Phosphoric acid: Concentration 85% (edible grade)
Caustic soda: solid alkali, containing NaOH above98%(edible grade)
Activated clay (edible grade)
Diatomaceous earth (edible grade)
According to the different requirements of customers, we can do projects from 10 tons to 2000 tons.
Small production without shelling can save costs while big scale with shelling can raise the protein content of the meal, and therefore improve the quality of oil.
Oil plants pre-treatment is a series of treatments including cleaning, peeling, crushing, softening, rolling embryo, puffing, damp heat treatment and drying after which the oil is extracted. The purpose is to remove the impurities and make the raw materials into a certain structural property to meet the requirements of different technology.
Vegetable oil production process: pre-treatment, pressing, leaching, crude oil refining, oil filling.
Raw materials of vegetable oil processing : soybean, sunflower seeds, rapeseed, cotton seeds, corn germ, peanut, rice bran, sesame seeds, flaxseed and so on.
Raw materials of Animal oil processing: pig fat, sheep fat, fish fat, chicken fat and so on.
Less than 1%.
Solvent residue in leaching oil is less than 100PPM and refined oil doesn't contains solvent residue.
Normally we use N-hexane as solvent.
High oil content materials such as peanuts, sunflower seeds, rapeseed are suitable for pre-press leaching. Materials with low oil content such as soybeans is suitable for direct leaching.
The advantage of leaching is following: the meal contains less residual oil, high oil yield, cost low, high economic efficiency, and high quality of meal for the feed industry.
Different types of oil refining process is different. For example, soybean and rapeseed oil does not require dewaxing while sunflower seed oil does.
1. Crude oil contains impurities, and it's oxidized and deteriorated easily which means long-term storage is difficult.
2. There may be harmful substances in the crude oil.
3. When heating crude oil, there are many bubbles, smell, fumes which obviously affect the smell and taste of food.
Mainly contains the following sections: deacidification degumming, decolorization, deodorization and dewaxing.
The land area typically depends on the capacity of the plant. We can suggest an appropriate space to prepare after given specifications, or, can design the oil plant in-house specifically to the amount of work space available.
Cakes, phospholipids, oil feet, soap feet and fatty acids.
Refined oil meet the first grade quality indicator of China's vegetable oil standard.
Sunflower seed oil, rice bran oil, corn germ oil, tea seed oil.
Soybean: 15% to 26%
Sesame: 45% to 63%
Rice bran: 14% to 24%
Sunflower seeds: 29% to 30%
Cottonseed: 16% to 22%
Peanuts: 45% to 50%
This depends on the continuous extraction requiring 24 hours, while the tank batch refining of the tank extractor requires 8 hours.
Generally there are two ways in making Edible vegetable oil: press and leaching. Press can be divided into hot pressing and cold pressing.
Characteristics of cold pressing are following: need relatively low temperature, low oil yield, pale oil, less impurities, retain more nutrients, suitable for high-grade health oil and some s mall variety of oil which is not suitable for heating.
Raw materials suitable for hot pressing: sesame seeds, peanuts, sunflower, rapeseed, soybean, corn germ, wheat germ and so on.
Expanded leaching process
Pressing squeezes as much as possible oil out from the oil materials with cake residue for about 7%, while the pre-pressing only squeeze 80% of the oil with cake residue of 8% to 16% which means the cakes need to be leached then.