A method for treating asphalt fume

Abstract

The present invention provides a method for treating asphalt flue gas, and belongs to the technical field of flue gas treatment. The present invention provides a method for treating asphalt flue gas, comprising the following steps: using polyester tire cloth to adsorb asphalt flue gas to obtain pre-treated asphalt flue gas; and sequentially subjecting the pre-treated asphalt flue gas to electrostatic capture and photocatalytic oxidation to obtain purified flue gas. The present invention combines the polyester tire cloth adsorption, electrostatic capture, and photocatalytic oxidation technologies. First, the polyester tire cloth adsorption can adsorb almost all filler dust and most of the asphalt smoke on the polyester tire cloth, which greatly reduces the burden of electrostatic capture and photocatalytic oxidation. Then, electrostatic capture is used to further remove dust. Finally, photocatalytic oxidation is used to decompose small molecular organic gases and odor substances to achieve the purpose of meeting emission standards, thereby achieving effective purification of asphalt flue gas.

Description

Technical Field

[0001] The invention belongs to the technical field of gas treatment, and in particular relates to a method for treating asphalt fume. Background Art

[0002] Polymer modified asphalt waterproofing membrane is the most important type of waterproofing material and is widely used in building materials. However, the asphalt fume generated during its production process has always been a difficult problem for environmental protection management in the industry. The main components of asphalt fume include asphalt fume, inorganic filler dust, and small molecular odor substances. It is composed of three phases: gas, liquid, and solid. The gas phase is a mixture of different gases, and its appearance is mostly smoke with low concentration and extremely dispersed; the liquid phase is very fine volatile condensate, and the particle size is mostly between 0.1 and 1.0 μm; the solid dust particles mainly come from powder fillers and modifiers, and have a large particle size and are easy to settle under the action of gravity. Another feature of asphalt fume is that it is easy to adhere. The asphalt vapor has a high condensation point (200°C). Therefore, during the collection, transportation and processing process, it is easy to adhere to the equipment and pipeline walls to form liquid to solid asphalt, which is difficult to eliminate, causing pipeline blockage and equipment failure. In addition to CO and SO, asphalt volatiles also contain X 、NO X In addition to common air pollutants such as 3,4-benzopyrene, p-xylene, butylbenzene, pentylbenzene, 2-methylheptane, 2-methylthiophene, cyclohexanone, dimethyl trisulfide, dimethyl tetrasulfide, benzothiazole, 2,2,4-trimethyl-1,2-dihydroquinoline, etc., which are highly toxic, irritating and even carcinogenic. For this asphalt flue gas with complex components and containing gas, liquid and solid pollutants at the same time, it is very easy to adhere to and block the treatment equipment when treated by conventional methods, making it difficult to completely purify it.

[0003] At present, the main methods for treating asphalt fume include combustion, absorption, adsorption, electrostatic capture and photocatalytic oxidation. Among them, the process of combining polyester tire cloth adsorption with activated carbon adsorption can effectively treat the fume, but the activated carbon becomes hazardous waste after saturation, which will cause secondary pollution. Therefore, how to effectively purify asphalt fume without causing secondary pollution has become a technical problem that needs to be solved in this field. Summary of the invention

[0004] The purpose of the present invention is to provide a method for treating asphalt fume. The method provided by the present invention can effectively purify asphalt fume without secondary pollution.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0006] The present invention provides a method for treating asphalt fume, comprising the following steps:

[0007] (1) Adsorbing asphalt fume with polyester tire cloth to obtain pre-treated asphalt fume;

[0008] (2) The pre-treated asphalt flue gas obtained in step (1) is subjected to electrostatic capture and photocatalytic oxidation in sequence to obtain purified flue gas.

[0009] Preferably, the flow rate of the asphalt fume in step (1) is 10000-20000m 3 / h.

[0010] Preferably, the model of the polyester tire cloth in step (1) includes national standard type 1 or national standard type 2.

[0011] Preferably, the adsorption in step (1) is performed in an adsorption device; the adsorption device comprises a shell;

[0012] An air outlet is provided on the top of the shell;

[0013] An air inlet is provided at the bottom of the shell;

[0014] A feed inlet and a discharge outlet are respectively arranged on both sides of the shell; the feed inlet and the discharge outlet are provided with sealing soft brushes.

[0015] Preferably, the vertical distance between the air inlet and the air outlet is 100 to 600 cm.

[0016] Preferably, the height of the feed port and the discharge port are independently 1 to 10 cm, and the width is independently 100 to 200 cm.

[0017] Preferably, the step (1) comprises: inputting asphalt fume into the shell from the air inlet, inputting polyester tire cloth into the shell from the feed port, the cloth surface of the polyester tire cloth being perpendicular to the flow direction of the asphalt fume, and adsorbing the asphalt fume, the obtained pre-treated asphalt fume is output from the shell from the air outlet, and the adsorbed polyester tire cloth is output from the shell from the discharge port.

[0018] Preferably, the feeding speed of the polyester tire cloth is 30-40 m / min.

[0019] Preferably, the temperature of the electrostatic capture in step (2) is 10-100° C., and the secondary voltage of the electrostatic capture is 30-80 kV.

[0020] Preferably, the light source of the photocatalytic oxidizer used for the photocatalytic oxidation in step (2) is a mercury lamp; the power of the light source is 10 to 300W.

[0021] The present invention provides a method for treating asphalt fume, comprising the following steps: using polyester tire cloth to adsorb asphalt fume to obtain pre-treated asphalt fume; subjecting the pre-treated asphalt fume to electrostatic capture and photocatalytic oxidation in sequence to obtain purified fume. The present invention combines the polyester tire cloth adsorption, electrostatic capture, and photocatalytic oxidation technologies. First, almost all filler dust and most of the asphalt fume can be adsorbed on the polyester tire cloth by adsorption using the polyester tire cloth, which greatly reduces the burden of electrostatic capture and photocatalytic oxidation. At the same time, the adsorbed polyester tire cloth can be used to prepare polymer-modified asphalt waterproofing membranes to avoid secondary pollution. Then, electrostatic capture is used to further remove dust, and finally, photocatalytic oxidation is used to decompose small molecular organic gases and odor substances to achieve the purpose of meeting emission standards, thereby achieving effective purification of asphalt fume. The results of the embodiment show that the particulate matter in the asphalt fume is 207mg / m 3 , asphalt smoke is 148mg / m 3 , non-methane total hydrocarbons are 62.1 mg / m 3 The adsorption efficiency of asphalt smoke in the pre-treated asphalt smoke obtained by adsorption on the polyester tire cloth is 86.8%, and the adsorption efficiency of particulate matter is 99.6%; the particulate matter in the purified flue gas is 3.2mg / m 3 , asphalt smoke is 12.1mg / m 3 , non-methane total hydrocarbons is 8.5mg / m 3 The adsorbed polyester tire cloth is used as the raw material of asphalt waterproofing membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the cross-sectional structure of the adsorption device in an embodiment of the present invention;

[0023] In the figure, A is the feed port, B is the discharge port, I is the air inlet, II is the air outlet, 1 is the shell, 2 is the explosion arrester, 3 is the sealing soft brush, 4 is the static eliminator, and 5 is the rotating roller;

[0024] Figure 2 The present invention is a process flow chart of the asphalt fume treatment method. DETAILED DESCRIPTION

[0025] The present invention provides a method for treating asphalt fume, comprising the following steps:

[0026] (1) Adsorbing asphalt fume with polyester tire cloth to obtain pre-treated asphalt fume;

[0027] (2) The pre-treated asphalt flue gas obtained in step (1) is subjected to electrostatic capture and photocatalytic oxidation in sequence to obtain purified flue gas.

[0028] The treatment method provided by the present invention is applicable to asphalt fume obtained by any method, including but not limited to asphalt oxidation, tire cloth oiling process, film coating process and other emission collection. The present invention has no special limitation on the composition of the asphalt fume, and conventional components are sufficient.

[0029] The present invention uses polyester tire cloth to absorb asphalt smoke to obtain pre-treated asphalt smoke. The present invention uses polyester tire cloth to absorb asphalt smoke, and can absorb almost all filler dust and most of the asphalt smoke on the polyester tire cloth, which greatly reduces the burden of post-treatment. At the same time, the polyester tire cloth after adsorption can be used to prepare polymer modified asphalt waterproof coiled material, so that pollutants are fixed in the waterproof coiled material, avoiding secondary pollution.

[0030] In the present invention, the flow rate of the asphalt fume is preferably 10000-20000m 3 / h; the type of the polyester tire cloth includes national standard type 1 or national standard type 2. The processing method provided by the present invention adopts any polyester tire cloth.

[0031] In the present invention, the adsorption is preferably performed in an adsorption device.

[0032] like Figure 1 As shown, in one embodiment of the present invention, the adsorption device includes a shell 1; the cross section of the shell 1 is hexagonal. The present invention has no special restrictions on the material and thickness of the shell, which can be adjusted as needed. The present invention facilitates the diffusion and adsorption of asphalt fume in the device by setting the cross section of the shell to be hexagonal, thereby further improving the adsorption performance.

[0033] like Figure 1 As shown, in one embodiment of the present invention, the top of the housing 1 is provided with an air outlet II, and the bottom of the housing 1 is provided with an air inlet I; the air inlet I and the air outlet II are located in the same vertical direction. The present invention arranges the air inlet and the air outlet in the same vertical direction, which is convenient for installation and saves space.

[0034] like Figure 1 As shown, in one embodiment of the present invention, the width of the air inlet I and the air outlet II are the same; the vertical distance between the air inlet and the air outlet is preferably 100 to 600 cm. The present invention sets the vertical distance between the air inlet and the air outlet within the above range to meet the process requirements and save space.

[0035] In one embodiment of the present invention, the air inlet I and the air outlet II are independently connected to the air duct. The present invention has no requirements on the shape and size of the air inlet and the air outlet, as long as they match the air duct.

[0036] like Figure 1As shown, in one embodiment of the present invention, the pipe connected to the air inlet I is provided with an explosion arrester 2. The explosion arrester provided in the present invention can eliminate the potential safety hazard caused by high-temperature flue gas.

[0037] like Figure 1 As shown, in one embodiment of the present invention, a feed port A and a discharge port B are respectively provided on both sides of the housing 1; the feed port A and the discharge port B are provided with a sealing soft brush 3; the feed port A and the discharge port B are located at the same horizontal plane; the feed port A and the discharge port B have the same height; the height of the feed port and the discharge port are independently preferably 1 to 10 cm; the width of the feed port and the discharge port are independently preferably 100 to 200 cm. The present invention sets the height of the feed port and the discharge port within the above range to meet the requirements of feeding and discharging, and to meet the sealing requirements to the maximum extent.

[0038] like Figure 1 As shown, in one embodiment of the present invention, the feed port A and the discharge port B are independently connected to an electrostatic eliminator 4. The present invention has no special limitation on the model of the electrostatic eliminator, and an instrument familiar to those skilled in the art can be used. The present invention has no requirements on the connection method, and operations familiar to those skilled in the art can be used. The present invention is provided with an electrostatic eliminator to eliminate static electricity generated by the friction between the polyester tire cloth and the sealing soft brush, thereby eliminating the safety hazards caused by static electricity.

[0039] In the present invention, the widths of the feed port, the discharge port, the sealing soft brush and the polyester tire cloth are preferably the same. The feed port, the discharge port, the sealing soft brush and the polyester tire cloth are set to the same width in the present invention, which can further improve the sealing performance of the device.

[0040] like Figure 1 As shown, in one embodiment of the present invention, a rotating roller 5 is further provided on the inner wall of the housing 1, and the rotating roller 5 is perpendicular to the flow direction of the asphalt fume; the rotating roller 5 is parallel to the width direction of the feed port A. The present invention has no special restrictions on the material and diameter of the rotating roller, and it can be selected according to common sense. The rotating roller of the present invention is a driven roller and does not require additional power.

[0041] In one embodiment of the present invention, the number of the rotating rollers 5 is 4, and the rotating rollers are arranged in parallel and not in the same vertical direction. The present invention has no special restrictions on the vertical height of the rotating rollers, which can be adjusted as needed. The present invention has no special restrictions on the spacing of the rotating rollers, which can be judged according to common sense. When the present invention sets 4 rotating rollers, the middle two play a supporting role, and the side two (feed port, discharge port) play a steering role.

[0042] like Figure 1As shown, in one embodiment of the present invention, the number of the rotating rollers 5 is 13; two of the rollers 5 are respectively arranged on one side of the feed port A and one side of the discharge port B, and the remaining rotating rollers are arranged in three rows; the three rows are not in the same horizontal plane; the number of the rotating rollers in the bottom row and the rotating rollers in the middle row of the three rows is 4 each. The present invention does not have any special restrictions on the spacing of the rotating rollers, and it can be judged according to common sense. The present invention arranges the rotating rollers in three rows to adsorb asphalt fumes multiple times. The present invention can adjust the number and direction of adsorption of polyester tire cloth by setting the arrangement mode and data of the rotating rollers; the number and distribution of the rotating rollers are arranged according to the purification requirements of asphalt fumes.

[0043] The adsorption device provided by the present invention can further improve the purification effect of asphalt fume.

[0044] In the present invention, when the asphalt fume is adsorbed by the polyester tire cloth, it is preferred that the asphalt fume is input into the shell from the air inlet, the polyester tire cloth is input into the shell from the feed port, the cloth surface of the polyester tire cloth is perpendicular to the flow direction of the asphalt fume, and the asphalt fume obtained by the pretreatment is output from the shell from the air outlet, and the polyester tire cloth after adsorption is output from the shell from the discharge port; the feed speed of the polyester tire cloth is preferably 30 to 40 m / min. The present invention can further improve the purification effect of asphalt fume by controlling the feed speed of the polyester tire cloth.

[0045] In the present invention, the width of the polyester tire cloth is preferably the same as the width of the feed port.

[0046] After obtaining the pre-treated asphalt flue gas, the present invention sequentially performs electrostatic capture and photocatalytic oxidation on the pre-treated asphalt flue gas to obtain purified flue gas.

[0047] In the present invention, the temperature of the electrostatic capture is preferably 10-100°C, more preferably 40-60°C; the operating voltage of the electrostatic capture is preferably 30-80kV, more preferably 50-60kV. The present invention has no special limitation on the time of the electrostatic capture, and the operation familiar to those skilled in the art can be adopted.

[0048] In the present invention, the electrostatic collector used for electrostatic capture is preferably a dry electrostatic collector or a wet electrostatic collector, more preferably a wet electrostatic collector. The present invention has no special limitation on the model of the electrostatic collector, and any instrument or equipment familiar to those skilled in the art can be used.

[0049] In one embodiment of the present invention, the operating voltage of the electrostatic collector is preferably 60 kV, and the effective electric field area is preferably 5.8 m 2 The number of corona poles is preferably 166.

[0050] In the present invention, the electrostatic collector is preferably connected to the adsorption device through a pipeline.

[0051] In the present invention, the light source in the photocatalytic oxidizer used in the photocatalytic oxidation is preferably a mercury lamp; the power of the light source is preferably 10 to 300W; the catalyst used in the photocatalytic oxidation is preferably one of nano-titanium dioxide and nano-iron oxide. The present invention has no special limitation on the photocatalytic oxidizer, and an instrument familiar to those skilled in the art can be used. The present invention has no special limitation on the source of the catalyst, and a commercially available product familiar to those skilled in the art can be used. The present invention has no requirements on the specific process parameters of the photocatalytic oxidation, and they can be selected according to common sense.

[0052] In the present invention, the photocatalytic oxidizer is preferably connected to the electrostatic collector through a pipeline; the photocatalytic oxidizer is preferably connected to the chimney through a pipeline and a fan.

[0053] In the present invention, the asphalt fume enters the shell from the air inlet, enters the electrostatic capture device through the fan after being adsorbed by the polyester tire cloth once or multiple times, further purifies the dust and asphalt fume through electrostatic capture, and then enters the photocatalytic oxidation device for oxidation and decomposition of small molecular odor substances. After meeting the standards, the gas is discharged into the air through the chimney; by integrating the technology of polyester tire cloth adsorption, electrostatic capture for further adsorption and purification, and photocatalytic oxidation for degradation of odor substances, most of the dust particles and asphalt fumes in the asphalt fume are solidified in the finished coiled material, thus realizing low-cost, high-efficiency and green treatment of asphalt fume in the production of waterproof coiled materials, without secondary Pollution; Among them, asphalt fume adsorption technology can effectively absorb almost all dust and most of the asphalt fume in the asphalt fume, which is conducive to the implementation of subsequent treatment processes. Compared with traditional absorption and adsorption methods, it can solidify pollutants in waterproof membrane products, and use the polyester tire cloth adsorbed with pollutants as the raw material of asphalt waterproof membrane. Therefore, there is no transfer of pollutants and no secondary pollution. It is a green treatment technology; and the treatment cost of polyester tire cloth adsorption is only 1 / 100 to 1 / 200 of the combustion method, and does not require flammable and explosive fuels such as natural gas, which greatly reduces safety risks.

[0054] The present invention solves the problem of asphalt fume clogging treatment equipment and achieves the purpose of low-cost emission compliance through an integrated process of polyester tire cloth adsorption, electrostatic capture and photocatalytic oxidation technology coupling.

[0055] The present invention uses the production substrate as the asphalt fume adsorption material, and the pollutant asphalt fume is solidified in the product, thereby avoiding secondary pollution and making use of the pollutants as resources; the production substrate is used to adsorb asphalt fume, and the number of adsorption times can be flexibly adjusted according to needs, with high adsorption efficiency.

[0056] The process flow chart of the asphalt fume treatment method of the present invention is as follows: Figure 2 As shown. Figure 2 It can be seen that asphalt fume can come from asphalt oxidation, tire cloth oil immersion section, coating section and other emission collection; the asphalt fume can be discharged into the air after polyester tire cloth adsorption, electrostatic capture and photocatalytic oxidation.

[0057] The technical solutions in the present invention will be described clearly and completely below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] Example 1

[0059] The adsorption device of this embodiment includes a housing 1;

[0060] The cross section of the housing 1 is hexagonal;

[0061] The shell is made of tinplate;

[0062] The top of the housing 1 is provided with an air outlet II, and the bottom of the housing 1 is provided with an air inlet I; the air inlet I and the air outlet II are located in the same vertical direction;

[0063] The air inlet I and the air outlet II have the same width;

[0064] The vertical distance between the air inlet and the air outlet is 300 cm;

[0065] The air inlet I and the air outlet II are respectively connected to the air duct;

[0066] The pipeline connected to the air inlet 1 is provided with an explosion arrester 2;

[0067] The housing 1 is provided with a feed inlet A and a discharge port B on both sides thereof; the feed inlet A and the discharge port B are provided with sealing soft brushes 3;

[0068] The feed port A and the discharge port B have the same height, both 10 cm, and the width is 100 cm;

[0069] The feed port A and the discharge port B are connected to a static eliminator 4;

[0070] The widths of the feed port, the discharge port and the sealing soft brush are the same;

[0071] A rotating roller 5 is also provided on the inner wall of the housing 1, and the rotating roller 5 is perpendicular to the flow direction of the asphalt fume; the rotating roller 5 is parallel to the width direction of the feed port A;

[0072] The number of the rotating rollers 5 is 4, and the rotating rollers are arranged in parallel and not in the same vertical direction; when there are 4 rotating rollers, the middle two play a supporting role, and the side two (feed port and discharge port) play a steering role;

[0073] The method for treating asphalt fume is as follows:

[0074] (1) Set the flow rate to 20000m 3 / h asphalt flue gas (the particulate matter in asphalt flue gas is 212mg / m 3 , asphalt smoke is 153mg / m 3 , non-methane total hydrocarbons are 65.7 mg / m 3 ) After organized collection, the asphalt fume is input into the shell 1 from the air inlet I through the pressure regulating fan, and the international type 1 polyester tire cloth is input into the shell 1 from the feed port A, and the cloth surface of the polyester tire cloth is perpendicular to the flow direction of the asphalt fume for adsorption, and the obtained pre-treated asphalt fume is output from the shell 1 from the air outlet II, and the polyester tire cloth after adsorption is output from the shell 1 from the discharge port B as the raw material of the asphalt waterproofing coiled material; wherein, the feeding speed of the polyester tire cloth is 30m / min; and the width of the polyester tire cloth is the same as the width of the feed port;

[0075] (2) The pre-treated asphalt flue gas obtained in step (1) is electrostatically captured in a wet electrostatic collector, and then enters a photocatalytic oxidizer for photocatalytic oxidation to obtain purified flue gas; wherein the operating voltage of the wet electrostatic collector is 60 kV, and the effective electric field area is 5.8 m 2 The number of corona poles is 166; the catalyst in the photocatalytic oxidizer is TiO2 (with nickel foam as the carrier), and the high-pressure mercury lamp is 400W, 6 pcs.

[0076] The asphalt fume pre-treated by the polyester tire cloth in Example 1 was measured, and the adsorption efficiency of asphalt fume was 68.6%, and the adsorption efficiency of particulate matter was 95.2%. The purified flue gas was measured, and the particulate matter in the flue gas was 8.6 mg / m 3 , asphalt smoke is 33.7mg / m 3 , non-methane total hydrocarbons are 14.4 mg / m 3 .

[0077] Example 2

[0078] Figure 1 It is a schematic diagram of the cross-sectional structure of the adsorption device in an embodiment of the present invention;

[0079] In the figure, A is the feed port, B is the discharge port, I is the air inlet, II is the air outlet, 1 is the shell, 2 is the explosion arrester, 3 is the sealing soft brush, 4 is the static eliminator, and 5 is the rotating roller.

[0080] The difference between the adsorption device of the embodiment 1 is only the number of rotating rollers, and the number of rotating rollers 5 is 13; two rotating rollers of the rollers 5 are respectively arranged on the side of the feed port A and the side of the discharge port B, and the remaining rotating rollers are arranged in three rows; the three rows are not in the same horizontal plane; the number of rotating rollers in the bottom row and the number of rotating rollers in the middle row of the three rows are 4 each;

[0081] The method for treating asphalt fume is as follows:

[0082] (1) Set the flow rate to 20000m 3 / h asphalt fume (the particulate matter in asphalt fume is 207mg / m 3 , asphalt smoke is 148mg / m 3 , non-methane total hydrocarbons are 62.1 mg / m 3 ) After organized collection, the asphalt fume is input into the shell 1 from the air inlet I through the pressure regulating fan, and the international type 1 polyester tire cloth is input into the shell 1 from the feed port A, and the cloth surface of the polyester tire cloth is perpendicular to the flow direction of the asphalt fume for adsorption, and the obtained pre-treated asphalt fume is output from the shell 1 from the air outlet II, and the polyester tire cloth after adsorption is output from the shell 1 from the discharge port B as the raw material of the asphalt waterproofing coiled material; wherein, the feeding speed of the polyester tire cloth is 30m / min; and the width of the polyester tire cloth is the same as the width of the feed port;

[0083] (2) The pre-treated asphalt flue gas obtained in step (1) is electrostatically captured in a wet electrostatic collector, and then enters a photocatalytic oxidizer for photocatalytic oxidation to obtain purified flue gas; wherein the operating voltage of the wet electrostatic collector is 60 kV, and the effective electric field area is 5.8 m 2 The number of corona poles is 166; the catalyst in the photocatalytic oxidizer is TiO2 (with nickel foam as the carrier), and the high-pressure mercury lamp is 400W, 6 pcs.

[0084] The asphalt fume pre-treated by the polyester tire cloth in Example 2 was measured to have an adsorption efficiency of 86.8% for asphalt fume and 97.6% for particulate matter. The particulate matter in the purified flue gas was 3.2 mg / m 3 , asphalt smoke is 12.1mg / m 3 , non-methane total hydrocarbons is 8.5mg / m 3 .

[0085] It can be seen from the above embodiments that the treatment method provided by the present invention can perform low-cost, high-efficiency and green treatment on asphalt fume without secondary pollution.

[0086] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for treating asphalt fume, comprising the following steps: (1) Asphalt fume is input into the shell from the air inlet, and polyester tire cloth is input into the shell from the feed port, and the cloth surface of the polyester tire cloth is perpendicular to the flow direction of the asphalt fume for adsorption, and the pre-treated asphalt fume is output from the shell from the air outlet, and the polyester tire cloth after adsorption is output from the shell from the discharge port; the feed speed of the polyester tire cloth is 30-40 m / min; the polyester tire cloth after adsorption is used as the raw material of the asphalt waterproofing coiled material; (2) subjecting the pre-treated asphalt flue gas obtained in step (1) to electrostatic capture and photocatalytic oxidation in sequence to obtain purified flue gas; The adsorption in step (1) is performed in an adsorption device; the adsorption device comprises a shell; An air outlet is provided on the top of the shell; An air inlet is provided at the bottom of the shell; A feed inlet and a discharge outlet are respectively arranged on both sides of the shell; the feed inlet and the discharge outlet are provided with sealing soft brushes.

2. The processing method according to claim 1, characterized in that: The flow rate of the asphalt fume in step (1) is 10000-20000m 3 / h.

3. The processing method according to claim 1, characterized in that: The type of the polyester tire cloth in the step (1) includes national standard type 1 or national standard type 2.

4. The processing method according to claim 1, characterized in that: The vertical distance between the air inlet and the air outlet is 100-600 cm.

5. The processing method according to claim 1, characterized in that: The height of the feed port and the discharge port are independently 1-10 cm, and the width is independently 100-200 cm.

6. The processing method according to claim 1, characterized in that: The temperature of electrostatic capture in step (2) is 10-100° C., and the secondary voltage of electrostatic capture is 30-80 kV.

7. The processing method according to claim 1, characterized in that: The light source of the photocatalytic oxidizer used for the photocatalytic oxidation in step (2) is a mercury lamp; the power of the light source is 10-300W.

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