Cottonseed Protein Dephenolization Equipment Low Temperature Pretreatment Line

The Cottonseed Protein Dephenolization Equipment is a patented line that turns cottonseed cake into a safe protein raw material. It mainly includes a low temperature pretreatment section, a cottonseed oil extraction section and a cotton cake dephenolization section. Cottonseed protein is valuable, but the gossypol it naturally contains is toxic, so dephenolization is the step that decides whether the protein can be used in food or feed at all.

Our two solvent extraction dephenolization technology uses two kinds of solvent to extract the cottonseed oil and the gossypol step by step. This ensures the oil quality and a thorough desorption of gossypol, and it can guarantee a free gossypol content below 0.04 percent, which is well inside the international limit of 0.06 percent set by WHO, FAO and UNICEF. At the same time the process removes the aflatoxin that can build up in cottonseed during storage. Because the dephenolization is carried out directly on the wet meal right after the oil extraction section, the process reduces consumption, avoids cottonseed protein denaturation and keeps the product quality stable. The line runs at a capacity of 100 to 1000 tonnes per day.

• Patented process: low temperature pretreatment, oil extraction and cotton cake dephenolization in one line.
• Two solvent extraction: oil and gossypol are extracted step by step for thorough desorption.
• Very low gossypol: free gossypol below 0.04%, inside the WHO, FAO and UNICEF limit of 0.06%.
• Aflatoxin removal: the process removes the aflatoxin that forms in cottonseed during storage.
• Wet meal dephenolization: carried out directly on the wet meal to cut consumption and avoid protein denaturation.
• Stable quality: gentle treatment keeps the protein intact and the product quality consistent.

The dephenolization line is applied in cottonseed processing plants that want to upgrade cottonseed cake into a protein raw material for food and feed. It runs at 100 to 1000 t/d, from medium plants to large integrated cottonseed oil and protein projects, and it is the key enabling technology for using cottonseed protein safely in nutrition products instead of discarding the cake.

The line is shipped as process modules with the extraction, desolventizing and dephenolization equipment protected and braced for sea transport. We provide the process design, P and I diagrams, safety documentation for solvent handling and a commissioning service, together with a twelve month warranty on the extraction and dephenolization vessels.