Groundnut oil, also known as peanut oil, is produced through a series of steps that involve both mechanical and chemical processes. Here's a detailed overview of the groundnut oil production process:

1. Preparation of Groundnuts

•  Cleaning: The harvested groundnuts are cleaned to remove any foreign materials such as leaves, dirt, and stones. This ensures that the oil is not contaminated.

•  Dehulling: The outer shells of the groundnuts are removed. This can be done by using a dehulling machine. Removing the shells increases the oil yield and improves the efficiency of the groundnut oil extraction process.

2. Mechanical Pressing

•  Cooking: The cleaned and dehulled groundnuts are cooked to break down the cell walls and make the peanut oil extraction easier. Cooking also reduces the viscosity of the oil, allowing it to flow more freely.

•  Pressing: The cooked groundnuts are then fed into a groundnut oil screw press machine. The mechanical pressure applied by the screw press extracts the oil from the groundnuts. This method can extract about 85% of the oil.

3. Solvent Extraction

•  Solvent Extraction: The remaining oil in the pressed groundnut cake is extracted using a solvent, usually hexane. The solvent dissolves the oil, which is then separated from the solid residues. The solvent is later removed from the oil through distillation.

4. Refining

•  Degumming: The crude oil is treated with water to remove phospholipids and other impurities.

•  Neutralization: The oil is treated with an alkali to neutralize free fatty acids, which are then removed.

•  Bleaching: The oil is bleached to remove pigments and other impurities.

•  Deodorization: The oil is heated under vacuum to remove volatile compounds that can affect the flavor and odor of the oil.

5. Filtration

•  Filtration: The refined oil is filtered to remove any remaining impurities. This ensures that the final product is clear and pure.

Equipment Used:

•  Cleaning Machines: For removing foreign materials.

•  Dehulling Machine: For removing the outer shells.

•  Cooking Pot: For heating the groundnuts.

•  Screw Press Machines: For mechanical pressing.

•  Solvent Extraction Machine: For extracting the remaining oil.

•  Refining Equipment: For degumming, neutralization, bleaching, and deodorization.

•  Filtration Systems: For final purification.

Henan Huatai Cereals and Oils Machinery Co., Ltd. has been committed to the production and research and development of grain and oil machinery for 36 years. The factory covers an area of 170 acres, with standardized production workshops and mature equipment manufacturing technology, providing customers with high-quality and cost-effective refined oil equipment. Huatai's main products include: complete sets of vegetable oil refinery machine, complete sets of cooking oil extraction machine, pressing equipment and other oil machinery equipment. A variety of specifications and models meet the needs of different customers and support customer customization. We also provide customers with free plant design drawings, equipment location drawings, process flow charts, equipment installation packages, and technical training packages. One-stop service helps customers solve oil and fat technical problems.

Website: https://www.oilpresscn.com/

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