US 12,258,526 B2
Manufacturing method and manufacturing apparatus of syngas, and manufacturing method of liquid hydrocarbon using the same
Hee Jung Jeon, Daejeon (KR); Ok Youn Kim, Daejeon (KR); and Dong Min Yun, Daejeon (KR)
Assigned to SK Innovation Co., Ltd., Seoul (KR)
Filed by SK Innovation Co., Ltd., Seoul (KR)
Filed on Jan. 17, 2024, as Appl. No. 18/414,904.
Claims priority of application No. 10-2023-0031022 (KR), filed on Mar. 9, 2023.
Prior Publication US 2024/0301307 A1, Sep. 12, 2024
Int. Cl. C10K 1/00 (2006.01); C10J 3/48 (2006.01); C10J 3/84 (2006.01); C10K 3/00 (2006.01); C10K 3/02 (2006.01); C10K 3/04 (2006.01); C10K 3/06 (2006.01)
CPC C10K 1/005 (2013.01) [C10J 3/482 (2013.01); C10J 3/84 (2013.01); C10K 3/003 (2013.01); C10K 3/026 (2013.01); C10K 3/04 (2013.01); C10K 3/06 (2013.01); C10J 2300/0946 (2013.01); C10J 2300/0976 (2013.01); C10J 2300/0986 (2013.01); C10J 2300/1618 (2013.01); C10J 2300/1696 (2013.01); C10J 2300/1807 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for reducing greenhouse gas emission in the manufacture of syngas, the method comprising the steps of:
(S1) heat-treating organic waste in a first reactor to produce a first mixed gas, which comprises methane, hydrogen, carbon monoxide, and carbon dioxide;
(S2) introducing the first mixed gas to a second reactor and subjecting it to methane reforming in the presence of a catalyst to produce a second mixed gas;
(S3) separating the catalyst and carbon dioxide from the second mixed gas and recovering a third mixed gas from which the catalyst and the carbon dioxide have been removed;
(S4) introducing the carbon dioxide separated in step (S3) to a third reactor and converting the carbon dioxide into carbon monoxide through a reverse Boudouard reaction; and
(S5) mixing the third mixed gas recovered in step (S3) and the carbon monoxide converted in step (S4) to produce syngas,
wherein (S4) further comprises the steps of:
(S4-1) introducing the catalyst separated in step (S3) to the third reactor and regenerating the catalyst through a reverse Boudouard reaction; and
(S4-2) recirculating and resupplying the regenerated catalyst to step (S2).