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

A technology of triethylamine and waste liquid, which is applied in the purification/separation of amino compounds, can solve the problems of wasteful recovery of triethylamine and the inability to recycle alkali metal waste liquid, and achieve the effect of reducing production costs

Inactive Publication Date: 2012-05-09
阎成华
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[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 It is wasteful to recycle triethylamine by the method, and the alkali metal waste liquid containing impurities cannot be recycled

Method used

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

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Embodiment approach

[0009] 2 implementation plan {1} flow chart

[0010] {2}Main equipment: a rectification tower b condenser 1 c condenser 2 d stratifier 1 e stratifier 2 f product storage tank 1, 2 f dosing pump

[0011] 3 operation method

[0012] A Open the liquid feeding pump and open the valve [13] When the liquid in the rectification column is added to 85% of the volume, stop the pump and close the valve [13]

[0013] B starts the heat transfer oil circulation pump, the heater sends electricity to raise the temperature, and the vent valve on the top of the tower is opened. When the temperature at the bottom of the tower reaches 54°C, close the vent valve and open the reflux valve [2] when the temperature at the bottom of the tower reaches 60---64°C, open the valve [5] valve [6] to take the liquid into the stratifier 1, when the liquid level reaches 3 / 4 o'clock close the valve [6] open the valve [7] stratifier 1 liquid static 35-50 minutes, layering. Open the valve【8】return valve【3】to ...

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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 ...

Claims

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Application Information

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IPC IPC(8): C07C211/05C07C209/84
Inventor 阎成华
Owner 阎成华
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