Patent ID: 9255226
Filing Date: 2016-02-09
CPC Classification: B01D,C01B,C10G,C10K,Y02C,Y02P

Claim Text:
1. A method of producing liquid hydrocarbons through Fischer-Tropsch synthesis, the method comprising: 1) subjecting a first syngas output from a biomass gasifier to a water-gas shift reaction and transforming part of CO in the first syngas to CO 2) introducing the first exhaust gas to a first pressure-swing adsorber to recover hydrogen gas from the first exhaust gas, obtaining hydrogen gas having a purity of 80-99 vol. % and a second exhaust gas, and dividing the hydrogen gas into three feeds; 3) introducing the second exhaust gas to a second pressure-swing adsorber to recover methane from the second exhaust gas, and obtaining methane having a purity of 80-95 vol. % and a third exhaust gas; 4) introducing methane to a methane reforming device, reforming methane in the methane reforming device to yield a third syngas; 5) returning the third syngas in step 4) and a first feed of the three feeds obtained in step 2) to step 1) to mix with the first syngas and to adjust a hydrogen/carbon ratio of the first syngas, and obtaining a fourth syngas; and 6) returning a second feed of the three feeds obtained in step 2) to step 1) to reduce the Fe-based or Co-based catalyst.