Method for preparing high-performance fuel oil by adopting mesoporous alkaline carbon materials to carry out catalytic cracking on grease

A catalytic cracking and mesoporous carbon technology, applied in chemical instruments and methods, preparation of liquid hydrocarbon mixtures, physical/chemical process catalysts, etc., can solve problems such as instability, high yield of cracked oil, etc., to achieve wide adaptability and load The effect of simple method

Active Publication Date: 2013-01-23
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Technical problem to be solved: In order to solve the problem that existing catalysts such as mesoporous silicon material pore structures are destabilized under alkaline conditions, the present invention provides a me

Method used

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  • Method for preparing high-performance fuel oil by adopting mesoporous alkaline carbon materials to carry out catalytic cracking on grease
  • Method for preparing high-performance fuel oil by adopting mesoporous alkaline carbon materials to carry out catalytic cracking on grease
  • Method for preparing high-performance fuel oil by adopting mesoporous alkaline carbon materials to carry out catalytic cracking on grease

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Dissolve 1 g of mesoporous molecular sieve SBA-15 (hard template agent) in 11 mL of distilled water, add 1.25 g of sucrose and 7.2 mL of 0.2 mol / L sulfuric acid, and sonicate for 1 h; Evaporate to constant weight, and then preliminarily carbonize at 160 °C for 6 h; grind the preliminarily carbonized product through an 80-mesh sieve, then dissolve it in 11 mL of water, add 0.75 g of sucrose and 4 mL of 0.2 mol / L sulfuric acid again; repeat The process of water evaporation at 90 ℃ and preliminary carbonization at 160 ℃; 2 Under the protection of the tube furnace, put it in a tube furnace at 900 ℃ for 5 h; dissolve the obtained product in HF solution with a volume fraction of 5% and stir for 24 h to remove the hard template agent; centrifuge, wash with distilled water until neutral, and put it in an oven for 60 °C drying to obtain mesoporous carbon supports. Dissolve 0.05 g of potassium carbonate in 10 mL of distilled water; add 1 g of mesoporous carbon support and sonica...

Embodiment 2

[0045] Dissolve 1 g of mesoporous molecular sieve SBA-15 (hard template agent) in 11 mL of distilled water, add 1.25 g of sucrose and 7.2 mL of 0.2 mol / L sulfuric acid, and sonicate for 1 h; Evaporate to constant weight, and then preliminarily carbonize at 160 °C for 6 h; grind the preliminarily carbonized product through an 80-mesh sieve, then dissolve it in 11 mL of water, add 0.75 g of sucrose and 4 mL of 0.2 mol / L sulfuric acid again; repeat The process of water evaporation at 90 ℃ and preliminary carbonization at 160 ℃; 2 Under the protection of the tube furnace, put it in a tube furnace at 900 ℃ for 5 h; dissolve the obtained product in HF solution with a volume fraction of 5% and stir for 24 h to remove the hard template agent; centrifuge, wash with distilled water until neutral, and put it in an oven for 60 °C drying to obtain mesoporous carbon supports. Dissolve 0.05 g of potassium carbonate in 10 mL of distilled water; add 1 g of mesoporous carbon support and sonica...

Embodiment 3

[0048] Dissolve 1 g of mesoporous molecular sieve SBA-15 (hard template agent) in 11 mL of distilled water, add 1.25 g of sucrose and 7.2 mL of 0.2 mol / L sulfuric acid, and sonicate for 1 h; Evaporate to constant weight, and then preliminarily carbonize at 160 °C for 6 h; grind the preliminarily carbonized product through an 80-mesh sieve, then dissolve it in 11 mL of water, add 0.75 g of sucrose and 4 mL of 0.2 mol / L sulfuric acid again; repeat The process of water evaporation at 90 ℃ and preliminary carbonization at 160 ℃; 2 Under the protection of the tube furnace, put it in a tube furnace at 900 ℃ for 5 h; dissolve the obtained product in HF solution with a volume fraction of 5% and stir for 24 h to remove the hard template agent; centrifuge, wash with distilled water until neutral, and put it in an oven for 60 °C drying to obtain mesoporous carbon supports. Dissolve 0.05 g of potassium carbonate in 10 mL of distilled water; add 1 g of mesoporous carbon support and sonica...

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Abstract

The invention relates to a method for preparing high-performance fuel oil by adopting mesoporous alkaline carbon materials to carry out catalytic cracking on grease. The method comprises the following steps of: synthesizing a mesoporous carbon carrier by virtue of a hard template method, and loading hydroxide of alkali or carbonate accounting for 1%-15% of the mass of the mesoporous carbon carrier on the surface of the mesoporous carbon carrier to obtain an alkaline mesoporous carbon catalyst; and weighing triglyceride and the catalyst according to a mass ratio of m triglyceride to m alkaline mesoporous carbon catalyst equal to 100: (1-10), putting the triglyceride and the catalyst into a reaction kettle, heating the reaction kettle to 350-500 DEG C, and collecting generated fraction to obtain a dark brown liquid, namely the product. The carbon material is an inert material and can well keep an original mesoporous structure after being loaded. As the alkaline catalyst and the mesoporous material carrier are matched with each other, not only can low-acid-value catalytic cracking liquid fuel oil with less content of carboxyl be obtained, but also the molecular weight distribution of split products can be controlled so as to obtain diesel fractions (C14-C22) in a directional way.

Description

[0001] technical field [0002] The invention belongs to the technical field of biomass energy conversion, and mainly relates to the research of a new triglyceride catalytic cracking catalyst. [0003] Background technique [0004] The primary energy sources dominated by petroleum and coal are increasingly depleted, while biomass energy uses renewable or recycled organic substances, including crops, trees and other plants and their residues, as raw materials for the production of bio-based products and biofuels industry. Among them, the catalytic cracking of triglyceride is an effective method for preparing liquid fuel. In the previous patent (200910029495.X), we described the oil cracking reaction under the action of basic catalysis, but because only basic compounds are used as catalysts, the molecular weight distribution of cracked products is wide, and some raw materials are randomly pyrolyzed The reaction further generates low-carbon hydrocarbons, which reduces the yi...

Claims

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Application Information

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IPC IPC(8): C10G3/00B01J27/232B01J23/04
CPCY02P30/20
Inventor 蒋剑春徐俊明李静夏海虹周永红
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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