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Biomass alcoholysis method and biomass alcoholysis oil preparation method

A bio-alcohol and bio-mass technology, applied in the preparation of liquid hydrocarbon mixtures, petroleum industry, refining to remove heteroatoms, etc., can solve the problems of poor stability, complex composition, and strong corrosion of bio-oil, and achieve high liquefaction rate , the effect of high yield

Inactive Publication Date: 2015-01-21
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Among them, the bio-oils obtained from high-pressure hydrothermal liquefaction and rapid pyrolysis are derived from acids, aldehydes, alcohols, esters, ketones, sugars, phenols, o-cresols, eugenol, furans, lignin-derived substituted phenols, extracts The mixture of terpene and water has a complex composition of hundreds of species, resulting in poor stability, strong corrosion and complex chemical composition of bio-oil, which greatly hinders the wide application of bio-oil

Method used

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  • Biomass alcoholysis method and biomass alcoholysis oil preparation method
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  • Biomass alcoholysis method and biomass alcoholysis oil preparation method

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preparation example Construction

[0026] The present invention also provides a kind of preparation method of biomass alcoholysis oil, this method comprises:

[0027] (1) Carry out alcoholysis of biomass;

[0028] (2) Separating the liquefied product obtained by alcoholysis to obtain light components and heavy components; performing water vapor extraction on the light components to separate the alcohol solvent to obtain the extracted product; The final product is mixed with the heavy component to obtain a mixture;

[0029] (3) contacting the mixture and the hydrogen-donating compound with a hydrofinishing catalyst under hydrofinishing conditions;

[0030] Wherein, the method for carrying out alcoholysis of biomass in step (1) is the aforementioned method for alcoholysis of biomass in the present invention.

[0031] Here, the liquefied product obtained by alcoholysis is separated to obtain light components and heavy components. The light components and heavy components are mainly distinguished according to the...

Embodiment 1

[0070] 1.1 Biomass alcoholysis

[0071] Add 300g of n-octanol, 9g of concentrated sulfuric acid with a concentration of 95.98% by weight and 100g of masson pine powder (the collection location of masson pine is Taiyang Village, Heping Township, Yuexi County, Anhui Province, passed through a 0.45mm aperture screen, and the water content is 4% by weight) Put it into a 2L airtight reaction kettle equipped with a stirrer and a temperature controller, heat it after sealing, keep the temperature in the reaction kettle at 130-150°C, and keep the pressure at 0.42MPa, stir and react for 1h, then cool naturally to room temperature to obtain Biomass liquefaction products (including unreacted residues).

[0072] 1.2 Separation of liquefied products

[0073] The biomass liquefaction product was centrifuged at 1800rpm for 15 minutes to obtain 225g of light components with a viscosity of 4cP (20°C) and 184g of heavy components with a viscosity greater than 1,000,000cP (20°C), (heavy compone...

Embodiment 2

[0082] Biomass alcoholysis according to the method described in Example 1—separation of liquefied products—recovery of alcohol solvent in light components—hydrogenation of water vapor extraction residue and heavy components, the difference is that steps: 1.1 Production During the alcoholysis of the substance, 300g of n-octanol was replaced by 300g of n-heptanol. The biomass liquefaction rate, light weight rate and coking rate are shown in Table 4.

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Abstract

The invention provides a biomass alcoholysis method. The method comprises the step that an alcohol solvent is in contact with biomass under closed conditions in the presence of a biomass liquefaction catalyst, wherein the boiling point of the alcohol solvent is not less than the temperature of the alcohol solvent in contact with the biomass at normal pressure. The biomass alcoholysis method disclosed by the invention is high in biomass liquefaction rate (peaking at 83%); and in the biomass alcoholysis oil preparation method disclosed by the invention, the production rate of biomass alcoholysis oil is high (as high as over 30%), and prepared biomass alcoholysis oil has the advantages of high calorific value, low viscosity, low acid value, water yield mark, and capability of being completely mixed with gasoline (diesel), and the like; and the prepared biomass alcoholysis oil also can be directly used as fuel oil.

Description

technical field [0001] The invention relates to a biomass alcoholysis method and a biomass alcoholysis oil preparation method. Background technique [0002] With the depletion of petroleum resources and people's emphasis on environmental protection, obtaining liquid fuels from renewable biomass has attracted more and more attention. Traditional biomass liquefaction methods for preparing liquid fuels mainly include hydrolysis fermentation, rapid pyrolysis, high-pressure hydrothermal method and solvent dissolution method. [0003] Among them, the hydrolysis fermentation method uses cellulase to directly convert cellulose into ethanol fuel. This method has high cost of cellulase and difficult separation and purification of ethanol. [0004] The high-pressure hydrothermal liquefaction process was first developed by Shell Company and is in the process of commercial application. The liquefaction process conditions are: reaction temperature 300-350 ℃, pressure 12-18MPa, reaction t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/00C10G45/04
Inventor 秦特夫邹献武
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY