CONFIGURATIONS AND METHODS OF SNG PRODUCTION

摘要

SNG plants according to the inventive subject matter include one or more methanation reactors that produce a primary methanation product that is cooled to a temperature sufficient to condense water, which is removed in a separator. So produced dried methanation product is then split to provide a reflux stream to the methanation reactors and a feed stream to an adiabatic trim reactor. Most preferably, the plant comprises at least two methanation reactors that are operated in series, wherein the first reactor receives the recycle stream and wherein the second reactor receives a portion of the first methanation reactor effluent and a portion of the first methanation reactor feed.