Process for preparing biological diesel oil from waste animal and plant oil

Abstract

A process for preparing biologic diesel oil from waste plant or animal oil includes alcoholysis and esterifying reactions under the existance of acidic catalyst, separating out the excessive non-product part to obtain coarse product, adding saturated equeous solution of edible salt containing sodium carbonate (10%), neutralizing reaction, adding industrial sodium carbonat4e, heating distillation and collecting the gas-phase fraction at 22-320 deg.C to obtain biologic diesel oil. Its advantages are high performance no pollution, and simple preparing process.

Description

(1) Technical field:

[0001] The invention relates to a process for producing biodiesel from waste animal and vegetable oil. (two) background technology:

[0002] Experts predict that oil resources will be exhausted in the 21st century. All countries in the world are using oil resources more economically and effectively, and are actively developing new energy sources or developing alternative fuels. In recent years, many countries in Europe have developed a fuel oil similar to diesel produced by methyl esterification of vegetable oil with methanol. This oil is called "biodiesel" abroad. Because the oil can completely replace diesel oil, and because the exhaust gas after combustion does not contain sulfur dioxide and produces less nitrogen oxides, it greatly reduces the environmental pollution caused by burning fuel oil. This biodiesel is a new type of green and environmentally friendly fuel. Take the United States as an example. In 1999, the sales volume of biodiesel was onl...