A production process of monoglyceride and separation and purification process of slag

Abstract

A production process of monoglyceride and separation and purification process of slag, which relates to the field of chemical production, and its production process is: mixing hydrogenated oil and glycerin according to the ratio of 1:1, adding a catalyst for esterification, esterification The reaction temperature is 250°C, and the reaction time is 1h. After the reaction, the esterified product is neutralized and stratified by adding acid, and the crude ester in the neutralized stratification is subjected to three-stage distillation, and the first-stage distillation is used for dehydration and degassing. Glycerin and fatty acids are removed by distillation, and monoglyceride products are obtained by three-stage distillation. The monoglycerides are spray-dried, and then the finished product is packaged, and the slag in the neutralization layer is discharged. By increasing the proportion of glycerol in the reaction raw material, the content of the total monoester in the crude ester of the reaction product is increased to 80%, and at the same time, the energy consumption of the distillation process is reduced, and the loss of the scraper in the molecular distillation device is also reduced, and the production process is realized. Energy saving and consumption reduction, the recovered glycerin can be re-used as raw materials for production, reducing emissions and increasing efficiency for enterprises.

Description

technical field [0001] The invention relates to the field of chemical production, in particular to a monoglyceride production process and a slag separation and purification process. Background technique [0002] Monoglyceride is a non-ionic emulsifier with a wide range of uses. As an excellent W / O emulsifier, it has good emulsifying, soft, antistatic, and lubricating effects. It is widely used in daily chemicals, food, medicine, Textiles, polymer materials and other fields. In the food industry, monoglyceride is an important food emulsifier, and its consumption accounts for 2 / 3 of the total consumption of food emulsifiers. In the non-food industry, monoglycerides are used as excipients in pharmaceutical products for the formulation of neutral ointments. In the cosmetic industry, monoglyceride is the emulsifier of W / O emulsion, and it is an ideal raw material for ointment and cream products. In the polymer industry, monoglycerides can be used in cutting oil emulsifiers, te...

AI Technical Summary

Problems solved by technology

On this basis, use molecular distillation to obtain high-purity monoglycerides. Generally, 3 tons of 40% glyceride raw materials are required to obtain 1 ton of high-purity monoglycerides. Since the molecular distillation device requires ultra-high vacuum Therefore, under the traditional process, the cost price is high, the economic benefit is poor, and the slag discharged during the production process is difficult to recycle, and it is piled up in the factory area, causing certain pollution to the environment