(1)活性炭吸附法

(1) Activated carbon adsorption

有机废气中的吸附法主要适用于低浓度、高通量有机废气。现阶段，这种有机废气的处理方法已经相当成熟，能量消耗比较小，但是处理效率却非常高，而且可以净化有害有机废气。

The adsorption method in organic waste gas is mainly suitable for low concentration and high flux organic waste gas. At present, this kind of organic waste gas treatment method has been quite mature, energy consumption is relatively small, but the treatment efficiency is very high, and can purify harmful organic waste gas.

当碳吸附达到饱和度时，饱和碳床脱吸再生;当水蒸气加热到碳层时，蒸气被吹出，蒸汽混合物与水蒸气形成，碳吸附床分离在一起，蒸汽混合物与凝汽器冷却，蒸汽凝结成液体。因涂料中所用的“三苯”与水互不相溶，故可以直接回收。适用于低温、低湿、排气量大的场合，如油漆、印刷、粘合剂等。

When the carbon adsorption reaches saturation, the saturated carbon bed is desorbed and regenerated; when the steam is heated to the carbon layer, the steam is blown out, the steam mixture and the steam form, the carbon adsorption bed is separated, the steam mixture and the condenser are cooled, and the steam condenses into liquid. Because the "triphenyl" used in the coating is not miscible with water, it can be recovered directly. It is suitable for low temperature, low humidity and large exhaust volume, such as paint, printing, adhesive, etc.

(2)燃烧法

(2) Combustion method

燃烧包括直接燃烧和催化燃烧。它在国外更加成熟和广泛使用。适用于处理高浓度、小风量的挥发性有机物。它要求整个工艺具有高性和密封性。在处理大风量低浓度挥发性有机物时，需要相关的浓缩技术进行预处理。

Combustion includes direct combustion and catalytic combustion. It is more mature and widely used abroad. It is suitable for the treatment of volatile organic compounds with high concentration and small air volume. It requires high safety and sealing of the whole process. When dealing with VOCs with large air volume and low concentration, the relevant concentration technology is needed for pretreatment.

再生塑料颗粒废气采用的废气处理设备

Waste gas treatment equipment for waste gas of recycled plastic particles


再生塑料颗粒废气采用的废气处理设备

Waste gas treatment equipment for waste gas of recycled plastic particles

工作原理：高温燃烧是指在高温条件下燃烧废气中的有机化合物，以产生二氧化碳和水。而催化燃烧则是在其中燃烧时借助催化剂的作用，降低反应所需的温度，让废气再室温下即可燃烧生成二氧化碳和水。

Working principle: high temperature combustion refers to the combustion of organic compounds in the exhaust gas under high temperature conditions to produce carbon dioxide and water. Catalytic combustion is to reduce the temperature of reaction with the help of catalyst during combustion, so that the exhaust gas can be burned at room temperature to generate carbon dioxide and water.

(3)光氧催化法

(3) Photocatalytic oxidation

光催化氧化技术是利用特种紫外线波段，将废气分子破裂，打断其分子链，同时，通过分解空气中的水和氧，使其成为具有高活性的臭氧或自由羟基，从而氧化废气分子，生成水和二氧化碳。加入催化剂，可提高反应速率和处理废气的效率，从而达到净化废气的目的。

Photocatalytic oxidation technology is the use of special ultraviolet band, the exhaust gas molecules will break, break its molecular chain, at the same time, through the decomposition of water and oxygen in the air, make it become highly active ozone or free hydroxyl, so as to oxidize the exhaust gas molecules, generate water and carbon dioxide. The addition of catalyst can improve the reaction rate and the efficiency of waste gas treatment, so as to achieve the purpose of purifying waste gas.

(4)等离子催化法

(4) Plasma catalysis

等离子体催化法适用范围广，净化效率高，特别适用于其他方法难以处理的多个恶臭气体，如化学工业、医学等行业。但是一次性投资巨大，且有一定的隐患。

The plasma catalytic method has a wide range of applications and high purification efficiency. It is especially suitable for many malodorous gases that are difficult to be treated by other methods, such as chemical industry, medicine and other industries. But the one-time investment is huge, and there are some security risks.

有机废气经等离子体激发、解离、活化后，通过高能辐射与稀有金属氧化物表面废气中的氧气发生催化氧化反应，转化为二氧化碳、水等物质。

After being excited, dissociated and activated by plasma, the organic waste gas reacts with the oxygen in the waste gas on the surface of rare metal oxides through high-energy radiation to produce catalytic oxidation reaction, which is converted into carbon dioxide, water and other substances.

(5)UV光解法

(5) UV photolysis

在UV光解废气净化设备中添加纳米级别的活性材料，将活性材料给予紫外线照射，活性材料能够吸收大量的光能，于表面发生激励进而生成h+(空穴)与e-(电子)，而空穴与电子所具有的氧化还原能力，可与氧、水发生反应，迅速生成具有极强氧化能力的·OH(羟基自由基)与·O2-(阴氧离子)。·OH氧化电位相当高，可以氧化有机挥发性废气中的电子，促进无光吸收能力物质的氧化分解。研究发现，在紫外光的能量以及纳米活性催化氧化作用下，有机挥发性废气在短短2-3秒的时间内就能够被充分分解。

The nano active material is added to the UV photodegradation waste gas purification equipment to irradiate the active material. The active material can absorb a large amount of light energy and generate H + (hole) and E - (electron) on the surface. The redox ability of hole and electron can react with oxygen and water to rapidly generate · Oh (hydroxyl radical) with strong oxidation ability And · O2 - (anion). ·Oh oxidation potential is quite high, which can oxidize the electrons in volatile organic waste gas and promote the oxidative decomposition of non light absorbing substances. It is found that the VOCs can be fully decomposed in just 2-3 seconds under the action of UV energy and nano active catalytic oxidation.