CN111298568A - Dust removal and filtration equipment and dust removal process thereof - Google Patents

Dust removal and filtration equipment and dust removal process thereof Download PDF

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Publication number
CN111298568A
CN111298568A CN201811516084.9A CN201811516084A CN111298568A CN 111298568 A CN111298568 A CN 111298568A CN 201811516084 A CN201811516084 A CN 201811516084A CN 111298568 A CN111298568 A CN 111298568A
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CN
China
Prior art keywords
dust
water
dust removal
smoke
sludge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811516084.9A
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Chinese (zh)
Inventor
薄利平
薄立群
毛洪林
薄铭元
熊健
薄明志
王爱文
宋林武
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Qian'an Huihai Technology Development Co Ltd
Original Assignee
Qian'an Huihai Technology Development Co Ltd
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Filing date
Publication date
Application filed by Qian'an Huihai Technology Development Co Ltd filed Critical Qian'an Huihai Technology Development Co Ltd
Priority to CN201811516084.9A priority Critical patent/CN111298568A/en
Publication of CN111298568A publication Critical patent/CN111298568A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D47/00Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/12Washers with plural different washing sections
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D5/00Condensation of vapours; Recovering volatile solvents by condensation

Abstract

A dust removing and filtering device and a dust removing process thereof relate to the technical field of dust removing processes, in particular to a dust removing and filtering device and a dust removing process thereof. The smoke collecting cover is connected to a water film dust removing device through a cooling flue, and the water film dust removing device is connected with a smoke prevention and dust reduction device and a spraying system; one end of the smoke prevention and dust reduction device is connected with the sludge pond and the water filtering pond through mud-water separation equipment, the other end of the smoke prevention and dust reduction device is connected with the air exhaust port through an induced draft fan, the sludge treatment equipment is connected with the sludge pond, the water filtering pond is connected with a water purification and temperature reduction device, and the water purification and temperature reduction device is connected with a water film dust removal device and a spraying system. After the technical scheme is adopted, the invention has the beneficial effects that: the dust removal effect is obvious, stable and reliable, smoke abatement, dust fall and water purification can be automatically circulated, manual on-duty treatment is not needed, the smoke abatement and dust fall process performance is further improved, a large amount of reconstruction funds are saved, the dust removal effect is improved, and the dust removal device is widely applicable to industries such as electric power, water conservancy, steel, chemical engineering and the like.

Description

Dust removal and filtration equipment and dust removal process thereof
Technical Field
The invention relates to the technical field of dust removal processes, in particular to a dust removal and filtration device and a dust removal process thereof.
Background
In recent years, with rapid development of economy, metallurgical steelmaking electric furnaces and raw coal-fired boilers have increased, and the atmospheric pollutants discharged from these furnaces pose great harm to the surrounding environment, so that a technology for removing particulate matters from dust-containing gas to reduce the emission thereof to the atmosphere has become more and more important.
The dust-containing industrial waste gas is generated from mechanical processes such as crushing, screening, conveying and blasting of solid substances, or from processes such as combustion, high-temperature melting and chemical reaction. The former contains dust with large particle size and chemical composition the same as the original solid matter, and the latter contains dust with small particle size and chemical property different from that of the substance to be generated. Improvements in production processes and combustion techniques can reduce particulate generation. Dust collectors are widely used to control dust and fumes that have been generated.
The trapping mechanism can be classified into a mechanical dust collector, an electric dust collector, a filtering dust collector, a washing dust collector and the like. The mechanical dust remover removes dust particles from the airflow by means of mechanical force, and has the advantages of simple structure, low equipment cost and operation cost, but low dust removal efficiency. The electrostatic precipitator utilizes electrostatic force to separate dust particles from air flow, and is usually classified according to plate type and tube type, and is characterized by small air flow resistance, high dust removal efficiency up to more than 99%, but high investment. The occupied area is large. The filter dust collector enables dust-containing gas to flow through the filter material to separate and collect dust particles, and adopts two modes of internal filtering and surface filtering, so that the dust collection efficiency is generally 90-99%, and the filter dust collector is not suitable for dust-containing gas with high temperature. The washing dust remover washes dust-containing gas by liquid, so that dust particles collide with liquid drops or liquid films to be captured and are separated from gas flow, the dust removal efficiency is 80-95%, and the operation cost is high. In order to improve the efficiency of trapping particles, new dust collectors integrating several dust removal mechanisms, such as a charged bag filter, a charged droplet scrubber, and the like, are being developed.
The traditional dust removal mode is simple, only one dust removal process is usually adopted, the dust removal effect is poor, the emission numerical value specified by the state cannot be reached, and the environment is greatly polluted.
Disclosure of Invention
The invention aims to provide a dust removing and filtering device and a dust removing process thereof aiming at the defects and defects of the prior art, wherein the device adopts multi-stage dust removing and filtering devices to strengthen dust and water mixing, so that the emission concentration of steelmaking dust in a workshop or a factory is effectively controlled to be 30mg/m3Within the range of 15-20mg/m3The following; the dust removal effect is obvious, stable and reliable, dust removal and water purification can be automatically circulated, manual on-duty treatment is not needed, the primary and secondary dust removal process performance is further improved, a large amount of reconstruction funds are saved, and the dust removal effect is improved.
In order to achieve the purpose, the invention adopts the following technical scheme: the device comprises flue gas 1, a flue gas collecting cover 2, a cooling flue 3, a water film dust removal device 4, a smoke prevention and dust removal device 5, an induced draft fan 6, an air outlet 7, mud-water separation equipment 8, a sludge tank 81, sludge treatment equipment 82, a water filtering tank 83, a purified water cooling device 84 and a spraying system 9; the flue gas collecting cover 2 is connected to a water film dust removing device 4 through a cooling flue 3, and the water film dust removing device 4 is connected with a smoke prevention and dust control device 5 and a spraying system 9; the one end of the smoke prevention and dust fall device 5 is connected with a sludge tank 81 and a water filtering tank 83 through a mud-water separation device 8, the other end of the smoke prevention and dust fall device 5 is connected with an air outlet 7 through an induced draft fan 6, a sludge treatment device 82 is connected with the sludge tank 81, the water filtering tank 83 is connected with a water purification and temperature reduction device 84, and the water purification and temperature reduction device 84 is connected with a water film dust removal device 4 and a spraying system 9.
A dust removing and filtering device and a dust removing process thereof adopt the following process steps:
step one, high-temperature flue gas generated in a workshop or a factory is captured by a flue gas capturing cover;
secondly, the flue gas enters a water film dust removal device for water and dust mixing;
step three, the mixture obtained in the step two enters a smoke prevention and dust control device to perform smoke prevention and dust control;
fourthly, discharging smoke after smoke abatement and dust reduction to a chimney through a draught fan shaft, and enabling the residual mixed muddy water to enter muddy water separation equipment;
and fifthly, separating mud and water by mud-water separation equipment, and recycling.
After the technical scheme is adopted, the invention has the beneficial effects that: the dust removal effect is obvious, stable and reliable, dust removal and water purification can be automatically circulated, manual on-duty treatment is not needed, the primary and secondary dust removal process performance is further improved, a large amount of reconstruction funds are saved, the dust removal effect is improved, and the dust removal device is widely applicable to industries such as electric power, water conservancy, steel, chemical engineering and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a process flow diagram of the present invention.
Description of reference numerals: the device comprises flue gas 1, a flue gas collecting cover 2, a cooling flue 3, a water film dust removal device 4, a smoke prevention and dust reduction device 5, an induced draft fan 6, an air outlet 7, mud-water separation equipment 8, a sludge pond 81, sludge treatment equipment 82, a water filtering pond 83, a purified water cooling device 84 and a spraying system 9.
Detailed Description
Referring to fig. 1, the technical solution adopted by the present embodiment is: the device comprises flue gas 1, a flue gas collecting cover 2, a cooling flue 3, a water film dust removal device 4, a smoke prevention and dust removal device 5, an induced draft fan 6, an air outlet 7, mud-water separation equipment 8, a sludge tank 81, sludge treatment equipment 82, a water filtering tank 83, a purified water cooling device 84 and a spraying system 9; the flue gas collecting cover 2 is connected to a water film dust removing device 4 through a cooling flue 3, and the water film dust removing device 4 is connected with a smoke prevention and dust control device 5 and a spraying system 9; the one end of the smoke prevention and dust fall device 5 is connected with a sludge tank 81 and a water filtering tank 83 through a mud-water separation device 8, the other end of the smoke prevention and dust fall device 5 is connected with an air outlet 7 through an induced draft fan 6, a sludge treatment device 82 is connected with the sludge tank 81, the water filtering tank 83 is connected with a water purification and temperature reduction device 84, and the water purification and temperature reduction device 84 is connected with a water film dust removal device 4 and a spraying system 9.
A dust removing and filtering device and a dust removing process thereof adopt the following process steps:
step one, high-temperature flue gas generated in a workshop or a factory is collected by a flue gas collecting cover and then enters a cooling flue to be cooled;
step two, when the cooling temperature in the step one is about seventy ℃, the flue gas enters a water film dust removal device, the water film dust removal device adopts a water dust removal tower, and the water dust removal tower is matched with the water dust removal tower to be 20-30mg/m3The spraying system mixes dust and water;
step three, the mixed dust and water in the step two enters a smoke prevention and dust fall device for condensation, and the smoke prevention and dust fall device adopts an axial flow fan for air cooling condensation;
step four, the smoke after the white smoke and the water vapor are removed through condensation is pumped to a chimney through a draught fan to be discharged, and the residual mixed muddy water enters muddy water separation equipment;
step five, carrying out dehydration treatment on the mud and water by mud and water separation equipment, enabling the dehydrated mud to enter a sludge tank and be treated by a sludge treatment device, and enabling the separated sewage to enter a water filtering tank; the separated sewage has the temperature of 30-50 degrees, and the sewage is cooled and purified into pure water by water purification and temperature reduction equipment and then returned to the water film dust removal device and the spraying system for recycling.
The flue gas trapping cover 2 is a movable flue gas trapping cover.
The cooling flue 3 is a vaporization cooling flue.
The water film dust removing device 4 is a high-efficiency water dust removing tower.
The saturation temperature of the first step is 72 ℃.
After the technical scheme is adopted, the invention has the beneficial effects that: the dust removal effect is obvious, stable and reliable, smoke abatement, dust fall and water purification can be automatically circulated, manual on-duty treatment is not needed, the smoke abatement and dust fall process performance is further improved, a large amount of reconstruction funds are saved, the dust removal effect is improved, and the dust removal device is widely applicable to industries such as electric power, water conservancy, steel, chemical engineering and the like.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (6)

1. The utility model provides a dust removal and dust filtration equipment which characterized in that: the device comprises flue gas (1), a flue gas collecting cover (2), a cooling flue (3), a water film dust removal device (4), a smoke abatement dust removal device (5), an induced draft fan (6), an air outlet (7), mud-water separation equipment (8), a sludge tank (81), sludge treatment equipment (82), a water filtering tank (83), a water purification and temperature reduction device (84) and a spraying system (9); the flue gas collecting cover (2) is connected to a water film dust removing device (4) through a cooling flue (3), and the water film dust removing device (4) is connected with a smoke prevention and dust reduction device (5) and a spraying system (9); one end of the smoke prevention and dust fall device (5) is connected with a sludge tank (81) and a water filtering tank (83) through a mud-water separation device (8), the other end of the smoke prevention and dust fall device (5) is connected with an air outlet (7) through an induced draft fan (6), a sludge treatment device (82) is connected with the sludge tank (81), the water filtering tank (83) is connected with a water purification cooling device (84), and the water purification cooling device (84) is connected with a water film dust removal device (4) and a spraying system (9).
2. A dust removal process of dust removal and filtration equipment is characterized by comprising the following process steps: firstly, high-temperature flue gas generated in a workshop or a factory is collected by a flue gas collecting cover and then enters a cooling flue to be vaporized and cooled; step two, when the cooling temperature in the step one is about seventy ℃, the flue gas enters a water film dust removal device, the water film dust removal device adopts a water dust removal tower, and the water dust removal tower is matched with the water dust removal tower to be 20-30mg/m3The spraying system mixes dust and water; thirdly, the dust and water mixed in the second step enter a smoke prevention and dust fall device for condensation, and the smoke prevention and dust fall device adopts an axial flow fan for air cooling condensation; fourthly, the smoke which is condensed to eliminate white smoke and reduce water vapor passes through a draught fan shaft toDischarging the sludge through a chimney, and feeding the residual mixed sludge water into sludge-water separation equipment; step five, carrying out dehydration treatment on the mud and water by mud and water separation equipment, enabling the dehydrated mud to enter a sludge tank and be treated by a sludge treatment device, and enabling the separated sewage to enter a water filtering tank; the separated sewage has the temperature of 30-50 degrees, and the sewage is cooled and purified into pure water by water purification and temperature reduction equipment and then returned to the water film dust removal device and the spraying system for recycling.
3. A dust-removing and dust-filtering apparatus according to claim 1, wherein: the smoke collecting cover (2) is a movable smoke collecting cover.
4. A dust-removing and dust-filtering apparatus according to claim 1, wherein: the cooling flue (3) is a vaporization cooling flue.
5. A dust-removing and dust-filtering apparatus according to claim 1, wherein: the water film dust removal device (4) is a high-efficiency water dust removal tower.
6. The dust removal process of the dust removal and filtration equipment according to claim 2, wherein: the saturation temperature of the first step is seventy-two ℃.
CN201811516084.9A 2018-12-12 2018-12-12 Dust removal and filtration equipment and dust removal process thereof Pending CN111298568A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811516084.9A CN111298568A (en) 2018-12-12 2018-12-12 Dust removal and filtration equipment and dust removal process thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811516084.9A CN111298568A (en) 2018-12-12 2018-12-12 Dust removal and filtration equipment and dust removal process thereof

Publications (1)

Publication Number Publication Date
CN111298568A true CN111298568A (en) 2020-06-19

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ID=71161286

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811516084.9A Pending CN111298568A (en) 2018-12-12 2018-12-12 Dust removal and filtration equipment and dust removal process thereof

Country Status (1)

Country Link
CN (1) CN111298568A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2895751Y (en) * 2006-04-06 2007-05-02 南京联众机电制造有限公司 Exhaust-gas temperature-reducing, smoke-eliminating and defoging apparatus fo tunnel diesel-oil generator
US20150041720A1 (en) * 2011-12-29 2015-02-12 Wuhan Kaidi General Research Institute Of Engineering & Technology Co., Ltd. Method of purification of biomass syngas under negative pressure
CN207391475U (en) * 2017-09-22 2018-05-22 辽宁基伊能源科技有限公司 A kind of Wetting once dust collection of converter gas cleaning integrated system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2895751Y (en) * 2006-04-06 2007-05-02 南京联众机电制造有限公司 Exhaust-gas temperature-reducing, smoke-eliminating and defoging apparatus fo tunnel diesel-oil generator
US20150041720A1 (en) * 2011-12-29 2015-02-12 Wuhan Kaidi General Research Institute Of Engineering & Technology Co., Ltd. Method of purification of biomass syngas under negative pressure
CN207391475U (en) * 2017-09-22 2018-05-22 辽宁基伊能源科技有限公司 A kind of Wetting once dust collection of converter gas cleaning integrated system

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