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Method for synthesizing aviation kerosene cycloparaffin and aroma components by utilization of wood chips

A technology for aviation kerosene and naphthenic hydrocarbons, which is used in the preparation of liquid hydrocarbon mixtures, the petroleum industry, and the treatment of hydrocarbon oils. , the effect of low vapor pressure

Active Publication Date: 2016-06-01
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production of C9-C14 naphthenes and aromatics from lignocellulosic biomass can be used as the aromatic components of aviation kerosene. However, there have been no reports on the controllable conversion technology of biomass targeting the directional synthesis of C9-C14 naphthenes and aromatics.

Method used

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  • Method for synthesizing aviation kerosene cycloparaffin and aroma components by utilization of wood chips
  • Method for synthesizing aviation kerosene cycloparaffin and aroma components by utilization of wood chips
  • Method for synthesizing aviation kerosene cycloparaffin and aroma components by utilization of wood chips

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The effect of temperature on catalytic cracking and deoxygenation of wood chips into low-carbon aromatics and low-carbon olefins:

[0028] The purpose of this example is to illustrate the effect of converting lignocellulosic biomass (wood chips) into low-carbon aromatics and low-carbon olefins by catalytic cracking and deoxygenation of wood chips and the effect of temperature, but does not limit this method.

[0029] In this example, the sawdust raw material was purchased from Hefei Lanxu Biotechnology Co., Ltd. The main elements in the sawdust raw material are carbon, hydrogen and oxygen (the element ratio is C:H:O=46.20:6.02:47.30). The catalyst used for wood chip depolymerization and deoxidation is 3.1wt% NiO / 14.5wt% MgO / 82.4wt% Al-MCM-41 catalyst. The preparation steps of the catalyst are as follows: weigh 2.4g of commercially available nickel nitrate hexahydrate and 18.6g of magnesium nitrate hexahydrate, add 100mL of deionized water, and configure a nitrate mixed...

Embodiment 2

[0037] Catalyst stability in catalytic cracking and deoxygenation of wood chips to light aromatics and light olefins:

[0038] This example is intended to illustrate the effect of converting wood chips into low-carbon aromatics and low-carbon olefins and the stability of the catalyst by catalytic cracking and deoxygenation of wood chips, but does not limit this method.

[0039] In the process of this embodiment, the wood chip raw material used and the wood chip catalytic cracking and deoxygenation reactor used are the same as those used in Example 1. The catalyst used for wood chip catalytic cracking and deoxygenation is 7.6wt% NiO / 5.2wt% MgO / 87.2wt% Al-MCM-41 catalyst. The preparation steps of the catalyst are as follows: weigh 5.88g of commercially available nickel nitrate hexahydrate and 6.67g of magnesium nitrate hexahydrate, add 100mL of deionized water, and configure a nitrate mixed solution; then add 17.44g of commercially available Al-MCM-41 Molecular sieve powder is ...

Embodiment 3

[0045] Influence of temperature during the directional conversion of low-carbon aromatics to kerosene range C9-C14 aromatics:

[0046] This example aims to illustrate the effect of directional conversion of low-carbon aromatics obtained by catalytic cracking and deoxygenation of sawdust into aromatics in the C9-C14 kerosene range by using the electrophilic substitution reaction of aromatics and the effect of temperature, but the method is not limited thereby.

[0047] In this example, the raw material of low-carbon aromatics is the mixture of low-carbon aromatics produced by catalytic depolymerization and deoxygenation of sawdust at 450° C. in Example 1. In order to maximize the use of biomass raw materials, the C2-C4 low-carbon olefin mixed tail gas obtained by catalytic cracking of wood chips under the condition of 450 ° C in Example 1 is used as the alkylating agent in the process of electrophilic substitution reaction of aromatics, and the tail gas of catalytic cracking of ...

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Abstract

The invention provides a method for synthesizing aviation kerosene cycloparaffin and aroma components by the utilization of wood chips. The method comprises the following steps: Step 1, wood chips undergo catalytic cracking to obtain low-carbon aromatics: a catalyst is nickel / magnesium-containing modified NiO / MgO / Al-MCM-41, and low-carbon aromatics based on C6-C8 is formed after catalytic reaction of wood chips; Step 2, low-carbon aromatics is directionally converted to aromatics within the range of kerosene: an alkylating agent is low carbon olefins obtained after synchronous catalytic cracking of wood chips, a catalyst is a highly acidic xPF6-[bmim]-yAlCl3 (x,y=0.5-2) ionic liquid, and aromatics based on C9-C14 is formed after electrophilic substitution reaction of low-carbon aromatics; and Step 3, C9-C14 aromatics is directionally converted to cycloparaffin: a catalyst is palladium modified Pd / Al-MCM-22, and cycloparaffin based on C9-C14 is formed. Basic technical requirements of common aircraft fuel can be met. The method can be used for synthesizing aroma and cycloparaffin components in biological aviation kerosene.

Description

technical field [0001] The invention belongs to the technical field of aviation fuel, and in particular relates to a method for synthesizing aromatic and naphthenic components of aviation kerosene by using sawdust. Background technique [0002] Energy and the environment are the most important issues involved in the sustainable development of human society. Due to population increase and social development, people's demand for resources, especially the consumption of fossil fuels, is growing rapidly. Since entering the 21st century, both our country and the world are facing the dual pressure of economic growth and environmental protection. Changing the production structure and consumption patterns of energy and chemical industries and establishing a sustainable energy and chemical network are important strategies for promoting economic development and improving the ecological environment. Significantly, biomass energy chemical industry will definitely become the most import...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00C10G69/02
Inventor 李全新毕培燕张雅静汪继聪姜沛汶吴小平薛鹤刘俊旭
Owner UNIV OF SCI & TECH OF CHINA
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