Alkaline powder for treating leaked hydrochloric acid and acid mist thereof and preparation method of alkaline powder

A powder and alkaline technology, which is applied in the field of emergency response to the leakage of acidic dangerous chemicals, can solve the problems of lack of effective methods for neutralizing the end point, white smoke polluting the environment, forming small white lumps, etc., and is easy to clean or be removed by a vacuum cleaner, The effect of good settling performance and simple preparation method

Active Publication Date: 2014-08-06
ENG DESIGN & RES INST OF GENERAL ARMAMENTS DEPT +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The neutralization method mainly uses quicklime and other alkaline substances for neutralization reaction to eliminate the acidic components in the liquid. First, this method is easy to produce a large amount of white smoke to pollute the environment. The third is the lack of an effective method for judging the neutralization end point, so it is only suitable for the disposal of a small amount of hydrochloric acid leakage
In September 2012, a hydrochloric acid transport truck in Yiwu, Zhejiang Province crashed on the way, and more than ten barrels of hydrochloric acid leaked. At that time, quicklime was mainly used. to clear
However, current research articles and patent applications have failed to systematically address these issues.

Method used

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  • Alkaline powder for treating leaked hydrochloric acid and acid mist thereof and preparation method of alkaline powder

Examples

Experimental program
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Effect test

Embodiment 15

[0041] Example 15L concentrated hydrochloric acid (38%, about 6kg) leakage and its acid mist disposal

[0042] Prepare 10kg of alkaline powder for disposal of hydrochloric acid leakage, and its component distribution ratio is 6.3kg of neutralizer (5.25kg of sodium bicarbonate, 0.92kg of carbide slag, 0.13kg of sodium hydroxide), 3.0kg of auxiliary agent (diatomaceous earth) , Volatility inhibitor 0.005kg (sodium dodecylbenzene sulfonate); Moisture-proof agent 0.53kg (polyacrylamide with a molecular weight of 10 million); Dispersant 0.163kg (sodium stearate); Indicator 0.002kg (bromopercent Liphenol blue).

[0043] The specific preparation method is to add clear water (about 10 L) that can just dissolve the neutralizing agent and auxiliary agent in the reaction tank, start stirring, and mix a certain dose of auxiliary agent, neutralizing agent and volatilization inhibitor (10% in excess each) in proportion Add in order, stop stirring after stirring evenly, let it stand for 10 ...

Embodiment 220

[0045] Embodiment 220L hydrochloric acid (20%, about 22kg) leakage disposal

[0046] Prepare 26kg of alkaline powder for disposal of leaked hydrochloric acid and its acid mist, its composition ratio is: neutralizer 12.7kg (sodium bicarbonate 10.6kg, carbide slag 1.8kg, sodium hydroxide 0.3kg), auxiliary agent 10.6kg (diatomaceous earth); volatilization inhibitor 0.22kg (sodium dodecylbenzene sulfonate), moistureproof agent 2.14kg (sodium polyacrylate), dispersant 0.33kg (sodium stearate), indicator 0.01kg (methyl red). The specific preparation method is to add clear water (about 22 L) that can just dissolve the neutralizing agent and auxiliary agent in the reaction tank, start stirring, and mix a certain dose of auxiliary agent, volatilization inhibitor and neutralizing agent (10% in excess each) in proportion Add in order, stop stirring after stirring evenly, let it stand for 10 hours (overnight), and then send it to dry under reduced pressure, then grind and sieve, and pres...

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Abstract

The invention provides alkaline powder for treating leaked hydrochloric acid and acid mist of the leaked hydrochloric acid and a preparation method of the alkaline powder. The alkaline powder is prepared from a neutralizer, an aid, a volatilization inhibitor, a moisture-proof agent, a dispersant and an indicator in a certain ratio by a specific method. The raw materials for preparing the alkaline powder are readily available, wherein a part of raw materials are reutilized wastes; the preparation method is simple, convenient and low in energy consumption; and the prepared powder has good moisture-proof performance, does not cake, and has good settling performance after being sprayed. The alkaline powder can be used for effectively treating the leaked sulfuric acid of which the concentration is 20 to 38 percent or more, can inhibit the volatilization of the hydrochloric acid and arrest the acid mist gas generated by the leaked hydrochloric acid, has the advantages of high neutralizing speed, simplicity and convenience in endpoint judgment and the like, and can effectively inhibit the volatilization of the hydrochloric acid gas; and the residue after the treatment is grey, loose and easy to clean or is easily sucked by negative pressure.

Description

technical field [0001] The invention relates to the field of emergency treatment for leakage of acidic dangerous chemicals, in particular to an alkaline powder for treating leakage of hydrochloric acid and its volatile acid mist and a preparation method thereof. Background technique [0002] Hydrochloric acid is an important raw material for chemical production. It is often used to prepare chemical products such as metal chlorides, aniline and fuels, and is widely used in metallurgy, petroleum, printing and dyeing, leather, food, medicine, electroplating and other industrial and scientific research departments. [0003] Hydrochloric acid, also known as hydrochloric acid, is a monobasic strong acid obtained by dissolving hydrogen chloride gas in water. It is extremely volatile. The volatilized hydrogen chloride gas is not only strongly irritating, but also easily combines with water vapor in the air to form hydrochloric acid. fog. Therefore, if hydrochloric acid leaks during...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D3/36A62D101/49
Inventor 张统王守中董春宏陈宜俍方小军郭士岭邵志元
Owner ENG DESIGN & RES INST OF GENERAL ARMAMENTS DEPT
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