Efficient VOC treatment system and treatment process flow adopting novel heat exchanger

Abstract

The invention discloses an efficient VOC treatment system and treatment process flow adopting a novel heat exchanger, and belongs to the technical field of waste gas treatment equipment. The efficient VOC treatment system is characterized in that the gas outlet end of a pre-treatment module communicates with the gas inlet end of a catalytic combustion module; the gas outlet end of the catalytic combustion module communicates with the atmosphere; a heat exchange unit is arranged between a power generation unit and the gas outlet end of the catalytic combustion module; and the power generation module is electrically connected with the catalytic combustion module through a wire and provides electricity for the catalytic combustion module. By adoption of the efficient VOC treatment system adopting the novel heat exchanger, environment pollution is avoided, and heat generated after VOC waste gas is combusted can be fully reutilized, so that self energy supply is guaranteed, and energy waste is effectively avoided; the VOC waste gas is effectively treated by pre-treating the VOC waste gas and exhausting the VOC waste gas into the atmosphere after catalytic combustion; and low-temperature gas after catalytic combustion and primary heat exchange is utilized for heat-exchange power generation by the power generation module through the heat exchange unit, electric energy is provided for heating of the catalytic combustion module, and the utilization rate of the energy sources is increased accordingly.

Description

technical field [0001] A high-efficiency VOC treatment system using a novel heat exchanger and its treatment process belong to the technical field of waste gas treatment equipment. Background technique [0002] VOC is a kind of volatile organic compound, which mainly comes from the waste gas emitted by petrochemical, pharmaceutical, printing, painting, motor vehicle, shoemaking and other industries. This kind of organic waste gas will cause great harm to human health, and it will interact with NO in the atmosphere 2 The reaction produces O 3 , making O in the lower atmosphere 3 When the concentration increases, photochemical smog is formed, which is harmful to human health and leads to crop production reduction. [0003] The main existing VOC treatment technologies include regenerative thermal oxidizer technology (RTO) and catalytic combustion technology. Although RTO has high efficiency, it is bulky and expensive, so it is difficult to implement. In the existing catalyt...

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Problems solved by technology

This kind of organic waste gas will cause great harm to human health, and it will interact with NO in the atmosphere 2 The reaction produces O 3 , making O in the lower atmosphere 3 The concentration rises, forming photochemical smog, which endangers human health and leads to crop yield reduction

[0003] The main existing VOC treatment technologies include regenerative thermal oxidizer technology (RTO) and catalytic combustion technology. Although RTO has high efficiency, it is bulky and expensive, so it is difficult to implement

In the existing catalytic combustion technology, the utilization rate of waste heat is low, that is, the heat exchange efficiency between the untreated gas and the burned gas is low, so it is necessary to supplement the heating of the catalytic combustion gas, which leads to high energy consumption and waste of heat. big problem

According to statistics, the temperature of the untreated gas after preheating is still about 150°C, and this part of the gas is directly discharged into the atmosphere, which will pollute the environment, and the heat of this part of the gas is not fully utilized, resulting in a waste of energy

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