The organic waste gas to be treated is led out from the air duct and then enters the dry filter to remove the water and then enters the activated carbon adsorption bed. The organic substances in the gas are adsorbed on the surface of the activated carbon by the activated carbon, so that the gas can be purified and emptied. When the adsorption bed is saturated, the catalytic combustion furnace will work, and high temperature gas will be discharged into the adsorption bed, so that the organic matter will be separated from the adsorption bed, and the carbon dioxide and water will be discharged after catalytic combustion.
The activated carbon adsorption steam recovery device is mainly applicable to the purification of low concentration gaseous pollutants. For high concentration organic gases, it is usually necessary to reduce the concentration through condensation and other processes before adsorption purification. After the activated carbon has been adsorbed for a period of time, it is saturated and cannot normally adsorb the solvent. At this time, it is necessary to desorb the activated carbon. The desorbed medium steam and the organic waste gas desorbed from the steam are condensed and recycled by the condenser. This technology is a classic and commonly used gas purification technology.
RCO equipment can be directly applied to the purification of organic waste gas with medium and high concentrations (1000mg/m3 to 10000mg/m3). RCO equipment can also be applied to the activated carbon adsorption concentration catalytic combustion system to replace catalytic combustion and heater.
VOCs waste gas can be effectively adsorbed in the zeolite after passing through the hydrophobic zeolite concentration runner to achieve the purpose of removal. The clean gas of volatile organic compounds adsorbed by the zeolite is directly discharged into the atmosphere through the chimney. The runner rotates continuously at the speed of 1-6 revolutions per hour, while the adsorbed volatile organic compounds are transmitted to the desorption area. A small stream of heated gas is used in the desorption area to desorb volatile organic compounds, and the desorbed zeolite wheel rotates to the adsorption area to continuously adsorb volatile organic gases. The concentrated organic waste gas after desorption is sent to the incinerator for combustion and conversion into carbon dioxide and water vapor and discharged into the atmosphere.
Types of organic waste gas applicable to environmental protection equipment: alkanes, olefins, alcohols, ketones, ethers, esters, aromatics, benzene and other hydrocarbon organic waste gases; Low concentration of organics (lower than 25% LFL), large air volume;
The odor gas biological treatment device is a system that relies on microorganisms growing on the filler carrier to treat VOC. Microbes grow on the filter media in the form of biofilm, and the mass transfer and degradation of VOC substances are carried out in the same reactor. The spray circulation system above the bio bed filler circulates the liquid phase. The equipment is equipped with fillers attached with microorganisms. Due to the existence of carriers, the biomass of microorganisms increases, and the gas-liquid contact efficiency is high, which can achieve the goal of efficient removal. The microbial treatment method also has high treatment efficiency for hydrogen sulfide, chlorinated organics, toluene, etc. As long as the microorganisms are "inoculated" on the surface of the appropriate carrier filter material, the odor can be purified by controlling the conditions suitable for the growth of microorganisms and passing through.
At present, most corrosive gases (such as acid and alkaline waste gas) are treated by liquid absorption method. The acid mist waste gas is introduced into the purification tower through the air duct. After passing through the packing layer, the waste gas and the sodium hydroxide absorption solution are fully contacted by the gas-liquid two-phase absorption and neutralization reaction. After purification, the acid mist waste gas is dewatered and demisted by the demister and then discharged into the atmosphere by the fan. The absorption liquid is sprayed down from the tower top after being pressurized by water pump at the tower bottom, and then returns to the tower bottom for recycling.
The welding and polishing smoke and dust treatment device is widely used for the purification of smoke and dust generated in welding, polishing, cutting, polishing and other processes. It can purify a large number of small metal particles suspended in the air that are harmful to human health.
Pulse bag filter is a new high efficiency pulse bag filter based on the bag filter. In order to further improve the pulse bag filter, the modified pulse bag filter retains the advantages of high purification efficiency, large gas processing capacity, stable performance, convenient operation, long filter bag life, small maintenance workload, etc. In addition, the structure and pulse valve were reformed to solve the problems of outdoor installation and low pressure of compressed air source.
As shown in the figure, the dirty air (shown in dark red) is collected through the dust suction port and enters the filter. The front is an air deflector, which is used to change the air flow direction, so that the air flows upward into the filter chamber, so as to avoid direct impact on the filter element. After filtering and separation by the filter cartridge, the filtered clean air (shown in blue) is discharged into the outside world through noise elimination to complete the whole filtering process. Under the automatic cleaning function of the filter element, it falls into the dust container for collection. Application scenario