A kind of method for proportional evaporation of eucommia gum extract

Abstract

The invention discloses a method for proportionally evaporating a gutta-percha extract, which comprises the following steps: passing a gutta-percha petroleum ether extract through a flowmeter into a climbing-film long tube evaporator, carrying out ultrasonic oscillation and heating in the climbing-film long tube evaporator, regulating the ultrasonic power and heating power according to the flow rate, and carrying out gas-liquid separation with a cyclone separator, thereby proportionally evaporating and concentrating the gutta-percha extract. By combining the climbing-film long tube evaporation with the ultrasonic oscillation, the method is simple, and has the advantages of low tendency to blockage and favorable effect; the cyclone separator has favorable separating effect, and is simple and reliable; and the heating power is controlled through the flow rate, so the method is simple and reliable, has strong operability, and is convenient to implement. The method provides powerful technical support for low-energy-consumption low-dissolution-consumption continuous two-stage leaching of high-quality gutta-percha.

Description

technical field [0001] The invention relates to a method for evaporating a solvent from an extract of eucommia gum according to a certain ratio. Background technique [0002] Dugong gum, known internationally as gutta-percha or Balata, is an isomer of natural clover rubber, which is trans-polyisoprene. Eucommia gum can be used as medical materials, rubber products, etc. through vulcanization and modification, and can also be blended with other materials to obtain blended materials. The application prospect is very broad. [0003] Eucommia gum is easily soluble in non-polar solvents such as petroleum ether. After extraction with non-polar solvents such as petroleum ether, the crystals of Eucommia gum can be separated by cooling and freezing. It is found in the research that the solvent after freezing is leached once. The second leaching with the evaporated and condensed solvent has a particularly superior leaching performance, which can achieve low energy consumption, good q...

AI Technical Summary

Problems solved by technology

[0004] In order to realize the continuous operation of the above operations and the low-energy circulation of the solvent, the key is to concentrate and evaporate the Eucommia gum extract in a certain proportion, and to separate the gas-liquid phase after the concentration and evaporation, and to perform proportional evaporation instead of total evaporation of the solvent, which can save energy. Steam can also reduce the loss of solvent, and at the same time avoid the retention of ether-soluble impurities in the glue caused by evaporation, causing the impurities in the glue to exceed the standard and affecting the quality; however, the processing of Eucommia series belongs to a new industry, and there are few mature experiences and technologies that can be used for reference. The technology cannot meet the needs of the eucommia gum solution to be evaporated and concentrated in proportion and the gas-liquid phase separation after concentration and evaporation, so the existing technology cannot meet the requirements of the industrial operation of eucommia gum