What are the methods of butanone exhaust treatment

Butanone is an organic solvent and organic synthetic raw materials, widely used in coatings, paper, printing, textiles and synthetic rubber and other industries. The production process of these enterprises produced butanone exhaust gas need to be treated before discharge, not as good as will greatly break the surrounding environment, the following with the Everest blue editorial to understand what are the methods of butanone exhaust gas treatment.

Adsorption method of butanone waste gas treatment

Adsorbents such as activated carbon, silica gel and molecular sieve are used to adsorb the organic components in the waste gas with high efficiency, so that the butanone waste gas can be purified after passing through the adsorbent layer. Commonly used adsorption technology using the adsorption medium is activated carbon (rod or granular activated carbon). Organic waste gas management method adsorption method of high purification efficiency (followed by the saturation of the adsorbent, purification efficiency gradually reduced), high operating costs (replacement of the adsorbent of the cost is very high), the investment cost is low, to the environment to bring the secondary pollution of solid waste. At present, it is mainly used in the purification and treatment of low concentration organic waste gas with large air volume, low concentration (≤800mg/m3), no particles, no viscous material, and room temperature.

Butanone exhaust gas treatment condensation method

Reduce the temperature of the exhaust gas, so that the harmful substances condense, coalesce and separate from the exhaust gas to achieve the purpose of purification. This method has large investment and high energy consumption, and is not suitable for treating exhaust gas with large air volume.

Low temperature plasma method for butanone exhaust gas treatment

Using the medium to block the discharge process, the plasma inside the generation of particles rich in high chemical activity, such as electrons, ions, free radicals and excited state molecules, etc., the pollutants in the butanone exhaust gas and the reaction of these active groups with high energy, z finally converted into CO2 and H2O and other substances, so as to achieve the purpose of purifying the exhaust gas. Currently on the market a lot of low-temperature plasma nominal power exhaust gas, the actual ionisation of the air to produce ozone, the use of ozone's strong oxidative properties of exhaust gas treatment. Butanone waste gas management, organic waste gas management method low temperature plasma discharge effect and the humidity of the air has a great relationship, the greater the humidity the greater the energy consumption, a large amount of energy will be absorbed by the water molecules, thus reducing the ionisation effect. The use of low temperature plasma treatment of exhaust gas, exhaust gas directly through the discharge system, for flammable and explosive gases pose a great safety hazard, easily cause fires and other major safety accidents.

Butanone exhaust treatment combustion method

Combustion method only in the volatile organic compounds at high temperatures and sufficient air under the premise of complete combustion, decomposition into CO2 and H2O. combustion method for all types of organic waste gas, can be divided into direct combustion, thermal combustion and catalytic combustion.

Emission of exhaust gas concentration greater than 5000mg / m of high concentration of exhaust gas, generally use the direct combustion method, the method of VOCs exhaust gas as a fuel for combustion, combustion temperature is generally controlled at 1100 ℃.

Butanone waste gas management, organic waste gas management methods, thermal combustion method is suitable for the treatment of waste gas with a concentration of 1000-5000 mg/m, using thermal combustion method, the concentration of VOCs in the waste gas is lower, and it needs to be burned with the help of other fuels or auxiliary gases, the temperature required for thermal combustion is lower than that of direct combustion, which is about 540-820℃. Combustion method for VOCs exhaust gas treatment is highly efficient, but if VOCs exhaust gas contains elements such as S, N, etc., the exhaust gas generated after combustion is directly discharged, which will lead to secondary pollution.

Photocatalytic oxidation method for butanone waste gas treatment

Through the use of vacuum ultraviolet light in the UV band, i.e. the wavelength range of 170-184.9nm, it destroys the chemical bond of the organic waste gas molecules, causing them to split and form free atoms or groups; at the same time, through the splitting of oxygen in the mixed air, it forms free oxygen atoms and combines with natural ozone. The strong oxidising ozone (O3) reacts with the atoms of the organic waste gas molecules to form H2O and CO2, and the whole process takes less than 0.1 second, and the purification effect is related to the bonding energy of the waste gas molecules, the concentration of the waste gas, and the oxygen content. The entire purification process does not require the addition of any chemical additives or special restrictions.