CN118663063A - Asphalt flue gas treatment method - Google Patents
Asphalt flue gas treatment method Download PDFInfo
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- CN118663063A CN118663063A CN202410871725.1A CN202410871725A CN118663063A CN 118663063 A CN118663063 A CN 118663063A CN 202410871725 A CN202410871725 A CN 202410871725A CN 118663063 A CN118663063 A CN 118663063A
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- 239000010426 asphalt Substances 0.000 title claims abstract description 121
- 238000000034 method Methods 0.000 title claims abstract description 39
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 239000003546 flue gas Substances 0.000 title claims abstract description 30
- 239000004744 fabric Substances 0.000 claims abstract description 65
- 229920000728 polyester Polymers 0.000 claims abstract description 60
- 238000001179 sorption measurement Methods 0.000 claims abstract description 50
- 230000001699 photocatalysis Effects 0.000 claims abstract description 33
- 230000003647 oxidation Effects 0.000 claims abstract description 26
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 26
- 239000000779 smoke Substances 0.000 claims abstract description 8
- 239000003517 fume Substances 0.000 claims description 86
- 230000008569 process Effects 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 12
- 239000007800 oxidant agent Substances 0.000 claims description 10
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 5
- 229910052753 mercury Inorganic materials 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 10
- 239000007789 gas Substances 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000000746 purification Methods 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 6
- 239000000945 filler Substances 0.000 abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 14
- 239000000463 material Substances 0.000 description 11
- 239000013618 particulate matter Substances 0.000 description 9
- 101001121408 Homo sapiens L-amino-acid oxidase Proteins 0.000 description 7
- 102100026388 L-amino-acid oxidase Human genes 0.000 description 7
- 239000003344 environmental pollutant Substances 0.000 description 7
- 231100000719 pollutant Toxicity 0.000 description 7
- 229930195733 hydrocarbon Natural products 0.000 description 6
- 150000002430 hydrocarbons Chemical class 0.000 description 6
- 238000004078 waterproofing Methods 0.000 description 6
- 238000004880 explosion Methods 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
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- 239000007788 liquid Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- ZNRLMGFXSPUZNR-UHFFFAOYSA-N 2,2,4-trimethyl-1h-quinoline Chemical compound C1=CC=C2C(C)=CC(C)(C)NC2=C1 ZNRLMGFXSPUZNR-UHFFFAOYSA-N 0.000 description 2
- JVSWJIKNEAIKJW-UHFFFAOYSA-N 2-Methylheptane Chemical compound CCCCCC(C)C JVSWJIKNEAIKJW-UHFFFAOYSA-N 0.000 description 2
- 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
- YWHLKYXPLRWGSE-UHFFFAOYSA-N Dimethyl trisulfide Chemical compound CSSSC YWHLKYXPLRWGSE-UHFFFAOYSA-N 0.000 description 2
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 description 2
- PWATWSYOIIXYMA-UHFFFAOYSA-N Pentylbenzene Chemical compound CCCCCC1=CC=CC=C1 PWATWSYOIIXYMA-UHFFFAOYSA-N 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 2
- OCKPCBLVNKHBMX-UHFFFAOYSA-N butylbenzene Chemical compound CCCCC1=CC=CC=C1 OCKPCBLVNKHBMX-UHFFFAOYSA-N 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- XQQBUAPQHNYYRS-UHFFFAOYSA-N 2-methylthiophene Chemical compound CC1=CC=CS1 XQQBUAPQHNYYRS-UHFFFAOYSA-N 0.000 description 1
- QENGPZGAWFQWCZ-UHFFFAOYSA-N Methylthiophene Natural products CC=1C=CSC=1 QENGPZGAWFQWCZ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- NPNIZCVKXVRCHF-UHFFFAOYSA-N dihydrocarbyl tetrasulfide Natural products CSSSSC NPNIZCVKXVRCHF-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- UJRYDUDEJGXDNA-UHFFFAOYSA-N quinoline-4-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC=NC2=C1 UJRYDUDEJGXDNA-UHFFFAOYSA-N 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000005028 tinplate Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
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- 238000012546 transfer Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/04—Plant or installations having external electricity supply dry type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
本发明提供了一种沥青烟气的处理方法，属于烟气处理技术领域。本发明提供了一种沥青烟气的处理方法，包括以下步骤：将沥青烟气采用聚酯胎布进行吸附，得到前处理的沥青烟气；将所述前处理的沥青烟气依次进行静电捕集和光催化氧化，得到净化的烟气。本发明通过聚酯胎布吸附、静电捕集、光催化氧化技术的组合，首先，利用聚酯胎布吸附能够将几乎全部填料粉尘、绝大部分沥青烟吸附在聚酯胎布上，极大减轻了静电捕集和光催化氧化的负担，然后再通过静电捕集进一步除尘，最后采用光催化氧化分解小分子有机气体及异味物质，达到达标排放的目的，从而实现对沥青烟气的有效净化。
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
技术领域Technical Field
本发明属于气体处理技术领域，具体涉及一种沥青烟气的处理方法。The invention belongs to the technical field of gas treatment, and in particular relates to a method for treating asphalt fume.
背景技术Background Art
聚合物改性沥青防水卷材是防水材料中最主要的品种，在建筑材料中得到广泛的应用，但在其生产过程中产生的沥青烟气一直是行业环保治理的难题。沥青烟气主要成分包括沥青烟、无机填料粉尘以及小分子异味物质等，由气、液、固三相组成：气相部分是不同气体的混合物，表现状态多为浓度不高又极为分散的烟雾；液相部分是十分细微的挥发冷凝物，粒径多在0.1～1.0μm之间；固相粉尘粒子主要源于粉体填料、改性剂，粒径较大，容易在重力作用下发生沉降。沥青烟气还有一个特点就是易粘附，其中的沥青蒸气凝结点较高(200℃)，因此，在收集、输送及处理过程中易粘附于设备和管道壁上形成液态至固态沥青，难以消除，造成管道堵塞和设备失效。沥青挥发物中除了含有CO、SOX、NOX等常见的大气污染物以外，还含有3,4-苯并芘、对二甲苯、丁苯、戊苯、2-甲基庚烷、2-甲基噻吩、环己酮、二甲基三硫、二甲基四硫醚、苯并噻唑、2,2,4-三甲基-1,2-二氢喹啉等毒性大、刺激性恶臭甚至是强致癌物质。对于这种成分复杂、又同时含有气、液、固三态污染物的沥青烟气，用常规的方法处理时，非常容易粘附并污堵处理装置，很难将其完全净化处理。Polymer modified asphalt waterproofing membrane is the main 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 in the industry. The main components of asphalt fume include asphalt fume, inorganic filler dust, and small molecular odor substances, etc. It is composed of three phases: gas, liquid, and solid: the gas phase is a mixture of different gases, and the state of expression 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, with a large particle size and easy to settle under the action of gravity. Another feature of asphalt fume is that it is easy to adhere. The condensation point of asphalt vapor is relatively high (200°C). Therefore, it is easy to adhere to the equipment and pipeline walls during collection, transportation and processing to form liquid to solid asphalt, which is difficult to eliminate, causing pipeline blockage and equipment failure. In addition to common air pollutants such as CO, SO X , and NO X , asphalt volatiles also contain 3,4-benzopyrene, p-xylene, butylbenzene, pentylbenzene, 2-methylheptane, 2-methylthiophene, cyclohexanone, dimethyl trisulfide, dimethyl tetrasulfide, benzothiazole, 2,2,4-trimethyl-1,2-dihydroquinoline and other highly toxic, irritating and smelly substances, and even strong carcinogens. For asphalt flue gas with complex components and containing gaseous, 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.
目前，治理沥青烟气的主要方法有燃烧法、吸收法、吸附法、静电捕集法和光催化氧化法等，其中聚酯胎布吸附和活性炭吸附结合的工艺虽然能够有效处理烟气，但其活性炭吸附饱和后成为危险废弃物，会造成二次污染。因此，如何对沥青烟气进行有效净化时不造成二次污染成为本领域亟待解决的技术难题。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.
发明内容Summary of the invention
本发明的目的在于提供一种沥青烟气的处理方法。本发明提供的处理方法能够对沥青烟气进行有效净化，且无二次污染。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.
为了实现上述发明目的，本发明提供以下技术方案：In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:
本发明提供了一种沥青烟气的处理方法，包括以下步骤：The present invention provides a method for treating asphalt fume, comprising the following steps:
(1)将沥青烟气采用聚酯胎布进行吸附，得到前处理的沥青烟气；(1) Adsorbing asphalt fume with polyester tire cloth to obtain pre-treated asphalt fume;
(2)将所述步骤(1)得到的前处理的沥青烟气依次进行静电捕集和光催化氧化，得到净化的烟气。(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.
优选地，所述步骤(1)中沥青烟气的流量为10000～20000m3/h。Preferably, the flow rate of the asphalt fume in step (1) is 10,000 to 20,000 m 3 /h.
优选地，所述步骤(1)中聚酯胎布的的型号包括国标1型或国标2型。Preferably, the model of the polyester tire cloth in step (1) includes national standard type 1 or national standard type 2.
优选地，所述步骤(1)中的吸附在吸附装置中进行；所述吸附装置包括壳体；Preferably, the adsorption in step (1) is performed in an adsorption device; the adsorption device comprises a shell;
所述壳体的顶部设置有出风口；An air outlet is provided on the top of the shell;
所述壳体的底部设置有进风口；An air inlet is provided at the bottom of the shell;
所述壳体的两侧分别设置有进料口和出料口；所述进料口和出料口设有密封软刷。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.
优选地，所述进风口和出风口的垂直距离为100～600cm。Preferably, the vertical distance between the air inlet and the air outlet is 100 to 600 cm.
优选地，所述进料口和出料口的高度独立地为1～10cm，宽度独立地为100～200cm。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.
优选地，所述步骤(1)包括：将沥青烟气由进风口输入壳体，聚酯胎布由进料口输入壳体，所述聚酯胎布的布面垂直于沥青烟气的流动方向，进行吸附，得到的前处理的沥青烟气由出风口输出壳体，吸附后的聚酯胎布由出料口输出壳体。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 polyester tire cloth after adsorption is output from the shell from the discharge port.
优选地，所述聚酯胎布的进料速度为30～40m/min。Preferably, the feeding speed of the polyester tire cloth is 30-40 m/min.
优选地，所述步骤(2)中静电捕集的温度为10～100℃，所述静电捕集的二次电压为30～80kV。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.
优选地，所述步骤(2)中光催化氧化采用的光催化氧化器中光源为汞灯；所述光源的功率为10～300W。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.
本发明提供了一种沥青烟气的处理方法，包括以下步骤：将沥青烟气采用聚酯胎布进行吸附，得到前处理的沥青烟气；将所述前处理的沥青烟气依次进行静电捕集和光催化氧化，得到净化的烟气。本发明通过聚酯胎布吸附、静电捕集、光催化氧化技术的组合，首先，利用聚酯胎布吸附能够将几乎全部填料粉尘、绝大部分沥青烟吸附在聚酯胎布上，极大减轻了静电捕集和光催化氧化的负担，同时吸附后的聚酯胎布可以用于制备聚合物改性沥青防水卷材，避免了二次污染；然后再通过静电捕集进一步除尘，最后采用光催化氧化分解小分子有机气体及异味物质，达到达标排放的目的，从而实现对沥青烟气的有效净化。实施例的结果显示，沥青烟气中颗粒物为207mg/m3，沥青烟为148mg/m3，非甲烷总烃为62.1mg/m3，经聚酯胎布吸附得到的前处理的沥青烟气中沥青烟的吸附效率为86.8％，颗粒物的吸附效率为99.6％；净化的烟气中颗粒物为3.2mg/m3，沥青烟为12.1mg/m3，非甲烷总烃为8.5mg/m3，吸附后的聚酯胎布作为沥青防水卷材的原料。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; and sequentially performing electrostatic capture and photocatalytic oxidation on the pre-treated asphalt fume to obtain purified fume. 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 fume on the polyester tire cloth, which greatly reduces the burden of electrostatic capture and photocatalytic oxidation. At the same time, the polyester tire cloth after adsorption can be used to prepare polymer modified asphalt waterproofing coiled materials, avoiding secondary pollution; then further dust removal is performed by electrostatic capture, 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 flue gas is 207 mg/m 3 , the asphalt smoke is 148 mg/m 3 , and the non-methane total hydrocarbons are 62.1 mg/m 3 . The adsorption efficiency of the asphalt smoke in the pre-treated asphalt flue gas obtained by adsorption by the polyester tire cloth is 86.8%, and the adsorption efficiency of the particulate matter is 99.6%; the particulate matter in the purified flue gas is 3.2 mg/m 3 , the asphalt smoke is 12.1 mg/m 3 , and the non-methane total hydrocarbons are 8.5 mg/m 3 . The polyester tire cloth after adsorption is used as the raw material of the asphalt waterproofing membrane.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为本发明实施例中吸附装置的截面结构示意图；FIG1 is a schematic diagram of the cross-sectional structure of an adsorption device according to an embodiment of the present invention;
图中，A为进料口，B为出料口，I为进风口，II为出风口，1为壳体，2为阻爆器，3为密封软刷，4为静电消除器，5为转动辊轴；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;
图2为本发明沥青烟气的处理方法的工艺流程图。FIG. 2 is a process flow chart of the asphalt fume treatment method of the present invention.
具体实施方式DETAILED DESCRIPTION
本发明提供了一种沥青烟气的处理方法，包括以下步骤：The present invention provides a method for treating asphalt fume, comprising the following steps:
(1)将沥青烟气采用聚酯胎布进行吸附，得到前处理的沥青烟气；(1) Adsorbing asphalt fume with polyester tire cloth to obtain pre-treated asphalt fume;
(2)将所述步骤(1)得到的前处理的沥青烟气依次进行静电捕集和光催化氧化，得到净化的烟气。(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.
本发明提供的处理方法适用于任何方法得到的沥青烟气，包括但不限于沥青氧化、胎布浸油工段、覆膜工段和其他排放收集。本发明对所述沥青烟气的组成没有特殊的限定，常规成分即可。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.
本发明将沥青烟气采用聚酯胎布进行吸附，得到前处理的沥青烟气。本发明采用聚酯胎布对沥青烟气进行吸附，几乎能够将全部填料粉尘、绝大部分沥青烟吸附在聚酯胎布上，极大减轻了后处理的负担，同时吸附后的聚酯胎布可以用于制备聚合物改性沥青防水卷材，使污染物固定于防水卷材中，避免了二次污染。The present invention uses polyester tire cloth to absorb asphalt fume to obtain pre-treated asphalt fume. The present invention uses polyester tire cloth to absorb asphalt fume, and can absorb almost all filler dust and most of the asphalt fume 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.
在本发明中，所述沥青烟气的流量优选为10000～20000m3/h；所述聚酯胎布的的型号包括国标1型或国标2型。本发明提供的处理方法采用任何的聚酯胎布。In the present invention, the flow rate of the asphalt fume is preferably 10000-20000 m 3 /h; the model of the polyester tire cloth includes national standard type 1 or national standard type 2. The treatment method provided by the present invention adopts any polyester tire cloth.
在本发明中，所述吸附优选在吸附装置中进行。In the present invention, the adsorption is preferably performed in an adsorption device.
如图1所示，在本发明的一个实施例中，所述吸附装置包括壳体1；所述壳体1的横截面为六边形。本发明对所述壳体的材质和厚度没有特殊的限定，根据需要进行调整即可。本发明通过将壳体的横截面设置为六边形，便于沥青烟气在装置内的扩散与吸附，从而进一步提高了吸附性能。As shown in FIG1 , in one embodiment of the present invention, the adsorption device comprises a shell 1; the cross section of the shell 1 is a hexagon. 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 a hexagon, thereby further improving the adsorption performance.
如图1所示，在本发明的一个实施例中，所述壳体1的顶部设置有出风口II，所述壳体1的底部设置有进风口I；所述进风口I和出风口II位于同一垂直方向。本发明将进风口和出风口设置于同一垂直方向能够方便安装，节省空间。As shown in Figure 1, 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.
如图1所示，在本发明的一个实施例中，所述进风口I和出风口II的宽度相同；所述进风口和出风口的垂直距离优选为100～600cm。本发明将进风口和出风口的垂直距离设置在上述范围内既可以满足工艺需求，又可以节约空间。As shown in Figure 1, in one embodiment of the present invention, the widths 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.
在本发明的一个实施例中，所述进风口I和出风口II独立地与风道连接。本发明对所述进风口和出风口的形状和尺寸没有要求，只要与风道相匹配即可。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.
如图1所示，在本发明的一个实施例中，所述进风口I相连的管道设置有阻爆器2。本发明设置阻爆器能够消除因高温烟气带来的安全隐患。As shown in Fig. 1, 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.
如图1所示，在本发明的一个实施例中，所述壳体1的两侧分别设置有进料口A和出料口B；所述进料口A和出料口B设有密封软刷3；所述进料口A和出料口B位于同一水平面；所述进料口A和出料口B的高度相同；所述进料口和出料口的高度独立地优选为1～10cm；所述进料口和出料口的宽度独立地优选为100～200cm。本发明将进料口和出料口的高度设置在上述范围内既可以满足进料和出料的需求，又可以最大限度的满足密封的要求。As shown in FIG1 , 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.
如图1所示，在本发明的一个实施例中，所述进料口A和出料口B独立地连接有静电消除器4。本发明对所述静电消除器的型号没有特殊的限定，采用本领域技术人员熟知的仪器即可。本发明对所述连接的方式没有要求，采用本领域技术人员熟知的操作即可。本发明设置静电消除器，消除了因聚酯胎布与密封软刷摩擦而产生的静电，从而消除了因静电引发的安全隐患。As shown in FIG1 , 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 friction between the polyester tire cloth and the sealing soft brush, thereby eliminating the potential safety hazards caused by static electricity.
在本发明中，所述进料口、出料口、密封软刷和聚酯胎布的宽度优选相同。本发明将进料口、出料口、密封软刷和聚酯胎布设置为相同宽度，能够进一步提高装置的密封性。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, which can further improve the sealing performance of the device.
如图1所示，在本发明的一个实施例中，所述壳体1的内壁上还设置有转动辊轴5，所述转动辊轴5垂直于沥青烟气的流动方向；所述转动辊轴5平行于进料口A的宽度方向。本发明对所述转动辊轴的材质和直径没有特殊的限定，根据常识进行选择即可。本发明转动辊轴为从动辊轴，不需要额外动力。As shown in FIG1 , 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.
在本发明的一个实施例中，所述转动辊轴5的数目为4个，各转动辊轴之间平行设置且不在同一垂直方向。本发明对所述各转动辊轴的垂直高度没有特殊的限定，根据需要进行调整即可。本发明对所述各转动辊轴的间距没有特殊的限定，根据常识进行判断即可。本发明设置4个转动辊轴时，中间两个起到承托作用，边上两个(进料口、出料口)起到转向作用。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 limitation on the vertical height of the rotating rollers, and they can be adjusted as needed. The present invention has no special limitation on the spacing of the rotating rollers, and it 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.
如图1所示，在本发明的一个实施例中，所述转动辊轴5的数目为13个；所述辊轴辊轴5中的2个转动辊轴分别设置于进料口A一侧和出料口B一侧，剩余转动辊轴设置为三行；所述三行不在同一水平面；所述三行中最下边一行的转动辊轴和中间一行的转动辊轴的数目各为4个。本发明对所述各转动辊轴的间距没有特殊的限定，根据常识进行判断即可。本发明将转动辊轴设置为三行能够对沥青烟气进行多次吸附。本发明通过设置转动辊轴的排列方式以及数据能够调节聚酯胎布的吸附次数及走向；转动辊轴的个数及分布根据对沥青烟气的净化需求进行布置。As shown in FIG1 , 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 fume multiple times. The present invention can adjust the number and direction of adsorption of the 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 the asphalt fume.
本发明提供的吸附装置能够进一步提高沥青烟气的净化效果。The adsorption device provided by the present invention can further improve the purification effect of asphalt fume.
在本发明中，所述沥青烟气采用聚酯胎布进行吸附时优选包括：将沥青烟气由进风口输入壳体，聚酯胎布由进料口输入壳体，所述聚酯胎布的布面垂直于沥青烟气的流动方向，进行吸附，得到的前处理的沥青烟气由出风口输出壳体，吸附后的聚酯胎布由出料口输出壳体；所述聚酯胎布的进料速度优选为30～40m/min。本发明通过控制聚酯胎布的进料速度能够进一步提高沥青烟气的净化效果。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.
在本发明中，所述聚酯胎布的宽度优选与进料口宽度相同。In the present invention, the width of the polyester tire cloth is preferably the same as the width of the feed port.
得到前处理的沥青烟气后，本发明将所述前处理的沥青烟气依次进行静电捕集和光催化氧化，得到净化的烟气。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.
在本发明中，所述静电捕集的温度优选为10～100℃，更优选为40～60℃；所述静电捕集的运行电压优选为30～80kV，更优选为50～60kV。本发明对所述静电捕集的时间没有特殊的限定，采用本领域技术人员熟知的操作即可。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.
在本发明中，所述静电捕集采用的静电捕集器优选为干式静电捕集器或湿式静电捕集器，更优选为湿式静电捕集器。本发明对所述静电捕集器的型号没有特殊的限定，采用本领域技术人员熟知的仪器设备即可。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 equipment well known to those skilled in the art can be used.
在本发明的一个实施例中，所述静电捕集器的运行电压优选为60kV，有效电场面积优选为5.8m2，电晕极数优选为166根。In one embodiment of the present invention, the operating voltage of the electrostatic collector is preferably 60 kV, the effective electric field area is preferably 5.8 m 2 , and the number of corona poles is preferably 166.
在本发明中，所述静电捕集器优选通过管道与吸附装置连接。In the present invention, the electrostatic collector is preferably connected to the adsorption device through a pipeline.
在本发明中，所述光催化氧化采用的光催化氧化器中的光源优选为汞灯；所述光源的功率优选为10～300W；所述光催化氧化采用的催化剂优选为纳米二氧化钛和纳米氧化铁中的一种。本发明对所述光催化氧化器没有特殊的限定，采用本领域技术人员熟知的仪器即可。本发明对所述催化剂的来源没有特殊的限定，采用本领域技术人员熟知的市售产品即可。本发明对所述光催化氧化的具体工艺参数没有要求，根据常识进行选择即可。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.
在本发明中，所述光催化氧化器优选通过管道与静电捕集器连接；所述光催化氧化器优选通过管道和风机与烟囱连接。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.
在本发明中，所述沥青烟气自进风口进入壳体，经聚酯胎布一次或多次吸附后通过风机进入静电捕集装置，进一步通过静电捕集净化粉尘和沥青烟后进入光催化氧化装置氧化分解小分子异味物质，达标后气体经烟囱高空排放；通过采用聚酯胎布吸附、静电捕集进一步吸附净化、光催化氧化降解异味物质技术的整合，将绝大多数沥青烟气中的粉尘粒子和沥青烟固化在成品卷材中，实现了防水卷材生产中沥青烟气的低成本高效绿色化处理，没有二次污染；其中，沥青烟气吸附技术可有效吸附沥青烟气中几乎全部的粉尘和绝大部分沥青烟，有利于后续处理工艺的实施，相比传统的吸收法和吸附法，其能够将污染物固化在防水卷材产品中，将吸附有污染物的聚酯胎布作为沥青防水卷材的原料，因此，不存在污染物的转移，无二次污染，是一种绿色处理技术；并且，采用聚酯胎布吸附的处理成本仅为燃烧法的1/100～1/200，并且不需要天然气等易燃易爆燃料，大大降低了安全风险。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 beneficial 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.
本发明通过聚酯胎布吸附和静电捕集、光催化氧化技术耦合的集成工艺，既解决了沥青烟气污堵处理设备的难题，又达到了低成本达标排放的目的。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.
本发明以生产基材作为沥青烟吸附材料，污染物沥青烟气被固化在产品中，避免了二次污染，并使污染物资源化利用；以生产基材吸附沥青烟，吸附次数可根据需要进行灵活调整，吸附效率高。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.
本发明沥青烟气的处理方法的工艺流程图如图2所示。从图2可以看出，沥青烟气可以来源于沥青氧化、胎布浸油工段、覆膜工段和其他排放收集；将沥青烟气进行聚酯胎布吸附、静电捕集以及光催化氧化后能够高空排放。The process flow chart of the asphalt fume treatment method of the present invention is shown in Figure 2. As can be seen from Figure 2, the asphalt fume can be derived from asphalt oxidation, tire cloth oil soaking section, film coating section and other emission collection; the asphalt fume can be discharged into the air after being adsorbed by polyester tire cloth, electrostatically captured and photocatalytically oxidized.
下面将结合本发明中的实施例，对本发明中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。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.
实施例1Example 1
本实施例的吸附装置包括壳体1；The adsorption device of this embodiment includes a housing 1;
所述壳体1的横截面为六边形；The cross section of the housing 1 is hexagonal;
所述壳体的材质为马口铁；The shell is made of tinplate;
所述壳体1顶部设置有出风口II，所述壳体1的底部设置有进风口I；所述进风口I和出风口II位于同一垂直方向；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;
所述进风口I和出风口II的宽度相同；The air inlet I and the air outlet II have the same width;
所述进风口和出风口的垂直距离为300cm；The vertical distance between the air inlet and the air outlet is 300 cm;
所述进风口I和出风口II分别与风道连接；The air inlet I and the air outlet II are respectively connected to the air duct;
所述进风口I相连的管道设置有阻爆器2；The pipeline connected to the air inlet 1 is provided with an explosion arrester 2;
所述壳体1的两侧分别设置有进料口A和出料口B；所述进料口A和出料口B设有密封软刷3；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;
所述进料口A和出料口B的高度相同，均为10cm，宽度均为100cm；The feed port A and the discharge port B have the same height, both 10 cm, and the width is 100 cm;
所述进料口A和出料口B连接有静电消除器4；The feed port A and the discharge port B are connected to a static eliminator 4;
所述进料口、出料口、密封软刷的宽度相同；The widths of the feed port, the discharge port and the sealing soft brush are the same;
所述壳体1的内壁上还设置有转动辊轴5，转动辊轴5垂直于沥青烟气的流动方向；所述转动辊轴5平行于进料口A的宽度方向；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;
所述转动辊轴5的数目为4个，各转动辊轴之间平行设置且不在同一垂直方向；4个转动辊轴时，中间两个起到承托作用，边上两个(进料口、出料口)起到转向作用；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;
沥青烟气的处理方法，为以下步骤：The method for treating asphalt fume is as follows:
(1)将流量为20000m3/h的沥青烟气(沥青烟气中颗粒物为212mg/m3，沥青烟为153mg/m3，非甲烷总烃为65.7mg/m3)经有组织收集后，通过调压风机将沥青烟气由进风口I输入壳体1，国际1型聚酯胎布由进料口A输入壳体1，所述聚酯胎布的布面垂直于沥青烟气的流动方向，进行吸附，得到的前处理的沥青烟气由出风口II输出壳体1，吸附后的聚酯胎布由出料口B输出壳体1，作为沥青防水卷材的原料；其中，聚酯胎布的进料速度为30m/min；聚酯胎布的宽度与进料口宽度相同；(1) Asphalt fume with a flow rate of 20000m3 /h (particulate matter in the asphalt fume is 212mg/ m3 , asphalt fume is 153mg/ m3 , and non-methane total hydrocarbons is 65.7mg/ m3 ) is collected in an organized manner, and the asphalt fume is input into the shell 1 through the air inlet I by a pressure regulating fan, and the international type 1 polyester tire cloth is input into the shell 1 through 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 through the air outlet II, and the polyester tire cloth after adsorption is output from the shell 1 through the discharge port B, as a raw material for asphalt waterproofing coiled material; wherein the feed 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;
(2)将所述步骤(1)得到的前处理的沥青烟气在湿式静电捕集器中进行静电捕集，然后进入光催化氧化器进行光催化氧化，得到净化的烟气；其中，湿式静电捕集器的运行电压为60kV，有效电场面积为5.8m2，电晕极数为166根；光催化氧化器中催化剂为TiO2(以泡沫镍为载体)，高压汞灯为400W，6支。(2) The pre-treated asphalt flue gas obtained in step (1) is electrostatically trapped 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, the effective electric field area is 5.8 m 2 , and the number of corona electrodes is 166; the catalyst in the photocatalytic oxidizer is TiO 2 (with nickel foam as a carrier), and the high-pressure mercury lamp is 400 W, and there are 6 lamps.
对实施例1中经聚酯胎布吸附得到的前处理的沥青烟气进行测量，沥青烟的吸附效率为68.6％，颗粒物的吸附效率为95.2％；对净化的烟气进行测量，烟气中颗粒物为8.6mg/m3，沥青烟为33.7mg/m3，非甲烷总烃为14.4mg/m3。The asphalt fume pre-treated by the polyester tire cloth in Example 1 was measured to have an adsorption efficiency of 68.6% for asphalt fume and 95.2% for particulate matter. The purified flue gas was measured to have 8.6 mg/m 3 particulate matter, 33.7 mg/m 3 asphalt fume and 14.4 mg/m 3 non-methane total hydrocarbons.
实施例2Example 2
图1为本发明实施例中吸附装置的截面结构示意图；FIG1 is a schematic diagram of the cross-sectional structure of an adsorption device according to an embodiment of the present invention;
图中，A为进料口，B为出料口，I为进风口，II为出风口，1为壳体，2为阻爆器，3为密封软刷，4为静电消除器，5为转动辊轴。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.
其与实施例1吸附装置的区别仅在于转动辊轴的数目，转动辊轴5的数目为13个；所述辊轴辊轴5中的2个转动辊轴分别设置于进料口A一侧和出料口B一侧，剩余转动辊轴设置为三行；所述三行不在同一水平面；所述三行中最下边一行的转动辊轴和中间一行的转动辊轴的数目各为4个；The difference between the adsorption device and the adsorption device of Example 1 is only the number of rotating rollers. The number of rotating rollers 5 is 13. Two 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.
沥青烟气的处理方法，为以下步骤：The method for treating asphalt fume is as follows:
(1)将流量为20000m3/h的沥青烟气(沥青烟气中颗粒物为207mg/m3，沥青烟为148mg/m3，非甲烷总烃为62.1mg/m3)经有组织收集后，通过调压风机将沥青烟气由进风口I输入壳体1，国际1型聚酯胎布由进料口A输入壳体1，所述聚酯胎布的布面垂直于沥青烟气的流动方向，进行吸附，得到的前处理的沥青烟气由出风口II输出壳体1，吸附后的聚酯胎布由出料口B输出壳体1，作为沥青防水卷材的原料；其中，聚酯胎布的进料速度为30m/min；聚酯胎布的宽度与进料口宽度相同；(1) Asphalt fume with a flow rate of 20000 m 3 /h (particulate matter in the asphalt fume is 207 mg/m 3 , asphalt fume is 148 mg/m 3 , and non-methane total hydrocarbons is 62.1 mg/m 3 ) is collected in an organized manner, and the asphalt fume is input into the shell 1 through the air inlet I by a pressure regulating fan, and the international type 1 polyester tire cloth is input into the shell 1 through 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 through the air outlet II, and the polyester tire cloth after adsorption is output from the shell 1 through the discharge port B, as a raw material for asphalt waterproofing coiled material; wherein the feed speed of the polyester tire cloth is 30 m/min; and the width of the polyester tire cloth is the same as the width of the feed port;
(2)将所述步骤(1)得到的前处理的沥青烟气在湿式静电捕集器中进行静电捕集，然后进入光催化氧化器进行光催化氧化，得到净化的烟气；其中，湿式静电捕集器的运行电压为60kV，有效电场面积为5.8m2，电晕极数为166根；光催化氧化器中催化剂为TiO2(以泡沫镍为载体)，高压汞灯为400W，6支。(2) The pre-treated asphalt flue gas obtained in step (1) is electrostatically trapped 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, the effective electric field area is 5.8 m 2 , and the number of corona electrodes is 166; the catalyst in the photocatalytic oxidizer is TiO 2 (with nickel foam as a carrier), and the high-pressure mercury lamp is 400 W, and there are 6 lamps.
对实施例2中经聚酯胎布吸附得到的前处理的沥青烟气进行测量，沥青烟的吸附效率为86.8％，颗粒物的吸附效率为97.6％；对净化的烟气进行测量，烟气中颗粒物为3.2mg/m3，沥青烟为12.1mg/m3，非甲烷总烃为8.5mg/m3。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 purified flue gas was measured to have 3.2 mg/m 3 particulate matter, 12.1 mg/m 3 asphalt fume and 8.5 mg/m 3 non-methane total hydrocarbons.
从以上实施例可以看出，本发明提供的处理方法能够对沥青烟气进行低成本高效绿色化处理，无二次污染。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.
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。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.
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