What are the types of industrial waste gas treatment equipment?-Instrument Network

There are many types of industrial waste gas treatment equipment, and the following are some common types:

Activated carbon adsorption equipmentUtilizing the porosity and high adsorption performance of activated carbon to adsorb organic substances in exhaust gas. Suitable for processing organic waste gases with low concentration and high air volume, such as benzene, toluene, xylene, etc. The advantage is that it is easy to operate and maintain, but the disadvantage is that it requires regular replacement of activated carbon, resulting in higher operating costs.
Molecular sieve adsorption equipmentMolecular sieves have uniform pore size and good adsorption selectivity, and can adsorb organic substances in exhaust gases. Suitable for processing low concentration, high air volume organic waste gas, especially with good adsorption effect on some polar molecules and macromolecular organic compounds.

Catalytic combustion equipmentUnder the action of a catalyst, harmful substances in the exhaust gas undergo oxidation reactions at lower temperatures, converting into harmless carbon dioxide and water. Suitable for treating high concentration and low air volume organic waste gases, such as those from industries such as coatings and chemicals. The advantages are high processing efficiency, low energy consumption, and no secondary pollution. The disadvantages are high equipment investment and sensitivity to toxic substances in the catalyst in the exhaust gas.

Biological filterFill the filter with biological fillers, and when the exhaust gas passes through the filter, the pollutants in it are adsorbed, absorbed, and degraded by microorganisms. Suitable for treating low concentration, high air volume organic waste gas and odorous gases, such as waste gas generated by sewage treatment plants, garbage disposal sites, etc. The advantages are low operating costs and environmental friendliness, while the disadvantages are high requirements for temperature and humidity, and long start-up time.
Biological drip filtration towerWhen the filler containing microorganisms is soaked in nutrient solution, pollutants are absorbed and degraded by microorganisms when the exhaust gas passes through the filler layer. Suitable for treating low to medium concentration organic waste gas and odorous gases, it has the advantages of good treatment effect and stable operation.

UV photolysis waste gas treatment equipmentUsing high-energy UV beams to decompose pollutants in exhaust gas into low molecular weight compounds, water, and carbon dioxide. Suitable for processing organic waste gas and odorous gases with low concentration and high air volume, such as waste gas generated in industries such as printing and food processing. The advantages are high processing efficiency and compact equipment, but the disadvantage is weak treatment effect on high concentration exhaust gas.
Photocatalytic oxidation equipmentUnder the irradiation of UV light, strong oxidizing hydroxyl radicals are generated using photocatalysts to oxidize and decompose harmful substances in exhaust gas. Suitable for treating organic waste gases with low concentration and high air volume, it has the advantages of high treatment efficiency, low energy consumption, and no secondary pollution, but the equipment cost is relatively high.

Thermal oxidation incineration equipment (RTO)Using high temperature to oxidize and decompose organic waste gas into carbon dioxide and water. Suitable for processing organic waste gases with high air volume and medium to high concentration, such as those from industries such as automobile manufacturing and chemical engineering. The advantages are high processing efficiency, good heat recovery effect, and can reduce operating costs. The disadvantages are high investment costs and high operating energy consumption.
Direct incineration equipmentDirectly introducing exhaust gas into the incinerator, oxidizing and burning it at high temperatures to decompose harmful substances in the exhaust gas. Suitable for treating high concentration and low air volume organic waste gases, such as those generated in industries such as chemical and painting. The advantages are clean processing and high efficiency, while the disadvantages are high equipment investment and operating costs, as well as high energy consumption.

Spray tower (washing tower)Absorb and dissolve soluble pollutants in exhaust gas through liquid spraying. Suitable for treating acidic and alkaline waste gas, particulate matter containing waste gas, etc., such as waste gas generated in chemical, metallurgical and other industries. The advantage is that the equipment structure is simple and the investment cost is low. The disadvantage is that the liquid is prone to secondary pollution and needs to be replaced regularly.
Wet electrostatic precipitator equipmentCharge the dust particles in the exhaust gas through the action of an electric field, and then capture and remove them in a wet environment. Suitable for treating exhaust gas containing dust particles, especially for capturing fine particles, commonly used for flue gas dust removal in coal-fired power plants, waste incineration plants, etc.

bag filterUsing fiber woven filter bags to filter and capture dust. Suitable for processing low to medium concentration dust containing exhaust gases, such as those generated by cement plants, flour mills, etc. The advantages are high dust removal efficiency and strong adaptability, but the disadvantages are that the filter bag needs to be replaced regularly and the maintenance cost is high.
Electrostatic precipitatorSeparate dust from airflow using a high-voltage electrostatic field. Suitable for treating high concentration dusty exhaust gases, such as flue gas dust removal in thermal power plants, steel plants, etc. The advantages are high processing efficiency and low operating resistance, while the disadvantages are low efficiency for small particles, complex equipment, and high investment costs.

Plasma exhaust gas treatment equipmentUsing high-energy electrons, free radicals, and other active particles generated by plasma to react chemically with harmful substances in exhaust gas, converting them into harmless substances. Suitable for treating complex exhaust gases containing multiple harmful substances, such as those generated in industries such as electronics and chemical engineering. The advantages are high processing efficiency, wide applicability, and no secondary pollution. The disadvantages are high equipment costs and high operation and maintenance costs.
ozone generatorGenerate ozone and utilize its strong oxidizing properties to oxidize and decompose harmful substances in exhaust gases. Suitable for deodorizing low concentration organic waste gas and odorous gases, such as sewage treatment plants, garbage disposal sites, etc. The advantage is that the equipment is simple and easy to operate, but the disadvantage is that ozone has a certain corrosiveness and requires high material requirements for the equipment.