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Treatment method of triethylamine-containing sewage

A treatment method and technology of triethylamine, applied in heating water/sewage treatment, oxidized water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of difficult to obtain satisfactory yield and harsh conditions, and achieve effective Recycling, simple preparation process, and the effect of alleviating pollution

Active Publication Date: 2012-08-08
深圳科冠华太新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Studies have shown that in the method of preparing diethylhydroxylamine by oxidation of diethylamine, the conditions are harsh and it is difficult to obtain a satisfactory yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add the processing raw material containing about 1mol of triethylamine into a 1000mL three-neck flask equipped with a condenser, electric stirring and constant pressure dropping funnel, slowly add an appropriate amount of 28% H 2 o 2 (Its mol ratio with triethylamine feed intake is 2.5), and the rate of addition is 1d / S. After standing overnight at room temperature, heat the water bath to 70°C, and reflux until the red color of the phenolphthalein detection reagent disappears completely. After cooling down and removing water under reduced pressure, add 4g of potassium hydroxide, and heat the oil bath to 130°C until there is no more distillate. , The distillate was statically divided into two layers. After extracting the lower organic layer with ether, the ether layer was combined with the upper layer, dried over anhydrous magnesium sulfate, and after distilling off the ether, diethylhydroxylamine was obtained by vacuum distillation (128°C, 84.2kPa).

Embodiment 2

[0020] Add the processing raw material containing about 1mol of triethylamine into a 1000mL three-neck flask equipped with a condenser, electric stirring and constant pressure dropping funnel, slowly add an appropriate amount of 28% H 2 o 2 (Its mol ratio with triethylamine feed intake is 1.8), and the rate of addition is 1d / S. After standing overnight at room temperature, heat the water bath to 68°C, and reflux until the red color of the phenolphthalein detection reagent disappears completely. After cooling down and removing water under reduced pressure, add 4g of potassium hydroxide, and heat the oil bath to 160°C until there is no more distillate. , The distillate was statically divided into two layers. After extracting the lower organic layer with ether, the ether layer was combined with the upper layer, dried over anhydrous magnesium sulfate, and after distilling off the ether, diethylhydroxylamine was obtained by vacuum distillation (128°C, 84.2kPa).

Embodiment 3

[0022] Add the processing raw material containing about 1mol of triethylamine into a 1000mL three-necked flask equipped with a condenser, electric stirring and constant pressure dropping funnel, slowly add an appropriate amount of 30% H 2 o 2 (Its mol ratio with triethylamine feed intake is 1.8), and the rate of addition is 1d / S. After standing overnight at room temperature, heat the water bath to 65°C, and reflux until the red color of the phenolphthalein detection reagent disappears completely. After cooling down and removing water under reduced pressure, add 5g of potassium hydroxide, and heat the oil bath to 80°C until there are no more distillates. , The distillate was statically divided into two layers. After extracting the lower organic layer with ether, the ether layer was combined with the upper layer, dried over anhydrous magnesium sulfate, and after distilling off the ether, diethylhydroxylamine was obtained by vacuum distillation (128°C, 84.2kPa).

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Abstract

The invention relates to a treatment method of triethylamine-containing sewage. In the method, after an oxidant is added to the sewage, triethylamine in the sewage is converted into diethyl hydroxylamine through oxidation, catalytic pyrolysis, separation and purification so as to recycle the triethylamine in the sewage. The treatment method of the invention is also suitable for treating the sewage mainly containing the triethylamine, and the method has the advantages of simple preparation process and high product purity; the adopted oxidant is pollution-free and environmental-friendly; and the method can help solve environmental protection problem caused by the sewage and produce high added-value chemical products.

Description

technical field [0001] The invention relates to a sewage treatment method, in particular to a treatment method for sewage containing triethylamine. Background technique [0002] Some industrial sewage that produces a large amount of organic amines in chemical production, the current better treatment method is to make the organic amines in the sewage catalyzed, oxidized, and completely ammonified under low-temperature alkaline conditions---inorganization and chemical nitrification It is converted into nitrogen gas and escapes from the water under steps such as denitrification. CN1234373A discloses a treatment method for removing triethylamine and other amines contained in waste water by ozone oxidation, the reaction products of which are nitrogen, carbon dioxide and water. It can achieve the purification of waste water containing triethylamine and other amine substances. These methods can achieve the purpose of removing ammonia nitrogen, but cannot effectively recycle organ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/10C07C239/10C02F1/72C02F1/02C02F101/38
Inventor 吴宗斌吕志辉
Owner 深圳科冠华太新材料技术有限公司