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Method of treating VOCs (volatile organic compounds) and foul gas

A malodorous gas and exhaust gas technology, applied in separation methods, chemical instruments and methods, and separation of dispersed particles, can solve problems such as unsatisfactory treatment effects and application ranges, complete oxidation of pollutants, and large amounts of ozone residues. Excellent effect, maintenance of mass transfer efficiency, effect of enhanced mass transfer efficiency

Inactive Publication Date: 2019-05-24
SUZHOU INDAL TECH RES INST OF ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the field of exhaust gas treatment, most of the ozone is used alone at present, and when the ozone oxidation technology is used alone, there are problems such as it is difficult to completely oxidize the pollutants, too many by-products, and there are many residual ozone in the tail gas, and the treatment effect and application range are not good. Satisfactory

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The method for processing VOCs and malodorous gas comprises the following steps:

[0020] (1) Preparation of micro-nano bubbles: Pass ozone into an aqueous solution containing an oxidant and mix evenly, then pass the mixed solution into a micro-nano bubble generator to generate micro-nano bubbles. That is, first pass the ozone prepared by the ozone generator and the oxidant prepared by the oxidant generator into the ozone storage tank and the oxidant storage tank respectively, then inject the ozone into the solution containing the oxidant and mix evenly, and then mix the solution containing the ozone and the oxidant into the micro-nano bubble generator.

[0021] (2) Degradation: The micro-nano bubbles are passed into the catalytic oxidation tower, the top of the catalytic oxidation tower is sprayed with liquid, and the bottom of the catalytic oxidation tower is passed into the waste gas to be treated. Micro-nano bubbles, liquid, and waste gas to be treated contact and ...

Embodiment 2

[0027] The only difference with Example 1 is:

[0028] The oxidizing agent is potassium permanganate.

[0029] Micro-nano bubbles are 1 micron in diameter.

[0030] The liquid sprayed from the top of the catalytic oxidation tower is an organic solvent, and the organic solvent is ethanol.

Embodiment 3

[0032] The only difference with Example 1 is:

[0033] The oxidizing agent is potassium permanganate.

[0034] Micro-nano bubbles have a diameter of 10 microns.

[0035] The liquid sprayed from the top of the catalytic oxidation tower is water agent.

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Abstract

The invention discloses a method of treating VOCs (volatile organic compounds) and foul gas. The method comprises the steps of preparing micro-nano bubbles, to be specific, introducing ozone into an aqueous solution containing an oxidant, mixing well, and introducing the mixed solution into a micro-nano bubble generator to generate micro-nano bubbles; degrading, to be specific, introducing the micro-nano bubbles into a catalytic oxidizing column, spraying a liquid to the top of the catalytic oxidizing column, introducing waste gas to be treated into the bottom of the catalytic oxidizing column, subjecting the micro-nano bubbles, the liquid and the waste gas to be treated to contact reaction in the catalytic oxidizing column, and oxidatively degrading the waste gas. The method has the advantages of good treatment effect and basically zero residue.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment, in particular to a method for treating VOCs and malodorous gases. Background technique [0002] A large amount of odorous and harmful gases are produced in industrial production, and these odorous gases must be collected and treated before being discharged. However, the components of these malodorous gases are complex, difficult to deal with by ordinary technologies, and difficult to control. [0003] Ozone oxidation has been widely used in wastewater treatment. On this basis, it can be combined with other chemical oxidants such as hydrogen peroxide and sodium hypochlorite to achieve good treatment results. However, in the field of exhaust gas treatment, most of the ozone is used alone at present, and when the ozone oxidation technology is used alone, there are problems such as it is difficult to completely oxidize the pollutants, too many by-products, and there are many residual ozo...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/86B01D53/44
Inventor 盛重义冼耀华陈秀琴周剑峰
Owner SUZHOU INDAL TECH RES INST OF ZHEJIANG UNIV
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