CN110090531A - A kind of efficient refinery's organic waste gas treatment device containing benzene and processing method - Google Patents
A kind of efficient refinery's organic waste gas treatment device containing benzene and processing method Download PDFInfo
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- CN110090531A CN110090531A CN201910430158.5A CN201910430158A CN110090531A CN 110090531 A CN110090531 A CN 110090531A CN 201910430158 A CN201910430158 A CN 201910430158A CN 110090531 A CN110090531 A CN 110090531A
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- exhaust gas
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- rich solution
- pipeline
- benzene
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- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 title claims abstract description 222
- 239000007789 gas Substances 0.000 title claims abstract description 106
- 239000010815 organic waste Substances 0.000 title claims abstract description 22
- 238000003672 processing method Methods 0.000 title abstract description 5
- 238000010521 absorption reaction Methods 0.000 claims abstract description 82
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 239000002912 waste gas Substances 0.000 claims abstract description 10
- 230000002745 absorbent Effects 0.000 claims description 54
- 239000002250 absorbent Substances 0.000 claims description 54
- 230000001105 regulatory effect Effects 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 12
- 230000003197 catalytic effect Effects 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 238000005336 cracking Methods 0.000 claims description 7
- 239000006096 absorbing agent Substances 0.000 claims description 6
- 239000002283 diesel fuel Substances 0.000 claims description 6
- 230000004907 flux Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 238000011897 real-time detection Methods 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 238000010025 steaming Methods 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 claims 1
- 239000012855 volatile organic compound Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000012864 cross contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1487—Removing organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of efficient refinery's organic waste gas treatment device containing benzene and processing method, which includes benzene absorptive unit and burned waste gas unit, and benzene absorptive unit includes mixer, absorption tower and rich solution pump, and the exhaust gas entrance of mixer connects the first pipeline；The outlet of mixer is connected to the first entrance for being located at one side lower part of absorption tower；On absorption tower, the second entrance of one upper lateral part is connected with the second pipeline；The rich solution pump is connected between the liquid outlet of absorb the bottom of the tower and the rich solution entrance of mixer；The burned waste gas unit includes the first blower, incinerator and chimney, the exhaust outlet on the absorption tower top is connected to by third pipeline, the first blower and air intake valve with the air inlet of incinerator bottom, is sent into incinerator after the organic exhaust gas pressurization for absorption tower to be discharged and is sufficiently cracked；The exhaust outlet of incinerator bottom is connected to by outlet valve and pipeline with chimney.The device can be realized refinery's qualified discharge of organic exhaust gas containing benzene, and object without secondary pollution generates.
Description
Technical field
The present invention relates to chemical equipment technical field, in particular to a kind of efficient refinery's organic waste gas treatment device containing benzene and
Processing method.
Background technique
Since 2014 carry out the appearance of petrochemical industry VOCs comprehensive improvement policy comprehensively, petrochemical industry refinery actively controls VOCs
Discharge, at present refinery's organic exhaust gas because benzene content it is unstable, processing be always refinery VOCs administer problem.Refinery has containing benzene
Machine exhaust-gas treatment generally passes through the processing means such as absorption (active carbon, film process), burning, absorption.Absorption method is current Industry Waste
Gas administer in a kind of the most frequently used and most mature technique, wherein active carbon because the feature that adsorption capacity is strong, raw material is sufficient it is wide
General to be applied to refinery's VOCs treatment containing benzene, disadvantage of this law is that leading to secondary pollution, running cost is big.Combustion method is suitable for
All kinds of organic exhaust gas, combustion method handle VOCs exhaust treatment efficiency height, have very big technology excellent in organic waste-gas purification field
Gesture, but refinery's VOCs exhaust gas, if organic exhaust gas containing benzene, concentration is greater than 150mg/m3When, row up to standard is difficult to realize by the method
It puts.Absorption process is to be absorbed using solvent to VOCs, is separated by solvent with VOCs physical property difference, by absorption
VOCs is recycled as product.Water is a kind of common absorbent, but water is unobvious to organic gas assimilation effect.
Summary of the invention
The technical problem to be solved by the present invention is to one kind to be provided can be realized refinery's qualified discharge of organic exhaust gas containing benzene,
The efficient refinery's organic waste gas treatment device containing benzene and processing method that object without secondary pollution generates.
The technical scheme is that
A kind of efficient refinery's organic waste gas treatment device containing benzene, including benzene absorptive unit and burned waste gas unit, the benzene
Absorptive unit includes mixer, absorption tower and rich solution pump, and the exhaust gas entrance of mixer connects the first pipeline, for being passed through organic waste
Gas；The outlet of mixer is connected to the first entrance for being located at one side lower part of absorption tower, for by having after composite absorber rich solution
Machine exhaust gas is sent into absorption tower；On absorption tower, the second entrance of one upper lateral part is connected with the second pipeline, for being passed through absorbent pair
Benzene in organic exhaust gas is absorbed；The rich solution pump be connected to absorb the bottom of the tower liquid outlet and mixer rich solution entrance it
Between, the benzene in organic exhaust gas is absorbed for the first time for will be sent into mixer after the absorbent rich solution boosting in absorption tower；
The burned waste gas unit includes the first blower, incinerator and chimney, and the exhaust outlet on the absorption tower top passes through
Third pipeline, the first blower and air intake valve are connected to the air inlet of incinerator bottom, the organic waste for absorption tower to be discharged
It is sent into incinerator after gas pressurization and is sufficiently cracked；The exhaust outlet of incinerator bottom is connected by outlet valve and pipeline and chimney
It is logical, for the exhaust gas up to standard after abundant cracking to be discharged into atmosphere by chimney.
As further preferred, the absorbent is straight-run diesel oil, catalytic diesel oil, coker gas oil, direct steaming gasoline, catalysis vapour
Oil, any one in coker gasoline.
As further preferred, the exit of the rich solution pump also and is connected to and returns factory's pipeline, for the absorption in absorption tower
Refinery's freshening is returned after the boosting of agent rich solution.
As further preferred, the exhaust ports on third pipeline close to absorption tower top are connected with first pressure in turn
The signal output end of table and tower top regulating valve, first pressure gauge is connect with tower top regulating valve, for realizing according at the top of absorption tower
Pressure controls the aperture of tower top regulating valve, so that stable absorption top of tower pressure is 0.01~0.3MPa (A).
As further preferred, it is connected with in-line analyzer by sampling pipeline on third pipeline, for detecting discharge
Organic exhaust gas in benzene concentration；Absorbent regulating valve is equipped on the second pipeline, the signal output end of in-line analyzer is distinguished
It is connect with tower top regulating valve and absorbent regulating valve, for absorbing agent flux according to the benzene content control in organic exhaust gas.
As further preferred, be equipped with second pressure gauge on the first pipeline, the signal output end of the second pressure gauge with
Rich solution regulating valve connection at the rich solution entrance of mixer is set, for balancing the organic exhaust gas pressure and suction that are passed through mixer
Receive the flow of agent rich solution.
As further preferred, the burner being connected to incinerator is installed on incinerator top, for maintaining incinerator
Interior temperature makes its temperature range be maintained at 750 DEG C -850 DEG C.
As further preferred, it is additionally provided with the second blower, the exhaust outlet of the second blower is connected to with third pipeline, for drawing
Enter fresh air to purge incinerator.
A kind of efficient refinery's organic waste gas treatment method containing benzene, comprising steps are as follows:
1, absorbent is sent into absorption tower by the second pipeline, while starts rich solution pump and lighting and is located at incinerator top
Burner, temperature in the burner hearth of incinerator is maintained 750 DEG C~850 DEG C；
2, benzene organic exhaust gas will be contained to be sent into mixer by the first pipeline, and be sent into absorption tower through mixer；Pass through
Absorbent and organic exhaust gas act on, and absorb to the benzene in organic exhaust gas, form absorbent rich solution and are stored in absorption tower；
3, by rich solution pump by absorption tower absorbent rich solution boost rear portion be sent into mixer in, and with entrance
Organic exhaust gas mixing, absorbs the benzene in organic exhaust gas by absorbent rich solution for the first time, organic after absorbing for the first time
Exhaust gas is mixed with absorbent rich solution to be sent into absorption tower；Factory's pipeline, which is returned, after the boosting of another part absorbent rich solution returns to refinery go back to
Refining；
4, the organic exhaust gas in absorption tower after absorbent absorbs is discharged by absorption tower top exhaust outlet, passes through on-line analysis
Benzene concentration in the organic exhaust gas of instrument real-time detection discharge；
5, when the benzene concentration of in-line analyzer detection is lower than 150mg/m3When, open absorption tower top tower top regulating valve and
The air intake valve of incinerator, and start the first blower, after organic exhaust gas is pressurized be sent into incinerator in, exhaust gas in incinerator into
Incinerator is discharged through outlet valve in row sufficiently cracking, the sufficiently exhaust gas up to standard after cracking, enters chimney by pipeline and is discharged into atmosphere
In.
As further preferred, the exhaust gas benzene concentration that incinerator is discharged in the step 5 is 0-4mg/m3。
The beneficial effects of the present invention are:
1, it can be realized by mixer, absorption tower and rich solution pump and double absorption carried out to the benzene in organic exhaust gas containing benzene,
Organic exhaust gas containing benzene carries out first benzene absorption by mixer and the absorbent rich solution at absorption tower bottom, can effectively reduce absorption tower
Absorbent dosage；Organic exhaust gas significantly reduces benzene content after double absorption, can be real after incinerator burning disposal
The full qualified discharges of indices such as existing non-methane total hydrocarbons, benzene, while object without secondary pollution generates.
2, the device absorbent uses refinery's waste material, and the rich solution after absorption can return to refinery's freshening, to organic containing benzene
The pre-absorption processing of exhaust gas does not influence entire VOCs process flow, does not influence the big process flow of full factory, and no waste liquid generates.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
In figure: mixer 1, absorbent regulating valve 2, the second pipeline 3, absorbent flowmeter 4, absorption tower 5, first pressure gauge
6, in-line analyzer 7, tower top regulating valve 8, third pipeline 9, the first blower 10, incinerator 11, third blower 12, burner 13,
Air intake valve 14, outlet valve 15, chimney 16, the 4th pipeline 17, the second blower 18, rich solution pump 19, flow control valve 20, liquid level
Transmitter 21, rich solution regulating valve 22, rich solution flowmeter 23, second pressure gauge 24, the first pipeline 25.
Specific embodiment
As shown in Figure 1, a kind of efficient refinery's organic waste gas treatment device containing benzene of the present invention, including benzene absorptive unit
With burned waste gas unit, the benzene absorptive unit includes mixer 1, absorption tower 5 and rich solution pump 19, the exhaust gas entrance of mixer 1
The first pipeline 25 is connected, for being passed through refinery's organic exhaust gas containing benzene.The mixer 1 uses venturi mixer, the mixer 1
Outlet be connected to the first entrance for being located at 5 one side lower part of absorption tower by pipeline, for the organic exhaust gas after rich solution will to be mixed
It is sent into absorption tower 5.The absorption tower 5 uses packed absorber, and on absorption tower, the second entrance of 5 one upper lateral part is connected with second
Pipeline 3 absorbs the benzene in the organic exhaust gas entered in absorption tower 5 for being passed through absorbent；The rich solution pump 19 passes through
Pipeline is connected between the liquid outlet of 5 bottom of absorption tower and the rich solution entrance of mixer 1, for by the absorbent in absorption tower 5
It is sent into mixer 1 after rich solution boosting and the benzene in organic exhaust gas is absorbed for the first time.
It is connected with second pressure gauge 24 on the first pipeline 25, the signal output end of the second pressure gauge 24 passes through regulating valve
Control system (not shown) is connect with the rich solution regulating valve 22 on pipeline at the rich solution entrance that mixer 1 is arranged in, and is used for
Balance is passed through the organic exhaust gas pressure of mixer 1 and the flow of absorbent rich solution.When organic exhaust gas hypotony, pass through rich solution
The flow of the reduction absorbent rich solution of regulating valve 22；Otherwise increase the flow of absorbent rich solution.
It is straight-run diesel oil by the absorbent that the second pipeline 3 enters in absorption tower, catalytic diesel oil, coker gas oil, straight
Evaporate gasoline, catalytic gasoline, any one in coker gasoline.
The exit of the rich solution pump 19 also and is connected to and returns factory's pipeline, for the absorbent rich solution in absorption tower 5 to boost
Refinery's freshening is returned afterwards.Flow control valve 20 and rich solution flowmeter 23 are installed on returning factory's pipeline, liquid is equipped in absorption tower 5
The signal output end of position transmitter 21, fluid level transmitter 21 and rich solution flowmeter 23 is adjusted by adjusting valve control system and flow
Valve 20 connects, for realizing the serials control of liquid level in absorbent rich solution flow and absorption tower, with the liquid level in stable absorption tower.
When liquid level reduces, flow is sent outside by adjusting valve control system control and regulation valve reduction absorbent rich solution；Otherwise increases and absorb
Agent rich solution sends flow outside.
Exhaust ports on third pipeline 9 close to absorption tower top are connected with first pressure gauge 6 in turn and tower top is adjusted
Valve 8, the signal output end of first pressure gauge 6 is connect by adjusting valve control system with tower top regulating valve 8, for realizing according to suction
The aperture of top of tower pressure control tower top regulating valve 8 is received, so that stable absorption top of tower pressure is 0.01~0.3MPa (A).
It is connected with in-line analyzer 7 by sampling pipeline positioned at the outlet side of tower top regulating valve 8 on third pipeline 9,
The benzene concentration in organic exhaust gas for detecting discharge.Absorbent flowmeter 4 and absorbent are sequentially installed on the second pipeline 3
The signal output end of regulating valve 2, absorbent flowmeter 4 and in-line analyzer 7 passes through respectively adjusts valve control system and tower top tune
It saves valve 8 and absorbent regulating valve 2 connects, for absorbing agent flux according to the benzene content control in organic exhaust gas.When benzene content is super
When mark, agent flux is absorbed by the increase of absorbent regulating valve 2, otherwise reduces and absorbs agent flux.
The burned waste gas unit includes the first blower 10, incinerator 11 and chimney 16, the exhaust on the absorption tower top
Mouth is connected to by third pipeline 9 and the first blower 10 with the air inlet for being located at each burner hearth bottom in incinerator 11, for that will inhale
It receives and is sufficiently cracked in each burner hearth of the organic exhaust gas of tower discharge by being sent into incinerator 11 after the pressurization of the first blower 10, with
Non-methane total hydrocarbons, the benzene etc. in removing exhaust gas are removed, realizes the qualified discharge of refinery's organic exhaust gas；At each burner hearth bottom of incinerator 11
Air intake valve 14 is separately installed at the air inlet in portion.The exhaust outlet of each burner hearth bottom passes through outlet valve 15 in incinerator 11
It is connected to the 4th pipeline 17 with chimney 16, it is described to burn for the exhaust gas up to standard after abundant cracking to be discharged into atmosphere by chimney
The exhaust gas benzene concentration for burning the discharge of 11 base bleed mouth of furnace is 0-4mg/m3。
The incinerator 11 is thermal accumulating incinerator, in catalytic burning furnace, heat accumulating type catalytic burning furnace, burner
It is any.The burner 13 being connected to incinerator is installed on incinerator top, for maintaining incinerator internal furnace after lighting
Temperature, so that its temperature range is maintained at 750 DEG C -850 DEG C.The air inlet of burner 13 is connected with third blower by pipeline
12, enter burner 13 for introducing air.
The device is additionally provided with the second blower 18, and the exhaust outlet of the second blower 18 is connected to with third pipeline 9, new for introducing
Fresh air enters incinerator by air intake valve 14 and is blown into organic matter remaining in incinerator to purging in incinerator
Burner hearth is incinerated, to prevent the cross contamination between intake and exhaust.
A kind of efficient refinery's organic waste gas treatment method containing benzene of the present invention, comprising steps are as follows:
1, absorbent is sent into absorption tower by the second pipeline 3, while starts rich solution pump 19 and lighting and is located at incinerator
Temperature in the burner hearth of incinerator is maintained 750 DEG C~850 DEG C by the burner 13 on top；
2, benzene organic exhaust gas will be contained to be sent into mixer by the first pipeline 25, and be sent into absorption tower through mixer；It is logical
It crosses absorbent and organic exhaust gas to act on, the benzene in organic exhaust gas absorb forms absorbent rich solution and be stored in absorption tower
It is interior；
3, by rich solution pump by absorption tower absorbent rich solution boost rear portion be sent into mixer in and with entrance
Organic exhaust gas mixing, absorbs the benzene in organic exhaust gas by absorbent rich solution for the first time, organic after absorbing for the first time
Exhaust gas is mixed with absorbent rich solution to be sent into absorption tower；Factory's pipeline, which is returned, after the boosting of another part absorbent rich solution returns to refinery go back to
Refining；
4, the organic exhaust gas in absorption tower after absorbent absorbs is discharged by absorption tower top exhaust outlet, passes through on-line analysis
Benzene concentration in the organic exhaust gas of 7 real-time detection of instrument discharge；
5, when the benzene concentration of in-line analyzer detection is lower than 150mg/m3When, open absorption tower top tower top regulating valve and
The air intake valve 14 of incinerator, and start the first blower 10, it is sent into incinerator after organic exhaust gas is pressurized, exhaust gas is in incinerator
Interior sufficiently to be cracked, incinerator, the off gas benzene of incinerator discharge is discharged through outlet valve 15 in the exhaust gas up to standard sufficiently after cracking
Concentration is 0-4mg/m3, chimney is entered by pipeline and is discharged into atmosphere.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (10)
1. a kind of efficient refinery's organic waste gas treatment device containing benzene, it is characterized in that: including benzene absorptive unit and burned waste gas unit,
The benzene absorptive unit includes mixer, absorption tower and rich solution pump, and the exhaust gas entrance of mixer connects the first pipeline, for being passed through
Organic exhaust gas；The outlet of mixer is connected to the first entrance for being located at one side lower part of absorption tower, is used for composite absorber rich solution
Organic exhaust gas afterwards is sent into absorption tower；On absorption tower, the second entrance of one upper lateral part is connected with the second pipeline, inhales for being passed through
Agent is received to absorb the benzene in organic exhaust gas；The rich solution pump is connected to the liquid outlet of absorb the bottom of the tower and the rich solution of mixer
Between entrance, the benzene in organic exhaust gas is carried out for the first time for will be sent into mixer after the boosting of the absorbent rich solution in absorption tower
It absorbs；
The burned waste gas unit includes the first blower, incinerator and chimney, and the exhaust outlet on the absorption tower top passes through third
Pipeline, the first blower and air intake valve are connected to the air inlet of incinerator bottom, and the organic exhaust gas for absorption tower to be discharged increases
It is sent into incinerator after pressure and is sufficiently cracked；The exhaust outlet of incinerator bottom is connected to by outlet valve and pipeline with chimney,
For the exhaust gas up to standard after abundant cracking to be discharged into atmosphere by chimney.
2. a kind of efficient refinery's organic waste gas treatment device containing benzene according to claim 1, it is characterized in that: the absorbent
For any one in straight-run diesel oil, catalytic diesel oil, coker gas oil, direct steaming gasoline, catalytic gasoline, coker gasoline.
3. a kind of efficient refinery's organic waste gas treatment device containing benzene according to claim 1, it is characterized in that: the rich solution pump
Exit also and be connected to and return factory's pipeline, for returning to refinery's freshening after so that the absorbent rich solution in absorption tower is boosted.
4. a kind of efficient refinery's organic waste gas treatment device containing benzene according to claim 1, it is characterized in that: in third pipeline
The upper exhaust ports close to absorption tower top are connected with first pressure gauge and tower top regulating valve in turn, and the signal of first pressure gauge is defeated
Outlet is connect with tower top regulating valve, for realizing the aperture for controlling tower top regulating valve according to absorption tower top pressure.
5. a kind of efficient refinery's organic waste gas treatment device containing benzene according to claim 1 or 4, it is characterized in that: in third
It is connected with in-line analyzer by sampling pipeline on pipeline, the benzene concentration in organic exhaust gas for detecting discharge；In the second pipe
Line is equipped with absorbent regulating valve, and the signal output end of in-line analyzer connects with tower top regulating valve and absorbent regulating valve respectively
It connects, for absorbing agent flux according to the benzene content control in organic exhaust gas.
6. a kind of efficient refinery's organic waste gas treatment device containing benzene according to claim 1, it is characterized in that: in the first pipeline
It is equipped with second pressure gauge, the signal output end of the second pressure gauge is adjusted with the rich solution being arranged at the rich solution entrance of mixer
Valve connection is passed through the organic exhaust gas pressure of mixer and the flow of absorbent rich solution for balancing.
7. a kind of efficient refinery's organic waste gas treatment device containing benzene according to claim 1, it is characterized in that: burning furnace roof
End is equipped with the burner being connected to incinerator, for maintaining the temperature in incinerator, make its temperature range be maintained at 750 DEG C-
850℃。
8. a kind of efficient refinery's organic waste gas treatment device containing benzene according to claim 1, it is characterized in that: being additionally provided with second
Blower, the exhaust outlet of the second blower are connected to with third pipeline, are purged for introducing fresh air to incinerator.
9. a kind of efficient refinery's organic waste gas treatment method containing benzene, it is characterised in that comprising steps are as follows:
(1) absorbent is sent into absorption tower by the second pipeline, while starts rich solution pump and lighting and is located at incinerator top
Temperature in the burner hearth of incinerator is maintained 750 DEG C~850 DEG C by burner；
(2) benzene organic exhaust gas will be contained to be sent into mixer by the first pipeline, and be sent into absorption tower through mixer；Pass through absorption
Agent and organic exhaust gas act on, and absorb to the benzene in organic exhaust gas, form absorbent rich solution and are stored in absorption tower；
(3) rear portion of boosting of the absorbent rich solution in absorption tower is sent into mixer by rich solution pump, and had with entrance
The mixing of machine exhaust gas, absorbs the benzene in organic exhaust gas by absorbent rich solution, the organic waste after absorbing for the first time for the first time
Gas is mixed with absorbent rich solution to be sent into absorption tower；Factory's pipeline, which is returned, after the boosting of another part absorbent rich solution returns to refinery go back to
Refining；
(4) organic exhaust gas in absorption tower after absorbent absorbs is discharged by absorption tower top exhaust outlet, passes through in-line analyzer
Benzene concentration in the organic exhaust gas of real-time detection discharge；
(5) when the benzene concentration of in-line analyzer detection is lower than 150mg/m3When, open the tower top regulating valve and burning on absorption tower top
The air intake valve of furnace, and start the first blower, it is sent into incinerator after organic exhaust gas is pressurized, exhaust gas is filled in incinerator
Incinerator is discharged through outlet valve in division solution, the sufficiently exhaust gas up to standard after cracking, enters chimney by pipeline and is discharged into atmosphere.
10. a kind of efficient refinery's organic waste gas treatment method containing benzene according to claim 9, it is characterized in that: the step
(5) the exhaust gas benzene concentration that incinerator is discharged in is 0-4mg/m3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910430158.5A CN110090531A (en) | 2019-05-22 | 2019-05-22 | A kind of efficient refinery's organic waste gas treatment device containing benzene and processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910430158.5A CN110090531A (en) | 2019-05-22 | 2019-05-22 | A kind of efficient refinery's organic waste gas treatment device containing benzene and processing method |
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| Publication Number | Publication Date |
|---|---|
| CN110090531A true CN110090531A (en) | 2019-08-06 |
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ID=67448953
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