Method for emulsifying tri-component emulsion containing diesel, methanol and water

Abstract

The invention discloses a method for emulsifying tri-component emulsion containing diesel, methanol and water, comprising the following steps: introducing the diesel to be emulsified from the entrance section of a Venturi tube to the Venturi tube, and leading the diesel to flow through the contracted section of the Venturi tube to arrive a throat part and then flowing to an expansion section, wherein the pressure of the diesel before entering the Venturi tube to is larger than 0.48MPa; then leading methanol solution to flow into the Venturi tube from the throat part of the Venturi tube and mixing with the diesel flowing through the part, wherein the methanol water solution is formed by mixing the mixture of methanol and water with the ratio of 1:1-1:2 with emulsifier the total mass content of which is controlled at between 1% and 3%, the pressure of the methanol water solution before entering the Venturi tube to is larger than 0.18MPa; mixing the diesel and the methanol water solutionwith the mass flow ratio of 9:1-1:1 to form the emulsion; and finally leading the emulsion to flow out through the expansion section. In the invention, the methanol water solution can disperse in diesel rapidly and evenly in short time to avoid the phenomenon of uneven local emulsification, thereby reducing the adverse factors of demulsification and prolonging the retention period of the emulsion.

Description

technical field [0001] The invention relates to an emulsification method, in particular to an emulsification method using a Venturi tube to form a three-component emulsion of diesel oil, methanol and water. Background technique [0002] The problem of liquid emulsification is not only closely related to life, but also widely used in industrial and agricultural production, such as the preparation of pesticides, crude oil extraction, medicine, energy and other fields. As an alternative fuel technology, emulsion has the advantages of energy saving, high combustion efficiency, and obvious reduction of exhaust pollution. [0003] When the methanol / water content is low, it is a water-in-oil-O / W emulsion, the dispersed phase is the "water" phase (water or a mixture of alcohol and water), and the continuous phase is "oil" . Compared with oil / water emulsions, diesel oil, methanol and water emulsions have higher energy densities. In addition to the advantages of low flash point temp...

AI Technical Summary

Problems solved by technology

[0004] At present, the commonly used high-speed stirring and emulsifying equipment has a high mechanical speed, consumes a lot of power, and works intermittently. The amount of emulsification at one time is small. Due to the limitation of the emulsification method, the emulsification work needs to be completed in a special emulsification station, and then the emulsified fuel is provided to the fuel oil equipment.

Moreover, the emulsification device has defects such as complex structure, high maintenance cost and unsatisfactory emulsification effect.

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