Sumitomo Seika Chemicals Co., Ltd.

Hiroaki Nago

Hiroyuki Hata

Junichi Kawakami

Shinichi Tai

Shigeru Morimoto

A method for purifying a paraffin from a source material containing a paraffin having 2 to 6 carbon atoms and an olefin having 2 to 6 carbon atoms includes a first step of bringing the source material into contact with a silver ion-containing solution (absorption liquid) at a predetermined temperature and pressure in an absorption columnand recovering a non-absorbed gas not absorbed by the absorption liquid while the olefin in the source material is preferentially absorbed by the absorption liquid, and a second step of desorbing and discharging a gas component from the absorption liquid having undergone the first step at a predetermined temperature and pressure in a desorption column. The first step and the second step are performed continuously in parallel while the absorption liquid is circulated between the first step and the second step.

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Hyogo, Japan

Hiroaki Nago