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Method for preparing bio-oil fuel from microalgae through thermo-chemical conversion

A technology of thermochemical conversion and bio-oil, applied in fuel, liquid carbon-containing fuel, petroleum industry, etc., can solve problems such as lack of research, achieve rapid growth, easy survival, and beneficial effects of governance

Inactive Publication Date: 2013-04-17
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At home and abroad, the utilization of microalgal biomass in new energy is currently limited to the stage of extracting bio-oil, while there are few reports on the production of bio-oil through thermochemical conversion using microalgae as raw material, and the relevant research is scarce.

Method used

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  • Method for preparing bio-oil fuel from microalgae through thermo-chemical conversion
  • Method for preparing bio-oil fuel from microalgae through thermo-chemical conversion
  • Method for preparing bio-oil fuel from microalgae through thermo-chemical conversion

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Experimental program
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Effect test

Embodiment 1

[0025] The dried microalgae is pulverized in a pulverizer to obtain microalgae fine particles. Weigh 2.5g of the treated microalgae, put it in a 60ml autoclave, add 4ml of water, without catalyst, and seal it. Put the autoclave into the molten salt, control the temperature at 350°C for 60min. After the reaction is completed, quickly cool with water, depressurize and weigh the gas mass, open the reactor, and collect the mixture in the reactor. The reaction mixture was extracted with dichloromethane, separated and filtered to obtain a solid residue and an organic phase, and the dichloromethane was removed by rotary evaporation to obtain bio-oil.

Embodiment 2

[0027] The dried microalgae is pulverized in a pulverizer to obtain microalgae fine particles. Weigh 2.5 g of the treated microalgae, put it in a 60 ml autoclave, add 4 ml of ethylene glycol, without catalyst, and seal it. Put the autoclave into the molten salt, control the temperature at 350°C for 60min. After the reaction is completed, quickly cool with water, depressurize and weigh the gas mass, open the reactor, and collect the mixture in the reactor. The reaction mixture was extracted with dichloromethane, separated and filtered to obtain a solid residue and an organic phase, and the dichloromethane was removed by rotary evaporation to obtain bio-oil.

Embodiment 3

[0029] The dried microalgae is pulverized in a pulverizer to obtain microalgae fine particles. Weigh 2.5g of the treated microalgae, put it in a 60ml autoclave, add 4ml of methanol, without catalyst, and seal it. Put the autoclave into the molten salt, control the temperature at 350°C for 60min. After the reaction is completed, quickly cool with water, depressurize and weigh the gas mass, open the reactor, and collect the mixture in the reactor. The reaction mixture was extracted with dichloromethane, separated and filtered to obtain a solid residue and an organic phase, and the dichloromethane was removed by rotary evaporation to obtain bio-oil.

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Abstract

The invention relates to a method for preparing bio-oil fuel from microalgae through thermo-chemical conversion. The method comprises the following steps of firstly, sieving dried and crushed microalgae in a gong so as to obtain fine microalgae grains; secondly, weighing treated fine microalgae grains, putting into a high-pressure reaction kettle, and adding a solvent to react; and thirdly, extracting a mixture obtained after reaction by using an organic solvent, separating and filtering so as to obtain organic phase, and removing the organic solvent in a spin steaming mode so as to obtain the bio-oil. According to the method for preparing bio-oil fuel from microalgae biomasses which has the advantages of high photosynthetic efficiency and strong adaptive capacity to environment, short growing period, low energy consumption, easiness in large-scale cultivation, no farmland occupation, and reduced dependency on fossil energy; in addition, in the process of preparing the bio-oil from microalgae through thermo-chemical conversion, the bio-oil does not need to be prepared before ester exchange is carried out, so experiment is simple and easy, energy consumption is low and has good economic and social benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of new energy, and relates to a method for preparing bio-oil fuel through thermochemical conversion of microalgae. Background technique [0002] With the gradual depletion of fossil fuels and the aggravation of environmental pollution caused by the use of fossil fuels, it is imminent to seek renewable and pollution-free alternative new energy sources. Among all renewable new energy sources, biomass has become a research hotspot due to its high yield, low pollution, zero carbon dioxide emission and many other advantages. Among them, microalgae, as an important renewable biomass, has attracted increasing attention due to its high photosynthetic efficiency, strong environmental adaptability, short growth cycle, easy large-scale cultivation and low cost, and does not occupy arable land. Therefore, the utilization and transformation technology of microalgae has not only become a new direction in the internationa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/00C11B1/04C11B3/00C11B3/12C10L1/02
Inventor 段培高许玉平蔡红新张磊王枫白秀军
Owner HENAN POLYTECHNIC UNIV
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