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光氧催化燃烧比直接燃烧好在哪?

来源:http://www.eaglecash.net/   发布时间:2019-06-14 16:20:17
  催化燃烧是在挥发性有机化合物可燃性的基础上发展起来的一种燃烧模式。换句话说,工业排放的VOCS在催化剂的作用下充分燃烧,得到CO:和H20,从而达到更好的环保效果。与直接燃烧法相比,该方法具有较好的净化效果,且处理温度和时间均低于直接燃烧法。因此,与直接燃烧法相比,催化燃烧法实际上具有以下主要优点。
  Catalytic combustion is a combustion mode developed on the basis of the flammability of volatile organic compounds. In other words, VOCS emitted by industry burns fully under the action of catalyst to obtain CO: and H20, thus achieving better environmental protection effect. Compared with the direct combustion method, this method has better purification effect, and the treatment temperature and time are lower than the direct combustion method. Therefore, compared with direct combustion, catalytic combustion has the following main advantages.
  1. 净化率较高,可达98%以上,不会产生二次污染。
  1. The purification rate is high, which can reach over 98% without secondary pollution.
  2. 由于催化剂的存在,催化燃烧的点火温度非常低,通常在200 ~ 400℃,可以有效降低能源消耗,减少NOx的生成。
  2. Because of the existence of catalysts, the ignition temperature of catalytic combustion is very low, usually 200-400 C, which can effectively reduce energy consumption and reduce the formation of NOx.
  3.可加工组成复杂、浓度低的挥发性有机化合物。通常,低浓度的烃类、醇类和酮类化合物都可以通过催化燃烧来加工。
  3. Volatile organic compounds with complex composition and low concentration can be processed. Generally, low concentration hydrocarbons, alcohols and ketones can be processed by catalytic combustion.
  4、工艺简单,操作安全。
  4. The process is simple and the operation is safe.
  催化燃烧方法的技术核心在于催化剂的选择,催化剂的使用是不一样的,所以效果会有很大的不同。目前催化燃烧方法中使用的催化剂有三种:贵金属催化剂、复合氧化物催化剂和稀土元素催化剂。
  The technical core of catalytic combustion method lies in the choice of catalysts. The use of catalysts is different, so the effect will be very different. At present, there are three kinds of catalysts used in catalytic combustion: noble metal catalysts, complex oxide catalysts and rare earth element catalysts.
光氧催化设备
  紫外线photooxygen净化技术是使用一个特殊的高能紫外线紫外线光束照亮恶臭气体,开裂等恶臭气体氨、三甲胺、硫化氢、甲硫醚、二甲硫醚、甲硫醇、甲硫醚、二甲二硫、二硫化碳、苯乙烯,硫化H2S,挥发性有机化合物、苯、甲苯、二甲苯分子键。
  Ultraviolet photooxygen purification technology uses a special high-energy ultraviolet ray beam to illuminate the odor gas, such as ammonia, trimethylamine, hydrogen sulfide, methyl sulfide, dimethyl sulfide, methyl mercaptan, methyl sulfide, dimethyl disulfide, carbon disulfide, styrene, H2S, volatile organic compounds, benzene, toluene, xylene molecular bonds.
  高臭氧是用来分解空气中的氧分子,产生自由氧,即活性氧物种。由于自由氧所携带的正电子和负电子的不平衡,氧分子需要与氧分子结合产生臭氧,使处于自由状态的污染物与臭氧氧化结合形成小的无害或低危害的化合物。如CO2、H2O等。紫外线+ O2→O - + O *(活性氧)O + O2→O3(臭氧)。
  High ozone is used to decompose oxygen molecules in the air and produce free oxygen, i. e. reactive oxygen species. Owing to the imbalance of positron and negative electrons carried by free oxygen, oxygen molecules need to combine with oxygen molecules to produce ozone, so that pollutants in free state can combine with ozone oxidation to form small harmless or low hazard compounds. Such as CO 2, H 2, etc. Ultraviolet + O 2 O - + O* (reactive oxygen species) O + O 2 O 3 (ozone).
  采用一种特殊的催化剂进行氧化还原反应。利用高能紫外紫外线束、臭氧和催化剂协同分解氧化恶臭气体,使恶臭气体降解为低分子化合物、水和二氧化碳,达到除臭杀菌的目的。
  A special catalyst was used for redox reaction. High-energy ultraviolet (Ultraviolet) beam, ozone and catalyst were used to synergistically decompose and oxidize odorous gases. The odorous gases were degraded into low molecular compounds, water and carbon dioxide to achieve the purpose of deodorization and sterilization.
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