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Method for purifying organic waste gas

A technology for waste gas and organic matter, applied in chemical instruments and methods, separation methods, use of liquid separation agents, etc., can solve problems such as limited gas-liquid contact efficiency, achieve good organic concentration homogenization effect, improve stability, and improve treatment efficiency Effect

Active Publication Date: 2007-11-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent has an ideal effect when dealing with this type of exhaust gas, but due to the limited gas-liquid contact efficiency, the concentration buffering effect needs to be further improved

Method used

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  • Method for purifying organic waste gas
  • Method for purifying organic waste gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～8

[0025] A polyester production plant emits waste gas, and its waste gas discharge volume is 100-1500m 3 / h; Exhaust gas contains acetaldehyde, paraldehyde, 2-methyl-1,3-dioxolane, ethylene glycol droplets, polyester particles and other substances, among which acetaldehyde and 2-methyl- 1,3-dioxolane is the main one, and its total hydrocarbons range from 3000 to 20000 μL / L. The exhaust gas is led out by a fan, and after the ethylene glycol mist and solid particles are removed by the cyclone separator with spray water, the exhaust gas containing pollutants such as acetaldehyde and 2-methyl-1,3-dioxolane enters The adsorption tank performs concentration homogenization treatment; the exhaust gas after the total hydrocarbon concentration homogenization treatment enters the heat exchanger, exchanges heat with the gas discharged from the catalytic combustion reactor to a certain temperature, and then enters the heater. The temperature of the exhaust gas entering the heater reaches the ...

Embodiment 9

[0027] This example illustrates the homogenization effect of the homogenizing absorber. The concentration homogenizing substance is activated carbon particles, and the volume space velocity is 400h -1 . Absorber inlet total hydrocarbon is 3000-20000μL / L, acetaldehyde is 800-10000μL / L, 2-methyl-1,3-dioxolane is 500-2000μL / L, paraldehyde is 0-100μL / L L, ethylene glycol mist and solid particles were not detected. The total hydrocarbon at the outlet of the concentration homogenizer is 5000~13000μL / L, the acetaldehyde is 1200~8500μL / L, the 2-methyl-1,3-dioxolane is 800~1600μL / L, and the paraldehyde is 10~ 50μL / L. The homogenization results are shown in Figure 1, and the homogenization effect is obvious.

[0028] implement

[0029] Note 1: Φ2 etc. represent the diameter of the ball, Φ3×4 represent the diameter (3) and length (4) of the bar, and the unit is mm. The volume ratio of homogenized substances with different concentrations is 1:1.

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Abstract

The invention is concerned with a purity method of organic exhaust gas belonging to exhaust gas purity dispose technology field, especially with a cleaning method for the exhaust gas, such as gas organic matter, water-solubility organic matter fog drop and solid grain. Contact the exhaust gas with a few water to remove water-solubility organic matter fog drop and solid grain, and separate the gas and water with cyclone separator, then use solid adsorbent to dispose the gas organic matter, at last carry catalyze burning. It use only a few water to remove the water-solubility organic matter fog drop and solid grain and solid adsorbent to dispose the gas organic matter and this assures the steady and long time function of catalyze burning equipment. It has short flow, simple equipment and good dispose effect.

Description

technical field [0001] The invention relates to a method for purifying organic waste gas, in particular to a method for purifying waste gas containing gaseous organic matter, water-soluble organic matter droplets and solid particles. Background technique [0002] Organic waste gas is a common pollutant in the production process of petroleum, chemical, light industry, food and other industries. The composition of organic waste gas is closely related to the production process, and in most cases its composition is complex. Among them, there is a type of waste gas, which contains gaseous organic matter, organic matter droplets and solid particles, and has many components, which cannot be purified by existing methods such as adsorption. The more common ones are various oxygen-containing compound production processes, such as waste gas produced by polyester production process, polyether production process, and organic acid production process by oxidation method. The waste gas em...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14B01D53/72B01D53/86B01D50/00B01D47/06
Inventor 刘忠生王新方向晨王海波陈玉香
Owner CHINA PETROLEUM & CHEM CORP