Electroplating plant production process will produce cyanide, chromium-containing waste gas, as well as in the pickling process will produce acid mist. These exhaust gases will affect the working environment of the workshop, but also pollute the surrounding environment, the need for timely exhaust gas treatment to discharge, plating plant exhaust gas how to deal with? Here with the Everest blue editorial take a look.
Installation of air exhaust system and purification system in electroplating factory
Considering the management of electroplating exhaust gas, you can remove the toxic and harmful gases by installing an exhaust system to transport the contaminated exhaust gas to the gas purification system. It can be seen that the installation of exhaust air system and purification system are one and the same whole. Electroplating plant area is generally larger, and belongs to a unified production process, the working staff is distributed throughout the room, in order to maintain a certain negative pressure indoors, should be used in the whole m ventilation of mechanical air supply. The source of pollutants are some plating tanks, the work process pollutants will be released directly from the plating tanks, so only the first plating tanks for each local exhaust, and then according to the provisions of the sub-quality treatment, meet the standards discharged to the outdoors. In order to exhaust wind average, reduce the resistance of ventilation system, the bend of the duct, tee connection to follow the air flow towards the design. In order to adjust the fair air volume, the air duct can also be done to adjust the dampers. Acidic waste gas management, in which the main method of acidic waste gas purification is to acidic waste gas with three-stage lye spray, and then there is a chimney discharge, with the method of absorption of acidic waste gas, the installation of airtight cover on the vacuum pumping pump, the workshop gas emissions, into the spray tower equipped with filler. The efficiency of this process to remove acidic waste gas can be more than 90%.
Electroplating plant exhaust treatment recommended use of spray tower + dry filter + activated carbon adsorption concentration + catalytic combustion
Equipment working principle: the whole system is divided into adsorption and desorption of the two sectors run independently, adsorption system: the use of activated carbon as a carrier, the workshop process generated by the air volume, low concentration of exhaust gas directly through the activated carbon adsorption and purification to meet the discharge standards. After the activated carbon is saturated around the adsorption, the adsorption valve of this adsorption carbon box is closed. The adsorption valve of another new carbon box is opened to inherit the adsorption purification. At the same time start the desorption system. In the desorption process is complete, the carbon box will be used as a new carbon box into the next cycle. Desorption system: take a department of catalytic furnace internal high temperature through the heat exchanger after heating the heat flow led to the need to desorb the carbon box, the organic matter in the activated carbon for desorption, desorption of high concentrations of VOC airflow is oxidised fan preheated by the heat exchange and sent to the combustion tower combustion oxidation process, the emission of harmless small molecules compounds, such as: CO2, H2O and so on. After combustion, the high-temperature airflow once again passes through the heat exchange chamber, exchanging heat with the room temperature airflow to form a heat flow, which is then used for desorption of saturated activated carbon. The purpose of energy saving and VOC removal is achieved.
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Guangdong Public Security Bureau No. 44190002006305
