CN101732943A - Device and method for controlling waste gas - Google Patents

Device and method for controlling waste gas Download PDF

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Publication number
CN101732943A
CN101732943A CN201010103661A CN201010103661A CN101732943A CN 101732943 A CN101732943 A CN 101732943A CN 201010103661 A CN201010103661 A CN 201010103661A CN 201010103661 A CN201010103661 A CN 201010103661A CN 101732943 A CN101732943 A CN 101732943A
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China
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gas
waste gas
liquid
absorption tower
swirl vane
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CN201010103661A
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Chinese (zh)
Inventor
耿晓音
李玉鸿
张青云
孟宪涛
杨继勇
姜鹏明
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北京绿创大气科技有限公司
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Priority to CN201010103661A priority Critical patent/CN101732943A/en
Publication of CN101732943A publication Critical patent/CN101732943A/en

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Abstract

The invention discloses a device and a method for controlling waste gas. The device comprises an absorption-liquid circulation groove, a cyclone absorption tower connected with the top of the absorption-liquid circulation groove through pipelines, as well as an adsorber of which one end is connected with the top of the cyclone absorption tower and the other end is connected with a liquid drainage port, wherein the cyclone absorption tower comprises a tower body, a gas-liquid-mixing cyclone blade group, a demisting cyclone blade group and a liquid inlet pipeline, and the upper and lower ends of the cyclone absorption tower are provided with a gas inlet pipeline and a gas outlet pipeline respectively. The method comprises the steps of blasting coating waste gas through a fan, allowing the coating waste gas to enter the cyclone absorption tower and the adsorber from an air inlet and treating the coating waste gas. The invention solves system failure caused when viscous components block equipment in the treatment of the coating waste gas containing the viscous components, reduces the time for shutdown maintenance caused by the equipment, as well as the consumption of manpower and material resources, and also solves the problem that the absorption method for controlling waste gas cannot reach standards. A technical system in the invention has high purification efficiency and can completely meet the requirements of national atmospheric pollutant emission standards. The system has the advantages of low resistance, low energy consumption, reliable operation and simple maintenance.

Description

Administer the device and method of waste gas

Technical field

The present invention relates to a kind of device and method of administering waste gas.

Background technology

Application is product surface protection and decorates the most basic technological means that adopts, and painting operation spreads all over each department of national economy, but one of production place that to be environmental pollution main, application workshop, the most serious harm in application workshop is the pollution of waste gas to atmosphere.

In the aerial spraying operation, 50%~70% of solvent based coating disperses with coating cloud in coating process.Most organic solvent volatilizations in the coating are discharged into the atmosphere.In the application discharging harmful exhaust mainly concentrate on the painting line, wherein the paint spray booth, dry the chamber, drying chamber is the main generation source of waste gas.

The harm of volatile organic content mainly shows 3 aspects:

(1) makes that ozone content exceeds standard in the air.On ground, volatile organic content and nitrogen oxide generate ozone under solar radiation.China's ozone industrial hygiene standard is 0.30mg/m 3, the too high meeting of ozone concentration makes the people produce discomfort in the air, and serious meeting causes human body skin canceration and pulmonary emphysema.

(2) consume the high-altitude ozone layer.Be used for surperficial pre-treatment process and clean the solvent of greasy dirt, all consume ozone, make high-altitude ozone layer attenuation, ultraviolet radiation is increased to the amount on the earth surface, life entity is damaged as fluorine Lyons and chlorinated solvents (as 1,1,1-trichloroethanes etc.).

(3) toxicity.Many organic solvents commonly used all have sizable toxicity as dimethylbenzene, toluene, MEK etc., and health is worked the mischief.

To the improvement of waste gas in the coating process mainly from reducing exhaust gas discharging and discharging waste gas being administered two aspects carry out.

Improvement application waste gas need add equipment and resolve into carbon dioxide and water to the recycling of the organic solvent in the waste gas or organic solvent.Because the finiteness of resource causes the price of organic solvent more and more higher, reclaim organic solvent and also just become more and more important.The method of decomposing organic solvent has firing method, ultraviolet ray-ozone method and microorganism decomposition method.The method that reclaims organic solvent has active carbon adsorption and liquid absorption method.

Ultraviolet ray-ozone method is that waste gas is carried out oxidation by the zone of a high density ultraviolet ray irradiation, and the water curtain that the waste gas after the oxidation is contained high-concentrated ozone again absorbs further oxidation, but organic solvent is not through still decomposing fully behind this two-step oxidation.The water that absorbs waste gas needs to pass through the remaining organic solvent of active-carbon bed absorption again, and another has absorbed the active-carbon bed logical high-concentrated ozone oxidation of organic solvent, two active-carbon bed absorption-oxidations that hocket.The advantage of ultraviolet ray-ozone method is not produce CO and NO in the oxidizing process x, and can remove coating cloud particle and organic solvent simultaneously, but the shortcoming of this method is equipment complexity, ozoniferous cost height, needs processing absorption water, and the big occasion of incompatibility waste gas discharge capacity.

The microorganism decomposition method is reducing stink and is removing the application of succeeding on some organic solvents.Its advantage is not produce NOx, and the energy that consumes in the processing procedure seldom, but the space that this method needs is big, microbe treatment system needs to safeguard.Application workshop method commonly used has firing method, liquid absorption method, active carbon adsorption at present.Need consider the composition of waste gas discharge rate, organic solvent and the factors such as size that concentration, cost of equipment and during-operation service expense, equipment take up an area of the space when selecting exhaust gas treatment method.

Firing method is divided into direct firing method and Production by Catalytic Combustion Process.Wherein, direct fired system is made up of burner, combustion chamber and heat exchanger.When the concentration of mixed solvent in the waste gas is higher, consider from safety, need be diluted to 1/4~1/5 of mixed solvent concentration of lower explosive limit with air, just can burn.The gas that will contain organic solvent is heated to 700~800 ℃, and making its direct combustion decomposition is carbon dioxide and water.Will add fuel in addition during burning, the time that waste gas stops in the combustion chamber is 0.5~1.0s.Waste gas such as hydrocarbon could completing combustion under higher temperature, also produces photochemical fog material NOx simultaneously, and required air quantity etc. is relevant when the generation of NOx and the kind of burning, ignition temperature, equipment mechanism and burning, wherein the most important thing is ignition temperature.Therefore for avoiding producing photochemical fog material NOx, directly ignition temperature should be controlled at below 800 ℃.Adopt direct firing method to handle waste gas, about 500~600 ℃ of the burning gas temperature after being handled by combustion furnace for reclaiming heat energy, needs the heat exchanger of high price.Directly firing method can produce heat, and gas electricity generator has ready-made technology again, and the two is in conjunction with just generating electricity.In the factory of the state of Michigan, the volatile organic matter of collecting is converted into electric energy by gas electricity generator as Ford Motor Company.The application waste gas of this method suitable treatment high concentration, little air quantity, efficient height, simple structure, cost of equipment are low, waste heat can utilize.

Production by Catalytic Combustion Process also claims catalyst combustion method and catalyst oxidizing process, is to use platinum, cobalt, copper, nickel etc. as catalyst, and the gas that will contain application waste gas and coating cloud is heated to 200~300 ℃, by catalyst layer, under lower temperature, reaches completing combustion.This method is suitable for the purification of the application waste gas of high concentration, little air quantity.Shortcoming is that Superficial Foreign Body adheres to catalyst poisoning was lost efficacy, and catalyst and equipment price are more expensive.

Liquid absorption method is also referred to as the gas-liquid mass transfer absorption process, with liquid as absorbent, harmful components in the waste gas are absorbed by liquid, thereby reach the purpose of purification, its absorption process is to carry out gas molecule diffusion between gas phase and the liquid phase or DIFFUSION IN TURBULENCE is carried out substance transfer.The key of liquid absorption method is the selection of absorbent.

Domestic existing water comes treatment of water-soluble coating as absorbent, and the main component of water soluble paint combustion gas is a hydrophilic solvent.Waste gas enters in the tower at the bottom of by the absorption tower, enters from top, absorption tower and is disperseed as the water of absorbent.Gas from bottom to top with liquid contact process from top to bottom in, hazardous solvent gas is absorbed by water in the waste gas, and waste gas is purified.Purify back gas and discharge, and tank is discharged and flowed into to the water that contains waste gas at the bottom of by tower by top, absorption tower.Need the waste water that produces is done after-treatment.

The washing of Japan Daihatsu Motor company exploitation absorbs organic solvent method in paint spray booth's waste gas, is that waste gas is passed through the absorption tower, waste gas is fully contacted with water, and solvent-laden water utilizes or discharging again after biochemical treatment.

U.S. HadenDrysys company adopts the oily solvent that absorbs in the paint spray booth, allows waste gas pass through the adsorption chamber of 5 oil spouts, and waste gas is fully contacted with oil, and organic solvent is absorbed.Solvent-laden oil is recycling after handling through fractionation, and treated waste gas enters in the atmosphere.

The Ma2jumdar of U.S. NewJerseyInstituteofTechnology department of chemistry engineering, S etc. make organic solvent pass through the hollow fiber type fenestra, and silicone oil absorbs organic solvent in the waste gas as absorbent.

The hollow fiber type membrane module is hundreds of thousands and even up to a million doughnuts to be curved U-shaped pack in the withstand voltage device, and fiber tip is fixed on the top of pressure vessel, sticks with glue agent and cements, and solidifies the back cutting, forms neat openend.This arts demand uses two hollow fiber film assemblies, an assembly absorption, the desorption organic solvent regeneration simultaneously of another assembly, the two adsorption-desorption that hockets.In absorbent module, the waste gas openend enters hollow-fibre membrane, discharges from the hole of hollow-fibre membrane, and absorbent is pumped, and the outer surface absorption organic solvent of doughnut is crossed in reverse flow.Here absorbent requires air is not adsorbed substantially, but needs adsorb organic solvent very effectively, but also require it be inertia, non-volatile, nontoxic substantially be the organic liquid material.Use silicone oil to make absorbent in this experiment.The absorbent that has adsorbed organic solvent enters in the desorption assembly, and heating is removed organic solvent and made absorbent regeneration under the atmosphere that vacuumizes.Near the paint spray booth in U.S. Robins air base, set up so small-scale adsorption-desorption hollow fiber film assembly, handle the waste gas of from the paint spray booth, discharging, can reach 95% organic solvent clearance.

Have the application experience in many years as application workshop waste-gas adsorbant with active carbon.The active carbon low price, there is hydrophobicity on the surface, (500~1200m2/g) is big for specific area, thereby absorption property with excellence, can make organic solvent steam absorption in its surface, when the heating, drying adsorbent, the gas that is adsorbed parses, be cooled to liquid state, thereby reach the purpose that reclaims solvent.Molecular sieve with hydrophobic surface costs an arm and a leg.Be the occasion of purpose to remove organic solvent, active carbon is optimum adsorbent.

China once adopted particle diameter to make thickness 0.8~1.5m adsorbent charcoal layer at the active carbon about 5mm in the absorption tower.From the waste gas of paint spray booth and drying chamber, behind filter and cooler, remove the coating cloud in the waste gas, and be reduced to required temperature.Enter the absorption tower by the bottom, absorption tower, absorb the pernicious gas in the waste gas, the clean gas after the purification is discharged in the atmosphere.Handle waste gas flow velocity 0.3~0.6m/s, but only limit to low concentration gas, solvent cleaning efficient can reach 95%.When handling waste gas by adsorption layer, most adsorbate is adsorbed in adsorption layer, along with the adsorption time continuity, the adsorption capacity of active carbon layer reduces, its live part is more and more thinner, and when containing in the gas of exit when being adsorbed matter, at this moment whole active carbon layer is penetrated.If continue to use, it is more and more to handle in the gas of back contained adsorbate, when outlet side concentration reaches entrance concentration, and the active carbon state that reaches capacity then.Need desorption this moment, makes active carbon have activity again.The tradition regeneration method of active carbon has water vapour, non-active gas, high temperature sintering and distillation under vacuum.

Steam regeneration method commonly used makes the mist behind the desorption enter condenser and is cooled to liquid, and then enter separator make solvent and moisture from, reclaim solvent.If also contain hydrophilic alcohols, acetone etc. in the water, need to discharge after treatment.

NACF is as sorbing material, and its service life is longer 3~4 times than ordinary granular active carbon.The domestic device that also occurs employing NACF (ACF) as adsorbing medium recovery organic solvent.Utilization has two kinds of methods for recovered solvent: fractionation utilization or burning produce heat again.Burning need increase catalytic combustor and hot air circulating system in equipment, will just no longer need steam desorption organic solvent from the organic solvent high temperature catalytic combustion of desorption on the NACF and for the operation of equipment provides energy.

The DwivediP of India technical college department of chemistry engineering etc. adopt business-like NACF tubular reactor absorption organic gas, adopt the direct current heating of about 50V during the desorption organic solvent, can be heated to 120~150 ℃, in 45~60min, can finish by desorption.

The latest development is to adopt active carbon fiber fabrics (ACFC) to switch on as adsorbing medium to add thermal desorption recovery organic solvent in the world now.This method has the following advantages: the mass transfer of organic solvent between solid phase and fluid phase is fast, fast 2~20 times than granular active carbon; The ACFC long service life; Active carbon fiber fabrics can Fast Heating, do not need the water vapour desorption, thereby operation and maintenance is easy, and the organic solvent of desorption does not need to dewater, and can directly use.

France LeCloirec adopts ACF, and energising adds thermal desorption and reclaims carrene and experimentize as adsorbing medium.This features of experiment is to use two assemblies adsorption-desorption that hockets, and does not need in the operation process to safeguard.

Make the cylinder shape assembly of two long 50cm of diameter 20cm with active carbon fiber fabrics.A cylinder shape assembly absorption, the desorption organic solvent regeneration simultaneously of another assembly, the two adsorption-desorption that hockets adsorbs earlier, and the time interval is 1h.

Contain 3~18g/m in the experiment 3The contaminated air of carrene is with 320m 3The data rate stream mistake of/h, the concentration of outlet carrene is reduced to 120mg/m 3, promptly the average discharge of carrene is 3g/h.Directly apply electric current and heat cylinder shape assembly, can make its surface temperature be elevated to about 60 ℃, use 5m then 3/ h, promptly the nitrogen stream of flow velocity 16m/h blows away the carrene of desorption, and recycle the cooling back.Any operational issue does not appear in this covering device 24h every day continuous operation 17 months, and behavior in service is fine.

The Sullivan of U.S. Universityoflllinois environmental project system, employing ACFC such as PatrickD adsorb MEK as adsorbing medium, energising adds the thermal desorption MEK again, the active carbon fiber fabrics temperature that is placed in the container is elevated to more than the boiling point of MEK, and MEK flows away in the container inner wall condensation.The advantage of this experimental technique be organic solvent after the container inner wall condensation with the liquid form recovery that flows away.

[the Austin of URS company, TX78729, UnitedStates] Dombrows2kiKatherineD etc. adopt active carbon fiber fabrics absorption electrical heating desorption apparatus, tested methyl iso-butyl ketone (MIBK), MEK, n-hexane, acetone, chloroethanes mist, their concentration is in (200~1020) * 10 -6Between, solvent recovering rate surpasses 99.9%.The exhaust gas pressure that increases by active carbon fiber fabrics can the corresponding increase rate of recovery, and the electric energy that reclaims every mole of neat liquid consumption also reduces, and this experiment shows that this technology can be used for the quick recovery of the multiple VOC of air-flow.

When administering application waste gas, the waste gas of the little discharge capacity of high concentration employing firing method or charcoal absorption absorption method are more suitable; And from the paint spray booth, volatilization chamber and the drying chamber waste gas of discharging is big because of ventilation volume, wherein contained organic solvent concentration is extremely low, adopts charcoal absorption to concentrate a Production by Catalytic Combustion Process or liquid absorption method is administered for the waste gas of the big discharge capacity of this low concentration is suitable.Hollow fiber type film and silicone oil absorbent provide a kind of new thinking of development for liquid absorption method.Energising adds thermal desorption recovery organic solvent as adsorbing medium to adopt active carbon fiber fabrics, and organic solvent easy because of its operation and maintenance, desorption does not need to dewater, and is a kind of very promising method.But said method all exists in the application waste gas stickiness component easily with obstructions such as adsorbing medium, fillers and cause the problem that application waste gas pollution control and treatment system can't move, the operation maintenance workload is big, causes the application of said method in the application waste gas pollution control and treatment to be restricted.

Summary of the invention

The purpose of this invention is to provide a kind of device and method of administering waste gas.

The device that is used to administer waste gas provided by the invention, an eddy flow absorption tower and an end that comprise the adsorption liquid circulating slot, links to each other by pipeline with the described adsorption liquid circulating slot top absorber that the other end links to each other with leakage fluid dram that links to each other with top, described eddy flow absorption tower;

Described eddy flow absorption tower comprise tower body, at least one group of gas-liquid mixed swirl vane group that is arranged above and below, at least one group near the demist swirl vane group of gas outlet and be arranged on the gas-liquid mixed swirl vane group of top and described demist vane group between and pass the input duct that described eddy flow absorption tower sidewall links to each other with described adsorption liquid circulating slot; The two ends up and down on described eddy flow absorption tower are provided with admission line that communicates with the gas-liquid mixed swirl vane group that is positioned at lowermost end and the outlet pipe that communicates with described absorber respectively.

The above-mentioned device that is used for administering waste gas, described swirl vane group and demist vane group all are at least one deck, are preferably one to three group; Every group of described gas-liquid mixed swirl vane group formed by at least three blades, preferred three blades; Every group of described demist swirl vane group formed by at least three blades, preferred three blades.In practical operation, the number of plies of swirl vane can be adjusted according to the difference of Purge gas and required purification efficiency.In described swirl vane and the demist blade, diameter all less than the internal diameter of described tower body, can adjust according to actual needs by its concrete diameter.The effect of described swirl vane is that forced draft is rotated, because blade pitgh is bigger, can allow high velocity air to pass through, even the stickiness component bonds on blade, also be not enough to the gas passage between blocking blades, thereby can not cause equipment resistance is obviously raise, thereby guaranteed the normal operation of equipment because of equipment stops up.Being positioned at the described demist blade of described eddy flow absorption tower gas vent one side, also is a kind of in the swirl vane, can guarantee that the exhaust gas body has lower entrainment.

Used eddy flow absorption tower in this device, similar with Venturi tube on principle, but low more than the gas speed of Venturi tube trunnion by the perforate gas speed in swirl vane gap, so eddy flow absorption tower resistance is little, the pressure loss is low, easily realizes multistage absorption.Used eddy flow absorption tower is a kind of energy-efficient heat transfer, mass transfer apparatus, and entrainment is few, and plate pressure drop is low, and anti-blocking performance is good, easy operating.Its operation principle is as follows: gas by tower at the bottom of (or cat head) tower body tangential direction enter in the eddy flow absorption tower, along tower wall rotation rising (or decline), when crossing swirl vane, air communication produces rotation and centrifugal motion spiral rising (or decline), liquid is assigned to swirl vane from nozzle, on blade, form the film liquid layer, the air-flow that moves of being spinned stirs, and tears into fine drop, and making has very big contact area between gas-liquid.Driving drop in the air-flow rotary course rotates in tower, be subjected to action of centrifugal force, drop gets rid of to the tower wall and forms the pendular ring of rotation at the tower wall, and gravitate and flowing downward along the tower wall, converge in the groove at swirl vane liquid and to converge, after downspout is collected, send into down one deck swirl vane centre.Because air-flow rotational flow in tower, cause the pressure and the Ta Bi position in eddy flow tower centre to have Negative Pressure Difference, therefore, the upper strata swirl vane converges the interior liquid of groove after downspout flows down, be torn by the effect of Negative Pressure Difference and air-flow and atomizing once more in the tower body centre, give in the eddy flow tower huge gas-liquid contact area is provided, thereby promoted gas-liquid mass transfer, improved gas-liquid mass transfer efficient, guaranteed the purification efficiency of eddy flow tower, it has advantages such as load is higher, disposal ability is big, operating flexibility is big.

The effect of described absorber is the low concentration application waste gas that adsorption treatment is discharged by described eddy flow absorption tower.The inside of this absorber is filled with waste-gas adsorbant; The various adsorbents that can adsorb waste gas all are applicable to this absorber, at least a in preferred activated carbon fiber and the grain active carbon.Various absorbers commonly used all are applicable to this device, can choose according to actual needs.If application treatment of waste gas amount is less, this absorber can only be made up of adsorption chamber; If application treatment of waste gas amount is bigger, equipment volume is bigger, when the waste gas of discharging from the eddy flow absorption tower enters the purifier, have only this waste gas distributed uniform could be guaranteed good clean-up effect, thereby, can select the air inlet allocation set air chamber that is linked to each other by the outlet pipe with the eddy flow absorption tower, the absorber that adsorption chamber that links to each other with described air inlet allocation set air chamber and the allocation set air chamber of giving vent to anger that links to each other with leakage fluid dram are formed for use, wherein, the effect of described inlet, outlet allocation set air chamber is the air-flow that evenly distributes.Because behind the adsorbents adsorb adsorbate, its adsorption capacity will reduce gradually, in order to guarantee adsorption efficiency, the adsorbent that reply loses adsorption capacity regularly replaces, and the replacement cycle is 3~6 months.

In the said apparatus, also can comprise the circulating pump of being located on the described input duct, waste liquid pool that links to each other with described adsorption liquid circulating slot and the air blast that links to each other with described admission line.Wherein, described circulating pump can spray described adsorption liquid in described eddy flow absorption tower with certain pressure; Described waste liquid pool is used for being received in handles the inefficacy adsorption liquid that produces in the application waste gas process, and this waste liquid pool can be a water curtain circulatory pool system or a Waste Water Treatment, to guarantee the utilization again of inefficacy adsorption liquid; Described air blast is used to provide suitable application waste gas induction air flow ratio.In addition, overfall, water inlet, adsorption liquid outlet and the floss hole of regulating described adsorption liquid concentration can be set on the described adsorption liquid circulating slot.In device Installation and Debugging and normal course of operation, can regulate the sprinkle density of adsorption liquid in the described eddy flow absorption tower according to the exhaust gas concentration of absorber gas outlet, thereby make the purification efficiency of application waste gas reach the setting requirement.In addition, for reducing occupation area of equipment, described eddy flow absorption tower and described adsorption liquid circulating slot can be designed to integral type.

The device of above-mentioned improvement waste gas can be used for administering various waste gas, as the application waste gas of coating process generation.

The method of improvement application waste gas provided by the invention, comprise the steps: the described admission line that application waste gas is administered the device of waste gas by the invention described above being used to of providing is entered described eddy flow absorption tower, adsorption liquid enters described eddy flow absorption tower by described input duct, described application waste gas is by described swirl vane the time, under the effect of described gas-liquid mixed swirl vane group, make described application waste gas produce eddy flow, after described adsorption liquid fully mixes, discharge through described absorber, finish the improvement of described application waste gas.

In this method, described adsorption liquid is that water, mass percentage concentration are that sodium hydrate aqueous solution or the mass percentage concentration of 3-5% is the potassium hydroxide aqueous solution of 3-5%.

The invention solves and contain the system failure that causes because of stickiness component occluding device in the stickiness component application waste gas pollution control and treatment, reduce parking maintenance time and manpower and materials consumption former because of equipment thereby that cause, solved an absorption process waste gas pollution control and treatment difficult problem not up to standard simultaneously.This emission-control equipment SR is little, and energy consumption is low, and is reliable, safeguards simple.Utilize this device to carry out the application exhaust-gas treatment, the purification efficiency height can reach more than 85%, and gained gas reaches the requirement of national atmosphere pollutants emission standards fully after this device is handled.

Description of drawings

Fig. 1 is the process chart of improvement application waste gas provided by the invention, wherein, 1 ' be leakage fluid dram, 2 ' be absorber, 3 ' be outlet pipe, 4 ' be the eddy flow absorption tower, 5 ' be input duct, 6 ' be back liquid pipeline, 7 ' be the adsorption liquid circulating slot, 8 ' be circulating pump, 9 ' be admission line, 10 ' be air blast, 11 ' be waste gas, 12 ' be overflow pipe, 13 ' be waste liquid pool.

Fig. 2 is the internal structure schematic diagram on eddy flow absorption tower; Wherein, 1 is water inlet, and 2 is overfall, and 3 are the adsorption liquid outlet, and 4 is floss hole, and 5 are demist swirl vane group, and 6 is gas-liquid mixed swirl vane group.

The specific embodiment

The invention will be further described below in conjunction with specific embodiment, but the present invention is not limited to following examples.

Embodiment 1

The device that is used to administer application waste gas that this embodiment provides, comprise adsorption liquid circulating slot 7 ', the eddy flow absorption tower 4 that links to each other with described adsorption liquid circulating slot 7 ' top by pipeline ' with an end link to each other with 4 ' top, described eddy flow absorption tower the absorber 2 of the other end and leakage fluid dram 1 ' link to each other '; Described eddy flow absorption tower 4 ' comprise tower body, at least one group of gas-liquid mixed swirl vane group 6 that is arranged above and below, at least one group near outlet pipe 3 ' demist swirl vane group 5 and be arranged on the gas-liquid mixed swirl vane group 6 of top and described demist vane group 5 between and pass the input duct 5 of described eddy flow absorption tower 4 ' sidewall and described adsorption liquid circulating slot 7 ' link to each other '; Described eddy flow absorption tower 4 ' two ends up and down be provided with respectively the admission line 9 that communicates with the gas-liquid mixed swirl vane group 6 that is positioned at lowermost end ' and outlet pipe 3 of communicating with described absorber '.In this device, described gas-liquid mixed swirl vane group is two groups; Described demist swirl vane group is one group; Every group of gas-liquid mixed swirl vane group formed by three blades; Every group of described demist swirl vane group formed by three blades; The inside of described absorber is filled with grain active carbon.This device also comprise be located at described adsorption liquid circulating slot 7 ' with described input duct 2 on circulating pump 8 ', with the waste liquid pool 13 of described adsorption liquid circulating slot 7 ' link to each other ' and with the air blast 10 of described admission line 9 ' link to each other '.In addition, water inlet 1, overfall 2, adsorption liquid outlet 3 and the floss hole 4 of regulating described adsorption liquid concentration is set on the described adsorption liquid circulating slot.

The external diameter on this eddy flow absorption tower is 2200mm, and height overall is 95000mm; Air communication is crossed the pressure loss that this eddy flow absorption tower produces, and promptly equipment resistance is set to 1000-1200Pa.

Carry out the application treatment of waste gas according to flow process shown in Figure 1: with volatile organic matter (VOCs) concentration is 500mg/m 3Stickiness application waste gas, deliver to the device of above-mentioned improvement application waste gas by blower fan, by the admission line 9 of this device ' enter above-mentioned eddy flow absorption tower 4 ', by described gas-liquid mixed swirl vane group 6 time, described application off-gas flows produces eddy flow under the effect of described gas-liquid mixed swirl vane group, described application waste gas and mass percentage concentration by described input duct 5 ' spray are that 5% sodium hydrate aqueous solution adsorption liquid fully mixes, through described absorber 2 ' discharge, finish the improvement of described application waste gas.

Utilize this device to handle application waste gas, the concentration of volatile organic matter (VOCs) is 75mg/m in the gas of being discharged by described absorber 3, purification efficiency is 85%.

Embodiment 2

The device that is used to administer application waste gas that this embodiment provides, comprise adsorption liquid circulating slot 7 ', the eddy flow absorption tower 4 that links to each other with described adsorption liquid circulating slot 7 ' top by pipeline ' with an end link to each other with 4 ' top, described eddy flow absorption tower the absorber 2 of the other end and leakage fluid dram 1 ' link to each other '; Described eddy flow absorption tower 4 ' comprise tower body, at least one group of gas-liquid mixed swirl vane group 6 that is arranged above and below, at least one group near outlet pipe 3 ' demist swirl vane group 5 and be arranged on the gas-liquid mixed swirl vane group 6 of top and described demist vane group 5 between and pass the input duct 5 of described eddy flow absorption tower 4 ' sidewall and described adsorption liquid circulating slot 7 ' link to each other '; Described eddy flow absorption tower 4 ' two ends up and down be provided with respectively the admission line 9 that communicates with the gas-liquid mixed swirl vane group 6 that is positioned at lowermost end ' and outlet pipe 3 of communicating with described absorber '.In this device, described gas-liquid mixed swirl vane group is two groups; Described demist swirl vane group is one group; Every group of gas-liquid mixed swirl vane group formed by three blades; Every group of described demist swirl vane group formed by three blades; The inside of described absorber is filled with grain active carbon.This device also comprise be located at described adsorption liquid circulating slot 7 ' with described input duct 2 on circulating pump 8 ', with the waste liquid pool 13 of described adsorption liquid circulating slot 7 ' link to each other ' and with the air blast 10 of described admission line 9 ' link to each other '.In addition, water inlet 1, overfall 2, adsorption liquid outlet 3 and the floss hole 4 of regulating described adsorption liquid concentration is set on the described adsorption liquid circulating slot.

The external diameter on this eddy flow absorption tower is 2200mm, and height overall is 95000mm; Air communication is crossed the pressure loss that this eddy flow absorption tower produces, and promptly equipment resistance is set to 1000-1200Pa.

Carry out the application treatment of waste gas according to flow process shown in Figure 1: with volatile organic matter (VOCs) concentration is 1000mg/m 3Stickiness application waste gas, deliver to the device of above-mentioned improvement application waste gas by blower fan, by the admission line 9 of this device ' enter above-mentioned eddy flow absorption tower 4 ', by described gas-liquid mixed swirl vane group 6 time, described application off-gas flows produces eddy flow under the effect of described gas-liquid mixed swirl vane group, described application waste gas and mass percentage concentration by described input duct 5 ' spray are that 3% sodium hydrate aqueous solution adsorption liquid fully mixes, discharge through described absorber, finish the improvement of described application waste gas.

Utilize this device to handle application waste gas, the concentration of volatile organic matter (VOCs) is 11mg/m in the gas of being discharged by described absorber 3, purification efficiency is 90%.

Embodiment 3

The device that is used to administer application waste gas that this embodiment provides, comprise adsorption liquid circulating slot 7 ', the eddy flow absorption tower 4 that links to each other with described adsorption liquid circulating slot 7 ' top by pipeline ' with an end link to each other with 4 ' top, described eddy flow absorption tower the absorber 2 of the other end and leakage fluid dram 1 ' link to each other '; Described eddy flow absorption tower 4 ' comprise tower body, at least one group of gas-liquid mixed swirl vane group 6 that is arranged above and below, at least one group near outlet pipe 3 ' demist swirl vane group 5 and be arranged on the gas-liquid mixed swirl vane group 6 of top and described demist vane group 5 between and pass the input duct 5 of described eddy flow absorption tower 4 ' sidewall and described adsorption liquid circulating slot 7 ' link to each other '; Described eddy flow absorption tower 4 ' two ends up and down be provided with respectively the admission line 9 that communicates with the gas-liquid mixed swirl vane group 6 that is positioned at lowermost end ' and outlet pipe 3 of communicating with described absorber '.In this device, described gas-liquid mixed swirl vane group is two groups; Described demist swirl vane group is one group; Every group of gas-liquid mixed swirl vane group formed by three blades; Every group of described demist swirl vane group formed by three blades; The inside of described absorber is filled with grain active carbon.This device also comprise be located at described adsorption liquid circulating slot 7 ' with described input duct 2 on circulating pump 8 ', with the waste liquid pool 13 of described adsorption liquid circulating slot 7 ' link to each other ' and with the air blast 10 of described admission line 9 ' link to each other '.In addition, water inlet 1, overfall 2, adsorption liquid outlet 3 and the floss hole 4 of regulating described adsorption liquid concentration is set on the described adsorption liquid circulating slot.

The external diameter on this eddy flow absorption tower is 2200mm, and height overall is 95000mm; Air communication is crossed the pressure loss that this eddy flow absorption tower produces, and promptly equipment resistance is set to 1000-1200Pa.

Carry out the application treatment of waste gas according to flow process shown in Figure 1: with volatile organic matter (VOCs) concentration is 800mg/m 3Stickiness application waste gas, deliver to the device of above-mentioned improvement application waste gas by blower fan, by the admission line 9 of this device ' enter above-mentioned eddy flow absorption tower 4 ', by described gas-liquid mixed swirl vane group 6 time, described application off-gas flows produces eddy flow under the effect of described gas-liquid mixed swirl vane group, described application waste gas and mass percentage concentration by described input duct 5 ' spray are that 5% potassium hydroxide aqueous solution adsorption liquid fully mixes, discharge through described absorber, finish the improvement of described application waste gas.

Utilize this device to handle application waste gas, the concentration of volatile organic matter (VOCs) is 80mg/m in the gas of being discharged by described absorber 3, purification efficiency is 89%.

Claims (10)

1. device that is used to administer waste gas, an eddy flow absorption tower and an end that comprise the adsorption liquid circulating slot, links to each other by pipeline with described adsorption liquid circulating slot top absorber that the other end links to each other with leakage fluid dram that links to each other with top, described eddy flow absorption tower;
Described eddy flow absorption tower comprise tower body, at least one group of gas-liquid mixed swirl vane group that is arranged above and below, at least one group near the demist swirl vane group of gas outlet and be arranged on the gas-liquid mixed swirl vane group of top and described demist vane group between and pass the input duct that described eddy flow absorption tower sidewall links to each other with described adsorption liquid circulating slot; The two ends up and down on described eddy flow absorption tower are provided with admission line that communicates with the gas-liquid mixed swirl vane group that is positioned at lowermost end and the outlet pipe that communicates with described absorber respectively.
2. device according to claim 1 is characterized in that: described gas-liquid mixed swirl vane group is one to three group; Described demist swirl vane group is one to three group.
3. device according to claim 1 and 2 is characterized in that: every group of described gas-liquid mixed swirl vane group formed by at least three blades; Every group of described demist swirl vane group formed by at least three blades.
4. according to the arbitrary described device of claim 1-3, it is characterized in that: the inside of described absorber is filled with waste-gas adsorbant; Described adsorbent is selected from least a in activated carbon fiber and the grain active carbon.
5. according to the arbitrary described device of claim 1-4, it is characterized in that: the described device that is used to administer waste gas also comprises the circulating pump of being located on the described input duct.
6. according to the arbitrary described device of claim 1-5, it is characterized in that: overfall, water inlet, adsorption liquid outlet and the floss hole of regulating described adsorption liquid concentration are set on the described adsorption liquid circulating slot.
7. according to the arbitrary described device of claim 1-6, it is characterized in that: the described device that is used to administer waste gas also comprises the waste liquid pool that links to each other with described adsorption liquid circulating slot.
8. according to the arbitrary described device of claim 1-7, it is characterized in that: the described device that is used to administer waste gas also comprises the air blast that links to each other with described admission line.
9. method of administering application waste gas, comprise the steps: application waste gas is entered described eddy flow absorption tower by the arbitrary described described admission line that is used to administer the device of waste gas of claim 1-8, adsorption liquid enters described eddy flow absorption tower by described input duct, described application waste gas is by described gas-liquid mixed swirl vane group the time, under the effect of described swirl vane, make described application waste gas produce eddy flow, after described adsorption liquid fully mixes, discharge through described absorber, finish the improvement of described application waste gas.
10. method according to claim 9 is characterized in that: described adsorption liquid is that water, mass percentage concentration are that sodium hydrate aqueous solution or the mass percentage concentration of 3-5% is the potassium hydroxide aqueous solution of 3-5%.
CN201010103661A 2010-01-29 2010-01-29 Device and method for controlling waste gas CN101732943A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102179137A (en) * 2011-05-05 2011-09-14 艾特克控股集团有限公司 Method for treating organic waste gas
CN102462974A (en) * 2010-11-09 2012-05-23 萍乡市飞虎炭黑有限公司 Waste gas treatment facility, device and method
CN102652894A (en) * 2012-04-19 2012-09-05 江苏亚洲气体设备有限公司 Acid-base tail gas recycling device
CN105107348A (en) * 2015-09-10 2015-12-02 杭州正清环保科技有限公司 Multiphase strong-oxygen catalytic reaction complete equipment for treating VOC organic waste gas
CN105944503A (en) * 2016-06-23 2016-09-21 华南理工大学 Online cyclic regeneration organic waste gas treatment method and device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102462974A (en) * 2010-11-09 2012-05-23 萍乡市飞虎炭黑有限公司 Waste gas treatment facility, device and method
CN102179137A (en) * 2011-05-05 2011-09-14 艾特克控股集团有限公司 Method for treating organic waste gas
CN102652894A (en) * 2012-04-19 2012-09-05 江苏亚洲气体设备有限公司 Acid-base tail gas recycling device
CN105107348A (en) * 2015-09-10 2015-12-02 杭州正清环保科技有限公司 Multiphase strong-oxygen catalytic reaction complete equipment for treating VOC organic waste gas
CN105107348B (en) * 2015-09-10 2018-07-03 杭州正清环保科技有限公司 It is a kind of to react complete set of equipments for handling the strong oxygen catalysis of the multiphase of VOC organic exhaust gas
CN105944503A (en) * 2016-06-23 2016-09-21 华南理工大学 Online cyclic regeneration organic waste gas treatment method and device
WO2017219623A1 (en) * 2016-06-23 2017-12-28 华南理工大学 Online cyclic regeneration organic waste gas treatment method and device
CN105944503B (en) * 2016-06-23 2018-06-22 华南理工大学 A kind of online circular regeneration organic waste gas treatment method and device

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