Submerged arc furnace gas purification equipment

Abstract

The utility model discloses submerged arc furnace gas purification equipment, and relates to the technical field of gas purification. The decarburization device comprises a decarburization box, wherein a reaction mechanism, a valve mechanism and a heating mechanism are arranged on the decarburization box; the reaction mechanism comprises a decarburization assembly, a reaction assembly and a connecting assembly, the decarburization assembly comprises a motor fixedly connected to a decarburization box, the motor is fixedly connected with a rotating shaft, the rotating shaft is rotationally connected with the decarburization box, the rotating shaft is fixedly connected with a plurality of stirring rods, and the decarburization box is fixedly connected with a gas pipe and a nitrogen pipe; and the gas pipe and the nitrogen pipe are fixedly connected with gas outlet pipes. The reaction mechanism and the motor drive the plurality of stirring rods to rotate to further promote amine liquid to absorb impurities and carbon dioxide in coal gas, and two ventilation baffles in the catalysis box are matched to separate and react a detoxicating agent and a catalyst, so that each gas in the coal gas is separated and removed; and a worker can conveniently recycle the separated gas subsequently.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas purification, and particularly relates to a submerged arc furnace gas purification device. Background Art

[0002] The main components of gas are carbon monoxide, carbon dioxide, nitrogen, hydrogen and methane. In addition, it also contains a small amount of oxygen, and also contains a certain amount of tar, benzene, naphthalene, dust, sulfides, hydrogen cyanide, halogen elements, alkynes, etc. To produce ethanol by gas bioconversion, the gas needs to be purified to remove various harmful components to ensure the normal operation of the production device and fermentation. The components harmful to fermentation and the device catalyst are: oxygen, tar, benzene, naphthalene, hydrogen cyanide, dust, acetylene, chlorides, fluorides, sulfur oxides, phosphides, etc.

[0003] However, the submerged arc furnace gas contains a high content of CO2. In the bioconversion device, CO2 is an inert gas, which affects the fermentation efficiency. Therefore, a decarbonization device is set up to carry out decarbonization treatment on the gas. After the gas is washed with high-pressure alkanolamine, the gas volume is about 54000 Nm3 / h, and the pressure is about 0.6 MPaG. The gas enters the purification tower to deeply remove harmful components such as hydrogen chloride, hydrogen fluoride, hydrogen bromide, and phosphine to the catalyst. To ensure the continuous and stable operation of the subsequent fermentation, most of the O2 and HCN and C2H2 harmful to the fermentation organisms must be removed. A sulfur-tolerant deoxidation catalyst is used to cause a flameless reaction between H2 and O2 to remove O2. At the same time, under the action of this catalyst, HCN can undergo hydrolysis and hydrogenation reactions to generate NH3, CO and CH4 to achieve removal. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a submerged arc furnace gas purification device, which solves the problem by setting...

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] The utility model is a submerged arc furnace gas purification device, including a decarbonization box, and a reaction mechanism, a valve mechanism and a heating mechanism are arranged on the decarbonization box;

[0007] The reaction mechanism includes a decarbonization component, a reaction component and a connection component. The decarbonization component includes a motor fixedly connected to the bottom surface of the decarbonization box. The output end of the motor is fixedly connected with a rotating shaft. The top end of the rotating shaft extends to the inner wall of the decarbonization box and is rotationally connected with the decarbonization box. A plurality of stirring rods are fixedly connected to the outer wall of the rotating shaft. A gas pipe is fixedly connected to the top surface of the decarbonization box, and a nitrogen pipe is fixedly connected to the top surface of the decarbonization box. An air outlet pipe is fixedly connected to both the gas pipe and the nitrogen pipe. The bottom ends of the two air outlet pipes extend to the inner bottom wall of the decarbonization box and are fixedly connected with the decarbonization box.

[0008] Furthermore, the reaction component includes a first connecting pipe fixedly connected to the top surface of the decarbonization box. The end of the first connecting pipe is fixedly connected to a catalytic box, and two ventilation baffles are fixedly connected to the inner wall of the catalytic box.

[0009] Furthermore, the connecting component includes a number of connecting holes opened on the bottom surface of the catalytic box, and a second connecting pipe is fixedly connected to the bottom surface of the catalytic box.

[0010] Furthermore, the valve mechanism includes a sealing component, a spring component, and a clamping component. The sealing component includes a valve housing fixedly connected to the right end of the second connecting pipe. A sealing plate is rotatably connected to the inner wall of the valve housing, and a fixing block is fixedly connected to the outer wall of the valve housing.

[0011] Furthermore, the spring component includes a connecting shaft fixedly connected to the inner wall of the sealing plate. The front end of the connecting shaft extends to the front of the fixing block and is fixedly connected to a handle, and two springs are fixedly connected to the inner wall of the handle.

[0012] Furthermore, the clamping component includes a button block fixedly connected to the ends of the two springs. A clamping groove is opened on the front surface of the fixing block. A number of clamping blocks are fixedly connected to the outer wall of the button block, and the outer walls of the clamping blocks are all slidably connected to the inner wall of the clamping groove. The inner wall of the button block is slidably connected to the outer wall of the connecting shaft.

[0013] Furthermore, the heating mechanism includes a sealing door hinged to the outer wall of the catalytic box. A number of support columns are fixedly connected to the outer walls of the decarbonization box and the catalytic box, and a steam heater is fixedly connected to the outer walls of the decarbonization box and the catalytic box.

[0014] The utility model has the following beneficial effects:

[0015] 1. By setting up the reaction mechanism, the rotation of a number of stirring rods driven by the motor is realized to further promote the absorption of impurities and carbon dioxide in the coal gas by the amine solution. Cooperating with the two ventilation baffles in the catalytic box to separate the reaction of the detoxifying agent and the catalyst, the separation and removal of various gases in the coal gas are realized, which is convenient for the staff to recycle the separated gases subsequently.

[0016] 2. By setting up the valve mechanism, the elasticity of the spring is utilized. Pressing the button block and turning the handle can adjust the opening and closing of the sealing plate to the valve housing. The self-locking structure is convenient for personnel to operate the air outlet and sealing of the device, and prevents gas leakage.

[0017] Of course, it is not necessary for any product implementing the utility model to achieve all the above-mentioned advantages simultaneously. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 Schematic diagram of the rear view structure of the present utility model;

[0021] Figure 3 Schematic diagram of the decarbonization component structure of the present utility model;

[0022] Figure 4 Schematic diagram of the catalytic component structure of the present utility model;

[0023] Figure 5 Schematic diagram of the valve mechanism structure of the present utility model.

[0024] In the drawings, the list of components represented by each reference numeral is as follows:

[0025] 1, decarbonization box; 2, reaction mechanism; 3, valve mechanism; 4, heating mechanism; 21, motor; 22, rotating shaft; 23, stirring rod; 24, gas pipe; 25, nitrogen pipe; 26, outlet pipe; 27, first connecting pipe; 28, catalytic box; 29, ventilation baffle; 210, connecting hole; 211, second connecting pipe; 31, valve housing; 32, sealing piece; 33, fixing block; 34, connecting shaft; 35, handle; 36, spring; 37, button block; 38, card slot; 39, card block; 41, sealing door; 42, support column; 43, steam heater. Detailed implementation manners

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0027] Please refer to Figures 1-5 As shown, the present utility model is a submerged arc furnace gas purification device, including a decarbonization box 1, and a reaction mechanism 2, a valve mechanism 3, and a heating mechanism 4 are arranged on the decarbonization box 1;

[0028] The reaction mechanism 2 includes a decarbonization component, a reaction component, and a connection component. The decarbonization component includes a motor 21 fixedly connected to the bottom surface of the decarbonization tank 1. The output end of the motor 21 is fixedly connected to a rotating shaft 22. The top end of the rotating shaft 22 extends to the inner wall of the decarbonization tank 1 and is rotatably connected to the decarbonization tank 1. A plurality of stirring rods 23 are fixedly connected to the outer wall of the rotating shaft 22. A gas pipe 24 is fixedly connected to the top surface of the decarbonization tank 1, and a nitrogen gas pipe 25 is fixedly connected to the top surface of the decarbonization tank 1. An air outlet pipe 26 is fixedly connected to both the gas pipe 24 and the nitrogen gas pipe 25. The bottom ends of the two air outlet pipes 26 extend to the inner bottom wall of the decarbonization tank 1 and are fixedly connected to the decarbonization tank 1.

[0029] As shown in Figure 2 , Figure 3 and Figure 4 , the reaction component includes a first connection pipe 27 fixedly connected to the top surface of the decarbonization tank 1. The end of the first connection pipe 27 is fixedly connected to a catalytic tank 28. Two ventilation baffles 29 are fixedly connected to the inner wall of the catalytic tank 28. The connection component includes a plurality of connection holes 210 opened on the bottom surface of the catalytic tank 28. A second connection pipe 211 is fixedly connected to the bottom surface of the catalytic tank 28.

[0030] By setting the reaction mechanism 2, the rotation of a plurality of stirring rods 23 driven by the motor 21 is realized to further promote the absorption of impurities and carbon dioxide in the coal gas by the amine liquid. The two ventilation baffles 29 in the catalytic tank 28 are used to separate the detoxifying agent and the catalyst for reaction, so that each gas in the coal gas is separated and removed, which is convenient for the staff to recycle the separated gas later.

[0031] As shown in Figure 4 and Figure 5 , the valve mechanism 3 includes a sealing component, a spring component, and a clamping component. The sealing component includes a valve housing 31 fixedly connected to the right end of the second connection pipe 211. A sealing piece 32 is rotatably connected to the inner wall of the valve housing 31. A fixing block 33 is fixedly connected to the outer wall of the valve housing 31. The spring component includes a connecting shaft 34 fixedly connected to the inner wall of the sealing piece 32. The front end of the connecting shaft 34 extends to the front surface of the fixing block 33 and is fixedly connected to a handle 35. Two springs 36 are fixedly connected to the inner wall of the handle 35. The clamping component includes a button block 37 fixedly connected to the ends of the two springs 36. A clamping groove 38 is opened on the front surface of the fixing block 33. A plurality of clamping blocks 39 are fixedly connected to the outer wall of the button block 37. The outer walls of the plurality of clamping blocks 39 are all slidably connected to the inner wall of the clamping groove 38. The inner wall of the button block 37 is slidably connected to the outer wall of the connecting shaft 34.

[0032] By setting the valve mechanism 3, the elasticity of the spring 36 is utilized. Pressing the button block 37 to rotate the handle 35 can adjust the opening and closing of the sealing piece 32 to the valve housing 31. The self-locking structure is convenient for personnel to operate the air outlet and sealing of the device and prevent gas leakage.

[0033] Among them, as Figure 2 , Figure 3 and Figure 4 shown, the heating mechanism 4 includes a sealing door 41 hinged on the outer wall of the catalytic box 28. A number of support columns 42 are fixedly connected to the outer walls of the decarburization box 1 and the catalytic box 28, and a steam heater 43 is fixedly connected to the outer walls of the decarburization box 1 and the catalytic box 28.

[0034] By setting the heating mechanism 4, the sealing door 41 is set to seal the catalytic box 28. When the detoxifying agent and the catalyst in the catalytic box 28 are fully absorbed or the reaction is completed, the sealing door 41 is opened to take out the catalyst or supplement the catalyst inward. A number of support columns 42 are set to support the device, and the steam heater 43 heats the decarburization box 1 and the catalytic box 28, promoting the reaction in the decarburization box 1 and the catalytic box 28 to accelerate and improve the efficiency.

[0035] A specific application of this embodiment is: the steam heater 43. The steam heater 43 uses a steel-aluminum composite finned tube as the main heat exchanger element. Due to the adoption of an advanced composite process, there is basically no contact thermal resistance below a tube-in temperature of 210 degrees. Superheated steam condenses from top to bottom in the vertical finned tube. After the condensed saturated water passes through the gas-liquid separator, it flows back to the subcooling zone under the action of the steam pressure and flows from bottom to top in the finned tube in the subcooling zone for sensible heat exchange. The regenerated gas to be heated flows perpendicular to the finned tube and passes over the tube bundle, exchanging heat with the steam in the tube, so as to achieve the purpose of heat transfer. The purpose of setting the gas-liquid separator is mainly to separate the non-condensable gas in the steam and avoid the generation of a vapor-liquid interface in the heat exchange tube under non-design conditions, ensuring that the medium in the tube entering the subcooling zone is completely saturated water and reducing the impact corrosion on the heat exchange tube and the welded joint caused by the vapor-liquid interface.

[0036] By setting up the reaction mechanism 2, the gas pipe 24 is connected to the outlet of the front-side TSA process, and the nitrogen pipe 25 is connected to the nitrogen storage device. When the gas passes through the gas pipe 24 and the outlet pipe 26, since the end of the outlet pipe 26 is connected to the bottom of the decarbonization tank 1 and immersed in the original composite amine solution in the decarbonization tank 1, the gas passes through the outlet pipe 26 and directly contacts the composite amine solution. The driving motor 21 drives the rotating shaft 22 to rotate, and the rotating shaft 22 drives several stirring rods 23 to rotate, making the composite amine solution in the decarbonization tank 1 constantly in a stirred state, so that carbon dioxide and other acidic impurities in the gas are fully absorbed by the amine solution. The nitrogen pipe 25 is set to fill nitrogen into the decarbonization tank 1 and cooperate with the steam heater 43 to heat, so that carbon dioxide is separated from the amine solution for recycling. Other gases in the unabsorbed gas pass through the first connecting pipe 27 and enter the catalytic tank 28. Two ventilation baffles 29 are set to divide the inside of the catalytic tank 28 into three layers. The top layer is filled with a detoxifying agent, the middle layer is filled with a sulfided multi-component cobalt-molybdenum catalyst, and the bottom layer is filled with a composite functional catalyst for alkynes and deoxidation. Oxygen, hydrogen cyanide, and alkynes in the gas are removed. The purified gas enters the second connecting pipe 211 through the connecting hole 210 and cooperates with the valve mechanism 3 to enter the next process. It realizes the use of the drive of the motor 21 to drive several stirring rods 23 to rotate to further promote the amine solution to absorb impurities and carbon dioxide in the gas, and cooperate with the two ventilation baffles 29 in the catalytic tank 28 to separate the detoxifying agent and the catalyst for reaction, so that each gas in the gas is separated and removed, which is convenient for the staff to recycle the separated gas later.

[0037] By setting up the valve mechanism 3, the staff can press the button block 37 by grasping the handle 35, making the two springs 36 in a compressed state. The button block 37 drives several clamping blocks 39 to disengage from the card slots 38, and rotates the handle 35 to drive the connecting shaft 34 to rotate. The connecting shaft 34 drives the sealing piece 32 to rotate, so that the valve housing 31 in the sealed state of the sealing piece 32 is unsealed. The purified gas in the catalytic tank 28 then enters the valve housing 31 from the second connecting pipe 211 and flows to the next process from the valve housing 31. It realizes the use of the elasticity of the spring 36, pressing the button block 37 and rotating the handle 35 can adjust the opening and closing of the sealing piece 32 to the valve housing 31. The self-locking structure is convenient for personnel to operate the gas outlet and sealing of the device and prevent gas leakage.

[0038] By setting up the heating mechanism 4, the sealing door 41 is set to seal the catalytic tank 28. When the detoxifying agent and the catalyst in the catalytic tank 28 are saturated with absorption or the reaction is completed, the sealing door 41 is opened to take out the catalyst or supplement the catalyst inward. Several support columns 42 are set to support the device. The steam heater 43 heats the decarbonization tank 1 and the catalytic tank 28, promoting the reaction in the decarbonization tank 1 and the catalytic tank 28 to speed up and improve the efficiency.

[0039] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0040] The preferred embodiments of the present utility model disclosed above are only used to help explain the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A submerged arc furnace gas purification device, comprising a decarbonization tank (1), wherein a reaction mechanism (2), a valve mechanism (3) and a heating mechanism (4) are arranged on the decarbonization tank (1), and it is characterized in that: The reaction mechanism (2) includes a decarbonization component, a reaction component and a connection component. The decarbonization component includes a motor (21) fixedly connected to the bottom surface of the decarbonization tank (1). The output end of the motor (21) is fixedly connected with a rotating shaft (22). The top end of the rotating shaft (22) extends to the inner wall of the decarbonization tank (1) and is rotatably connected with the decarbonization tank (1). A plurality of stirring rods (23) are fixedly connected to the outer wall of the rotating shaft (22). A gas pipe (24) is fixedly connected to the top surface of the decarbonization tank (1). A nitrogen gas pipe (25) is fixedly connected to the top surface of the decarbonization tank (1). An air outlet pipe (26) is fixedly connected to both the gas pipe (24) and the nitrogen gas pipe (25). The bottom ends of the two air outlet pipes (26) extend to the inner bottom wall of the decarbonization tank (1) and are fixedly connected with the decarbonization tank (1).

2. The hot metal smelting furnace gas purification device according to claim 1, characterized in that, The reaction component includes a first connecting pipe (27) fixedly connected to the top surface of the decarbonization tank (1). The end of the first connecting pipe (27) is fixedly connected with a catalytic tank (28). Two ventilation baffles (29) are fixedly connected to the inner wall of the catalytic tank (28).

3. The ferroalloy furnace gas purification equipment according to claim 2, characterized in that, The connection component includes a plurality of connection holes (210) opened on the bottom surface of the catalytic tank (28). A second connecting pipe (211) is fixedly connected to the bottom surface of the catalytic tank (28).

4. The smelting electric furnace gas purification equipment according to claim 3, wherein The valve mechanism (3) includes a sealing component, a spring component and a clamping component. The sealing component includes a valve housing (31) fixedly connected to the right end of the second connecting pipe (211). A sealing piece (32) is rotatably connected to the inner wall of the valve housing (31). A fixing block (33) is fixedly connected to the outer wall of the valve housing (31).

5. The ferroalloy furnace gas purification equipment according to claim 4, characterized in that, The spring component includes a connecting shaft (34) fixedly connected to the inner wall of the sealing piece (32). The front end of the connecting shaft (34) extends to the front surface of the fixing block (33) and is fixedly connected with a handle (35). Two springs (36) are fixedly connected to the inner wall of the handle (35).

6. The gas purification equipment for submerged arc furnace according to claim 5, characterized in that The clamping component includes a button block (37) fixedly connected to the ends of the two springs (36). A clamping groove (38) is opened on the front surface of the fixing block (33). A plurality of clamping blocks (39) are fixedly connected to the outer wall of the button block (37). The outer walls of the plurality of clamping blocks (39) are all slidably connected with the inner wall of the clamping groove (38). The inner wall of the button block (37) is slidably connected with the outer wall of the connecting shaft (34).

7. The smelting electric furnace gas purification equipment according to claim 6, characterized in that, The heating mechanism (4) includes a sealing door (41) hinged to the outer wall of the catalytic tank (28). A plurality of support columns (42) are fixedly connected to the outer walls of the decarbonization tank (1) and the catalytic tank (28). A steam heater (43) is fixedly connected to the outer walls of the decarbonization tank (1) and the catalytic tank (28).

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