US 12,240,758 B2
Systems and methods for production and separation of hydrogen and carbon dioxide
Mohammad Rafati, Durham, NC (US); and Rodney John Allam, Chippenham (GB)
Assigned to 8 Rivers Capital, LLC, Durham, NC (US)
Filed by 8 Rivers Capital, LLC, Durham, NC (US)
Filed on Jul. 2, 2024, as Appl. No. 18/762,336.
Application 17/365,611 is a division of application No. 16/185,188, filed on Nov. 9, 2018, granted, now 11,066,298, issued on Jul. 20, 2021.
Application 18/762,336 is a continuation of application No. 17/365,611, filed on Jul. 1, 2021, granted, now 12,054,388.
Claims priority of provisional application 62/670,175, filed on May 11, 2018.
Claims priority of provisional application 62/583,816, filed on Nov. 9, 2017.
Prior Publication US 2024/0351874 A1, Oct. 24, 2024
Int. Cl. C01B 3/38 (2006.01); B01D 3/14 (2006.01); B01D 53/00 (2006.01); B01D 53/047 (2006.01); B01D 53/26 (2006.01); B01J 7/00 (2006.01); B01J 19/00 (2006.01); B01J 19/24 (2006.01); C01B 3/00 (2006.01); C01B 3/36 (2006.01); C01B 3/50 (2006.01); C01B 3/56 (2006.01); C01B 32/50 (2017.01); F25J 3/02 (2006.01)
CPC C01B 3/382 (2013.01) [B01D 3/14 (2013.01); B01D 53/002 (2013.01); B01D 53/047 (2013.01); B01D 53/261 (2013.01); B01J 7/00 (2013.01); B01J 19/0013 (2013.01); B01J 19/245 (2013.01); C01B 3/00 (2013.01); C01B 3/36 (2013.01); C01B 3/506 (2013.01); C01B 3/56 (2013.01); C01B 32/50 (2017.08); F25J 3/0223 (2013.01); F25J 3/0252 (2013.01); F25J 3/0266 (2013.01); F25J 3/0295 (2013.01); B01D 2253/108 (2013.01); B01D 2253/116 (2013.01); B01D 2256/16 (2013.01); B01D 2256/22 (2013.01); B01D 2257/504 (2013.01); B01D 2259/65 (2013.01); B01J 2219/00103 (2013.01); B01J 2219/00108 (2013.01); C01B 2203/042 (2013.01); C01B 2203/046 (2013.01); C01B 2203/0475 (2013.01); C01B 2203/066 (2013.01); C01B 2203/0883 (2013.01); C01B 2203/1241 (2013.01); C01B 2203/84 (2013.01); F25J 2200/02 (2013.01); F25J 2200/40 (2013.01); F25J 2200/70 (2013.01); F25J 2205/40 (2013.01); F25J 2205/50 (2013.01); F25J 2205/60 (2013.01); F25J 2205/64 (2013.01); F25J 2220/02 (2013.01); F25J 2230/32 (2013.01); F25J 2230/80 (2013.01); F25J 2235/80 (2013.01); F25J 2270/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A process for hydrogen production, the process comprising:
reacting a hydrocarbon feed stream and oxygen into a reactor unit to form a product gas stream comprising H2+CO;
passing the product gas stream comprising H2+CO through a steam generating boiler to add steam to the product gas stream comprising H2+CO;
converting the product gas stream comprising H2+CO in at least one reactor to form a stream comprising H2+CO2;
heating the hydrocarbon feed stream against one or both of the product gas stream comprising H2+CO and the stream comprising H2+CO2 in one or more heat exchangers;
heating a hydrocarbon fuel stream against a gas turbine exhaust stream in the one or more heat exchangers and outputting the heated hydrocarbon fuel stream to a gas turbine to produce power;
processing the cooled stream comprising H2+CO2 in a first pressure swing adsorber to provide a first product stream formed of substantially pure hydrogen and also provide waste gas steam comprising CO2;
compressing the waste gas stream comprising CO2 in a compressor;
passing a vapor phase stream depleted in CO2 plus additional steam through a catalytic CO shift reactor to provide a cooled compressed waste gas stream; and
processing the cooled compressed waste gas stream in a second pressure swing adsorber to provide a second product stream formed of substantially pure hydrogen and a second low pressure waste gas stream,
wherein an overall ratio of H2 product divided by H2+CO present in the product gas stream is greater than about 97%.