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제목 CO2 recovery device and method for cleaning filtration membrane device of CO2 recovery device
작성자 KCRC 등록일 2018-07-09 조회수 30

CO2 recovery device and method for cleaning filtration membrane device of CO2 recovery device

문헌번호

US 10010828 B2 (2018.07.03)

출원번호

14/893342 (2015.02.02)

출원인

MITSUBISHI HEAVY INDUSTRIES, LTD.

발명자

Takuya Hirata | Hiromitsu Nagayasu | Hiroshi Tanaka | Tomoki Noborisato | Tsuyoshi Oishi

Current IPC(Main)

B01D-053/14

 

 

우선권번호

JP 2014-020789 (2014.02.05)

 

 

요약

A filtration membrane device which uses a filter to collect solid contents remaining in a branched lean solution cleans the filter by using a low-concentration CO2 absorption liquid circulating within the system as cleaning water (containing the absorption liquid); rough cleaning, which returns the low-concentration CO2 absorption liquid used for cleaning to a lean solution supply line, is performed; the filter is finish-cleaned by cleaning water from outside the system which does not include the CO2 absorption liquid; the CO2 absorption liquid which is adhered to the solid contents is washed and removed; finish-cleaning water which includes the CO2 absorption liquid is returned to the lean solution supply line the moisture content within the system is maintained at a prescribed value by adjusting the water balance in an absorption tower and the concentration of the CO2 absorption liquid which circulates within the system is kept at a prescribed concentration.

대표청구항

1. A CO2 recovery system comprising: an absorption tower which brings an exhaust gas containing CO2 into contact with a CO2 absorption liquid to remove CO2;an absorption liquid regeneration tower which regenerates a rich solution, which has absorbed CO2, through heat exchange;a rich solution supply line through which the rich solution is extracted from the absorption tower and is introduced into the absorption liquid regeneration tower;a lean solution supply line through which a lean solution from which CO2 regenerated in the absorption liquid regeneration tower has been emitted is extracted from the absorption liquid regeneration tower, and is introduced into the absorption tower, and the lean solution is reused as the CO2 absorption liquid in the absorption tower; anda filtration membrane device which is interposed in a lean-solution branch line branched from the lean solution supply line, a rich solution branch line branched from the rich solution supply line, or both the solution branch lines, and collects solid contents remaining in a branched solution using a filter, and returns filtrate, which has passed through the filter, to the lean solution supply line, the rich solution supply line or both the solution supply lines;wherein the filtration membrane device in which the filter has been used to collect the solid contents is configured to rough-clean the filter by using cleaning water containing CO2 absorption liquid circulating within a system; return rough-cleaning water to the lean solution supply line, the rich solution supply line or both the solution supply lines; finish-clean the filter by using cleaning water which does not include the CO2 absorption liquid and which is from outside the system to wash out and remove the CO2 absorption liquid which is adhered to the collected solid contents; return finish-cleaning water which includes the CO2 absorption liquid to the lean solution supply line, the rich solution supply line or both the solution supply lines; maintain a moisture content in the system at a prescribed value by adjusting a water balance in the absorption tower; and keep a concentration of the CO2 absorption liquid which circulates within the system at a prescribed concentration.

WIPS 패밀리

EP2990095B1 | JP6216259B2 | US10010828B2 | WOWO2015-119083A1

 

 

이전글/다음글
첨부파일 us00010010828b2p.pdf
이전글 Capturing method of carbon dioxide using hydrazine derivative
다음글 Device for capturing carbon dioxide using two different dry sorbents