Mixed Fuels Research Articles

Combustion of suspensions of mixed aluminum and silicon carbide in the products of hydrocarbon flames

A stabilized methane/air Bunsen flame is seeded with powder fuel mixtures containing various combinations of spherical, micron-sized aluminum (Valimet H-2 with nominal d50 = 3.5 µm and H-15 with nominal d50 = 20 µm) and silicon carbide (SiC) at different mass ratios over a ∼0-400 g/m3 concentration range. It is observed that in dispersions of only H-2 aluminum, a bright white aluminum flame front forms and couples to the methane-air flame, resulting in a sustained flame speed even at concentrations beyond 400 g/m3. In contrast, dispersions of only H-15 powder decrease flame speed rapidly and cause an open-tipped methane-air flame at concentrations beyond 200 g/m3, similar to inert SiC powder. When blended together into H-2:H-15 1:1 (mass ratio) mixture dispersions, an aluminum flame front forms and couples to the methane-air flame, with a flame speed comparable to unitary H-2 aluminum in contrast to mixtures of H-2:SiC 3:1 which produce no noticeable difference in flame speed from purely inert mixtures of SiC at nearly 200 g/m3. Mixtures of H-2:SiC 3:1 demonstrate an aluminum flame coupling to the methane flame, but with an increased separation between the fronts that was not observed in previous hybrid flames studies. The flame temperatures, flame coupling, and aluminum combustion efficiency behaviors are attributed to the effective amount of slowly reacting or inert solid material in the mixed powder fuels. The behaviors are consistent with a simple hybrid flames model, developed in previous work, where the effectively reduced heat of reaction of the powder fuel is unable to support sufficient heat feedback to the methane-air flame permitting effective secondary flame front formation and flame-coupling. From this understanding, a method for determining the relative energy contribution of a lower reactivity component in a fuel mixture when it is thermally driven by a higher reactivity fuel is demonstrated using the secondary front formation and flame coupling as a benchmark for reaching a certain heat of reaction of the fuel solid mixture. It is estimated that the H-15 component of a H-2:H-15 1:2 mixture contributes to approximately 55% of the thermal energy required to achieve the same behavior as a H-2:SiC 3:1 fuel mixture.

Experimental and CFD Investigation of Fuel Mixing in an Optical-Access Direct-Injection NG Engine and Correlation with Test Rig Combustion and Performance Data

The present paper is the result of a cooperation between Politecnico di Torino and AVL List Gmbh within a recent collaborative research project funded by the EC. The research work was focused on the experimental and numerical characterization of mixture formation, combustion, and emissions in direct-injection NG engines, to draw useful indication for the design of innovative, high-performance engine concepts. As a matter of fact, direct-injection IC engines running on NG are believed to be a competitive transition solution towards a sustainable mobility scenario, given their maturity, technological readiness, and flexibility with respect to the fuel quality. Moreover, gaseous-fuel engines can further decrease their carbon footprint if blending of natural gas with hydrogen is considered. Provided that mixture formation represents a key aspect for the design of direct-injection engines, the activity presented in this paper is focused on the characterization of NG injection and on the mixing process, as well as the impact these latter hold on the combustion process as well as on engine-out emissions. The mixture formation process was analyzed by means of combined CFD and optical investigations. Furthermore, a full version of the engine was tested on a dynamic test rig, providing quantitative information on the engine performance and emission characteristics. The CFD results highlighted the correlation between the mixture homogeneity and the combustion stability and hinted at a relevant impact of the jet characteristics on the air charge tumble and turbulence characteristics.

Simulating flexibility, variability and decentralisation with an integrated energy system model for Great Britain

Energy system models allow the development and assessment of ambitious transition pathways towards a sustainable energy system. However, current models lack adequate spatial and temporal resolution to capture the implications of a shift to decentralised energy supply and storage across multiple local energy vectors to meet spatially variable energy demand. There is also a lack of representation of interactions with the transport sector as well as national and local energy system operation. Here, we bridge these gaps with a high-resolution system-of-systems modelling framework which is applied to Great Britain to simulate differences between the performance of decarbonised energy systems in 2050 through two distinct strategies, an electric strategy and a multi-vector strategy prioritising a mix of fuels, including hydrogen. Within these strategies, we simulated the impacts of decentralised operation of the energy system given the variability of wind and across flexibility options including demand side management, battery storage and vehicle to grid services. Decentralised operation was shown to improve operational flexibility and maximise utilisation of renewables, whose electricity supplies can be cost-effectively converted to hydrogen or stored in batteries to meet peak electricity demands, therefore reducing carbon-intensive generation and the requirement for investment in expanding the electricity transmission network capacity.

Experimental investigation of the combustion instability behaviors and NOx emissions in an ammonia/methane fueled low eddy premixed burner

In this study, experimental analyzes were carried out to examine the combustion instability properties of methane-ammonia mixed fuels for a low eddy and premix burner. The aim of this study is to determine the effect of ammonia addition on combustion instability with different compelling acoustic frequencies, dynamic pressure amplitude, and light emission intensity. In addition, the effects of ammonia addition to methane fuel gas on temperature and emissions were also investigated. Pure methane and three different methane-ammonia mixtures as fuel at 0.7 equivalents and with three different acoustics have been used for analysis. The burner power was determined as 5 kW and the excitation frequencies of the combustion chamber were determined as 95, 160, and 300 Hz. As the ammonia addition increased, there was an increase in the flame instability values up to 30% NH3, especially at the 95 Hz frequency, where the highest distortion effect occurred. It was observed that there was no significant change in the combustion performance with the addition of ammonia to methane fuel. The predicted NOX emission levels were found to increase significantly due to nitrogen bound to ammonia. However, it is seen that the NOx emission levels in the exhaust measurements are not high.

Analysing the emissions and fuel efficiency of fish-waste biodiesel in a compression ignition engine

Fish oil extracted from wastes of freshwater fish catla (Labeo catla) was used to produce biodiesel. Biodiesel was blended with pure diesel in varying volumetric proportions of 10%, 20%, 30%, and 40%. A single cylinder constant speed diesel engine was employed for experimentation and effluents like HC, CO, and smoke for FBD-powered CI engine were lesser than that of diesel-powered engine; however, the effluents of NOx were more than that of diesel. Also, the performance characteristics like Brake thermal efficiency (BTE) of FBD mixed fuels are lowered, and specific fuel consumption (SFC) of FBD blends was enhanced with the increase of FBD concentration in diesel. At 2.11 kW Brake Power, the measured BTE %, CO, NOX, HC emissions for Diesel were 19.2%, 0.14%, 340, 38 ppm and the same for FBD40 were 15.5%, 0.7%, 425, 24 ppm respectively.

Qualitative characterization of nitrogen-containing compounds in jet and diesel fuel extracts by using (+) electrospray ionization coupled to a linear quadrupole ion trap/orbitrap mass spectrometer

The development of analytical methods for the characterization of nitrogen-containing compounds (NCCs) in liquid transportation fuels are critical, as these compounds adversely affect fuel storage and thermal stability. In this work, (+) electrospray ionization coupled to a linear quadrupole ion trap/orbitrap mass spectrometer provided detailed chemical analysis of the NCCs in jet and diesel fuels. Upon methanol extractions of the individual fuels (three jet fuels and one diesel), the methanol layer was diluted and injected into the ESI source where protonation was the dominant ionization reaction for the NCCs, which exhibited little to no fragmentation. Kendrick mass defect plots were constructed to facilitate chemical characterization. Many chemical classes of NCCs (i.e., alkylamines, pyridines, indoles, quinolines, carbazoles) were identified in the jet and diesel fuel extracts. Compositional differences were observed when the jet fuel extracts were compared to each other and when compared to the diesel extract. For example, the most abundant NCCs in Jet fuel 1 had empirical formulas of CnH(2n)N (decahydroquinolines/decahydroisoquinolines) and CnH(2n-6)N (indolines/tetrahydroquinolines/tetrahydroisoquinolines). Conversely, the most abundant NCCs in Jet fuel 2 had empirical formulas of CnH(2n-6)N and CnH(2n-10)N (quinolines/isoquinolines/naphthylamines) while the most abundant NCCs in Jet fuel 3 had empirical formulas of CnH(2n+4)N (alkylamines). The ionized NCCs derived from the jet fuels had wider carbon number ranges than compared to those reported in previous studies. The average molecular weights, ring and double bond equivalent values and total carbon numbers for the ionized NCCs in the four extracts ranged from 192.8–215.3 Da, 1.7–5.0 and 13.5–14.8, respectively. Further, the average carbon number for each homologue ion series (ions with the same empirical formula but differ by 14 Da) were determined. Collision-activated dissociation was also investigated to evaluate its efficacy at providing structural elucidation and isomeric differentiation for ionized NCCs. Overall, the high-resolution mass spectrometry measurements provided thorough chemical characterization that may aid in linking NCC compositions to storage and thermal stability failures and advance the current understanding of issues concerning fuel incompatibility upon the mixing of different fuels.

Understanding population exposure to size-segregated aerosol and associated trace elements during residential cooking in northeastern India: Implications for disease burden and health risk

Mass-size distribution of respirable aerosol and 13 associated trace elements (TEs) were investigated in rural kitchens using liquefied petroleum gas (LPG), firewood and mixed biomass fuels across three northeastern Indian states. The averaged PM10 (particulate matter with aerodynamic diameter ≤ 10 μm) and ΣTE concentrations were 403 and 30 μg m−3 for LPG, 2429 and 55 μg m−3 for firewood, and 1024 and 44 μg m−3 for mixed biomass-using kitchens. Mass-size distributions were tri-modal with peaks in the ultrafine (0.05–0.08 μm), accumulation (0.20–1.05 μm), and coarse (3.20–4.57 μm) modes. Respiratory deposition, estimated using the multiple path particle dosimetry model, ranged from 21 % to 58 % of the total concentration across fuel types and population age categories. Head, followed by pulmonary and tracheobronchial, was the most vulnerable deposition region, and children were the most susceptible age group. Inhalation risk assessment of TEs revealed significant non-carcinogenic as well as carcinogenic risk, especially for biomass fuel users. The potential years of life lost (PYLL) was the highest for chronic obstructive pulmonary disease (COPD: 15.9 ± 3.8 years) followed by lung cancer (10.3 ± 0.3 years) and pneumonia (10.1 ± 0.1 years), while the PYLL rate was also highest for COPD, with Cr(VI) being the major contributor. Overall, these findings reveal the significant health burden faced by the northeastern Indian population from indoor cooking using solid biomass fuels.

Technology of Obtaining Mixed Alternative Fuel Based on Organic Substances for Mining Technological Transport Engines

Abstract In connection with the increase in the price of fuel based on hydrocarbons, the search and use of alternative types of fuel for machines in the mining and oil production industry is quite relevant today. Most of the existing alternative fuels by themselves cannot be considered as ready-to-use motor fuels. One of the ways to solve this problem is to use their mixtures with commercial fuels in certain ratios. This work deals with the development and research of the main characteristics of the mixer for obtaining mixed fuels based on diesel fuel and soybean oil, as well as the results of the study of the physical and operational properties of the obtained mixtures of different volume ratios of diesel fuel and soybean oil. The process of obtaining a mixed alternative fuel based on diesel fuel and soybean oil was implemented on a developed installation consisting of a mixer, the design of which is protected by a patent of Ukraine, and a gear pump. The study of the characteristics of the mixer as part of the installation showed that at a temperature of the components of the alternative fuel of 20°С, with a loss of full pressure on the mixer Δр ≈ (60-65) kPa, the volume consumption of soybean oil reached 10.7.10-6 m3/s. The time of preparation of the fuel mixture in the amount of 195 liters with a content of soybean oil of 10% ranged from 30 to 33 minutes. As research has shown, mixing soybean oil with diesel fuel in the amount of 5-50% vol. provides an improvement in viscosity-temperature properties and makes it possible to use such mixtures in diesel engines without changes in the design of the power supply system and regulation of fuel equipment, which characterizes soybean oil as a promising additive to diesel fuels to improve their technical and operational performance.

Concept of Carbide Compaction of Mixed Uranium-Plutonium Fuel

Concept of Carbide Compaction of Mixed Uranium-Plutonium Fuel

Research, test and evaluate fireproof materials for mixed solid fuels operating reliably in the temperature range -50÷50oC

This article presents experiment results on the manufacture of the flame retardant sheath for the based-rubber solid fuel bar-nitrile butadiene rubber NBR26. The flame retardant sheath is specified by high mechanical strength (tensile strength 19.2 MPa), good solvent resistance (swelling capacity in toluene 19.5%), good heat and cold resistance ensuring the working capability of the mixed solid fuel bar in the temperature range (-50÷50oC). The product’s calorific effect is high (over 3000oC) during the period of up to 12 s according to the design document. The results of this experiment play an important role in the development of the rocket industry in general and the mixed rocket solid fuel industry in particular in Vietnam in the next period.

Можливості підвищення екологічної безпеки транспортних засобів з дизелями застосуванням альтернативних палив

Today, most motor fuels are made from non-renewable sources of petroleum origin. In connection with the environmental problems associated with the use of traditional motor fuels in motor vehicle engines, many countries are implementing strict requirements for the greening of motor vehicles.At the same time, vehicles with diesel engines are quite attractive in terms of consumption of alternative motor fuels. One of the ways to increase the environmental safety of vehicles with diesel engines is the complete or partial replacement of diesel fuel with alternative fuels. In this regard, research and development in the field of energy resource use in road transport has been significantly intensified, and new programs are being developed to expand the use of alternative fuels. The main focus of the researchers on improving environmental safety is the complete or partial replacement of diesel fuel with alternative fuels, which can be of petroleum or non-petroleum origin. Such fuels can be: liquefied petroleum gas, compressed natural gas and associated gases, diesel biofuel, alcohols and ethers, as well as hydrogen, etc.The article examines the problem of alternative types of fuel and the use of new energy sources in the search for more ecologically clean, cheap and less scarce fuel. To solve this problem, it is necessary to perform an analysis and determine the possibilities of increasing the environmental safety of motor vehicles with diesel engines when using different alternative fuels.The analysis carried out in the work showed that the considered fuels are promising with the proper organization of the work process of motor vehicle diesel engines. However, in a number of cases, for example, when using hydrogen, alcohols, it is necessary to significantly change the design of the engine, which requires significant costs. The use of alternative, more environmentally friendly motor fuels, such as compressed natural gas, diesel biofuel of vegetable or animal origin, etc., will allow to significantly expand the fuel base of motor vehicle diesels and does not require a significant change in their design.In further research, an important task is to develop a methodology for evaluating the use of alternative fuels, which will combine a complex of functional and mathematical models to determine the energy efficiency and environmental safety of vehicles with diesel engines when using alternative fuels both in their pure form and in the form of mixed fuels.

Development of a reduced kinetic chemical mechanism of gasoline surrogate containing alcohols and pentenes

Based on the methods of DRGEP, FSSA, reaction path analysis, and sensitivity analysis, the detailed mechanisms of 1-pentene, 2-pentene, and 2-methyl-2-butene are comprehensively reduced and combined with the mechanisms of TRF, methanol, ethanol, and n-butanol. A reduced mechanism of multi-component is proposed to predict gasoline combustion in the engine. It is rare in previous study about mechanisms of surrogate fuels that used pentene to represent unsaturated hydrocarbons, which is the most abundant olefin in actual gasoline in China. JSR experiments were carried out on the mixed fuels of isooctane/methanol/n-butanol and isooctane/1-pentene with different equivalence ratios under the condition of 1.03 atm and temperature range from 500 K∼1000 K, and the component concentration curves were obtained. The accuracy of the multi-component reduced mechanism is verified by JSR experimental data. The results showed that this mechanism could well fit the concentration curve of reactants and final reaction products, and showed the same change trend for intermediate products. The accuracy of the pentene mechanism is verified by the experimental data of ignition delay time and laminar flame velocity. The prediction of the ignition delay time of pentenes is accurate in the middle and high temperature regions, and the prediction in the low temperature region is slightly lower than that of the detailed mechanism, but it can predict the trend of ignition delay time and reflect the low temperature reaction properties of them. The simulated values of 1-pentene can well fit the experimental data of laminar flame velocity under various working conditions, and the difference in laminar flame velocity of three isomerides is also well reflected in this mechanism. The ignition delay time of multi-component mixtures was verified under different pressures by using the mixed fuels of G-A, G-B, and G-C. The results show that this mechanism can predict the ignition delay time of G-A and G-B more accurately under pressure of 20 atm, but the predicted values are lower under 50 atm pressure. Under the pressure of 10 atm, 30 atm, and 50 atm, the ignition delay time of this mechanism can well fit the experimental data of G-C fuel, while the predicted value at low temperature is slightly higher.

A Review of Research on Emission Characteristics of Ethanol-Diesel Blends in Diesel Engines

This paper reviews research on the emission characteristics of blended ethanol and other fuels. With the rapid development of modern industry, the extensive use of fuel engines has led to increasingly prominent contradictions between energy and the environment. In order to respond to sustainable development and reduce engine emissions in various countries, many scientific research institutions have conducted research on mixed fuels. The research of blended fuel mainly focuses on its sustainability, economy and environmental protection. Compared with gasoline engines, diesel engines have a lower fuel consumption rate and are widely used in heavy industry. But its fuel comes from refining crude oil, which is non-renewable and has poor cleanliness. As an emerging renewable fuel, ethanol is a fuel with good development prospects due to its good cleanliness, wide range of sources and renewable. If ethanol can be used as an alternative fuel for traditional internal combustion engines and diesel engines, it can save some traditional fuels and improve the emission problems of internal combustion engines to a certain extent. This paper introduces the research status of ethanol blended fuels, and the emission characteristics of engines (NOx, HC and CO) under different ethanol ratios and different operating conditions. It can be seen that with the increase of ethanol blending ratio, NOx content will increase, while CO and HC emissions will decrease.

Characteristics of Co-firing Solid Recovered Fuel with sub-bituminous Coal on Pulverized Coal Boiler Power Plant 300 MWe

The biomass co-firing test was conducted at a pulverized coal power plant with a capacity of 300 MWe to determine the effect of cofiring on the operating parameters, such as Mill Outlet Temperature (MOT), Furnace Exit Gas Temperature (FEGT), Specific Fuel Consumption (SFC) and environment. Biomass Solid Recovered Fuel (SRF) and coal was mixed in a stockpile with a composition of 5 % SRF and 95 % coal. Fuel mix was fed into the four operating bunker mills. The load stabilization process duration is 1 h after the biomass is fed to the boiler by keeping the loading constant at the maximum capacity rate. The data was recorded for 2 h with a retrieval interval of every 15 min. The results showed that the FEGT value during co-firing was 0.7 % lower than during coal firing. The mill outlet temperature ranges from 58 °C to 60 °C in both test conditions. NOx emissions increase by 10.1 %, and SO2 emissions increase by 5.5 % during co-firing than coal-firing conditions. There is no significant change in SFC where the value equals 0.54 kg kWh-1 on both tests.

Analysis of the Best Fuel Mix for Shipping during the Zero Carbon Transition

Analysis of the Best Fuel Mix for Shipping during the Zero Carbon Transition

Effect of MWCNTs nano-additive on a dual-fuel engine characteristics utilizing dairy scum oil methyl ester and producer gas

Alternative fuels are renewable sustainable and address socio-economic and environmental concerns. In this circumstance, this work is conducted in two stages. The first stage of the work involves, the preparation of nanoparticle (NP) blended fuels by adding 20, 40 and 60 ppm of multi-walled carbon nanotube (MWCNT) particles in dairy scum oil methyl ester (DiSOME) biodiesel using a mechanical homogenizer and ultrasonicator. Then, the steadiness characteristics of nanoparticle–mixed biodiesel fuels were studied under static state. In the next stage of the work, the effect of nanofluids on the attributes of combustion and emissions of aengine with 1-cylinder 4-stroke DI-direct injection),CI-compression ignition)which is run on DF-dual-fuel mode using DiSOME and PG-producer gas, has been examined. Investigation results indicated that at 80% load, DiSOME-PG combustion with 40 ppm of MWCNT nanoparticles provided 5.7% increased BTE, 23.5% decreased smoke opacity, 21.8% decreased HC, 22.4% decreased CO and 20.1% amplified NOx emissions related to the same fuel mixer but not with NPs. Adding NPs increased HRR - heat release rate and CP - cylinder pressure.

Design and Development of a Low-Cost Fuel Consumption Meter for the Performance Testing of Agricultural Machinery

The fuel consumption of an engine is an essential parameter that needs to be measured during the testing of an agricultural machinery. Commercially available fuel meters are expensive. The purpose of the study is to develop a fuel meter with data logging capabilities using inexpensive materials. The developed fuel meter follows the gravimetric principle in which the initial and final weights of the fuel after a specified amount time has elapsed are obtained and used to calculate the fuel consumption. The main components were the Arduino UNO microcontroller, data logging shield, and a load cell sensor. It was calibrated for diesel and gasoline fuels during the actual testing of different agricultural machinery such as centrifugal pumps, small engines, two-wheel tractors, and four-wheel tractors. Data were compared to the existing fuel meter and calibration curves were generated. Separate tanks were used for both the gasoline and diesel fuel to avoid mixing of fuels and damaging the engine. The generated equations for diesel fuel (y = 1.0957x – 0.0962) and for gasoline fuel (y = 0.8551x – 0.0017) were implemented in the Arduino code. A paired T-test was conducted and it showed that at a 5% level of significance, there is no significant variation in the data before calibration (p= 0.054) and after calibration (p= 0.550) for diesel fuel. While at a 5% level of significance, there is a significant variation in the data before calibration (p=1.03e-8 ) for gasoline fuel but showed no significant variation after calibration (p=0.610). In comparison to the existing fuel meter (Ono Sokki FX-1100 Series), the percent difference obtained before calibration ranges from 1.05% to 27.12%, and after calibration ranges from 0% to 6.39% for diesel fuel. The percent difference obtained before calibration ranges from 10.18% to 19.96% and 2.03% to 9.40% after calibration for gasoline fuel in comparison to the volumetric method fuel meter of AMTEC. After performing calibration and statistical analysis, the developed fuel meter can be considered as good as the existing fuel meters of AMTEC. The researchers recommend to provide dampers to isolate the vibration that affects weight measurement during testing or use a different sensor like an inline flow sensor to eliminate this problem. The inline flow sensor also allows the design of the fuel meter to be simpler and it will be easier to transport and use during field testing of agricultural machinery. An inline flow sensor with a wide range of capacity would be applicable for testing of agricultural machinery

Using Simulation Modelling for Designing Optimal Strategies of Fuel Mix to Comply for SOx and NOx Emission Standards in Industrial Boilers

SOx and NOx emissions originating from the combustion of fuels during the operation of industrial boilers are one of the primary contributors to regional and local air pollution, which have major effects on human well-being and ecosystems. As governmental bodies attempt to regulate and enforce emission norms, the industries operating the boilers are presented with an opportunity to optimise their fuel mix configurations to achieve a reduction in SOx, NOx, and CO2 emissions while ensuring the financial sustainability of plant operations. In this study, a System Dynamic simulation model is constructed from the perspective of an individual plant to facilitate the analysis of SOx, NOx, and CO2 emissions and the expenditure incurred through energy use and pollution control systems under different fuel-mix configurations, market conditions, and policy scenarios. The model facilitates the identification of alternative fuel-mix configurations to replace existing single-fuel firing systems while also reducing both emissions and expenditure. To demonstrate the model, exemplar data based on prevalent market and policy conditions in India are used to identify alternative fuel-mixes for typical 40TPH boiler. The experiments additionally highlight the significance of having an appropriate penalty or tax on emissions to foster compliance with emission norms in the industry without adversely impacting their financial sustainability.

Effects of water hyacinth and anthracite co-combustion under different conditions on SO2 and NOX emission

The flue gas emissions from co-combustion of anthracite powder and water hyacinth were characterized. The effects of combustion temperature, mixing ratio, and oxygen concentration on SO2 and NOx emissions were studied. On this basis, the response surface test was designed. When the ratio of water hyacinth in the mixed fuels was higher, the SO2 and NOx emissions were minimized at the mixing ratios of 5/5 and 8/2 respectively. Among all tested combustion temperatures, the total emission of SO2 and NOx were maximized at 900 °C. Among all tested oxygen concentrations, the total emission of SO2 and NOx maximized at the oxygen concentration of 50%. The influence factors on SO2 and NOx emissions rank as oxygen concentration > mixing ratio > temperature.

Effects of aluminum powder additives on deflagration and detonation performance of JP-10/DEE mixed fuel under weak and strong ignition conditions

As a high-density hydrocarbon fuel with good comprehensive properties, JP-10 is widely used in scramjets and detonation engines. Previous work has improved the ignition susceptibility and reduced incomplete combustion product concentration of JP-10 liquid fuel by blending diethyl ether (DEE). However, the density and bulk calorific value of hydrocarbons do not increase indefinitely with the increase of the ring structure, and the low temperature properties of the fuel gradually deteriorate with the increase of density. Therefore, adding metal dust with higher combustion calorific value to improve the energy density of mixed fuel is a new solution. In the present work, the deflagration and detonation properties of multiphase mixed fuels obtained by adding three aluminum powders with different morphologies and particle sizes (flake aluminum powder, small spherical aluminum powder, large spherical aluminum powder) to the JP-10/DEE mixed fuel were investigated. Under weak ignition conditions, the addition of aluminum powder increases the average burning rate of the multiphase mixed fuel and flame intensity significantly. The increase rate of the flame intensity when spherical powders are added is lower than that of the flake aluminum powder. The addition of aluminum powder is conducive to the early acceleration of deflagration, and the flame intensity reaches a high level earlier. Although the aluminum powder increases the energy of the reaction system, it also aggravates the incomplete combustion of JP-10/DEE in the oxygen-depleted state, and generates a large amount of soot. Under the strong ignition conditions, the DDT process of JP-10/DEE/aluminum powder can be divided into four stages: the slow propagation stage, shock wave formation stage as a result of compression wave superposition, coupling evolution stage of shock wave and flame front, and the detonation stage, respectively corresponding to four different pressure wave pattern. The strong ignition method greatly accelerates the evaporation of JP-10/DEE and the melting of the aluminum core in the initial stage, so that the multiphase mixture quickly changes from a slow propagation mode to a strong deflagration mode.