Production method of triethylamine extracted from waste liquid by batch distillation method

Abstract

The invention relates to a production method of triethylamine extracted from a waste liquid by a batch distillation method. After a water-bearing waste liquid generated when an aluminum silicate zeolite is produced by taking the triethylamine as a template agent is separated and extracted by the method provided by the invention, the triethylamine can be reused, the batch distillation method is adopted, the cohobation ratio and the tower bottom temperature are controlled, the extracted liquid is cooled and layered, a lower liquid is carried out reflux operationes, and an upper liquid is recycled into a finished product storage tank, so that the water content of the finished product is less than 1.5%, and the product is measureddetermined by a trace water analyzer. The main equipment comprises a distillation column, a condenser, a demixer and the like.

Description

technical field

[0001] 1. The present invention belongs to the industrial production technology of reducing waste liquid, purifying triethylamine, and reusing industrial waste liquid containing a large amount of water and an organic solvent with a boiling point of <85° C. in triethylamine. Production practice has proved that the technology is reliable. It is characterized in that the composition is i: H2O 5-45% diethylamine 1-2.5% triethylamine 75-46% ethanol 0.1-0.3%. After rectification, the distillate at the top of the tower is: triethylamine 96——98.5% diethylamine 2——5% ethanol 0.2———0.5% water<1.5% Background technique

[0002] The method of dehydration and purification treatment of triethylamine with a water content of <3% is industrially using caustic soda as a dehydrating agent to absorb water to obtain triethylamine with a water content of 0.5-1%. The triethylamine waste liquid with a water content of more than 5% uses the above The method is wasteful to ...

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