CN204768126U - Charcoal kiln flue gas treatment system - Google Patents

Charcoal kiln flue gas treatment system Download PDF

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Publication number
CN204768126U
CN204768126U CN201520507713.7U CN201520507713U CN204768126U CN 204768126 U CN204768126 U CN 204768126U CN 201520507713 U CN201520507713 U CN 201520507713U CN 204768126 U CN204768126 U CN 204768126U
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China
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flue gas
charcoal kiln
gas
kiln flue
condensation
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CN201520507713.7U
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韩临超
陈鹏
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Hebei Zhongqing Environment Protection Technology Co Ltd
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Hebei Zhongqing Environment Protection Technology Co Ltd
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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
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/10Biofuels, e.g. bio-diesel

Abstract

The utility model provides a charcoal kiln flue gas treatment system, belongs to the technical field of smoke gas treatment, includes hierarchical dust collecting equipment, flue gas exhaust stacks and the switch board be connected with charcoal kiln gas vent, hierarchical dust collecting equipment structure in including condensation processing apparatus, static adsorption equipment and set up in the combustor in chimney exit, the advancing of condensation processing apparatus, gas outlet are connected with charcoal kiln gas vent, static adsorption equipment's gas access respectively, static adsorption equipment's gas outlet is connected with the chimney air inlet with the help of draught fan and pipeline. The utility model discloses an electrostatic charcoal kiln flue gas treatment equipment, the key lies in that the cooperation of three processes uses strict with the accuse with order successively, and condensing equipment is as first process, and static adsorption equipment is as the second operation work, and flue gas burner is as third way process, and charcoal kiln flue gas passes through this three processes in proper order, makes charcoal kiln flue gas thoroughly purified at last.

Description

A kind of charcoal kiln flue gas governing system
Technical field
The utility model belongs to the technical field of smoke gas treatment, relates to the system that a kind of charcoal kiln flue gas is administered, is specifically related to a kind of charcoal kiln flue gas governing system.
Background technology
China's charcoal production and application had the history of centuries, the stock stock dense smoke that charcoal kiln is emerged, causes atmosphere pollution, compromises the healthy of neighbouring resident and living environment.Analyze with regard to charcoal kiln smoke property:
1. the thermal decomposition of timber: the thermal decomposition of timber and Main Components thereof
The Main Components of timber: cellulose, hemicellulose and lignin.
1) cellulosic thermal decomposition
Cellulose is heated to 100 degree, some physical changes only occur, when temperature reaches 162 degree, start have gas to release.When temperature reaches 275 degree, there is significant exothermic effect.The heat energy of releasing makes own temperature be elevated to more than 80 degree.When temperature rises to 400-475 degree, almost all volatile matter separates.
2) thermal decomposition of hemicellulose
Start thermal decomposition when being heated to 180 degree, 220 degree start heat release, and 270 degree of reactions terminate.
3) thermal decomposition of lignin
Lignin is heated to 250 degree to start to decompose, generate a small amount of carbon dioxide and CO gas, when temperature be raised to 320-340 spend time, start to produce a large amount of steam gas products, wherein there are acetic acid, wood tar and other lignin degradation products, and have hydrocarbon in gas.About 400-450 degree, lignin pyrolysis is the most remarkable.
2. charcoal pyrolysis product
1) solid product: charcoal.Charcoal is loose porous black solid.Its proportion is 1.4-1.6, gravity 0.6-0.8, and heaping weight is 0.3.
2) product liquid: the product liquid of the carbonization of wood is made up of many different materials, their output is different from the kind of timber, quality and carbonization condition.More than 180 kind of different material is had in the product liquid of the carbonization of wood.These materials can be divided into 11 classes: acids, alcohols, ester class, ketone, aldehydes, ethers, phenols, lactone, hydrocarbon, carbohydrate and heterocyclic compound.Generally be commonly referred to as crude pyroligneous acid, be divided into clarification pyrolkigneous liquid and settled tar.Clarification pyrolkigneous liquid is the yellow liquid to rufous, and have the special cigarette smell of burning, proportion is 1.02-1.05, the moisture wherein containing 80%-90% and 10%-20% organic matter.Settled tar is the oily liquids of dark thick shape, and proportion is 1.01-1.1.
3 original control measures:
(1) manufacturer of charcoal is in order to improve workman's production environment, adopts combustion method to reduce fume emission.Combustion method: lighted when charcoal thermal decomposition later stage carbon monoxide can meet burning condition, CO burning generates carbon dioxide, and its shortcoming is pyrolysis early stage, and the flue gas produced cannot be administered.
Chemical formula: 2CO+O 2=2CO 2(condition is for lighting)
(2) method also having some other charcoal manufacturer to adopt spray column cooling to add bag-type dusting in order to the flue gas solving charcoal thermal decomposition generation in early stage is administered it, the operation principle of spray column is be power with water pump is that medium is introduced in spray column by pipeline with water, water under the effect of high pressure quickly through pipeline be arranged on the shower nozzle high velocity impact that tower interior conduit exports and produce mist droplet, droplet with by tower time and flue gas high velocity impact catch, time increasing under droplet constantly collides, because self gravitation falls in pond at the bottom of tower, flue gas after purification enters sack cleaner through the gas outlet of tower top and pipeline, small dust under the microcellular structure of cloth bag in air and droplet by cloth bag fiber stop catch after through gas outlet by arranging outward through high smoke evacuation chimney after pipeline and air-introduced machine.
There is following shortcoming in this design:
The efficiency of dust collection of a, spray column depends on " liquid-gas ratio " (ratio of injection flow rate and flue gas), and water consumption is large, and efficiency of dust collection is low, and small grit is difficult to catch.
The product liquids such as the pyrolkigneous liquid that the drop of b, atomization liquefies after fully reducing flue-gas temperature and tar are caught to flow in pond afterwards by water and cause water pollutions.
C, sewage follow the bad steam using sewage drop and high-temperature flue gas collision rift easily to produce pollution, cause secondary pollution.
D, small grit and tar and steam easily result in blockage to cloth bag hole, reduce cloth bag service life, and not easy-to-clean ash regeneration after tar blocking cloth bag, must regularly replace filter bag, so increase operating cost.
The inflammable toxic and harmful such as e, carbon monoxide is disposed in air and causes air pollution, threatens to the living environment of neighbouring resident.
Thus, how solving charcoal kiln CR production and improve resident living environment, reducing the replacement frequency of equipment operating cost and rapid wear consumptive material, is the First Principles of modification scheme.
Utility model content
The utility model is difficult to process in order to the flue gas solving charcoal kiln in prior art and produce, the technical problem of contaminated environment, invent a kind of charcoal kiln flue gas governing system, have simple to operate, energy consumption is low, environmental protection, can the feature of thorough purifying smoke, the utility model is realize the technical scheme that its object adopts to be:
A kind of charcoal kiln flue gas governing system, comprise the classification cleaner, fume emission chimney and the power distribution cabinet that are connected with charcoal kiln exhaust outlet, described classification cleaner structure comprises condensation process device, electrostatic adsorption device and is arranged at the burner of chimney outlet, the inlet, outlet of condensation process device is connected with the gas access of charcoal kiln exhaust outlet, electrostatic adsorption device respectively, and the gas vent of electrostatic adsorption device is connected with chamber inlet with pipeline by air-introduced machine.
Described electrostatic adsorption device is tubular electrostatic precipitator, this tubular electrostatic precipitator structure comprises cylindrical shell, the gas access that cylindrical shell is offered and gas vent, is arranged at discharge electrode in cylindrical shell and dust collecting electrode, is arranged at dust hopper below dust collecting electrode, one group of steel pipe that control of dust is very connected with power distribution cabinet positive pole, electric discharge is very suspended to steel pipe center and the steel wire be connected with power distribution cabinet negative pole.
Described condensation process device comprises casing, be fixed on the tubulation of box house, be arranged at tank ends and the air inlet be communicated with by tubulation and gas outlet and be positioned at the removal waste fluid mouth of bottom half, above tubulation, be also fixed with air cooling equipment and water cooling plant.
Described removal waste fluid mouth is provided with 2, is arranged at air inlet end and gas outlet end respectively.
Described air cooling equipment is made up of 3 cooling fans, and 3 cooling fans are evenly distributed on the top of condensation process device box.
Described water cooling plant is arranged at above tubulation, below air cooling equipment, comprises shower nozzle, pipeline, water pump and water tank, and described pipeline one end is connected with shower nozzle, and the other end is connected with water pump, and described water pump is connected with water tank, and described water tank arranges bottom half.
The beneficial effects of the utility model are: electrostatic charcoal kiln flue gas governing system of the present utility model, key is controlling with the use of the strict handle with sequencing of three process, adopt condensing unit as first operation, by the product liquid of the high-temperature gasifications such as wood tar, pyrolkigneous liquid, steam in flue gas, the mode of condensation is adopted to carry out condensation recovery; Adopt electrostatic adsorption device as second operation work, by the mist droplet of product liquid in flue gas after condensation and dust, adopt the mode of electric fishing to carry out Electrostatic Absorption; And then in conjunction with the burner at chimney place as last procedure of smoke gas treatment, burn when CO gas reaches burning concentration, thus reach the effect that charcoal kiln flue gas thoroughly purifies.
In the utility model equipment, the key of electrostatic adsorption device is the distribution of adsorbing electric field, the dust collecting electrode be made up of the steel pipe of positively charged vertical arrangement and the discharge electrode be made up of the steel wire that steel pipe center is electronegative form, in the non-uniform electric field that discharge electrode and dust collecting electrode form, with the very negative pole that discharges, control of dust is positive pole very, and charge with the high-voltage DC power supply of 72 kilovolts, when the intensity of this electric field brings up to a certain value, negative corona is formed around discharge electrode, the ionization of gas molecule is strengthened, create a large amount of negative ions, negative ions is discharged pole neutralization, anion and free ion then shift to dust collecting electrode, when the gas with dust passes through, these electronegative particles will constantly be encountered at the volley and be attracted on grit, make dirt powder and mist droplet charged, under the effect of electric field force, motion reaches dust collecting electrode very soon, release negative electrical charge, itself being deposited on dust leg makes gas be purified, when small mist is cumulative cannot bear own wt time, under gravity along the downward landing of control of dust tube wall, thus reach deashing regeneration object.
Electrostatic charcoal kiln flue gas abatement equipment of the present utility model also has the following advantages:
1, avoid pernicious gas to workman and neighbouring life resident cause pollution, be ensure that workman is physically and mentally healthy, reduce the input of environmental protection project fund, played the effect of importance.
2, device structure is simple to operation, and maintenance cost is low, and without the need to changing consumable accessory, non-secondary pollution, reduces water resource waste.
3, energy consumption is low, and blower fan adopts VFC effectively to reduce energy consumption, and high voltage source is entered electricity and adopted the civilian electricity of common 380V/220V to be transformed by high voltage package, and voltage high current is low, energy consumption low (about a few hectowatt).
The product liquids such as the wood tar 4, collected and pyrolkigneous liquid, recyclable recycling.
(1) wood tar---be a kind of hydrocarbon-containifirst, acids, organic compound that phenols is higher, be mainly used as disinfectant and anticorrisive agent, creasote, anti-polymerization inhibitor, floatation frother can be obtained after processing, the products such as wood pitch; Also can be used for the departments such as medicine, synthetic rubber and metallurgy.It is the industrial chemicals that economic worth is very high.
(2) pyrolkigneous liquid----be the acidic liquid of the pH3 degree taking acetic acid as main component, very similar with tone to the composition of vinegar, press separately diverse ways refining after be pyroligneous acid.Briefly wood make emerge in the process of charcoal flue gas liquefaction and obtain, therefore pyrolkigneous liquid be trees charing is the energy in wood is become gas concentration form, containing K, Ca, Mg, Zn, Ge, Mn, the mineral matters such as Fe, in addition containing Aneurine and B2, general pyrolkigneous liquid: agricultural is used, feed use, industrial.First distilled pyroligneous acid: skin manages with (special [different anti-] answering property skin, beriberi etc.), distilled pyroligneous acid again: as food additives, the use such as beverage, agriculturally can recover soil fertility, improve cultivation power, save chemical pesticide, chemical fertilizer, recover the effects such as moisture.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model charcoal kiln flue gas governing system.
Fig. 2 is the enlarged drawing of part A in Fig. 1.
In accompanying drawing, 1 represents condensation process device, and 1-1 represents casing, and 1-2 represents tubulation, 1-3 represents air inlet, and 1-4 represents gas outlet, and 1-5 represents removal waste fluid mouth, and 1-6 represents air cooling equipment, 1-7 represents water cooling plant, and 1-8 represents water tank, and 2 represent electrostatic adsorption device, 2-1 represents cylindrical shell, and 2-2 represents gas access, and 2-3 represents gas vent, 2-4 represents discharge electrode, and 2-5 represents dust collecting electrode, and 3 represent chimney, 4 represent burner, and 5 represent air-introduced machine, and 6 represent pipeline.
Detailed description of the invention
The utility model is difficult to process in order to the flue gas solving charcoal kiln in prior art and produce, the technical problem of contaminated environment, invent a kind of charcoal kiln flue gas governing system, have simple to operate, energy consumption is low, environmental protection, can the feature of thorough purifying smoke, below in conjunction with detailed description of the invention, the utility model is further described.
In the utility model, the power supply of charcoal kiln flue gas governing system is provided by power distribution cabinet, the high-voltage DC power supply of power distribution cabinet-installed in startup on distribution box control panel, stop button and distribution box by distribution box and being arranged on, oxygen sensing controler, air cooling equipment contactor, water cooling plant contactor and be arranged on the equipment such as lambda sensor on gas approach place pipeline and form.Wherein be connected with the action contact of water cooling plant contactor with the air cooling equipment contactor of distribution box inside by controlling cable with stop button by the startup on distribution box control panel, air cooling equipment contactor is connected with 1 water pump of water cooling plant with 3 axial flow blowers of the air cooling equipment on trumpet cooler by threephase cable respectively with the three-phase power output end of water cooling plant contactor.The both positive and negative polarity of the high-voltage DC power supply of distribution box inside is connected with the steel wire (discharge electrode) being arranged in negative "-" electric charge of steel pipe its central band with the band steel pipe (dust collecting electrode) that just "+" electric charge is vertically arranging of tubular electrostatic precipitator respectively by cable.
Detailed process is: see Fig. 1, the direction of arrow represents flue gas flow direction, flue gas outlet on charcoal kiln is controlled by sealed butterfly valve, prevent air from entering, when kiln temperature reaches pyrolysis condition, control butterfly valve is opened when having flue gas to produce, pressing start button on power distribution cabinet makes whole system connection power supply start working, flue gas is under the promotion of air-introduced machine, fan inlet place produces negative pressure, the flue gas in charcoal kiln is forced to enter tubulation 1-2 from charcoal kiln gas outlet by the air inlet 1-3 of condensation process device 1, flue gas through condensation process device tubulation 1-2 due to tubulation 1-2 many flue gases cross-sectional area large, flue gas slowly flows from the air inlet 1-3 of condensation process device 1 to gas outlet 1-4, under air cooling equipment 1-6 above outside tubulation wall and the forced cooling effect of water cooling plant 1-7, high-temperature flue gas in tubulation 1-2 constantly and tubulation tube wall generation heat exchange action, drop to when the fine liquid product in flue gas reaches condensation temperature in tubulation 1-2, and flowed out by the removal waste fluid mouth 1-5 below air inlet 1-3 and below the 1-4 of gas outlet, collect.
When the flue gas that product liquid is removed in condensation enters electrostatic adsorption device 2 by the gas outlet 1-4 of condensation process device 1 and pipeline because the cylindrical shell 2-1 cross section of electrostatic adsorption device 2 is large, when flue gas enters absorption electric field slowly, the discharge electrode 2-4 of electric field and dust collecting electrode 2-5 is under the driving of high voltage source both positive and negative polarity, air in electric field is ionized, negative corona is formed around discharge electrode 2-4, the effect that is ionized of the particle molecule in air is strengthened, create a large amount of negative ions, negative ions is discharged pole neutralization, anion and free ion then shift to dust collecting electrode 2-5, when the flue gas with dust and residual droplets passes through, these electronegative particles will constantly be encountered at the volley and be attracted on grit, make dirt powder charged, under the effect of electric field force, motion arrives dust collecting electrode 2-5 very soon, release negative electrical charge, itself being deposited on collecting plate makes gas be purified, when the dust on collecting plate and drop get more and more, because the related dust of self gravitation factor of drop instills in the sedimentation basin below electrostatic adsorption device 2 together, liquid in final sedimentation tank is flowed out by the pipeline be connected with outside bottom sedimentation basin, collect.
Flue gas after electrostatic adsorption device 2 purifies enters the chimney 3 be connected with air-introduced machine 5 gas outlet through air-introduced machine 5, finally contain the fuel gas of CO by burner 4 ignition combustions arranged in chimney 3 exit, thus reaches the object that flue gas thoroughly purifies.

Claims (6)

1. a charcoal kiln flue gas governing system, comprise the classification cleaner be connected with charcoal kiln exhaust outlet, fume emission chimney (3) and power distribution cabinet, it is characterized in that: described classification cleaner structure comprises condensation process device (1), electrostatic adsorption device (2) and be arranged at the burner (4) in chimney (3) exit, entering of condensation process device (1), gas outlet respectively with charcoal kiln exhaust outlet, the gas access of electrostatic adsorption device (2) connects, the gas vent of electrostatic adsorption device (2) is connected with chimney (3) air inlet with pipeline (6) by air-introduced machine (5).
2. a kind of charcoal kiln flue gas governing system according to claim 1, it is characterized in that: described electrostatic adsorption device (2) is tubular electrostatic precipitator, this tubular electrostatic precipitator structure comprises cylindrical shell (2-1), the gas access (2-2) that cylindrical shell (2-1) is offered and gas vent (2-3), be arranged at the discharge electrode (2-4) in cylindrical shell (2-1) and dust collecting electrode (2-5), be arranged at the dust hopper of dust collecting electrode (2-5) below, dust collecting electrode (2-5) is the one group of steel pipe be connected with power distribution cabinet positive pole, discharge electrode (2-4) is for being suspended to steel pipe center and the steel wire be connected with power distribution cabinet negative pole.
3. according to claim a kind of charcoal kiln flue gas governing system, it is characterized in that: described condensation process device (1) comprises casing (1-1), be fixed on the inner tubulation (1-2) of casing (1-1), be arranged at casing (1-1) two ends and the air inlet (1-3) be communicated with by tubulation (1-2) and gas outlet (1-4) and the removal waste fluid mouth (1-5) being positioned at casing (1-1) bottom, is also fixed with air cooling equipment (1-6) and water cooling plant (1-7) in tubulation (1-2) top.
4. a kind of charcoal kiln flue gas governing system according to claim 3, is characterized in that: described removal waste fluid mouth (1-5) is provided with 2, is arranged at air inlet end and gas outlet end respectively.
5. a kind of charcoal kiln flue gas governing system according to claim 3, is characterized in that: described air cooling equipment (1-6) is made up of 3 cooling fans, and 3 cooling fans are evenly distributed on the top of condensation process device box.
6. a kind of charcoal kiln flue gas governing system according to claim 3, it is characterized in that: described water cooling plant (1-7) is arranged at tubulation (1-2) top, air cooling equipment (1-6) below, comprise shower nozzle, pipeline, water pump and water tank, described pipeline one end is connected with shower nozzle, the other end is connected with water pump, described water pump is connected with water tank (1-8), and described water tank (1-8) arranges casing (1-1) bottom.
CN201520507713.7U 2015-07-14 2015-07-14 Charcoal kiln flue gas treatment system Active CN204768126U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104984626A (en) * 2015-07-14 2015-10-21 河北中清环保科技有限公司 Wood charcoal kiln smoke gas treatment system
WO2020083226A1 (en) * 2018-10-22 2020-04-30 上海必修福企业管理有限公司 Exhaust treatment system and method
TWI734266B (en) 2019-11-21 2021-07-21 永霆國際竹炭實業有限公司 Cooling system for carbonization kiln equipment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104984626A (en) * 2015-07-14 2015-10-21 河北中清环保科技有限公司 Wood charcoal kiln smoke gas treatment system
CN104984626B (en) * 2015-07-14 2018-03-30 河北中清环保科技有限公司 A kind of charcoal kiln flue gas governing system
WO2020083226A1 (en) * 2018-10-22 2020-04-30 上海必修福企业管理有限公司 Exhaust treatment system and method
WO2020083203A1 (en) * 2018-10-22 2020-04-30 上海必修福企业管理有限公司 Exhaust treatment system and method
TWI734266B (en) 2019-11-21 2021-07-21 永霆國際竹炭實業有限公司 Cooling system for carbonization kiln equipment

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