Service Hotline:0086-371-55021219

Zhengzhou First Grain and Oil Machinery Co., LTD

Hotline:0086-371-55021219
Add:The crossing of Taian Road and Zhanhuan Road,Zhandian Industrial Zone,Zhengzhou,Henan Province,China
Hotline:0086-371-55021219

Email:First@oipress.com

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Soybean oil refining production line

Time:2016-03-05Form:Hits:

Soybean oil refining

 Soybean oil refining production line

Soybean oil rate is low, 16%-22%.The commonly used method of making oil leaching method is a process.
Process usually is as follows: the soybean to clean up, broken to soften, flaking-conditioning-leaching- >{leaching wet meal to wet meal desolventizing, soybean meal} to mix oil, mixed oil processing - leaching soybean oil

In soybean crushing, should be based on the situation of the broken before and after the material, the strict control of powder.Moisture conditioning, mainly adjust the bean embryos and reached the standard of suitable into the dip.If the moisture of raw material is appropriate, can simplify the operation.In large-scale production of extractor, soybean rolled sheet can be slightly thicker, to adapt to increased resistance to leach out the bed of the bearing pressure, at the same time extend the experience of soaking time.When defatted soybean meal to make edible protein raw materials used, the pretreatment of soybean can, according to the requirement of peeling and expanded.
(a) process
Ordinary intermittent refining of edible oil, soybean process is as follows: leaching soybean oil to hydration degumming, alkali refining acid, water washing to dehydration desolventizing, ordinary soybean cooking oil
(2) the operating point
Refining, hydration temperature of 90 °C to 95 °C, add water to oil colloid content of 3-3.5 times, hydration time is 30-40 minutes, and precipitation separation to oil foot.Alkali refining operations to initial temperature of 35 °C +, final temperature is 60 °C to 65 °C, lye concentration of 16 baume degree.After neutralization, static sedimentation, soapstock was isolated, and hot water washing several times.Desolventizing temperature is about 160 °C, the operating pressure is not more than 7000 pa, desolventizing time is 1-3 hours.The standard for the oil soluble below 50 x - 6.
For light color, good flavor, oxidation stability of good finished product oil, must be removed almost all of the phospholipids compositions in hair oil.Soybean oil alkali refining, generally with concentration of 17-18 baume degree strong alkalinity.Add acid degumming and alkali refining can not separate, but if asked for soybean phospholipid by-products, must be independently hydration degumming.On decoloring operation, this to must carry on the deodorization of soybean oil, the combination of adsorption decolorizing with thermal discoloration.Because of soybean oil thermal decolouring effect, especially in the above 204 °C temperature, on the deodorization, deodorization soybean oil is "finish" phenomenon, should pay attention to overcome harmful factors in production.Internationally, there with a winterization partially hydrogenated soybean oil preparation high stability of soybean oil products.
Adjust the soybean oil initial temperature to 40 °C, J add 0.1%-0.2% for oil, industrial phosphoric acid concentration of 85%, 30 minutes, stir to come unglued.And adding alkali, acid to alkali refining, super alkaline accounts for 0.1% ~ 0.3% of heavy oil, concentration of 16 baume degree.At the time of joining, quick stir.After the lye to join, continue to stir for 30 minutes.When soap grain of condensate accumulation, namely reduce the stirring speed, the temperature of the rise in oil terminal temperature is about 65 °C to alkali refining.Then, let stand 6 ~ 8 hours, soapstock was isolated.Then tell the oil to heat up to 65 °C, at 75 °C to 80 °C hot water washing 1-2 times.When catharsis, stirring speed.Washing water, every time is about 10%-15% of heavy oil.Let stand for separation of waste water drainage of oil after the absolute pressure of 8000 mpa under vacuum condition, and temperature of 90 °C to 95 °C for dehydration.After joining of heavy oil by 3%-5% adsorption decolorizing activated clay.After decolorizing, filter the waste clay, decoloring oil into the pan deodorization of again, adjust the absolute pressure of 0.67 million mpa, temperature of 230 °C to 240 °C, and direct steam injection (0.1-0200000 mpa steam pressure), distillation more than 3 hours.After cooling, fine filtration, vested soybean senior cooking oil.In order to improve the oxidation stability and flavor stability of finished product, can start after deodorization and deodorization in the oil cooling with a small amount of citric acid, dosage of 0.02%-0.04% for the oil, with the concentration of 5% citric acid aqueous solution to join.

Zhengzhou First Grain and Oil Machinery Co., LTD
Add:The crossing of Taian Road and Zhanhuan Road,Zhandian Industrial Zone,Zhengzhou,Henan Province,China
Tel:0086-371-55021219

Email:First@oipress.com