CN106693594A - Waste gas treatment method and system - Google Patents
Waste gas treatment method and system Download PDFInfo
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- CN106693594A CN106693594A CN201611246529.7A CN201611246529A CN106693594A CN 106693594 A CN106693594 A CN 106693594A CN 201611246529 A CN201611246529 A CN 201611246529A CN 106693594 A CN106693594 A CN 106693594A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D51/00—Auxiliary pretreatment of gases or vapours to be cleaned
- B01D51/02—Amassing the particles, e.g. by flocculation
- B01D51/04—Amassing the particles, e.g. by flocculation by seeding, e.g. by adding particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- 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
- B01D53/002—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 by condensation
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Chimneys And Flues (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a waste gas treatment method. According to the method, by creating a water mist area rich in water vapor, waste gas is made to pass through the water mist area to be thoroughly mixed with the water vapor, and then the water vapor is condensed, so that the waste gas is desulfurized, denitrated and dedusted. The invention further discloses a corresponding waste gas treatment system. The system comprises a waste gas fan, a flue gas pipeline, a water vapor generator, a water throw-off plate, a power device and a water spraying device. The method and system can be widely used in various occasions where gas needs to be dedusted and purified, and can also achieve a good treatment effect even on waste gas containing dust which is slightly soluble or insoluble in water.
Description
Technical field
The present invention relates to industrial dedusting, desulphurization and denitration technical field, particularly a kind of waste gas processing method, and its is right
The processing system answered.
Background technology
Many industrial production activities can all cause the generation of dust, sulfur dioxide, nitrogen oxides（Dust herein, bag
Include the tiny floating object such as various solid particles, oil droplet）, particularly ceramic building material manufacturing enterprise, fires its powder mist projection granulating
Etc. link can produce a large amount of dust, sulfur dioxide, nitrogen oxides, so be badly in need of setting dedusting, desulphurization and denitration equipment, with full
Toe ring protects production requirement.
Traditional dedusting means include dry dust removal and wet dust removal, then connect desulfurizer and denitrification apparatus.Dry type is removed
Dirt is to realize removing chalk dust removing, desulphurization and denitration using bag-type dusting, Electrostatic Absorption, calcium hydroxide absorption, plural serial stage method；Wet type
Dedusting is then to use to be passed through dusty gas in the good wash solution of pre-coordination or in spray rinsing solution spraying room, is made with powder
When by wash solution, dust, sulfur dioxide, nitrogen oxides are washed down and side that gas is purified the gas of dirt
Method.
But dust collection method listed above all respectively has defect, or dust removing effects are undesirable, efficiency is low, otherwise it is exactly to throw
Enter that high cost, floor space are excessive, use cost is high, is not suitable for commonly used.Further, there is spy to gas treatment in face of some
Different desired occasion, for example needs to remove some soluble gas or inflammable gas, then existing cleaner is difficult to accomplish.
The content of the invention
The invention provides a kind of waste gas processing method, it can pass through slightly soluble in waste gas or water insoluble pollutant
Physics mode realizes sedimentation.
Present invention also offers a kind of system of correspondence waste gas processing method.
Waste gas processing method is first introduced, it is comprised the following steps：
Step 1）：The water smoke region rich in steam is built, makes waste gas by water smoke region, waste gas is fully blended into height with steam
Wet waste gas, then by waste gas-gas-vapor mix condensation, so that exhuast gas desulfurization/denitration/dedusting.
Further, also including step 2）：The drop that is condensed into of steam is reclaimed, it is settled, filtration treatment, be allowed to weight
Newly become recirculated water again.
And step 3）：Will be by step 2）The recirculated water obtained after treatment carries out heating generation steam and circulation is replenished
Step 1）In described water smoke region.
Wherein, the step 1）In water smoke region be heated by water, it is spread steam and formed, should
The heater meanses at place include that setting independent heating source heats water and/or using the energy heats water in waste gas.
And, step 1）The condensing water vapor is to agitate waste gas by cooling water curtain device, and the cooling water curtain device has
The cooling water curtain of uniform sprinkling, the waste gas-gas-vapor mix is by cooling down water curtain and being condensed into drop.
The waste gas that the technical program is directed to has various：If hot and humid gas, then the requirement rich in steam, phase have been met
When being among being constantly in water smoke region before condensation in it；If high-temperature dry air, then water is entered using the waste heat of waste gas
Row heating, evaporates the water into steam, forms water smoke region；If low temperature/gas at normal temperature is dried, then by steam that additional heat is good
It is passed through water smoke region.
Then, a kind of exhaust treatment system that can realize the waste gas processing method is introduced, including：Exhaust gas fan；Flue gas
Pipeline, it has Upstream section and tract, and the Upstream section is connected with exhaust gas fan, and from Upstream section, downstream section flows waste gas；
Cooling water curtain device, including water-throwing disk and fountain head, the water-throwing disk are in the form of annular discs, wherein a card integrally centripetal depression formation
Cambered surface, the card is fixed in flue as water dumping face, water-throwing disk by support, the water dumping facing Upstream section or under
Trip section direction, the periphery in water dumping face erects to form wall, and the wall is provided with the splitter box of radial direction, and the fountain head is to water dumping
Spray water in face；Power set, it is connected with water-throwing disk and water-throwing disk can be driven to rotate；Steam generating means, it includes that vapor goes out
Mouthful, the steam outlet is located at Upstream section.
Further, the steam generating means also include converting water to steam equipment, and the equipment can be heat exchange
Device, the heat exchanger is arranged in the Upstream section of flue, and the heat energy carried using waste gas is heated to water；Or
Ultrasonic atomization equipment, is passed directly into flue after atomizing water into steam；Or be electric heating chuck or combustion heating
Stove, is heated by other energy resource supplies, water is heated up and is gasificated into steam.
Preferably, the power set are air motor or waterproof machine.
Preferably, the water dumping face of the water-throwing disk, multi-stage stairs are formed from core to wall direction.
Preferably, the shower nozzle faces the immediate vicinity in water dumping face.
Preferably, the exhaust treatment system also includes three-level sink mechanism, and the three-level sink mechanism includes the successively
One expansion chamber, the second expansion chamber and the 3rd expansion chamber, the inwall of the tract are provided with shut-off damper, first expansion chamber with
The tube wall of tract is connected and interface is located at the front of shut-off damper, and second expansion chamber is connected with the end of tract, institute
State the second expansion chamber top and be provided with steam vents, the 3rd expansion chamber is connected with the steam vents of the second expansion chamber, and
3rd expansion chamber top is provided with condensation vapor pipeline.
Preferably, the watering is water circulation mechanism, and the water circulation mechanism is given birth to cooling water curtain device, steam respectively
Connected into device and three-level sink mechanism, including filtering ponds, neutralization pond, and neutralize solution reservoir.
Preferably, multiple water-throwing disks are provided with the flue.
Waste gas processing method disclosed by the invention, it is different from traditional waste gas rich in sulfide, itrated compound and dust
Processing method, without plural serial stage dedusting, desulphurization and denitration device or use membrane filtration, but utilize the steam in water smoke region
To make waste gas fully be mixed with steam, with the dust in waste gas as the nuclei of condensation in condensation process, rapid condensation is into liquid
Drop；Meanwhile, sulfur dioxide, nitrogen oxides are dissolved in water adsorption and sedimentation, reach the purpose of desulphurization and denitration.
Exhaust treatment system disclosed by the invention, can be during water-throwing disk high-speed rotation, by the water on water dumping face
Thrown away from splitter box, so as to form uniform water curtain.Dust and/or water vapour parcel that water curtain can flow script with waste gas
Firmly, larger drop is formed, so that it is settled down on the inwall of flue, and drains from discharge outlet, is sunk into follow-up
Drop, decomposition process.The various occasions for needing to carry out gas udst separation are the method can be widely used in, even with containing micro-
The waste gas of molten or water insoluble dust can also play good treatment effect.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will make needed for embodiment description
Accompanying drawing is briefly described.Obviously, described accompanying drawing is a part of embodiment of the invention, rather than whole implementations
Example, those skilled in the art on the premise of not paying creative work, can also obtain other designs according to these accompanying drawings
Scheme and accompanying drawing.
Fig. 1 is the structural representation of embodiment 2, and wherein arrow represents exhaust gas flow direction.
Specific embodiment
The technique effect of design of the invention, concrete structure and generation is carried out clearly below with reference to embodiment and accompanying drawing
Chu, it is fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright a part of embodiment, rather than whole embodiments, based on embodiments of the invention, those skilled in the art is not paying
The other embodiment obtained on the premise of creative work, belongs to the scope of protection of the invention.In addition, be previously mentioned in text
All connection/annexations, not singly refer to that component directly connects, and refer to that can be added deduct by adding according to specific implementation situation
Lack couple auxiliary to constitute more excellent draw bail.Each technical characteristic in the invention, in not conflicting conflict
Under the premise of can be with combination of interactions.
A kind of waste gas processing method, comprises the following steps：
Step 1）, build the water smoke region rich in steam, make waste gas by water smoke region, waste gas is fully mixed with steam, with
Afterwards by waste gas-gas-vapor mix condensation, so that exhuast gas desulfurization/denitration/dedusting；
Step 2）, reclaim the drop that is condensed into of steam, it is settled, filtration treatment, be allowed to become recirculated water again again；
Step 3）, will be by step 2）The recirculated water obtained after treatment carries out heating generation steam and circulation replenishes step 1）Institute
In the water smoke region stated.
Further, the step 1）In water smoke region be heated by water, it is spread steam and formed,
Heater meanses at this include that setting independent heating source heats water and/or using the energy heats water in waste gas.
Further, step 1）The condensing water vapor is to agitate waste gas by cooling water curtain device, the cooling water curtain device
Cooling water curtain with uniform sprinkling, the waste gas-gas-vapor mix is by cooling down water curtain and being condensed into drop.
Embodiment 1：
A kind of processing system of shape of ceramic spray tower waste gas, including：Exhaust gas fan, it is connected with the chimney of kiln；Fume pipe
Road, it has Upstream section and tract, and the Upstream section is connected with exhaust gas fan, and from Upstream section, downstream section flows waste gas；It is cold
But drenching installation, including water-throwing disk and fountain head, the water-throwing disk are in the form of annular discs, wherein a card integrally it is centripetal depression form arc
Face, the card is fixed in flue as water dumping face, water-throwing disk by support, and the water dumping facings Upstream section or downstream
Duan Fangxiang, the periphery in water dumping face erects to form wall, and the wall is provided with the splitter box of radial direction, and the fountain head is to water dumping face
Water spray；Power set, it is connected with water-throwing disk and water-throwing disk can be driven to rotate；Steam generating means, it includes steam outlet,
The steam outlet is located at Upstream section.Contain a large amount of high-temperature water vapors in the waste gas discharged by spray tower so that waste gas
Gas in the flue of processing system is in the state of water saturation, and when water-throwing disk is rotated, the water curtain that it takes up can make
Water vapour cooling in waste gas, and with the dust in waste gas as the nuclei of condensation, rapid condensation is dropped in flue into drop
Inwall, being then discharged into follow-up water circulation mechanism from discharge outlet carries out the treatment such as desulphurization and denitration.
Embodiment 2：
As shown in figure 1, a kind of kiln discharges the processing system of waste gas, including：Exhaust gas fan, it is connected with the chimney of kiln；Cigarette
Feed channel 1, it has Upstream section 11 and tract 12, and the Upstream section 11 is connected with exhaust gas fan, waste gas from Upstream section 11 to
Tract 12 flows；Cooling water curtain device, including water-throwing disk 2 and fountain head 41, the water-throwing disk 2 is in the form of annular discs, wherein a disk
Integrally centripetal depression forms cambered surface in face, and the card is used as water dumping face, and water-throwing disk 2 is fixed in flue 1 by support, described
Water dumping facings Upstream section 11 or the direction of tract 12, and the periphery in water dumping face erects to form wall, and the wall is provided with radially
Splitter box, the fountain head 41 to water dumping face spray water；Power set 3, it is connected with water-throwing disk 2 and can drive 2 turns of water-throwing disk
It is dynamic；Steam generating means, it includes steam outlet and heat exchanger 5, and the steam outlet is located at Upstream section 11, the heat
Exchanger 5 is arranged in the Upstream section 11 of flue 1；Also include three-level sink mechanism, the three-level sink mechanism is wrapped successively
The first expansion chamber 61, the second expansion chamber 62 and the 3rd expansion chamber 63 are included, the inwall of the tract 12 is provided with shut-off damper 13, institute
State the first expansion chamber 61 be connected with the tube wall of tract 12 and interface be located at shut-off damper 13 front, second expansion chamber 62
End with tract 12 is connected, and the top of the second expansion chamber 62 is provided with steam vents, the 3rd expansion chamber 63 and
The steam vents connection of two expansion chambers 62, and the top of the 3rd expansion chamber 63 is provided with condensation vapor pipeline 64；The watering is
Water circulation mechanism, the water circulation mechanism is connected with cooling water curtain device, steam generating means and three-level sink mechanism respectively,
Including filtering ponds, neutralization pond, and neutralize solution reservoir.What is discharged by kiln is high temperature, dry waste gas, and is wherein contained
There are a large amount of water insoluble dust, so needing that the partial heat energy of waste gas is exchanged to steam generating means using heat exchanger 5
Water supply water pipe in water in so that get rid of and water smoke region formed in the Upstream section 11 of flue 1.When waste gas passes through, water vapour,
Small water droplet etc. is fully mixed with waste gas, and subsequent waste gas-gas-vapor mix is influenceed by cooling water curtain device, and dust therein is
Into drop, the inwall for being dropped in flue 1 is accumulated into waste liquid for nuclei of condensation rapid condensation, waste liquor stream downstream section 12.It is most of
Waste liquid is influenceed by shut-off damper 13, is settled into the first expansion chamber 61, and the globule that part is still flown away with air-flow can be crossed and dammed
Baffle plate 13, into the second expansion chamber 62.Because the space of the second expansion chamber 62 is larger, and its steam vents is located at the second expansion chamber
62 top, most of globule can herein condense into drop and settle.Only the globule of small part small volume can be cross-domain again
Steam vents enter the 3rd expansion chamber 63, but are present such that whole globules are finally condensed due to condensation vapor pipeline 64
In the 3rd expansion chamber 63.The supernatant of waste water can flow into follow-up water circulation mechanism and carry out desulphurization and denitration etc. in each expansion chamber
Reason, is then recycling in cooling water curtain device and steam generating means.
Embodiment 3
A kind of normal temperature synthesizes the processing system of chemical products waste gas, including：Exhaust gas fan, it is connected with the chimney of kiln；Flue gas
Pipeline, it has Upstream section and tract, and the Upstream section is connected with exhaust gas fan, and from Upstream section, downstream section flows waste gas；
Cooling water curtain device, including water-throwing disk and fountain head, the water-throwing disk are in the form of annular discs, wherein a card integrally centripetal depression formation
Cambered surface, the card is fixed in flue as water dumping face, water-throwing disk by support, the water dumping facing Upstream section or under
Trip section direction, the periphery in water dumping face erects to form wall, and the wall is provided with the splitter box of radial direction, and the fountain head is to water dumping
Spray water in face；Power set, it is connected with water-throwing disk and water-throwing disk can be driven to rotate；Steam generating means, it includes that vapor goes out
Mouth is with the steam outlet is located at Upstream section, and the electric heating chuck/combustion heating furnace is arranged at outside flue, steam life
The heating that can first pass through heater into the water in the water supply water pipe of device enters back into flue.It is produced in building-up process
Waste gas is generally in the dry, state of normal temperature, therefore needs to add the heater of extra energy supply during using exhaust treatment system,
To maintain the water in water pipe to remain close to the state of atmospheric boiling point.
Better embodiment of the invention is illustrated above, but the invention is not limited to the implementation
Example, those of ordinary skill in the art can also make a variety of equivalent modifications or replace on the premise of without prejudice to spirit of the invention
Change, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (11)
1. a kind of waste gas processing method, it is characterised in that：Comprise the following steps：
Step 1）, build the water smoke region rich in steam, make waste gas by water smoke region, waste gas is fully blended into height with steam
Wet waste gas, then by waste gas-gas-vapor mix condensation, so that exhuast gas desulfurization/denitration/dedusting.
2. waste gas processing method according to claim 1, it is characterised in that：The step 1）Afterwards, also have：
Step 2）, reclaim the drop that is condensed into of steam, it is settled, filtration treatment, be allowed to become recirculated water again again.
3. waste gas processing method according to claim 2, it is characterised in that：The step 2）Afterwards, also have：
Step 3）, will be by step 2）The recirculated water obtained after treatment carries out heating generation steam and circulation replenishes step 1）Institute
In the water smoke region stated.
4. waste gas processing method according to claim 1, it is characterised in that：The step 1）In water smoke region be to pass through
Water is heated, it is spread steam and is formed, the heater meanses at this include setting independent heating source heating water and/
Or using the energy heats water in waste gas.
5. waste gas processing method according to claim 1, it is characterised in that：Step 1）The condensing water vapor is to agitate waste gas
By cooling water curtain device, the cooling water curtain device has the cooling water curtain of uniform sprinkling, and the waste gas-gas-vapor mix is led to
Supercooling water curtain is simultaneously condensed into drop.
6. a kind of exhaust treatment system, it is characterised in that including：
Exhaust gas fan；
Flue（1）, it has Upstream section（11）And tract（12）, the Upstream section（11）Connected with exhaust gas fan, given up
Gas is from Upstream section（11）Downstream section（12）Flowing；
Cooling water curtain device, including water-throwing disk（2）And fountain head（41）, the water-throwing disk（2）It is in the form of annular discs, wherein a card is whole
The centripetal depression of body forms cambered surface, and the card is used as water dumping face, water-throwing disk（2）Flue is fixed on by support（1）It is interior, it is described
Water dumping facings Upstream section（11）Or tract（12）Direction, the periphery in water dumping face erects to form wall, and the wall is provided with
The splitter box of radial direction, the fountain head（41）Water dumping face is sprayed water；
Power set（3）, itself and water-throwing disk（2）Connect and water-throwing disk can be driven（2）Rotate；
Steam generating means, it includes steam outlet, and the steam outlet is located at Upstream section（11）.
7. exhaust treatment system according to claim 6, it is characterised in that：The steam generating means also include heat exchange
Device（5）, the heat exchanger（5）It is arranged at flue（1）Upstream section（11）It is interior.
8. exhaust treatment system according to claim 6, it is characterised in that：The steam generating means also include electrothermal clip
Set or combustion heating furnace.
9. the exhaust treatment system according to any one of claim 6~8, it is characterised in that：The power set（3）It is gas
Dynamic motor or waterproof machine.
10. the exhaust treatment system according to any one of claim 6~8, it is characterised in that：Also include three-level putting-down machine
Structure, the three-level sink mechanism includes the first expansion chamber successively（61）, the second expansion chamber（62）With the 3rd expansion chamber（63）, it is described
Tract（12）Inwall be provided with shut-off damper（13）, first expansion chamber（61）With tract（12）Tube wall connection and connect
Mouth is located at shut-off damper（13）Front, second expansion chamber（62）With tract（12）End connection, described second sink
Drop room（62）Top is provided with steam vents, the 3rd expansion chamber（63）With the second expansion chamber（62）Steam vents connect
It is logical, and the 3rd expansion chamber（63）Top is provided with condensation vapor pipeline（64）.
11. exhaust treatment systems according to claim 10, it is characterised in that：The watering is water circulation mechanism, institute
Water circulation mechanism is stated to be connected with cooling water curtain device, steam generating means and three-level sink mechanism respectively, including filtering ponds, in
And pond, and neutralize solution reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611246529.7A CN106693594A (en) | 2016-12-29 | 2016-12-29 | Waste gas treatment method and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611246529.7A CN106693594A (en) | 2016-12-29 | 2016-12-29 | Waste gas treatment method and system |
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| CN201611246529.7A Pending CN106693594A (en) | 2016-12-29 | 2016-12-29 | Waste gas treatment method and system |
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| CN108187420A (en) * | 2017-12-25 | 2018-06-22 | 姚森 | Industrial dust circulated filter system |
| CN108548239A (en) * | 2018-06-13 | 2018-09-18 | 安徽省利特环保技术有限公司 | A kind of spray purification device killed bacterium and reduce PM2.5 |
| CN109821327A (en) * | 2019-01-25 | 2019-05-31 | 江苏师范大学 | Environment-friendly type gas dust-removing device |
| CN109847937A (en) * | 2019-03-04 | 2019-06-07 | 佛山华碳环境科技有限公司 | A kind of electric precipitation defogging method |
| CN110511040A (en) * | 2019-09-27 | 2019-11-29 | 梁凤鸣 | A kind of environment-friendly type haydite and preparation method thereof |
| CN110960954A (en) * | 2019-12-25 | 2020-04-07 | 谢金林 | Based on compound exhaust-gas treatment equipment |
| CN112337305A (en) * | 2020-11-25 | 2021-02-09 | 杨勇 | Low-consumption carbon-based catalytic desulfurization and denitrification device for flue gas purification |
| CN115591388A (en) * | 2022-10-07 | 2023-01-13 | 南通图海机械有限公司（Cn） | Waste gas purification device of waste gas incinerator |
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