D'Agostini, Mark Daniel, Method for gasification and a gasifier.
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Kalina, Alexander I., Methods and systems for optimizing the performance of rankine power system cycles.
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Wallace Paul S. ; Johnson Kay A. ; Fair Delome D., Oxygen flow control for gasification.
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Kleinhenz Ned J. (Beavercreek OH) Gaunce Alvin L. (Pointe Claire MI CAX) Schmall Robert A. (Temperance MI) Schultz Thomas J. (Maumee OH), Pyrolyzer-kiln system.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Method and apparatus for controlling a gasifier 원문보기