A device for preparing biodiesel from microalgae biomass first transesterified and then extracted

Abstract

The invention relates to a chemical production device and aims to provide a device for preparing biodiesel from microalgae biomass by means of ester exchange and then extraction. The device comprises a multifunctional kettle, a solvent storage tank, a solvent condenser, a distillation still, a biodiesel storage tank, a methyl ester condenser, an air balance tank and a vacuum pump. The top of the multifunctional kettle is connected with the solvent condenser which is connected with the solvent storage tank. The solvent storage tank is connected with the air balance tank. The bottom of the multifunctional kettle is connected with the top of the distillation still. The top of the distillation still is connected with the methyl ester condenser which is connected with the biodiesel storage tank. The biodiesel storage tank is connected with the air balance tank which is connected with the vacuum pump. Without using a highly-toxic extraction chloroform agent, microalgae biomass is utilized for preparing the biodiesel efficiently and fast, efficiency is high, cost is low, production operation is safe and easy, and the device has a wide industrial application prospect.

Description

technical field [0001] The invention relates to the field of chemical production devices, in particular to a device for preparing biodiesel by first transesterifying and then extracting microalgae biomass. Background technique [0002] Since China became a net importer of crude oil in 1996, the rapid growth of my country's domestic economy has led to a continuous increase in demand for crude oil. In 2013, the apparent consumption of crude oil rose to 488.459 million tons, and the foreign dependence reached 57.39%. With the development of China's economy, the consumption of petroleum energy will continue to increase, and the inevitable dependence on foreign countries will become more and more serious. This poses a huge threat to my country's energy security. At the same time, with the increasing number of automobiles in my country, automobile exhaust pollution has become a serious social problem. Compared with petrochemical diesel, the high oxygen content (10%) in biodiese...

AI Technical Summary

Problems solved by technology

However, this method requires the use of toxic solvents such as chloroform to obtain a higher oil extraction rate, which is not suitable for industrial production applications

[0007] Therefore, the method of first transesterification and then extraction avoids the use of highly toxic chloroform, and it is of great significance to efficiently and quickly utilize microalgal biomass to produce biodiesel. Diesel related device design

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