CN101914399B - Method for preparing emulsified fuel by utilizing high-molecular hollow fiber porous membrane - Google Patents
Method for preparing emulsified fuel by utilizing high-molecular hollow fiber porous membrane Download PDFInfo
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Abstract
The invention relates to a method for preparing emulsified fuel by utilizing a high-molecular hollow fiber porous membrane, which is characterized by comprising the following steps: (1) assembling a hollow fiber membrane in a membrane shell; (2) mixing 87.8-99.9 portions of fuel by weight, 0.1-2.2 portions of surfactant by weight and 0-10 portions of assistant by weight as the continuous phase, sending the continuous phase to the inner side of the hollow fiber membrane, and circulating the continuous phase at the inner side of the hollow fiber membrane; (3) mixing 1-20 portions of water or methanol by weight, 0.1-5 portions of surfactant by weight and 0-10 portions of assistant by weight as the dispersed phase, and sending the dispersed phase to the outer side of the hollow fiber membrane; (4) controlling the pressure difference between the inner side and the outer side of the hollow fiber membrane at 0.005-0.2 MPa, wherein the pressure on the outer side of the hollow fiber membrane is greater than that on the inner side of the hollow fiber membrane, so that the dispersed phase can enter the continuous phase; and (5) after the dispersed phase completely enters the continuous phase, keeping the continuous phase to continue circulation, thereby obtaining the emulsified fuel. The invention greatly enhances the stability of the emulsified fuel, only consumes the power of a transfer pump, thus having the advantage of energy saving as compared with stirring and homogenizing methods.
Description
Technical field
The present invention relates to a kind of technology of preparing of emulsified fuel, especially a kind of method with polymeric hollow fiber multihole membrane prepare emulsified fuel.
Background technology
Be external phase with fuel oil (for example diesel oil, gasoline), water etc. are disperse phase, under the effect of emulsifying agent and auxiliary agent, can be made into emulsified fuel.Because the boiling point of water is low than fuel oil; in the fuel engines cylinder under the nearly 2000 ℃ high temperature; the water droplet is at first vaporized; form numerous " blasting point "; make fuel oil form microparticulate in combustion medium (air or oxygen etc.); improve the secondary-atomizing effect of fuel oil; improve the combustion efficacy of fuel oil; reduce fuel oil and phenomenons such as black smoke occurred because incomplete combustion causes exhaust emissions; simultaneously, high-temperature vapor can suppress engine cylinder knot carbon on the one hand, on the other hand; can carry out the water-gas conversion to the carbon that forms in the cylinder; make it to form combustible gas, play the purpose of protection engine, also reduced the CO in the exhaust emissions; emission of harmful substances such as NOx; both save the energy, protected environment again.Be a kind of energy-conserving and environment-protective technology preferably, have very wide application prospect.
The method for preparing emulsified fuel mainly contains paddling process, homogeneous method, ultrasonic dispersion and embrane method.The emulsified fuel particle diameter of paddling process and the preparation of homogeneous method is bigger, and stationary phase is shorter, needs to add more emulsifying agent and auxiliary agent, and used power is bigger, causes production cost higher, can not adapt to the requirement of large-scale industrial application simultaneously.Supersonic method also exists power consumption big, the requirement of the big incompatibility heavy industrialization of facility investment.Embrane method emulsification mainly contains sintered glass film (SPG film) and ceramic membrane (" chemical industry journal " 2005 with film; 56 (7); 1284-1287); than hollow fiber polymer membrane; the aperture homogeneity is not high, and the unit volume film throughput is less than normal, makes emulsified fuel fail to obtain basic solution at aspects such as storing chronicity, processing capability scaleization, low manufacturing cost; restrict industrial application, failed to obtain substantial progress.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of method of utilizing polymeric hollow fiber multihole membrane prepare emulsified fuel is provided, the emulsified fuel particle diameter of preparation is less, and stationary phase is longer.
According to technical scheme provided by the invention, the described method of utilizing polymeric hollow fiber multihole membrane prepare emulsified fuel is characterized in that described method comprises following processing step, and its component is counted by weight:
(1) hollow-fibre membrane is assembled in the putamina;
(2) 87.8～99.9 parts fuel oil, tensio-active agent and 0～10 part of auxiliary agent of 0.1～2.2 part are mixed as external phase, send into the film inboard of hollow-fibre membrane, and in the film circulates inside; The circulation velocity of described external phase is 0.05～10 meter per second;
(3) auxiliary agent with 1～20 part water or methyl alcohol, 0.1～5 part of tensio-active agent and 0～10 part mixes as disperse phase, sends into the film outside of hollow-fibre membrane;
(4) pressure difference in the outside is 0.005～0.2MPa in the control hollow-fibre membrane, and the pressure in the described film outside makes disperse phase enter external phase greater than the pressure of film inboard;
(5) after disperse phase enters external phase fully, the external phase of keeping the film inboard continues circulation 1～300min and obtains emulsified fuel; The circulation velocity of described external phase is 0.05～10 meter per second.
Described fuel oil is one or more in gasoline, diesel oil or the kerosene.
Described tensio-active agent is Span-80, fatty amine salt, ethanolamine salt, the many ammonium salts of polyethylene, imidazoline type, morpholine type, the guanidine class, Sodium dodecylbenzene sulfonate, linear alkylbenzene sulphonic acid, alkylsulfonate, sulfonated, alkyl glyceryl ether sulfonate, fatty alcohol sulfate salt, fatty alcohol-polyoxyethylene ether, sorbitan monostearate, sorbitan mono-laurate, polyoxyethylene 20 sorbitan monooleate, polyoxyethylene 20 sorbitan monostearate, in the tween 20 one or more.
Described auxiliary agent is one or more in ethanol, n-propyl alcohol, Virahol, propyl carbinol, isopropylcarbinol, n-hexyl alcohol, Pentyl alcohol, primary isoamyl alcohol, vinyl acetic monomer, propyl acetate and the N-BUTYL ACETATE.
Described hollow-fibre membrane is polyethersulfone, polysulfones, polyvinylidene difluoride (PVDF), polyvinyl chloride, polypropylene or polyethylene hollow fiber film.
The internal diameter of described hollow-fibre membrane is 0.6～3.0mm, and the external diameter of described hollow-fibre membrane is 0.8～4.8mm.
The aperture of described hollow-fibre membrane is 15～400nm.
The dispersed phase drop size of the emulsified fuel that the present invention makes can be as small as nano level, improves the stability of emulsified fuel greatly; During the phase, the comparable stirring of emulsifying agent consumption and homogeneous method save about 40% in same stored; Its power consumption only is the power of transferpump, and is more energy-conservation greatly than stirring and homogeneous method.
Embodiment
The invention will be further described below in conjunction with specific embodiment.
Embodiment one: a kind of method of utilizing polymeric hollow fiber multihole membrane prepare emulsified fuel, and its component is counted by weight, comprises following processing step:
(1) the polyethersulfone hollow-fibre membrane is assembled in the putamina; The internal diameter of described polyethersulfone hollow-fibre membrane is 1.0mm, and the external diameter of described polyethersulfone hollow-fibre membrane is 1.5mm; The aperture of described polyethersulfone hollow-fibre membrane is 25nm;
(2) 87.8 parts gasoline, 0.1 part Span-80 tensio-active agent are mixed as external phase, send into the film inboard of polyethersulfone hollow-fibre membrane, and in the film circulates inside; The circulation velocity of described external phase is 0.5 meter per second;
(3) 10 parts water, 0.1 part tween 20 tensio-active agent are mixed as disperse phase, send into the film outside of polyethersulfone hollow-fibre membrane;
(4) pressure difference in the outside is 0.05MPa in the control polyethersulfone hollow-fibre membrane, and the pressure in the described film outside makes disperse phase enter external phase greater than the pressure of film inboard;
(5) after disperse phase enters external phase fully, the external phase of keeping the film inboard continues circulation 1min and obtains emulsified fuel; The circulation velocity of described external phase is 0.5 meter per second.
Getting gained emulsified fuel 0.05ml dilution back is 42nm with laser light scattering instrument detection emulsion particle diameter, and dispersion coefficient is 0.18, and the ambient stable time is 85 days.
Embodiment two: a kind of method of utilizing polymeric hollow fiber multihole membrane prepare emulsified fuel, and its component is counted by weight, comprises following processing step:
(1) ps hollow fiber uf membrane is assembled in the putamina; The internal diameter of described ps hollow fiber uf membrane is 3.0mm, and the external diameter of described ps hollow fiber uf membrane is 4.8mm; The aperture of described ps hollow fiber uf membrane is 35nm;
(2) 99.9 parts diesel oil, tween 20 and 1 part of ethanol auxiliary agent of 2.2 parts are mixed as external phase, send into the film inboard of ps hollow fiber uf membrane, and in the film circulates inside; The circulation velocity of described external phase is 10 meter per seconds;
(3) n-propyl alcohol with 20 parts methyl alcohol, 5 parts of Sodium dodecylbenzene sulfonatees and 10 parts mixes as disperse phase, sends into the film outside of poly-inkstone hollow-fibre membrane;
(4) pressure difference in the outside is 0.02MPa in the control ps hollow fiber uf membrane, and the pressure in the described film outside makes disperse phase enter external phase greater than the pressure of film inboard;
(5) after disperse phase enters external phase fully, the external phase of keeping the film inboard continues circulation 300min and obtains emulsified fuel; The circulation velocity of described external phase is 10 meter per seconds.
Getting gained emulsified fuel 0.05ml dilution back is 34nm with laser light scattering instrument detection emulsion particle diameter, and dispersion coefficient is 0.16, and the ambient stable time is 97 days.
Embodiment three: a kind of method of utilizing polymeric hollow fiber multihole membrane prepare emulsified fuel, and its component is counted by weight, comprises following processing step:
(1) the polyvinylidene difluoride (PVDF) hollow-fibre membrane is assembled in the putamina; The internal diameter of described polyvinylidene difluoride (PVDF) hollow-fibre membrane is 2.0mm, and the external diameter of described polyvinylidene difluoride (PVDF) hollow-fibre membrane is 2mm; The aperture of described polyvinylidene difluoride (PVDF) hollow-fibre membrane is 100nm;
(2) 90 parts kerosene, sorbitan mono-laurate and 5 parts of Virahols of 1 part are mixed as external phase, send into the film inboard of polyvinylidene difluoride (PVDF) hollow-fibre membrane, and in the film circulates inside; The circulation velocity of described external phase is 5 meter per seconds;
(3) propyl carbinol with 10 parts water, 2 parts of polyoxyethylene 20 sorbitan monostearates and 5 parts mixes as disperse phase, sends into the film outside of polyvinylidene difluoride (PVDF) hollow-fibre membrane;
(4) pressure difference in the outside is 0.1MPa in the control hollow-fibre membrane, and the pressure in the described film outside makes disperse phase enter external phase greater than the pressure of film inboard;
(5) after disperse phase enters external phase fully, the external phase of keeping the film inboard continues circulation 150min and obtains emulsified fuel; The circulation velocity of described external phase is 5 meter per seconds.
Getting gained emulsified fuel 0.05ml dilution back is 46nm with laser light scattering instrument detection emulsion particle diameter, and dispersion coefficient is 0.17, and the ambient stable time is 90 days.
Claims (2)
1. a method of utilizing polymeric hollow fiber multihole membrane prepare emulsified fuel is characterized in that its component is counted by weight, comprises following processing step:
(1) hollow-fibre membrane is assembled in the putamina;
(2) 87.8～99.9 parts fuel oil, tensio-active agent and 0～10 part of auxiliary agent of 0.1～2.2 part are mixed as external phase, send into the film inboard of hollow-fibre membrane, and in the film circulates inside; The circulation velocity of described external phase is 0.05～10 meter per second;
(3) auxiliary agent with 1～20 part water or methyl alcohol, 0.1～5 part of tensio-active agent and 0～10 part mixes as disperse phase, sends into the film outside of hollow-fibre membrane;
(4) pressure difference in the outside is 0.005～0.2MPa in the control hollow-fibre membrane, and the pressure in the described film outside makes disperse phase enter external phase greater than the pressure of film inboard;
(5) after disperse phase enters external phase fully, the external phase of keeping the film inboard continues circulation 1～300min and obtains emulsified fuel; The circulation velocity of described external phase is 0.05～10 meter per second;
Described fuel oil is one or more in gasoline, diesel oil or the kerosene;
Described tensio-active agent is Span-80, fatty amine salt, ethanolamine salt, the many ammonium salts of polyethylene, imidazoline type, morpholine type, the guanidine class, Sodium dodecylbenzene sulfonate, linear alkylbenzene sulphonic acid, alkylsulfonate, sulfonated, alkyl glyceryl ether sulfonate, fatty alcohol sulfate salt, fatty alcohol-polyoxyethylene ether, sorbitan monostearate, sorbitan mono-laurate, polyoxyethylene 20 sorbitan monooleate, polyoxyethylene 20 sorbitan monostearate, in the tween 20 one or more;
Described auxiliary agent is one or more in ethanol, n-propyl alcohol, Virahol, propyl carbinol, isopropylcarbinol, n-hexyl alcohol, Pentyl alcohol, primary isoamyl alcohol, vinyl acetic monomer, propyl acetate and the N-BUTYL ACETATE;
Described hollow-fibre membrane is polyethersulfone, polysulfones, polyvinylidene difluoride (PVDF), polyvinyl chloride, polypropylene or polyethylene hollow fiber film;
The internal diameter of described hollow-fibre membrane is 0.6～3.0mm, and the external diameter of described hollow-fibre membrane is 0.8～4.8mm;
The aperture of described hollow-fibre membrane is 15～400nm.
2. utilize the method for polymeric hollow fiber multihole membrane prepare emulsified fuel according to claim 1, it is characterized in that, the aperture of described hollow-fibre membrane is 20～100nm.
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| CN 201010220899 CN101914399B (en) | 2010-07-02 | 2010-07-02 | Method for preparing emulsified fuel by utilizing high-molecular hollow fiber porous membrane |
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| CN 201010220899 CN101914399B (en) | 2010-07-02 | 2010-07-02 | Method for preparing emulsified fuel by utilizing high-molecular hollow fiber porous membrane |
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| CN101914399A CN101914399A (en) | 2010-12-15 |
| CN101914399B true CN101914399B (en) | 2013-08-07 |
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| CN106635131B (en) * | 2016-12-16 | 2018-06-12 | 南京工大釜鼎能源技术有限公司 | A kind of preparation method of emulsification heavy oil |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558941A (en) * | 2001-08-27 | 2004-12-29 | 多孔媒介公司 | Oil dehydrator |
| CN101538490A (en) * | 2009-04-30 | 2009-09-23 | 合肥工业大学 | Micro-emulsified biomass fuel and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558941A (en) * | 2001-08-27 | 2004-12-29 | 多孔媒介公司 | Oil dehydrator |
| CN101538490A (en) * | 2009-04-30 | 2009-09-23 | 合肥工业大学 | Micro-emulsified biomass fuel and preparation method thereof |
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Effective date of registration: 20160516 Address after: 01, 210019 floor, Metro science and technology building, 69 Olympic Sports Avenue, Jianye District, Jiangsu, Nanjing, 16 Patentee after: NANJING DINGSHIHE MEMBRANE TECHNOLOGY CO., LTD. Address before: 214122 Jiangsu Province, Wuxi City Lake Road No. 1800, Jiangnan University Patentee before: Jiangnan University |
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