VOCs waste gas treatment device

Abstract

The invention relates to a VOCs waste gas treatment device which comprises a waste gas collecting device, a waste gas treatment device, a condensing device, a safety device, an induced draft fan, an oil gas collecting device, a gas discharging device, a connecting pipe fitting of the gas discharging device and an electric control system device. The waste gas collecting device is connected with the waste gas treatment device, and the waste gas treatment device is composed of a hollow outer cylinder structure framework, an organic membrane micro-filtration pipe and a filter pipe inner baffle plate; the waste gas treatment device is connected with the condensing device through a first induced draft fan and is connected with the safety device through a second induced draft fan; the organic membrane micro-filtration pipe and the filter pipe inner baffle plate are arranged in the hollow outer cylinder structure framework in parallel, and the filter pipe inner baffle plate is perpendicular to the pipe wall of the organic membrane micro-filtration pipe to form crossed and alternate fan-shaped channels in the organic membrane micro-filtration pipe. By arranging the baffling concave-convex plate structure with the large specific surface area, organic components in the VOCs waste gas can be rapidly adsorbed, and are fully adsorbed and filtered by the organic membrane on the filter pipe, so that the purpose of effectively removing VOCs is achieved.

Description

technical field [0001] The invention relates to the field of environmental engineering, in particular to a VOCs waste gas treatment device. Background technique [0002] In the face of the increasingly serious environmental problems, the problem of waste gas treatment has increasingly become the focus of attention, especially the treatment of VOCs waste gas. The treatment methods of VOCs exhaust gas mainly include: incineration method, catalytic incineration method, absorption method, condensation recovery method, low temperature plasma method, photocatalytic oxidation method, etc. When the incineration method treats organic waste gas, due to the high temperature that needs to be maintained, it is easy to produce secondary pollution of NOx compounds. In addition, when VOCs are in medium and low concentrations, they need to rely on fuel for combustion, which will consume a lot of fuel and increase operating costs; catalytic incineration The advantage of this method is that t...

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Problems solved by technology

When the incineration method treats organic waste gas, due to the high temperature that needs to be maintained, it is easy to produce secondary pollution of NOx compounds. In addition, when VOCs are in medium and low concentrations, they need to rely on fuel for combustion, which will consume a lot of fuel and increase operating costs; catalytic incineration The advantage of this method is that the required combustion temperature is low, NOx compounds will not be produced, and the safety is good, but the performance of the catalyst is unstable, and the process requirements are strict, and the waste gas is not allowed to contain substances that affect the efficiency and life of the catalyst, and the operating cost Higher; the absorption method has simple equipment and low one-time investment cost, but the purification efficiency is not high, and it is easy to cause secondary pollution; the condensation recovery method uses the property that different substances have different saturated vapor pressures at different temperatures, so it is often used The low-temperature plasma method is suitable for the purification of low-concentration VOCs. The device is simple and the resistance is low. However, in the process of industrial VOCs purification, there are problems of low treatment efficiency and incomplete degradation products. Disadvantages: The photocatalytic oxidation method uses light of a specific wavelength to irradiate the VOCs adsorbed on the catalyst to achieve the purpose of oxidative decomposition. This technology has mild reaction conditions and simple equipment, but has low photon efficiency, and the catalyst is easy to deactivate and easy to produce ozone II. Defects of secondary pollution; activated carbon adsorption method, the internal activated carbon filler needs to be replaced in time after the adsorption is saturated, the replacement cost is high, and the replaced waste activated carbon is hazardous waste, and the disposal cost is high

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