A kind of highly concentrated evaporation method

Abstract

The invention discloses a high-concentration evaporation method, which comprises the following method steps, a, firstly adding a neutral salt and an organic solvent into the concentrated solution to make the active ingredient into a precipitate, and removing the insoluble matter through centrifugation to obtain the supernatant ; b, put the supernatant into the ultrafiltration device, inject inert gas nitrogen, and keep the air pressure at 5.05×10 5 Under the pressure of Pa, use a filter membrane to fully filter it, and put it into a dialysis bag; c, bury the dialysis bag in step b in a mixture of polyethylene glycol and glycerin with strong water absorption, and perform dehydration ; d, the treated solution is sent to a rotary evaporator for evaporation and concentration; e, and finally the solution is concentrated by vacuum centrifugation. The patent of the present invention uses a combination of physical and chemical methods to carry out concentration and evaporation, adopts multiple concentration and evaporation, and can remove impurities mixed in the solvent, the overall processing efficiency is high, and it is more environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of concentrated evaporation, in particular to a high concentration evaporation method. Background technique [0002] Concentration refers to the evaporation of the solvent to increase the concentration of the solution, and generally refers to the reduction of the undesired part and the increase of the relative content of the required part. Mainly used in chemical industry terms, in the chemical raw material industry, concentration is the operation process of removing part of the solvent (usually water) from the solution, and also the part of the separation process of the uniform mixture of solute and solvent. Concentration can remove a large amount of water in chemical raw materials, reduce the quality and volume, and reduce the cost of packaging, storage and transportation of chemical raw materials; concentration can increase the concentration of products, increase osmotic pressure, reduce water activity, i...

AI Technical Summary

Problems solved by technology

However, the material will lose some flavor or nutrients during the concentration process, so it is very important to choose a reasonable concentration method and suitable conditions

[0003] At present, the traditional concentration evaporation has low processing efficiency, and more impurities will be mixed in the concentration process, which will affect the overall purity. In view of the above problems, here we propose a high concentration evaporation method