Temperature-controlled Peanut Oil Press

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Peanut as one of the common oil materials, peanut oil in the market is popular with consumers. But in addition to the peanut oil, the peanut oil cakes obtained from the squeezed oil production can also produce a lot of marketable by-products by being made into protein powder.

(1) Used to make peanut protein drinks

Combine the peanut protein powder with sugar, minerals, vitamins and spices, and sterilize it to make a drink. For example, mix peanut protein with goat milk with frankincense peanut protein powder; India will mix peanut protein powder with milk in a 1:1 ratio into Milton alternative breast milk for infants.

(2) Used to make peanut tissue protein

Mix the degreated peanut powder with 25% water, 0.7% soda ash and 1% salt, and squeeze the organized peanut protein meat on the extruder. The skim peanut powder produced by low-temperature pre-press and one-leaching process produces tissue protein, and the product quality is comparable to similar foreign products.

(3) To be added to a variety of foods to make composite foods

Add peanut protein powder to a variety of foods, such as bread, baked food, fast food, meat patties, ice cream, not only the protein content has increased, peanut protein and wheat protein amino acids can also be balanced and complementary, but also have good water retention and expansion. Peanut protein flour was added to wheat flour in 8%~10% of the wheat flour to make noodles, the protein content was increased by 50%, and the cooking resistance was also significantly improved.

Then if you want to use the peanut oil cake as a by-product, in addition to the quality of the equipment, the early treatment of the raw materials is also an extremely important factor.

1.Clean up and dry

The peanuts entering the oil plant are inevitably mixed with some impurities. If you do not remove the peanut fruit mixed with soil, stems and leaves and other debris, they will not only affect the quality of oil and cake meal, but also will absorb a part of the oil, reduce the oil rate. If the peanut is sandwiched with sand, metal, hemp rope and other sundries, it will cause machine parts wear, induce production accidents, affect the process effect. Therefore, in order to ensure the smooth production, impurities must be removed as far as possible. Individual peanuts with high water content, in order to shell convenient, drying treatment is also very necessary, so that the high water peanut dehydration to the appropriate moisture.

If the impurities are light, such as weeds, stems and leaves, can be selected, with air to blow off impurities; if the impurity particles are small, can be screened, remove impurities; for some size, relative density similar to peanut impurities, if the dirt, can be used in the mill after screening method; if iron impurities, electromagnet or permanent magnet can be separated. The cleaned peanut fruit (with shell) should not be greater than 1. 0%.

2.Shelling

Peanuts need to be peeled before the oil production, its purpose: one is to reduce the adsorption of oil and improve the oil rate; the second is to improve the processing capacity of processing equipment, reduce the wear of processing equipment; the third is conducive to rolling the billet, improve the quality of gross oil; the fourth is to improve the quality of peanut cake meal, conducive to the comprehensive utilization.

3.Broken and rolling billet

The purpose of peanut kernel crushing is to mechanically reduce the peanut particle size from large and small, to create good oil production conditions for oil production. In the production, it is necessary to break the peanut kernel to 4~6 pieces, so that no more than 8% of the powder passes through the 20-hole / inch (1 inch =2.54 cm) sieve, which will facilitate the rolling billet. The rolling is the process of pressing peanuts into pieces, so it is also called pressing. The purpose of rolling billet is to destroy the cellular organization of peanuts and create favorable conditions for steaming, so that the oil can be separated smoothly when pressed or leaching.

4.Steam and fry

Steam and frying is one of the most important processes in the extraction of peanut oil. It is to destroy the peanut cells through water and temperature; the oil can reduce the oil viscosity and adjust the performance of the material to withstand the pressure and squeeze the oil from the peanut blank. Peanut oil pressing is mainly used for hot pressing. The effect of stir-frying has a direct impact on the smooth progress of the whole oil production process and the level of oil yield, as well as the quality of oil product and cake meal. Generally with steam boiler and vertical steam boiler and other equipment units, often choose wet steam steaming or heating steam billet method.

Wet steaming and frying method is a better steaming and frying method used by the domestic peanut oil factory. It can be basically divided into 3 processes that are wetting. According to the requirements of high moisture steam, when the peanut just into the steamer, the first of the material should be moist, so that it eat enough water.

If the draft is less, there will be a peanut mass, steaming and frying and even the external burned and internal sandwich phenomenon, thus affecting the oil rate. General peanut kernel should be wet for 15%~17% moisture. The second is steamed. The steam billet is heated after the raw billet is wet and then heated under closed conditions. Generally, it should be steamed at 95~ 100 " C for not less than 40 minutes. The third is to fry. Fried billet is the process of drying and dewatering the billet after wetting and steaming the billet, and the purpose is to make the moisture in the billet fully volatile. Generally, the frying time is not less than 20 minutes, until the water content is 1.5%~2.0%, the temperature is about 128C, you can be squeezed.

Heating a steam peanut is also common method to use, especially for the use of small oil press and hydraulic press pressing equipment unit is more suitable, the process is divided into two links: one is heating. Heating is the process of heating and removing the peanut at a certain temperature. In order to make the peanut heating evenly, fried evenly fried thoroughly and do not stir-fry coke, should add water in advance wetting, so that the peanuts draft one-cause, and put a certain amount of time. Generally placed for 8~12 hours, so that the spray of water infiltration into the peanuts. The billet should be moistened with water before heating, heating should be often turned or stirred, so that the peanut is heated evenly. The temperature of heating shall be controlled from 90~100 C. The second is steamed peanut. Steamed refers to the process in which the semi-cooked billet after heating is sprayed in a very short time to directly steam and make it a human pressing ripe billet. Its purpose is to make the cooked billet have the most suitable plasticity and resistance to improve the oil yield. Therefore, according to the oil of peanuts, adjust the bad water and temperature. The first squeeze is 5.5%~7.0% and the squeeze temperature is 100~105'C; the second squeeze is 9%~10% and the squeeze temperature is about 105C.

Main technical parameter :

Machine detail picture

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