CN115961292A - Carbon neutralization system and method for conversion and utilization of fossil energy - Google Patents

Abstract

The utility model provides a carbon neutralization system and method for the conversion and utilization of fossil energy, which is provided with a fossil energy utilization device, a carbon dioxide capture device, a thermal catalytic conversion device and/or a carbon dioxide electro-catalytic conversion device. The carbon dioxide capturing device is used for capturing carbon dioxide-containing flue gas generated by the fossil energy utilization device to obtain carbon dioxide. Both the thermocatalytic conversion device and the carbon dioxide electrocatalytic conversion device are used for catalytically converting carbon dioxide to generate carbon-based chemicals. That is to say, both can pass through thermal catalytic conversion device and convert carbon dioxide in order to generate carbon back chemicals, also can convert carbon dioxide in order to generate carbon back chemicals through carbon dioxide electro-catalytic conversion device to this realization thoroughly converts carbon dioxide into usable carbon back chemicals, realizes electric energy to chemical energy conversion and storage when reaching zero carbon emission.

Description

Carbon neutral system and method for conversion and utilization of fossil energy

technical field

The present disclosure relates to the technical field of carbon neutralization, in particular to a carbon neutralization system and method for conversion and utilization of fossil energy.

Background technique

At present, in my country's energy structure, fossil energy that produces carbon emissions accounts for 84%, and non-fossil energy accounts for 16%. The key to achieving carbon peaking and carbon neutrality is to achieve a clean energy structure and increase the proportion of renewable energy. In order to reduce carbon emissions, the use of fossil energy must be reduced, and fossil energy plays an irreplaceable role in ensuring the security and stability of the energy system for a long time.

Therefore, how to convert the carbon dioxide emitted during the use of fossil energy into usable carbon-based chemicals, realize the conversion and storage of electrical energy to chemical energy while achieving zero carbon emissions, and realize carbon neutrality in the use of fossil energy is an important issue for this application. The main problem to be solved.

Contents of the invention

In order to solve the above technical problems or at least partly solve the above technical problems, the present disclosure provides a carbon neutral system and method for conversion and utilization of fossil energy.

In a first aspect, the present disclosure provides a carbon neutralization system for conversion and utilization of fossil energy, including a fossil energy utilization device and a carbon dioxide capture device; the fossil energy utilization device is used to convert and utilize fossil energy to generate carbon dioxide-containing flue gas;

The capture inlet of the carbon dioxide capture device communicates with the carbon dioxide flue gas outlet of the fossil energy utilization device, the carbon dioxide capture device is used to capture and separate the carbon dioxide-containing flue gas to obtain carbon dioxide, and the carbon dioxide capture device has a carbon dioxide outlet from which said carbon dioxide can escape;

The carbon neutralization system for conversion and utilization of fossil energy also includes a thermal catalytic conversion device and/or a carbon dioxide electrocatalytic conversion device;

The thermal catalytic conversion device has a first inlet for hydrogen and a second inlet in communication with the carbon dioxide outlet, the thermal catalytic conversion device for catalytically converting the carbon dioxide and hydrogen to produce carbon-based chemicals ;

The carbon dioxide electrocatalytic conversion device has a third inlet for water to enter and a fourth inlet communicated with the carbon dioxide outlet; the carbon dioxide electrocatalytic conversion device is used for catalytic conversion of the carbon dioxide and water to generate carbon-based chemical Taste.

According to an embodiment of the present disclosure, the thermal catalytic conversion device includes a thermal catalytic conversion unit and a carbon monoxide catalytic conversion unit; the thermal catalytic conversion unit has the first inlet and the second inlet, and the thermal catalytic conversion a unit for catalytically converting said carbon dioxide and said hydrogen to produce said carbon-based chemical and carbon monoxide; said thermal catalytic conversion unit having a carbon monoxide outlet through which said carbon monoxide can be discharged;

The carbon monoxide catalytic conversion unit has a fifth inlet for hydrogen or water to enter and a sixth inlet communicated with the carbon monoxide outlet; the carbon monoxide catalytic conversion unit is used for electrocatalytic conversion of the carbon monoxide and water to generate carbon or, the carbon monoxide catalytic conversion unit is used for thermocatalytically converting the carbon monoxide and hydrogen to generate carbon-based chemicals.

According to an embodiment of the present disclosure, it further includes a product separation and circulation device, the product inlet of the product separation and circulation device communicates with the thermal catalytic conversion unit, and the product separation and circulation device is used to generate separation of carbon-based chemicals, carbon monoxide, and unconverted carbon dioxide to obtain said carbon-based chemicals, carbon monoxide, and carbon dioxide;

The carbon dioxide discharge port of the product separation and circulation device is in communication with the thermal catalytic conversion unit, so as to return the carbon dioxide to the thermal catalytic conversion unit;

The carbon monoxide discharge port of the product separation cycle device communicates with the carbon monoxide catalytic conversion unit to provide carbon monoxide to the carbon monoxide catalytic conversion unit.

According to an embodiment of the present disclosure, the carbon dioxide electrocatalytic conversion device further includes a carbon monoxide electrocatalytic conversion unit and a carbon monoxide catalytic conversion unit; the carbon dioxide electrocatalytic conversion carbon monoxide unit has the third inlet and the the fourth import;

The unit for producing carbon monoxide by electrocatalytic conversion of carbon dioxide is used for electrocatalytic conversion of the carbon dioxide and the water to generate carbon monoxide; the unit for producing carbon monoxide by electrocatalytic conversion of carbon dioxide has a carbon monoxide outlet for discharging the carbon monoxide;

The carbon monoxide catalytic conversion unit has a fifth inlet for hydrogen or water to enter and a sixth inlet connected to the carbon monoxide outlet; the carbon monoxide catalytic conversion unit is used for electrocatalytic conversion of the carbon monoxide and water to generate Carbon-based chemicals, or, the carbon monoxide catalytic conversion unit is used for thermo-catalytic conversion of the carbon monoxide and hydrogen to generate carbon-based chemicals.

According to an embodiment of the present disclosure, the carbon dioxide catalytic conversion device further includes a carbon dioxide one-step electrocatalytic conversion unit, and the carbon dioxide one-step electrocatalytic conversion unit has the third inlet and the fourth inlet;

The carbon dioxide one-step electrocatalytic conversion unit is used for electrocatalytic conversion of the carbon dioxide and the water to generate carbon-based chemicals.

According to an embodiment of the present disclosure, it also includes a carbon-based chemical utilization device;

The carbon-based chemical inlet of the carbon-based chemical utilization device communicates with the thermal catalytic conversion device and the carbon dioxide electrocatalytic conversion device, so that the carbon-based chemical enters into the carbon-based chemical utilization device storage or utilization to generate conversions, hydrogen and carbon dioxide;

The carbon dioxide exhaust port of the carbon-based chemical utilization device communicates with the carbon dioxide capture device to provide carbon dioxide to the carbon dioxide capture device.

According to an embodiment of the present disclosure, a renewable energy power generation device is further included, and the renewable energy power generation device is used to supply power to the fossil energy utilization device and the carbon dioxide electrocatalytic conversion device.

According to an embodiment of the present disclosure, it further includes a supporting public engineering device, the hydrogen outlet of the carbon-based chemical utilization device communicates with the supporting public engineering device, so as to provide hydrogen to the supporting public engineering device.

According to an embodiment of the present disclosure, the supporting public works device includes an electrolyzed water device, a green oxygen centralized distribution device, and a green hydrogen centralized distribution device;

The renewable energy power generation device is used to supply power to the electrolyzed water device, and the electrolyzed water device is respectively communicated with the green oxygen centralized distribution device and the green hydrogen centralized distribution device to provide oxygen to the green oxygen centralized distribution device , and provide hydrogen to the green hydrogen centralized distribution device.

According to an embodiment of the present disclosure, the green oxygen centralized distribution device communicates with the fossil energy utilization device to provide oxygen to the fossil energy utilization device;

The green hydrogen centralized distribution device is respectively connected with the fossil energy utilization device and the thermal catalytic conversion device, so as to provide hydrogen to the fossil energy utilization device and the thermal catalytic conversion device respectively.

In a second aspect, the present disclosure also provides a carbon neutralization method using the above-mentioned fossil energy conversion and carbon neutralization system, the method comprising:

Feed fossil energy into the fossil energy utilization device, so that the fossil energy is converted and utilized in the fossil energy conversion and utilization device to generate carbon dioxide-containing flue gas;

sending the carbon dioxide flue gas to the carbon dioxide capture device for capture, so as to separate the carbon dioxide;

Passing hydrogen into the thermal catalytic conversion device, and sending the separated carbon dioxide to the thermal catalytic conversion device for catalytic conversion with the hydrogen to generate carbon-based chemicals, and/or electrocatalytic conversion to carbon dioxide Water is fed into the device, and the separated carbon dioxide is sent to the carbon dioxide electrocatalytic conversion device for catalytic conversion to generate the carbon-based chemicals.

According to an embodiment of the present disclosure, the hydrogen gas is introduced into the thermal catalytic conversion device, and the separated carbon dioxide is sent to the thermal catalytic conversion device for catalytic conversion with the hydrogen to generate carbon-based chemical The product steps include:

Pass hydrogen into the thermal catalytic conversion unit, and send the separated carbon dioxide to the thermal catalytic conversion unit for catalytic conversion with the hydrogen to generate carbon monoxide and carbon-based chemicals;

Send the generated carbon monoxide to the carbon monoxide catalytic conversion unit, and feed water or hydrogen into the carbon monoxide catalytic conversion unit, so that the carbon monoxide and water undergo electrocatalytic conversion in the carbon monoxide catalytic conversion unit to generate carbon-based chemical products, or the carbon monoxide and hydrogen are thermally catalytically converted in the carbon monoxide catalytic conversion unit to produce carbon-based chemicals.

According to an embodiment of the present disclosure, water is introduced into the carbon dioxide electrocatalytic conversion device, and the separated carbon dioxide is sent to the carbon dioxide electrocatalytic conversion device for catalytic conversion to generate the carbon-based chemicals The steps include:

Passing the separated carbon dioxide to the carbon monoxide production unit by electrocatalytic conversion of carbon dioxide, and feeding water into the carbon monoxide production unit by electrocatalytic conversion of carbon dioxide, so that the carbon dioxide and water are carried out in the carbon monoxide production unit by electrocatalytic conversion of carbon dioxide Electrocatalytic conversion to generate carbon monoxide;

Send the generated carbon monoxide to the carbon monoxide catalytic conversion unit, and feed water or hydrogen into the carbon monoxide catalytic conversion unit, so that the carbon monoxide and water undergo electrocatalytic conversion in the carbon monoxide catalytic conversion unit to generate carbon-based chemical products, or the carbon monoxide and hydrogen are thermally catalytically converted in the carbon monoxide catalytic conversion unit to produce carbon-based chemicals.

According to an embodiment of the present disclosure, water is introduced into the carbon dioxide electrocatalytic conversion device, and the separated carbon dioxide is sent to the carbon dioxide electrocatalytic conversion device for catalytic conversion to generate the carbon-based chemicals The steps include:

Passing the separated carbon dioxide into the carbon dioxide one-step electrocatalytic conversion unit, and passing water into the carbon dioxide one-step electrocatalytic conversion unit, so that the carbon monoxide and water are electrocatalytically converted in the carbon dioxide one-step electrocatalytic conversion unit Generates carbon-based chemicals.

Compared with the prior art, the technical solutions provided by the embodiments of the present disclosure have the following advantages:

The present disclosure provides a carbon neutralization system and method for conversion and utilization of fossil energy. The carbon neutralization system for conversion and utilization of fossil energy is provided with a fossil energy utilization device, a carbon dioxide capture device, and a thermal catalytic conversion device and/or carbon dioxide electrocatalysis conversion device. Among them, the carbon dioxide capture device is used to capture the carbon dioxide-containing flue gas generated by the fossil energy utilization device to obtain carbon dioxide. Thermal catalytic converters are used to catalytically convert carbon dioxide and hydrogen captured by carbon dioxide capture devices to produce carbon-based chemicals. CO2 electrocatalytic conversion devices catalytically convert carbon dioxide and water to produce carbon-based chemicals. That is to say, the fossil energy conversion of the present disclosure utilizes a carbon neutral system, which can convert carbon dioxide through a thermal catalytic conversion device to generate carbon-based chemicals, and can also convert carbon dioxide through a carbon dioxide electrocatalytic conversion device to generate carbon-based chemicals. Chemicals, in order to completely convert carbon dioxide into usable carbon-based chemicals, achieve zero carbon emissions and at the same time realize the conversion and storage of electrical energy to chemical energy.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure.

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, In other words, other drawings can also be obtained from these drawings without paying creative labor.

FIG. 1 is a flowchart of a carbon neutral system for conversion and utilization of fossil energy according to an embodiment of the present disclosure;

Fig. 2 is a schematic structural diagram of a carbon neutralization system for conversion and utilization of fossil energy according to an embodiment of the present disclosure;

3 is a schematic structural diagram of another carbon neutralization system for conversion and utilization of fossil energy according to an embodiment of the present disclosure;

FIG. 4 is a schematic flowchart of a carbon neutralization method using the carbon neutralization system for conversion of fossil energy according to an embodiment of the present disclosure.

Among them, 1. Fossil energy utilization device; 11. Carbon dioxide flue gas outlet; 2. Carbon dioxide capture device; 21. Capture inlet; 22. Carbon dioxide outlet; 3. Thermal catalytic conversion device; 31. First inlet; 32. Second inlet 33. Thermal catalytic conversion unit; 34. Carbon monoxide catalytic conversion unit; 341. The sixth inlet; 342. The fifth inlet; 35. Carbon monoxide outlet; 4. Carbon dioxide electrocatalytic conversion device; 41. The fourth inlet; Catalytic conversion to carbon monoxide unit; 421. Carbon monoxide outlet; 43. One-step electrocatalytic conversion unit of carbon dioxide; 5. Product separation and circulation device; 51. Product import; 52. Carbon monoxide discharge port; 6. Carbon-based chemical utilization device; Import of carbon-based chemicals; 62. Carbon dioxide exhaust port; 63. Hydrogen outlet; 7. Renewable energy power generation device; 81. Electrolyzed water device; 82. Centralized distribution device for green oxygen; 83. Centralized distribution device for green hydrogen.

Detailed ways

In order to more clearly understand the above objects, features and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that, in the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the present disclosure, but the present disclosure can also be implemented in other ways than described here; obviously, the embodiments in the description are only some of the embodiments of the present disclosure, and Not all examples.

Embodiment one

Referring to Figures 1 to 3, this embodiment provides a carbon neutralization system for conversion and utilization of fossil energy, including a fossil energy utilization device 1, a carbon dioxide capture device 2, a thermal catalytic conversion device 3 and/or a carbon dioxide electrocatalytic conversion device 4 .

Among them, the fossil energy utilization device 1 is used to convert and utilize fossil energy to generate carbon dioxide-containing flue gas. When actually implemented, the fossil energy utilization device 1 includes a coal-fired power generation unit, a steel smelting furnace and a coking chemical unit, a cement calciner, a building material smelting furnace, a coal chemical industry, a petrochemical industry, a natural gas chemical conversion furnace, etc. The hot flue gas is purified and cooled to obtain low-temperature carbon dioxide-containing flue gas, which is sent to the subsequent carbon dioxide capture device 2 for carbon dioxide separation and capture.

Wherein, the capture inlet 21 of the carbon dioxide capture device 2 communicates with the carbon dioxide flue gas outlet 11 of the fossil energy utilization device 1, and the carbon dioxide capture device 2 is used to capture and separate the carbon dioxide-containing flue gas to obtain carbon dioxide. Carbon dioxide outlet 22 for carbon dioxide discharge.

In actual implementation, different carbon dioxide capture devices 2 and processes can be used to capture carbon dioxide according to the difference in carbon dioxide concentration in the carbon dioxide-containing flue gas. Exemplarily, absorption method, adsorption method, membrane separation method, etc. can be used for trapping.

Exemplarily, the carbon dioxide capture device 2 using the absorption method includes a flue gas pretreatment unit, an absorption tower, a regeneration tower, an exhaust scrubbing system, a solution reboiler, a product gas condenser, a gas-liquid separator, a compressor, and the like. Exemplarily, the carbon dioxide capture device 2 using the absorption method includes a flue gas dedusting unit, an adsorption tower, a compressor, and the like. Exemplarily, the carbon dioxide capture device 2 using the membrane separation method includes a gas purification unit, a membrane separation module, and the like. The captured carbon dioxide is sent to the downstream through the compressor for conversion and utilization of carbon dioxide.

Wherein, the thermal catalytic conversion device 3 has a first inlet 31 for hydrogen to enter and a second inlet 32 connected to the carbon dioxide outlet 22, and the thermal catalytic conversion device 3 is used for catalytic conversion of carbon dioxide and hydrogen to generate carbon-based chemicals. And/or, the carbon dioxide electrocatalytic conversion device 4 has a third inlet for water to enter and a fourth inlet 41 communicated with the carbon dioxide outlet 22, the carbon dioxide electrocatalytic conversion device 4 is used for catalytic conversion of carbon dioxide and water to generate carbon-based chemical Taste.

In summary, this embodiment provides a carbon neutralization system for conversion and utilization of fossil energy. The carbon neutralization system for conversion and utilization of fossil energy is provided with a fossil energy utilization device 1, a carbon dioxide capture device 2, and a thermal catalytic conversion device 3 and /or carbon dioxide electrocatalytic conversion device 4 . Wherein, the carbon dioxide capture device 2 is used to capture the carbon dioxide-containing flue gas generated by the fossil energy utilization device 1 to obtain carbon dioxide. The thermal catalytic conversion device 3 is used for catalytic conversion of carbon dioxide and hydrogen captured by the carbon dioxide capture device 2 to generate carbon-based chemicals. The carbon dioxide electrocatalytic conversion device 4 is used for catalytic conversion of carbon dioxide and water captured by the carbon dioxide capture device 2 to generate carbon-based chemicals. That is to say, the carbon neutralization system for fossil energy conversion in this embodiment can either convert carbon dioxide through the thermal catalytic conversion device 3 to generate carbon-based chemicals, or convert carbon dioxide through the carbon dioxide electrocatalytic conversion device 4 to generate carbon-based chemicals. Generate carbon-based chemicals, so as to completely convert carbon dioxide into usable carbon-based chemicals, achieve zero carbon emissions and realize the conversion and storage of electrical energy to chemical energy.

Referring to FIG. 2 and FIG. 3 , in an implementation of this embodiment, the thermal catalytic conversion device 3 includes a thermal catalytic conversion unit 33 and a carbon monoxide catalytic conversion unit 34 .

Wherein, the thermal catalytic conversion unit 33 has a first inlet 31 for hydrogen to enter and a second inlet 32 communicated with the carbon dioxide outlet 22, and the thermal catalytic conversion unit 33 is used for catalytic conversion of carbon dioxide and hydrogen to generate carbon-based chemicals and Carbon monoxide, thermal catalytic conversion unit 33 has a carbon monoxide outlet 35 through which carbon monoxide can be discharged.

In actual implementation, the thermo-catalytic conversion unit 33 is used for thermo-catalytic conversion of carbon dioxide and hydrogen entering from the first inlet 31 under the catalytic action of the catalyst to generate carbon-based chemicals, carbon dioxide and carbon monoxide mixture. Specifically, the carbon dioxide and hydrogen in the thermal catalytic conversion unit 33 can obtain different carbon-based chemicals containing ethylene, aromatics, methanol, ethanol, etc. under different catalysts, different control temperatures, pressures, and carbon-to-hydrogen ratios, and It also contains a certain amount of CO2 and CO. After the mixture is purified and cooled by the cooling and purification unit, it can be sent to the subsequent device for separation. Specifically, the temperature during thermal catalytic conversion in the thermal catalytic conversion unit 33 can be between 150°C and 350°C, and the reaction pressure is normal pressure -5Mpa.

Wherein, the carbon monoxide catalytic conversion unit 34 has the fifth inlet for hydrogen or water to enter and the sixth inlet 341 communicated with the carbon monoxide outlet 35, the carbon monoxide catalytic conversion unit 34 is used for catalytic conversion of carbon monoxide and water or hydrogen to generate carbon-based Chemicals.

In one implementation manner, as shown in FIG. 2 , the carbon monoxide catalytic conversion unit 34 is a carbon monoxide electrocatalytic conversion unit. The carbon monoxide electrocatalytic conversion unit is used for electrocatalytic conversion of the carbon monoxide produced by the thermal catalytic conversion unit 33 and the water entering through the fifth inlet, so as to generate carbon-based chemicals and realize zero carbon emission.

In another implementation manner, as shown in FIG. 3 , the carbon monoxide catalytic conversion unit 34 is a carbon monoxide hydrogenation catalytic conversion unit. The carbon monoxide hydrogenation catalytic conversion unit is used for thermal catalytic conversion of the carbon monoxide produced by the thermal catalytic conversion unit 33 and the hydrogen entering through the fifth inlet 342 to generate carbon-based chemicals and realize zero carbon emission.

With reference to shown in Fig. 2, also comprise product separation and circulation device 5, the product inlet 51 of product separation and circulation device 5 is communicated with thermal catalytic conversion unit 33, and product separation and circulation device 5 is used for the carbon-based chemical that thermal catalytic conversion unit 33 conversion generates The products, carbon monoxide and unconverted carbon dioxide in the thermal catalytic conversion unit 33 are separated to obtain carbon-based chemicals, carbon monoxide and carbon dioxide.

In actual implementation, the carbon dioxide discharge port of the product separation and circulation device 5 communicates with the thermal catalytic conversion unit 33 to return carbon dioxide to the thermal catalytic conversion unit 33 . The carbon monoxide discharge port 52 of the product separation cycle device 5 communicates with the carbon monoxide catalytic conversion unit 34 to provide carbon monoxide to the carbon monoxide catalytic conversion unit 34 .

Exemplarily, the product separation and circulation device 5 may specifically include a carbon dioxide separation unit, a carbon monoxide separation unit, a product separation unit, and a gas pressurization circulation unit. The carbon dioxide separation unit separates carbon dioxide from the mixture generated by the thermal catalytic conversion unit 33 and returns it to the thermal catalytic conversion unit 33 for catalytic conversion under the action of the gas pressurization unit to generate carbon-based chemicals, thereby achieving zero carbon emission. The carbon monoxide separation unit separates the carbon monoxide in the mixture and sends it to the carbon monoxide catalytic conversion unit 34 for subsequent conversion and generation of carbon-based chemicals. The product separation device 5 separates the carbon-based chemicals in the mixture for subsequent utilization.

In another implementation manner of this embodiment, the carbon dioxide electrocatalytic conversion device 4 further includes a carbon monoxide electrocatalytic conversion unit 42 and a carbon monoxide catalytic conversion unit.

Wherein, the carbon monoxide electrocatalytic conversion unit 42 has a third inlet and a fourth inlet 41 . The carbon monoxide electrocatalytic conversion unit 42 is used for electrocatalytic conversion of carbon dioxide and water to generate carbon monoxide. The unit 42 for producing carbon monoxide by electrocatalytic conversion of carbon dioxide has a carbon monoxide outlet 421 for discharging carbon monoxide.

Wherein, the carbon monoxide catalytic conversion unit has a fifth inlet for hydrogen or water and a sixth inlet connected with the carbon monoxide outlet 421 . A carbon monoxide catalytic conversion unit is used for the electrocatalytic conversion of carbon monoxide and water to produce carbon-based chemicals, or a carbon monoxide catalytic conversion unit is used for the thermocatalytic conversion of carbon monoxide and hydrogen to produce carbon-based chemicals.

During specific implementation, with reference to shown in Figure 2, the carbon monoxide catalytic conversion unit 34 that is communicated with thermal catalytic conversion unit 33 and the carbon monoxide catalytic conversion unit that is communicated with carbon monoxide electrocatalytic conversion system carbon monoxide unit 42 can be the same, that is, the same carbon monoxide catalytic conversion The unit is used to electrocatalytically convert the carbon monoxide mixed with carbon dioxide produced by the electrocatalytic conversion of carbon dioxide to carbon monoxide unit 42 and the carbon monoxide generated by the conversion of the thermal catalytic conversion unit 33 with water to produce carbon-based chemicals mainly composed of ethylene and ethanol Afterwards, carbon-based chemicals and carbon monoxide can be obtained through the product separation and circulation device 5, and the carbon monoxide can be pressurized and then continue to be catalytically converted in the carbon monoxide catalytic conversion device 34 to achieve zero carbon emissions.

In yet another implementation of this embodiment, the carbon dioxide electrocatalytic conversion device 4 can be configured as a carbon dioxide one-step electrocatalytic conversion unit 43 , and the carbon dioxide one-step electrocatalytic conversion unit 43 has a third inlet and a fourth inlet 41 . The third inlet is used to feed water, and the fourth inlet 41 communicates with the carbon dioxide outlet 22 of the carbon dioxide capture device 2 . The carbon dioxide one-step electrocatalytic conversion unit 43 is used for electrocatalytic conversion of carbon dioxide and water entering from the third inlet to generate carbon-based chemicals mainly ethylene and ethanol, which are subsequently purified and separated to obtain carbon-based chemicals and unconverted The carbon dioxide and unconverted carbon dioxide can be sent to the carbon dioxide capture device 2 for subsequent capture, so as to achieve zero carbon emissions.

In actual implementation, the carbon-neutral system for conversion and utilization of fossil energy also includes a carbon-based chemical utilization device 6 and supporting public works devices. The carbon-based chemical inlet 61 of the carbon-based chemical utilization device 6 communicates with the thermal catalytic conversion device 3 and the carbon dioxide electrocatalytic conversion device 4, so that the carbon-based chemical enters the carbon-based chemical utilization device 6 for storage or utilization. Converts, hydrogen and carbon dioxide are produced. Specifically, the carbon-based chemical inlet 61 of the carbon-based chemical utilization device 6 can communicate with the thermal catalytic conversion unit 33 , the carbon monoxide catalytic conversion unit 34 and the carbon dioxide one-step electrocatalytic conversion unit 43 .

Wherein, the carbon dioxide exhaust port 62 of the carbon-based chemical utilization device 6 communicates with the carbon dioxide capture device 2 to provide carbon dioxide to the carbon dioxide capture device 2, that is, the carbon dioxide generated after the carbon-based chemical utilization device 6 is converted and utilized continues Return to the carbon dioxide capture device 2 for capture for subsequent conversion, so as to achieve zero carbon emissions.

The converted product can be used directly, such as methanol, etc., which can be directly used in automobiles and other vehicles, methanol-based downstream chemical utilization systems, etc.; the CO2 generated during the conversion process can be sent to the carbon dioxide capture device 2 for capture and then recycled into the thermal catalytic conversion device 3 and the carbon dioxide electrocatalytic conversion device 4 for conversion and utilization again. The converted product can also be used indirectly, for example, the reformed product such as methanol can be used to obtain hydrogen and CO2, and the CO2 is sent to the carbon dioxide capture device 2 for recycling, and the hydrogen is used as energy or raw material to be sent to the downstream energy-consuming area for conversion, access and use.

Wherein, the hydrogen gas outlet 63 of the carbon-based chemical utilization device 6 communicates with the supporting public engineering device, so as to provide hydrogen gas to the supporting public engineering device. That is to say, the hydrogen gas generated after conversion by the carbon-based chemical utilization device 6 can be returned to the supporting public works device for storage and use. It should be noted that the supporting public engineering device here can provide hydrogen to the thermal catalytic conversion unit 33, so that the carbon dioxide and hydrogen entering the thermal catalytic conversion unit 33 undergo thermal catalytic conversion to generate carbon-based chemicals or carbon monoxide. In addition, the supporting public engineering device can provide hydrogen to the carbon monoxide catalytic conversion unit 34, where the carbon monoxide catalytic conversion unit 34 is a carbon monoxide hydrogenation catalytic device, so that the carbon monoxide and hydrogen entering the carbon monoxide catalytic conversion unit undergo thermal catalytic conversion to generate Carbon-based chemicals.

During specific implementation, a renewable energy power generation device 7 may also be provided, which is used to supply power to the fossil energy utilization device 1 and the carbon dioxide electrocatalytic conversion device 4 for corresponding conversion.

Exemplarily, the renewable energy power generation device 7 is used to supply power to the carbon monoxide electrocatalytic conversion to carbon monoxide unit 42 , so that the carbon dioxide and water in the carbon dioxide electrocatalytic conversion to carbon monoxide unit 42 undergo electrocatalytic conversion. Alternatively, the renewable energy power generation device 7 is used to supply power to the carbon monoxide catalytic conversion unit 34, so that the carbon monoxide and water in the carbon monoxide catalytic conversion unit 34 undergo electrocatalytic conversion to generate carbon-based chemicals, and the carbon monoxide catalytic conversion device 34 here is Carbon monoxide electrocatalytic conversion device.

The renewable energy generating device 7 may specifically include renewable energy generating devices that do not generate carbon emissions, such as solar energy, hydraulic energy, wind energy, geothermal energy, and tidal energy, and may be a single energy source or a combined form. For example, the photovoltaic power generation device specifically includes: photovoltaic square array, battery pack and controller, power distribution cabinet and sun tracking control system, etc. Since the photovoltaic power generation is directly direct current, it can be directly used in the subsequent electrolytic cell system, and there is no need to set up a rectifier in the intermediate link; Wind power generation devices specifically include: towers, generators, gear speed increasers, pitch and yaw systems, blades, couplings, electronic control systems, etc. Wind power generation is alternating current, which is subsequently converted into direct current through a rectifier, and then For subsequent electrolytic cell use. These renewable energy power generation devices do not produce carbon emissions, and the green power generated includes direct current and alternating current. When in specific use, direct current and alternating current can be converted and utilized according to actual needs. Exemplarily, when direct current is required, the alternating current generated by the renewable energy power generation device may be converted into direct current through a rectifier.

Referring to Fig. 2 and Fig. 3, the supporting public engineering devices can be set to include electrolyzed water device 81, green oxygen centralized distribution device 82 and green hydrogen centralized distribution device 83.

In actual implementation, the renewable energy power generation device 7 can be used to supply power to the electrolyzed water device 81, and the electrolyzed water device 81 decomposes water into hydrogen and oxygen under the action of electric current. The electrolyzed water device 81 communicates with the green oxygen centralized distribution device 82 and the green hydrogen centralized distribution device 83 respectively to provide oxygen to the green oxygen centralized distribution device 82 and hydrogen to the green hydrogen centralized distribution device 83 . Wherein, the green oxygen centralized distribution device 82 communicates with the fossil energy utilization device 1 to provide oxygen to the fossil energy utilization device 1 .

Among them, the green hydrogen centralized distribution device 83 is respectively connected with the fossil energy utilization device 1, the thermal catalytic conversion unit 33 and the carbon monoxide catalytic conversion unit 34, so as to provide the fossil energy utilization device 1, the thermal catalytic conversion unit 33 and the carbon monoxide catalytic conversion unit 34 respectively. hydrogen. That is to say, in this embodiment, the water, electricity, and gas used by the fossil energy utilization device 1 all come from the green electricity, green hydrogen, and green oxygen generated by the renewable energy power generation device 7 and supporting public works devices. The carbon dioxide emission in the fossil energy utilization device 1 mainly comes from the carbon in the fossil raw materials.

Exemplarily, the green power from the renewable energy power generation device 7 can be used to electrolyze the water from the water pretreatment device in the electrolytic water device to obtain hydrogen and oxygen, which are sent to the green oxygen centralized distribution device 82 and green hydrogen respectively. Centralized distribution device 83, green hydrogen is stably transported to fossil energy utilization device 1 and thermal catalytic conversion utilization device 3 according to downstream needs and proportions, and then thermal catalytic conversion device 3 can use catalytic conversion technology to directly convert carbon dioxide, hydrogen, etc. into olefins Carbon-based chemical products such as alkanes, alcohols such as methanol and ethanol, and oxygenates such as formic acid. The rich hydrogen obtained by the electrolysis water device 81 can also be quantitatively distributed through the green hydrogen centralized distribution device 83, and directly used downstream, such as used as energy and raw materials for transportation, chemical production, steel smelting and other industries, and can also be converted into electricity usage.

In addition, the water pretreatment device can pretreat mine wastewater, industrial domestic sewage, seawater, etc. to obtain the required water. The water pretreatment device can be set to include a pretreatment unit (removing large particles of impurities, etc.), a sedimentation tank, Treatment ponds, reverse osmosis units, etc. After being treated by the water pretreatment device, the water that meets the downstream needs is obtained.

It should be noted that, in this embodiment, the carbon dioxide one-step electrocatalytic conversion unit 33 , the carbon dioxide electrocatalytic conversion to carbon monoxide unit 42 , and the carbon monoxide catalytic conversion unit 34 can specifically use electrolytic cells for conversion. The electrolytic cell may be in the form of a liquid flow electrolytic reactor or a membrane electrode assembly reactor. Liquid flow electrolysis reactor includes basic gas diffusion electrode, exchange membrane, anode electrode system, in which basic gas diffusion electrode is the core component, including carbon fiber skeleton, carbon paper, catalyst, electrode plate and so on. Membrane electrode assembly reactor includes gas diffusion layer, cathode catalyst + membrane assembly layer, anode catalyst layer, etc. The specific form of the electrolytic cell is not limited, the reduction reaction of carbon dioxide and CO occurs at the cathode, and the oxygen evolution reaction occurs at the anode to generate oxygen, that is, green oxygen, and one-step electrocatalytic conversion of carbon dioxide unit 43, electrocatalytic conversion of carbon dioxide to carbon monoxide unit 42, and catalytic conversion unit of carbon monoxide 34 The generated green oxygen is transported to the green oxygen centralized distribution device 82 for centralized treatment and utilization.

In addition, the electrocatalytic conversion of carbon dioxide to carbon monoxide unit 42 not only converts carbon dioxide and water into carbon monoxide by electrocatalysis, but also generates oxygen, which can be sent to the green oxygen centralized distribution device 82 for storage and utilization. The carbon dioxide one-step electrocatalytic conversion unit 43 performs electrocatalytic conversion of carbon dioxide and water to generate carbon-based chemicals, and also generates oxygen, which can be transported to the green oxygen centralized distribution device 82 for storage and utilization. The carbon monoxide electrocatalytic conversion device catalyzes conversion of carbon dioxide and water to generate carbon-based chemicals, and also generates oxygen, which can be transported to the green oxygen centralized distribution device 82 for storage and utilization.

Embodiment two

As shown in Figure 4, this embodiment provides a method for carbon neutralization by utilizing a carbon neutralization system for conversion of fossil energy. Achieve zero carbon emissions and conversion and storage of chemical energy.

The carbon-neutral method specifically includes the following steps:

S101: Feed fossil energy into the fossil energy utilization device, so that the fossil energy is converted and utilized in the fossil energy conversion and utilization device to generate carbon dioxide-containing flue gas;

S102: sending the carbon dioxide flue gas to the carbon dioxide capture device for capture, so as to separate the carbon dioxide;

S103: Pass hydrogen into the thermal catalytic conversion device, and send the separated carbon dioxide to the thermal catalytic conversion device for catalytic conversion with hydrogen to generate carbon-based chemicals, and/or, pass water into the carbon dioxide electrocatalytic conversion device , and send the separated carbon dioxide to the carbon dioxide electrocatalytic conversion device for catalytic conversion to generate carbon-based chemicals.

Specifically, fossil energy utilization devices use coal-based fossil energy directly for energy production and consumption, such as coal-fired power generation, coal-fired heat supply, iron and steel smelting, cement calcination production, building material production, chemical production and use processes middle. In the process of fossil energy utilization, a certain scale of public works is required, such as water, steam, electricity, oxygen, hydrogen, etc. The existing process steam is generated by coal-fired boilers, electricity comes from coal-fired power generation, and oxygen and hydrogen are produced by fossil energy processes. Oxygen and hydrogen, the overall utility raw material acquisition process generates significant carbon emissions.

Wherein, the step of feeding hydrogen into the thermal catalytic conversion device, and sending the separated carbon dioxide to the thermal catalytic conversion device for catalytic conversion with hydrogen to generate carbon-based chemicals includes: first, feeding Hydrogen, and the separated carbon dioxide is sent to a thermal catalytic conversion unit for catalytic conversion with hydrogen to produce carbon monoxide and carbon-based chemicals. Then, the generated carbon monoxide is sent to the carbon monoxide catalytic conversion unit, and water or hydrogen is passed into the carbon monoxide catalytic conversion unit, so that carbon monoxide and water are electrocatalytically converted in the carbon monoxide catalytic conversion unit to generate carbon-based chemicals, or carbon monoxide and hydrogen Thermal catalytic conversion is performed in a carbon monoxide catalytic conversion unit to produce carbon-based chemicals. For details, refer to the relevant description in Embodiment 1.

Wherein, the step of passing water into the carbon dioxide electrocatalytic conversion device, and sending the separated carbon dioxide to the carbon dioxide electrocatalytic conversion device for catalytic conversion to generate carbon-based chemicals includes: first, passing the separated carbon dioxide to the carbon dioxide electrocatalytic conversion device; The carbon monoxide is produced by catalytic conversion, and water is fed into the carbon monoxide production unit by electrocatalytic conversion of carbon dioxide, so that carbon dioxide and water undergo electrocatalytic conversion in the carbon monoxide production unit by electrocatalytic conversion of carbon dioxide to generate carbon monoxide. Then, the generated carbon monoxide is sent to the carbon monoxide catalytic conversion unit, and water or hydrogen is passed into the carbon monoxide catalytic conversion unit, so that carbon monoxide and water are electrocatalytically converted in the carbon monoxide catalytic conversion unit to generate carbon-based chemicals, or carbon monoxide and hydrogen Thermal catalytic conversion is performed in a carbon monoxide catalytic conversion unit to produce carbon-based chemicals. For the specific renewable energy power generation device, reference may be made to the related description of Embodiment 1, which will not be repeated here.

Further, after conversion to generate carbon-based chemicals, the generated carbon-based chemicals are sent to a carbon-based chemical utilization device for storage or utilization to generate conversion products, hydrogen and carbon dioxide. The carbon dioxide is sent to the carbon dioxide capture unit. The hydrogen is sent to the supporting public works device.

It should be noted that in this article, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these No such actual relationship or order exists between entities or operations. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The above descriptions are only specific implementation manners of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (14)

1. A carbon neutral system for conversion and utilization of fossil energy, characterized in that it comprises a fossil energy utilization device (1) and a carbon dioxide capture device (2); the fossil energy utilization device (1) is used to convert and utilize fossil energy to generate carbon dioxide-containing flue gas; The capture inlet (21) of the carbon dioxide capture device (2) communicates with the carbon dioxide flue gas outlet (11) of the fossil energy utilization device (1), and the carbon dioxide capture device (2) is used to treat the carbon dioxide-containing smoke gas is captured and separated to obtain carbon dioxide, and the carbon dioxide capture device (2) has a carbon dioxide outlet (22) for the carbon dioxide to be discharged; The carbon neutralization system for conversion and utilization of fossil energy also includes a thermal catalytic conversion device (3) and/or a carbon dioxide electrocatalytic conversion device (4); The thermal catalytic conversion device (3) has a first inlet (31) for hydrogen to enter and a second inlet (32) communicated with the carbon dioxide outlet (22), and the thermal catalytic conversion device (3) is used for catalytically converting said carbon dioxide and hydrogen to produce carbon-based chemicals; The carbon dioxide electrocatalytic conversion device (4) has a third inlet for water to enter and a fourth inlet (41) communicated with the carbon dioxide outlet (22); the carbon dioxide electrocatalytic conversion device (4) is used for Catalytic conversion of carbon dioxide and water to produce carbon-based chemicals. 2. The carbon neutralization system for conversion and utilization of fossil energy according to claim 1, characterized in that, the thermal catalytic conversion device (3) comprises a thermal catalytic conversion unit (33) and a carbon monoxide catalytic conversion unit (34); The thermal catalytic conversion unit (33) has the first inlet (31) and the second inlet (32), and the thermal catalytic conversion unit (33) is used to catalytically convert the carbon dioxide and the hydrogen to generate said carbon-based chemicals and carbon monoxide; said thermocatalytic conversion unit (33) having a carbon monoxide outlet (35) through which said carbon monoxide can be discharged; The carbon monoxide catalytic conversion unit (34) has a fifth inlet (341) for hydrogen or water to enter and a sixth inlet (342) communicated with the carbon monoxide outlet (35); the carbon monoxide catalytic conversion unit (34) It is used for electrocatalytic conversion of the carbon monoxide and water to generate carbon-based chemicals, or, the carbon monoxide catalytic conversion unit (34) is used for thermal catalytic conversion of the carbon monoxide and hydrogen to generate carbon-based chemicals. 3. The carbon neutralization system for conversion and utilization of fossil energy according to claim 2, characterized in that it also includes a product separation and circulation device (5), the product inlet (51) of the product separation and circulation device (5) is connected to the The thermal catalytic conversion unit (33) is connected, and the product separation circulation device (5) is used to separate the carbon-based chemicals, carbon monoxide and unconverted carbon dioxide produced by the thermal catalytic conversion unit (33), so as to obtain the Carbon-based chemicals, carbon monoxide and carbon dioxide; The carbon dioxide discharge port of the product separation and circulation device (5) is communicated with the thermal catalytic conversion unit (33), so as to return the carbon dioxide to the thermal catalytic conversion unit (33); The carbon monoxide discharge port (52) of the product separation and circulation device (5) communicates with the carbon monoxide catalytic conversion unit (34) to provide carbon monoxide to the carbon monoxide catalytic conversion unit (34). 4. The carbon neutralization system for conversion and utilization of fossil energy according to claim 1, wherein the carbon dioxide electrocatalytic conversion device (4) also includes a carbon monoxide unit (42) and a carbon monoxide catalytic conversion unit ( 34); The carbon monoxide unit (42) for producing carbon monoxide by electrocatalytic conversion of carbon dioxide has the third inlet and the fourth inlet (41); The carbon monoxide electrocatalytic conversion unit (42) is used for electrocatalytic conversion of the carbon dioxide and the water to generate carbon monoxide; the carbon monoxide electrocatalytic conversion production unit (42) has a carbon monoxide outlet (421); The carbon monoxide catalytic conversion unit has a fifth inlet for hydrogen or water to enter and a sixth inlet connected to the carbon monoxide outlet (421); the carbon monoxide catalytic conversion unit is used to electrocatalyze the carbon monoxide and water conversion to generate carbon-based chemicals, or the carbon monoxide catalytic conversion unit is used for thermocatalytic conversion of the carbon monoxide and hydrogen to generate carbon-based chemicals. 5. The carbon neutralization system for conversion and utilization of fossil energy according to claim 1, characterized in that, the carbon dioxide catalytic conversion device (4) also includes a carbon dioxide one-step electrocatalytic conversion unit (43), and the carbon dioxide one-step electrocatalytic conversion A unit (43) has said third inlet and said fourth inlet (41); The carbon dioxide one-step electrocatalytic conversion unit (43) is used for electrocatalytic conversion of the carbon dioxide and the water to generate carbon-based chemicals. 6. The carbon neutralization system for conversion and utilization of fossil energy according to any one of claims 1 to 5, characterized in that it also includes a carbon-based chemical utilization device (6); The carbon-based chemical inlet (61) of the carbon-based chemical utilization device (6) communicates with the thermal catalytic conversion device (3) and the carbon dioxide electrocatalytic conversion device (4), so that the carbon-based chemical The product enters the carbon-based chemical utilization device (6) for storage or utilization to generate conversion products, hydrogen and carbon dioxide; The carbon dioxide exhaust port (62) of the carbon-based chemical utilization device (6) communicates with the carbon dioxide capture device (2), so as to provide carbon dioxide to the carbon dioxide capture device (2). 7. The carbon neutral system for conversion and utilization of fossil energy according to claim 6, characterized in that, it also includes a renewable energy power generation device (7), and the renewable energy power generation device (7) is used to supply the fossil energy The device (1) and the carbon dioxide electrocatalytic conversion device (4) are used to supply power. 8. The carbon neutralization system for conversion and utilization of fossil energy according to claim 7, characterized in that it also includes a supporting public works device, the hydrogen outlet (63) of the carbon-based chemical utilization device (6) is connected with the supporting Utilities communicate to provide hydrogen to the associated utilities. 9. The carbon neutralization system for conversion and utilization of fossil energy according to claim 8, characterized in that, the supporting public works devices include electrolysis water device (81), green oxygen centralized distribution device (82) and green hydrogen centralized distribution device (83); The renewable energy power generation device (7) is used to supply power to the electrolyzed water device (81), and the electrolyzed water device (81) is connected with the green oxygen centralized distribution device (82) and the green hydrogen centralized distribution device ( 83) to communicate to provide oxygen to the green oxygen centralized distribution device (82), and to provide hydrogen to the green hydrogen centralized distribution device (83). 10. The carbon neutralization system for conversion and utilization of fossil energy according to claim 9, characterized in that the green oxygen centralized distribution device (82) communicates with the fossil energy utilization device (1) to supply the fossil energy Utilize device (1) to provide oxygen; The green hydrogen centralized distribution device (83) is respectively communicated with the fossil energy utilization device (1) and the thermal catalytic conversion device (3), so as to supply the fossil energy utilization device (1) and the thermal catalytic converter The reforming unit (3) provides hydrogen. 11. A method for carbon neutralization using the carbon neutralization system for conversion of fossil energy according to any one of claims 1 to 10, characterized in that the method comprises: Feed fossil energy into the fossil energy utilization device, so that the fossil energy is converted and utilized in the fossil energy conversion and utilization device to generate carbon dioxide-containing flue gas; sending the carbon dioxide flue gas to the carbon dioxide capture device for capture, so as to separate the carbon dioxide; Passing hydrogen into the thermal catalytic conversion device, and sending the separated carbon dioxide to the thermal catalytic conversion device for catalytic conversion with the hydrogen to generate carbon-based chemicals, and/or electrocatalytic conversion to carbon dioxide Water is fed into the device, and the separated carbon dioxide is sent to the carbon dioxide electrocatalytic conversion device for catalytic conversion to generate the carbon-based chemicals. 12. The method according to claim 11, wherein hydrogen is introduced into the thermal catalytic converter, and the separated carbon dioxide is sent to the thermal catalytic converter to be catalyzed with the hydrogen. The steps of conversion to produce carbon-based chemicals include: Pass hydrogen into the thermal catalytic conversion unit, and send the separated carbon dioxide to the thermal catalytic conversion unit for catalytic conversion with the hydrogen to generate carbon monoxide and carbon-based chemicals; Send the generated carbon monoxide to the carbon monoxide catalytic conversion unit, and feed water or hydrogen into the carbon monoxide catalytic conversion unit, so that the carbon monoxide and water undergo electrocatalytic conversion in the carbon monoxide catalytic conversion unit to generate carbon-based chemical products, or the carbon monoxide and hydrogen are thermally catalytically converted in the carbon monoxide catalytic conversion unit to produce carbon-based chemicals. 13. The method according to claim 11, wherein water is introduced into the carbon dioxide electrocatalytic conversion device, and the separated carbon dioxide is sent to the carbon dioxide electrocatalytic conversion device for catalytic conversion to generate The steps of the carbon-based chemicals include: Passing the separated carbon dioxide to the carbon monoxide production unit by electrocatalytic conversion of carbon dioxide, and feeding water into the carbon monoxide production unit by electrocatalytic conversion of carbon dioxide, so that the carbon dioxide and water are carried out in the carbon monoxide production unit by electrocatalytic conversion of carbon dioxide Electrocatalytic conversion to generate carbon monoxide; Send the generated carbon monoxide to the carbon monoxide catalytic conversion unit, and feed water or hydrogen into the carbon monoxide catalytic conversion unit, so that the carbon monoxide and water undergo electrocatalytic conversion in the carbon monoxide catalytic conversion unit to generate carbon-based chemical products, or the carbon monoxide and hydrogen are thermally catalytically converted in the carbon monoxide catalytic conversion unit to produce carbon-based chemicals. 14. The method according to claim 11, wherein water is introduced into the carbon dioxide electrocatalytic conversion device, and the separated carbon dioxide is sent to the carbon dioxide electrocatalytic conversion device for catalytic conversion to generate The steps of the carbon-based chemicals include: Passing the separated carbon dioxide into the carbon dioxide one-step electrocatalytic conversion unit, and passing water into the carbon dioxide one-step electrocatalytic conversion unit, so that the carbon monoxide and water are electrocatalytically converted in the carbon dioxide one-step electrocatalytic conversion unit Generates carbon-based chemicals.

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