Trimethyl-pyrazine is a chemical that can be used as a cream flavor or as a flavoring for coffee, cocoa, chocolate, peanut, sesame oil, etc. This substance naturally exists in baked products, roasted barley, peanuts, potato products and other foods. At present, the extraction method of trimethypyrazine is dichloromethane extraction, which is also a common extraction method in perfume factories.

Dichloromethane, colorless transparent liquid, insoluble in water, soluble in ethanol and ether, is incombustible low boiling solvent. It is often used as an extractant.

When dichloromethane extracts trimethypyrizine, a centrifugal extraction machine is used for operation. The raw material liquid and dichloromethane are injected into the centrifugal extraction machine in a certain proportion. With the help of the rotation of the drum, the two phases are rapidly mixed and dispersed through the impeller to complete the mixing mass transfer process. The mixed liquid enters the rotating drum under the action of vortex disc. Under the action of centrifugal force, the two-phase liquid rapidly separates and exits the body through different outlets to complete the two-phase separation process.

Working principle of centrifugal extractor

1. Mixed mass transfer process -- the light and heavy two-phase solution enters the annular mixing zone formed between the drum and the shell respectively in a certain proportion from the two feeding pipe orifice. By means of the rotation of the drum, the two-phase solution can be rapidly mixed and dispersed through the turbine disc and impeller, and the two-phase solution can be fully mass transferred. Complete the mass transfer process.

2. Two-phase separation process -- the mixed liquid enters the drum under the action of the vortex disc. In the compartment formed by the plate, the mixed liquid quickly synchronously rotates with the drum. The light phase liquid with small specific gravity gradually moves away from the drum wall and toward the center. The clarified two-phase liquid finally enters the collection chamber through the weir plate and is drawn out of the machine by the guide tube, completing the two-phase separation process.