Pretreatment technique of cottonseeds

Abstract

The invention relates to a pretreatment technique of cottonseeds before cottonseeds are leached for oil preparation, comprising the following steps: (1) the mixed cottonseeds are sieved into on-sieve cottonseeds and under-sieve cottonseed powder; (2) feeding cottonseeds into a softening boiler, and feeding softened cottonseeds into a flaking roll so as to roll into cottonseed embryo pieces with the thicknesses of 0.3-0.4mm; (3) feeding the cottonseed powder to tempering equipment, and directly utilizing steam to heat and temper; (4) feeding the tempered cottonseed powder into a granulating machine and obtaining the cottonseed granules; and (5) feeding the cottonseed embryo piece and the cottonseed powder granules into a drier for drying, and then entering next leaching procedure. The pretreatment technique has the advantages that the processing cost is low, the powder degree is low, the leaching effect is good and the crude oil quality is good.

Description

technical field [0001] The invention relates to a cotton kernel pretreatment process before cottonseed leaching for oil production. Background technique [0002] At present, cotton is one of the main economic crops in my country, and its output ranks first in the world. Cottonseed is the seed of cotton. The whole seed contains 10-15% oil, and the cotton kernel contains 20-30% oil. It is one of the nine major oil crops in the world. With the rapid development of China's oil consumption and feed industry, the demand for deep-processed cottonseed products also increases. [0003] In the conventional cottonseed leaching oil production process, the under-screen cotton kernel powder screened out by the plane rotary sieve enters the softening pot together with the cotton kernel on the sieve. After softening treatment, it enters the leaching process through flaking and drying processes. The powdery degree of the embryo is large, which affects the penetration rate of the leaching sol...

AI Technical Summary

Problems solved by technology

[0003] In the conventional cottonseed leaching oil production process, the under-screen cotton kernel powder screened out by the plane rotary sieve enters the softening pot together with the cotton kernel on the sieve. After softening treatment, it enters the leaching process through flaking and drying processes. The powdery degree of the embryo is large, which affects the penetration rate of the leaching solvent in the material layer, which often causes difficulty in leaching and affects the leaching effect. The resulting crude oil has high impurity content and poor quality. Poor heating effect, uneven heating