CN115595183B - Sustainable aviation fuel-based nanofluid fuel and implementation method thereof - Google Patents
Sustainable aviation fuel-based nanofluid fuel and implementation method thereof Download PDFInfo
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- CN115595183B CN115595183B CN202211245083.1A CN202211245083A CN115595183B CN 115595183 B CN115595183 B CN 115595183B CN 202211245083 A CN202211245083 A CN 202211245083A CN 115595183 B CN115595183 B CN 115595183B
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Abstract
A sustainable aviation fuel-based nano fluid fuel and a realization method thereof are provided, wherein the substrate fuel and carbon-based high-energy nano particles serving as a combustion enhancer are mixed in proportion and then uniformly dispersed under magnetic stirring and ultrasonic dispersion, diversified hydrogen bond acceptor elements are introduced into a nano structure, and the reinforcement of the hydrogen bond stabilizing effect of the nano particles in a fuel system is realized. According to the invention, a novel inorganic carbon synthesis method is adopted, from an inorganic nano structure, diversified hydrogen bond acceptor elements such as N, O and S are introduced into the nano structure, and the hydrogen bond stabilizing effect of nano particles in a fuel system is enhanced through a bionic hydrogen bond strategy, so that the ultra-long-time stable dispersion of sustainable aviation fuel-based nano fluid fuel is realized.
Description
Technical Field
The invention relates to a technology in the field of aviation fuels, in particular to sustainable aviation fuel-based nanofluid fuel capable of being stably dispersed for more than 90 days and a realization method thereof.
Background
When the biomass substitute fuel is mixed into the existing aviation kerosene, the combustion heat value of the aviation kerosene is greatly reduced (the heat value of the biomass substitute fuel is about 26.0MJ/kg, and the heat value of the pure coal oil is about 45.0 MJ/kg), and the flight distance is obviously shortened. In order to improve the sustainability of Sustainable Aviation Fuels (SAFs) and the volumetric energy density of liquid fuels, high energy nanofluidic fuels are formed by mixing high energy density containing materials (HEDMs) into liquid hydrocarbon fuels, but because the density of the HEDMs is much higher than that of liquid hydrocarbon fuels, precipitation and aggregation phenomena occur when the HEDMs are added to liquid fuels. Thus, the greatest challenge in adding HEDM to liquid fuels is how to ensure the stability of the suspension.
Disclosure of Invention
Aiming at the defect that the prior art cannot effectively realize long-term stable dispersion of nano-fluid fuel, the invention provides sustainable aviation fuel-based nano-fluid fuel and a realization method thereof, a novel inorganic carbon synthesis method is adopted, from an inorganic nano structure, diversified hydrogen bond acceptor elements such as N, O and S and the like are introduced into the nano structure, and the hydrogen bond stabilizing effect of nano particles in a fuel system is enhanced through a bionic hydrogen bond strategy, so that the sustainable aviation fuel-based nano-fluid fuel can be stably dispersed for an ultra-long time.
The invention is realized by the following technical scheme:
the invention relates to a realization method of sustainable aviation fuel-based nanofluid fuel, which comprises the steps of mixing matrix fuel and carbon-based high-energy nanoparticles serving as combustion reinforcing agents in proportion, uniformly dispersing under magnetic stirring and ultrasonic dispersion, and introducing diversified hydrogen bond acceptor elements into a nanostructure to realize reinforcement of the hydrogen bond stabilizing effect of the nanoparticles in a fuel system.
The carbon-based high-energy nanoparticle is preferably carbonized polyphosphazene, and more preferably has a carbonization temperature of 500-900 ℃.
The mass ratio of the carbonized polyphosphazene to the matrix mixed fuel is 0.1-0.5%.
The matrix mixed fuel is preferably composed of RP-3 kerosene and ethanol, and more preferably the ratio of the RP-3 kerosene to the ethanol is 1:1.
The magnetic stirring is preferably carried out for 30min under 1600r/min setting.
The ultrasonic dispersion is preferably carried out for 2 hours at the temperature of 192W and 50 ℃.
The invention relates to a nanofluid fuel prepared by the method, which consists of a matrix mixed fuel and carbonized polyphosphazene, wherein: the mass ratio E50/K50 of the RP-3 kerosene and the ethanol in the matrix mixed fuel is 50:50, the carbonization temperature CPZS of the Carbonized Polyphosphazene (CPZS) is 500, 700 and 900 ℃ respectively; the mass proportion of the carbonized polyphosphazene to the matrix mixed fuel is 0.1-0.5%.
Drawings
Fig. 1 is a graph of the microscopic morphology of CPZS at different carbonization temperatures;
FIG. 2 is a graph of probability of ignition, ignition temperature, and ignition delay time for E50/K50 (a and b) and 0.1% -0.5% CPZS-700/(E50/K50) fuels, including 0.5% CPZS-500 and 0.5% CPZS-900) (c and d);
FIG. 3 is a graph of E50/K50 and 0.5% CPZS-700/(E50/K50) evaporation at 785 ℃;
FIG. 4 is a graph of dispersion sedimentation recordings of 0.1% -0.5% CPZS-700/(E50/K50) nanofluidic fuel suspensions over time.
Detailed Description
Example 1
The present example configures nanofluidic fuel in the following proportions:
step one, adding E50/K50 with the mass of 1g into a beaker;
step two, adding CPZS-500 into the beaker, wherein the mass percentage content is 0.5%;
and thirdly, uniformly dispersing the nanofluid fuel by magnetic stirring for 30min (1600 r/min) and ultrasonic dispersing for 2 hours (192W, 50 ℃).
The present example uses a hanging drop ignition experimental apparatus and a high speed camera to measure the ignition and combustion characteristics of 0.5% CPZS-500/(E50/K50) nanofluid fuel, respectively, and enumerates the ignition and combustion conditions with 0.5% CPZS-500/(E50/K50). Wherein, the microscopic morphology of the CPZS-500 at the carbonization temperature of 500 ℃ is shown in figure 1.
As shown in fig. 2, the ignition probability of the E50/K50-based nano-fluid fuel added with 0.5% of cpzs-500 in the embodiment is basically consistent with the change of 0.1% of cpzs-700/(E50/K50) along with the environmental temperature, and the environmental temperature reaching 100% of ignition probability is 825 ℃; the ignition temperature is 391 ℃ (ambient temperature 900 ℃); at 975 c, the ignition delay time is 812ms.
Example 2
The present example configures nanofluidic fuel in the following proportions:
step one, adding E50/K50 with the mass of 1g into a beaker;
step two, adding CPZS-700 into the beaker, wherein the mass percentage content is 0.1%;
and thirdly, uniformly dispersing the nanofluid fuel by magnetic stirring for 30min (1600 r/min) and ultrasonic dispersing for 2 hours (192W, 50 ℃).
The present example uses a hanging drop ignition experimental apparatus and a high-speed camera to measure the ignition and combustion characteristics of 0.1% CPZS-700/(E50/K50) nanofluid fuel, respectively, and enumerates the ignition and combustion conditions with 0.1% CPZS-700/(E50/K50). Wherein, the microscopic morphology of the CPZS-700 at the carbonization temperature of 700 ℃ is shown in figure 1.
As shown in fig. 2 and 4, the environmental temperature for the E50/K50-based nanofluid fuel added with 0.1% cpzs-700 to reach 100% ignition probability in this example was 825 ℃ through testing; the ignition temperature is 395 ℃ (ambient temperature 900 ℃); at 975 ℃, the ignition delay time is 736ms; and it was achieved that no sedimentation occurred for 90 days.
Example 3
The present example configures nanofluidic fuel in the following proportions:
step one, adding E50/K50 with the mass of 1g into a beaker;
step two, adding CPZS-700 into the beaker, wherein the mass percentage content is 0.2%;
and thirdly, uniformly dispersing the nanofluid fuel by magnetic stirring for 30min (1600 r/min) and ultrasonic dispersing for 2 hours (192W, 50 ℃).
The present example uses a hanging drop ignition experimental apparatus and a high speed camera to measure the ignition and combustion characteristics of 0.2% cpzs-700/(E50/K50) nanofluid fuel, respectively. The ignition and combustion conditions are listed with 0.2% CPZS-700/(E50/K50).
As shown in fig. 2 and 4, the environmental temperature for the E50/K50-based nanofluid fuel added with 0.2% cpzs-700 to reach 100% ignition probability in this example was 815 ℃ through testing; the ignition temperature is 385 ℃ (ambient temperature 900 ℃); at 975 ℃, the ignition delay time is 637ms; and it was achieved that no sedimentation occurred for 70 days.
Example 4
The present example configures nanofluidic fuel in the following proportions:
step one, adding E50/K50 with the mass of 1g into a beaker;
step two, adding CPZS-700 into the beaker, wherein the mass percentage content is 0.3%;
and thirdly, uniformly dispersing the nanofluid fuel by magnetic stirring for 30min (1600 r/min) and ultrasonic dispersing for 2 hours (192W, 50 ℃).
The present example uses a hanging drop ignition experimental apparatus and a high speed camera to measure the ignition and combustion characteristics of 0.3% cpzs-700/(E50/K50) nanofluid fuel, respectively. The ignition and combustion conditions are listed with 0.3% CPZS-700/(E50/K50).
As shown in fig. 2 and 4, the environmental temperature for the E50/K50-based nanofluid fuel added with 0.3% cpzs-700 to reach 100% ignition probability in this example was 810 ℃ through testing; the ignition temperature is 383 ℃ (ambient temperature 900 ℃); at 975 ℃, the ignition delay time is 589ms; and it was achieved that no sedimentation occurred for 90 days.
Example 5
The present example configures nanofluidic fuel in the following proportions:
step one, adding E50/K50 with the mass of 1g into a beaker;
step two, adding CPZS-700 into the beaker, wherein the mass percentage content is 0.4%;
and thirdly, uniformly dispersing the nanofluid fuel by magnetic stirring for 30min (1600 r/min) and ultrasonic dispersing for 2 hours (192W, 50 ℃).
The present example uses a hanging drop ignition experimental apparatus and a high speed camera to measure the ignition and combustion characteristics of 0.4% cpzs-700/(E50/K50) nanofluid fuel, respectively. The ignition and combustion conditions are listed with 0.4% CPZS-700/(E50/K50).
As shown in fig. 2 and 4, the environmental temperature for the E50/K50-based nanofluid fuel added with 0.4% cpzs-700 to reach 100% ignition probability in this example was 795 ℃ through testing; ignition temperature is 375 ℃ (ambient temperature 900 ℃); ignition delay time 479ms at 975 ℃; and it was achieved that no sedimentation occurred for 90 days.
Example 6
The present example configures nanofluidic fuel in the following proportions:
step one, adding E50/K50 with the mass of 1g into a beaker;
step two, adding CPZS-700 into the beaker, wherein the mass percentage content is 0.5%;
and thirdly, uniformly dispersing the nanofluid fuel by magnetic stirring for 30min (1600 r/min) and ultrasonic dispersing for 2 hours (192W, 50 ℃).
The present example uses a hanging drop ignition experimental apparatus and a high speed camera to measure the ignition and combustion characteristics of 0.5% cpzs-700/(E50/K50) nanofluid fuel, respectively. The ignition and combustion conditions are listed with 0.5% CPZS-700/(E50/K50).
As shown in fig. 2, 3 and 4, the environmental temperature for the E50/K50-based nanofluid fuel added with 0.5% cpzs-700 to achieve 100% ignition probability in this example was 790 ℃ tested; the ignition temperature is 360 ℃ (ambient temperature 900 ℃); at 975 ℃, the ignition delay time is 243ms;0.5% CPZS-700/(E50/K50) nano fluid fuel is evaporated without micro explosion; and it was achieved that no sedimentation occurred for 90 days.
Example 7
The present example configures nanofluidic fuel in the following proportions:
step one, adding E50/K50 with the mass of 1g into a beaker;
step two, adding CPZS-900 into the beaker, wherein the mass percentage content is 0.5%;
and thirdly, uniformly dispersing the nanofluid fuel by magnetic stirring for 30min (1600 r/min) and ultrasonic dispersing for 2 hours (192W, 50 ℃).
The present example uses a hanging drop ignition experimental apparatus and a high-speed camera to measure the ignition and combustion characteristics of 0.5% CPZS-900/(E50/K50) nanofluid fuel, respectively, and enumerates the ignition and combustion conditions with 0.5% CPZS-900/(E50/K50). Wherein, the microscopic morphology of the CPZS-900 at the carbonization temperature of 900 ℃ is shown in figure 1.
As shown in fig. 2, the environmental temperature of the E50/K50-based nanofluid fuel added with 0.5% cpzs-900 to achieve 100% ignition probability in this example was 800 ℃ tested; ignition temperature is 375 ℃ (ambient temperature 900 ℃); at 975 deg.c, the ignition delay time is 201ms.
Compared with the prior art, the method starts from an inorganic nano structure based on a bionic hydrogen bond strategy by adopting a novel inorganic carbon synthesis method, introduces diversified hydrogen bond acceptor elements such as N, O and S and the like into the nano structure, and maintains long-term stable dispersion by utilizing the high-energy sustainable aviation fuel-based nano fluid fuel formed by carbonized polyphosphazene. The nano fluid fuel prepared by the method realizes stable dispersion for more than 90 days based on a bionic hydrogen bond strategy, and has remarkable enhancement effect on evaporation, ignition and combustion performance of the fuel. The prepared nanofluid fuel has the advantages of stable physical form, no layering, good dispersion stability in normal temperature environment, simple operation, high practicability and the like.
The foregoing embodiments may be partially modified in numerous ways by those skilled in the art without departing from the principles and spirit of the invention, the scope of which is defined in the claims and not by the foregoing embodiments, and all such implementations are within the scope of the invention.
Claims (7)
1. The realization method of sustainable aviation fuel-based nanofluid fuel is characterized in that a matrix mixed fuel and carbon-based high-energy nanoparticles serving as a combustion enhancer are mixed in proportion and then uniformly dispersed under magnetic stirring and ultrasonic dispersion, and diversified hydrogen bond acceptor elements are introduced into a nanostructure, so that the reinforcement of the hydrogen bond stabilizing effect of the nanoparticles in a fuel system is realized;
the carbon-based high-energy nano particles are carbonized polyphosphazene.
2. The method for realizing sustainable aviation fuel-based nanofluid fuel according to claim 1, wherein the carbonization temperature of carbonized polyphosphazene is 500-900 ℃.
3. The method for realizing the sustainable aviation fuel-based nanofluid fuel according to claim 1, wherein the mass ratio of the carbonized polyphosphazene to the matrix mixed fuel is 0.1-0.5%.
4. The method for realizing the sustainable aviation fuel-based nanofluid fuel according to claim 1, wherein the matrix fuel blend consists of RP-3 kerosene and ethanol.
5. The method for realizing sustainable aviation fuel-based nanofluid fuel according to claim 1, wherein the magnetic stirring is carried out for 30min at 1600 r/min.
6. The method for realizing the sustainable aviation fuel-based nanofluid fuel according to claim 1, wherein the ultrasonic dispersion is 192W and is processed for 2 hours at 50 ℃.
7. A nanofluidic fuel prepared according to any one of claims 1-6, consisting of a matrix fuel blend and a carbonized polyphosphazene, wherein: the mass ratio E50/K50 of the RP-3 kerosene and the ethanol in the matrix mixed fuel is 50:50, the carbonization temperature CPZS of the Carbonized Polyphosphazene (CPZS) is 500, 700 and 900 ℃ respectively; the mass proportion of the carbonized polyphosphazene to the matrix mixed fuel is 0.1-0.5%.
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| AU2006296396A1 (en) * | 2005-09-30 | 2007-04-05 | International Fuel Technology Inc. | Fuel compositions containing fuel additive |
| CN105621390A (en) * | 2015-12-31 | 2016-06-01 | 上海交通大学 | Preparation method of heteroatom-doped carbon hollow microspheres |
| CN106190344A (en) * | 2016-08-04 | 2016-12-07 | 浙江大学 | A kind of method preparing high energy composite carbon hydrogen fuel and fuel thereof |
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Patent Citations (4)
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| JP2006216503A (en) * | 2005-02-07 | 2006-08-17 | Nissan Motor Co Ltd | Catalyst layer of solid polymer fuel cell |
| AU2006296396A1 (en) * | 2005-09-30 | 2007-04-05 | International Fuel Technology Inc. | Fuel compositions containing fuel additive |
| CN105621390A (en) * | 2015-12-31 | 2016-06-01 | 上海交通大学 | Preparation method of heteroatom-doped carbon hollow microspheres |
| CN106190344A (en) * | 2016-08-04 | 2016-12-07 | 浙江大学 | A kind of method preparing high energy composite carbon hydrogen fuel and fuel thereof |
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| 聚磷腈在航空航天高分子材料中的应用;李爱元;张慧波;陈亚东;王建中;储昭荣;;化学推进剂与高分子材料(06);40, 43 * |
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