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Pesticide intermediates with chloroform extraction solvent extraction process

by:Deyuan      2020-09-03
Chloroform extraction pesticide intermediates is chemical enterprise common unit operation, the operation of the traditional technology commonly used distillation column, the operation process is complex, low extraction efficiency, power consumption is big, therefore, with the development of the enterprise, most enterprises begin to technological upgrading, choose a more effective process operation.

with the development of science and technology, solvent extraction has become of the extraction of chemical engineering major operating units. Solvent extraction is to choose suitable extractant, raw material liquid mixed with extraction agent, raw material of organic phase transfer of liquid into the extraction agent, organic phase was extracted after two phase separation. This way is simple, high extraction efficiency, extraction solvent was cheap, extraction solvent can be recycled at the same time, the effective comprehensive cost savings.

solvent extraction of operating equipment generally have extraction, extraction tower, such as centrifugal extraction machine equipment. Compared with other extraction equipment, the unique advantages of centrifugal extraction machine becomes the primary extraction equipment.

the working principle of centrifugal extraction machine has essential difference with the other extraction equipment. Centrifugal extraction machine depend on centrifugal force, according to two phase solution according to certain proportion respectively from two feeding tube into the drum and shell type 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, 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.

in the near future with the customer as pesticide intermediates production enterprises, the need to use chloroform extract pesticide intermediates, traditional process cannot meet the demand of enterprise development, so hope my company for the establishment of the new extraction technology. Combined with the customer information, our company technical personnel for the selected CWL350 - M type centrifugal extraction machine multistage continuous extraction, extraction rate is high, easy operation, low power consumption, large capacity, the real-time effect in the process of equipment operation to get customer's approval.
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