Patent ID: 8500863

Claim:
A method for performing a process of purifying a gaseous stream comprising methane, the method comprising: passing the gaseous stream including methane through a column that is packed with an adsorbent material, wherein after the gaseous stream passes through the column packed with the adsorbent material, only the methane is retained in the column, and helium push gas passes through the column, at a room temperature, the adsorbent material comprising a porous polymer for separating the methane and the helium push gas, independent of cryogenic cooling; maintaining the column at an adsorption temperature, wherein the adsorption temperature is a temperature at which an amount of methane is retained in the column, while impurities in said gaseous stream are released from said column; and subsequently heating the column to a desorption temperature, wherein the desorption temperature is a temperature at which the retained methane is released from the column.