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A kind of preparation method of emulsified heavy oil

A heavy oil and emulsifier technology, applied in the petroleum industry, processing hydrocarbon oil, refining by dialysis, etc., can solve the problems of complex process, difficult to meet the water-in-oil emulsion, etc., to improve the jet flow, reduce the surface energy and Oil-water interfacial tension and emulsification effect are obvious

Active Publication Date: 2018-06-12
南京工大釜鼎能源技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method requires secondary emulsification, so the process is relatively complicated. At the same time, due to the strong surface energy of the hydrophilic ceramic membrane used, it is difficult to meet the specific needs of water-in-oil emulsion preparation.

Method used

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  • A kind of preparation method of emulsified heavy oil
  • A kind of preparation method of emulsified heavy oil
  • A kind of preparation method of emulsified heavy oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Single-channel tubular Al with a nominal pore size of 200nm 2 o 3 The ceramic membrane is a jet membrane emulsification medium, and its pore size distribution is as follows: figure 2 As shown, the pore size distribution is relatively concentrated, the most probable pore size is 180nm, and the maximum pore size is 1.15μm. The ceramic membrane was first soaked in the dispersed phase for 12h. image 3 The change relationship between the viscosity of heavy oil and temperature is the relationship between the viscosity of heavy oil and the viscosity of heavy oil decreases with the increase of temperature. In order to reduce the viscosity of heavy oil, the temperature of continuous phase is controlled at 90 °C. The circulating oil pump is used to provide the shear force on the membrane surface, and the flow velocity on the membrane surface is controlled to be 1.0m / s. The emulsifier in the dispersed phase is a mixture of Tween-20 and sodium lauryl sulfate with a mass ratio ...

Embodiment 2

[0029] Single-channel tubular Al with a nominal pore size of 200nm 2 o 3The ceramic membrane is a jet membrane emulsification medium, and it is first soaked in the dispersed phase for 12 hours. In order to reduce the viscosity of heavy oil, the continuous phase temperature was kept at 90 °C. The circulating oil pump is used to provide the shear force on the membrane surface, and the flow velocity on the membrane surface is controlled to be 1.0m / s. The emulsifier is a mixture of Tween-20 and sodium lauryl sulfate at a mass ratio of 1:1, the volume content of the emulsifier in the dispersed phase is 200ppm, and the continuous phase is heavy oil. Under the pressure of 0.12MPa, the flux of the dispersed phase through the membrane pores is 42.46L m -2 h -1 . Control the water content (volume) in the emulsified heavy oil to be 8%. The particle size range of the prepared emulsion is 1-15 μm.

Embodiment 3

[0033] Single-channel tubular ZrO with a nominal pore size of 100nm 2 The ceramic membrane is a jet membrane emulsification medium, and it is first soaked in the dispersed phase for 12 hours. In order to reduce the viscosity of heavy oil, the continuous phase temperature was kept at 90 °C. The circulating oil pump is used to provide the shear force on the membrane surface, and the flow velocity on the membrane surface is controlled to be 1.0m / s. The emulsifier is a mixture of Tween-20 and Span-60 with a mass ratio of 1:1, the volume content of the emulsifier in the dispersed phase is 400ppm, and the continuous phase is heavy oil. Under the pressure of 0.15MPa, the flux of the dispersed phase through the membrane pores is 88.25L m -2 h -1 . Control the water content (volume) in the emulsified heavy oil to be 8%. The particle size range of the prepared emulsion is 1-10 μm.

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Abstract

The invention provides a preparation method of emulsified heavy oil. The method is characterized by comprising the steps of taking a ceramic membrane as an emulsification medium, wetting the ceramic membrane in a disperse phase to reduce the surface energy of the ceramic membrane, dissolving an emulsifier into water as the disperse phase, wherein the heavy oil is a continuous phase; and pressing the disperse phase through the ceramic membrane to form a micro jet under a transmembrane pressure difference and forming water-in-oil type emulsified heavy oil under the action of continuous phase shear force, wherein the particle sizes of emulsion droplets in the prepared emulsified heavy oil are 1-20 microns. The method has the advantages of being simple in equipment, convenient to operate, high in membrane flux, narrow in emulsion size distribution, good in dispersity and the like, and can be used for raw material pretreatment in the catalytic cracking process of the heavy oil.

Description

technical field [0001] The invention relates to a method for preparing emulsified heavy oil, in particular to a method for emulsifying heavy oil with a jet film, which is mainly used in the pretreatment of the catalytic cracking process of heavy oil and belongs to the field of oil processing. Background technique [0002] With the decrease of conventional oil resources, the heavy and poor quality of crude oil is increasing, and it is more and more urgent to refine heavy oil into gasoline and diesel. However, since the residual oil is in a gas-liquid mixed state during the heavy oil catalytic cracking reaction, the atomization and evaporation processes before it contacts with the catalyst particles play a very important role in the whole reaction. [0003] The emulsified raw material is used as the feedstock for the catalytic cracking reaction of heavy oil. The small water droplets in the emulsified heavy oil will be heated and vaporized, and the oil droplets will explode ins...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G31/11
CPCC10G31/11C10G2300/1037
Inventor 景文珩夏成胜孙雨晴邢卫红
Owner 南京工大釜鼎能源技术有限公司
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