CN206911048U - A kind of PB dries tail gas wet method treatment system - Google Patents
A kind of PB dries tail gas wet method treatment system Download PDFInfo
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- CN206911048U CN206911048U CN201720751094.5U CN201720751094U CN206911048U CN 206911048 U CN206911048 U CN 206911048U CN 201720751094 U CN201720751094 U CN 201720751094U CN 206911048 U CN206911048 U CN 206911048U
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- 239000007921 spray Substances 0.000 claims abstract description 149
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 128
- 238000001816 cooling Methods 0.000 claims abstract description 74
- 239000000428 dust Substances 0.000 claims abstract description 57
- 239000002893 slag Substances 0.000 claims abstract description 51
- 238000007790 scraping Methods 0.000 claims abstract description 47
- 238000005187 foaming Methods 0.000 claims abstract description 22
- 239000006260 foam Substances 0.000 claims description 23
- 238000000746 purification Methods 0.000 claims description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 13
- 238000004332 deodorization Methods 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- 239000003595 mist Substances 0.000 claims description 6
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 230000001174 ascending Effects 0.000 claims description 4
- 239000010802 sludge Substances 0.000 claims description 4
- 238000000889 atomisation Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 14
- 239000009270 zilongjin Substances 0.000 abstract description 6
- 238000007599 discharging Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 93
- 238000000034 method Methods 0.000 description 23
- 238000004140 cleaning Methods 0.000 description 16
- 230000000875 corresponding Effects 0.000 description 16
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 10
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Chemical compound O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000003546 flue gas Substances 0.000 description 8
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 239000008187 granular material Substances 0.000 description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000006213 oxygenation reaction Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 230000000903 blocking Effects 0.000 description 2
- 230000005591 charge neutralization Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 230000001264 neutralization Effects 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 241000132179 Eurotium medium Species 0.000 description 1
- 241001365789 Oenanthe crocata Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052813 nitrogen oxide Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000000630 rising Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- 230000035943 smell Effects 0.000 description 1
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Abstract
A kind of PB dries tail gas wet method treatment system, including the spray-chilling pipeline being sequentially connected with, the cyclone separator that drips, air-introduced machine and exhaust chimney；Spray-chilling pipeline side wall is provided with first order atomizing spray head；Below first order spray head, provided with foaming shower nozzle；The cyclone separator that drips is in hollow cylindrical, and its bottom crust block area is connected with automatic scraping slag filter；The inlet and outlet pipeline of cyclone separator of dripping tangentially connects on drip cyclone separator bottom, top with cyclone separator internal chamber of dripping respectively；Air-introduced machine aspirates tail gas from spray-chilling pipeline towards exhaust chimney direction, and the top of air-introduced machine chamber sets second level spray head, and bottom crust block area is connected with automatic scraping slag filter；Exhaust chimney includes the crust block area sequentially arranged from bottom to up, actively except dust devil area, the cooling of active whirlwind, Bu Feng areas；The system dedusting, good separating effect；Water body can recycle, and substantially mitigate " Bai Long " phenomenon when discharging.
Description
Technical field
The utility model is related to wood-based plate manufacture vent gas treatment field, more particularly to a kind of particieboard (PB) dry tail gas it is wet
Processing system.
Background technology
Present artificial board product line substantially belongs to self-discharging to exhaust emissions, and tail gas composition is not controlled.Although
Also there is the tail gas baffle-box for continuous press, but baffle-box mainly passes through bottom baffles, reduces wind speed, deposits dust.
Although this baffle-box can deposit the dust of some larger particles, the especially substantial amounts of minute dusts of most dust
Particle contains somebody still with exhaust emissions, and baffle-box can not be handled other materials in tail gas especially in tail gas
The formaldehyde and foul smell of the higher concentration given off in plate production process are made, can not be handled completely.And artificial board product line except
The flue gas of continuous press needs to handle outer, also has some other tail gas, such as the tail gas that the drying whirlwind of fiber drying pipe is discharged, with
And the tail gas of the discharge such as glue department, formaldehyde workshop.Therefore the exhaust emissions of present artificial board product line still has dust-laden
Amount is high, and temperature is high, the high situation of content of formaldehyde, has destruction to environment, is unfavorable for environmental protection.
This department granted patent《A kind of tail gas biochemical processing method and system》201410265262.0 disclose a kind of tail
Gas disposal method and production system, can greatly solve present in MDF in industry (i.e. medium density fibre board (MDF)) exhaust emissions
Problem, but be not particularly suited for the vent gas treatment of particieboard because PB lines be it is first dry after be glued, and fiberboard MDF is
First it is glued and dries afterwards, so PB and MDF production tail gas has larger difference, is mainly shown as：
1st, dust moisture content is lower in PB tail gas (being less than 3%), and MDF dust moisture content is generally higher than 7%；
2nd, PB production lines are dried in tail gas and only have formaldehyde (being less than 0.05mg/Nm3) by oneself with minimal amount of timber, and MDF's is dry
General all (0.5~25mg/Nm3) containing free formaldehyde in dry tail gas, except it is nonproductive be formaldehydeless addition sheet material；
3rd, it is very big (54~650,000 cubic meters/hour) to dry tail gas amount by MDF, PB dry tail gas it is smaller (10~220,000 cubes/
Hour).
Lack the technique and processing system being effectively treated to PB tail gas in industry at present.
Utility model content
Technical problem to be solved in the utility model is that providing a kind of PB dries tail gas wet treatment process and processing system
System, the modified technique and processing system can efficiently separate particulate matter, dust and other impurity in tail gas, and in time by particle
The body refuse formed after thing and dust absorbing moisture content is collected with water body, separated, and is maintained water body more clean, is recycled water body, carry
The stable operation of high whole system is horizontal, reduces maintenance workload.
The utility model is achieved through the following technical solutions：
A kind of PB dries tail gas wet method treatment system, it is characterised in that：Including be sequentially connected with spray-chilling pipeline, drop
Water cyclone separator, air-introduced machine and exhaust chimney；
Spray-chilling pipeline side wall is provided with first order atomizing spray head；Below first order spray head, provided with hair
Steep shower nozzle；
The cyclone separator that drips is in hollow cylindrical, and its bottom crust block area is connected with automatic scraping slag filter；Drip whirlwind
The inlet and outlet pipeline of separator respectively drip cyclone separator bottom, top tangentially with the cyclone separator that drips inside
Chamber；
Air-introduced machine aspirates tail gas from spray-chilling pipeline towards exhaust chimney direction, and the top of air-introduced machine chamber is set
Second level spray head, bottom crust block area are connected with automatic scraping slag filter；
Exhaust chimney includes the crust block area sequentially arranged from bottom to up, actively except dust devil area, the cooling of active whirlwind, benefit wind
Area, wherein：
Crust block area is connected with automatic scraping slag filter；
The export pipeline of air-introduced machine tangentially accesses along exhaust chimney and actively removes dust devil area, actively except dust devil area top is set
There is third level spray head；
The cooling of active whirlwind, Bu Feng areas side wall are provided with axial flow blower, and the air draft direction of axial flow blower is along exhaust chimney side
Wall beveling is upward, can form cyclone type ascending air；
The water purification outlet of automatic scraping slag filter is connected with cooling tower import；
Sprayed by first order spray pipeline, the second level water purification outlet and/or the cooling tower outlet of automatic scraping slag filter
Shower pipe road and third level spray pipeline connect first order spray head, second level spray head and third level spray head respectively；
Water purification outlet and/or the cooling tower outlet of automatic scraping slag filter pass through the pipeline connection foaming shower nozzle that foams；Hair
Bubble pipeline is provided with expanding foam solution blend tank；
The sensor set in spray-chilling pipeline output end controls axial flow blower, adjustment axis stream by control system
The air quantity and blast of blower fan.
Wherein, spray-chilling pipeline and its first order atomizing spray head of internal configuration, foaming shower nozzle corresponding first
Region high speed and high pressure spray-chilling area and second area medium temperature flue gas foam dust-removing area；Drip cyclone separator and actively remove
Dust devil area drip in corresponding 3rd region whirlwind, actively remove dust devil and cool down Jing Chen areas；The cooling of active whirlwind, Bu Feng areas corresponding the
The cooling of four region active whirlwind, mend wind region；(automatic scraping slag filter can use me to take charge of granted patent to automatic scraping slag filter
201510415129.3 technologies and its improvement project or similar other slag remover technologies) correspond to the 5th region slagging-off Water warfare
Treatment region；The corresponding 6th regional water circulating cooling area of cooling tower.
Further, the venturi reducing dedusting spray with one or more snippets series connection on the spray-chilling pipeline
Pipeline, along tail gas direct of travel, venturi reducing dedusting spray piping caliber is gradually reduced；The dedusting of multistage venturi reducing sprays
Connected between pipeline by isometrical spray piping；First order atomizing spray head is included along the multiple of tail gas direct of travel interval configuration
Atomizing spray head, the spray water pressure of multiple atomizing spray head is identical, and the foaming shower nozzle is included along tail gas direct of travel interval
The multiple foaming shower nozzle of configuration, every 1~3 atomizing spray head downstream are correspondingly arranged 1~2 foaming shower nozzle, and foaming shower nozzle is set
Become general goal in spray-chilling pipeline caliber.
Further, the spray-chilling pipeline entrance configuration conical cowl, the big small end direction of conical cowl
It is consistent with the airintake direction of spray-chilling pipeline, and communicated with air, conical cowl small end is tightly placed in spray-chilling
On pipeline, wind-supplying mouth is opened up in the spray-chilling pipeline side wall in small end, wind suction is mended for carrying out negative pressure to tail gas.
Further, crust block area bottom is connected by sludge pump with automatic scraping slag filter, and sludge pump is at interval of setting
Section of fixing time operates setting time value.
Further, the active whirlwind cooling, Bu Feng areas top set fourth stage spray head and/or level V spray
Head；Water purification outlet and/or cooling tower 9 outlet of cooling tower pass through fourth stage spray pipeline and/or level V spray pipeline point
Lian Jie not fourth stage spray head and/or level V spray head；Also, fourth stage spray pipeline is provided with alkali lye preparation tank, the 5th
Level spray head is located above fourth stage spray head, for carrying out clean water cascade spray and the spray of alkaline water spray atomizing to tail gas
Leaching.
Further, duct type ionization dedusting, deodorization area are additionally provided with the exhaust chimney, duct type ionization dedusting, is removed
The 6th grade of spray head is provided with the top of smelly area, water purification outlet and/or the cooling tower outlet of automatic scraping slag filter pass through the 6th grade
Spray pipeline connects the 6th grade of spray head, for carrying out duct type ionization dedusting, deodorization to tail gas.
The beneficial effects of the utility model are：
1st, high speed and high pressure spray-chilling area can make tail gas tail gas is cooled fast in certain temperature range, simultaneously
Reduce the exhaust gas volumes of discharge, slow down tail gas wind speed and blast, dedusting good separating effect；
2nd, medium temperature flue gas foam dust-removing area fully adheres to the dust in tail gas using foam, improves dust removing effects；
3rd, drip whirlwind, actively remove dust devil cooling Jing Chen areas and can implement 80~95% aqueous vapor separation；
4th, aqueous vapor is separated the stratification containing water slurry collected in crust block technique, is circulated throughout by slagging-off purifying water process area
Filter, the dust-filtering in water body, deslagging, maintain water body more clean, it is ensured that the dust lower content in system circulation water, to prevent
The blocking probability of water pump, shower nozzle, valve, water mist dust-removing packing material etc. in locking system, improve the stable operation water of whole system
Flat, reduction maintenance workload；Water circulation uses, energy-conserving and environment-protective；
5th, duct type ionizes dedusting, deodorization process not only small volume, and equipment cost is low, while can also improve ionization and remove
Dirt, the efficiency of deodorization；
6th, the cooling of active whirlwind, benefit wind region, not only substantially mitigate " Bai Long " phenomenon, also take away corresponding water because mending air quantity
Vapour amount, " production waste water " caused by preventing substantial amounts of condensed water can not handle and have to increase huge investment to build at sewage
Reason station.
Brief description of the drawings
Fig. 1 is that a kind of attachment structure of optimum decision system of the utility model is intended to
Fig. 2 is the structure schematic top plan view of the utility model another kind optimum decision system
Fig. 3 is Fig. 2 schematic elevation view
The right side that Fig. 4 is Fig. 2 regards schematic diagram
Fig. 5 is a kind of structural representation in tapered pipeline high speed and high pressure spray-chilling area
Fig. 6 is that a kind of cooling of active whirlwind, benefit wind alkaline water spraying zone and duct type ionize dedusting, the structure in deodorization area is shown
It is intended to
In Fig. 1~6：1 is foaming shower nozzle, and 2 be spray-chilling pipeline, and 201 be venturi reducing dedusting spray piping,
202 be isometrical spray piping, and 3 be the cyclone separator that drips, and 4 be exhaust chimney, and 401 be active dedusting whirlwind area, based on 402
Dynamic whirlwind cooling, Bu Feng areas, 403 be that duct type ionizes dedusting, deodorization area, and 5 be air-introduced machine, and 6 be first order atomizing spray head, 7
For automatic scraping slag filter, 8 be axial flow blower, and 9 be cooling tower, and 10 be first order spray pipeline, and 11 be expanding foam solution blend tank, 12
It is alkali lye preparation tank for conical cowl, 13.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
The tail gas of whirlwind discharge or the tail gas of press flue gas wet process discharge are dried in being produced for wood-based plate PB, for ring
Guaranteed request, it is necessary to reduce dust content, the utility model proposes a kind of PB to dry tail gas wet method treatment system, and the system is not only
The dust content in tail gas can effectively be reduced；And the shower water after being purified during vent gas treatment can be led in time in time
Cross exhaust emissions to carry away, not only substantially mitigate " Bai Long " phenomenon, moreover it is possible to prevent " production waste water " nothing caused by cooling water savings
Method handles and has to increase huge investment to build Sewage Disposal；And crust block and water body can be discharged and divided in time
Without whole production system be shut down during from, deslagging, without manually cleaning.
Concrete technology flow process combination processing system is segmented into following process area：(1) high speed and high pressure atomizing spray
Cooling zone, or, tapered pipeline high speed and high pressure spray-chilling area (apolegamy)；(2) medium temperature flue gas foam dust-removing area；(3) drip
Water whirlwind, actively remove dust devil cooling Jing Chen areas；(4) cooling of active whirlwind, benefit wind region, or, the cooling of active whirlwind, mend wind
Alkaline water sprays region (apolegamy)；(5) remove the gred purifying water process area；(6) water circulation cooling zone；(7) duct type ionization dedusting,
Deodorization area (apolegamy).
The concrete technology in corresponding each area requires as follows：
(1) first area, high speed and high pressure spray-chilling area
The PB tail gas for being sucked and dried whirlwind discharge enters Gas inlet tube, and is cooled down using spray water mist：
Ith, tail gas is cooled fast in certain temperature range, while reduce the exhaust gas volumes of discharge, slow down tail gas wind speed
And blast, so as to realize the process goal of following three aspect：
I, reduce and dry whirlwind exhaust outlet windage, reduce drying air fan energy consumption, reduce production cost；
The larger dust granules of II, settling volume to improve the preliminary cleaning effect of dust granules, to dust surface humidification,
Infiltrate to improve the dust removing effects in the 3rd region；
III, improve the 3rd region and remove liquid effect；
IIth, water-setting sedimentation is implemented to the dust granules in tail gas, tentatively cleans tail gas；
IIIth, shower water initial absorption, reduction odor concentration VOC are passed through.
As a kind of matingplan of optimization, the tail gas for drying whirlwind discharge can also be carried out to mend wind suction, i.e.,：Suction
Blast, which is more than, dries whirlwind discharge blast, forms negative pressure, while aspirates extraneous normal temperature air and mixed with tail gas, is formed and mends wind, its
Technique purpose is：
Ith, the tail gas of whirlwind discharge fully, is timely sucked and dried, ensures 100% exhaust collection effect；
IIth, wind is mended using the external world to cool to tail gas；
IIIth, wind oxygenation is mended, makes nitric oxide and oxygen reaction generation nitrogen dioxide in tail gas, vaporific shower water is two
Nitrogen oxide, which dissolves in, forms nitric acid in water smoke, and the pH instrument detected values installed by the 5th region, adds alkali in shower water in good time
Property preparation, neutralize water body in nitric acid Cheng Shui and salt；
As another prioritization scheme, first area is tapered pipeline high speed and high pressure spray-chilling area, and tail gas is led to
First tapered caliber is crossed, improves wind speed, then anxious expander footpath, a large amount of dust that patch inner-walls of duct is run is rolled onto urgency with venturi principle
Implement spraying and dedusting before expanding the nozzle of position, by the venturi reducing dedusting spray piping of so one or more levels series connection, make
Tail gas is gathered in pipeline at the tapered place of caliber centrally through pipeline, and the dust granules that are carried in tail gas, fibrous caking are then in caliber
Spread apart to tube wall at anxious expansion, be sufficiently mixed with the atomizing spray aqueous vapor being arranged on tube wall, water-setting sedimentation, improve spraying and dedusting
Efficiency.
(2) second area, medium temperature flue gas foam dust-removing area
Tail gas after first area is cooled down or in cooling：
Ith, a large amount of foams are sprayed into, make tail gas from lathery second area by adhering to dust in tail gas and with spray
Water drenching mist enters in the 3rd region；
IIth, exhaust temperature is further reduced by spraying foam water, reduces tail gas wind speed and blast, improve foam dust-removing effect
Fruit；
IIIth, implement foam dust-removing to the dust in tail gas, most slightly larger dust granules in tail gas are filtered substantially
Totally；
IVth, further absorbed, neutralized by spraying foam water, reduce odor concentration VOC.
First area can be multiple spray-chilling, and the spray water pressure of multiple spray-chilling keeps substantially phase
Together, to ensure spraying effect；Likewise, second area is multiple foam dust-removing, multiple spray-chilling and multiple foam remove
Can also staggeredly it be carried out between dirt, and spray-chilling is located at the upstream of foam dust-removing first first, avoids too fast tail
Gas wind speed blows brokenly bubble foam, influences dust removing effects.
(3) the 3rd region, the whirlwind that drip, actively remove dust devil cooling Jing Chen areas
The purpose of technique in the area is that the tail gas for drying discharge is carried out abundant water mixing, while uses water and aerodynamics
Principle realizes the net dirt of water smoke and gas-water separation；Whirlwind area and dust devil area is actively removed including dripping：
Whirlwind area of dripping is to make the air-water mixture of second area from the disengagement chamber bottom of cylinder tangentially into separation
Intracavitary, during rising is rotated：
Ith, using the principle of cyclonic separation, dust, formaldehyde are further separated from tail gas, incorporated in water；
IIth, 80~95% aqueous vapor separation, shower water quick rotational flow in disengagement chamber, dust, fiber knot are implemented
Group condenses in disengagement chamber bottom, and the slag inclusion sewage separated is sent to sedimentation in the 5th region, removed the gred, discharge system after filtering；
IIIth, tail gas tangentially leaves disengagement chamber, into actively removing dust devil cooling Jing Chen areas processing from disengagement chamber top；
Actively remove dust devil area：
Ith, using cyclone dust removal principle, the dedusting utility model patent (patent No. is taken charge of using me： ZL201210545942.9)
Technology, in exhaust chimney bottom, dedusting is again carried out to remaining molecule in tail gas；
IIth, sprayed using atomizing spray water to actively removing dust devil, wash away the dust sorted out and be discharged into
Five regions.
(4) the 4th regions, the cooling of active whirlwind, wind region is mended, or, the cooling of active whirlwind, mend wind alkaline water spraying zone
Domain
The purpose of active whirlwind cools down, the technique in benefit wind region is according to the tail gas discharge capacity after the 3rd regional processing, passes through change
The strong blast volume axial-flow fan of frequency control implements rotation driving to the tail gas after dedusting, tail gas cyclone type is increased：
Ith, fresh air is tangentially supplemented, tail gas rotation is increased, is implemented by centrifugal force：
I, oxygenation, the nitric oxide in tail gas and oxygen reaction are generated nitrogen dioxide, nitrogen dioxide is dissolved in tail gas
Nitric acid is formed in droplet；
II, a certain degree of turbulent fluctuation laminar flow is formed in this region, further improve the mixed proportion of tail gas and water, make as far as possible
Water smoke is sufficiently mixed with tail gas, on the one hand cooling, on the one hand raising efficiency of dust collection；
III, the dust for having infiltrated moisture blown it is attached to chimney jambs last time and flows down, realizes last cyclone dust removal；
IV, the droplet in tail gas blown it is attached to chimney jambs last time and flows down, reclaims moisture again, it is " white to mitigate chimney
Dragon " phenomenon；
IIth, according to environment temperature, FAI Fresh Air Intake amount is adjusted, reduces the moisture of chimney discharge tail gas, even in
Cold day also without too obvious " Bai Long " shape steam tail gas discharge, avoids factory's nearby residents from being mistaken for flue gas, safeguards owner's public affairs
Take charge of reputation and reduce proprietary office and explain workload；
IIIth, the efficiency that wind process also has coolant water temperature is mended, a part of, even all of cooling tower function can be substituted, subtracted
Few investment；
As a kind of preferable matingplan, alkaline Water spray can also be carried out to tail gas simultaneously in the 4th region, i.e., it is main
Dynamic whirlwind cooling, wind alkaline water spray region is mended, the alkaline water of spray is the clean water body after the 6th region cools down
Basic formulations are added to be prepared：
Ith, strengthen the water dissolving of nitrogen dioxide, form nitric acid, and by being quantitatively adding basic formulations in shower water (such as：
Caustic soda sodium hydroxide), nitric acid is neutralized into salt and water；
IIth, implement last time to spray, this region is full of water smoke, adhere to fine solid particle using water smoke for the last time.
As further matingplan, alkaline Water spray sprays for two level, including the alkaline Water spray positioned at downstream
Atomizing spray and the clean water cascade spray positioned at upstream；
Clean water cascade spray has following technique purpose：
Ith, cascade raindrop are formed in the lower zone of cascade spray, mist state water droplet and fine solid particle is adsorbed using big water droplet：
IIth, mend wind and take away steam, the clean water body after the 6th region cools down, 3~6 times are supplemented by axial flow blower
Air quantity take away, avoid the investment of great number water treatment facilities；
IIIth, exhaust temperature is further reduced, mitigates chimney " Bai Long " phenomenon.
Lower floor's alkaline water is located above whirlwind area, for the nitrogen dioxide generated in tail gas after neutralization benefit wind oxygenation；Upper strata
Clean water does not pass through basification, and main function is：First, take away clean steam using tail gas；Second, make what is risen in whirlwind
Droplet condensation declines, and reduces " Bai Long " phenomenon, third, by improving water spray, while increase the blow rate required of axial flow blower, can
To form " cooling tower " function；Fourth, relative individual layer alkalescence Water spray, lower floor's alkaline water pH value of double layers of sprinkling can be bigger by one
A bit, neutralization is more preferable, because if the shower water pH value of individual layer alkalescence Water spray is larger, having during exhaust emissions can
The pollution to air can be caused, and the upper strata shower water of double layers of sprinkling can dilute tail gas, while promote droplet to sink, do not have
Situation is stated, so individual layer alkalescent water spray is more suitable for the less simplified version handling process of vent gas treatment amount, and it is double-deck
Spray is adapted to vent gas treatment amount larger, it is necessary to the tail gas treatment process of " cooling tower " function.
Using the clean shower water for mending wind blower fan and flow-controllable of air volume controlled, formed on the process area top " cold
But tower " function, the cost of investment of independent cooling tower is reduced or remitted, i.e.,：Clean water spray flux is increased, increases and mends wind air quantity to water body implementation
Air cooling cools.Clean water after not being carried away by the wind, air-cooled drops back into bottom of towe with gravity, automatically returns to system.And because mend
Wind direction is tangential direction, and the position forms whirlwind, so, water loss amount longer than common cooling tower cooler effective time
Less.
As a kind of matingplan, duct type ionization dedusting, deodorization can also be set between the 3rd region and the 4th region
Region, the cooling water body after being cooled down in the duct using the 6th region is sprayed to tail gas, and carries out ionization dedusting, to strengthen
Dust removing effects.
(5) the 5th regions, slagging-off purifying water process area
The purpose of technique in the area is：
Ith, the stratification containing pulp water that the 3rd area, the 4th area are discharged, settles deslagging and discharges in time；Implementation is circulated throughout
Filter, the dust-filtering in water body, deslagging, maintain water body more clean, it is ensured that system circulation pigment dust content, in anti-locking system
The blocking probability of water pump, shower nozzle, valve, pipeline etc., improve the stable operation level of whole system, reduce maintenance workload；
IIth, the water after handling sends the 6th region back to and implements to cool, and improves the cooling-down effect of shower water；
If the water that the III, system reclaims from dry tail gas is too big, after water filtration purified treatment, energy work can be delivered to
Factory's water treatment system, as the water source of boiler water or other service waters such as：Fire water, cooling water, sealing water, rinse water, work
The industrial waters such as skill water；
IVth, during water circulation use, part steam can vapor away with exhaust emissions, reduce water body storage and processing
Burden.
(6) the 6th regions, water circulation cooling zone
The purpose of technique in the area is：
Ith, cooling is implemented to the clean water body after the 5th regional processing, it is ensured that effective temperature-reducing is implemented to high-temperature tail gas, slowed down
Tail gas speed, improve net dirt effect；
IIth, according to environment temperature, the 6th region and each Water District domain temperature, cooling water flow is implemented to control, it is ensured that be
The stable operation of system.
Embodiment 1
Processing system as shown in Figure 1, including the spray-chilling pipeline 2 being sequentially connected with, the cyclone separator 3 that drips,
Air-introduced machine 5 and exhaust chimney 4.
The side wall of spray-chilling pipeline 2 is provided with first order atomizing spray first 6, and first order spray includes four atomization sprays
Leaching, wherein preceding atomizing spray twice share a spray pipeline, after twice atomizing spray share a spray pipeline, to ensure four
The spray pressure pressure of secondary atomizing spray is identical；Below first order spray head, provided with foaming shower nozzle 1, foaming spray includes two
Secondary foaming spray, wherein one step foaming spray spray positioned at secondary-atomizing and three times between atomizing spray, second time of foaming spray position
In four atomizing spray downstreams.
The cyclone separator 3 that drips is in hollow cylindrical, its bottom crust block area and (the automatic scraping slag mistake of automatic scraping slag filter 7
Filter 7 can use me to take charge of the technology of granted patent 201510415129.3 and its improvement project or similar other slag remover skills
Art) it is connected；Drip cyclone separator 3 inlet and outlet pipeline respectively drip the bottom of cyclone separator 3, top tangentially with
The internal chamber of cyclone separator 3 of dripping connects.
Air-introduced machine 5 aspirates tail gas from spray-chilling pipeline 2 towards the direction of exhaust chimney 4, the chamber of air-introduced machine 5
Top sets second level spray head, and bottom crust block area is connected with automatic scraping slag filter 7；
Exhaust chimney 4 includes the crust block area that sequentially arranges from bottom to up, actively except dust devil area 401, the cooling of active whirlwind,
Bu Feng areas 402, wherein：
Crust block area is connected with automatic scraping slag filter 7；
Along exhaust chimney 4, tangentially access actively removes dust devil area 401 to the export pipeline of air-introduced machine 5, actively except dust devil area
401 tops are provided with third level spray head；
The cooling of active whirlwind, the side wall of Bu Feng areas 402 are provided with axial flow blower 8, the air draft direction edge exhaust cigarette of axial flow blower 8
The beveling of the side wall of chimney 4 is upward, can form cyclone type ascending air；
The water purification outlet of automatic scraping slag filter 7 is connected with the import of cooling tower 9；Automatic scraping slag filter 7 is folded up and down
The double-deck automatic scraping slag filter 7 added, the water body after the processing of upper strata automatic scraping slag filter 7 flow into the automatic scraping slag filtering of lower floor
In machine 7.
Water purification outlet and/or cooling tower 9 outlet of automatic scraping slag filter 7 pass through first order spray pipeline 10, second
Level spray pipeline and third level spray pipeline connect first order spray head, second level spray head and third level spray head respectively；
The water purification outlet and/or cooling tower 9 of automatic scraping slag filter 7 are exported by the pipeline connection foaming shower nozzle that foams；
Foaming pipeline is provided with expanding foam solution blend tank 11；
The sensor set in the output end of spray-chilling pipeline 2 controls axial flow blower 8, regulation by control system
The air quantity and blast of axial flow blower 8.
Wherein, the spray-chilling pipeline 2 and its first order atomizing spray of internal configuration is first 6, foaming shower nozzle 1 corresponding the
One region high speed and high pressure spray-chilling area and second area medium temperature flue gas foam dust-removing area；Drip cyclone separator 3 and master
It is dynamic except corresponding 3rd region in dust devil area 401 drip whirlwind, actively remove dust devil and cool down Jing Chen areas；The cooling of active whirlwind, mend wind
The corresponding 4th region active whirlwind cooling in area 402, mend wind region；The corresponding 5th region slagging-off Water warfare of automatic scraping slag filter 7
Treatment region；The corresponding 6th regional water circulating cooling area of cooling tower 9.
The processing parameter of the processing system is as follows：
1st, before processing PB dries tail gas parameter
2nd, PB dries tail gas parameter after handling
Embodiment 2
Processing system as shown in figs. 2 to 4, including be sequentially connected with spray-chilling pipeline 2, drip cyclone separator
3rd, air-introduced machine 5 and exhaust chimney 4, some pipelines connections are eliminated in figure.
The entrance of spray-chilling pipeline 2 configures conical cowl 12, the big small end direction and atomizing spray of conical cowl
The airintake direction of cooling line 2 is consistent, and is communicated with air, and conical cowl small end is tightly placed on spray-chilling pipeline 2, small
Wind-supplying mouth is opened up in the side wall of spray-chilling pipeline 2 in end.
The side wall of spray-chilling pipeline 2 is provided with three first order spray pipelines 10, corresponding atomizing spray three times, by upper
Under, first time 100~150m of water spray3/ h, second, the water spray of third time be 40~80m3/ h, is sprayed three times
Pressure it is identical.
The cyclone separator 3 that drips is in hollow cylindrical, its bottom crust block area and (the automatic scraping slag mistake of automatic scraping slag filter 7
Filter 7 can use me to take charge of the technology of granted patent 201510415129.3 and its improvement project or similar other slag remover skills
Art) it is connected；Drip cyclone separator 3 inlet and outlet pipeline respectively drip the bottom of cyclone separator 3, top tangentially with
The internal chamber of cyclone separator 3 of dripping connects.
Air-introduced machine 5 aspirates tail gas from spray-chilling pipeline 2 towards the direction of exhaust chimney 4；
Exhaust chimney 4 includes the crust block area that sequentially arranges from bottom to up, actively except dust devil area 401, the cooling of active whirlwind,
Bu Feng areas 402, wherein：
Crust block area is connected with automatic scraping slag filter 7.
Along exhaust chimney 4, tangentially access actively removes dust devil area 401 to the export pipeline of air-introduced machine 5.
The cooling of active whirlwind, the side wall of Bu Feng areas 402 are provided with 5 axial flow blowers 8, the air draft direction edge row of axial flow blower 8
The beveling of the side wall of Gas chimney 4 is upward, can form cyclone type ascending air；The air quantity of axial flow blower 8 is 50000~70000m3/ h, wind
Press as 300~400Pa.
The water purification outlet of automatic scraping slag filter 7 is connected with the import of cooling tower 9；Automatic scraping slag filter 7 is folded up and down
The double-deck automatic scraping slag filter 7 added, the water body after the processing of upper strata automatic scraping slag filter 7 flow into the automatic scraping slag filtering of lower floor
In machine 7.
Water purification outlet and/or cooling tower 9 outlet of automatic scraping slag filter 7 are connected by first order spray pipeline 10
First order spray head；
The sensor set in the output end of spray-chilling pipeline 2 controls axial flow blower 8, regulation by control system
The air quantity and blast of axial flow blower 8.
Wherein, spray-chilling pipeline 2 and its corresponding first area high speed of the first order atomizing spray of internal configuration first 6
High-pressure atomization spraying and cooling area；Dripping, correspondingly drip cyclone separator 3 whirlwind, master in the 3rd region with dust devil area 401 is actively removed
It is dynamic to remove dust devil cooling Jing Chen areas；The cooling of active whirlwind, the corresponding 4th region active whirlwind cooling in Bu Feng areas 402, mend wind region；
The corresponding 5th region slagging-off purifying water process area of automatic scraping slag filter 7；The corresponding 6th regional water circulating cooling area of cooling tower 9.
In addition, in above-mentioned two embodiment, crust block area bottom is connected by sludge pump with automatic scraping slag filter 7, mud
Pump operates setting time value at interval of setting time section, without being shut down to whole system during slagging-off, without artificial on duty or people
Work removes the gred.
Embodiment 3
As shown in figure 5, the venturi reducing dedusting spray piping 201 with two sections of series connection on spray-chilling pipeline 2,
Along tail gas direct of travel, the caliber of venturi reducing dedusting spray piping 201 is gradually reduced；Two sections of venturi reducing dedusting showers
Connected between road 201 by isometrical spray piping 202；First order atomizing spray first 6 includes configuring along tail gas direct of travel interval
3 atomizing spray heads.Venturi reducing dedusting spray piping 201 corresponds to tapered pipeline high speed and high pressure spray-chilling
Area.
Embodiment 4
As shown in fig. 6, the cooling of active whirlwind, the top of Bu Feng areas 402 set fourth stage spray head and level V spray head；From
The dynamic water purification outlet for scraping slag filter 7 and/or the outlet of cooling tower 9 pass through fourth stage spray pipeline and level V spray pipeline point
Lian Jie not fourth stage spray head and level V spray head；Also, fourth stage spray pipeline is provided with alkali lye preparation tank 13, level V
Spray head is located above fourth stage spray head.The cooling of active whirlwind, Bu Feng areas 402 correspond to air cooling, mend wind alkalescence Water spray
Region.
Duct type ionization dedusting, deodorization area 403 are additionally provided with exhaust chimney 4, duct type ionization dedusting, deodorization area 403 are pushed up
Portion is provided with the 6th grade of spray head, and water purification outlet and/or cooling tower 9 outlet of automatic scraping slag filter 7 pass through the 6th grade of spray
Pipeline connects the 6th grade of spray head.
Claims (6)
1. a kind of PB dries tail gas wet method treatment system, it is characterised in that：Including be sequentially connected with spray-chilling pipeline (2),
Drip cyclone separator (3), air-introduced machine (5) and exhaust chimney (4)；
Spray-chilling pipeline (2) side wall is provided with first order atomizing spray head (6)；Below first order spray head, it is provided with
Foam shower nozzle (1)；
The cyclone separator (3) that drips is in hollow cylindrical, and its bottom crust block area is connected with automatic scraping slag filter (7)；Drip rotation
The inlet and outlet pipeline of wind separator (3) tangentially divides on the cyclone separator that drips (3) bottom, top with the whirlwind that drips respectively
Connected from device (3) internal chamber；
Air-introduced machine (5) aspirates tail gas from spray-chilling pipeline (2) towards exhaust chimney (4) direction, air-introduced machine (5) chamber
Top set second level spray head, bottom crust block area is connected with automatic scraping slag filter (7)；
Exhaust chimney (4) includes the crust block area that sequentially arranges from bottom to up, actively except dust devil area (401), the cooling of active whirlwind,
Bu Feng areas (402), wherein：
Crust block area is connected with automatic scraping slag filter (7)；
Along exhaust chimney (4), tangentially access actively removes dust devil area (401) to the export pipeline of air-introduced machine (5), actively except dust devil
Third level spray head is provided with above area (401)；
The cooling of active whirlwind, Bu Feng areas (402) side wall are provided with axial flow blower (8), the air draft direction edge exhaust of axial flow blower (8)
The beveling of chimney (4) side wall is upward, can form cyclone type ascending air；
The water purification outlet of automatic scraping slag filter (7) is connected with cooling tower (9) import；
Water purification outlet and/or cooling tower (9) outlet of automatic scraping slag filter (7) pass through first order spray pipeline (10), the
Two level spray pipeline and third level spray pipeline connect first order spray head, second level spray head and third level spray head respectively；
Water purification outlet and/or cooling tower (9) outlet of automatic scraping slag filter (7) pass through the pipeline connection foaming shower nozzle that foams；
Foaming pipeline is provided with expanding foam solution blend tank (11)；
The sensor set in spray-chilling pipeline (2) output end controls axial flow blower (8), adjustment axis by control system
The air quantity and blast of flow fan (8).
2. PB according to claim 1 dries tail gas wet method treatment system, it is characterised in that：The spray-chilling pipeline
(2) the venturi reducing dedusting spray piping (201) with one or more snippets series connection on, along tail gas direct of travel, venturi becomes
Footpath dedusting spray piping (201) caliber is gradually reduced；Pass through isometrical spray between multistage venturi reducing dedusting spray piping (201)
Shower pipe road (202) connects；
The first order atomizing spray head (6) includes the multiple atomizing spray head configured along tail gas direct of travel interval, multiple mist
The spray water pressure of change spray head is identical, and the foaming shower nozzle (1) includes the multiple foaming configured along tail gas direct of travel interval
Shower nozzle (1), every 1~3 atomizing spray head downstream are correspondingly arranged 1~2 foaming shower nozzle (1), and foaming shower nozzle (1) is arranged at atomization
Spraying cooling pipeline (2) caliber becomes general goal.
3. PB according to claim 1 dries tail gas wet method treatment system, it is characterised in that：The spray-chilling pipeline
(2) entrance configuration conical cowl (12), the direction of the big small end of conical cowl (12) and the air inlet of spray-chilling pipeline (2)
Direction is consistent, and is communicated with air, and conical cowl (12) small end is tightly placed on spray-chilling pipeline (2), the mist in small end
Change and open up wind-supplying mouth in spraying cooling pipeline (2) side wall.
4. PB according to claim 1 dries tail gas wet method treatment system, it is characterised in that：Crust block area bottom passes through silt
Dredge pump is connected with automatic scraping slag filter (7), and sludge pump operates setting time value at interval of setting time section.
5. PB according to claim 1 dries tail gas wet method treatment system, it is characterised in that：The active whirlwind cooling, mend
Fourth stage spray head and/or level V spray head are set at the top of wind area (402)；The water purification outlet of automatic scraping slag filter (7)
And/or cooling tower (9) outlet connects fourth stage spray head respectively by fourth stage spray pipeline and/or level V spray pipeline
And/or level V spray head；Also, fourth stage spray pipeline is provided with alkali lye preparation tank (13), level V spray head is positioned at the
Above level Four spray head.
6. PB according to claim 1 dries tail gas wet method treatment system, it is characterised in that：In the exhaust chimney (4) also
Provided with duct type ionization dedusting, deodorization area (403), the 6th grade of spray is provided with the top of duct type ionization dedusting, deodorization area (403)
Head, water purification outlet and/or cooling tower (9) outlet of automatic scraping slag filter (7) connect the 6th by the 6th grade of spray pipeline
Level spray head.
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| CN201720751094.5U CN206911048U (en) | 2017-06-26 | 2017-06-26 | A kind of PB dries tail gas wet method treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112742145A (en) * | 2020-12-10 | 2021-05-04 | 哥乐巴环保科技(上海)有限公司 | Dry tail gas treatment system |
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2017
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112742145A (en) * | 2020-12-10 | 2021-05-04 | 哥乐巴环保科技(上海)有限公司 | Dry tail gas treatment system |
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