Bio-based dimethoxyl alkane diesel oil and preparation method thereof

A bio-based dimethoxyalkane and dimethoxyl technology, which is applied in the preparation of liquid hydrocarbon mixtures, biofuels, and bio-raw materials, can solve problems such as low calorific value and corrosion, and achieve high calorific value and high calorific value , Good lubrication effect

Inactive Publication Date: 2014-04-30
INNER MONGOLIA JINDI BIOMASS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of ether fuels is that the calorific value is low. In order to ensure the level of the engine, the circulating oil supply must be increased. Although it is not corrosive to metals, it has a corrosive effect on ordinary rubber and plastics.

Method used

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  • Bio-based dimethoxyl alkane diesel oil and preparation method thereof
  • Bio-based dimethoxyl alkane diesel oil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Preparation of acid-supported catalyst

[0024] 1mol / L of BF 3 The solution was mixed with phosphotungstic acid at 65°C, BF 3 The molar ratio to phosphotungstic acid is 1:0.1. The mixed solution was loaded on activated carbon, in which the carrier accounted for 90% by mass. Dry at 120°C for 12 hours, and bake at 450°C for 3 hours to prepare boron-phosphotungstic acid supported catalyst.

[0025] (2) Product synthesis

[0026] Add 10g of 2-methyltetrahydrofuran and 0.2g of acid-loaded catalyst into a 1L autoclave, feed dimethyl ether gas, the molar ratio of 2-methyltetrahydrofuran to dimethyl ether is 1:10, adjust the nitrogen to keep the reaction kettle The pressure was kept constant, the pressure control range was 1 MPa, the reaction temperature was 160° C., and the reaction was carried out for 4 hours to obtain 12.2 g of the product. Wherein dimethoxyl-1-methylbutane content accounts for 55wt%, bisdimethoxyl-1-methylbutane content is 19wt%, trimethoxyl-1-meth...

Embodiment 2

[0028] (1) Preparation of acid-supported catalyst

[0029] 1mol / L of BF 3 Mix with or silicotungstic acid at 65°C, BF 3 Or the molar ratio of silicotungstic acid is 1:0.1. The mixed solution was impregnated on silica to make a supported catalyst, the impregnation time was 12, and the carrier accounted for 80% by mass. Drying at 120°C for 12h, and calcining at 450°C for 3h, the boron-silicotungstic acid supported catalyst was prepared.

[0030] (2) Product synthesis

[0031] Add 10g of 2-methyltetrahydrofuran and 0.5g of acid-loaded catalyst into a 1L autoclave, feed dimethyl ether gas, the molar ratio of 2-methyltetrahydrofuran to dimethyl ether is 1:20, adjust the nitrogen to maintain the The pressure was kept constant, the pressure control range was 2 MPa, the reaction temperature was 120° C., and the reaction was carried out for 4 hours to obtain 12.3 g of the product. Wherein dimethoxyl-1-methylbutane content accounts for 58wt%, bisdimethoxyl-1-methylbutane content is ...

Embodiment 3

[0033] (1) Preparation of acid-supported catalyst

[0034] 1mol / L of SnCl 2 Solution of silicotungstic acid mixed at 65°C, SnCl 2 The molar ratio with or silicotungstic acid is 1:0.1. The mixed solution was impregnated onto Al2O3 to make a supported catalyst, the impregnation time was 12, and the mass percentage of the carrier was 80%. Dry at 120°C for 12 hours, and bake at 450°C for 6 hours to prepare the tin-silicotungstic acid supported catalyst.

[0035] (2) Product synthesis

[0036] Add 10g of 2-methyltetrahydrofuran and 0.2g of acid-loaded catalyst into a 1L autoclave, feed dimethyl ether gas, the molar ratio of 2-methyltetrahydrofuran to dimethyl ether is 1:20, adjust the nitrogen to maintain the The pressure was kept constant, the pressure control range was 4 MPa, the reaction temperature was 190° C., and the reaction was carried out for 2 hours to obtain 12.5 g of the product. Wherein dimethoxyl-1-methylbutane content accounts for 54wt%, bisdimethoxyl-1-methylbu...

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Abstract

The invention relates to bio-based dimethoxyl alkane diesel oil and a preparation method thereof. The bio-based dimethoxyl alkane diesel oil is characterized by being a mixture comprising dimethoxyl-1-methyl butane, bis-bidimethyl-1-methyl butane and tri-bidimethyl-1-methyl butane, wherein the mixture is prepared by carrying out reaction on 2-methyltetrahydrofuran, produced from a wood fiber biomass, and dimethyl ether on an acid supported catalyst through a condensing process. The diesel oil has the advantages that ether fuel is produced by taking 2-methyltetrahydrofuran produced from the wood fiber biomass as the raw material, the raw material is low in price and easily available, and the product has low condensation point, high heat value, good lubrication and low corrosivity, so that the deficiency of existing ether diesel oil is overcome. Meanwhile, the diesel oil provided by the invention is superior to fatty acid methyl ester biological diesel oil in the aspects of low temperature, oxidation stability and hydrolyzing stability. The diesel oil provided by the invention and petroleum diesel oil can be dissolved in any ratio.

Description

technical field [0001] The invention belongs to the field of renewable energy utilization, and in particular relates to a bio-based dimethoxyalkane diesel and a preparation method thereof. Background technique [0002] With the continuous mining of human beings, the depletion of fossil energy is inevitable, and most of the fossil energy will be exhausted in this century. On the other hand, during the use of fossil energy, a large amount of greenhouse gas carbon dioxide will be added, and some polluting smoke will be produced at the same time, thus threatening ecological security. Therefore, the development of alternative energy sources is of great significance for alleviating energy pressure and environmental protection. Oxygenated fuel produced from biomass is a promising clean energy. It can not only improve the combustion efficiency of diesel and reduce the emission of soot from diesel engines, but also the oxygenated fuel produced from biomass is a renewable energy sour...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/02C10G3/00
CPCY02E50/10Y02P30/20
Inventor 颉二旺张维
Owner INNER MONGOLIA JINDI BIOMASS
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