Flue gas carbon dioxide capture and atmospheric hydrogenation combined methanol preparation device

Abstract

The utility model discloses a device for preparing methanol by combining flue gas carbon dioxide capture and normal-pressure hydrogenation, and relates to the technical field of flue gas carbon dioxide adsorption regeneration and utilization. The solar cell panel, the temperature controller, the storage battery and the plasma generator power supply are fixed at the bottom of the iron stand, the carbon dioxide adsorption tube and the catalytic reaction generator are fixed on the iron stand and are connected through a hose, a perforated plate is fixed in the middle of each of the carbon dioxide adsorption tube and the catalytic reaction generator, and flue gas enters the carbon dioxide adsorption tube from a gas inlet and enters the carbon dioxide adsorption tube; carbon dioxide in the flue gas is adsorbed, is separated from the adsorbent when the heating sheet works, enters the catalytic reaction generator through the hose, and reacts with hydrogen under the catalytic action of the plasma generator and the catalyst to generate methanol. The prepared material carbon-based loaded Cu / ZnO realizes adsorption and catalysis dual functions, a plasma generator drives carbon dioxide hydrogenation to generate methanol at normal temperature and normal pressure, no waste gas polluting the environment is generated in the whole process, and the method has great popularization significance.

Description

Technical Field

[0001] This utility model belongs to the field of flue gas carbon dioxide adsorption, regeneration and utilization technology, specifically relating to a flue gas carbon dioxide capture combined with atmospheric pressure hydrogenation to methanol device. Background Technology

[0002] Carbon dioxide is a greenhouse gas that absorbs infrared radiation from the Earth, causing an increase in near-surface atmospheric temperature and thus contributing to rising global temperatures. To address global warming and promote a green and low-carbon transition, China has proposed a "dual-carbon" goal of "carbon peaking" and "carbon neutrality," aiming to actively address the climate crisis and achieve sustainable development through reducing greenhouse gas emissions, optimizing the energy structure, and utilizing energy interconnection technologies. As a crucial technological pathway to achieving this "dual-carbon" goal, carbon capture, utilization, and storage (CCUS) technology has received widespread attention. The capture and efficient utilization of carbon dioxide is the core of CCUS technology. This technology not only effectively reduces carbon dioxide emissions from industrial processes but also converts captured carbon dioxide into high-value-added products, achieving resource recycling and thus providing vital support for achieving the "dual-carbon" goal.

[0003] However, existing carbon capture and utilization technologies still have many limitations. First, existing carbon capture technologies mainly include physical absorption, chemical adsorption, and membrane separation methods. However, in practice, these technologies can only capture carbon dioxide, while the subsequent utilization process often requires other equipment and energy input. This process not only increases energy consumption and costs significantly, but also leads to a severe disconnect between the adsorption and utilization of carbon dioxide, reducing overall efficiency.

[0004] Methanol, as an important basic chemical raw material, is widely used in the manufacture of synthetic materials, organic solvents, and pharmaceuticals and pesticides. As a low-carbon fuel, it is widely used in vehicles, ships, construction machinery, oilfield auxiliary power generation, and methanol heat pumps. Currently, my country's methanol production process is mainly based on coal-based methanol production, which is energy-intensive and environmentally unfriendly. To reduce dependence on coal resources and lower carbon emissions, traditional carbon dioxide hydrogenation to methanol technology is gaining attention. This technology converts industrially emitted carbon dioxide and hydrogen into methanol under the action of a catalyst, achieving the recycling of carbon resources. However, traditional carbon dioxide hydrogenation to methanol technology usually requires high temperature and high pressure conditions (5-10 MPa), which not only places extremely high demands on equipment but also leads to high energy consumption and operating costs.

[0005] Unlike the high temperature and high pressure required for traditional methanol production, low-temperature plasma catalysis technology can achieve the green synthesis of methanol from carbon dioxide at room temperature and pressure through gas-phase active free radical collisions and surface catalytic reaction processes. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a flue gas carbon dioxide capture combined with atmospheric pressure hydrogenation to methanol device, which is small in size, low in energy consumption, and easy to realize carbon dioxide adsorption and regeneration, so that carbon dioxide and hydrogen can generate methanol, a high-value-added product, at room temperature and pressure, which has the significance of carbon reduction.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A flue gas carbon dioxide capture and atmospheric pressure hydrogenation methanol production unit includes an iron frame, a carbon dioxide adsorption tube, a catalytic reactor, a plasma generator power supply, a battery, a temperature controller, a heating element, a perforated plate, and a flexible hose. The carbon dioxide adsorption tube and the catalytic reactor are fixed to the iron frame and connected by the flexible hose. A perforated plate is fixed between the carbon dioxide adsorption tube and the catalytic reactor. Flue gas enters the carbon dioxide adsorption tube through the gas inlet, and the carbon dioxide in the flue gas is adsorbed by the perforated plate in the carbon dioxide adsorption tube. The heating element is wound around the upper half of the carbon dioxide adsorption tube. The temperature controller, battery, and plasma generator power supply are all fixed to the bottom of the iron frame. The battery drives the temperature controller and the plasma generator power supply. The heating element is connected to the temperature controller. A copper wire is inserted into the catalytic reactor through a three-way valve, and another copper wire is evenly wound around the outside of the catalytic reactor. The two copper wires are respectively connected to the two wires of the plasma generator power supply, forming a complete catalytic reactor.

[0009] When the heating element is working, carbon dioxide in the flue gas is separated from the porous plate under the action of the heating element and enters the catalytic reactor through the hose. Under the catalytic action of the catalytic reactor and the catalyst, it reacts with hydrogen to produce methanol, and the methanol flows out from the outlet of the carbon dioxide adsorption tube.

[0010] Preferably, the porous plate in the carbon dioxide adsorption tube is loaded with a carbon-based adsorbent, Cu / ZnO, capable of adsorbing carbon dioxide.

[0011] Preferably, the porous plate in the catalytic reactor is loaded with a particulate catalyst, which is a carbon-based catalyst supported on Cu / ZnO.

[0012] Preferably, the carbon dioxide adsorption tube and the hose, as well as the catalytic reactor and the hose, are connected by a three-way valve, which switches the gas flow direction.

[0013] Preferably, the temperature controller and the plasma generator power supply are connected in parallel to the battery, and the battery is connected to the solar panel.

[0014] Preferably, a switch is installed at the connection between the battery and the thermostat to control the operation of the thermostat.

[0015] Preferably, a switch is installed at the connection between the plasma generator power supply and the catalytic reaction generator, and the switch is controlled by a knob.

[0016] Preferably, a catalytic reactor, in conjunction with a catalyst, drives the hydrogenation of carbon dioxide to produce methanol at room temperature and pressure.

[0017] The beneficial effects of adopting the above technical solution are as follows: This utility model has a simple structure, and the prepared carbon-based supported Cu / ZnO material achieves dual functions of adsorption and catalysis. It can be used as an adsorbent to adsorb carbon dioxide and as a catalyst to catalyze the hydrogenation reaction of carbon dioxide. Carbon dioxide is adsorbed using the adsorbent, and the obtained carbon dioxide is passed into a catalytic reactor. Under the synergistic catalytic action of a plasma generator, it reacts with hydrogen at room temperature and pressure to produce methanol. The entire adsorption / regeneration process does not produce polluting waste gas, and this experiment uses solar panels, requiring no additional electricity consumption, making it energy-saving and environmentally friendly, and of great significance for widespread application. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] The flue gas carbon dioxide capture and combined atmospheric pressure hydrogenation to methanol unit is a technology that utilizes solid adsorbents to adsorb carbon dioxide, followed by carbon dioxide regeneration, and plasma and catalyst-driven hydrogenation to produce methanol at ambient temperature and pressure. This technology is suitable for capturing and regenerating low-concentration, low-activity carbon dioxide and producing methanol at ambient temperature and pressure. It can concentrate low-concentration carbon dioxide in flue gas into high-concentration, high-activity carbon dioxide, which is then hydrogenated to methanol under ambient temperature and pressure conditions. This facilitates the industrial conversion of excess carbon dioxide into high-value-added chemicals and energy fuels, achieving mitigation of the greenhouse effect and sustainable use of natural resources. Furthermore, the conversion of solar energy into electricity for battery power generation by solar panels under sunlight and the efficient activation of carbon dioxide by plasma both demonstrate excellent energy-saving effects.

[0021] A flue gas carbon dioxide capture and atmospheric pressure hydrogenation methanol production unit includes an iron frame, a carbon dioxide adsorption tube 2, a catalytic reactor 3, a plasma generator power supply 4, a battery 5, a temperature controller 6, a heating element 8, a perforated plate 9, and a flexible hose 10. The carbon dioxide adsorption tube 2 and the catalytic reactor 3 are fixed on the iron frame and connected by the flexible hose 10. A perforated plate 9 is fixed between the carbon dioxide adsorption tube 2 and the catalytic reactor 3. Flue gas enters the carbon dioxide adsorption tube 2 through the gas inlet, and the carbon dioxide in the flue gas is adsorbed by the carbon dioxide adsorption tube 2. The porous plate 9 adsorbs carbon dioxide; the heating element 8 is wound around the upper half of the carbon dioxide adsorption tube 2; the temperature controller 6, the battery 5, and the plasma generator power supply 4 are all fixed at the bottom of the iron frame, and the battery 5 drives the temperature controller 6 and the plasma generator power supply 4 to work; the heating element 8 is connected to the temperature controller 6; one copper wire 12 is inserted into the catalytic reaction generator 3 through the three-way valve 11, and another copper wire 12 is evenly wound around the outside of the catalytic reaction generator 3. The two copper wires 12 are respectively connected to the two wires of the plasma generator power supply 4 to form a complete catalytic reaction generator 3.

[0022] When the heating element 8 is working, carbon dioxide in the flue gas is separated from the porous plate 9 under the action of the heating element 8 and enters the catalytic reaction generator 3 through the hose 10. Under the catalytic action of the catalytic reaction generator 3 and the catalyst, it reacts with hydrogen to produce methanol. Methanol 13 flows out from the outlet of the carbon dioxide adsorption tube 2.

[0023] Preferably, the porous plate 9 in the carbon dioxide adsorption tube 2 is loaded with a carbon-based adsorbent Cu / ZnO that can adsorb carbon dioxide.

[0024] Preferably, the porous plate 9 in the catalytic reaction generator 3 is loaded with a particulate catalyst, which is a carbon-based catalyst supported on Cu / ZnO.

[0025] Preferably, the carbon dioxide adsorption tube 2 and the hose 10, as well as the catalytic reaction generator 3 and the hose 10, are connected by a three-way valve 11, which switches the gas flow direction.

[0026] Preferably, the temperature controller 6 and the plasma generator power supply 4 are connected in parallel to the storage battery 5 and powered by the storage battery 5, which is connected to the solar panel 7.

[0027] Preferably, a switch 1 is installed at the connection between the battery 5 and the thermostat 6 to control the operation of the thermostat 6.

[0028] Preferably, a switch 1 is installed at the connection between the plasma generator power supply 4 and the catalytic reaction generator 3, and the switch 1 is controlled by a knob 14.

[0029] Preferably, the catalytic reactor 3, in conjunction with the catalyst, drives the hydrogenation of carbon dioxide to produce methanol 13 at room temperature and pressure.

[0030] like Figure 1 As shown, the capture, adsorption, and regeneration device includes a thermal regeneration patch, a solar panel, a battery, an adsorbent, a porous plate, an adsorption tube, a three-way valve, a switch, and a temperature controller. The porous plate is placed inside the carbon dioxide adsorption tube, with the carbon dioxide adsorbent loaded on the plate. The thermal regeneration patch is wound around the carbon dioxide adsorption tube, positioned above the adsorbent. One end of the battery is connected to the temperature controller to supply power, and the other end is connected to the solar panel to convert solar energy into electrical energy stored in the battery. The adjustable three-way valve is connected to a connecting pipe at the end of the adsorption tube.

[0031] The plasma-generating catalytic device includes a plasma reactor power supply, a three-way valve, a catalytic reactor generator, a copper coil, a perforated plate, and a catalyst. High-concentration carbon dioxide enters the catalytic reactor through a connecting pipe and the three-way valve. The perforated plate is located inside the catalytic reactor and contains a carbon-based catalyst (Cu / ZnO). The copper wire is divided into two parts: a straight copper wire is inserted into the catalytic reactor through the three-way valve, and the other copper coil is evenly wound around the outside of the catalytic reactor. Both copper wires are connected to the two wires of the plasma generator power supply, forming a complete plasma generator. By enhancing the activity of the plasma and the catalytic effect of the catalyst, the hydrogenation of carbon dioxide to methanol can be achieved under ambient temperature and pressure conditions.

[0032] During the collection and preparation process, flue gas containing carbon dioxide (concentration between 10% and 30%) is collected from coal-fired power plants or industrial boilers. As the gas enters from the top of the adsorption tube, the carbon dioxide adsorbent inside the tube adsorbs the carbon dioxide, rapidly capturing it from the flue gas. As the adsorption process proceeds, solar panels convert solar energy into electrical energy under sunlight and store it in a battery. When the adsorbent reaches adsorption saturation, the battery powers the thermal regeneration patch, and a temperature controller adjusts the temperature of the thermal regeneration patch to a suitable range. Under the action of the thermal regeneration patch, carbon dioxide desorbs and is released from the adsorbent. The desorbed carbon dioxide enters the next processing stage, while the adsorbent regains its adsorption capacity and can be used again for carbon dioxide capture. The desorbed carbon dioxide enters the catalytic reactor through the three-way valve on the right. A copper coil surrounds the outside of the catalytic reactor. The copper coil stabilizes the plasma discharge, preventing fluctuations in treatment efficiency caused by unstable discharge; it also enhances the electric field strength, enabling the plasma generator to efficiently activate the carbon dioxide, altering its molecular structure and increasing its reactivity, creating favorable conditions for subsequent hydrogenation reactions. Treated carbon dioxide and hydrogen are reacted with a Cu / ZnO catalyst supported on a carbon-based catalyst in a catalytic reactor, where the hydrogenation reaction is carried out under ambient temperature and pressure conditions in conjunction with plasma. The heat generated from the reaction is used to preheat the feed gas entering the system, and then the product undergoes further processing such as cooling and separation to obtain the methanol product.

[0033] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A flue gas carbon dioxide capture combined atmospheric hydro-generating methanol device, characterized in that, The utility model relates to a kind of carbon dioxide absorption device, including iron stand, carbon dioxide absorption pipe (2), catalytic reaction generator (3), plasma generator power supply (4), battery (5), temperature controller (6), heating sheet (8), porous plate (9) and hose (10);The carbon dioxide absorption pipe (2) is fixed with catalytic reaction generator (3) on iron stand and is connected by hose (10);Carbon dioxide absorption pipe (2) and catalytic reaction generator (3) are fixed with one porous plate (9) in each middle, flue gas enters carbon dioxide absorption pipe (2) from the gas inlet of carbon dioxide absorption pipe (2), and the carbon dioxide in flue gas is absorbed by porous plate (9) in carbon dioxide absorption pipe (2);The heating sheet (8) is wound in the upper half of carbon dioxide absorption pipe (2);The temperature controller (6), battery (5), plasma generator power supply (4) are all fixed in the bottom of iron stand, and battery (5) drives temperature controller (6) and plasma generator power supply (4) to work;The heating sheet (8) is connected with temperature controller (6);One red copper wire (12) is inserted into catalytic reaction generator (3) by three-way valve (11), and another red copper wire (12) is evenly wound in the outside of catalytic reaction generator (3), and two red copper wires (12) are connected with two wires of plasma generator power supply (4) respectively.

2. The flue gas CO2 capture combined atmospheric hydro-generating methanol device according to claim 1, characterized in that, The porous plate (9) in the carbon dioxide absorption pipe (2) is loaded with carbon-based adsorbent loaded Cu / ZnO that can absorb carbon dioxide.

3. The flue gas CO2 capture combined atmospheric hydro-generating methanol device according to claim 1, characterized in that, The porous plate (9) in the catalytic reaction generator (3) is loaded with particle catalyst, and the particle catalyst is carbon-based catalyst loaded Cu / ZnO.

4. The flue gas CO2 capture combined normal pressure hydrogenation methanol production device according to claim 1, characterized in that, The carbon dioxide absorption pipe (2) and the hose (10) are connected by the three-way valve (11), and the catalytic reaction generator (3) and the hose (10) are connected by the three-way valve (11).

5. The combined flue gas CO2 capture and normal pressure methanol production plant by hydrogenation according to claim 1, characterized in that, The temperature controller (6) and the plasma generator power supply (4) are connected in parallel on the battery (5), and are powered by the battery (5), and the battery (5) is connected with solar panel (7).

6. The combined flue gas CO2 capture and normal pressure methanol production plant by hydrogenation according to claim 1, characterized in that, A switch (1) is installed at the connection between the battery (5) and the temperature controller (6) to control the work of the temperature controller (6).

7. The combined flue gas CO2 capture and normal pressure methanol production plant by hydrogenation according to claim 1, characterized in that, A switch (1) is installed at the connection between the plasma generator power supply (4) and the catalytic reaction generator (3), and the switch (1) is controlled by a knob (14).

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