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Organic phase using methylene chloride extraction solvent extraction process

by:Deyuan      2020-09-02
In the pharmaceutical enterprise production process, using methylene chloride extraction organic phase is a common unit operation. Methylene chloride extraction organic phase is solvent extraction operation principle.

solvent extraction is a two phase density difference, and each other immiscible two-phase liquid, choose the corresponding extraction agent, through the use of centrifugal extraction machine, the extracting agent mixed with raw material liquid, liquid materials in the organic phase transfer to the extraction agent, rely on centrifugal two-phase liquid separation, in order to pick up the organic phase. Using solvent extraction to extract organic phase the advantage of simple operation process, the extraction agent, and can be recycled, high extraction efficiency, is the common way of extraction.

pharmaceutical enterprise organic phase were extracted with dichloromethane, traditional equipment is to choose the reaction kettle, but its operating troubles, extraction time, extract and entrainment, therefore, with the development of technology, more and more pharmaceutical enterprises begin to technological upgrading, extraction with centrifugal extraction machine to operate.

centrifugal extraction machine compared with the traditional extraction equipment, the working principle of the distinction that having essence. Centrifugal extraction machine is rely on centrifugal force role the two phase fluid for rapid mixing, mixing and mass transfer speed, high extraction efficiency. Centrifugal extraction machine large quantity at the same time, low power consumption, can be suitable for a variety of material system operation; Equipment materials can choose whole fluorine material, resistant to strong acid corrosion.

dichloromethane extraction organic phase using centrifugal extraction machine concrete operation process:

with methylene chloride solution containing organic phase of two-phase according to certain proportion respectively from two feeding tube into the drum and shell type ring gap formed between the mixing 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.

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.
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