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Diesel tail gas treating agent production method

A technology for tail gas treatment and production methods, which is applied in gas treatment, separation methods, chemical instruments and methods, etc., to achieve the effects of wide source of raw materials, remarkable treatment effect, and remarkable purification effect.

Inactive Publication Date: 2016-08-17
NANNING XIAYANG CHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention aims at the problems existing in the production process of the existing diesel engine exhaust treatment agent, and provides a production method of the diesel engine exhaust treatment agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A production method of a diesel engine exhaust treatment agent, comprising the following steps:

[0027] (1) Ingredients: Weigh 30kg of urea, 80kg of high-purity water, 8kg of methanol, 4kg of oxalic acid amide and 2kg of cocamidopropyl betaine;

[0028] (2) Dissolution: Mix urea and high-purity water, and stir for 20 minutes at a temperature of 55°C and a rotation speed of 250r / min to obtain a urea solution;

[0029] (3) Adsorption and impurity removal: add 3 kg of cellulose xanthate adsorbent to the above urea solution, continue stirring for 40 minutes, and then filter to remove solid impurities to obtain a clarified urea solution;

[0030] (4) Membrane filtration: filter the clarified urea solution with a nanofiltration membrane with a pore size of 1 nm to obtain a pure urea solution;

[0031] (5) Mixing: Mix the pure urea solution with the above-mentioned methanol, oxalic acid amide and cocamidopropyl betaine at a speed of 250r / min for 30min to obtain the diesel en...

Embodiment 2

[0036] A production method of a diesel engine exhaust treatment agent, comprising the following steps:

[0037] (1) Ingredients: Weigh 35kg of urea, 90kg of high-purity water, 10kg of methanol, 5kg of oxalic acid amide and 3kg of cocamidopropyl betaine;

[0038] (2) Dissolution: Mix urea and high-purity water, and stir for 15 minutes at a temperature of 60°C and a rotation speed of 300r / min to obtain a urea solution;

[0039] (3) Adsorption and impurity removal: Add 4kg of cellulose xanthate adsorbent to the above urea solution, continue to stir for 30min, then filter to remove solid impurities to obtain a clarified urea solution;

[0040] (4) Membrane filtration: filter the clarified urea solution with a nanofiltration membrane with a pore size of 1 nm to obtain a pure urea solution;

[0041] (5) Mixing: Mix the pure urea solution with the above-mentioned methanol, oxalic acid amide and cocamidopropyl betaine at a rotation speed of 300r / min for 40min to obtain the diesel eng...

Embodiment 3

[0046] A production method of a diesel engine exhaust treatment agent, comprising the following steps:

[0047] (1) Ingredients: Weigh 40kg of urea, 100kg of high-purity water, 12kg of methanol, 3kg of oxalic acid amide and 5kg of cocamidopropyl betaine;

[0048] (2) Dissolution: Mix urea and high-purity water, and stir for 20 minutes at a temperature of 65°C and a rotation speed of 350r / min to obtain a urea solution;

[0049] (3) Adsorption and impurity removal: Add 5 kg of cellulose xanthate adsorbent to the above urea solution, continue to stir for 20 minutes, and then filter to remove solid impurities to obtain a clarified urea solution;

[0050] (4) Membrane filtration: filter the clarified urea solution with a nanofiltration membrane with a pore size of 2nm to obtain a pure urea solution;

[0051] (5) Mixing: Mix the pure urea solution with the above-mentioned methanol, oxalic acid amide and cocamidopropyl betaine at a speed of 350r / min for 20min to obtain the diesel en...

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PUM

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Abstract

The invention discloses a diesel tail gas treating agent production method. The method includes steps: weighing, by weight, 30-40 parts of carbamide, 80-100 parts of high-purity water, 8-12 parts of methanol, 3-5 parts of aminooxoacetic acid and 2-5 parts of cocamidopropyl betaine; mixing the carbamide and the high-purity water, and stirring to obtain a carbamide solution; adding a cellulose xanthate adsorbent into the carbamide solution, stirring, filtering, and removing solid impurities to obtain a clear carbamide solution; filtering through a nanofiltration membrane with the pore diameter being 1-2nm to obtain a pure carbamide solution; mixing with the methanol, the aminooxoacetic acid and the cocamidopropyl betaine, and well stirring to obtain a diesel tail gas treating agent. The diesel tail gas treating agent production method has advantages of technical simplicity, high production efficiency, environment friendliness, low cost, remarkable impurity removal effects and the like.

Description

technical field [0001] The invention relates to the technical field of automobile tail gas treatment, in particular to a production method of a diesel engine tail gas treatment agent. Background technique [0002] In recent years, air quality has continued to decline, and smog has become increasingly serious. Motor vehicle exhaust emissions account for about 20% to 25% of the causes of smog on average. At present, there are more than 57 million tons of pollutants emitted by motor vehicles every year in the country, including nitrogen oxides, hydrocarbons, carbon monoxide, and particulate matter. Among them, nitrogen oxides and particulate matter emitted by automobiles exceed 85%, and hydrocarbons and carbon monoxide exceed 70%. In addition, heavy-duty diesel vehicles, which account for less than 20 percent of the car population, emit about 60 percent of nitrogen oxides. Therefore, the control of motor vehicle emissions has become an increasingly urgent task. [0003] In th...

Claims

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Application Information

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IPC IPC(8): B01D53/94B01D53/56
CPCB01D53/9418B01D2258/012
Inventor 韦明
Owner NANNING XIAYANG CHEM TECH CO LTD
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