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Method for preparing biomass base liquid fuel by using ordered mesoporous ZrO2-base catalyst

A technology for liquid fuels and biomass, which is applied in the field of preparing biomass-based liquid fuels by using ordered mesoporous ZrO2-based catalysts, can solve problems such as poor catalytic activity, and achieve single pore size distribution, large specific surface area, and highly ordered pore structure. Effect

Inactive Publication Date: 2014-08-06
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ordered mesoporous catalysts reported in the current research are all concentrated on silicon-based catalysts such as MCM-41 and SBA-15. From the atomic level, the framework of these catalysts is composed of amorphous SiO 2 composed of, with and SiO 2 Same chemical properties, poorer catalytic activity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Ordered mesoporous ZrO 2 Preparation of catalyst: measure 45.5g of zirconium sulfate (ZrSO 4 4H 2 (2) and 15g of cetyltrimethylammonium bromide were dissolved in 600mL of deionized water, and stirred for 2h, then moved into a stainless steel reaction kettle lined with polytetrafluoroethylene, and aged for 2 days at 100°C. The white precipitate was obtained by filtration, and dried at 100°C for 6 hours in an ordinary blast drying oven, and then the dried powder was placed in a 0.5 mol / L phosphoric acid solution and refluxed for 8 hours; after filtration, the filter residue was placed in an ordinary blast drying oven at Drying at 100°C for 12h, followed by calcination in a muffle furnace at 500°C for 3h, yielded 16g of ordered mesoporous ZrO 2 .

[0018] The above ordered mesoporous ZrO 2 Grind to a particle size of about 0.5 mm, and put them all into a fixed-bed catalytic reactor for online catalytic cracking experiments.

[0019] Using dry poplar with a particle si...

Embodiment 2

[0022] Measure the palladium nitrate dihydrate of 0.58g and be dissolved in deionized water, the ordered mesoporous ZrO prepared in 15g embodiment 1 2 Add the powder into the above salt solution, slowly drop ammonia water under stirring until the pH value reaches 9, continue to stir at room temperature for 12 hours, filter and dry at 100°C for 3 hours, and finally reduce the dried product at 280°C under hydrogen and nitrogen atmosphere 3h, that is, 15.2g of ordered mesoporous ZrO supported by Pd 2 (Pd / ZrO 2 ), wherein the mass percentage of Pd is 1.5%.

[0023] The above ordered mesoporous Pd / ZrO 2 Grind to a particle size of about 0.5 mm, and put them all into a fixed-bed catalytic reactor for online catalytic cracking experiments.

[0024] Using dry poplar with a particle size of about 2mm as raw material, rapid pyrolysis is carried out at 500°C in a nitrogen atmosphere. After gas-solid separation, the high-temperature pyrolysis gas is directly passed into the ordered mes...

Embodiment 3

[0027] Ordered mesoporous ZrO 2 Preparation of catalyst: measure 45.5g of zirconium sulfate (ZrSO 4 4H 2 (2) and 15g of cetyltrimethylammonium bromide were dissolved in 600mL of deionized water, and stirred for 2h, then moved into a stainless steel reaction kettle lined with polytetrafluoroethylene, and aged for 2 days at 90°C. The white precipitate was obtained by filtration, and dried in an ordinary blast drying oven at 100°C for 6 hours, and then the dried powder was placed in a 1.0 mol / L phosphoric acid solution to reflux for 6 hours; after filtration, the filter residue was placed in an ordinary blast drying oven at Drying at 100°C for 12h, followed by calcination in a muffle furnace at 500°C for 3h, yielded 16g of ordered mesoporous ZrO 2 .

[0028] The above ordered mesoporous ZrO 2 Grind to a particle size of about 0.5 mm, and put them all into a fluidized bed catalytic reactor for online catalytic cracking experiments.

[0029] Using natural air-dried poplar wood...

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Abstract

The invention, belonging to the technical field of utilizing biomass energy, particularly relates to a method for preparing a biomass base liquid fuel by using an ordered mesoporous ZrO2-base catalyst, comprising the following steps: using pure ordered mesoporous ZrO2 or Pd-supported ordered mesoporous ZrO2 as the catalyst, carrying out rapid pyrolysis on the biomass under anaerobic conditions at 400-600 DEG C, then letting the high temperature pyrolysis gases in a reactor containing the catalyst, letting the pyrolysis products under the effect of the catalyst be subject to cracking, dehydration, rearrangement and other reactions, and then rapidly condensing the pyrolysis gases to room temperature and collecting the liquid products to obtain the liquid fuel with good quality. According to the invention, by using the ordered mesoporous ZrO2-base catalyst, the macromolecular oligomer in the pyrolysis products can be effectively promoted to generate cracking reaction, the inactivation of the catalyst caused by the blockage of the pore channels is prevented, and aldehyde, acid and other ingredients which have negative effects on the properties of the liquid fuel product in the pyrolysis products can be effectively reduced.

Description

technical field [0001] The invention belongs to the field of utilization of biomass energy, in particular to a method utilizing ordered mesoporous ZrO 2 A method for preparing a biomass-based liquid fuel based on a catalyst. Background technique [0002] Biomass rapid pyrolysis is a process in which biomass is rapidly thermally decomposed under anaerobic conditions and then the pyrolysis products are rapidly condensed to obtain liquid bio-oil. This is a new and efficient biomass energy utilization technology. As a new type of liquid product, bio-oil can be used as liquid fuel, and can also be used for extraction or preparation of various chemicals. However, primary bio-oil has poor fuel characteristics, mainly as follows: high moisture content, high oxygen content, low calorific value, acidity and corrosion, poor thermal and chemical stability, and incompatibility with fossil fuels. Therefore, it will be difficult to directly replace fossil fuel oil with bio-oil and apply ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/00C10L1/00
Inventor 陆强田慧云杨勇平
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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