Inventors:
David Parro - Houston TX, US
Edgar Sanders - Houston TX, US
International Classification:
B01D003/00, F25J003/00
US Classification:
203100000, 062624000, 062929000
Abstract:
A method of separating COfrom a hydrocarbon gas inlet stream that is within predetermined pressure and temperature ranges, including the steps of subjecting the inlet stream to fractional distillation providing a CObottom product stream and a distillation overhead stream, passing the distillation overhead stream to the inlet of a primary reflux drum producing a primary reflux liquid stream and a hydrocarbon vapor stream, subjecting the hydrocarbon vapor stream to membrane separation to provide a hydrocarbon product stream and a permeate stream, compressing the permeate stream and recycling the compressed permeate stream to the inlet of the primary reflux drum thereby providing a COliquid product and a hydrocarbon gas product.