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Oil-containing microalgae pressure catalytic oil refining technology

A technology of microalgae and technology, which is applied in the field of microalgae pressurized catalytic production of biofuel, which can solve the problems of separation difficulties in liquefaction, and achieve the effects of energy saving, less ash, and sufficient combustion

Inactive Publication Date: 2011-03-09
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] For the problems referred to above, the purpose of this invention is to provide a kind of organic solvent and CO 2 Pressurized catalytic refining technology of oil-containing microalgae as an additive to produce bio-fuel oil by microemulsion method, avoiding the disadvantage of difficult separation of liquefaction method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Take an appropriate amount of microalgae liquid, add FeCl 3 flocculant, and centrifuge the concentrate to obtain algae mud. Take 40g of algae mud (moisture content 70-90%) and put it into a high-pressure reactor with a volume of 250ml, add 40g of methanol as an organic solvent, and add 1g of FeCl 3 Catalyst, then fill the reactor with 2MPa CO 2 , stir and heat up to 300°C, react for 30min, and then pass condensed water to cool to room temperature; pour out the contents of the kettle, and wash the residue with methanol, centrifuge the resulting mixture to remove the solid residue, and obtain a mixture of bio-oil, methanol, and water The liquid was removed by distillation to remove part of the methanol, and then the liquid phase was left to stand and separated to remove 95% of the water to obtain crude bio-oil. Then add 2% n-pentanol (solvent) and 2% emulsifier (oleic acid + OP-10, mass ratio 1:1) to the bio-oil, and stir for 4min at 1200rpm to obtain Micro...

Embodiment 2

[0019] Example 2: Take an appropriate amount of microalgae liquid, add FeCl 3 Flocculant, centrifuge the concentrated solution to obtain algae mud, take 40g of algae mud (moisture content 70-90%) and add it to a 250ml high-pressure reactor, add 40g of methanol to it, add 2g of AlCl 3 Catalyst, then fill the reactor with 3MPa of CO 2 , stir and heat up to 300°C, react for 40min, then pass condensed water to cool to room temperature, pour out the contents of the kettle, and wash the residue with methanol, centrifuge the resulting mixture, remove the solid residue, and obtain a mixture of bio-oil, methanol, and water The liquid was removed by distillation to remove part of the methanol, and then the liquid phase was left to stand and separated to remove 95% of the water to obtain crude bio-oil. Then add 2% by volume of n-pentanol (co-solvent) and 2% by volume of emulsifier (oleic acid+OP-10, mass ratio 1:1) to the bio-oil, and stir for 3min at 1200rpm to obtain micro Emulsifi...

Embodiment 3

[0021] Example 3: Take an appropriate amount of microalgae liquid, add FeCl 3 Flocculant, centrifuge the concentrate to get algae mud, take 40g of algae mud (moisture content 70-90%) and add it to a 250ml high-pressure reactor, then add 40g of ethanol to it, add 2g of BF 3 Catalyst, fill the reactor with 4MPa of CO 2 , stir and heat up to 350°C, react for 60min, then pass condensed water to cool to room temperature, pour out the contents of the kettle, and wash the residue with ethanol, centrifuge the resulting mixture, remove the solid residue, and obtain a mixture of bio-oil, ethanol, and water Liquid, part of the ethanol was removed by distillation, and then the liquid phase was allowed to stand for stratification, and 95% of the water was removed to obtain crude bio-oil. Then add 2% by volume of n-pentanol (co-solvent) and 2% by volume of emulsifier (oleic acid+OP-10, mass ratio 1:1) to the bio-oil, and stir for 2min at 1400rpm to obtain micro Emulsified biofuel.

[0...

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Abstract

The invention discloses an oil-containing microalgae pressure catalytic oil refining technology, comprising the following steps: directly putting the wet microalgae into a high pressure reactor, and adding a certain amount of organic solvent and Lewis acid catalyst into the reactor; inflating the CO2 of 2 to 4 MPa into the reactor, stirring and heating to the temperature of 300 to 450 DEG C to react for 30 to 60 minutes; and cooling to the room temperature to obtain a raw product, and separating to obtain a liquid product; removing part of the organic solvent and most of the water, and addinga microemulsification assistant to obtain the micro emulsification biofuel oil. In the invention, the wet microalgae is used as the raw material, thereby avoiding the defect of large consumption of the energy in the drying of the oil-containing microalgae. The micro emulsification biofuel oil produced has good stability, no layering, no sediment, high temperature resistance, easy storage, high calorific value, sufficient burning and less ash content, can be used to replace the domestic fuel and part of the industrial fuel, and has wide application field.

Description

technical field [0001] The invention belongs to the field of microalgae new energy, and more specifically relates to a technology for microalgae pressurized catalytic production of biofuel. Background technique [0002] With the development of society and economy, energy problems are becoming more and more prominent, and the dependence of human society on energy is becoming more and more obvious. However, fossil fuels (such as oil and coal) are becoming exhausted, and the use of fossil fuels has also brought many Problems such as acid rain and the greenhouse effect. These major problems are forcing the governments of various countries to consider the development of new energy sources. The development of biomass energy has attracted the attention of various countries. Natural plants can not only absorb CO in the atmosphere 2 , reduce the greenhouse effect, and can also produce bio-fuels to alleviate the energy crisis. [0003] At this stage, some countries have taken advant...

Claims

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Application Information

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IPC IPC(8): C10L1/32C10L1/182C10L1/188C10L1/198
Inventor 李春虎冯丽娟卞俊杰田义斌高健
Owner OCEAN UNIV OF CHINA
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