Patent ID: 7988765
Filing Date: 2011-08-02
Classification: C01B,C10G,C10J,C10K

Abstract:
1. A method for processing a feed stream from a synthesis gas production process, comprising: separating in a first Pressure Swing Absorption (PSA) system a feed stream into a first fraction including substantially adsorbed components and a second fraction including substantially un-absorbed components, the first fraction including a majority of CH passing a first portion of the second fraction to a second PSA system; separating in the second PSA system the first portion of the second fraction into a third fraction including substantially adsorbed components and a fourth fraction including substantially un-absorbed components, the third fraction including a majority of N passing at least one of a second portion of the second fraction or the fourth fraction to form a stream recycled to a synthesis-gas conversion process including a majority of the H combining a portion of the first fraction and the third fraction to stream independent of recycling the combination to feed streams to the synthesis-gas production process or the synthesis-gas conversion process; and passing a second portion of the first fraction as feed gas to the synthesis-gas production process.