Patent ID: 7967896
Filing Date: 2011-06-28
Classification: B01D,C10K,C10L,Y02C,Y02P

Abstract:
1. A process for treating a carbon dioxide and/or hydrogen sulfide containing gas comprising: a) sending a feed gas containing carbon dioxide and hydrogen sulfide through a carbon dioxide absorber unit or a hydrogen sulfide absorber unit or through a carbon dioxide absorber unit and a hydrogen sulfide absorber unit, wherein said carbon dioxide absorber unit and said hydrogen sulfide absorber unit contain a lean solvent to produce a loaded solvent containing a majority of said carbon dioxide and/or hydrogen sulfide from said feed gas and a treated gas; b) regenerating said loaded solvent in a carbon dioxide and or hydrogen sulfide removal system; c) recovering energy from at least one solvent stream to boost pressure of at least one other solvent stream wherein at least one hydraulic turbocharger is used to recover said energy from a solvent stream that exits said carbon dioxide and/or hydrogen sulfide absorber unit and transfers said energy to pump a semi-lean solvent stream from said carbon dioxide removal system; and d) a second hydraulic turbocharger to recover energy from a hydrogen sulfide concentrator solvent stream to use in pumping a lean solvent stream.