Organic waste gas treatment technology breakthrough, activated carbon is more commonly used

Organic waste gas treatment refers to the use of a variety of technical measures to reduce petroleum losses, reduce the amount of organic solvents, or purify exhaust gas in various ways to eliminate organic waste gas pollution. Organic waste gas pollution sources are widely distributed. In order to prevent pollution, in addition to reducing oil consumption and reducing the amount of organic solvents to reduce the generation and emission of organic waste gas, exhaust gasification is currently a practical and feasible way of treatment. Commonly used methods include adsorption, absorption, catalytic combustion, and thermal combustion.

The greenhouse effect and the increasing depletion of resources have caused a serious threat to the survival of mankind. Countries around the world have reached a consensus: humanity needs a rescue plan to avoid a climate crisis. At the same time, humanity has transformed resource-consuming economic development models into circular economy models. . *** New scientific research shows that volatile organic compounds such as isopropanol, alcohol, toluene, etc. are widely used in printing, tanning, iron cans, spray paint and adhesive tape, medicine, edible oil production, and electronic assembly industries Is one of the important causes of global greenhouse gases, and these substances contribute even more to atmospheric temperature rise than carbon dioxide.

China's organic waste gas treatment technology has made breakthrough progress

Almost all organic solvents are petroleum-derived products. The production and synthesis of organic solvents require energy and petroleum raw materials. As the price of oil rises, various organic solvents are bound to rise. Taking reasonable technical methods and means to recover organic solvents from organic waste gas and reuse them has become an important issue of concern to the international community.

For example, in the United States, the sales revenue of products related to organic waste gas treatment is about 4 billion US dollars, and it is increasing at an annual rate of 5%. However, China's key technologies and methods for effective recycling of organic waste gas have always been blank.

In China, the main reason why the solvent recovery industry is difficult to develop lies in the large investment in equipment and the high energy consumption of equipment operation. Investing in solvent recovery equipment will reduce corporate profits. Therefore, it is not enough to rely on the environmental protection consciousness and legal restrictions of enterprises to popularize solvent recycling. Guangzhou Black Horse Technology Co., Ltd. began to explore this field in a quiet situation in China.

Organic waste gas treatment method

Organic waste gas pollution sources are widely distributed. In order to prevent pollution, in addition to reducing oil loss and reducing the amount of organic solvents to reduce the generation and emission of organic waste gas, exhaust gas purification is currently a practical and feasible way of treatment. Commonly used methods include adsorption, absorption, catalytic combustion, and thermal combustion. When choosing a purification method, the county should choose a method with low cost, low energy consumption, and no secondary pollution according to the specific situation, try to achieve harm as much as possible, and fully recycle the components and waste heat. In most cases, the petrochemical industry adopts methods such as condensation, absorption, and direct combustion due to its high exhaust gas concentration; the paint construction and printing industries use adsorption, catalytic combustion, and other methods due to their low exhaust gas concentration.

When selecting a purification method, the county should choose a method with low cost, low energy consumption, and no secondary pollution according to the specific situation, try to achieve the benefit of harm, and fully recycle the components and waste heat. In most cases, the petrochemical industry adopts methods such as condensation, absorption, and direct combustion due to its high exhaust gas concentration; the paint construction and printing industries use adsorption, catalytic combustion, and other methods due to their low exhaust gas concentration.

Treatment method of activated carbon in organic waste gas

Activated carbon is currently the most widely used method for treating organic waste gas. It has good adsorption performance for benzene waste gas, but poor adsorption for hydrocarbon waste gas. The main disadvantage is that the operating cost is relatively high, and it is not suitable for environments with high humidity, but for the current market application, the use of activated carbon adsorption *** is commonly used. The most commonly used activated carbon is: activated carbon particles and activated carbon fibers. The price of activated carbon particles is cheaper, but the effect is less. In comparison, the price of activated carbon fibers is relatively higher and the effect is better.

Activated carbon is mainly used in chemical industry as chemical catalyst and carrier, gas purification, solvent recovery and decolorization and refining of grease and so on. At present, the market demand is about 10,000 tons or more, basically based on coal columnar activated carbon, wood high-end activated carbon accounts for about 10-15%, mainly caused by the price gap imbalance, with the importance of the national energy, coal resources Integration, the introduction of resource taxes, the cost of coal-based carbon is rising, and the use of wood-based columnar activated carbon using the “three residues” of forest products as raw materials has national policy support advantages. , Wooden columnar activated carbon will gradually replace coal-based activated carbon.