Plant solvent extraction to extract the compositae safflower extraction equipment
days M type centrifugal extraction solvent extraction method to extract safflower, generally considered effective ingredients extracted from traditional Chinese medicine, extraction solvent is water and ethanol, but different extraction solvent can affect the extract rate and extraction yield of Chinese medicine, therefore need to solvent were investigated. This experiment choose water and different concentrations of ethanol as solvent, soaking safflower 30 min, under the condition of 80 ℃ warm immersion 2 times, each time for 20 min, and a solvent times measure for 12 times, 10 times the amount of measurement indicators, the results show that when the extraction solvent is ethanol, along with the increase of the ethanol volume fraction in extract of safflower yellow pigment mass concentration is reduced, instead that ethanol is not safflower yellow flower pigment extraction solvent, extraction and ethanol into fat-soluble impurities is more, will cause a lot of unnecessary trouble, subsequent processing so choose water as extraction solvent. . cwl - M type centrifugal extraction machine solvent extraction method by solvent extraction of safflower extraction principle
some of which were extracted from liquid mixture operation known as liquid/liquid extraction. Centrifugal extraction machine extraction is the use of components selected in the solution of the differences in the solubility of solvent, the solute of liquid-liquid mass transfer, in order to achieve the separation of homogeneous liquid mixture operation. Raw material liquid mixed with the extracting agent fully contact, complete the solute mass transfer process;
weight according to certain proportion respectively from two two phase solution and feeding tube into the drum shell ring gap formed between the mixed zone, with the aid of the rotation of the drum, through the turbine disc and the impeller to make two phase mixing and dispersing quickly, two phase solution fully mass transfer. Complete mixing and mass transfer process. Extraction and extraction residual phase separation process;
mixture under the action of vortex disk into the rotary drum, in the plate to form the bulkhead area, mixture quickly with synchronous rotary drum, in under the action of centrifugal force, the heavier than major phase fluid in the process of upward mobility and gradually away from the drum center on the drum wall; Small proportion of liquid phase gradually away from the drum wall and on to the center, after clarification of two phase fluid end respectively through their weir plate into the collection chamber and the tube was closed to derivation, respectively, to complete two phase separation process. From the extraction phase and extraction phase extractant recycling process.
usually use the method of distillation recycling extracting agent. Removal after extraction of proportion as the extractant extract; After removal from the extraction agent over extraction of proportion of extraction liquid.
2. CWL - The characteristics of M type centrifugal extraction machine:
(1) to adapt to the strong performance - — Compared with the traditional van and extraction tower equipment, under the effect of centrifugal force, the remaining time is short, split phase quickly, to adapt to the wide range of flow ratio, and processing power; By changing the weir plate and frequency control of motor speed can meet the different density and viscosity of liquid materials;
2 material stock of small - — Two-phase material stock in the equipment is small, short contact time, more suitable for processing because of long time volatile activity and variability of materials such as antibiotics, etc. , of course, individual system needs two phase together contact time long also can operate separately.
(3) high extraction efficiency - — Phase equilibrium set up fast, easy to implement series single stage or multistage counter-current or wrong washing and extraction, high mass transfer efficiency and grade efficiency approaching 100%, stop not to undermine the established after concentration distribution at different levels, can at any time at all levels of sampling, facilitate testing.
(4) to take up the space is little, — Motor direct drive, no transmission attachments, compact structure, save area and operating space, less auxiliary equipment.