PURPOSE: To obtain high desulfurization efficiency with slight consumption of power by bringing a gas contg. H2S into contact with γ-alumina under pressure to adsorb H2S, and desorbing the adsorbed H2S under reduced pressure to regenerate the γ-alumina.
CONSTITUTION: A gas contg. H2S is brought into contact with the γ-alumina 6 packed in adsorption towers 7a-7c under pressure to adsorb the H2S and the adsorbed H2S is desorbed under reduced pressure to regenerate the γ-alumina. The γ-alumina 6, on which S is gradually deposited in the pressure swinging- type H2S removal process over a long period, is heated to a high temp. to release the S and then cooled, and the pressure swinging-type H2S removal is again performed over a long period. As a result, the adsorbent is hardly replaced, and high desulfurization efficiency is attained with slight consumption of power.
MORIMOTO TAKASHI
TSUTAYA HIROYUKI
ARAKI KOICHI
OSHIMA KAZUAKI
