Industrial volatile organic pollutant purifying system dedicated to painting workshops

Abstract

The invention relates to an industrial volatile organic pollutant purifying system dedicated to painting workshops. The system comprises a catalytic gas inlet heater, a catalyzing bed, a catalyzing fan, a heat exchanger, an adsorption bed, an adsorption fan, a spraying and filtering device, a fire barrier, a filter, a desorption gas circulating fan, a desorption gas circulating heater and an adsorption bed desorption heater, wherein an industrial volatile organic pollutant waste gas inlet, a purified gas outlet, a desorption waste gas outlet, a desorption gas inlet, a desorption gas circulating outlet and a desorption gas circulating inlet are formed on the adsorption bed; and the heat exchanger is provided with a catalyzed tail gas inlet, a catalyzed tail gas outlet, a catalyzed gas inlet, a catalyzed gas outlet, a desorption gas supply inlet and a desorption gas supply outlet. The system improves the treatment heat efficiency, reduces the heat loss, improves the heat recovery rate, is more uniform in the temperature in the catalyzing bed during combustion, improves the combustion efficiency and the purification rate, improves heat exchange, more reasonably utilizes heat energy, and meets the requirements on energy conservation and emission reduction.

Description

technical field [0001] The invention belongs to the field of purification systems, in particular to an industrial volatile organic pollutant purification system specially used in spraying workshops. Background technique [0002] With the improvement of people's living standards, people pay more and more attention to environmental pollution. The word PM2.5 that appeared recently is one of the indicators of air pollution, and industrial volatile organic pollutants in PM2.5 are the most harmful to people's health. One of the most common pollutants, the main equipment in the purification system for industrial volatile organic pollutants currently includes adsorption beds and catalytic beds. The catalytic bed is usually made of heat-resistant steel plates or industrial kiln masonry materials. In the existing catalytic bed structure, the air inlet and the air outlet are located at the upper and lower ends of the catalytic bed. Although the existing structure can realize catalytic ...

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Problems solved by technology

[0002] With the improvement of people's living standards, people pay more and more attention to environmental pollution. The word PM2.5 that appeared recently is one of the indicators of air pollution, and industrial volatile organic pollutants in PM2.5 are the most harmful to people's health. One of the most common pollutants, the main equipment in the purification system for industrial volatile organic pollutants currently includes adsorption beds and catalytic beds. The catalytic bed is usually made of heat-resistant steel plates or industrial kiln masonry materials. In the existing catalytic bed structure, the air inlet and the air outlet are located at the upper and lower ends of the catalytic bed. Although the existing structure can realize catalytic combustion, there are the following problems: 1. The heat loss of the catalytic bed furnace structure itself is large, and the heat recovery and utilization efficiency is low. 2. The temperature in the structure of the catalytic bed furnace body is not uniform. The overall temperature is high in the center and low in the edge, which reduces the combustion efficiency of industrial volatile organic pollutants and affects the purification rate of catalytic combustion. 3. The energy saving effect is relatively low. Poor, does not meet the requirements of energy saving and emission reduction. In addition, the desorption gas concentration of the adsorption bed cannot be well controlled during the desorption process, which affects the catalytic combustion efficiency and heat energy utilization rate. In addition, in some paint spraying workshops, industrial volatile organic pollutants often Mixed with paint mist, the paint mist will adhere to the adsorption material in the adsorption bed when the adsorption bed is adsorbed, causing the adsorption bed to not work normally, reducing the purification treatment efficiency, increasing the purification treatment cost, and affecting normal production

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