FIELD: chemistry.
SUBSTANCE: method and device are claimed for obtaining of liquefied natural gas from supplied natural gas, which contains hydrocarbons C5-C7 and hydrocarbons C8 or higher. And claimed method includes stages: contacting of first adsorbent, which is preferably adsorbs hydrocarbons C8 or higher, with supplying natural gas, for obtaining of depleted C8 stream of natural gas; contacting of second adsorbent, which is differ from first adsorbent and preferably adsorbs hydrocarbons C5-C7, with depleted C8 stream of natural gas, for obtaining of depleted C5-C8 stream of natural gas, and second adsorbent has higher selectivity and capacity of adsorption of hydrocarbons C5-C7, than first adsorbent; and reduction of depleted C5-C8 stream of natural gas in liquation degree.
EFFECT: application of claimed invention makes it possible to avoid excessive regeneration of adsorbents.
10 cl, 2 tbl, 5 dwg
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