CN202983486U - Integration purification device for processing complex industrial organic waste gas - Google Patents
Integration purification device for processing complex industrial organic waste gas Download PDFInfo
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Abstract
Description
技术领域 technical field
本实用新型涉及处理复杂工业有机废气的设备，特别涉及一种处理复杂工业有机废气的一体化净化设备。The utility model relates to equipment for processing complex industrial organic waste gas, in particular to an integrated purification equipment for processing complex industrial organic waste gas.
背景技术 Background technique
有机废气包含挥发性有机物，如三苯废气等，和半挥发性有机物，如多环芳烃、多溴联苯醚等。有机废气中微量毒害有机污染物由于其浓度较低，难以在后续过程中充分接触和去除，因而使得一些控制技术花费较多且相对困难。气-固相光催化氧化技术对去除微量有机污染物存在一定的潜在优势。但是，在流量大的工业有机废气处理过程中，由于有机废气在光催化氧化装置中停留时间不够长，导致光催化剂不能有效地、一次性地氧化降解废气中的有机物。另外，随着光催化剂处理有机废气的时间延长，光催化剂的催化效率会随着处理负荷的增加而有所降低。更重要的是，复杂工业有机废气中含有的大量细颗粒物会随着运行时间的延长严重影响和遮蔽光催化剂，从而导致光催化净化的效率逐渐降低，从而大大减少光催化剂的寿命。因此，在实际复杂工业有机废气的处理过程中，利用单独的光催化氧化技术难以达到理想的污染控制效果。因此，将光催化氧化技术与其他处理有机废气的技术进行集成化研究是光催化技术应用于复杂工业有机废气污染控制的必然选择。Organic waste gas contains volatile organic compounds, such as triphenyl waste gas, etc., and semi-volatile organic compounds, such as polycyclic aromatic hydrocarbons, polybrominated diphenyl ethers, etc. Due to the low concentration of trace toxic organic pollutants in organic waste gas, it is difficult to fully contact and remove them in the subsequent process, which makes some control technologies more expensive and relatively difficult. Gas-solid phase photocatalytic oxidation technology has certain potential advantages in removing trace organic pollutants. However, during the treatment of industrial organic waste gas with a large flow rate, the photocatalyst cannot oxidize and degrade the organic matter in the waste gas effectively and at one time because the residence time of the organic waste gas in the photocatalytic oxidation device is not long enough. In addition, as the time for photocatalyst to treat organic waste gas increases, the catalytic efficiency of photocatalyst will decrease with the increase of processing load. More importantly, a large amount of fine particles contained in complex industrial organic waste gas will seriously affect and shade the photocatalyst with the prolongation of operation time, resulting in a gradual decrease in the efficiency of photocatalytic purification, thereby greatly reducing the life of the photocatalyst. Therefore, in the actual treatment process of complex industrial organic waste gas, it is difficult to achieve the ideal pollution control effect by using a single photocatalytic oxidation technology. Therefore, the integration research of photocatalytic oxidation technology and other technologies for treating organic waste gas is an inevitable choice for photocatalytic technology to be applied to the pollution control of complex industrial organic waste gas.
实用新型内容 Utility model content
本实用新型的目的在于克服现有技术的不足，提供一种处理复杂工业有机废气的一体化净化设备。The purpose of the utility model is to overcome the deficiencies of the prior art and provide an integrated purification equipment for processing complicated industrial organic waste gas.
本实用新型的目的通过下述技术方案实现：一种处理复杂工业有机废气的一体化净化设备，包括依次连接的用于收集气体的集气罩、反应箱体和用于抽出气体的风机；按照气体的走向，反应箱体内依次设置有静电除尘器、光催化反应装置、臭氧发生器和吸附床层；在光催化反应装置和吸附床层之间为臭氧发生区；吸附床层上设置有吸附剂；The purpose of this utility model is achieved through the following technical solutions: an integrated purification equipment for processing complex industrial organic waste gas, including a gas collecting hood for collecting gas, a reaction box and a fan for extracting gas connected in sequence; The direction of the gas, the reaction box is successively equipped with an electrostatic precipitator, a photocatalytic reaction device, an ozone generator and an adsorption bed; between the photocatalytic reaction device and the adsorption bed is an ozone generation area; the adsorption bed is provided with an adsorption agent;
所述的静电除尘器优选为高压静电除尘器；The electrostatic precipitator is preferably a high-voltage electrostatic precipitator;
所述的光催化反应装置包含用于激发光催化剂的紫外灯、光催化剂和流过式光催化固定床；紫外灯、光催化剂和流过式光催化固定床依次排布，光催化剂固定在流过式光催化固定床上；The photocatalytic reaction device comprises an ultraviolet lamp for exciting the photocatalyst, a photocatalyst and a flow-through photocatalytic fixed bed; the ultraviolet lamp, photocatalyst and the flow-through photocatalytic fixed bed are arranged in sequence, and the photocatalyst is fixed in Over-type photocatalytic fixed bed;
所述的紫外灯优选在紫外灯外设置用于保护紫外灯的玻璃套管；The ultraviolet lamp is preferably provided with a glass casing for protecting the ultraviolet lamp outside the ultraviolet lamp;
所述的光催化剂为负载在泡沫镍上的纳米TiO2光催化剂或者纳米ZnO-SnO2复合氧化物光催化剂；The photocatalyst is a nano- TiO2 photocatalyst or a nano-ZnO- SnO2 composite oxide photocatalyst loaded on nickel foam;
所述的吸附剂为商业化分子筛、碳纳米管、活性炭纤维和活性炭中的一种或者两种形成的混合物；The adsorbent is one or a mixture of commercial molecular sieves, carbon nanotubes, activated carbon fibers and activated carbon;
所述的设备应用于复杂工业有机废气的处理，特别适用于各种复杂工业有机废气排放车间有机废气的一体化处理。The device is applied to the treatment of complex industrial organic waste gas, and is especially suitable for the integrated treatment of organic waste gas from various complex industrial organic waste gas discharge workshops.
所述的处理复杂工业有机废气的一体化净化设备的应用，包括以下步骤：The application of the integrated purification equipment for processing complex industrial organic waste gas includes the following steps:
（1）静电除尘：通过集气罩收集有机废气，经静电除尘器将有机废气中粒径大于2.5μm的颗粒物去除，从而大大消除颗粒物对光催化剂的遮蔽作用，延长光催化剂的寿命；(1) Electrostatic dust removal: collect organic waste gas through a gas collection hood, and remove particles with a particle size greater than 2.5 μm in the organic waste gas through an electrostatic precipitator, thereby greatly eliminating the shielding effect of particles on the photocatalyst and prolonging the life of the photocatalyst;
（2）光催化氧化：除尘后的有机废气进入光催化反应装置，在光催化剂的作用下，有机废气中的大部分挥发性有机物分解为小分子有机物或矿化为CO2和H2O；(2) Photocatalytic oxidation: The organic waste gas after dust removal enters the photocatalytic reaction device, and under the action of photocatalyst, most of the volatile organic compounds in the organic waste gas are decomposed into small molecular organic compounds or mineralized into CO 2 and H 2 O;
（3）臭氧氧化吸附协同深度氧化：经光催化反应装置处理后的有机废气中残留的有机物首先被前一单元光催化技术产生的剩余臭氧和臭氧发生器产生的臭氧进行气相氧化，然后再一起吸附在活性吸附剂上，进而进一步发生臭氧氧化有机废气的气固相原位协同深度氧化降解，这样既保证了有机废气的安全深度达标排放，又完全消除了光催化技术产生的剩余臭氧排放对大气的二次污染问题；(3) Ozone oxidation adsorption synergistic deep oxidation: the residual organic matter in the organic waste gas treated by the photocatalytic reaction device is firstly oxidized in the gas phase by the remaining ozone generated by the photocatalytic technology of the previous unit and the ozone generated by the ozone generator, and then together Adsorbed on the active adsorbent, further in-situ gas-solid phase synergistic deep oxidation degradation of organic waste gas by ozone oxidation occurs, which not only ensures the safe deep discharge of organic waste gas, but also completely eliminates the impact of residual ozone emissions generated by photocatalytic technology Secondary pollution of the atmosphere;
本实用新型相对于现有技术，具有如下的优点和有益效果：本实用新型提供的设备组合紧凑、占地面积小，不但不会对环境造成二次污染，而且还可以有效地降低设备的设计和处理成本。本实用新型首先通过静电除尘器将有机废气中的悬浮颗粒物捕获，减小颗粒物对光催化反应装置中光催化剂的遮蔽和中毒作用；其次通过光催化剂将有机废气中的有机物降解成小分子，CO2和H2O；最后，再利用前一单元光催化技术产生的剩余臭氧和臭氧发生器产生的臭氧有机废气进一步氧化降解，反应后的剩余低浓度有机废气和臭氧一起吸附在吸附剂并利用吸附臭氧氧化性将有机废气进一步原位降解成无毒无害的CO2和H2O，既可以保证有机废气完全去除的处理效果，又可以完全消除光催化技术产生的剩余臭氧排放对大气的二次污染；根据测试结果表明，采用该设备对电子垃圾拆解车间有机废气的总处理效率达90%以上，总悬浮颗粒物的去除率90%以上。Compared with the prior art, the utility model has the following advantages and beneficial effects: the equipment provided by the utility model has a compact combination and a small footprint, not only does not cause secondary pollution to the environment, but also can effectively reduce the design of the equipment. and processing costs. The utility model first captures the suspended particles in the organic waste gas through the electrostatic precipitator to reduce the shielding and poisoning effect of the particles on the photocatalyst in the photocatalytic reaction device; secondly, the photocatalyst degrades the organic matter in the organic waste gas into small molecules, CO 2 and H 2 O; finally, the residual ozone produced by the previous unit photocatalytic technology and the ozone organic waste gas produced by the ozone generator are further oxidized and degraded, and the remaining low-concentration organic waste gas and ozone after the reaction are adsorbed on the adsorbent together and utilized The adsorption of ozone can further degrade organic waste gas into non-toxic and harmless CO 2 and H 2 O in situ, which can not only ensure the treatment effect of complete removal of organic waste gas, but also completely eliminate the impact of residual ozone emissions produced by photocatalytic technology on the atmosphere. Secondary pollution: According to the test results, the total treatment efficiency of the organic waste gas in the electronic waste dismantling workshop is over 90%, and the removal rate of the total suspended particles is over 90%.
附图说明 Description of drawings
图1为实施例1提供的设备的结构示意图；其中，1-集气罩、2-阀门、3-采样口、4-静电除尘器、5-采样口、6-光催化反应装置、7-流过式光催化固定床、8-采样口、9-紫外灯、10-臭氧发生器、11-吸附床层、12-风机、13-采样口；
具体实施方式 Detailed ways
下面结合实施例及附图对本实用新型作进一步详细的描述，但本实用新型的实施方式不限于此。The utility model will be further described in detail below in conjunction with the embodiments and accompanying drawings, but the implementation of the utility model is not limited thereto.
实施例1Example 1
一种处理复杂工业有机废气的一体化净化设备，如图1所示，包括依次连接的用于收集气体的集气罩1、反应箱体和用于抽出气体的风机12；反应箱体内设置有静电除尘器4、光催化反应装置6、臭氧发生器10和吸附床层11；按照气体的走向，反应箱体的气体入口、静电除尘器4、光催化反应装置6、臭氧发生器10、吸附床层11和反应箱体的气体出口依次排布；臭氧发生器10和吸附床层11之间为臭氧氧化区，吸附床层11上设置有吸附剂。集气罩1与反应箱体的气体入口通过管道连接，在管道上设置用于控制气体流量的阀门2；反应箱体的气体出口与用于抽出气体的风机12连接。反应箱体中静电除尘器4、光催化反应装置6、臭氧发生器10和吸附床层11采用无器壁接合，从而保证气体能完全经过静电除尘器4、光催化反应装置6、臭氧发生器10和吸附床层11，反应箱体采用无墙体衔接，不仅大大降低了一体化设备的风阻，而且降低了一体化净化设备的设计和处理成本。An integrated purification device for processing complex industrial organic waste gas, as shown in Figure 1, includes a gas collection hood 1 for collecting gas, a reaction box and a
光催化反应装置6包含用于激发光催化剂的紫外灯9、光催化剂和流过式光催化固定床7；紫外灯9、光催化剂和流过式光催化固定床7依次排布，光催化剂固定在流过式光催化固定床7上。其中，流过式光催化固定床7为3层，固定床大小为1000×1000mm，光催化剂为负载在泡沫镍上的纳米TiO2光催化剂或者纳米ZnO-SnO2复合氧化物光催化剂。The
为了便于进行分析，设置采样口。采样口3设置于阀门2和反应箱体的气体入口之间，采样口5设置于静电除尘器4和光催化反应装置6之间，采样口8设置于光催化反应装置6和吸附床层11之间，采样口13即为风机12的出气口。In order to facilitate analysis, a sampling port is provided. The sampling port 3 is arranged between the valve 2 and the gas inlet of the reaction box, the sampling port 5 is arranged between the
实施例2Example 2
使用实施例1提供的设备，其中，光催化剂为负载在泡沫镍上的纳米商业TiO2光催化剂。The equipment provided in Example 1 was used, wherein the photocatalyst was a nano-commercial TiO2 photocatalyst loaded on nickel foam.
（1）静电除尘：通过集气罩1收集有机废气（苯系物有机废气），有机废气通过静电除尘器4的处理，去除有机废气中的总悬浮颗粒物。(1) Electrostatic precipitator: collect organic waste gas (benzene series organic waste gas) through the gas collection hood 1, and the organic waste gas is treated by the
（2）光催化氧化：除尘后的有机废气通过风机12调节进入光催化反应装置6；有机废气被波长为254nm的紫外线激活的TiO2光催化剂催化氧化。(2) Photocatalytic oxidation: The organic waste gas after dedusting is regulated by the
（3）臭氧氧化吸附协同深度氧化：经光催化反应装置6处理后的有机废气进一步与光催化产生的臭氧及其臭氧发生器10（产生量为10g/h）产生的臭氧进行气相臭氧氧化，然后再将剩余的有机废气和臭氧一起通过吸附剂协同吸附浓缩进而原位发生气固相臭氧氧化.即同时利用前一单元光催化装置6产生的剩余臭氧和臭氧发生器10（产生量为10g/h）产生的臭氧先在气相氧化部分有机污染物，然后再将混合气体（包括臭氧和有机废气）一起吸附到吸附床层11上的活性炭吸附剂后再利用臭氧氧化性将所吸附的有机废气进行进一步原位在线氧化降解。(3) Ozone oxidation adsorption synergistic deep oxidation: the organic waste gas treated by the
试验进行中分别于采样口3和采样口13定期采集废气样品，进行分析以测定一体化净化设备对有机废气的处理效果。有机废气降解的研究结果表明，本实用新型提供的设备对总苯系物的去除效率一直稳定在90～91%，总悬浮颗粒物的去除率90～92%。During the test, waste gas samples were collected regularly at sampling port 3 and
实施例3Example 3
本实施例所用的设备与实施例2所的设备区别仅在于本实施例的光催化剂为负载在泡沫镍上的纳米ZnO-SnO2复合氧化物光催化剂（发明专利：ZL 03126662.2），吸附剂为SBA-15分子筛，臭氧产生量为15g/h。有机废气降解的研究结果表明，一体化净化设备对总苯系物的去除效率一直稳定在90～91%左右，总悬浮颗粒物的去除率90～92%。The difference between the equipment used in this example and the equipment used in Example 2 is that the photocatalyst in this example is a nano-ZnO-SnO 2 composite oxide photocatalyst supported on nickel foam (invention patent: ZL 03126662.2), and the adsorbent is SBA-15 molecular sieve, ozone production is 15g/h. The research results of organic waste gas degradation show that the removal efficiency of the integrated purification equipment for total benzene series has been stable at about 90-91%, and the removal rate of total suspended particulate matter is 90-92%.
实施例4Example 4
本实施例所用的设备与实施例2所用的设备的区别仅在于吸附剂为SBA-15分子筛与活性炭的混合物（质量比为1:1），臭氧产生量为1g/h。有机废气降解的研究结果表明，一体化净化设备对总苯系物的去除效率一直稳定在90～91%，总悬浮颗粒物的去除率90～92%。The difference between the equipment used in this example and the equipment used in Example 2 is that the adsorbent is a mixture of SBA-15 molecular sieve and activated carbon (mass ratio is 1:1), and the ozone generation is 1g/h. The research results of organic waste gas degradation show that the removal efficiency of the integrated purification equipment for total benzene series has been stable at 90-91%, and the removal rate of total suspended particles is 90-92%.
对比例1Comparative example 1
所用的设备与实施例2所用的设备的区别仅在于：没有臭氧发生器。有机废气降解的研究结果表明，该设备对总苯系物的去除效率比实施例2低，一直稳定在86～88%，总悬浮颗粒物的去除率90～92%。The difference between the equipment used and the equipment used in Example 2 is only that there is no ozone generator. The research results of the degradation of organic waste gas show that the removal efficiency of the equipment for total benzene series is lower than that of Example 2, which has been stable at 86-88%, and the removal rate of total suspended particles is 90-92%.
可见本实用新型提供的设备不仅设计紧凑，占地面积小，而且，能有效提高有机废气的解决效率。It can be seen that the equipment provided by the utility model is not only compact in design and occupies a small area, but also can effectively improve the treatment efficiency of organic waste gas.
上述实施例为本实用新型较佳的实施方式，但本实用新型的实施方式并不受上述实施例的限制，其他的任何未背离本实用新型的精神实质与原理下所作的改变、修饰、替代、组合、简化，均应为等效的置换方式，都包含在本实用新型的保护范围之内。The above-mentioned embodiment is a preferred implementation mode of the present utility model, but the implementation mode of the present utility model is not limited by the above-mentioned embodiment, and any other changes, modifications and substitutions made without departing from the spirit and principle of the present utility model , combination, and simplification, all should be equivalent replacement methods, and are all included in the protection scope of the present utility model.
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| CN102941005A (en) * | 2012-11-20 | 2013-02-27 | 中国科学院广州地球化学研究所 | Integrated physical chemistry purification method for treating complex industry organic waste gas, device and application |
| CN103316586A (en) * | 2013-07-07 | 2013-09-25 | 合肥工业大学 | Device and method for purifying organic pollutants in gases |
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| CN109529502A (en) * | 2018-11-02 | 2019-03-29 | 韩燕� | A kind of plastics granulation emission-control equipment |
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