Biomass compositions for catalytic gasification
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C01B-003/38
C01C-001/02
C01B-031/18
C01B-031/20
C01B-017/16
C01B-003/32
C10L-005/40
C10L-005/42
C10L-005/44
출원번호
US-0395447
(2009-02-27)
등록번호
US-8652222
(2014-02-18)
발명자
/ 주소
Raman, Pattabhi K.
Hippo, Edwin J.
Yee, Nelson
출원인 / 주소
GreatPoint Energy, Inc.
대리인 / 주소
McDonnell Boehnen Hulbert & Berghoff LLP
인용정보
피인용 횟수 :
0인용 특허 :
239
초록▼
Particulate compositions are described comprising an intimate mixture of a biomass, such as switchgrass or hybrid poplar, a non-biomass carbonaceous material, such as petroleum coke or coal, and a gasification catalyst, where the gasification catalyst is loaded onto at least one of the biomass or no
Particulate compositions are described comprising an intimate mixture of a biomass, such as switchgrass or hybrid poplar, a non-biomass carbonaceous material, such as petroleum coke or coal, and a gasification catalyst, where the gasification catalyst is loaded onto at least one of the biomass or non-biomass for gasification in the presence of steam to yield a plurality of gases including methane and at least one or more of hydrogen, carbon monoxide, and other higher hydrocarbons are formed. Processes are also provided for the preparation of the particulate compositions and converting the particulate composition into a plurality of gaseous products.
대표청구항▼
1. A process for preparing a particulate composition, the process comprising the steps of: (a) providing a first particulate carbonaceous feedstock that is a biomass, a second particulate carbonaceous feedstock that is a non-biomass, and an alkali metal gasification catalyst which, in the presence o
1. A process for preparing a particulate composition, the process comprising the steps of: (a) providing a first particulate carbonaceous feedstock that is a biomass, a second particulate carbonaceous feedstock that is a non-biomass, and an alkali metal gasification catalyst which, in the presence of steam and under suitable temperature and pressure, exhibits gasification activity whereby a plurality of gases including methane and at least one or more gases selected from the group consisting of hydrogen, carbon monoxide, carbon dioxide, hydrogen sulfide, ammonia and other higher hydrocarbons are formed from the particulate composition;(b) mixing the first particulate carbonaceous feedstock, the second particulate carbonaceous feedstock and, the alkali metal gasification catalyst to form a mixture; and(c) optionally thermally treating the mixture under a flow of inert dry gas to form the particulate composition, wherein the gasification catalyst comprises a source of at least one alkali metal and is present in an amount sufficient to provide, in the particulate composition, a ratio of alkali metal atoms of the gasification catalyst to carbon atoms ranging from about 0.01 to about 0.10. 2. The process according to claim 1, wherein the first carbonaceous feedstock and second carbonaceous feedstock are contacted with an aqueous solution comprising the gasification catalyst to form a slurry; the slurry is dewatered to form a catalyst-loaded wet cake which is the mixture; and the mixture is thermally treated to form the particulate composition. 3. The process according to claim 1, wherein the first carbonaceous feedstock and second carbonaceous feedstock are contacted separately with an aqueous solution comprising the gasification catalyst to form a first and a second slurry, the first and second slurries are dewatered separately to form a first and a second catalyst-loaded wet cake; the first and second catalyst-loaded wet cakes are combined to form the mixture; and the mixture is thermally treated to form the particulate composition. 4. The process according to claim 1, wherein the first carbonaceous feedstock and second carbonaceous feedstock are contacted separately with an aqueous solution comprising the gasification catalyst to form a first and a second slurry, the first and second slurries are dewatered separately to form a first and a second catalyst-loaded wet cake; the first and second catalyst-loaded wet cakes are thermally treated to form first and second dry particulates; and the first and second dry particulates are combined to form the mixture which is the particulate composition. 5. The process according to claim 1, wherein the first carbonaceous feedstock is contacted with an aqueous solution comprising the gasification catalyst to form a slurry; the slurry is dewatered to form a catalyst-loaded wet cake; and the catalyst-loaded wet cake is mixed with the second carbonaceous feedstock to form the mixture. 6. The process according to claim 1, wherein the second carbonaceous feedstock is contacted with an aqueous solution comprising the gasification catalyst to form a slurry; the slurry is dewatered to form a catalyst-loaded wet cake; and the catalyst-loaded wet cake is mixed with the first carbonaceous feedstock to form the mixture. 7. The process according to claim 1, wherein the alkali metal comprises potassium, sodium or both. 8. The process according to claim 7, wherein the alkali metal is potassium. 9. The process according to claim 1, wherein the particulate composition has a particle size ranging from about 25 microns to about 2500 microns.
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