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Method for preparing high-grade liquid fuel by biomass catalytic pyrolysis

A liquid fuel, catalytic pyrolysis technology, applied in the direction of liquid carbon-containing fuel, fuel, special form of carbonization, etc., can solve the problems of limited reserves and output of precious metals, high price, difficult to realize industrial application, etc., to achieve significant catalytic hydrogenation effect, Low price and effect of reducing the generation of oligomers

Active Publication Date: 2017-01-11
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limited reserves and high prices of precious metals, it is difficult to realize industrial application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Use W with a particle size of about 0.2mm 2 N / AC(W 2 N load 12%) as catalyst, with 100g dry pine wood as raw material (average particle size is 2mm), the two are mechanically mixed, the ratio of catalyst and pine wood is 1:3, the mixed material is 470 ℃, under nitrogen atmosphere After rapid pyrolysis for 20s, the yield of liquid product was 51%. The collected liquid product was analyzed, and its moisture content was 15%, its higher heating value was 22.9MJ / kg, its pH value was 5.1, and its kinematic viscosity at 40°C was 17cSt.

Embodiment 2

[0025] Use Mo with a particle size of about 0.2mm 2 N / AC(Mo 2 N load 10%) as catalyst, with 100g dry pine wood as raw material (average particle size is 2mm), the two are mechanically mixed, the ratio of catalyst and pine wood is 1:4, the mixed material is 500 ℃, under nitrogen atmosphere After rapid pyrolysis for 15 s, the yield of liquid product was 53%. The collected liquid product was analyzed, and its moisture content was 16%, its higher heating value was 22.4MJ / kg, its pH value was 5.0, and its kinematic viscosity at 40°C was 16cSt.

Embodiment 3

[0027] Adopt the WP / AC (WP loading capacity 15%) that particle diameter is about 0.2mm as catalyzer, take 100g dry poplar as raw material (average particle diameter is 2mm), both are carried out mechanical mixing, the ratio of catalyzer and poplar is 1:3, the mixture was quickly pyrolyzed at 480°C under nitrogen atmosphere for 20s, and the yield of liquid product was 52%. The collected liquid product was analyzed, and its moisture content was 15%, its higher heating value was 22.8 MJ / kg, its pH value was 4.7, and its kinematic viscosity at 40° C. was 16 cSt.

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PUM

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Abstract

The invention belongs to the field of biomass energy utilization, and particularly relates to a method for preparing high-grade liquid fuel by biomass catalytic pyrolysis. According to the method, W2N / AC, Mo2N / AC, WP / AC or MoP / AC serving as a catalyst and biomass as the raw material are mechanically mixed, and are quickly pyrolyzed at 300-600 DEG C under an anaerobic condition, the pyrolyzed gas is quickly condensed to room temperature to obtain the liquid bio-oil fuel with high fuel quality. In the process of catalytically pyrolyzing biomass by catalyst, the effect of catalytic hydrodeoxygenation can be achieved, formation of phenol and aromatic hydrocarbon products can be promoted, and formation of acid and aldehyde products can be inhibited, so that the bio-oil grade is greatly promoted in comparison with conventional bio-oil. The catalyst is simple in preparation process and low in price, and is expected to replace noble metal catalyst, so that the cost can be reduced.

Description

technical field [0001] The invention belongs to the field of utilization of biomass energy, and in particular relates to a method for preparing high-grade liquid fuel by catalytic pyrolysis of biomass. Background technique [0002] The bio-oil obtained from conventional fast pyrolysis liquefaction of biomass is a mixture of water and hundreds of organic matter. As a new type of liquid fuel, conventional bio-oil cannot be used in diesel engines, gasoline engines and other power equipment like fossil fuels due to its shortcomings such as high oxygen content, low calorific value, strong corrosion, poor thermal stability, and incompatibility with fossil fuels. . In order to improve the grade of bio-oil, it needs to be upgraded and modified. It is a common method for bio-oil upgrading and modification to obtain high-grade bio-oil by introducing catalysts in the process of biomass pyrolysis to regulate the pyrolysis reaction path. [0003] The core of the high-grade bio-oil pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/00C10B53/00
CPCC10B53/00C10L1/00C10L2200/0469C10L2290/12
Inventor 陆强李文涛叶小宁周民星胡斌董长青
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)