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In the middle of the 20th century, it was discovered that epichlorohydrin could be synthesized by the reaction of glycerol with hydrochloric acid and further hydrolyzed by lye. However, due to the high price of glycerin at that time, the research in this field remained in the experimental stage and was not applied to the…
In general, glycerol conversion include chemical method and biological method, the vast majority is given priority to with chemical catalytic conversion, catalytic products, according to a report in the literature can be divided into two kinds, one is only the substrate glycerol, under different methods into the like – propylene glycol, propylene glycol, 1, 2,…
Glycerin was far from meeting people’s needs and the price was very expensive in the past. As a result, many epoxy-making devices around the world co-produce glycerol, or “synthetic glycerol”, by acidifying and hydrolyzing dichloropropanol or pure epichlorohydrin. In recent years, with the rising international oil prices, biodiesel as alternative energy is favored. For every…
Epichlorohydrin process Glycerol synthesized from epichlorohydrin is a mature process with good product quality. The production equipment was introduced in China in 1980. At present, the annual production capacity of synthetic glycerol in China is above 5kt. However, the production capacity of synthetic glycerol cannot be brought into full play due to the high price of…
Glycerol, the molecular formula C3H5(OH)3, is a sweet viscous liquid, so-called glycerol. It can be miscible with water at any ratio and has strong hygroscopicity. It’s an important basic organic material. Glycerin was first known in 1779 when the Swedish chemist Scheele accidentally obtained it from the reaction of olive oil with lead monoxide. …
1,2-propanediol is an important raw material of epoxy resin, unsaturated polyester, and polyurethane, accounting for about 45% of the total consumption. 1,2-propanediol viscosity and moisture absorption, and non-toxic, so in food, medicine and cosmetics industry widely used as a hygroscopic agent, antifreeze, lubricant, solvent and food emulsifier; In the pharmaceutical industry and cosmetics industry, it…
Glycerin production Glycerol products are divided into natural glycerol and chemically synthesized glycerol. Natural glycerol mainly uses vegetable oils and animal fats as raw materials to produce the by-products of some products, such as oil saponification to make soap, oil hydrolysis, and oil alcoholization. Synthetic glycerol is produced by chemical synthesis of petrochemical products. …
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