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[Chemical Knowledge]：Production and manufacturing method and process of white oil

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The manufacturing method
of white oil
1. Introduction

white oil is a common chemical production raw material, widely used in food, medicine, cosmetics, plastics and rubber industries. There are two main methods of manufacturing white oil: physical method and chemical method, in which physical method includes fractionation method and solvent extraction method, chemical method includes esterification method and hydrogenation method. This article will introduce the manufacturing method of white oil in detail, including raw material selection, production process, operation points and so on.

2. raw material selection

white oil raw material is mainly petroleum or natural oil. Petroleum is a mixture of hydrocarbons, mainly composed of hydrocarbons. Natural oils are mainly from animals and plants, the composition is more complex, including triglycerides, fatty acids, alcohols and so on. When selecting raw materials, it should be matched according to product requirements and production process.

3. manufacturing methods

1. physical method

(1) fractionation method: fractionation method is the use of different boiling points of substances, by means of heating and condensation, the mixture is separated into components with different boiling points. In the production of white oil, the fractionation method is mainly to heat the oil to a certain temperature, so that it is evaporated and gasified, and then cooled and liquefied by the condenser, and the components of different boiling points are separated respectively, so as to obtain white oil products.

(2) Solvent extraction method: Solvent extraction method is to use the difference in solubility of substances in two immiscible solvents to transfer the target substance from one solvent to another solvent to achieve separation. In the production of white oil, the solvent extraction method is usually to mix the natural oil and the solvent, through stirring, standing and other steps, so that the triglyceride and other components in the oil are dissolved in the solvent, and then the solvent layer is separated to obtain the white oil product.

2. chemical method

(1) esterification method: esterification method is through the esterification reaction of alcohol and carboxylic acid, the method of generating ester compounds. In the production of white oil, the esterification method is mainly the esterification reaction of natural oils and alcohols such as methanol to generate esters such as triglycerides and methyl esters, and then the white oil products are separated by fractionation and other methods.

(2) Hydrogenation Method: The hydrogenation method is a method in which an unsaturated fatty acid is converted into a saturated fatty acid by a hydrogenation reaction. In the production of white oil, the hydrogenation method mainly hydrogenates the unsaturated fatty acids in natural oils to produce saturated fatty acids, thereby improving the stability and antioxidant properties of white oil.

4. operation points

In the manufacturing process of white oil, the following operation points need to be paid attention to:

1. Control the heating temperature and heating speed to avoid raw material decomposition or coking;
2. Control the conditions of fractionation or extraction to ensure the quality and yield of the product;
3. In the chemical method, control the reaction temperature and reaction time to avoid the occurrence of side reactions;
4. In the production process, attention should be paid to safety and environmental protection to avoid accidents and pollution.

5. Conclusion There are many ways to manufacture

white oil, including physical and chemical methods. When choosing a manufacturing method, factors such as product requirements, raw material sources and production costs should be considered comprehensively. At the same time, in the production process, it is necessary to pay attention to the main points of operation and safety and environmental protection to ensure the quality of products and the safe and smooth progress of production.

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