Rotary high-temperature steel slag carbon sequestration reaction device

Abstract

The utility model provides a rotary high-temperature steel slag carbon sequestration reaction device which is characterized in that a flue gas distributor is connected with the inner side of a reaction tank shell through welding, the flue gas distributor is communicated with a rotary joint, one end of the rotary joint is a fixed end, the other end of the rotary joint is a rotary end, and hard connecting pipes are arranged at the two ends of the rotary joint; the fixed end of the rotary joint is connected with a gas inlet pipe and a gas outlet pipe of the compressor through hard connecting pipes, the rotary end of the rotary joint penetrates through the end part of the reaction tank body through the hard connecting pipes and is connected with the end part of the flue gas distributor, and the gas inlet pipe and the gas outlet pipe of the compressor are both connected with the gas supply pipeline and the rotary joint; the rotation of the reaction tank body shell is independently set by using the rotary joint, so that the gas supply hose is not damaged in the rotation process, redundant leakage is prevented, the long-time stable operation of the reaction tank body is ensured, and the environmental protection performance is improved.

Description

Technical Field

[0001] This article belongs to the technical field of steel slag carbon fixation reactor, and specifically relates to a rotating high-temperature steel slag carbon fixation reaction device. Background Art

[0002] The existing steel slag utilization rate is only about 10%. The utilization methods of steel slag and the factors restricting the utilization rate of steel slag can be roughly divided into internal circulation and external circulation. The internal circulation refers to the utilization of steel slag within the production, as the raw material of sintered ore and the return material of steelmaking, and the external circulation of steel slag mainly refers to its use in construction materials.

[0003] The main reason limiting the resource utilization of steel slag is that it contains a large amount of unstable free calcium oxide. On the one hand, the high free calcium oxide content in steel slag makes the steel slag prone to expansion and powdering and poor volume stability, which in turn leads to a series of quality problems such as pavement expansion and cracking when the steel slag is used in road projects. On the other hand, the reduction effect of free calcium oxide in steel slag is unstable and it is difficult to maintain a stable low level. At present, carbon dioxide is mainly used to react with free calcium oxide in steel slag to form calcium carbonate, which can effectively improve the stability of steel slag and expand the utilization field of steel slag, while also reducing carbon dioxide emissions. It has the dual benefits of carbon dioxide emission reduction and solid waste resource recovery. Therefore, carbon dioxide is now used to fix carbon in the reaction tank of steel slag.

[0004] Because steel slag is in irregular small shapes, the steel slag carbon fixation reaction tank must use an extra-large rotary kettle to allow the steel slag to fully contact with carbon dioxide. In order to ensure the efficiency of turning and the convenience of feeding and discharging, a stir-frying feeding plate is also set inside the rotary kettle to perform turning and feeding and discharging operations.

[0005] The patent "A Rotary Autoclave" in the prior art, patent number; CN205274503U, provides a rotary autoclave, which relates to the field of autoclaves. The rotary autoclave includes an inlet and outlet pipe, an autoclave shell and a driving device; a forward guide spiral and a reverse guide spiral are arranged on the inner wall of the autoclave shell; the forward guide spiral and the reverse guide spiral are arranged symmetrically; an inlet and outlet port is arranged at the head end of the autoclave shell; the inlet and outlet port is located at the center of the autoclave shell; the inlet and outlet pipe and the inlet and outlet port are detachably plugged; the driving device is used to drive the autoclave shell to rotate. The rotary autoclave of this application solves the technical problem of serious dust pollution when the autoclave is unloaded in the prior art.

[0006] The patent "Conical Rotating Autoclave" in the prior art, patent number; CN204447946U discloses a conical rotating autoclave, which relates to an autoclave, and solves the problem that the existing autoclave cannot use powdered materials as raw materials. The conical rotating autoclave includes a kettle body with a feed port at one end and a discharge port at the other end, wherein the kettle body at the feed port end is conical; wherein an exhaust port is opened in the middle position of the kettle body at the feed port end, and a heat transfer oil inlet and outlet, a safety valve, a temperature gauge and a pressure gauge are provided on the kettle body at the discharge port end, and an oil transfer heat pipe is provided inside the kettle body; a gear ring is fixed on the outside of the kettle body, and a rotating chain matching the gear ring is installed on the gear ring, and the rotating chain is driven to rotate by a motor. The utility model has a simple structure and can be widely used in the production of industrial by-product powdered raw materials or natural raw materials crushed into powder. It is simple to operate and highly efficient and energy-saving.

[0007] In the above-mentioned prior art, a driving wheel and a supporting wheel are arranged in a ring outside the reaction tank body, so that the driving wheel rotates the large reaction tank body as a whole, and a hinge is arranged inside the reaction tank body to achieve internal circulation stirring.

[0008] However, in the prior art, the carbon dioxide gas pipe is connected externally to the outside of the reaction tank body to supply gas to the inside. Although this form has a simple structure and is easy to produce, the direct connection of the gas pipe to the rotating reaction tank body will drive the gas pipe to rotate together. Such long-term operation will cause the gas pipe to twist and knot, and even reduce the strength and toughness of the gas pipe, thereby damaging the gas pipe. Usually, the carbon dioxide remaining in the reaction tank body after carbon fixation is directly discharged through the exhaust port. However, since the carbon content in the steel slag itself is not constant, the amount of carbon dioxide remaining in the reaction tank body cannot be estimated. It is sometimes more and sometimes less. When the carbon dioxide content is high, direct discharge not only wastes carbon dioxide gas, but also affects the surrounding air. Utility Model Content

[0009] In order to solve the above problems, this paper proposes a rotating high-temperature steel slag carbon fixation reaction device, the device includes inlet and outlet pipelines, a high-temperature centrifugal fan, a roller, a frequency conversion motor, a reducer, a supporting wheel, a blocking wheel and a reaction tank body, the outer side of the reaction tank body is provided with a driving wheel assembly and a supporting wheel assembly, the inner side of the reaction tank body is provided with a frying plate and a feeding plate, one end of the reaction tank body is provided with a discharge port, the other end of the reaction tank body is provided with a flue gas distributor on the inner side, the flue gas distributor is connected to the inner side of the reaction tank body shell by welding, the flue gas distributor is connected to the rotary joint, one end of the rotary joint is a fixed end, the other end of the rotary joint is a rotating end, and both ends of the rotary joint are provided with There is a hard connecting pipe, and the fixed end of the rotary joint is connected to the air inlet pipe and the air outlet pipe of the compressor through the hard connecting pipe. The rotating end of the rotary joint passes through the hard connecting pipe to be connected to the end of the flue gas distributor. The air inlet pipe and the air outlet pipe of the compressor are connected to the air supply pipe and the rotary joint. The rotation of the reaction tank shell is independently set by using the rotary joint, thereby ensuring that the air supply hose will not be damaged during the rotation process, and the circulating hose can facilitate the reuse of excess carbon dioxide inside the reaction tank or directly return it to the air supply pipe to prevent excess leakage, thereby ensuring the long-term stable operation of the reaction tank and improving environmental protection performance.

[0010] The reaction tank body is shaped as a horizontal cylindrical cavity kettle, one end of the reaction tank body is provided with an arc sealing end face, the other end of the reaction tank body is conically necked and provided with a discharge port, both ends of the reaction tank body are outwardly provided with support wheel assemblies, the middle part of the reaction tank body is outwardly provided with a driving wheel assembly, a flue gas distributor is provided in the center of the arc sealing end face of the reaction tank body, and a feeding port is provided in the middle part of the outer side of the reaction tank body. The horizontal reaction tank body is convenient for the steel slag to be fully stirred and tumbled for carbon fixation, and it is also convenient for feeding and discharging materials through the frying feed plate, and the driving wheel assembly and the support wheel assembly can facilitate the stable overall rotation of the reaction tank body.

[0011] The smoke distributor is a square diffusion type distributor, which is arranged at the center of the stir-frying feeding plate. The carbon dioxide is fully filled into the interior of the reaction tank through the smoke distributor, and the smoke distributor can also transmit the gas to the outside.

[0012] A mobile feeding mechanism is provided on the outer side of the feed port, and the mobile feeding mechanism includes a feed hopper and a mobile hopper bracket. The mobile hopper bracket is in the shape of a rectangular frame profile bracket, and a universal wheel is provided at the bottom of the mobile hopper bracket. A feed hopper is provided vertically downward on the top surface of the mobile hopper bracket. The feed hopper is connected to the feed port, and the inner side contour dimension of the mobile hopper bracket is larger than the outer contour dimension of the reaction tank body. The feed hopper can be moved from the outside to the feed port by the mobile feeding mechanism, which is convenient for the conveyor belt to dump the slag into the feed hopper. The feed hopper can also be moved out during the operation of the reaction tank body to ensure that there will be no interference from other objects during the rotation.

[0013] The fixed end and the rotating end at both ends of the rotary joint are connected to each other, the hard pipe of the rotary end is connected to the through gap at the end of the shell of the reaction tank body by sealing welding, a pressure relief valve is provided on the outside of the hard pipe of the rotary end, and a temperature gauge and a pressure gauge are provided on the outside of the hard pipe of the fixed end. Through the cooperation of the fixed end and the rotating end of the rotary joint, the rotating end can rotate together with the reaction tank body, and the fixed end can fix the hose. Since the rotary joint itself is a conducting tube, a temperature gauge and a pressure gauge are provided on the outside of the fixed end of the rotary joint, which can stably and clearly observe the internal parameters during the rotation of the reaction tank body.

[0014] The air inlet and outlet of the compressor are connected to the air supply pipeline and the rotary joint through a one-to-two hose. The branches of the hose connecting the air supply pipeline and the rotary joint are provided with solenoid valves. The compressor and the drive wheel assembly are connected to the control cabinet through cables. The air inlet and outlet of the compressor can be connected to the inside of the reaction tank and the air supply pipeline through the one-to-two hose, thereby facilitating gas recovery, improving utilization rate, and being low-carbon and environmentally friendly.

[0015] The frying plate is an annular arc plate, which is equidistantly arranged between the feeding plates laterally, and the outer edge of the frying plate is connected to the inner surface of the reaction tank shell. The feeding plate is a beveled auger, and the shape of the feeding plate is a spiral auger. The outer edge of the feed plate is connected to the inner surface of the reaction tank shell. The frying feed plate is directly arranged inside the reaction tank, so that the internal slag can be fed in and out during the forward and reverse rotation of the reaction tank.

[0016] Beneficial effects:

[0017] By using a rotating joint to independently set the rotation of the reaction tank shell, the gas supply hose will not be damaged during the rotation. The carbon dioxide concentrated around the flue gas distributor inside the reaction tank is re-drawn into the compressor, and the excess carbon dioxide inside the reaction tank can be reused or directly returned to the gas supply pipeline through the circulating hose to prevent excess leakage, thereby ensuring the long-term stable operation of the reaction tank and improving environmental protection performance.

[0018] The horizontal reaction tank body facilitates the sufficient stirring and tumbling of the steel slag for carbon fixation, and also facilitates the loading and unloading of materials through the stir-frying feeding plate, while the driving wheel assembly and the supporting wheel assembly facilitate the stable overall rotation of the reaction tank body.

[0019] The carbon dioxide is fully filled into the interior of the reaction tank through the flue gas distributor, and the flue gas distributor can also transmit the gas to the outside.

[0020] By moving the feeding mechanism, the feeding hopper can be moved from the outside to the feeding port, which is convenient for the conveyor belt to dump the slag into the feeding hopper. The feeding hopper can also be moved out during the operation of the reaction tank to ensure that there will be no interference from other objects during the rotation.

[0021] Through the cooperation of the fixed end and the rotating end of the rotary joint, the rotating end can rotate together with the reaction tank body, and the fixed end can fix the hose. Since the rotary joint itself is a conducting tube, a temperature gauge and a pressure gauge are set on the outside of the fixed end of the rotary joint, which can stably and clearly observe the internal parameters during the rotation of the reaction tank body.

[0022] The air inlet and outlet of the compressor can be connected to the interior of the reaction tank and the air supply pipeline through a one-to-two hose, thereby facilitating gas recovery, improving utilization rate, and being low-carbon and environmentally friendly.

[0023] By directly arranging the frying material feeding plate inside the reaction tank body, the internal steel slag can be fed in and out during the forward and reverse rotation of the reaction tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of a rotating high-temperature steel slag carbon fixation reaction device;

[0025] In the figure; 1. compressor, 2. air inlet, 3. discharge port, 4. rotary joint, 5. flue gas distributor, 6. frying material feed plate, 7. reaction tank shell, 8. driving wheel assembly, 9. supporting wheel assembly, 10. discharge port, 11. feed port, 12. feed hopper, 13. mobile hopper bracket, 14. control cabinet, 15. air supply pipeline. DETAILED DESCRIPTION

[0026] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0027] Compressor 1, air inlet 2, discharge port 3, rotary joint 4, flue gas distributor 5, frying material feeding plate 6, reaction tank shell 7, driving wheel assembly 8, supporting wheel assembly 9, discharge port 10, feed port 11, feed hopper 12, mobile hopper bracket 13, control electric cabinet 14, air supply pipeline.

[0028] like Figure 1 As shown;

[0029] A rotating high-temperature steel slag carbon fixation reaction device, the device includes inlet and outlet pipelines, a high-temperature centrifugal fan, a roller, a frequency conversion motor, a reducer, a supporting wheel, a blocking wheel and a reaction tank body, the outer side of the reaction tank body is provided with a driving wheel assembly 8 and a supporting wheel assembly 9, the inner side of the reaction tank body is provided with a frying plate and a feeding plate, one end of the reaction tank body is provided with a discharge port 10, the inner side of the other end of the reaction tank body is provided with a flue gas distributor 5, the flue gas distributor 5 is connected to the inner side of the reaction tank body shell by welding, the flue gas distributor 5 is connected to the rotary joint 4, one end of the rotary joint 4 is a fixed end, the other end of the rotary joint 4 is a rotating end, both ends of the rotary joint 4 are provided with a hard pipe, the fixed end of the rotary joint 4 The end is connected to the air inlet pipe and the air outlet pipe of the compressor 1 through a hard pipe, the rotating end of the rotary joint 4 passes through the hard pipe to pass through the end of the reaction tank body and is connected to the end of the flue gas distributor 5, the air inlet pipe and the air outlet pipe of the compressor 1 are connected to the air supply pipe 15 and the rotary joint 4, the reaction tank body is in the shape of a horizontal cylindrical cavity kettle, one end of the reaction tank body is provided with an arc sealing end face, the other end of the reaction tank body is conically necked and provided with a discharge port 10, the two ends of the reaction tank body are externally provided with support wheel assemblies 9, the middle part of the reaction tank body is externally provided with a driving wheel assembly 8, the center of the arc sealing end face of the reaction tank body is provided with a flue gas distributor 5, the middle of the outer side of the reaction tank body is provided with a feed port 11, and the flue gas distributor The device 5 is a square diffusion distributor, and the smoke distributor 5 is arranged at the center of the stir-frying feeding plate 6. A mobile feeding mechanism is arranged on the outside of the feeding port 11, and the mobile feeding mechanism includes a feeding hopper 12 and a mobile hopper bracket 13. The mobile hopper bracket 13 is in the shape of a rectangular frame profile bracket, and a universal wheel is arranged at the bottom of the mobile hopper bracket 13. The top surface of the mobile hopper bracket 13 is vertically downwardly provided with a feeding hopper 12, and the feeding hopper 12 is connected to the feeding port 11. The fixed end and the rotating end at both ends of the rotary joint 4 are interconnected, and the hard pipe of the rotating end is connected to the through gap at the end of the shell of the reaction tank body by sealing welding. A pressure relief valve is arranged on the outside of the hard pipe of the rotating end, and the fixed end and the rotating end of the rotary joint 4 are connected to each other. A temperature gauge and a pressure gauge are provided on the outside of the hard pipe at the end. The air inlet 2 and the air outlet 3 of the compressor 1 are connected to the air supply pipe 15 and the rotary joint 4 through a one-to-two hose. The branches of the hose connecting the air supply pipe 15 and the rotary joint 4 are provided with solenoid valves. The compressor 1 and the driving wheel assembly 8 are connected to the control cabinet 14 through cables. The inner contour size of the movable hopper bracket 13 is larger than the outer contour size of the reaction tank body. The frying plate is an annular arc plate. The frying plate is equidistantly arranged between the feed plates in the horizontal direction. The outer edge of the frying plate is connected to the inner surface of the reaction tank shell. The feed plate is a beveled auger. The shape of the feed plate is a spiral auger. The outer edge of the feed plate is connected to the inner surface of the reaction tank shell.

[0030] Implementation examples;

[0031] Before the reaction tank is treated with slag, the feed hopper 12 is first moved to above the feed port 11 by moving the hopper support 13, the feed is connected to the feed port 11, and the slag is poured into the reaction tank.

[0032] After the slag is loaded, the mobile hopper bracket 13 is removed, the driving wheel assembly 8 is started, the reaction tank body is rotated forward and reversely to spread the slag evenly, and then the compressor 1 is started to inject the carbon dioxide inside the air supply pipe 15 into the reaction tank body. While injecting the carbon dioxide, the driving wheel assembly 8 drives the reaction tank body to rotate, and the internal slag is rolled up and stirred inside the reaction tank body, so that the carbon dioxide and the steel slag are fully in contact to fix the carbon.

[0033] During the operation of the reaction tank, carbon dioxide enters the flue gas distributor 5 through the rotary joint 4 and is distributed. The cooperation between the rotating end and the fixed end of the rotary joint 4 allows the hose connected to the fixed end to remain stationary while the rotating end rotates with the reaction tank, thereby protecting the hose.

[0034] During the carbon fixation operation, the carbon dioxide concentrated around the flue gas distributor inside the reaction tank can be drawn back into the compressor 1 through the solenoid valve on the hose, and then injected into the reaction tank again to make full use of the carbon dioxide.

[0035] After carbon fixation is completed, the remaining carbon dioxide in the reaction tank can be pumped back into the gas supply pipeline 15 through the solenoid valve on the hose.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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. A rotating high-temperature steel slag carbon fixation reaction device, the device comprises an inlet and outlet pipeline, a high-temperature centrifugal fan, a roller, a frequency conversion motor, a reducer, a supporting wheel, a blocking wheel and a reaction tank body, a driving wheel assembly and a supporting wheel assembly are arranged on the outside of the reaction tank body, a frying plate and a feeding plate are arranged on the inside of the reaction tank body, and a discharge port is arranged at one end of the reaction tank body, characterized in that: A flue gas distributor is provided on the inner side of the other end of the reaction tank body, and the flue gas distributor is connected to the inner side of the reaction tank body shell by welding. The flue gas distributor is communicated with the rotary joint, one end of the rotary joint is a fixed end, and the other end of the rotary joint is a rotating end. Both ends of the rotary joint are provided with hard pipes, and the fixed end of the rotary joint is connected to the air inlet pipe and the air outlet pipe of the compressor through the hard pipe, and the rotating end of the rotary joint passes through the end of the reaction tank body and is connected to the end of the flue gas distributor through the hard pipe, and the air inlet pipe and the air outlet pipe of the compressor are connected to the air supply pipe and the rotary joint.

2. A rotating high-temperature steel slag carbon fixation reaction device according to claim 1, characterized in that: The reaction tank body is shaped as a transverse cylindrical cavity kettle, one end of the reaction tank body is provided with an arc sealing end face, the other end of the reaction tank body is conically necked and provided with a discharge port, the two ends of the reaction tank body are outwardly provided with support wheel assemblies, the middle part of the reaction tank body is outwardly provided with a driving wheel assembly, a flue gas distributor is provided in the center of the arc sealing end face of the reaction tank body, and a feed port is provided in the middle part of the outer side of the reaction tank body.

3. The rotating high-temperature steel slag carbon fixation reaction device according to claim 1 is characterized in that: The fume distributor is a square diffusion type distributor, and the fume distributor is arranged at the center of the frying material feeding plate.

4. The rotating high-temperature steel slag carbon fixation reaction device according to claim 2, characterized in that: A mobile feeding mechanism is provided on the outer side of the feed port, and the mobile feeding mechanism includes a feed hopper and a mobile hopper bracket. The mobile hopper bracket is in the shape of a rectangular frame profile bracket, and a universal wheel is provided at the bottom of the mobile hopper bracket. A feed hopper is provided vertically downward on the top surface of the mobile hopper bracket, and the feed hopper is connected to the feed port.

5. The rotating high-temperature steel slag carbon fixation reaction device according to claim 1, characterized in that: The fixed end and the rotating end at both ends of the rotary joint are connected to each other, the hard pipe at the rotating end is connected to the through gap at the end of the reaction tank shell by sealing welding, a pressure relief valve is provided on the outside of the hard pipe at the rotating end, and a temperature gauge and a pressure gauge are provided on the outside of the hard pipe at the fixed end.

6. The rotating high-temperature steel slag carbon fixation reaction device according to claim 1, characterized in that: The air inlet and the air outlet of the compressor are connected to the air supply pipeline and the rotary joint through a one-to-two hose, and the branches of the hose connecting the air supply pipeline and the rotary joint are provided with solenoid valves.

7. The rotating high-temperature steel slag carbon fixation reaction device according to claim 2, characterized in that: The compressor and the driving wheel assembly are connected to the control cabinet via cables.

8. The rotating high-temperature steel slag carbon fixation reaction device according to claim 4, characterized in that: The inner contour dimension of the movable hopper support is larger than the outer contour dimension of the reaction tank body.

9. The rotating high-temperature steel slag carbon fixation reaction device according to claim 1, characterized in that: The frying plate is an annular arc-shaped plate, which is arranged between the feed plates at equal distances in the horizontal direction, and the outer edge of the frying plate is connected to the inner surface of the reaction tank shell.

10. The rotating high-temperature steel slag carbon fixation reaction device according to claim 1, characterized in that: The feed plate is a beveled auger, and the shape of the feed plate is a spiral auger. The outer edge of the feed plate is connected to the inner surface of the reaction tank shell.

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