公开(公告)号：US20060074132A1

公开(公告)日：2006-04-06

申请号：US10524325

申请日：2003-08-06

Applicant: Rodney Allam ,  Andrew Weaver ,  Vincent White ,  David Byard

Inventor： Rodney Allam ,  Andrew Weaver ,  Vincent White ,  David Byard

IPC: C07C27/06

CPC classification number: C10G2/32 ,  F25J3/0223 ,  F25J3/0238 ,  F25J3/0252 ,  F25J3/0261 ,  F25J3/0285 ,  F25J3/029 ,  F25J2200/72 ,  F25J2200/76 ,  F25J2200/78 ,  F25J2200/94 ,  F25J2205/04 ,  F25J2205/30 ,  F25J2205/40 ,  F25J2205/80 ,  F25J2210/02 ,  F25J2210/42 ,  F25J2235/60 ,  F25J2245/02 ,  F25J2270/02 ,  F25J2270/04 ,  F25J2270/24 ,  F25J2270/904

Abstract: Higher molecular weight hydrocarbon compounds or oxygenates are produced from a gas comprising methane in a process comprising the steps of generating synthesis gas (“syngas”) comprising carbon monoxide and hydrogen by reaction of a gas comprising methane with steam and/or an oxidant gas comprising oxygen, producing higher molecular weight hydrocarbon compounds or oxygenates in a syngas conversion process, removing offgas comprising unreacted hydrogen and unreacted carbon monoxide from said syngas conversion process and separating cryogenically unreacted hydrogen from said offgas or from a gas derived therefrom to produce separated hydrogen product that is is substantially free of unreacted carbon monoxide and a first cryogenic liquid comprising unreacted carbon monoxide. The unreacted hydrogen is preferably separated from the offgas in a liquid methane wash column. Two advantages of this process are that this cryogenic separation process is more efficient than known pressure swing absorption techniques and that the concentration of carbon monoxide in the separated hydrogen product is sufficiently small that the separated hydrogen product may be used in the hydrogenation of a wax fraction of the higher molecular weight hydrocarbon compounds without further purification or processing.

Abstract translation: 在包括甲烷的气体的过程中，由包含甲烷的气体产生高分子量烃化合物或含氧化合物，所述方法包括以下步骤：通过包含甲烷的气体与蒸汽和/或氧化剂气体的反应产生包含一氧化碳和氢的合成气（“合成气”）， 氧气，在合成气转化过程中产生较高分子量的烃化合物或含氧化合物，从所述合成气转化过程中除去包含未反应的氢气和未反应的一氧化碳的废气，并从所述废气中或从其产生的气体中分离低温未反应的氢气以产生分离的氢产物， 基本上不含未反应的一氧化碳和包含未反应的一氧化碳的第一低温液体。 未反应的氢优选在液体甲烷洗涤塔中与废气分离。 该方法的两个优点是，该低温分离方法比已知的压力挥发吸收技术更有效，并且分离的氢产物中一氧化碳的浓度足够小，使得分离的氢产物可用于蜡馏分的氢化 的较高分子量烃化合物，无需进一步纯化或加工。