Method for preparing emulsified fuel oil

Abstract

The invention relates to a method for preparing emulsified fuel oil, which comprises the following steps: 1) adding methanol or ethanol into oleic acid or fatty acid, and stirring for forming an acid phase; 2) adding the methanol or the ethanol into ammonia, and stirring for forming a base phase; 3) adding the base phase into the acid phase while stirring for preparing an emulsifier; and 4) adding clean water into petrochemical finished oil, firstly stirring till milk white, then adding the emulsifier, stirring till that liquid is transparent and clear, standing and then filtering, thereby preparing the emulsified fuel oil. The method can also add a diluent, a modifier, a protective agent and the like according to needs. The emulsified fuel oil has the advantages of simple production technology, extensive resources of raw materials, cheap price, high product stability and good intersolubility with the petrochemical finished oil.

Description

technical field [0001] The invention relates to a water-in-oil type (W / O type) emulsified fuel oil, in particular to a method for preparing diesel oil microemulsion, gasoline microemulsion or kerosene microemulsion by using diesel oil, gasoline or kerosene. Background technique [0002] With the rapid development of industrial and agricultural production and the automobile and transportation industries, people's demand for refined oil is increasing day by day. However, petrochemical refined oil is a non-renewable energy source, and its incomplete combustion causes environmental pollution. Therefore, fuel-saving and anti-pollution technologies such as emulsified diesel oil, emulsified gasoline, emulsified kerosene and their additives have emerged as the times require. [0003] The diesel emulsifiers in the United States, Japan, Germany and other countries have already been sold as commodities, and the third or fourth generation products have been developed; my country has als...

AI Technical Summary

Problems solved by technology

[0003] The diesel emulsifiers in the United States, Japan, Germany and other countries have already been sold as commodities, and the third or fourth generation products have been developed; my country has also made great progress in emulsifiers in recent years, but most of them are more or less There are some problems that affect the promotion and application of emulsified diesel oil, emulsified gasoline, and emulsified kerosene

[0004] For example, the cost of emulsifiers is high. If ethanolamine or cyclohexylamine is used for the alkali phase, the material price is 15,000-25,000 yuan / ton. Although the transparency of the emulsion is relatively high, the cost is comparable to the price of petrochemical refined oil, which has no practical significance; The production process is difficult to control. For example, although some alkaline phases also use ammonia water, which reduces the cost of emulsifiers, the emulsification process is difficult to control due to the strong alkalinity of ammonia water, which affects product quality and causes poor stability, and oil-water separation is prone to occur; production process Complexity and large investment in equipment. If some special production equipment such as light, magnetism or ultrasonic is required to achieve product transparency, it also increases production costs and investment risks; petrochemical refined oil has complex components, large component changes and polarity Strong, there is a certain difficulty in solving the miscibility between the emulsion and it; etc.