CN-224207987-U - Carbon dioxide conversion system

CN224207987UCN 224207987 UCN224207987 UCN 224207987UCN-224207987-U

Abstract

The application relates to a carbon dioxide conversion system which comprises a first mixing chamber, an electrochemical reactor, a first conversion unit and a second conversion unit, wherein a feeding end of the first mixing chamber is suitable for introducing a reactant to be reacted with water, a discharging end of the first mixing chamber is communicated with a feeding end of the electrochemical reactor, the electrochemical reactor is configured for carrying out a half-water decomposition reaction on the water to generate hydroxyl ions and hydrogen ions and respectively reacts with the reactant to be reacted to generate a first product and a second product based on the generated hydroxyl ions and hydrogen ions, the feeding end of the first conversion unit is communicated with the first discharging end of the electrochemical reactor and is configured for converting the first product generated by the electrochemical reactor, and a feeding end of the second conversion unit is communicated with the second discharging end of the electrochemical reactor and is configured for capturing and converting carbon dioxide into a third product by utilizing the second product generated by the electrochemical reactor.

Inventors

ZHOU BING
LIU ZHONGYI
SHA XIAOMING
ZHENG YANHUI
ZHU ZHONGYUAN

Assignees

北京氢太科技有限公司

Dates

Publication Date: 20260508
Application Date: 20250513

Claims (8)

1. A carbon dioxide conversion system is characterized by comprising a first mixing chamber, an electrochemical reactor, a first conversion unit and a second conversion unit; The discharge end of the first mixing chamber is communicated with the feed end of the electrochemical reactor, and the electrochemical reactor is configured to perform a half-water decomposition reaction on water to generate hydroxide ions and hydrogen ions, and react with the reactant to generate a first product and a second product respectively based on the generated hydroxide ions and hydrogen ions; the feed end of the first conversion unit is communicated with the first discharge end of the electrochemical reactor and is configured to convert a first product generated by the electrochemical reactor; the feed end of the second conversion unit is communicated with the second discharge end of the electrochemical reactor and is configured to capture and convert carbon dioxide into a third product by utilizing a second product generated by the electrochemical reactor.
2. The carbon dioxide conversion system according to claim 1, wherein the first conversion unit comprises a first transfer tank, a second mixing chamber, and a first settler assembly; The first feed end of the first transfer tank is in communication with the first discharge end of the electrochemical reactor, the first discharge end of the first transfer tank is in communication with the first feed end of the second mixing chamber, the second feed end of the second mixing chamber is adapted to introduce a first compound, and the second mixing chamber is configured to neutralize the first product with the first compound to produce a fourth product; The discharge end of the second mixing chamber is in communication with the feed end at the top of the first settler assembly, and the first settler assembly is configured to separate a fourth product produced by the second mixing chamber.
3. The carbon dioxide conversion system according to claim 2, further comprising a first recycle pump and a second recycle pump; The feed back end of the first transfer tank is communicated with the discharge port of the first settler assembly through the first recycle pump, the first recycle pump is configured to send the fourth product separated by the first settler assembly back into the first transfer tank, The second discharging end of the first transfer tank is communicated with the first material return end of the electrochemical reactor through the second circulating pump.
4. The carbon dioxide conversion system according to claim 1, wherein the second conversion unit comprises a second transfer tank, a flare assembly, and a second settler assembly; The first discharge end of the second transfer tank is communicated with the first feed end of the explosive gas tower assembly, the second feed end of the explosive gas tower assembly is suitable for introducing carbon dioxide, and the explosive gas tower assembly is configured to react the captured carbon dioxide with a second product to generate a third product; The first discharge end of the explosive gas tower assembly is communicated with the feed end of a second settler assembly, and the second settler assembly is configured to separate a third product generated by the explosive gas tower assembly.
5. The carbon dioxide conversion system according to claim 4, further comprising a second recycle pump and a third recycle pump; The discharge end of the second settler assembly is communicated with the return end of the second transfer tank through the second recycling pump, and the second recycling pump is configured to return the third product separated by the second settler assembly into the second transfer tank; And a second discharging end of the second transfer tank is communicated with a second feed back end of the electrochemical reactor through the third circulating pump.
6. The carbon dioxide conversion system according to claim 1, wherein the electrochemical reactor comprises an anode plate, a cathode plate, an anionic membrane, a cationic membrane, a first half-water splitting unit, and a second half-water splitting unit; The first half water-splitting unit and the second half water-splitting unit are arranged opposite to each other, and the anion membrane and the cation membrane are arranged between the two half water-splitting units; The anode plate is arranged on one side of the first half water-splitting unit, which is away from the anion membrane, and the cathode plate is arranged on one side of the second half water-splitting unit, which is away from the cation membrane.
7. The carbon dioxide conversion system according to claim 6, wherein the first half-water splitting unit and the second half-water splitting unit each comprise a cathode membrane, a catalytic anode and an insulating membrane; the cathode film is arranged opposite to the insulating diaphragm, the catalytic anode is arranged between the cathode film and the insulating diaphragm, and the cathode film is attached to one side of the catalytic anode, which is away from the insulating diaphragm; The catalytic anode is connected with the anode of the second power supply.
8. The carbon dioxide conversion system according to claim 7, wherein the first half-water splitting unit and the second half-water splitting unit each further comprise an anode membrane and a catalytic cathode; The anode film is arranged on one side of the insulating diaphragm, which is away from the cathode film, The catalytic cathode is arranged between the anode film and the insulating diaphragm, and the anode film is attached to one side of the catalytic cathode, which is away from the insulating diaphragm; the catalytic cathode is connected with the cathode of the second power supply.

Description

Carbon dioxide conversion system Technical Field The application relates to the technical field of carbon dioxide conversion, in particular to a carbon dioxide conversion system. Background Under the current large background of global climate change and energy transformation, the effective conversion and utilization of carbon dioxide are increasingly important, the traditional carbon dioxide conversion generally adopts technologies such as a chemical method, an adsorption method, a membrane method and the like, carbon dioxide in the flue gas of a coal-fired boiler is separated and captured, and the regeneration, purification and compression of the carbon dioxide are realized through modes such as pressure and temperature regulation, however, a large amount of byproducts are often generated in the conversion process by the existing technologies, and the subsequent separation and treatment difficulty is increased due to the complicated chemical composition and unstable properties of the byproducts. Disclosure of Invention In view of the above, the present application proposes a carbon dioxide conversion system comprising a first mixing chamber, an electrochemical reactor, a first conversion unit and a second conversion unit; The discharge end of the first mixing chamber is communicated with the feed end of the electrochemical reactor, and the electrochemical reactor is configured to perform a half-water decomposition reaction on water to generate hydroxyl ions and hydrogen ions, and react with the reactant to generate a first product and a second product respectively based on the generated hydroxyl ions and hydrogen ions; The feed end of the first conversion unit is communicated with the first discharge end of the electrochemical reactor and is configured to convert a first product generated by the electrochemical reactor; The feed end of the second conversion unit is communicated with the second discharge end of the electrochemical reactor and is configured to capture and convert the carbon dioxide into a third product by utilizing a second product generated by the electrochemical reactor. In one possible implementation, the first conversion unit includes a first transfer tank, a second mixing chamber, and a first settler assembly; The first feed end of the first transfer pot being in communication with the first discharge end of the electrochemical reactor, the first discharge end of the first transfer pot being in communication with the first feed end of the second mixing chamber, the second feed end of the second mixing chamber being adapted for introducing the first compound, the second mixing chamber being configured to neutralize the first product with the first compound to produce a fourth product; The discharge end of the second mixing chamber is in communication with the feed end at the top of the first settler assembly, which is configured to separate a fourth product produced in the second mixing chamber. In one possible implementation, the system further comprises a first recycle pump and a second recycle pump; The feed back end of the first transfer tank is communicated with the discharge port of the first settler assembly through a first recycle pump, the first recycle pump is configured to send the fourth product separated by the first settler assembly back into the first transfer tank, The second discharging end of the first transfer tank is communicated with the first feed back end of the electrochemical reactor through a second circulating pump. In one possible implementation, the second conversion unit includes a second transfer tank, a flare stack assembly, and a second settler assembly; The first discharge end of the second transfer tank is communicated with the first feed end of the explosive gas tower assembly, the second feed end of the explosive gas tower assembly is suitable for introducing carbon dioxide, and the explosive gas tower assembly is configured to react the captured carbon dioxide with the second product to generate a third product; The first discharge end of the explosive gas tower assembly is communicated with the feed end of the second settler assembly, and the second settler assembly is configured to separate a third product produced by the explosive gas tower assembly. In one possible implementation, the system further comprises a second recycle pump and a third recycle pump; the discharge end of the second settler assembly is communicated with the return end of the second transfer tank through a second recycle pump configured to return the third product separated by the second settler assembly into the second transfer tank; The second discharging end of the second transfer tank is communicated with the second feed back end of the electrochemical reactor through a third circulating pump. In one possible implementation, an electrochemical reactor includes an anode plate, a cathode plate, an anionic membrane, a cationic membrane, a first half-water splitting unit, and