Process for the production of naphtha gas from landfill gas

Gas separation: processes – Compressing and indirect cooling of gaseous fluid mixture to... – And solid sorption

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95 42, 95 51, 95 96, 95117, 95136, 95139, 95143, 96 4, 96108, 96136, 96142, 96243, B01D 53047, B01D 5314, B01D 5322

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060713267

ABSTRACT:
The production of naphtha gas from landfill gas is preferably accomplished through a gas purification step, a catalytic conversion of methane gas to hydrogen gas, and a blending step in which various process streams are blended to produce the naphtha gas stream. The landfill gas stream is first treated through a gas purification/separation procedure to produce a substantially pure methane stream. The purified methane stream is then split into at least two portions. The first portion is fed into a hydrogen reformer and a shift reactor, where the methane gas is converted into a hydrogen-bearing stream which includes hydrogen and carbon dioxide. The second portion of the stream is preferably fed into a mixer. In the mixer, the pure methane stream, the hydrogen-bearing stream and a portion of the purified landfill gas stream are preferably blended together to form a naphtha gas stream.

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