Hydrogenation methanol production integrated system based on carbon dioxide capture

Abstract

The invention discloses a hydrogenation methanol production integrated system based on carbon dioxide capture, and relates to the technical field of methanol synthesis, the system comprises a carbon capture module, a coke-oven gas hydrogen production module, a methanol synthesis tower, a gas-liquid separation module and a methanol storage module, the coke-oven gas hydrogen production module is used for preparing hydrogen, the carbon capture module and the coke-oven gas hydrogen production module are connected with the methanol synthesis tower, the methanol synthesis tower comprises a gas mixing pipe, a heating device and an arc-shaped plate, the heating device is attached to the inner wall of the methanol synthesis tower, and the heating device provides proper reaction temperature for the methanol synthesis tower. A catalyst is attached to the surface of the arc-shaped plate, the arc-shaped plate is used for increasing the contact area of carbon dioxide and hydrogen, the methanol synthesis tower can provide an ideal synthesis environment for methanol synthesis, and methanol separated from gas generated by the methanol synthesis tower is stored in the methanol storage module through the gas-liquid separation module.

Description

Technical Field

[0001] The invention relates to the technical field of methanol synthesis, and in particular to an integrated system for producing methanol based on carbon dioxide capture and hydrogenation. Background Art

[0002] Methanol is a basic organic chemical raw material with a wide range of uses. Hundreds of chemical products can be produced from methanol. Carbon dioxide and hydrogen can produce methanol under the action of catalysts. Carbon dioxide is currently the main greenhouse gas. The process of effectively utilizing greenhouse gases carbon dioxide and hydrogen to produce widely used methanol is crucial. At present, carbon capture technology can effectively capture carbon dioxide in industrial exhaust gas and extract hydrogen from coke oven gas. However, how to increase the contact area between the catalyst and carbon dioxide and hydrogen and ensure that the temperature and pressure in the methanol synthesis tower are stably maintained within the preset temperature and pressure range are issues that have been studied in the carbon dioxide capture and hydrogenation process to produce methanol. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an integrated system for producing methanol based on carbon dioxide capture and hydrogenation, so as to increase the contact area between the catalyst and carbon dioxide and hydrogen and ensure that the temperature and pressure in the methanol synthesis tower are stably placed within a preset temperature and pressure range.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: an integrated system for producing methanol based on carbon dioxide capture and hydrogenation, comprising:

[0005] A carbon capture module, wherein the carbon capture module directly captures carbon dioxide from industrial tail gas through an adsorbent or absorbent, and a carbon dioxide storage module is installed at the output end of the carbon capture module, wherein the carbon dioxide storage module is used to store carbon dioxide;

[0006] A coke oven gas hydrogen production module, wherein the coke oven gas hydrogen production module is capable of separating hydrogen and methane from coke oven gas, a hydrogen storage module is installed at the hydrogen output end of the coke oven gas hydrogen production module, and a methane processing module is installed at the methane output end of the coke oven gas hydrogen production module;

[0007] A methanol synthesis tower, the methanol synthesis tower comprises a gas mixing tube and an arc plate, the carbon dioxide and hydrogen are fully fused through the gas mixing tube, the gas mixing tube is connected to the input end of the methanol synthesis tower in a spiral shape, four layers of arc plates are sequentially installed from bottom to top on one side of the output end of the gas mixing tube, the arc plates are bent toward the output end of the gas mixing tube, a catalyst is attached to the surface of the arc plate, there are gaps between the two ends of the first and third layers of the arc plates and the inner wall of the methanol synthesis tower, the two ends of the second and fourth layers of the arc plates are connected to the inner wall of the methanol synthesis tower and there is a gas channel in the middle, the carbon dioxide and hydrogen generate gaseous methanol and water vapor under the reaction of the catalyst, the gaseous methanol and the water vapor flow out from the gas channel, the arc plate is used to increase the contact area and reaction time of carbon dioxide, hydrogen and the catalyst, the carbon dioxide and hydrogen generate gaseous methanol and water vapor under the reaction of the catalyst, the gaseous methanol and the water vapor flow out from the gas channel;

[0008] A methanol storage module is connected to the output end of the methanol synthesis tower, and is used to receive and store methanol.

[0009] Preferably, a carbon dioxide output channel is installed at the output end of the carbon dioxide storage module, a hydrogen output channel is installed at the output end of the hydrogen storage module, a first heating tube is installed between the carbon dioxide output channel and the hydrogen output channel, and second heating tubes are installed on both sides of the gas mixing tube. The first heating tube and the second heating tube are used to preheat carbon dioxide and hydrogen so that carbon dioxide and hydrogen enter the methanol synthesis tower at a preset temperature to avoid insufficient reaction of carbon dioxide and hydrogen due to insufficient temperature.

[0010] Preferably, a gas flow valve is installed at the connection between the carbon dioxide output channel, the hydrogen output channel and the gas mixing tube, the gas flow valve is used to control the amount of gas passing through, the gas flow valve is used to control the carbon dioxide and hydrogen to enter the gas mixing tube in a ratio of 1:3, a gas pressure sensor is installed in the methanol synthesis tower, and a gas pressure receiver is installed at one end of the gas flow valve. When the pressure in the methanol synthesis tower is less than a preset value, the gas flow valve increases the speed at which carbon dioxide and hydrogen enter the methanol synthesis tower. When the pressure in the methanol synthesis tower is greater than the preset value, the gas flow valve reduces the speed at which carbon dioxide and hydrogen enter the methanol synthesis tower, thereby controlling the pressure in the methanol synthesis tower to be below the preset pressure.

[0011] Preferably, a third heating tube is installed on the inner wall of the methanol synthesis tower, and a first temperature sensor is installed on the inner wall of the methanol synthesis tower, the first temperature sensor is connected to the third heating tube, the first temperature sensor is used to sense the temperature of the methanol synthesis tower and control the third heating tube to place the methanol synthesis tower within a preset temperature range, and an insulation board is attached to the outer wall of the methanol synthesis tower.

[0012] Preferably, a gas-liquid separation module is installed between the gas channel and the methanol storage module, and the gas-liquid separation module includes a cooling pipe, a cooling tank, a cooling channel, a gas pipe, and a liquid pipe. One end of the cooling channel is connected to the gas channel, and the other end of the cooling channel is inclined downward and connected to the gas pipe and liquid pipe input ends. The gas pipe output end extends upward, and gas flows out from the gas pipe. The gas pipe output end is connected to the methanol storage module, and the liquid pipe output end extends downward, and liquid flows out from the liquid pipe.

[0013] Preferably, a cooling pipe is installed on the outside of the cooling channel, a coolant input pipe and a coolant return pipe are installed between the cooling tank and the cooling pipe, the cooling tank is filled with coolant, a first check valve is installed on one side of the coolant input pipe, a first water pump is installed on one side of the coolant return pipe, a second temperature sensor is installed on one side of the output end of the cooling channel, and a second temperature receiver is installed on one side of the first water pump. The first check valve is opened, and the first check valve is used to prevent the coolant from flowing back to the cooling tank. The coolant enters the cooling pipe, and the cooling pipe cools the gas in the cooling channel. When the second temperature sensor senses a temperature higher than 90 degrees or lower than 70 degrees, the second temperature receiver controls the output power of the first water pump, increases or decreases the flow rate of the coolant in the cooling pipe, and controls the temperature in the cooling channel, ensuring that the temperature at the output end of the cooling channel is controlled within the range of 70 to 90 degrees, so that methanol is gasified and enters the gas pipe, and water vapor is liquefied and discharged from the liquid pipe.

[0014] Preferably, the methanol storage module includes a methanol storage tank and a liquid storage tank. A thermostatic tube is attached to the inner wall of the methanol storage tank, and the thermostatic tube is connected to the liquid storage tank. The liquid storage tank stores liquid at 20°C. A liquid inlet pipe and a liquid return pipe are arranged between the liquid storage tank and the thermostatic tube. A second check valve is arranged on one side of the liquid inlet pipe, and the second check valve is used to prevent the liquid from flowing back to the liquid storage tank. A second water pump is installed on one side of the liquid return pipe. A third temperature sensor is installed in the methanol storage tank, and a third temperature receiver is installed on one side of the second water pump. The third temperature sensor receives the temperature of the methanol in the methanol storage tower and transmits the temperature result to the third temperature receiver. The second water pump drives the liquid to flow between the liquid storage tank and the thermostatic tube to liquefy the gaseous methanol and store it in the methanol storage tank.

[0015] Preferably, a temperature-pressure swing adsorption processing component is installed in the coke oven gas hydrogen production module, and the temperature-pressure swing adsorption processing component is used to separate the hydrogen in the coke oven gas and input the remaining waste gas into the carbon capture module for extracting carbon dioxide in the waste gas.

[0016] Preferably, the methane processing module reacts methane with water to generate carbon dioxide and hydrogen, the carbon dioxide generated by the methane processing module is stored in the carbon dioxide storage module, and the hydrogen generated by the methane processing module is stored in the hydrogen storage module.

[0017] Beneficial effects: The present invention provides an integrated system for producing methanol based on carbon dioxide capture and hydrogenation, wherein the methanol synthesis tower can be preheated before carbon dioxide and oxygen enter the methanol synthesis tower, a heating device is installed in the methanol synthesis tower to set the temperature in the methanol synthesis tower at an ideal reaction temperature, the gas flow valve can control the pressure in the methanol synthesis tower, and allow carbon dioxide and oxygen to enter the methanol synthesis tower in a ratio of 1:3, the four-layer arc plate in the methanol synthesis tower can increase the contact area and contact time of carbon dioxide, oxygen and the catalyst, so that carbon dioxide and oxygen can fully react, the cooling pipe can separate the generated gaseous methanol and water into gaseous methanol and liquid water, and the gaseous methanol is converted into liquid methanol for storage through the methanol storage module. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0019] In the attached picture:

[0020] Figure 1 This is a flow chart of the integrated system for producing methanol by capturing and hydrogenating carbon dioxide according to the present invention;

[0021] Figure 2 This is an overall schematic diagram of the integrated system for producing methanol by capturing and hydrogenating carbon dioxide according to the present invention;

[0022] Figure 3 It is a schematic diagram of a methanol synthesis tower of the present invention;

[0023] Figure 4 It is a schematic diagram of the gas-liquid separation module and the methanol storage module of the present invention.

[0024] Numbers in the figure: 1, carbon dioxide output channel; 2, hydrogen output channel; 3, gas mixing pipe; 4, methanol synthesis tower; 5, cooling pipe; 6, cooling tank; 7, methanol storage tank; 8, liquid storage tank; 9, cooling channel; 10, gas pressure receiver; 11, gas pressure sensor; 12, first temperature sensor; 13, insulation board; 14, first heating pipe; 15, gas flow valve; 16, second heating pipe; 17, third heating pipe; 18, arc plate; 19, catalyst; 20, gas channel; 21, second temperature sensor; 22, second temperature receiver; 23, first water pump; 24, third temperature sensor; 25, coolant input pipe; 26, first check valve; 27, liquid pipe; 28, gas pipe; 29, third temperature receiver; 30, second water pump; 31, second check valve; 32, constant temperature pipe; 33, coolant reflux pipe; 34, liquid inlet pipe; 35, liquid return pipe. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following text is only used to describe an implementation method of the integrated system for producing methanol based on carbon dioxide capture and hydrogenation of the present invention, and does not strictly limit the scope of protection of the specific request of the present invention.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] Example: Figure 1-Figure 4 As shown, an integrated system for producing methanol based on carbon dioxide capture and hydrogenation includes:

[0028] A carbon capture module, wherein the carbon capture module directly captures carbon dioxide from industrial tail gas through an adsorbent or absorbent, and a carbon dioxide storage module is installed at the output end of the carbon capture module, wherein the carbon dioxide storage module is used to store carbon dioxide;

[0029] A coke oven gas hydrogen production module, wherein the coke oven gas hydrogen production module is capable of separating hydrogen and methane from coke oven gas, a hydrogen storage module is installed at the hydrogen output end of the coke oven gas hydrogen production module, and a methane processing module is installed at the methane output end of the coke oven gas hydrogen production module;

[0030] A methanol synthesis tower 4, wherein the methanol synthesis tower 4 comprises a gas mixing tube 3 and an arc plate 18, wherein the carbon dioxide and hydrogen are fully fused through the gas mixing tube 3, wherein the gas mixing tube 3 is spirally connected to the input end of the methanol synthesis tower 4, wherein four layers of arc plates 18 are sequentially installed from bottom to top on one side of the output end of the gas mixing tube 3, wherein the arc plates 18 are bent toward the outlet direction of the gas mixing tube 3, wherein a catalyst 19 is attached to the surface of the arc plates 18, wherein gaps exist between the two ends of the first and third layers of the arc plates 18 and the inner wall of the methanol synthesis tower 4, wherein the two ends of the second and fourth layers of the arc plates 18 are connected to the inner wall of the methanol synthesis tower 4 and a gas channel 20 exists in the middle of the second and fourth layers of the arc plates 18, wherein the arc plates 18 are used to increase the contact area and reaction time of the carbon dioxide, hydrogen and the catalyst 19, wherein the carbon dioxide and hydrogen generate gaseous methanol and water vapor under the reaction of the catalyst 19, and the gaseous methanol and the water vapor flow out from the gas channel 20 of the fourth layer of the arc plate 18;

[0031] A methanol storage module is connected to the output end of the methanol synthesis tower 4, and is used to receive and store methanol.

[0032] In an embodiment, a temperature-pressure swing adsorption processing component is installed in the coke oven gas hydrogen production module, and the temperature-pressure swing adsorption processing component is used to separate the hydrogen in the coke oven gas and input the remaining waste gas into the carbon capture module for extracting carbon dioxide in the waste gas.

[0033] In an embodiment, the methane processing module reacts methane with water to generate carbon dioxide and hydrogen, the carbon dioxide generated by the methane processing module is stored in the carbon dioxide storage module, and the hydrogen generated by the methane processing module is stored in the hydrogen storage module.

[0034] In an embodiment, a carbon dioxide output channel 1 is installed at the output end of the carbon dioxide storage module, a hydrogen output channel 2 is installed at the output end of the hydrogen storage module, a first heating tube 14 is installed between the carbon dioxide output channel 1 and the hydrogen output channel 2, and second heating tubes 16 are installed on both sides of the gas mixing tube 3. The first heating tube 14 and the second heating tube 16 are used to preheat carbon dioxide and hydrogen so that carbon dioxide and hydrogen enter the methanol synthesis tower 4 at a preset temperature to avoid insufficient reaction of carbon dioxide and hydrogen due to insufficient temperature.

[0035] In an embodiment, a gas flow valve 15 is installed at the connection between the carbon dioxide output channel 1, the hydrogen output channel 2 and the gas mixing tube 3. The gas flow valve 15 is used to control the amount of gas passing through. The gas flow valve 15 is used to control the carbon dioxide and hydrogen to enter the gas mixing tube 3 in a ratio of 1:3. A gas pressure sensor 11 is installed in the methanol synthesis tower 4. A gas pressure receiver 10 is installed at one end of the gas flow valve 15. When the pressure in the methanol synthesis tower 4 is less than a preset value, the gas flow valve 15 increases the speed at which carbon dioxide and hydrogen enter the methanol synthesis tower 4. When the pressure in the methanol synthesis tower 4 is greater than the preset value, the gas flow valve 15 reduces the speed at which carbon dioxide and hydrogen enter the methanol synthesis tower 4, thereby controlling the pressure in the methanol synthesis tower 4 to be below the preset pressure.

[0036] In an embodiment, a third heating tube 17 is installed on the inner wall of the methanol synthesis tower 4, and a first temperature sensor 12 is installed on the inner wall of the methanol synthesis tower 4. The first temperature sensor 12 is connected to the third heating tube 17. The first temperature sensor 12 is used to sense the temperature of the methanol synthesis tower 4 and control the third heating tube 17 to place the methanol synthesis tower 4 in a preset temperature range of 300 degrees. The outer wall of the methanol synthesis tower 4 is attached with a heat insulation board 13.

[0037] In an embodiment, a gas-liquid separation module is installed between the gas channel 20 of the fourth layer of curved plate 18 and the methanol storage module, and the gas-liquid separation module includes a cooling pipe 5, a cooling tank 6, a cooling channel 9, a gas pipe 28, and a liquid pipe 27. One end of the cooling channel 9 is connected to the gas channel 20 of the fourth layer of curved plate 18, and the other end of the cooling channel 9 is inclined downward and connected to the input ends of the gas pipe 28 and the liquid pipe 27. The output end of the gas pipe 28 extends upward, and the gas flows out from the gas pipe 28. The output end of the gas pipe 28 is connected to the methanol storage module, and the output end of the liquid pipe 27 extends downward, and the liquid flows out from the liquid pipe 27.

[0038] In the embodiment, a cooling pipe 5 is installed outside the cooling channel 9, a coolant input pipe 25 and a coolant return pipe 33 are installed between the cooling tank 6 and the cooling pipe 5, the cooling tank 6 is filled with coolant, a first check valve 26 is installed on one side of the coolant input pipe 25, a first water pump 23 is installed on one side of the coolant return pipe 33, a second temperature sensor 21 is installed on one side of the output end of the cooling channel 9, a second temperature receiver 22 is installed on one side of the first water pump 23, and the first check valve 26 is opened. The first check valve 26 is used to prevent the cooling The liquid flows back into the cooling tank 6, and the coolant enters the cooling pipe 5, and the cooling pipe 5 cools the gas in the cooling channel 9. When the second temperature sensor 21 senses a temperature higher than 90 degrees or lower than 70 degrees, the second temperature receiver 22 controls the output power of the first water pump 23, increases or decreases the flow rate of the coolant in the cooling pipe 5 to control the temperature in the cooling channel 9, and ensures that the temperature at the output end of the cooling channel 9 is controlled within the range of 70 to 90 degrees, so that the methanol is gasified and enters the gas pipe 28, and the water vapor is liquefied and discharged from the liquid pipe 27.

[0039] In an embodiment, the methanol storage module includes a methanol storage tank 7 and a liquid storage tank 8. A constant temperature pipe 32 is attached to the inner wall of the methanol storage tank 7. The constant temperature pipe 32 is connected to the liquid storage tank 8. The liquid storage tank 8 stores liquid at 20°C. A liquid inlet pipe 34 and a liquid return pipe 35 are arranged between the liquid storage tank 8 and the constant temperature pipe 32. A second check valve 31 is arranged on one side of the liquid inlet pipe 34. The second check valve 31 is used to prevent the liquid from flowing back to the liquid storage tank 8. A second water pump 30 is installed on one side of the liquid return pipe 35. A third temperature sensor 24 is installed in the methanol storage tank. A third temperature receiver 29 is installed on one side of the second water pump 30. The third temperature sensor 24 receives the temperature of the methanol in the methanol storage tower and transmits the temperature result to the third temperature receiver 29. The second water pump 30 drives the liquid to flow between the liquid storage tank 8 and the constant temperature pipe 32 to liquefy the gaseous methanol and store it in the methanol storage tank 7.

[0040] Finally, it should be noted that the above is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated system for producing methanol based on carbon dioxide capture and hydrogenation, characterized by: include: A carbon capture module, wherein the carbon capture module directly captures carbon dioxide from industrial tail gas through an adsorbent or absorbent, and a carbon dioxide storage module is installed at the output end of the carbon capture module; A coke oven gas hydrogen production module, wherein the coke oven gas hydrogen production module is capable of separating hydrogen and methane from coke oven gas, a hydrogen storage module is installed at the hydrogen output end of the coke oven gas hydrogen production module, and a methane processing module is installed at the methane output end of the coke oven gas hydrogen production module; A methanol synthesis tower, the methanol synthesis tower comprises a gas mixing tube and an arc plate, the carbon dioxide and hydrogen are fully fused through the gas mixing tube, the gas mixing tube is connected to the input end of the methanol synthesis tower in a spiral shape, four layers of arc plates are sequentially installed from bottom to top on one side of the output end of the gas mixing tube, the arc plates are bent toward the output end of the gas mixing tube, catalysts are attached to the surface of the arc plates, gaps exist between the two ends of the first and third layers of the arc plates and the inner wall of the methanol synthesis tower, the two ends of the second and fourth layers of the arc plates are connected to the inner wall of the methanol synthesis tower and a gas channel exists in the middle, the carbon dioxide and hydrogen generate gaseous methanol and water vapor under the reaction of the catalyst, and the gaseous methanol and water vapor flow out from the gas channel of the fourth layer of the arc plate; A methanol storage module is connected to the output end of the methanol synthesis tower, and is used to receive and store methanol.

2. The integrated system for producing methanol based on carbon dioxide capture and hydrogenation according to claim 1, characterized in that: A carbon dioxide output channel is installed at the output end of the carbon dioxide storage module, and a hydrogen output channel is installed at the output end of the hydrogen storage module. A first heating tube is installed between the carbon dioxide output channel and the hydrogen output channel, and second heating tubes are installed on both sides of the gas mixing tube. The first heating tube and the second heating tube are used to preheat carbon dioxide and hydrogen so that carbon dioxide and hydrogen reach a preset temperature.

3. The integrated system for producing methanol based on carbon dioxide capture and hydrogenation according to claim 1 is characterized in that: A gas flow valve is installed at the connection between the carbon dioxide output channel, the hydrogen output channel and the gas mixing pipe. The gas flow valve is used to control the amount of gas passing through. The gas flow valve is used to control the carbon dioxide and hydrogen to enter the gas mixing pipe in a ratio of 1:

3. A gas pressure sensor is installed in the methanol synthesis tower. A gas pressure receiver is installed at one end of the gas flow valve. When the pressure in the methanol synthesis tower is less than a preset value, the gas flow valve increases the speed at which carbon dioxide and hydrogen enter the methanol synthesis tower. When the pressure in the methanol synthesis tower is greater than the preset value, the gas flow valve reduces the speed at which carbon dioxide and hydrogen enter the methanol synthesis tower.

4. The integrated system for producing methanol based on carbon dioxide capture and hydrogenation according to claim 1, characterized in that: A third heating tube is installed on the inner wall of the methanol synthesis tower. A first temperature sensor is installed on the inner wall of the methanol synthesis tower. The first temperature sensor is connected to the third heating tube. The first temperature sensor is used to sense the temperature of the methanol synthesis tower and control the third heating tube to place the methanol synthesis tower within a preset temperature range. An insulation board is attached to the outer wall of the methanol synthesis tower.

5. The integrated system for producing methanol based on carbon dioxide capture and hydrogenation according to claim 1, characterized in that: A gas-liquid separation module is installed between the gas channel of the fourth layer of curved plate and the methanol storage module. The gas-liquid separation module includes a cooling pipe, a cooling tank, a cooling channel, a gas pipe, and a liquid pipe. One end of the cooling channel is connected to the gas channel of the fourth layer of curved plate, and the other end of the cooling channel is inclined downward and connected to the gas pipe and liquid pipe input ends. The gas pipe output end extends upward, and the liquid pipe output end extends downward. The gas pipe output end is connected to the methanol storage module.

6. The integrated system for producing methanol based on carbon dioxide capture and hydrogenation according to claim 5, characterized in that: A cooling pipe is installed outside the cooling channel, a coolant input pipe and a coolant return pipe are installed between the cooling tank and the cooling pipe, the cooling tank is filled with coolant, a first check valve is installed on one side of the coolant input pipe, a first water pump is installed on one side of the coolant return pipe, a second temperature sensor is installed on one side of the output end of the cooling channel, and a second temperature receiver is installed on one side of the first water pump. The first check valve is opened, and the first check valve is used to prevent the coolant from flowing back to the cooling tank. The coolant enters the cooling pipe, and the cooling pipe cools the gas in the cooling channel. When the second temperature sensor senses that the temperature in the cooling channel is higher than 90 degrees or lower than 70 degrees, the second temperature receiver controls the output power of the first water pump, increases or decreases the flow rate of the coolant in the cooling pipe to control the temperature in the cooling channel, and ensures that the temperature at the output end of the cooling channel is controlled within the range of 70 degrees to 90 degrees, so that methanol is gasified and enters the gas pipe, and water vapor is liquefied and discharged from the liquid pipe.

7. The integrated system for producing methanol based on carbon dioxide capture and hydrogenation according to claim 1, characterized in that: The methanol storage module includes a methanol storage tank and a liquid storage tank. A constant temperature pipe is attached to the inner wall of the methanol storage tank, and the constant temperature pipe is connected to the liquid storage tank. The liquid storage tank stores liquid at 20°C. A liquid inlet pipe and a liquid return pipe are arranged between the liquid storage tank and the constant temperature pipe. A second check valve is arranged on one side of the liquid inlet pipe, and the second check valve is used to prevent the liquid from flowing back to the liquid storage tank. A second water pump is installed on one side of the liquid return pipe. A third temperature sensor is installed in the methanol storage tank, and a third temperature receiver is installed on one side of the second water pump. The third temperature sensor receives the temperature of the methanol in the methanol storage tower and transmits the temperature result to the third temperature receiver. The second water pump drives the liquid to flow between the liquid storage tank and the constant temperature pipe to liquefy the gaseous methanol and store it in the methanol storage tank.

8. The integrated system for producing methanol based on carbon dioxide capture and hydrogenation according to claim 1, characterized in that: A temperature-pressure swing adsorption processing component is installed in the coke oven gas hydrogen production module, and the temperature-pressure swing adsorption processing component is used to separate the hydrogen in the coke oven gas and input the remaining waste gas into the carbon capture module for extracting carbon dioxide in the waste gas.

9. The integrated system for producing methanol based on carbon dioxide capture and hydrogenation according to claim 1, characterized in that: The methane processing module reacts methane with water to generate carbon dioxide and hydrogen, stores the carbon dioxide generated by the methane processing module in the carbon dioxide storage module, and stores the hydrogen generated by the methane processing module in the hydrogen storage module.

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