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Method for preparing microalgae biodiesel through esterification reaction

A technology of microalgae bio-esterification reaction, which is applied in biofuel, fatty acid esterification, petroleum industry, etc., can solve the problems of low biodiesel yield, long reaction time, and low catalytic efficiency, and achieve strong environmental adaptability, The effect of large reaction interface and improved catalytic efficiency

Inactive Publication Date: 2017-01-04
南宁华侨投资区政孙贸易有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing biodiesel production process generally has the following problems: low catalytic efficiency, low biodiesel yield, long reaction time, corrosion equipment, complex process, high energy consumption, high cost, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of chaetoceros culture medium: glucose 30mg / L, NaNO 3 1.2mg / L, KH 2 PO 4 1.4mg / L, chitosan 1.2mg / L, biogas slurry 7mg / L, f2 vitamin 3mL and seawater 1L;

[0027] A method for preparing microalgae biodiesel by esterification, comprising the following steps:

[0028] S1. Cultivation of Chaetoceros: Use Chaetoceros as raw material, inoculate the culture medium at an inoculation density of 4 million cells / mL, and irradiate with red and blue LED supplementary light for 12 hours / day, and the red light in the LED supplementary light The ratio with blue light is 1:2, the light intensity is controlled at 2500LX, the culture temperature is controlled at 26°C, cultured for 8 days, the density of Chaetoceros reaches 60 million cells / mL, and Chaetoceros cells are collected;

[0029] S2. Oil extraction: After concentrating and drying the chaetoceros cells collected in step S1, use ultrasonic waves to break the walls of chaetoceros, control the ultrasonic power to 150W,...

Embodiment 2

[0034] Preparation of chaetoceros medium: glucose 35mg / L, NaNO 3 1.3mg / L, KH 2 PO 4 1.5mg / L, chitosan 1.3mg / L, biogas slurry 6mg / L, f2 vitamin 2mL and seawater 1L;

[0035] A method for preparing microalgae biodiesel by esterification, comprising the following steps:

[0036]S1. Cultivation of Chaetoceros: Use Chaetoceros as raw material, inoculate the culture medium at an inoculation density of 5 million cells / mL, and irradiate with red and blue LED supplementary light for 14h / day, and the red light in the LED supplementary light The ratio with blue light is 1:3, the light intensity is controlled at 2200LX, the culture temperature is controlled at 27°C, cultured for 5 days, the density of Chaetoceros reaches 60 million cells / mL, and Chaetoceros cells are collected;

[0037] S2. Oil extraction: After concentrating and drying the chaetoceros cells collected in step S1, use ultrasonic waves to break the walls of chaetoceros, control the ultrasonic power to 170W, and ultrasoni...

Embodiment 3

[0042] Preparation of chaetoceros culture medium: glucose 40mg / L, NaNO 3 1.4mg / L, KH 2 PO 4 1.6mg / L, chitosan 1.4mg / L, biogas slurry 5mg / L, f2 vitamin 1mL and seawater 1L;

[0043] A method for preparing microalgae biodiesel by esterification, comprising the following steps:

[0044] S1. Cultivation of Chaetoceros: using Chaetoceros as raw material, inoculate the culture medium at an inoculation density of 4 million cells / mL, and irradiate with red and blue LED supplementary light for 16 hours / day, and the red LED supplementary light The ratio of light to blue light is 1:2, the light intensity is controlled at 2000LX, the culture temperature is controlled at 28°C, cultured for 8 days, the density of Chaetoceros reaches 60 million cells / mL, and the cells of Chaetoceros are collected;

[0045] S2. Oil extraction: After concentrating and drying the chaetoceros cells collected in step S1, use ultrasonic waves to break the walls of chaetoceros, control the ultrasonic power to 20...

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Abstract

The invention discloses a method for preparing microalgae biodiesel through an esterification reaction. The method comprises the following steps that a culture medium is inoculated with chaetoceros gracilis, the culture medium is irradiated with a red-blue light LED light supplementing lamp for 12 h per day to 16 d per day, the chaetoceros gracilis is cultured for 5 days to 8 days at the temperature of 26 DEG C to 28 DEG C, and then chaetoceros gracilis cells can be collected; the collected chaetoceros gracilis cells are subjected to wall-breaking treatment through ultrasonic waves and then extracted through an organic solvent to obtain microalgae grease, the microalgae grease, methyl alcohol and a zeolite molecular sieve catalyst are added into a reactor according to the mass ratio of 1:(6-8):(0.01-0.03) to be subjected to the esterification reaction to obtain an esterification product, the esterification product is separated and extracted, and then the biodiesel can be obtained; According to the method, the chaetoceros gracilis which is short in production period, wide in distribution and high in photosynthesis and grease content is taken as the raw material, and therefore the problems existing in vegetable grease raw materials in biodiesel development are solved; meanwhile, the advantages of being simple in preparation technology, high in catalytic efficiency, grease extraction rate and product yield and the like are achieved, and a foundation is laid for biodiesel industrialization and scale.

Description

technical field [0001] The invention belongs to the technical field of biomass energy, in particular to a method for preparing microalgae biodiesel through esterification. Background technique [0002] With the increasing depletion of fossil fuels and the sharp rise in oil prices, the search for renewable energy has become a solution to human survival and to maintain the sustainable development of the world economy. As a new alternative energy, biodiesel is developing rapidly in countries all over the world. Biodiesel refers to oil crops such as soybeans, rapeseed, cotton, palm, etc., wild oil plants and engineering microalgae and other aquatic vegetable oils, animal fats, and catering waste oils, etc. Renewable diesel fuel to replace petrodiesel. The advantages of biodiesel are not limited to renewability. Compared with existing diesel, it also has the following advantages: high cetane number, which makes the combustion performance better; better wetting performance, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/02C11B1/04C11B1/10C11B3/12C11C3/10C10L1/02
CPCC10L1/02C11B1/025C11B1/04C11B1/10C11B3/12C11C3/10Y02E50/10
Inventor 黄健峻其他发明人请求不公开姓名
Owner 南宁华侨投资区政孙贸易有限公司
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