An energy-saving multi-effect vocs purification reactor

Abstract

The invention discloses an energy-saving multi-effect VOCs purification reactor, which includes a purification device, and a filter device is arranged on the left side of the purification device; the absorption device is driven by exhaust gas to stir the absorption liquid to make the gas-liquid The increase of turbulence can not only promote VOCs to enter the absorption liquid, but also increase the speed of VOCs to enter the absorption liquid. The absorption liquid is sprayed through the spray mixing device, so that the absorption liquid is mixed with the exhaust gas in the form of droplets, and the exhaust gas is purified again. The effect is further improved. At the same time, the spray mixing device can mix the exhaust gas and the mist evenly, which helps to increase the purification effect. Through the cooperation of the weighing device, the liquid discharge device and the liquid level control device, the use degree of the absorption liquid is monitored and automatically The replacement of the absorbing liquid avoids the problems of incomplete use of the absorbing liquid causing waste and oversaturation of the absorbing liquid affecting the exhaust gas purification effect, and improves the practicability of the energy-saving multi-effect VOCs purification reactor.

Description

Technical field [0001] The invention relates to the field of VOCs purification reactors, and more specifically, to an energy-saving multi-effect VOCs purification reactor. Background technique [0002] VOCs refer to organic compounds with a saturated vapor pressure greater than 70 Pa at normal temperature and a boiling point below 260°C at normal pressure, or all organic compounds with a vapor pressure greater than or equal to 10 Pa and volatility at 20°C. They are ubiquitous in the atmosphere. An organic pollutant mainly from coal chemical, petrochemical, fuel coating manufacturing, solvent manufacturing and use, automobile engine exhaust, pharmaceuticals and other industries. Its main components are hydrocarbons, phenols, aromatics, etc., VOCs participate The formation of ozone and secondary aerosols in the atmospheric environment has an important contribution to regional atmospheric ozone pollution and PM2.5 pollution. Most VOCs have unpleasant special odors, and are toxic, ir...

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Problems solved by technology

[0003] The existing absorption VOCs purification reactor is mainly composed of an intake pipe, a dust filter, an absorption tower, a spray head, a circulation pump, and an air outlet pipe. Drive the absorption liquid in the absorption tower to move and spray it out through the spray head, then the absorption liquid contacts the VOCs in the exhaust gas, and then the VOCs dissolve in the absorption liquid or react with the absorption liquid, and transfer the VOCs in the exhaust gas to the absorption liquid, To achieve the purpose of purifying VOCs exhaust gas, however, in the actual use process, the dust filter is easily blocked by particles in the exhaust gas, and the dust filter needs to be disassembled and cleaned frequently. The operation is very troublesome, time-consuming and laborious, and reduces the treatment efficiency of exhaust gas Moreover, the contact area between the exhaust gas and the absorption liquid is small, resulting in a slow rate of VOCs entering the absorption liquid, further reducing the treatment efficiency of the waste gas, and the purification effect is poor. At the same time, the absorption liquid in the absorption tower needs to be replaced by workers regularly, which is affected by the VOCs content in the exhaust gas. Influence, this method of replacing the absorption liquid has the disadvantages of incomplete use of the absorption liquid resulting in waste and oversaturation of the absorption liquid affecting the exhaust gas purification effect, so it is urgent to design an energy-saving multi-effect VOCs purification reactor

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