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A multistage liquefaction process of biomass

A biomass and process technology, applied in the field of multi-stage liquefaction of biomass, can solve the problems of coke polycondensation and insufficient reaction, and achieve the effect of reducing the amount of coke

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

AI Technical Summary

Problems solved by technology

[0005] 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, Multistage Liquefaction Process of Biomass with High Liquid Yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A multi-stage liquefaction process for biomass, comprising the steps of:

[0055] (1) adding the amorphous iron oxyhydroxide after sulfidation treatment in the reactor to the animal oil to form a slurry, and passing hydrogen into the slurry to generate a primary hydrogenation reaction to obtain a primary hydrogenation product; (2 ) then add amorphous aluminum oxide loaded with Mo oxide and Ni oxide sulfided in the reactor to the primary hydrogenation product and feed hydrogen to generate a secondary hydrogenation reaction to obtain a secondary hydrogenation product. The secondary hydrogenation product is separated to finally obtain bio-oil; wherein, the pressure of the two controlled reactions is 13MPa, the temperature of the primary hydrogenation reaction is 350°C, and the temperature of the secondary hydrogenation reaction is 480°C.

Embodiment 2

[0057] A multi-stage liquefaction process for biomass, comprising the steps of:

[0058] (1) Wheat straw and corn straw are dried, pulverized and deashed, mixed with iron oxide-loaded biochar after sulfidation treatment to obtain a mixture, and the mixture is added to vegetable oil to form the slurry, which is added to the Introducing hydrogen into the slurry to generate a primary hydrogenation reaction to obtain a primary hydrogenation product; (2) then adding sulfided biomass loaded with W oxides and Ni oxides to the primary hydrogenation product Charcoal and hydrogen gas is introduced to produce a secondary hydrogenation reaction to obtain a secondary hydrogenation product, and the secondary hydrogenation product is finally separated to obtain bio-oil;

[0059] Among them, the pressure of the two controlled reactions is 15MPa, the temperature of the primary hydrogenation reaction is 330°C, and the temperature of the secondary hydrogenation reaction is 470°C.

[0060] In th...

Embodiment 3

[0071] A multi-stage liquefaction process for biomass, comprising the steps of:

[0072] (1) Reeds are dried, pulverized and deashed, mixed with biochar loaded with ferric oxyhydroxide after sulfidation treatment in the reactor to obtain a mixture, and the mixture is added to coal tar to form the slurry, Introduce hydrogen into the slurry to produce a primary hydrogenation reaction to obtain a primary hydrogenation product; (2) then add Pd oxides and Ni oxides loaded with sulfide in the reactor to the primary hydrogenation product Biomass charcoal and pass through hydrogen to take place secondary hydrogenation reaction, obtain secondary hydrogenation product, described secondary hydrogenation product finally obtains bio-oil after separation;

[0073] Among them, the pressure of the two controlled reactions is 17MPa, the temperature of the primary hydrogenation reaction is 310°C, and the temperature of the secondary hydrogenation reaction is 460°C. In the slurry, the content o...

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Abstract

The invention relates to the field of bioenergy, and in particular relates to a multi-stage liquefaction process of biomass. The multi-stage liquefaction process comprises the following steps: preparing slurry containing a first catalyst and the biomass, and introducing hydrogen into the slurry to perform first-order hydrogenation reaction; and then adding a second catalyst, and introducing the hydrogen into the slurry to perform second-order hydrogenation reaction to finally produce bio-oil; wherein the pressure for the first-order hydrogenation reaction and the pressure for the second-orderhydrogenation reaction both are 13 to 25 MPa, the temperature for the first-order hydrogenation reaction is 200 to 350DEG C, and the temperature for the second-order hydrogenation reaction is 380-480DEG C. The multi-stage liquefaction process of the biomass has the advantages of high reaction efficiency, no coke production and high liquid yield.

Description

technical field [0001] The invention relates to the field of bioenergy, in particular to a multistage liquefaction process of biomass. Background technique [0002] Biomass refers to all organic substances formed directly or indirectly by photosynthesis of green plants, including plants, animals, microorganisms and their excretion and metabolites. It is renewable, low-pollution and widely distributed. Therefore, from the perspective of energy security Starting from environmental protection, the development and utilization of biomass has become the strategic focus of the current development of renewable energy. [0003] Biomass liquefaction technology is an important part of the utilization of biomass resources. At present, it can be divided into two categories: indirect liquefaction and direct liquefaction. Among them, biomass direct liquefaction technology refers to the use of hydrolysis, ultra- Critical liquefaction or hydrogen gas, inert gas, etc., directly liquefy bioma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/00C10G1/02C10G1/06C10G1/08
CPCC10G1/006C10G1/02C10G1/065C10G1/083C10G1/086C10G2300/1011C10G2300/4006C10G2300/4012
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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