Steelmaking waste gas treatment device

Abstract

The utility model relates to the technical field of steel smelting and discloses a steelmaking waste gas treatment device which comprises a waste gas conveying pipeline, an electrostatic dust collector is connected to the tail end of the waste gas conveying pipeline, and a water-cooling heat dissipation assembly connected to the ground is arranged on the outer side of the front end of the waste gas conveying pipeline. The exhaust gas conveying pipeline is provided with a dehumidification assembly at the tail end of the water-cooling heat dissipation assembly. The water-cooling heat dissipation assembly is arranged on the outer side of the waste gas conveying pipeline, waste gas in the pipeline can be cooled, in this way, the waste gas cannot erode the heat dissipation assembly, the service life of the assembly is prolonged, and meanwhile the heat dissipation effect is guaranteed; and by arranging the dehumidification assembly, moisture in the waste gas can be adsorbed out and discharged from the waste water pipe under the action of gravity, so that the working condition of the electrostatic dust collector is improved, and the risk of equipment corrosion can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of steel smelting technology, concretely is a steelmaking waste gas treatment device. BACKGROUND

[0002] The steelmaking waste gas refers to the waste gas generated in the steelmaking process, mainly from ironmaking, steelmaking, continuous casting, rolling and other production processes, and raw material treatment, coking, sintering and other auxiliary processes, which contains various harmful substances, and has potential harm to human health and environment, therefore, in order to effectively control the steelmaking waste gas pollution, a series of treatment measures need to be taken on the waste gas, including pretreatment, desulfurization treatment, denitration treatment, dust removal treatment, emission monitoring and the like, so that the discharged waste gas is harmless. In summary, the steelmaking waste gas is complex in composition and serious in harm, and comprehensive measures need to be taken for effective control, and through scientific and reasonable waste gas treatment process and strict emission monitoring measures, the environmental pollution problem in the steelmaking process can be effectively controlled.

[0003] The patent with the current publication number CN214486106U discloses a waste gas treatment device for steelmaking plant, which comprises a device main body, an air inlet pipe, an air outlet pipe, an equipment box, a through groove, a mounting groove, a dust collecting box, a handle, a fan blade, a transmission rod, a transmission gear one, a dust screen, a plane bearing, a fixing rod, a connecting rod, a cleaning brush, a transmission gear two, a filling cylinder, a flange and an adsorption layer. The air inlet pipe is fixedly connected to the left side of the middle of the device main body, and the air outlet pipe is fixedly connected to the top of the right end of the air inlet pipe. The utility model can perform dust removal treatment on flue gas and clean the dust attached to the dust screen, thereby improving the dust removal efficiency and smoke exhaust efficiency.

[0004] The above device can perform dust removal treatment on flue gas and clean the dust attached to the dust screen, but still has the following shortcomings:

[0005] There are various ways to treat steelmaking waste gas, and reasonable selection needs to be made according to the scene, and wet dust removal is often used for treatment, but wet dust removal can cause high energy consumption, large water consumption and complex sewage treatment problems, so dry dust removal is often used instead of wet dust removal in factories. If dry dust removal is needed, the temperature and humidity of the waste gas need to be controlled, but the existing cooling method has high energy consumption, and the waste gas may also cause corrosion of the cooling equipment when contacting the cooling equipment. UTILITY MODEL CONTENTS

[0006] In view of the shortcomings of the prior art, the utility model provides a steelmaking waste gas treatment device, which solves the problem that the waste gas may corrode the cooling equipment when cooling.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a steelmaking waste gas treatment device, including waste gas pipeline, the tail end of waste gas pipeline is connected with electrostatic precipitator, the outer side of the front end of waste gas pipeline is provided with the water cooling heat sink assembly connected to ground, waste gas pipeline is provided with dehumidification assembly at the tail end of water cooling heat sink assembly, water cooling heat sink assembly includes the pipe still that wraps in the outer side of waste gas pipeline, spiral water pipe is provided with in the pipe still, spiral water pipe is connected with the heat dissipation plate that sets up on the ground through water inlet pipe and water outlet pipe, the water inlet pump that is provided with with water inlet pipe is set up on the heat dissipation plate, the water outlet pump that is provided with with water outlet pipe is set up on the heat dissipation plate, the top surface of pipe still front and back end is provided with temperature sensor.

[0008] Further, the dehumidification assembly includes a limiting ring fixed to the lower end of the outer side of the waste gas pipeline, the lower end of the inner side of the waste gas pipeline is provided with a placement plate at both ends of the limiting ring, a porous water absorption layer is arranged between the placement plates, a waste water pipe is arranged on the bottom surface of the waste gas pipeline between the placement plates, a water outlet is formed in the middle of the bottom surface of the limiting ring through the waste water pipe, a discharge valve is arranged outside the water outlet of the waste water pipe, and a water amount observation window is arranged on the waste water pipe outside the limiting ring.

[0009] Further, the upper end of the outer side of the waste gas pipeline is provided with a fixing ring fitted to the inner wall of the waste gas pipeline, the waste gas pipeline is provided with a placement opening for placing the fixing ring, one end of the fixing ring is rotatably connected to the limiting ring, and the other end is fixedly connected through bolts, the inner side of the fixing ring is provided with a sealing ring with an inner diameter fitted to the inner diameter of the waste gas pipeline, and the outer diameter of the sealing ring is greater than the outer diameter of the waste gas pipeline.

[0010] Further, the water cooling heat sink assembly and the dehumidification assembly are arranged between the waste gas pipeline and the electrostatic precipitator.

[0011] Further, two spiral water pipes are uniformly arranged in the pipe still, and a temperature sensor is arranged on the top surface of the pipe still between the spiral water pipes.

[0012] Further, a cooling fan is arranged on the heat dissipation plate.

[0013] Further, a hot water outlet is arranged on one side of the water outlet pump of the heat dissipation plate.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. By arranging the water cooling heat sink assembly on the outer side of the waste gas pipeline, the waste gas in the pipeline can be cooled, so that the waste gas does not erode the heat sink assembly, prolonging the service life of the assembly while ensuring the heat dissipation effect; by arranging the dehumidification assembly, the moisture in the waste gas can be adsorbed and discharged from the waste water pipe under the action of gravity, thereby improving the working conditions of the electrostatic precipitator and reducing the risk of equipment corrosion.

[0016] 2. Through the setting of the fixed ring and the sealing ring, the porous water absorption layer can be placed quickly, and the working efficiency is improved; through the setting of the multiple groups of water-cooling heat dissipation components and the dehumidification components, the heat dissipation and dehumidification effects can be improved, and through the uniform setting of the two spiral water pipes in the heat pipe, whether water cooling is performed can be controlled respectively, so that under the cooperation of the temperature sensor, the temperature of the waste gas entering the electrostatic precipitator can be ensured to be appropriate; through the setting of the hot water outlet on one side of the heat dissipation plate, hot water can be transported to other places when needed, so that the heat energy in the waste gas is recycled and utilized, the energy utilization efficiency is improved, and the energy consumption is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0021] In the drawing: 1, waste gas transportation pipeline; 101, placing plate; 102, waste water pipe; 103, discharge valve; 104, water amount observation window; 105, placing opening; 2, electrostatic precipitator; 3, water-cooling heat dissipation component; 301, heat pipe; 302, spiral water pipe; 303, water inlet pipe; 304, water outlet pipe; 305, heat dissipation plate; 306, water inlet pump; 307, water outlet pump; 308, cooling fan; 309, hot water outlet; 4, dehumidification component; 401, limiting ring; 402, porous water absorption layer; 403, water outlet; 404, fixed ring; 405, sealing ring; 5, temperature sensor. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0023] As Figures 1 to 4As shown, a steelmaking waste gas treatment device, including waste gas transportation pipeline 1, the end of waste gas transportation pipeline 1 is connected with electrostatic precipitator 2, the front end of waste gas transportation pipeline 1 is provided with water-cooling heat dissipation assembly 3 connected to the ground, waste gas transportation pipeline 1 is provided with dehumidification assembly 4 at the end of water-cooling heat dissipation assembly 3, water-cooling heat dissipation assembly 3 includes heat pipe 301 wrapped outside waste gas transportation pipeline 1, spiral water pipe 302 is arranged in heat pipe 301, spiral water pipe 302 is connected with heat dissipation plate 305 arranged on the ground through water inlet pipe (303) and water outlet pipe 304, heat dissipation plate 305 is provided with water inlet pump 306 connected with water inlet pipe 303, heat dissipation plate 305 is provided with water outlet pump 307 connected with water outlet pipe 304, temperature sensor 5 is arranged on the top surface of the front and rear ends of heat pipe 301.

[0024] As Figure 1 shown, the steelmaking waste gas treatment device in the utility model is similar in structure to the prior art, and the patent with the publication number CN214486106U discloses a waste gas treatment device for a steelmaking plant. Figures 1 to 4 As shown, in use, waste gas is transported by waste gas transportation pipeline 1, in the process of flowing, the worker will control multiple water inlet pumps 306 to work according to the data transmitted by temperature sensor 5, and the cooling water in heat dissipation plate 305 is sent into spiral water pipe 302 in heat pipe 301 through water inlet pipe 303, the cooling water absorbs the heat of waste gas transmitted from the inside of heat pipe 301, and falls into heat dissipation plate 305 again from water outlet pipe 304, at this time, the hot water is cooled in heat dissipation plate 305, and then reenters water inlet pump 306, so as to realize the cooling circulation of waste gas; in the cooling process, the worker controls the water inlet pumps 306 in different sections according to the data transmitted by temperature sensor 5, so that the temperature of waste gas reaches the appropriate requirement, and it will not be too high or too low, and if it is necessary to recycle the heat energy in waste gas, the hot water sent by water outlet pump 307 can be sent to other places through hot water outlet 309, so as to improve the energy utilization efficiency and reduce energy consumption; after being cooled, waste gas passes through porous water absorption layer 402, in the process of passing through, the moisture in waste gas is adsorbed and falls between placing plates 101 under the action of gravity, and then falls into waste water pipe 102, at this time, the accumulated water amount is observed through water amount observation window 104, when the water amount is appropriate, the discharge valve 103 is opened to discharge the accumulated water, and when the accumulated water is discharged, the discharge valve 103 is closed again, so as to realize the dehumidification of waste gas; waste gas passes through the heat dissipation of water-cooling heat dissipation assembly 3 and the dehumidification of dehumidification assembly 4 in waste gas transportation pipeline 1, so as to improve the treatment effect of waste gas; finally, waste gas enters electrostatic precipitator 2 for dust removal treatment.

[0025] As Figure 2 and Figure 3 shown, the dehumidification assembly 4 includes a limiting ring 401 fixed at the lower end of the outer side of the exhaust gas conveying pipeline 1, the inner wall of the exhaust gas conveying pipeline 1 is provided with a placing plate 101 at the lower end, a porous water absorption layer 402 is arranged between the placing plates 101, and the bottom surface of the exhaust gas conveying pipeline 1 between the placing plates 101 is provided with a wastewater pipe 102. A water outlet 403 passing through the wastewater pipe 102 is formed in the middle of the bottom surface of the limiting ring 401, a discharge valve 103 is arranged outside the water outlet 403, and a water amount observation window 104 is arranged on the wastewater pipe 102 outside the limiting ring 401.

[0026] Specifically, the porous water absorption layer 402 is placed by arranging the placing plate 101, so that the porous water absorption layer 402 can be fixed, and when the exhaust gas passes through, the water in the exhaust gas is absorbed by the porous water absorption layer 402 and falls into the wastewater pipe 102 under the action of gravity; at this time, the water amount observation window 104 is used to observe the accumulated water amount, and when the water amount is appropriate, the accumulated water is discharged by opening the discharge valve 103, thereby realizing dehumidification of the exhaust gas.

[0027] As Figure 2 and Figure 3 shown, the upper end of the outer side of the exhaust gas conveying pipeline 1 is provided with a fixed ring 404 abutting against the inner wall of the exhaust gas conveying pipeline 1, the exhaust gas conveying pipeline 1 is provided with a placing opening 105 for placing the fixed ring 404, one end of the fixed ring 404 is rotationally connected with the limiting ring 401, and the other end is fixedly connected by a bolt, the inner side of the fixed ring 404 is provided with a sealing ring 405 with an inner diameter abutting against the inner diameter of the exhaust gas conveying pipeline 1, and the outer diameter of the sealing ring 405 is greater than the outer diameter of the exhaust gas conveying pipeline 1.

[0028] Specifically, the fixed ring 404 abutting against the inner wall of the exhaust gas conveying pipeline 1 is arranged, when it is necessary to maintain and replace the porous water absorption layer 402, the bolt can be removed, so that the fixed ring 404 is rotated to take out the porous water absorption layer 402, the operation is simple, efficient and fast, and the work efficiency is improved; and the sealing ring 405 arranged on the inner side of the fixed ring 404 can be tightly abutted with the limiting ring 401 and the exhaust gas conveying pipeline 1 when closed, so as to avoid gas leakage from the gap.

[0029] As Figure 1 shown, the water-cooled heat dissipation assembly 3 and the dehumidification assembly 4 are arranged between the exhaust gas conveying pipeline 1 and the electrostatic precipitator 2.

[0030] As Figure 1 and Figure 4 shown, two spiral water pipes 302 are uniformly arranged in the heat pipe 301, and a temperature sensor 5 is arranged on the top surface of the heat pipe 301 between the spiral water pipes 302.

[0031] Specifically, by setting two spiral water pipes 302, water cooling is set separately, so that whether the spiral water pipes 302 perform water cooling can be controlled respectively, so that the temperature of the exhaust gas entering the electrostatic precipitator 2 can be ensured to be appropriate under the cooperation of the multiple temperature sensors 5, and the influence of excessively low temperature on the electrostatic precipitation can be avoided.

[0032] As shown in Figure 4 The heat dissipation plate 305 is provided with a cooling fan 308.

[0033] Specifically, by setting the cooling fan 308, the heat dissipation efficiency of the heat dissipation plate 305 can be accelerated.

[0034] As shown in Figure 4 The heat dissipation plate 305 is provided with a hot water outlet 309 on the side of the water outlet pump 307.

[0035] Specifically, by setting the hot water outlet 309, when hot water is needed, such as preheating combustion-supporting air, heating boiler feed water, etc., the hot water output by the water outlet pump 307 can be sent to the designated place through the hot water outlet 309, so that the heat energy in the exhaust gas is recycled and utilized, the energy utilization efficiency is improved, and the energy consumption is reduced.

[0036] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A steelmaking off-gas treatment device comprising an off-gas transport duct (1) at the end of which an electrostatic precipitator (2) is connected, characterized in that, The outer side of the front end of the waste gas conveying pipeline (1) is provided with a water-cooled heat dissipation assembly (3) connected to the ground, and the waste gas conveying pipeline (1) is provided with a dehumidification assembly (4) at the end of the water-cooled heat dissipation assembly (3), the water-cooled heat dissipation assembly (3) comprises a heat pipe (301) wrapped outside the waste gas conveying pipeline (1), the heat pipe (301) is provided with a spiral water pipe (302) inside, the spiral water pipe (302) is connected with a heat dissipation plate (305) arranged on the ground through a water inlet pipe (303) and a water outlet pipe (304), the heat dissipation plate (305) is provided with a water inlet pump (306) connected with the water inlet pipe (303), and the heat dissipation plate (305) is provided with a water outlet pump (307) connected with the water outlet pipe (304), and the heat pipe (301) is provided with a temperature sensor (5) on the top surface of the front and rear ends.

2. A device for treating steelmaking off-gas according to claim 1, characterized in that, The dehumidification assembly (4) comprises a limiting ring (401) fixed to the lower end of the outer side of the waste gas conveying pipeline (1), and the inner wall of the waste gas conveying pipeline (1) is provided with a placing plate (101) at the lower end of the limiting ring (401). A porous water absorption layer (402) is arranged between the placing plates (101), and a waste water pipe (102) is arranged on the bottom surface of the waste gas conveying pipeline (1) between the placing plates (101). A water outlet (403) passing through the waste water pipe (102) is formed in the middle of the bottom surface of the limiting ring (401), and a discharge valve (103) is arranged outside the water outlet (403). A water amount observation window (104) is arranged on the waste water pipe (102) outside the limiting ring (401).

3. A device for treating steelmaking off-gas according to claim 1, characterized in that, The outer side of the upper end of the waste gas conveying pipeline (1) is provided with a fixing ring (404) abutting the inner wall of the waste gas conveying pipeline (1), and the waste gas conveying pipeline (1) is provided with a placing opening (105) for placing the fixing ring (404). One end of the fixing ring (404) is rotatably connected with the limiting ring (401), and the other end is fixedly connected through a bolt. A sealing ring (405) with an inner diameter abutting the inner diameter of the waste gas conveying pipeline (1) is arranged on the inner side of the fixing ring (404), and the outer diameter of the sealing ring (405) is greater than the outer diameter of the waste gas conveying pipeline (1).

4. A device for treating steelmaking off-gas according to claim 1, characterized in that, The water-cooled heat dissipation assembly (3) and the dehumidification assembly (4) are arranged between the waste gas conveying pipeline (1) and the electrostatic precipitator (2).

5. A device for treating steelmaking off-gas according to claim 1, characterized in that, Two spiral water pipes (302) are uniformly arranged in the heat pipe (301), and a temperature sensor (5) is arranged on the top surface of the heat pipe (301) between the spiral water pipes (302).

6. A device for treating steelmaking off-gas according to claim 1, characterized in that, A cooling fan (308) is arranged on the heat dissipation plate (305).

7. A device for treating steelmaking off-gas according to claim 1, characterized in that, A hot water outlet (309) is arranged on one side of the water outlet pump (307) of the heat dissipation plate (305).

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