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Method for continuously catalyzing and degrading lignin bio-oil into aromatic hydrocarbons and naphthenic hydrocarbons with micro-channel reaction device

A micro-channel reaction and micro-channel reactor technology, applied in the field of aromatic hydrocarbons and naphthenes, can solve the problems of poor selectivity of aromatic hydrocarbons and naphthenes, and achieve good reaction effect, large specific surface area, fast heat transfer and mass transfer rate Effect

Inactive Publication Date: 2016-11-23
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved in the present invention is to provide a method for continuously catalytically degrading lignin bio-oil into aromatic hydrocarbons and naphthenes by using a microchannel reaction device, so as to solve the problem of poor selectivity of aromatic hydrocarbons and naphthenes prepared by using lignin in the prior art question

Method used

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  • Method for continuously catalyzing and degrading lignin bio-oil into aromatic hydrocarbons and naphthenic hydrocarbons with micro-channel reaction device
  • Method for continuously catalyzing and degrading lignin bio-oil into aromatic hydrocarbons and naphthenic hydrocarbons with micro-channel reaction device
  • Method for continuously catalyzing and degrading lignin bio-oil into aromatic hydrocarbons and naphthenic hydrocarbons with micro-channel reaction device

Examples

Experimental program
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Effect test

Embodiment 1～2

[0030] Accurately weigh 2g of enzymatic lignin in the reactor, add 50ml of methanol (Example 1) or ethanol (Example 2), add 0.5g of magnesium aluminum hydrotalcite (Mg-Al HT) to it, and feed 2MP hydrogen, reacted at 220°C for 8 hours, filtered after the reaction, removed the solid alkali catalyst and residue, and took the filtrate to detect the components.

[0031] Selectivity and conversion rate of table 1 embodiment 1~2

[0032] Example

Embodiment 3～4

[0034] Accurately weigh 2g of enzymatic lignin in the reactor, add 50ml of methanol therein, add 0.5g of magnesium aluminum hydrotalcite (Mg-Al HT) (embodiment 3), calcium oxide (CaO) (embodiment 4) wherein ), feed 3MP hydrogen, react at 220°C for 8h, filter after the reaction, remove the solid alkali catalyst and residue, and take the filtrate to detect components.

[0035] Selectivity and conversion rate of table 2 embodiment 3~4

[0036] Example

Embodiment 5～6

[0038] Accurately weigh 2g of enzymatic lignin in the reaction kettle, add 50ml of methanol to it, add 0.25g of magnesium aluminum hydrotalcite (Mg-Al HT) to it, feed 3MP hydrogen, and react at 200°C (Example 5) React at 220° C. (Example 6) for 8 hours, filter after the reaction, remove the solid base catalyst and residue, and take the filtrate to detect components.

[0039] Selectivity and conversion rate of table 3 embodiment 5-6

[0040] Example

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Abstract

The invention provides a method for continuously catalyzing and degrading lignin bio-oil into aromatic hydrocarbons and naphthenic hydrocarbons with a micro-channel reaction device. The method comprises the following steps that firstly, in an alcohols solvent, a base catalyst is used for catalyzing lignin to be hydrogenated and depolymerized into phenolic bio-oil; secondly, the base catalyst in the phenolic bio-oil is filtered out, the phenolic bio-oil and hydrogen are pumped into the micro-structure reaction device respectively at the same time and mixed evenly and then react in the micro-channel reaction device, and the phenolic bio-oil is hydrocracked into aromatic hydrocarbons or naphthenic hydrocarbons, wherein the micro-channel reaction device is filled with a dual-functional catalyst; thirdly, aromatic hydrocarbons or naphthenic hydrocarbons are extracted from reaction liquor.

Description

technical field [0001] The invention belongs to the technical field of biomass degradation new energy, and specifically relates to a method for continuously catalytically degrading lignin bio-oil into aromatic hydrocarbons and naphthenes by using a microchannel reaction device. Background technique [0002] Nowadays, with the continuous consumption of non-renewable resources such as petrochemical resources, the search for new sustainable resources has received extensive attention. Among them, biomass resources have become an important industry competing for the development of countries all over the world due to their rich sources of raw materials, short regeneration cycle, and reduction of greenhouse gas emissions. Among them, cellulose and hemicellulose in lignocellulose each account for (40-50%; 20-30%), and lignin accounts for about 15-25%, but most of the lignin is currently limited to low-value binders. And enhancer, and most of them are discharged into the river along...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C1/20C07C15/02C07C13/18
CPCC07C1/20C07C15/02C07C13/18
Inventor 朱晨杰应汉杰郭凯沈涛唐成伦欧阳平凯
Owner NANJING UNIV OF TECH
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