Bio-oil and preparation method thereof

A technology of biomass oil and biomass, which is applied in the direction of biofuel, petroleum industry, special form of dry distillation, etc., can solve the problems of high production cost and low production efficiency

Inactive Publication Date: 2016-06-22
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these technologies still face problems such as low production efficiency and high production costs due to catalyst coking and deactivation

Method used

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  • Bio-oil and preparation method thereof

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preparation example Construction

[0036] The invention provides a kind of preparation method of biomass oil, comprises the following steps,

[0037] 1) After mixing the pulverized lignocellulosic biomass and an aqueous ammonia source substance solution, the loaded biomass is obtained;

[0038] 2) Under anaerobic conditions, after pyrolyzing the loaded biomass obtained in the above steps, pyrolysis gas is obtained;

[0039] 3) After condensing the pyrolysis gas obtained in the above steps, biomass oil is obtained.

[0040] In the present invention, the selection and ratio of the raw materials and other preferred principles are consistent with those of the aforementioned biomass oil, and will not be repeated here.

[0041] In the invention, firstly, the pulverized lignocellulosic biomass is mixed with an ammonia source substance aqueous solution to obtain a loaded biomass.

[0042] The present invention is not particularly limited to the lignocellulosic biomass. The lignocellulosic biomass known to those skill...

Embodiment 1

[0054] Configure urea with a mass fraction of 10%, then immerse 200g of rice husk in 1000ml of the above solution, stir for 4 hours under the action of a magnetic stirrer, then filter and dry at 50°C for 24 hours to obtain urea-loaded biomass raw material.

[0055] Weigh 20g of loaded urea-type biomass raw material and pyrolyze it for 20min at 470°C under a nitrogen atmosphere to obtain a liquid (biomass oil) yield of 51.3%.

[0056] The bio-oil obtained in the above steps is detected, and gas chromatographic analysis shows that the bio-oil does not contain small molecule carbonyl compounds such as glycolaldehyde and methylglyoxal, and the content of nitrogen-containing heterocyclic compounds in the organic liquid product is 8.5%.

Embodiment 2

[0058] Configure ammonium dihydrogen phosphate with a mass fraction of 15%, then immerse 200g of rice husk in 1000ml of the above solution, stir for 3 hours under the action of a magnetic stirrer, then filter and dry at 80°C for 16 hours to obtain loaded phosphoric acid Ammonium dihydrogen type biomass raw material.

[0059] Weighed 20 g of ammonium dihydrogen phosphate-type biomass raw material, and pyrolyzed it at 490° C. for 15 minutes under a nitrogen atmosphere to obtain a liquid product yield of 38.3%.

[0060] The bio-oil obtained in the above steps is detected, and gas chromatographic analysis shows that the bio-oil does not contain small molecular carbonyl compounds such as glycolaldehyde and methylglyoxal, and the content of nitrogen-containing heterocyclic compounds in the organic liquid product is 5.65%.

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Abstract

The invention provides bio-oil which contains a nitrogen-containing heterocyclic compound. The bio-oil contains the nitrogen-containing heterocyclic compound with the high added value and does not contain a micromolecular carbonyl compound and polymers and derivatives thereof, therefore, the bio-oil quality is improved, the bio-oil application range is widened, and the important significance on the chemical application aspect of the bio-oil is especially achieved.

Description

technical field [0001] The invention belongs to the technical field of biomass energy, and in particular relates to a biomass oil and a preparation method thereof. Background technique [0002] With the depletion of fossil resources and the strong support of the whole society for the development of renewable energy, biomass energy technology has attracted extensive attention from scholars from all over the world in recent years. Among them, biomass pyrolysis liquefaction technology is an effective means to convert biomass into liquid, solid and gas products, and realize efficient utilization of biomass. ) to participate in the process of cracking high-molecular polymers that make up biomass into low-molecular organic matter by heating to generate solids (coke), liquid products (biomass oil) and gas products (synthesis gas). The liquid product, also known as bio-oil (biomass oil), is the main product of biomass pyrolysis. Bio-oil also has many characteristics such as wide s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/02
CPCC10B53/02Y02E50/10
Inventor 朱锡锋李凯张立强朱昌朋
Owner UNIV OF SCI & TECH OF CHINA
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