CN107096348A - A kind of PB dries tail gas wet treatment process and processing system - Google Patents
A kind of PB dries tail gas wet treatment process and processing system Download PDFInfo
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- CN107096348A CN107096348A CN201710493668.8A CN201710493668A CN107096348A CN 107096348 A CN107096348 A CN 107096348A CN 201710493668 A CN201710493668 A CN 201710493668A CN 107096348 A CN107096348 A CN 107096348A
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- 238000000034 method Methods 0.000 title claims abstract description 72
- 230000008569 process Effects 0.000 title claims abstract description 47
- 238000012545 processing Methods 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 252
- 239000007789 gas Substances 0.000 claims abstract description 205
- 239000000428 dust Substances 0.000 claims abstract description 103
- 238000001816 cooling Methods 0.000 claims abstract description 99
- 239000006260 foam Substances 0.000 claims abstract description 46
- 230000000694 effects Effects 0.000 claims abstract description 29
- 230000008901 benefit Effects 0.000 claims abstract description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003546 flue gas Substances 0.000 claims abstract description 14
- 239000009270 zilongjin Substances 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 239000010865 sewage Substances 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims description 176
- 239000002893 slag Substances 0.000 claims description 52
- 238000007790 scraping Methods 0.000 claims description 44
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 24
- 238000005187 foaming Methods 0.000 claims description 19
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 18
- 238000004332 deodorization Methods 0.000 claims description 18
- 238000005507 spraying Methods 0.000 claims description 18
- 238000000746 purification Methods 0.000 claims description 17
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 15
- 239000008187 granular material Substances 0.000 claims description 15
- 229910017604 nitric acid Inorganic materials 0.000 claims description 15
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 14
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 13
- 239000000779 smoke Substances 0.000 claims description 13
- 239000003595 mist Substances 0.000 claims description 12
- 230000009467 reduction Effects 0.000 claims description 12
- 239000000498 cooling water Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- 238000004062 sedimentation Methods 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 8
- 238000006213 oxygenation reaction Methods 0.000 claims description 8
- 239000003513 alkali Substances 0.000 claims description 7
- 230000008676 import Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000009472 formulation Methods 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 5
- 239000010802 sludge Substances 0.000 claims description 5
- 230000001174 ascending effect Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000013517 stratification Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 238000000889 atomisation Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000049 pigment Substances 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 239000003643 water by type Substances 0.000 claims description 3
- IWLUJCZGMDWKRT-UHFFFAOYSA-N azane oxygen(2-) titanium(4+) Chemical group N.[O-2].[Ti+4].[O-2] IWLUJCZGMDWKRT-UHFFFAOYSA-N 0.000 claims 1
- 230000008859 change Effects 0.000 claims 1
- 239000003638 chemical reducing agent Substances 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 230000008595 infiltration Effects 0.000 claims 1
- 238000001764 infiltration Methods 0.000 claims 1
- 239000013589 supplement Substances 0.000 claims 1
- 239000002351 wastewater Substances 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 238000005516 engineering process Methods 0.000 description 8
- 235000011121 sodium hydroxide Nutrition 0.000 description 6
- 239000000835 fiber Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
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- 230000007423 decrease Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 239000008235 industrial water Substances 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 241001640558 Cotoneaster horizontalis Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 241000132179 Eurotium medium Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
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- 239000003292 glue Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
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- 239000007924 injection Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- 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
- B01D53/54—Nitrogen compounds
- B01D53/56—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
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
-
- 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
- B01D53/75—Multi-step processes
-
- 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
- B01D53/76—Gas phase processes, e.g. by using aerosols
-
- 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
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/402—Dinitrogen oxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Dispersion Chemistry (AREA)
- Separation Of Particles Using Liquids (AREA)
- Treating Waste Gases (AREA)
Abstract
A kind of PB dries tail gas wet treatment process and processing system, including following process area：First area, high speed and high pressure spray-chilling area；Second area, middle temperature flue gas foam dust-removing area；3rd region, the whirlwind that drips, actively remove dust devil cooling Jing Chen areas；4th region, the cooling of active whirlwind, benefit wind region；5th region, slagging-off purifying water process area；6th region, water circulation cooling zone.This technique and system dust removing, good separating effect；Water body can filter Posterior circle and use, and substantially mitigate " Bai Long " phenomenon when discharging, and also take away corresponding vapour quantity because mending air quantity, prevent " production waste water " that substantial amounts of condensed water is caused from can not handle and having to increase huge investment to build Sewage Disposal.
Description
Technical field
Vent gas treatment field is manufactured the present invention relates to wood-based plate, more particularly to a kind of particieboard (PB) dries tail gas wet process
Technique and 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 reduces wind speed mainly by bottom baffles, 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 is still with exhaust emissions, and baffle-box can not be handled other materials in tail gas, and somebody is contained 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 some other tail gas, the tail gas of the drying whirlwind discharge of such as fiber drying pipe, 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, and 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 be solved 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, MDF dries tail gas amount very greatly (54~650,000 cubic meters/hour), and it is smaller (10~220,000 cubes/small that PB dries tail gas
When).
Lack the technique and processing system being effectively treated to PB tail gas in industry at present.
The content of the invention
The technical problems to be solved by the invention are that providing a kind of PB dries tail gas wet treatment process and processing system, should
Modified technique and processing system can efficiently separate particulate matter, dust and other impurity in tail gas, and in time by particulate matter and
The body refuse formed after dust absorbing moisture content is collected with water body, separated, and maintains water body more clean, recycles water body, is improved whole
The stable operation level of individual system, reduction maintenance workload.
The present invention is achieved by the following technical solutions：
A kind of PB dries tail gas wet treatment process, including following process area：
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 utilizes spray water mist cooling：
Ith, tail gas is made to be cooled fast in certain temperature range, while reducing the exhaust gas volumes of discharge, slowing down tail gas wind speed
And blast, so as to realize the process goal of following three aspect：
Whirlwind exhaust outlet windage is dried in I, reduction, reduces drying air fan energy consumption, reduces 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 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；
Second area, middle 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, tail gas is passed through from lathery second area, the dust in adhesion 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
Really；
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, reduction odor concentration (VOC)；
3rd region, the whirlwind that drips, actively remove dust devil cooling Jing Chen areas
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, the aqueous vapor for implementing 80~95% is separated, shower water quick rotational flow in disengagement chamber, dust, fiber knot
Group condenses in disengagement chamber bottom, and the slag inclusion sewage separated is sent to discharge system after sedimentation in the 5th region, slagging-off, 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 region：
Ith, using cyclone dust removal principle, 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；
4th region, the cooling of active whirlwind, benefit wind region
The technique purpose in the area is, according to the tail gas discharge capacity after the 3rd regional processing, to pass through the Wind Volume axle stream of VFC
Blower fan implements rotation driving to the tail gas after dedusting, tail gas cyclone type is increased：
Ith, fresh air is tangentially supplemented, makes tail gas rotation rising, is implemented by centrifugal force：
Nitric oxide in tail gas and oxygen reaction, are generated nitrogen dioxide, nitrogen dioxide is dissolved in tail gas by I, oxygenation
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 side wall last time and flows down, realizes last cyclone dust removal；
IV, the droplet in tail gas blown it is attached to side wall last time and flows down, moisture is reclaimed again, mitigates chimney " Bai Long " existing
As；
IIth, according to environment temperature, FAI Fresh Air Intake amount is adjusted, the moisture that chimney discharges tail gas is reduced, even in
Cold day is also without too obvious " Bai Long " shape steam tail gas discharge, it is to avoid factory's nearby residents are mistaken for flue gas, safeguard that owner is public
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；
5th region, slagging-off purifying water process area
The technique purpose in the area is：
Ith, the stratification containing pulp water that the 3rd area, the 4th area are discharged, makes deslagging settle and discharge in time；Implementation is circulated throughout
Filter, the dust-filtering in water body, deslagging, maintains water body more clean, it is ensured that in system circulation pigment dust content, anti-locking system
The blocking probability of water pump, shower nozzle, valve, pipeline etc., improves the stable operation level of whole system, reduces 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 is reclaimed from tail gas is dried is too big, after water filtration purified treatment, energy work can be delivered to
Factory's water treatment system, as boiler water water source 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 be vapored away with exhaust emissions, reduced water body storage and handled
Burden；
6th region, water circulation cooling zone
The technique purpose in the area is：
Ith, the clean water body after the 5th regional processing is implemented to cool down, it is ensured that implement effective temperature-reducing to high-temperature tail gas, slow down
Tail gas speed, improves 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.
Further, in the first area, the tail gas for drying whirlwind discharge is carried out to mend wind suction, i.e.,：Aspirate blast
More than whirlwind discharge blast is dried, negative pressure is formed, is mixed while aspirating extraneous normal temperature air with tail gas, is formed and mend wind, its technique
Purpose is：
Ith, fully, timely it is sucked and dried the tail gas of whirlwind discharge, it is ensured that 100% collecting effect；
IIth, wind is mended using the external world to cool to tail gas；
IIIth, wind oxygenation is mended, makes the 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；
Further, the first area be tapered pipeline high speed and high pressure spray-chilling area, by tail gas by first gradually
Draw footpath, improves wind speed, then anxious expander footpath, and a large amount of dust that patch inner-walls of duct is run is rolled onto anxious expansion position with venturi principle
Nozzle before implement spraying and dedusting, by so one or more levels connect venturi reducing dedusting spray piping, tail gas is existed
The tapered place of caliber gathers in pipeline centrally through pipeline, and the dust granules that are carried in tail gas, fibrous caking are then at the anxious expansion of caliber
Spread apart, be sufficiently mixed with the atomizing spray aqueous vapor that is arranged on tube wall to tube wall, water-setting sedimentation improves spraying and dedusting efficiency.
Tail gas wind speed at reducing first rises to be declined again, the dust carried in tail gas is spread to tube wall, preferably with being set on tube wall
Spray head injection shower water fuse, dedusting separating effect is more preferable.
Further, the first area is multiple spray-chilling, and the second area is multiple foam dust-removing, two
Staggeredly carried out between the multiple spray-chilling in region and foam dust-removing, the form not only good dedusting effect of twoth area superposition, and
And compact conformation；Unsuitable excessive in view of the tail gas wind speed in foam dust-removing region, otherwise foam is easy to rupture, dedusting can be influenceed to imitate
Really, therefore first spray-chilling is located at the upstream of foam dust-removing first.
Further, alkaline Water spray is carried out in the 4th region to tail gas simultaneously, described alkaline water is passes through
The clean water body addition basic formulations after the cooling of the 6th region are stated to be prepared from：
Ith, strengthen the water dissolving of nitrogen dioxide, form nitric acid, and by being quantitatively adding basic formulations in shower water (as burnt
Alkali 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.
6th, PB according to claim 5 dries tail gas wet treatment process, it is characterised in that：The alkaline Water spray is
Two grades of sprays, including the alkaline water spray atomizing spray positioned at downstream and the clean water cascade positioned at upstream are sprayed；
Clean water cascade spray has following technique purpose：
Ith, the lower zone formation cascade raindrop sprayed in cascade, mist state water droplet and fine solid particle are adsorbed using big water droplet：
IIth, mend wind and take away steam, the clean water body after the 6th region is cooled down, 3~6 times are supplemented by axial flow blower
Air quantity take away, it is to avoid the investment of great number water treatment facilities；
IIIth, exhaust temperature is further reduced, mitigates chimney " Bai Long " phenomenon.
Using the clean shower water for mending wind blower fan and flow-controllable of air volume controlled, form " cold on the process area top
But tower " function, reduces or remits the cost of investment of independent cooling tower, 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.
Shower water be segmented into above and below two layers, wherein lower floor's clean water is alkaline water, above the whirlwind area, for neutralizing
Mend the nitrogen dioxide generated after wind oxygenation in tail gas；Upper strata clean water does not pass through basification, and main function is：One is to utilize
Tail gas takes away clean steam；Two be to decline the droplet condensation risen in whirlwind, reduces " Bai Long " phenomenon, three be by improving spray
Water drenching amount, while increasing the blow rate required of axial flow blower, can form " cooling tower " function；Four be the relative alkaline Water spray of individual layer,
The alkaline water ph value of the lower floor of double layers of sprinkling can with some larger, neutralization more preferably, because if the spray of individual layer alkalescence Water spray
Water drenching pH value is larger, is likely to result in the pollution to air during exhaust emissions, and the upper strata shower water of double layers of sprinkling
Tail gas can be diluted, while promoting droplet to sink, above-mentioned situation is not had and is occurred, so individual layer alkalescent water spray is more suitable for tail
The less simplified version handling process of gas disposal amount, and to be adapted to vent gas treatment amount larger, it is necessary to " cooling tower " function for double layers of sprinkling
Tail gas treatment process.
Further, duct type ionization dedusting, deodorization region are additionally provided between the 3rd region and the 4th region, in pipe
Cooling water body after being cooled down in road using the 6th region is sprayed to tail gas, and carries out ionization dedusting.Warp is utilized in the duct
The clean water body crossed after the processing of Water warfare deslagging process carries out ionization dedusting and spray to tail gas.The technique can be reduced further
Particle content in tail gas with the subacidity organic matter in dedusting and in tail gas, reduce it and send out alcohol amount with deodorization, equipment is in itself
Cost it is higher, therefore can be matched as needed.Tower ionization dedusting work disclosed in the patent of this department earlier application
Skill, is that ionization dedusting region is set in spray column middle and upper part, and because ionization dedusting Domain Volume is big, equipment cost is high, also,
Ionization dedusting area and low speed flue gas water film dedusting main inhale connect above and below aldehyde process area, low speed flue gas water film dedusting and suction aldehyde technique
A large amount of spray water mists in region are easily carried up into ionization dedusting area by tail gas, and tail gas dilution can influence ionization dedusting, remove
Smelly efficiency；And duct type ionizes dedusting, deodorization process not only small volume, equipment cost is low, while can also be according to scene choosing
The equipment matched somebody with somebody, will ionization dedusting, deodorization pipeline with other process areas are separate separates, distance between the two increases, and enters
Enter to ionize dedusting, deodorization pipeline moisture content it is relatively small so that exhaust gas volumes are relatively reduced, it is possible to increase ionization dedusting,
The efficiency of deodorization.
A kind of processing system for applying above-mentioned PB to dry tail gas wet treatment process, it is characterised in that：Including being sequentially connected with
Spray-chilling pipeline, 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 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 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, 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
Steep pipeline and be 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 correspondence first
Region high speed and high pressure spray-chilling area and the middle temperature flue gas foam dust-removing area of second area；Drip cyclone separator and actively remove
Dust devil area drip in the 3rd region of correspondence whirlwind, actively remove dust devil and cool down Jing Chen areas；The cooling of active whirlwind, Bu Feng areas correspondence the
The cooling of four region active whirlwind, benefit wind region；(automatic scraping slag filter can take charge of granted patent to automatic scraping slag filter using me
201510415129.3 technologies and its improvement project or similar other slag remover technologies) the 5th region of correspondence slagging-off Water warfare
Treatment region；The 6th regional water circulating cooling area of cooling tower correspondence.
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 is sprayed
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 is correspondingly arranged 1~2 foaming shower nozzle, and foaming shower nozzle is set
Become general goal in spray-chilling pipeline caliber.
Further, conical cowl, the big small end direction of conical cowl are configured at the spray-chilling pipeline import
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 on 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 7, sludge pump 11 at interval of
Setting time section operating 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
Drench.
Further, duct type ionization dedusting, deodorization area are additionally provided with the exhaust chimney, duct type ionizes dedusting, removed
Provided with the 6th grade of spray head at 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 present invention 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, middle 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, maintains water body more clean, it is ensured that the dust lower content in system circulation water, prevents
The blocking probability of water pump, shower nozzle, valve, water mist dust-removing packing material etc. in locking system, improves the stable operation water of whole system
Flat, reduction maintenance workload；Water circulation is used, energy-conserving and environment-protective；
5th, duct type ionizes dedusting, deodorization process not only small volume, and equipment cost is low, is removed while ionization can also be improved
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, prevents " production waste water " that substantial amounts of condensed water is caused from can not handle and having to increase huge investment to build at sewage
Reason station.
Brief description of the drawings
Fig. 1 is intended to for a kind of attachment structure of optimum decision system of the invention
Fig. 2 is the structure schematic top plan view of another optimum decision system of the invention
Fig. 3 is Fig. 2 schematic elevation view
Fig. 4 regards schematic diagram for Fig. 2 right side
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 ionization dedusting, the structure in deodorization area are 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, and 402 is actively
Whirlwind cooling, Bu Feng areas, 403 be duct type ionization dedusting, deodorization area, and 5 be air-introduced machine, and 6 be first order atomizing spray head, and 7 are
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, and 12 are
Conical cowl, 13 be alkali lye preparation tank.
Embodiment
The invention will be further described 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 present invention proposes a kind of PB and dries tail gas wet treatment process, and the technique can not only
Dust content effectively in reduction tail gas；And the shower water after being purified during vent gas treatment can be passed through into tail in time in time
Gas discharge is carried away, and not only substantially mitigates " Bai Long " phenomenon, moreover it is possible to prevent " production waste water " that cooling water savings is caused from can not locate
Manage and have to increase huge investment to build Sewage Disposal；And crust block and water body can be discharged and separated in time, arranged
Without whole production system is shut down during slag, 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) middle 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, benefit wind
Alkaline water sprays region (apolegamy)；(5) slagging-off purifying water process area；(6) water circulation cooling zone；(7) duct type ionizes dedusting, removed
Smelly area's (apolegamy).
The concrete technology in each area of correspondence 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 utilizes spray water mist cooling：
Ith, tail gas is made to be cooled fast in certain temperature range, while reducing the exhaust gas volumes of discharge, slowing down tail gas wind speed
And blast, so as to realize the process goal of following three aspect：
Whirlwind exhaust outlet windage is dried in I, reduction, reduces drying air fan energy consumption, reduces 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 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, is mixed while aspirating extraneous normal temperature air with tail gas, formed and mend wind, its
Technique purpose is：
Ith, fully, timely it is sucked and dried the tail gas of whirlwind discharge, it is ensured that 100% exhaust collection effect；
IIth, wind is mended using the external world to cool to tail gas；
IIIth, wind oxygenation is mended, makes the 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, wind speed, then anxious expander footpath is improved, 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 the nozzle for expanding position, by so one or more levels venturi reducing dedusting spray piping connected, 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, be sufficiently mixed with the atomizing spray aqueous vapor that is arranged on tube wall to tube wall at anxious expansion, water-setting sedimentation improves spraying and dedusting
Efficiency.
(2) second area, middle 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, tail gas is passed through from lathery second area, the dust in adhesion 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
Really；
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, reduction 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 are removed
Can also staggeredly it be carried out between dirt, and spray-chilling is located at the upstream of foam dust-removing first first, it is to avoid 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 technique purpose in the area is that the tail gas for drying discharge is carried out abundant water mixing, while using 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, the aqueous vapor for implementing 80~95% is separated, shower water quick rotational flow in disengagement chamber, dust, fiber knot
Group condenses in disengagement chamber bottom, and the slag inclusion sewage separated is sent to discharge system after sedimentation in the 5th region, slagging-off, 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 patent of invention (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, benefit wind region, or, the cooling of active whirlwind, benefit wind alkaline water spraying zone
Domain
The cooling of active whirlwind, the technique purpose in benefit wind region are, according to the tail gas discharge capacity after the 3rd regional processing, to pass through and become
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, makes tail gas rotation rising, is implemented by centrifugal force：
Nitric oxide in tail gas and oxygen reaction, are generated nitrogen dioxide, nitrogen dioxide is dissolved in tail gas by I, oxygenation
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, moisture is reclaimed again, mitigates chimney " white
Dragon " phenomenon；
IIth, according to environment temperature, FAI Fresh Air Intake amount is adjusted, the moisture that chimney discharges tail gas is reduced, even in
Cold day is also without too obvious " Bai Long " shape steam tail gas discharge, it is to avoid factory's nearby residents are mistaken for flue gas, safeguard that owner is public
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 preferred matingplan, alkaline Water spray can also be carried out in the 4th region to tail gas simultaneously, that is, led
Dynamic whirlwind cooling, benefit wind alkaline water spray region, the alkaline water of spray is the clean water body after the 6th region is cooled down
Basic formulations are added to be prepared from：
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 is two grades and sprayed, 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, the lower zone formation cascade raindrop sprayed in cascade, mist state water droplet and fine solid particle are adsorbed using big water droplet：
IIth, mend wind and take away steam, the clean water body after the 6th region is cooled down, 3~6 times are supplemented by axial flow blower
Air quantity take away, it is to 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, and the nitrogen dioxide generated after wind oxygenation in tail gas is mended for neutralizing；Upper strata
Clean water does not pass through basification, and main function is：One is to take away clean steam using tail gas；Two make to rise in whirlwind
Droplet condensation decline, reduce " Bai Long " phenomenon, three be by improving water spray, while increase axial flow blower the blow rate required, can
To form " cooling tower " function；Four be the relative alkaline Water spray of individual layer, and the alkaline water ph value of lower floor of double layers of sprinkling can be bigger by one
A bit, more preferably, because if the spray water ph value of individual layer alkalescence Water spray is larger, having during exhaust emissions can for neutralization
The pollution to air can be caused, and the upper strata shower water of double layers of sprinkling can dilute tail gas, while promoting droplet to sink, 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
It is larger, it is necessary to the tail gas treatment process of " cooling tower " function that spray is adapted to vent gas treatment amount.
Using the clean shower water for mending wind blower fan and flow-controllable of air volume controlled, form " cold on the process area top
But tower " function, reduces or remits the cost of investment of independent cooling tower, 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 can also be set to ionize dedusting, deodorization 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 technique purpose in the area is：
Ith, the stratification containing pulp water that the 3rd area, the 4th area are discharged, makes deslagging settle and discharge in time；Implementation is circulated throughout
Filter, the dust-filtering in water body, deslagging, maintains water body more clean, it is ensured that in system circulation pigment dust content, anti-locking system
The blocking probability of water pump, shower nozzle, valve, pipeline etc., improves the stable operation level of whole system, reduces 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 is reclaimed from tail gas is dried is too big, after water filtration purified treatment, energy work can be delivered to
Factory's water treatment system, as boiler water water source 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 be vapored away with exhaust emissions, reduced water body storage and handled
Burden.
(6) the 6th regions, water circulation cooling zone
The technique purpose in the area is：
Ith, the clean water body after the 5th regional processing is implemented to cool down, it is ensured that implement effective temperature-reducing to high-temperature tail gas, slow down
Tail gas speed, improves 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
Drench, 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 are located between secondary-atomizing spray and three atomizing sprays, 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 take charge of the technology of granted patent 201510415129.3 and its improvement project or similar other slag remover skills using me
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 is connected.
Air-introduced machine 5 by tail gas from spray-chilling pipeline 2 towards the direction of exhaust chimney 4 aspirate, the chamber of air-introduced machine 5 it is upper
Portion 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 side wall beveling 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
Plus double-deck automatic scraping slag filter 7, upper strata automatic scraping slag filter 7 processing after water body flow into lower floor automatic scraping slag filtering
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；
The pipeline that foams 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, adjustment axis by control system
The air quantity and blast of flow fan 8.
Wherein, spray-chilling pipeline 2 and its first order atomizing spray first 6 of internal configuration, foaming shower nozzle 1 correspondence the
One region high speed and high pressure spray-chilling area and the middle temperature flue gas foam dust-removing area of second area；Drip cyclone separator 3 and master
It is dynamic except the 3rd region of correspondence of dust devil area 401 drip whirlwind, actively remove dust devil and cool down Jing Chen areas；The cooling of active whirlwind, benefit wind
The 4th region active whirlwind of the correspondence cooling of area 402, benefit wind region；The correspondence of automatic scraping slag filter 7 the 5th region slagging-off Water warfare
Treatment region；The 6th regional water circulating cooling area of the correspondence 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, some pipeline connections are eliminated in air-introduced machine 5 and exhaust chimney 4, figure.
Conical cowl 12, the big small end direction and atomizing spray of conical cowl are configured at the import of spray-chilling pipeline 2
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 on 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, three atomizing sprays of correspondence, by upper
Under, first time 100~150m of water spray3/ h, second, the water spray of third time be 40~80m3/ h, three sprays
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 take charge of the technology of granted patent 201510415129.3 and its improvement project or similar other slag remover skills using me
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 is connected.
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 side wall beveling 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
Plus double-deck automatic scraping slag filter 7, upper strata automatic scraping slag filter 7 processing after water body flow into lower floor automatic scraping slag filtering
In machine 7.
Water purification outlet and/or cooling tower 9 outlet of automatic scraping slag filter 7 pass through the connection of first order spray pipeline 10 the
One-level spray head；
The sensor set in the output end of spray-chilling pipeline 2 controls axial flow blower 8, adjustment axis by control system
The air quantity and blast of flow fan 8.
Wherein, spray-chilling pipeline 2 and its first 6 correspondence first area high speed of the first order atomizing spray of internal configuration
High-pressure atomization spraying and cooling area；Drip and cyclone separator 3 and actively remove dust devil area 401 and correspondingly drip whirlwind, master in the 3rd region
It is dynamic to remove dust devil cooling Jing Chen areas；The cooling of active whirlwind, the 4th region active whirlwind of the correspondence cooling of Bu Feng areas 402, benefit wind region；
The 5th region of the correspondence of automatic scraping slag filter 7 slagging-off purifying water process area；The 6th regional water circulating cooling area of the correspondence 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 11 is at interval of setting time section operating setting time value, without being shut down to whole system during slagging-off, without artificial on duty or
Artificial slagging-off.
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 cooling tower 9 outlet passes 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 the alkaline Water spray of wind
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 passes through the 6th grade of spray provided with the 6th grade of spray head, water purification outlet and/or cooling tower 9 outlet of automatic scraping slag filter 7
Pipeline connects the 6th grade of spray head.
Claims (13)
1. a kind of PB dries tail gas wet treatment process, including following process area：
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 utilizes spray water mist cooling：
Ith, tail gas is made to be cooled fast in certain temperature range, while reducing the exhaust gas volumes of discharge, slowing down tail gas wind speed and wind
Pressure, so as to realize the process goal of following three aspect：
Whirlwind exhaust outlet windage is dried in I, reduction, reduces drying air fan energy consumption, reduces production cost；
The larger dust granules of II, settling volume are to improve the preliminary cleaning effect of dust granules, to dust surface humidification, infiltration
To improve the dust removing effects in the 3rd region；
III, improve the 3rd region 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；
Second area, middle 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, tail gas is passed through from lathery second area, the dust in adhesion tail gas and with shower water
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；
IIIth, implement foam dust-removing to the dust in tail gas, most slightly larger dust granules in tail gas are filtered clean substantially；
IVth, further absorbed, neutralized by spraying foam water, reduction odor concentration (VOC)；
3rd region, the whirlwind that drips, actively remove dust devil cooling Jing Chen areas
Whirlwind area of dripping is to make the air-water mixture of second area from the disengagement chamber bottom of cylinder tangentially into disengagement chamber,
During rising is rotated：
Ith, using the principle of cyclonic separation, dust, formaldehyde are further separated from tail gas, incorporated in water；
IIth, the aqueous vapor for implementing 80~95% is separated, and shower water quick rotational flow in disengagement chamber coagulates dust, fibrous caking
Knot is in disengagement chamber bottom, and the slag inclusion sewage separated is sent to discharge system after sedimentation in the 5th region, slagging-off, 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 region：
Ith, using cyclone dust removal principle, 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 the 5th area
Domain；
4th region, the cooling of active whirlwind, benefit wind region
The technique purpose in the area is to implement rotation driving to the tail gas after dedusting by the strong blast volume axial-flow fan of VFC, is made
Tail gas cyclone type rises：
Ith, fresh air is tangentially supplemented, makes tail gas rotation rising, is implemented by centrifugal force：
Nitric oxide in tail gas and oxygen reaction, are generated nitrogen dioxide, the small water that nitrogen dioxide is dissolved in tail gas by I, oxygenation
Nitric acid is formed in pearl；
II, a certain degree of turbulent fluctuation laminar flow is formed in this region, further improve the mixed proportion of tail gas and water, water smoke is made as far as possible
It 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 side wall last time and flows down, realizes last cyclone dust removal；
IV, the droplet in tail gas blown it is attached to side wall last time and flows down, moisture is reclaimed again, mitigates chimney " Bai Long " phenomenon；
IIth, according to environment temperature, FAI Fresh Air Intake amount is adjusted, the moisture that chimney discharges tail gas is reduced, even in cold day
Also without too obvious " Bai Long " shape steam tail gas discharge；
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, reduced and throw
Money；
5th region, slagging-off purifying water process area
The technique purpose in the area is：
Ith, the stratification containing pulp water that the 3rd area, the 4th area are discharged, makes deslagging settle and discharge in time；Implement circulating filtration,
The dust-filtering in water body, deslagging, maintain water body more clean, it is ensured that system circulation pigment dust content, anti-locking system reclaimed water
The blocking probability of pump, shower nozzle, valve, pipeline etc., improves the stable operation level of whole system, reduces 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 is reclaimed from tail gas is dried is too big, after water filtration purified treatment, energy plant water can be delivered to
Processing system, is used as the water source or other service waters of boiler water；
IVth, during water circulation use, part steam can be vapored away with exhaust emissions, reduce water body storage and processing is negative
Load；
6th region, water circulation cooling zone
The technique purpose in the area is：
Ith, the clean water body after the 5th regional processing is implemented to cool down, it is ensured that implement effective temperature-reducing to high-temperature tail gas, slow down tail gas
Speed, improves 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 system
Stable operation.
2. PB according to claim 1 dries tail gas wet treatment process, it is characterised in that：In the first area, to dry
The tail gas of dry whirlwind discharge carries out mending wind suction, i.e.,：Aspirate blast and be more than dry whirlwind discharge blast, form negative pressure, take out simultaneously
Inhale extraneous normal temperature air to mix with tail gas, formed and mend wind, its technique purpose is：
Ith, fully, timely it is sucked and dried the tail gas of whirlwind discharge, it is ensured that 100% exhaust collection effect；
IIth, wind is mended using the external world to cool to tail gas；
IIIth, wind oxygenation is mended, makes the nitric oxide and oxygen reaction generation nitrogen dioxide in tail gas, vaporific shower water is titanium dioxide
Nitrogen, which dissolves in, forms nitric acid in water smoke, and the PH instrument detected values installed by the 5th region, adds alkalescence system in shower water in good time
Agent, neutralizes the nitric acid Cheng Shui and salt in water body.
3. PB according to claim 1 dries tail gas wet treatment process, it is characterised in that：The first area is reducer pipe
Road high speed and high pressure spray-chilling area, by tail gas by first tapered caliber, improves wind speed, then anxious expander footpath, in patch pipeline
The a large amount of dust of wall operation implements spraying and dedusting before being rolled onto the anxious nozzle for expanding position with venturi principle, passes through such one-level or many
The venturi reducing dedusting spray piping of level series connection, makes tail gas gather at the tapered place of caliber in pipeline centrally through pipeline, tail gas
Dust granules, the fibrous caking of middle carrying are then spread apart at the anxious expansion of caliber to tube wall, with the atomizing spray being arranged on tube wall
Aqueous vapor is sufficiently mixed, water-setting sedimentation, improves spraying and dedusting efficiency.
4. PB according to claim 1 dries tail gas wet treatment process, it is characterised in that：The first area is multiple mist
Change spraying cooling, the second area is multiple foam dust-removing, between the multiple spray-chilling in two regions and foam dust-removing
Staggeredly carry out, and spray-chilling is located at the upstream of foam dust-removing first first.
5. PB according to claim 1 dries tail gas wet treatment process, it is characterised in that：It is simultaneously right in 4th region
Tail gas carries out alkaline Water spray, and described alkaline water is that the clean water body after the 6th region is cooled down adds basic formulations
It is prepared from：
Ith, strengthen the water dissolving of nitrogen dioxide, form nitric acid, and by being quantitatively adding basic formulations in shower water, by nitric acid
With 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.
6. PB according to claim 5 dries tail gas wet treatment process, it is characterised in that：The alkaline Water spray is two grades
Spray, including the alkaline water spray atomizing spray positioned at downstream and the clean water cascade positioned at upstream are sprayed；
Clean water cascade spray has following technique purpose：
Ith, the lower zone formation cascade raindrop sprayed in cascade, mist state water droplet and fine solid particle are adsorbed using big water droplet：
IIth, mend wind and take away steam, the clean water body after the 6th region is cooled down, pass through 3~6 times of wind of axial flow blower supplement
Amount is taken away, it is to avoid the investment of great number water treatment facilities；
IIIth, exhaust temperature is further reduced, mitigates chimney " Bai Long " phenomenon.
7. PB according to claim 1 dries tail gas wet treatment process, it is characterised in that：3rd region and the 4th area
Duct type ionization dedusting, deodorization region are additionally provided between domain, the cooling water body after being cooled down in the duct using the 6th region is to tail
Gas is sprayed, and carries out ionization dedusting.
8. the PB described in a kind of application claim 1 dries the processing system of tail gas wet treatment process, it is characterised in that：Including suitable
Spray-chilling pipeline (2), the cyclone separator that drips (3), air-introduced machine (5) and the exhaust chimney (4) of secondary connection；
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
From the connection of 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 wall beveling of chimney (4) side 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 grades of spray pipelines 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；
The pipeline that foams 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).
9. processing system according to claim 8, it is characterised in that：One is carried on the spray-chilling pipeline (2)
The venturi reducing dedusting spray piping (201) of section or multi-stage series, along tail gas direct of travel, venturi reducing dedusting shower
Road (201) caliber is gradually reduced；Pass through isometrical spray piping (202) between multistage venturi reducing dedusting spray piping (201)
Connection；
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 for changing 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 is 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.
10. processing system according to claim 8, it is characterised in that：Match somebody with somebody at spray-chilling pipeline (2) import
Conical cowl (12) is put, the direction of the big small end of conical cowl (12) is consistent with the airintake direction of spray-chilling pipeline (2), and
Communicated with air, conical cowl (12) small end is tightly placed on spray-chilling pipeline (2), the spray-chilling pipe in small end
Wind-supplying mouth is opened up on the wall of road (2) side.
11. processing system according to claim 8, it is characterised in that：Crust block area bottom is by sludge pump and automatically
Scrape slag filter (7) to be connected, sludge pump (11) is at interval of setting time section operating setting time value.
12. processing system according to claim 8, it is characterised in that：The active whirlwind cooling, Bu Feng areas (402) top
Portion sets fourth stage spray head and/or level V spray head；The water purification outlet and/or cooling tower of automatic scraping slag filter (7)
(9) outlet connects fourth stage spray head respectively by fourth stage spray pipeline and/or level V spray pipeline and/or level V sprays
Drench head；Also, fourth stage spray pipeline is provided with alkali lye preparation tank (13), level V spray head is located on fourth stage spray head
Side.
13. processing system according to claim 8, it is characterised in that：Duct type electricity is additionally provided with the exhaust chimney (4)
From dedusting, deodorization area (403), the 6th grade of spray head, automatic scraping slag mistake are provided with the top of duct type ionization dedusting, deodorization area (403)
Water purification outlet and/or cooling tower (9) outlet of filter (7) connect the 6th grade of spray head by the 6th grade of spray pipeline.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110833742A (en) * | 2019-12-06 | 2020-02-25 | 中冶焦耐(大连)工程技术有限公司 | Dust-containing tail gas purification device and process |
| CN111348852A (en) * | 2020-04-02 | 2020-06-30 | 郑州三迪建筑科技有限公司 | Flame projecting system of ardealite calcining furnace |
| CN111514703A (en) * | 2020-04-30 | 2020-08-11 | 上海化工研究院有限公司 | Deep purification treatment device and process for tail gas discharged by fiberboard production line |
| CN113144798A (en) * | 2020-12-24 | 2021-07-23 | 哥乐巴环保科技(上海)有限公司 | Shaving board drying tail gas treatment process |
| CN117582778A (en) * | 2024-01-18 | 2024-02-23 | 博仕宠物食品(淮安)有限公司 | Exhaust gas deodorization purifier of pet food processing |
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Application publication date: 20170829 |