US 12,441,672 B2
Composite adsorbent for separation of ethylbenzene by adsorption distillation and application thereof
Siyuan Qie, Beijing (CN); Wencheng Tang, Beijing (CN); Ming Zhao, Beijing (CN); Longsheng Tian, Beijing (CN); Siliang Gao, Beijing (CN); and Weiwei Pang, Beijing (CN)
Assigned to CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing (CN); and RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPEC, Beijing (CN)
Appl. No. 18/042,312
Filed by CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing (CN); and RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPEC, Beijing (CN)
PCT Filed Aug. 24, 2021, PCT No. PCT/CN2021/114167
§ 371(c)(1), (2) Date Feb. 21, 2023,
PCT Pub. No. WO2022/042508, PCT Pub. Date Mar. 3, 2022.
Claims priority of application No. 202010870602.8 (CN), filed on Aug. 26, 2020.
Prior Publication US 2023/0322648 A1, Oct. 12, 2023
Int. Cl. C07C 7/13 (2006.01); B01D 3/32 (2006.01); B01D 3/34 (2006.01); B01J 20/18 (2006.01); B01J 20/22 (2006.01); B01J 20/28 (2006.01)
CPC C07C 7/13 (2013.01) [B01D 3/32 (2013.01); B01D 3/34 (2013.01); B01J 20/186 (2013.01); B01J 20/22 (2013.01); B01J 20/28004 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A composite adsorbent for separating ethylbenzene from C8 arene by adsorption distillation, comprising 1-50 mass % of a xylene adsorbent and 50-99 mass % of a carrier liquid,
wherein the carrier liquid is selected from alkane, aryl-substituted alkane, decalin, alkyl-substituted decalin, and a combination of two thereof, wherein the alkane is C10-C26 alkane, and the aryl-substituted alkane is C13-C16 aryl-substituted alkane,
wherein the xylene adsorbent, prior to being mixed with the carrier liquid, is a Y molecular sieve powder having supported thereon ions of Group IA metals, Group IIA metals, or both,
wherein the Y molecular sieve powder has a grain size of 0.1 to 2 microns, and
wherein the xylene adsorbent flows with the carrier liquid during operation.