CN107029512A - The smoke and dust eliminating method and equipment of white cigarette gas - Google Patents

The smoke and dust eliminating method and equipment of white cigarette gas Download PDF

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Publication number
CN107029512A
CN107029512A CN201710328485.0A CN201710328485A CN107029512A CN 107029512 A CN107029512 A CN 107029512A CN 201710328485 A CN201710328485 A CN 201710328485A CN 107029512 A CN107029512 A CN 107029512A
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CN
China
Prior art keywords
smoke
flue gas
smoke elimination
elimination tower
tower
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
CN201710328485.0A
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Chinese (zh)
Inventor
陶予敏
周富江
袁保钦
魏明杰
赵明亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Luoyang Qianbaidu Kiln Technology Co Ltd
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Luoyang Qianbaidu Kiln Technology Co Ltd
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Publication date
Application filed by Luoyang Qianbaidu Kiln Technology Co Ltd filed Critical Luoyang Qianbaidu Kiln Technology Co Ltd
Priority to CN201710328485.0A priority Critical patent/CN107029512A/en
Publication of CN107029512A publication Critical patent/CN107029512A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/002Separation 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 by condensation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D50/00Combinations of methods or devices for separating particles from gases or vapours
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/80Water
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Treating Waste Gases (AREA)

Abstract

The smoke and dust eliminating method of white cigarette gas disclosed by the invention is that the flue gas come out from shaft furnace is entered in smoke elimination tower from the top of smoke elimination tower, in smoke elimination tower Inner by cooling and being discharged after dedusting from flue.Equipment includes smoke elimination tower, air blower, tube type dust removing device and heat-exchange device, described smoke elimination tower is sandwich structure, desulphurization and denitration flue gas inlet port, air blower connector and top flue gas discharge opening are provided with interlayer, the tube type dust removing device is arranged in smoke elimination tower;The heat-exchange tube of the heat-exchange device is located in smoke elimination tower, is intertwined and connected with tube type dust removing device, and the entrance point of the heat-exchange tube is connected through choke valve with radiator, the port of export is connected with hot low-pressure end, and the high-pressure side of heat pump is connected with radiator;The bottom of the smoke elimination tower is provided with bottom flue gas discharge opening.By reducing the discharge temperature of white cigarette mist, enable to settle with the dust that white cigarette mist is floated, reach removing smog, reduce dust, the purpose for eliminating white cigarette, avoiding air pollution.

Description

The smoke and dust eliminating method and equipment of white cigarette gas
Technical field
The invention belongs to the smoke and dust eliminating technology field of white cigarette gas, a kind of smoke abatement and dust control side of white cigarette gas is primarily related to Method and equipment.
Background technology
White cigarette is a kind of cigarette that industrial chimney often emits, and causes the reason for chimney emits white cigarette to be mainly:Flue gas is wet in desulfurizing tower After method desulfurization, the hyperpyrexia in flue gas also forms vapor by moisture absorption, after chimney discharge, when its diffusion velocity is less than waste gas During the condensation rate of middle water vapour, white cigarette will be formed.Therefore when air temperature is high or dry, water recovery lacks in flue gas Or evaporate quickly, white cigarette is just few;Conversely, air temperature is low or during high humidity, the white vapour condensed out is more or evaporation is slow, just seems white Cigarette is dense.
Existing desulfurizing tower to flue gas after desulfurization and dedusting is carried out, although can remove most dust and the dioxy in flue gas Change sulphur, but be difficult thorough removing to the micro ultrafine dust in flue gas, these ultrafine dusts can together be discharged into air in company with white cigarette, Substantial amounts of precious resources-water is not only consumed, and by smog(Water vapour)The dust of entrainment is difficult sedimentation.And it is brilliant with dust Grain is core, haze is formed together with smog, it is not easy to dissipate, and is particularly more difficult to dissipate in the winter time.Hardly possible dissipate the reason for be:Water The smog lta of vapour formation, and remaining dust is very tiny after desulfurization, although it is heavier than air, in the entrainment of smog Under, sedimentation is difficult to, so wanting to allow dust settling to remove the water vapour in smog.
The content of the invention
Thus the purpose of the present invention produces, and a kind of smoke and dust eliminating method of white cigarette gas is proposed, by the row for reducing white cigarette mist Go out temperature, enable to settle with the dust that white cigarette mist is floated, reach removing smog, reduce dust, eliminate white cigarette, avoid air dirty The purpose of dye.
It is another object of the present invention to propose a kind of smoke abatement device of white cigarette gas, the equipment to white cigarette by having Effect cooling, reaches and effectively eliminates white cigarette, the dust that sedimentation is floated with smog, the purpose for avoiding air pollution, with structure design Rationally, easy to use the characteristics of.
Inventor is by the research to white cigarette and dust floatation principle, it is believed that:The dust swum in gas, temperature is higher It is more difficult to sedimentation, the more low then more free settling of temperature;The amount of moisture vapor is more in flue gas, is more difficult to dedusting, easier formation white cigarette, water The content of steam is fewer, easier depositing dust, is less susceptible to form white cigarette.
Principle accordingly, the present invention is adopted the technical scheme that:The flue gas come out from shaft furnace is entered from the top of smoke elimination tower, In smoke elimination tower Inner by cooling and being discharged after dedusting from flue.
Further, described smoke elimination tower is sandwich.
Further, it is described in smoke elimination tower Inner by cooling and the flue gas after dedusting, from smoke elimination tower bottom flue gas discharge After mouth discharge, smoke elimination tower top is entered back into after desulphurization and denitration and is discharged from flue.
Further, the flue gas in the entrance smoke elimination tower cools by three-level, i.e., the flue gas after desulphurization and denitration enters Smoke elimination tower top carries out one-level cooling down to flue gas, and the air that air blower is blasted carries out two to the flue gas after one-level cooling down Level cooling down, refrigerant carries out three-level forced cooling cooling to the flue gas after two grades of cooling downs.
The present invention realizes that the equipment that the smoke and dust eliminating method of white cigarette gas is used includes smoke elimination tower, air blower, heat exchange dress Put, tube type dust removing device, described smoke elimination tower is sandwich structure, and desulphurization and denitration flue gas inlet port, air blower are provided with interlayer Connector and top flue gas discharge opening, the tube type dust removing device are arranged in smoke elimination tower;The heat exchange of the heat-exchange device Pipe is located in smoke elimination tower to be intertwined and connected with tube type dust removing device, the entrance point of the heat-exchange tube is connected through choke valve with radiator, The low-pressure end connection of the port of export and heat pump, the high-pressure side of heat pump is connected with radiator;Under being provided with the bottom of the smoke elimination tower Portion's flue gas discharge opening.
Further, the bottom of the smoke elimination tower is conical by its shape, and bottom is provided with dust outlet, and in dust outlet Position is connected with auger.
Further, the tube type dust removing device is single tube deduster, i.e., single pipe is provided with smoke elimination tower.
Further, the tube type dust removing device is multi-tube dust cleaner, i.e., multiple tubulations are provided with smoke elimination tower.
The method that is cooled by using three-level of the present invention is cooled down to the flue gas that shaft furnace comes out, make flue gas by 180 DEG C or so are down to 35 DEG C or so, have thus more been lacked the content of water vapour in white cigarette gas, have been eliminated white cigarette, are made micro- in flue gas Amount ultrafine dust is settled, it is to avoid pollution to air, while saving water resource.Flue gas after cooling dedusting is by de- Do not discharged directly after sulphur, denitration, but enter smoke elimination tower top and cooling down first is carried out to flue gas, flue gas is entered One step is utilized, and has been saved energy consumption, has been reduced cost.
The air blasted by air blower makes flue gas obtain cooling down again, although the flue gas after being cooled down through air cooling-down There is larger reduction with the temperature difference of air, but still do not reach the requirement of cooling down(Flue gas need cooling down to 10 DEG C- 50℃), therefore, the method that is cooled down with forced cooling further cools.The present invention send refrigerant by using heat pump The interior flue gas to after air cooling-down is cooled down of tower that enters to eliminate smoke carries out forced cooling cooling, the refrigerant after being heated, by adding Pressure radiating, is sent into smoke elimination tower by heat pump and carries out forced cooling cooling to flue gas, this process is carried out again and again again, from And make flue gas obtain forcing cooling.Flue gas after cooling, desulfurization and dedusting just becomes easier, and flue gas turns cold, and easily removes Dirt, and brought into without excessive heat in water, so water temperature will not be raised substantially, the formation of vapor is reduced, is saved Water resource, eliminates white cigarette.Meanwhile, a large amount of dust is removed with dry method by efficiency very high pipe precipitator, these dust can It is that the desulfurization and dedusting of next step is had laid a good foundation without secondary pollution directly to remove.Flue gas feeding after dedusting is de- Sulphur tower carries out desulphurization denitration and dedusting, the dust in flue gas has almost been taken off, sulphur and nitre have also remained little, and flue gas has become Obtain very clean, reach discharge standard, it is to avoid environmental pollution.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is structural representation of the invention.
In figure:1st, smoke elimination tower, 2, air blower, 3, sandwich, 4, tube type dust removing device, 5, desulphurization and denitration flue gas enters Mouthful, 6, top flue gas discharge opening, 7, bottom flue gas discharge opening, 8, heat-exchange tube, 9, heat pump, 10, radiator, 11, choke valve, 12nd, auger.
Embodiment
The present invention is described in more detail by the following examples, but the present invention does not limit to following examples.
The smoke and dust eliminating method of flue gas described in the present embodiment is 180 DEG C or so of the flue gas come out from shaft furnace from smoke elimination tower 1 top enters, and described smoke elimination tower 1 is sandwich 3, in smoke elimination tower Inner after cooling and dedusting cools, under smoke elimination tower Portion's flue gas discharge opening feeding desulphurization and denitration device, the flue gas after desulphurization and denitration device desulphurization and denitration is entered back on smoke elimination tower Portion is from top flue gas discharge opening.
Flue gas in the entrance smoke elimination tower cools by three-level, i.e., the flue gas after desulphurization and denitration enters smoke elimination tower Top carries out one-level cooling down to flue gas, and the air that air blower is blasted carries out two grades of coolings to the flue gas after one-level cooling down Cooling, refrigerant to after two grades of cooling downs flue gas carry out three-level forced cooling cooling, make flue gas cool-down be cooled to 10 DEG C- 50℃。
As shown in Figure 1 with Figure 2:The present invention realizes that the equipment that the smoke and dust eliminating method of above-mentioned flue gas is used includes eliminating smoke Tower 1, air blower 2, heat-exchange device and tube type dust removing device 4, the periphery of the smoke elimination tower 1 is sandwich 3, is sky after flue gas The passage of gas.Desulphurization and denitration flue gas inlet port 5, air blower connector and top flue gas discharge opening 6 are provided with sandwich, Described tube type dust removing device 4 is pipe precipitator, and it is arranged in smoke elimination tower 1, can be multi-tube dust cleaner, i.e., in smoke elimination tower Inside it is provided with multiple tubulations(As shown in Figure 1)Or single tube deduster, i.e., single tubulation is provided with smoke elimination tower(Such as Shown in Fig. 2), the flue gas into tube type dust removing device 4 is in the presence of cooling and deadweight, and the travel fatigue in flue gas can be deposited to smoke elimination The bottom of tower 1, for the ease of going to remove travel fatigue, the bottom of the smoke elimination tower 1 is conical by its shape, and bottom is provided with dust discharge Mouthful, and the auger 12 for discharging dust is connected with the dust outlet position.The heat-exchange device uses conventional heat Pump technology, the heat-exchange tube 8 of the heat-exchange device is located at the bottom in smoke elimination tower 1, and is wrapped on tube type dust removing device 4, right Flue gas in tube type dust removing device 4 carries out pressure heat exchange, flue gas forced cooling is cooled to 10 DEG C -50 DEG C.The heat-exchange tube 8 Entrance point be connected through choke valve 11 with radiator 10, the low-pressure end of the port of export and heat pump 9 is connected, the high-pressure side of heat pump and radiating Device 10 is connected.Bottom flue gas discharge opening 7 is provided with the bottom of smoke elimination tower.
In use, 180 DEG C or so of the flue gas come out from shaft furnace enters tubular type tube type dust removing device from the top of smoke elimination tower 1 In 8, start air blower 2, cold air is entered by air blower connector in the sandwich 3 of smoke elimination tower 1, to entering smoke elimination tower 1 After flue gas in interior tubular type tube type dust removing device 4 is cooled down;Drive heat pump 9, cooling medium in the presence of heat pump 9, Pressure heat exchange is carried out by heat-exchange tube 8 and tube type dust removing device 4, flue gas forced cooling is cooled to 10 DEG C -50 DEG C.Tubular type Travel fatigue in dust arrester 4 is deposited to the bottom of smoke elimination tower, is discharged by auger 12;Cooled in tube type dust removing device 4 Flue gas sends into desulphurization and denitration device, and the flue gas after desulphurization and denitration device desulphurization and denitration is by desulphurization and denitration flue gas inlet port 5 Into in the sandwich 3 of smoke elimination tower 1, the air entered with air blower 2 is discharged after mixing from top flue gas discharge opening 6.

Claims (8)

1. a kind of smoke and dust eliminating method of white cigarette gas, it is characterised in that:The top of the flue gas come out from shaft furnace from smoke elimination tower is entered Enter to eliminate smoke in tower, in smoke elimination tower Inner by cooling and discharging from flue after dedusting.
2. the smoke and dust eliminating method of white cigarette gas according to claim 1, it is characterised in that:Described smoke elimination tower is interlayer knot Structure.
3. the smoke and dust eliminating method of white cigarette gas according to claim 1, it is characterised in that:It is described smoke elimination tower Inner through supercooling But cooling and dedusting after flue gas, from smoke elimination tower bottom flue gas discharge opening discharge after, entered back into after desulphurization and denitration smoke elimination tower from Flue is discharged.
4. the smoke and dust eliminating method of white cigarette gas according to claim 1, it is characterised in that:Cigarette in the entrance smoke elimination tower Gas cools by three-level, i.e., the flue gas after desulphurization and denitration enters smoke elimination tower top to flue gas progress one-level cooling down, drum The air that blower fan is blasted carries out two grades of cooling downs to the flue gas after one-level cooling down, after refrigerant is to two grades of cooling downs Flue gas carry out three-level forced cooling cooling.
5. a kind of equipment for realizing the smoke and dust eliminating method of white cigarette gas described in claim 1, it is characterised in that:Including smoke elimination tower (1), air blower(2), tube type dust removing device(4)And heat-exchange device, described smoke elimination tower is sandwich structure, is provided with interlayer Desulphurization and denitration flue gas inlet port(5), air blower connector and top flue gas discharge opening(6), the tube type dust removing device is arranged on In smoke elimination tower;The heat-exchange tube of the heat-exchange device(8)In smoke elimination tower, it is intertwined and connected with tube type dust removing device, the heat The entrance point of pipe is exchanged through choke valve(11)With radiator(10)Connection, the port of export and heat pump(9)Low-pressure end connection, heat pump High-pressure side is connected with radiator;The bottom of the smoke elimination tower is provided with bottom flue gas discharge opening(7).
6. the equipment of the smoke and dust eliminating method of white cigarette gas according to claim 5, it is characterised in that:The smoke elimination tower(1) Bottom conical by its shape, bottom are provided with dust outlet, be connected with auger at the dust outlet position(12).
7. the equipment of the smoke and dust eliminating method of white cigarette gas according to claim 5, it is characterised in that:The tube type dust removing dress Put(4)For single tube deduster, i.e., single pipe is provided with smoke elimination tower.
8. the equipment of the smoke and dust eliminating method of white cigarette gas according to claim 5, it is characterised in that:The tube type dust removing dress Put(4)For multi-tube dust cleaner, i.e., multiple tubulations are provided with smoke elimination tower.
CN201710328485.0A 2017-05-11 2017-05-11 The smoke and dust eliminating method and equipment of white cigarette gas Pending CN107029512A (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111380397A (en) * 2018-12-28 2020-07-07 北京亿玮坤节能科技有限公司 Application of plastic hose in white-spot eliminating process and white-spot eliminating tower
CN111380383A (en) * 2018-12-28 2020-07-07 北京亿玮坤节能科技有限公司 Novel white tower disappears

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111380397A (en) * 2018-12-28 2020-07-07 北京亿玮坤节能科技有限公司 Application of plastic hose in white-spot eliminating process and white-spot eliminating tower
CN111380383A (en) * 2018-12-28 2020-07-07 北京亿玮坤节能科技有限公司 Novel white tower disappears

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Application publication date: 20170811