Complete cotton seed oil processing plant

The complete cotton processing plant includes cottonseeds pretreatment and pressing workshop, cottonseed cake solvent extraction workshop and crude cottonseed oil refinery workshop. There are two main extraction methods of cottonseed oil: one is the pretreatment pressing method, and the other is the solvent extraction method. Different extraction methods use different cotton seed oil processing machine, so this article will introduce the complete cotton seed oil processing plant.

Pretreatment pressing method

The process of producing cottonseed oil by pretreatment pressing is to obtain cottonseed oil from cottonseed by mechanical squeezing.

The process of producing cottonseed oil by pressing includes the following steps: cottonseed pretreatment, cottonseed oil pressing and cottonseed oil refining. The purpose of cottonseed pretreatment is to clean up impurities in cottonseed, adjust the moisture, temperature and internal structure of cottonseed, so that cottonseed can reach a good state before pressing, improving the production efficiency of cottonseed oil.

The pre-treatment machine used in cotton seed oil processing plant includes cleaning machine, shelling machine, wind separator, flaking machine, cooking machine, and a series of other machines. Next, the cotton seed oil pressing machine are used to press the treated cottonseed. Cottonseed oil is filtered through a filter to remove impurities and obtain cleaner crude oil.

Cottonseed oil processing machine

Solvent extraction method

Solvent extraction is a process, in which use one material called n-hexane solvent, to extract the oil from oil seeds. This method has a relatively low residual oil rate and is widely used in oil extraction. The cotton seed oil processing plant using solvent extraction technology to make cottonseed oil also need pretreat the cottonseeds with some machines. The cleaning and pre-pressing machines are same as those used in pressing line.

In the process of cottonseed oil extraction, the cotton seed oil solvent extraction machine uses the solvent in full contact with the oil to produce oil, and the oil contained in the cotton seed oil is leached to extract blended oil. The boiling point of solvent and oil is different, and the solvent is evaporated to obtain leached crude cotton seed oil. The extraction process technology mainly include four process: cottonseed oil solvent extraction, wet meal DTDC system, mixed oil steaming and stripping and solvent recovery.

The first step is after the cottonseed was pretreated, the cottonseed particles were injected into the extractor, sprayed with the solvent n-hexane, and the oil in the cottonseed was dissolved in the solvent to form the mixed oil. Then, the mixed oil is filtered through the sieve, and the cleaner mixed oil obtained will enter the mixed oil evaporation system. The second step is the wet meal treatment, the meal including a mount of the solvent about 25%-35%. And this part of solvent can be recovered and resumed so we use the desolventizer toaster to separated the solvent from meal. The third step is evaporation and stripping of solvents. We use the evaporator, stripper and other equipment to completely evaporate the solvent from the oil to obtain clean oil. The last part is solvent recovery, which mainly uses the condenser to convert the gaseous solvent into aliquid state, and uses the water distribution tank to recover the solvent for recycling.

Cottonseed oil solvent extraction process

Cottonseed oil refining

Both the pressed cottonseed oil and the extracted cottonseed oil need to be transported to the oil refinery workshop to remove various impurities. Cottonseed oil refining machine is divided into intermittent, semi-continuous and fully continuous three kinds, including degumming, deacidification, decolorization, deodorization 4 steps When we finish these 4 steps, we can get the cotton seed oil.

Cottonseed oil refining machine

The above is the introduction of the complete cotton seed oil processing plant. There are similarities and obvious differences between the two cotton seed oil processing plants. If you have any questions about cotton seed oil processing plant, please consult Henan Glory Company. We have professional engineers to answer your questions and provide you with high quality cotton seed oil processing machines.