Gas refining system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 24, 2005
Grant Date -
Jul 26, 2001
app pub date -
Feb 12, 2001
filing date -
Jun 23, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A gas refining method for adsorbing a reducing gas obtained by pressure gasification of coal or oil comprises introducing a reducing gas stream into an adsorbing and removing zone where it contacts an adsorbent. Sulfur-containing compounds are adsorbed onto the adsorbent and a first oxygen-containing gas stream is introduced into the adsorbing and removing zone in order to form a regeneration gas containing sulfur dioxide. The regeneration gas is contacted with a second oxygen-containing stream and a calcium-containing liquid slurry to effect absorption of sulfur dioxide by the slurry and precipitation of a gypsum compound. The temperature of the slurry is varied to cause selective precipitation of 60 -gypsum hemihydrate or gypsum dihydrate.
First Claim
Other Claims data not available
