Dewaxing process for vegetable oil by waste clay and spent carbon

Abstract

The invention provides a vegetable oil dewaxing process by using waste clay and waste activated carbon, which belongs to a process used in producing vegetable oil. The process is that the vegetable oil which is processed decolorizing treatment is heated. The separated clay, active carbon and vegetable oil after being processed decolorizing treatment are mixed together. After mixed, the mixture is sent into a bleaching tower to be absorbed. The materials formed after being processed absorption are pumped into a crystallizer to be crystallized. The crystallized materials are sent into a segregator to be separated. The vegetable oil is separated. The dewaxing process uses the separated clay and active carbon after being processed decolorizing treatment. The clay and the active carbon are reused. Diatomite and perlite are not needed to be added to be as the filter aid in the dewaxing process. The consumption cost of the filter aid is saved, and so the production cost of the vegetable oil can be greatly reduced. The dewaxing effect is good.

Description

technical field [0001] The invention provides a process in vegetable oil production, especially a dewaxing process. Background technique [0002] In the process of vegetable oil production, it is necessary to dewax the vegetable oil to improve the quality of vegetable oil. The current decolorization and dewaxing processes are carried out separately, that is, firstly, clay and activated carbon are used as decolorizing agents for decolorization, and then the clay and activated carbon are separated from the decolorized vegetable oil. Add diatomaceous earth and perlite to the decolorized vegetable oil as filter aids for dewaxing treatment, and finally separate the dewaxed vegetable oil. This dewaxing process requires new additions of filter aids, which increases production costs. During the separation process after decolorization, because part of the vegetable oil is mixed in clay and activated carbon, this will cause about 0.3-0.5% loss of vegetable oil. And this separation ...

AI Technical Summary

Problems solved by technology

In the separation process after decolorization, because part of the vegetable oil is mixed in clay and activated carbon, it will cause about 0.3-0.5% loss of vegetable oil

Moreover, this separation process requires a large amount of steam, electric energy, and labor consumption, which increases the production cost.