CN205340463U - Wood fibre drying device tail gas environmental protection processing system - Google Patents

Wood fibre drying device tail gas environmental protection processing system Download PDF

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Publication number
CN205340463U
CN205340463U CN201620090390.0U CN201620090390U CN205340463U CN 205340463 U CN205340463 U CN 205340463U CN 201620090390 U CN201620090390 U CN 201620090390U CN 205340463 U CN205340463 U CN 205340463U
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China
Prior art keywords
demister
level
grades
flue
tail gas
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Withdrawn - After Issue
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CN201620090390.0U
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Chinese (zh)
Inventor
余传林
唐义磊
何成国
王祺
徐良义
钱德玉
陶立
关小川
郑贺
李鹏飞
曹红阳
曹威
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DALIAN KELIN ENERGY ENGINEERING TECHNOLOGY DEVELOPMENT Co Ltd
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DALIAN KELIN ENERGY ENGINEERING TECHNOLOGY DEVELOPMENT Co Ltd
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Priority to CN201620090390.0U priority Critical patent/CN205340463U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

The utility model relates to a wood fibre drying device tail gas environmental protection processing system sprays washing desulfurization dust pelletizing system and defogging system in the dust removal deentrainment tower, and the dust removal deentrainment tower is connected to the organic waste gas adsorption system through the flue, sprays washing desulfurization dust pelletizing system and utilizes processing system to communicate with sewage cycle, the organic waste gas adsorption system is passed through the flue and is connected the fan pipeline, and fan pipe connection fan, fan pipeline pass through the flue and connect cyclone. It can effectually give the desorption to SO2, NOX and dust in the flue gas rather than contact reaction to spray washing desulfurization dust pelletizing system, the saturated condition that defogging system destroyed particulate fluidization " aerosol " reaches except that the water smoke mesh, organic substance in the organic waste gas adsorption system absorption tail gas, sewage cycle utilizes the recoverable reaction of processing system back waste liquid, reaches its filter sediment wastewater recovery cyclic utilization's purpose. The utility model discloses the effective processing to the dry waste gas that produces of wood fibre reaches environmental protection emission requirement.

Description

A kind of wood fibre drying device tail gas environment-friendly disposal system
Technical field
This utility model relates to industrial waste gas treatment technology technology, refers more particularly to a kind of wood fibre drying device tail gas environment-friendly disposal system.
Background technology
Dry wood fibre is generally burned by boiler with the bark in production line, wood flour, washing grain slag, useless fiber, sawing powder, the wood powder of sanding and edges of boards etc. for fuel and provides drying energy, so the dry tail gas of wood fibre is the waste gas that the flue gas provided by waste incineration system is discharged after wood fibre drying system, therefore the flue gas that burning produces is mainly composed of CO2、H2O、N2、SO2、NOXAnd solid particulate matter etc..The waste gas entering wood fibre drying system is made up of three strands of flue gases, the flue gas after waste heat boiler is lowered the temperature of the first Gu Shi heating center scrap incinerator shunting, the flue gas after heat-conducting oil furnace is lowered the temperature of the second Gu Shi heating center scrap incinerator shunting, the high-temperature flue gas that second Gu Shi heating center scrap incinerator is expelled directly out, three strands of flue gases mix in flue gas mixing-chamber be adjusted to uniform temperature after send into wood fibre drying system.
Wood fibre drying system adds the chemical substance such as adhesive, waterproofing agent because of technological requirement to entering in dry wood fibre, dry complete fiber is sub-elected in process route fiber and the powder of micelle by separator, and tail gas empties usually by cyclone separator.In dry run, wood fibre produces fine fraction powder body, skewness, oarse-grained dust reaches the separation of about 80%-90% in cyclonic separation, below 100 μm of levels, in cyclonic separation, separation efficiency is relatively low, especially fine fraction dust separation efficiency in cyclonic separation of 0-60 μm of level is lower, generally fine fraction dust separation efficiency in cyclonic separation of 0-100 μm of level reach 40%-50% be difficult to;And moisture is evaporated and becomes steam in wood fibre, cyclone separator is entered along journey, at Cyclone outlet place because of the relatively low formation water smoke of temperature, water smoke and flue gas composition " aerosol " of dry evaporation, be somebody's turn to do the saturation that " aerosol " is particulate fluidization, along with temperature raises, particulate fluidization state is more stable, when temperature be increased to water smoke completely from liquid conversion be gaseous state namely become gaseous state mutually time, water smoke and elimination, but outlet port forms again water smoke after meeting cold conditions air.So its major pollutants of tail gas emptied by cyclone separator are water smoke, formaldehyde, phenols, NMHC, SO2、NOXAnd solid dust.Owing to current Domestic Environment is polluted, destroyed acutely, the requirement of Environmental protection is more strict, therefore it is required that the tail gas of industrial discharge is carried out appropriate process.The materials such as the dry tail gas of wood fibre discharges after should carrying out environmental protection treatment, processes the dry tail gas of wood fibre with exhaust gas processing devices such as de-S, N or particle-removings and is not enough to meet the requirement of environmental protection, water smoke are difficult to be processed.
Utility model content
In order to solve the problems referred to above, this utility model provides a kind of wood fibre drying device tail gas environment-friendly disposal system, alkali liquor spray is utilized to neutralize the element sulphur in tail gas, spray washing measure is taked to make the saturation that water smoke and the dry flue gas evaporated in tail gas form particulate fluidization " aerosol " to destroy, water smoke forms the forms such as big water droplet, the globule and relies on gravity to remove, and utilizes the organic principles such as the formaldehyde in activated carbon adsorption tail gas, phenols and NMHC class material.
For realizing object above, by the following technical solutions: a kind of wood fibre drying device tail gas environment-friendly disposal system, mainly include spray washing desulfurization dust-removal system, demister system, organic exhaust gas adsorption system and effluent cycle utilization and process system, spray washing desulfurization dust-removal system and demister system are in dedusting deentrainment tower, dedusting deentrainment tower is connected to organic exhaust gas adsorption system by flue, and spray washing desulfurization dust-removal system processes system connectivity with effluent cycle utilization;Described spray washing desulfurization dust-removal system includes two grades of showers, one-level shower, sewage draining exit, described demister system includes one-level demister, two grades of demisters, pipe is cleaned in one-level demister bottom, pipe is cleaned on one-level demister top and pipe is cleaned in two grades of demister bottoms, one-level shower is set gradually from bottom to up in dedusting deentrainment tower, two grades of showers, one-level demister and two grades of demisters, it is respectively provided with one-level demister bottom above and below one-level demister and cleans pipe and one-level demister top cleaning pipe, two grades of demisters are arranged below two grades of demister bottoms and clean pipe, dedusting deentrainment tower inner bottom part is provided with sewage draining exit;Described organic exhaust gas adsorption system is absorbent charcoal adsorber;Described effluent cycle utilization processes system and includes clear water reserviors, steel wire drainage screen, second-level settling pond, first stage precipitation tank, scraper slag removing machine, wood flour storage pool, separated by steel wire drainage screen respectively between clear water reserviors, second-level settling pond, first stage precipitation tank, second-level settling pond and first stage precipitation tank are connected with wood flour storage pool by scraper slag removing machine, and wood flour storage pool connects with sewage draining exit.
Described dedusting deentrainment tower inner bottom part is designed as tilting, and sewage draining exit is at inclination angle place.
Described organic exhaust gas adsorption system passes through flue connecting fan pipeline, and Fan pipeline connecting fan, Fan pipeline connects cyclone dust extractor by flue, and cyclone dust extractor upper end is offgas outlet, and cyclone dust extractor lower end is ash discharging hole.
Tail gas introduces in dedusting deentrainment tower, clear water reserviors pump in the two-stage shower arranged in dedusting deentrainment tower by water pump, and clear water reserviors add the alkali liquor aqueous solution in alkalescence, by shower, tail gas is sprayed, two-stage shower is arranged according to same sectional uniform in dedusting deentrainment tower tower, it is ensured that to gas shower washing uniformly.
Spray liquid becomes cross-counterflow to be beneficial in flue gas SO after shower nozzle atomization with tail gas2、NOXIts haptoreaction is removed and fine dusts wet method removes elimination.When the water smoke in tail gas is through two-stage demister, the pipe of demister upper and lower part cleaning simultaneously carries out clear water spray, and demister upper and lower part is cleaned pipe and arranged according to same sectional uniform, it is ensured that to gas shower washing uniformly.During spray washing, the saturation making the particulate fluidization " aerosol " of water smoke and dust suction particle form thereof will be destroyed, breaking the effect of the various power such as the molecule letter power between water smoke molecule, Van der Waals force and reach cohesion, water smoke forms the forms such as big water droplet, the globule and relies on gravity to remove.Neutralizer and the big water droplet of demister system water smoke formation that spray washing desulfurization dust-removal system produces all flow into effluent cycle utilization from the race sewage draining exit of dedusting deentrainment tower and process system.Containing organic principles such as formaldehyde, phenols and NMHCs in tail gas, activated carbon adsorption is set before air-introduced machine and is adsorbed and decompose.
This utility model beneficial effect: effectively processing for the waste gas produced time dry on the basis of wood fibre drying process not affecting, spray washing desulfurization dust-removal system can be effective for SO in flue gas2、NOXAnd dust is in contact with it reaction and is removed;Demister system water smoke can effectively will destroy for the saturation of the particulate fluidization " aerosol " of water smoke and dust suction particle form, eliminates water smoke, and the dust-laden being bonded in flue gas on Turbogrid plates is effectively removed;Activated carbon adsorption system can for formaldehyde, phenols and NMHC class material and removed;Waste liquid after the effluent cycle utilization process recyclable reaction of system, is filtered precipitation and is reached the purpose of sewage recycle and reuse, saved the investment cost of sewage disposal.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present utility model.
As shown in the figure: 1, fiber drying gas inlet, 2, connect flue I, 3, dedusting deentrainment tower, 4, one-level shower, 5, two grades of showers, 6, one-level demister, 7, two grades of demisters, 8, pipe is cleaned in one-level demister bottom, 9, pipe is cleaned on one-level demister top, 10, pipe is cleaned in two grades of demister bottoms, 11, sewage draining exit, 12, wood flour storage pool, 13, second-level settling pond, 14, first stage precipitation tank, 15, scraper slag removing machine, 16, steel wire drainage screen II, 17, clear water reserviors, 18, steel wire drainage screen I, 19, connect flue II, 20, absorbent charcoal adsorber, 21, connect flue III, 22, it is flexible coupling I, 23, Fan pipeline, 24, blower fan, 25, connect flue IV, 26, it is flexible coupling II, 27, cyclone dust extractor, 28, offgas outlet, 29, ash discharging hole.
Detailed description of the invention
Embodiment
Below in conjunction with accompanying drawing to this utility model to further illustrating;Wood fibre drying device tail gas environment-friendly disposal system, is divided into 4 subsystems by this system, and it includes spray washing desulfurization dust-removal system, demister system, organic exhaust gas adsorption system and effluent cycle utilization and processes system.Spray washing desulfurization dust-removal system includes spray washing desulfurization dust-removal system and includes two grades of showers (5), one-level shower (4), sewage draining exit (11);Demister system includes one-level demister (6), two grades of demisters (7), one-level demister bottoms are cleaned pipe (8), one-level demister top cleaning pipe (9) and two grades of demister bottoms and cleaned pipe (10);Organic exhaust gas adsorption system is absorbent charcoal adsorber (19);Effluent cycle utilization processes system and includes clear water reserviors (17), steel wire drainage screen I (18), second-level settling pond (13), steel wire drainage screen II (16), first stage precipitation tank (14), scraper slag removing machine (15), wood flour storage pool (12).
Fiber drying gas inlet (1) is connected to dedusting deentrainment tower (3) by connecting flue I (2), spray washing desulfurization dust-removal system and demister system are in dedusting deentrainment tower (3), one-level shower (4) is set gradually from bottom to up in dedusting deentrainment tower (3), two grades of showers (5), one-level demister (6) and two grades of demisters (7), it is respectively provided with one-level demister bottom above and below one-level demister (6) and cleans pipe (8) and one-level demister top cleaning pipe (9), two grades of demisters (7) are arranged below two grades of demister bottoms and clean pipe (10), one-level shower (4), two grades of showers (5), one-level demister (6), two grades of demisters (7), pipe (8) is cleaned in one-level demister bottom, pipe (9) is cleaned on one-level demister top, two grades of demister bottoms are cleaned pipe (10) and are arranged in same cross section all respectively, dedusting deentrainment tower (3) inner bottom part is designed as tilting, inclination angle place sets sewage draining exit (11), sewage draining exit (11) connects with wood flour storage pool (12), wood flour storage pool (12) and second-level settling pond (13), first stage precipitation tank (14) is connected by scraper slag removing machine (15), second-level settling pond (13) and first stage precipitation tank (14) are separated by steel wire drainage screen II (16), second-level settling pond (13) and clear water reserviors (17) are separated by steel wire drainage screen I (18).Dedusting deentrainment tower (3) air outlet is connected with absorbent charcoal adsorber (20) by connecting flue II (19), absorbent charcoal adsorber (20) is by connecting flue III (21) and being flexible coupling and I (22) be connected to Fan pipeline (23), Fan pipeline (23) connecting fan (24), Fan pipeline (23) is by connecting flue IV (25) and being flexible coupling and II (26) be connected to cyclone dust extractor (27), cyclone dust extractor (27) upper end is offgas outlet (28), and cyclone dust extractor (27) lower end is ash discharging hole (29).

Claims (3)

1. a wood fibre drying device tail gas environment-friendly disposal system, it is characterized in that, mainly include spray washing desulfurization dust-removal system, demister system, organic exhaust gas adsorption system and effluent cycle utilization and process system, spray washing desulfurization dust-removal system and demister system are in dedusting deentrainment tower (3), dedusting deentrainment tower (3) is connected to organic exhaust gas adsorption system by flue, and spray washing desulfurization dust-removal system processes system connectivity with effluent cycle utilization;Described spray washing desulfurization dust-removal system includes two grades of showers (5), one-level shower (4), sewage draining exit (11), described demister system includes one-level demister (6), two grades of demisters (7), pipe (8) is cleaned in one-level demister bottom, pipe (9) is cleaned on one-level demister top and pipe (10) is cleaned in two grades of demister bottoms, one-level shower (4) is set gradually from bottom to up in dedusting deentrainment tower (3), two grades of showers (5), one-level demister (6) and two grades of demisters (7), it is respectively provided with one-level demister bottom above and below one-level demister (6) and cleans pipe (8) and one-level demister top cleaning pipe (9), two grades of demisters (7) are arranged below two grades of demister bottoms and clean pipe (10), dedusting deentrainment tower (3) inner bottom part is provided with sewage draining exit (11);Described organic exhaust gas adsorption system is absorbent charcoal adsorber (20);Described effluent cycle utilization processes system and includes clear water reserviors (17), steel wire drainage screen, second-level settling pond (13), first stage precipitation tank (14), scraper slag removing machine (15), wood flour storage pool (12), clear water reserviors (17), second-level settling pond (13), first stage precipitation tank are separated by steel wire drainage screen between (14) respectively, second-level settling pond (13) and first stage precipitation tank (14) are connected with wood flour storage pool (12) by scraper slag removing machine (15), and wood flour storage pool (12) connects with sewage draining exit (11).
2. a kind of wood fibre drying device tail gas environment-friendly disposal system according to claim 1, it is characterised in that described dedusting deentrainment tower (3) inner bottom part is designed as tilting, and sewage draining exit (11) is at inclination angle place.
3. a kind of wood fibre drying device tail gas environment-friendly disposal system according to claim 1, it is characterized in that, described organic exhaust gas adsorption system passes through flue connecting fan pipeline (23), Fan pipeline (23) connecting fan (24), Fan pipeline (23) connects cyclone dust extractor (27) by flue, cyclone dust extractor upper end is offgas outlet (28), and cyclone dust extractor lower end is ash discharging hole (29).
CN201620090390.0U 2016-01-29 2016-01-29 Wood fibre drying device tail gas environmental protection processing system Withdrawn - After Issue CN205340463U (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105498431A (en) * 2016-01-29 2016-04-20 大连科林能源工程技术开发有限公司 Environmental protection treatment system for tail gas generated by wood fiber drying device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105498431A (en) * 2016-01-29 2016-04-20 大连科林能源工程技术开发有限公司 Environmental protection treatment system for tail gas generated by wood fiber drying device
CN105498431B (en) * 2016-01-29 2017-06-27 大连科林能源工程技术开发有限公司 A kind of wood fibre drying device tail gas environment-friendly disposal system

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AV01 Patent right actively abandoned
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Granted publication date: 20160629

Effective date of abandoning: 20170627