1、吸附工艺

1. Adsorption process

吸附法主要适用于低浓度气态污染物的净化，对于高浓度的有机气体，通常需要首先经过冷凝等工艺将浓度降低后再进行吸附净化。吸附技术是为经典和常用的气体净化技术，也是目前工业VOCs治理的主流技术之一。吸附法的关键技术是吸附剂、吸附设备和工艺、再生介质、后处理工艺等。

The adsorption method is mainly applicable to the purification of low concentration gaseous pollutants. For high concentration organic gases, it is usually necessary to first reduce the concentration through condensation and other processes before adsorption purification. Adsorption technology is a classic and commonly used gas purification technology, and is also one of the mainstream technologies for industrial VOCs treatment. The key technologies of adsorption method include adsorbent, adsorption equipment and process, regeneration medium, post-treatment process, etc.

活性炭因其具有大比表面积和微孔结构而广泛应用于吸附回收有机气体。目前，对活性炭吸附有机气体的研究主要集中在吸附平衡的预测、活性炭材料的改性及有机物的物化性质对活性炭吸附性能的影响。

Activated carbon is widely used for adsorption and recovery of organic gases due to its large specific surface area and microporous structure. At present, research on the adsorption of organic gases on activated carbon mainly focuses on predicting adsorption equilibrium, modifying activated carbon materials, and the impact of the physicochemical properties of organic matter on the adsorption performance of activated carbon.

各种材料吸附效果

Adsorption effect of various materials

2、冷凝工艺

2. Condensation process

油品在储运和销售过程中部分轻烃组分挥发进入大气，造成资源浪费和环境危害。同时有机溶剂广泛应用于工业生产中，每年都有大量的有机溶剂挥发到空气中，危害人类健康，造成严重的环境污染。采取合适的方法回收这些挥发性有机物不但可以降低企业生产成本，而且具有巨大的环保效益。

During the storage, transportation, and sales of oil products, some light hydrocarbon components evaporate into the atmosphere, causing resource waste and environmental harm. At the same time, organic solvents are widely used in industrial production. Every year, a large amount of organic solvents evaporate into the air, posing a threat to human health and causing serious environmental pollution. Adopting appropriate methods to recover these volatile organic compounds can not only reduce production costs for enterprises, but also have significant environmental benefits.

冷凝法是用来回收VOCs的一种有效方法，其基本原理是利用气态污染物在不同的温度和压力下具有不同饱和蒸汽压，通过降低温度和增加压力，使某些有机物凝结出来，使VOCs得以净化和回收。

The condensation method is an effective method for recovering VOCs. Its basic principle is to utilize gaseous pollutants with different saturation vapor pressures at different temperatures and pressures. By reducing temperature and increasing pressure, certain organic compounds are condensed out, enabling VOCs to be purified and recovered.

3、燃烧工艺

3. Combustion process

一类VOCs处理方法是所谓破坏性技术，即通过化学或生物的技术使VOCs转化为二氧化碳、水以及氯化氢等无毒或毒性小的无机物。燃烧法即属此类技术。

One type of VOCs treatment method is called destructive technology, which converts VOCs into non-toxic or less toxic inorganic substances such as carbon dioxide, water, and hydrogen chloride through chemical or biological techniques. The combustion method belongs to this type of technology.

燃烧法分直接燃烧法和催化燃烧法。直接燃烧法适合处理高浓度VOCs的废气，因其运行温度通常在800-1200℃时，工艺能耗成本较高，且燃烧尾气中容易出现二恶英、NOx等副产物；由于废气中VOCs浓度一般较低，仅仅依靠反应热，一般难以维持反应所需的温度。

The combustion method is divided into direct combustion method and catalytic combustion method. The direct combustion method is suitable for treating waste gas with high concentration of VOCs, as its operating temperature is usually between 800 and 1200 ℃, resulting in high process energy consumption costs and the easy occurrence of by-products such as dioxins and NOx in the combustion exhaust gas; Due to the generally low concentration of VOCs in the exhaust gas, it is generally difficult to maintain the required temperature for the reaction solely relying on the reaction heat.

为了提高热经济性，人们开展了大量的研究，一个方向是改进催化剂的性能使反应温度降低。另一个方向是研究新的工艺技术、新的反应器设计以使反应能在较高的温度下自热地实现。

In order to improve thermal economy, a large amount of research has been conducted, with one direction being to improve the performance of catalysts and reduce reaction temperatures. Another direction is to study new process technologies and reactor designs to enable the reaction to be self heated at higher temperatures.

喷漆废气的治理

Treatment of Spray Painting Waste Gas

目前对于喷漆废气的治理，一般采用前端过滤除去漆雾，然后再除去其中的易挥发性废气组份的三段组合净化方式。后续催化燃烧的净化效率在97%左右。而采用活性炭吸附法，可以控制活性炭层的厚度，保证活性炭吸附净化效率稳定在90%以上。

At present, for the treatment of paint exhaust gas, a three-stage combination purification method is generally adopted, which involves filtering the paint mist at the front end and then removing the volatile components of the exhaust gas. The purification efficiency of subsequent catalytic combustion is around 97%. By using the activated carbon adsorption method, the thickness of the activated carbon layer can be controlled to ensure a stable purification efficiency of over 90%.

以上就是VOCs废气处理相关知识，如果大家需要交流学习可点击我们的网站http://www.sdcjtz.com我们会有更多精彩内容等您查看.

The above is the knowledge related to VOCs waste gas treatment. If you need to exchange and learn, you can click on our website http://www.sdcjtz.com We will have more exciting content waiting for you to check out