A method for direct liquefaction of biomass

一种生物质、直接的技术，应用在化学仪器和方法、分离方法、生物燃料等方向，能够解决轻质油中残渣固含量高、浪费液体物质、影响液体物质收率等问题，达到提高液体收率、提高收率、降低残渣固含量的效果

Active Publication Date: 2020-06-16
BEIJING HUASHI UNITED ENERGY TECH & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned technology directly liquefies the biomass raw material into a liquid substance through two steps of hydroconversion step, and after the second hydroconversion step is completed, the residue is separated from the bottom of the reactor. This operation method will bring the following disadvantages: 1) More liquid substances will be entrained in the residue, which wastes the liquid substance and affects the yield of the liquid substance; 2) Part of the residue is suspended in the liquid phase and enters the next process, resulting in the solid content of the residue in the final light oil high

Method used

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  • A method for direct liquefaction of biomass

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Experimental program
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Effect test

Embodiment 1

[0073] The method for direct liquefaction of biomass provided by the embodiments of the present invention comprises the following steps:

[0074] (1) The biomass 1 enters the biomass pretreatment device 2 to be dried and pulverized sequentially to obtain pulverized materials with a particle size of 10 μm, wherein the pulverized materials are wheat straw particles;

[0075] (2) The hydrogenation catalyst raw material 3 enters the hydrogenation catalyst preparation device 4 for loading, and obtains a hydrogenation catalyst (its particle size is 20 μm, and the loading capacity is 15 wt %) loaded with Mo oxide and Ni oxide on the amorphous alumina. , mixing the hydrogenation catalyst, the pulverized material and sulfur in the biomass slurry preparation device 5 at a mass ratio of 3:100:0.3 to obtain the mixed material;

[0076] (3) mixing the mixture with a hydrogen-donating solvent to obtain a biomass slurry with a solid content of 25 wt%, wherein the hydrogen-donating solvent is...

Embodiment 2

[0085] The method for direct liquefaction of biomass provided by the embodiments of the present invention comprises the following steps:

[0086] (1) The biomass 1 enters the biomass pretreatment device 2 to be dried and pulverized sequentially to obtain pulverized materials with a particle size of 100 μm, wherein the pulverized materials are reed straw particles;

[0087] (2) Hydrogenation catalyst raw material 3 enters in hydrogenation catalyst preparation device 4 and carries out loading, obtains the hydrogenation catalyst (its particle size is 100 μ m-150 μ m, and loading capacity is 10wt) that is loaded with W oxide and Ni oxide on the amorphous alumina %), mixing the hydrogenation catalyst, the pulverized material and sulfur in the biomass slurry preparation device 5 in a mass ratio of 1:100:0.4 to obtain a mixed material;

[0088] (3) mixing the mixture with a hydrogen-donating solvent to obtain a biomass slurry with a solid content of 10 wt%, wherein the hydrogen-donat...

Embodiment 3

[0097] The method for direct liquefaction of biomass provided by the embodiments of the present invention comprises the following steps:

[0098] (1) The biomass 1 enters the biomass pretreatment device 2 and is sequentially dried and pulverized to obtain pulverized materials with a particle size of 500 μm, wherein the pulverized materials are reed straw particles;

[0099] (2) The hydrogenation catalyst raw material 3 enters the hydrogenation catalyst preparation device 4 for loading, and obtains a hydrogenation catalyst (its particle size is 100 μm-150 μm, and the load capacity is 25wt) that is loaded with Pd oxide and Ni oxide on the amorphous alumina %), mixing the hydrogenation catalyst, amorphous iron oxide, the pulverized material and sulfur in the biomass slurry preparation device 5 in a mass ratio of 2:2:100:0.3 to obtain the mixed material;

[0100] (3) mixing the mixture with a hydrogen-donating solvent to obtain a biomass slurry with a solid content of 50 wt%, wher...

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Abstract

The invention discloses a method for direct liquefaction of biomass. The method comprises the following steps: (1) mixing biomass, a hydrogenation catalyst and a hydrogen-donating solvent to prepare a biomass slurry; (2) performing a first liquefaction reaction on the biomass slurry and hydrogen, and collecting the first reaction product; (3) carry out the second liquefaction reaction of the first reaction product and hydrogen, and collect the second reaction product; (4) carry out the first gas-liquid separation on the second reaction product at 290-460 ° C, and collect the first liquid phase and the second reaction product A gas phase; (5) performing a second gas-liquid separation on the first gas phase at 30-60°C, collecting the second liquid phase, mixing the first liquid phase and the second liquid phase to obtain a liquid phase; (6) performing a liquid phase on the liquid phase The first distillation collects the light distillate and the heavy distillate; (7) performs the second distillation on the heavy distillate to separate the distillate oil and residue, and the light distillate and distillate oil are liquids obtained from liquefaction. The yield of the liquid obtained by the above method is high, and the residue solid content in the liquid is low.

Description

technical field [0001] The invention belongs to the technical field of biomass liquefaction, and in particular relates to a method for directly liquefying biomass. Background technique [0002] In a broad sense, biomass refers to all plants, microorganisms, and animals that feed on plants and microorganisms and their wastes; Straw, trees and other lignocellulose (lignin for short), leftovers from agricultural product processing, agricultural and forestry waste, and livestock manure and waste in the production process of animal husbandry. Common representative biomass includes crops, crop waste, wood, wood waste, and animal manure. Because of its renewability, low pollution, and wide distribution, it has become an important part of renewable energy. Therefore, how to efficiently develop and utilize biomass energy will play a very important role in solving energy and ecological environment problems. positive effect. [0003] At present, the ways to develop and utilize bioma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/00C10G1/08C10G1/02
CPCC10G1/006C10G1/02C10G1/065C10G1/083C10G1/086C10G2300/1011C10G2300/4006C10G2300/4012B01D3/10B01D3/143C10G1/002C10G7/00C10G45/00C10G2300/1014C10G2300/42C10G2300/44Y02E50/10Y02P30/20C10B53/02C10G1/00C10G65/02
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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