Industrial waste gas desulfurization and wet electricity integrated device

Abstract

The utility model discloses an industrial waste gas desulfurization and wet electricity integrated device, and relates to the technical field of waste gas treatment. The device comprises an aeration box, a desulfurization box and a wet electric dust collector, an evaporation pipe penetrates through and is clamped to the top of one side of the aeration box, a liquid pump penetrates through and is clamped to one side of the aeration box, the desulfurization box is clamped and fixed to the top of the aeration box, and the wet electric dust collector is clamped and fixed to the top of the desulfurization box. By arranging the aeration box, the desulfurization box and the wet electric dust collector, the problems that although a desulfurization wet electric integrated device can carry out multi-step treatment on waste gas, the waste gas in unit time is often difficult to be fully treated when the waste gas amount is large and the flow speed of the waste gas is high, and when the device is used for treating a sulfate solution, the waste gas cannot be fully treated are solved. And particulate matters are easy to adhere to the inner wall of the wet electric dust collector, so that the dust collection efficiency of the wet electric dust collector can be influenced by long-time accumulation of the particulate matters.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of waste gas treatment, especially relates to a kind of industrial waste gas desulfurization wet electricity integrated device. BACKGROUND

[0002] Industrial waste gas is the general term of various exhaust gases containing pollutants discharged into the air during fuel combustion and production process in enterprise factory area, which includes carbon dioxide, carbon disulfide, hydrogen sulfide, fluoride, nitrogen oxides, chlorine, hydrogen chloride, carbon monoxide, smoke dust and production dust, and will pollute the air when discharged into the atmosphere. Therefore, waste gas usually needs to be pretreated before discharge to meet the national standard for external discharge of waste gas. The industrial waste gas desulfurization wet electricity integrated device is an industrial waste gas treatment device integrating desulfurization system, wet electric precipitator and wastewater treatment system, which has the advantages of high efficiency, low energy consumption, wide adaptability and environmental protection. However, it still has the following disadvantages in actual use:

[0003] When the desulfurization wet electricity integrated device treats waste gas, the desulfurizer is usually sprayed into the flowing waste gas to make the waste gas react with sulfide and desulfurizer to generate sulfate. Then the waste gas passes through the wet electric precipitator, which separates liquid droplets and particulate matter from flue gas by electric field, gravity or inertial force. Although the device can treat waste gas in multiple steps, it is difficult to fully treat waste gas in unit time when the amount of waste gas is large and the flow rate of waste gas is fast, especially for desulfurization treatment of waste gas. Tiny sulfate droplets may be discharged with the gas stream.

[0004] When the desulfurization wet electricity integrated device treats sulfate solution after reaction with desulfurizer, the content of alkaline components in the solution is low, which requires additional alkaline treatment agent to further treat sulfate during sulfate treatment, increasing treatment cost. In addition, the inner wall of the wet electric precipitator is easily attached with particulate matter due to the electric field effect, which may affect the dust removal efficiency of the wet electric precipitator after long-term accumulation. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of industrial waste gas desulfurization wet electricity integrated device, through aeration tank, desulfurization tank and wet electric precipitator, solve the problem that although the desulfurization wet electricity integrated device can treat waste gas in multiple steps, when the amount of waste gas is large and the flow rate of waste gas is fast, it is difficult to fully treat waste gas in unit time. Additional alkaline treatment agent is needed to treat sulfate solution, increasing treatment cost. The inner wall of the wet electric precipitator is easily attached with particulate matter, which may affect the dust removal efficiency of the wet electric precipitator after long-term accumulation.

[0006] To solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses an industrial waste gas desulfurization wet electricity integration device, including aeration tank, desulfurization tank and wet electric dust collector, the aeration tank one side top is passed through the clamping and has evaporative pipe, the aeration tank one side is passed through the clamping and has liquid pump, the aeration tank top clamping fixed with desulfurization tank, the desulfurization tank inserts and has the stirring rod, the stirring rod outer surface clamping fixed with stirring vane, the desulfurization tank top clamping fixed with wet electric dust collector, the wet electric dust collector top is passed through the clamping and has a plurality of condensation pipes,

[0008] Through pouring water and desulfurizer in the desulfurization tank, and then making waste gas into the solution, the waste gas can be preliminarily desulfurized, and through the rotation of the stirring rod and the stirring vane, the desulfurizer, water and waste gas can be fully mixed, the treatment efficiency of the waste gas is ensured, the dust particles in the waste gas with high humidity are negatively charged through the wet electric dust collector after entering the wet electric dust collector, and the dust particles are attracted to the electrode under the action of the electric field and are captured, the solution is introduced into the aeration tank for aeration treatment after the solution treats the waste gas for a certain time, the evaporation speed of the water in the solution is increased by heating the solution, and then the concentration of the desulfurizer in the solution is increased, so that the desulfurizer can fully react with the sulfate in the solution, the water vapor enters the evaporative pipe, and is condensed and collected through the heat exchange of the condensation assembly, so that the loss of water is avoided, and the high-concentration desulfurizer can be pumped to the top of the wet electric dust collector through the liquid pump, so that the desulfurizer can further spray the waste gas after dust removal, so that the desulfurizer can react with sulfur dioxide in the waste gas again, the liquid drops can contact the residual dust again, the waste gas can be fully treated, and the inner wall of the wet electric dust collector can be washed under the action of gravity of a large amount of solution, so that the fine particles are prevented from accumulating on the inner wall of the wet electric dust collector, the treatment efficiency of the wet electric dust collector is ensured, and the water in the waste gas is condensed and flows back to the wet electric dust collector after the waste gas with water enters the condensation pipe, so that the effective components and the sulfate are prevented from being discharged, and the water amount for washing the wet electric dust collector is increased, and the cleaning efficiency is improved.

[0009] Further, the aeration tank one side bottom is passed through the welding and has the blowdown pipe, the evaporative pipe outer surface is passed through the clamping and has the condensation assembly, the aeration tank is clamped and fixed with heating pipe and filter screen in;

[0010] After the solution containing the sulfate and the desulfurizer is poured into the aeration tank, the solution can be heated through the heating pipe, the evaporation speed of the water in the solution is accelerated, and then the concentration of the desulfurizer in the solution is increased, so that the desulfurizer can fully react with the sulfate in the solution, the evaporated water vapor enters the evaporative pipe, and is condensed and collected through the heat exchange of the condensation assembly, so that the loss of water is avoided.

[0011] Further, the liquid pump top is passed through the clamping and has the connecting pipe, the connecting pipe top one side is passed through the clamping and has the spray pipe, and the liquid pump is located on the filter screen top.

[0012] The solution filtered by the filter screen can be pumped into the spray pipe by the liquid pump, the exhaust gas treated by the wet electric dust collector is sprayed, the desulfurizing agent reacts with sulfur dioxide in the exhaust gas again, the liquid droplets react with residual dust again, the exhaust gas is fully treated, the inner wall of the wet electric dust collector is washed by the large amount of solution flowing downward under the action of gravity, the fine particles are prevented from accumulating on the inner wall of the wet electric dust collector, and the treatment efficiency of the wet electric dust collector is ensured.

[0013] Further, the desulfurization tank is provided with an air inlet pipe penetratingly welded at one side of the bottom, an water inlet pipe penetratingly welded at one side of the top, a drain pipe penetratingly welded at the bottom, the drain pipe penetratingly inserted into the top of the filter screen, a transmission assembly penetratingly connected at one end of the desulfurization tank, the transmission assembly is connected with a stirring motor at the other side of the desulfurization tank, and the stirring rod is connected with the transmission assembly at the bottom.

[0014] The stirring motor can drive the stirring rod and the stirring blade to rotate, the water and the desulfurizing agent in the desulfurization tank are stirred, the water and the desulfurizing agent are fully mixed, the exhaust gas is preliminarily desulfurized when the exhaust gas is introduced into the solution, the content of sulfate in the solution is increased, the content of the desulfurizing agent is reduced after a certain period of treatment, the solution is discharged into the aeration tank through the drain pipe to be treated by aeration, the water content in the solution is reduced, the concentration of the desulfurizing agent in the solution is increased, and the desulfurizing agent can fully react with the sulfate in the solution.

[0015] Further, a plurality of heat dissipation fins are fixedly welded to the outer circumferential surface of the condensing pipe, a plurality of ventilation racks are penetratingly connected to the top of the condensing pipe, and one end of the spray pipe is penetratingly connected to the top of one end of the wet electric dust collector.

[0016] After the exhaust gas with high humidity enters the wet electric dust collector, the dust particles are negatively charged by the wet electric dust collector, and are attracted to the electrode under the action of the electric field and are captured, when a large amount of dust particles with high humidity accumulate on the inner wall of the wet electric dust collector, the dust particles fall into the solution in the desulfurization tank under the action of gravity, the solution sprayed by the spray pipe is used for humidifying and desulfurizing the exhaust gas after dust removal treatment, a large amount of solution flows downward under the action of gravity, the inner wall of the wet electric dust collector is washed, fine particles are prevented from accumulating on the inner wall of the wet electric dust collector, the treatment efficiency of the wet electric dust collector is ensured, the exhaust gas exchanges heat with the environment through the heat dissipation fins after the exhaust gas containing water enters the condensing pipe, the exhaust gas is cooled, the water is further condensed and flows back to the wet electric dust collector, effective components and sulfate are prevented from being discharged, the water amount for washing the wet electric dust collector is increased, and the cleaning efficiency is improved.

[0017] The utility model has the advantages that:

[0018] The utility model discloses a desulfurization tank and wet electric dust collector are set up, solved when the desulfurization wet electricity integration device to waste gas processing, often need first desulfurizer is sprayed to the flowing waste gas, make waste gas and sulfide and desulfurizer reaction, generate sulfate, make waste gas pass through wet electric dust collector, through electric field, gravity or inertial force etc. The principle will liquid drop and particulate matter and flue gas separate, the device can though multi -step processing to waste gas, but when waste gas quantity is larger, the flow rate of waste gas is faster, often difficult to fully process waste gas in unit time, especially for the desulfurization treatment of waste gas, the problem that the tiny sulfate liquid drop can be discharged with the air current, after waste gas is passed into the desulfurization tank, first and the solution containing desulfurizer in the desulfurization tank mix, make sulfur dioxide and desulfurizer produce sulfate, and the waste gas containing certain moisture is entered wet electric dust collector and is treated, and when waste gas moves to the top of wet electric dust collector, liquid pump can make the solution containing desulfurizer through the spray pipe and be sprayed to the top of wet electric dust collector, make desulfurizer react with waste gas again, make liquid drop contact with residual dust again, guarantee the full processing of waste gas, after the treated waste gas is entered the condenser pipe, through and the environment heat exchange, make waste gas cooling, and moisture condenses and flows back to wet electric dust collector, avoid effective component and sulfate discharge.

[0019] The utility model discloses a desulfurization tank and wet electric dust collector are set up, solved when the desulfurization wet electricity integration device to waste gas processing, often need first desulfurizer is sprayed to the flowing waste gas, make waste gas and sulfide and desulfurizer reaction, generate sulfate, and the waste gas containing certain moisture is entered wet electric dust collector and is treated, and when waste gas moves to the top of wet electric dust collector, liquid pump can make the solution containing desulfurizer through the spray pipe and be sprayed to the top of wet electric dust collector, make desulfurizer react with waste gas again, make liquid drop contact with residual dust again, guarantee the full processing of waste gas, after the treated waste gas is entered the condenser pipe, through and the environment heat exchange, make waste gas cooling, and moisture condenses and flows back to wet electric dust collector, avoid effective component and sulfate discharge. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the structure effect drawing of the utility model;

[0021] Figure 2 It is the structure drawing of the utility model aeration tank and liquid pump;

[0022] Figure 3 is a sectional view of the aeration tank of the utility model;

[0023] Figure 4 is a structural diagram of the desulfurization tank of the utility model;

[0024] Figure 5 is a structural diagram of the wet electric dust collector of the utility model.

[0025] Reference signs:

[0026] 1, aeration tank; 101, liquid pump; 102, evaporation pipe; 103, condensing assembly; 104, blowdown pipe; 105, connecting pipe; 106, spray pipe; 107, filter screen; 108, heating pipe; 2, desulfurization tank; 201, stirring motor; 202, transmission assembly; 203, stirring rod; 204, stirring blade; 205, water inlet pipe; 206, air inlet pipe; 207, drain pipe; 3, wet electric dust collector; 301, condensing pipe; 302, heat dissipation fin; 303, ventilation rack. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model.

[0028] Please refer to Figures 1-5 the utility model discloses an industrial waste gas desulfurization wet electric integrated device, including aeration tank 1, desulfurization tank 2 and wet electric dust collector 3, the evaporation pipe 102 is penetrated and is clamped in the top of one side of aeration tank 1, the liquid pump 101 is penetrated and is clamped in one side of aeration tank 1, the desulfurization tank 2 is clamped and fixed on the top of aeration tank 1, the stirring rod 203 is inserted in desulfurization tank 2, the stirring blade 204 is clamped and fixed on the outer circumferential surface of stirring rod 203, the wet electric dust collector 3 is clamped and fixed on the top of desulfurization tank 2, and multiple condensing pipes 301 are penetrated and clamped on the top of wet electric dust collector 3.

[0029] The water and desulfurizer are poured into the desulfurization box 2, and part of the water and desulfurizer are poured into the aeration tank 1. The stirring motor 201 is started to drive the stirring rod 203 and the stirring blade 204 to rotate, and the water and desulfurizer are stirred and mixed. At the same time, the heating pipe 108 is started to heat the solution in the aeration tank 1, so that the solution is boiled, the water in the solution is evaporated, the concentration of the desulfurizer in the solution is increased, the steam enters the evaporation pipe 102 for condensation treatment, and the water is collected. The exhaust gas is introduced into the solution in the desulfurization box 2, so that the exhaust gas and the solution are preliminarily treated to remove part of the sulfur dioxide and other substances in the exhaust gas, and part of the dust particles in the exhaust gas. At the same time, the humidity of the exhaust gas is increased. After the exhaust gas enters the wet electric precipitator 3, the dust particles are negatively charged by the wet electric precipitator 3, and are attracted to the electrode under the action of the electric field and are captured. The dust particles fall into the solution under the action of gravity. The high-concentration solution in the aeration tank 1 is pumped into the spray pipe 106 by the liquid pump 101, and is sprayed to the top of the wet electric precipitator 3 through the spray pipe 106, so that the exhaust gas is contacted with the desulfurizer again. The exhaust gas is further desulfurized and dusted. A large amount of solution flows downward under the action of gravity, and washes the inner wall of the wet electric precipitator 3 to prevent fine particles from accumulating on the inner wall of the wet electric precipitator 3. The exhaust gas containing water is cooled by heat exchange with the environment after entering the condensing pipe 301, so that the exhaust gas is cooled, and the water is further condensed and returned to the wet electric precipitator 3. Dry exhaust gas is discharged. The solution containing dust and sulfate is collected in the aeration tank 1 by opening the drain pipe 207 at a certain time, so as to supplement the solution in the aeration tank 1, and the solution containing high-concentration desulfurizer can further react with the sulfate.

[0030] As shown in Figures 1-3 , the exhaust pipe 104 is welded through the bottom of one side of the aeration tank 1. The condensing assembly 103 is clamped through the outer circumferential surface of the evaporation pipe 102. The heating pipe 108 and the filter screen 107 are clamped and fixed in the aeration tank 1. The connecting pipe 105 is clamped through the top of the liquid pump 101. The spray pipe 106 is clamped through the top of one side of the connecting pipe 105. The liquid pump 101 is located on the top of the filter screen 107.

[0031] After the solution containing sulfate and desulfurizer is poured into the aeration tank 1, the solution is heated by the heating pipe 108 to accelerate the evaporation speed of the water in the solution, thereby increasing the concentration of the desulfurizer in the solution, so that the desulfurizer and the sulfate in the solution fully react. The evaporated water vapor enters the evaporation pipe 102 and is heat-exchanged by the condensing assembly 103 to condense and collect the water vapor. The liquid pump 101 pumps the solution filtered by the filter screen 107 into the spray pipe 106 to spray the exhaust gas treated by the wet electric precipitator 3, so that the desulfurizer reacts with sulfur dioxide and other substances in the exhaust gas again, and the liquid droplets contact the residual dust again.

[0032] As shown in Figure 1 ,4 As shown in the figure, the desulfurization tank 2 is welded with an air inlet pipe 206 at one side of the bottom, and a water inlet pipe 205 at one side of the top, and a water outlet pipe 207 at the bottom, which is inserted into the top of the filter screen 107, and a transmission assembly 202 is connected at one end of the desulfurization tank 2, and a stirring motor 201 is connected at the other side of the desulfurization tank 2, and a stirring rod 203 is connected at the bottom of the transmission assembly 202, and the stirring motor 201 is connected with the transmission assembly 202 and the stirring rod 203;

[0033] The water and desulfurizer are poured into the desulfurization tank 2 through the water inlet pipe 205, and the solution is discharged into the aeration tank 1 through the water outlet pipe 207, and the stirring motor 201 drives the stirring rod 203 and the stirring blade 204 to rotate through the transmission assembly 202, so as to stir the water and desulfurizer poured into the desulfurization tank 2, so that the water and desulfurizer are fully mixed, and when the waste gas is introduced into the solution through the air inlet pipe 206, the waste gas and the solution are preliminarily desulfurized, and the larger dust particles in the waste gas are removed, and the humidity of the waste gas is increased. When the solution is treated for a certain period of time, the content of sulfate in the solution increases, and the content of desulfurizer decreases, and the solution containing sulfate and dust particles is discharged into the aeration tank 1 for aeration treatment through the opening of the water outlet pipe 207, and the desulfurizer and water are poured into the desulfurization tank 2 again.

[0034] As shown in the figure, Figure 1 , 5 A plurality of condensing pipes 301 are welded with heat dissipation fins 302 on the outer periphery, and a plurality of condensing pipes 301 are welded with a ventilation frame 303 at the top, and a spraying pipe 106 is connected at one end of the wet electric dust collector 3.

[0035] The waste gas with high humidity enters the wet electric dust collector 3, and the dust particles are charged with negative electricity through the wet electric dust collector 3, and are attracted to the electrode under the action of the electric field. When a large amount of dust particles with high humidity are accumulated on the inner wall of the wet electric dust collector 3, the dust particles fall into the solution in the desulfurization tank 2 under the action of gravity, and the waste gas is humidified and desulfurized by the solution sprayed through the spraying pipe 106 after dust removal treatment. A large amount of solution flows downward under the action of gravity, and the inner wall of the wet electric dust collector 3 is washed to prevent fine particles from accumulating on the inner wall of the wet electric dust collector 3. The waste gas containing water enters the condensing pipe 301, and the waste gas and the environment are exchanged through the heat dissipation fins 302 to cool the waste gas, so that the water is further condensed and flows back to the wet electric dust collector 3, and the dry waste gas is discharged through the ventilation frame 303.

[0036] The specific working principle of the utility model is: a large amount of water and desulfurizer are poured into the desulfurization box 2 through the water inlet pipe 205, and at the same time, part of the water and desulfurizer are poured into the aeration tank 1 through the drain pipe 207, the stirring motor 201 is started to drive the stirring rod 203 and stirring blade 204 to rotate, the water and desulfurizer are stirred and mixed, the heating pipe 108 is started to heat the solution in the aeration tank 1, the moisture in the solution is evaporated, the concentration of the desulfurizer in the solution is improved, the steam enters the evaporation pipe 102 and is condensed by the condensing assembly 103, the moisture is collected, the waste gas is introduced into the solution in the desulfurization box 2 through the air inlet pipe 206, the waste gas and the solution are preliminarily treated, part of the sulfur dioxide in the waste gas is removed, and at the same time, part of the dust particles in the waste gas are removed, after the waste gas enters the wet electric dust collector 3, the dust particles are charged by the wet electric dust collector 3, and under the action of the electric field, the dust particles approach the electrode and are captured, the dust particles fall into the solution under the action of gravity, the high-concentration solution in the aeration tank 1 is pumped into the spray pipe 106 by the liquid pump 101, and is sprayed to the top of the wet electric dust collector 3 through the spray pipe 106, so that the waste gas contacts the desulfurizer again, the waste gas is further desulfurized and dust-removed, a large amount of solution flows downward under the action of gravity, and the inner wall of the wet electric dust collector 3 is washed, so that fine particles are prevented from accumulating on the inner wall of the wet electric dust collector 3, the waste gas containing moisture is cooled by heat exchange with the environment after entering the condensing pipe 301, the moisture is further condensed and flows back to the wet electric dust collector 3, and the dry waste gas is discharged through the ventilation frame 303, the solution containing dust and sulfate flows into the aeration tank 1 by opening the drain pipe 207 at a fixed time, the solution in the aeration tank 1 is supplemented, and the solution containing high-concentration desulfurizer and sulfate is further reacted.

[0037] The above is only the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement of the technical scheme recorded in the foregoing embodiments, and belongs to the protection scope of the utility model.

Claims

1. An industrial waste gas desulfurization and wet electricity integrated device, comprising an aeration tank (1), a desulfurization tank (2) and a wet electricity dust collector (3), characterized in that: The evaporation pipe (102) is penetrated and clamped on one side top of the aeration tank (1), the liquid pump (101) is penetrated and clamped on one side of the aeration tank (1), the desulfurization tank (2) is clamped and fixed on the top of the aeration tank (1), the stirring rod (203) is inserted in the desulfurization tank (2), the stirring blade (204) is clamped and fixed on the outer circumferential surface of the stirring rod (203), the wet electric dust collector (3) is clamped and fixed on the top of the desulfurization tank (2), and a plurality of condensing pipes (301) are penetrated and clamped on the top of the wet electric dust collector (3).

2. The industrial waste gas desulfurization and wet electricity integrated device according to claim 1, characterized in that: The blowdown pipe (104) is penetrated and welded on the bottom of one side of the aeration tank (1), the condensing assembly (103) is penetrated and clamped on the outer circumferential surface of the evaporation pipe (102), and the heating pipe (108) and the filter screen (107) are clamped and fixed in the aeration tank (1).

3. The industrial waste gas desulfurization and wet electro-integrated device according to claim 2, characterized in that: The connecting pipe (105) is penetrated and clamped on the top of the liquid pump (101), the spraying pipe (106) is penetrated and clamped on one side of the top of the connecting pipe (105), and the liquid pump (101) is located on the top of the filter screen (107).

4. The industrial waste gas desulfurization and wet electricity integrated device according to claim 3, characterized in that: The air inlet pipe (206) is penetrated and welded on one side of the bottom of the desulfurization tank (2), the water inlet pipe (205) is penetrated and welded on one side of the top of the desulfurization tank (2), the drain pipe (207) is penetrated and welded on the bottom of the desulfurization tank (2), the drain pipe (207) is penetrated and inserted on the top of the filter screen (107), the driving assembly (202) is penetrated and clamped on one end of the desulfurization tank (2), the stirring motor (201) is clamped on the other side of the driving assembly (202) of the desulfurization tank (2), the stirring rod (203) is clamped on the bottom of the driving assembly (202), and the stirring motor (201) is drivingly connected through the driving assembly (202) and the stirring rod (203).

5. The industrial waste gas desulfurization and wet electricity integrated device according to claim 3, characterized in that: The heat dissipation fins (302) are welded and fixed on the outer circumferential surface of the plurality of condensing pipes (301), one ventilation rack (303) is penetrated and clamped on the top of the plurality of condensing pipes (301), and the spraying pipe (106) is penetrated and clamped on one end of the top of the wet electric dust collector (3).

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