Palm oil refining technology

Palm oil is the world's second largest edible vegetable oil. Palm plantation of low cost, low palm oil prices, thus has a strong competitiveness in the world oil market. Population in our country, the demand for vegetable oil has been improved, China's oil demand will keep growing at 5%, to 2010, total demand of 2 8 million t.

The purpose of the oil refining is to remove impurities, to achieve the finished product oil standard. Process main process is: crude oil, degumming, neutralization, decoloration, deodorization, points to mention. Add water hydration degumming, alkaline acid neutralization or steam distillation, and adsorbent activated clay or active carbon decoloring, high temperature vacuum deodorization and removal of smoke at low boiling point volatile matter.

1.       crude oil filter

Buy back crude oil should be filtered, leaching, suspended particles impurities and other impurities to the following production.

2.        the degumming

Colloid phospholipids mixture, sugar, protein, trace metals and other impurities. Degumming is the impurity removal process, the quality of the raw material oil to a great extent, determines the final quality of the products, raw materials of colloid is an important factor affecting the quality of oil and grease. These impurities that oil is not in contact with catalyst, reducing the cracking rate, no degumming directly and difficult to operation and increase due to emulsification oil loss, colloid is why fat double bubble, harmful to the stability of the product and colour.

3. neutralize

Neutralize acid has a great influence on the product quality and the price is the procedure, if the neutralization process has a problem, can bring difficulties to after decolorizing of each working procedure, and lower the product quality and yield. And usually has two methods of the physical and chemical methods, the principle of physical refining method namely gas stripping distillation acid should be as a process of choice for oil refining, chemical neutralization method with sodium hydroxide and hair oil, free fatty acid in the acid soap stock and waste water is produced. But physical refining method or chemical refining method choice, mainly depends on the quality of the crude oil.

4, decoloring

Bleaching is one of very important working procedure in the oil refining process, it besides pigment in removing oil, can reduce phospholipid content, peroxide value, soap content and the content of metal ions, thus improving product color, flavor and improve the oxidation stability, for further refining of oils and fats hydrogenation, deodorization provides a good condition.Oil decoloring by far the most commonly used method is activated clay adsorption decolorization method, namely using clay which has strong selective adsorption material, under certain conditions in removing the pigment in soluble in oil or colloidal particle dispersed pigments and other impurities in the oil.

5 deodorization

In oil deodorization process, in addition to complete the purpose of deodorization, is now more emphasis on realistic now under the low temperature, short time of unit operations, inhibit the generation of trans fatty acids, reduce the loss of tocopherol, lower polymerization, reduce the decomposition of vitamins (A, D, E).Temperature is 230 ~ 250, vacuum residual pressure is 6 ~ 8 mm . In order to prevent oxidation, before into the tower through degassing, direct steam is in order to improve the effect of deodorization. Heat oil recovery can be achieved by cold and hot oil heat exchange to achieve.

6. fractionation

Fractionation is the special handling for palm oil is put aside, namely the palm oil cooled to ℃ or so and keep a certain time, the composition of high melting point and crystallization precipitation, the secondary filter can be "points" into three different melting point of the product, these three products for palm stearin melting point higher than 40 ℃, brown put soft butter melting temperature 30 ℃ or so and liquid palm oil melting point below 20 ℃.These three products yield about 20%, 30% and 50% respectively, including liquid brown oil quality can reach the standard of cooking oil

Henan huatai  food & oil machinery engineering Co., ltd is a large scale enterprise of palm oil refining production line.henan  HuaTai  food & oil machinery engineering Co., ltd is awarded "high growth private enterprise"and provincial enterprise"technology center by henan provincial party commitee and provincial government".we have obtained "design liense of pressure vessel""manufacture liense of organic heat carrier biller"issued by general administration of quality supervision,inspection and quarantine,and have self-supported import and export right.
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