Organic waste gas processing method and processing device

A technology for organic waste gas and treatment methods, applied in separation methods, chemical instruments and methods, and dispersed particle separation, etc., can solve problems such as insufficient degradation of organic matter, incomplete mineralization of organic matter, and limitations of ozone oxidation technology to achieve complete degradation, Low cost, effect of reducing processing cost

Inactive Publication Date: 2015-08-05
SHANDONG GREEN TESTING
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Problems solved by technology

The disadvantage of the combustion method is that it is unsafe and prone to secondary pollution; the disadvantage of the biological method, absorption method, and adsorption method is that the purification efficiency is low and secondary pollution occurs; An aromatic organic intermediate, resulting in insufficient degradation of organic matter; the disadvantage of low temperature plasma method is that it is not safe and the purification efficiency is low
[0004] With the development of technology, the application of ozone oxidation technology to the treatment of organic waste gas has emerged as the times require. Ozone has a strong oxidation ability. Ozone decomposition can produce hydroxyl radicals (OH), which can oxidize various organic and inorganic substances. , but because hydroxyl radicals cannot completely mineralize organic matter in low doses and short periods of time, the use of ozone oxidation technology is limited

Method used

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  • Organic waste gas processing method and processing device
  • Organic waste gas processing method and processing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Use the above treatment device to treat organic waste gas

[0059] (1) Spray oxidation:

[0060] a. Enter the organic waste gas into the advanced oxidation tower from the waste gas inlet, the feed rate of the organic waste gas is 2kg / h, the ozone generated by the ozone generator enters the aeration tray at the bottom of the advanced oxidation tower through the ozone inlet, and the feed rate of the ozone is 1kg / h, dispersed into the advanced oxidation tower through the aeration tray, and the organic waste gas and ozone are evenly distributed into the advanced oxidation tower through the packing layer;

[0061] b. Add an oxidation accelerator (preferably titanium dioxide) into water to form a spraying liquid, the molar ratio of titanium dioxide to water is 0.2:1, the spraying liquid is distributed to each nozzle through the distribution main pipe of the spraying device, and the spraying liquid is sprayed through the nozzle Liquid atomization, the spray liquid is disperse...

Embodiment 2

[0067] Use the above treatment device to treat organic waste gas

[0068] (1) Spray oxidation:

[0069] a. Enter the organic waste gas into the advanced oxidation tower from the waste gas inlet, the feed rate of the organic waste gas is 3kg / h, the ozone generated by the ozone generator enters the aeration tray at the bottom of the advanced oxidation tower through the ozone inlet, and the feed rate of the ozone is 3kg / h, dispersed into the advanced oxidation tower through the aeration tray, and the organic waste gas and ozone are evenly distributed into the advanced oxidation tower through the packing layer;

[0070] b. adding an oxidation accelerator (preferably titanium dioxide) into water to form a spray, the molar ratio of titanium dioxide to water is 0.5:1, then add sodium hydroxide to the spray to adjust the pH of the spray to 8, spray The spray liquid is distributed to each nozzle through the distribution main pipe of the spray device, and the spray liquid is atomized t...

Embodiment 3

[0076] Use the above treatment device to treat organic waste gas

[0077] (1) Spray oxidation:

[0078] a. Enter the organic waste gas into the advanced oxidation tower from the waste gas inlet. The feed rate of the organic waste gas is 1.5kg / h. The ozone generated by the ozone generator enters the aeration tray at the bottom of the advanced oxidation tower through the ozone inlet. The feed rate of the ozone is It is 3kg / h, dispersed into the advanced oxidation tower through the aeration tray, and the organic waste gas and ozone are evenly distributed into the advanced oxidation tower through the packing layer;

[0079] b. adding an oxidation accelerator (preferably titanium dioxide) into water to form a spray, the molar ratio of titanium dioxide to water is 1:1, and then adding potassium hydroxide in the spray to adjust the pH of the spray to 12, spray The spray liquid is distributed to each nozzle through the distribution main pipe of the spray device, and the spray liquid ...

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Abstract

The invention belongs to the technical field of waste gas processing, in particular to an organic waste gas processing method and processing device. The processing method includes steps of (1) spray oxidation, (2) catalytic oxidation, (3) acid-base neutralization and (4) recycling or emission; the processing device comprises an ozone generator, an advanced oxidation tower, a catalytic oxidation tower, an acid-base neutralization tower, an oxygen recycling tank and a chimney. According to the organic waste gas processing method, the ozone oxidation ability is 10 times of the individual ozone oxidation ability by means of oxidation accelerator, the ozone can generate a lot of hydroxyl radical, the ozone use ratio is more than 90%, the organic waste gas degradation rate is 40-50% higher than that of the individual ozone oxidation, and moreover, the processing device is low in energy consumption, the processing device only consumes electricity and water, the cost is low, the use is safe, the degradation is complete, secondary pollution is avoided, and secondary treatment is not needed.

Description

technical field [0001] The invention belongs to the technical field of waste gas treatment, and in particular relates to a method for treating organic waste gas and a treatment device thereof. Background technique [0002] Environmental issues have always been the focus of attention of all countries in the world. With the progress of society and the continuous expansion of industrial technology, chemical, pharmaceutical, food, paper, printing and dyeing industries will use a large amount of organic solvents such as polyester and resin in the production process. , glue, methyl ethyl ketone, thinner and other organic solvents, these heated organic solvents will turn into volatile organic waste gas, my country's resource consumption is mainly coal, and the emission of sulfur dioxide has also risen sharply, these organic waste gases directly Evacuation will seriously affect the quality of the surrounding air, cause serious pollution to the environment, and endanger human health an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/75B01D53/86B01D53/78
Inventor 马忠宾刘宁刘艳妮于军伟
Owner SHANDONG GREEN TESTING
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