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Method for preparing biological oil by liquefying biomass under atmospheric pressure by using solid acid catalyst

A solid acid catalysis, biomass waste technology, applied in the preparation of liquid hydrocarbon mixture, petroleum industry and other directions, can solve the problems of unrecoverable glycerol, high equipment requirements, application limitations, etc., achieves significant environmental protection value, high reactivity, Good regeneration performance

Active Publication Date: 2013-04-03
如东文园投资开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages are: high temperature, high pressure, high requirements on equipment, high energy consumption; solvents are easy to pollute the environment
However, glycerol cannot be recycled, so its application is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: make catalyst liquefaction example with solid phosphoric acid in ethylene glycol (EG) with wood:

[0036] A biomass atmospheric pressure liquefaction technology, comprising the following process steps:

[0037] (1) Pretreatment of raw materials:

[0038] The wood is pulverized with a pulverizer, and 20-80 mesh wood powder is sieved with a sieve, and the wood powder is dried at 105° C. to constant weight. The mass ratio of wood powder to liquefier ethylene glycol is 1:7, and the mass ratio of catalyst solid phosphoric acid to liquefier ethylene glycol is 1:100.

[0039] (2) Atmospheric pressure liquefaction of wood

[0040] Add ethylene glycol and solid phosphoric acid into a three-necked flask with a stirrer and a thermometer, heat it in an oil bath until the temperature is 180°C, add wood powder into the flask, and stir at a constant speed of 400r / min with a stirrer. React for 120min. When the reaction reached the predetermined time, the three-neck fl...

Embodiment 2

[0046] Embodiment 2: Take the liquefaction of wheat straw as a catalyst in ethylene glycol with solid phosphoric acid as an example:

[0047] A biomass atmospheric pressure liquefaction technology, comprising the following process steps:

[0048] (1) Pretreatment of raw materials:

[0049] The wheat straw is pulverized with a pulverizer, and the wood powder of 20-80 mesh is screened out with a sieve, and the wheat straw is dried at 105° C. to a constant weight. The mass ratio of wheat straw to liquefier ethylene glycol is 1:5, and the mass ratio of catalyst solid phosphoric acid to liquefier ethylene glycol is 10:100.

[0050] (2) Atmospheric pressure liquefaction of wheat straw

[0051] Add ethylene glycol and solid phosphoric acid into a three-necked flask equipped with a stirrer and a thermometer, and when heated to a temperature of 170°C in an oil bath, add wheat straw into the flask, stir at a constant speed of 400r / min with a stirrer, and react 100min. When the react...

Embodiment 3

[0057] Embodiment 3: use SO in ethylene carbonate (EC) with the sawdust of wood processing plant 4 2- / ZrO 2 Take catalyst liquefaction as an example:

[0058] A biomass atmospheric pressure liquefaction technology, comprising the following process steps:

[0059] (1) Pretreatment of raw materials:

[0060]The sawdust is pulverized with a pulverizer, and the 20-80 mesh wood powder is sieved with a sieve, and the wood powder is dried at 105° C. to constant weight. The mass ratio of sawdust and liquefaction agent EC is 1:5, catalyst SO 4 2- / ZrO 2 The mass ratio with liquefier EC is 3:100.

[0061] (2) Atmospheric pressure liquefaction of sawdust

[0062] Combine EC and SO 4 2- / ZrO 2 Add it into a three-necked flask equipped with a stirrer and a thermometer, and when it is heated in an oil bath to a temperature of 160°C, add sawdust into the flask, stir at a constant speed of 400r / min with a stirrer, and react for 80min. When the reaction reached the predetermined t...

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Abstract

The invention discloses a method for preparing biological oil by liquefying biomass under atmospheric pressure by using a solid acid catalyst, belonging to the field of preparation of chemical engineering high polymer material products and biological fuels. The method comprises the following steps: putting mixed liquefier and liquefying catalyst in a container, heating to 120-180 DEG C, adding biomass or biomass waste, liquefying for 30-120 minutes, cooling to room temperature, dissolving the liquefied mixture in a solvent until the liquid product is sufficiently dissolved, carrying out vacuum filtration to implement solid-liquid separation, and carrying out rotary evaporation to concentrate the liquid product. The method can be operated under atmospheric pressure, has the advantages of simple technique, high heat efficiency, high liquid product yield and high liquefying rate (up to higher than 70%); the hydroxyl value of the liquefied product of various types of agricultural and forestal biomass waste is up to 260-340mg KOH / g; and the heat value is up to 29-33 KJ / g. The invention can lower the reaction energy consumption and the cost.

Description

technical field [0001] The invention discloses a method for catalyzing liquefaction of agricultural and forestry biomass waste with solid acid under normal pressure, relates to a preparation method of biomass liquefied oil, and belongs to the fields of chemical polymer material products and biofuel preparation. Background technique [0002] With the rapid development of science and technology, the development of biomass energy will rely on innovative technologies to achieve greater development. The new technology of biomass energy, especially the research on rapid liquefaction of atmospheric pressure to produce liquefied oil, once a breakthrough is made, will greatly promote the development and application of biomass energy, especially in remote rural areas. Liquefaction into "biological crude oil" that is convenient for transportation and rich in industrial processing value, condenses the long geochemical process in tens of minutes, which is beneficial to building a well-of...

Claims

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Application Information

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IPC IPC(8): C10G1/00
Inventor 李为民徐庆锐邱玉华任庆功郭登峰姚超
Owner 如东文园投资开发有限公司
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