[특허]Multifuel bubbling bed fluidized bed combustor system

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F23G-007/00
출원번호	US-0193152 (1988-05-05)
발명자 / 주소	Wormer Alex F. (Marblehead MA)
출원인 / 주소	Wormser Engineering, Inc. (Woburn MA 02)
인용정보	피인용 횟수 : 52 인용 특허 : 28

초록 ▼

In order to be able to handle multiple fuels in a bubbling-bed fluidized bed combustor, a number of elements are combined together and a number of systems are described which utilize these elements in order to be able to appropriately process different types of fuels. With respect to the handling of

In order to be able to handle multiple fuels in a bubbling-bed fluidized bed combustor, a number of elements are combined together and a number of systems are described which utilize these elements in order to be able to appropriately process different types of fuels. With respect to the handling of multiple fuels by a bubbling-bed fluidized bed combustor which need not be reconfigured for each type of fuel, the combustor in the subject invention is provided with a closely-coupled pyrolyzer or gasifier. The close-coupled pyrolyzer not only permits the processing of virtually any type of fuel into two fuel streams which are immediately usable by the combustor but also has certain advantages in terms of reducing environmental pollutants. The above-mentioned close-coupled pyrolyzer also results in improved performance aside from the pollution aspects mentioned above. The close coupling of the pyrolyzer to the fluidized bed combustor also allows fluid bed combustion systems to be built in larger capacity than heretofore possible. In one aspect of the subject invention, the close-coupled pyrolyzer permits the production of higher temperature flue gases than would be done with a fluidized bed combustor without the pyrolyzer. The subject invention also allows the use of high-moisture fuels and avoids the efficiency loss, output loss and the increased boiler size that is normally associated with those fuels. The above advantages of the close-coupled pyrolyzer are improved by the provision of some specially designed auxiliary apparatus, such as a specialized deep-bed pyrolyzer, a specialized screw feeding system and the utilization of under-the-bed cooling tubes in a fluidized bed combustor. The above has detailed the building blocks useful in numerous types of systems, three of which will be described hereinafter; namely, a system for processing refuse-derived fuels, a system for processing hazardous fuels and combined-cycle gas.

대표청구항 ▼

Apparatus for generating heat, said apparatus comprising: a fluidized bed pyrolyzer comprising: a pyryolyzer vessel; means for supporting a pyrolyzer bed of granular material within said pyrolyzer vessel; means for fluidizing said pyrolyzer bed; means for adding fuel to said pyrolyzer bed; means for

Apparatus for generating heat, said apparatus comprising: a fluidized bed pyrolyzer comprising: a pyryolyzer vessel; means for supporting a pyrolyzer bed of granular material within said pyrolyzer vessel; means for fluidizing said pyrolyzer bed; means for adding fuel to said pyrolyzer bed; means for removing gaseous effluents from said pyrolyzer vessel; and means for removing bed material from said pyrolyzer bed; a fluidized bed combustor comprising: a combustor vessel; means for supporting a combustor bed of granular material within said combustor vessel; means for adding the gaseous effluents removed from said pyrolyzer bed to said combustor bed; means for adding granular material to said combustor bed; means for removing gaseous effluents from said combustor vessel; means for removing bed material from said combustor; a heat exchanger comprising a vessel; means for ading gaseous effluents to, and means for removing gaseous effluents from, said heat exchanger vessel, and means for adding an exchange coolant to, and means for removing an exchange coolant from, said heat exchanger vessel; particulate collector means connected to said heat exchanger for removing particulate matter from said gaseous effluents removed from said heat exchanger; and stack means connected to said particulate collector for releasing said gaseous effluents removed from said heat exchanger to the atmosphere; means for conveying gaseous effluents from said pyrolyzer to said combustor bed; means for conveying combustor bed material from said combustor bed to said pyrolyzer at a rate sufficient to pyrolyzer said fuel; means for conveying pyrolyzer bed material from said pyrolyzer bed to said combustor bed at a rate sufficient to maintain the bed level in the pyrolyzer at a predetermined level; and means for conveying gaseous effluents from said combustor vessel to said heat exchanger; a second fluidized bed located within said combustor vessel; said second combustor bed being supported by a distributor plate mounted within said combustor vessel; said second fluidized bed being located above the freeboard of said combustion bed; means for conveying said effluent gases leaving said combustor bed to said second fluidized bed through passages in said second bed distributor plate; means for conveying said effluent gases leaving said second bed to said heat exchanger; means for adding solids to said second bed; and means for removing solids from said second bed.

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이 특허에 인용된 특허 (28) 인용/피인용 타임라인 분석

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[미국특허] Multifuel bubbling bed fluidized bed combustor system 원문보기

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[미국특허] Multifuel bubbling bed fluidized bed combustor system 원문보기

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