Patent ID: 8673135
Filing Date: 2014-03-18
Classification: B01D,C01B,C10G,C10J,C10K,Y02C,Y02E,Y02P

Abstract:
1. A process for reducing the carbon dioxide emissions in a facility treating carbonaceous material by liquefaction comprising: a) feeding a first feed of carbonaceous material and hydrogen under liquefaction conditions to one or more liquefaction reactors to create a light ends stream, a distillate stream, and a heavy ends; and separating from said light ends stream a LPG stream, a naphtha stream and a fuel gas; b) gasifying said heavy ends and a second feed of carbonaceous material in a gasification complex comprising a gasifier reactor, a sour gas removal unit, a water gas shift unit, a carbon dioxide absorption unit, and a hydrogen purification unit, and recovering a purified hydrogen stream comprising greater than 99 volume percent hydrogen, a tail gas purge stream and a carbon dioxide rich stream; c) feeding said tail gas purge stream, said fuel gas recovered from the light ends stream in step a), and a recycled purge gas stream from step f) to a reactor section of a steam methane reformer unit comprising said reactor section and a furnace section, to create a synthetic gas stream; d) shifting said synthetic gas stream catalytically using a water gas shift unit to create a shifted synthetic gas stream; e) capturing the carbon dioxide from said shifted synthetic gas stream through a carbon dioxide absorption process; f) purifying the hydrogen remaining in said shifted synthetic gas stream after step e) in a hydrogen purification unit to create at least a hydrogen fuel stream comprising greater than 99 mole percent hydrogen and a purge gas stream which is recycled to step c); g) sending a portion of said hydrogen fuel stream from step f) and a portion of the said recycled purge gas stream from the step f) to said furnace section of said steam methane reformer unit; h) feeding a portion of said hydrogen fuel stream from step f) to process fired heaters; i) purifying and compressing said carbon dioxide rich stream from step b) and optionally carbon dioxide recovered from step e) above for sequestering or use in enhanced oil recovery.