A method and device for producing oil-coal slurry

Abstract

The invention discloses a coal-oil slurry production and device. The device comprises a shearing mineralizing machine for mixing coal water slurry, oil and air to obtain a mixed raw material, an oil-water-phase separator for performing water phase and oil phase separating on the mixed raw material to obtain an oil phase material, and an oil phase deposition tank for depositing the oil phase material to obtain the coal-oil slurry, wherein the shearing mineralizing machine, the oil-water-phase separator and the oil phase deposition tank sequentially communicate through pipelines. According to the method and the device, the surface hydrophilicity difference between carbon particles and ash particles in the coal-oil slurry is utilized; the carbon particles are oleophylic and hydrophobic, and the ash particles are hydrophilic and oleophobic; the coal-oil slurry, the oil and the air are fed into the shearing mineralizing machine and are stirred and mixed, so that the water phase on the surfaces of the carbo particles can be automatically replaced by oil, and as a result, the coal-oil slurry is produced. With the adoption of the method and the device, the process of concentrating and dehydrating the coal-oil slurry can be avoided, and thus a large number of energy for preparing dry pulverized coal can be saved.

Description

technical field [0001] The invention relates to the field of oil-coal slurry, in particular to a method and device for producing oil-coal slurry. Background technique [0002] The existing common oil-coal slurry preparation method is to add coal powder and solvent oil into the mixer respectively, and then mix them by mechanical stirring or bubbling stirring. During the mixing process, coal powder with a fine particle size, especially coal powder particles with a particle size of less than 150 μm, is prone to particle agglomeration during the process of mixing with solvent oil, resulting in the liquid oil phase being only on the surface of the coal particle powder. Dissolved, but cannot penetrate into the interior of the particles, and thus fail to achieve the purpose of sufficient solid-liquid mixing. [0003] At the same time, the water content of the coal particles prepared by the existing flotation method is about 70wt.%. When the traditional method uses this coal-water ...

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a method and device for producing oil-coal slurry, aiming at solving the problem that the existing oil-coal slurry preparation method consumes a lot of energy and small-sized carbonaceous particles are difficult to completely disperse in the oil solvent. And the problem of forming a uniform oil-coal slurry

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