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One-pot liquefaction process of biomass

A biomass and solid biomass technology, applied in the field of biomass one-pot liquefaction process, can solve problems such as insufficient reaction and coke polycondensation, and achieve the effects of avoiding coke formation, promoting hydrolysis, and improving hydrogenation performance.

Active Publication Date: 2020-03-17
BEIJING HUASHI UNITED ENERGY TECH & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of insufficient hydrolysis, cracking, hydrogenation and other reactions in the existing biomass liquefaction process and serious coke polycondensation phenomenon, and then provide a high reaction efficiency, no coke production, One-pot liquefaction process of biomass with high liquid yield

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  • One-pot liquefaction process of biomass

Examples

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Effect test

Embodiment 1

[0043] The present embodiment provides a kind of preparation method of the second catalyst, comprising the following steps:

[0044] S1. After acidification or basification of dry distillation biomass charcoal, the second biomass charcoal carrier is obtained; specifically: H in the acidic medium of the acidification treatment + The concentration of the substance is 5mol / L; the volume ratio of the dry distillation biochar to the acidic medium is 1:15, the acidification temperature is 80°C, and the acidification time is 10h; - The concentration of the substance is 0.5mol / L; the volume ratio of the carbonized biomass charcoal to the alkaline medium is 1:5, the alkalization temperature is 30°C, and the alkalization time is 10h.

[0045] S2. Vibrating and / or plane grinding and / or ball milling the second active component and the second biochar carrier to obtain a second catalyst with a particle size of 100 μm-200 μm.

[0046] The second active component is the oxides of Mo and W, a...

Embodiment 2

[0048] The one-pot liquefaction process of biomass provided in this embodiment comprises the following steps:

[0049] (1) sending corn stalks into a dryer to dry until the water content is 3wt%, and then pulverizing them in a pulverizer to a particle size of 1-50 μm, and then obtaining straw particles after deashing;

[0050] (2) Mix the amorphous alumina (with a particle size of 5 μm-50 μm) loaded with Mo oxide and Co oxide with the straw particles and sulfur in step (1) in a mass ratio of 5:100:0.3 A mixture is obtained, which is added to medium-low temperature coal tar to form a slurry containing 10 wt% of biomass;

[0051] (3) Inject hydrogen at 60°C and 13MPa into the slurry for the first time until the volume ratio of high-pressure hydrogen to slurry is 50:1, then raise the temperature of the slurry to 200°C in the heat exchanger, and then inject the second Inject hydrogen at 200°C and 13MPa once, and control the volume ratio of hydrogen and slurry injected twice to re...

Embodiment 3

[0053] The one-pot liquefaction process of biomass provided in this embodiment comprises the following steps:

[0054] (1) sending the reed into a drier and drying it until the water content is 5wt%, then pulverizing it in a pulverizer to a particle size of 20-1000 μm, and then obtaining reed particles after deashing;

[0055] (2) Biomass charcoal (with a particle size of 100 μm-150 μm) loaded with W oxide and Ni oxide, iron oxyhydroxide, reed particles and sulfur in step (1) are in a mass ratio of 2:2:100: The ratio of 0.4 is mixed to obtain a mixture, and the mixture is added to vegetable oil to form a slurry containing 30wt% of biomass;

[0056] (3) Inject hydrogen at 70°C and 20MPa into the slurry for the first time until the volume ratio of high-pressure hydrogen to slurry is 100:1, then raise the temperature of the slurry to 250°C in the heat exchanger, and then inject the second Inject hydrogen gas at 250°C and 20MPa once, and control the volume ratio of the hydrogen g...

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Abstract

The invention discloses a one-pot liquefaction process of biomass, which includes the following steps: preparing a slurry containing a catalyst, a vulcanizing agent and biomass, passing hydrogen gas into the slurry to react, and controlling the reaction pressure to 13-25 MPa. The reaction temperature is 300 to 500°C, and bio-oil is finally produced; the catalyst includes amorphous alumina or biomass carbon loaded with active components, and the active components are selected from oxides of metals in Group VIB, VIIB or VIII of the periodic table of elements. one or more of them. The process provided by the invention has high reaction efficiency, no coke generation and high liquid yield.

Description

technical field [0001] The invention relates to the technical field of bioenergy conversion, in particular to a one-pot liquefaction process of biomass. Background technique [0002] Coal, crude oil, natural gas, oil shale and other fossil non-renewable energy sources are becoming increasingly exhausted with the rapid development of social economy, and the CO produced after their combustion 2 , SO 2 , NO x The increasingly serious environmental pollution caused by such pollutants has forced human beings to seriously consider ways to obtain energy and methods to improve the environment. Biomass is a kind of renewable energy, which has huge potential and advantages in meeting energy demand, reducing environmental pollution, and improving energy structure. Biomass refers to all organic substances formed by photosynthesis of green plants that can be directly or indirectly used , including plants, animals, microorganisms and their excretion and metabolites, which are renewable...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/08
CPCC10G1/06C10G1/086C10G2300/1011Y02P30/20C10G2300/202C10G2300/1014C10G1/00C10G1/08
Inventor 林科李林郭立新崔永君江莉龙
Owner BEIJING HUASHI UNITED ENERGY TECH & DEV
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