Title:
ABSORPTION SOLVENT WASTE LIQUID RECYCLING METHOD AND CO2 CAPTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2024/051091
Kind Code:
A1
Abstract:
The present application relates to an absorption solvent waste liquid recycling method and a CO2 capturing method. The recycling method comprises: providing a mixed slurry of an adsorbent and absorption solvent waste liquid; and enabling the mixed slurry to react at 60-150°C under ultrasonic and sealed conditions, the adsorbent being solid waste containing alkaline substances. According to the present application, the solid waste containing alkaline substances is used as an adsorbent to treat the absorption solvent waste liquid, so that harmful substances such as toxic and carcinogenic diethylene glycol formed by self-polymerization in the absorption solvent waste liquid can be adsorbed on the solid waste, and a removal rate can reach more than 88%. After this treatment, the obtained absorption solvent waste liquid can be recycled. In addition, by using solid waste as an adsorbent, the production cost is low, and the waste can also be subjected to solid waste utilization.
Inventors:
LIU RONG (CN)
Application Number:
PCT/CN2023/076675
Publication Date:
March 14, 2024
Filing Date:
February 17, 2023
Export Citation:
Assignee:
HUANENG CLEAN ENERGY RES INST (CN)
International Classes:
C02F1/28; B01J20/00; C02F101/30
Foreign References:
| CN115636459A | 2023-01-24 | |||
| CN108704445A | 2018-10-26 | |||
| CN108975739A | 2018-12-11 | |||
| KR20120074092A | 2012-07-05 | |||
| CN113713778A | 2021-11-30 | |||
| CN113786703A | 2021-12-14 |
Attorney, Agent or Firm:
SUNSHINE INTELLECTUAL PROPERTY INTERNATIONAL CO., LTD. (CN)
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