CN202876599U - Purifying device of asphalt waste gas - Google Patents

Purifying device of asphalt waste gas Download PDF

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Publication number
CN202876599U
CN202876599U CN 201220525936 CN201220525936U CN202876599U CN 202876599 U CN202876599 U CN 202876599U CN 201220525936 CN201220525936 CN 201220525936 CN 201220525936 U CN201220525936 U CN 201220525936U CN 202876599 U CN202876599 U CN 202876599U
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CN
China
Prior art keywords
waste gas
pitch
waste
pipe
purification apparatus
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CN 201220525936
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Chinese (zh)
Inventor
裴登明
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裴登明
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Priority to CN 201220525936 priority Critical patent/CN202876599U/en
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Publication of CN202876599U publication Critical patent/CN202876599U/en

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Abstract

The utility model discloses a purifying device of asphalt waste gas. The purifying device comprises a shell, an exhaust inlet, a centrifugal separation section, a filter, a spray thrower, a condensate pipe, an electroplate and an exhaust pipeline, wherein the exhaust inlet, the centrifugal separation section, the filter, the spray thrower, the condensate pipe, the electroplate and the exhaust pipeline are orderly and fixedly connected to the shell along a flow direction of airflow; a spraying pipeline is connected with the spray thrower; a mechanical waste oil tank is arranged at the lower part of the shell; mechanical waste oil is stored inside the mechanical waste oil tank; a circulating oil pump is arranged at one side of the mechanical waste oil tank and is connected with the spraying pipeline; a suction pipe, a water supply pump and an exhaust pipe are connected with the condensate pipe; one end of the condensate pipe is connected with the suction pipe via the water supply pump; the other end of the condensate pipe is connected with the exhaust pipe; and an emptying pipe and a draw-off pipe are arranged below the shell. The purifying device applies a cooling condensate technology, a physical separating technology and a low-temperature plasma technology, and can rapidly, efficiently and thoroughly purify greasy dirt, mist, dust particle, harmful gas, bacterium, germs, peculiar smell and the like in the asphalt smoke in the asphalt waste gas, so that standard gas can be discharged. The purifying device of the asphalt waste gas achieves four targets, namely, asphalt tar recovery, low-cost operation of waste control by waste, afterheat recovery to supply hot water, and asphalt waste gas purification.

Description

A kind of purifier of pitch waste gas

Technical field

The utility model relates to exhaust gas treatment technology, relates in particular to a kind of purification method and device thereof of pitch waste gas.

Background technology

Pitch is by the pitchy complex mixture that hydrocarbon and the nonmetal derivative thereof of different molecular weight forms, and is in a liquid state, semisolid or solid-state.Mainly be divided into bitumen, asphalt, shale tar pitch and coal tar asphalt.Pitch much is being widely used in the industries because its product property is stable, high temperature resistant, flammable, such as carbon fiber, exotic material, anticorrosion, waterproof, insulation etc.Produce in the process of the said goods, need pitch is heated, carries and makes the pitch class compound that satisfies various technological requirements.In this technical process, can produce a large amount of bitumen flue gas and dust.

Pitch waste gas comprises bitumen flue gas, dirt particle and the oil particles of come-up.Pitch waste gas contains gas chromatography, comprises carbocyclic ring hydrocarbon, cyclic hydrocarbon derivative and other compound, has much health of human body is had damaging effect, and be carcinogenic and strong carcinogen mostly, such as multiple multiring aromatic hydrocarbon substances such as BaP, benzanthracene, carbazoles.The particle diameter of asphalt smoke is many between 0.1~1.0 μ m, minimum only 0.01 μ m, the maximum 10.0 μ m that are about.Be that the multiple carcinogen of representative is attached on the following floating dust of 8 um with 3,4-BaP, inhaled in the human body by respiratory tract to be detrimental to health.

Fathering bitumen waste gases is imperative, but the improvement method of pitch waste gas is all comparatively simple both at home and abroad at present, can not thoroughly remove bitumen flue gas and peculiar smell; And there is secondary pollution, the problems such as maintenance cost height.A kind of pitch emission-control equipment of for example introducing in the patent (200710071290.9), this device adopts the processing method of water spray-oil bath-electrostatic depuration.Weak point is: 1, pitch waste gas carries out the water spray filtering, and the tar material in the waste gas is blended directly in the water, can't directly recycle; Contain in the shower water with coal tar and other material, directly discharging can cause secondary pollution, then increases operating cost if carry out sewage disposal again.2, smoke exhaust pipe is stretched under the oil level, carry out oil bath, equipment resistance is large, and energy consumption is high.3, adopt static that pitch waste gas is carried out oxidation processes, the voltage of electric field of the type is too high, and field intensity is inhomogeneous, can be by the high pressure moment carbonization in the electric field after pitch waste gas enters this electric field, produce new pollutant, waste gas after the processing is contained be charred flavor, still contaminated environment.

The utility model content

The utility model provides a kind of pitch exhaust gas purifying method and device thereof, has filled up the blank that domestic pitch waste gas can efficiently be administered.This technology can make present pitch exhaust emission problem obtain good improvement, the treatment of wastes with processes of wastes against one another, energy-saving and emission-reduction after using.

The utility model relates to a kind of pitch exhaust gas purifying method, use cooling condensation, physical separation, non-thermal plasma trap, can be fast, efficiently, the up hill and dale greasy dirt in the asphalt flue gas purifying, smog, dust particle, pernicious gas, bacterium, germ, peculiar smell etc., emission compliance gas.

Pitch exhaust gas purifying method described in the utility model comprises the steps:

1) pitch waste gas is become pitch coke oil droplet and flue gas by emchanically centrifugal separation, reclaim the pitch coke oil droplet;

2) will lead to filter through the flue gas that the step 1) centrifugation goes out, and hold back micron order tarvia particle, the flue gas of the remaining smoke particles that contains submicron order, poisonous BaP and peculiar smell passes through filter;

3) make through step 2) process flue gas later and oilyly fully contact with absorbing, remove peculiar smell;

4) will import condenser through the flue gas that step 3) was processed and carry out heat exchange, and make the gaseous state mist of oil in the flue gas be condensed into the pitch coke oil droplet and reclaim the pitch coke oil droplet;

5) will import in the high-voltage electrostatic field through the flue gas that step 4) was processed, via the effect of the low temperature plasma that produces in the high-voltage electrostatic field, flue gas is purified.

Described absorption oil is to be sprayed into the absorption mist of oil through spray thrower.

Described absorption oil is waste machine oil, reaches the purpose of the treatment of wastes with processes of wastes against one another.

Saturated rear recyclable as raw material of industry utilization as the peculiar smell that the waste machine oil that absorbs the oil use absorbed in the pitch waste gas.

Saturated rear recyclable as raw material of industry utilization as the peculiar smell that the waste machine oil that absorbs the oil use absorbed in the pitch waste gas.

The aperture of filter is 1-5 μ m.

Employing water-cooling pattern cooling, condensed water and pitch waste gas be without directly contacting, non-secondary pollution, and environmental protection, energy-conservation.The condensation of lowering the temperature in addition is condensed into the pitch coke oil droplet with the gaseous state mist of oil in the pitch waste gas, thereby reduces oil content in the waste gas, reduces simultaneously the waste gas bulk temperature, satisfies follow-up static electric field job requirement and improves purification efficiency, simultaneously the recovery section oil plant.

Described low-temperature plasma purifies and refers to: corona discharge produces high concentration ion in the electric field, make the electric charge by different (positive and negative) on the particle band in the flue gas of electric field, thereby from attracting mutually, coalescence, single volume increase is gathered into agglomerate and sedimentation, thereby little trickle smoke particle thing reunion sedimentation to submicron order is purified flue gas.

Utilize high-pressure electrostatic to process waste gas, form not uniform electric field between the static two-stage, near close discharge electrode, intensity is very high, is conducive to free electron acceleration in the air, make the kinetic energy of free electron acquisition greater than air molecule ionization energy, cause air molecule ionization in the arrester stage zonule, so produced plasma among a small circle, the effect of particle in the existing capture mist of oil of static, the effect of removing gaseous organic substance in the mist of oil is arranged again, so also have the taste removal effect.

Plasma is a kind of state of aggregation material, a series of primitive physical reactions can occur during with the molecular collision in the mist of oil in its high energy electron that has, and in course of reaction, produce various active free radical and free elemental oxygen, living radical can destroy nucleic acid and the protein in various viruses, the bacterium effectively, make it can not carry out normal metabolism and biosynthesis, thereby cause its death; And the free oxygen atomic energy resolves into carbon dioxide and water with oil smoke molecule, gas with foreign flavor rapidly.

The utility model also provides a kind of pitch waste gas purification apparatus, this device comprise housing and along the airflow direction be fixedly connected sequentially on housing inlet scoop, centrifugation section, filter, spray thrower, condenser, electrode and blast pipe;

Described centrifugation section comprises impeller and motor, the driven by motor vane rotary;

The aperture of described filter is 1-5 μ m,

Spray piping is set is connected with spray thrower, lower housing portion also is provided with the waste machine oil case, interior storage waste machine oil, one side of waste machine oil case arranges oil circulating pump, oil circulating pump links to each other with spray piping, and waste machine oil imports spray piping through oil circulating pump, sprays through spray thrower;

Suction hose, supply-water pump and drainpipe also are set are connected with condenser, an end of condenser connects suction hose through supply-water pump, and the other end connects drainpipe, and suction hose passes into running water, through the effect inflow condenser of supply-water pump, discharges through drainpipe again;

Electrode produces electrostatic field;

The below of housing is provided with discharging tube and oil exit pipe, and described discharging tube is discharged the waste machine oil in the waste machine oil case, and described oil exit pipe is used for discharging the tarvia that goes out through centrifugation and the tarvia that condenses through condensation.

Pitch waste gas is collected the mechanism by impeller through the inlet scoop, be centrifugated into pitch coke oil droplet and flue gas, the machine power that is provided by centrifugal motor, flue gas is filtered, hold back micron order tarvia oil particles, make that poisonous BaP and peculiar smell pass through in the smoke particles of submicron order and the flue gas, pass through again the spray thrower below, contact with waste machine oil, waste machine oil absorbs the peculiar smell in the pitch waste gas, the smoke particles of submicron order and flue gas continue circulation, through condenser, with the condensed water generation heat exchange in the condenser, mist of oil in the flue gas is condensed into the pitch coke oil droplet, flue gas after the cooling enters electrostatic field, the trickle flue gas particles reunion sedimentation of submicron order, and flue gas is purified.

Described waste machine oil is that flash-point is higher than 66 ℃ waste machine oil.For example used oil or useless gear oil; Use the waste machine oil can the treatment of wastes with processes of wastes against one another, saved the fathering bitumen waste gases cost.

Described condensed water is running water, and running water absorbs the heat of pitch waste gas, the temperature of running water is raise, but obtain the hot water reuse.

Described electroplax is two rows, and row's electroplax is provided with high pressure generator, and row's electroplax is provided with low pressure generator.High pressure makes the air-flow that passes through electrically charged, and low pressure makes the submicron particles thing in the air-flow adsorb mutually reunion.

High-low pressure has been avoided the pure high voltage electric field of conventional type that the carbonization of pitch exhaust gas particle is produced and has been charred peculiar smell in conjunction with obtaining electrostatic field.

Described high pressure generator and low pressure generator be with arc quenching protection, and its power supply that connects be the power supply less than or equal to 200W.High pressure generator with arc quenching protection has guaranteed the equipment security of operation,

Be provided with 2-7 layer stainless steel filtering net and be fixedly connected on motor AfterThe side, pitch waste gas passes filter screen in centrifugal process, form the bump turbulent flow, and the mist of oil in the pitch waste gas is attached to and forms the pitch coke oil droplet on the filter screen, along the downward landing of filter screen, and accumulation, the tarvia recoverable.When affiliated screen surface is stainless steel, the best results of oil droplet gathering and landing.

Every pore diameter range all can be used for pitch waste gas purification apparatus described in the utility model at the filter of 1-5 μ m, as a kind of improvement, the employed filter of the utility model is that the cross section is zigzag fire-retardant porous fibre, the micron order tarvia particle that the energy effectively catching is escaped, poisonous BaP and peculiar smell etc. enter the processing of spray-absorption section in the smoke particles of remaining submicron order and the flue gas.Fire-retardant porous fibre is as filter, but existing filter effect absorption of noise also.This filter uses after 3-6 month namely saturated, needs to change filtrate.

Housing surrounds cavity below described spray thrower, be equipped with Ball-type packing in the cavity, be evenly distributed with the through hole that supplies air-flow and waste machine oil to pass through on the cavity wall, the waste machine oil of spray thrower ejection flows along the surface of Ball-type packing, has increased the contact area of waste machine oil and flue gas.

Housing surrounds passage below cavity, be gas channel; Described cavity, gas channel are connected with the waste machine oil case, are provided with spherical filtrate in the terminal relative wind direction of described gas channel.

Bitumen flue gas flows in the waste machine oil case by gas channel, utilizes the principle of inertia of air-flow to pour on the liquid level of waste machine oil case 7, forms to impact, and part tiny oil droplets, dirt particle in the flue gas are dissolved in the waste machine oil.And part tiny oil droplets, dirt particle in the flue gas are held back by spherical filtrate, are back in the waste machine oil.

This pitch waste gas purification apparatus has been reached four purposes, is respectively: tarvia recovery, low cost movement, waste heat recovery supplying hot water and pitch waste gas purification.

The process for purifying that pitch waste gas purification apparatus described in the utility model adopts is scientific and effective, and whole purification efficiency is high.Pitch waste gas after the purification, range estimation is smokeless, and the peculiar smell clearance can reach 90%.Concentration of emission meets<discharge standard of air pollutants〉GB16297-1996 and<emission standard for odor pollutants the requirement of GB14554-93.

The main beneficial effect of pitch waste gas purification apparatus described in the utility model is:

1) adopt the processing mode of centrifugation and mechanical filter, can pure recovery tarvia, the direct recycling that tarvia can 100%, good economy performance.

2) adopt waste machine oil to remove the pitch peculiar smell as absorbent, the treatment of wastes with processes of wastes against one another, cost is low.

3) employing has the high pressure generator of arc quenching protection to guarantee the equipment security of operation, and the electrostatic field of high-low pressure combination has been avoided again the conventional type high voltage electric field that the carbonization of pitch exhaust gas particle is produced and has been charred peculiar smell.

4) purification style is selected rationally without producing pollution transportation or secondary pollution phenomenon, to reach real environment protection treating.

5) purifying rate satisfies emission request.

Description of drawings

Fig. 1 is the technological process of pitch exhaust gas purifying method described in the utility model.

Fig. 2 is the structural representation of pitch waste gas purification apparatus described in the utility model, and arrow represents the off-gas flows circulating direction among the figure, 1 centrifugation section, 2 filters, 3 cavitys, 4 spray throwers, 5 Ball-type packings, 6 gas channels, 7 waste machine oil casees, 8 discharging tubes, 9 oil circulating pumps, 10 condensers, 11 condensed waters, 12 supply-water pumps, 13 equipment legs, 14 suction hoses, 15 drainpipes, 16 inlet scoops, 17 housings, 18 electroplaxs, 19 blast pipes, 20 oil exit pipes, 21 spherical filtrates, 22 filter screens.

Specific embodiment

Pitch waste gas purification apparatus described in the utility model, its structure is by housing 17, inlet scoop 16, centrifugation section 1, filter 2, oil circulating pump 8, spray piping (not marking in the drawings) and spray thrower 4, suction hose 14, supply-water pump 12, condenser 10 and drainpipe 15, and electroplax 18 and blast pipe 19 form; Housing 17 surrounds cavity 3 below spray thrower; The below of cavity 3, housing 17 surrounds gas channel 6; The below of gas channel 6, relative wind direction are provided with spherical filtrate 21, and housing 17 surrounds waste machine oil case 7; Cavity 3, gas channel 6 and waste machine oil case 7 are connected; Cavity 3 built-in Ball-type packings 5, the lower end of housing 17 arranges discharging tube 8 and oil exit pipe 20; Centrifugation section 1 comprises motor (not marking in the drawings), impeller (not marking in the drawings) and stainless steel filtering net 22, and the rear of motor is fixedly connected with 2 layers of stainless steel filtering net 22; The opposite side of waste machine oil case 7 is oil circulating pump 9, and oil circulating pump 9 connects spray piping.

When the pitch waste gas purification apparatus is in running order, collect a large amount of pitch waste gas that produce in the production line, include dirt particle, pitch coke elaioleucite and the flue gas of come-up, driven by motor wheel rotation in the centrifugation section 1, the suspended particulate that these are harmful is by in air entry 16 suction apparatus, High Rotation Speed centrifugal force by the impeller in the centrifugation section 1 is retained down the dust in the pitch waste gas, the separation of tarvia oil droplet, and the pitch coke oil droplet reclaims; Enter again filter 2 by the bitumen flue gas that flows out in the centrifugation section 1, pass into again in the cavity 3, this place's waste machine oil is through spray thrower 4 ejections, outer surface along Ball-type packing 5 flows, bitumen flue gas and waste machine oil are at Ball-type packing 5 Surface Contacts, Ball-type packing 5 has increased the contact area of waste machine oil and bitumen flue gas, and the principle of utilizing the same sex to mix absorbs peculiar smell and the BaP in the pitch waste gas; Bitumen flue gas flows in the waste machine oil case 7 by gas channel 6, utilizes the principle of inertia of air-flow to pour on the liquid level of waste machine oil case 7, forms and impacts, and the part tiny oil droplets in the flue gas, dirt particle are held back through spherical filtrate and be back in the waste machine oil; The waste gas that flows through from the liquid level of mechanical dirty oil tank 7 enters in the condenser 10, supply-water pump 12 is squeezed into the condensed water 11 of low temperature in the housing of condenser 10, produce heat exchange by condenser and hard pitch waste gas, the pitch EGT is reduced, cooling water temperature raises; Entered again in the electroplax 18 by the bitumen flue gas that flows out in the condenser 10, thereby pitch waste gas is purified; Pass through exhaust duct (19) to high altitude discharge through the bitumen flue gas up to standard after purifying layer by layer.

The pure tarvia of equipment when operation trapped inside was wanted oil exit pipe 20 and was discharged, and was convenient to the reuse of user's waste oil.

Practice test result according to certain waterproof roll production line presses 30000m 3The pitch exhaust treatment system of/h, the about 35Kg of recyclable pure tarvia every day.Use and to save the about 12600Kg of tarvia raw material, obvious economic in 1 year.

The clean hot water that produces in the cooling condenser can be used as the daily life water of Plant personnel, and is economical and practical.

Pitch waste gas is after device described in the utility model purifies, and the gas of discharge is estimated smokelessly substantially, and the peculiar smell clearance reaches 90%.According to GB<atmosphere pollutants emission standards〉GB16297-1996 and<emission standard for odor pollutants the ceiling value of GB14554-93 regulation, three important indicators of check pitch waste gas, data as shown in the table:

Above-mentioned detection data show that the purification style that pitch waste gas purification apparatus described in the utility model adopts is scientific and effective, and whole purification efficiency is high.Concentration of emission meets GB<atmosphere pollutants emission standards〉GB16297-1996 and<emission standard for odor pollutants the secondary standard of GB14554-93 regulation.

Claims (9)

1. pitch waste gas purification apparatus is characterized in that: comprise housing and along the airflow direction be fixedly connected sequentially on housing inlet scoop, centrifugation section, filter, spray thrower, condensate pipe, electroplax and blast pipe;
Described centrifugation section comprises impeller and motor, the driven by motor vane rotary;
The aperture of described filter is 1-5 μ m,
Spray piping is set is connected with spray thrower, lower housing portion also is provided with the waste machine oil case, interior storage waste machine oil, and a side of waste machine oil case arranges oil circulating pump, and oil circulating pump links to each other with spray piping;
Suction hose, supply-water pump and drainpipe also are set are connected with condensate pipe, an end of condensate pipe connects suction hose through supply-water pump, and the other end connects drainpipe;
The below of housing is provided with discharging tube and oil exit pipe.
2. pitch waste gas purification apparatus according to claim 1, it is characterized in that: described waste machine oil is that flash-point is higher than 66 ℃ waste machine oil.
3. pitch waste gas purification apparatus according to claim 1, it is characterized in that: described condensed water is running water.
4. pitch waste gas purification apparatus according to claim 1, it is characterized in that: described electroplax is two rows, and a row is provided with high pressure generator, and a row is provided with low pressure generator.
5. pitch waste gas purification apparatus according to claim 1 is characterized in that: described high pressure generator and low pressure generator be with arc quenching protection, and its power supply that connects be the small-power power less than or equal to 200W.
6. pitch waste gas purification apparatus according to claim 1 is characterized in that: be provided with the below that 2-7 metafiltration net is fixedly connected on motor.
7. pitch waste gas purification apparatus according to claim 1, it is characterized in that: described filter is that the cross section is zigzag fire-retardant porous fibre.
8. pitch waste gas purification apparatus according to claim 1, it is characterized in that: housing surrounds cavity below described spray thrower, is equipped with Ball-type packing in the cavity, is distributed with the through hole that passes through for air-flow and waste machine oil on the cavity wall.
9. pitch waste gas purification apparatus according to claim 1, it is characterized in that: housing surrounds passage below cavity, is gas channel; Described cavity, gas channel are connected with the waste machine oil case, are provided with spherical filtrate in the terminal relative wind direction of described gas channel.
CN 201220525936 2012-10-15 2012-10-15 Purifying device of asphalt waste gas CN202876599U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102872671A (en) * 2012-10-15 2013-01-16 裴登明 Asphalt waste gas purifying method and device
CN103349881A (en) * 2013-08-08 2013-10-16 上海台安工程实业有限公司 Multifunctional environment-friendly asphalt flue gas purification system
CN104107612A (en) * 2014-06-23 2014-10-22 上海遨提新材料技术咨询有限公司 Dust-containing asphalt smoke processing device
CN104548844A (en) * 2014-12-25 2015-04-29 东莞市蓝鹰环保科技有限公司 Waste gas recovering and purifying device used for molybdenum concentrate pretreatment
CN106287886A (en) * 2016-08-26 2017-01-04 丁荣 There is the oil fume purifier of air amplifier
WO2017063337A1 (en) * 2015-10-14 2017-04-20 成都市智联环境保护设备有限公司 Novel dust remover for removing pitch in smoke
CN107469486A (en) * 2017-09-27 2017-12-15 新中天环保股份有限公司 A kind of bitumen solidification toxicant filter

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102872671A (en) * 2012-10-15 2013-01-16 裴登明 Asphalt waste gas purifying method and device
CN103349881A (en) * 2013-08-08 2013-10-16 上海台安工程实业有限公司 Multifunctional environment-friendly asphalt flue gas purification system
CN103349881B (en) * 2013-08-08 2014-12-10 上海台安实业集团有限公司 Multifunctional environment-friendly asphalt flue gas purification system
CN104107612A (en) * 2014-06-23 2014-10-22 上海遨提新材料技术咨询有限公司 Dust-containing asphalt smoke processing device
CN104107612B (en) * 2014-06-23 2018-04-27 上海遨提新材料技术咨询有限公司 A kind of processing unit of bitumen flue gas containing dust
CN104548844A (en) * 2014-12-25 2015-04-29 东莞市蓝鹰环保科技有限公司 Waste gas recovering and purifying device used for molybdenum concentrate pretreatment
WO2017063337A1 (en) * 2015-10-14 2017-04-20 成都市智联环境保护设备有限公司 Novel dust remover for removing pitch in smoke
CN106287886A (en) * 2016-08-26 2017-01-04 丁荣 There is the oil fume purifier of air amplifier
CN106287886B (en) * 2016-08-26 2018-04-24 丁荣 Oil fume purifier with air amplifier
CN107469486A (en) * 2017-09-27 2017-12-15 新中天环保股份有限公司 A kind of bitumen solidification toxicant filter

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