CN207694528U - Industrial tail gas flue dust and formaldehyde comprehensive treatment system - Google Patents
Industrial tail gas flue dust and formaldehyde comprehensive treatment system Download PDFInfo
- Publication number
- CN207694528U CN207694528U CN201721752568.4U CN201721752568U CN207694528U CN 207694528 U CN207694528 U CN 207694528U CN 201721752568 U CN201721752568 U CN 201721752568U CN 207694528 U CN207694528 U CN 207694528U
- Authority
- CN
- China
- Prior art keywords
- tail gas
- industrial tail
- quencher
- flue dust
- formaldehyde
- 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.)
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 239000003500 flue dust Substances 0.000 title claims abstract description 27
- 239000000428 dust Substances 0.000 claims abstract description 30
- 239000012717 electrostatic precipitator Substances 0.000 claims abstract description 20
- 239000000779 smoke Substances 0.000 claims abstract description 19
- -1 heater Substances 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 56
- 239000007788 liquid Substances 0.000 claims description 20
- 239000010865 sewage Substances 0.000 claims description 18
- 230000008676 import Effects 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 12
- 238000009428 plumbing Methods 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 94
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- 239000007921 spray Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000001179 sorption measurement Methods 0.000 description 6
- 238000000926 separation method Methods 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000012716 precipitator Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 206010047700 Vomiting Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000008673 vomiting Effects 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model is related to a kind of industrial tail gas flue dust and formaldehyde comprehensive treatment systems, the system includes the cyclone dust collectors being sequentially connected in series, quencher, washer, electrostatic precipitator, heater, smoke exhaust fan and chimney, this system is using cyclone dust collectors, the work in tandem of quencher, washer, electrostatic precipitator and heater, the flue dust and formaldehyde in industrial tail gas can be removed to greatest extent, while removing white haze phenomenon.The technological operation management of this system is convenient simultaneously, and investment operating cost is low, will not be had an impact to existing production technology, has fabulous application prospect in being administered containing the industrial tail gas of flue dust and formaldehyde.
Description
Technical field
The utility model belongs to industrial tail gas and administers field more particularly to a kind of industrial tail gas flue dust and formaldehyde comprehensive treatment
System.
Background technology
In industrial production, especially in density board production technology, volume of smoke and formaldehyde are contained in the industrial tail gas of discharge.
Flue dust can cause serious atmosphere pollution, and human body sucking can give rise to diseases, flue dust be suspended in the air can reduce air can
Degree of opinion promotes smog to be formed；Concentration of formaldehyde reaches 0.1mg/m3It can cause human body sense of discomfort, reach 0.5mg/m3It can cause to shed tears,
Reach 0.6mg/m3It can cause throat discomfort, when concentration higher can cause vomiting or even causing death；The industrial tail of discharge simultaneously
Contain a large amount of water vapours in gas, winter will produce white haze phenomenon, cause visual pollution.Therefore industrial tail gas need before discharging into
Row is administered, and most of density board manufacturing enterprise administers industrial tail gas using cyclone dust removal method.
Cyclone dust removal method is physics process of cleaning, i.e., industrial tail gas is sent into cyclone dust collectors, air-flow is made to rotate,
Flue dust is detached to from air-flow by means of centrifugal force and is trapped in wall, then so that flue dust is fallen into ash bucket by gravity, to
Realize the improvement of industrial tail gas.
Such industrial tail gas Processing tecchnics have following three drawbacks：
（1）Universal dust removal efficiency in cyclone cleaner is between 70%-85%, by taking density board production technology as an example, industrial tail
For gas after cyclone dust collectors dedusting, particle content is about 80-100mg/m3, it is unable to reach《Petro chemical industry pollutant
Discharge standard》Prescribed limits 20mg/m3, therefore environment can be caused seriously to pollute.
（2）Cyclone dust collectors do not remove the function of formaldehyde, therefore industrial tail gas is after cyclone dust collectors dedusting, formaldehyde
Content does not change, and is unable to reach《Petro chemical industry pollutant emission standard》Prescribed limits 5mg/m3, human body can be caused
It seriously endangers.
（3）Cyclone dust collectors do not remove the function of water vapour, therefore industrial tail gas is after cyclone dust collectors dedusting, still
So contain a large amount of water vapours, winter will produce white haze phenomenon, cause visual pollution.
Application No. is the utility model new patents of CN201520348621 to provide a kind of exhaust gas of density board processing factory
Collection and purification device drenches deduster by the gravitational precipitator, the water that are sequentially connected in series and tail gas absorption tank controls industrial tail gas
Reason.This technique can reach flue dust in removal industrial tail gas by level-one gravitational dust collection, two level spray and three-level activated carbon adsorption
With the effect of formaldehyde, but between the efficiency of dust collection of gravitational precipitator only has 40%-60%, the load of follow-up cleaner is caused to increase
Greatly；Industrial tail gas is directly entered water leaching deduster after gravitational precipitator primary dust removing, without cooling, results in the need for big
Amount shower water comes into full contact with tail gas just can make tail gas reach saturation, play the role of spray, while the load of feeding spraying pump also can
It is corresponding to increase；Wire mesh demister in water leaching deduster can only partly remove the water vapour in industrial tail gas, be mingled with water vapour
Tail gas enter tourie, the adsorption effect of activated carbon can be influenced, while the structure of wire mesh demister is fine and close silk screen, moisture
Under the conditions of resistance between 500-1000Pa, system operation for a period of time after, wire mesh demister can block, and lead to the negative of air-introduced machine
Lotus increases；Activated carbon adsorption layer can adsorb the water vapour in industrial tail gas while formaldehyde adsorption, therefore adsorption effect is significantly
It reduces, while the desorption of activated carbon and replacement need manual maintenance；Industrial tail gas is directly discharged to chimney by this technique, due to
Tail gas is still saturation state, and containing a large amount of water vapours, therefore winter will produce white haze phenomenon, cause visual pollution.
Utility model content
The purpose of the utility model is to overcome the problems of the above-mentioned prior art, provide a kind of industrial tail gas flue dust and
Formaldehyde comprehensive treatment system.
The technical scheme adopted by the utility model is that：
A kind of industrial tail gas flue dust and formaldehyde comprehensive treatment system comprising the cyclone dust collectors that are sequentially connected in series, quencher,
Washer, electrostatic precipitator, heater, smoke exhaust fan and chimney, the import connection industrial tail gas outlet of the cyclone dust collectors, rotation
The gas feed of the gas vent of wind deduster and quencher connects, the gas vent of the quencher and the gas of washer into
The liquid-inlet a of mouth connection, quencher is connected by water circulating pump and drainage tank outlet, and drainage tank import and circulating water pool connect
It connects, the liquid-inlet b of quencher is connect by feeding spraying pump with sewage disposal system, the liquid outlet of quencher and heater
Liquid-inlet connects, and the gas feed of the gas vent of the washer and electrostatic precipitator connects, the liquid-inlet of washer and
Liquid outlet is connect by feeding spraying pump and plumbing drain with sewage disposal system respectively, the gas vent of the electrostatic precipitator with
The gas feed of heater connects, and the liquid outlet of electrostatic precipitator is connect by plumbing drain with sewage disposal system, described to add
The gas vent of hot device is connect with smoke exhaust fan import, and the smoke exhaust fan outlet is connect with the chimney import, the heating
The liquid outlet of device is connected to the circulating water pool.
Further, it is provided with differential pressure transmitter before the import of the cyclone dust collectors.
Further, the smoke exhaust fan and the chain frequency control of differential pressure transmitter, before ensureing that tail gas enters system
Pressure head is zero.
Further, the washer internal structure is Venturi tube structure.
Further, the quencher and the heater are solution-air plate heat exchanger.
The utility model has the beneficial effects that：
（1）This system, can be with using cyclone dust collectors, the work in tandem of quencher, washer, electrostatic precipitator and heater
The flue dust and formaldehyde in industrial tail gas are removed to greatest extent, make smoke content in industrial tail gas<20mg/m3, content of formaldehyde<5mg/
m3, reach《Petro chemical industry pollutant emission standard》Prescribed limits.
（2）Industrial tail gas passes through quencher, and temperature is reduced to dew-point temperature hereinafter, rear end washer spray can be reduced effectively
The dosage of water；Sewage after spray recycles after entering sewage disposal system processing into washer；It is reached by above 2 points
To using water wisely, the purpose of reduction feeding spraying pump energy consumption.
（3）Electrostatic precipitator is to purify the gas-liquid separation wet method equipment of fluid resistance minimum, and demisting efficiency is high, performance is steady
Fixed, cleaning conveniently, for conventional screen demister resistance is big, efficiency is low, needs dismounting cleans, is more suitable for this system.
（4）Industrial tail gas passes through the higher cyclone dust collectors of the heavier inertia force precipitator of efficiency of dust collection and internal structure design is
The high-effective dust-removing of Venturi tube structure removes formaldehyde washer, you can reaches emission request, saves rear end activated carbon adsorption device
Cost, while saving manual maintenance cost.
（5）Industrial tail gas improves exhaust temperature, most by the water vapour in electrostatic precipitator removal tail gas using heater
White haze phenomenon can be effectively removed by above step to air by smoke exhaust fan and smoke stack emission afterwards.
（6）The technological operation management of this system is convenient, and investment operating cost is low, and pressure head is zero before tail gas enters system, because
This will not have an impact existing production technology, have fabulous application prospect in being administered containing the industrial tail gas of flue dust and formaldehyde.
The additional aspect and advantage of the utility model will be set forth in part in the description, partly will be from following description
In become apparent, or recognized by the practice of the utility model.
Description of the drawings
Fig. 1 is the flow chart of the utility model.
In figure：1, industrial tail gas；2, cyclone dust collectors；3, lime-ash；4, quencher；5, washer；6, electrostatic precipitator；7, add
Hot device；8, smoke exhaust fan；9, chimney；10 gases up to standard；11, circulating water pool；12, drainage tank；13, water circulating pump；14, liquid into
Mouth a；15, plumbing drain；16, sewage disposal system；17, feeding spraying pump；18, spray pipeline；19, washing pipeline；20, liquid into
Mouth b.
Specific implementation mode
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
Embodiment one.
A kind of industrial tail gas flue dust and formaldehyde comprehensive treatment system, including cyclone dust collectors 2,2 gas of cyclone dust collectors go out
Mouth is connect with 4 gas feed of quencher, and 4 gas vent of quencher is connect with 5 gas feed of washer, 5 gas vent of washer
It is connect with 6 gas feed of electrostatic precipitator, 6 gas vent of electrostatic precipitator is connect with 7 gas feed of heater, and 7 gas of heater goes out
Mouth is connect with 8 import of smoke exhaust fan, and the outlet of smoke exhaust fan 8 is connect with 9 import of chimney, and 13 import of water circulating pump goes out with drainage tank 12
Mouth connection, 12 import of drainage tank are connect with circulating water pool 11, and the outlet of water circulating pump 13 is connect with 4 liquid-inlet a14 of quencher, anxious
4 liquid outlet of cooler is connect with 7 liquid-inlet of heater, and 7 liquid outlet of heater is connect with circulating water pool 11, feeding spraying pump 17
Import is connect with sewage disposal system 16, and the outlet of feeding spraying pump 17 passes through spray pipeline 18 and washing pipeline 19 and washer respectively
5 liquid-inlets are connected with 4 liquid-inlet b20 of quencher, and 5 liquid outlet of washer, 6 liquid outlet of electrostatic precipitator pass through sewage pipe
Road 15 is connect with sewage disposal system 16.
Embodiment two.
A kind of industrial tail gas flue dust and formaldehyde comprehensive management of technology, step are：120 DEG C of industrial tail gas is sent to whirlwind
Deduster 2 carries out primary dust removing, and the lime-ash 3 after dedusting is collected processing；Industrial tail gas enters chilling after going out cyclone dust collectors 2
Device 4, water circulating pump 13 send 30 DEG C of low-temperature circulating water to quencher, industrial tail gas while industrial tail gas enters quencher 4
It exchanging heat with low-temperature circulating water, relative humidity is that the industrial tail gas dew-point temperature that 20% i.e. water capacity is 160g/kg is 60 DEG C,
Industrial tail gas temperature after heat exchange be reduced to 60 DEG C hereinafter, the condensed water that industrial tail gas generates can partly remove cigarette in tail gas
Dirt and formaldehyde, while industrial tail gas reaches saturation, can effectively reduce the dosage of rear end washer shower water, low-temperature circulating water is passed through
Temperature is promoted to 95 DEG C after heat exchange, becomes high temperature circulation water, into rear heater 7；Industrial tail gas, which goes out to enter after quencher 4, to be washed
Device 5 is washed, clear water is pressurized to 0.2MPa by feeding spraying pump 17 while industrial tail gas enters washer 5, by around washer 5 one
Week nozzle after be atomized completely, into washer inside sprayed, industrial tail gas enters after washer by washer text mound
In at structure gas velocity can sharply increase to 30-50m/s, come into full contact with the clear water being atomized completely, further remove industrial tail gas
In flue dust and formaldehyde；Sewage after spray enters sewage disposal system 16 by plumbing drain 15, and treated, and clear water enters
Feeding spraying pump 17 recycles；Industrial tail gas enters the progress gas-liquid separation of electrostatic precipitator 6 after going out washer 5, removes industrial tail gas
In water vapour, liquid after separation passes through plumbing drain 15 and enters sewage disposal system 16；After industrial tail gas goes out electrostatic precipitator 6
Into heater 7, the high temperature circulation water with 95 DEG C exchanges heat, and industrial tail gas temperature after heat exchange is promoted to 80 DEG C, can have
Effect removal white haze phenomenon；High temperature circulation water becomes low-temperature circulating water after heat exchange, and into circulating water pool 11, temperature is reduced to 30
DEG C, it is recycled into quencher 4 by drainage tank 12 and water circulating pump 13；Industrial tail gas passes through Smoke after going out heater 7
Machine 8 is sent to chimney 9；Industrial tail gas is emitted into air by chimney 9.It is conveyed by washing pipeline 19 after system stalls
Clear water cleans quencher 4, prevents quencher from influencing heat exchange because flue dust blocks.
The operation principle of the utility model is：Industrial tail gas enters cyclone dust collectors and carries out primary dust removing, the ash after dedusting
Slag is collected processing.Industrial tail gas enters quencher and exchanges heat with low-temperature circulating water, ensures industrial tail gas after heat exchange
Temperature is reduced to dew-point temperature hereinafter, the condensed water that industrial tail gas generates can partly remove flue dust and formaldehyde in tail gas, simultaneously
Industrial tail gas reaches saturation, can effectively reduce the dosage of rear end washer shower water.Industrial tail gas enters washer and is sprayed
Cleaning, industrial tail gas can sharply increase by gas velocity at washer Venturi tube structure to 30-50m/s after entering washer, and complete
The clear water being atomized entirely comes into full contact with, and further removes flue dust and formaldehyde in industrial tail gas.Industrial tail gas enter electrostatic precipitator into
Row gas-liquid separation, removes the water vapour in industrial tail gas, and the liquid after separation enters sewage disposal system.Industrial tail gas, which enters, to be added
Hot device exchanges heat with high temperature circulation water, and industrial tail gas temperature after heat exchange increases, and can effectively remove white haze phenomenon.Industrial tail gas is logical
Smoke exhaust fan is crossed to send to smoke stack emission to air.Recirculated water is recycled by circulating water pool, drainage tank and water circulating pump.
Spray clear water is pressurized to 0.2MPa by feeding spraying pump, is atomized completely after around one week nozzle of washer, into washing
It is sprayed inside device, the sewage after spray enters sewage disposal system by plumbing drain, and treated, and clear water enters spray
Water pump recycles.The clear water conveyed by washing pipeline when the system stalls after cleans quencher, prevent quencher because
Flue dust, which blocks, influences heat exchange.
The basic principles and main features and advantage of the utility model have been shown and described above.The ordinary skill of this field
Personnel are not it should be appreciated that above-described embodiment limits the scope of protection of the utility model, all use equivalent replacements etc. in any form
The technical solution that mode is obtained, falls in the scope of protection of the utility model.
The parts not involved in the utility model is the same as those in the prior art or can be realized by using the prior art.
Claims (5)
1. a kind of industrial tail gas flue dust and formaldehyde comprehensive treatment system, it is characterised in that including be sequentially connected in series cyclone dust collectors,
The import of quencher, washer, electrostatic precipitator, heater, smoke exhaust fan and chimney, the cyclone dust collectors connects industrial tail gas
The gas feed of outlet, the gas vent and quencher of cyclone dust collectors connects, the gas vent and washer of the quencher
Gas feed connection, the liquid-inlet a of quencher connected by water circulating pump and drainage tank outlet, drainage tank import and cycle
Pond connects, and the liquid-inlet b of quencher connect by feeding spraying pump with sewage disposal system, the liquid outlet of quencher and adds
The liquid-inlet of hot device connects, and the gas feed of the gas vent and electrostatic precipitator of the washer connects, the liquid of washer
Import and liquid outlet are connect by feeding spraying pump and plumbing drain with sewage disposal system respectively, the gas of the electrostatic precipitator
Outlet is connect with the gas feed of heater, and the liquid outlet of electrostatic precipitator is connect by plumbing drain with sewage disposal system,
The gas vent of the heater is connect with smoke exhaust fan import, and the smoke exhaust fan outlet is connect with the chimney import, institute
The liquid outlet for stating heater is connected to the circulating water pool.
2. a kind of industrial tail gas flue dust according to claim 1 and formaldehyde comprehensive treatment system, it is characterised in that the rotation
It is provided with differential pressure transmitter before the import of wind deduster.
3. a kind of industrial tail gas flue dust according to claim 1 or 2 and formaldehyde comprehensive treatment system, it is characterised in that described
Smoke exhaust fan and the chain frequency control of differential pressure transmitter, for ensureing that pressure head is zero before tail gas enters system.
4. a kind of industrial tail gas flue dust according to claim 1 and formaldehyde comprehensive treatment system, it is characterised in that described to wash
It is Venturi tube structure to wash device internal structure.
5. a kind of industrial tail gas flue dust according to claim 1 and formaldehyde comprehensive treatment system, it is characterised in that the urgency
Cooler and the heater are solution-air plate heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721752568.4U CN207694528U (en) | 2017-12-15 | 2017-12-15 | Industrial tail gas flue dust and formaldehyde comprehensive treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721752568.4U CN207694528U (en) | 2017-12-15 | 2017-12-15 | Industrial tail gas flue dust and formaldehyde comprehensive treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207694528U true CN207694528U (en) | 2018-08-07 |
Family
ID=63026579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721752568.4U Expired - Fee Related CN207694528U (en) | 2017-12-15 | 2017-12-15 | Industrial tail gas flue dust and formaldehyde comprehensive treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207694528U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107875794A (en) * | 2017-12-15 | 2018-04-06 | 南京宜热纵联节能科技溧阳有限公司 | Industrial tail gas flue dust and formaldehyde comprehensive treatment system and technique |
| CN112843989A (en) * | 2021-03-05 | 2021-05-28 | 江苏省环境工程技术有限公司 | Low-concentration formaldehyde waste gas recovery and disposal device and process |
-
2017
- 2017-12-15 CN CN201721752568.4U patent/CN207694528U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107875794A (en) * | 2017-12-15 | 2018-04-06 | 南京宜热纵联节能科技溧阳有限公司 | Industrial tail gas flue dust and formaldehyde comprehensive treatment system and technique |
| CN112843989A (en) * | 2021-03-05 | 2021-05-28 | 江苏省环境工程技术有限公司 | Low-concentration formaldehyde waste gas recovery and disposal device and process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220120 Address after: 213300 room 8816, No. 1, Wuxing Avenue, Nandu Town, Liyang City, Changzhou City, Jiangsu Province Patentee after: Nanjing yire vertical environmental protection technology Liyang Co.,Ltd. Address before: 213300 No. 55, Hongchang Road, Zhongguancun Science and Technology Industrial Park, Liyang City, Changzhou City, Jiangsu Province Patentee before: NANJING YIRE ZONGLIAN ENERGY SAVING TECHNOLOGY LIYANG CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180807 |
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| CF01 | Termination of patent right due to non-payment of annual fee |