Arrangement for and method of gasifying solid fuel
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C10J-003/72
C10J-003/56
C10J-003/84
C10J-003/86
C10K-001/04
C10K-003/00
F23G-005/027
F23G-005/30
F28D-013/00
F28D-021/00
출원번호
US-0990437
(2011-12-19)
등록번호
US-9296963
(2016-03-29)
우선권정보
FI-20106344 (2010-12-20)
국제출원번호
PCT/FI2011/051135
(2011-12-19)
§371/§102 date
20130625
(20130625)
국제공개번호
WO2012/085345
(2012-06-28)
발명자
/ 주소
Berg, Eero
출원인 / 주소
AMEC FOSTER WHEELER ENERGIA OY
대리인 / 주소
Fitzpatrick, Cella, Harper & Scinto
인용정보
피인용 횟수 :
0인용 특허 :
13
초록▼
An arrangement for gasifying solid fuel includes a gasification reactor for producing further oxidizable product gas from solid fuel and a gas treatment reactor arranged in a flow direction of the product gas in gas flow connection with the gasification reactor. The gas treatment reactor includes a
An arrangement for gasifying solid fuel includes a gasification reactor for producing further oxidizable product gas from solid fuel and a gas treatment reactor arranged in a flow direction of the product gas in gas flow connection with the gasification reactor. The gas treatment reactor includes a supply for supplying oxygenous gas to the gas treatment reactor for partial oxidization of product gas and for thermal cracking thereof. A radiation heat exchange cooler for cooling the product gas is arranged in connection with the gas treatment reactor to solidify melt components in the product gas. A discharge connection is arranged in the lower portion of the radiation heat exchange cooler for removing solidified melt components from the radiation heat exchange cooler. A method of gasifying solid fuel in a gasification reactor is also presented.
대표청구항▼
1. An arrangement for gasifying solid fuel, the arrangement comprising: a gasification reactor for producing oxidizable product gas from solid fuel;a gas treatment reactor, arranged in a flow direction of the product gas, in gas flow connection with the gasification reactor, the gas treatment reacto
1. An arrangement for gasifying solid fuel, the arrangement comprising: a gasification reactor for producing oxidizable product gas from solid fuel;a gas treatment reactor, arranged in a flow direction of the product gas, in gas flow connection with the gasification reactor, the gas treatment reactor being a vertical reactor and comprising a supply for supplying oxygenous gas to the gas treatment reactor for partial oxidization and thermal cracking of the product gas, wherein (i) an upper portion of the gas treatment reactor is provided with an inlet for supplying the product gas to the gas treatment reactor, and a lower portion thereof is provided with a radiation heat exchange cooler enabling to cool the product gas by radiation heat exchange in such a way that melted components in the product gas solidify to solidified components, and (ii) wherein the radiation heat exchange cooler includes walls having heat exchange surfaces and defining a gas space in the radiation heat exchange cooler, the gas space being a substantially free space; anda discharge connection arranged in a lower portion of the radiation heat exchange cooler for removing the solidified components from the radiation heat exchange cooler. 2. An arrangement in accordance with claim 1, wherein the upper portion of the gas treatment reactor comprises a refractory coating. 3. An arrangement in accordance with claim 1, wherein the lower portion of the radiation heat exchange cooler is provided with a turn chamber for the gas flow, a lower portion of he turn chamber being provided with the discharge connection, and the turn chamber being provided with a gas discharge opening in such a manner that the gas flow direction substantially changes in the turn chamber. 4. An arrangement in accordance with claim 3, wherein the gas discharge opening is connected with a convection boiler, which comprises at least one heat exchanger. 5. An arrangement in accordance with claim 4, wherein the at least one heat exchanger is arranged directly above a bottom portion of the convection boiler and a bottom portion of the convection boiler is provided with a conveyor for conveying solid material. 6. An arrangement in accordance with claim 5, wherein the conveyor is arranged to convey solid material from the bottom portion of the convection boiler to the lower portion of the turn chamber, arranged in the lower portion of the radiation heat exchange cooler. 7. An arrangement in accordance with claim 1, wherein the gasification reactor is a circulating fluidized bed reactor comprising a solids separator, a gas discharge connection of which is in gas flow connection with the gas treatment reactor. 8. A method of gasifying solid fuel in a gasification reactor, the method comprising: producing oxidizable product gas from gasification of solid fuel in a gasification reactor;leading the product gas from the gasification reactor to an upper portion of a vertical gas treatment reactor, which is supplied with oxygenous gas, so that the product gas is partially oxidized and its temperature is increased, to thereby achieve thermal cracking of the components of the product gas, wherein solid components of the product gas are at least one of melted and softened to become sticky, forming melt components;directing the product gas from the gas treatment reactor to a radiation heat exchange cooler formed of walls of a lower portion of the gas treatment reactor having heat exchange surfaces and defining a gas space in the radiation heat exchange cooler, the gas space being a substantially free space, arranged in the lower portion of the gas treatment reactor, in which radiation heat exchange cooler the temperature of the product gas is diminished by radiation heat exchange in such a way that melt components in the product gas are solidified; anddischarging the solidified components from the radiation heat exchange cooler in a solid form through a discharge connection arranged in a lower portion of the radiation heat exchange cooler. 9. A method in accordance with claim 8, further comprising guiding the product gas to flow in the gas treatment reactor substantially vertically from up downwards, and that in the lower portion of the radiation heat exchange cooler, the direction of the product gas flow is changed, whereafter the product gas flow is redirected to a convection boiler. 10. A method in accordance with claim 9, further comprising conducting the oxidizable product gas from the radiation heat exchange cooler to the convection boiler, to at least one heat exchanger, of which the at least one of the melted and sticky softened, non-decomposed solid components of the product gas are further brought to stick. 11. A method in accordance with claim 10, further comprising removing solid components stuck on the at least one heat exchanger from the at least one heat exchanger and guiding the removed solid components to a bottom portion underneath the heat exchanger to be removed from the convection boiler. 12. A method in accordance with claim 8, wherein the oxidizable product gas is produced from solid fuel combusted in a fluidized bed. 13. A method according to claim 12, further comprising at least partially controlling the material composition of the fluidized bed based on at least one of the melting and softening behavior of the gas components taking place in the gas treatment reactor.
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이 특허에 인용된 특허 (13)
Mathiesen Mihkel (Summit NJ) Nystrm Olle (Hgans SEX), Composition and a method of capturing sulphur.
Holle, Bernd; Schingnitz, Manfred; Fischer, Norbert, Gasification method and device for producing synthesis gases by partial oxidation of fuels containing ash at elevated pressure with partial quenching of the crude gas and waste heat recovery.
Schingnitz, Manfred; Holle, Bernd; Fischer, Norbert, Method and device for producing synthesis gases by partial oxidation of slurries prepared from fuels containing ash and full quenching of the crude gas.
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