High-efficiency extraction agent and method for extracting H acid waste liquid

An extraction agent and extraction technology, applied in chemical instruments and methods, extraction water/sewage treatment, natural water treatment, etc., can solve the problems of long H acid production process, high COD in wastewater, and difficult biodegradation, and improve production conversion. efficiency, simple equipment, and easy availability of raw materials

Inactive Publication Date: 2010-07-21
天津能者居工程管理有限公司 +2
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  • Application Information

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Problems solved by technology

However, due to the long production process of H acid, the final product mother liquor contains high-concentration intermediate components, which is one of the most polluted products. Its wastewater has high COD, high chroma, strong acidity and is difficult to biodegrade. Therefore, countries all over the world are looking for solutions to their pollution problems
my country is a big producer of H acid. The export volume of H acid products is very large every

Method used

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  • High-efficiency extraction agent and method for extracting H acid waste liquid
  • High-efficiency extraction agent and method for extracting H acid waste liquid

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Experimental program
Comparison scheme
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Embodiment Construction

[0018] 1. Preparation of extractant:

[0019] Equipment: mixing tank, 500L jacket with stirring, liquid pump, storage tank.

[0020] First take the required raw materials: 130.4Kg of tertiary dodecylamine, 304.3Kg of sulfonated kerosene and 65.2Kg of tributyl phosphate.

[0021] Weigh the above-mentioned materials and pour them into their respective high-level tanks, first add sulfonated kerosene into the mixing tank in order to start stirring, the jacket is heated to 50°C, and then dropwise add dodecyl tertiary amine and phosphoric acid from the high-level tanks Stir for 90 minutes after all the tributyl esters have been added and take a sample for analysis (the content of each component is detected by gas chromatography), after passing the test, leave it to stand down to room temperature, and put it into a storage tank for subsequent use.

[0022] 2. Take H acid production waste liquid pH 1.0, temperature 55°C, press 0.3m 3 At the same time, the extraction agent and H acid...

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Abstract

The invention relates to a high-efficiency extraction agent for extracting H acid waste liquid, which is prepared from the following raw materials in parts by weight: 2-5 parts of complexing agent, 4-10 parts of diluting agent and 0.5-1.5 parts of chaotropic agent, wherein the mixing temperature of the complexing agent, the diluting agent and the chaotropic agent is 25-60 DEG C. The extraction ratio and the back extraction ratio reach more than 99%, and the extraction agent can be recycled. After extraction, the sewage is clear and transparent and can be used as bottom water, dilution water and washing water in production, thereby achieving the purpose of zero discharge of the sewage. The extraction agent has high efficiency and universality in the aspect of extracting mother liquor of H acid products.

Description

Technical field: [0001] The invention belongs to a chemical product, in particular to a high-efficiency extractant and an extraction method for extracting H-acid waste liquid. Background technique: [0002] H acid is one of the important products of naphthalene dye intermediates, and the annual demand in the world is considerable. However, due to the long production process of H acid, the final product mother liquor contains high-concentration intermediate components, which is one of the most polluted products. Its wastewater has high COD, high chroma, strong acidity and is difficult to biodegrade. Therefore, countries all over the world are seeking solutions to their pollution problems. my country is a big producer of H acid. The export volume of H acid products is very large every year, and the domestic demand is also very large. In order to solve the problems of environmental protection and enterprise survival, some domestic research institutions and some large enterpris...

Claims

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Application Information

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IPC IPC(8): C02F1/26C02F103/36
Inventor 赵会兰郭成铁郭庆林王世洪柳凤和门立红
Owner 天津能者居工程管理有限公司
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