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

A bio-oil, non-polar technology, applied in the direction of chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of mixing fuel oil, low calorific value of bio-oil, etc., to achieve calorific value improvement , calorific value increase, the effect is obvious

Inactive Publication Date: 2014-02-12
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
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Embodiment Construction

[0029] Now take the primary bio-oil prepared by rapid pyrolysis and liquefaction as the raw material of rice husk as an example, a non-limiting example is 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) to the solution, after stirring and dispersing, heat up to 72°C, add 6g solid NaOH to it, stir and react for 20min, 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 use.

[0031] Take 100g of primary bio-oil and 2g of NiCoMo / HZSM-5 catalyst into the pressure-resistant reaction kettle and seal it with 2MPa H 2 The air in the upper layer of the reaction kettle was replaced, and the temperature of the system was raised to 400° C. After 40 minutes of ...

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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, in particular to a method for 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] With the increasingly prominent problems of greenhouse gas emissions, air pollution, and non-renewability brought about by the application of fossil energy, 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 technologies such as rapid pyrolysis, has become an important fossil fuel due to its advantages of zero net carbon emission, clean and pollution-free, and renewable. alternatives. However, there is a key problem that limits the large-scale application...

Claims

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Application Information

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Patent Type & Authority Applications(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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