Title:
METHOD AND SYSTEM FOR RECYCLING CARBON DIOXIDE
Document Type and Number:
WIPO Patent Application WO/2019/091259
Kind Code:
A1
Abstract:
A method and a system for recycling carbon dioxide. The method for recycling carbon dioxide comprises: chlorinating a calcium-containing silicate and/or a magnesium-containing silicate to obtain calcium chloride and/or magnesium chloride; mixing the calcium chloride and/or magnesium chloride with ammonia water and carbon dioxide and conducting a carbonation reaction to recycle and convert the carbon dioxide into calcium carbonate and/or magnesium carbonate and produce an ammonium chloride solution; and recycling the ammonium chloride solution produced by the carbonation step, and generating hydrogen chloride after decomposition or directly using the ammonium chloride solution after concentration to chlorinate the calcium-containing silicate and/or magnesium-containing silicate. The process uses ammonium chloride as a catalyst for an overall carbon dioxide mineralization reaction and produces a final product of calcium carbonate and/or magnesium carbonate having high purity with low energy consumption. The process realizes circulative use of ammonium chloride, and reduces material consumption as compared with the prior art.
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Inventors:
WANG QI (CN)
Application Number:
PCT/CN2018/110352
Publication Date:
May 16, 2019
Filing Date:
October 16, 2018
Export Citation:
Assignee:
YUANCHU TECH BEIJING CO LTD (CN)
International Classes:
C01F11/46; B01D53/62; B01J19/00; C01B11/14; C01F11/18
Domestic Patent References:
| WO1999007466A1 | 1999-02-18 |
Foreign References:
| CN107720800A | 2018-02-23 | |||
| CN101823695A | 2010-09-08 | |||
| CN103030166A | 2013-04-10 | |||
| CN101823745A | 2010-09-08 | |||
| CN104284707A | 2015-01-14 | |||
| US20090220405A1 | 2009-09-03 |
Attorney, Agent or Firm:
TOWIN INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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