CN110523263A - Utilize the exhaust gas processing device and method of mineralized waste processing gas phase extracting tail gas - Google Patents
Utilize the exhaust gas processing device and method of mineralized waste processing gas phase extracting tail gas Download PDFInfo
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- CN110523263A CN110523263A CN201910857226.6A CN201910857226A CN110523263A CN 110523263 A CN110523263 A CN 110523263A CN 201910857226 A CN201910857226 A CN 201910857226A CN 110523263 A CN110523263 A CN 110523263A
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- 239000002699 waste material Substances 0.000 title claims abstract description 100
- 238000012545 processing Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims description 23
- 238000001179 sorption measurement Methods 0.000 claims abstract description 157
- 238000012544 monitoring process Methods 0.000 claims abstract description 16
- 239000000945 filler Substances 0.000 claims abstract description 12
- 239000002351 wastewater Substances 0.000 claims abstract description 11
- 239000002689 soil Substances 0.000 claims abstract description 10
- 238000000605 extraction Methods 0.000 claims abstract description 7
- 230000008676 import Effects 0.000 claims abstract description 7
- 239000012855 volatile organic compound Substances 0.000 claims description 41
- 238000009792 diffusion process Methods 0.000 claims description 28
- 238000012806 monitoring device Methods 0.000 claims description 20
- 238000010521 absorption reaction Methods 0.000 claims description 17
- 239000000284 extract Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000003860 storage Methods 0.000 abstract description 3
- 239000005416 organic matter Substances 0.000 description 8
- 239000003463 adsorbent Substances 0.000 description 6
- 244000005700 microbiome Species 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000002906 microbiologic effect Effects 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000005067 remediation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000006063 cullet Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
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- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 229960000074 biopharmaceutical Drugs 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000000149 chemical water pollutant Substances 0.000 description 1
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- 150000002576 ketones Chemical class 0.000 description 1
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- 244000144972 livestock Species 0.000 description 1
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- 229910002027 silica gel Inorganic materials 0.000 description 1
- -1 small molecule compound Chemical class 0.000 description 1
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- 230000001988 toxicity Effects 0.000 description 1
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Classifications
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- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
- B01D53/85—Biological processes with gas-solid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/95—Specific microorganisms
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention provides the exhaust gas processing device using mineralized waste processing gas phase extracting tail gas, separative unit including sequential connection, absorbing unit and monitoring unit, separative unit includes air inlet pipe, vacuum pump and three phase separator, air inlet pipe is the delivery pipe for conveying the tail gas of soil vapor extraction generation, the import of vacuum pump is connect with air inlet pipe, and by piping connection, three phase separator bottom is equipped with waste water discharge opening and waste oil outlet for the outlet of vacuum pump and the air inlet of three phase separator；Absorbing unit includes adsorption tower, filler in adsorption tower is mineralized waste, and the bottom of adsorption tower is equipped with adsorption tower air inlet, and adsorption tower air inlet is docked with the gas outlet of three phase separator, the top of adsorption tower is equipped with adsorption tower gas outlet, and adsorption tower gas outlet connects escape pipe.The present apparatus has many advantages, such as high efficiency, low cost and stable, while mineralized waste can be turned waste into wealth, and reduces the storage rubbish of landfill yard.
Description
Technical field
The present invention relates to environment remediation technical fields, and in particular to the processing applied to the tail gas that soil vapor extraction generates
Device and exhaust gas treating method.
Background technique
Soil vapor extraction is the based technique for in-situ remediation that one kind effectively removes soil volatile organic matter (VOCs), using true
Sky pump extracts gas from pollution soil layer, so that the organic contamination in pollution soil layer has low cost, high efficiency by extracting discharge
Equal remarkable advantages, are the based technique for in-situ remediation of an emerging soil pollution.
Contain a large amount of VOCs in the tail gas of soil vapor extraction, VOCs (volatile organic compounds) is waved
Hair property organic matter refers under room temperature that saturated vapor pressure is greater than under 70.91Pa, standard atmospheric pressure 101.3kPa boiling point 50~260
DEG C or less and initial boiling point be equal to 250 DEG C of organic compound, or it is any at normal temperatures and pressures can volatilization organic solid or liquid.
VOCs mainly includes hydro carbons, aromatic hydrocarbons, alcohols, ketone, lipid etc., with low boiling point, it is volatile and have penetrating odor and
The features such as toxicity, needs to discharge after processing.
Currently, mainly including two classes for gas phase extracting tail gas disposal technique: one kind is absorption method, mainly by cold
Solidifying, absorption absorbs and the physical measures enrichment and separation VOCs such as UF membrane, after be subject to harmless treatment or recycling, it is another
Class is to convert nontoxic small molecule compound for VOCs by chemical-biologicals measures such as heat, light and microorganisms to be discharged.Its
In, absorption method has many advantages, such as that technical maturity, easy to operate, low energy consumption and effect is high compared to other methods, common adsorbent
The materials such as active charcoal, silica gel and activated alumina.However, existing absorption method is higher using adsorbent cost.
Mineralized waste refers in landfill yard after the several years degrade, and substantially achieves the rubbish of stabilization of state.Mine
Change rubbish to be widely present with the landfill yard of each large and medium-sized surrounding city, there is good cellular structure, huge surface area,
And rich in microorganism and organic matter and the features such as nontoxic, renewable, it is dirty to have been used for handling landfill leachate, life
The various contaminated waste water such as water, waste water of livestock poultry and used water difficult to degradate.
Mineralized waste is directed at present to handle this direction of tail gas be still a blank.
Summary of the invention
In view of the problems of the existing technology, the present invention is provided at the tail gas using mineralized waste processing gas phase extracting tail gas
Device is managed, the high technical problem of the adsorbent cost to solve existing gas phase extracting exhaust gas processing device.
The present invention provides the method using mineralized waste processing gas phase extracting tail gas, to solve at existing gas phase extracting tail gas
Manage the high technical problem of the adsorbent cost of device.
The technical scheme is that using the exhaust gas processing device of mineralized waste processing gas phase extracting tail gas, including it is suitable
The separative unit of sequence connection, absorbing unit and monitoring unit, which is characterized in that the separative unit includes air inlet pipe, vacuum
Pump and three phase separator, the air inlet pipe are the delivery pipe for conveying the tail gas of soil vapor extraction generation, the vacuum
The import of pump is connect with the air inlet pipe, and the outlet of the vacuum pump is connected with the air inlet of the three phase separator by pipeline
It connects, the three phase separator bottom is equipped with waste water discharge opening and waste oil outlet；
The absorbing unit includes adsorption tower, and the filler in the adsorption tower is mineralized waste, the bottom of the adsorption tower
Equipped with adsorption tower air inlet, the adsorption tower air inlet is docked with the gas outlet of the three phase separator, the top of the adsorption tower
Portion is equipped with adsorption tower gas outlet, and the adsorption tower gas outlet connects escape pipe；
The monitoring unit includes VOCs monitoring device, and the sampling head of the VOCs monitoring device is arranged in the escape pipe
It is interior.
This patent takes full advantage of using mineralized waste in landfill yard as the adsorbent of VOCs in absorption gas phase extracting tail gas
Because mineralized waste contains a large amount of primary degrading microorganisms the degradation efficiency for being adsorbed organic matter can be improved, no in the characteristic of mineralized waste
Only mineralized waste is turned waste into wealth, the treatment of wastes with processes of wastes against one another, and can high efficiency, low energy consumption, continuous and steadily removal gas phase extracts tail
VOCs in gas, in addition to this, the mineralized waste rich in microorganism can provide analyst for the biochemical treatment of subsequent adsorbtion organic matter,
Reduce secondary pollution.The present apparatus has many advantages, such as high efficiency, low cost and stable, at the same mineralized waste can be become give up into
Treasured reduces the storage rubbish of landfill yard.
It is further preferred that hollowed-out board, deflector and limiting block are sequentially installed with inside the adsorption tower from bottom to up
Plate is equipped with gap, is the channel flowed through for air-flow with the gap between the deflector and the inner wall of the adsorption tower；
The filler setting offers ventilative between the hollowed-out board and the postive stop baffle, and on the postive stop baffle
Hole.
The hollowed-out board of this patent not only can provide the support of mineralized waste, while the air-flow of diffusion can be evenly distributed to suction
The inside of attached tower.In addition to this, moreover it is possible to provide path to fall residue.By postive stop baffle, mineralized waste can be prevented in gas
Stream effect is lower to move, while guaranteeing airflow.
It is further preferred that the bottom of the adsorption tower offers waste residue outlet.
Adsorption tower setting waste residue outlet can prevent it with the residue fallen on discharger during operation mineralized waste
Blocking adsorption tower leads to plant failure.
It is further preferred that the adsorption tower air inlet is arranged inside the adsorption tower, and it is higher than the waste residue and is discharged
Mouthful.
Residue can be prevented from falling by the air inlet above set and block air inlet, the Diffusion of gas stream plate of setting can effectively by into
Gas diffuses to adsorption tower surrounding.
It is further preferred that the Diffusion of gas stream plate being circumferentially arranged is connected on the outer wall of the adsorption tower air inlet, it is described
The end of Diffusion of gas stream plate is connected with the inner wall of the adsorption tower；
The Diffusion of gas stream plate is obliquely installed, and the gap in all Diffusion of gas stream plates between adjacent Diffusion of gas stream plate is
For channel derived from residue；
The lower section of the hollowed-out board is arranged in the Diffusion of gas stream plate.
Air inlet is effectively diffused into adsorption tower surrounding by Diffusion of gas stream plate.
Preferably, the deflector is provided at least one, the side of the deflector and the fixed company of the inner wall of adsorption tower
It connects, the inner wall of the other side of the deflector and the adsorption tower has gap；
Deflector connection absorption inner wall of tower side to the deflector and absorption inner wall of tower has clearance side diagonally downward.
The deflector being obliquely installed by least one can extend the time of contact of air-flow and mineralized waste, increase mineralising
The adsorption rate of rubbish.
It is further preferred that the angle that the deflector tilts down is 15 °.
It is further preferred that the length of the deflector is set as the 2/3 of the adsorption tower internal diameter.
It is further preferred that the deflector is equipped at least two, at least two deflectors successively alternately connect from top to bottom
Connect the adsorption tower left side and right side.
And then indirect airflow channel, slow flow velocity are formed in inside.
Diffusion of gas stream plate, hollowed-out board and deflector are fixed in adsorption tower, and postive stop baffle is removably mounted at adsorption tower
It is interior.It is also possible to Diffusion of gas stream plate to be fixed in adsorption tower, hollowed-out board, deflector and postive stop baffle are removably mounted at suction
In attached tower.
It is further preferred that the filler of the inside of the adsorption tower is followed successively by least three subregions from top to bottom, and all
The packing material size for the subregion being located above in subregion is less than the packing material size of underlying subregion.
It is the feature different because of mineralized waste particle size itself by particle size layering, mineralized waste is filled up in layering to be made
It obtains its absorption VOCs ability to be not fully exerted, increases adsorption efficiency.
It is further preferred that the adsorption tower is equipped at least two, all adsorption towers are arranged in parallel；
The adsorption tower air inlet of each adsorption tower is mounted on a control valve；
The gas outlet of the three phase separator connects a main line, gas outlet connection and the adsorption tower number of the main line
The branch line to match, each branch line are separately connected an adsorption tower.
This patent can be spaced operation by setting two or more adsorption towers, after an adsorption tower sufficiently adsorbs wherein more
Change another progress device continuous operation, it is ensured that operational efficiency, while the sufficient time is provided for filler in displacement sorption tower, it is convenient
Subsequent microbiological treatment.
It is further preferred that the monitoring unit further includes the exhaust valve for controlling the outlet on-off of escape pipe, the exhaust
Valve is One In and Two Out control valve, another outlet of the one outlet and atmosphere of the control valve, the exhaust valve passes through
One air pump is connected with the main line.
Convenient for being recycled back to another adsorption tower.
The air inlet pipe is equipped with intake valve.
Using the method for mineralized waste processing gas phase extracting tail gas, tail is extracted using mineralized waste processing gas phase using described
The exhaust gas processing device of gas carries out processing absorption to tail gas, includes the following steps:
Step 1: mineralized waste is descending by partial size, from bottom to top, layering is loaded into adsorption tower；
Step 2: air inlet pipe connects gas phase and extracts exhaust emission tube, and guarantees that VOCs monitoring device is in operating status；
Step 3: tail gas is successively imported into separative unit, absorbing unit and monitoring unit, carries out vent gas treatment.
It is directed to the case where at least two adsorption towers are arranged in parallel, the specific steps are as follows:
Step 3: opening the control valve on intake valve and any one adsorption tower, and tail gas successively imports intake valve, vacuum
Pump, three phase separator, unlatching have the adsorption tower and monitoring unit of control valve；
Step 4: observation VOCs monitoring device when VOCs to be shown is exceeded, closes control valve, switches another adsorption tower
On control valve, air-flow is oriented to by the exhaust valve on escape pipe and is switched, air-flow is imported into another adsorption tower for being arranged in parallel
In；
VOCs monitoring device is observed to switch to exhaust valve when VOCs to be shown is normal and be connected with atmosphere；
Step 5: replacing the mineralized waste in the adsorption tower in initial gas circuit, fills up new mineralized waste；
Step 6: circulation step four and step 5 process are until end of run；
Step 7: the waste residue in waste water and waste oil and adsorption tower in discharge three phase separator.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the specific embodiment of the invention 1；
Fig. 2 is a kind of structural schematic diagram of the specific embodiment of the invention 2；
Fig. 3 is a kind of structural schematic diagram of the specific embodiment of the invention 3.
In figure: 1 is air inlet pipe, and 2 be vacuum pump, and 3 be three phase separator, and 4 be waste water discharge opening, and 5 be waste oil outlet, 6
It is adsorption tower for control valve, 7,8 be VOCs monitoring device, and 9 be exhaust valve, and 71 be adsorption tower air inlet, and 72 be waste residue outlet,
73 be Diffusion of gas stream plate, and 74 be hollowed-out board, and 75 be mineralized waste, and 76 be deflector, and 77 be postive stop baffle, and 78 be adsorption tower outlet
Mouthful.
Specific embodiment
Following further describes the present invention with reference to the drawings.
Specific embodiment 1 extracts the exhaust gas processing device of tail gas using mineralized waste processing gas phase referring to Fig. 1, including suitable
The separative unit of sequence connection, absorbing unit and monitoring unit.
Separative unit includes air inlet pipe 1, vacuum pump 2 and three phase separator 3, and air inlet pipe 1 is equipped with intake valve.Air inlet pipe
1 is the delivery pipe for conveying the tail gas that soil vapor extraction generates, and the import of vacuum pump 2 is connect with air inlet pipe 1, vacuum pump 2
Outlet and three phase separator 3 air inlet by piping connection, 3 bottom of three phase separator is equipped with waste water discharge opening 4 and useless
Oily outlet 5.
Absorbing unit includes adsorption tower, and the filler in adsorption tower is mineralized waste, the bottom of adsorption tower 7 be equipped with adsorption tower into
Port, adsorption tower air inlet are docked with the gas outlet of three phase separator 3, and the top of adsorption tower 7 is equipped with adsorption tower gas outlet, absorption
Tower gas outlet connects escape pipe；The bottom of adsorption tower 7 offers waste residue outlet.Adsorption tower setting waste residue outlet can be discharged
The residue that device is fallen on mineralized waste during operation, preventing it from blocking adsorption tower leads to plant failure.Adsorption tower air inlet
It is arranged inside adsorption tower, and is higher than waste residue outlet.It can prevent from falling residue blocking air inlet by the air inlet above set.
Monitoring unit includes VOCs monitoring device 8, and the sampling head of VOCs monitoring device 8 is arranged in escape pipe.
This patent takes full advantage of using mineralized waste in landfill yard as the adsorbent of VOCs in absorption gas phase extracting tail gas
Because mineralized waste contains a large amount of primary degrading microorganisms the degradation efficiency for being adsorbed organic matter can be improved, no in the characteristic of mineralized waste
Only mineralized waste is turned waste into wealth, the treatment of wastes with processes of wastes against one another, and can high efficiency, low energy consumption, continuous and steadily removal gas phase extracts tail
VOCs in gas, in addition to this, the mineralized waste rich in microorganism can provide analyst for the biochemical treatment of subsequent adsorbtion organic matter,
Reduce secondary pollution.The present apparatus has many advantages, such as high efficiency, low cost and stable, at the same mineralized waste can be become give up into
Treasured reduces the storage rubbish of landfill yard.
Monitoring unit further includes the exhaust valve 9 for controlling the outlet on-off of escape pipe.
Adsorption tower is equipped at least two, and all adsorption towers are arranged in parallel；The adsorption tower air inlet of each adsorption tower 7 is pacified
Equipped with a control valve 6；The gas outlet of three phase separator 3 connects a main line, gas outlet connection and the adsorption tower number of main line
The branch line to match, each branch line are separately connected an adsorption tower.
When adsorption tower set there are two when, each adsorption tower 7 adsorption tower air inlet installation control valve 6 can be one into two
Solenoid valve out.
When VOCs monitoring device 8 detect discharge gas it is qualified after, exhaust valve 9 is by exhaust emissions.When VOCs monitoring device 8 is examined
When survey discharge gas is unqualified, tail gas is switched into another adsorption tower by control valve 6 and carries out continuous operation.
The method that vent gas treatment is carried out using the present apparatus, comprising the following steps:
Step 1: mineralized waste is descending by partial size, from bottom to top, layering is loaded into adsorption tower；
Step 2: air inlet pipe 1 connects gas phase and extracts exhaust emission tube, and guarantees 8 operating status of VOCs monitoring device；
Step 3: intake valve is opened, tail gas is imported；
Step 4: observation VOCs monitoring device 8, when VOCs to be shown is exceeded, the guiding switching of control valve 6 imports air-flow
In another adsorption tower being arranged in parallel；
Step 5: replacing the mineralized waste in the adsorption tower in initial gas circuit, and carried out microbiological treatment, fills up new
Mineralized waste；
Step 6: circulation step four and step 5 process are until end of run；
Step 7: the waste residue in waste water and waste oil and adsorption tower in discharge three phase separator 3.
In step 1, mineralized waste is sieved, rejects the sundries such as stone, cullet, rubber, not degradable fabric, it will
Mineralized waste after screening is descending by partial size, from bottom to top, layering is loaded into adsorption tower, such as mineralized waste partial size
Too small available zeolite replaces.
Specific embodiment 2, referring to fig. 2, on the basis of specific embodiment 1, exhaust valve 9 is One In and Two Out control valve 6, control
Another outlet of the one outlet and atmosphere of valve 6 processed, control valve 6 is connected to main line.This patent passes through setting two
Or more adsorption towers can be spaced operation, an adsorption tower replaces another progress device continuous operation wherein after sufficiently adsorbing,
Ensure operational efficiency, while providing the sufficient time for filler in displacement sorption tower, facilitates subsequent microbiological treatment.
An air pump is installed between another outlet of control valve 6 and main line.Convenient for water conservancy diversion.
The method that vent gas treatment is carried out using the present apparatus, comprising the following steps:
Step 1: mineralized waste is descending by partial size, from bottom to top, layering is loaded into adsorption tower；
Step 2: air inlet pipe 1 connects gas phase and extracts exhaust emission tube, and guarantees 8 operating status of VOCs monitoring device；
Step 3: opening the control valve 6 on intake valve and any one adsorption tower, tail gas is successively imported intake valve,
Vacuum pump 2, three phase separator open the adsorption tower and monitoring unit for having control valve 6；
Step 4: observation VOCs monitoring device 8 when VOCs to be shown is exceeded, is closed the control valve 6 that step 3 is opened, is cut
The control valve 6 on another adsorption tower is changed, air-flow is oriented to by the exhaust valve 9 on escape pipe and is switched, air-flow is imported in parallel
In another adsorption tower being arranged；
VOCs monitoring device 8 is observed to switch to exhaust valve 9 when VOCs to be shown is normal and be connected with atmosphere；
Step 5: replacing the mineralized waste in the adsorption tower in initial gas circuit, and carried out microbiological treatment, fills up new
Mineralized waste；
Step 6: circulation step four and step 5 process are until end of run；
Step 7: the waste residue in waste water and waste oil and adsorption tower in discharge three phase separator 3.
In step 1, mineralized waste is sieved, rejects the sundries such as stone, cullet, rubber, not degradable fabric, it will
Mineralized waste after screening is descending by partial size, from bottom to top, layering is loaded into adsorption tower, such as mineralized waste partial size
Too small available zeolite replaces.
Specific embodiment 3 is sequentially installed with hollow out inside adsorption tower on the basis of specific embodiment 1 or 2 from bottom to up
Plate 74, deflector 76 and postive stop baffle 77 are equipped with gap between deflector 76 and the inner wall of adsorption tower, be for gas with gap
The channel that stream flows through；Filler setting offers air hole between hollowed-out board 74 and postive stop baffle 77, and on postive stop baffle 77.This
The hollowed-out board 74 of patent not only can provide the support of mineralized waste 75, while the air-flow of diffusion can be evenly distributed to adsorption tower
It is internal.In addition to this, moreover it is possible to provide path to fall residue.By postive stop baffle 77, mineralized waste 75 can be prevented in air-flow
Effect is lower to move, while guaranteeing airflow.
The Diffusion of gas stream plate 73 being circumferentially arranged, the end of Diffusion of gas stream plate 73 are connected on the outer wall of adsorption tower air inlet 71
It is connected with the inner wall of adsorption tower；Diffusion of gas stream plate 73 is obliquely installed, adjacent Diffusion of gas stream plate in all Diffusion of gas stream plates 73
Gap between 73 is for channel derived from residue；The lower section of hollowed-out board 74 is arranged in Diffusion of gas stream plate 73.Expand by air-flow
It falls apart and 73 air inlet is effectively diffused into adsorption tower surrounding.
Adsorption tower air inlet 71 is arranged inside adsorption tower, and is higher than waste residue outlet 72；And adsorption tower air inlet is arranged
In the lower section of Diffusion of gas stream plate 73.The top of adsorption tower is arranged in adsorption tower gas outlet 78.
Deflector 76 is provided at least one, and the side of deflector 76 is fixedly connected with the inner wall of adsorption tower, deflector 76
The other side and the inner wall of adsorption tower have gap；The connection of deflector 76 absorption inner wall of tower side is to deflector 76 and adsorbs inner wall of tower
There is clearance side diagonally downward.The deflector 76 being obliquely installed by least one can extend connecing for air-flow and mineralized waste 75
The time is touched, the adsorption rate of mineralized waste 75 is increased.The angle that deflector 76 tilts down is 15 °.Deflector 76 is equipped at least two
A, at least two deflectors successively alternately connect on the left of adsorption tower and right side from top to bottom.And then detour gas is formed in inside
Circulation road, slow flow velocity.The length of deflector is set as the 2/3 of the adsorption tower internal diameter.
Diffusion of gas stream plate 73, hollowed-out board 74 and deflector 76 are fixed in adsorption tower, and postive stop baffle 77 is detachably installed
In adsorption tower.It is also possible to Diffusion of gas stream plate 73 to be fixed in adsorption tower, hollowed-out board 74, deflector 76 and postive stop baffle 77
It is removably mounted in adsorption tower.
The filler of the inside of adsorption tower is followed successively by least three subregions from top to bottom, and point being located above in all subregions
The packing material size in area is less than the packing material size of underlying subregion.It is because of the partial size of mineralized waste 75 itself by particle size layering
Feature not of uniform size, mineralized waste 75 is filled up in layering may make it to adsorb VOCs ability and be not fully exerted, and increase absorption effect
Rate.
When being adsorbed using the adsorption tower of the present apparatus to VOCs, the adsorption rate for being directed to different pollutants be see the table below:
| Pollutant title | Concentration (mg/m before handling3) | Concentration (mg/m after processing3) | Removal rate |
| Benzene | 4.7 | 0.4 | 81.4% |
| Toluene and dimethylbenzene | 235.3 | 8.0 | 96.6% |
| Non-methane total hydrocarbons | 1066.7 | 32 | 97.0% |
| Volatile organic matter | 1516.2 | 56.1 | 96.3% |
The above is only the preferred embodiment of the present invention, it is noted that those skilled in the art are come
It says, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (10)
1. using the exhaust gas processing device of mineralized waste processing gas phase extracting tail gas, the separative unit including sequential connection, absorption
Unit and monitoring unit, which is characterized in that the separative unit includes air inlet pipe, vacuum pump and three phase separator, described
Air inlet pipe is the delivery pipe for conveying the tail gas of soil vapor extraction generation, and the import of the vacuum pump and the air inlet pipe connect
It connects, by piping connection, the three phase separator bottom is set for the outlet of the vacuum pump and the air inlet of the three phase separator
There are waste water discharge opening and waste oil outlet；
The absorbing unit includes adsorption tower, and the filler in the adsorption tower is mineralized waste, and the bottom of the adsorption tower is equipped with
Adsorption tower air inlet, the adsorption tower air inlet are docked with the gas outlet of the three phase separator, are set at the top of the adsorption tower
There is adsorption tower gas outlet, the adsorption tower gas outlet connects escape pipe；
The monitoring unit includes VOCs monitoring device, and the sampling head of the VOCs monitoring device is arranged in the escape pipe.
2. the exhaust gas processing device according to claim 1 using mineralized waste processing gas phase extracting tail gas, feature exist
In: be sequentially installed with hollowed-out board, deflector and postive stop baffle inside the adsorption tower from bottom to up, the deflector with it is described
It is equipped with gap between the inner wall of adsorption tower, is the channel flowed through for air-flow with the gap；
The filler setting offers air hole between the hollowed-out board and the postive stop baffle, and on the postive stop baffle；
The bottom of the adsorption tower offers waste residue outlet；
The adsorption tower air inlet is arranged inside the adsorption tower, and is higher than the waste residue outlet.
3. the exhaust gas processing device according to claim 2 using mineralized waste processing gas phase extracting tail gas, feature exist
In: be connected with the Diffusion of gas stream plate being circumferentially arranged on the outer wall of the adsorption tower air inlet, the end of the Diffusion of gas stream plate with
The inner wall of the adsorption tower is connected；
The Diffusion of gas stream plate is obliquely installed, the gap in all Diffusion of gas stream plates between adjacent Diffusion of gas stream plate be for
Channel derived from residue；
The lower section of the hollowed-out board is arranged in the Diffusion of gas stream plate.
4. the exhaust gas processing device according to claim 3 using mineralized waste processing gas phase extracting tail gas, feature exist
In: the deflector is provided at least one, and the side of the deflector is fixedly connected with the inner wall of adsorption tower, the deflector
The other side and the inner wall of the adsorption tower have gap；
Deflector connection absorption inner wall of tower side to the deflector and absorption inner wall of tower has clearance side diagonally downward.
5. the exhaust gas processing device according to claim 4 using mineralized waste processing gas phase extracting tail gas, feature exist
Be equipped at least two in: the deflector, at least two deflectors successively alternately connect from top to bottom on the left of the adsorption tower with
And right side.
6. the exhaust gas processing device according to claim 1 using mineralized waste processing gas phase extracting tail gas, feature exist
In: the filler of the inside of the adsorption tower is followed successively by least three subregions from top to bottom, and point being located above in all subregions
The packing material size in area is less than the packing material size of underlying subregion.
7. the exhaust gas processing device according to claim 1 using mineralized waste processing gas phase extracting tail gas, feature exist
In: the adsorption tower is equipped at least two, and all adsorption towers are arranged in parallel；
The adsorption tower air inlet of each adsorption tower is mounted on a control valve；
The gas outlet of the three phase separator connects a main line, gas outlet connection and the adsorption tower number phase of the main line
The branch line matched, each branch line are separately connected an adsorption tower.
8. the exhaust gas processing device according to claim 7 using mineralized waste processing gas phase extracting tail gas, feature exist
In: the monitoring unit further includes the exhaust valve for controlling the outlet on-off of escape pipe, and the exhaust valve is One In and Two Out control valve,
Another outlet of the one outlet and atmosphere of the control valve, the exhaust valve passes through an air pump and the main line phase
Even.
9. utilizing the method for mineralized waste processing gas phase extracting tail gas, which is characterized in that using any one in claim 1 to 6
The item exhaust gas processing device using mineralized waste processing gas phase extracting tail gas carries out processing absorption to tail gas, including walks as follows
It is rapid:
Step 1: mineralized waste is descending by partial size, from bottom to top, layering is loaded into adsorption tower；
Step 2: air inlet pipe connects gas phase and extracts exhaust emission tube, and guarantees that VOCs monitoring device is in operating status；
Step 3: tail gas is successively imported into separative unit, absorbing unit and monitoring unit, carries out vent gas treatment.
10. the method according to claim 9 using mineralized waste processing gas phase extracting tail gas, which is characterized in that described
Adsorption tower is equipped at least two, and all adsorption towers are arranged in parallel；
The adsorption tower air inlet of each adsorption tower is mounted on a control valve；
The gas outlet of the three phase separator connects a main line, gas outlet connection and the adsorption tower number phase of the main line
The branch line matched, each branch line are separately connected an adsorption tower；
The monitoring unit further includes the exhaust valve for controlling the outlet on-off of escape pipe, and the exhaust valve is One In and Two Out control
Another outlet of valve, the one outlet and atmosphere of the control valve, the exhaust valve passes through an air pump and the supervisor
Road is connected；
Step 3: opening the control valve on intake valve and any one adsorption tower, tail gas successively import intake valve, vacuum pump,
Three phase separator, unlatching have the adsorption tower and monitoring unit of control valve；
Step 4: observation VOCs monitoring device when VOCs to be shown is exceeded, is closed control valve, is switched on another adsorption tower
Air-flow is oriented to by the exhaust valve on escape pipe and is switched by control valve, and air-flow is imported in another adsorption tower being arranged in parallel；
VOCs monitoring device is observed to switch to exhaust valve when VOCs to be shown is normal and be connected with atmosphere；
Step 5: replacing the mineralized waste in the adsorption tower in initial gas circuit, fills up new mineralized waste；
Step 6: circulation step four and step 5 process are until end of run；
Step 7: the waste residue in waste water and waste oil and adsorption tower in discharge three phase separator.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023146399A1 (en) * | 2022-01-28 | 2023-08-03 | Pure Hld B.V. | Air cleaner for removing volatile organic compounds from a flow of process air |
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