Sprinkling agent for reducing content of PM2.5 of haze producing matters in car exhaust gas

A technology for automobile exhaust and spray, which is applied in gas treatment, membrane technology, dispersed particle separation, etc., can solve the problems of difficult to exert the treatment effect, human health impact, difficult treatment, etc., and achieve good thermal stability and chemical stability, The effect of easy reaction operation and good processing effect

Inactive Publication Date: 2017-02-22
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the air fluidity is poor in smoggy weather, making it more difficult for household facilities such as humidifiers and nebulizers to function. The filter membranes of borrowed tools need to be replaced from time to time, which is troublesome.
In addition, it is difficult to exert a good treatment effect under the temperature environment when the automobile exhaust is emitted.
However, the air negative ion method is too cumbersome to operate. The negative ions in the air are easily combined with dust to form pollution particles with a certain polarity. The treatment of suspended fine particles is not thorough. In th

Method used

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  • Sprinkling agent for reducing content of PM2.5 of haze producing matters in car exhaust gas
  • Sprinkling agent for reducing content of PM2.5 of haze producing matters in car exhaust gas
  • Sprinkling agent for reducing content of PM2.5 of haze producing matters in car exhaust gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The formulation of the fog and haze reducing spray agent provided by the invention includes: 2.5% 1-alkyl-3-methylimidazole chloride, 10% dimethyl sulfoxide, 5% ethanol, and the rest is deionized water. and prepared by the following steps:

[0022] 1. Dilute the smog reducing spray in water at a ratio of 1:100;

[0023] 2. Determine a closed and fixed area, keep the temperature within the range of 35-40°C, spray 1g of PM2.5 obtained from automobile exhaust, create a smog area, and measure the content of PM2.5.

[0024] 3. Use an appropriate atomizing nozzle to spray the aqueous solution of the first on the haze area of ​​the second;

[0025] 4. After spraying, regularly observe and detect the reduction of PM2.5 content obtained from automobile exhaust in the confined space, and record the data.

Embodiment 2

[0027] The difference between this embodiment and the first embodiment is that the proportion of chlorinated 1-alkyl-3-methylimidazole in the formulation of the smog reducing spray is adjusted to 5%. Detect the reduction of PM2.5 content obtained from automobile exhaust in the confined space, and record the data.

Embodiment 3

[0029] The difference between the present embodiment and the first embodiment is that the proportion of chlorinated 1-alkyl-3-methylimidazole in the formulation of the smog reducing spray is adjusted to 7.5%. Detect the reduction of PM2.5 content obtained from automobile exhaust in the confined space, and the results are shown in Table 1.

[0030] Table 1

[0031]

[0032] It can be seen from Table 1 that the concentration of ionic liquid determines the degree of adsorption of smog. Within a certain concentration range, the larger the proportion of ionic liquid in the spray, the better the effect. However, if the amount of ionic liquid is too large, It will increase the viscosity of the spray and make it difficult to work. After a large number of experiments, it is concluded that when the proportion of the ionic liquid is 0.5% to 5%, the viscosity of the spraying agent is suitable and the sedimentation rate is relatively high.

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Abstract

The invention discloses a sprinkling agent for reducing the content of PM2.5 of haze producing matters in car exhaust gas. The sprinkling agent includes the components by the mass percentage: 0.5%-5% of an ionic liquid, 10% of a polar nonprotic solvent, 5% of ethanol, and the balance water, wherein the sum of the percentages of the components is 100%. The sprinkling agent has a certain viscosity with the help of the ionic liquid, a part of fine particles are physically settled, in addition, 1-alkyl-3-methyl imidazole chloride or 1-alkyl-3-methyl pyridine chloride easily undergoes adsorption reaction with the PM2.5 in the car exhaust gas, nitrogen oxides and sulfur oxides in the PM2.5 in the car exhaust gas are chemically decomposed, and a good treatment effect is played on the PM2.5. The sprinkling agent has simple operation, has no toxicity and harm to human bodies and environments, can increase the air humidity, and is a sprinkling agent for reducing the content of the PM2.5 of the haze producing matters in the car exhaust gas, wherein the sprinkling agent integrates characteristics of effectivity, convenient use and low price.

Description

technical field [0001] The invention relates to the field of atmospheric protection, in particular to a spray agent for reducing the content of PM2.5, a haze product in automobile exhaust. Background technique [0002] In recent years, various factors have contributed to the accelerated deterioration of air quality in many places in China, resulting in frequent occurrence of smoggy weather, which has seriously affected the normal order of society and public health. Different from fog, haze is a catastrophic weather phenomenon in which a large number of extremely fine dry dust particles are evenly floating in the air, resulting in a decrease in air transparency. Through investigation and research on areas frequently polluted by smog, the results show that sulfur dioxide, nitrogen oxides, and PM2.5 are the main components of smog. Because of its small particles, it can float in the air for a long time, and can be used as a carrier of toxic substances such as heavy metals and ...

Claims

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Application Information

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IPC IPC(8): B01D49/00B01D53/50B01D53/56B01D53/72B01D53/78
CPCB01D49/003B01D53/507B01D53/56B01D53/72B01D53/78B01D2258/01
Inventor 李宇亮马天培宁婷婷周鲁平王月花李鑫吴婷
Owner CHANGAN UNIV
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