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제목 PROCESS FOR CAPTURING CO2 FROM A GAS STREAM
작성자 KCRC 등록일 2018-10-08 조회수 23

 

PROCESS FOR CAPTURING CO2 FROM A GAS STREAM

문헌번호

US 2018-0272266 A1 (2018.09.27)

출원번호

15/525136 (2015.11.03)

출원인

SHELL OIL COMPANY

발명자

Gerald SPRACHMANN | Gerardus Antonius Franciscus VAN MOSSEL | Hendrik DATHE | Tobias PROELL | Gerhard SCHOENY

Current IPC

(Main)

B01D-053/12

 

 

우선권번호

EP 2014-192575 (2014.11.10)

 

 

요약

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.

대표청구항

1. A process for capturing carbon dioxide from a gas stream, the process comprising the steps of: (a) contacting the gas stream with solid adsorbent particles in an adsorption zone, wherein the adsorption zone has at least two beds of fluidized solid adsorbent particles, andwherein the solid adsorbent particles are flowing downwards from bed to bed, andwherein the gas stream is flowing upwards, andwherein the adsorption zone has at least one internal cooling means in each of the beds of fluidized solid absorbent particles, andwherein the solid adsorbent particles comprise 15 to 75 weight % of organic amine compounds, based on the total weight of the adsorbent particles, andwherein the gas stream entering the adsorption zone, at the pressure at which it enters the adsorption zone, has a dew point which is at least 5° C., below the forward flow temperature of the cooling medium in the internal cooling means having the lowest forward flow temperature in the adsorption zone;(b) passing carbon dioxide enriched solid adsorbent particles obtained in step (a) to a riser zone (I) with a riser gas (I);(c) heating at least a part of the carbon dioxide enriched solid adsorbent particles in the riser zone (I), optionally by means of direct or indirect heat exchange with carbon dioxide depleted solid adsorbent particles in the riser zone (II) of step (f);(d) separating the heated carbon dioxide enriched solid adsorbent particles from the riser gas (I) at the end of the riser zone (I) in a separating device;(e) regenerating at least a part of the carbon dioxide enriched solid absorbent particles obtained in step (d) in a desorption zone,wherein the desorption zone has at least two beds of fluidized solid adsorbent particles, andwherein the solid adsorbent particles are flowing downwards from bed to bed and a stripping gas is flowing upwards, andwherein the stripping gas comprises at least 50 volume % steam; wherein the desorption zone has at least one internal heating means in each of the beds of fluidized solid absorbent particles;(f) passing carbon dioxide depleted solid adsorbent particles obtained in step (e) to a riser zone (II) with a riser gas (II);(g) cooling at least a part of the carbon dioxide depleted solid absorbent particles in riser zone (II), optionally by means of direct or indirect heat exchange with carbon dioxide enriched solid adsorbent particles in the riser zone (I) of step (b);(h) separating the carbon dioxide depleted solid adsorbent particles from the riser gas (II) at the end of the riser zone (II) in a separating device; and(i) recycling at least 50% of the carbon dioxide depleted solid adsorbent particles obtained in step (h) to the adsorption zone.

WIPS 패밀리

AU2015345356A1 | BR112017009639A2 | CA2966244A1 | CN107073385A | EP2014-192575 | EP3218089A1 | US2018-0272266A1 | WOWO2016-074980A1

 

이전글/다음글
첨부파일 us20180272266a1p.pdf
이전글 METHOD FOR SEPARATING CARBON DIOXIDE
다음글 Carbon dioxide capture using phase change ionic liquids