Animal oil refining equipment

Animal oil refining equipment

In the process of crude extraction of animal fat, if properly treated, the obtained oil products can be used without further treatment. However, in production practice, due to a series of reasons such as blood stains left in tuzhai, the acid value of the obtained products is too high or there are impurities such as collagen. Therefore, these animal oils need to be further refined when they are consumed. There are degumming, deacidification, decolorization, deodorization and other steps in the refining of edible animal fat.

Process Description:

Degumming: the purpose of degumming is to remove colloidal impurities in crude oil, mainly some protein, phospholipid and mucinous substances. At present, the main method is hydration degumming.

Decolorization: the purpose of decolorization is to remove the pigment components in oil. Decolorization is achieved by adsorption decolorization method, which is completed by adding activated clay. A small amount of activated carbon can also be added. They can absorb pigment and some oil degradation products.

Deacidification: due to the high acid value of animal fat after boiling, it does not meet the health standard of animal fat, so deacidification treatment is needed. Physical deacidification by steam distillation is used in animal oil refining equipment.

Deodorization: deodorization is to remove the decomposition products of pollutants and raw protein mixed with the outside in the process of processing, and remove the aldehydes, ketones, low-grade acids, peroxides and other odor substances produced by the oxidation and rancidity of oil. The process is completed in the combined deacidification and deodorization tower together with the deacidification process.

Process flow: crude oil → hydration degumming → water washing → drying → dry degumming → decolorization → filtration → deoxidization → heat exchange → heating → physical deacidification → delayed decolorization → heating → deodorization → heat exchange → cooling → product oil