Method for preparing biological oil by co-liquefaction of algae and lignocellulosic biomass

A woody biomass and co-liquefaction technology, which is applied in the preparation of liquid hydrocarbon mixtures, the petroleum industry, and liquid carbon-containing fuels, can solve the problems of poor reaction conditions and harshness of bio-oil products, and achieve strong environmental adaptability and easy Separation, the effect of high photosynthetic efficiency

Inactive Publication Date: 2016-07-06
JIANGSU UNIV
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  • Claims
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Problems solved by technology

[0006] In order to overcome the current disadvantages of poor bio-oil and harsh reaction conditions obtained by liquefying algae or woody biomass alone, the present invention proposes a method for preparing bio-oil by co-liquefaction of algae and woody biomass. The co-liquefaction of algae and woody biomass is realized under solvent conditions, and the synergistic effect between the two is fully utilized to obtain liquid bio-oil with higher oil production rate and better oil quality, and greatly reduce the severity of reaction conditions, significantly Improve the economy of the reaction process

Method used

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  • Method for preparing biological oil by co-liquefaction of algae and lignocellulosic biomass

Examples

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Effect test

Embodiment 1

[0032] (1) Crush 5g of spirulina and 5g of pine sawdust into particles with a particle size of 0.2mm to form a homogeneous mixture with a mass ratio of 1:1, and then mix it with 100ml of ethanol-water co-solvent with a volume ratio of 1:1 to fully Mix to form a slurry with a solid-to-liquid ratio of 10g:100ml, and add it to a high-temperature and high-pressure hydrothermal reactor;

[0033] (2) Seal the reaction kettle, fill it with nitrogen gas with an initial pressure of 5MPa, and set the magnetic stirring speed at 1000r / min. After heating up to a given temperature, the co-liquefaction reaction is carried out. The reaction temperature is 300°C, the pressure is 30MPa, and the reaction time is 60min;

[0034] (3) After the reaction is completed, cool the high-temperature and high-pressure hydrothermal reactor to room temperature, collect the gaseous product, and add dichloromethane to the liquefied product for extraction;

[0035] (4) Separating the extracted liquefied product...

Embodiment 2

[0039] (1) Crush 5g of chlorella and 5g of rice husk into particles with a particle size of 0.2mm to form a homogeneous mixture with a mass ratio of 1:1, and then mix with 100ml of methanol-water co-solvent with a volume ratio of 1:1 to water Fully mix to form a slurry with a solid-to-liquid ratio of 10g:100ml, and add it to a high-temperature and high-pressure hydrothermal reactor;

[0040] (2) Seal the reaction kettle, fill it with nitrogen gas with an initial pressure of 10MPa, and set the magnetic stirring speed at 1000r / min. After heating up to a given temperature, the co-liquefaction reaction is carried out. The reaction temperature is 320°C, the pressure is 30MPa, and the reaction time is 45min;

[0041] (3) After the reaction is completed, cool the high-temperature and high-pressure hydrothermal reactor to room temperature, collect the gaseous product, and add acetone to the liquefied product for extraction;

[0042] (4) Separating the extracted liquefied product into ...

Embodiment 3

[0046] (1) Crush 5g of blue-green algae and 5g of pine wood chips into particles with a particle size of 0.2mm to form a homogeneous mixture with a mass ratio of 1:1, and then fully mix with 100ml of ethanol-water co-solvent with a volume ratio of alcohol to water of 1:1 Form a slurry with a solid-to-liquid ratio of 10g:100ml, and add it to a high-temperature and high-pressure hydrothermal reactor;

[0047] (2) Seal the reaction kettle, fill it with hydrogen gas with an initial pressure of 5MPa, and magnetically stir at a speed of 1000r / min. After heating up to a given temperature, the co-liquefaction reaction is carried out. The reaction temperature is 300°C, the pressure is 30MPa, and the reaction time is 30min;

[0048] (3) After the reaction is completed, cool the high-temperature and high-pressure hydrothermal reactor to room temperature, collect the gaseous product, and add dichloromethane to the liquefied product for extraction;

[0049] (4) Separating the extracted liq...

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Abstract

The invention belongs to the technical field of biomass energy and preparation thereof, and discloses a method for preparing biological oil by co-liquefaction of algae and lignocellulosic biomass.The method comprises the following steps: taking the algae and the lignocellulosic biomass as raw materials and taking an alcohol-water cosolvent as a reaction medium; carrying out co-liquefaction in a high-temperature and high-pressure hydrothermal reaction kettle; cooling an obtained liquefied product, extracting the obtained liquefied product by using an organic solvent; and then carrying out solid-separation separating and separating an organic solvent phase from an alcohol-water phase to finally obtain a gaseous product as a by-product, solid residues and a water-phase product.Synergistic effect of the algae and the lignocellulosic biomass is utilized comprehensively, the alcohol-water cosolvent is taken as the reaction medium, energy consumption and investment cost in a reaction system process are reduced, quality and yield of prepared liquid, namely the biological oil, are improved further, recycling of the algae and the lignocellulosic biomass is realized, meanwhile, energy crisis caused by exhaustion of fossil energy can be relieved, and the application prospect is wide.

Description

technical field [0001] The invention relates to a method for preparing bio-oil by co-liquefaction of algae and woody biomass, in particular to a method for preparing bio-oil by co-liquefaction of algae and woody biomass under the condition of sub / supercritical alcohol-water co-solvent, which belongs to biomass energy and its preparation technology field. Background technique [0002] With the rapid development of social economy and the improvement of people's living standards, human needs and dependence on fossil energy have become increasingly obvious. However, due to the excessive use of non-renewable fossil energy such as coal, oil, and natural gas, the energy crisis and related environmental problems have become increasingly prominent. In order to ensure energy security and slow down the use of fossil energy, the development of clean and renewable biomass energy has attracted widespread attention from scholars at home and abroad. Biomass resources are the fourth larges...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/00C10G1/00
CPCC10L1/00C10G1/002
Inventor 何志霞纪长浩王谦郭根苗徐贵生
Owner JIANGSU UNIV
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