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Preparation method of high-calorific-value nonpolar bio-oil/gasoline homogeneous fuel oil

A bio-oil, non-polar technology, used in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of mixing as fuel oil, low calorific value of bio-oil, etc., and achieve improved calorific value. , The effect of increasing the calorific value and the high calorific value of the product

Inactive Publication Date: 2015-07-01
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at providing a non-polar bio-oil / gasoline homogeneous fuel for gasoline engines, aiming at the defects that the current bio-oil has a low calorific value and cannot be directly mixed with gasoline as a fuel.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The primary bio-oil prepared by rapid pyrolysis and liquefaction with rice husk as raw material is now taken as an example, and the non-limiting examples are described as follows. The calorific value of the primary bio-oil before upgrading is 23.6MJ / kg.

[0030] 1. The configuration contains Ni 2+ (0.1mol / L), Co 2+ (0.1mol / L), Mo 3+ (0.1mol / L) nitrate solution 100g, then add 10g HZSM-5 (Si / Al=28) into the solution, stir and disperse, raise the temperature to 72°C, add 6g solid NaOH to it, stir for 20min, and The solution was filtered, and the obtained precipitate was dried at 105° C., and then sent to a muffle furnace for calcination at 800° C. for 2 hours to obtain a NiCoMo / HZSM-5 catalyst for future use.

[0031] Take 100g of primary bio-oil and 2g of NiCoMo / HZSM-5 catalyst into a pressure-resistant reactor and seal it with 2MPa H 2 Replace the air in the upper layer of the reaction kettle, raise the temperature of the system to 400°C, and after 40 minutes of react...

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Abstract

The invention discloses a preparation method of high-calorific-value nonpolar bio-oil / gasoline homogeneous fuel oil. The method aims at increasing a calorific value of bio-oil. The method comprises the steps that primary bio-oil is subjected to catalytic cracking and deoxidized by an NiCoMo / HZSM-5 catalyst; the deoxidized bio-oil is dehydrated and decolorized by CaCl2 and activated carbon; polar components of the bio-oil are separated by a silica gel column chromatography; nonpolar bio-oil is obtained; finally the nonpolar bio-oil can be mixed with gasoline in any proportion by mechanical stirring, without adding any emulsifier. The method solves the problem of lower calorific value caused by oxygen and water containing in the primary bio-oil, overcomes the defects of great primary bio-oil polarity and gasoline insolubility, and is high in primary bio-oil utilization ratio; the prepared fuel oil is environment-friendly and high in calorific value; the calorific value can reach 46-55MJ / kg. A good solution is provided for high-efficiency utilization of the bio-oil in a gasoline engine.

Description

1. Technical field [0001] The invention relates to a method for increasing the calorific value of bio-oil, specifically a method of mixing primary bio-oil with gasoline after catalytic cracking deoxidation, dehydration and decolorization, and depolarization components, so as to overcome the disadvantage of low calorific value of bio-oil . 2. Background technology [0002] As the greenhouse gas emissions, air pollution, and non-renewable problems brought about by the application of fossil energy have become increasingly prominent, researchers have gradually focused their attention on biomass energy. In recent years, biomass liquid fuel-bio-oil, which is prepared by liquefying woody biomass raw materials such as rice husks by rapid pyrolysis and other technologies, has become an important source of fossil fuels due to its advantages of zero net carbon emissions, clean and pollution-free, and renewable. substitute. However, the primary bio-oils currently prepared generally ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G53/08B01J29/48
Inventor 徐玉福胡献国刘天霞胡恩柱张斌
Owner HEFEI UNIV OF TECH
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