US 11,986,795 B2
Organic-halogen-compound-absorbing agent, method for removing organic halogen compound from hydrocarbon gas in which said agent is used, device for absorbing halogen compound in which said method is used, and method for producing hydrocarbon gas
Tadahito Nakashima, Toyama (JP); Hyun-Joong Kim, Toyama (JP); and Kaoru Fujiwara, Tokyo (JP)
Assigned to CLARIANT CATALYSTS (JAPAN) K.K., Tokyo (JP); and ENEOS CORPORATION, Tokyo (JP)
Appl. No. 17/275,383
Filed by CLARIANT CATALYSTS (JAPAN) K.K., Tokyo (JP); and ENEOS Corporation, Tokyo (JP)
PCT Filed Jul. 11, 2019, PCT No. PCT/JP2019/027521
§ 371(c)(1), (2) Date Mar. 11, 2021,
PCT Pub. No. WO2020/059264, PCT Pub. Date Mar. 26, 2020.
Claims priority of application No. 2018-173289 (JP), filed on Sep. 18, 2018.
Prior Publication US 2022/0055011 A1, Feb. 24, 2022
Int. Cl. B01D 53/04 (2006.01); B01D 53/14 (2006.01); B01J 20/04 (2006.01); B01J 20/06 (2006.01); B01J 20/12 (2006.01)
CPC B01J 20/12 (2013.01) [B01D 53/04 (2013.01); B01D 53/1406 (2013.01); B01J 20/041 (2013.01); B01J 20/06 (2013.01); B01D 2252/10 (2013.01); B01D 2257/2045 (2013.01); B01D 2257/2064 (2013.01); C10G 2300/201 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of removing an organohalogen compound and an inorganic halogen compound from a hydrocarbon gas, wherein the method comprises
a) contacting the hydrocarbon gas with an inorganic halogen compound absorber, and
b) contacting the hydrocarbon gas obtained after step a) with an organohalogen compound absorbent in a downstream of step a),
wherein the organohalogen compound absorbent comprises attapulgite of at least 80% by weight, based on the total weight of the organohalogen compound absorbent.
 
7. A halogen compound absorbing apparatus comprising an inorganic halogen absorbing region equipped with an inorganic halogen compound absorber and an organohalogen compound absorbing region arranged in series at a subsequent stage of the inorganic halogen compound absorbing region and equipped with an organohalogen compound absorbent, wherein the organohalogen compound absorbent comprises attapulgite of at least 80% by weight, based on the total weight of the organohalogen compound absorbent.