Biodiesel and preparing technology thereof

Abstract

The invention relates to biodiesel as a novel power source used by a gas engine using diesel oil as power and a preparation technology thereof. The preparation technology comprises the following steps: using oil plant fruits containing reproducible oil plants, animal oil and fat, oil palm, Chinese pistachio, and the like, oil water plants , such as engineered microalgae, and the like, 50-90 percent of waste cooking oil and 10-40 percent of methanol as raw materials; using 5-30 percent of solid organic acid as catalyst, assisting dissolving by 1-30 percent of surface active agent (ratio:), and continuously mixing the mixture for 20-120 min under the normal atmosphere condition with the temperature between 20 DEG C and 100 DEG C for reacting so as to prepare the biodiesel. The invention has the advantages of gentle reaction condition, short reaction time and high esterification and ester transformation ratio; the product can replace excellent mine diesel by 100 percent and can be mixed with the mine diesel according to any proportion for use.

Description

[technical field] [0001] The invention relates to a new power source for an internal combustion engine powered by diesel oil-biodiesel and its preparation technology. [Background technique] [0002] Biodiesel is a liquid fuel prepared from oily plants, animal oils, oily forest fruits such as oil palm and pistachio, engineering microalgae and other oily aquatic plants, and catering waste oil. It is a renewable clean energy and a high-quality substitute for mineral diesel. The synthesis of biodiesel mostly adopts transesterification (transesterification). Only oil, low-carbon alcohols and catalysts can make animal and vegetable oils and alcohols generate esters. Class parallel production of glycerol. [0003] At present, research at home and abroad is concentrated on the field of waste oil and oil residue such as waste oil or acidified oil, and inorganic acids or alkalis and their salts are used as catalysts. This type of process has mild reaction conditions and low cost, bu...

AI Technical Summary

Problems solved by technology

This type of process has mild reaction conditions and low cost, but the ester conversion rate is low, only about 60%, which is difficult to reach the standard of light diesel oil directly used by internal combustion engines and the like; the conversion rate of enzymatic catalytic reaction can reach 95%, but the catalyst enzyme is easy to Inactivation, relatively high production costs; supercritical methanol technology has harsh reaction conditions and high requirements for equipment

The above three types of transesterification reactions have their own advantages and disadvantages, but there is a common problem, that is, the process and source of raw materials are not enough to support the needs of industrialization