METHOD AND SYSTEM FOR PRODUCING A GAS PRODUCT CONTAINING CARBON MONOXIDE
First Claim
1. Method (100-500) for producing a gas product (D) containing at least carbon monoxide, in which method at least carbon dioxide is subjected to an electrolysis process (10) in order to obtain a raw gas (A) containing at least carbon monoxide and carbon dioxide, and the carbon dioxide contained in the raw gas (A) is partially or completely fed back to the electrolysis process (10), characterized in that the raw gas (A) is partially or completely subjected to a membrane separation process (20) to obtain a retentate mixture (B) and a permeate mixture (C), which is enriched in carbon dioxide in comparison with the raw gas (A), and that the retentate mixture (B) is partially or completely subjected to an adsorption process (40) to obtain the gas product (D), which is enriched in carbon monoxide and depleted of carbon dioxide in comparison with the retentate mixture (B), and a residual mixture (E), which is depleted of carbon monoxide and enriched in carbon dioxide in comparison with the retentate mixture (B).
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Abstract
The invention relates to a method (100-500) for producing a gas product containing at least carbon monoxide, in which method at least carbon dioxide is subjected to an electrolysis process (10) in order to obtain a raw gas (A) containing at least carbon monoxide and carbon dioxide and the carbon dioxide contained in the raw gas (A) is partially or completely fed back to the electrolysis process (10). According to the invention, the raw gas (A) is partially or completely subjected to a membrane separation process (20) in order to obtain a retentate mixture (B) and a permeate mixture (C), which is enriched in carbon dioxide in comparison with the raw gas (A), and that the retentate mixture (B) is partially or completely subjected to a pressure swing adsorption process (40) in order to obtain the gas product (D), which is enriched in carbon monoxide and depleted of carbon dioxide in comparison with the retentate mixture (B), and a residual mixture (E), which is depleted of carbon monoxide and enriched in carbon dioxide in comparison with the retentate mixture (B). The invention further relates to a corresponding system.
3 Citations
15 Claims
- 1. Method (100-500) for producing a gas product (D) containing at least carbon monoxide, in which method at least carbon dioxide is subjected to an electrolysis process (10) in order to obtain a raw gas (A) containing at least carbon monoxide and carbon dioxide, and the carbon dioxide contained in the raw gas (A) is partially or completely fed back to the electrolysis process (10), characterized in that the raw gas (A) is partially or completely subjected to a membrane separation process (20) to obtain a retentate mixture (B) and a permeate mixture (C), which is enriched in carbon dioxide in comparison with the raw gas (A), and that the retentate mixture (B) is partially or completely subjected to an adsorption process (40) to obtain the gas product (D), which is enriched in carbon monoxide and depleted of carbon dioxide in comparison with the retentate mixture (B), and a residual mixture (E), which is depleted of carbon monoxide and enriched in carbon dioxide in comparison with the retentate mixture (B).
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15. System for producing a gas product (D) containing at least carbon monoxide, comprising an electrolysis unit configured to subject at least one carbon dioxide to an electrolysis process (10) to obtain a raw gas (A) containing at least carbon monoxide and carbon dioxide, and comprising means configured to partially or completely feed back the carbon dioxide contained in the raw gas (A) to the electrolysis process (10), characterized by means configured to partially or completely subject the raw gas (A) to a membrane separation process (20) to obtain a retentate mixture (B) and a permeate mixture (D), which is enriched in carbon dioxide in comparison with the raw gas (A), and means configured to partially or completely subject the retentate mixture (B) to a pressure swing adsorption process (40) to obtain the gas product (D), which is enriched in carbon monoxide and depleted of carbon dioxide in comparison with the retentate mixture (B), and a residual mixture (E), which is depleted of carbon monoxide and enriched in carbon dioxide in comparison with the retentate mixture (B).
Specification