Purification device for flue gas generated by secondary lead smelting

Abstract

The invention relates to the technical field of secondary lead smelting, and discloses a purification device for flue gas generated by secondary lead smelting, the purification device comprises a desulfurization mixing mechanism, a flue gas dust filtering mechanism is arranged on one side of the desulfurization mixing mechanism, a one-way flow guide mechanism is arranged in the flue gas dust filtering mechanism, and the one-way flow guide mechanism is arranged on the other side of the desulfurization mixing mechanism; a turbulent flow anti-deposition mechanism and bubble blocking mechanisms are arranged in the desulfurization mixing mechanism, the bubble blocking mechanisms are located on the two sides of the turbulent flow anti-deposition mechanism, and a pump liquid spraying mechanism is arranged between the two bubble blocking mechanisms. According to the purification device for the flue gas generated by secondary lead smelting, the flue gas can be directly guided into slurry through cooperation of the desulfurization mixing mechanism and the flue gas dust filtering mechanism, so that the flue gas continuously disturbs the slurry, and meanwhile, the slurry is continuously stirred through the turbulent flow anti-deposition mechanism, so that solid deposition of the slurry is further avoided.

Description

Technical Field

[0001] The invention relates to the technical field of secondary lead smelting, and in particular to a device for purifying fume generated by secondary lead smelting. Background Art

[0002] Recycled lead refers to the lead obtained by recycling and reusing waste lead products. The recycled lead smelting process will produce waste gas containing sulfur dioxide.

[0003] Conventional sulfur dioxide treatment uses the gypsum method to carry out desulfurization in a desulfurization tower. Slurry poisoning may occur during the desulfurization process, which is mainly manifested in a sharp decrease in desulfurization efficiency, slurry bubbling and overflow, slurry "poisoning" and difficulty in dehydrating gypsum slurry, which will form solid deposits. The conventional solution is to artificially increase the number of oxidation fans when this happens to improve the oxidation effect. However, the smoke inlet of the existing desulfurization tower is generally located above the slurry, and it is difficult to enter the slurry to form disturbance during operation. When the slurry is "poisoned", the less disturbed slurry makes solid deposition more likely to occur. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a device for purifying flue gas generated by secondary lead smelting, which solves the problems mentioned in the above background.

[0005] The present invention provides the following technical solution: a device for purifying flue gas generated by secondary lead smelting, comprising: a desulfurization mixing mechanism, a flue gas dust filtering mechanism is arranged on one side of the desulfurization mixing mechanism, a one-way flow guide mechanism is arranged inside the flue gas dust filtering mechanism, a turbulence anti-deposition mechanism and a bubble blocking mechanism are respectively arranged inside the desulfurization mixing mechanism, and the bubble blocking mechanisms are respectively located on both sides of the turbulence anti-deposition mechanism, and a pump liquid spraying mechanism is arranged between the two bubble blocking mechanisms.

[0006] Preferably, the desulfurization mixing mechanism includes a slurry pool, a guide curved surface, a slurry discharge and smoke inlet three-way pipe, a slurry discharge solenoid valve, a lower smoke inlet elbow, a smoke inlet one-way valve and an upper smoke inlet elbow. The guide curved surface is arranged on the inner bottom wall of the slurry pool, the slurry discharge and smoke inlet three-way pipe is fixedly installed at the bottom end of the slurry pool, the slurry discharge solenoid valve and the lower smoke inlet elbow are respectively fixedly installed at the two ends of the slurry discharge and smoke inlet three-way pipe, the smoke inlet one-way valve is fixedly installed at the input end of the lower smoke inlet elbow, and the upper smoke inlet elbow is fixedly installed at the input end of the smoke inlet one-way valve.

[0007] Preferably, the desulfurization mixing mechanism also includes a mixing tower, an external top cover, a flow equalizing plate and a demister, the mixing tower is fixedly connected to the top of the slurry pool, the external top cover is fixedly connected to the top of the mixing tower, the flow equalizing plate and the demister are both fixedly installed inside the mixing tower, the demister is located at the top of the mixing tower, and the flow equalizing plate is located at the bottom of the mixing tower.

[0008] Preferably, the smoke dust filtering mechanism includes a connecting frame, a dust filter cartridge, a cartridge outlet, a flange cover, a smoke pump, a mesh cartridge, a supporting mesh cover, a filter cartridge and filter material. The dust filter cartridge is fixedly mounted on the surface of the slurry pool via the connecting frame, the cartridge outlet is integrally arranged on the surface of the dust filter cartridge, the flange cover is fixedly mounted on the top of the dust filter cartridge by bolts, the smoke pump is fixedly mounted on the bottom end of the dust filter cartridge, the mesh cartridge is slidably connected to the inner wall of the dust filter cartridge, the supporting mesh cover is fixedly connected to the inner bottom wall of the mesh cartridge, the filter cartridge is slidably connected to the inner wall of the mesh cartridge, and the filter material is filled between the supporting mesh cover, the filter cartridge and the flange cover.

[0009] Preferably, the one-way flow guide mechanism includes a flow block, a fixing ring, a rubber sheet, a spring sheet, a limiting pin and a passing port, the flow block is fixedly connected to the inner wall of the supporting mesh cover, the fixing ring is fixedly connected to the upper surface of the flow block, the spring sheet is integrally arranged on the inner wall of the fixing ring, the rubber sheet is fixedly fitted to the lower surfaces of the fixing ring and the spring sheet, the limiting pin is fixedly connected in the middle of the flow block, and a movable gap is provided between the limiting pin and the spring sheet, and the passing port is opened on both sides of the flow block, and the passing port is located below the spring sheet.

[0010] Preferably, the spoiler and anti-deposition mechanism includes a sealing cover, a sealing plate, a spoiler motor, a spoiler shaft, a driving wheel, a driven wheel, a belt and a centrifugal impeller. The sealing cover is fixedly connected to the inside of the slurry pool, the sealing plate is fixedly connected to the inner wall of the sealing cover, the spoiler motor is fixedly installed on the surface of the sealing cover, the spoiler shaft is rotatably connected to the bottom of the sealing cover, the driving wheel is fixedly installed on the output end of the spoiler motor, the driven wheel is fixedly installed on the surface of the spoiler shaft, the belt is installed between the driving wheel and the driven wheel, and the centrifugal impeller is fixedly installed on the bottom end of the spoiler shaft.

[0011] Preferably, the centrifugal impeller includes an upper cover, centrifugal blades, a lower cover ring and a reinforcement ring, and there are multiple centrifugal blades, and the multiple centrifugal blades are fixedly connected between the upper cover and the lower cover ring, and the reinforcement ring is fixedly inserted between the multiple centrifugal blades.

[0012] Preferably, the bubble blocking mechanism includes a support block, a bubble baffle, a packaging cover frame, an interception net and a lower multi-way pipe, the number of the support blocks is two, and the two support blocks are respectively fixedly connected to the inner walls on both sides of the slurry pool, the number of the bubble baffles is two, and the two bubble baffles are both fixedly connected to the inside of the slurry pool, and the two bubble baffles are respectively located on one side of the two support blocks, and a flow gap is provided between the two bubble baffles and the inner wall of the slurry pool, the packaging cover frame is respectively fixedly connected to the surfaces of the two support blocks, the interception net is fixedly connected between the packaging cover frame and the support block, and the lower multi-way pipe is respectively fixedly connected to one side of the two support blocks.

[0013] Preferably, the pump liquid spraying mechanism includes a four-way pipe, a water inlet solenoid valve, a shotcrete solenoid valve, a water inlet pump and a shotcrete pump, the four-way pipe is fixedly connected between the two lower multi-way pipes, the water inlet solenoid valve and the shotcrete solenoid valve are fixedly installed at the bottom and top of the four-way pipe respectively, the water inlet pump is fixedly installed at one end of the water inlet solenoid valve, and the shotcrete pump is fixedly installed at one end of the shotcrete solenoid valve.

[0014] Preferably, the pump liquid spraying mechanism also includes a spraying tee, a support plate, an upper multi-way pipe, an inner pipe and an atomizing nozzle, the spraying tee is fixedly installed on the output end of the spray pump, the support plates are respectively fixedly connected to the inner walls on both sides of the mixing tower, the upper multi-way pipes are respectively fixedly connected to the inside of the two support plates, the inner pipe is fixedly connected between the two upper multi-way pipes, and the number of the inner pipes is multiple, and the atomizing nozzle is fixedly installed on the surface of the inner pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The device for purifying flue gas generated by the smelting of recycled lead can directly introduce the flue gas into the slurry through the cooperation of the desulfurization mixing mechanism and the flue gas dust filtering mechanism, by means of the arranged desulfurization mixing mechanism, the flue gas dust filtering mechanism, the one-way flow guiding mechanism, the turbulence anti-deposition mechanism, the bubble blocking mechanism and the pump liquid spraying mechanism, so that the flue gas continuously disturbs the slurry, and at the same time continuously stirs the slurry through the turbulence anti-deposition mechanism, so as to further avoid the formation of solid deposits in the slurry.

[0016] The device for purifying flue gas generated by secondary lead smelting is equipped with a slurry pool, a guide curved surface, a slurry discharge and smoke inlet three-way pipe, a slurry discharge solenoid valve, a lower smoke inlet elbow, a smoke inlet non-return valve, an upper smoke inlet elbow, a mixing tower, an external top cover, a flow equalizing plate and a demister, so as to be able to directly guide the flue gas into the bottom of the slurry pool. When in use, the slurry is continuously disturbed by the rising disturbance of the flue gas, thereby preventing the slurry from easily forming deposits.

[0017] The device for purifying flue gas generated by secondary lead smelting is equipped with a connecting frame, a dust filter cartridge, a cartridge outlet, a flange cover, a smoke pump, a mesh cartridge, a supporting mesh cover, a filter cartridge and a smoke filter material, so that most of the solid particles in the flue gas can be intercepted and filtered through the filter cartridge and the smoke filter material before the flue gas is desulfurized, thereby reducing the deposition of solid particles in the flue gas in the slurry pool.

[0018] The device for purifying flue gas generated by secondary lead smelting is equipped with a flow block, a fixing ring, a rubber sheet, a spring, a limit pin and a through-port to ensure the conduction of the incoming flue gas, intercept the refluxed flue gas and ensure that the filtered solid particles can remain in the dust filter cartridge waiting for subsequent cleaning.

[0019] The device for purifying flue gas generated by the smelting of secondary lead is provided with a sealing cover, a sealing plate, a spoiler motor, a spoiler shaft, a driving wheel, a driven wheel, a belt and a centrifugal impeller, so that the centrifugal impeller can be actively driven to rotate by the spoiler motor, and the rotating centrifugal impeller forms vertical and horizontal disturbances on the slurry, thereby further improving the spoiler effect, and by controlling the spoiler motor, the control effect of the spoiler intensity is improved.

[0020] The device for purifying flue gas generated by secondary lead smelting is equipped with a support block, a bubble baffle, a packaging cover frame, an interception net and a lower multi-way pipe, so that bubbles can be intercepted by the bubble baffle to prevent bubbles carrying sulfur dioxide from being pumped, thereby ensuring that most of the sulfur dioxide can be absorbed. At the same time, the interception net can block the sedimentation blocks to ensure that they are cut or intercepted to avoid pipeline blockage.

[0021] The device for purifying flue gas generated by the smelting of recycled lead is equipped with a four-way pipe, a water inlet solenoid valve, a shotcrete solenoid valve, a water inlet pump, a shotcrete pump, a spraying tee pipe, a support plate, an upper multi-way pipe, an internal pipe and an atomizing nozzle, so that the slurry can be pumped by the shotcrete pump and sprayed by the atomizing nozzle to ensure that the slurry is in full contact with sulfur dioxide, and the interception net can be loaded or flushed by the water inlet pump to ensure smooth flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a bottom view of the present invention; Figure 3 It is the main cross-sectional view of the present invention; Figure 4 It is a side sectional view of the present invention; Figure 5 It is a schematic diagram of the connection structure between the bubble blocking mechanism and the pump liquid spraying mechanism of the present invention; Figure 6 This is a schematic diagram of the structure of the pump liquid spraying mechanism of the present invention; Figure 7 It is a structural schematic diagram of the location of the smoke dust filtering mechanism of the present invention; Figure 8 This is a schematic diagram of the structure of the spoiler and anti-deposition mechanism of the present invention; Fig. 9 This is a schematic diagram of the internal explosion structure of the spoiler and anti-deposition mechanism of the present invention; Fig.10 This is a schematic diagram of the structure of the smoke dust filtering mechanism of the present invention; Fig.11 It is a side sectional view of the smoke dust filtering mechanism of the present invention; Fig.12 This is a schematic diagram of the internal explosion structure of the smoke dust filter mechanism of the present invention; Fig.13This is a schematic diagram of the structure of the one-way flow guide mechanism of the present invention; Fig.14 It is a side sectional view of the one-way flow guide mechanism of the present invention.

[0023] In the figure: 101, slurry pool; 102, guide curved surface; 103, slurry discharge smoke inlet three-way pipe; 104, slurry discharge solenoid valve; 105, lower smoke inlet elbow; 106, smoke inlet one-way valve; 107, upper smoke inlet elbow; 108, mixing tower; 109, external top cover; 110, flow equalizing plate; 111, demister; 201, connecting frame; 202, dust filter cartridge; 203, cartridge outlet; 204, flange cover; 205, smoke pump; 206, mesh cylinder; 207, support mesh cover; 208, filter cartridge; 209, smoke filter material; 301, flow block; 302, fixing ring; 303, rubber sheet; 304, spring sheet; 305, smoke pump; 206, mesh cylinder; 207, support mesh cover; 208, filter cartridge; 209, smoke filter material; 301, flow block; 302, fixing ring; 303, rubber sheet; 304, spring sheet; 305, smoke pump; 306, mesh cylinder; 307, support mesh cover; 308, filter cartridge; 3 ... 5. Limiting nail; 306. Passing port; 401. Sealing cover; 402. Sealing plate; 403. Turbine motor; 404. Turbine shaft; 405. Driving wheel; 406. Driven wheel; 407. Belt; 408. Centrifugal impeller; 501. Support block; 502. Bubble baffle; 503. Packaging cover frame; 504. Intercepting net; 505. Lower multi-way pipe; 601. Four-way pipe; 602. Water inlet solenoid valve; 603. Spraying solenoid valve; 604. Water inlet pump; 605. Spraying pump; 606. Spraying three-way pipe; 607. Support plate; 608. Upper multi-way pipe; 609. Internal pipe; 610. Atomizing nozzle. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-14 , a purification device for flue gas generated by secondary lead smelting, comprising: a desulfurization mixing mechanism, a flue gas dust filtering mechanism is arranged on one side of the desulfurization mixing mechanism, a unidirectional flow guiding mechanism is arranged inside the flue gas dust filtering mechanism, a turbulence anti-deposition mechanism and a bubble blocking mechanism are respectively arranged inside the desulfurization mixing mechanism, and the bubble blocking mechanism is respectively located on both sides of the turbulence anti-deposition mechanism, and a pump liquid spraying mechanism is arranged between the two bubble blocking mechanisms. Through the desulfurization mixing mechanism, the flue gas dust filtering mechanism, the unidirectional flow guiding mechanism, the turbulence anti-deposition mechanism, the bubble blocking mechanism and the pump liquid spraying mechanism, the flue gas can be directly introduced into the slurry through the cooperation of the desulfurization mixing mechanism and the flue gas dust filtering mechanism, so that the flue gas continuously disturbs the slurry, and at the same time, the slurry is continuously stirred by the turbulence anti-deposition mechanism, so as to further avoid the formation of solid deposition in the slurry.

[0026] Among them; the desulfurization mixing mechanism includes a slurry pool 101, a guide curved surface 102, a slurry discharge and smoke inlet three-way pipe 103, a slurry discharge solenoid valve 104, a lower smoke inlet elbow 105, a smoke inlet one-way valve 106 and an upper smoke inlet elbow 107, the guide curved surface 102 is arranged on the inner bottom wall of the slurry pool 101, the slurry discharge and smoke inlet three-way pipe 103 is fixedly installed at the bottom end of the slurry pool 101, the slurry discharge solenoid valve 104 and the lower smoke inlet elbow 105 are respectively fixedly installed at both ends of the slurry discharge and smoke inlet three-way pipe 103, the smoke inlet one-way valve 106 is fixedly installed at the input end of the lower smoke inlet elbow 105, and the upper smoke inlet elbow 107 is fixedly installed at the input end of the smoke inlet one-way valve 106.

[0027] The desulfurization mixing mechanism further includes a mixing tower 108, an external top cover 109, a flow equalizing plate 110 and a demister 111. The mixing tower 108 is fixedly connected to the top of the slurry pool 101, the external top cover 109 is fixedly connected to the top of the mixing tower 108, the flow equalizing plate 110 and the demister 111 are both fixedly installed inside the mixing tower 108, and the demister 111 is located at the top of the mixing tower 108, and the flow equalizing plate 110 is located at the bottom of the mixing tower 108, through The slurry pool 101, the guide curved surface 102, the slurry discharge smoke inlet three-way pipe 103, the slurry discharge solenoid valve 104, the lower smoke inlet elbow 105, the smoke inlet one-way valve 106, the upper smoke inlet elbow 107, the mixing tower 108, the external top cover 109, the flow equalizing plate 110 and the demister 111 are arranged so that the smoke can be directly introduced into the bottom of the slurry pool 101. When in use, the slurry is continuously disturbed by the rising disturbance of the smoke, thereby preventing the slurry from easily forming sediments. The demister 111 It is an important part of the desulfurization tower. The function of the demister 111 is to capture the mist particles and slurry droplets entrained in the flue gas during the spray absorption process. The efficiency of the demister 111 is not only related to its own structure, but also to the weight and particle size of the mist particles. The nozzle atomization particle size is related to the viscosity of the absorption liquid, the spray claw force and the nozzle structure. The flow equalizer 110, also known as the flow distribution plate, is a fluid mechanical equipment used for fluid kinetic energy conversion. Its main function is to disperse the liquid or gas from a pipeline into multiple fluids, and at the same time make each branch component smooth and unobstructed, so that the liquid or gas can be evenly distributed to each channel or pipeline, ensuring that the flow in each channel is basically the same. The flow equalizer 110 is composed of a series of cylindrical metal rods, which are respectively fixed between the diameter of the distribution pipe and the diameter of the multi-port pipe. When the liquid or gas passes through the distribution pipe, it will be dispersed due to the obstruction of the rods between the diverter plates, and then evenly distributed to the multi-port pipe.

[0028] The smoke dust filter mechanism includes a connecting frame 201, a dust filter cartridge 202, a cartridge outlet 203, a flange cover 204, a smoke pump 205, a net cartridge 206, a support mesh cover 207, a filter cartridge 208 and a smoke filter material 209. The filter cartridge 202 is fixedly mounted on the surface of the slurry pool 101 through the connecting frame 201, the cartridge outlet 203 is integrally arranged on the surface of the filter cartridge 202, the flange cover 204 is fixedly mounted on the top of the filter cartridge 202 by bolts, the smoke pump 205 is fixedly mounted on the bottom of the filter cartridge 202, the net cartridge 206 is slidably connected to the inner wall of the filter cartridge 202, and the support mesh cover 207 is fixedly connected to the filter cartridge 208. On the inner bottom wall of the mesh cylinder 206, the filter cylinder 208 is slidably connected to the inner wall of the mesh cylinder 206, and the filter material 209 is filled between the supporting mesh cover 207, the filter cylinder 208 and the flange cover 204. Through the arranged connecting frame 201, dust filter cylinder 202, cylinder outlet 203, flange cover 204, smoke pump 205, mesh cylinder 206, supporting mesh cover 207, filter cylinder 208 and filter material 209, most of the solid particles in the flue gas can be intercepted and filtered by the filter cylinder 208 and the filter material 209 before flue gas desulfurization, so as to reduce the deposition of solid particles in the flue gas in the slurry pool 101.

[0029] Among them, the one-way flow guide mechanism includes a flow block 301, a fixed ring 302, a rubber sheet 303, a spring 304, a limit pin 305 and a through port 306, the flow block 301 is fixedly connected to the inner wall of the support mesh cover 207, the fixed ring 302 is fixedly connected to the upper surface of the flow block 301, the spring 304 is integrally arranged on the inner wall of the fixed ring 302, the rubber sheet 303 is fixedly attached to the lower surface of the fixed ring 302 and the spring 304, the limit pin 305 is fixedly connected to the through block 301 In the middle, a movable gap is set between the limiting nail 305 and the spring piece 304, and the through port 306 is opened on both sides of the flow block 301, and the through port 306 is located below the spring piece 304. Through the set flow block 301, fixing ring 302, rubber sheet 303, spring piece 304, limiting nail 305 and through port 306, it is possible to ensure that the incoming flue gas is conducted, intercept the backflow of flue gas, and ensure that the filtered solid particles can remain in the dust filter cartridge 202 waiting for subsequent cleaning.

[0030] Among them; the spoiler and anti-deposition mechanism includes a sealing cover 401, a sealing plate 402, a spoiler motor 403, a spoiler shaft 404, a driving wheel 405, a driven wheel 406, a belt 407 and a centrifugal impeller 408. The sealing cover 401 is fixedly connected to the inside of the slurry pool 101, the sealing plate 402 is fixedly connected to the inner wall of the sealing cover 401, the spoiler motor 403 is fixedly installed on the surface of the sealing cover 401, the spoiler shaft 404 is rotatably connected to the bottom of the sealing cover 401, the driving wheel 405 is fixedly installed on the output end of the spoiler motor 403, the driven wheel 406 is fixedly installed on the surface of the spoiler shaft 404, the belt 407 is installed between the driving wheel 405 and the driven wheel 406, and the centrifugal impeller 408 is fixedly installed at the bottom of the spoiler shaft 404.

[0031] Among them; the centrifugal impeller 408 includes an upper cover, centrifugal blades, a lower cover ring and a reinforcement ring, and the number of centrifugal blades is multiple, and the multiple centrifugal blades are fixedly connected between the upper cover and the lower cover ring, and the reinforcement ring is fixedly inserted between the multiple centrifugal blades, through the setting of the sealing cover 401, the sealing plate 402, the spoiler motor 403, the spoiler shaft 404, the driving wheel 405, the driven wheel 406, the belt 407 and the centrifugal impeller 408, so that the centrifugal impeller 408 can be actively driven to rotate by the spoiler motor 403, and the rotating centrifugal impeller 408 forms vertical and horizontal disturbances on the slurry, further improving the spoiler effect, and by controlling the spoiler motor 403, the control effect of the spoiler intensity is improved.

[0032] Wherein; the bubble blocking mechanism includes a support block 501, a bubble baffle 502, a packaging cover frame 503, an interception net 504 and a lower multi-way pipe 505, the number of the support block 501 is two, and the two support blocks 501 are respectively fixedly connected to the inner walls on both sides of the slurry pool 101, the number of the bubble baffle 502 is two, and the two bubble baffles 502 are fixedly connected to the inside of the slurry pool 101, and the two bubble baffles 502 are respectively located on one side of the two support blocks 501, and a flow gap is set between the two bubble baffles 502 and the inner side wall of the slurry pool 101, and the packaging cover frame 503 is respectively It is fixedly connected to the surfaces of the two support blocks 501, the interception net 504 is fixedly connected between the packaging cover frame 503 and the support block 501, and the lower multi-way pipe 505 is respectively fixedly connected to one side of the two support blocks 501. Through the support blocks 501, bubble baffles 502, the packaging cover frame 503, the interception net 504 and the lower multi-way pipe 505, bubbles can be intercepted by the bubble baffles 502 to prevent bubbles carrying sulfur dioxide from being pumped, thereby ensuring that most of the sulfur dioxide can be absorbed. At the same time, the interception net 504 can block the sedimentation block to prevent the pipeline from being blocked.

[0033] Among them; the pump liquid spraying mechanism includes a four-way pipe 601, a water inlet solenoid valve 602, a spraying solenoid valve 603, a water inlet pump 604 and a spraying pump 605, the four-way pipe 601 is fixedly connected between the two lower multi-way pipes 505, the water inlet solenoid valve 602 and the spraying solenoid valve 603 are respectively fixedly installed at the bottom and top of the four-way pipe 601, the water inlet pump 604 is fixedly installed at one end of the water inlet solenoid valve 602, and the spraying pump 605 is fixedly installed at one end of the spraying solenoid valve 603.

[0034] The pump liquid spraying mechanism also includes a spraying tee pipe 606, a support plate 607, an upper multi-way pipe 608, an inner pipe 609 and an atomizing nozzle 610. The spraying tee pipe 606 is fixedly installed at the output end of the spraying pump 605. The support plates 607 are respectively fixedly connected to the inner walls of both sides of the mixing tower 108. The upper multi-way pipe 608 is respectively fixedly connected to the inside of the two support plates 607. The inner pipe 609 is fixedly connected between the two upper multi-way pipes 608, and the number of the inner pipe 609 is multiple. The atomizing nozzle 610 0 is fixedly installed on the surface of the inner pipe 609, through the arranged four-way pipe 601, water inlet solenoid valve 602, spraying solenoid valve 603, water inlet pump 604, spraying pump 605, spraying three-way pipe 606, support plate 607, upper multi-way pipe 608, inner pipe 609 and atomizing nozzle 610, so that the slurry can be pumped through the spraying pump 605, sprayed through the atomizing nozzle 610, to ensure that the slurry is fully in contact with sulfur dioxide, and fed or flushed through the water inlet pump 604 to ensure that the interception net 504 is unobstructed.

[0035] Working principle: During installation, the input end of the smoke pump 205 is connected to the flue, the external top cover 109 is connected to the external dust collector, the output end of the slurry discharge solenoid valve 104 is connected to the slurry discharge pipeline, and the input end of the water inlet pump 604 is connected to the water pipe and the slurry feed pipeline through the distribution valve; When in use, the water inlet pump 604 is connected to the slurry feed pipeline through the distribution valve, the spraying solenoid valve 603 and the slurry discharge solenoid valve 104 are closed, the water inlet solenoid valve 602 is opened, and the water inlet pump 604 is started to pump the slurry into the slurry pool 101 through the four-way pipe 601 and the lower multi-way pipe 505. When the slurry reaches a certain depth, the water inlet solenoid valve 602 and the water inlet pump 604 are closed, the spraying solenoid valve 603 and the spraying pump 605 are opened, and the spraying pump 605 pumps the slurry so that the slurry enters the four-way pipe 601 and the lower multi-way pipe 505 from the lower multi-way pipe 505. The slurry passes through the spraying solenoid valve 603 and the spraying pump 605, enters the spraying three-way pipe 606, and then passes through the upper multi-way pipe 608 to enter the inner pipe 609 to be sprayed from the atomizing nozzle 610, and then the spoiler motor 403 is started, and the spoiler motor 403 drives the driving wheel 405, and the driving wheel 405 drives the driven wheel 406 through the belt 407 to rotate the spoiler shaft 404, thereby driving the centrifugal impeller 408 to rotate. When the centrifugal impeller 408 rotates, a centrifugal effect is generated, so that the slurry is sucked in from the bottom and then The smoke is then dispersed from the side, thereby actively forming a turbulent flow to avoid slurry deposition, and then the smoke pump 205 is started, and the smoke pump 205 pumps the smoke, so that the smoke passes through the through port 306 to push open the rubber sheet 303 and the spring sheet 304 to enter the supporting mesh cover 207, and then enters the interior of the filter material 209 and keeps shuttling, so that most of the solid particles in the smoke are stuck in the gaps between the filter materials 209, and then pass through the filter cylinder 208 and the mesh cylinder 206 and are discharged from the cylinder discharge port 203 into the upper smoke inlet elbow 107, and then pass through the smoke inlet one-way The valve 106 enters the lower smoke inlet elbow 105, and then passes through the slurry discharge smoke inlet tee pipe 103 to enter the slurry pool 101. The smoke entering the slurry pool 101 floats up and continuously disturbs the slurry, and part of the sulfur dioxide in the smoke is absorbed. Then the smoke continues to rise. The rising smoke first passes through the flow equalizer 110 to be evenly dispersed, and then is fully contacted by the sprayed slurry until the sulfur dioxide in the smoke is fully absorbed. Then the smoke passes through the demister 111, so that the moisture is intercepted, and the gas is discharged from the external top cover 109; During flushing, the water inlet pump 604 is connected to the water pipe through the distribution valve, the grouting solenoid valve 603 and the slurry discharge solenoid valve 104 are closed, the water inlet solenoid valve 602 is opened, and the water inlet pump 604 is started to pump tap water into the slurry pool 101 through the four-way pipe 601 and the lower multi-way pipe 505, so that the tap water reversely flushes the bubble baffle 502 and the interception net 504 until the water level reaches a certain depth, the water inlet solenoid valve 602 and the water inlet pump 604 are closed, and the grouting solenoid valve 603 and the slurry discharge solenoid valve 104 are opened. Valve 603 and spray pump 605, spray pump 605 pumps tap water, so that the slurry enters the four-way pipe 601 from the lower multi-way pipe 505, and then passes through the spray solenoid valve 603 and the spray pump 605 to enter the spraying three-way pipe 606, and then passes through the upper multi-way pipe 608 to enter the internal pipe 609 and is sprayed out from the atomizing nozzle 610, thereby opposing the internal flushing of the device. After the flushing is completed, the slurry discharge solenoid valve 104 is opened to discharge the sewage. If necessary, the operation can be repeated to ensure the cleaning effect.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for purifying flue gas generated by secondary lead smelting, characterized in that: include: A desulfurization mixing mechanism, wherein a flue gas dust filtering mechanism is arranged on one side of the desulfurization mixing mechanism, a one-way flow guide mechanism is arranged inside the flue gas dust filtering mechanism, a turbulence anti-deposition mechanism and a bubble blocking mechanism are arranged inside the desulfurization mixing mechanism, and the bubble blocking mechanisms are respectively arranged on both sides of the turbulence anti-deposition mechanism, and a pump liquid spraying mechanism is arranged between the two bubble blocking mechanisms.

2. A device for purifying flue gas generated by secondary lead smelting according to claim 1, characterized in that: The desulfurization mixing mechanism comprises a slurry pool (101), a flow guide curved surface (102), a slurry discharge and smoke inlet three-way pipe (103), a slurry discharge solenoid valve (104), a lower smoke inlet curved pipe (105), a smoke inlet one-way valve (106) and an upper smoke inlet curved pipe (107); the flow guide curved surface (102) is arranged on the inner bottom wall of the slurry pool (101); the slurry discharge and smoke inlet three-way pipe (103) is fixedly mounted at the bottom end of the slurry pool (101); the slurry discharge solenoid valve (104) and the lower smoke inlet curved pipe (105) are respectively fixedly mounted at both ends of the slurry discharge and smoke inlet three-way pipe (103); the smoke inlet one-way valve (106) is fixedly mounted at the input end of the lower smoke inlet curved pipe (105); and the upper smoke inlet curved pipe (107) is fixedly mounted at the input end of the smoke inlet one-way valve (106).

3. A device for purifying flue gas generated by secondary lead smelting according to claim 2, characterized in that: The desulfurization mixing mechanism also includes a mixing tower (108), an external top cover (109), a flow equalizing plate (110) and a demister (111), wherein the mixing tower (108) is fixedly connected to the top of the slurry pool (101), the external top cover (109) is fixedly connected to the top of the mixing tower (108), the flow equalizing plate (110) and the demister (111) are both fixedly installed inside the mixing tower (108), the demister (111) is located at the top of the mixing tower (108), and the flow equalizing plate (110) is located at the bottom of the mixing tower (108).

4. The device for purifying flue gas generated by secondary lead smelting according to claim 2, characterized in that: The smoke dust filtering mechanism comprises a connecting frame (201), a dust filter cartridge (202), a cartridge outlet (203), a flange cover (204), a smoke pump (205), a mesh cartridge (206), a supporting mesh cover (207), a filter cartridge (208), and a smoke filter material (209); the dust filter cartridge (202) is fixedly mounted on the surface of a slurry pool (101) via the connecting frame (201); the cartridge outlet (203) is integrally arranged on the surface of the dust filter cartridge (202); and the flange cover (204) is fixedly mounted on the surface of a slurry pool (101) via the connecting frame (201). The bolts are fixedly mounted on the top end of the dust filter cylinder (202), the smoke extraction pump (205) is fixedly mounted on the bottom end of the dust filter cylinder (202), the mesh cylinder (206) is slidably connected to the inner wall of the dust filter cylinder (202), the supporting mesh cover (207) is fixedly connected to the inner bottom wall of the mesh cylinder (206), the filter cylinder (208) is slidably connected to the inner wall of the mesh cylinder (206), and the smoke filter material (209) is filled between the supporting mesh cover (207), the filter cylinder (208) and the flange cover (204).

5. A device for purifying flue gas generated by secondary lead smelting according to claim 4, characterized in that: The one-way flow guide mechanism comprises a flow block (301), a fixing ring (302), a rubber sheet (303), a spring sheet (304), a limiting pin (305) and a through-port (306); the flow block (301) is fixedly connected to the inner wall of the supporting mesh cover (207); the fixing ring (302) is fixedly connected to the upper surface of the flow block (301); the spring sheet (304) is integrally arranged on the inner wall of the fixing ring (302); the rubber sheet (303) is fixedly attached to the lower surfaces of the fixing ring (302) and the spring sheet (304); the limiting pin (305) is fixedly connected to the middle of the flow block (301); and a movable gap is provided between the limiting pin (305) and the spring sheet (304); and the through-port (306) is opened through both sides of the flow block (301); and the through-port (306) is located below the spring sheet (304).

6. The device for purifying flue gas generated by secondary lead smelting according to claim 2, characterized in that: The spoiler and anti-deposition mechanism comprises a sealing cover (401), a sealing plate (402), a spoiler motor (403), a spoiler shaft (404), a driving wheel (405), a driven wheel (406), a belt (407) and a centrifugal impeller (408); the sealing cover (401) is fixedly connected to the inside of the slurry pool (101); the sealing plate (402) is fixedly connected to the inner wall of the sealing cover (401); the spoiler motor (403) is fixedly mounted on the surface of the sealing cover (401); the spoiler shaft (404) is rotatably connected to the bottom of the sealing cover (401); the driving wheel (405) is fixedly mounted on the output end of the spoiler motor (403); the driven wheel (406) is fixedly mounted on the surface of the spoiler shaft (404); the belt (407) is mounted between the driving wheel (405) and the driven wheel (406); and the centrifugal impeller (408) is fixedly mounted on the bottom end of the spoiler shaft (404).

7. A device for purifying flue gas generated by secondary lead smelting according to claim 6, characterized in that: The centrifugal impeller (408) comprises an upper cover, centrifugal blades, a lower cover ring and a reinforcement ring, and the number of the centrifugal blades is multiple, and the multiple centrifugal blades are fixedly connected between the upper cover and the lower cover ring, and the reinforcement ring is fixedly inserted between the multiple centrifugal blades.

8. The device for purifying flue gas generated by secondary lead smelting according to claim 3, characterized in that: The bubble blocking mechanism comprises a support block (501), a bubble baffle (502), a packaging cover frame (503), an interception net (504) and a lower multi-way pipe (505); the number of the support blocks (501) is two, and the two support blocks (501) are respectively fixedly connected to the inner walls of both sides of the slurry pool (101); the number of the bubble baffle (502) is two, and the two bubble baffles (502) are both fixedly connected to the inside of the slurry pool (101); and the two bubble baffles (502) are fixedly connected to the inside of the slurry pool (101). The baffles (502) are respectively located on one side of the two support blocks (501), and a flow gap is provided between the two bubble baffles (502) and the inner side wall of the slurry pool (101), the packaging cover frame (503) is respectively fixedly connected to the surface of the two support blocks (501), the interception net (504) is fixedly connected between the packaging cover frame (503) and the support block (501), and the lower multi-way pipe (505) is respectively fixedly connected to one side of the two support blocks (501).

9. A device for purifying flue gas generated by secondary lead smelting according to claim 8, characterized in that: The pump liquid spraying mechanism comprises a four-way pipe (601), a water inlet solenoid valve (602), a spraying solenoid valve (603), a water inlet pump (604) and a spraying pump (605); the four-way pipe (601) is fixedly connected between two lower multi-way pipes (505); the water inlet solenoid valve (602) and the spraying solenoid valve (603) are respectively fixedly mounted at the bottom and top of the four-way pipe (601); the water inlet pump (604) is fixedly mounted at one end of the water inlet solenoid valve (602); and the spraying pump (605) is fixedly mounted at one end of the spraying solenoid valve (603).

10. A device for purifying flue gas generated by secondary lead smelting according to claim 9, characterized in that: The pump liquid spraying mechanism also includes a spraying tee (606), a support plate (607), an upper multi-way pipe (608), an inner pipe (609) and an atomizing nozzle (610). The spraying tee (606) is fixedly installed at the output end of the spray pump (605). The support plates (607) are respectively fixedly connected to the inner walls of both sides of the mixing tower (108). The upper multi-way pipe (608) is respectively fixedly connected to the inside of the two support plates (607). The inner pipe (609) is fixedly connected between the two upper multi-way pipes (608), and the number of the inner pipes (609) is multiple. The atomizing nozzle (610) is fixedly installed on the surface of the inner pipe (609).

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