CN109173681B - Industrial flue gas desulfurization process - Google Patents
Industrial flue gas desulfurization process Download PDFInfo
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- CN109173681B CN109173681B CN201811350744.0A CN201811350744A CN109173681B CN 109173681 B CN109173681 B CN 109173681B CN 201811350744 A CN201811350744 A CN 201811350744A CN 109173681 B CN109173681 B CN 109173681B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/507—Sulfur oxides by treating the gases with other liquids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/106—Peroxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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Abstract
The invention belongs to the technical field of industrial flue gas treatment, and particularly relates to an industrial flue gas desulfurization process, which comprises the following steps: performing dust removal treatment on the industrial flue gas by using an industrial flue gas dust removal device to remove solid particles in the industrial flue gas; introducing the dedusted industrial flue gas into an industrial flue gas recycling device by using a pipeline, arranging a spray head in the pipeline to spray water mist on the industrial flue gas, and removing sulfur dioxide in the industrial flue gas by using the industrial flue gas recycling device; discharging the desulfurized industrial flue gas through a pipeline, and arranging an activated carbon layer in the pipeline, wherein the activated carbon layer is used for removing water mist in the industrial flue gas and hydrogen peroxide mixed in the industrial flue gas; the staff inspects exhaust industrial flue gas, and the staff discharges the industrial flue gas that reaches emission standard, and the staff lets in industrial flue gas cyclic utilization device once more through the pipeline with the industrial flue gas that does not reach emission standard and carries out secondary treatment.
Description
Technical Field
The invention belongs to the technical field of industrial flue gas treatment, and particularly relates to an industrial flue gas desulfurization process.
Background
Along with the continuous development of industry, a large amount of industrial flue gas are discharged to the air, cause serious pollution to the atmospheric environment, cause the injury to human health, but industrial production is indispensable, this just needs to handle the flue gas when industrial production for the industrial flue gas discharges after reaching emission standard, but current industrial flue gas's processing method does not have fine harmful substance such as sulfur dioxide to carry out fine desorption and recycle in the industrial flue gas, and the effect of flue gas treatment is poor, has wasted the resource simultaneously.
Disclosure of Invention
In order to make up the defects of the prior art, the invention provides an industrial flue gas desulfurization process. The invention is mainly used for solving the problem that harmful substances such as sulfur dioxide and the like in industrial flue gas are not completely removed.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an industrial flue gas desulfurization process, which comprises the following steps:
s1: performing dust removal treatment on the industrial flue gas by using an industrial flue gas dust removal device to remove solid particles in the industrial flue gas;
s2: the industrial flue gas subjected to dust removal in the S1 is introduced into an industrial flue gas recycling device by using a pipeline, a spray head is arranged in the pipeline to spray water mist on the industrial flue gas, sulfur dioxide in the industrial flue gas is removed by the industrial flue gas recycling device, and the water mist further removes dust in the industrial flue gas, so that the dust is prevented from entering the industrial flue gas recycling device, and meanwhile, the industrial flue gas is mixed with the water mist, so that the industrial flue gas is better contacted with hydrogen peroxide in the industrial flue gas recycling device, and the removal rate of the sulfur dioxide in the industrial flue gas is improved;
s3: the desulfurized industrial flue gas in the S2 is discharged through a pipeline, and an activated carbon layer is arranged in the pipeline and used for removing water mist in the industrial flue gas and hydrogen peroxide mixed in the industrial flue gas, so that the discharged industrial flue gas is drier, the industrial flue gas is rapidly discharged, and the pollution to the environment caused by the combination of water vapor in the industrial flue gas and dust in the air is avoided;
s4: the workers inspect the industrial flue gas discharged in the step S3, the workers discharge the industrial flue gas which meets the discharge standard, and the workers introduce the industrial flue gas which does not meet the discharge standard into the industrial flue gas recycling device again through a pipeline for secondary treatment, so that the environment is prevented from being harmed by the discharged industrial flue gas;
the industrial flue gas recycling device adopted in the S2 comprises a shell, wherein a flue gas inlet is formed in the left side of the shell, a flue gas outlet is formed in the top of the shell, a mixing module is arranged above the shell and used for mixing hydrogen peroxide and a stabilizing agent together; a liquid spraying block, a spiral plate, a smoke inlet pipe and a liquid guide plate are sequentially arranged in the shell from top to bottom; the upper end of the liquid spraying block is rotatably arranged at the top of the shell, the liquid spraying block is driven by a motor, a belt wheel and a conveying belt which are arranged on the right side of the shell, a plurality of rollers are arranged between the liquid spraying block and the inner wall of the shell, and the rollers are used for supporting the liquid spraying block and ensuring the flexible rotation of the liquid spraying block; the liquid spraying block is of a hollow structure, a plurality of through holes are formed in the lower surface of the liquid spraying block, a guide rod is arranged below the liquid spraying block, a liquid guide pipe is arranged in the liquid spraying block and fixed at the bottom of the mixing module, and a scraper is arranged at the lower end of the liquid guide pipe; the spiral plate is arranged on the guide rod, the spiral plate is made of elastic material, and stirring holes are uniformly formed in the spiral plate; the smoke inlet pipe is arranged in the shell through a spring and communicated with the smoke inlet; the liquid guide plate is fixed in the shell and is of a stepped structure, a liquid storage tank communicated with the shell is arranged on the right side of the shell, and the liquid guide plate is used for discharging generated sulfuric acid into the liquid storage tank; the right side of the shell is provided with a controller, and the controller is used for controlling the motor to work.
When the device works, industrial flue gas is introduced into the smoke inlet pipe from the smoke inlet and enters the shell through the smoke inlet pipe, the flue gas moves upwards in the shell, at the moment, hydrogen peroxide and a stabilizing agent are mixed together through the mixing module, the hydrogen peroxide mixed with the stabilizing agent is conveyed into the liquid spraying block through the liquid guide pipe, at the moment, the controller controls the motor to work, the motor drives the liquid spraying block to rotate through the conveyor belt, the liquid spraying block rotates around the liquid guide pipe, the scraper at the lower end of the liquid guide pipe rotates relative to the liquid spraying block, the hydrogen peroxide is stirred, the hydrogen peroxide and the stabilizing agent are mixed more uniformly, and the hydrogen peroxide uniformly falls from through holes of the liquid spraying block; the ascending flue gas and the falling hydrogen peroxide are intersected at the spiral plate, the sulfur dioxide in the flue gas is converted into sulfuric acid by the hydrogen peroxide, the spiral plate rotates along with the guide rod to stir the falling hydrogen peroxide, so that the hydrogen peroxide is fully contacted with the flue gas, the sulfur dioxide in the flue gas is removed more cleanly, the purification effect of the flue gas is improved, the recovery rate of sulfur in the flue gas is improved, the yield of sulfuric acid is improved, the stirring effect of the spiral plate on the hydrogen peroxide is improved by the stirring holes formed in the spiral plate, the hydrogen peroxide is further fully contacted with the flue gas, the sulfur in the flue gas is further removed more cleanly, and the yield of the sulfuric acid is improved; the final sulphuric acid that generates passes through the drain board and discharges into the liquid storage tank, and the flue gas after the desulfurization passes through the outlet flue and discharges, and when ladder-shaped structure's drain board made sulphuric acid flow through from the drain board, the solid impurity deposit in the sulphuric acid was on the drain board, had made things convenient for subsequent clearance.
The mixing module comprises a hydrogen peroxide storage tank, a stabilizing agent storage tank and a mixing tube with a plurality of cross points, wherein the hydrogen peroxide and the stabilizing agent enter the mixing tube and are mixed in an opposite-flushing mode at the cross points of the mixing tube. The setting of a plurality of crosspoints of mixing the liquid pipe makes hydrogen peroxide and stabilizer at the crosspoint offset for hydrogen peroxide and stabilizer mix more evenly, avoided the too early catalytic decomposition of hydrogen peroxide, ensured sufficient hydrogen peroxide and flue gas mixing reaction, improved the desorption effect of the sulfur dioxide in the flue gas, improved the output of sulphuric acid.
The smoke inlet pipe structure is a spiral structure in a horizontal plane, and the lower end of the smoke inlet pipe is provided with a smoke exhaust hole along the direction of a spiral line; the lower end of the guide rod is provided with a cam, the cam is positioned in the inner ring of the spiral structure of the smoke inlet pipe, and the cam is used for extruding the inner ring of the smoke inlet pipe. The flue gas is discharged from the smoke vent of advancing tobacco pipe below, the guide arm rotates along with liquid spray piece together, make the cam rotate, make cam contact and extrusion advance the inner circle of tobacco pipe, thereby make helical structure advance the extension of tobacco pipe, when the cam breaks away from the contact with the inner circle of advancing the tobacco pipe, advance the tobacco pipe and resume initial state, thereby make the continuous expansion shrinkage of advancing the tobacco pipe and shake under the effect of spring, make the flue gas that sprays out more even, make the flue gas more quick simultaneously in the entering casing, and then make the flue gas quick and hydrogen peroxide contact production sulphuric acid, the work efficiency of the device is improved.
The extrusion ball is arranged on the guide rod through a spring, the extrusion ball is in contact with the upper end of the spiral plate, the spiral plate can slide up and down on the guide rod, and a baffle for blocking the spiral plate is arranged on the inner wall of the shell below the spiral plate. The spiral plate is when rotating along with the guide arm, and the extrusion ball is continuous to contact with the spiral plate and break away from for the spiral plate is continuous compression and recovery under the effect of extrusion ball and baffle, thereby makes the continuous shake of spiral plate, and then has improved the spiral plate and to hydrogen peroxide's stirring effect, makes hydrogen peroxide and flue gas contact more abundant, has improved sulfur dioxide's desorption rate in the flue gas, has improved the output of sulphuric acid.
The liquid guide plate is provided with arc blocks through springs, the number of the arc blocks is the same as that of the smoke discharge holes at the lower end of the smoke inlet pipe, the arc blocks are correspondingly distributed below the smoke discharge holes, and the arc blocks are used for reversing smoke. The flue gas is discharged from the smoke vent of advancing tobacco pipe lower extreme, and the arc piece has played the effect that blocks to the flue gas for turn into upward movement after the arc piece is strikeed to the flue gas of downward exhaust, avoided the flue gas to get into in the liquid reserve tank from the intercommunication position of liquid reserve tank with the casing, ensured the flue gas fully purified.
Articulated in the liquid storage tank have the closing plate, and the lower extreme and the casing outer wall of closing plate contact to the position that casing and closing plate contact is equipped with the draw-in groove, and the articulated department of closing plate is equipped with the torsional spring, and the torsional spring is used for making closing plate and draw-in groove contact. The mixed liquid of the sulfuric acid, the water and the residual hydrogen peroxide that generate gets into in the liquid storage tank to extrude the closing plate, make the closing plate break away from the contact with the draw-in groove on the casing, make mixed liquid get into the closing plate below, avoided mixed liquid to flow back to the casing in, improved the result of use of device.
The invention has the following beneficial effects:
1. according to the industrial flue gas desulfurization process, the sulfur dioxide in the industrial flue gas is removed through the industrial flue gas recycling device, the sulfur dioxide in the industrial flue gas is effectively removed, the removed sulfur dioxide is used for producing sulfuric acid, the environment is protected, resources are reasonably utilized, and the waste of the resources is avoided.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a front view of the industrial flue gas recycling apparatus of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a cross-sectional view B-B of FIG. 2;
FIG. 5 is a schematic view of the connection of the catheter of the present invention to the scraper;
in the figure: the device comprises a shell 1, a mixing module 2, a liquid spraying block 3, a spiral plate 4, a smoke inlet pipe 5, a liquid guide plate 6, a liquid storage tank 7, a baffle 8, a conveying belt 11, a roller 12, a hydrogen peroxide storage tank 21, a stabilizer storage tank 22, a liquid mixing pipe 23, a guide rod 31, a liquid guide pipe 32, a scraper 33, a cam 34, an extrusion ball 35, an arc-shaped block 61 and a sealing plate 71.
Detailed Description
The industrial flue gas desulfurization process according to an embodiment of the present invention is explained below using fig. 1 to 5;
as shown in fig. 1, fig. 2, fig. 3 and fig. 5, the industrial flue gas desulfurization process of the present invention comprises the following steps:
s1: performing dust removal treatment on the industrial flue gas by using an industrial flue gas dust removal device to remove solid particles in the industrial flue gas;
s2: the industrial flue gas subjected to dust removal in the S1 is introduced into an industrial flue gas recycling device by using a pipeline, a spray head is arranged in the pipeline to spray water mist on the industrial flue gas, sulfur dioxide in the industrial flue gas is removed by the industrial flue gas recycling device, and the water mist further removes dust in the industrial flue gas, so that the dust is prevented from entering the industrial flue gas recycling device, and meanwhile, the industrial flue gas is mixed with the water mist, so that the industrial flue gas is better contacted with hydrogen peroxide in the industrial flue gas recycling device, and the removal rate of the sulfur dioxide in the industrial flue gas is improved;
s3: the desulfurized industrial flue gas in the S2 is discharged through a pipeline, and an activated carbon layer is arranged in the pipeline and used for removing water mist in the industrial flue gas and hydrogen peroxide mixed in the industrial flue gas, so that the discharged industrial flue gas is drier, the industrial flue gas is rapidly discharged, and the pollution to the environment caused by the combination of water vapor in the industrial flue gas and dust in the air is avoided;
s4: the workers inspect the industrial flue gas discharged in the step S3, the workers discharge the industrial flue gas which meets the discharge standard, and the workers introduce the industrial flue gas which does not meet the discharge standard into the industrial flue gas recycling device again through a pipeline for secondary treatment, so that the environment is prevented from being harmed by the discharged industrial flue gas;
the industrial flue gas recycling device adopted in the S2 comprises a shell 1, wherein a flue gas inlet is formed in the left side of the shell 1, a flue gas outlet is formed in the top of the shell 1, a mixing module 2 is arranged above the shell 1, and the mixing module 2 is used for mixing hydrogen peroxide and a stabilizing agent together; a liquid spraying block 3, a spiral plate 4, a smoke inlet pipe 5 and a liquid guide plate 6 are sequentially arranged in the shell 1 from top to bottom; the upper end of the liquid spraying block 3 is rotatably arranged at the top of the shell 1, the liquid spraying block 3 is driven by a motor, a belt pulley and a conveyer belt 11 which are arranged on the right side of the shell 1, a plurality of idler wheels 12 are arranged between the liquid spraying block 3 and the inner wall of the shell 1, and the idler wheels 12 are used for supporting the liquid spraying block 3 and ensuring that the liquid spraying block 3 flexibly rotates; the liquid spraying block 3 is of a hollow structure, a plurality of through holes are formed in the lower surface of the liquid spraying block 3, a guide rod 31 is arranged below the liquid spraying block 3, a liquid guide pipe 32 is arranged in the liquid spraying block 3, the liquid guide pipe 32 is fixed to the bottom of the material mixing module 2, and a scraper 33 is arranged at the lower end of the liquid guide pipe 32; the spiral plate 4 is arranged on the guide rod 31, the spiral plate 4 is made of elastic material, and stirring holes are uniformly formed in the spiral plate 4; the smoke inlet pipe 5 is arranged in the shell 1 through a spring, and the smoke inlet pipe 5 is communicated with the smoke inlet; the liquid guide plate 6 is fixed in the shell 1, the liquid guide plate 6 is of a stepped structure, a liquid storage tank 7 communicated with the shell 1 is arranged on the right side of the shell 1, and the liquid guide plate 6 is used for discharging generated sulfuric acid into the liquid storage tank 7; and a controller is arranged on the right side of the shell 1 and is used for controlling the motor to work.
When the device works, industrial flue gas is introduced into the smoke inlet pipe 5 from the smoke inlet and enters the shell 1 through the smoke inlet pipe 5, the flue gas moves upwards in the shell 1, at the moment, hydrogen peroxide and a stabilizing agent are mixed together through the mixing module 2, the hydrogen peroxide mixed with the stabilizing agent is conveyed into the liquid spraying block 3 through the liquid guide pipe 32, at the moment, the controller controls the motor to work, the motor drives the liquid spraying block 3 to rotate through the conveyor belt, the liquid spraying block 3 rotates around the liquid guide pipe 32, the scraper 33 at the lower end of the liquid guide pipe 32 rotates relative to the liquid spraying block 3, the hydrogen peroxide is stirred, the mixing of the hydrogen peroxide and the stabilizing agent is more uniform, and the hydrogen peroxide is uniformly sprayed from through holes of the liquid spraying block 3; the ascending flue gas and the falling hydrogen peroxide are intersected at the spiral plate 4, the sulfur dioxide in the flue gas is converted into sulfuric acid by the hydrogen peroxide, the spiral plate 4 rotates along with the guide rod 31 to stir the falling hydrogen peroxide, so that the hydrogen peroxide is fully contacted with the flue gas, the sulfur dioxide in the flue gas is removed more cleanly, the purification effect of the flue gas is improved, the recovery rate of sulfur in the flue gas is improved, the yield of the sulfuric acid is improved, the stirring effect of the spiral plate 4 on the hydrogen peroxide is improved by the stirring holes formed in the spiral plate 4, the hydrogen peroxide is further fully contacted with the flue gas, and therefore the sulfur in the flue gas is removed more cleanly and the yield of the sulfuric acid is improved; during final sulphuric acid that generates discharged into liquid reserve tank 7 through drain 6, flue gas after the desulfurization was discharged through the outlet flue, and stepped structure's drain 6 makes sulphuric acid flow through on the drain 6, and the solid impurity deposit in the sulphuric acid has made things convenient for subsequent clearance on the drain 6.
As shown in fig. 2, the mixing module 2 includes a hydrogen peroxide storage tank 21, a stabilizer storage tank 22, and a mixing tube 23 having a plurality of crossing points, and hydrogen peroxide and a stabilizer are introduced into the mixing tube 23 and are mixed by impingement at the crossing points of the mixing tube 23. The setting of a plurality of crosspoints of mixing pipe 23 makes hydrogen peroxide and stabilizer offset in the crosspoint for hydrogen peroxide and stabilizer mix more evenly, have avoided the too early catalytic decomposition of hydrogen peroxide, have ensured sufficient hydrogen peroxide and flue gas mixing reaction, have improved the desorption effect of the sulfur dioxide in the flue gas, have improved the output of sulphuric acid.
As shown in fig. 4, the structure of the smoke inlet pipe 5 is a spiral structure in the horizontal plane, and the lower end of the smoke inlet pipe 5 is provided with a smoke exhaust hole along the spiral line; the lower end of the guide rod 31 is provided with a cam 34, the cam 34 is positioned in the inner ring of the spiral structure of the smoke inlet pipe 5, and the cam 34 is used for extruding the inner ring of the smoke inlet pipe 5. The flue gas is discharged from the smoke vent below the smoke inlet pipe 5, the guide rod 31 rotates along with the liquid spraying block 3, the cam 34 rotates, the cam 34 contacts and presses the inner ring of the smoke inlet pipe 5, the smoke inlet pipe 5 of the spiral structure expands, when the cam 34 is separated from the inner ring of the smoke inlet pipe 5, the smoke inlet pipe 5 recovers the initial state, the smoke inlet pipe 5 continuously expands, contracts and shakes under the action of the spring, the sprayed flue gas is more uniform, meanwhile, the flue gas is enabled to enter the shell 1 more quickly, the flue gas is enabled to be in contact with hydrogen peroxide quickly to generate sulfuric acid, and the working efficiency of the device is improved.
As shown in fig. 2, an extrusion ball 35 is mounted on the guide rod 31 through a spring, the extrusion ball 35 contacts with the upper end of the spiral plate 4, the spiral plate 4 can slide up and down on the guide rod 31, and a baffle 8 for blocking the spiral plate 4 is arranged on the inner wall of the casing 1 below the spiral plate 4. Spiral plate 4 is when rotating along with guide arm 31, and extrusion ball 35 is continuous to contact with spiral plate 4 and break away from for spiral plate 4 is continuous compression and recovery under extrusion ball 35 and baffle 8's effect, thereby make the continuous shake of spiral plate 4, and then improved spiral plate 4 and to the stirring effect of hydrogen peroxide, make hydrogen peroxide and flue gas contact more abundant, improved sulfur dioxide's desorption rate in the flue gas, improved the output of sulphuric acid.
As shown in fig. 2, the liquid guide plate 6 is provided with arc blocks 61 through springs, the number of the arc blocks 61 is the same as the number of the smoke holes at the lower end of the smoke inlet pipe 5, the arc blocks 61 are correspondingly distributed below the smoke holes, and the arc blocks 61 are used for reversing the smoke. The flue gas is discharged from the smoke vent of advancing tobacco pipe 5 lower extreme, and arc piece 61 has played the effect that blocks to the flue gas for turn into upward movement after the arc piece 61 is strikeed to the flue gas of downward exhaust, avoided the flue gas to get into liquid reserve tank 7 from the intercommunication position of liquid reserve tank 7 with casing 1 in, ensured the flue gas and fully purified.
As shown in fig. 2, a sealing plate 71 is hinged in the liquid storage tank 7, the lower end of the sealing plate 71 contacts with the outer wall of the housing 1, a clamping groove is formed in a contact part of the housing 1 and the sealing plate 71, and a torsion spring is arranged at the hinged part of the sealing plate 71 and used for enabling the sealing plate 71 to contact with the clamping groove. The mixed liquid of the sulfuric acid, the water and the residual hydrogen peroxide that generate gets into liquid reserve tank 7 to extrude closing plate 71, make closing plate 71 and the draw-in groove on the casing 1 break away from the contact, make mixed liquid get into closing plate 71 below, avoided mixed liquid to flow back to in the casing 1, improved the result of use of device.
The specific operation flow is as follows:
when in work, the industrial flue gas is introduced into the smoke inlet pipe 5 from the smoke inlet and enters the shell 1 through the smoke inlet pipe 5, the flue gas moves upwards in the housing 1, at which point the hydrogen peroxide and the stabilizing agent are passed through the liquid-mixing pipe 23, the arrangement of the plurality of crossing points of the liquid mixing pipe 23 enables the hydrogen peroxide and the stabilizing agent to be oppositely flushed at the crossing points, so that the hydrogen peroxide and the stabilizing agent are mixed, the premature catalytic decomposition of the hydrogen peroxide is avoided, and the hydrogen peroxide mixed with the stabilizing agent is delivered into the liquid spraying block 3 through the liquid guide pipe 32, at the moment, the controller controls the motor to work, so that the motor drives the liquid spray block 3 to rotate through the conveyor belt, the liquid spray block 3 rotates around the liquid guide pipe 32, the scraper 33 at the lower end of the liquid guide pipe 32 rotates relative to the liquid spray block 3, stirring the hydrogen peroxide to ensure that the hydrogen peroxide and the stabilizing agent are mixed more uniformly and the hydrogen peroxide uniformly spills from the through holes of the liquid spraying block 3; the ascending flue gas and the falling hydrogen peroxide are intersected at the spiral plate 4, the sulfur dioxide in the flue gas is converted into sulfuric acid by the hydrogen peroxide, the spiral plate 4 rotates along with the guide rod 31 to stir the falling hydrogen peroxide, so that the hydrogen peroxide is fully contacted with the flue gas, the sulfur dioxide in the flue gas is removed more cleanly, the purification effect of the flue gas is improved, the recovery rate of sulfur in the flue gas is improved, the yield of the sulfuric acid is improved, the stirring effect of the spiral plate 4 on the hydrogen peroxide is improved by the stirring holes formed in the spiral plate 4, the hydrogen peroxide is further fully contacted with the flue gas, and therefore the sulfur in the flue gas is removed more cleanly and the yield of the sulfuric acid is improved; during final sulphuric acid that generates discharged into liquid reserve tank 7 through drain 6, flue gas after the desulfurization was discharged through the outlet flue, and stepped structure's drain 6 makes sulphuric acid flow through on the drain 6, and the solid impurity deposit in the sulphuric acid has made things convenient for subsequent clearance on the drain 6.
While one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention.
Industrial applicability
According to the invention, the process can effectively treat the industrial flue gas and has high treatment efficiency, so that the industrial flue gas desulfurization process is useful in the technical field of industrial flue gas treatment.
Claims (1)
1. An industrial flue gas desulfurization process is characterized in that: the process comprises the following steps:
s1: performing dust removal treatment on the industrial flue gas by using an industrial flue gas dust removal device to remove solid particles in the industrial flue gas;
s2: introducing the industrial flue gas subjected to dust removal in the S1 into an industrial flue gas recycling device by using a pipeline, arranging a spray head in the pipeline to spray water mist on the industrial flue gas, and removing sulfur dioxide in the industrial flue gas by using the industrial flue gas recycling device;
s3: discharging the desulfurized industrial flue gas from the S2 through a pipeline, and arranging an activated carbon layer in the pipeline, wherein the activated carbon layer is used for removing water mist in the industrial flue gas and hydrogen peroxide mixed in the industrial flue gas;
s4: the workers inspect the industrial flue gas discharged in the step S3, discharge the industrial flue gas which meets the discharge standard, and introduce the industrial flue gas which does not meet the discharge standard into the industrial flue gas recycling device again for secondary treatment through a pipeline;
the industrial flue gas recycling device adopted in the S2 comprises a shell (1), wherein a smoke inlet is formed in the left side of the shell (1), a smoke outlet is formed in the top of the shell (1), a mixing module (2) is arranged above the shell (1), and the mixing module (2) is used for mixing hydrogen peroxide and a stabilizing agent together; a liquid spraying block (3), a spiral plate (4), a smoke inlet pipe (5) and a liquid guide plate (6) are sequentially arranged in the shell (1) from top to bottom; the upper end of the liquid spraying block (3) is rotatably mounted at the top of the shell (1), the liquid spraying block (3) is driven by a motor, a belt pulley and a conveying belt (11) which are arranged on the right side of the shell (1), a plurality of rollers (12) are arranged between the liquid spraying block (3) and the inner wall of the shell (1), and the rollers (12) are used for supporting the liquid spraying block (3) and ensuring that the liquid spraying block (3) flexibly rotates; the liquid spraying block (3) is of a hollow structure, a plurality of through holes are formed in the lower surface of the liquid spraying block (3), a guide rod (31) is arranged below the liquid spraying block (3), a liquid guide pipe (32) is arranged in the liquid spraying block (3), the liquid guide pipe (32) is fixed to the bottom of the material mixing module (2), and a scraper (33) is arranged at the lower end of the liquid guide pipe (32); the spiral plate (4) is arranged on the guide rod (31), the spiral plate (4) is made of elastic material, and stirring holes are uniformly formed in the spiral plate (4); the smoke inlet pipe (5) is arranged in the shell (1) through a spring, and the smoke inlet pipe (5) is communicated with the smoke inlet; the liquid guide plate (6) is fixed in the shell (1), the liquid guide plate (6) is of a stepped structure, a liquid storage tank (7) communicated with the shell (1) is arranged on the right side of the shell (1), and the liquid guide plate (6) is used for discharging generated sulfuric acid into the liquid storage tank (7); the controller is arranged on the right side of the shell (1) and used for controlling the motor to work;
the mixing module (2) comprises a hydrogen peroxide storage tank (21), a stabilizing agent storage tank (22) and a mixing pipe (23) with a plurality of cross points, wherein hydrogen peroxide and the stabilizing agent enter the mixing pipe (23) and are mixed in an opposite flushing mode at the cross points of the mixing pipe (23);
the structure of the smoke inlet pipe (5) is a spiral structure in a horizontal plane, and the lower end of the smoke inlet pipe (5) is provided with a smoke exhaust hole along the direction of a spiral line; the lower end of the guide rod (31) is provided with a cam (34), the cam (34) is positioned in the inner ring of the spiral structure of the smoke inlet pipe (5), and the cam (34) is used for extruding the inner ring of the smoke inlet pipe (5);
an extrusion ball (35) is mounted on the guide rod (31) through a spring, the extrusion ball (35) is in contact with the upper end of the spiral plate (4), the spiral plate (4) can slide up and down on the guide rod (31), and a baffle (8) for blocking the spiral plate (4) is arranged on the inner wall of the shell (1) below the spiral plate (4);
arc-shaped blocks (61) are mounted on the liquid guide plate (6) through springs, the number of the arc-shaped blocks (61) is the same as that of smoke discharge holes in the lower end of the smoke inlet pipe (5), the arc-shaped blocks (61) are correspondingly distributed below the smoke discharge holes, and the arc-shaped blocks (61) are used for reversing smoke;
articulated in liquid reserve tank (7) have closing plate (71), the lower extreme and casing (1) outer wall contact of closing plate (71), and the position of casing (1) and closing plate (71) contact is equipped with the draw-in groove, and the articulated department of closing plate (71) is equipped with the torsional spring, and the torsional spring is used for making closing plate (71) and draw-in groove contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811350744.0A CN109173681B (en) | 2018-11-14 | 2018-11-14 | Industrial flue gas desulfurization process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811350744.0A CN109173681B (en) | 2018-11-14 | 2018-11-14 | Industrial flue gas desulfurization process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109173681A CN109173681A (en) | 2019-01-11 |
| CN109173681B true CN109173681B (en) | 2021-03-23 |
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| CN107158985A (en) * | 2017-06-09 | 2017-09-15 | 张思银 | A kind of microballoon mulser for carrying out uniform stirring |
| CN207667404U (en) * | 2017-11-16 | 2018-07-31 | 襄阳先天下环保设备有限公司 | A kind of recycling device of coloured industry flue gas desulfurization Sulphuric acid |
| CN108355528A (en) * | 2018-02-28 | 2018-08-03 | 苏州市吴中区双龙油漆涂料有限公司 | A kind of coating self- poking arrangement |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3953578A (en) * | 1972-02-04 | 1976-04-27 | Oxysynthese | Method for purification of industrial flue gases |
| CN105363330A (en) * | 2014-08-31 | 2016-03-02 | 天津渤大硫酸工业有限公司 | Sulfuric acid tail gas desulphurization device |
| CN204307920U (en) * | 2014-12-19 | 2015-05-06 | 汪培杰 | Construction waste recycling device |
| CN204619726U (en) * | 2015-05-11 | 2015-09-09 | 南京澄天环境科学研究院有限公司 | Copper making ring collection flue gas desulfur device |
| CN107158985A (en) * | 2017-06-09 | 2017-09-15 | 张思银 | A kind of microballoon mulser for carrying out uniform stirring |
| CN207667404U (en) * | 2017-11-16 | 2018-07-31 | 襄阳先天下环保设备有限公司 | A kind of recycling device of coloured industry flue gas desulfurization Sulphuric acid |
| CN108355528A (en) * | 2018-02-28 | 2018-08-03 | 苏州市吴中区双龙油漆涂料有限公司 | A kind of coating self- poking arrangement |
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| CN109173681A (en) | 2019-01-11 |
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