CN101837256B - Method for preparing high-quality emulsified heavy oil - Google Patents

Method for preparing high-quality emulsified heavy oil Download PDF

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Publication number
CN101837256B
CN101837256B CN201010182826.6A CN201010182826A CN101837256B CN 101837256 B CN101837256 B CN 101837256B CN 201010182826 A CN201010182826 A CN 201010182826A CN 101837256 B CN101837256 B CN 101837256B
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China
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heavy oil
emulsification
water
emulsifying
quality
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CN101837256A (en
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朱道飞
李博
王�华
王冲
熊振坤
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Kunming University of Science and Technology
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Kunming University of Science and Technology
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Abstract

The invention discloses a method for preparing high-quality emulsified heavy oil, which adopts a heavy oil emulsification technique of the combined emulsification of ultrasonic waves and mechanical stirring, and does not add any emulsifying agent in the emulsification process at all. In the method, the ultrasonic waves and the mechanical stirring synergistically act on a mixture of heavy oil and water to generate a larger shear stress to ensure that the heavy oil and the water are mixed together more sufficiently, and the particle size of a dispersed phase (water) is further thinned to form 'secondary emulsification' of an emulsion so as to form a micro-emulsion which is more stable, cannot be de-mixed easily and has thinner and more uniform emulsified particles. The method has the following main technical parameters that: the average sound energy density is 40 to 60 W/L, the ultrasonic frequency is 25 to 40 kHz, the stir speed is 100 to 300 r/min, the emulsifying temperature is 70 to 80 DEG C, the emulsification time is 30 to 40 minutes, and the water mixing ratio is 1 to 25 percent. The method uses the synergistic action of the ultrasonic waves and the mechanical stirring to improve the emulsification effect and the stability of the emulsified heavy oil, and is a technique for preparing the high-quality emulsified heavy oil.

Description

A kind of method of producing high-quality emulsified heavy oil
Technical field
The present invention relates to ultrasonic wave and the emulsification heavy oil technology is produced in the mechanical agitation synergy, is a kind of new and effective technology of producing emulsification heavy oil, belongs to energy chemical field.
Technical background
Energy shortage and environmental pollution have become the major issue that countries in the world face, and energy-saving and emission-reduction have caused people's common concern, become the task of top priority.China is an energy resource consumption big country, and energy problem is severe more, and environmental pollution is more serious.Energy savings, development clean energy resource have become a long-term essence task of China's Future Development.Fast-developing and conventional oil reserves reduce day by day along with World Economics, and heavy oil has become one of important energy source resource that 21 century receives much concern.The oil in place of whole world heavy oil is about more than 1,000,000,000,000 ton at present.Heavy oil, conventional crude and gas in-place account for 53%, 25% and 22% of petroleum resources gross reserves respectively, and the oil in place of heavy oil is equivalent to conventional gas and oil reserves sum.China's heavy oil resource rich; Heavy oil, pitch resource account for more than 20% of petroleum resources total amount, 19,500,000,000 tons of prognostic resources, and the geological resource amount that wherein can verify is 79.5 hundred million tons; Can adopt stock number is 19.1 hundred million tons, and heavy oil has become the important component part of crude oil in China output.
Emulsification heavy oil is a kind of energy-saving and environmental protection fuel, the exploitation of emulsification heavy oil to alleviate energy scarcity, to improve environmental pollution significant, more and more receives people's attention.The globule during emulsification heavy oil burning in the elaioleucite gasifies rapidly, and volume sharply expands, and " microexplosion " takes place elaioleucite; Form secondary-atomizing, make mist of oil change into more tiny oil particles, can increase oil droplet and combustion air contacted specific surface area; And then can reduce imperfect combustion degree and flue gas loss; Improve the efficiency of combustion of heavy oil, and can reduce the generation and the discharging of nitrogen oxide, thereby can play energy-saving and cost-reducing effect greatly.
The emulsification heavy oil preparation method is more, mainly contains: Mechanical Method, static mixing method, pneumatic process etc.Traditional emulsification method emulsifying effectiveness is bad and energy consumption is higher.Except that also having supercritical ultrasonics technology in addition, though the not scale at present of these class methods is an emulsification method of representing emulsification heavy oil new preparation technology developing direction.
Summary of the invention
The objective of the invention is to the emulsification heavy oil poor stability, can not satisfy problem such as commercial production requirement; Be the stability of raising emulsification heavy oil and the efficiency of combustion of emulsification heavy oil; The method of a kind of ultrasonic wave and mechanical agitation associating emulsification heavy oil has been proposed, to produce high-quality emulsification heavy oil.
A kind of technical scheme of producing the method for emulsification heavy oil of the present invention is: this method adopts ultrasonic wave and the synergistic associating emulsifying technology of mechanical agitation that heavy oil is carried out emulsification.
The mixture of heavy oil and water is positioned in the emulsifying tank, and top adopts mechanical agitator to carry out emulsification, and the supersonic generator of bottom sends ultrasonic wave and carries out emulsification in the inner cavitation that produces of mixture.
The hyperacoustic technical parameter of said employing is: average acoustic energy density 50~60W/L, supersonic frequency 25~40kHz, during mechanical agitation: stir speed (S.S.) 100~300r/min, 70~80 ℃ of emulsifying temperatures, emulsification times 30~40min, water mixing rate are in 25%.
The water mixing rate is 1~25%.
A kind of detection emulsification heavy oil method for quality is characterized in that through microscopic examination, adopts the Sauter mean diameter computing method, tries to achieve the average grain diameter of decentralized photo; Adopt the quiescence in high temperature method, detect the stability of emulsification heavy oil.
Mechanism of the present invention: mechanical agitation emulsification is that a paddle is installed in emulsifying tank, under certain rotating speed and temperature conditions, oil water mixture is stirred it is mixed, and reaches the effect of emulsification.To be ultrasonic wave produce " cavitation " at liquid internal to ultrasonic emulsification, forms thousands of atmospheric instantaneous high pressures, and the high pressure that successively produces is surperficial, inner just as countless little " blasts " continuous impacted object, thereby reaches the purpose of emulsification.
Ultrasonic wave and mechanical agitation associating emulsion process are through ultrasonic emulsification and mechanical agitation emulsification synergy, realize ultrasonic wave and mechanical agitation associating emulsification, need not add any emulsifying agent and just can obtain high-quality emulsification heavy oil.To be positioned in the emulsifying tank by the mixture of certain mass, open ultrasonic wave and mechanical agitator simultaneously, regulate technical parameters such as supersonic frequency, ultrasonic power, stir speed (S.S.), emulsifying temperature, emulsification times, heavy oil will be carried out emulsification than heavy oil for preparing and water.The important technological parameters scope is: average acoustic energy density 40~60W/L; Supersonic frequency 25~40kHz; Stir speed (S.S.) 100~300r/min; 70~80 ℃ of emulsifying temperatures; Emulsification times 30~40min; Water mixing rate 1~25%.Ultrasonic wave and mechanical agitation act synergistically on the mixture of heavy oil and water; Produce bigger shear stress; It is more abundant that heavy oil is mixed with water; The particle diameter refinement more of decentralized photo (water) forms emulsion " second emulsifying ", more stablizes, is difficult for more tiny and uniform microemulsion of layering, emulsified particles to form.
The advantage that the present invention and prior art relatively have:
The method of ultrasonic wave and the mechanical agitation associating emulsification better environment that has been providing of heavy oil emulsive; In the synergy process; Can reduce the interfacial tension of viscosity, reduction heavy oil and the water of heavy oil, heavy oil and water are fully mixed, help the miniaturization of decentralized photo (water).This method is simple to operate, energy consumption is low, and production efficiency is high, and emulsification heavy oil is more stable, better quality.
The specific embodiment
To be positioned in the emulsifying tank by the mixture of certain mass, open ultrasonic wave and mechanical agitator simultaneously, regulate technical parameters such as supersonic frequency, ultrasonic power, stir speed (S.S.), emulsifying temperature, emulsification times, heavy oil will be carried out emulsification than heavy oil for preparing and water.The important technological parameters scope is: average acoustic energy density 40~60W/L; Supersonic frequency 25~40kHz; Stir speed (S.S.) 100~300r/min; 70~80 ℃ of emulsifying temperatures; Emulsification times 30~40min; Water mixing rate 1~25%.Ultrasonic wave and mechanical agitation act synergistically on the mixture of heavy oil and water; Produce bigger shear stress; It is more abundant that heavy oil is mixed with water; The particle diameter refinement more of decentralized photo (water) forms emulsion " second emulsifying ", more stablizes, is difficult for more tiny and uniform microemulsion of layering, emulsified particles to form.Detecting the emulsification heavy oil method for quality is: through microscopic examination, adopt the Sauter mean diameter computing method, try to achieve the average grain diameter of decentralized photo; Adopt the quiescence in high temperature method, detect the stability of emulsification heavy oil.
Embodiment 1: average acoustic energy density: 60W/L
Supersonic frequency: 40kHz
Emulsifying temperature: 80 ℃
Emulsification times: 40min
Stir speed (S.S.): 300r/min
Water mixing rate: 1%
Particle diameter of dispersing phase: 3 μ m
Stabilization time: 140h (under 80 ℃ of conditions)
Embodiment 2 average acoustic energy density: 50W/L
Supersonic frequency: 30kHz
Emulsifying temperature: 70 ℃
Emulsification times: 35min
Stir speed (S.S.): 200r/min
Water mixing rate: 15%
Particle diameter of dispersing phase: 5 μ m
Stabilization time: 108h (under 80 ℃ of conditions)
Embodiment 3 average acoustic energy density: 40W/L
Supersonic frequency: 25kHz
Emulsifying temperature: 60 ℃
Emulsification times: 30min
Stir speed (S.S.): 100r/min
Water mixing rate: 25%
Particle diameter of dispersing phase: 8 μ m
Stabilization time: 90h is (80 ℃ of conditions

Claims (2)

1. method of producing high-quality emulsified heavy oil is characterized in that: this method adopts ultrasonic wave and the synergistic associating emulsifying technology of mechanical agitation that heavy oil is carried out emulsification;
Concrete grammar is: the mixture of heavy oil and water is positioned in the emulsifying tank, and top adopts mechanical agitator to carry out emulsification, and the supersonic generator of bottom sends ultrasonic wave and carries out emulsification in the inner cavitation that produces of mixture;
Adopt hyperacoustic technical parameter to be: average acoustic energy density 50~60W/L, supersonic frequency 25~40kHz, during mechanical agitation: stir speed (S.S.) 100~300r/min, 70~80 ℃ of emulsifying temperatures, emulsification times 30~40min,
The water mixing rate is 1~25%.
2. the method for producing high-quality emulsified heavy oil according to claim 1 is characterized in that: through microscopic examination, adopt the Sauter mean diameter computing method, try to achieve the average grain diameter of decentralized photo; Adopt the quiescence in high temperature method, detect the stability of emulsification heavy oil.
CN201010182826.6A 2010-05-26 2010-05-26 Method for preparing high-quality emulsified heavy oil Expired - Fee Related CN101837256B (en)

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Publication number Priority date Publication date Assignee Title
WO2013097087A1 (en) * 2011-12-27 2013-07-04 Huang Yubin Ultrasonic emulsification method and apparatus for replacing clouding agents
CN102836663B (en) * 2012-09-17 2014-10-01 三一重型装备有限公司 Proportioning device for emulsion
CN105928849A (en) * 2016-04-26 2016-09-07 长安大学 Method for evaluating storage stability of penetrated oil layer emulsified asphalt
CN108568224A (en) * 2018-04-19 2018-09-25 武汉嘉鹏电子有限公司 A kind of ultrasonic emulsification device and its emulsification method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101412919A (en) * 2008-10-15 2009-04-22 天津大学 Oxidation sweetening continuous reaction apparatus for petroleum product and operation method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101412919A (en) * 2008-10-15 2009-04-22 天津大学 Oxidation sweetening continuous reaction apparatus for petroleum product and operation method thereof

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