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Method and device for processing malodorous gas by active bamboo charcoal-H2O2 complex phase catalytic oxidation

A multi-phase catalytic oxidation bed, malodorous gas technology, applied in the direction of chemical instruments and methods, catalyst regeneration/reactivation, combined devices, etc., can solve the problems of increasing device materials and volume, large ozone, large floor area, etc. Achieve the effect of good mechanical strength, not easy to break, and small air resistance

Inactive Publication Date: 2009-08-05
SHANGHAI SHUITIAN ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It has the function of ozone deodorization. Although ozone can oxidize odorous gas molecules, under normal conditions, the reaction speed of odor molecules oxidized by ozone is not very fast, which will lead to either a small amount of odor treatment or unsatisfactory deodorization effect. , or need to consume a large amount of ozone and increase the material and volume of the device
[0008] Chinese patent application number: 200510041341.4, which provides a deodorization device using water spray and biological filtration, its main disadvantage is that the biochemical reaction process of biological filtration requires a relatively long residence time, thus requiring a large floor area At the same time, the critical operating parameters such as the uniformity, air permeability, humidity, temperature and pH value of the filter material are also difficult to control, and leachate will also be generated, which also has limitations in the treatment of some complex and high-concentration odorous gases.

Method used

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  • Method and device for processing malodorous gas by active bamboo charcoal-H2O2 complex phase catalytic oxidation
  • Method and device for processing malodorous gas by active bamboo charcoal-H2O2 complex phase catalytic oxidation
  • Method and device for processing malodorous gas by active bamboo charcoal-H2O2 complex phase catalytic oxidation

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The preparation of embodiment 1 multiphase bamboo carbon catalyst

[0050] Raw material: hollow cylindrical bamboo, diameter Φ30mm-Φ50mm, length 30mm-50mm

[0051] Method: The composite bamboo carbon catalyst was prepared according to the following methods

[0052] 1. Bamboo charcoal is prepared by immersing the bamboo charcoal in a 0.8% by weight aqueous solution of ferrous sulfate with a pH of 2 for 2 hours, removing it and drying it in the air, and then drying it at a temperature of 100-300°C.

[0053] 2. Bamboo charcoal is prepared by immersing the bamboo charcoal in 0.1% by weight ferric sulfate aqueous solution with a pH of 3 for 2 hours, taking it out and drying it in the air, and then drying it at a temperature of 100-300°C.

[0054] 3. Bamboo charcoal is prepared by immersing the bamboo charcoal in a 1% by weight aqueous solution of ferrous sulfate with a pH of 5 for 2 hours, taking it out and drying it in the air, and then drying it at a temperature of 100-30...

Embodiment 2

[0058] Embodiment 2 activated bamboo carbon—H 2 o 2 Device for treatment of malodorous gas by multi-phase catalytic oxidation

[0059] Such as figure 1 Activated bamboo carbon shown—H 2 o 2 The device for treating malodorous gas by multi-phase catalytic oxidation includes exhaust gas inlet 31, preprocessor 32, two parallel wet bamboo carbon multi-phase catalytic oxidation beds 35, alkali spray tower 18, blower fan 8 and exhaust gas Barrel 24.

[0060] The preprocessor 32 is an aerosol dust collector. The alkali spray tower 18 is a vertical structure, connected behind the wet-type bamboo-carbon multi-phase catalytic oxidation bed, the weakly acidic gas produced after the treatment of the wet-type bamboo-carbon multi-phase catalytic oxidation bed is carried out to neutralize the chemical reaction, so that the purified gas discharged is in the form of Neutral, meeting the requirements of national emission standards. The neutralization solution is a NaOH aqueous solution wi...

Embodiment 3

[0075] Example 3 Malodorous gas treatment

[0076] A certain spice company produces the malodorous gas in the production of granular spice products, adopts the active bamboo carbon-H of embodiment 2 2 o 2 Multi-phase catalytic oxidation device treatment of malodorous gas. Exhaust gas enters through exhaust gas inlet 31, and through preprocessor 32, enters wet-type bamboo-carbon composite-phase catalytic oxidation bed 35 by exhaust-gas inlet 23, and in wet-type bamboo-carbon composite-phase catalytic oxidation bed, first passes through composite-phase bamboo-carbon catalyst 2 to absorb To remove odorous substance molecules, the aqueous solution of hydrogen peroxide is sprayed onto the multiphase bamboo carbon catalyst 2 through the nozzle 5 to decompose the adsorbed odorous substance molecules and achieve the recycling of the multiphase bamboo carbon catalyst, and the gas goes up to the mist eliminator 1 after water and gas separation , discharged from the purified gas outlet...

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Abstract

The invention relates to foul gas treatment technology and discloses a method and a device for treating foul gas through diphase catalytic oxidation of an activated bamboo charcoal-H2O2. The foul gas passes through a diphase bamboo charcoal catalyst and is adsorbed to remove foul substance molecules; an aqueous hydrogen peroxide solution is adopted to spray the diphase bamboo charcoal catalyst to decompose the adsorbed foul substance molecules so as to achieve cyclic utilization of the diphase bamboo charcoal catalyst; after water-gas separation by a demister, the gas is introduced to an alkali spraying tower; and an alkaline solution is sprayed to neutralize acidic substances of the gas; and the gas is discharged. The method for treating the foul gas has high treating efficiency and is in particular suitable for treating the foul gas with large wind volume.

Description

technical field [0001] The invention relates to the technical field of malodorous gas treatment, in particular to a device and method for treating malodorous gas. Background technique [0002] Odor pollutants refer to all gaseous substances that stimulate the olfactory organs to cause people's unpleasantness and damage the living environment. Usually people's understanding of malodorous gas is odor, such as the smell produced and volatilized by sewage, sludge, garbage, etc. In fact, in addition to the above-mentioned substances, foul-smelling gases can be produced in human production and living processes. The main ingredients except hydrogen sulfide (H 2 S), ammonia (NH 3 ), methyl mercaptan, methyl sulfide, dimethyl disulfide, carbon disulfide, styrene, and trimethylamine, there are thousands or tens of thousands of them. At present, domestic and foreign technologies for dealing with malodorous gases are mainly aimed at the above eight components. [0003] For example,...

Claims

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Application Information

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IPC IPC(8): B01D53/86B01D53/04B01J23/74B01J38/70B01J20/20B01J20/34B01D53/75B01D50/00
Inventor 侯惠奇蒋雪华阎栋志
Owner SHANGHAI SHUITIAN ENVIRONMENTAL PROTECTION
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