CN115671972B - Treatment method for waste gas and waste smoke of asphalt station - Google Patents
Treatment method for waste gas and waste smoke of asphalt station Download PDFInfo
- Publication number
- CN115671972B CN115671972B CN202211152375.0A CN202211152375A CN115671972B CN 115671972 B CN115671972 B CN 115671972B CN 202211152375 A CN202211152375 A CN 202211152375A CN 115671972 B CN115671972 B CN 115671972B
- Authority
- CN
- China
- Prior art keywords
- waste gas
- smoke
- adsorption
- waste
- filter cotton
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002912 waste gas Substances 0.000 title claims abstract description 162
- 239000010426 asphalt Substances 0.000 title claims abstract description 127
- 239000000779 smoke Substances 0.000 title claims abstract description 126
- 239000002699 waste material Substances 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 82
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 226
- 238000001179 sorption measurement Methods 0.000 claims abstract description 162
- 229920000742 Cotton Polymers 0.000 claims abstract description 106
- 239000012209 synthetic fiber Substances 0.000 claims abstract description 56
- 229920002994 synthetic fiber Polymers 0.000 claims abstract description 56
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims abstract description 54
- 238000007084 catalytic combustion reaction Methods 0.000 claims abstract description 48
- 239000000463 material Substances 0.000 claims abstract description 47
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 46
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 46
- 239000007921 spray Substances 0.000 claims abstract description 42
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims abstract description 29
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims abstract description 29
- 239000010419 fine particle Substances 0.000 claims abstract description 29
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000428 dust Substances 0.000 claims abstract description 23
- 239000000126 substance Substances 0.000 claims abstract description 22
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 18
- 238000005516 engineering process Methods 0.000 claims abstract description 11
- 239000000835 fiber Substances 0.000 claims description 79
- 239000007788 liquid Substances 0.000 claims description 37
- 239000000945 filler Substances 0.000 claims description 34
- 239000000843 powder Substances 0.000 claims description 32
- 239000007789 gas Substances 0.000 claims description 30
- 239000003054 catalyst Substances 0.000 claims description 27
- 238000002360 preparation method Methods 0.000 claims description 25
- 238000009960 carding Methods 0.000 claims description 24
- 239000002245 particle Substances 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 19
- 239000003344 environmental pollutant Substances 0.000 claims description 19
- 231100000719 pollutant Toxicity 0.000 claims description 19
- 229920001225 polyester resin Polymers 0.000 claims description 19
- 239000004645 polyester resin Substances 0.000 claims description 19
- 229920005749 polyurethane resin Polymers 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 16
- 239000003517 fume Substances 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 10
- 238000007493 shaping process Methods 0.000 claims description 10
- 230000003213 activating effect Effects 0.000 claims description 9
- 238000010000 carbonizing Methods 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 9
- 229910052878 cordierite Inorganic materials 0.000 claims description 9
- 238000013461 design Methods 0.000 claims description 9
- 238000003795 desorption Methods 0.000 claims description 9
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 230000005684 electric field Effects 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- 150000002500 ions Chemical class 0.000 claims description 9
- 238000004898 kneading Methods 0.000 claims description 9
- 229920000609 methyl cellulose Polymers 0.000 claims description 9
- 239000001923 methylcellulose Substances 0.000 claims description 9
- 235000010981 methylcellulose Nutrition 0.000 claims description 9
- 229910000510 noble metal Inorganic materials 0.000 claims description 9
- 230000010355 oscillation Effects 0.000 claims description 9
- 229910052763 palladium Inorganic materials 0.000 claims description 9
- 229910052697 platinum Inorganic materials 0.000 claims description 9
- 238000007670 refining Methods 0.000 claims description 9
- 229920006395 saturated elastomer Polymers 0.000 claims description 9
- 238000000227 grinding Methods 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 239000003595 mist Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 3
- 230000004913 activation Effects 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000010828 elution Methods 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 32
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 24
- 238000005507 spraying Methods 0.000 description 18
- 238000000746 purification Methods 0.000 description 11
- 125000004429 atom Chemical group 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- 239000011148 porous material Substances 0.000 description 8
- 230000035484 reaction time Effects 0.000 description 8
- 230000003068 static effect Effects 0.000 description 8
- 239000011800 void material Substances 0.000 description 8
- 239000012855 volatile organic compound Substances 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 7
- 230000003197 catalytic effect Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 239000011269 tar Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000010815 organic waste Substances 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- FMMWHPNWAFZXNH-UHFFFAOYSA-N Benz[a]pyrene Chemical compound C1=C2C3=CC=CC=C3C=C(C=C3)C2=C2C3=CC=CC2=C1 FMMWHPNWAFZXNH-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000000711 cancerogenic effect Effects 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006303 photolysis reaction Methods 0.000 description 2
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to a method for treating waste gas and waste smoke of an asphalt station, and belongs to the technical field of environmental engineering waste gas treatment. According to the invention, the waste gas and smoke of the asphalt station are subjected to spray tower elution to remove fine particles, then enter an oil and water removing device to remove oil and water through a plasma technology, enter a screen filter to remove smoke and dust, then enter an active carbon adsorption box to adsorb organic substances, and the desorbed organic substances enter a catalytic combustion device to be thoroughly purified. The wire mesh filter is made of gamma-Al 2 O 3 The synthetic fiber filter cotton is a primary filter cotton of a filter material and the carbon nano tube synthetic fiber filter cotton is a medium-effect filter cotton of the filter material, so that the filter efficiency is high, the equipment size can be reduced, the replacement is convenient, and the service life of the filter cotton is prolonged due to high dust holding capacity; the active carbon adsorption box is made of rosin and gamma-Al 2 O 3 The high-adsorption honeycomb activated carbon compounded with the honeycomb activated carbon is used as an adsorption material, so that the specific surface area of the adsorption material and the adsorption rate of organic substances can be improved.
Description
Technical Field
The invention belongs to the technical field of environmental engineering waste gas treatment, and relates to a waste gas and waste smoke treatment method for an asphalt station.
Background
The asphalt waste gas mainly comprises asphalt tar, asphalt smoke, liquid tar, gaseous tar, aromatic hydrocarbon, heterocyclic compound and other unpleasant gases, dust and micromolecular substances generated in the powder adding process. The modified asphalt waste gas has the characteristics of heavy smell and long service life of polycyclic aromatic hydrocarbon. Asphalt fume is aerosol and vapor produced by asphalt heating and burning of asphalt-containing substances, and volatile matters in asphalt fume are discharged into the atmosphere to become one of atmospheric pollutants. Asphalt smoke waste gas is generally mixed with smoke dust with a certain concentration, is brown or black, and has strong stimulation effect. The compounds containing more than 6 carbon atoms have cancerogenic action on skin and respiratory system, and the study and animal experiments prove that benzopyrene extracted from coal tar, asphalt and organic solvent is a strong cancerogenic substance. At present, the treatment of asphalt fume mainly comprises a plasma method, a uv photodecomposition method, a combustion method and other treatment methods, wherein the plasma method and the uv photodecomposition method are both to treat the asphalt fume by adopting electricity and light, the potential safety hazard of combustion explosion exists, and the combustion method is to contact and combust combustible substances contained in the asphalt fume with air at a certain temperature.
Patent CN101776273a discloses a method for efficiently treating asphalt flue gas, which adopts calcined flue gas of a post-combustion chamber of a rotary kiln, so that asphalt flue gas produced by manufacturing a raw anode passes through the post-combustion chamber of the rotary kiln, tar and polycyclic aromatic hydrocarbon in the asphalt flue gas in the post-combustion chamber of the rotary kiln are decomposed and combusted, and benzopyrene harmful substances are effectively removed, but the method has the defects of high energy consumption, low economy, secondary pollution and environmental protection.
Patent CN105771582a discloses a method for treating waste gas produced by modified asphalt waterproof material, wherein asphalt waste gas is treated by a high-speed centrifugal gas-liquid separator, liquid Jiao Youlei liquid is trapped by inertia, the treated waste gas is treated by a cross-flow bed adsorption process, and finally, peculiar smell is further eliminated by ozone deep oxidation. The patent uses a purification method combining centrifugal separation and cross-flow bed adsorption.
Patent publication number CN109692561a discloses a method for purifying modified asphalt waste gas by catalytic oxidation, wherein the modified asphalt waste gas is first atomized by an atomization device, then particles are removed by an adsorption device, then the oxidant is fully mixed with the waste gas by an oxidant mixed flow device, oxidation reaction occurs in the oxidation device, and finally the mixture is conveyed to a catalytic device, so that the oxidant and water are subjected to deep oxidation on organic matters under the action of a catalyst, and clean gas is discharged outside through a fan. The invention utilizes the fact that particles in the atomized modified asphalt waste gas are more easily trapped, then are adsorbed, and finally are subjected to catalytic oxidation, and does not disclose the technical scheme of the invention for adsorbing the filter cotton and the high-adsorption honeycomb activated carbon.
Patent publication No. CN105536436A discloses a method for purifying organic waste gas generated by asphalt processing, which comprises the steps of collecting the organic waste gas, and then carrying out secondary spray absorption and activated carbon adsorption purification. The invention combines the technical scheme of spraying and active carbon adsorption to purify organic waste gas, and does not disclose the technical scheme of filter cotton and high-adsorption honeycomb active carbon adsorption in the invention.
Patent publication number CN109985503a discloses a process for purifying and treating asphalt fume exhaust gas, which comprises the following specific steps: under the action of a draught fan, conveying the asphalt fume and waste gas into a countercurrent atomizing alkali spray tower at a low gas speed, performing first-step treatment on the asphalt fume and waste gas by using alkaline water, conveying the asphalt fume and waste gas into a countercurrent purifying and washing tower for water washing and purifying, conveying the asphalt fume and waste gas into a three-phase multi-medium catalytic oxidation tower, passing through a packing layer in the tower from bottom to top, spraying hydrogen peroxide and ferrous sulfate into a liquid phase in the tower by using a dosing tank outside the tower, and adjusting the pH value to purify the final gas and discharging the final gas at high altitude. The technical scheme disclosed by the invention is an exhaust gas purification process combining alkali spraying, water washing purification and catalytic oxidation, and the technical scheme of filter cotton and high-adsorption honeycomb activated carbon adsorption in the invention is not disclosed.
Disclosure of Invention
The invention aims to provide a treatment method for waste gas and waste smoke of an asphalt station, which is characterized in that the waste gas and waste smoke of the asphalt station are subjected to fine particle elution through a spray tower, then enter an oil and water removing device to remove oil and water through a plasma technology, then enter a screen filter to remove smoke and dust, then enter an active carbon adsorption box to adsorb organic substances, and the desorbed organic substances enter a catalytic combustion device to be thoroughly purified. The wire mesh filter is made of gamma-Al 2 O 3 The synthetic fiber filter cotton is a primary filter cotton of a filter material and the carbon nano tube synthetic fiber filter cotton is a medium-effect filter cotton of the filter material, so that the filter efficiency is high, the equipment size can be reduced, the replacement is convenient, the service life of the filter cotton is prolonged due to high dust holding capacity, and the filter cotton is energy-saving and environment-friendly; the active carbon adsorption box is made of rosin and gamma-Al 2 O 3 The high-adsorption honeycomb activated carbon compounded with the honeycomb activated carbon is used as an adsorption material, so that the specific surface area of the adsorption material and the adsorption rate of organic substances can be improved; the removal rate of VOCs in the waste gas and waste smoke treatment process of the asphalt station can reach more than 99%.
The aim of the invention can be achieved by the following technical scheme:
a method for treating waste gas and smoke from an asphalt station, the method comprising the steps of:
(1) Waste gas and smoke of the asphalt station enter a spray tower through a draught fan, and fine particles are sprayed and eluted through the spray tower;
(2) The waste gas and waste smoke from which fine particles are eluted enters a deoiling and defogging device, and oil and water in the waste gas and waste smoke are removed through a plasma technology of the deoiling and defogging device;
(3) The waste gas and the waste smoke after removing the oil and the water enter a silk screen filter to further filter the smoke and the dust to obtain the waste gas of the asphalt station containing organic matters;
(4) Waste gas from asphalt station enters an active carbon adsorption box, wherein the active carbon adsorption box is formed by rosin and gamma-Al 2 O 3 The high-adsorption honeycomb activated carbon compounded with the honeycomb activated carbon is used as an adsorption material for adsorbing organic substances in the waste gas of the asphalt station, and clean gas is discharged;
(5) Stopping sucking the waste gas of the asphalt station when the organic matters in the adsorption box reach a saturated state, desorbing the organic matters in the adsorption box, and thoroughly purifying the organic matters in the adsorption box by a catalytic combustion device and then discharging the organic matters.
As a preferable technical scheme of the invention, the spray nozzles at the upper end of the spray tower spray the absorption liquid uniformly distributed on the filler, and the waste gas and the waste smoke of the asphalt station are contacted with the absorption liquid on the surface of the filler, so that the aim of eluting fine particles in the waste gas and the waste smoke of the asphalt station is fulfilled by utilizing the characteristics of high mechanical strength, corrosion resistance, high void ratio and large surface of the filler, and the waste gas and the waste smoke of the asphalt station have more contact area and reaction time with the absorption liquid on the surface of the filler.
As a preferable technical scheme of the invention, the oil and mist removing device in the step (2) adopts 220V or 380V alternating current, a high-frequency pulse electric field is obtained through an oscillation boosting device, when the voltage reaches the discharge voltage of waste gas and waste smoke, gas is broken down, active particles comprising high-energy electrons, ions, atoms and free radicals are generated, and the active particles are utilized to further act with pollutants in the waste gas and waste smoke, so that pollutant molecules are decomposed, and the purposes of oil and mist removing are achieved.
As a preferable technical scheme of the invention, the silk screen filter in the step (3) consists of primary filter cotton and intermediate filter cotton, wherein the primary filter cotton adopts gamma-Al 2 O 3 The synthetic fiber filter cotton is a filter material, and the medium-efficiency filter cotton takes the carbon nano tube synthetic fiber filter cotton as the filter material.
As a preferable technical scheme of the invention, the gamma-Al 2 O 3 The preparation method of the synthetic fiber filter cotton comprises the following steps:
the agglomerated polyester resin fibers are subjected to a powerful opening procedure to be opened, the fibers are carded into fibers with uniform thickness, and gamma-Al is implanted in the carding process of the fibers 2 O 3 Powder, gamma-Al 2 O 3 The addition of the powder accounts for 10 to 20 percent of the weight of the polyester resin fiber, the polyester resin fiber is laid into a net layer, then the net layer is heated to 200 to 220 ℃, and finally the gamma-Al is obtained after cooling and shaping 2 O 3 Synthetic fiber filter cotton.
As a preferable technical scheme of the invention, the preparation method of the carbon nano tube synthetic fiber filter cotton comprises the following steps:
the method comprises the steps of opening agglomerated polyurethane resin fibers through a strong opening process, carding the fibers into fibers with uniform thickness, implanting carbon nanotube powder in the carding process of the fibers, wherein the addition amount of the carbon nanotubes accounts for 5-9% of the weight of the polyurethane resin fibers, paving the polyurethane resin fibers into a mesh layer, heating the mesh layer to 250-270 ℃, and finally cooling and shaping the mesh layer to obtain the carbon nanotube synthetic fiber filter cotton.
As a preferable technical scheme of the invention, 3 adsorption beds are set in the activated carbon adsorption box in the step (4), and the design air quantity of a single bed is 10000m 3 And/h, performing automatic switching of adsorption and desorption when the main fan works.
As a preferable technical scheme of the invention, the preparation method of the high-adsorption honeycomb activated carbon in the step (4) comprises the following steps:
crushing and grinding rosin resin to above 120 meshes, mixing the ground rosin with gamma-Al 2 O 3 Mixing powder, powdered activated carbon and methyl cellulose according to the weight ratio of 55-70:8-15:100:20-30, kneading and refining at 90-120 ℃ to obtain a plasticizing material, then extruding and molding in a honeycomb die and drying to obtain a honeycomb blank, carbonizing the honeycomb blank at 500-700 ℃, cooling, and then placing the honeycomb blank in a cremator at 750-850 ℃ for activating for 0.5-1 h to obtain the high-adsorption honeycomb activated carbon.
As a preferable technical scheme of the invention, the catalyst adopted by the catalytic combustion device in the step (5) is a TFJF catalyst, namely cordierite honeycomb ceramics is adopted as a first carrier, and gamma-Al is adopted as a catalyst 2 O 3 The noble metals Pd and Pt are used as active components.
As a preferable technical scheme of the invention, the temperature of the catalytic combustion device in the step (5) is 250-300 ℃, and the heat generated by catalytic combustion is used for desorbing organic matters in the adsorption box, so that the energy is recycled.
The invention has the beneficial effects that:
(1) The invention filters the waste gas and smoke passing through the spray tower and the oil and mist removing device by a silk screen filter, wherein the silk screen filter is formed by gamma-Al 2 O 3 The synthetic fiber filter cotton is a primary filter cotton of a filter material and the carbon nano tube synthetic fiber filter cotton is a medium-efficiency filter cotton of a filter material, and gamma-Al is adopted respectively 2 O 3 The filter cotton has stronger adsorption capacity and larger porosity due to the combination of the carbon nano tube and the polyester resin fiber and the combination of the carbon nano tube and the polyurethane resin fiber, so that the resistance is small, the dust holding capacity is large, and the service life of the silk screen filter can be prolonged finally, and the service life of the silk screen filter is longer than 6000 hours, and is energy-saving and environment-friendly;
(2) The high adsorption honeycomb activated carbon in the activated carbon adsorption box is prepared by rosin and gamma-Al 2 O 3 Compounding with honeycomb active carbon to make the high adsorption honeycomb active carbon have large specific surface area and fine poresThe volume is large, and the adsorption capacity is strong; the specific surface area of the high-adsorption honeycomb activated carbon is more than 800m 2 Per gram, pore volume greater than 0.3ml/g, static benzene adsorption rate greater than 40%;
(3) The heat generated by catalytic combustion in the catalytic combustion device is used for desorbing organic matters in the adsorption box, and the energy is recycled;
(4) The invention adopts the gamma-Al 2 O 3 The primary filter cotton with synthetic fiber filter cotton as filter material and the intermediate filter cotton with carbon nanotube synthetic fiber filter cotton as filter material are filtered to remove residual smoke and dust after spraying, deoiling and demisting, and then the smoke and dust are filtered by rosin and gamma-Al 2 O 3 The high-adsorption honeycomb activated carbon obtained by compounding the high-adsorption honeycomb activated carbon is used for adsorbing organic substances, and finally desorbed organic substances are thoroughly purified by catalytic combustion.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
FIG. 1 is a flow chart of the treatment process of the waste gas and the waste smoke of the asphalt station in the embodiment 1 of the invention.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.
Example 1
Referring to fig. 1, a method for treating waste gas and waste smoke of an asphalt station comprises the following steps:
(1) Enabling waste gas and waste smoke of the asphalt station to enter a spray tower through a draught fan, spraying and eluting fine particles through the spray tower, spraying an absorption liquid by a spray head at the upper end of the spray tower, uniformly distributing the absorption liquid on a filler, and enabling the waste gas and waste smoke of the asphalt station to contact with the absorption liquid on the surface of the filler, wherein the characteristics of high mechanical strength, corrosion resistance, high void ratio and large surface of the filler are utilized, and the waste gas and waste smoke of the asphalt station and the absorption liquid have more contact area and reaction time on the surface of the filler so as to achieve the aim of eluting the fine particles in the waste gas and waste smoke of the asphalt station;
(2) The waste gas and waste smoke from which fine particles are eluted enter a deoiling and defogging device, oil and water in the waste gas and waste smoke are removed through a plasma technology of the deoiling and defogging device, the deoiling and defogging device adopts 220V or 380V alternating current, a high-frequency pulse electric field is obtained through an oscillation boosting device, when the voltage reaches the discharge voltage of the waste gas and waste smoke, gas is broken down, active particles comprising high-energy electrons, ions, atoms and free radicals are generated, and the active particles are utilized to further act with pollutants in the waste gas and waste smoke, so that pollutant molecules are decomposed, and the purpose of deoiling and defogging is achieved;
(3) The waste gas and the waste smoke after removing the oil and the water enter a silk screen filter to further filter the smoke and the dust to obtain the waste gas of the asphalt station containing organic matters; the silk screen filter consists of primary filter cotton and intermediate filter cotton, wherein the primary filter cotton adopts gamma-Al 2 O 3 The synthetic fiber filter cotton is a filter material, and the medium-efficiency filter cotton takes carbon nano tube synthetic fiber filter cotton as a filter material;
the gamma-Al 2 O 3 The preparation method of the synthetic fiber filter cotton comprises the following steps:
the agglomerated polyester resin fibers are subjected to a powerful opening procedure to be opened, the fibers are carded into fibers with uniform thickness, and gamma-Al is implanted in the carding process of the fibers 2 O 3 Powder, gamma-Al 2 O 3 The powder accounts for 16 percent of the weight of the polyester resin fiber, and is laid into a net layer, then heated to 220 ℃, and finally cooled and shaped to obtain the gamma-Al 2 O 3 Synthetic fiber filter cotton;
the preparation method of the carbon nano tube synthetic fiber filter cotton comprises the following steps:
opening the agglomerated polyurethane resin fibers through a strong opening process, carding the fibers into fibers with uniform thickness, implanting carbon nanotube powder in the carding process of the fibers, wherein the addition amount of the carbon nanotubes accounts for 8% of the weight of the polyurethane resin, paving a net layer, heating to 265 ℃, and finally cooling and shaping to obtain carbon nanotube synthetic fiber filter cotton;
The screen filter has small resistance, large dust holding capacity and service life up to 7500h;
(4) The waste gas of the asphalt station enters an activated carbon adsorption box, 3 adsorption beds are set in the activated carbon adsorption box, and the design air quantity of a single bed is 10000m 3 And/h, automatically switching adsorption and desorption when the main fan works, wherein the active carbon adsorption box is formed by rosin and gamma-Al 2 O 3 The high-adsorption honeycomb activated carbon compounded with the honeycomb activated carbon is used as an adsorption material for adsorbing organic substances in the waste gas of the asphalt station, and clean gas is discharged; the preparation method of the high-adsorption honeycomb activated carbon comprises the following steps:
crushing and grinding rosin resin to above 120 meshes, mixing the ground rosin with gamma-Al 2 O 3 Mixing powder, powdered activated carbon and methyl cellulose according to a weight ratio of 55:9:100:24, kneading and refining at 100 ℃ to obtain a plasticizing material, then extruding and forming in a honeycomb die, drying to obtain a honeycomb blank, carbonizing the honeycomb blank at 550 ℃, cooling, and then placing the honeycomb blank in a cremator at 850 ℃ for activating for 0.8h to obtain the high-adsorption honeycomb activated carbon;
the specific surface area of the high-adsorption honeycomb activated carbon reaches 820m 2 Per gram, the pore volume reaches 0.38ml/g, and the static benzene adsorption rate reaches 49%;
(5) Stopping sucking the waste gas of the asphalt station when the organic matters in the adsorption box reach a saturated state, desorbing the organic matters in the adsorption box, and thoroughly purifying the organic matters in the adsorption box by a catalytic combustion device, and then discharging the organic matters, wherein the catalytic combustion device adopts a catalyst which is a TFJF (reverse flow reaction) catalyst, namely cordierite honeycomb ceramics is adopted as a first carrier, and gamma-Al is adopted as a catalyst 2 O 3 The catalytic combustion device is a second carrier, noble metals Pd and Pt are used as active components, the temperature of the catalytic combustion device is 250-300 ℃, heat generated by catalytic combustion is used for desorbing organic matters in an adsorption box, energy is recycled, and energy sources are saved; through the purification treatment process of the embodiment, the removal rate of VOCs in waste gas and waste smoke of the asphalt station can reach 99.7 percent.
Example 2
A method for treating waste gas and smoke from an asphalt station, the method comprising the steps of:
(1) Enabling waste gas and waste smoke of the asphalt station to enter a spray tower through a draught fan, spraying and eluting fine particles through the spray tower, spraying an absorption liquid by a spray head at the upper end of the spray tower, uniformly distributing the absorption liquid on a filler, and enabling the waste gas and waste smoke of the asphalt station to contact with the absorption liquid on the surface of the filler, wherein the characteristics of high mechanical strength, corrosion resistance, high void ratio and large surface of the filler are utilized, and the waste gas and waste smoke of the asphalt station and the absorption liquid have more contact area and reaction time on the surface of the filler so as to achieve the aim of eluting the fine particles in the waste gas and waste smoke of the asphalt station;
(2) The waste gas and waste smoke from which fine particles are eluted enter a deoiling and defogging device, oil and water in the waste gas and waste smoke are removed through a plasma technology of the deoiling and defogging device, the deoiling and defogging device adopts 220V or 380V alternating current, a high-frequency pulse electric field is obtained through an oscillation boosting device, when the voltage reaches the discharge voltage of the waste gas and waste smoke, gas is broken down, active particles comprising high-energy electrons, ions, atoms and free radicals are generated, and the active particles are utilized to further act with pollutants in the waste gas and waste smoke, so that pollutant molecules are decomposed, and the purpose of deoiling and defogging is achieved;
(3) The waste gas and the waste smoke after removing the oil and the water enter a silk screen filter to further filter the smoke and the dust to obtain the waste gas of the asphalt station containing organic matters; the silk screen filter consists of primary filter cotton and intermediate filter cotton, wherein the primary filter cotton adopts gamma-Al 2 O 3 The synthetic fiber filter cotton is a filter material, and the medium-efficiency filter cotton takes carbon nano tube synthetic fiber filter cotton as a filter material;
the gamma-Al 2 O 3 The preparation method of the synthetic fiber filter cotton comprises the following steps:
the agglomerated polyester resin fibers are subjected to a powerful opening procedure to be opened, the fibers are carded into fibers with uniform thickness, and gamma-Al is implanted in the carding process of the fibers 2 O 3 Powder, gamma-Al 2 O 3 The powder accounts for 11 percent of the weight of the polyester resin fiber, and is laid into a net layer, then heated to 210 ℃, and finally cooled and shaped to obtain the gamma-Al 2 O 3 Synthetic fiber filter cotton;
the preparation method of the carbon nano tube synthetic fiber filter cotton comprises the following steps:
opening the agglomerated polyurethane resin fibers through a strong opening process, carding the fibers into fibers with uniform thickness, implanting carbon nanotube powder in the carding process of the fibers, wherein the addition amount of the carbon nanotubes accounts for 6% of the weight of the polyurethane resin, paving a net layer, heating to 270 ℃, and finally cooling and shaping to obtain carbon nanotube synthetic fiber filter cotton;
The screen filter has small resistance, large dust holding capacity and long service life of 6800h;
(4) The waste gas of the asphalt station enters an activated carbon adsorption box, 3 adsorption beds are set in the activated carbon adsorption box, and the design air quantity of a single bed is 10000m 3 And/h, automatically switching adsorption and desorption when the main fan works, wherein the active carbon adsorption box is formed by rosin and gamma-Al 2 O 3 The high-adsorption honeycomb activated carbon compounded with the honeycomb activated carbon is used as an adsorption material for adsorbing organic substances in the waste gas of the asphalt station, and clean gas is discharged; the preparation method of the high-adsorption honeycomb activated carbon comprises the following steps:
crushing and grinding rosin resin to above 120 meshes, mixing the ground rosin with gamma-Al 2 O 3 Mixing powder, powdered activated carbon and methyl cellulose according to a weight ratio of 61:11:100:21, kneading and refining at 120 ℃ to obtain a plasticizing material, then extruding and forming in a honeycomb die, drying to obtain a honeycomb blank, carbonizing the honeycomb blank at 650 ℃, cooling, and then placing the honeycomb blank in a cremator at 800 ℃ for activating for 0.6h to obtain the high-adsorption honeycomb activated carbon;
the specific surface area of the high-adsorption honeycomb activated carbon reaches 809m 2 Per gram, the pore volume reaches 0.32ml/g, and the static benzene adsorption rate reaches 46%;
(5) Stopping sucking the waste gas of the asphalt station when the organic matters in the adsorption box reach a saturated state, desorbing the organic matters in the adsorption box, and thoroughly purifying the organic matters in the adsorption box by a catalytic combustion device, and then discharging the organic matters, wherein the catalytic combustion device adopts a catalyst which is a TFJF (reverse flow reaction) catalyst, namely cordierite honeycomb ceramics is adopted as a first carrier, and gamma-Al is adopted as a catalyst 2 O 3 The catalytic combustion device is a second carrier, noble metals Pd and Pt are used as active components, the temperature of the catalytic combustion device is 250-300 ℃, heat generated by catalytic combustion is used for desorbing organic matters in an adsorption box, energy is recycled, and energy sources are saved; through the purification treatment process of the embodiment, the removal rate of VOCs in waste gas and waste smoke of the asphalt station can reach 99.3 percent.
Example 3
A method for treating waste gas and smoke from an asphalt station, the method comprising the steps of:
(1) Enabling waste gas and waste smoke of the asphalt station to enter a spray tower through a draught fan, spraying and eluting fine particles through the spray tower, spraying an absorption liquid by a spray head at the upper end of the spray tower, uniformly distributing the absorption liquid on a filler, and enabling the waste gas and waste smoke of the asphalt station to contact with the absorption liquid on the surface of the filler, wherein the characteristics of high mechanical strength, corrosion resistance, high void ratio and large surface of the filler are utilized, and the waste gas and waste smoke of the asphalt station and the absorption liquid have more contact area and reaction time on the surface of the filler so as to achieve the aim of eluting the fine particles in the waste gas and waste smoke of the asphalt station;
(2) The waste gas and waste smoke from which fine particles are eluted enter a deoiling and defogging device, oil and water in the waste gas and waste smoke are removed through a plasma technology of the deoiling and defogging device, the deoiling and defogging device adopts 220V or 380V alternating current, a high-frequency pulse electric field is obtained through an oscillation boosting device, when the voltage reaches the discharge voltage of the waste gas and waste smoke, gas is broken down, active particles comprising high-energy electrons, ions, atoms and free radicals are generated, and the active particles are utilized to further act with pollutants in the waste gas and waste smoke, so that pollutant molecules are decomposed, and the purpose of deoiling and defogging is achieved;
(3) The waste gas and the waste smoke after removing the oil and the water enter a silk screen filter to further filter the smoke and the dust to obtain the waste gas of the asphalt station containing organic matters; the silk screen filter consists of primary filter cotton and intermediate filter cotton, wherein the primary filter cotton adopts gamma-Al 2 O 3 The synthetic fiber filter cotton is a filter material, and the medium-efficiency filter cotton takes carbon nano tube synthetic fiber filter cotton as a filter material;
the gamma-Al 2 O 3 Synthetic fiber filter cottonThe preparation method of (2) comprises the following steps:
the agglomerated polyester resin fibers are subjected to a powerful opening procedure to be opened, the fibers are carded into fibers with uniform thickness, and gamma-Al is implanted in the carding process of the fibers 2 O 3 Powder, gamma-Al 2 O 3 The powder accounts for 12 percent of the weight of the polyester resin fiber, and is laid into a net layer, then heated to 200 ℃, and finally cooled and shaped to obtain the gamma-Al 2 O 3 Synthetic fiber filter cotton;
the preparation method of the carbon nano tube synthetic fiber filter cotton comprises the following steps:
opening the agglomerated polyurethane resin fibers through a strong opening process, carding the fibers into fibers with uniform thickness, implanting carbon nanotube powder in the carding process of the fibers, wherein the addition amount of the carbon nanotubes accounts for 5% of the weight of the polyurethane resin, paving a net layer, heating to 255 ℃, and finally cooling and shaping to obtain carbon nanotube synthetic fiber filter cotton;
The screen filter has small resistance, large dust holding capacity and long service life of 6900h;
(4) The waste gas of the asphalt station enters an activated carbon adsorption box, 3 adsorption beds are set in the activated carbon adsorption box, and the design air quantity of a single bed is 10000m 3 And/h, automatically switching adsorption and desorption when the main fan works, wherein the active carbon adsorption box is formed by rosin and gamma-Al 2 O 3 The high-adsorption honeycomb activated carbon compounded with the honeycomb activated carbon is used as an adsorption material for adsorbing organic substances in the waste gas of the asphalt station, and clean gas is discharged; the preparation method of the high-adsorption honeycomb activated carbon comprises the following steps:
crushing and grinding rosin resin to above 120 meshes, mixing the ground rosin with gamma-Al 2 O 3 Mixing the powder, the powdered activated carbon and the methylcellulose according to the weight ratio of 70:14:100:27, kneading and refining at 100 ℃ to obtain a plasticizing material, then extruding and forming in a honeycomb die, drying to obtain a honeycomb blank, carbonizing the honeycomb blank at 700 ℃, cooling, and activating for 0.5h at 750 ℃ in a cremator to obtain the high-adsorption honeycomb activated carbon;
the high adsorption honeycomb active carbon proportion meterThe area reaches 831m 2 Per gram, the pore volume reaches 0.37ml/g, and the static benzene adsorption rate reaches 45%;
(5) Stopping sucking the waste gas of the asphalt station when the organic matters in the adsorption box reach a saturated state, desorbing the organic matters in the adsorption box, and thoroughly purifying the organic matters in the adsorption box by a catalytic combustion device, and then discharging the organic matters, wherein the catalytic combustion device adopts a catalyst which is a TFJF (reverse flow reaction) catalyst, namely cordierite honeycomb ceramics is adopted as a first carrier, and gamma-Al is adopted as a catalyst 2 O 3 The catalytic combustion device is a second carrier, noble metals Pd and Pt are used as active components, the temperature of the catalytic combustion device is 250-300 ℃, heat generated by catalytic combustion is used for desorbing organic matters in an adsorption box, energy is recycled, and energy sources are saved; through the purification treatment process of the embodiment, the removal rate of VOCs in waste gas and waste smoke of the asphalt station can reach 99.5 percent.
Comparative example 1
A method for treating waste gas and smoke from an asphalt station, the method comprising the steps of:
(1) Enabling waste gas and waste smoke of the asphalt station to enter a spray tower through a draught fan, spraying and eluting fine particles through the spray tower, spraying an absorption liquid by a spray head at the upper end of the spray tower, uniformly distributing the absorption liquid on a filler, and enabling the waste gas and waste smoke of the asphalt station to contact with the absorption liquid on the surface of the filler, wherein the characteristics of high mechanical strength, corrosion resistance, high void ratio and large surface of the filler are utilized, and the waste gas and waste smoke of the asphalt station and the absorption liquid have more contact area and reaction time on the surface of the filler so as to achieve the aim of eluting the fine particles in the waste gas and waste smoke of the asphalt station;
(2) The waste gas and waste smoke from which fine particles are eluted enter a deoiling and defogging device, oil and water in the waste gas and waste smoke are removed through a plasma technology of the deoiling and defogging device, the deoiling and defogging device adopts 220V or 380V alternating current, a high-frequency pulse electric field is obtained through an oscillation boosting device, when the voltage reaches the discharge voltage of the waste gas and waste smoke, gas is broken down, active particles comprising high-energy electrons, ions, atoms and free radicals are generated, and the active particles are utilized to further act with pollutants in the waste gas and waste smoke, so that pollutant molecules are decomposed, and the purpose of deoiling and defogging is achieved;
(3) The waste gas and the waste smoke after removing the oil and the water enter a silk screenThe filter further filters out smoke and dust to obtain asphalt station waste gas containing organic matters; the silk screen filter consists of primary filter cotton and middle-effect filter cotton, wherein the primary filter cotton and the middle-effect filter cotton are both made of gamma-Al 2 O 3 The synthetic fiber filter cotton is a filter material;
the gamma-Al 2 O 3 The preparation method of the synthetic fiber filter cotton comprises the following steps:
the agglomerated polyester resin fibers are subjected to a powerful opening procedure to be opened, the fibers are carded into fibers with uniform thickness, and gamma-Al is implanted in the carding process of the fibers 2 O 3 Powder, gamma-Al 2 O 3 The powder accounts for 16 percent of the weight of the polyester resin fiber, and is laid into a net layer, then heated to 220 ℃, and finally cooled and shaped to obtain the gamma-Al 2 O 3 Synthetic fiber filter cotton;
the service life of the silk screen filter is 5200h;
(4) The waste gas of the asphalt station enters an activated carbon adsorption box, 3 adsorption beds are set in the activated carbon adsorption box, and the design air quantity of a single bed is 10000m 3 And/h, automatically switching adsorption and desorption when the main fan works, wherein the active carbon adsorption box is formed by rosin and gamma-Al 2 O 3 The high-adsorption honeycomb activated carbon compounded with the honeycomb activated carbon is used as an adsorption material for adsorbing organic substances in the waste gas of the asphalt station, and clean gas is discharged; the preparation method of the high-adsorption honeycomb activated carbon comprises the following steps:
Crushing and grinding rosin resin to above 120 meshes, mixing the ground rosin with gamma-Al 2 O 3 Mixing powder, powdered activated carbon and methyl cellulose according to a weight ratio of 55:9:100:24, kneading and refining at 100 ℃ to obtain a plasticizing material, then extruding and forming in a honeycomb die, drying to obtain a honeycomb blank, carbonizing the honeycomb blank at 550 ℃, cooling, and then placing the honeycomb blank in a cremator at 850 ℃ for activating for 0.8h to obtain the high-adsorption honeycomb activated carbon;
the specific surface area of the high-adsorption honeycomb activated carbon reaches 820m 2 Per gram, the pore volume reaches 0.38ml/g, and the static benzene adsorption rate reaches 49%;
(5) To be treatedStopping sucking the waste gas of the asphalt station when the organic matters in the adsorption box reach a saturated state, desorbing the organic matters in the adsorption box, entering a catalytic combustion device, thoroughly purifying and then discharging, wherein the catalyst adopted by the catalytic combustion device is a TFJF catalyst, namely cordierite honeycomb ceramic is adopted as a first carrier, and gamma-Al is adopted as a catalyst 2 O 3 The catalytic combustion device is a second carrier, noble metals Pd and Pt are used as active components, the temperature of the catalytic combustion device is 250-300 ℃, heat generated by catalytic combustion is used for desorbing organic matters in an adsorption box, energy is recycled, and energy sources are saved; through the purification treatment process of the embodiment, the removal rate of VOCs in waste gas and waste smoke of the asphalt station is 94.1%.
Comparative example 2
A method for treating waste gas and smoke from an asphalt station, the method comprising the steps of:
(1) Enabling waste gas and waste smoke of the asphalt station to enter a spray tower through a draught fan, spraying and eluting fine particles through the spray tower, spraying an absorption liquid by a spray head at the upper end of the spray tower, uniformly distributing the absorption liquid on a filler, and enabling the waste gas and waste smoke of the asphalt station to contact with the absorption liquid on the surface of the filler, wherein the characteristics of high mechanical strength, corrosion resistance, high void ratio and large surface of the filler are utilized, and the waste gas and waste smoke of the asphalt station and the absorption liquid have more contact area and reaction time on the surface of the filler so as to achieve the aim of eluting the fine particles in the waste gas and waste smoke of the asphalt station;
(2) The waste gas and waste smoke from which fine particles are eluted enter a deoiling and defogging device, oil and water in the waste gas and waste smoke are removed through a plasma technology of the deoiling and defogging device, the deoiling and defogging device adopts 220V or 380V alternating current, a high-frequency pulse electric field is obtained through an oscillation boosting device, when the voltage reaches the discharge voltage of the waste gas and waste smoke, gas is broken down, active particles comprising high-energy electrons, ions, atoms and free radicals are generated, and the active particles are utilized to further act with pollutants in the waste gas and waste smoke, so that pollutant molecules are decomposed, and the purpose of deoiling and defogging is achieved;
(3) The waste gas and the waste smoke after removing the oil and the water enter a silk screen filter to further filter the smoke and the dust to obtain the waste gas of the asphalt station containing organic matters; the silk screen filter consists of primary filter cotton and middle-effect filter cotton, wherein the primary filter cotton and the middle-effect filter cotton both take carbon nano tube synthetic fiber filter cotton as filter materials;
the preparation method of the carbon nano tube synthetic fiber filter cotton comprises the following steps:
opening the agglomerated polyurethane resin fibers through a strong opening process, carding the fibers into fibers with uniform thickness, implanting carbon nanotube powder in the carding process of the fibers, wherein the addition amount of the carbon nanotubes accounts for 8% of the weight of the polyurethane resin, paving a net layer, heating to 265 ℃, and finally cooling and shaping to obtain carbon nanotube synthetic fiber filter cotton;
the service life of the silk screen filter is 5000h;
(4) The waste gas of the asphalt station enters an activated carbon adsorption box, 3 adsorption beds are set in the activated carbon adsorption box, and the design air quantity of a single bed is 10000m 3 And/h, automatically switching adsorption and desorption when the main fan works, wherein the active carbon adsorption box is formed by rosin and gamma-Al 2 O 3 The high-adsorption honeycomb activated carbon compounded with the honeycomb activated carbon is used as an adsorption material for adsorbing organic substances in the waste gas of the asphalt station, and clean gas is discharged; the preparation method of the high-adsorption honeycomb activated carbon comprises the following steps:
Crushing and grinding rosin resin to above 120 meshes, mixing the ground rosin with gamma-Al 2 O 3 Mixing powder, powdered activated carbon and methyl cellulose according to a weight ratio of 55:9:100:24, kneading and refining at 100 ℃ to obtain a plasticizing material, then extruding and forming in a honeycomb die, drying to obtain a honeycomb blank, carbonizing the honeycomb blank at 550 ℃, cooling, and then placing the honeycomb blank in a cremator at 850 ℃ for activating for 0.8h to obtain the high-adsorption honeycomb activated carbon;
the specific surface area of the high-adsorption honeycomb activated carbon reaches 820m 2 Per gram, the pore volume reaches 0.38ml/g, and the static benzene adsorption rate reaches 49%;
(5) Stopping sucking the waste gas of the asphalt station when the organic matters in the adsorption box reach a saturated state, desorbing the organic matters in the adsorption box, and thoroughly purifying the organic matters in the adsorption box by a catalytic combustion device, and discharging the organic matters, wherein the catalyst adopted by the catalytic combustion device is a TFJF catalyst, namely cordierite is adoptedHoneycomb ceramics as a first support, gamma-Al 2 O 3 The catalytic combustion device is a second carrier, noble metals Pd and Pt are used as active components, the temperature of the catalytic combustion device is 250-300 ℃, heat generated by catalytic combustion is used for desorbing organic matters in an adsorption box, energy is recycled, and energy sources are saved; through the purification treatment process of the embodiment, the removal rate of VOCs in waste gas and waste smoke of the asphalt station is 93.7%.
Comparative example 3
A method for treating waste gas and smoke from an asphalt station, the method comprising the steps of:
(1) Enabling waste gas and waste smoke of the asphalt station to enter a spray tower through a draught fan, spraying and eluting fine particles through the spray tower, spraying an absorption liquid by a spray head at the upper end of the spray tower, uniformly distributing the absorption liquid on a filler, and enabling the waste gas and waste smoke of the asphalt station to contact with the absorption liquid on the surface of the filler, wherein the characteristics of high mechanical strength, corrosion resistance, high void ratio and large surface of the filler are utilized, and the waste gas and waste smoke of the asphalt station and the absorption liquid have more contact area and reaction time on the surface of the filler so as to achieve the aim of eluting the fine particles in the waste gas and waste smoke of the asphalt station;
(2) The waste gas and waste smoke from which fine particles are eluted enter a deoiling and defogging device, oil and water in the waste gas and waste smoke are removed through a plasma technology of the deoiling and defogging device, the deoiling and defogging device adopts 220V or 380V alternating current, a high-frequency pulse electric field is obtained through an oscillation boosting device, when the voltage reaches the discharge voltage of the waste gas and waste smoke, gas is broken down, active particles comprising high-energy electrons, ions, atoms and free radicals are generated, and the active particles are utilized to further act with pollutants in the waste gas and waste smoke, so that pollutant molecules are decomposed, and the purpose of deoiling and defogging is achieved;
(3) The waste gas and the waste smoke after removing the oil and the water enter a silk screen filter to further filter the smoke and the dust to obtain the waste gas of the asphalt station containing organic matters; the silk screen filter consists of primary filter cotton and intermediate filter cotton, wherein the primary filter cotton adopts gamma-Al 2 O 3 The synthetic fiber filter cotton is a filter material, and the medium-efficiency filter cotton takes carbon nano tube synthetic fiber filter cotton as a filter material;
the gamma-Al 2 O 3 The preparation method of the synthetic fiber filter cotton comprises the following steps:
the agglomerated polyester resin fibers are subjected to a powerful opening procedure to be opened, the fibers are carded into fibers with uniform thickness, and gamma-Al is implanted in the carding process of the fibers 2 O 3 Powder, gamma-Al 2 O 3 The powder accounts for 16 percent of the weight of the polyester resin fiber, and is laid into a net layer, then heated to 220 ℃, and finally cooled and shaped to obtain the gamma-Al 2 O 3 Synthetic fiber filter cotton;
the preparation method of the carbon nano tube synthetic fiber filter cotton comprises the following steps:
opening the agglomerated polyurethane resin fibers through a strong opening process, carding the fibers into fibers with uniform thickness, implanting carbon nanotube powder in the carding process of the fibers, wherein the addition amount of the carbon nanotubes accounts for 8% of the weight of the polyurethane resin, paving a net layer, heating to 265 ℃, and finally cooling and shaping to obtain carbon nanotube synthetic fiber filter cotton;
The screen filter has small resistance, large dust holding capacity and service life up to 7500h;
(4) The waste gas of the asphalt station enters an activated carbon adsorption box, 3 adsorption beds are set in the activated carbon adsorption box, and the design air quantity of a single bed is 10000m 3 And (h) automatically switching adsorption and desorption when the main fan works, wherein the high-adsorption honeycomb activated carbon compounded by rosin and honeycomb activated carbon in the activated carbon adsorption box is used as an adsorption material to adsorb organic substances in the waste gas of the asphalt station, and clean gas is discharged; the preparation method of the high-adsorption honeycomb activated carbon comprises the following steps:
crushing and grinding rosin resin to above 120 meshes, mixing the ground rosin, powdered activated carbon and methylcellulose according to a weight ratio of 64:100:24, kneading and refining at 100 ℃ to obtain a plasticizing material, then extruding and molding in a honeycomb die, drying to obtain a honeycomb blank, carbonizing the honeycomb blank at 550 ℃, cooling, and then placing the honeycomb blank in a cremator at 850 ℃ for activating for 0.8h to obtain the high-adsorption honeycomb activated carbon;
the specific surface area of the high-adsorption honeycomb activated carbon is 600m 2 Per g, pore sizeVolume is 0.22ml/g, and static benzene adsorption rate is 31%;
(5) Stopping sucking the waste gas of the asphalt station when the organic matters in the adsorption box reach a saturated state, desorbing the organic matters in the adsorption box, and thoroughly purifying the organic matters in the adsorption box by a catalytic combustion device, and then discharging the organic matters, wherein the catalytic combustion device adopts a catalyst which is a TFJF (reverse flow reaction) catalyst, namely cordierite honeycomb ceramics is adopted as a first carrier, and gamma-Al is adopted as a catalyst 2 O 3 The catalytic combustion device is a second carrier, noble metals Pd and Pt are used as active components, the temperature of the catalytic combustion device is 250-300 ℃, heat generated by catalytic combustion is used for desorbing organic matters in an adsorption box, energy is recycled, and energy sources are saved; through the purification treatment process of the embodiment, the removal rate of VOCs in waste gas and waste smoke of the asphalt station is 92.9%.
Comparative example 4
A method for treating waste gas and smoke from an asphalt station, the method comprising the steps of:
(1) Enabling waste gas and waste smoke of the asphalt station to enter a spray tower through a draught fan, spraying and eluting fine particles through the spray tower, spraying an absorption liquid by a spray head at the upper end of the spray tower, uniformly distributing the absorption liquid on a filler, and enabling the waste gas and waste smoke of the asphalt station to contact with the absorption liquid on the surface of the filler, wherein the characteristics of high mechanical strength, corrosion resistance, high void ratio and large surface of the filler are utilized, and the waste gas and waste smoke of the asphalt station and the absorption liquid have more contact area and reaction time on the surface of the filler so as to achieve the aim of eluting the fine particles in the waste gas and waste smoke of the asphalt station;
(2) The waste gas and waste smoke from which fine particles are eluted enter a deoiling and defogging device, oil and water in the waste gas and waste smoke are removed through a plasma technology of the deoiling and defogging device, the deoiling and defogging device adopts 220V or 380V alternating current, a high-frequency pulse electric field is obtained through an oscillation boosting device, when the voltage reaches the discharge voltage of the waste gas and waste smoke, gas is broken down, active particles comprising high-energy electrons, ions, atoms and free radicals are generated, and the active particles are utilized to further act with pollutants in the waste gas and waste smoke, so that pollutant molecules are decomposed, and the purpose of deoiling and defogging is achieved;
(3) The waste gas and the waste smoke after removing the oil and the water enter a silk screen filter to further filter the smoke and the dust to obtain the oil-containing waste gas and the waste smokeAsphalt plant exhaust gas with organic matter; the silk screen filter consists of primary filter cotton and intermediate filter cotton, wherein the primary filter cotton adopts gamma-Al 2 O 3 The synthetic fiber filter cotton is a filter material, and the medium-efficiency filter cotton takes carbon nano tube synthetic fiber filter cotton as a filter material;
the gamma-Al 2 O 3 The preparation method of the synthetic fiber filter cotton comprises the following steps:
the agglomerated polyester resin fibers are subjected to a powerful opening procedure to be opened, the fibers are carded into fibers with uniform thickness, and gamma-Al is implanted in the carding process of the fibers 2 O 3 Powder, gamma-Al 2 O 3 The powder accounts for 16 percent of the weight of the polyester resin fiber, and is laid into a net layer, then heated to 220 ℃, and finally cooled and shaped to obtain the gamma-Al 2 O 3 Synthetic fiber filter cotton;
the preparation method of the carbon nano tube synthetic fiber filter cotton comprises the following steps:
opening the agglomerated polyurethane resin fibers through a strong opening process, carding the fibers into fibers with uniform thickness, implanting carbon nanotube powder in the carding process of the fibers, wherein the addition amount of the carbon nanotubes accounts for 8% of the weight of the polyurethane resin, paving a net layer, heating to 265 ℃, and finally cooling and shaping to obtain carbon nanotube synthetic fiber filter cotton;
The screen filter has small resistance, large dust holding capacity and service life up to 7500h;
(4) The waste gas of the asphalt station enters an activated carbon adsorption box, 3 adsorption beds are set in the activated carbon adsorption box, and the design air quantity of a single bed is 10000m 3 And (h) automatically switching adsorption and desorption when the main fan works, wherein the high-adsorption honeycomb activated carbon compounded by rosin and honeycomb activated carbon in the activated carbon adsorption box is used as an adsorption material to adsorb organic substances in the waste gas of the asphalt station, and clean gas is discharged; the preparation method of the high-adsorption honeycomb activated carbon comprises the following steps:
gamma-Al 2 O 3 Mixing with powdered activated carbon and methylcellulose according to the weight ratio of 64:100:24, kneading and refining at 100 ℃ to obtain a plasticized material, and thenExtruding and forming in a honeycomb die, drying to obtain a honeycomb blank, carbonizing the honeycomb blank at 550 ℃, cooling, and activating for 0.8h at 850 ℃ in a cremator to obtain high-adsorption honeycomb activated carbon;
the specific surface area of the high-adsorption honeycomb activated carbon is 490m 2 Per gram, pore volume of 0.20ml/g, static benzene adsorption rate of 30%;
(5) Stopping sucking the waste gas of the asphalt station when the organic matters in the adsorption box reach a saturated state, desorbing the organic matters in the adsorption box, and thoroughly purifying the organic matters in the adsorption box by a catalytic combustion device, and then discharging the organic matters, wherein the catalytic combustion device adopts a catalyst which is a TFJF (reverse flow reaction) catalyst, namely cordierite honeycomb ceramics is adopted as a first carrier, and gamma-Al is adopted as a catalyst 2 O 3 The catalytic combustion device is a second carrier, noble metals Pd and Pt are used as active components, the temperature of the catalytic combustion device is 250-300 ℃, heat generated by catalytic combustion is used for desorbing organic matters in an adsorption box, energy is recycled, and energy sources are saved; through the purification treatment process of the embodiment, the removal rate of VOCs in waste gas and waste smoke of the asphalt station is 92.9%.
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (6)
1. A method for treating waste gas and waste smoke of an asphalt station, which is characterized by comprising the following steps:
(1) Waste gas and smoke of the asphalt station enter a spray tower through a draught fan, and fine particles are sprayed and eluted through the spray tower;
(2) The waste gas and waste smoke from which fine particles are eluted enters a deoiling and defogging device, and oil and water in the waste gas and waste smoke are removed through a plasma technology of the deoiling and defogging device;
(3) The waste gas and the waste smoke after removing the oil and the water enter a silk screen filter to further filter the smoke and the dust to obtain the waste gas of the asphalt station containing organic matters;
(4) Waste gas from asphalt station enters an active carbon adsorption box, wherein the active carbon adsorption box is formed by rosin and gamma-Al 2 O 3 The high-adsorption honeycomb activated carbon compounded with the honeycomb activated carbon is used as an adsorption material for adsorbing organic substances in the waste gas of the asphalt station, and clean gas is discharged;
(5) Stopping sucking the waste gas of the asphalt station when the organic matters in the adsorption box reach a saturated state, desorbing the organic matters in the adsorption box, and thoroughly purifying the organic matters in the adsorption box by a catalytic combustion device and then discharging the organic matters;
the silk screen filter in the step (3) consists of primary filter cotton and intermediate filter cotton, wherein the primary filter cotton adopts gamma-Al 2 O 3 The synthetic fiber filter cotton is a filter material, and the medium-efficiency filter cotton takes carbon nano tube synthetic fiber filter cotton as a filter material;
the gamma-Al 2 O 3 The preparation method of the synthetic fiber filter cotton comprises the following steps:
the agglomerated polyester resin fibers are subjected to a powerful opening procedure to be opened, the fibers are carded into fibers with uniform thickness, and gamma-Al is implanted in the carding process of the fibers 2 O 3 Powder, gamma-Al 2 O 3 The addition of the powder accounts for 10 to 20 percent of the weight of the polyester resin fiber, the polyester resin fiber is laid into a net layer, then the net layer is heated to 200 to 220 ℃, and finally the gamma-Al is obtained after cooling and shaping 2 O 3 Synthetic fiber filter cotton;
the preparation method of the carbon nano tube synthetic fiber filter cotton comprises the following steps:
opening the agglomerated polyurethane resin fibers through a strong opening process, carding the fibers into fibers with uniform thickness, implanting carbon nano tube powder in the carding process of the fibers, wherein the addition amount of the carbon nano tube accounts for 5-9% of the weight of the polyurethane resin fibers, paving a net layer, heating to 250-270 ℃, and finally cooling and shaping to obtain the carbon nano tube synthetic fiber filter cotton;
the preparation method of the high-adsorption honeycomb activated carbon in the step (4) comprises the following steps:
crushing and grinding rosin resin to above 120 meshes, mixing the ground rosin with gamma-Al 2 O 3 Mixing powder, powdered activated carbon and methyl cellulose according to the weight ratio of 55-70:8-15:100:20-30, kneading and refining at 90-120 ℃ to obtain a plasticizing material, then extruding and molding in a honeycomb die and drying to obtain a honeycomb blank, carbonizing the honeycomb blank at 500-700 ℃, cooling, and then placing the honeycomb blank in an activation furnace for activating for 0.5-1 h at 750-850 ℃ to obtain the high-adsorption honeycomb activated carbon.
2. The method for treating waste gas and waste smoke of asphalt plant according to claim 1, wherein the absorbing liquid sprayed from the spray head at the upper end of the spray tower in step (1) is uniformly distributed on the filler, and the waste gas and waste smoke of asphalt plant and the absorbing liquid are contacted on the surface of the filler, so as to achieve the purpose of eluting fine particles in the waste gas and waste smoke of asphalt plant.
3. The method for treating waste gas and waste smoke of asphalt station according to claim 1, wherein the oil and mist removing device in step (2) adopts 220V or 380V alternating current, a high-frequency pulse electric field is obtained through an oscillation boosting device, when the voltage reaches the discharge voltage of the waste gas and smoke, the gas is broken down to generate active particles comprising high-energy electrons, ions, atoms and free radicals, and the active particles are utilized to further act with pollutants in the waste gas and smoke to decompose the pollutant molecules so as to achieve the purposes of oil removal and mist removal.
4. The method for treating waste gas and smoke of asphalt plant according to claim 1, wherein 3 adsorption beds are set in the activated carbon adsorption box in the step (4), and the single-bed design air quantity is 10000m 3 And/h, performing automatic switching of adsorption and desorption when the main fan works.
5. The method for treating exhaust gas and fume from asphalt plant according to claim 1, wherein said catalytic combustion device in step (5) is used The catalyst is TFJF catalyst, namely cordierite honeycomb ceramic is adopted as a first carrier, and gamma-Al is adopted as a catalyst 2 O 3 The noble metals Pd and Pt are used as active components.
6. The method for treating waste gas and waste smoke of asphalt plant according to claim 1, wherein the temperature of the catalytic combustion device in the step (5) is 250-300 ℃, and the heat generated by catalytic combustion is used for desorbing organic matters in an adsorption tank, so that energy is recycled.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202211152375.0A CN115671972B (en) | 2022-09-21 | 2022-09-21 | Treatment method for waste gas and waste smoke of asphalt station |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202211152375.0A CN115671972B (en) | 2022-09-21 | 2022-09-21 | Treatment method for waste gas and waste smoke of asphalt station |
Publications (2)
Publication Number | Publication Date |
---|---|
CN115671972A CN115671972A (en) | 2023-02-03 |
CN115671972B true CN115671972B (en) | 2023-06-27 |
Family
ID=85061639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202211152375.0A Active CN115671972B (en) | 2022-09-21 | 2022-09-21 | Treatment method for waste gas and waste smoke of asphalt station |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN115671972B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116803465A (en) * | 2023-06-29 | 2023-09-26 | 广州华科环保工程有限公司 | Method for centralized collection and treatment of organic waste gas in printing industry |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101062458A (en) * | 2006-04-29 | 2007-10-31 | 东北大学设计研究院(有限公司) | Asphalt smoke gas purifying technique |
CN205730749U (en) * | 2016-05-17 | 2016-11-30 | 浙江省环境工程有限公司 | Field, Highway Maintenance station heavy oil, the cleaning system of bitumen flue gas |
CN107029668A (en) * | 2017-06-12 | 2017-08-11 | 芜湖格丰环保科技研究院有限公司 | A kind of honeycomb type molecular sieve active carbon compound adsorbent, preparation method and applications |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5777018A (en) * | 1980-10-27 | 1982-05-14 | Nippon Soken Inc | Manufacture of molded honycomb activated carbon |
JP3125808B2 (en) * | 1991-11-29 | 2001-01-22 | 住友金属鉱山株式会社 | Activated carbon honeycomb structure and manufacturing method thereof |
JP5022337B2 (en) * | 2007-11-02 | 2012-09-12 | 大阪ガスケミカル株式会社 | Honeycomb adsorbent and method for producing the same |
CN101422671B (en) * | 2008-11-12 | 2010-08-25 | 河南省安克林滤业有限公司 | Preparation method of anti-flaming washable filter material |
KR101758951B1 (en) * | 2010-04-22 | 2017-07-17 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | Nonwoven fibrous webs containing chemically active particulates and methods of making and using same |
CN104226098B (en) * | 2014-10-11 | 2016-03-30 | 北京嘉格伟业筑路科技有限公司 | A kind of modified pitch exhaust treatment system and treatment process thereof |
CN105032032A (en) * | 2015-07-22 | 2015-11-11 | 刁广祥 | Diatom synthetic fiber filtering cotton and processing method |
US10960341B2 (en) * | 2016-03-14 | 2021-03-30 | 3M Innovative Properties Company | Air filters comprising polymeric sorbents for aldehydes |
CN107235489A (en) * | 2017-06-27 | 2017-10-10 | 南京林业大学 | A kind of preparation method of high-specific surface area Alveolate activated carbon |
JP7172078B2 (en) * | 2018-03-20 | 2022-11-16 | 住友ゴム工業株式会社 | Method for producing rubber/filler composite |
CN110732227B (en) * | 2018-07-20 | 2023-02-21 | 江南环保集团股份有限公司 | Method and device for treating acid gas |
CN216223635U (en) * | 2021-11-22 | 2022-04-08 | 杨丽 | Waste plastic recycling granulation waste gas purification combined device |
-
2022
- 2022-09-21 CN CN202211152375.0A patent/CN115671972B/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101062458A (en) * | 2006-04-29 | 2007-10-31 | 东北大学设计研究院(有限公司) | Asphalt smoke gas purifying technique |
CN205730749U (en) * | 2016-05-17 | 2016-11-30 | 浙江省环境工程有限公司 | Field, Highway Maintenance station heavy oil, the cleaning system of bitumen flue gas |
CN107029668A (en) * | 2017-06-12 | 2017-08-11 | 芜湖格丰环保科技研究院有限公司 | A kind of honeycomb type molecular sieve active carbon compound adsorbent, preparation method and applications |
Non-Patent Citations (2)
Title |
---|
γ-Al_2O_3/活性炭复合材料的制备及除砷性能研究;王儒堂,许普查;《煤炭加工与综合利用》;第08卷;44-47 * |
γ-Al_2O_3膜改性污泥活性炭的制备及其脱硫性能;张襄楷,范晓丹,徐廷献;《硅酸盐学报》;第11卷;1522-1525 * |
Also Published As
Publication number | Publication date |
---|---|
CN115671972A (en) | 2023-02-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101869800B (en) | Method and system for purifying flue gas generated by incinerating waste materials | |
CN216223635U (en) | Waste plastic recycling granulation waste gas purification combined device | |
CN103900132A (en) | Compound type cooking fume purifier with coupling function | |
CN105032096A (en) | Purifying treatment system for industrial waste gas of heat-setting machine | |
CN115671972B (en) | Treatment method for waste gas and waste smoke of asphalt station | |
CN105289291A (en) | Photoelectric integrated treatment apparatus of VOCs | |
CN205252898U (en) | VOCs's optoelectronic integration processing apparatus | |
CN108786449A (en) | A kind of novel V0Cs adsorption activations desorption low-temperature catalytic treating method and its processing unit | |
CN117160187A (en) | VOCs adsorption concentration catalytic combustion treatment process | |
CN113587117B (en) | System and method for innocent treatment of sludge | |
CN107433104A (en) | A kind of waste gas purification technique based on ROC technologies | |
CN105688523A (en) | Plasma purifier for exhaust gas of automobile 4S shop | |
CN110394042A (en) | Reclaimed rubber waste gas purification apparatus and method | |
CN211635895U (en) | Coating and application organic waste gas treatment system | |
CN106139840A (en) | Purifier and method containing low concentration VOC waste gas | |
CN204619702U (en) | A kind of purifier containing low concentration VOC waste gas | |
CN102895856B (en) | A kind of equipment of garbage-incineration smoke purifying and process for purifying thereof | |
CN208260511U (en) | Reclaimed rubber waste gas purification apparatus | |
CN204637950U (en) | A kind of deodorizing purifier of feed manufacturing waste gas | |
CN104399361B (en) | Waste gas processing method and device of a kind of roller kiln burning into ceramic foam filter | |
KR100947341B1 (en) | Process for operating and removing odor and hydrocarbons in exhaust air stream in tire manufacturing plant | |
CN2333944Y (en) | Ozone photocatalysis air purifier | |
CN106482120A (en) | The method and apparatus for organic solid waste process being carried out using recirculating fluidized bed | |
CN209020111U (en) | A kind of VOCs treatment device using concave convex rod absorption and superparamagnetic field magnetic solution | |
CN216878541U (en) | Organic waste gas treatment system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |