Steel slag carbon sequestration reaction tank

Abstract

The utility model discloses a steel slag carbon sequestration reaction tank body. The reaction tank body is a horizontal pressure container, an air inlet pipe opening and an exhaust pipe opening are formed in the reaction tank body, and an exhaust valve is arranged at the exhaust pipe opening; a feeding hole and a discharging hole are formed in the reaction tank body, and sealing covers are arranged on the feeding hole and the discharging hole; a spiral plate is arranged in the reaction tank body, and the spiral plate is arranged based on the inner wall of the reaction tank body; a plurality of material frying plates are arranged in the reaction tank body, and the material frying plates are arranged on the basis of the inner wall of the reaction tank body. The reaction tank body disclosed by the utility model is applied to the steel slag carbon sequestration reaction device, and can meet the requirement of the steel slag carbon sequestration reaction device for realizing the stir-frying and stirring functions on materials (steel slag).

Description

Technical Field

[0001] The utility model relates to a carbon dioxide curing device, in particular to a steel slag carbon sequestration reaction tank body. Background Art

[0002] The steel slag generated in steelmaking is a good utilizable resource and can be used for paving roads. However, a large amount of unstable free calcium oxide is contained in the steel slag, which makes the steel slag prone to expansion and pulverization and poor volume stability, and further causes a series of quality problems such as pavement expansion and cracking when the steel slag is used in road engineering. At present, it is mainly to use carbon dioxide to react with the free calcium oxide in the steel slag to form calcium carbonate, which can not only effectively improve the stability of the steel slag, expand the utilization field of the steel slag, but also reduce the emission of carbon dioxide gas, having double benefits in terms of carbon emission reduction and solid waste resource recovery.

[0003] The current problem is that there is currently no special equipment for "fully mixing and contacting carbon dioxide gas with steel slag and using steel slag to solidify carbon dioxide gas". For this reason, it is necessary to develop a steel slag carbon sequestration reaction device, and a reaction tank body needs to be adopted in the steel slag carbon sequestration reaction device. The reaction tank body should be able to realize the function of stir-frying and agitating the material (steel slag). However, there is no reaction tank body in the prior art that can realize the above functions. Summary of the Invention

[0004] The purpose of the utility model is to provide a steel slag carbon sequestration reaction tank body. When the reaction tank body is applied to a steel slag carbon sequestration reaction device, it can meet the requirement of the steel slag carbon sequestration reaction device to realize the function of stir-frying and agitating the material (steel slag).

[0005] In order to achieve the above technical purpose, the utility model adopts the following technical scheme:

[0006] A steel slag carbon sequestration reaction tank body, the reaction tank body is a horizontal pressure vessel, and an air inlet pipe port and an exhaust pipe port are provided on the reaction tank body. An exhaust valve is arranged at the exhaust pipe port; a feed port and a discharge port are provided on the reaction tank body, and covers are configured on both the feed port and the discharge port; a spiral plate is arranged inside the reaction tank body, and the spiral plate is arranged based on the inner wall of the reaction tank body; a plurality of material frying plates are arranged inside the reaction tank body, and the material frying plates are arranged based on the inner wall of the reaction tank body.

[0007] Further, the spiral plate arranged inside the reaction tank body extends all the way to the discharge port of the reaction tank body.

[0008] Further, the air inlet pipe port is arranged at the rear end part of the reaction tank body, the exhaust pipe port is arranged at the front end part of the reaction tank body, and the central axes of the air inlet pipe port and the exhaust pipe port are coaxial with the overall central axis of the reaction tank body.

[0009] Further, the discharging port is located at the front end of the reaction tank body, and the feeding port is located on the circumferential surface of the middle part of the reaction tank body.

[0010] Further, the front end of the reaction tank body is configured as a conical head, and the rear end of the reaction tank body is configured as an elliptical head.

[0011] Further, an outer peripheral gear is arranged on the circumferential surface of the reaction tank body surrounding the outer periphery of the reaction tank body.

[0012] The reaction tank body of the present utility model has the beneficial effects compared with the prior art:

[0013] A spiral plate and a plurality of stir-frying plates are arranged in the reaction tank body. When the reaction tank body is applied to a steel slag carbon sequestration reaction device, steel slag is filled into the reaction tank body, and carbon dioxide gas is introduced into the reaction tank body. When the reaction tank body makes a fixed-axis rotation movement based on its own central axis, the stir-frying plates in the reaction tank body can repeatedly stir and agitate the steel slag, so that the steel slag in the reaction tank body is in full contact with the flue gas, and the carbon dioxide gas component in the flue gas is gradually absorbed and solidified by the steel slag, reducing the carbon dioxide gas content in the flue gas, and thus achieving the purpose of carbon reduction. Description of the Drawings

[0014] Figure 1 It is a structural schematic diagram of a steel slag carbon sequestration reaction device, in which the steel slag carbon sequestration reaction tank body of the present utility model is adopted. Specific Embodiments

[0015] The following specific embodiments are used to further illustrate the present utility model:

[0016] This embodiment provides a steel slag carbon sequestration reaction tank body, which is used to construct a steel slag carbon sequestration reaction device for solidifying the carbon dioxide gas emitted from a carbon dioxide emission source to achieve the purpose of emission reduction and carbon reduction.

[0017] In this embodiment, the carbon dioxide emission source is a certain thermal power plant, and the flue gas generated by burning coal contains a large amount of carbon dioxide gas, and the steel slag carbon sequestration reaction device is used to solidify the carbon dioxide gas in the flue gas.

[0018] See Figure 1 , a pipeline is shown above in the figure, and this pipeline is the flue 1 for discharging flue gas from the thermal power plant.

[0019] See Figure 1 , in the steel slag carbon sequestration reaction device, in addition to including the reaction tank body 2, it also includes an induced draft fan 6.

[0020] The reaction tank body 2 of this embodiment is generally cylindrical in shape, and the reaction tank body 2 is essentially a horizontal pressure vessel.

[0021] For the convenience of distinction and description, one cylindrical end of the reaction tank body 2 is called the rear end part ( Figure 1 the left end in the shown orientation), and the other cylindrical end of the reaction tank body 2 is called the front end part ( Figure 1 the right end in the shown orientation).

[0022] The reaction tank body 2 of this embodiment is generally arranged based on two support brackets 4. A roller bracket (not shown in the figure) is provided on the support bracket 4. A set of arc-arranged rollers is provided in the roller bracket. The reaction tank body 2 is placed in the roller brackets of the two support brackets 4. Based on the roller brackets, the reaction tank body 2 can perform a fixed-axis rotation movement around its own central axis.

[0023] It should be noted that the above-mentioned "roller bracket" is a mechanical structure of the prior art. For example, the mixing drum on a cement mixer truck is arranged based on a roller bracket. Based on the roller bracket, the mixing drum on the cement mixer truck can perform a fixed-axis rotation movement. Therefore, the said roller bracket can be understood without doubt by those skilled in the art. Therefore, the specific structure of the roller bracket will not be elaborated further.

[0024] It should be noted that in other embodiments, the specific arrangement form of the reaction tank body 2 is not limited to the above form of "arranged based on two support brackets 4", and it can also be other arrangement forms, as long as the reaction tank body 2 can perform a fixed-axis rotation movement around its own central axis in a horizontal state.

[0025] In addition, in order to drive the reaction tank body 2 to rotate, a power driving mechanism is also configured for the reaction tank body 2. The specific implementation form of this power driving mechanism is:

[0026] A huge outer peripheral gear 22 is arranged on the circumferential surface of the reaction tank body 2 around the periphery of the reaction tank body 2. And a driving motor 3 and a corresponding gear reduction mechanism are configured for this outer peripheral gear 22. The gear reduction mechanism is assembled with the outer peripheral gear 22 on the reaction tank body 2. In this way, by controlling the operation of the driving motor 3, the reaction tank body 2 can be driven to perform a fixed-axis rotation movement.

[0027] More specifically, an outer peripheral gear 22 is arranged on the circumferential surface of the reaction tank body 2 around the periphery of the reaction tank body 2. The outer peripheral gear 22 meshes with a small gear driven by the driving motor 3, and the meshing degree is between 60 - 80%. The driving motor 3 is assembled and connected with the gear reduction mechanism and the small gear. By controlling the operation of the driving motor 3, the reaction tank body 2 can be driven to perform a fixed-axis rotation movement.

[0028] When the reaction tank body 2 makes a fixed-axis rotation movement, its rotation axis passes through the rear end and the front end of the reaction tank body 2 at the same time.

[0029] An air inlet port 23 and an exhaust port 24 are provided on the reaction tank body 2 of the present embodiment. The air inlet port 23 is arranged at the rear end of the reaction tank body 2, and the exhaust port 24 is arranged at the front end of the reaction tank body 2. Moreover, the central axes of the air inlet port 23 and the exhaust port 24 are coaxial with the central axis of the whole reaction tank body 2 (that is, the rotation axis when the reaction tank body 2 makes a fixed-axis rotation movement). When the reaction tank body 2 makes a fixed-axis rotation movement, the air inlet port 23 and the exhaust port 24 will make a fixed-axis rotation action along with the reaction tank body 2.

[0030] The air inlet port 23 of the reaction tank body 2 is connected to the peripheral pipeline through a rotary joint 7 designed with a dynamic sealing structure and capable of withstanding a certain temperature and pressure. In this way, even if the reaction tank body 2 makes a rotation action, it does not affect the connection between the air inlet port 23 and the peripheral pipeline.

[0031] The exhaust port 24 of the reaction tank body 2 is connected to the external atmosphere, and a valve is also provided on the exhaust port 24. For the convenience of distinction and description, the valve provided on the exhaust port 24 is called the "exhaust valve". By controlling this exhaust valve, the gas in the reaction tank body 2 can be controlled to lead to the atmosphere through the exhaust port 24.

[0032] A pressure gauge and a temperature gauge are also provided at the air inlet port 23. The pressure gauge has a negative pressure scale. After the reaction is completed, during the process of pumping the flue gas back to the original flue 1, it is to strengthen the monitoring and avoid the negative pressure situation in the reaction tank body 2.

[0033] An opening is provided at the front end of the reaction tank body 2 of the present embodiment. This opening is called the discharge port 25, and this discharge port 25 is used to discharge the solid material (steel slag) in the reaction tank body 2 from the discharge port 25. A cover is provided for the discharge port 25, and this cover is set as a quick-opening blind plate structure. The cover covers the discharge port 25 to achieve the function of closing the discharge port 25, and thus the whole reaction tank body 2 can be closed. The previously mentioned exhaust port 24 is arranged on the cover.

[0034] An opening is provided on the circumferential surface in the middle of the reaction tank body 2 of the present embodiment. This opening is called the feed port 26, and this feed port 26 is used to input the external material into the reaction tank body 2 from the feed port 26. A cover is provided for the feed port 26, and this cover is set as a quick-opening blind plate structure. The cover covers the feed port 26 to achieve the function of closing the feed port 26, and thus the whole reaction tank body 2 can be closed.

[0035] In addition, for the feed inlet 26 of the reaction tank body 2, a loading rack 8 is additionally equipped. A funnel is provided on the loading rack 8. The funnel is designed and installed on pulleys and guide rails. The loading rack 8 is erected at the feed inlet 26 of the reaction tank body 2, and the funnel is aligned with the feed inlet 26. In this way, materials (steel slag) can be conveniently loaded into the reaction tank body 2 through the funnel.

[0036] Inside the reaction tank body 2 of the present embodiment, a spiral spiral plate 21 and numerous frying plates (not shown in the figure) are provided.

[0037] The spiral plate 21 is arranged based on the inner wall of the reaction tank body 2, that is, the spiral plate 21 is fixed to the inner wall of the reaction tank body 2 in a spiral shape and covers all the circumferential inner walls of the reaction tank body 2.

[0038] Furthermore, the spiral plate 21 provided in the reaction tank body 2 extends from the tank body to the discharge port 25 at the conical end of the front end of the reaction tank body 2. In this way, when the reaction tank body 2 continuously makes a forward rotation movement (the actual rotation direction depends on the spiral direction of the spiral plate 21), the materials in the reaction tank body 2 will be pushed towards the discharge port 25 and discharged from the discharge port 25.

[0039] The frying plate has a conventional plate-shaped configuration and is also arranged based on the inner wall of the reaction tank body 2, that is, the frying plate is fixed to the inner wall of the reaction tank body 2 and covers all the inner walls of the reaction tank body 2. The frying plate is arranged at the spiral gap of the spiral plate 21.

[0040] It should be noted that in the present embodiment, the front end of the reaction tank body 2 is set in a conical head configuration, and the purpose of such a setting is to facilitate the design and installation of the discharge of the spiral plate 21. The rear end of the reaction tank body 2 is set in an elliptical head configuration.

[0041] The induced draft fan 6 is used for

[0042] "extracting gas (usually carbon dioxide gas) from the flue 1 and then guiding the extracted gas into the reaction tank body 2";

[0043] Or,

[0044] "extracting gas from the reaction tank body 2 and then guiding the extracted gas into the flue 1".

[0045] Specifically,

[0046] The air inlet of the induced draft fan 6 is connected to both the "flue 1" and the "air inlet pipe 23 of the reaction tank 2" through a three-way branch pipeline, and valves are provided on the branch pipelines connecting the "flue 1" and the "air inlet pipe 23 of the reaction tank 2". In this way, by controlling the opening and closing of the valves, the source of the gas extracted by the induced draft fan 6 can be controlled.

[0047] The air outlet of the induced draft fan 6 is connected to both the "flue 1" and the "air inlet pipe 23 of the reaction tank 2" through a three-way branch pipeline, and valves are provided on the branch pipelines connecting the "flue 1" and the "air inlet pipe 23 of the reaction tank 2". In this way, by controlling the opening and closing of the valves, the destination of the gas discharged by the induced draft fan 6 can be controlled.

[0048] For the sake of convenience in description, the pipeline form of "connected by a three-way branch pipeline and provided with valves" is called a "three-way reversing pipeline". In this way, the connection relationship among the induced draft fan 6, the flue 1, and the "air inlet pipe 23 of the reaction tank 2" can be summarized as: both the air inlet and the air outlet of the induced draft fan 6 are connected to the "flue 1" and the "air inlet pipe 23 of the reaction tank 2" through the three-way reversing pipeline. The purpose of such a setting is to facilitate switching the direction of the air flow guided by the induced draft fan 6, "guiding the air flow from the flue 1 into the reaction tank 2" or "guiding the air flow from the reaction tank 2 into the flue 1" (which will be described in detail later).

[0049] It should be noted that in other embodiments, if there are no special environmental protection requirements, the air inlet of the induced draft fan 6 can also be only connected to the flue 1, and the air outlet of the induced draft fan 6 can be only connected to the "air inlet pipe 23 of the reaction tank 2", as long as it can achieve "the induced draft fan 6 extracts carbon dioxide gas from the flue 1 and transports the extracted carbon dioxide gas to the reaction tank 2 through the air inlet pipe 23 of the reaction tank 2".

[0050] The steel slag carbon sequestration reaction device further includes an operation panel 5, which is located at the equipment site and has a PLC control. All the electrical equipment in the steel slag carbon sequestration reaction device is in telecommunication connection with the operation panel 5, and all the electrical equipment can communicate with the operation panel 5 to exchange information. The operation of the entire steel slag carbon sequestration reaction device is completely controlled by the operation panel 5. For example, the start and stop of the induced draft fan 6 mentioned in this embodiment, the adjustment of the rotation direction and speed of the reaction tank 2, etc., can all be operated on the operation panel 5 through the designed and installed PLC program.

[0051] The specific operation process of the steel slag carbon sequestration reaction device is as follows:

[0052] S1. Open the cover of the feed inlet 26 of the reaction tank body 2, load the pre-prepared steel slag into the reaction tank body 2 through the feed inlet 26. During this process, a specially equipped loading rack 8 can be used to achieve the operation of loading the steel slag, and then close the cover of the feed inlet 26.

[0053] S2. By controlling the opening and closing of the valve, make the air inlet of the induced draft fan 6 communicate with the flue 1, and the air outlet of the induced draft fan 6 communicate with the air inlet pipe orifice 23 of the reaction tank body 2.

[0054] S3. Open the exhaust valve at the exhaust pipe orifice 24, start and operate the induced draft fan 6. The induced draft fan 6 continuously introduces the flue gas in the flue 1 into the reaction tank body 2. During this process, the gas (the gas that has been processed before) in the reaction tank body 2 is discharged to the atmosphere through the exhaust pipe orifice 24.

[0055] S4. After the gas in the reaction tank body 2 has been completely replaced by the newly added flue gas (smoke emerges from the exhaust pipe orifice 24), shut down the induced draft fan 6 and close the exhaust valve at the exhaust pipe orifice 24. At this time, the reaction tank body 2 is in a closed state.

[0056] S5. Control the driving motor 3 to start and operate, that is, control the reaction tank body 2 to start rotating, and periodically rotate forward and reverse. In this way, under the stirring action of the frying plate, the steel slag in the reaction tank body 2 is in full contact with the flue gas, and the carbon dioxide gas component in the flue gas is gradually absorbed and solidified by the steel slag, thereby reducing the carbon dioxide gas content in the flue gas, and further achieving the purpose of carbon reduction.

[0057] S6. Repeat the above steps S3 to S5 until the steel slag in the reaction tank body 2 no longer has the carbon absorption effect. Then open the cover at the discharge port 25 of the reaction tank body 2, control the reaction tank body 2 to rotate in one-way forward, and the spiral plate 21 in the reaction tank body 2 can gradually push the steel slag to the discharge port 25 and discharge the steel slag from the discharge port 25.

[0058] Repeating the above steps S1 to S6 can continuously carry out the solidification treatment of carbon dioxide gas in the flue gas discharged from the thermal power plant.

[0059] In addition, when it is necessary to recycle the flue gas in the reaction tank body 2 into the flue 1, the valve on the three-way reversing pipeline can be controlled to make the air inlet of the induced draft fan 6 communicate with the air inlet pipe orifice 23 of the reaction tank body 2, and the air outlet of the induced draft fan 6 communicate with the flue 1. In this way, the function of recycling the flue gas in the reaction tank body 2 can be realized.

[0060] It should be noted that the steel slag carbon fixation reaction device is not only used to treat the flue gas discharged from the thermal power plant, but also can be used to carry out the solidification treatment of carbon dioxide gas in the flue gas containing carbon dioxide gas discharged from other carbon dioxide emission sources.

[0061] The reaction tank body of this embodiment has the following advantages:

[0062] A spiral plate and numerous stir-frying plates are arranged in the reaction tank body. When the reaction tank body is applied to the steel slag carbon sequestration reaction device, steel slag is filled into the reaction tank body, and carbon dioxide gas is introduced into the reaction tank body. When the reaction tank body makes a fixed-axis rotation movement based on its own central axis, the stir-frying plates in the reaction tank body can repeatedly stir and agitate the steel slag, so that the steel slag in the reaction tank body is in full contact with the flue gas. The carbon dioxide gas component in the flue gas is gradually absorbed and solidified by the steel slag, reducing the carbon dioxide gas content in the flue gas, and thus achieving the purpose of carbon reduction.

[0063] The above are only the preferred embodiments of the present invention and are not used to limit the protection scope of the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A steel slag carbon sequestration reaction tank body, characterized in that: The reaction tank body (2) is a horizontal pressure vessel, and an air inlet port (23) and an exhaust port (24) are provided on the reaction tank body (2). An exhaust valve is provided at the exhaust port (24). A feed inlet (26) and a discharge port (25) are provided on the reaction tank body (2), and covers are arranged on both the feed inlet (26) and the discharge port (25). A spiral plate (21) is arranged inside the reaction tank body (2), and the spiral plate (21) is arranged based on the inner wall of the reaction tank body (2). A plurality of material frying plates are arranged inside the reaction tank body (2), and the material frying plates are arranged based on the inner wall of the reaction tank body (2).

2. The steel slag carbon sequestration reaction tank according to claim 1, wherein: The spiral plate (21) arranged inside the reaction tank body (2) extends all the way to the discharge port (25) of the reaction tank body (2).

3. The steel slag carbon sequestration reaction tank according to claim 1, characterized in that: The air inlet port (23) is arranged at the rear end of the reaction tank body (2), the exhaust port (24) is arranged at the front end of the reaction tank body (2), and the central axes of the air inlet port (23) and the exhaust port (24) are coaxial with the central axis of the whole reaction tank body (2).

4. The steel slag carbon sequestration reaction tank according to claim 1, characterized in that: The discharge port (25) is located at the front end of the reaction tank body (2), and the feed inlet (26) is located on the circumferential surface in the middle of the reaction tank body (2).

5. The steel slag carbon sequestration reaction tank according to claim 4, characterized in that: The front end of the reaction tank body (2) is configured as a conical head, and the rear end of the reaction tank body (2) is configured as an elliptical head.

6. The steel slag carbon fixation reaction tank body according to claim 1, wherein: An outer peripheral gear (22) is arranged on the circumferential surface around the reaction tank body (2) on the periphery of the reaction tank body (2).

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