Device and method for capturing carbon dioxide generated by heat-activated coal gangue

Abstract

The invention relates to the technical field of carbon dioxide trapping, and discloses a device for trapping carbon dioxide generated by heat activation coal gangue, which comprises a rack frame, and a heat exchanger and a trapping mechanism are respectively arranged in the rack frame. According to the device for capturing carbon dioxide generated by heat-activated coal gangue, through the arrangement of the primary absorption assembly and the secondary absorption assembly, carbon dioxide in calcination gas can be captured and treated multiple times, the tank body is filled with organic amine, the organic amine can make contact with injected coal gangue heat-activated calcination gas, and the carbon dioxide in the calcination gas can be captured and treated. The organic amine material in the tank body is circularly guided and pressurized through the circulating driving part, so that the contact effect of the gas and the organic amine material is improved, the carbon dioxide trapping effect is improved, and the problems that the absorption performance is reduced due to the fact that the organic amine is easily oxidized and degraded, and the carbon dioxide trapping effect is reduced are solved. Meanwhile, the viscosity of the solution is increased, and gas transmission is not facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon dioxide capture, and in particular to a device and method for capturing carbon dioxide generated by thermally activated coal gangue. Background Art

[0002] Gangue is a kind of black-gray waste that is harder than coal and has a lower carbon content and accompanies coal seams during the coal-forming process. Large-scale disposal and resource utilization of gangue are important contents of solid waste utilization, and calcination thermal activation is an effective means to stimulate the activity of gangue. The fired gangue can improve the grindability, refractoriness, chemical stability, and significantly increase the active silicon oxide and alumina. However, when the gangue is thermally activated and calcined, the carbon in the gangue combines with oxygen in the air to form carbon dioxide. With the intensification of global warming, reducing the emission of greenhouse gases such as carbon dioxide and protecting the environment have become one of the core global issues to be solved. Therefore, carbon dioxide capture equipment is generally required to achieve carbon dioxide emission reduction.

[0003] Most of the carbon dioxide capture equipment uses solution adsorption for treatment. The commonly used adsorbent is amine solution. This chemical absorption method uses the absorbent and CO 2 , chemical reaction occurs to recover CO 2 The purpose is to recover CO 2 It is one of the most effective methods; however, there are still some disadvantages in the actual adsorption capture process, such as the amine is easily oxidized and degraded, which reduces the absorption performance, and also causes the solution viscosity to increase, which is not conducive to the transmission of gas and affects its CO 2 The normal capture work; and the lack of multiple capture function, so it is not convenient for high concentration CO 2 Rapid processing reduces the effectiveness of the capture equipment. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a device for capturing carbon dioxide generated by thermally activated coal gangue. By setting a primary absorption component and a secondary absorption component, the carbon dioxide in the calcined gas can be captured multiple times. By filling the interior of the tank with organic amine, the organic amine can be in contact with the injected coal gangue thermally activated calcined gas to form a carbon dioxide capture operation. By setting a circulating drive component, the organic amine material inside the tank can be circulated, guided 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 the organic amine is easily oxidized and degraded, which reduces the absorption performance and increases the viscosity of the solution, which is not conducive to the transmission of the gas.

[0005] (II) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for capturing carbon dioxide generated by thermally activated coal gangue, comprising a frame, wherein a heat exchanger and a capture mechanism are respectively arranged inside the frame; The capture mechanism includes a primary absorption component for absorbing carbon dioxide generated in the activation process by organic amine and a secondary absorption component for secondary absorption of carbon dioxide, and the primary absorption component and the secondary absorption component are connected by a pipeline; The primary absorption assembly includes a tank body fixed to the bottom of the frame, the interior of the tank body is filled with organic amine, and the outer surface of the tank body is provided with a circulation drive member for pressurizing and circulating the organic amine in the tank body and for disturbing the absorption material in the secondary absorption assembly, and the driving end of the circulation drive member is detachably connected to the secondary absorption assembly; The air inlet of the heat exchanger is connected to the external coal gangue calcination exhaust port, the air outlet of the heat exchanger is connected to the inner bottom of the tank through the air injection pipe, and the heat conduction port of the heat exchanger is connected to the secondary absorption component through the heating pipe.

[0006] Preferably, a breathable frame is fixedly connected to the inner surface of the tank body, an exhaust pipe is fixedly connected to the top of the tank body, and a carbon dioxide detector is installed on the exhaust pipe, and an annular shrinking block connected to the inside of the exhaust pipe is fixedly connected to the top of the inner wall of the tank body.

[0007] Preferably, the circulation drive member comprises a circulation drum fixed to the outer surface of the tank body by a bracket, the top and the bottom of the circulation drum are respectively fixedly connected with an outlet pipe and a suction pipe, a one-way control valve is installed on the outlet pipe and the suction pipe, the outlet pipe is connected to a material exchange pipe through a No. 1 three-way valve, and a feeding port is installed on the outer surface of the tank body; The interior of the circulation cylinder is slidably connected to a piston plate via a sealing sleeve, and a plurality of openings are provided inside the piston plate, and a one-way valve sheet is provided inside each of the plurality of openings. The outer surface of the tank body is fixedly connected to an electric telescopic rod via a bracket, and the telescopic end of the electric telescopic rod is fixedly connected to the top of the piston plate via a driving shaft.

[0008] Preferably, the secondary absorption assembly comprises an absorption cylinder fixed to the bottom of the frame frame through a bracket, both ends of the absorption cylinder are rotatably connected with a rotating shaft, a ventilation cylinder with an opening on the top is fixedly connected between the two rotating shafts, and both sides of the inner surface of the absorption cylinder are provided with raised isolation blocks; The bottom of the absorption cylinder is fixedly connected to a material guide frame, and a baffle is provided at the bottom of the material guide frame. One end of the exhaust pipe is connected to the interior of the material guide frame, and the exhaust pipe is connected to a No. 1 exhaust pipe through a No. 2 three-way valve; The top of the absorption cylinder is fixedly connected to a material injection frame, and a cover plate is detachably installed on the top of the material injection frame, and a No. 2 air outlet pipe is installed on the cover plate.

[0009] Preferably, the ventilation cylinder is provided with a rotating member for rotating and driving the two rotating shafts; The rotating member includes gears fixed to the outer surfaces of the two rotating shafts. The bottom of the inner wall of the rack frame is slidably connected to a U-shaped sliding frame through two guide rods. Both ends of the U-shaped sliding frame are fixedly connected to toothed plate frames meshing 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 latch member.

[0010] Preferably, heat collection cavities are opened on both sides of the breathable cylinder, and a plurality of heat exchange tubes connected to the interior of the two heat collection cavities are fixedly connected inside the breathable cylinder, the two rotating shafts are hollow, and the two rotating shafts are respectively connected to the interior of the two heat collection cavities, one end of the breathable cylinder is fixedly connected to a rotating sleeve through a bracket, and the rotating sleeve is rotatably connected to one end of one of the rotating shafts.

[0011] Preferably, the heat conduction port of the heat exchanger is fixedly connected to the interior of the rotating sleeve through a heating pipe, and the heating pipe is connected to a recovery pipe through a No. 3 three-way valve.

[0012] A method for using a device for capturing carbon dioxide generated by thermally activated coal gangue comprises the following steps: S1. Connect the exhaust port of the coal gangue thermal activation calcination with the air inlet of the heat exchanger, perform heat exchange treatment on the gas through the heat exchanger, and discharge the heat-exchanged gas into the tank of the primary absorption component through the gas injection pipe, so that the built-in organic amine is fully in contact with the gas to form carbon dioxide adsorption work; S2. By starting the circulation drive in the primary absorption assembly, the organic amine in the tank is pressurized and circulated to increase the contact strength and contact range between the gas and the organic amine, and finally the gas captured by the carbon dioxide is discharged; S3, detecting the carbon dioxide content of the gas after the carbon dioxide is captured in S2; When the discharged gas meets the emission standards, it is discharged to the next round of 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, and the carbon dioxide in the gas is adsorbed by the adsorption material built into the secondary absorption component; S4. The driving end of the circulation drive is connected to the secondary absorption component. When the organic amine inside the tank is circulated and pressurized by the circulation drive, the absorption material built into the secondary absorption component is disturbed simultaneously to increase the contact range between the gas and the absorption material. Finally, the gas captured for the second time is discharged to the next round of gas treatment area.

[0013] (III) Beneficial effects Compared with the prior art, the present invention provides a device and method for capturing carbon dioxide generated by thermally activated coal gangue, which has the following beneficial effects: 1. The present invention can capture and treat the carbon dioxide in the calcined gas multiple times by setting up a primary absorption component and a secondary absorption component. By filling the interior of the tank with organic amine, the organic amine can be in contact with the injected gangue heat-activated calcined gas to form a carbon dioxide capture operation. By setting up a circulating drive component, the organic amine material in 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 the organic amine is easily oxidized and degraded, which reduces the absorption performance and increases the viscosity of the solution, which is not conducive to the transmission of the gas.

[0014] 2. When the two toothed plate frames of the present invention reciprocate up and down, they can drive the gears to rotate forward and backward at an angle of 20-50, thereby driving the adsorption material inside the breathable cylinder to shake left and right, thereby improving the contact between the gas inside the absorption cylinder and the adsorption material, improving its carbon dioxide capture effect, and effectively utilizing the driving force of the circulating drive member in the primary absorption component, so that the primary absorption component and the secondary absorption component drive the adsorption material synchronously, thereby enhancing the energy-saving and environmental protection of the capture equipment, and having good energy-saving and environmental protection performance.

[0015] 3. The present invention discharges the gas after heat exchange directly to the interior of the rotating sleeve through the heat exchanger, and then discharges it to one of the heat collecting chambers through the rotating sleeve. The two heat collecting chambers are connected by a plurality of heat exchange tubes, so that the gas inside the heat collecting chamber can enter into another heat collecting chamber through the plurality of heat exchange tubes. The arrangement of the plurality of heat exchange tubes can heat the alkaline metal inside the breathable cylinder, and the clockwise and counterclockwise shaking of the breathable cylinder can further improve the uniformity of heating, thereby improving the adsorption of carbon dioxide by the alkaline metal and increasing the carbon dioxide capture effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a device for capturing carbon dioxide generated by thermally activated coal gangue according to the present invention; Figure 2 A rear view of the structure of the device for capturing carbon dioxide generated by thermally activated coal gangue according to the present invention; Figure 3 A cross-sectional top view of a device for capturing carbon dioxide generated by thermally activated coal gangue according to the present invention; Figure 4 For the present invention Figure 1 A schematic diagram of the structure of the primary absorption component; Figure 5 For the present invention Figure 4 Structural cross-sectional view of the middle tank body; Figure 6 For the present invention Figure 4 A schematic cross-sectional view of a mid-cycle drive member; Figure 7 It is a transmission schematic diagram of the circulating driving member and the secondary absorption assembly of the present invention; Figure 8 It is a schematic diagram of the connection between the heat exchanger and the secondary absorption component of the present invention; Fig. 9 For the present invention Figure 8 Schematic diagram of the structure of the middle absorption tube; Fig.10 For the present invention Figure 8 a cross-sectional side view of the middle absorption tube; Fig.11 For the present invention Figure 8 Cross-sectional front view of the middle absorber.

[0017] In the figure: 1. Rack frame; 2. Heat exchanger; 21. Heating pipe; 22. Recovery pipe; 23. Gas injection pipe; 3. Primary absorption assembly; 31. Tank body; 32. Breathable frame; 33. Exhaust pipe; 34. Carbon dioxide detector; 35. Annular shrinking block; 36. No. 1 exhaust pipe; 37, circulation drive member; 371, circulation cylinder; 372, outlet pipe; 373, suction pipe; 374, material change pipe; 375, piston plate; 376, one-way valve plate; 377, electric telescopic rod; 4. Secondary absorption assembly; 41. Absorption cylinder; 42. Rotating shaft; 43. Breathing cylinder; 44. Material guide frame; 45. Material injection frame; 46. Cover plate; 47. Second air outlet pipe; 48. Heat collecting chamber; 49. Heat exchange tube; 410. Rotating sleeve; 411, rotating part; 4111, gear; 4112, guide rod; 4113, U-shaped sliding frame; 4114, toothed plate frame; 4115, latch part. DETAILED DESCRIPTION

[0018] 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Embodiment 1: See attached Figure 1-11 , a device for capturing carbon dioxide generated by thermally activated coal gangue, comprising a frame 1, wherein a heat exchanger 2 and a capturing mechanism are respectively arranged inside the frame 1; 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 the heat but also facilitates improving the capture effect of the subsequent capture mechanism; The capture mechanism includes a primary absorption component 3 for absorbing carbon dioxide generated in the activation process by organic amine 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 a pipeline; The primary absorption component 3 can absorb the heat exchanged calcined gas. If the carbon dioxide concentration of the calcined gas is high and the primary absorption component 3 cannot fully absorb the gas, the secondary absorption component 4 can be used to further improve the carbon dioxide adsorption performance. The primary absorption assembly 3 includes a tank body 31 fixed to the bottom of the frame 1, the interior of the tank body 31 is filled with organic amine, and the outer surface of the tank body 31 is provided with a circulation drive member 37 for pressurizing and circulating the organic amine in the tank body 31 and for disturbing the absorption material in the secondary absorption assembly 4, and the driving end of the circulation drive member 37 is detachably connected to the secondary absorption assembly 4; By filling the tank 31 with organic amine, the organic amine can be in contact with the injected coal gangue heat activated calcination gas to form carbon dioxide capture work. By setting the circulation drive 37, the organic amine material in 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 the organic amine is easily oxidized and degraded, which reduces the absorption performance and increases the viscosity of the solution, which is not conducive to the transmission of the gas. Carbon dioxide is captured by chemical absorption. Organic amines are brought into contact with carbon dioxide to produce a chemical reaction to achieve the purpose of recovering 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. The air inlet of the heat exchanger 2 is connected to the external coal gangue calcination exhaust port, the air outlet of the heat exchanger 2 is connected to the inner bottom of the tank body 31 through the air injection pipe 23, and the heat conduction port of the heat exchanger 2 is connected to the secondary absorption component 4 through the heating pipe 21; The air inlet of the heat exchanger 2 is connected to the external gangue calcination exhaust port, so that the gas discharged from the gangue calcination exhaust port enters the heat exchanger 2, and the gas after heat exchange is discharged into the tank 31 through the gas injection pipe 23 to capture carbon dioxide; By setting the heat exchanger 2, the heat medium after heat exchange can be discharged to the secondary absorption component 4, and then the alkaline metal adsorption material in the secondary absorption component 4 is heated to improve its adsorption and capture performance.

[0020] See attached Figure 5 The inner surface of the tank body 31 is fixedly connected with a vent frame 32, the top of the tank body 31 is fixedly connected with an exhaust pipe 33, and a carbon dioxide detector 34 is installed on the exhaust pipe 33, and the top of the inner wall of the tank body 31 is fixedly connected with an annular shrinking block 35 connected with the inside of the exhaust pipe 33; The ventilation frame 32 is provided to temporarily store the organic amine for carbon dioxide absorption, so that the gas entering the tank body 31 enters through the ventilation holes at the bottom of the ventilation frame 32 and fully contacts with the built-in organic amine to form carbon dioxide absorption work. Here, the organic amine is triethanolamine. The organic amine flows downward through the several air holes below the air permeable frame 32, forming a cyclic adsorption operation; An annular necking block 35 is provided at the position of the exhaust pipe 33, thereby changing the intensity of gas extraction and increasing the absorption strength of the subsequent secondary absorption component 4. In addition, by cooperating with the setting of the circulation drive member 37, the gas pressure inside the tank body 31 can be increased, thereby increasing the contact strength between the gas and the organic amine and increasing the absorption strength.

[0021] See attached Figure 6 and Figure 7 The circulation drive member 37 includes a circulation cylinder 371 fixed to the outer surface of the tank body 31 through a bracket, and the top and bottom of the circulation cylinder 371 are respectively fixedly connected with an outlet pipe 372 and a suction pipe 373, and a one-way control valve is installed on 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, and a feeding port is installed on the outer surface of the tank body 31; The suction pipe 373 is provided to suck the organic amine material inside the tank body 31, and the outlet pipe 372 is provided to discharge the sucked organic amine material into the air permeable frame 32, thereby forming a circulation and diversion work 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 the organic amine is easily oxidized and degraded, resulting in a decrease in absorption performance, and at the same time causing an increase in solution viscosity, which is not conducive to gas transmission; The outlet pipe 372 is connected to the material change pipe 374 through the No. 1 three-way valve, so as to switch the flow end of the organic amine material inside the outlet pipe 372 through the No. 1 three-way valve, and then directly export the sucked organic amine material through the material change pipe 374, and cooperate with the injection of the organic amine material through the feed port to form the replacement of the organic amine material, thereby improving the capture effect of the capture device; The inside of the circulation cylinder 371 is slidably connected to a piston plate 375 through a sealing sleeve, and the inside of the piston plate 375 is provided with a plurality of openings, and the insides of the plurality of openings are all provided with a one-way valve sheet 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 driving shaft. The electric telescopic rod 377 is connected to an external power source and a control switch, and is used to drive the piston plate 375 to reciprocate up and down through the driving shaft. The upward movement of the piston plate 375 can form a negative pressure state at the bottom of the circulation cylinder 371, and then the organic amine material at the bottom of the tank body 31 can be extracted through the suction pipe 373. A one-way valve plate 376 is provided inside the piston plate 375, so that when the piston plate 375 moves downward, the organic amine material extracted below it can enter the top of the piston plate 375 through the opening; In combination with the upward movement of the piston plate 375 , not only can a secondary suction work be performed, but the organic amine material sucked in the previous round can also be discharged into the air permeable frame 32 through the outlet pipe 372 , thereby forming a circulation and diversion work of the organic amine material inside the tank body 31 .

[0022] See attached Figures 7 to 11 The secondary absorption assembly 4 includes an absorption cylinder 41 fixed to the bottom of the frame frame 1 through a bracket, both ends of the absorption cylinder 41 are rotatably connected to a rotation shaft 42, a ventilation cylinder 43 with an opening on the top is fixedly connected between the two rotation shafts 42, and both sides of the inner surface of the absorption cylinder 41 are provided with raised isolation blocks; A ventilating cylinder 43 is fixedly connected between the two rotating shafts 42. When one of the rotating shafts 42 is driven to rotate by an external motor, the other rotating shaft 42 can be used to drive the ventilating cylinder 43 to rotate, thereby turning the adsorbed material, thereby increasing the contact range of the adsorbed material and increasing the adsorption strength. The top of the air cylinder 43 is set to an open shape, which is convenient for the staff to add the adsorption material into the air cylinder 43. When the opening of the air cylinder 43 is rotated to the bottom, the adsorption material can be discharged, thus forming a replacement work of the adsorption material; The two sides of the inner surface of the absorption cylinder 41 are provided with raised isolation blocks, which not only facilitates the rotation support of the ventilation cylinder 43 through the two raised isolation blocks, but also ensures that the gas inside the absorption cylinder 41 must enter the interior of the ventilation cylinder 43 for adsorption; In this embodiment, the adsorbent material inside the air cylinder 43 is activated carbon particles or zeolite; The bottom of the absorption cylinder 41 is fixedly connected to a material guide frame 44, and a baffle is provided at the bottom of the material guide frame 44. One end of the exhaust pipe 33 is connected to the inside of the material guide frame 44, and the exhaust pipe 33 is connected to a No. 1 exhaust pipe 36 through a No. 2 three-way valve. The material guide frame 44 is provided to guide out the saturated adsorption material, and one end of the exhaust pipe 33 is connected to the interior of the material guide frame 44, so that the gas subjected to the primary adsorption treatment is discharged to the interior of the absorption cylinder 41 through the exhaust pipe 33, and the gas contacts the adsorption material inside the breathable cylinder 43, thereby forming a secondary adsorption of carbon dioxide; The exhaust pipe 33 is connected to a first outlet pipe 36 through a second three-way valve, so that after the primary absorption assembly 3 completely processes the carbon dioxide gas, it can be directly discharged through the first outlet pipe 36; The top of the absorption cylinder 41 is fixedly connected to a material injection frame 45, and a cover plate 46 is detachably mounted on the top of the material injection frame 45, and a second air outlet pipe 47 is mounted on the cover plate 46; The provision of the injection frame 45 makes it convenient for the staff to place the adsorbent material into the air cylinder 43 . The injection frame 45 is sealed by the cover plate 46 , and the gas after the secondary absorption treatment can be discharged through the second gas outlet pipe 47 on the cover plate 46 .

[0023] A method for using a device for capturing carbon dioxide generated by thermally activated coal gangue comprises the following steps: S1, connect the exhaust port of the coal gangue thermal activation calcination with the air inlet of the heat exchanger 2, perform heat exchange treatment on the gas through the heat exchanger 2, and discharge the heat-exchanged gas into the tank 31 of the primary absorption component 3 through the gas injection pipe 23, and fully contact the gas through the built-in organic amine to form carbon dioxide adsorption work; S2, by starting the circulation drive member 37 in the primary absorption assembly 3, the organic amine inside the tank body 31 is pressurized and circulated to increase the contact strength and contact range between the gas and the organic amine, and finally the gas captured by the carbon dioxide is discharged; S3, detecting the carbon dioxide content of the gas after the carbon dioxide is captured in S2; When the discharged gas meets the emission standards, it is discharged to the next round of 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 adsorption material built into the secondary absorption component 4; S4. The driving end of the circulation driving component 37 is connected to the secondary absorption component 4 through transmission. When the organic amine inside the tank body 31 is circulated and pressurized by the circulation driving component 37, the absorption material built into the secondary absorption component 4 is disturbed simultaneously to increase the contact range between the gas and the absorption material, and finally the gas captured for the second time is discharged to the next round of gas treatment area.

[0024] Embodiment 2: Based on embodiment 1, the difference is that; See attached Figure 6 and Fig. 9 The air-permeable cylinder 43 is provided with a rotating member 411 for rotating and driving the two rotating shafts 42; By setting the rotating member 411, the two rotating shafts 42 can be driven to rotate, and then the breathable cylinder 43 can be driven to rotate in a shaking manner, thereby turning over the built-in adsorption material, thereby increasing the contact strength between the adsorption material and the gas, and by moving the opening on the breathable cylinder 43 to the bottom, the adsorption material inside the breathable cylinder 43 can be guided downward and guided out through the material guide frame 44. By setting the injection frame 45, the adsorption material can be added, and it has a good material replacement function; The rotating member 411 includes a gear 4111 fixed to the outer surfaces of the two rotating shafts 42. The bottom of the inner wall of the rack frame 1 is slidably connected to a U-shaped sliding frame 4113 through two guide rods 4112. Both ends of the U-shaped sliding frame 4113 are fixedly connected to a toothed plate frame 4114 meshing 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 through a latch member 4115. The length of the two toothed plate frames 4114 is set to only drive the gear 4111 to rotate 20-50 degrees, so that when the two toothed plate frames 4114 reciprocate up and down, they can drive the gear 4111 to rotate forward and reverse at an angle of 20-50, thereby driving the adsorption material inside the breathable cylinder 43 to shake left and right, thereby improving the contact between the gas inside the absorption cylinder 41 and the adsorption material, improving its carbon dioxide capture effect, and effectively utilizing the driving force of the circulating drive member 37 in the primary absorption component 3, so that the primary absorption component 3 and the secondary absorption component 4 synchronously drive the adsorption material, thereby enhancing the energy saving and environmental protection of the capture equipment, and having good energy saving and environmental protection performance.

[0025] Embodiment 3: Based on embodiment 2, the difference is that; See attached Fig.10 and Fig.11 , heat collecting chambers 48 are provided on both sides of the air cylinder 43, and a plurality of heat exchange tubes 49 communicating with the interiors of the two heat collecting chambers 48 are fixedly connected to the interior of the air cylinder 43, the two rotating shafts 42 are hollow, and the two rotating shafts 42 are respectively communicated with the interiors of the two heat collecting chambers 48, one end of the air cylinder 43 is fixedly connected with 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; In this embodiment, since carbon dioxide is an acidic gas, it is easily adsorbed on the surface of a slightly alkaline material; the adsorbent material inside the air cylinder 43 is an alkaline metal such as Na 2 O.K 2 O, CaO, MgO and Al 2 O 3 , 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; The two heat collecting chambers 48 are fixedly connected through a plurality of heat exchange tubes 49, so that the heat source inside one heat collecting chamber 48 can flow to the other heat collecting chamber 48 through the plurality of heat exchange tubes 49, and heat the alkaline metal inside the air tube 43 through the plurality of heat exchange tubes 49, thereby increasing the adsorption strength of the alkaline metal.

[0026] The heat transfer port of the heat exchanger 2 is fixedly connected to the interior of the rotating sleeve 410 through the heating pipe 21, and the heating pipe 21 is connected to the recovery pipe 22 through a No. 3 three-way valve; The heat conduction port of the heat exchanger 2 is fixedly connected with the interior of the rotating sleeve 410 through the heating tube 21, so that the gas after heat exchange of the heat exchanger 2 is directly discharged to the interior of the rotating sleeve 410, and then discharged to one of the heat collecting chambers 48 through the rotating sleeve 410. The two heat collecting chambers 48 are connected through a plurality of heat exchange tubes 49, so that the gas inside the heat collecting chamber 48 can enter another heat collecting chamber 48 through the plurality of heat exchange tubes 49. Through the arrangement of the plurality of heat exchange tubes 49, the alkaline metal inside the breathable cylinder 43 can be heated, and the clockwise and counterclockwise shaking of the breathable cylinder 43 can further improve the uniformity of heating, thereby improving the adsorption of carbon dioxide by the alkaline metal, and increasing the carbon dioxide capture effect. The gas after heat exchange is recovered to the boiler through another rotating shaft 42 for waste heat recovery. By setting the recovery pipe 22, when there is no need to heat the adsorption material, the heat after heat exchange in the heat exchanger 2 can be directly recovered to the boiler for waste heat recovery.

[0027] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for capturing carbon dioxide generated by thermally activated coal gangue, comprising a frame (1), characterized in that: A heat exchanger (2) and a capture mechanism are respectively arranged inside the rack frame (1); The capture mechanism comprises a primary absorption component (3) for absorbing carbon dioxide generated in the activation process by means of an organic amine, 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 via a pipeline; The primary absorption assembly (3) comprises a tank body (31) fixed to the inner bottom of the frame (1), the interior of the tank body (31) is filled with organic amine, and the outer surface of the tank body (31) is provided with a circulation driving member (37) for pressurizing and circulating the organic amine in the tank body (31) and for disturbing the absorption material in the secondary absorption assembly (4), and the driving end of the circulation driving member (37) is detachably connected to the secondary absorption assembly (4); The air inlet of the heat exchanger (2) is connected to the external coal gangue calcination exhaust port, the air outlet of the heat exchanger (2) is connected to the inner bottom of the tank body (31) through the air injection pipe (23), and the heat conduction port of the heat exchanger (2) is connected to the secondary absorption component (4) through the heating pipe (21).

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

3. The device for capturing carbon dioxide generated by thermally activated coal gangue according to claim 1, characterized in that: The circulation drive member (37) comprises 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 with an outlet pipe (372) and a suction pipe (373), both of which are installed with a one-way control valve, the outlet pipe (372) is connected to a material exchange pipe (374) via a No. 1 three-way valve, and a feeding port is installed on the outer surface of the tank body (31); The interior of the circulation cylinder (371) is slidably connected to a piston plate (375) via a sealing sleeve, and a plurality of openings are provided inside the piston plate (375), and a one-way valve plate (376) is provided inside each of the plurality of openings. The outer surface of the tank body (31) is fixedly connected to an electric telescopic rod (377) via a bracket, and the telescopic end of the electric telescopic rod (377) is fixedly connected to the top of the piston plate (375) via a driving shaft.

4. The device for capturing carbon dioxide generated by thermally activated coal gangue according to claim 2, characterized in that: The secondary absorption assembly (4) comprises an absorption cylinder (41) fixed to the inner bottom of the frame frame (1) by a bracket, both ends of the absorption cylinder (41) are rotatably connected to a rotation shaft (42), a ventilation cylinder (43) with an opening on the top is fixedly connected between the two rotation shafts (42), and both sides of the inner surface of the absorption cylinder (41) are provided with raised isolation blocks; The bottom of the absorption cylinder (41) is fixedly connected to a material guide frame (44), and a baffle is provided at the bottom of the material guide frame (44) for being pulled out; one end of the exhaust pipe (33) is connected to the interior of the material guide frame (44); and the exhaust pipe (33) is connected to a No. 1 exhaust pipe (36) via a No. 2 three-way valve; The top of the absorption cylinder (41) is fixedly connected to a material injection frame (45), and a cover plate (46) is detachably mounted on the top of the material injection frame (45), and a second air outlet pipe (47) is mounted on the cover plate (46).

5. The device for capturing carbon dioxide generated by thermally activated coal gangue according to claim 4, characterized in that: The ventilation cylinder (43) is provided with a rotating member (411) for driving the two rotating shafts (42) to rotate; The rotating member (411) comprises a gear (4111) fixed to the outer surfaces of the two rotating shafts (42); the bottom of the inner wall of the rack 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 a toothed plate frame (4114) meshing 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 latch member (4115).

6. The device for capturing carbon dioxide generated by thermally activated coal gangue according to claim 5, characterized in that: Heat collecting cavities (48) are provided inside both sides of the air permeable cylinder (43), and a plurality of heat exchange tubes (49) communicating with the interiors of the two heat collecting cavities (48) are fixedly connected inside the air permeable cylinder (43). The two rotating shafts (42) are hollow, and the two rotating shafts (42) are respectively connected with the interiors of the two heat collecting cavities (48). One end of the air permeable cylinder (43) is fixedly connected with a rotating sleeve (410) via a bracket, and the rotating sleeve (410) is rotatably connected to one end of one of the rotating shafts (42).

7. The device for capturing carbon dioxide generated by thermally activated coal gangue according to claim 6, characterized in that: The heat conduction port of the heat exchanger (2) is fixedly connected to the interior of the rotating sleeve (410) via a heating pipe (21), and a recovery pipe (22) is connected to the heating pipe (21) via a No. 3 three-way valve.

8. A method for using the device for capturing carbon dioxide generated by thermally activated coal gangue as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: S1, connecting the exhaust port of the coal gangue thermal activation calcination to the air inlet of the heat exchanger (2), performing heat exchange treatment on the gas through the heat exchanger (2), and discharging the heat-exchanged gas into the tank (31) of the primary absorption component (3) through the gas injection pipe (23), so that the built-in organic amine is fully in contact with the gas to form a carbon dioxide adsorption process; S2, by starting the circulation drive member (37) in the primary absorption assembly (3), the organic amine inside the tank body (31) is pressurized and circulated to increase the contact strength and contact range between the gas and the organic amine, and finally the gas captured by the carbon dioxide is discharged; S3, detecting the carbon dioxide content of the gas after the carbon dioxide is captured in S2; When the discharged gas meets the emission standards, it is discharged to the next round of 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 adsorption material built into the secondary absorption component (4); S4, the driving end of the circulation driving member (37) is connected to the secondary absorption assembly (4) by transmission, and when the organic amine inside the tank body (31) is circulated and pressurized by the circulation driving member (37), the absorption material inside the secondary absorption assembly (4) is disturbed simultaneously to increase the contact range between the gas and the absorption material, and finally the gas after the secondary capture is discharged to the next round of gas treatment area.

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