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Gas absorbent for reducing gas concentration

A gas concentration and absorbent technology, applied in the field of harmful gas absorption materials, can solve problems such as complex preparation methods, achieve the effects of improving solubility, ensuring safety, and eliminating hidden dangers of explosion

Inactive Publication Date: 2009-11-04
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This recipe contains a variety of ingredients, and the preparation method is more complicated

Method used

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  • Gas absorbent for reducing gas concentration
  • Gas absorbent for reducing gas concentration
  • Gas absorbent for reducing gas concentration

Examples

Experimental program
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Effect test

Embodiment 1

[0029] This embodiment provides a gas absorbent for reducing gas concentration, the absorbent is a liquid mixed micellar solution composed of an ionic surfactant, a nonionic surfactant and water, by weight percentage, wherein The total weight of the ionic surfactant and the nonionic surfactant accounts for 10-20% of the total weight of the absorbent, and the rest is water. Wherein, the ionic surfactant is sodium lauryl sulfate. The nonionic surfactant is any one of alkylphenol polyoxyethylene ether (Triton x-100), Tween 80, and castor oil polyoxyethylene ether (EL-20).

[0030] In the above-mentioned absorbent, when the ionic surfactant adopts sodium lauryl sulfate, and the nonionic surfactant adopts alkylphenol polyoxyethylene ether (triton x-100), sodium lauryl sulfate The weight ratio of alkylphenol polyoxyethylene ether (Triton x-100) in the absorbent is preferably 1:3.

[0031] In the above-mentioned absorbent, when the ionic surfactant adopts sodium lauryl sulfate, and...

Embodiment 2

[0037] The gas absorbent for reducing the gas concentration provided in this example is specifically made by mixing ionic surfactants, nonionic surfactants, and water to form a mixed micellar solution, wherein the ionic surfactant Adopt sodium lauryl sulfate, its consumption is 5%, non-ionic surface active agent adopts alkylphenol polyoxyethylene ether (triton x-100), its consumption is 15%, other composition is water.

[0038] Gas absorbent in the present embodiment, when the concentration of sodium lauryl sulfate in absorbent as ionic surfactant is 5%, and as nonionic surfactant Triton x- When the concentration of 100 in the absorbent is 15%, the absorption liquid obtained after the absorbent of the composition absorbs methane carries out headspace gas chromatographic analysis, Figure 2a ~ Figure 2cIt is the gas chromatogram obtained after three headspace extraction gas chromatography analyzes after the absorbent absorbs methane (the peak area calculated according to the th...

Embodiment 3

[0040] The gas absorbent for reducing the gas concentration provided in this example is specifically formed by mixing ionic surfactants, amphoteric surfactants and water to form a liquid mixed micellar solution, wherein the ionic surfactants are Sodium lauryl sulfate, its consumption is 15%, nonionic surfactant is Tween 80, and its consumption is 5%, and other components are water.

[0041] The gas absorbent in this embodiment, after testing, when the concentration of sodium lauryl sulfate in the absorbent as the ionic surfactant is 15%, and Tween 80 as the ionic surfactant is added to the absorbent When the concentration in is 5%, the absorbing liquid obtained after the absorbent absorbing methane is carried out headspace gas chromatographic analysis, Figure 3a ~ Figure 3c It is the gas chromatogram obtained after carrying out three headspace extraction gas chromatography analysis after the absorbent absorbs methane (the peak area calculated according to the three headspace ...

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Abstract

The embodiment of the invention provides a gas absorbent for reducing gas concentration. The gas absorbent belongs to harmful gas absorbing materials of mines. The absorbent is liquid micellar solution formed by mixing the following materials of an ionic surfactant, a non-ionic surfactant and water, wherein the total weight of the ionic surfactant and the non-ionic surfactant accounts for 10-20 percent of the total weight of the absorbent, and the rest is the water. In the absorbent, the ionic surfactant, the non-ionic surfactant and the water are mixed according to the specific weight proportion for forming the mixed micellar solution, wherein the mixed micelle provides a non-polar micro-environment, and the micro-environment can be used as a distribution medium of organic matters, thereby greatly improving the solubility of the organic matters (including methane). The gas absorbent can inhibit the gas explosion on the mine working surface and enhance the safety of a coal mine.

Description

technical field [0001] The invention relates to a harmful gas absorbing material for coal mine safety production guarantee, in particular to a gas absorbing agent capable of effectively absorbing gas and reducing the gas concentration in the air. Background technique [0002] At present, ventilation devices and gas detection devices are mainly used in mines to prevent the occurrence of gas accidents. By controlling the gas concentration in the mine area, it is far below the gas explosion limit. In addition, gas explosion suppression and explosion-proof devices can be installed under the mine to suppress the development of the explosion. A sink shed and a rock powder shed are set up in areas where explosions may occur. When the gas explosion shock wave passes by, it is overturned by the blast wave, and the water and inert rock powder in the shed absorb the explosion energy to achieve the purpose of explosion suppression and explosion prevention. The anti-explosion and anti-e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14E21F5/00E21F7/00
Inventor 张增志谷娜
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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