CN104436893B - A kind of paint spray booth waste gas purification electricity generation system - Google Patents
A kind of paint spray booth waste gas purification electricity generation system Download PDFInfo
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- CN104436893B CN104436893B CN201410744087.3A CN201410744087A CN104436893B CN 104436893 B CN104436893 B CN 104436893B CN 201410744087 A CN201410744087 A CN 201410744087A CN 104436893 B CN104436893 B CN 104436893B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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Abstract
The invention provides a kind of paint spray booth waste gas purification electricity generation system, including pre-processing module, exhaust-gas treatment electricity generation module and fume treatment module, the waste gas that described paint spray booth produces is transported to exhaust-gas treatment electricity generation module after being processed by pre-processing module, the electric energy that described exhaust-gas treatment electricity generation module produces transmits to electrical network, produced flue gas is used to drying chamber by fume treatment resume module, the hot-air transmission that it produces.Utilize the energy generating that burning produces, and the flue gas of discharge is delivered to after treatment paint spray booth's waste gas purification electricity generation system that drying chamber uses.The present invention solves the technical problem of the aspects such as paint spray booth's waste gas purification apparatus wide usage is poor, and economy is not good enough, and technology upgrading transformation property is poor, and maintenance of clean-up is inconvenient simultaneously.
Description
Technical field
The present invention relates to a kind of paint spray booth waste gas purification electricity generation system, it is adaptable to automobile coating production line apparatus field.
Background technology
The large-wind-volume low-concentration VOC waste gas that Painting Shop paint spray booth produces typically at high temperature carries out decomposing oxidation processes after adsorption runner system concentrates.When using direct combustion method to process, fuel consumption is relatively big, and the heat part discharged in combustion process is for preheating concentration waste gas, and the flue gas of discharge produces hot water, hot-air by heat exchanger, and the rate of recovery is the highest, reclaims product recycling scope little.When using regenerative combustion furnace to process, in combustion process, the heat of release is mainly used in preheating VOC concentration waste gas, and therefore Fuel Consumption is low, and delivery temperature is typically at 140 DEG C～200 DEG C, and the effect utilizing heat exchanger Mist heat recovering is undesirable.All there is following shortcoming in above two method: 1. the heat energy that burning produces is mostly used in and concentrates preheating of waste gas.2. flue gas waste heat recovery product is hot water, hot-air, and range is little, and conveying need to set up special pipeline.3. the flue gas after heat exchange utilizes without secondary recovery and is discharged directly into air.
Summary of the invention
Solved by the invention technical problem is that, process, by combustion method, the VOC waste gas that paint spray booth discharges, the heat discharged in combustion process is for generating electricity for Painting Shop, and the high-temperature flue gas of discharge provides after treatment to drying chamber use.
In order to solve above-mentioned technical problem, the technical solution adopted in the present invention is:
A kind of paint spray booth waste gas purification electricity generation system, including pre-processing module, exhaust-gas treatment electricity generation module and fume treatment module, the waste gas that described paint spray booth produces is transported to exhaust-gas treatment electricity generation module after being processed by pre-processing module, the electric energy that described exhaust-gas treatment electricity generation module produces transmits to electrical network, produced flue gas is used to drying chamber by fume treatment resume module, the hot-air transmission that it produces.
Above-mentioned pre-processing module includes exhaust gas fan, filter, adsorption runner, the waste gas containing VOC that described paint spray booth discharges pressurizes through exhaust gas fan, it is delivered to filter, after filter removes bulky grain coating cloud, dust, to adsorption runner, exhaust gas concentration is concentrated 3～20 times, cleaned waste gas directly discharges, and concentrates waste gas and continues module conveying backward.
Above-mentioned exhaust-gas treatment electricity generation module includes Gas Turbine Generating Units, multistage compressor, cleaning device, the concentration waste gas that described pre-processing module produces transmits to gas-turbine combustion chamber after first passing through compressor compression, the HTHP that described Gas Turbine Generating Units is produced by combustion chamber purifies waste gas, is partially converted into the most stable alternating current for Painting Shop.
Above-mentioned exhaust-gas treatment electricity generation module includes multistage compressor, direct-fired waste gas burning stove, smoke gas turbine, threephase alternator, rectifier, storage battery, combining inverter；Described direct-fired waste gas combustion furnace burning waste gas and fuel, pollutant in high-temperature oxydation waste gas decomposition, the flue gas produced exports mechanical power by smoke gas turbine, own temperature drops to 600 DEG C of posteriorly module conveyings from more than 900 DEG C, smoke gas turbine drives threephase alternator to produce the alternating current of irregular frequency, irregular frequency alternating current is converted to direct current and is stored in storage battery by rectified device, then is converted to electrical network same frequency, synchronous sine-wave current input electrical network direct current for Painting Shop through combining inverter.
Above-mentioned fume treatment module includes heat exchanger, and the flue gas that described exhaust-gas treatment electricity generation module produces passes through heat exchanger heating, drying room air for drying chamber；When drying chamber is indirect heating type, after heat exchange, flue gas is directly discharged into air or is processed together by drying chamber flue gas processing device.
Above-mentioned fume treatment module also includes filter, when drying chamber is direct-heating type, after heat exchanger heat exchange flue gas through filter process after with hot-air for drying chamber.
Controlled by the rotating speed of compressor, control paint spray booth's thickened waste throughput at 15000m3/ h～50000m3In the range of/h adjustable, in pipeline, gas is Laminar Flow, it is to avoid high velocity turbulent flow conveying time produce noise.
The invention has the beneficial effects as follows: the invention provides the generating of a kind of energy utilizing burning to produce, and the flue gas of discharge is delivered to after treatment paint spray booth's waste gas purification electricity generation system that drying chamber uses.The present invention solves the technical problem of the aspects such as paint spray booth's waste gas purification apparatus wide usage is poor, and economy is not good enough, and technology upgrading transformation property is poor, and maintenance of clean-up is inconvenient simultaneously.
Accompanying drawing explanation
Fig. 1 is the architecture system block diagram of the present invention；
Fig. 2 is the system block diagram of the pre-processing module of the present invention；
Fig. 3 is the system block diagram of the exhaust-gas treatment electricity generation module of the present invention；
Fig. 4 is the system block diagram of the another kind of exhaust-gas treatment electricity generation module of the present invention；
Fig. 5 is the system block diagram of the fume treatment module of the present invention；
Fig. 6 is the system block diagram of the another kind of fume treatment module of the present invention；
Fig. 7 is the architecture system block diagram of embodiment.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention is further illustrated.
As shown in Figure 1, a kind of paint spray booth waste gas purification electricity generation system, including pre-processing module, exhaust-gas treatment electricity generation module and fume treatment module, the waste gas that described paint spray booth produces is transported to exhaust-gas treatment electricity generation module after being processed by pre-processing module, the electric energy that described exhaust-gas treatment electricity generation module produces transmits to electrical network, produced flue gas is used to drying chamber by fume treatment resume module, the hot-air transmission that it produces.
As shown in Figure 2, above-mentioned pre-processing module includes exhaust gas fan, filter, adsorption runner, the waste gas containing VOC that described paint spray booth discharges pressurizes through exhaust gas fan, it is delivered to filter, after filter removes bulky grain coating cloud, dust, to adsorption runner, exhaust gas concentration being concentrated 3～20 times, cleaned waste gas directly discharges, and concentrates waste gas and continues module conveying backward.
As shown in Figure 3, above-mentioned exhaust-gas treatment electricity generation module includes Gas Turbine Generating Units, cleans device, multistage compressor, the concentration waste gas that described pre-processing module produces transmits to Gas Turbine Generating Units after first passing through compressor compression, the HTHP that described Gas Turbine Generating Units is produced by combustion chamber purifies waste gas, is partially converted into the most stable alternating current for Painting Shop.
As shown in Figure 4, above-mentioned exhaust-gas treatment electricity generation module includes direct-fired waste gas burning stove, smoke gas turbine, threephase alternator, rectifier, storage battery, combining inverter；Described direct-fired waste gas combustion furnace burning waste gas and fuel, pollutant in high-temperature oxydation waste gas decomposition, the flue gas produced exports mechanical power by smoke gas turbine, own temperature drops to 600 DEG C of posteriorly module conveyings from more than 900 DEG C, smoke gas turbine drives threephase alternator to produce the alternating current of irregular frequency, irregular frequency alternating current is converted to direct current and is stored in storage battery by rectified device, then is converted to electrical network same frequency, synchronous sine-wave current input electrical network direct current for Painting Shop through combining inverter.
As it is shown in figure 5, above-mentioned fume treatment module includes heat exchanger, the flue gas that described exhaust-gas treatment electricity generation module produces passes through heat exchanger heating, drying room air for drying chamber；When drying chamber is indirect heating type, after heat exchange, flue gas is directly discharged into air or is processed together by drying chamber flue gas processing device.
As shown in Figure 6, above-mentioned fume treatment module also includes filter, when drying chamber is direct-heating type, after heat exchanger heat exchange flue gas through filter process after with hot-air for drying chamber.
Preferably, the pipeline of above-mentioned modules selects DN800～DN1600, is controlled by the rotating speed of compressor, it is ensured that paint spray booth's exhaust gas flow is at 15000m3/ h～100000m3In the range of/h during change, in pipeline, gas is Laminar Flow, it is to avoid the noise produced during high velocity turbulent flow conveying.
Embodiment:
As it is shown in fig. 7, paint spray booth's waste gas is filtered to remove bulky grain dust, dust and bigger coating cloud group through exhaust gas fan 1 pressurized delivered to filter 2 is delivered to adsorption runner 3.Adsorption runner 3 is adsorbed by normal temperature, elevated temperature desorption process, and the waste gas that major part absorption removes pollutant is directly discharged into air, and fraction is through the heated elevated temperature desorption that carries out adsorption runner of the waste gas of adsorption process, and is delivered to Gas Turbine Generating Units 4.Exhaust gas concentration is improved 3～20 times by adsorption runner, need to process dusty gas simultaneously and be reduced to 1/3～1/20.
Concentrating waste gas and entering gas-turbine combustion chamber through multistage compressor, combustion chamber sprays into natural gas or diesel fueled combustion.Concentrate waste gas combustion chamber high temperature oxidation Decomposition in Gas Turbine Generating Units 4, produce the high-temperature flue gas of more than about 900 DEG C.High-temperature flue gas drives the operating of generator by power turbine output mechanical power.Rectifier, the equipment such as inverter that the irregular frequency alternating current produced carries through Gas Turbine Generating Units 4 are converted to electrical network same frequency, synchronous sine-wave current input electrical network for Painting Shop.High-temperature flue gas is after multistage turbine, and temperature is reduced to 600 DEG C by more than 900 DEG C and is delivered to heat exchanger 7 through flue gas pipeline.When concentrating waste gas with natural gas ratio deficiency, combustion fan 5 input combustion air and ensure that Gas Turbine Generating Units runs well.Cleaning device 6 is set simultaneously, for the daily cleaning maintenance of Gas Turbine Generating Units.
The fresh air of 20 DEG C carries out heat exchange through the anterior 600 DEG C of flue gases produced of heat exchanger 7, and the hot-air producing 120～180 DEG C is delivered to drying chamber use, and the flue gas after heat exchange is discharged directly into air.
The present invention has the advantage that
One, good upgrading.The present invention can be used for the transformation of existing all types of paint spray booths emission-control equipment, improves the heat energy recycle effect produced in processing procedure.Existing paint spray booth exhaust-gas treatment mainly uses adsorption runner+direct burning and two kinds of processing modes of adsorption runner+heat storage type combustion.
Use the occasion that adsorption runner+directly combustion system processes, only need to increase the smoke gas turbine TRT driving generating set with smoke gas turbine after direct-fired combustion furnace.Algorithm Stability of Gas Turbine Performance after direct-fired combustion furnace becomes to meet the fume treatment module of drying chamber mode of heating, and improvement expenses, cycle are relatively low.
In the occasion using adsorption runner+heat storage type combustion to process, regenerative combustion furnace exit gas temperature is generally 140 DEG C～200 DEG C, it is impossible to provide the suitable hot-air/flue gas of temperature to drying chamber while generating.
Drive the low pressure expansion turbine TRT of generating set according to low pressure expansion turbine, flue-gas temperature can be down to less than 100 DEG C, suitably be directly discharged into air, can be saved part heat exchanger and pipeline.
According to fume treatment module, can reduce for drying chamber insulation, intensification hot air flowrate, reduce fuel usage amount.And the exhaust apparatus of regenerative combustion furnace can be cancelled, utilize drying chamber or the discharge of remaining exhaust apparatus of workshop.
Two, good stain resistance, outstanding clean and maintenance.In paint spray booth's waste gas, equipment is easily polluted by coating cloud.Coating cloud is attached to metal surface, toasts through 120～200 DEG C of temperature 10～20min by coating type is different, i.e. forms enamelled coating and be firmly attached to metal surface, it is difficult to uses physical means cleaning.Even if at normal temperatures, after experiencing long-time natural air drying, coating is dry and hard in equipment surface, removes difficulty.
In pre-processing module, filter can use dry filter bag or other can simple easily changeable filter, also can set up coating cloud filter cotton reduce enter subsequent module coating cloud concentration.Adsorption runner has good recyclability, can effective regeneration at 300 DEG C.The gas channel of adsorption runner honeycomb has bigger circulation area, still can effectively work in the case of being attached with a small amount of coating cloud.
In exhaust-gas treatment electricity generation module, TRT, rectifier, inverter do not contact with containing gases with pollution exhaust gas contact, only gas turbine/direct-fired combustion furnace.
Modern industry gas turbine many employings air inlet volute air inlet, is equipped with multi stage axial flow compressor compressed air, and 1～2 grade of gas turbine drives compressor operating, and turbine flow is used for exporting mechanical power.After waste gas enters air inlet volute, coating cloud can impact air inlet volute inner surface because of centrifugal action, sticks on air inlet volute.It is equipped with employing stainless steel or the guider on titanium alloy fine processing polished stator blade surface before axial flow compressor rotors at different levels, is used for regulating inlet air flow velocity attitude.Coating cloud is at first order guider, and because air velocity is relatively low, the gas channel distortion that stator blade is formed changes greatly, and may adsorb on first order guider stator blade.During normal work, axial flow compressor rotor rotating speed is 5000～9000r/min, and after first order shaft flow rotor, air velocity is substantially improved, and coating cloud cannot stop.After coating cloud enters combustion chamber with waste gas, the coating cloud being mainly composed of various types of resins is i.e. decomposed into all kinds of gas and water at 600 DEG C.
Industrial gas turbine is equipped with cleaning bypass, controls opening and closing by butterfly valve.When cleaning bypass unlatching, gas turbine cuts off gas inlet pipeline and fuel conduit, cleans device and pumps into cleaning agent to gas turbine, starts driven by motor gas turbine blowdown firing, inside cleaning gas turbine, clean the waste water produced and discharged from bottom by discharge of gas turbine valve.Air inlet volute dismounting is simple, it is simple to clean.Axial flow compressor guider material is special, smooth surface, and it is easy to fall off that coating cloud forms enamelled coating, and gas turbine pumps into cleaning agent blowdown firing and cleans and can effectively remove.
Direct-fired combustion furnace has good stain resistance and self-cleaning, it is not necessary to the most complicated clean and maintenance program.
Smoke gas turbine carries programme controlled water mist sprinkling formula and cleans device, can shower water or cleaning agent be used for cleaning turbo blade and internal cavity.
Three, economy.The present invention utilizes waste gas to generate electricity, and flue gas burning produced provides to drying chamber, had both decreased electric energy spending, and can reduce again drying chamber fuel consumption.
With paint spray booth waste gas air quantity 30000 m after pretreating device concentrates3/ h, wherein VOC pollutant levels are 2500mg/m3, the typical automotive Painting Shop of VOC pollutant calorific value 43500KJ/kg calculates.Drying chamber and waste gas generating processing module are with natural gas as fuel, and density is 0.7174kg/m3, calorific value is 36000KJ/m3.When using with Gas Turbine Generating Units process waste gas, Gas Turbine Generating Units generating efficiency takes 28%(and is generally 25%～35%), the loss of the rectified device of electric current is 5%, and during inverter switching current, loss is 10%.
Not increasing extra combustion air, only in the case of burning paint spray booth waste gas, general employing natural gas ensures to burn completely with the mixed proportion of combustion air ratio 1:10, therefore gas consumption measures 3000 m3/h.Exhaust-gas treatment TRT generated output W is:
W=(43500 × 0.001 × 30000+3000 × 36000 × 0.7174) × 0.35 × 0.95 × 0.9 ÷ 3600=5239.1kW
As a example by Jiangsu Province, Gas Prices is now 2.2 yuan every cubic metre, is computed about 1 yuan of every kilowatt hour of exhaust-gas treatment TRT electricity price, lower by 10% than 1.1 yuan of every kilowatt hours of electricity price for industrial uses.
Exhaust-gas treatment TRT produces temperature 600 DEG C, air quantity 33000m3The flue gas of/h.When drying chamber uses indirect heating manner, heat exchanger heat exchange efficiency takes 95%, flue-gas temperature 200 DEG C after heat exchange, fresh air inlet temperature 20 DEG C, outlet temperature 160 DEG C calculating, can produce 87600 m3/ h hot-air, reduces gas consumption 350 m3/h。
The general principle of the present invention and principal character and advantages of the present invention have more than been shown and described.Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; the principle that the present invention is simply described described in above-described embodiment and specification; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements both fall within scope of the claimed invention.Claimed scope is defined by appending claims and equivalent thereof.
Claims (4)
1. paint spray booth's waste gas purification electricity generation system, it is characterized in that: include pre-processing module, exhaust-gas treatment electricity generation module and fume treatment module, the waste gas that described paint spray booth produces is transported to exhaust-gas treatment electricity generation module after being processed by pre-processing module, the electric energy that described exhaust-gas treatment electricity generation module produces transmits to electrical network, produced flue gas is used to drying chamber by fume treatment resume module, the hot-air transmission that it produces；
Described exhaust-gas treatment electricity generation module includes multistage compressor, direct-fired waste gas burning room, smoke gas turbine, threephase alternator, rectifier, storage battery, combining inverter；Described direct-fired burned waste gas room burning waste gas and fuel, pollutant in high-temperature oxydation waste gas decomposition, the flue gas produced exports mechanical power by smoke gas turbine, own temperature drops to 600 DEG C of posteriorly module conveyings from more than 900 DEG C, smoke gas turbine drives threephase alternator to produce the alternating current of irregular frequency, irregular frequency alternating current is converted to direct current and is stored in storage battery by rectified device, then is converted to electrical network same frequency, synchronous sine-wave current input electrical network direct current for Painting Shop through combining inverter.
Paint spray booth the most according to claim 1 waste gas purification electricity generation system, it is characterized in that: described pre-processing module includes exhaust gas fan, filter, adsorption runner, the waste gas containing VOC that described paint spray booth discharges pressurizes through exhaust gas fan, it is delivered to filter, after filter removes bulky grain coating cloud, dust, to adsorption runner, exhaust gas concentration being concentrated 3～20 times, cleaned waste gas directly discharges, and concentrates waste gas and continues module conveying backward.
Paint spray booth the most according to claim 1 waste gas purification electricity generation system, it is characterised in that: described fume treatment module includes heat exchanger, and the flue gas that described exhaust-gas treatment electricity generation module produces passes through heat exchanger heating, drying room gas for drying chamber；When drying chamber is indirect heating type, after heat exchange, flue gas is directly discharged into air or is processed together by drying chamber flue gas processing device；Described fume treatment module also includes filter, when drying chamber is direct-heating type, after heat exchanger heat exchange flue gas through filter process after with hot-air for drying chamber.
Paint spray booth the most according to claim 1 waste gas purification electricity generation system, it is characterised in that: controlled by the rotating speed of compressor, control paint spray booth's thickened waste throughput at 15000m3/ h～50000m3In the range of/h adjustable, in pipeline, gas is Laminar Flow, it is to avoid high velocity turbulent flow conveying time produce noise.
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| CN105937446A (en) * | 2016-05-27 | 2016-09-14 | 大连派思新能源发展有限公司 | Distributive energy system applied to dye industry |
| CN106178750B (en) * | 2016-08-09 | 2019-04-19 | 海宁兄弟家具有限公司 | Furniture spray painting cleaning equipment with air supply device |
| CN107519711A (en) * | 2017-10-10 | 2017-12-29 | 永康市恒久涂装设备有限公司 | Toast organic exhaust gas heat energy recycling device |
| CN107917433A (en) * | 2017-11-22 | 2018-04-17 | 苏州克兰茨环境科技有限公司 | A kind of Microturbine organic waste gas treatment device |
| CN108870419A (en) * | 2018-05-21 | 2018-11-23 | 沧州鸿泰通风净化设备安装有限公司 | A kind of lacquer spraying waste gas abatement equipment and method |
| CN109663457A (en) * | 2019-02-21 | 2019-04-23 | 成都净天科技有限公司 | A kind of safe purification system of VOC and its purification method of low cost |
| CN111773880A (en) * | 2020-07-31 | 2020-10-16 | 深圳中科环保产业发展有限公司 | VOC waste gas treatment process and treatment equipment thereof |
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| US7442231B2 (en) * | 2004-08-23 | 2008-10-28 | Syntroleum Corporation | Electricity generation system |
| JP2007177779A (en) * | 2005-12-26 | 2007-07-12 | Nippon Dengi Kk | Treatment method for volatile organic compound (voc gas) |
| CN202224048U (en) * | 2011-09-14 | 2012-05-23 | 中冶赛迪工程技术股份有限公司 | Sintering flue gas treatment device |
| CN202883123U (en) * | 2012-11-21 | 2013-04-17 | 中国平煤神马集团平顶山朝川焦化有限公司 | Direct-fired power generation system of coke oven gas |
| CN203744273U (en) * | 2014-03-31 | 2014-07-30 | 青州市鑫通沥青科技有限公司 | Industrial waste gas treatment system |
| CN204319961U (en) * | 2014-12-09 | 2015-05-13 | 江苏骠马智能装备股份有限公司 | A kind of paint spray booth waste gas purification electricity generation system |
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