公开(公告)号：US20180272266A1

公开(公告)日：2018-09-27

申请号：US15525136

申请日：2015-11-03

Applicant: SHELL OIL COMPANY

Inventor： Gerald SPRACHMANN ,  Gerardus Antonius Franciscus VAN MOSSEL ,  Hendrik DATHE ,  Tobias PROELL ,  Gerhard SCHOENY

IPC: B01D53/12 ,  B01J20/22 ,  B01J20/28 ,  B01J20/34

CPC classification number: B01D53/12 ,  B01D53/08 ,  B01D53/62 ,  B01D53/83 ,  B01D2252/204 ,  B01D2253/202 ,  B01D2257/504 ,  B01D2258/0283 ,  B01D2259/40086 ,  B01D2259/40096 ,  B01D2259/402 ,  B01D2259/65 ,  B01J8/189 ,  B01J8/26 ,  B01J20/22 ,  B01J20/28004 ,  B01J20/28011 ,  B01J20/28061 ,  B01J20/28064 ,  B01J20/28073 ,  B01J20/28076 ,  B01J20/3425 ,  B01J20/3466 ,  B01J20/3483 ,  Y02A50/2342 ,  Y02C10/04 ,  Y02C10/08

Abstract: The present invention relates to a process for capturing carbon dioxide from a gas stream. The gas stream is contacted with solid adsorbent particles in an adsorption zone. The adsorption zone has at least two beds of fluidized solid adsorbent particles, and the solid adsorbent particles are flowing downwards from bed to bed. The solid adsorbent particles comprise 15 to 75 weight % of organic amine compounds. The gas stream entering the adsorption zone has a dew point which is at least 5° C. below the forward flow temperature of the coolest cooling medium in the adsorption zone. Carbon dioxide enriched solid adsorbent particles are heated, and then regenerated. The desorption zone has at least two beds of fluidized solid adsorbent particles, and the stripping gas is steam. The regenerated particles are cooled and recycled to the adsorption zone.