Biodiesel is a fatty acid ester synthesized from animal and plant oils or long-chain fatty acids with low-carbon alcohols such as methanol, and is an alternative energy source. This modified oil has physical and chemical properties very similar to diesel, and it burns fully without polluting emissions.

Currently, ester exchange method is widely used both domestically and internationally to produce biodieselDue to the increasing demand for biodiesel, moreThe appropriate method for preparing biodiesel has important practical significanceThe comprehensive utilization research of deodorized distillate from oil by-products is one of the important methods to promote the development of agricultural industrialization and alleviate energy shortages.

Using low-priced rapeseed oil deodorizer distillate to prepare biodiesel. Rapeseed oil deodorized distillate as a byproduct of oil processingIt is a mixture of various fractions obtained during the deodorization process of fats and oils, mainly containing a large amount of fatty acids, tocopherols, sterols and sterol esters, glycerides, and other components.At present, the utilization of deodorized distillate mainly focuses on natural vitaminsE, Separation of plant sterols and sterol esters.

Due to the complex composition of deodorized distillateIt is difficult to separate them by general vacuum distillation after methyl esterification. After methyl esterification of rapeseed oil deodorizer distillate, molecular distillation technology is used to prepare biodiesel for clean processing and comprehensive utilization of deodorizer distillate, providing sustainable energy supply for human beings.