CN107281868A - Bitumen flue gas processing method and equipment - Google Patents
Bitumen flue gas processing method and equipment Download PDFInfo
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- CN107281868A CN107281868A CN201610195935.9A CN201610195935A CN107281868A CN 107281868 A CN107281868 A CN 107281868A CN 201610195935 A CN201610195935 A CN 201610195935A CN 107281868 A CN107281868 A CN 107281868A
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- flue gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0003—Condensation of vapours; Recovering volatile solvents by condensation by using heat-exchange surfaces for indirect contact between gases or vapours and the cooling medium
- B01D5/0012—Vertical tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0033—Other features
- B01D5/0036—Multiple-effect condensation; Fractional condensation
Abstract
The present invention discloses a kind of bitumen flue gas processing method, including：Condensation, solvent absorption, physical absorption and dust removal by filtration.Invention additionally discloses a kind of asphalt flue gas treatment device, including：Condensing unit, absorptive unit, absorbing unit and the filter element being sequentially connected by pipeline.By using condensation, absorption and sorption, the stagewise processing method filtered, multistage screening purification is carried out to the bitumen flue gas of complicated component so that pitch waste gas indices are less than the indices obtained by existing processing mode, realize thoroughly harmless treatment；Suitable for batch production and consecutive production operating mode, so as to reduce operating cost；By using rapid condensation processing mode, blocking and " evaporating, emitting, dripping or leaking of liquid or gas " phenomenon of pipeline are thoroughly eradicated.
Description
Technical field
The invention belongs to the neck of the exhaust gas treatment technology in bituminizing technical process in carbon fibre material production technology
Domain, more particularly to a kind of bitumen flue gas processing method and equipment.
Background technology
In carbon fiber production process, when ature of coal pitch adds carbon fibre at a temperature of 180-300 degrees Celsius
When tieing up in reactor, pitch melts rapidly and volatilizes substantial amounts of yellowish-brown smog, yellowish-brown smog it is main into
Be divided into tarvia, anthracene, phenanthrene, pyrene,, the multiring aromatic hydrocarbon organic exhaust gas such as 3,4- BaPs, without place
Reason directly discharge can cause high risks to environment.
In order to the waste gas produced in bituminizing technical process carry out purified treatment, the method used at present for
Combustion method, i.e., be present the combustible contained in glance coal at a certain temperature with air contact and burning
The problem of operating cost height and big safety risks.
To solve the cost and safety problem of combustion method, absorption cleaning method and method for adsorbing and purifying enter people
The visual field, gaseous contaminant in flue gas is transferred to absorbent by absorption cleaning method, so as to reach purifying smoke
Purpose, method for adsorbing and purifying be with absorbent filter medium reach separation a kind of operating method of purpose.But above-mentioned two
The method of kind, which exists, purifies halfway problem, and in addition, bitumen flue gas is slowly lowered to low temperature from high temperature
The tar that is condensed under state, anthracene, phenanthrene, pyrene,Material can result in blockage to pipeline and occur " evaporating, emitting, dripping or leaking of liquid or gas "
Phenomenon.
The content of the invention
For the drawbacks described above and problem of prior art, there is provided a kind of bitumen flue gas processing method and equipment.This
Invention is realized using following technical scheme：
A kind of bitumen flue gas processing method is provided, this method includes：
Condensation：The condensed unit condensation of bitumen flue gas, forming tar liquid, liquid macromolecular arene has
Machine thing and by-pass filtration flue gas；
Solvent absorption：The dispatch of by-pass filtration flue gas is to absorptive unit, and absorptive unit is by by-pass filtration flue gas
Tar and macromolecular arene organic matter carry out solvent absorption separation, form secondary filtration flue gas；
Physical absorption：Secondary filtration flue gas enters absorbing unit, and absorbing unit will be big in secondary filtration flue gas
Molecule arene organic matter and small organic molecule are adsorbed completely, form three-stage filtration flue gas；
Dust removal by filtration：Three-stage filtration flue gas flows through filter element, and filter element is by three-stage filtration flue gas
Granular BaP hazardous material is removed.
Further, it is described to be condensed into multi-stage condensing：Bitumen flue gas sequentially enters first-stage condenser and two grades cold
Condenser, the first-stage condenser isolates most of drop in bitumen flue gas, and the secondary condenser is removed
More than 10 microns of droplet in bitumen flue gas, by condensing most of pollutant condensation in bitumen flue gas twice
Form tar liquid and liquid macromolecular arene organic matter and export by-pass filtration flue gas；Trap is collected
Tar liquid and liquid macromolecular arene organic matter that the condensation is formed.
Further, the absorption plant of the absorptive unit is washing oil absorption tower, and the washing oil absorption tower is not with
Steel Pall ring become rusty as packing layer, shower nozzle is respectively provided with to spray washing oil above and below described filler layer, it is described
By-pass filtration flue gas carries out molten in the washing oil absorption tower from bottom up flowing and washing oil formation counter current contacting
Agent absorption and separation.
Further, the adsorbent equipment of the absorbing unit is active carbon adsorber, and active carbon adsorber is complete
Adsorb the macromolecular arene organic matter and small organic molecule in the secondary filtration flue gas；The filtering
The filter of unit is HEPA high efficiency particulate air filters, and HEPA high efficiency particulate air filters are removed in the three-stage filtration flue gas
Remaining graininess BaP hazardous material.
Further, after the dust removal by filtration process, in addition to：The three-stage filtration flue gas is by filtering
The qualified asphalt flue gas formed after dust removal process is extracted out by pumping blower fan and is discharged into chimney, into air.
A kind of asphalt flue gas treatment device is provided, including：The condensing unit that is sequentially connected by pipeline, absorb
Unit, absorbing unit and filter element；
Bitumen flue gas is carried out condensation process by the condensing unit, forms tar liquid, liquid macromolecular fragrance
Hydrocarbon Organic and by-pass filtration flue gas；
The absorptive unit is used for the tar in the by-pass filtration flue gas and macromolecular arene organic matter
Solvent absorption separation is carried out, secondary filtration flue gas is formed；
The absorbing unit is by physical adsorption way, by the macromolecular aromatic hydrocarbon in the secondary filtration flue gas
Type organic and small organic molecule are adsorbed completely, form three-stage filtration flue gas；
The filter element is used to remove the graininess BaP hazardous material in the three-stage filtration flue gas.
Further, the condensing unit includes：The first-stage condenser and secondary condenser being sequentially connected, institute
State first-stage condenser and isolate most of drop in bitumen flue gas, the secondary condenser removes bitumen flue gas
In more than 10 microns of droplet；The first-stage condenser and the secondary condenser are that vertically-mounted tubular type is changed
Hot device, glance coal is made leave with rage in the pipe of pipe heat exchanger, and condensed water is walked between pipe heat exchanger pipe；The one-level is cold
It is big to collect the tar liquid and liquid of condensation formation to be respectively provided with trap below condenser and the secondary condenser
Molecule arene organic matter.
Further, the absorptive unit includes：Washing oil absorption tower, washing oil storage tank and washing oil pump；It is described to wash
Oil-absorption tower using stainless steel Pall ring as packing layer, be respectively provided with above and below described filler layer shower nozzle with to
Lower sprinkling washing oil, allows washing oil to be contacted with the by-pass filtration flue gas adverse current and is absorbed；Washing oil storage tank is arranged on
The washing oil absorbs tower bottom, washing oil pump by washing oil from the washing oil tank bottom conveyed from bottom to top with
Form circulation.
Further, the absorbing unit includes：Active carbon adsorber, active carbon adsorber uses activated carbon
The combination of tank and supporting bed, supporting bed is arranged on charcoal canister bottom, the supporting layer of supporting bed and placed
Carry out the column coal mass active carbon of physical absorption；The filter element includes：HEPA high efficiency particulate air filters, are used for
Remove the remaining graininess BaP hazardous material in the three-stage filtration flue gas.
Further, described asphalt flue gas treatment device, in addition to：It is connected to filter element outlet side
It is evacuated blower fan and chimney, the qualified asphalt cigarette that the three-stage filtration flue gas is formed after dust removal by filtration is handled
Gas is extracted out by pumping blower fan and is discharged into chimney, into air.
Beneficial effect：By using condensation, absorption and sorption, the stagewise processing method filtered, to composition
Complicated bitumen flue gas carries out multistage screening purification so that pitch waste gas indices are less than existing processing mode
Resulting indices, realize thoroughly harmless treatment；Suitable for batch production and consecutive production
Operating mode, so as to reduce operating cost；By using rapid condensation processing mode, the blocking of pipeline is thoroughly eradicated
" evaporating, emitting, dripping or leaking of liquid or gas " phenomenon.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to implementing
The accompanying drawing used required in example or description of the prior art is briefly described, it should be apparent that, describe below
In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying
On the premise of going out creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of bitumen flue gas processing method of the present invention；
Fig. 2 is the structural representation of asphalt flue gas treatment device of the present invention；
Fig. 3 is the internal structure schematic diagram on washing oil absorption tower of the present invention；
Fig. 4 is the internal structure schematic diagram of active carbon adsorber of the present invention.
Embodiment
Below in conjunction with the accompanying drawing of the present invention, technical scheme is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of creative work is not made
The every other embodiment obtained, belongs to the scope of protection of the invention.
In some illustrative embodiments, as shown in figure 1, the present invention provides a kind of bitumen flue gas processing side
Method, including：
101：Condensation.The condensed unit condensation of bitumen flue gas, forms tar liquid, liquid macromolecular aromatic hydrocarbon
Type organic and by-pass filtration flue gas.
Wherein, the process of condensation is multi-stage condensing：First, bitumen flue gas enters first-stage condenser, most of
Drop natural separation from bitumen flue gas, is trapped by the trap below first-stage condenser；Afterwards,
Bitumen flue gas is condensed again by secondary condenser again, and secondary condenser removes in bitumen flue gas more than 10 microns
Droplet, droplet trapped by the trap below secondary condenser.By condensing glance coal twice
Most of pollutant condenses to form tar liquid and liquid macromolecular arene organic matter and export one-level in gas
Filter flue gas.
First-stage condenser and secondary condenser are vertically-mounted pipe heat exchanger, and glance coal makes pipe type heat transfer leave with rage
In the pipe of device, condensed water is walked between pipe heat exchanger pipe, it is ensured that pollutant can reach sufficiently condensation and can protect
Card condensate is easily flowed out from condenser pipe.By rapid condensation mode, bitumen flue gas temperature is solved slow
The blocking of pipeline and " evaporating, emitting, dripping or leaking of liquid or gas " problem during reduction, condenser cleaning in 1 year once, are reduced
The input of cost.
102：Solvent absorption.The by-pass filtration flue gas that condensation unit is ejected enters absorptive unit, absorbs single
Member uses solvent absorption separate mode, by the tar in by-pass filtration flue gas and macromolecular arene organic matter
Absorbed and form secondary filtration flue gas.
Wherein, the absorption plant of absorptive unit is washing oil absorption tower, and by-pass filtration flue gas enters washing oil absorption tower
Flowed afterwards from bottom up, washing oil from top to down, counter current contacting is formed with by-pass filtration flue gas.Washing oil absorbs
Packing layer is set in the middle part of tower, and packing layer uses and is respectively provided with shower nozzle above and below stainless steel Pall ring, packing layer
To spray washing oil, allow by-pass filtration flue gas and washing oil fully to contact and absorbed, so that by by-pass filtration flue gas
In tar and macromolecular arene organic matter absorbed and form secondary filtration flue gas.
103：Physical absorption.The secondary filtration flue gas that absorptive unit is exported is delivered to absorbing unit, and absorption is single
Member adsorbs the macromolecular arene organic matter and small organic molecule in secondary filtration flue gas completely, is formed
Three-stage filtration flue gas.
Wherein, the adsorbent equipment of absorbing unit is active carbon adsorber, and active carbon adsorber uses charcoal canister
With the combination of supporting bed, the column coal mass active carbon on the supporting layer by placing supporting bed carries out physics
Absorption, so that will be complete by the macromolecular arene organic matter and small organic molecule in secondary filtration flue gas
Absorption.
104：Dust removal by filtration.The three-stage filtration flue gas that absorbing unit is exported is delivered to filter element, and filtering is single
Member removes the graininess BaP hazardous material in three-stage filtration flue gas.The filter of filter element is HEPA
High efficiency particulate air filter, HEPA high efficiency particulate air filter half a year one changes.
105：The qualified asphalt flue gas that three-stage filtration flue gas is formed after dust removal by filtration is handled is by pumping blower fan
Extract out and be discharged into chimney, into air.
106：Into the tar liquid and liquid macromolecular arene organic matter of trap, by depositing for half a year
The progress refinement of pitch factory is transported after storage back to reuse.
107：The tar and macromolecular arene organic matter incorporated in washing oil, being continued cycling through as cleaning agent makes
With transporting pitch factory after half a year back and refine purification again and develop washing oil and pitch.
108：After active carbon adsorber saturation, activated carbon is delivered into regeneration producer and regenerated, the work after regeneration
Property charcoal transport back and be continuing with, regeneration is general to use vapours desorption method.
In ature of coal pitch melting process, the lower-molecular substance in ature of coal pitch evaporates to form pitch
Flue gas, at normal temperatures, the pollutant in bitumen flue gas is largely solid-state or liquid, and its saturated vapor pressure is very
Low, the present invention first takes condensation method, most of pollutant in flue gas is condensed to liquid, for fixed gas
Middle organic matter then takes absorption and sorption, filter method purified treatment successively, carries out multistage screening purification, makes
What must be purified is more thorough, final to realize thoroughly harmless treatment.And suitable for batch production and company
Continuous property production status, so as to reduce operating cost.
As shown in Figures 2 to 4, in some illustrative embodiments, the present invention also provides a kind of bitumen flue gas
Processing equipment, including：Condensing unit, absorptive unit, absorbing unit and the filtering being sequentially connected by pipeline
Unit.Bitumen flue gas is carried out condensation process by condensing unit, forms tar liquid, liquid macromolecular aromatic hydrocarbon
Type organic and by-pass filtration flue gas；Absorptive unit is used for the tar in by-pass filtration flue gas and macromolecular virtue
Fragrant Hydrocarbon Organic carries out solvent absorption separation, forms secondary filtration flue gas；Absorbing unit passes through physical absorption
Mode, the macromolecular arene organic matter and small organic molecule in secondary filtration flue gas are adsorbed completely,
Form three-stage filtration flue gas；Filter element is used to go the graininess BaP hazardous material in three-stage filtration flue gas
Remove.
In some illustrative embodiments, condensing unit uses multi-stage condensing mode, including：It is sequentially connected
First-stage condenser 201 and secondary condenser 202, and first-stage condenser 201 and the B-grade condensation are set
The trap 203 of the lower section of device 202, bitumen flue gas sequentially enters first-stage condenser 201 and secondary condenser 202,
First-stage condenser 201 isolates most of drop in bitumen flue gas, and secondary condenser 202 removes glance coal
More than 10 microns of droplet in gas, the tar liquid and liquid that trap 203 is used to collect condensation formation divides greatly
Sub- arene organic matter, transports the progress refinement of pitch factory back after the storage of half a year and reuses.
First-stage condenser 201 and secondary condenser 202 are vertically-mounted pipe heat exchanger, and glance coal is made leave with rage
In the pipe of pipe heat exchanger, condensed water is walked between pipe heat exchanger pipe, it is ensured that pollutant can reach sufficiently cold
It is solidifying to can guarantee that condensate is easily flowed out from condenser pipe again, by rapid condensation mode, solve bitumen flue gas
The blocking of pipeline and " evaporating, emitting, dripping or leaking of liquid or gas " problem during temperature is slowly reduced.First-stage condenser 201 and two grades
The lower port of condenser 202 uses ready-package interface, is easy to safeguard condenser.
In some illustrative embodiments, absorptive unit includes：Washing oil absorption tower 204, washing oil storage tank 303
With washing oil pump 205, washing oil storage tank 303 is arranged on the bottom of washing oil absorption tower 204, washing oil pump 205 by washing oil from
Washing oil tank bottom is conveyed to form circulation from bottom to top.The outer surface of washing oil storage tank 303 is installed by washing oil liquid
Position meter 304, observes liquid level of the washing oil in washing oil storage tank 303 in real time.
The middle part of washing oil absorption tower 204 sets packing layer 301, and packing layer 301 uses stainless steel Pall ring, filler
Shower nozzle 302 is respectively provided with above and below layer 301 to spray washing oil downwards, i.e. washing oil spray is using two grades of colored umbrellas
Sprinkler design, every grade of stroke is not less than 3m, and packing layer 301 is not less than 1m.So as to allow washing oil and by-pass filtration
Flue gas adverse current contact carries out absorbing the tar and macromolecular arene organic matter in by-pass filtration flue gas.One-level
The tar and macromolecular arene organic matter filtered in flue gas is incorporated in washing oil, is continued cycling through as cleaning agent
Use, transport pitch factory after half a year back and refine purification development washing oil and pitch again.
In some illustrative embodiments, absorbing unit includes：Active carbon adsorber 206, charcoal absorption
Device 206 uses the combination of charcoal canister 401 and supporting bed 402, and supporting bed 402 is arranged on activated carbon
The bottom of tank 401.Pore Stainless steel mesh 404 is set on the supporting layer 403 of supporting bed 402, in supporting layer
Column coal mass active carbon is placed on 403, Stainless steel mesh 404 avoids activated carbon from leaking to subsequent processing device.
Dress carbon loads from the dress carbon manhole 405 at the top of charcoal canister 401, lets out carbon letting out from the bottom of charcoal canister 401
Carbon pores is discharged, and the bottom of charcoal canister 401 also sets up discharge outlet 406.Column coal mass active carbon is by secondary filtration cigarette
Macromolecular arene organic matter and small organic molecule in gas are adsorbed completely, after active carbon adsorber saturation,
Activated carbon is delivered into regeneration producer to be regenerated, transports back and is continuing with after regeneration, regeneration typically uses vapours
Desorption method.
In some illustrative embodiments, filter element includes：HEPA high efficiency particulate air filters 207, for going
Except the remaining graininess BaP hazardous material in three-stage filtration flue gas.
In some illustrative embodiments, asphalt flue gas treatment device, in addition to：It is connected to filter element
The pumping blower fan 208 and chimney 209 of outlet side, what three-stage filtration flue gas was formed after dust removal by filtration is handled
Qualified asphalt flue gas is extracted out by pumping blower fan 208 and is discharged into chimney 209, into air.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited to
This, any one skilled in the art the invention discloses technical scope in, can readily occur in
Change or replacement, should all be included within the scope of the present invention.Therefore, protection scope of the present invention should
It is described to be defined by scope of the claims.
Claims (10)
1. bitumen flue gas processing method, it is characterised in that this method includes：
Condensation：The condensed unit condensation of bitumen flue gas, forming tar liquid, liquid macromolecular arene has
Machine thing and by-pass filtration flue gas；
Solvent absorption：The dispatch of by-pass filtration flue gas is to absorptive unit, and absorptive unit is by by-pass filtration flue gas
Tar and macromolecular arene organic matter carry out solvent absorption separation, form secondary filtration flue gas；
Physical absorption：Secondary filtration flue gas enters absorbing unit, and absorbing unit will be big in secondary filtration flue gas
Molecule arene organic matter and small organic molecule are adsorbed completely, form three-stage filtration flue gas；
Dust removal by filtration：Three-stage filtration flue gas flows through filter element, and filter element is by three-stage filtration flue gas
Granular BaP hazardous material is removed.
2. bitumen flue gas processing method according to claim 1, it is characterised in that it is described be condensed into it is many
Level condensation：
Bitumen flue gas sequentially enters first-stage condenser and secondary condenser, and the first-stage condenser isolates pitch
Most of drop in flue gas, the secondary condenser removes more than 10 microns in bitumen flue gas of droplet, warp
Most of pollutant in bitumen flue gas is condensed to form tar liquid and liquid macromolecular aromatic hydrocarbon after condensing twice
Type organic simultaneously exports by-pass filtration flue gas；
Trap collects the tar liquid and liquid macromolecular arene organic matter that the condensation is formed.
3. bitumen flue gas processing method according to claim 1, it is characterised in that the absorptive unit
Absorption plant be washing oil absorption tower, the washing oil absorption tower is described using stainless steel Pall ring as packing layer
Shower nozzle is respectively provided with above and below packing layer to spray washing oil, the by-pass filtration flue gas absorbs in the washing oil
Solvent absorption is carried out in tower with washing oil formation counter current contacting from bottom up flowing to separate.
4. bitumen flue gas processing method according to claim 1, it is characterised in that the absorbing unit
Adsorbent equipment be active carbon adsorber, active carbon adsorber adsorbs big in the secondary filtration flue gas completely
Molecule arene organic matter and small organic molecule；The filter of the filter element is that HEPA is efficient
Filter, HEPA high efficiency particulate air filters remove the remaining graininess BaP harm in the three-stage filtration flue gas
Thing.
5. the bitumen flue gas processing method according to any one of Claims 1-4, it is characterised in that institute
After stating dust removal by filtration process, in addition to：
The qualified asphalt flue gas that the three-stage filtration flue gas is formed after dust removal by filtration is handled is by pumping blower fan
Extract out and be discharged into chimney, into air.
6. asphalt flue gas treatment device, it is characterised in that including：The condensing unit that is sequentially connected by pipeline,
Absorptive unit, absorbing unit and filter element；
Bitumen flue gas is carried out condensation process by the condensing unit, forms tar liquid, liquid macromolecular fragrance
Hydrocarbon Organic and by-pass filtration flue gas；
The absorptive unit is used for the tar in the by-pass filtration flue gas and macromolecular arene organic matter
Solvent absorption separation is carried out, secondary filtration flue gas is formed；
The absorbing unit is by physical adsorption way, by the macromolecular aromatic hydrocarbon in the secondary filtration flue gas
Type organic and small organic molecule are adsorbed completely, form three-stage filtration flue gas；
The filter element is used to remove the graininess BaP hazardous material in the three-stage filtration flue gas.
7. asphalt flue gas treatment device according to claim 6, it is characterised in that the condensing unit
Including：The first-stage condenser and secondary condenser being sequentially connected, the first-stage condenser isolate bitumen flue gas
In most of drop, the secondary condenser removes more than 10 microns in bitumen flue gas of droplet；Described one
Level condenser and the secondary condenser are vertically-mounted pipe heat exchanger, and glance coal makes pipe heat exchanger leave with rage
Pipe in, condensed water is walked between pipe heat exchanger pipe；Below the first-stage condenser and the secondary condenser
Trap is set to collect the tar liquid and liquid macromolecular arene organic matter that condensation is formed.
8. asphalt flue gas treatment device according to claim 6, it is characterised in that the absorptive unit
Including：Washing oil absorption tower, washing oil storage tank and washing oil pump；The washing oil absorption tower using stainless steel Pall ring as
Shower nozzle is respectively provided with above and below packing layer, described filler layer to spray washing oil downwards, allows washing oil and described one
Level filtering flue gas adverse current contact is absorbed；Washing oil storage tank is arranged on the washing oil and absorbs tower bottom, washing oil pump
Washing oil is conveyed from bottom to top from the washing oil tank bottom to form circulation.
9. asphalt flue gas treatment device according to claim 6, it is characterised in that the absorption list
Member includes：Active carbon adsorber, active carbon adsorber is using the combination of charcoal canister and supporting bed, branch
Straightener, which is arranged on, places the column ature of coal work for carrying out physical absorption on charcoal canister bottom, the supporting layer of supporting bed
Property charcoal；The filter element includes：HEPA high efficiency particulate air filters, for removing in the three-stage filtration flue gas
Remaining graininess BaP hazardous material.
10. the asphalt flue gas treatment device according to any one of claim 6 to 9, it is characterised in that
Also include：The pumping blower fan and chimney of filter element outlet side are connected to, the three-stage filtration flue gas passed through
The qualified asphalt flue gas formed after filtering dust collecting processing is extracted out by pumping blower fan and is discharged into chimney, into air.
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| CN201610195935.9A CN107281868A (en) | 2016-04-01 | 2016-04-01 | Bitumen flue gas processing method and equipment |
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| CN111957165A (en) * | 2020-09-04 | 2020-11-20 | 中冶焦耐(大连)工程技术有限公司 | Tail gas treatment process and system for kettle type heating modified asphalt reaction kettle |
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| 劳动部职业安全卫生监察局主编: "《工业防毒》", 31 July 1990, 中国劳动出版社出版 * |
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| CN107758627A (en) * | 2017-11-20 | 2018-03-06 | 广西大学 | A kind of separation and recovery method for cleaning the concentrated sulfuric acid and pitch mixed liquor caused by oil pipeline equipment |
| CN107758627B (en) * | 2017-11-20 | 2020-10-13 | 广西大学 | Separation and recovery method of concentrated sulfuric acid and asphalt mixed liquid generated by cleaning oil pipeline equipment |
| CN111957165A (en) * | 2020-09-04 | 2020-11-20 | 中冶焦耐(大连)工程技术有限公司 | Tail gas treatment process and system for kettle type heating modified asphalt reaction kettle |
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Application publication date: 20171024 |