CN115671972A - Method for treating waste gas and waste smoke of asphalt station - Google Patents
Method for treating waste gas and waste smoke of asphalt station Download PDFInfo
- Publication number
- CN115671972A CN115671972A CN202211152375.0A CN202211152375A CN115671972A CN 115671972 A CN115671972 A CN 115671972A CN 202211152375 A CN202211152375 A CN 202211152375A CN 115671972 A CN115671972 A CN 115671972A
- Authority
- CN
- China
- Prior art keywords
- waste gas
- smoke
- waste
- adsorption
- asphalt
- 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.)
- Granted
Links
- 239000002912 waste gas Substances 0.000 title claims abstract description 165
- 239000000779 smoke Substances 0.000 title claims abstract description 139
- 239000010426 asphalt Substances 0.000 title claims abstract description 134
- 239000002699 waste material Substances 0.000 title claims abstract description 105
- 238000000034 method Methods 0.000 title claims abstract description 98
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 212
- 238000001179 sorption measurement Methods 0.000 claims abstract description 145
- 229920000742 Cotton Polymers 0.000 claims abstract description 102
- 239000000126 substance Substances 0.000 claims abstract description 66
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 58
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 58
- 239000012209 synthetic fiber Substances 0.000 claims abstract description 54
- 229920002994 synthetic fiber Polymers 0.000 claims abstract description 54
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims abstract description 53
- 239000000463 material Substances 0.000 claims abstract description 42
- 238000007084 catalytic combustion reaction Methods 0.000 claims abstract description 41
- 239000007921 spray Substances 0.000 claims abstract description 41
- 239000003595 mist Substances 0.000 claims abstract description 39
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 34
- 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
- 239000000428 dust Substances 0.000 claims abstract description 22
- 238000005516 engineering process Methods 0.000 claims abstract description 11
- 239000000835 fiber Substances 0.000 claims description 76
- 230000008569 process Effects 0.000 claims description 43
- 239000000843 powder Substances 0.000 claims description 33
- 238000009960 carding Methods 0.000 claims description 32
- 239000007789 gas Substances 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 30
- 238000010521 absorption reaction Methods 0.000 claims description 27
- 238000002360 preparation method Methods 0.000 claims description 22
- 239000003054 catalyst Substances 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 19
- 239000003344 environmental pollutant Substances 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 19
- 231100000719 pollutant Toxicity 0.000 claims description 19
- 238000002156 mixing Methods 0.000 claims description 17
- 229920005749 polyurethane resin Polymers 0.000 claims description 17
- 229920001225 polyester resin Polymers 0.000 claims description 14
- 239000004645 polyester resin Substances 0.000 claims description 14
- 238000005507 spraying Methods 0.000 claims description 13
- 238000007493 shaping process Methods 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 11
- 238000003795 desorption Methods 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 9
- 229910052878 cordierite Inorganic materials 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
- 238000007599 discharging 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
- 229920000609 methyl cellulose Polymers 0.000 claims description 9
- 239000001923 methylcellulose Substances 0.000 claims description 9
- 229910000510 noble metal Inorganic materials 0.000 claims description 9
- 229910052763 palladium Inorganic materials 0.000 claims description 9
- 229910052697 platinum Inorganic materials 0.000 claims description 9
- 229920006395 saturated elastomer Polymers 0.000 claims description 9
- 238000000227 grinding Methods 0.000 claims description 8
- 239000003517 fume Substances 0.000 claims description 4
- 229920004933 Terylene® Polymers 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims description 2
- 239000003463 adsorbent Substances 0.000 claims 1
- 239000010908 plant waste Substances 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000000945 filler Substances 0.000 description 32
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 24
- 238000000746 purification Methods 0.000 description 21
- 239000011148 porous material Substances 0.000 description 9
- 125000004429 atom Chemical group 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 8
- 235000010981 methylcellulose Nutrition 0.000 description 8
- 230000035484 reaction time Effects 0.000 description 8
- 230000003068 static effect Effects 0.000 description 8
- 239000012855 volatile organic compound Substances 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 7
- 239000011800 void material Substances 0.000 description 7
- 238000010000 carbonizing Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000007670 refining Methods 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000004898 kneading Methods 0.000 description 4
- 239000011269 tar Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 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
- 230000009471 action Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006303 photolysis reaction Methods 0.000 description 2
- 230000015843 photosynthesis, light reaction Effects 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
- 230000003213 activating effect Effects 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000001626 effect on respiratory system Effects 0.000 description 1
- 230000005611 electricity Effects 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
- 239000005416 organic matter Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000003039 volatile agent Substances 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, belonging to the technical field of waste gas treatment of environmental engineering. The method comprises the steps of eluting fine particles from the waste gas and the waste smoke of the asphalt station through a spray tower, removing oil and moisture in an oil and mist removing device through a plasma technology, removing smoke and dust in a silk screen filter, adsorbing organic substances in an activated carbon adsorption box, and thoroughly purifying the desorbed organic substances in a catalytic combustion device. The wire mesh filter is made of gamma-Al 2 O 3 The primary filter cotton with the synthetic fiber filter cotton as the filter material and the intermediate filter cotton with the carbon nano tube synthetic fiber filter cotton as the filter material have high filter efficiency, can reduce the size of equipment, are convenient to replace,the high dust holding capacity prolongs the service life of the filter cotton; the activated carbon adsorption box is made of rosin and gamma-Al 2 O 3 The high-adsorption honeycomb active carbon compounded with the honeycomb active carbon is used as an adsorption material, so that the specific surface area of the adsorption material and the organic substance adsorption rate can be improved.
Description
Technical Field
The invention belongs to the technical field of waste gas treatment in environmental engineering, and relates to a method for treating waste gas and waste smoke of an asphalt station.
Background
The asphalt waste gas mainly comprises asphalt tar, asphalt smoke, liquid tar, gaseous tar, aromatic hydrocarbon, heterocyclic compounds and other unpleasant gases, and dust and small molecular substances generated in the powder adding process. The modified asphalt waste gas has the characteristics of heavy odor and long service life of polycyclic aromatic hydrocarbon. Asphalt fumes are aerosols and vapors produced by the heating of asphalt and the combustion of bituminous materials, and volatiles in the asphalt fumes are released into the atmosphere and become one of the atmospheric pollutants. The asphalt smoke waste gas is generally mixed with smoke dust with a certain concentration, is dark brown or black, and has a strong stimulation effect. The compound containing more than 6 carbon atoms has carcinogenic effect on skin and respiratory system, and researches and animal experiments prove that benzopyrene extracted from coal tar, asphalt and organic solvents is a strong carcinogenic substance. At present, the treatment of asphalt smoke mainly comprises a plasma method, a uv photolysis method, a combustion method and other treatment methods, wherein the plasma method and the uv photolysis method both adopt electricity and light to treat the asphalt smoke, the potential safety hazard of combustion and explosion exists, and the combustion method is to contact combustible substances contained in the asphalt smoke with air at a certain temperature and combust the combustible substances.
The patent CN101776273A discloses a method for efficiently treating asphalt smoke, which adopts calcined smoke of a rotary kiln rear combustion chamber, enables asphalt smoke generated by green anode manufacturing to pass through the rotary kiln rear combustion chamber, decomposes and combusts tar and polycyclic aromatic hydrocarbon in the asphalt smoke in the rotary kiln rear combustion chamber, and effectively removes benzopyrene harmful substances.
CN105771582A discloses a method for treating waste gas generated in production of modified asphalt waterproof materials, which comprises the steps of enabling the asphalt waste gas to pass through a high-speed centrifugal gas-liquid separator, retaining liquid Jiao Youlei liquid in the asphalt waste gas by utilizing inertia, treating the treated waste gas by adopting a cross-flow bed adsorption process, and finally further eliminating peculiar smell by adopting ozone deep oxidation. The patent uses a purification method combining centrifugal separation and cross-flow bed adsorption.
Patent publication No. CN109692561A discloses a method for purifying modified asphalt waste gas by a catalytic oxidation method, the modified asphalt waste gas is atomized by an atomizing device, particles are removed by an adsorption device, then the modified asphalt waste gas passes through an oxidant flow mixing device, an oxidant and the waste gas are fully mixed, an oxidation reaction is carried out in an oxidation device, and finally the modified asphalt waste gas 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 technical scheme that the particulate matters in the atomized modified asphalt waste gas are easy to trap, then adsorb, and finally catalyze and oxidize, and does not disclose the technical scheme of the adsorption of the filter cotton and the high-adsorption honeycomb active 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 performing secondary spraying absorption and activated carbon adsorption purification. The invention combines the technical scheme of spraying and activated carbon adsorption to purify organic waste gas, and does not disclose the technical scheme of filter cotton and high adsorption honeycomb activated carbon adsorption in the invention.
Patent publication No. CN109985503A discloses an asphalt smoke waste gas purification treatment process, which comprises the following specific steps: under the action of a draught fan, asphalt smoke waste gas is conveyed into a counter-flow type atomized alkali spray tower at a low gas speed, alkaline water is used for carrying out first-step treatment on the asphalt smoke waste gas, then the asphalt smoke waste gas is conveyed into a counter-flow type purification washing tower for water washing purification, finally the asphalt smoke waste gas is conveyed into a three-phase multi-medium catalytic oxidation tower and passes through a packing layer in the tower from bottom to top, a medicine adding tank outside the tower sprays hydrogen peroxide and ferrous sulfate to liquid phase in the tower, and the pH value is adjusted, so that final gas is purified and discharged at high altitude. The invention discloses a waste gas purification process combining alkali spraying, water washing purification and catalytic oxidation, and does not disclose the technical scheme of middle filter cotton and high adsorption honeycomb active carbon adsorption.
Disclosure of Invention
The invention aims to provide a method for treating waste gas and waste smoke of an asphalt stationThe method comprises the steps of eluting fine particles from the waste gas of the asphalt station through a spray tower, then removing oil and moisture in an oil and mist removal device through a plasma technology, then removing smoke and dust in a silk screen filter, then adsorbing organic substances in an activated carbon adsorption box, and enabling the desorbed organic substances to enter a catalytic combustion device to be thoroughly purified. The wire mesh filter is made of gamma-Al 2 O 3 The filter cotton consists of primary filter cotton taking the synthetic fiber filter cotton as a filter material and intermediate filter cotton taking the carbon nanotube synthetic fiber filter cotton as a filter material, has high filter efficiency, can reduce the size of equipment, is convenient to replace, has high dust holding capacity, prolongs the service life of the filter cotton, and is energy-saving and environment-friendly; the activated carbon adsorption box is made of rosin and gamma-Al 2 O 3 The high-adsorption honeycomb active carbon compounded with the honeycomb active 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 asphalt station waste gas and waste smoke treatment process can reach more than 99%.
The purpose of the invention can be realized by the following technical scheme:
a method for treating waste gas and waste smoke of an asphalt station comprises the following steps:
(1) Leading waste gas and waste smoke of the asphalt station to enter a spray tower through a draught fan, and spraying and eluting fine particles through the spray tower;
(2) The waste gas and the waste smoke which are eluted to remove the fine particles enter an oil and mist removing device, and oil and moisture in the waste gas and the waste smoke are removed by a plasma technology of the oil and mist removing device;
(3) The waste gas and the waste smoke after removing oil and moisture enter a silk screen filter to further filter smoke and dust to obtain the waste gas of the asphalt station containing organic substances;
(4) The waste gas from asphalt station is introduced into active carbon adsorption box containing rosin and gamma-Al 2 O 3 The high-adsorption honeycomb active carbon compounded with the honeycomb active carbon is used as an adsorption material to adsorb organic substances in the waste gas of the asphalt plant, and clean gas is discharged;
(5) And stopping sucking the waste gas of the asphalt station when the organic substances in the adsorption tank reach a saturated state, and desorbing the organic substances in the adsorption tank, introducing the organic substances into the catalytic combustion device, and completely purifying and then discharging the organic substances.
As a preferable technical scheme of the invention, absorption liquid sprayed by a spray head at the upper end of the spray tower in the step (1) is uniformly distributed on the filler, the waste gas and smoke of the asphalt station and the absorption liquid are in contact on the surface of the filler, and the characteristics of large mechanical strength, corrosion resistance, high porosity and large surface of the filler are utilized, so that the waste gas and smoke of the asphalt station and the absorption liquid have more contact area and reaction time on the surface of the filler, and the purpose of eluting fine particles in the waste gas and smoke of the asphalt station is achieved.
As a preferred 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 the oscillation boosting device, when the voltage reaches the discharge voltage of the waste gas and the waste smoke, the gas is broken down to generate active particles including high-energy electrons, ions, atoms and free radicals, and the active particles are further utilized to react with pollutants in the waste gas and the waste smoke to decompose pollutant molecules so as to achieve the purposes of oil and mist removal.
As a preferable technical scheme of the invention, the silk screen filter in the step (3) is composed of primary filter cotton and intermediate filter cotton, wherein the primary filter cotton is made of gamma-Al 2 O 3 The synthetic fiber filter cotton is a filter material, and the middle-effect filter cotton uses carbon nanotube 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:
opening the polyester resin fiber after strong opening process, carding the fiber into uniform fiber, and implanting gamma-Al in the fiber carding process 2 O 3 Powder, gamma-Al 2 O 3 The powder accounts for 10-20% of the weight of the terylene resin fiber, and is laid into a net layer, then heated to 200-220 ℃, and finally cooled and shaped to obtain the Gamma-Al 2 O 3 Synthetic fiber filter cotton.
As a preferred technical solution of the present invention, the method for preparing the carbon nanotube synthetic fiber filter cotton comprises:
opening the clustered polyurethane resin fibers through a powerful opening process, carding the fibers into fibers with uniform thickness, implanting carbon nanotube powder in the fibers in the carding process, wherein the addition amount of the carbon nanotubes accounts for 5-9% of the weight of the polyurethane resin fibers, paving the carbon nanotubes into a net layer, heating the carbon nanotubes to 250-270 ℃, and finally cooling and shaping the carbon nanotube synthetic fiber filter cotton.
As a preferred technical scheme of the invention, 3 adsorption beds are set in the activated carbon adsorption box in the step (4), and the designed air volume of a single bed is 10000m 3 And h, automatically switching 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 be more than 120 meshes, and mixing the ground rosin with gamma-Al 2 O 3 Mixing the powder, the powdered activated carbon and the methylcellulose according to a weight ratio of 55-70 to 8-15 of 20-30.
As a preferable technical scheme of the invention, the catalyst adopted by the catalytic combustion device in the step (5) is a TFJF type catalyst, namely, cordierite honeycomb ceramic is adopted as a first carrier, and gamma-Al 2 O 3 As a second carrier, and 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 heat generated by catalytic combustion is used for desorbing organic matters in the adsorption box, so that the energy can be recycled.
The invention has the beneficial effects that:
(1) The waste gas and smoke from the spray tower and the oil and mist removing device are filtered by a wire mesh filter, and the wire mesh filter is made of gamma-Al 2 O 3 The synthetic fiber filter cotton is used for filteringThe material consists of primary filter cotton and intermediate filter cotton which take carbon nano tube synthetic fiber filter cotton as filter material and are respectively filtered by gamma-Al 2 O 3 The filter cotton has stronger adsorption capacity and larger porosity due to the compounding with the polyester resin fibers and the compounding of the carbon nano tubes and the polyurethane resin fibers, so that the resistance is small, the dust holding capacity is large, and the service life of the screen filter can be finally prolonged;
(2) The high-adsorption honeycomb active carbon in the active carbon adsorption box passes through rosin and gamma-Al 2 O 3 The composite material is compounded with the honeycomb activated carbon, so that the high-adsorption honeycomb activated carbon has large specific surface area, large pore volume and strong adsorption capacity; the specific surface area of the high-adsorption honeycomb active carbon is more than 800m 2 (ii)/g, pore volume is more than 0.3ml/g, and static benzene adsorption rate is more than 40%;
(3) The heat generated by catalytic combustion in the catalytic combustion device is used for organic matter desorption in the adsorption box, and the energy is recycled;
(4) The invention adopts the gamma-Al 2 O 3 Filtering to remove residual smoke and dust after spraying, deoiling and demisting, and filtering with rosin and gamma-Al 2 O 3 The high-adsorption honeycomb active carbon obtained by compounding with the honeycomb active carbon adsorbs organic substances, and finally, the desorbed organic substances are thoroughly purified by catalytic combustion.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a flow chart of a process for treating waste gas and waste smoke of an asphalt plant in example 1 of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, characteristics and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Example 1
Please refer to fig. 1, a method for treating waste gas and waste smoke of an asphalt plant, the method comprising the following steps:
(1) The method comprises the following steps of (1) enabling waste gas and waste smoke of the asphalt station to enter a spray tower through an induced draft fan, spraying and eluting fine particles through the spray tower, enabling absorption liquid sprayed by a spray head at the upper end of the spray tower to be uniformly distributed on a filler, enabling the waste gas and waste smoke of the asphalt station to be in contact with the absorption liquid on the surface of the filler, and enabling the waste gas and waste smoke of the asphalt station and the absorption liquid to have more contact areas and reaction time on the surface of the filler by utilizing the characteristics of large mechanical strength, corrosion resistance, high void ratio and large surface of the filler so as to achieve the purpose of eluting the fine particles in the waste gas and waste smoke of the asphalt station;
(2) The method comprises the following steps that waste gas and waste smoke with fine particles eluted is fed into an oil and mist removing device, oil and moisture in the waste gas and waste smoke are removed through a plasma technology of the oil and mist removing device, 220V or 380V alternating current is adopted by the oil and mist removing device, a high-frequency pulse electric field is obtained through a vibration boosting device, when voltage reaches discharge voltage of the waste gas and waste smoke, gas is punctured, active particles including high-energy electrons, ions, atoms and free radicals are generated, and the active particles are further utilized to act with pollutants in the waste gas and waste smoke to decompose pollutant molecules, so that the purposes of oil and mist removal are achieved;
(3) The waste gas and the waste smoke after removing oil and moisture enter a silk screen filter to further filter smoke and dust to obtain the waste gas of the asphalt station containing organic substances; the silk screen filter is composed of primary filter cotton and intermediate filter cotton, wherein the primary filter cotton is 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;
the gamma-Al 2 O 3 The preparation method of the synthetic fiber filter cotton comprises the following steps:
opening the polyester resin fiber after strong opening process, carding the fiber into thickThin uniform fibers implanted with gamma-Al during carding 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 paved into a net layer, then the net layer is heated 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 clustered polyurethane resin fibers through a powerful opening process, carding the fibers into fibers with uniform thickness, implanting carbon nanotube powder in the fibers in the carding process, wherein the addition amount of the carbon nanotubes accounts for 8% of the weight of the polyurethane resin, paving the carbon nanotubes into a net layer, heating the carbon nanotubes to 265 ℃, and finally cooling and shaping to obtain the carbon nanotube synthetic fiber filter cotton;
the wire mesh filter has small resistance and large dust holding capacity, and the service life can reach 7500h;
(4) The waste gas of the asphalt station enters an activated carbon adsorption tank, 3 adsorption beds are set in the activated carbon adsorption tank, and the designed air volume of a single bed is 10000m 3 The main fan is used for automatic switching of adsorption and desorption during working, and rosin and gamma-Al are filled in the activated carbon adsorption box 2 O 3 The high-adsorption honeycomb active carbon compounded with the honeycomb active carbon is used as an adsorption material to adsorb organic substances in the waste gas of the asphalt plant, 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 be more than 120 meshes, and mixing the ground rosin with gamma-Al 2 O 3 Mixing powder, powdered activated carbon and methylcellulose according to a weight ratio of 55 to 100, kneading and refining at 100 ℃ to obtain a plasticized material, then carrying out extrusion forming in a honeycomb mould and drying to obtain a honeycomb blank, finally carbonizing the honeycomb blank at 550 ℃, cooling and then placing in a cremator for activation for 0.8h at 850 ℃ to obtain the high-adsorption honeycomb activated carbon;
the specific surface area of the high-adsorption honeycomb active carbon reaches 820m 2 The volume of the pore reaches 0.38ml/g, and the static benzene adsorption rate reaches 49 percent;
(5) In the adsorption box isStopping sucking the waste gas of the asphalt station when the organic substances reach a saturated state, desorbing the organic substances in the adsorption tank, introducing the organic substances into a catalytic combustion device for thorough purification, and then discharging the organic substances, wherein the catalytic combustion device adopts a TFJF type catalyst, namely cordierite honeycomb ceramic as a first carrier and gamma-Al 2 O 3 The catalyst is used as 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 the adsorption box, the energy is recycled, and the energy is saved; through the purification treatment process of the embodiment, the removal rate of VOCs in the waste gas and the waste smoke of the asphalt plant can reach 99.7%.
Example 2
A method for treating waste gas and waste smoke of an asphalt station comprises the following steps:
(1) The method comprises the following steps of (1) enabling waste gas and waste smoke of the asphalt station to enter a spray tower through an induced draft fan, spraying and eluting fine particles through the spray tower, enabling absorption liquid sprayed by a spray head at the upper end of the spray tower to be uniformly distributed on a filler, enabling the waste gas and waste smoke of the asphalt station to be in contact with the absorption liquid on the surface of the filler, and enabling the waste gas and waste smoke of the asphalt station and the absorption liquid to have more contact areas and reaction time on the surface of the filler by utilizing the characteristics of large mechanical strength, corrosion resistance, high void ratio and large surface of the filler so as to achieve the purpose of eluting the fine particles in the waste gas and waste smoke of the asphalt station;
(2) The method comprises the following steps that waste gas and waste smoke with fine particles eluted is fed into an oil and mist removing device, oil and moisture in the waste gas and waste smoke are removed through a plasma technology of the oil and mist removing device, 220V or 380V alternating current is adopted by the oil and mist removing device, a high-frequency pulse electric field is obtained through a vibration boosting device, when voltage reaches discharge voltage of the waste gas and waste smoke, gas is punctured, active particles including high-energy electrons, ions, atoms and free radicals are generated, and the active particles are further utilized to act with pollutants in the waste gas and waste smoke to decompose pollutant molecules, so that the purposes of oil and mist removal are achieved;
(3) The waste gas and the waste smoke after removing oil and moisture enter a silk screen filter to further filter smoke and dust to obtain the waste gas of the asphalt station containing organic substances; the silk screen filter is composed of primary filter cotton and intermediate filter cottonThe primary filter cotton is made of gamma-Al 2 O 3 The synthetic fiber filter cotton is a filter material, and the middle-effect filter cotton takes the carbon nano tube synthetic fiber filter cotton as the filter material;
the gamma-Al 2 O 3 The preparation method of the synthetic fiber filter cotton comprises the following steps:
opening the polyester resin fiber after strong opening process, carding the fiber into uniform fiber, and implanting gamma-Al in the fiber carding process 2 O 3 Powder, gamma-Al 2 O 3 The powder accounts for 11% 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 clustered polyurethane resin fibers through a strong opening process, carding the fibers into fibers with uniform thickness, implanting carbon nanotube powder in the fibers in the carding process, wherein the addition amount of the carbon nanotubes accounts for 6 percent of the weight of the polyurethane resin, paving the carbon nanotubes into a net layer, heating the net layer to 270 ℃, and finally cooling and sizing the net layer to obtain the carbon nanotube synthetic fiber filter cotton;
the wire mesh filter has small resistance and large dust holding capacity, and the service life can reach 6800h;
(4) The waste gas of the asphalt station enters an activated carbon adsorption tank, 3 adsorption beds are set in the activated carbon adsorption tank, and the designed air volume of a single bed is 10000m 3 The main fan is used for automatic switching of adsorption and desorption during working, and rosin and gamma-Al are filled in the activated carbon adsorption box 2 O 3 The high-adsorption honeycomb active carbon compounded with the honeycomb active carbon is used as an adsorption material to adsorb organic substances in the waste gas of the asphalt plant, 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 be more than 120 meshes, and mixing the ground rosin with gamma-Al 2 O 3 Mixing the powder, the powdered activated carbon and the methylcellulose according to a weight ratio of 61Then, carrying out extrusion forming in a honeycomb mould and drying to obtain a honeycomb blank, finally carbonizing the honeycomb blank at 650 ℃, cooling and then putting the honeycomb blank in a cremator to activate for 0.6h at 800 ℃ to obtain high-adsorption honeycomb activated carbon;
the specific surface area of the high-adsorption honeycomb active carbon reaches 809m 2 (iv)/g, pore volume of 0.32ml/g, and static benzene adsorption rate of 46%;
(5) Stopping sucking the waste gas of the asphalt station when organic substances in the adsorption tank reach a saturated state, desorbing the organic substances in the adsorption tank, introducing the organic substances into a catalytic combustion device for thorough purification, and discharging the organic substances, wherein the catalytic combustion device adopts a TFJF type catalyst, namely cordierite honeycomb ceramic as a first carrier and gamma-Al 2 O 3 The catalyst is used as 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 the adsorption box, the energy is recycled, and the energy is saved; by the purification treatment process, the removal rate of VOCs in the waste gas and the waste smoke of the asphalt plant can reach 99.3%.
Example 3
A method for treating waste gas and waste smoke of an asphalt station comprises the following steps:
(1) The method comprises the following steps of (1) enabling waste gas and waste smoke of the asphalt station to enter a spray tower through an induced draft fan, spraying and eluting fine particles through the spray tower, enabling absorption liquid sprayed by a spray head at the upper end of the spray tower to be uniformly distributed on a filler, enabling the waste gas and waste smoke of the asphalt station to be in contact with the absorption liquid on the surface of the filler, and enabling the waste gas and waste smoke of the asphalt station and the absorption liquid to have more contact areas and reaction time on the surface of the filler by utilizing the characteristics of large mechanical strength, corrosion resistance, high void ratio and large surface of the filler so as to achieve the purpose of eluting the fine particles in the waste gas and waste smoke of the asphalt station;
(2) The method comprises the following steps that waste gas and waste smoke with fine particles eluted is fed into an oil and mist removing device, oil and moisture in the waste gas and waste smoke are removed through a plasma technology of the oil and mist removing device, 220V or 380V alternating current is adopted by the oil and mist removing device, a high-frequency pulse electric field is obtained through a vibration boosting device, when voltage reaches discharge voltage of the waste gas and waste smoke, gas is punctured, active particles including high-energy electrons, ions, atoms and free radicals are generated, and the active particles are further utilized to act with pollutants in the waste gas and waste smoke to decompose pollutant molecules, so that the purposes of oil and mist removal are achieved;
(3) The waste gas and the waste smoke after removing oil and moisture enter a silk screen filter to further filter smoke and dust to obtain the waste gas of the asphalt station containing organic substances; the silk screen filter is composed of primary filter cotton and intermediate filter cotton, wherein the primary filter cotton is gamma-Al 2 O 3 The synthetic fiber filter cotton is a filter material, and the middle-effect filter cotton takes the carbon nano tube synthetic fiber filter cotton as the filter material;
the gamma-Al 2 O 3 The preparation method of the synthetic fiber filter cotton comprises the following steps:
opening the polyester resin fiber after strong opening process, carding the fiber into uniform fiber, and implanting gamma-Al in the fiber carding process 2 O 3 Powder, gamma-Al 2 O 3 The powder accounts for 12% of the weight of the terylene 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 clustered polyurethane resin fibers through a powerful opening process, carding the fibers into fibers with uniform thickness, implanting carbon nanotube powder in the fibers in the carding process, wherein the addition amount of the carbon nanotubes accounts for 5% of the weight of the polyurethane resin, paving the carbon nanotubes into a net layer, heating the carbon nanotubes to 255 ℃, and finally cooling and shaping the carbon nanotube synthetic fiber filter cotton;
the wire mesh filter has small resistance and large dust holding capacity, and the service life can reach 6900h;
(4) The waste gas of the asphalt station enters an activated carbon adsorption tank, 3 adsorption beds are set in the activated carbon adsorption tank, and the designed air volume of a single bed is 10000m 3 The main fan is used for automatic switching of adsorption and desorption during working, and rosin and gamma-Al are filled in the activated carbon adsorption box 2 O 3 High adsorption honeycomb-shaped active carbon compounded with honeycomb-shaped active carbonThe charcoal is an adsorbing material for adsorbing organic substances in the waste gas of the asphalt plant, 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 be more than 120 meshes, and mixing the ground rosin with gamma-Al 2 O 3 Mixing powder, powdered activated carbon and methylcellulose according to a weight ratio of 70;
the specific surface area of the high-adsorption honeycomb active carbon reaches 831m 2 The volume of the pore reaches 0.37ml/g, and the static benzene adsorption rate reaches 45 percent;
(5) Stopping sucking the waste gas of the asphalt station when organic substances in the adsorption tank reach a saturated state, desorbing the organic substances in the adsorption tank, introducing the organic substances into a catalytic combustion device for thorough purification, and then discharging the organic substances, wherein the catalytic combustion device adopts a TFJF type catalyst, namely cordierite honeycomb ceramic as a first carrier and gamma-Al 2 O 3 The catalyst is used as 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 the adsorption box, the energy is recycled, and the energy is saved; through the purification treatment process of the embodiment, the removal rate of VOCs in the waste gas and the waste smoke of the asphalt plant can reach 99.5%.
Comparative example 1
A method for treating waste gas and waste smoke of an asphalt station comprises the following steps:
(1) The method comprises the following steps of (1) enabling waste gas and waste smoke of the asphalt station to enter a spray tower through an induced draft fan, spraying and eluting fine particles through the spray tower, enabling absorption liquid sprayed by a spray head at the upper end of the spray tower to be uniformly distributed on a filler, enabling the waste gas and waste smoke of the asphalt station to be in contact with the absorption liquid on the surface of the filler, and enabling the waste gas and waste smoke of the asphalt station and the absorption liquid to have more contact areas and reaction time on the surface of the filler by utilizing the characteristics of large mechanical strength, corrosion resistance, high void ratio and large surface of the filler so as to achieve the purpose of eluting the fine particles in the waste gas and waste smoke of the asphalt station;
(2) The method comprises the following steps that waste gas and waste smoke with fine particles eluted is fed into an oil and mist removing device, oil and moisture in the waste gas and waste smoke are removed through a plasma technology of the oil and mist removing device, 220V or 380V alternating current is adopted by the oil and mist removing device, a high-frequency pulse electric field is obtained through a vibration boosting device, when voltage reaches discharge voltage of the waste gas and waste smoke, gas is punctured, active particles including high-energy electrons, ions, atoms and free radicals are generated, and the active particles are further utilized to act with pollutants in the waste gas and waste smoke to decompose pollutant molecules, so that the purposes of oil and mist removal are achieved;
(3) The waste gas and the waste smoke after removing oil and moisture enter a silk screen filter to further filter smoke and dust to obtain the waste gas of the asphalt station containing organic substances; the screen filter is composed of primary filter cotton and intermediate filter cotton, wherein the primary filter cotton and the intermediate 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:
opening the polyester resin fiber after strong opening process, carding the fiber into uniform fiber, and implanting gamma-Al in the fiber carding process 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 paved into a net layer, then the net layer is heated to 220 ℃, and finally the gamma-Al is obtained after cooling and shaping 2 O 3 Synthetic fiber filter cotton;
the service life of the wire mesh filter is 5200h;
(4) The waste gas of the asphalt plant enters an activated carbon adsorption box, 3 adsorption beds are set in the activated carbon adsorption box, and the designed air volume of a single bed is 10000m 3 The main fan is used for automatic switching of adsorption and desorption during working, and rosin and gamma-Al are filled in the activated carbon adsorption box 2 O 3 The high-adsorption honeycomb active carbon compounded with the honeycomb active carbon is used as an adsorption material to adsorb organic substances in the waste gas of the asphalt plant, and clean gas is discharged; the preparation method of the high-adsorption honeycomb activated carbon comprises the following stepsThe method comprises the following steps:
crushing and grinding rosin resin to be more than 120 meshes, and mixing the ground rosin with gamma-Al 2 O 3 Mixing powder, powdered activated carbon and methylcellulose according to a weight ratio of 55 to 100, kneading and refining at 100 ℃ to obtain a plasticized material, then carrying out extrusion forming in a honeycomb mould and drying to obtain a honeycomb blank, finally carbonizing the honeycomb blank at 550 ℃, cooling and then placing in a cremator for activation for 0.8h at 850 ℃ to obtain the high-adsorption honeycomb activated carbon;
the specific surface area of the high-adsorption honeycomb active carbon reaches 820m 2 The volume of the pore reaches 0.38ml/g, and the static benzene adsorption rate reaches 49 percent;
(5) Stopping sucking the waste gas of the asphalt station when organic substances in the adsorption tank reach a saturated state, desorbing the organic substances in the adsorption tank, introducing the organic substances into a catalytic combustion device for thorough purification, and discharging the organic substances, wherein the catalytic combustion device adopts a TFJF type catalyst, namely cordierite honeycomb ceramic as a first carrier and gamma-Al 2 O 3 The catalyst is used as 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 the adsorption box, the energy is recycled, and the energy is saved; through the purification treatment process of the embodiment, the removal rate of VOCs in the waste gas and the waste smoke of the asphalt plant is 94.1%.
Comparative example 2
A method for treating waste gas and waste smoke of an asphalt station comprises the following steps:
(1) The method comprises the following steps of (1) enabling waste gas and waste smoke of the asphalt station to enter a spray tower through an induced draft fan, spraying and eluting fine particles through the spray tower, enabling absorption liquid sprayed by a spray head at the upper end of the spray tower to be uniformly distributed on a filler, enabling the waste gas and waste smoke of the asphalt station to be in contact with the absorption liquid on the surface of the filler, and enabling the waste gas and waste smoke of the asphalt station and the absorption liquid to have more contact areas and reaction time on the surface of the filler by utilizing the characteristics of large mechanical strength, corrosion resistance, high void ratio and large surface of the filler so as to achieve the purpose of eluting the fine particles in the waste gas and waste smoke of the asphalt station;
(2) The method comprises the following steps that waste gas and waste smoke with fine particles eluted is fed into an oil and mist removing device, oil and moisture in the waste gas and waste smoke are removed through a plasma technology of the oil and mist removing device, 220V or 380V alternating current is adopted by the oil and mist removing device, a high-frequency pulse electric field is obtained through a vibration boosting device, when voltage reaches discharge voltage of the waste gas and waste smoke, gas is punctured, active particles including high-energy electrons, ions, atoms and free radicals are generated, and the active particles are further utilized to act with pollutants in the waste gas and waste smoke to decompose pollutant molecules, so that the purposes of oil and mist removal are achieved;
(3) The waste gas and the waste smoke after removing oil and moisture enter a silk screen filter to further filter smoke and dust to obtain the waste gas of the asphalt station containing organic substances; the screen filter is composed of primary filter cotton and intermediate filter cotton, and the primary filter cotton and the intermediate filter cotton both use carbon nanotube 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 clustered polyurethane resin fibers through a powerful opening process, carding the fibers into fibers with uniform thickness, implanting carbon nanotube powder in the fibers in the carding process, wherein the addition amount of the carbon nanotubes accounts for 8% of the weight of the polyurethane resin, paving the carbon nanotubes into a net layer, heating the carbon nanotubes to 265 ℃, and finally cooling and shaping to obtain the carbon nanotube synthetic fiber filter cotton;
the service life of the wire mesh filter is 5000h;
(4) The waste gas of the asphalt station enters an activated carbon adsorption tank, 3 adsorption beds are set in the activated carbon adsorption tank, and the designed air volume of a single bed is 10000m 3 The main fan is used for automatic switching of adsorption and desorption during working, and rosin and gamma-Al are filled in the activated carbon adsorption box 2 O 3 The high-adsorption honeycomb active carbon compounded with the honeycomb active carbon is used as an adsorption material to adsorb organic substances in the waste gas of the asphalt plant, 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 be more than 120 meshes, and mixing the ground rosin with gamma-Al 2 O 3 Powder, powdered activated carbon and methylcellulose were mixed at a weight ratio of 55Kneading and refining under the components to obtain a plasticized material, then carrying out extrusion forming in a honeycomb mould and drying to obtain a honeycomb blank, finally carbonizing the honeycomb blank at 550 ℃, cooling and then putting in a cremator to activate for 0.8h at 850 ℃ to obtain high-adsorption honeycomb activated carbon;
the specific surface area of the high-adsorption honeycomb active carbon reaches 820m 2 The volume of the pore reaches 0.38ml/g, and the static benzene adsorption rate reaches 49 percent;
(5) Stopping sucking the waste gas of the asphalt station when organic substances in the adsorption tank reach a saturated state, desorbing the organic substances in the adsorption tank, introducing the organic substances into a catalytic combustion device for thorough purification, and discharging the organic substances, wherein the catalytic combustion device adopts a TFJF type catalyst, namely cordierite honeycomb ceramic as a first carrier and gamma-Al 2 O 3 The catalyst is used as 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 the adsorption box, the energy is recycled, and the energy is saved; through the purification treatment process of the embodiment, the removal rate of VOCs in the waste gas and the waste smoke of the asphalt plant is 93.7%.
Comparative example 3
A method for treating waste gas and waste smoke of an asphalt station comprises the following steps:
(1) The method comprises the following steps of (1) enabling waste gas and waste smoke of the asphalt station to enter a spray tower through an induced draft fan, spraying and eluting fine particles through the spray tower, enabling absorption liquid sprayed by a spray head at the upper end of the spray tower to be uniformly distributed on a filler, enabling the waste gas and waste smoke of the asphalt station to be in contact with the absorption liquid on the surface of the filler, and enabling the waste gas and waste smoke of the asphalt station and the absorption liquid to have more contact areas and reaction time on the surface of the filler by utilizing the characteristics of large mechanical strength, corrosion resistance, high void ratio and large surface of the filler so as to achieve the purpose of eluting the fine particles in the waste gas and waste smoke of the asphalt station;
(2) The method comprises the following steps that waste gas and waste smoke with fine particles eluted is fed into an oil and mist removing device, oil and moisture in the waste gas and waste smoke are removed through a plasma technology of the oil and mist removing device, 220V or 380V alternating current is adopted by the oil and mist removing device, a high-frequency pulse electric field is obtained through a vibration boosting device, when voltage reaches discharge voltage of the waste gas and waste smoke, gas is punctured, active particles including high-energy electrons, ions, atoms and free radicals are generated, and the active particles are further utilized to act with pollutants in the waste gas and waste smoke to decompose pollutant molecules, so that the purposes of oil and mist removal are achieved;
(3) The waste gas and the waste smoke after the oil and the moisture are removed enter a silk screen filter to further filter smoke and dust to obtain the asphalt station waste gas containing organic substances; the silk screen filter is composed of primary filter cotton and intermediate filter cotton, wherein the primary filter cotton is gamma-Al 2 O 3 The synthetic fiber filter cotton is a filter material, and the middle-effect filter cotton takes the carbon nano tube synthetic fiber filter cotton as the filter material;
the gamma-Al 2 O 3 The preparation method of the synthetic fiber filter cotton comprises the following steps:
opening the polyester resin fiber after strong opening process, carding the fiber into uniform fiber, and implanting gamma-Al in the fiber carding process 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 paved into a net layer, then the net layer is heated 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 clustered polyurethane resin fibers through a powerful opening process, carding the fibers into fibers with uniform thickness, implanting carbon nanotube powder in the fibers in the carding process, wherein the addition amount of the carbon nanotubes accounts for 8% of the weight of the polyurethane resin, paving the carbon nanotubes into a net layer, heating the carbon nanotubes to 265 ℃, and finally cooling and shaping to obtain the carbon nanotube synthetic fiber filter cotton;
the wire mesh filter has small resistance and large dust holding capacity, and the service life can reach 7500h;
(4) The waste gas of the asphalt plant enters an activated carbon adsorption box, 3 adsorption beds are set in the activated carbon adsorption box, and the designed air volume of a single bed is 10000m 3 H, the main fan is automatically switched between adsorption and desorption when in work, and the activated carbon adsorption box is compounded by rosin and honeycomb activated carbon to form a high adsorption honeycombThe active carbon is an adsorbing material to adsorb organic substances in the waste gas of the asphalt plant, 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 be more than 120 meshes, mixing the ground rosin with powdered activated carbon and methyl cellulose according to a weight ratio of 64 to 100, kneading and refining at 100 ℃ to obtain a plasticized material, then carrying out extrusion forming and drying in a honeycomb mould to obtain a honeycomb blank, finally carbonizing the honeycomb blank at 550 ℃, cooling, and then placing in a cremator for activating for 0.8h at 850 ℃ to obtain the high-adsorption honeycomb activated carbon;
the specific surface area of the highly-adsorbed honeycomb activated carbon is 600m 2 (ii)/g, pore volume of 0.22ml/g, and static benzene adsorption rate of 31%;
(5) Stopping sucking the waste gas of the asphalt station when organic substances in the adsorption tank reach a saturated state, desorbing the organic substances in the adsorption tank, introducing the organic substances into a catalytic combustion device for thorough purification, and then discharging the organic substances, wherein the catalytic combustion device adopts a TFJF type catalyst, namely cordierite honeycomb ceramic as a first carrier and gamma-Al 2 O 3 The catalyst is used as 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 the adsorption box, the energy is recycled, and the energy is saved; through the purification treatment process of the embodiment, the removal rate of VOCs in the waste gas and the waste smoke of the asphalt plant is 92.9%.
Comparative example 4
A method for treating waste gas and waste smoke of an asphalt station comprises the following steps:
(1) The method comprises the following steps of (1) enabling waste gas and waste smoke of the asphalt station to enter a spray tower through an induced draft fan, spraying and eluting fine particles through the spray tower, enabling absorption liquid sprayed by a spray head at the upper end of the spray tower to be uniformly distributed on a filler, enabling the waste gas and waste smoke of the asphalt station to be in contact with the absorption liquid on the surface of the filler, and enabling the waste gas and waste smoke of the asphalt station and the absorption liquid to have more contact areas and reaction time on the surface of the filler by utilizing the characteristics of large mechanical strength, corrosion resistance, high void ratio and large surface of the filler so as to achieve the purpose of eluting the fine particles in the waste gas and waste smoke of the asphalt station;
(2) The method comprises the following steps that waste gas and waste smoke with fine particles eluted is fed into an oil and mist removing device, oil and moisture in the waste gas and waste smoke are removed through a plasma technology of the oil and mist removing device, 220V or 380V alternating current is adopted by the oil and mist removing device, a high-frequency pulse electric field is obtained through a vibration boosting device, when voltage reaches discharge voltage of the waste gas and waste smoke, gas is punctured, active particles including high-energy electrons, ions, atoms and free radicals are generated, and the active particles are further utilized to act with pollutants in the waste gas and waste smoke to decompose pollutant molecules, so that the purposes of oil and mist removal are achieved;
(3) The waste gas and the waste smoke after removing oil and moisture enter a silk screen filter to further filter smoke and dust to obtain the waste gas of the asphalt station containing organic substances; the silk screen filter is composed of primary filter cotton and intermediate filter cotton, wherein the primary filter cotton is gamma-Al 2 O 3 The synthetic fiber filter cotton is a filter material, and the middle-effect filter cotton takes the carbon nano tube synthetic fiber filter cotton as the filter material;
the gamma-Al 2 O 3 The preparation method of the synthetic fiber filter cotton comprises the following steps:
opening the polyester resin fiber after strong opening process, carding the fiber into uniform fiber, and implanting gamma-Al in the fiber carding process 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 paved into a net layer, then the net layer is heated 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 clustered polyurethane resin fibers through a powerful opening process, carding the fibers into fibers with uniform thickness, implanting carbon nanotube powder in the fibers in the carding process, wherein the addition amount of the carbon nanotubes accounts for 8% of the weight of the polyurethane resin, paving the carbon nanotubes into a net layer, heating the carbon nanotubes to 265 ℃, and finally cooling and shaping to obtain the carbon nanotube synthetic fiber filter cotton;
the wire mesh filter has small resistance and large dust holding capacity, and the service life can reach 7500h;
(4) The waste gas of the asphalt station enters an activated carbon adsorption tank, 3 adsorption beds are set in the activated carbon adsorption tank, and the designed air volume of a single bed is 10000m 3 The main fan is used for automatically switching adsorption and desorption during working, the high-adsorption honeycomb active carbon compounded by rosin and honeycomb active carbon is used as an adsorption material in the active carbon adsorption box 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:
mixing gamma-Al 2 O 3 Mixing the powder activated carbon and methylcellulose according to a weight ratio of 64 to 100, kneading and refining at 100 ℃ to obtain a plasticized material, then carrying out extrusion forming in a honeycomb mould and drying to obtain a honeycomb blank, finally carbonizing the honeycomb blank at 550 ℃, cooling and then putting in a cremator for activation for 0.8h at 850 ℃ to obtain the high-adsorption honeycomb activated carbon;
the specific surface area of the highly-adsorbed honeycomb activated carbon is 490m 2 (ii)/g, pore volume of 0.20ml/g, and static benzene adsorption rate of 30%;
(5) Stopping sucking the waste gas of the asphalt station when organic substances in the adsorption tank reach a saturated state, desorbing the organic substances in the adsorption tank, introducing the organic substances into a catalytic combustion device for thorough purification, and discharging the organic substances, wherein the catalytic combustion device adopts a TFJF type catalyst, namely cordierite honeycomb ceramic as a first carrier and gamma-Al 2 O 3 The catalyst is used as 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 the adsorption box, the energy is recycled, and the energy is saved; through the purification treatment process of the embodiment, the removal rate of VOCs in the waste gas and the waste smoke of the asphalt plant is 92.9%.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The method for treating the waste gas and the waste smoke of the asphalt plant is characterized by comprising the following steps of:
(1) Leading waste gas and waste smoke of the asphalt station to enter a spray tower through a draught fan, and spraying and eluting fine particles through the spray tower;
(2) The waste gas and the waste smoke which are eluted to remove the fine particles enter an oil and mist removing device, and oil and moisture in the waste gas and the waste smoke are removed by a plasma technology of the oil and mist removing device;
(3) The waste gas and the waste smoke after removing oil and moisture enter a silk screen filter to further filter smoke and dust to obtain the waste gas of the asphalt station containing organic substances;
(4) The waste gas of the asphalt station enters an activated carbon adsorption box, wherein the activated carbon adsorption box is filled with rosin and gamma-Al 2 O 3 The high-adsorption honeycomb active carbon compounded with the honeycomb active carbon is used as an adsorption material for adsorbing organic substances in the waste gas of the asphalt plant, and clean gas is discharged;
(5) And stopping sucking the waste gas of the asphalt station when the organic substances in the adsorption tank reach a saturated state, and desorbing the organic substances in the adsorption tank, introducing the organic substances into the catalytic combustion device, and completely purifying and then discharging the organic substances.
2. The method for treating the waste gas and the waste smoke of the asphalt plant according to claim 1, wherein the absorption liquid sprayed from the spray nozzles at the upper end of the spray tower in the step (1) is uniformly distributed on the packing, and the waste gas and the waste smoke of the asphalt plant are contacted with the absorption liquid on the surface of the packing so as to achieve the purpose of eluting fine particles in the waste gas and the waste smoke of the asphalt plant.
3. The method according to claim 1, wherein the oil and mist removing device in step (2) uses 220V or 380V ac power, and a high-frequency pulse electric field is obtained through the oscillation voltage boosting device, when the voltage reaches the discharge voltage of the exhaust gas and the exhaust fume, the gas is broken down to generate active particles including high-energy electrons, ions, atoms and free radicals, and the active particles are further used to react with pollutants in the exhaust gas and the exhaust fume to decompose pollutant molecules, so as to achieve the purpose of oil and mist removal.
4. The method for treating the exhaust gas and the waste smoke of the asphalt plant as claimed in claim 1, wherein the wire mesh filter in step (3) is composed of primary filter cotton and intermediate filter cotton, and the primary filter cotton is made of gamma-Al 2 O 3 The synthetic fiber filter cotton is a filter material, and the middle-effect filter cotton uses carbon nanotube synthetic fiber filter cotton as the filter material.
5. The asphalt plant waste gas and smoke treatment method according to claim 4, wherein the gamma-Al is used for treating the waste gas and the waste smoke of the asphalt plant 2 O 3 The preparation method of the synthetic fiber filter cotton comprises the following steps:
opening the polyester resin fiber after strong opening process, carding the fiber into uniform fiber, and implanting gamma-Al in the fiber carding process 2 O 3 Powder, gamma-Al 2 O 3 The powder accounts for 10-20% of the weight of the terylene resin fiber, and is paved into a net layer, then the net layer is heated to 200-220 ℃, and finally the gamma-Al is obtained after cooling and shaping 2 O 3 Synthetic fiber filter cotton.
6. The method for treating the exhaust gas and the waste smoke of the asphalt station according to claim 4, wherein the method for preparing the carbon nanotube synthetic fiber filter cotton comprises the following steps:
opening the clustered polyurethane resin fibers through a strong opening process, carding the fibers into fibers with uniform thickness, implanting carbon nanotube powder in the fibers in the carding process, wherein the addition amount of the carbon nanotubes accounts for 5-9% of the weight of the polyurethane resin fibers, paving the carbon nanotubes into a net layer, heating the net layer to 250-270 ℃, and finally cooling and shaping the net layer to obtain the carbon nanotube synthetic fiber filter cotton.
7. The method for treating the waste gas and the waste smoke of the asphalt plant according to claim 1, wherein 3 adsorption beds are set in the activated carbon adsorption tank in the step (4), and the designed air volume of each bed is 10000m 3 And h, carrying out automatic switching of adsorption and desorption when the main fan works.
8. The method for treating the exhaust gas and the waste smoke of the asphalt plant as claimed in claim 1, wherein the method for preparing the highly adsorbent honeycomb activated carbon in the step (4) comprises the following steps:
crushing and grinding rosin resin to be more than 120 meshes, and mixing the ground rosin with gamma-Al 2 O 3 Mixing the powder, the powdered activated carbon and the methylcellulose according to a weight ratio of 55-70 to 8-15 of 20-30.
9. The method for treating the exhaust gas and the exhaust smoke of the asphalt plant according to claim 1, wherein the catalyst adopted by the catalytic combustion device in the step (5) is a TFJF type catalyst, i.e., cordierite honeycomb ceramic is adopted as the first carrier, and gamma-Al is adopted 2 O 3 As a second carrier, and noble metals Pd and Pt are used as active components.
10. The asphalt station waste gas and smoke treatment method according to claim 1, wherein the temperature of the catalytic combustion device in the step (5) is 250-300 ℃, and heat generated by catalytic combustion is used for desorbing organic matters in the adsorption tank, so that energy can be 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 true CN115671972A (en) | 2023-02-03 |
| CN115671972B 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) |
Cited By (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 (15)
| 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 |
| JPH05146678A (en) * | 1991-11-29 | 1993-06-15 | Sumitomo Metal Mining Co Ltd | Active carbon honeycomb structure and production thereof |
| 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 |
| CN101422671A (en) * | 2008-11-12 | 2009-05-06 | 河南省安克林滤业有限公司 | Preparation method of anti-flaming washable filter material |
| JP2009131837A (en) * | 2007-11-02 | 2009-06-18 | Osaka Gas Chem Kk | Honeycomb adsorbing material and its producing method |
| US20130030340A1 (en) * | 2010-04-22 | 2013-01-31 | 3M Innovative Properties Company | Nonwoven fibrous webs containing chemically active particulates and methods of making and using same |
| CN104226098A (en) * | 2014-10-11 | 2014-12-24 | 北京嘉格伟业筑路科技有限公司 | Modified asphalt tail gas treating system and treating process thereof |
| CN105032032A (en) * | 2015-07-22 | 2015-11-11 | 刁广祥 | Diatom synthetic fiber filtering cotton and processing method |
| 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 |
| 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 |
| JP2019163414A (en) * | 2018-03-20 | 2019-09-26 | 住友ゴム工業株式会社 | Method for producing rubber/filler complex |
| US20200023310A1 (en) * | 2018-07-20 | 2020-01-23 | Jiangnan Environmental Protection Group Inc. | Acid gas treatment |
| US20200298170A1 (en) * | 2016-03-14 | 2020-09-24 | 3M Innovative Properties Company | Air filters comprising polymeric sorbents for aldehydes |
| 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 (15)
| 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 |
| JPH05146678A (en) * | 1991-11-29 | 1993-06-15 | Sumitomo Metal Mining Co Ltd | Active carbon honeycomb structure and production thereof |
| 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 |
| JP2009131837A (en) * | 2007-11-02 | 2009-06-18 | Osaka Gas Chem Kk | Honeycomb adsorbing material and its producing method |
| CN101422671A (en) * | 2008-11-12 | 2009-05-06 | 河南省安克林滤业有限公司 | Preparation method of anti-flaming washable filter material |
| US20130030340A1 (en) * | 2010-04-22 | 2013-01-31 | 3M Innovative Properties Company | Nonwoven fibrous webs containing chemically active particulates and methods of making and using same |
| CN104226098A (en) * | 2014-10-11 | 2014-12-24 | 北京嘉格伟业筑路科技有限公司 | Modified asphalt tail gas treating system and treating process thereof |
| CN105032032A (en) * | 2015-07-22 | 2015-11-11 | 刁广祥 | Diatom synthetic fiber filtering cotton and processing method |
| US20200298170A1 (en) * | 2016-03-14 | 2020-09-24 | 3M Innovative Properties Company | Air filters comprising polymeric sorbents for aldehydes |
| 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 |
| 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 |
| JP2019163414A (en) * | 2018-03-20 | 2019-09-26 | 住友ゴム工業株式会社 | Method for producing rubber/filler complex |
| US20200023310A1 (en) * | 2018-07-20 | 2020-01-23 | Jiangnan Environmental Protection Group Inc. | Acid gas treatment |
| CN216223635U (en) * | 2021-11-22 | 2022-04-08 | 杨丽 | Waste plastic recycling granulation waste gas purification combined device |
Non-Patent Citations (3)
| Title |
|---|
| 张襄楷,范晓丹,徐廷献: "γ-Al_2O_3膜改性污泥活性炭的制备及其脱硫性能", 《硅酸盐学报》 * |
| 王儒堂,许普查: "γ-Al_2O_3/活性炭复合材料的制备及除砷性能研究", 《煤炭加工与综合利用》 * |
| 陈长明主编: "《精细化学品配方工艺及原理分析》", 北京工业大学出版社 * |
Cited By (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115671972B (en) | 2023-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100441233C (en) | Adsorption and low temperature plasma combining indoor air purifying method | |
| CN208436600U (en) | A kind of bituminous mixing plant exhaust treatment system | |
| CN216223635U (en) | Waste plastic recycling granulation waste gas purification combined device | |
| KR101312414B1 (en) | A system and the method for cleaning harmful gas using corona discharge and catalyst | |
| CN101869800B (en) | Method and system for purifying flue gas generated by incinerating waste materials | |
| CN105032096A (en) | Purifying treatment system for industrial waste gas of heat-setting machine | |
| CN102941005A (en) | Integrated physical chemistry purification method for treating complex industry organic waste gas, device and application | |
| CN207413050U (en) | A kind of paint exhaust treatment device | |
| CN107362647A (en) | A kind of paint exhaust treatment device and method | |
| CN108554172A (en) | Dimethylamine exhaust gas controlling device and its technique in a kind of synthetic leather industry | |
| CN115671972B (en) | Treatment method for waste gas and waste smoke of asphalt station | |
| CN106902621A (en) | Purifier | |
| CN108786449A (en) | A kind of novel V0Cs adsorption activations desorption low-temperature catalytic treating method and its processing unit | |
| CN205717254U (en) | The high-efficiency environment friendly exhaust gas processing device that a kind of chemical plant is special | |
| CN110394042A (en) | Reclaimed rubber waste gas purification apparatus and method | |
| CN105688523A (en) | Plasma purifier for exhaust gas of automobile 4S shop | |
| CN207025024U (en) | Purifier | |
| CN101785951A (en) | Purification method for organic waste gas | |
| CN106139840A (en) | Purifier and method containing low concentration VOC waste gas | |
| CN204619702U (en) | A kind of purifier containing low concentration VOC waste gas | |
| CN102294161A (en) | Method for simultaneously removing dioxin and heavy metals from incineration smoke | |
| CN104399361B (en) | Waste gas processing method and device of a kind of roller kiln burning into ceramic foam filter | |
| CN208260511U (en) | Reclaimed rubber waste gas purification apparatus | |
| CN209020111U (en) | A kind of VOCs treatment device using concave convex rod absorption and superparamagnetic field magnetic solution | |
| KR100947341B1 (en) | Process for operating and removing odor and hydrocarbons in exhaust air stream in tire manufacturing plant |
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 |