Microemulsified fuel oil and preparation thereof

A technology of micro-emulsion and fuel oil, which is applied in the direction of water treatment and refining, etc. It can solve the problems of short shelf life, poor stability, and poor reversibility of emulsified oil, and achieve the effects of reduced exhaust emissions, good lubricating performance, and clear appearance

Inactive Publication Date: 2009-04-22
TIANJIN ACADEMY OF ENVIRONMENTAL SCI
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AI Technical Summary

Problems solved by technology

However, due to the high price of emulsifiers, poor reversibility of emulsified oil, difficulty in starting the engine, high requirements for the use of emulsification equipment, and the need for transformation of gas turbines, the promotion and application of emulsified diesel in China is limited.
But the main reason is that there are the following problems in the emulsification technology: 1) After the diesel is emulsified, the milky white color changes the appearance of the oil; 2) The stability is poor and the shelf life is short; 3) It cannot be used in common with diesel, and it is difficult to turn it into diesel; 4 ) emulsification cost is high
After investigation, there is no public publication of the same technical content as the present invention both at home and abroad

Method used

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  • Microemulsified fuel oil and preparation thereof
  • Microemulsified fuel oil and preparation thereof

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Experimental program
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Effect test

Embodiment 1

[0029] Preparation of complex fatty acid amide emulsifier:

[0030] Treatment method of waste oil: acidify waste oil with 5%-10% hydrochloric acid for 2 times, wash with water once, separate and remove water, and dry for later use.

[0031]Put 1 mol of waste oil and 0.5 mol of diethanolamine into a four-neck flask equipped with a stirrer, a water separator, a reflux condenser and a thermometer, add 40 ml of 20% sodium hydroxide, and carry out the aminolysis reaction under alkaline conditions. The time is 2 hours, the reaction temperature is 100°C, and the amide ester is synthesized. In the second step, 0.4mol diethanolamine is added to carry out the aminolysis reaction. The time is 1 hour, and the reaction temperature is 100°C, so that the amine mono(bis)ester in the product is converted into an amide In the third step, add an excess of 0.2mol alkanolamine, the reaction time is 1h, and the reaction temperature is 100°C, and a three-step aminolysis reaction is carried out to co...

Embodiment 2

[0035] Preparation of Microemulsion Fuel Oil

[0036] Composition of microemulsion fuel oil:

[0037] model Complex fatty acid amide emulsifier National standard diesel water

[0038] A 12 76 12 B 10 80 10 C 8 84 8

[0039] According to the above ratio, mix national standard diesel oil, emulsifier and water, heat to 30°C, refine the material to 0.1um-2um by high-shear homogenizer or high-pressure homogeneous emulsifier, and prepare micro-emulsified vehicle fuel (its See Table 2 for quality standards).

Embodiment 3

[0041] Waste oil treatment method: acidify the oil foot with 10% hydrochloric acid once, wash it twice with water, separate and remove the water, and dry it for later use.

[0042] Put 1 mol of oil bottoms and 0.6 mol of diethanolamine into a four-necked flask equipped with a stirrer, a water separator, a reflux condenser and a thermometer, add 20 ml of 30% sodium hydroxide, and carry out the aminolysis reaction under alkaline conditions. The time is 1h, the reaction temperature is 100°C; in the second step, 0.4mol diethanolamine is added to carry out the amino decomposition reaction, the time is 1h, and the reaction temperature is 100°C, so that the amine mono(bis)ester in the product is converted into an amide; the third step Then add an excess of 20% mole of alkanolamine, the reaction time is 1 h, and the reaction temperature is 100°C. The amide mono(bis)ester in the product is converted into amide, the heating is stopped, the reaction product is cooled, and the filtered cr...

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Abstract

The invention relates to micro-emulsification fuel oil and a method for preparing the micro-emulsification fuel oil by using garbage oil. The method comprises the following steps: using waste oil or oil foot as a main raw material, synthesizing a high-quality composite emulsifying agent by the raw material through three steps of aminolysis reaction, and thinning the raw material to 0.1 to 2 mu m by a high shear homogenizer to prepare the micro-emulsification fuel oil of A type, B type and C type respectively. The micro-emulsification fuel oil comprises the components in weight percentage: 76 to 84 percent of diesel oil, 8 to 12 percent of the composite emulsifying agent, and 8 to 12 percent of water. Except water content, other indexes of product quality of the micro-emulsification fuel oil accord with the diesel oil of international standard. The fuel oil has favorable ignition performance and no side effect for an engine, and can be stored for more than half a year. The method is suitable for oil for power of equipment such as various vehicles, ships, boilers, and the like, has cut-down function for tail gas discharge and effect reaching 30 to 50 percent, and has the characteristics of high heating value and low discharge. The micro-emulsification fuel oil is used for reducing fuel cost greatly at the same time of saving energy; and the developed micro-emulsification technique can meet the requirement of large-scale industrialized production.

Description

technical field [0001] The invention relates to the technical field of harmless treatment of municipal waste, and more specifically relates to a method for preparing micro-emulsion fuel oil by using waste oil to produce a compound fatty acid amide emulsifier. Background technique [0002] With the continuous development of the national economy, people's living standards have been greatly improved, and private cars have gradually entered thousands of households, but the accompanying air pollution has seriously affected people's health. At present, about 70% of my country's bus exhaust emissions exceed the standard, which has become the main source of air pollution; 60% of CO, 50% of NO, and 30% of HC pollution in the air of large cities are caused by vehicle exhaust emissions. The measured results show that about 15% of the fuel is emitted into the atmosphere in the form of CO and HC. In addition, with the increasingly prominent contradiction between environment and developm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G31/08
Inventor 王连生周福生马淑华李汉威
Owner TIANJIN ACADEMY OF ENVIRONMENTAL SCI
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