当前位置:返回首页 > 新闻资讯 > 行业资讯 >
新闻中心
电话:13605413887(苏经理)
邮箱:1120779656@qq.com
联系人:苏经理
手机:13181713577(王经理)
网址:http://www.jngdhb.com
地址:济南市章丘区刁镇工业开发区

光氧催化设备燃烧治理的方法有哪些?

来源:http://www.jngdhb.com/   发布时间:2018-12-14 15:53:18
1、直接焚烧技能
1. Direct Incineration Skills
直接焚烧技能依据热量的收回方式,可分为直接焚烧法和蓄热焚烧法。直接焚烧法行将有机废气加热到必定温度下(800℃左右),使其彻底氧 化分 解,生成COz和H2O 等。蓄热焚烧法行将焚烧尾气中的热量积蓄,用于加热待处理废气,节能作用显着,此方法的去除功率可达99%以上,但焚烧不彻底时容易发生氮氧 化物,构成二次污染,该法适用于汽车、家电等烤漆职业高温文高浓度的有机废气管理。
According to the way of heat recovery, direct incineration can be divided into direct incineration and regenerative incineration. Direct incineration method can heat the organic waste gas to a certain temperature (about 800 C), make it thoroughly oxidized and decomposed to produce COz and H2O, etc. The regenerative incineration method will store the heat in the tail gas of incineration and use it to heat the waste gas to be treated. The energy saving effect is remarkable. The removal power of this method can reach over 99%. However, when the incineration is not complete, nitrogen oxides easily occur, which constitutes secondary pollution. This method is suitable for the management of high-temperature and high-concentration organic waste gas in automobile and household appliances industries.
2、催化焚烧技能
2. Catalytic Incineration Skills
催化焚烧技能经过在焚烧体系中添加催化剂,使可燃性的VOC在催化剂表面发作非均相氧 化反响,于300一500℃左右将VOC催化氧 化分 解为COz和HzO等。催化焚烧较热力焚烧温度低,可以显著下降设备运转费用,但当废气中含有可以引起催化剂中毒的硫、卤素有机化合物时,不宜选用催化焚烧法。
Catalytic incineration technology, by adding catalysts in the incineration system, makes the combustible VOC react heterogeneously on the surface of the catalyst, and decomposes VOC into COz and Hz O at about 300-500 C. Catalytic incineration has lower temperature than thermal incineration, which can significantly reduce the cost of equipment operation. However, when the exhaust gas contains sulfur and halogen organic compounds which can cause catalyst poisoning, catalytic incineration method should not be used.
光催化降解技能
Photocatalytic Degradation Skills
光催化降解技能在特定电磁波的紫外光照射下,发生氧 化力极强的自由基。当空气旋流进入滤网,即进入光催化反响腔时,自由基与有机蒸发气体直接进行化学反响,将其氧 化、分 解为CO2和H2O等。
Photocatalytic degradation technology produces radicals with strong oxidizing power under the ultraviolet irradiation of specific electromagnetic waves. When air swirls into the filter, i.e. into the photocatalytic reaction chamber, free radicals react directly with organic vapor gas, oxidizing and decomposing it into CO2 and H2O.
光催化的净化速率取决于所使用的催化剂和光源的功能,现在使用的催化剂首要为TiO2光催化剂。紫外光光源对VOC的净化作用较佳,如185,254,365nm波长的紫外光,尤其在苯系物的净化中,短波紫外光(如185,254nm)更具优胜。理论上,光催化氧 化进程可以将污染物彻底降解为COz和H2O等无毒物质,但反响速率慢、光子功率低一级缺点制约了其在实践中的应用。在对多组分VOC废气进行降解时,不彻底的反响会发生醛、酮、酸和酷等中间产品,构成二次污染。
The purification rate of photocatalysis depends on the function of catalyst and light source. The main catalyst used now is titanium dioxide photocatalyst. Ultraviolet light source has better purification effect on VOC, such as 185, 254, 365 nm wavelength ultraviolet light, especially in benzene series purification, short-wave ultraviolet light (such as 185, 254 nm) is more superior. In theory, the photocatalytic oxidation process can completely degrade pollutants into non-toxic substances such as COz and hydrogen peroxide, but its application in practice is restricted by its slow reaction rate and low photon power. When the multi-component VOC waste gas is degraded, some intermediate products such as aldehydes, ketones, acids and cools will occur, which will constitute secondary pollution.
光氧催化设备
生物降解技能
Biodegradable skills
生物降解技能行将含VOC的废气经传质进程(气液接触表面或生物膜)进入微生物悬液或生物膜中,在好氧条件下使用高效降解菌种将废气中的VOC降解为COz和H2O 等。
Biodegradable technology involves putting VOC-containing waste gas into microbial suspension or biofilm through mass transfer process (gas-liquid contact surface or biofilm). Under aerobic conditions, VOC in waste gas can be degraded to COz and H2O using highly efficient degradation bacteria.
生物法净化VOC废气的关键在于微生物的驯化及高效降解菌的培养。现在研究出的生物菌种对有机物的消化具有很强的专一性,只能处理包括醇类、醛类、酮类、酉旨类、单环芳烃以及氨和硫化氢等单组分且易生物降解的有机化合物,其对单一VOC去除能力的巨细次序为:醇、醛、酮等含氧烃类、BTEX等单环芳香烃、卤代烃,对单组分单环芳烃去除能力的巨细次序为:甲 苯、苯、乙苯或二甲 苯、氯苯或二氯苯。在处理混合组分的VOC时,因为各组分间存在的竞赛和抑制作用会出现降解轻视现象,因此,生物法管理有机废气的普适性较差。
The key to purifying VOC waste gas by biological method is the domestication of microorganisms and the cultivation of highly degrading bacteria. At present, the bio-bacteria studied have strong specificity for the digestion of organic matter. They can only deal with single-component and easily biodegradable organic compounds, including alcohols, aldehydes, ketones, monocyclic aromatic hydrocarbons, ammonia and hydrogen sulfide. Their removal capacity for single VOC is in the order of alcohols, aldehydes, ketones, monocyclic aromatic hydrocarbons, halogenated hydrocarbons such as BTEX, and for single component. The order of removal capacity of monocyclic aromatic hydrocarbons is toluene, benzene, ethylbenzene or xylene, chlorobenzene or dichlorobenzene. When dealing with VOC of mixed components, because of the competition and inhibition between components, degradation is neglected, so the universality of bio-management of organic waste gas is poor.
等离子技能
Plasma skills
等离子技能经过陡峭、脉冲窄的高压电晕在常温下发生大量的高能电子或高能电子激起发生O和.OH等活性粒子,各种活性粒子与VOC发作化学反响,破坏其分子中的C-C,C=C或C-H等化学键,使碳氢化合物氧 化分 解成CO2和H2O。
The plasma technology can produce a large number of high-energy electrons or high-energy electrons at room temperature through a steep, narrow pulse high-voltage corona, which triggers the occurrence of active particles such as O and. OH. Various active particles react chemically with VOC, destroying the chemical bonds such as C-C, C=C or C-H in their molecules, so that hydrocarbons can be oxidized and decomposed into CO2 and H2O.
低温等离子技能管理混合有机废气时,因为分子量不同,将不同化学键翻开需要的能量不同。当功率较低时,放电所发生的活性粒子能量不足,一些大分子物质仅仅被击碎,构成一些小分子化合物,并没有被彻底氧 化,其对有机化合物的净化功率较低。现在低温等离子技能对混合有机废气进行管理时的作用机制研究不行充分,首要应用于除臭、除异味等废气浓度很低的场合。
Low-temperature plasma technology manages mixtures of organic waste gases because different molecular weights require different energies to open different chemical bonds. When the discharge power is low, the energy of active particles is insufficient. Some macromolecular substances are only smashed to form some small molecular compounds, which are not completely oxidized, and the purification power of organic compounds is low. At present, the mechanism of low-temperature plasma technology in the management of mixed organic waste gas is not fully studied. It is mainly used in the occasion of low concentration of waste gas such as deodorization and odor removal.
有了上面的小总结,希望对广大客户有所帮助,如果有什么不理解的或者寻求帮助的请点击我们的官方网站:光氧催化设备http://www.jngdhb.com或者来电咨询,我们会尽全力为您解决
With the above summary, I hope it will be helpful to our customers. If you don't understand or ask for help, please click on our official website: photocatalytic equipment http://www.jngdhb.com or telephone consultation, we will try our best to solve it for you.
相关标签: 光氧催化设备、
  • 关于光氧催化设备的使用优势 光氧催化设备 1、高效除臭:能有效去除挥发性有机化合物、无机物、...
  • 为什么说现在光氧催化设... 近些年我国废气处理设备推广的很快,而废气处理设备应用最广泛就是U...
  • UV净化设备为社会发展带... UV净化设备采用化学方法处理的有机物质,包括烷烃、芳香烃、烯烃、...
  • 光氧催化设备为社会的发... 光氧催化设备采用化学方法处理的有机物质,用于生物气味和细菌的消...