VOCs high-efficiency processing method

A catalytic oxidation and petrochemical technology, applied in separation methods, chemical instruments and methods, and dispersed particle separation, etc., can solve the problems of large area occupied by biological methods, inappropriate treatment of organic waste gas, high operating costs, etc., and achieve low engineering cost, Significant economic and social benefits, the effect of less consumption

Inactive Publication Date: 2014-04-16
JIANGSU ZHONGKE RUISAI POLLUTION CONTROL ENG +1
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Problems solved by technology

[0006] Among the destruction and treatment technologies of organic waste gas, the application of the biological method is limited due to the large area occupied. Due to the limitation of biological species, there are many organic substances that cannot be treated by the biological method. In addition, due to the short research time, its mechanism, process and Many aspects such as engineering have yet to be further explored
Plasma catalytic oxidation, microwave catalytic oxidation and photocatalytic oxidation are still in the stage of laboratory research, and there are still many problems, such as the operation stability of electron accelerators, which are difficult to solve now, and there is still a relatively long distance from industrial application
At present, the combustion method that has been practically used in the industry has high operating costs, and improper control of process conditions can easily produce secondary pollutants. If the temperature is too low, incomplete combustion will produce dioxins, and when the temperature is too high, it will produce NO. x etc., it is not suitable to deal with low concentration organic waste gas

Method used

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Effect test

Embodiment 1

[0048] An efficient treatment method for VOCs, the method uses catalytic oxidation and adsorption processes to treat petrochemical industry organic waste gas, and the method includes the following steps:

[0049] (1) Use a bag filter to pretreat the petrochemical industrial organic waste gas, recover some materials, and then introduce an electrostatic precipitator for electrostatic dust removal to further recover materials; the bag filter is installed at the drying tail gas of petrochemical products;

[0050] (2) Catalytic oxidation treatment is performed on the exhaust gas treated in step (1); the catalyst used in the catalytic oxidation treatment is a Pt catalyst; a temperature control system is set near the surface of the Pt catalyst, and an ozone generator is set above;

[0051] (3) The waste gas treated in step (2) is subjected to activated carbon adsorption treatment and then discharged.

Embodiment 2

[0053] An efficient treatment method for VOCs, the method uses catalytic oxidation and adsorption processes to treat petrochemical industry organic waste gas, and the method includes the following steps:

[0054] (1) Use a bag filter to pretreat the petrochemical industrial organic waste gas, recover some materials, and then introduce an electrostatic precipitator for electrostatic dust removal to further recover materials; the bag filter is installed at the drying tail gas of petrochemical products;

[0055] (2) Perform catalytic oxidation treatment on the waste gas treated in step (1); the catalyst used in the catalytic oxidation treatment is a manganese oxide catalyst; a temperature control system is installed near the surface of the manganese oxide catalyst, and an ultraviolet ozone generator is arranged above;

[0056] (3) The exhaust gas treated in step (2) is subjected to activated carbon adsorption treatment and then discharged. The activated carbon is in the form of fi...

Embodiment 3

[0058] An efficient treatment method for VOCs, the method uses catalytic oxidation and adsorption processes to treat petrochemical industry organic waste gas, and the method includes the following steps:

[0059] (1) Use a bag filter to pretreat the petrochemical industrial organic waste gas, recover some materials, and then introduce an electrostatic precipitator for electrostatic dust removal to further recover materials; the bag filter is installed at the drying tail gas of petrochemical products;

[0060] (2) Perform catalytic oxidation treatment on the waste gas treated in step (1); the catalyst used in the catalytic oxidation treatment is a manganese oxide catalyst; a temperature control system is installed near the surface of the manganese oxide catalyst, and an ultraviolet ozone generator is arranged above;

[0061] (3) The exhaust gas treated in step (2) is subjected to activated carbon adsorption treatment and then discharged. The activated carbon is in granular form,...

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Abstract

The invention relates to a VOCs (Volatile Organic Compounds) high-efficiency processing method. In the method, dust removal processing, odor removal processing and tail gas processing are carried out on waste gas. Firstly, a bag-type dust collector is adopted to carry out preprocessing on the waste gas, parts of materials are recovered and then an electrostatic dust collector is introduced to further recovery the materials; then the waste gas is subjected to low-temperature catalytic oxidation processing; the waste gas is subjected to adsorption processing. According to the invention, the petrochemical industrial organic waste gas is processed by utilizing the combination of catalytic oxidation and adsorption processes, so that the materials can be well recovered, odor of the organic waste gas is eliminated and the problem of emission of petrochemical industrial tail gas is solved. The method disclosed by the invention has a good purifying effect and low consumption and is low in engineering cost; the materials can be recovered; flue gas emission concentration is lower than the emission standard by over 30 percent; the VOCs high-efficiency processing method has obvious economic benefits and social benefits and can be used for processing the petrochemical industrial organic waste gas with high concentration, high flow and complex ingredients.

Description

technical field [0001] The invention belongs to the technical field of waste gas treatment, and relates to an efficient treatment method for VOCs, in particular to a petrochemical industry organic waste gas treatment method which effectively combines catalytic oxidation and adsorption. Background technique [0002] VOCs (Volatile Organic Compounds, volatile organic compounds) are one of the common pollutants emitted by petrochemical, pharmaceutical, printing, painting and other industrial production processes and motor vehicles. With the development of industry, the emission of VOCs is increasing day by day, and has the characteristics of wide range and large emission. Its treatment has become one of the hot spots in the current international environment, and relevant environmental legislation is becoming increasingly strict. VOCs are a class of hydrophobic and persistent organic pollutants, which are easy to accumulate in fat-rich tissues, and most of them are carcinogenic,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D50/00B01D53/86B01D53/44
Inventor 岳仁亮季冬冬吴傲立
Owner JIANGSU ZHONGKE RUISAI POLLUTION CONTROL ENG
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