CN221015207U - Low-energy-consumption wet-type variable flow dust removal and deep purification integrated tower - Google Patents
Low-energy-consumption wet-type variable flow dust removal and deep purification integrated tower Download PDFInfo
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- CN221015207U CN221015207U CN202322976728.5U CN202322976728U CN221015207U CN 221015207 U CN221015207 U CN 221015207U CN 202322976728 U CN202322976728 U CN 202322976728U CN 221015207 U CN221015207 U CN 221015207U
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- 239000000428 dust Substances 0.000 title claims abstract description 69
- 238000000746 purification Methods 0.000 title claims abstract description 19
- 238000005265 energy consumption Methods 0.000 title claims abstract description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 72
- 239000003546 flue gas Substances 0.000 claims abstract description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 67
- 238000005406 washing Methods 0.000 claims abstract description 47
- 239000003595 mist Substances 0.000 claims abstract description 36
- 239000000725 suspension Substances 0.000 claims abstract description 13
- 230000002776 aggregation Effects 0.000 claims abstract description 12
- 230000018044 dehydration Effects 0.000 claims abstract description 12
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 12
- 239000007921 spray Substances 0.000 claims abstract description 12
- 238000005054 agglomeration Methods 0.000 claims abstract description 11
- 239000010865 sewage Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 41
- 230000005587 bubbling Effects 0.000 claims description 12
- 239000006260 foam Substances 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 7
- 238000007667 floating Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000004220 aggregation Methods 0.000 claims 1
- 230000006872 improvement Effects 0.000 abstract description 14
- 238000005516 engineering process Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 13
- 239000000779 smoke Substances 0.000 description 11
- 238000000926 separation method Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 6
- 239000012071 phase Substances 0.000 description 4
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- 239000010959 steel Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
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- 230000000630 rising effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
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- 238000006477 desulfuration reaction Methods 0.000 description 1
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- 238000011982 device technology Methods 0.000 description 1
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Abstract
The utility model relates to a low-energy-consumption wet-type variable flow dust removal and deep purification integrated tower, which comprises a tower body, wherein a flue gas inlet is formed in the side wall of the lower part of the tower body, a flue gas pretreatment section is arranged in the flue gas inlet, a clean flue gas outlet is formed in the upper end of the tower body, a sewage collecting bucket is arranged at the lower end of the tower body, and a primary wet-type reverse spray washing dust removal section and a secondary turbulent bed multichannel pneumatic rotational flow dehydration section are sequentially arranged in the tower body from bottom to top; a venturi jet interception layer, a countercurrent suspension washing layer and a venturi rectifying layer are sequentially arranged in the first-stage wet type reverse spray washing dust removal section from bottom to top; the two-stage turbulent bed multi-channel pneumatic cyclone dehydration section is internally provided with a turbulent bed scrubber, a turbulent bed water mist generator, an acoustic agglomeration device, a multi-channel pneumatic cyclone dehydrator and a diversion and air equalization device from bottom to top in sequence. Compared with the common wet washing dust collector technology, the technology of the utility model has the advantages of 50% improvement on the total dust collection efficiency and 40% reduction on the water consumption.
Description
Technical Field
The utility model relates to a dust removal and ultralow emission device for preventing and treating atmospheric pollution, in particular to a low-energy-consumption wet-type variable flow dust removal and deep purification integrated tower, and belongs to the technical field of flue gas dust removal, desulfurization and purification devices.
Background
The wet flue gas of dust-containing vapor flow is the most common pollution source flue gas in the production process of the ferrous metallurgy industry, and particularly has the characteristics of high temperature, high humidity, high Ca+2, high viscosity and the like, the treatment of the dust-containing vapor flow flue gas still has the difficulty of meeting the ultralow emission requirement, an improved wet dust removal system is generally adopted, the existing wet dust removal system has low fine dust removal and dehydration defogging efficiency, the difficulty of stably meeting the ultralow emission standard requirement on the emission concentration is quite high, the classification efficiency of the inhalable dust of 5-10 mu m is low, the occupied area of equipment is large, the washing strength is weak, the water-gas contact heat exchange efficiency is low, the absolute humidity of discharged smoke is high, the colored wet flue gas is commonly called as white flue gas concentration and the water consumption is high, and the like.
Development of high-efficiency low-energy wet dust removal and deep purification devices and systems with stable performance has become an urgent task for energy conservation, emission reduction, carbon reduction and green transformation in the iron and steel metallurgical industry.
Disclosure of utility model
The utility model aims to provide a low-energy-consumption wet-type variable flow dust removal and deep purification integrated tower, which aims to solve the defects in the prior art.
The technical scheme adopted by the utility model is as follows:
The low-energy wet type variable flow dust removal and deep purification integrated tower comprises a tower body, wherein a flue gas inlet is formed in the side wall of the lower part of the tower body, a flue gas pretreatment section is arranged in the flue gas inlet, a clean flue gas outlet is formed in the upper end of the tower body, a sewage collecting bucket is arranged at the lower end of the tower body, and a primary wet type reverse spray washing dust removal section and a secondary turbulent bed multichannel pneumatic cyclone dehydration section are sequentially arranged in the tower body from bottom to top;
a venturi jet interception layer, a countercurrent suspension washing layer and a venturi rectifying layer are sequentially arranged in the first-stage wet type reverse spray washing dust removal section from bottom to top;
The two-stage turbulent bed multichannel pneumatic cyclone dehydration section is internally provided with a turbulent bed scrubber, a turbulent bed water mist generator, an acoustic agglomeration device, a multichannel pneumatic cyclone dehydrator and a diversion and air equalization device from bottom to top in sequence.
As a further improvement of the technical scheme, the Venturi spraying interception layer comprises a liquid distributor, venturi bar grating layers and a water mist generator, wherein the liquid distributor consists of uniform cross section Venturi circular bar grating layers, the Venturi bar grating layers consist of one or more layers of uniform cross section Venturi circular bar grating layers, the uniform cross section Venturi circular bar grating layers consist of a plurality of hollow round tubes which are arranged on the same plane at equal intervals, the bar grating cross section arrangement directions of the adjacent uniform cross section Venturi circular bar grating layers are the same and are alternately arranged, the water mist generator is arranged on the pipe wall of the hollow round tubes, the water mist generator consists of slit-shaped nozzles or flat nozzles, the water mist generator is symmetrically distributed between every two hollow round tubes, the relative horizontal angle is within a range of plus or minus 45 degrees, a flow pressure regulating valve is arranged on a liquid supply pipe of the liquid distributor, a bubbling foam layer is formed on the surface of the Venturi bar grating layers, and the height regulating range of the bubbling foam layer is between 100mm and 300 mm.
As a further improvement of the technical scheme, the venturi rectifying layer is composed of one or more layers of uniform-section venturi round bar grating layers, the uniform-section venturi round bar grating layers are composed of a plurality of hollow round tubes which are arranged on the same plane at equal intervals, and the bar grating section arrangement directions of the adjacent uniform-section venturi round bar grating layers are the same.
As a further improvement of the technical scheme, the turbulent bed scrubber is a three-phase fluidized bed contactor which takes gas as a continuous phase and takes gas-liquid countercurrent or cross flow as an operation mode, and comprises a turbulent fluidized bed and a filler, wherein the filler is hollow plastic or stainless steel floating balls.
As a further improvement of the technical scheme, the sound wave agglomeration device consists of a fixed frequency generator N, a frequency-adjustable generator E and a sound wave transmission cylinder M, wherein the output ends of the fixed frequency generator N and the frequency-adjustable generator E are connected with the input end of the sound wave transmission cylinder M, and the output end of the sound wave transmission cylinder M is connected with the tower body.
As a further improvement of the technical scheme, the multi-channel pneumatic cyclone dehydrator consists of a plurality of wet cyclone cylinders which are uniformly distributed in parallel along the flow direction of the flue gas, wherein the wet cyclone cylinders are round cylinders, and one or more layers of outward cyclone plates are arranged in the wet cyclone cylinders.
As a further improvement of the technical scheme, the bottom of the sewage collecting hopper is provided with a sewage discharge port.
The utility model has the advantages that:
1. The flue gas to be treated enters a first-stage wet type reverse spray washing dust removing section after being washed, contacted and cooled by water mist of a flue gas pretreatment section, the flue gas is cooled, and primary gas-liquid separation, dust removal and dehydration are realized under the action of gravity.
2. The venturi jet interception layer is arranged, and the flow cross section is reduced between the venturi bar grating layer pipe and the pipe, so that when the washing liquid of the countercurrent suspension washing layer falls down, the venturi jet effect is generated between the venturi bar grating layer pipe and the hot flue gas which flows up reversely under the action of negative pressure, the flow energy of the flue gas is increased, the relative speed of the flue gas is improved, dust particles are wetted by water, inertial collision and agglomeration are generated between the dust particles and liquid drops, and the flue gas is further washed and purified;
The water mist generator is arranged on the pipe wall of the venturi rod grating layer, high-pressure washing liquid is sprayed between the venturi rod grating layer pipe and the pipe through strip slit-shaped nozzles or flat nozzles which are symmetrically distributed at a certain angle relative to a horizontal angle, the high-speed spraying collides with the flue gas, and is in shearing interception type high-speed contact with the flue gas, so that the interception washing effect on the particulate matters in the flue gas of the upward steam flow is achieved, and meanwhile, the liquid carrying amount of the washing liquid with adjustable layer can be increased;
The uniform and dense high-flow washing liquid discharged from the upper countercurrent suspension washing layer is accumulated on the Venturi rod grid layer, so that hot flue gas rising in countercurrent under the action of negative pressure excites a large number of bubbles, water vapor is sprayed along the pipe wall to rise in a polishing way, a 'liquid-coated gas' is generated to form a turned bubbling foam layer, and the height of the bubbling foam layer is regulated to be 100-300 mm through a regulating valve on a liquid supply pipe;
The dust is disturbed by foam while being subjected to inertial diffusion, so that a gas-liquid contact surface of smoke jet flow and bubble is formed, and a smoke water bath effect, a Venturi jet effect and a bubbling coagulation effect are generated. The water mist particles suspended in the flue gas and taking fine particulate matters as cores generate strong turbulence, the flue gas is sufficiently washed, the effect that the condensed dust particles are condensation nuclei is quickened, the dust particles are condensed and are easy to collect, and compared with a common wet washing dust remover, the dust removing and grading efficiency is improved by 30%.
3. The flue gas continues to go upward to the countercurrent suspension washing layer, the countercurrent suspension washing layer is uniformly distributed on the section of the tower body by a plurality of groups of water mist generators, the water mist generators generate uniform and dense large-flow water mist, the dust-containing steam flow flue gas is efficiently suspended, washed and purified, and the dense water mist carried by the flue gas after washing and purification goes upward to a certain space for further condensation and sedimentation.
4. When the air flow mixed with water drops enters the cyclone dewatering plate, fine water drops impact and accumulate on the cyclone plate to form large-particle water drops, the water drops are thrown to the inner wall of the assembly along the blades in the centrifugal direction under the driving of the air flow, and meanwhile, part of water drops entrained in the air are separated due to the rotation of the air flow. The three-stage water-vapor separation is realized, 99% of mechanical water in the flue gas can be removed in a large range, and the flue gas is subjected to flow equalization on a larger section surface. Compared with the common wet washing dust collector technology, the technology of the utility model has the advantages of 50 percent of total dust collection efficiency improvement and ultralow emission.
5. The wet-type variable flow dust removal and ultra-low emission integrated tower is vertically arranged from top to bottom in a multi-layer washing and flushing mode, the liquid carrying amount on the unit section of the tower body is large, the countercurrent contact time is long, the washing strength is improved by 25%, the vapor cooling condensation process time is long, the contact heat transfer efficiency is high, the absolute humidity of discharged smoke is effectively reduced, the white smoke concentration of wet smoke plume is greatly reduced, and the water consumption is reduced by 40%.
6. The floor area of the wet-type variable-flow dust removal and ultra-low emission integrated tower is small, and is reduced by 30 percent compared with the floor area of the common wet-type dust removal tower washing and dehydrating tower separation technology.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a cross-sectional view of a venturi jet intercepting rectifying bar grating layer in accordance with the present utility model.
Fig. 3 is a schematic view of the structure of the water mist generator mounted on the wall of the hollow circular tube.
In the figure, the tower body is 1, the flue gas inlet is 2, the flue gas pretreatment section is 3, the clean flue gas outlet is 4, the dirt collecting hopper is 5, the countercurrent suspension washing layer is 6, the venturi rectifying layer is 7, the turbulent bed water mist generator is 8, the sonic agglomeration device is 9, the diversion and air equalization device is 10, the liquid distributor is 11, the venturi rod grid layer is 12, the water mist generator is 13, the flow pressure regulating valve is 14, the packing is 15, the lower supporting device is 16, the upper limiting device is 17, the wet rotary drum is 18, the outward cyclone plate is 19, and the sewage discharge port is 20.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The low-energy wet type variable flow dust removal and deep purification integrated tower comprises a tower body 1, wherein a flue gas inlet 2 is formed in the side wall of the lower part of the tower body 1, a flue gas pretreatment section 3 is arranged in the flue gas inlet 2, a clean flue gas outlet 4 is formed in the upper end of the tower body 1, a sewage collecting bucket 5 is arranged at the lower end of the tower body 1, and a primary wet type reverse spray washing dust removal section and a secondary turbulent bed multichannel pneumatic cyclone dehydration section are sequentially arranged in the tower body 1 from bottom to top;
A venturi jet interception layer, a countercurrent suspension washing layer 6 and a venturi rectifying layer 7 are sequentially arranged in the first-stage wet type reverse spray washing dust removal section from bottom to top;
The two-stage turbulent bed multichannel pneumatic cyclone dehydration section is internally provided with a turbulent bed scrubber, a turbulent bed water mist generator 8, an acoustic agglomeration device 9, a multichannel pneumatic cyclone dehydrator and a diversion and air equalization device 10 from bottom to top in sequence.
As a further improvement of the technical scheme, the Venturi jet interception layer comprises a liquid distributor 11, venturi rod grating layers 12 and a water mist generator 13, wherein the liquid distributor 11 is composed of uniform-section Venturi round rod gratings, the Venturi rod grating layers are composed of one or more layers of uniform-section Venturi round rod grating layers, the uniform-section Venturi round rod grating layers are composed of a plurality of hollow round tubes in an equidistant arrangement mode on the same plane, the rod grating section arrangement directions of the adjacent uniform-section Venturi round rod grating layers are the same and are alternately arranged, the water mist generator 13 is arranged on the pipe wall of the hollow round tubes, the water mist generator 13 is composed of slit-shaped nozzles or flat nozzles, the water mist generator 13 is symmetrically distributed between every two hollow round tubes, the relative horizontal angle is within a range of plus or minus 45 degrees, flow pressure regulating valves 14 are arranged on the liquid supply pipe of the liquid distributor 11, the surface of the Venturi rod grating layers 12 forms bubbling foam layers, and the height regulating range of the bubbling foam layers is between 100mm and 300 mm.
The venturi jet interception layer equalizes the uplink flue gas, and utilizes the change of the flow section of the flue gas in the tower body and the venturi effect to further remove entrained tiny liquid drops and intercept fine particles to the uplink flue gas, so as to complete the secondary water-gas separation and purification, and the flue gas continues to uplink in a way similar to 'plug flow'.
As a further improvement of the technical scheme, the Venturi rectifying layer 7 is composed of one or more layers of uniform-section Venturi round bar grating layers, the uniform-section Venturi round bar grating layers are composed of a plurality of hollow round tubes which are arranged on the same plane at equal intervals, and the bar grating section arrangement directions of the adjacent uniform-section Venturi round bar grating layers are the same.
As a further improvement of the technical scheme, the turbulent bed scrubber is a three-phase fluidized bed contactor which takes gas as a continuous phase and takes gas-liquid countercurrent or cross flow as an operation mode, the turbulent bed scrubber comprises a turbulent bed and a filler 15, the filler 15 is hollow plastic or stainless steel floating balls, the turbulent bed comprises a lower supporting device 16 and an upper limiting device 17, the lower supporting device 16 is a lower supporting screen plate or a lower supporting screen plate steel wire mesh grid, the upper limiting device 17 is an upper limiting screen plate or an upper limiting steel wire mesh grid, the filler is filled in a space surrounded by the lower supporting device and the upper limiting device, the aperture ratio of the lower supporting screen plate is 0.42-0.7, and the aperture ratio of the upper limiting device is 0.7-0.9. When the flue gas passes through the turbulent fluidized bed, the floating balls are in turbulent rotation in the tower body and collide with each other, the water mist generator of the turbulent fluidized bed sprays from top to bottom to wet the surfaces of the small balls, and the liquid film on the surfaces of the small balls is continuously updated due to the contact of gas, liquid and solid phases, so that the contact and mass transfer between the gas and the liquid are enhanced, and the hierarchical dust removal efficiency of the system is improved.
As a further improvement of the technical scheme, the sound wave agglomeration device 9 consists of a fixed frequency generator N, a tunable frequency generator E and a sound wave transmission cylinder M, wherein the output ends of the fixed frequency generator N and the tunable frequency generator E are connected with the input end of the sound wave transmission cylinder M, and the output end of the sound wave transmission cylinder M is connected with the tower body.
The sound wave agglomeration device is arranged above the turbulent bed water mist generator 8, and adopts the principle of sound wave agglomeration to enable water mist particles suspended in the flue gas and taking fine particulate matters as cores to shake vigorously, and the dust particles are agglomerated and coagulated due to collision to break a dust particle air film, so that the trapping efficiency of the wet dust removal system on MP2.5 fine particulate matters and the like is improved.
As a further improvement of the above technical scheme, the multi-channel pneumatic cyclone dehydrator is composed of a plurality of wet cyclone cylinders 18 which are uniformly distributed in parallel along the flow direction of the flue gas, the wet cyclone cylinders 18 are circular cylinders, and one or more layers of outward cyclone plates 19 are arranged in the wet cyclone cylinders 18.
When the air flow mixed with water drops enters the cyclone dewatering plate, fine water drops impact and accumulate on the cyclone plate to form large-particle water drops, the water drops are thrown to the inner wall of the assembly along the blades in the centrifugal direction under the driving of the air flow, and meanwhile, part of water drops entrained in the air are separated due to the rotation of the air flow. The three-stage water-vapor separation is realized, 99% of mechanical water in the flue gas can be removed in a large range, and the flue gas is subjected to flow equalization on a larger section surface.
First-stage wet type reverse spray scrubbing dust removal section outlet emission concentration: and the concentration of the low-temperature low-concentration flow equalizing inlet condition is less than or equal to 10mg/Nm & lt/EN & gt for the fine dust removal of the multi-channel pneumatic cyclone dehydration section of the secondary turbulent bed.
As a further improvement of the above technical solution, a sewage discharge port 20 is provided at the bottom of the sewage collecting bucket 5.
The working principle is as follows:
1. The flue gas to be treated enters a first-stage wet type reverse spray washing dust removing section after being washed, contacted and cooled by water mist of a flue gas pretreatment section, the flue gas is cooled, and primary gas-liquid separation, dust removal and dehydration are realized under the action of gravity.
2. The venturi jet interception layer is arranged, and the flow cross section is reduced between the venturi bar grating layer pipe and the pipe, so that when the washing liquid of the countercurrent suspension washing layer falls down, the venturi jet effect is generated between the venturi bar grating layer pipe and the hot flue gas which flows up reversely under the action of negative pressure, the flow energy of the flue gas is increased, the relative speed of the flue gas is improved, dust particles are wetted by water, inertial collision and agglomeration are generated between the dust particles and liquid drops, and the flue gas is further washed and purified;
The water mist generator is arranged on the pipe wall of the venturi rod grating layer, high-pressure washing liquid is sprayed between the venturi rod grating layer pipe and the pipe through strip slit-shaped nozzles or flat nozzles which are symmetrically distributed at a certain angle relative to a horizontal angle, the high-speed spraying collides with the flue gas, and is in shearing interception type high-speed contact with the flue gas, so that the interception washing effect on the particulate matters in the flue gas of the upward steam flow is achieved, and meanwhile, the liquid carrying amount of the washing liquid with adjustable layer can be increased;
The uniform and dense high-flow washing liquid discharged from the upper countercurrent suspension washing layer is accumulated on the Venturi rod grid layer, so that hot flue gas rising in countercurrent under the action of negative pressure excites a large number of bubbles, water vapor is sprayed along the pipe wall to rise in a polishing way, a 'liquid-coated gas' is generated to form a turned bubbling foam layer, and the height of the bubbling foam layer is regulated to be 100-300 mm through a regulating valve on a liquid supply pipe;
The dust is disturbed by foam while being subjected to inertial diffusion, so that a gas-liquid contact surface of smoke jet flow and bubble is formed, and a smoke water bath effect, a Venturi jet effect and a bubbling coagulation effect are generated. The water mist particles suspended in the flue gas and taking fine particulate matters as cores generate strong turbulence, the flue gas is sufficiently washed, the effect that the condensed dust particles are condensation nuclei is quickened, the dust particles are condensed and are easy to collect, and compared with a common wet washing dust remover, the dust removing and grading efficiency is improved by 30%.
3. The flue gas continues to go upward to the countercurrent suspension washing layer, the countercurrent suspension washing layer is uniformly distributed on the section of the tower body by a plurality of groups of water mist generators, the water mist generators generate uniform and dense large-flow water mist, the dust-containing steam flow flue gas is efficiently suspended, washed and purified, and the dense water mist carried by the flue gas after washing and purification goes upward to a certain space for further condensation and sedimentation.
4. When the air flow mixed with water drops enters the cyclone dewatering plate, fine water drops impact and accumulate on the cyclone plate to form large-particle water drops, the water drops are thrown to the inner wall of the assembly along the blades in the centrifugal direction under the driving of the air flow, and meanwhile, part of water drops entrained in the air are separated due to the rotation of the air flow. The three-stage water-vapor separation is realized, 99% of mechanical water in the flue gas can be removed in a large range, and the flue gas is equalized on a larger section surface, so that the total dust removal efficiency is improved by 50% compared with the common wet washing dust removal device technology, and the ultra-low emission is achieved.
5. The wet-type variable flow dust removal and ultra-low emission integrated tower is vertically arranged from top to bottom in a multi-layer washing and flushing mode, the liquid carrying amount on the unit section of the tower body is large, the countercurrent contact time is long, the washing strength is improved by 25%, the vapor cooling condensation process time is long, the contact heat transfer efficiency is high, the absolute humidity of discharged smoke is effectively reduced, the white smoke concentration of wet smoke plume is greatly reduced, and the water consumption is reduced by 40%.
6. The floor area of the wet-type variable-flow dust removal and ultra-low emission integrated tower is small, and is reduced by 30 percent compared with the floor area of the common wet-type dust removal tower washing and dehydrating tower separation technology.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The low-energy wet type variable flow dust removal and deep purification integrated tower is characterized by comprising a tower body, wherein a flue gas inlet is formed in the side wall of the lower part of the tower body, a flue gas pretreatment section is arranged in the flue gas inlet, a clean flue gas outlet is formed in the upper end of the tower body, a sewage collecting bucket is arranged at the lower end of the tower body, and a first-stage wet type reverse spray washing dust removal section and a second-stage turbulent bed multichannel pneumatic cyclone dehydration section are sequentially arranged in the tower body from bottom to top;
a venturi jet interception layer, a countercurrent suspension washing layer and a venturi rectifying layer are sequentially arranged in the first-stage wet type reverse spray washing dust removal section from bottom to top;
The two-stage turbulent bed multichannel pneumatic cyclone dehydration section is internally provided with a turbulent bed scrubber, a turbulent bed water mist generator, an acoustic agglomeration device, a multichannel pneumatic cyclone dehydrator and a diversion and air equalization device from bottom to top in sequence.
2. The low-energy-consumption wet type variable flow dust removal and deep purification integrated tower according to claim 1, wherein the venturi jet interception layer comprises a liquid distributor, a venturi bar grating layer and a water mist generator;
The liquid distributor consists of uniform cross section Venturi circular bar grids, the Venturi bar grid layer consists of one or more layers of uniform cross section Venturi circular bar grids, the uniform cross section Venturi circular bar grids consist of a plurality of hollow round tubes which are arranged on the same plane at equal intervals, the bar grid cross sections of adjacent uniform cross section Venturi circular bar grids are arranged in the same direction and are alternately arranged, the water mist generator is arranged on the pipe wall of the hollow round tubes, the water mist generator consists of strip slit-shaped nozzles or flat nozzles, the water mist generator is symmetrically distributed between every two hollow round tubes, and the relative horizontal angle is within a range of plus or minus 45 degrees;
The liquid supply pipe of the liquid distributor is provided with a flow pressure regulating valve, a bubbling foam layer is formed on the surface of the Venturi rod grating layer, and the height regulating range of the bubbling foam layer is between 100mm and 300 mm.
3. The low-energy-consumption wet-type variable flow dust removal and deep purification integrated tower is characterized in that the Venturi rectifying layer is composed of one or more layers of uniform-section Venturi round bar grating layers, the uniform-section Venturi round bar grating layers are composed of a plurality of hollow round tubes which are arranged equidistantly on the same plane, and the bar grating cross sections of adjacent uniform-section Venturi round bar grating layers are arranged in the same direction.
4. The low-energy-consumption wet-type variable flow dust removal and deep purification integrated tower according to claim 1, wherein the turbulent bed scrubber is a three-phase fluidized bed contactor which takes gas as a continuous phase and takes gas-liquid countercurrent or cross flow as an operation mode, the turbulent bed scrubber comprises a turbulent fluidized bed and a filler, and the filler is hollow plastic or stainless steel floating balls.
5. The low-energy-consumption wet-type variable flow dust removal and deep purification integrated tower is characterized in that the sound wave aggregation device consists of a fixed frequency generator N, a tunable frequency generator E and a sound wave transmission cylinder M, wherein the output ends of the fixed frequency generator N and the tunable frequency generator E are connected with the input end of the sound wave transmission cylinder M, and the output end of the sound wave transmission cylinder M is connected with the tower body.
6. The low-energy-consumption wet type variable flow dust removal and deep purification integrated tower according to claim 1, wherein the multi-channel pneumatic cyclone dehydrator is composed of a plurality of wet rotary cylinders which are uniformly distributed in parallel along the flow direction of flue gas, the wet rotary cylinders are circular cylinders, and one or more layers of outward cyclone plates are arranged in the wet rotary cylinders.
7. The low-energy-consumption wet-type variable flow dust removal and deep purification integrated tower according to claim 1, wherein a sewage discharge port is arranged at the bottom of the sewage collecting bucket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322976728.5U CN221015207U (en) | 2023-11-04 | 2023-11-04 | Low-energy-consumption wet-type variable flow dust removal and deep purification integrated tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322976728.5U CN221015207U (en) | 2023-11-04 | 2023-11-04 | Low-energy-consumption wet-type variable flow dust removal and deep purification integrated tower |
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