Rapeseed oil makes large proportion of edible oil market.Rapeseed oil has many food applications. As a salad oil, it is used in mayonnaise, salad dressings, sauces, and marinades. As a cooking oil, it is used for frying in both commercial and home cooking. Rapeseedoil is extracted from cottonseed with Rapeseed Oil Extraction Machine.
1. Rapeseed oil pre-press line ：
A. Flow Chart:
Rapeseed→Cleaning →magnetic separator →metering →conditioning→flaking→ pre-pressing→ cake for extraction and crude oil directly for refinery
B. Points for cottonseed oil prepress plant :
♦ Magnetic separator, vibrating screen ,destoner are used to remove different impurities inside cottonseeds depending on different specific gravity.
♦ Cooking is preparing for pre-press, normally is about 30minutes, 105-110℃
♦ Pre-pressing only part of cottonseed oil, which will save energy consumption.
2.Rapeseed oil extraction line:
A. Flow chart
Pre-pressed oil cake → Extraction →wet meal → desolventizer →Cooling → dry meal for animal feed
Mixed oil →filter → evaporation →Crude oil
B. Points for Rapeseed oil extraction plant
♦ Oil extraction is using solvent to extract oil from oil cake inside oil extractor, which has many different types: loop type oil extractor, rotocel oil extractor, towline oil extractor etc.
♦ Oil extraction is no smoking area, all the machines especially motors are anti-explosion.
♦ Wet meal will be dried and separated with solvent inside desolventizer , the dried meal will be packaged for sale.
♦ Mixed oil is separated with solvent by multi-effective evaporation, which has normal evapoaration and negative pressure evaporation , negative pressure evaporation is saving more energy.
♦ We offer deep processing technology of degossypolized cottonseed protein, please contact us for more information.
3.Rapeseed oil Refinery line:
Degumming →Deacidification →Decoloration → Deodorization →edible oil
B. Points for cottonseed oil refining plant
♦ Rapeseed oil refinery can be divided into batch refining (<20t/d), semi-continuous refining (20-50 t/d) and continuous refining (>50 t/d) depending on capacity. For 30-50 t/d , you also can choose continuous refining as your own requirement.
♦ For new harvest rapeseed , the acid value of crude oil is lower and the color is lighter , which is easier for oil refinery. If raw cottonseed is not in good quality after long storage, the acid value will be much higher and color is deeper, then maybe need twice alkali refining .
♦ Winterisation is optional depending on your requirement.
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