Method of preparing bio-oil through raw material pretreatment and hydrothermal liquefaction

A hydrothermal liquefaction and combined preparation technology, which is applied in the fields of environmental protection and new energy, can solve the problems of complex oil composition and low bio-oil yield, and achieve the effect of saving energy consumption

Inactive Publication Date: 2018-10-16
SHENYANG AEROSPACE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to aim at the situation that the bio-oil yield obtained by the existing sludge hydrothermal liquefaction method is low and the oil composition is too complicated, combining CTAB, AEO 9 The remo...

Method used

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  • Method of preparing bio-oil through raw material pretreatment and hydrothermal liquefaction

Examples

Experimental program
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Effect test

Embodiment 1

[0038] (1) Mix 50 g of municipal sludge with a moisture content of 85% and 0.75 g of surfactant, wherein: the dry basis sludge raw material: the mass ratio of surfactant = 1:0.1, and the surfactant is CTAB: AEO 9 =3:7, to obtain uniformly mixed sludge;

[0039] (2) Stir the sludge homogeneously mixed in step (1) with a mechanical agitator at a rate of 200r / min for 1h to obtain sludge pretreated by surfactant;

[0040] (3) Mix 50.75g of sludge pretreated with surfactant, 150ml of deionized water, and 75ml of methanol in step (2) to make a slurry, wherein: dry basis of sludge pretreated with surfactant: solvent The mass ratio of = 1:10, the volume ratio of solvent:cosolvent: 1:0.5;

[0041] (4) Add the slurry obtained in step (3) into the intermittent high-temperature and high-pressure reaction kettle, replace the air in the kettle with high-alcohol nitrogen after sealing the reaction, and heat the kettle body at 10°C / min to 180°C for 15 minutes;

[0042] (5) Continue to heat ...

Embodiment 2

[0050] (1) Mix 50g of municipal sludge with a moisture content of 85% and 1.125g of surfactant, wherein: dry basis sludge raw material: mass ratio of surfactant = 1:0.15, surfactant is CTAB: AEO 9 =3:7, to obtain uniformly mixed sludge;

[0051] (2) Stir the sludge homogeneously mixed in step (1) with a mechanical agitator at a rate of 200r / min for 1h to obtain sludge pretreated by surfactant;

[0052] (3) Mix 51.125g of sludge pretreated with surfactant, 150ml of deionized water, and 75ml of methanol in step (2) to make a slurry, wherein: dry basis of sludge pretreated with surfactant: solvent The mass ratio of = 1:10, the volume ratio of solvent:cosolvent: 1:0.5;

[0053] (4) Add the slurry obtained in step (3) into a batch-type high-temperature and high-pressure reaction kettle, replace the air in the kettle with high-alcohol nitrogen after sealing the reaction, and heat the kettle body at 10°C / min to 190°C for 20 minutes;

[0054] (5) Continue to heat the reactor to 340°...

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Abstract

The invention belongs to the technical field of environmental protection and new energy and relates to a novel method of improving quality of biological fuel produced by a biomass hydrothermal liquefaction method, in particular to a method of preparing bio-oil through raw material pretreatment and hydrothermal liquefaction. In order to solve the problems of lower bio-oil productivity and too complicated oil ingredients of the existing sludge hydrothermal liquefaction method, the novel method of preparing biological fuel through chemical pretreatment-hydrothermal liquefaction is developed according to a removal effect of two-step pretreatment of CTAB, AEO9 and subcritical water on bound water in sludge and a modification effect of a methanol cosolvent on the bio-oil.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and new energy, and in particular relates to a new method for improving the quality of biomass hydrothermal liquefaction biofuel, in particular to a method for preparing bio-oil through raw material pretreatment and hydrothermal liquefaction. Background technique [0002] With the continuous increase of my country's sewage treatment capacity, the output of sludge, a by-product of sewage treatment, is also increasing (the annual output of sludge exceeds 75 million tons). Sludge treatment and disposal are expensive and typically account for more than half of the operating costs of a wastewater treatment plant. Sludge contains proteins, polysaccharides, lipids, water-soluble organic matter, etc. As an excellent and renewable alternative carbon source for future biorefinery practices, it has great potential in the sustainable production of fuels. [0003] Pyrolysis and liquefaction a...

Claims

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Application Information

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IPC IPC(8): C10G1/00C02F11/00C02F101/20
CPCC10G1/002C02F11/00C02F11/002C02F2101/20C10G2300/1003
Inventor 杨天华刘兴双李润东李秉硕王伟云
Owner SHENYANG AEROSPACE UNIVERSITY
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