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Cationic surfactant micro-bubble absorption liquid for efficiently purifying black smoke and preparation method thereof

A surfactant and absorbent technology, which is applied in the field of cationic surfactant microbubble absorbent and its preparation, can solve the problems of high cost and easy generation of foam, and achieve non-corrosive, less foam and simple preparation method Effect

Inactive Publication Date: 2011-08-24
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the disadvantages of foaming and high cost when using the existing absorbing liquid, a low-cost, microbubble absorbing liquid and its preparation method for efficiently purifying carbon black in black smoke are provided

Method used

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  • Cationic surfactant micro-bubble absorption liquid for efficiently purifying black smoke and preparation method thereof
  • Cationic surfactant micro-bubble absorption liquid for efficiently purifying black smoke and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation of the microbubble type absorbent liquid of the present invention:

[0024] At 25°C, first dissolve 5g of cetyltrimethylammonium bromide in 1000g of water, and then add 3g of linear para-dodecylbenzenesulfonate, 30g of sodium chloride or sodium sulfate, Add 9g of ethanol in sequence according to the above ratio, and mix evenly.

[0025] Use an umbrella-type dust collector at a carbon black concentration of 5000mg / m 3 , The liquid-gas ratio is 0.4L / m 3 1. Under the condition that the superficial gas velocity is 3.5m / s, the removal efficiency of carbon black in black smoke is 99.2%.

Embodiment 2

[0027] The preparation of the microbubble type absorbent liquid of the present invention:

[0028] At 28°C, first dissolve 7g of cetyltrimethylammonium bromide in 1000g of water, and then add 5g of linear para-dodecylbenzenesulfonate, 40g of sodium chloride or sodium sulfate, 10g of ethanol was added in sequence according to the above ratio, and mixed evenly.

[0029] Use an umbrella-type dust collector at a carbon black concentration of 5000mg / m 3 , The liquid-gas ratio is 0.4L / m 3 1. Under the condition that the superficial gas velocity is 3.5m / s, the removal efficiency of carbon black in black smoke is 99.5%.

Embodiment 3

[0031] The preparation of the microbubble type absorbent liquid of the present invention:

[0032] At 30°C, first dissolve 10g of cetyltrimethylammonium bromide in 1000g of water, and then add 7g of linear para-dodecylbenzenesulfonate, 55g of sodium chloride or sodium sulfate, Add 15g of ethanol in sequence according to the above ratio, and mix well.

[0033] Use an umbrella-type dust collector at a carbon black concentration of 5000mg / m 3 , The liquid-gas ratio is 0.4L / m 3 1. Under the condition that the superficial gas velocity is 3.5m / s, the removal efficiency of carbon black in black smoke is 99.0%.

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Abstract

The invention relates to the technical field of environmental protection, in particular to purification of carbon black in black smoke through a wet method in the atmospheric pollution control direction, particularly cationic surfactant micro-bubble absorption liquid and a preparation method thereof. The micro-bubble absorption liquid is prepared by dissolving a cationic surfactant serving as a principle component and anion, inorganic salt and a solubilizing agent in water in a ratio in turn. The absorption liquid has readily available raw materials, is low in cost, simple in preparation method and high in water-solubility, has no corrosion, can be recycled, produces less foam during use, has the efficiency of removing the carbon black in the black smoke in a coal-fired furnace of over 99 percent, and is suitable for black smoke emission enterprises on various scales.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to wet purification of carbon black in black smoke in the direction of air pollution control, in particular to a cationic surfactant microbubble type absorption liquid and a preparation method thereof. Background technique [0002] my country's energy structure is dominated by coal, accounting for about 75% of the total energy structure. my country is still a large ceramics production country with a large number of coal-fired ceramic kilns (according to statistics, the annual energy consumption of the ceramic industry alone is equivalent to tens of millions of tons of standard coal. ), and mainly small and medium-sized enterprises, the production scale is small, the combustion technology level is not high, and the coal cannot be completely burned, and the incomplete combustion of coal will produce a lot of black smoke. The main components of black smoke are carbon bl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D47/00
Inventor 路培李彩亭赵亚培周杨鑫曾光明李珊红
Owner HUNAN UNIV
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