An apparatus and method for capturing carbon dioxide produced from thermally activated coal gangue.

Abstract

This invention relates to the field of carbon dioxide capture technology and discloses a device for capturing carbon dioxide generated from thermally activated coal gangue. The device includes a frame, inside which a heat exchanger and a capture mechanism are respectively arranged. This device, through the arrangement of a primary absorption component and a secondary absorption component, can perform multiple capture processes on carbon dioxide in the calcination gas. By filling the tank with organic amine, the organic amine can contact the injected thermally activated calcination gas from the coal gangue, thus forming a carbon dioxide capture process. A circulation drive component circulates and pressurizes the organic amine material inside the tank, thereby improving the contact effect between the gas and the organic amine material, increasing the carbon dioxide capture effect, and solving the problems of organic amine easily undergoing oxidation and degradation, which reduces absorption performance and increases solution viscosity, hindering gas transport.

Description

Technical Field

[0001] This invention relates to the field of carbon dioxide capture technology, specifically to an apparatus and method for capturing carbon dioxide generated from thermally activated coal gangue. Background Technology

[0002] Coal gangue is a blackish-gray waste that is harder than coal and has a lower carbon content, which is associated with coal seams during the coal formation process. Large-scale disposal and resource utilization of coal gangue is an important aspect of solid waste utilization. Calcination and thermal activation is an effective means of activating coal gangue. After calcination, coal gangue can improve its grindability, refractoriness, and chemical stability, and significantly increase the levels of active silica and alumina. However, during thermal activation and calcination of coal gangue, the carbon in the gangue combines with oxygen in the air to form carbon dioxide. With the intensification of global warming, reducing emissions of greenhouse gases such as carbon dioxide and protecting the environment has become one of the core global issues that need to be addressed. Therefore, carbon dioxide capture equipment is generally required to achieve carbon dioxide emission reduction.

[0003] Most carbon dioxide capture devices use solution adsorption for treatment. Currently, the commonly used adsorbent is an alcohol amine solution. This chemical absorption method utilizes the chemical reaction between the adsorbent and CO2 to achieve the purpose of CO2 recovery, and it is one of the most effective methods for CO2 recovery. However, there are still some drawbacks in the actual adsorption and capture process. For example, amines are prone to oxidative degradation, which reduces their absorption performance. At the same time, it also increases the viscosity of the solution, which is not conducive to gas transport and affects the normal CO2 capture operation. Furthermore, it lacks the function of multiple captures, making it inconvenient to quickly process high concentrations of CO2, thereby reducing the effectiveness of the capture device. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a device for capturing carbon dioxide generated from thermally activated coal gangue. Through the arrangement of a primary absorption component and a secondary absorption component, carbon dioxide in the calcination gas can be captured multiple times. By filling the tank with organic amine, the organic amine can contact the injected thermally activated calcination gas from the coal gangue, thus achieving carbon dioxide capture. The circulation drive component allows for the circulation and pressurization of the organic amine material inside the tank, thereby improving the contact effect between the gas and the organic amine material and enhancing the carbon dioxide capture effect. Furthermore, this invention solves the problems of organic amine easily undergoing oxidative degradation, which reduces absorption performance and increases solution viscosity, hindering gas transport.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a device for capturing carbon dioxide generated from thermally activated coal gangue, comprising a frame, wherein a heat exchanger and a capture mechanism are respectively arranged inside the frame;

[0008] The collection mechanism includes a primary absorption component for absorbing carbon dioxide generated during the activation process via organic amines and a secondary absorption component for secondary absorption of carbon dioxide, and the primary absorption component and the secondary absorption component are connected by pipelines.

[0009] The primary absorption assembly includes a tank fixed to the bottom of the frame, the tank is filled with organic amine, and the outer surface of the tank is provided with a circulation drive for pressurizing and circulating the organic amine inside the tank and for agitating the absorbent material inside the secondary absorption assembly. The drive end of the circulation drive is detachably connected to the secondary absorption assembly.

[0010] The air inlet of the heat exchanger is connected to the exhaust port of the coal gangue calcination outside, the air outlet of the heat exchanger is connected to the bottom of the tank through an air injection pipe, and the heat conduction port of the heat exchanger is connected to the secondary absorption assembly through a heating pipe.

[0011] Preferably, a vent frame is fixedly connected to the inner surface of the tank, an exhaust pipe is fixedly connected to the top of the tank, and a carbon dioxide detector is installed on the exhaust pipe. An annular constriction block communicating with the inside of the exhaust pipe is fixedly connected to the top of the inner wall of the tank.

[0012] Preferably, the circulation drive includes a circulation cylinder fixed to the outer surface of the tank body by a bracket. The top and bottom of the circulation cylinder are respectively fixedly connected to an outlet pipe and a suction pipe. Both the outlet pipe and the suction pipe are equipped with one-way control valves. The outlet pipe is connected to a material replacement pipe through a No. 1 three-way valve. The outer surface of the tank body is equipped with a feeding port.

[0013] The piston plate is slidably connected to the inside of the circulation cylinder through a sealing sleeve, and the piston plate has several openings inside, each of which is equipped with a one-way valve plate. An electric telescopic rod is fixedly connected to the outer surface of the tank through a bracket, and the telescopic end of the electric telescopic rod is fixedly connected to the top of the piston plate through a drive shaft.

[0014] Preferably, the secondary absorption assembly includes an absorption cylinder fixed to the bottom of the frame by a bracket, with rotating shafts rotatably connected to both ends of the absorption cylinder, and a breathable cylinder with an opening at the top fixedly connected between the two rotating shafts, and protruding isolation blocks provided on both sides of the inner surface of the absorption cylinder.

[0015] The bottom of the absorption cylinder is fixedly connected to a guide frame, and a baffle is provided at the bottom of the guide frame. One end of the exhaust pipe is connected to the inside of the guide frame, and the exhaust pipe is connected to the No. 1 air outlet pipe through a No. 2 three-way valve.

[0016] The top of the absorption cylinder is fixedly connected to a material injection frame, and the top of the material injection frame is detachably fitted with a cover plate, on which a second air outlet pipe is installed.

[0017] Preferably, the vent is provided with a rotating component for driving the rotation of the two rotating shafts;

[0018] The rotating component includes gears fixed to the outer surfaces of two rotating shafts. A U-shaped sliding frame is slidably connected to the bottom of the inner wall of the frame through two guide rods. Both ends of the U-shaped sliding frame are fixedly connected to toothed plate frames that mesh with the outer surfaces of the two gears. The U-shaped sliding frame is detachably connected to the telescopic end of the electric telescopic rod through a pin.

[0019] Preferably, both sides of the venting cylinder have internal heat collection chambers, and several heat exchange tubes communicating with the inside of the two heat collection chambers are fixedly connected inside the venting cylinder. The two rotating shafts are hollow and are respectively connected to the inside of the two heat collection chambers. One end of the venting cylinder is fixedly connected to a rotating sleeve by a bracket, and the rotating sleeve is rotatably connected to one end of one of the rotating shafts.

[0020] Preferably, the heat exchanger's heat inlet is fixedly connected to the interior of the rotating sleeve via a heating tube, and a recovery tube is connected to the heating tube via a three-way valve.

[0021] A method of using an apparatus for capturing carbon dioxide produced from thermally activated coal gangue includes the following steps:

[0022] S1. Connect the exhaust port of the thermally activated calcined coal gangue to the inlet of the heat exchanger. The gas is heat-treated by the heat exchanger. The heat-treated gas is discharged into the tank of the primary absorption component through the gas injection pipe. The built-in organic amine fully contacts the gas to form carbon dioxide adsorption.

[0023] S2. By starting the circulation drive in the primary absorption component, the organic amine inside the tank is pressurized and circulated to increase the contact strength and range between the gas and the organic amine, and finally the gas after carbon dioxide capture is exported.

[0024] S3. Detect the carbon dioxide content in the gas after carbon dioxide capture in S2;

[0025] When the emitted gas meets the emission standards, it is discharged to the next gas treatment area;

[0026] When the emitted gas does not meet the emission standards, the gas after the primary carbon dioxide capture is directly discharged into the secondary absorption component, where the carbon dioxide in the gas is adsorbed by the adsorbent material built into the secondary absorption component.

[0027] S4. Connect the drive end of the circulation drive unit to the secondary absorption component. When the organic amine inside the tank is pressurized by the circulation drive unit, the absorbent material inside the secondary absorption component is disturbed at the same time to increase the contact range between the gas and the absorbent material. Finally, the gas after secondary capture is discharged to the next gas treatment area.

[0028] (III) Beneficial Effects

[0029] Compared with the prior art, the present invention provides an apparatus and method for capturing carbon dioxide generated from thermally activated coal gangue, which has the following beneficial effects:

[0030] 1. This invention, through the arrangement of a primary absorption component and a secondary absorption component, can perform multiple capture treatments of carbon dioxide in calcination gas. By filling the inside of the tank with organic amine, the organic amine can come into contact with the injected coal gangue thermally activated calcination gas, thereby forming a carbon dioxide capture process. Through the setting of the circulation drive component, the organic amine material inside the tank can be circulated and pressurized, thereby improving the contact effect between the gas and the organic amine material, increasing the carbon dioxide capture effect, and solving the problem that organic amine is prone to oxidation and degradation, which reduces the absorption performance and also causes an increase in solution viscosity, which is not conducive to gas transmission.

[0031] 2. When the two toothed plate frames move up and down, the invention can drive the gears to rotate in both directions at an angle of 20-50 degrees, thereby causing the adsorbed material inside the venting cylinder to sway left and right. This improves the contact between the gas inside the absorption cylinder and the adsorbed material, enhancing the carbon dioxide capture effect. Moreover, it effectively utilizes the driving force of the circulating drive component in the primary absorption component, allowing the primary and secondary absorption components to drive the adsorbed material synchronously, thus enhancing the energy efficiency and environmental protection of the capture equipment and exhibiting excellent energy-saving and environmental protection performance.

[0032] 3. In this invention, the gas after heat exchange is directly discharged into the interior of the rotating sleeve via a heat exchanger, and then discharged into one of the heat collection chambers through the rotating sleeve. The two heat collection chambers are connected by several heat exchange tubes, allowing the gas inside the heat collection chamber to enter the other heat collection chamber through these tubes. The arrangement of these heat exchange tubes heats the alkaline metal inside the venting cylinder, and the clockwise and counterclockwise shaking of the venting cylinder further improves the uniformity of heating, thereby increasing the adsorption capacity of the alkaline metal for carbon dioxide and enhancing the carbon dioxide capture effect. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the device for capturing carbon dioxide generated from thermally activated coal gangue according to the present invention.

[0034] Figure 2 This is a rear view of the structure of the device for capturing carbon dioxide generated from thermally activated coal gangue according to the present invention.

[0035] Figure 3 This is a top cross-sectional view of the device for capturing carbon dioxide generated from thermally activated coal gangue according to the present invention.

[0036] Figure 4 For the present invention Figure 1 A schematic diagram of the structure of the primary absorption component;

[0037] Figure 5 For the present invention Figure 4 Structural sectional view of the middle tank body;

[0038] Figure 6 For the present invention Figure 4 A cross-sectional schematic diagram of the intermediate circulation drive component;

[0039] Figure 7 This is a schematic diagram of the transmission of the cyclic drive component and the secondary absorption component of the present invention;

[0040] Figure 8 This is a schematic diagram showing the connection between the heat exchanger and the secondary absorption assembly of the present invention;

[0041] Figure 9 For the present invention Figure 8 Schematic diagram of the middle absorption cylinder;

[0042] Figure 10 For the present invention Figure 8 A cross-sectional side view of the middle absorption cylinder;

[0043] Figure 11 For the present invention Figure 8 A front view of the cross-section of the absorption cylinder.

[0044] In the diagram: 1. Frame;

[0045] 2. Heat exchanger; 21. Heating tube; 22. Recovery tube; 23. Gas injection tube;

[0046] 3. Primary absorption assembly; 31. Tank body; 32. Vent frame; 33. Exhaust pipe; 34. Carbon dioxide detector; 35. Annular constriction block; 36. No. 1 exhaust pipe;

[0047] 37. Circulation drive component; 371. Circulation cylinder; 372. Outlet pipe; 373. Suction pipe; 374. Material changing pipe; 375. Piston plate; 376. One-way valve plate; 377. Electric telescopic rod;

[0048] 4. Secondary absorption assembly; 41. Absorption cylinder; 42. Rotating shaft; 43. Ventilation cylinder; 44. Material guide frame; 45. Injection frame; 46. Cover plate; 47. Second air outlet pipe; 48. Heat collection chamber; 49. Heat exchange tube; 410. Rotating sleeve;

[0049] 411. Rotating component; 4111. Gear; 4112. Guide rod; 4113. U-shaped sliding frame; 4114. Gear plate frame; 4115. Pin component. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] Example 1:

[0052] See attached document Figure 1-11 A device for capturing carbon dioxide generated from thermally activated coal gangue includes a frame 1, and a heat exchanger 2 and a capturing mechanism are respectively installed inside the frame 1.

[0053] The heat exchanger 2 is used to process the high-temperature gas during the thermal activation and calcination of coal gangue, which not only recovers heat but also facilitates the improvement of the collection effect of the subsequent collection mechanism.

[0054] The collection mechanism includes a primary absorption component 3 for absorbing carbon dioxide generated during the activation process via organic amines and a secondary absorption component 4 for secondary absorption of carbon dioxide, and the primary absorption component 3 and the secondary absorption component 4 are connected by pipelines.

[0055] The primary absorption component 3 can be used to absorb the calcined gas during heat exchange. If the carbon dioxide concentration of the calcined gas is high and the primary absorption component 3 cannot fully perform the absorption, the secondary absorption component 4 can be used for secondary absorption to further improve its carbon dioxide adsorption performance.

[0056] The primary absorption assembly 3 includes a tank 31 fixed to the bottom of the frame 1. The tank 31 is filled with organic amine, and the outer surface of the tank 31 is provided with a circulation drive 37 for pressurizing and circulating the organic amine inside the tank 31 and for agitating the absorbent material inside the secondary absorption assembly 4. The drive end of the circulation drive 37 is detachably connected to the secondary absorption assembly 4.

[0057] By filling the tank 31 with organic amine, the organic amine can come into contact with the injected coal gangue thermally activated calcined gas, thus forming a carbon dioxide capture process. Through the setting of the circulation drive 37, the organic amine material inside the tank 31 can be circulated and pressurized, thereby improving the contact effect between the gas and the organic amine material, increasing the carbon dioxide capture effect, and solving the problem that organic amine is prone to oxidation and degradation, which reduces the absorption performance and also increases the solution viscosity, which is not conducive to gas transmission.

[0058] Carbon dioxide is captured by chemical absorption. Organic amines come into contact with carbon dioxide, and a chemical reaction occurs to recover the carbon dioxide. The reverse reaction is used to regenerate the absorbent. The removal rate is high and it is suitable for treating mixed gases with low carbon dioxide partial pressure.

[0059] The air inlet of heat exchanger 2 is connected to the exhaust port of coal gangue calcination in the outside. The air outlet of heat exchanger 2 is connected to the bottom of the inner part of tank 31 through air injection pipe 23. The heat conduction port of heat exchanger 2 is connected to secondary absorption component 4 through heating pipe 21.

[0060] The gas inlet of heat exchanger 2 is connected to the exhaust port of coal gangue calcination in the outside, so that the gas discharged from the exhaust port of coal gangue calcination enters heat exchanger 2, and the gas after heat exchange is discharged to tank 31 through gas injection pipe 23 for carbon dioxide capture.

[0061] By setting up heat exchanger 2, the heat medium after heat exchange can be discharged to the secondary absorption component 4, thereby heating the alkaline metal adsorbed material in the secondary absorption component 4 and improving its adsorption and capture performance.

[0062] See attached document Figure 5 A vent frame 32 is fixedly connected to the inner surface of the tank body 31, an exhaust pipe 33 is fixedly connected to the top of the tank body 31, and a carbon dioxide detector 34 is installed on the exhaust pipe 33. An annular constriction block 35 that communicates with the inside of the exhaust pipe 33 is fixedly connected to the top of the inner wall of the tank body 31.

[0063] The vent frame 32 is used to temporarily store the organic amine for carbon dioxide absorption, so that the gas entering the tank 31 enters through the vent hole at the bottom of the vent frame 32 and fully contacts the built-in organic amine to form carbon dioxide absorption. Here, the organic amine is triethanolamine.

[0064] The organic amine flows downward through several air vents below the air vent frame 32, forming a cyclic adsorption process.

[0065] An annular constriction block 35 is provided at the position of the exhaust pipe 33, thereby changing the intensity of gas output and increasing the absorption capacity of the subsequent secondary absorption component 4. Moreover, by cooperating with the setting of the circulation drive component 37, the gas pressure inside the tank 31 can be increased, thereby increasing the contact strength between the gas and the organic amine and increasing its absorption capacity.

[0066] See attached document Figure 6 and Figure 7 The circulation drive unit 37 includes a circulation cylinder 371 fixed to the outer surface of the tank body 31 by a bracket. The top and bottom of the circulation cylinder 371 are respectively fixedly connected to an outlet pipe 372 and a suction pipe 373. One-way control valves are installed on both the outlet pipe 372 and the suction pipe 373. The outlet pipe 372 is connected to a material exchange pipe 374 through a No. 1 three-way valve. A feeding port is installed on the outer surface of the tank body 31.

[0067] The suction pipe 373 is used to suction the organic amine material inside the tank 31, and the outlet pipe 372 is used to discharge the suctioned organic amine material into the vent frame 32, forming a circulation and guiding operation of the organic amine material, thereby improving the contact effect between the gas and the organic amine material, increasing the carbon dioxide capture effect, and solving the problem that organic amine is prone to oxidation and degradation, which reduces the absorption performance and also increases the solution viscosity, which is not conducive to gas transmission.

[0068] The outlet pipe 372 is connected to the material exchange pipe 374 via a three-way valve. This allows the flow of organic amine material inside the outlet pipe 372 to be switched via the three-way valve. The extracted organic amine material can then be directly exported through the material exchange pipe 374. This, combined with the injection of organic amine material through the feed port, facilitates the replacement of organic amine material and improves the collection efficiency of the collection equipment.

[0069] The piston plate 375 is slidably connected to the inside of the circulation cylinder 371 through a sealing sleeve, and the piston plate 375 has several openings inside, and each of the several openings is provided with a one-way valve plate 376. The outer surface of the tank body 31 is fixedly connected to an electric telescopic rod 377 through a bracket, and the telescopic end of the electric telescopic rod 377 is fixedly connected to the top of the piston plate 375 through a drive shaft.

[0070] The electric telescopic rod 377 is connected to an external power source and control switch. It is used to drive the piston plate 375 to move up and down reciprocally via the drive shaft. The upward movement of the piston plate 375 can create a negative pressure state at the bottom of the circulation cylinder 371. Then, the organic amine material at the bottom of the tank 31 can be extracted through the suction pipe 373. The piston plate 375 is equipped with a one-way valve plate 376 inside, so that when the piston plate 375 moves downward, the organic amine material extracted below it can enter the upper part of the piston plate 375 through the opening.

[0071] Combined with the upward movement of the piston plate 375, not only can a secondary suction operation be performed, but the organic amine material sucked in the previous round can also be discharged into the vent frame 32 through the outlet pipe 372, thereby forming a circulation and diversion operation of the organic amine material inside the tank 31.

[0072] See attached document Figures 7 to 11 The secondary absorption assembly 4 includes an absorption cylinder 41 fixed to the bottom of the frame 1 by a bracket. Both ends of the absorption cylinder 41 are rotatably connected to a rotating shaft 42. A breathable cylinder 43 with an opening at the top is fixedly connected between the two rotating shafts 42. Both sides of the inner surface of the absorption cylinder 41 are provided with protruding isolation blocks.

[0073] A breathable cylinder 43 is fixedly connected between two rotating shafts 42. When one of the rotating shafts 42 is rotated by an external motor, it can work with the other rotating shaft 42 to drive the breathable cylinder 43 to rotate, thereby turning the adsorbed material over, increasing the contact range of the adsorbed material and increasing its adsorption capacity.

[0074] The top of the air cylinder 43 is designed to be open, which makes it easy for workers to add adsorbent material into the air cylinder 43. When the air cylinder 43 is rotated to the bottom through the opening, the adsorbent material can be discharged, thus completing the adsorbent material replacement work.

[0075] The absorption cylinder 41 has protruding isolation blocks on both sides of its inner surface, which not only facilitates the rotational support of the air vent 43 through the two protruding isolation blocks, but also ensures that the gas inside the absorption cylinder 41 must enter the air vent 43 for adsorption.

[0076] In this embodiment, the adsorbent material inside the ventilator 43 is activated carbon particles or zeolite.

[0077] The bottom of the absorption cylinder 41 is fixedly connected to the guide frame 44, and the bottom of the guide frame 44 is provided with a baffle. One end of the exhaust pipe 33 is connected to the inside of the guide frame 44, and the exhaust pipe 33 is connected to the first exhaust pipe 36 through the second three-way valve.

[0078] The guide frame 44 is used to export the saturated adsorbent material. One end of the exhaust pipe 33 is connected to the inside of the guide frame 44 so that the gas from the primary adsorption process can be discharged into the inside of the absorption cylinder 41 through the exhaust pipe 33. The gas then comes into contact with the adsorbent material inside the ventilation cylinder 43 to form a secondary adsorption of carbon dioxide.

[0079] The exhaust pipe 33 is connected to the No. 1 exhaust pipe 36 via the No. 2 three-way valve, so that after the primary absorption component 3 has completely treated the carbon dioxide gas, it can be directly discharged through the No. 1 exhaust pipe 36.

[0080] The top of the absorption cylinder 41 is fixedly connected to the injection frame 45, and the top of the injection frame 45 is detachably installed with a cover plate 46, and a second air outlet pipe 47 is installed on the cover plate 46.

[0081] The filling frame 45 allows workers to easily insert adsorbent material into the venting cylinder 43. The filling frame 45 is sealed by the cover plate 46, and the gas after secondary absorption treatment can be discharged through the second vent pipe 47 on the cover plate 46.

[0082] A method of using an apparatus for capturing carbon dioxide produced from thermally activated coal gangue includes the following steps:

[0083] S1. Connect the exhaust port of the coal gangue thermal activation calcination to the air inlet of the heat exchanger 2. The gas is heat-treated by the heat exchanger 2. The heat-treated gas is discharged into the tank 31 of the primary absorption component 3 through the gas injection pipe 23. The built-in organic amine fully contacts the gas to form carbon dioxide adsorption.

[0084] S2. By starting the circulation drive 37 in the primary absorption component 3, the organic amine inside the tank 31 is pressurized and circulated to increase the contact strength and range between the gas and the organic amine, and finally the gas after carbon dioxide capture is exported.

[0085] S3. Detect the carbon dioxide content in the gas after carbon dioxide capture in S2;

[0086] When the emitted gas meets the emission standards, it is discharged to the next gas treatment area;

[0087] When the emitted gas does not meet the emission standards, the gas after the primary carbon dioxide capture is directly discharged into the secondary absorption component 4, where the carbon dioxide in the gas is adsorbed by the adsorbent material built into the secondary absorption component 4.

[0088] S4. Connect the drive end of the circulation drive 37 to the secondary absorption assembly 4. When the organic amine inside the tank 31 is pressurized by the circulation drive 37, the absorbent material inside the secondary absorption assembly 4 is disturbed at the same time to increase the contact range between the gas and the absorbent material. Finally, the gas after secondary capture is discharged to the next gas treatment area.

[0089] Example 2: The difference from Example 1 is that;

[0090] See attached document Figure 6 and Figure 9 The vent 43 is provided with a rotating component 411 for driving the rotation of the two rotating shafts 42;

[0091] The rotating component 411 drives the two rotating shafts 42 to rotate, which in turn drives the venting cylinder 43 to rotate in a rocking motion, thereby turning over the built-in adsorbent material and increasing the contact strength between the adsorbent material and the gas. Furthermore, by moving the opening on the venting cylinder 43 to the bottom, the adsorbent material inside the venting cylinder 43 can be discharged downwards and discharged through the guide frame 44. The addition of adsorbent material can be carried out through the filling frame 45, providing a good material replacement function.

[0092] The rotating component 411 includes gears 4111 fixed to the outer surfaces of two rotating shafts 42. The bottom of the inner wall of the frame 1 is slidably connected to a U-shaped sliding frame 4113 via two guide rods 4112. Both ends of the U-shaped sliding frame 4113 are fixedly connected to toothed plate frames 4114 that mesh with the outer surfaces of the two gears 4111. The U-shaped sliding frame 4113 is detachably connected to the telescopic end of the electric telescopic rod 377 via a pin 4115.

[0093] The lengths of the two toothed plate frames 4114 are set to drive the gear 4111 to rotate 20-50 degrees. This allows the gear 4111 to rotate in both directions at an angle of 20-50 degrees when the two toothed plate frames 4114 move up and down. This causes the adsorbed material inside the ventilator 43 to sway left and right, thereby improving the contact between the gas inside the absorption cylinder 41 and the adsorbed material, thus enhancing the carbon dioxide capture effect. Furthermore, it effectively utilizes the driving force of the circulation drive component 37 in the primary absorption component 3, enabling the primary absorption component 3 and the secondary absorption component 4 to drive the adsorbed material synchronously. This enhances the energy efficiency and environmental friendliness of the capture equipment, resulting in excellent energy-saving and environmental protection performance.

[0094] Example 3: The difference from Example 2 is that;

[0095] See attached document Figure 10 and Figure 11 Both sides of the vent 43 are provided with heat collection chambers 48, and several heat exchange tubes 49 are fixedly connected inside the vent 43 and communicate with the inside of the two heat collection chambers 48. The two rotating shafts 42 are hollow and are respectively connected to the inside of the two heat collection chambers 48. One end of the vent 43 is fixedly connected to a rotating sleeve 410 through a bracket, and the rotating sleeve 410 is rotatably connected to one end of one of the rotating shafts 42.

[0096] In this embodiment, since carbon dioxide is an acidic gas, it is easy to be adsorbed on the surface of slightly alkaline materials; the adsorbent material inside the vent 43 is an alkaline metal such as Na2O, K2O, CaO, MgO and Al2O3. Metal oxides have good adsorption capacity at high temperatures, especially aluminum oxide. When alkali metals are added, its adsorption capacity at high temperatures can be greatly improved compared with physical adsorbents.

[0097] The two heat collection chambers 48 are fixedly connected by a number of heat exchange tubes 49, so that the heat source inside one heat collection chamber 48 can flow to the other heat collection chamber 48 through the heat exchange tubes 49. The heat source can then heat the alkaline metal inside the venting cylinder 43 through the heat exchange tubes 49, thereby increasing the adsorption capacity of the alkaline metal.

[0098] The heat inlet of heat exchanger 2 is fixedly connected to the inside of rotating sleeve 410 through heating tube 21, and a recovery tube 22 is connected to heating tube 21 through a three-way valve No. 3.

[0099] The heat inlet of heat exchanger 2 is fixedly connected to the interior of rotating sleeve 410 through heating pipe 21, so that the gas after heat exchange in heat exchanger 2 can be directly discharged into the interior of rotating sleeve 410 and discharged into one of the heat collection chambers 48 through rotating sleeve 410. The two heat collection chambers 48 are connected by several heat exchange pipes 49, so that the gas inside the heat collection chamber 48 can enter the other heat collection chamber 48 through several heat exchange pipes 49. Through the arrangement of several heat exchange pipes 49, the alkaline metal inside the venting cylinder 43 can be heated. In conjunction with the clockwise and counterclockwise shaking of the venting cylinder 43, the uniformity of its heating is further improved, thereby improving the adsorption capacity of alkaline metal for carbon dioxide and increasing its carbon dioxide capture effect. The gas after heat exchange is recovered to the boiler through another rotating shaft 42 for waste heat recovery.

[0100] The presence of the recovery pipe 22 allows the heat from the heat exchanger 2 to be directly recovered to the boiler for waste heat recovery when there is no need to heat the adsorbed material.

[0101] It should be noted that the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0102] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for capturing carbon dioxide generated from thermally activated coal gangue, comprising a frame (1), characterized in that: The frame (1) is equipped with a heat exchanger (2) and a collection mechanism. The trapping mechanism includes a primary absorption component (3) for absorbing carbon dioxide generated during the activation process via organic amines and a secondary absorption component (4) for secondary absorption of carbon dioxide, and the primary absorption component (3) and the secondary absorption component (4) are connected by pipelines. The primary absorption assembly (3) includes a tank (31) fixed to the bottom of the frame (1). The tank (31) is filled with organic amine. The outer surface of the tank (31) is provided with a circulation drive (37) for pressurizing and circulating the organic amine inside the tank (31) and for agitating the absorbent material inside the secondary absorption assembly (4). The drive end of the circulation drive (37) is detachably connected to the secondary absorption assembly (4). The air inlet of the heat exchanger (2) is connected to the exhaust port of the coal gangue calcination outside. The air outlet of the heat exchanger (2) is connected to the bottom of the tank (31) through the air injection pipe (23). The heat conduction port of the heat exchanger (2) is connected to the secondary absorption assembly (4) through the heating pipe (21). The circulation drive unit (37) includes a circulation cylinder (371) fixed to the outer surface of the tank (31) by a bracket. The top and bottom of the circulation cylinder (371) are respectively connected to an outlet pipe (372) and a suction pipe (373). One-way control valves are installed on both the outlet pipe (372) and the suction pipe (373). The outlet pipe (372) is connected to a material replacement pipe (374) through a No. 1 three-way valve. A feeding port is installed on the outer surface of the tank (31). A piston plate (375) is slidably connected to the inside of the circulation cylinder (371) through a sealing sleeve. Several openings are provided inside the piston plate (375). One-way valve plates (376) are provided inside the several openings. An electric telescopic rod (377) is fixedly connected to the outer surface of the tank (31) by a bracket. The telescopic end of the electric telescopic rod (377) is fixedly connected to the top of the piston plate (375) through a drive shaft. The secondary absorption assembly (4) includes a component fixed to the bottom of the frame frame (1) by a bracket. The absorption cylinder (41) of the part has a rotating shaft (42) rotatably connected to both ends of the absorption cylinder (41). A ventilator (43) with an opening at the top is fixedly connected between the two rotating shafts (42). Both sides of the inner surface of the absorption cylinder (41) are provided with protruding isolation blocks. Both sides of the ventilator (43) have heat collection chambers (48) inside. Several heat exchange tubes (49) communicating with the inside of the two heat collection chambers (48) are fixedly connected inside the ventilator (43). The two rotating shafts (42) are hollow and communicate with the inside of the two heat collection chambers (48) respectively. A rotating sleeve (410) is fixedly connected to one end of the ventilator (43) through a bracket. The rotating sleeve (410) is rotatably connected to one end of one of the rotating shafts (42). The heat conduction port of the heat exchanger (2) is fixedly connected to the inside of the rotating sleeve (410) through a heating tube (21). A recovery tube (22) is connected to the heating tube (21) through a three-way valve. The ventilator (43) is provided with a rotating component (411) for rotating and driving the two rotating shafts (42). The rotating component (411) includes gears (4111) fixed to the outer surfaces of two rotating shafts (42). The bottom of the inner wall of the frame (1) is slidably connected to a U-shaped sliding frame (4113) via two guide rods (4112). Both ends of the U-shaped sliding frame (4113) are fixedly connected to toothed plate frames (4114) that mesh with the outer surfaces of the two gears (4111). The U-shaped sliding frame (4113) and the telescopic end of the electric telescopic rod (377) are detachably connected via a pin (4115).

2. The device for capturing carbon dioxide generated from thermally activated coal gangue according to claim 1, characterized in that: A vent frame (32) is fixedly connected to the inner surface of the tank (31), an exhaust pipe (33) is fixedly connected to the top of the tank (31), and a carbon dioxide detector (34) is installed on the exhaust pipe (33). An annular constriction block (35) that communicates with the inside of the exhaust pipe (33) is fixedly connected to the top of the inner wall of the tank (31).

3. The device for capturing carbon dioxide generated from thermally activated coal gangue according to claim 2, characterized in that: The bottom of the absorption cylinder (41) is fixedly connected to the guide frame (44), and the bottom of the guide frame (44) is provided with a baffle. One end of the exhaust pipe (33) is connected to the inside of the guide frame (44), and the exhaust pipe (33) is connected to the first air outlet pipe (36) through the second three-way valve. The top of the absorption cylinder (41) is fixedly connected to the injection frame (45), and the top of the injection frame (45) is detachably installed with a cover plate (46), and a second air outlet pipe (47) is installed on the cover plate (46).

4. A method of using the apparatus for capturing carbon dioxide generated from thermally activated coal gangue as described in any one of claims 1-3, characterized in that, Includes the following steps: S1. Connect the exhaust port of the coal gangue thermal activation calcination to the air inlet of the heat exchanger (2). The gas is heat-treated by the heat exchanger (2). The gas after heat exchange is discharged into the tank (31) of the primary absorption component (3) through the gas injection pipe (23). The built-in organic amine is in full contact with the gas to form carbon dioxide adsorption. S2. By starting the circulation drive (37) in the primary absorption component (3), the organic amine inside the tank (31) is pressurized and circulated to increase the contact strength and contact range between the gas and the organic amine, and finally the gas after carbon dioxide capture is exported. S3. Detect the carbon dioxide content in the gas after carbon dioxide capture in S2; When the emitted gas meets the emission standards, it is discharged to the next gas treatment area; When the discharged gas does not meet the emission standards, the gas after the primary carbon dioxide capture is directly discharged into the secondary absorption component (4), and the carbon dioxide in the gas is adsorbed by the adsorbent material built into the secondary absorption component (4). S4. Connect the drive end of the circulation drive (37) to the secondary absorption assembly (4) for transmission. When the organic amine inside the tank (31) is circulated and pressurized by the circulation drive (37), the absorbent material inside the secondary absorption assembly (4) is disturbed at the same time to increase the contact range between the gas and the absorbent material. Finally, the gas after secondary capture is discharged to the next gas treatment area.

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