Microemulsified biodiesel and preparation thereof

Abstract

The invention relates to micro-emulsified biological diesel oil and a method for preparing the same. The micro-emulsified biological diesel oil is characterized by comprising the following substances in percentage by weight: wherein 50 to 60 percent of mineral diesel oil, 25 to 30 percent of animal grease, 10 to 15 percent of methanol, 0.5 to 3.0 percent of naphthenic acid, 0.5 to 3.0 percent of OP emulsifier, 0.5 to 2.0 percent of sodium dodecyl sulfonate and 0.5 to 2.0 percent of trolamine. The method for preparing the micro-emulsified biological diesel oil comprises the following steps: the animal grease, the methanol, the OP emulsifier, the sodium dodecyl sulfonate and the trolamine are evenly mixed according to weight percentage; the mixed solution is slowly poured into the mineral diesel oil under the stirring condition; simultaneously, according to the requirement of the weight percentage, the naphthenic acid is added and fully stirred and mixed, thereby preparing the micro-emulsified biological diesel oil. The micro-emulsified biological diesel oil has the advantages of high combustion efficiency, small environmental pollution, simple preparation process, convenient use and good stability and can be used as commercial oil for mass popularization and use.

Description

technical field [0001] The invention relates to the technical field of biodiesel processing, in particular to a microemulsion biodiesel and a preparation method thereof. Background technique [0002] The early methods used to prepare biodiesel mostly used direct mixing or dilution methods. Subsequently, in order to solve the high viscosity problem of animal and vegetable oils, microemulsion research was carried out. At present, transesterification is mainly used. However, the production equipment of the transesterification method is complicated, the investment is large, the energy consumption is high, and the direct economic benefit is not obvious, which affects the industrialization of biodiesel. Therefore, microemulsion biodiesel is one of the development directions. Microemulsified biodiesel, including other microemulsified diesel oils, has been available for decades, but has not been popularized and applied so far. The reason is that the microemulsified biodiesel meth...

AI Technical Summary

Problems solved by technology

Microemulsified biodiesel, including other microemulsified diesel oils, has been available for decades, but has not been popularized and applied so far. The reason is that the microemulsified biodiesel method in the prior art has the following deficiencies: 1. Poor stability and short shelf life

At present, most of the micro-emulsion diesel oil developed by various countries in the world is a white emulsion, the diameter of the water phase particles is between 0.01 and 0.1 mm, and the storage period is generally only 2 to 10 days, which cannot be used as commercial oil turnover, which brings limitations to popularization and use.

2. The cost of emulsifier is high

The emulsifiers of this type of emulsified biodiesel mainly use Span series, Tween series and oleic acid series substances. According to the formation mechanism of microemulsion, to obtain emulsified biodiesel, a large amount of emulsifiers must be used. Due to the high cost of emulsifiers, although emulsified biodiesel Diesel oil has a good fuel-saving effect, but fuel-saving does not save money, the direct economic benefits obtained by users are not obvious, and the industrial application value is not great

3. Other quality problems of emulsified biodiesel affect the use, such as high viscosity and blocked nozzles, poor fluidity at low temperature affect use, etc.