Cottonseed crude oil purification device and process by leaching method

Abstract

The invention relates to a purification device and process for crude cotton seed oil produced by a leaching process. The purification device comprises a preheater, a spraying unit and a vacuumizing unit which are sequentially communicated, wherein the spraying unit is composed of a tower and a spraying drum thereon, a wire mesh shaped filler is arranged in the spraying drum, a spraying nozzle is arranged at the upper end, and a gas extraction tube is arranged at the top; a heating coil is arranged in the tower; a trapper is arranged between the spraying unit and the vacuumizing unit; the vacuumizing unit is composed of a jet pump, a negative-pressure pump head thereof and an anti-scour liquid separation box; and the preheater is communicated with a gas exhaust outlet of the heating coil in the tower. Crude cotton seed oil obtained by a leaching process is sequentially subjected to the processes of preheating, spraying negative-pressure separation, grease trapping, gas exhaust and solvent collection, so that the crude oil is purified. Thus, the peculiar smell of the crude oil can be removed, and organic solvent in the crude cotton seed oil produced by a leaching process can be further separated. The purification device and process have the advantages of favorable vacuumizing effect, low negative pressure value, energy saving, thorough grease deodorization and high work efficiency.

Description

technical field [0001] The invention belongs to the field of oil chemical industry, and relates to an oil processing device and process, in particular to a cottonseed crude oil purification device and process by leaching method. Background technique [0002] Cottonseed ranks second in world oilseed production, second only to soybeans. Cottonseed oil is currently ranked No. 5 in the world's edible oils, because about 16% of cottonseed is used as feed. Whole cottonseed contains 15%-25% oil, cotton kernel contains 32%-46% oil, and contains about 30% protein. It is an important oil resource and vegetable protein resource. Cottonseed oil contains 60%-90% unsaturated fatty acids (linoleic acid and oleic acid), which can lower cholesterol and prevent arteriosclerosis. It is an important edible vegetable oil. [0003] However, since cottonseed crude oil contains more than 2% of non-glyceride components such as gossypol, phospholipids, and fatty acids, which affect the flavor and s...

AI Technical Summary

Problems solved by technology

[0006] Traditional stripping and deodorization is usually completed in the refining workshop. Due to the influence of insufficient vacuum, higher temperature and larger distillation equipment are often required.

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