CN112023540B - Waste gas purification equipment in cement production - Google Patents
Waste gas purification equipment in cement production Download PDFInfo
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- CN112023540B CN112023540B CN202010905703.4A CN202010905703A CN112023540B CN 112023540 B CN112023540 B CN 112023540B CN 202010905703 A CN202010905703 A CN 202010905703A CN 112023540 B CN112023540 B CN 112023540B
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- desulfurization
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- 239000004568 cement Substances 0.000 title claims abstract description 34
- 239000002912 waste gas Substances 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000000746 purification Methods 0.000 title claims abstract description 17
- 239000000428 dust Substances 0.000 claims abstract description 90
- 239000007789 gas Substances 0.000 claims abstract description 67
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 51
- 230000023556 desulfurization Effects 0.000 claims abstract description 51
- 238000001035 drying Methods 0.000 claims abstract description 27
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- 238000003860 storage Methods 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 49
- 238000003756 stirring Methods 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 238000011049 filling Methods 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 16
- 239000002918 waste heat Substances 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 7
- 238000007791 dehumidification Methods 0.000 abstract description 5
- 125000004122 cyclic group Chemical group 0.000 abstract description 4
- 229910052815 sulfur oxide Inorganic materials 0.000 description 13
- 238000009826 distribution Methods 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- 238000001914 filtration Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000010924 continuous production Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
-
- 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
- B01D53/26—Drying gases or vapours
-
- 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
- B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses waste gas purification equipment in cement production, which comprises a dust removal mechanism and an exhaust fan, wherein the dust removal mechanism comprises a dust removal tank A and a dust removal tank B, the middle parts of the outer sides of the dust removal tank A and the dust removal tank B are respectively sleeved with a sleeve tank A and a sleeve tank B, a drying tank is arranged on the right of the dust removal tank B, a sleeve tank C is sleeved on the outer side of the drying tank, and a desulfurization and denitrification tower, a desulfurization and denitrification agent storage tank and a dehumidifier are arranged on the right of the drying tank; the waste gas is filtered and dedusted through a dedusting tank A and a dedusting tank B, fresh air in the sleeve tank A and the sleeve tank B and gas after purification and dehumidification are preheated by waste heat in the waste gas, the preheated air is sent into a cement kiln to increase fresh hot air for the cement kiln, heat exchange is carried out on materials in a drying tank by the waste heat of the gas, desulfurization and denitrification treatment is carried out on the gas through a desulfurization and denitrification tower, and the gas is dehumidified through a dehumidifier; the invention has the advantages of good dust removal effect, high heat utilization rate, thorough purification and cyclic utilization of purified gas.
Description
Technical Field
The invention belongs to the technical field of waste gas treatment, and particularly relates to waste gas purification equipment in cement production.
Background
A large amount of waste gas is generated in the cement production process, the waste gas contains a large amount of heat, dust, nitrogen oxides and sulfur oxides, the direct emission causes pollution to the atmosphere, the waste gas needs to be purified before emission, a filter screen of the conventional waste gas purification equipment is easy to block and is inconvenient to clean, the dust removal effect is reduced, the waste heat in the waste gas cannot be fully utilized, the heat loss is caused, the desulfurization and denitrification effects are poor, the purification is not thorough, and the purified gas is directly emitted to the environment and is not recycled, so that the production cost is increased; therefore, how to overcome the above technical problems and disadvantages is a problem to be solved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides the waste gas purification equipment in the cement production, which has the advantages of grading dust removal, easy cleaning of a filter screen, good dust removal effect, high heat utilization rate, good desulfurization and denitrification effects, thorough purification, heat exchange between the purified and dehumidified gas and the waste gas, cyclic utilization of the purified and dehumidified gas and the waste gas in the cement kiln, fresh gas increase in the kiln, resource utilization rate improvement, production cost reduction, energy conservation and environmental protection.
The purpose of the invention is realized as follows: a waste gas purification device in cement production comprises a dust removal mechanism and an exhaust fan, wherein the dust removal mechanism comprises a dust removal tank A and a dust removal tank B, the dust removal tank B is positioned on the right side of the dust removal tank A, the middle parts of the outer sides of the dust removal tank A and the dust removal tank B are respectively sleeved with a sleeve tank A and a sleeve tank B, a drying tank is arranged on the right side of the dust removal tank B, a sleeve tank C is sleeved on the outer side of the drying tank, a desulfurization and denitrification tower is arranged on the right side of the drying tank, a desulfurization and denitrification agent storage tank is arranged on the right side of the desulfurization and denitrification tower, a dehumidifier is arranged on the right side of the desulfurization and denitrification agent storage tank, the input end of the exhaust fan is connected with a cement kiln exhaust pipe, the output end of the exhaust fan is connected with an air inlet main pipe, the air inlet main is connected with an air inlet branch pipe A and an air inlet branch pipe B through a tee joint, the air inlet pipe A and the air inlet pipe B are respectively installed on the air branch pipe A and the air inlet pipe B, the other end of the air inlet branch pipe A is connected with the lower part of the left side of the dust removing tank A, the other end of the air inlet branch pipe B is connected with the lower part of the left side of the dust removing tank B, the dust removing tank A and the dust removing tank B are internally connected with a filter screen A, a filter screen B, a filter screen C and a filter screen D from bottom to top, the upper parts of the right sides of the dust removing tank A and the dust removing tank B are respectively connected with an exhaust branch pipe A and an exhaust branch pipe B, the exhaust branch pipe A and the exhaust branch pipe B are respectively provided with an exhaust valve A and an exhaust valve B, the exhaust branch pipe A and the exhaust branch pipe B are connected with an exhaust main pipe through a three-way joint, the other end of the exhaust main pipe is connected with the lower part of the left side of the sleeve tank C, the upper part of the right side of the sleeve tank C is connected with an air outlet pipe, the other end of the air outlet pipe is connected with the lower part of the left side of the desulfurization and denitrification tower, the lower part of the desulfurization and denitrification agent storage tank is connected with a liquid dividing pipe through a liquid pump, the utility model discloses a desulfurization and denitration tower, including desulfurization and denitration tower, gas distribution pipe, gas supply main pipe, air supply main pipe, sleeve tank A, sleeve tank B, upper portion in the desulfurization and denitration tower is inserted to the gas distribution pipe other end, the shower nozzle is installed to the gas distribution pipe lower extreme, desulfurization and denitration tower inside wall fixedly connected with drainage plate, desulfurization and denitration tower upper portion is connected with the air duct, the air duct links to each other with the dehumidifier entrance point, the dehumidifier exit end is connected with the air supply house steward, install the draught fan on the air supply house steward, the air supply house steward is connected with air supply branch pipe A and air supply branch pipe B through three way connection, install air supply valve A and air supply branch pipe B on air supply branch pipe A and the air supply branch pipe B respectively, air supply branch pipe A and air supply branch pipe B are connected with B through air supply pipe B in the air supply branch pipe A and air supply branch pipe B, sleeve tank A left side upper portion is connected with air supply branch pipe A, sleeve tank B left side upper portion is connected with air supply pipe B, air supply pipe A and air supply pipe B installs air outlet valve A and air supply pipe B respectively on air supply pipe A and air supply branch pipe B, the air supply pipe B is connected with cement kiln through three way connection, the other end links to each other end.
Further, filter screen A and filter screen C's left end height all is less than right-hand member height separately, filter screen B and filter screen D's left end height all is less than right-hand member height separately, and filter screen A, filter screen B, filter screen C and filter screen D slope set up and play the water conservancy diversion effect, are favorable to fully filtering waste gas, and dust removal effect is good.
Furthermore, the aperture of the filter screen A, the aperture of the filter screen B, the aperture of the filter screen C and the aperture of the filter screen D are sequentially reduced, dust is removed through classified filtration, and the dust removal effect is improved.
Furtherly, dust removal jar A and dust removal jar B's upper surface all is provided with the water filling port, the detachable sealing plug that is connected with on the water filling port, dust removal jar A and dust removal jar B's lower part is hourglass hopper-shaped, dust removal jar A and dust removal jar B's lower surface middle part all is connected with the drain pipe, install the liquid valve on the drain pipe, the drain pipe below is provided with the collection liquid tank.
Further, stoving jar left side upper portion is connected with the inlet pipe, install the feed valve on the inlet pipe, stoving jar left side mid-mounting has the motor, the output shaft of motor has the (mixing) shaft, the (mixing) shaft passes through the bearing and links to each other with stoving jar left side wall, the (mixing) shaft right-hand member passes through the bearing frame and links to each other with stoving jar right side inner wall, fixedly connected with stirring vane on the (mixing) shaft, cover jar C inside wall fixedly connected with guide plate, stoving jar right side sub-unit connection has the discharging pipe, install the bleeder valve on the discharging pipe.
Furthermore, the fixed end of the stirring blade is deviated by 2-5cm leftwards relative to the free end, the fixed end of the guide plate is deviated by 2-5cm leftwards relative to the free end, the stirring blade enables the material to move towards the inner side wall of the drying tank in the drying tank, and the guide plate enables the hot gas to flow along the outer side wall of the drying tank, so that the hot gas and the material can be subjected to sufficient heat exchange, the drying effect is improved, and the waste heat of the hot gas is fully utilized.
Further, inlet pipe and discharging pipe all slope and set up, the inlet pipe free end height is higher than the stiff end height, the discharging pipe free end height is less than the stiff end height, the feeding and the ejection of compact of being convenient for.
Further, the lower portion of the desulfurization and denitrification tower is funnel-shaped, the middle of the lower surface of the desulfurization and denitrification tower is connected with a liquid discharge pipe, a liquid discharge valve is installed on the liquid discharge pipe, and a liquid collection box is arranged below the liquid discharge pipe.
Further, desulfurization denitration agent storage tank upper surface is provided with annotates the liquid mouth, annotate detachable being connected with the sealing plug on the liquid mouth.
Furthermore, the inner side walls of the jacketed tank A, the jacketed tank B and the jacketed tank C are all sprayed with heat insulation coatings, so that the heat insulation effect is good.
The invention has the following beneficial effects:
1. the waste gas is filtered and dedusted through the dedusting tank A and the dedusting tank B, the pore diameters of the filter screen A, the filter screen B, the filter screen C and the filter screen D are sequentially reduced, and the dedusting effect is improved by classified filtration and dedusting; the dust removal tank A and the dust removal tank B are arranged in parallel, the dust removal tank A and the dust removal tank B are used in a one-stop-one method, the filter screens in the dust removal tank A and the dust removal tank B can be cleaned regularly by alternate use, the filter screens are prevented from being blocked after being used for a period of time to influence the filtering and dust removing effects, the filter screens are not required to be stopped for cleaning, and the continuous production is not influenced.
2. Cover jar A and cover jar B have been cup jointed respectively at the outside middle part of dust removal jar A and dust removal jar B, the gas after fresh air and purification dehumidification are handled to the drum in cover jar A and the cover jar B, utilize the waste heat in the waste gas to preheat fresh air in the cover jar and the gas after purification dehumidification are handled, air after preheating is sent to and is increased fresh hot-air for the cement kiln in the cement kiln, effectively utilize the waste gas waste heat, the gas after purification dehumidification recycles after preheating, resource utilization is high, and production cost is reduced.
3. The gas after being dedusted and cooled by the dedusting tank A and the dedusting tank B enters the drying tank, the waste heat in the gas is utilized to carry out heat exchange on the material, the waste heat in the waste gas is further utilized, the waste heat utilization rate is high, the material after being exchanged with the gas is sent to the cement kiln, and the heat consumption of the preheating section of the cement kiln is reduced.
4. In gas through dust removal and two-stage cooling processing enters into SOx/NOx control tower, gas is by supreme flow down, divide the shower nozzle of liquid pipe lower extreme to spray SOx/NOx control agent, SOx/NOx control agent' S flow direction is by under, SOx/NOx control agent and gaseous reverse flow, be favorable to carrying out abundant SOx/NOx control processing to gas, and SOx/NOx control tower inside wall fixedly connected with drainage plate, the setting up of drainage plate makes gas and SOx/NOx control agent be the S-shaped flow, increase both area of contact, improve SOx/NOx control effect.
5. The gas after desulfurization and denitrification is dehumidified by the dehumidifier, the dehumidified gas enters the jacketed tank A and the jacketed tank B, and the dehumidified gas absorbs heat in waste gas and then enters the cement kiln for cyclic utilization, so that the resource utilization rate is improved.
Drawings
FIG. 1 is a schematic structural view of an apparatus for purifying exhaust gas in cement production according to the present invention.
In the figure: 1-air inlet pipe A, 2-blower A, 3-filter screen B, 4-filter screen A, 5-liquid outlet valve, 6-liquid collecting tank, 7-liquid outlet pipe, 8-dust removing tank A, 9-air inlet branch pipe B, 10-air inlet branch pipe A, 11-air inlet valve B, 12-exhaust fan, 13-air inlet main pipe, 14-three-way joint, 15-air inlet valve A, 16-set tank A, 17-air outlet branch pipe A, 18-air outlet valve A, 19-air outlet main pipe, 20-air outlet branch pipe B, 21-sealing plug, 22-water injection port, 23-filter screen C, 24-filter screen D, 25-exhaust valve A, 26-air outlet branch pipe A, 27-air outlet valve B, 28-air inlet branch pipe A, 29-air inlet valve A, 30-an exhaust branch pipe B, 31-an air feeding valve B, 32-an air feeding main pipe, 33-a dedusting tank B, 34-an exhaust valve B, 35-an exhaust main pipe, 36-an air feeding branch pipe B, 37-a feed valve, 38-a feed pipe, 39-a drying tank, 40-a jacketed tank C, 41-a guide plate, 42-an air outlet pipe, 43-a desulfurization and denitrification tower, 44-a liquid distribution pipe, 45-a spray head, 46-an air guide pipe, 47-a guide plate, 48-a liquid injection port, 49-a desulfurization and denitrification agent storage tank, 50-a dehumidifier, 51-a liquid extraction pipe, 52-a liquid extraction pump, 53-a liquid discharge valve, 54-a liquid discharge pipe, 55-a liquid collection tank, 56-a discharge valve, 57-a liquid discharge pipe, 58-a bearing seat and 59-a stirring blade, 60-stirring shaft, 61-motor, 62-blower B, 63-air inlet pipe B, 64-jacketed tank B, 65-draught fan.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1, a waste gas purification apparatus in cement production, including dust removal mechanism and air exhauster 12, dust removal mechanism includes dust removal tank A8 and dust removal tank B33, dust removal tank B33 is located right-hand side of dust removal tank A8, cover jar a16 and cover jar B64 have been cup jointed respectively in the outside middle part of dust removal tank A8 and dust removal tank B33, the right-hand stoving jar 39 that is provided with of dust removal tank B33, cover jar C40 is cup jointed in the outside of stoving jar 39, the right-hand desulfurization denitration tower 43 that is provided with of stoving jar 39, the right-hand desulfurization denitration tower 49 that is provided with of desulfurization denitration tower 43, the right-hand dehumidifier 50 that is provided with of desulfurization denitration agent storage tank 49, air exhauster 12 input end links to each other with the cement kiln blast pipe, air exhauster 12 output is connected with intake manifold 13, intake manifold 13 is connected with intake manifold a10 and intake branch pipe B9 through three way joint 14, intake branch a15 and intake valve B11 are installed respectively on intake branch a10 and intake branch pipe B9, intake branch pipe a10 and intake branch pipe B9, the other end links to each other end of intake branch pipe a10 and exhaust manifold 30 a 3, exhaust manifold 30 and exhaust manifold B3 are connected to exhaust manifold 30 a 3 and exhaust manifold 30B 3 through three way connector, exhaust manifold B3 and exhaust manifold B3 respectively, exhaust manifold 30 a exhaust manifold 30 and exhaust manifold B3, exhaust manifold 30 and exhaust manifold 30 a exhaust manifold 30 and exhaust manifold B3 respectively, the left side sub-unit connection of SOx/NOx control agent storage tank 49 has liquid suction pipe 51, the liquid suction pipe 51 other end is connected with the liquid distribution pipe 44 through drawing liquid pump 52, the upper portion in SOx/NOx control tower 43 is inserted to the liquid distribution pipe 44 other end, shower nozzle 45 is installed to liquid distribution pipe 44 lower extreme, SOx/NOx control tower 43 inside wall fixedly connected with drainage plate 47, SOx/NOx control tower 43 upper portion is connected with air duct 46, air duct 46 links to each other with 50 entrance points of dehumidifier, 50 exit ends of dehumidifier are connected with air supply header pipe 32, install draught fan 65 on the air supply header pipe 32, air supply header pipe 32 is connected with air supply branch pipe A28 and air supply branch pipe B36 through three way connection 14, air supply branch pipe A28 and air supply branch pipe B36 are installed air supply valve A29 and air supply valve B31 on air supply branch pipe A28 and the air supply branch pipe B36 respectively, the air supply branch pipe A28 other end links to each other end and the cover jar A16 right side lower part links to each other, the cover jar A36 right side lower part links to each other end and the cover jar B64 right side lower part links to each other, the cover jar A16 that gives vent to the lower part is connected with air supply pipe A1 and is connected with air supply pipe 17A 17 and the cover jar 20 that gives vent to give vent to each other end of giving vent to the air supply pipe 17A 17, the upper portion of giving vent to the air supply pipe 17A 17 and the upper portion of the cement kiln 20 are connected with the air supply pipe 17 and the air outlet branch pipe 17.
The left end heights of the filter screen A4 and the filter screen C23 are lower than the respective right end heights, and the left end heights of the filter screen B3 and the filter screen D24 are lower than the respective right end heights.
And the aperture of the filter screen A4, the aperture of the filter screen B3, the aperture of the filter screen C23 and the aperture of the filter screen D24 are sequentially reduced.
Dust removal jar A8 and dust removal jar B33's upper surface all is provided with water filling port 22, detachable sealing plug 21 that is connected with on the water filling port 22, dust removal jar A8 and dust removal jar B33's lower part is hourglass hopper-shaped, dust removal jar A8 and dust removal jar B33's lower surface middle part all is connected with drain pipe 7, install drain valve 5 on the drain pipe 7, drain pipe 7 below is provided with collection liquid tank 6.
Drying tank 39 left side upper portion is connected with inlet pipe 38, install feed valve 37 on the inlet pipe 38, drying tank 39 left side mid-mounting has motor 61, the output shaft of motor 61 has (mixing) shaft 60, (mixing) shaft 60 passes through the bearing and links to each other with drying tank 39 left side wall, the (mixing) shaft 60 right-hand member passes through bearing frame 58 and links to each other with drying tank 39 right side inner wall, fixedly connected with stirring vane 59 on the (mixing) shaft 60, cover jar C40 inside wall fixedly connected with guide plate 41, drying tank 39 right side sub-unit connection has discharging pipe 57, install bleeder valve 56 on the discharging pipe 57.
The fixed end of the stirring blade 59 is deviated from the free end by 2-5cm to the left, and the fixed end of the deflector 41 is deviated from the free end by 2-5cm to the left.
The inlet pipe 38 and the discharging pipe 57 are all obliquely arranged, the height of the free end of the inlet pipe 38 is higher than that of the fixed end, and the height of the free end of the discharging pipe 57 is lower than that of the fixed end.
The lower part of the desulfurization and denitrification tower 43 is funnel-shaped, the middle part of the lower surface of the desulfurization and denitrification tower 43 is connected with a liquid discharge pipe 54, a liquid discharge valve 53 is installed on the liquid discharge pipe 54, and a liquid collection tank 55 is arranged below the liquid discharge pipe 54.
The upper surface of the desulfurization and denitrification agent storage tank 49 is provided with a liquid injection port 48, and the liquid injection port 48 is detachably connected with a sealing plug.
And the inner side walls of the jacketed tank A16, the jacketed tank B64 and the jacketed tank C40 are all sprayed with heat-insulating coatings.
The working principle of the embodiment is as follows: under the action of an exhaust fan, waste gas generated in the cement production process enters an air inlet main pipe, the air inlet main pipe is connected with an air inlet branch pipe A and an air inlet branch pipe B through a three-way joint, the waste gas respectively enters the lower parts of the dust removal tank A and the dust removal tank B through the air inlet branch pipe A and the air inlet branch pipe B, and the waste gas is subjected to graded filtering and dust removal through a filter screen A, a filter screen B, a filter screen C and a filter screen D in the upward flowing process, so that the dust removal effect is good; in the dust removal process, the waste heat in the waste gas is utilized to preheat the fresh air in the sleeve tank and the gas after purification and dehumidification treatment, the preheated air is sent into the cement kiln to add fresh hot air to the cement kiln, the waste heat of the waste gas is effectively utilized, the purified and dehumidified gas is recycled after being preheated, the resource utilization rate is high, and the production cost is reduced; the dust removal tank A and the dust removal tank B are arranged in parallel, the dust removal tank A and the dust removal tank B are used in a one-stop-one method, and the alternate use is favorable for cleaning the filter screens in the dust removal tank A and the dust removal tank B regularly, so that the filter screens are prevented from being blocked after being used for a period of time to influence the filtering and dust removing effects, and the continuous production is not influenced because the filter screens are not required to be cleaned in a stopped manner;
the gas after being dedusted and cooled by the dedusting tank A and the dedusting tank B enters the drying tank, the waste heat in the gas is utilized to carry out heat exchange on the materials, the waste heat in the waste gas is further utilized, the utilization rate of the waste heat is high, the materials after being exchanged with the gas are sent to the cement kiln, and the heat consumption of the preheating section of the cement kiln is reduced;
the gas after dust removal and two-stage cooling treatment enters the desulfurization and denitrification tower, the gas flows from bottom to top, the spray heads at the lower ends of the liquid distribution pipes spray desulfurization and denitrification agents, the desulfurization and denitrification agents flow from top to bottom in the reverse direction, full desulfurization and denitrification treatment can be performed on the gas, the inner side wall of the desulfurization and denitrification tower is fixedly connected with the drainage plate, the gas and the desulfurization and denitrification agents flow in an S shape due to the arrangement of the drainage plate, the contact area of the gas and the desulfurization and denitrification agents is increased, and the desulfurization and denitrification effects are improved;
the gas after desulfurization and denitrification is dehumidified by the dehumidifier, the dehumidified gas enters the jacketed tank A and the jacketed tank B, and the dehumidified gas absorbs heat in waste gas and then enters the cement kiln for cyclic utilization, so that the resource utilization rate is improved.
Claims (5)
1. The utility model provides a waste gas purification equipment in cement manufacture, includes dust removal mechanism and air exhauster, its characterized in that: the dust removal mechanism comprises a dust removal tank A and a dust removal tank B, the dust removal tank B is positioned on the right of the dust removal tank A, the middle parts of the outer sides of the dust removal tank A and the dust removal tank B are respectively sleeved with a sleeve tank A and a sleeve tank B, a drying tank is arranged on the right of the dust removal tank B, the outer side of the drying tank is sleeved with a sleeve tank C, a desulfurization and denitrification tower is arranged on the right of the drying tank, a desulfurization and denitrification agent storage tank is arranged on the right of the desulfurization and denitrification tower, and a dehumidifier is arranged on the right of the desulfurization and denitrification agent storage tank;
the inlet end of the exhaust fan is connected with an exhaust pipe of the cement kiln, the outlet end of the exhaust fan is connected with an air inlet main pipe, the air inlet main pipe is connected with an air inlet branch pipe A and an air inlet branch pipe B through a three-way joint, the air inlet branch pipe A and the air inlet branch pipe B are respectively provided with an air inlet valve A and an air inlet valve B, the other end of the air inlet branch pipe A is connected with the lower part of the left side of the dedusting tank A, the other end of the air inlet branch pipe B is connected with the lower part of the left side of the dedusting tank B, the interiors of the dedusting tank A and the dedusting tank B are respectively connected with a filter screen A, a filter screen B, a filter screen C and a filter screen D from bottom to top, the apertures of the filter screen A, the filter screen B, the filter screen C and the filter screen D are sequentially reduced, the upper parts of the right sides of the dedusting tank A and the dedusting tank B are respectively connected with an exhaust branch pipe A and an exhaust branch pipe B, the exhaust branch pipe A and the exhaust branch pipe B are respectively installed on the exhaust branch pipe A and the exhaust branch pipe B, the exhaust branch pipe A and the exhaust pipe B are connected with an exhaust main pipe through a three-way joint, the other end of the exhaust pipe is connected with the lower part of the left side of the jacket C, and the jacket C;
the device comprises a desulfurization and denitrification agent storage tank, a drainage pipe, a gas guide pipe, a dehumidifier outlet end, a gas supply main pipe, a draught fan, a gas supply branch pipe A and a gas supply branch pipe B, wherein the lower part of the left side of the desulfurization and denitrification agent storage tank is connected with a liquid extraction pipe, the other end of the liquid extraction pipe is inserted into the upper part of a desulfurization and denitrification tower, the lower end of the liquid extraction pipe is provided with a spray head, the inner side wall of the desulfurization and denitrification tower is fixedly connected with a drainage plate, the upper part of the desulfurization and denitrification tower is connected with the gas guide pipe, the gas guide pipe is connected with the inlet end of the dehumidifier, the outlet end of the dehumidifier is connected with a gas supply main pipe, the gas supply main pipe is connected with the draught fan, the gas supply main pipe is connected with the gas supply branch pipe A and the gas supply branch pipe B through a tee joint, the gas supply branch pipe A and the gas supply branch pipe B are respectively installed on the gas supply branch pipe A and the gas supply branch pipe B, the other end of the gas supply branch pipe A is connected with the right lower part of a sleeve A, the gas supply pipe B, the left side of the sleeve B is connected with a gas supply branch pipe A, the gas supply pipe B, the left side upper part of the sleeve B is connected with a gas supply pipe B, and a cement kiln through a joint;
the upper surfaces of the dust removing tank A and the dust removing tank B are respectively provided with a water filling port, the water filling ports are detachably connected with sealing plugs, the lower parts of the dust removing tank A and the dust removing tank B are funnel-shaped, the middle parts of the lower surfaces of the dust removing tank A and the dust removing tank B are respectively connected with a liquid outlet pipe, a liquid outlet valve is arranged on the liquid outlet pipe, and a liquid collecting tank is arranged below the liquid outlet pipe;
the automatic stirring device is characterized in that the upper part of the left side of the drying tank is connected with a feeding pipe, the feeding pipe is provided with a feeding valve, the middle part of the left side of the drying tank is provided with a motor, an output shaft of the motor is connected with a stirring shaft, the stirring shaft is connected with the left side wall of the drying tank through a bearing, the right end of the stirring shaft is connected with the right side inner wall of the drying tank through a bearing seat, the stirring shaft is fixedly connected with a stirring blade, the inner side wall of the sleeve tank C is fixedly connected with a guide plate, the lower part of the right side of the drying tank is connected with a discharging pipe, the discharging pipe is provided with a discharging valve, the fixed end of the stirring blade deviates 2-5cm leftwards relative to the free end, and the fixed end of the guide plate deviates 2-5cm leftwards relative to the free end; and the inner side walls of the jacketed tank A, the jacketed tank B and the jacketed tank C are all sprayed with heat-insulating coatings.
2. The exhaust gas purifying apparatus in cement production according to claim 1, wherein: the left end heights of the filter screen A and the filter screen C are lower than the respective right end heights, and the left end heights of the filter screen B and the filter screen D are lower than the respective right end heights.
3. The exhaust gas purifying apparatus in cement production according to claim 1, wherein: the inlet pipe and the discharging pipe all incline to set up, the inlet pipe free end height is higher than the stiff end height, the discharging pipe free end height is less than the stiff end height.
4. The exhaust gas purifying apparatus in cement production according to claim 1, wherein: the desulfurization and denitrification tower lower part is for leaking hopper-shaped, desulfurization and denitrification tower lower surface middle part is connected with the fluid-discharge tube, install the flowing back valve on the fluid-discharge tube, the fluid-discharge tube below is provided with receives the liquid case.
5. The exhaust gas purifying apparatus in cement production according to claim 1, wherein: desulfurization denitrifier storage tank upper surface is provided with annotates the liquid mouth, annotate detachable being connected with the sealing plug on the liquid mouth.
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| CN202010905703.4A CN112023540B (en) | 2020-09-01 | 2020-09-01 | Waste gas purification equipment in cement production |
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| CN202010905703.4A CN112023540B (en) | 2020-09-01 | 2020-09-01 | Waste gas purification equipment in cement production |
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| CN115518482A (en) * | 2022-09-13 | 2022-12-27 | 帅翼驰(河南)新材料科技有限公司 | Secondary aluminum exhaust gas circulation purification system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101197711B1 (en) * | 2009-09-18 | 2012-11-06 | 김두현 | Water jet type dust collector |
| KR101411924B1 (en) * | 2012-12-17 | 2014-06-26 | 한영무 | Dust collector for removing high temperature dust |
| CN206424728U (en) * | 2016-12-22 | 2017-08-22 | 重庆科技学院 | A kind of exhaust treatment system of smelting furnace |
| CN207126318U (en) * | 2017-09-01 | 2018-03-23 | 李伟斯 | A kind of sintered discharge gas waste heat recovery and purifier |
| CN207769439U (en) * | 2017-12-29 | 2018-08-28 | 眉山市博眉启明星铝业有限公司 | A kind of UTILIZATION OF VESIDUAL HEAT IN and flue gas purification system for aluminium smelting furnace |
| CN208599409U (en) * | 2018-06-28 | 2019-03-15 | 清远市敬威能源开发有限公司 | A kind of flue gas processing device for boiler |
| CN209162154U (en) * | 2018-12-10 | 2019-07-26 | 德兴市益丰再生有色金属有限责任公司 | Secondary metal smelting exhaust waste-heat recovery device |
| CN109631603A (en) * | 2018-12-29 | 2019-04-16 | 巢湖云海镁业有限公司 | Dust-extraction unit on smelting furnace |
| CN210473569U (en) * | 2019-06-20 | 2020-05-08 | 河南亚新窑炉有限公司 | Single-channel kiln flue gas denitration and desulfurization device |
| CN211245973U (en) * | 2019-11-05 | 2020-08-14 | 淮安华科环保科技有限公司 | Waste gas waste heat utilization air inlet structure |
| CN110721578A (en) * | 2019-11-12 | 2020-01-24 | 国家能源集团泰州发电有限公司 | High-efficient dust removal desulphurization unit of thermal power factory waste gas |
| CN211111743U (en) * | 2019-11-20 | 2020-07-28 | 张家界荣丰新材料有限公司 | Lime calcining kiln with tail gas purification system |
| CN110787610A (en) * | 2019-12-14 | 2020-02-14 | 河南越尔环保科技有限公司 | Tail gas treatment device for calcining furnace |
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Application publication date: 20201204 Assignee: Hubo Lingwei Group Yuzhou Jinhubao Cement Co.,Ltd. Assignor: Henan Hubolingwei Cement Group Co.,Ltd. Contract record no.: X2024980002355 Denomination of invention: A waste gas purification equipment in cement production Granted publication date: 20221025 License type: Common License Record date: 20240304 |
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