Industrial spray painting room catalytic combustion equipmentIntroduction:
Provided by Zhonghe Environmental ProtectionIndustrial spray painting room catalytic combustion equipmentThe purification efficiency is over 97%, and the manufacturer's construction period is 3-5 days on the premise of product quality. The catalyst has a long service life and can be used with smooth airflow and low resistance.
Production parameters air volume: 10000 air volume, 20000 air volume, 30000 air volume, 40000 air volume, 50000 air volume and other big data painting room catalytic combustion equipment
One Overview of catalytic combustion equipment in industrial spray painting rooms:
The catalytic combustion equipment technology in industrial spray painting rooms provides an economic solution for the treatment of pollutants. The use of catalytic technology to treat organic waste gas has high purification efficiency, low energy consumption, and produces harmless carbon dioxide and water without secondary pollution. The efficiency of catalytic purification can generally reach over 97%. It is a technology for high concentration, low flow organic waste gas.
Catalytic combustion purification method, like direct combustion purification method, belongs to thermal destruction method, and its mechanism is oxidation and thermal cracking. The organic components in the thermal decomposition exhaust gas are decomposed into carbon dioxide and water. But for the treatment of high concentration organic waste gas, catalytic decomposition is generally considered the ideal method. The reason is that the temperature of catalytic combustion is much lower than that of thermal incineration, and it has high efficiency, low energy consumption, small pressure drop, requires small equipment volume, low cost, and does not produce nitrogen oxides. Our industrial spray painting room catalytic combustion purification equipment can be widely used for the purification treatment of high concentration organic waste gases generated in various industries. The types of organic compounds that can be treated include benzene, ketones, esters, alcohols, ethers, alkyl compounds, etc.
II Principle of catalytic combustion equipment in industrial spray painting room:
1. Definition of catalyst: A catalyst is a substance that can increase the rate of a chemical reaction, control the direction of the reaction, and maintain its chemical properties before and after the reaction.
2. Catalytic mechanism: In a chemical reaction process, the addition of a catalyst does not change the original chemical equilibrium, only the rate of the chemical reaction, and the properties of the catalyst itself do not change before and after the reaction. The catalyst itself participates in the reaction, and it is precisely because of its participation that the original pathway of the reaction is changed, reducing the activation energy of the reaction and accelerating the reaction rate.
III Composition of catalytic combustion equipment system for industrial spray painting room:
The process composition of catalytic combustion in industrial paint spraying rooms varies depending on the emission scenarios and different exhaust gases, and there are different process flows. Regardless of which process flow is adopted, it is composed of the following process units.
2. Waste gas pretreatment: In order to avoid clogging and catalyst poisoning of the catalyst bed, the waste gas is pretreated before entering the bed to remove dust, droplets, and catalyst toxins from the waste gas.
3. Preheating device: The preheating device includes an exhaust gas preheating device and a catalyst burner preheating device. Because catalysts have a catalytic activity temperature, it is called the catalyst ignition temperature for catalytic combustion. A preheating device is installed to ensure that the temperature of the exhaust gas and bed reaches the ignition temperature before catalytic combustion can proceed. But for situations where the exhaust gas itself has a high temperature, such as enameled wires, insulation materials, baking paint, etc., and the temperature can reach 300 ℃ or above, there is no need to install a preheating device.
4. The hot gas heated by the preheating device can be obtained by using a heat exchanger and piping inside the bed. The heat source of the preheater can be flue gas or electric heating, and currently electric heating is more commonly used. After the catalytic reaction begins, the recovered reaction heat can be used as much as possible to preheat the exhaust gas. In situations with high reaction heat, waste heat recovery devices should also be installed to save energy.
The temperature of the heat source for preheating exhaust gas generally exceeds the activity temperature of the catalyst. To protect the catalyst, the heating device should be kept at a distance from the catalytic combustion device, which can also make the exhaust gas temperature distribution uniform. In the catalytic combustion of organic waste gas, the organic waste gas to be treated can easily cause explosions when mixed with air at high temperatures, making safety an important issue. Therefore, on the one hand, the mixing ratio of organic matter and air should be controlled to be within the lower explosive limit; On the other hand, the catalytic combustion system should be equipped with monitoring and alarm devices and explosion-proof measures.
4 Applicable occasions and scope of catalytic combustion in industrial spray painting rooms:
The equipment is suitable for purifying various industrial waste gases. Process organic waste gas with a gas flow rate of 10000-60000m3/h and a gas concentration of 4000-9000mg/m3, and other situations that generally require relatively stable concentration and flow rate.
Five Characteristics of catalytic combustion equipment in industrial spray painting rooms:
1. The industrial spray painting room catalytic combustion process is used to purify organic waste gas, which can simultaneously remove various organic pollutants. It has the advantages of simple process flow, compact equipment, and reliable operation.
2. Adopting electric heating for start-up has the advantages of easy operation and low operating costs;
3. The process has multiple safety protection measures to ensure the safe operation of the system;
4. The entire process produces no wastewater, and the purification process does not generate secondary pollution;
5. Has high purification efficiency, generally reaching a removal rate of over 97%;
6. This process and equipment can be widely used for the purification treatment of high concentration organic waste gases generated in various industries. The types of organic compounds that can be treated include benzene, ketones, esters, alcohols, ethers, alkyl groups, etc