How is cottonseed oil made in cooking oil processing factory?

Cottonseed is a by-product of cotton manufacturing process, which can be used to make cooking oil. Its oil content is about 35%. In cooking oil processing factory, there are two kinds of technology which can be used to making cottonseed oil: pressing technology and solvent extraction technology. Here, Doing Company will introduce them for you one by one.

1. How is cottonseed oil made using pressing technology?

Firstly, the cottonseed need delinting treatment. The requirement of the cotton linter content is less than 3%. If your cottonseeds meet the requirement, this process can be skipped.

Secondly, the cottonseeds need to be cleaned by wind separator to remove the impurities.

Thirdly, clean cottonseeds will be cracked by crushing machine, whose purpose is to remove the cottonseeds shell. So after crushing,  the cotton seed kernel and shell separating machine and round play screen are used to separate the cottonseed and shell. Then, you can get clean cottonseed kernels.

 

Fourthly, the cottonseed kernels will be processed by flaking machine. The cottonseed kernels will become flakiness, which will make the oil yield rate increase.

 

Fifthly, flaky cottonseed kernels will be sent into cooking machine to adjust the temperature and moisture, and reach the best condition for pressing.

At last, cooked flaky cottonseed kernels will be put into oil press machine. The cottonseed oil will flow out continuously. This oil is crude cottonseed oil, which should be filtered by leaf filter firstly, and then be sent into edible oil refinery plant to be refined into product oil.

2. How is cottonseed oil made using solvent extraction technology?

Using solvent extraction technology to make cottonseed oil also need pretreat the cottonseeds with some machines. The cleaning, shelling equipment is same as those used in pressing line. In order to improve the effect of solvent extraction, it also can add softening machine and puffing machine to process the cottonseed kernels. 

As for the oil press machine, if using solvent extraction technology, it should be replaced by oil pre-pressing machine, whose residual oil rate is about 15%. Then the cottonseed cakes will be sent to cottonseed oil solvent extraction plant to extract oil out.

Cottonseed oil solvent extraction plant is to use n-hexan to extract the oil from cottonseed cakes, and the final residual oil rate can be less than 1%. The oil you get is also crude cottonseed oil, which must be sent into edible oil refinery plant to be refined into product oil.

The above is the introduction of crude cottonseed oil processing technology in cooking oil processing factory. If you also want to know the crude cottonseed oil refining technology, you can see another article--Cottonseed oil refining process introduction

If you want to make crude cottonseed oil by pressing or solvent extraction technology, or want to refine the crude cottonseed oil into product oil, you can contact us directly.

Learn more:
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Medium & Large Scale Sunflower Oil Press Line from Henan Glory: For Efficient Edible Oil Production

 Henan Glory is a professional manufacturer specializing in edible oil production equipment. We provide medium and large scale sunflower oil press lines to meet the needs of oil mill plants.

1. Our Sunflower Oil Press Line Overview
This sunflower oil press line is designed for medium to large-scale production, with a daily capacity ranging from 10 tons to 1,000 tons. It is suitable for processing sunflower seeds, as well as other high-oil-content oilseeds like peanuts, cotton seeds, rapeseeds, and castor seeds.

 

Key components of the line include:
- Impurity Removal Equipment: Vibrating screen, destoner, magnetic separator work together to clean raw materials by removing dust, stones, and metal impurities.
- Seed Processing Equipment: Cracker, flaking machine, softening pot, cooker prepare oilseeds for pressing by adjusting their structure and temperature.
- Oil Extraction & Storage Equipment: Press machine extracts oil from processed seeds, while leaf filter, oil clarification tank, crude oil storage tank help purify and store the oil.

2. Step-by-Step Working Process
The production of cooking oil from oilseeds involves several sequential steps:

1) Oil Seeds: Start with sunflower seeds (or other selected oilseeds).
2) Cleaning: Remove dirt, small sticks, and other impurities to ensure raw material quality and protect machinery.
3) Cracking: Break seeds into smaller pieces to facilitate subsequent processing.
4) Crushing: Further reduce particle size to increase surface area for better oil extraction.
5) Flaking: Roll crushed seeds into thin flakes to further increase surface.
6) Cooking: Heat and moisturize flakes to adjust texture and temperature (a key step for oil yield).
7) Pressing: Use mechanical pressure to extract oil from cooked flakes.
8) Filtering: Remove fine solid residues from pressed oil to obtain clear crude oil.
9) Crude Sunflower Oil: After filtering, the final cooking oil is ready for use or packaging.

3. Advantages of Our Equipment
- Scalable Capacity: With a daily range of 10–1,000 tons, you can select a configuration matching your production scale.
- Versatility: Suitable for sunflower seeds, peanuts, cotton seeds, etc.—allowing production diversification if needed.
- Proven Process: Follows a mature production flow to help ensure stable oil yield and quality.
- Operational Ease: The process is designed for manageable operation, and we provide guidance for use and maintenance.
- Professional Support: Henan Glory has years of experience in edible oil machinery. We offer equipment selection advice, installation guidance, and after-sales service.

If you're planning a sunflower oil mill or upgrading oil production equipment, reach out to discuss your needs.

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Email: market@doinggroup.com

Official Web:

http://www.cookingoilmillmachinery.com 

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