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Desulfurization of Diesel Fuel by Extraction with [BF4]^--based Ionic Liquids 被引量:20
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作者 褚雪梅 胡玉峰 +5 位作者 李吉广 梁倩卿 刘艳升 张先明 彭效明 岳文佳 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2008年第6期881-884,共4页
The extractive removal of sulfur compounds (S-compounds) from Dongying and Liaohe diesel fuels with [BF4]^--based ionic liquids were systematically investigated. The results show that the absorption capacity of an i... The extractive removal of sulfur compounds (S-compounds) from Dongying and Liaohe diesel fuels with [BF4]^--based ionic liquids were systematically investigated. The results show that the absorption capacity of an ionic liquid for the S-compounds in diesel fuels relies on its structure and its size. In the case of the two examined diesel fuels, both elongating the cation tail length and increasing the mass ratio of ionic liquid/diesel fuel promote the desulfurization ability of the examined ionic liquids. The results also show that imidazolium-based ionic liquids display higher extraction efficiencies than pyridinium-based ionic liquids, presumably owing to the fact that the rings of the S-compounds are similar to the imidazolium head ring. With the 1 : 1 mass ratio of ionic liquid/diesel fuel, the rates of the first desulfurization of Dongying and Liaohe diesel fuels using [C8mim][BF4] amount to 29.96% and 39.76%, suggesting that [C8mim][BF4] is a promising extractant for desulfurization of these diesel fuels. 展开更多
关键词 DESULFURIZATION diesel fuel ionic liquid
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Medium-Pressure Hydro-upgrading (MHUG) Technology for Producing Clean Diesel Fuel 被引量:7
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作者 Jiang Donghong Zhang Yuying +1 位作者 Hu Zhihai Nie Hong 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2012年第1期1-7,共7页
Abstract: This article introduces the development and application of the medium-pressure hydro-upgrading (MHUG) tech- nology developed by the Research Institute of Petroleum Processing (RIPP). The MHUG technology... Abstract: This article introduces the development and application of the medium-pressure hydro-upgrading (MHUG) tech- nology developed by the Research Institute of Petroleum Processing (RIPP). The MHUG technology based on the chemistry of diesel hydro-upgrading reactions has the advantages of flexible product slate and excellent product quality that can in- crease the cetane rating of diesel fuel up to more than 15 units. The hydrotreating and hydro-upgrading catalysts associated with the MHUG technology have outstanding performance to meet the demand of MHUG technology for hydro-saturation and selective ring-opening of aromatic rings. New MHUG process flow scheme can further increase the yield and selectivity of target products. Commercial application of multiple MHUG units has revealed that the MHUG technology designated for clean diesel production features good feedstock adaptability and operating stability. 展开更多
关键词 medium-pressure hydroupgrading MHUG technology catalyst cetane number clean diesel fuel
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Preparation and emission characteristics of ethanol-diesel fuel blends 被引量:2
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作者 ZHANGRun-duo HEHong +3 位作者 SHIXiao-yan ZHANGChang-bin HEBang-quan WANGJian-xin 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2004年第5期793-796,共4页
The preparation of ethanol-diesel fuel blends and their emission characteristics were investigated. Results showed the absolute ethanol can dissolve in diesel fuel at an arbitrary ratio and a small quantity of water(0... The preparation of ethanol-diesel fuel blends and their emission characteristics were investigated. Results showed the absolute ethanol can dissolve in diesel fuel at an arbitrary ratio and a small quantity of water(0.2%) addition can lead to the phase separation of blends. An organic additive was synthesized and it can develop the ability of resistance to water and maintain the stability of ethanol-diesel-trace amounts of water system. The emission characteristics of 10%, 20%, and 30% ethanol-diesel fuel blends, with or without additives, were compared with those of diesel fuel in a direct injection(DI) diesel engine. The experimental results indicated that the blend of ethanol with diesel fuel significantly reduced the concentrations of smoke, hydrocarbon(HC), and carbon monoxide(CO) in exhaust gas. Using 20% ethanol-diesel fuel blend with the additive of 2% of the total volume, the optimum mixing ratio was achieved, at which the bench diesel engine testing showed a significant decrease in exhaust gas. Bosch smoke number was reduced by 55%, HC emission by 70%, and CO emission by 45%, at 13 kW/1540 r/min. However, ethanol-diesel fuel blends produced a few ppm acetaldehydes and more ethanol in exhaust gas. 展开更多
关键词 ethanol-diesel fuel blends PREPARATION EMISSION ACETALDEHYDE ETHANOL
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Study on Separating Naphthenic Acids from Diesel Fuel by Microwave Irradiation 被引量:1
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作者 Kong Lingzhao Zhang Zhenhua +1 位作者 Li Ping Zhao Shanlin (College of Petrochemical Technology, Liaoning University of Petroleum & Chemical Technology , Liaoning Fushun 113001) 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2004年第3期45-50,共6页
The microwave technology was introduced to separate naphthenic acids from diesel fuel. Thedecrease of zeta-potential of electric double layer on the W/O interface and the reduction of diesel fuelviscosity were respons... The microwave technology was introduced to separate naphthenic acids from diesel fuel. Thedecrease of zeta-potential of electric double layer on the W/O interface and the reduction of diesel fuelviscosity were responsible for the accelerated separation of naphthenic acids under microwave irradiation.The influences of dosage of alkali compound solvent (Mp/MT), irradiation pressure, irradiation time,irradiation power, the settling time and oil phase-to-solvent phase volume ratio (O/S) had been investigated.The optimum process conditions for the refining process were determined. The removal of naphthenicacids reached 98.4% when the optimum conditions were proposed as follows: Mp/MT=1.5, 0.05MPa, 6 min,375W, 25min and O/S=10, respectively. The diesel recovery could reach 99.3% and the quality of thetreated diesel oil was good enough to meet the specification of GB252-2000. 展开更多
关键词 microwave irradiation diesel fuel oil naphthenic acid
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Effects of Far-Infrared Composite Materials Doped with Rare Earth on Physicochemical Properties of Diesel Fuel
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作者 王丽娟 许刚科 +2 位作者 孟军平 梁金生 梁广川 《Journal of Rare Earths》 SCIE EI CAS CSCD 2005年第S1期178-181,共4页
The rare earth, far-infrared natural mineral and clay were compounded to prepare the far-infrared composite materials. The effects of the far-infrared composite materials on the physicochemical properties of diesel fu... The rare earth, far-infrared natural mineral and clay were compounded to prepare the far-infrared composite materials. The effects of the far-infrared composite materials on the physicochemical properties of diesel fuel were studied. It shows that the composite materials can radiate higher intensity of far infrared; and the surface tension, viscosity and flash point decrease when the diesel fuel is dealt with the composite materials containing rare earth elements; and then the available effect mechanisms of the composite materials on the properties of diesel fuel were investigated by testing the activity changes of arene. 展开更多
关键词 composite materials far infrared diesel fuel physicochemical property MINERAL rare earths
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Miscibility of Ethanol in Diesel Fuels
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作者 ShiQuan GuWenying XuChunming PengBo 《Petroleum Science》 SCIE CAS CSCD 2005年第1期15-18,共4页
The primary barrier to the use of ethanol in diesel fuel is the poor miscibility at lower temperatures. The miscibilities of ethanol in 19 diesel fuels having a wide variation in compositions were evaluated by testin... The primary barrier to the use of ethanol in diesel fuel is the poor miscibility at lower temperatures. The miscibilities of ethanol in 19 diesel fuels having a wide variation in compositions were evaluated by testing their phase separation temperatures. The result shows that aromatic contents and intermediate distillate temperatures have a significant impact on miscibility limits. The FCC diesels, which contain up to 50% of aromatics, exhibit different phase behavior trends in comparison with straight-run diesels and other diesel fuels. 展开更多
关键词 ETHANOL diesel fuel MISCIBILITY
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Study on Dibehenyl Fumarate-Vinyl Acetate Copolymer for Lowering Cold Filter Plugging Point of Diesel Fuel
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作者 Du Tao Wang Shujun +1 位作者 Liu Hongyan Zhang Ying 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2010年第4期52-56,共5页
In the practice of petroleum industry, adding cold flow improver (CFI) to lower the fuel's cold filter plugging point (CFPP) is an effective and economic way for improving the cold flow performance of diesel fuel... In the practice of petroleum industry, adding cold flow improver (CFI) to lower the fuel's cold filter plugging point (CFPP) is an effective and economic way for improving the cold flow performance of diesel fuel. This paper described the synthesis and evaluation of the performance of dibehenyl fumarate-vinyl acetate (FV) copolymer for improving the cold flow performance of the tested diesel fuels. The carbon distribution in n-alkanes of the tested diesel samples were analyzed by gas phase chromatography. The structure of the copolymer was confirmed by the 1H NMR spectroscopy. The wax crystals morphologies with and without adding the FV additive were investigated by means of polarizing microscope. The test results indicated that the FV additive could depress CFPP of the tested diesel samples by 2℃ and 4℃, respectively, when dosage of the additive was 0.08 m%. The additive can modify the size and shape of the wax crystals and inhibit the formation of larger wax crystal lattices. 展开更多
关键词 diesel fuel cold flow improver cold filter plugging point COPOLYMER wax crystal
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Study on Application of Pour Point Depressant for Diesel Fuel
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作者 Zhang Baoji 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2008年第2期19-22,共4页
Taking into account the actual crude slate processed at the refinery, it is necessary to make reasonable combination and blending of crude oils. In order to cope with high wax content in diesel fuel it is proposed to ... Taking into account the actual crude slate processed at the refinery, it is necessary to make reasonable combination and blending of crude oils. In order to cope with high wax content in diesel fuel it is proposed to appropriately regulate the refining process scheme and add additives to refined products. This measure after being applied in the production practice has brought about good results and has met the needs of commercial production. 展开更多
关键词 pour point depressant for diesel fuel high-wax diesel BLENDING commercial application
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Application of Microwave Technology for Desulfurization of Diesel Fuel
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作者 LiPing ZhaoShanlin +2 位作者 KongLingzhao LiJiandong ZhaiYuchun 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2004年第3期51-55,共5页
The microwave technology was introduced for the desulfurization of diesel fuel. The atmosphericsecond side-cut diesel fraction, which was supplied by Liaohe Petrochemical Company, was desulfurized by anoxidation proce... The microwave technology was introduced for the desulfurization of diesel fuel. The atmosphericsecond side-cut diesel fraction, which was supplied by Liaohe Petrochemical Company, was desulfurized by anoxidation process under microwave irradiation. Hydrogen peroxide (H2O2), can oxidize the sulfur compounds indiesel fuel selectively and convert them into sulfones. Based on the rule of dissolution by similar substances,these sulfones are removed from diesel fuel because they could be dissolved in solvent phase. So the sulfurcontent of diesel fuel is decreased. The influence of the concentration of oxidizing reagent, solvent phase to oilphase volume ratio (S/O), irradiation pressure, irradiation time, and the irradiation power have been investigated.The optimum conditions for the refining process was determined. The sulfur removal rate was 59.7% under theoptimum conditions of 8%H2O2, S/O=0.25, 0.05MPa, 6 min, and 375W, respectively. When no microwave irradia-tion was applied, the removal rate was 11.5% only. 展开更多
关键词 DESULFURIZATION MICROWAVE diesel fuel
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Determination of the Effects of Safflower Biodiesel and Its Blends with Diesel Fuel on Lubricating Oil in a Single Cylinder Diesel Engine
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作者 Abdullah Engin Ozcelik Huseyin Ogut 《Journal of Environmental Science and Engineering(A)》 2012年第12期1338-1345,共8页
In the present study, safflower biodiesel (safflower oil methyl ester) was produced through transesterification. Biodiesel fuel obtained from safflower was blended with diesel fuel in ratios of 2% (B2) and 20% (... In the present study, safflower biodiesel (safflower oil methyl ester) was produced through transesterification. Biodiesel fuel obtained from safflower was blended with diesel fuel in ratios of 2% (B2) and 20% (B20). Kinematic viscosity, density, water content, heating value, flash point, clouding point, pour point, ash content, copper strip corrosion and CFPP (cold filter plug point) tests were performed on B2, B20, B100 fuel blends and diesel fuel. A four stroke, single cylinder, water cooled diesel engine with a direct injection fuel system was operated with B2, B20, B100 and diesel fuels at partial load for 100 hours and samples were taken from the engine lubricating oil at certain hours. The wear elements iron, aluminum, lead, copper and chromium contents of the samples taken from the engine lubricating oil were examined. 展开更多
关键词 SAFFLOWER BIOdiesel diesel fuel lubricating oil WEAR
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Economic Analysis of Diesel Fuel Subsidy Policy in China's Fishery
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作者 Jiahua LE Cong LIU Weijiang WANG 《Asian Agricultural Research》 2017年第1期19-21,27,共4页
In this paper,on the basis of an overview of the evolution of diesel fuel subsidy policy in China's fishery,we perform an economic analysis of the existing diesel fuel subsidy policy,and believe that it is fishing... In this paper,on the basis of an overview of the evolution of diesel fuel subsidy policy in China's fishery,we perform an economic analysis of the existing diesel fuel subsidy policy,and believe that it is fishing shareholders rather than fishermen who benefit most from the diesel fuel subsidy policy. The diesel fuel subsidy policy is not conducive to fishery resources protection,it will cause no fluctuation in the supply price of aquatic products,and it can not effectively increase the income of all fishermen. It is necessary to focus on subsidy method,subsidy links and subsidy level to improve diesel fuel subsidy efficiency,lower production costs,stabilize fishery production,and increase the income of fishermen. 展开更多
关键词 China’s fishery policy diesel fuel subsidies Economic analysis
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Experimental Investigation of Upgraded Diesel Fuel with Copper Oxide Nanoparticles on Performance and Emissions Characteristics of Diesel Engine
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作者 Sherry Khulief Tarek M. Aboul-Fotouh 《Journal of Energy and Power Engineering》 2017年第8期541-552,共12页
The enhancement of the physicochemical characteristics of fossil fuel has been the subject of extensive research to achieve better efficiency and reduced emissions. Diesel is one of the fossil fuels that are highly co... The enhancement of the physicochemical characteristics of fossil fuel has been the subject of extensive research to achieve better efficiency and reduced emissions. Diesel is one of the fossil fuels that are highly consumed in daily life. This paper focuses on the behavior of a refined diesel fuel when copper oxide nanoparticles are added. The resulting blend ofnano-diesel has been analyzed using a four-stroke engine under two loads indicating light vehicles and heavy duty vehicles. The nano-diesel was prepared by the aid of an ultrasonicator and a mechanical homogenizer. A base diesel was taken as a reference to distinguish the effect of the nanoparticles additives. Three different samples with different concentrations are utilized in this study. As a result, the fuel consumption, exhaust temperature, brake power, power losses and engine efficiency have been evaluated and compared to the base diesel in order to demonstrate and access the enhanced performance of the nano-fuel blend. The three concentrations conducted were 100 ppm, 200 ppm and 300 ppm of copper oxide nanoparticles. The results represented that the pure refinery diesel has low exhaust temperatures, high brake power and high efficiency as compared to the commercial diesel supplied from a gas station. In addition, 300 ppm copper oxide nano-diesel showed improvement in engine performances as compared to the other concentrations and pure diesel. In this context, lowest fuel consumption for both passenger cars and heavy duty vehicles was achieved, brake power for passenger cars only was improved and input power showed improvement however, exhaust temperature was the highest as for this fuel. 展开更多
关键词 diesel fuel copper oxide nanoparticles BIO-diesel additives.
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Combination of biodiesel-ethanol-diesel fuel blend and SCR catalyst assembly to reduce emissions from a heavy-duty diesel engine 被引量:6
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作者 SHI Xiaoyan YU Yunbo +3 位作者 HE Hong SHUAI Shijin DONG Hongyi LI Rulong 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2008年第2期177-182,共6页
In this study, the efforts to reduce NOx and particulate matter (PM) emissions from a diesel engine using both ethanol-selective catalytic reduction (SCR) of NOx over an Ag/Al2O3 catalyst and a biodiesel-ethanol-d... In this study, the efforts to reduce NOx and particulate matter (PM) emissions from a diesel engine using both ethanol-selective catalytic reduction (SCR) of NOx over an Ag/Al2O3 catalyst and a biodiesel-ethanol-diesel fuel blend (BE-diesel) on an engine bench test are discussed. Compared with diesel fuel, use of BE-diesel increased PM emissions by 14% due to the increase in the soluble organic fraction (SOF) of PM, but it greatly reduced the Bosch smoke number by 60%-80% according to the results from 13-mode test of European Stationary Cycle (ESC) test. The SCR catalyst was effective in NOx reduction by ethanol, and the NOx conversion was approximately 73%. Total hydrocarbons (THC) and CO emissions increased significantly during the SCR of NOx process. Two diesel oxidation catalyst (DOC) assemblies were used after Ag/Al2O3 converter to remove CO and HC. Different oxidation catalyst showed opposite effect on PM emission. The PM composition analysis revealed that the net effect of oxidation catalyst on total PM was an integrative effect on SOF reduction and sulfate formation of PM. The engine bench test results indicated that the combination of BE-diesel and a SCR catalyst assembly could provide benefits for NOx and PM emissions control even without using diesel particle filters (DPFs). 展开更多
关键词 diesel engine biomass fuel selective catalytic reduction NOx particulate matter (PM)
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Effect of Emulsified Diesel Fuel on Performance and Emissions Characteristics
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作者 Cyizere Confidence Eng Hiram Ndiritu Benson Gathitu 《Energy and Power Engineering》 2019年第9期333-341,共9页
Diesel fuel has been known as the most effective fuel but it is known as a fuel which produces harmful emissions. Later, emulsified diesel fuel was introduced as a better solution but there is no sufficient research d... Diesel fuel has been known as the most effective fuel but it is known as a fuel which produces harmful emissions. Later, emulsified diesel fuel was introduced as a better solution but there is no sufficient research data concerning combustion of emulsified fuel. The present work carried out a simulation of non-surfactant emulsified diesel fuel where composition of water in emulsion varied from 0% to 20% to determine the ratio of water to diesel which is more effective in reducing the exhaust emissions especially NOx. For this simulation,5% of water in diesel without surfactant was able to reduce NOx?up to 35%. It was shown that as the percentage of water increases, the power from that fuel combustion reduces. 展开更多
关键词 EMULSIFIED diesel fuel SURFACTANT Water Content diesel fuel Mi-cro-Explosion Emissions Power
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Renewable Diesel Fuel from Processing of Vegetable Oil in Hydrotreatment Units: Theoretical Compliance with European Directive 2009/28/EC and Ongoing Projects in Spain
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作者 Daniel Garraín Israel Herrera +2 位作者 Carmen Lago Yolanda Lechón Rosa Sáez 《Smart Grid and Renewable Energy》 2010年第2期70-73,共4页
Oil hydrotreating units in refineries are aimed at reducing the sulfur content of fuels to accomplish standard par-ticular specifications. However, this process is currently one of the best available technologies to p... Oil hydrotreating units in refineries are aimed at reducing the sulfur content of fuels to accomplish standard par-ticular specifications. However, this process is currently one of the best available technologies to produce biofuels from vegetable oil in a refinery. Vegetable oils can be processed or co-processed in these units if several adaptations are performed, so some properties could be improved in comparison with conventional fuel such as density and cetane number. This study highlights the theoretical greenhouse gases (GHG) emissions (using a life cycle assessment–LCA-approach) of a hydrotreated vegetable oil (HVO) from bibliographical data. Results were compared with other biofuel production processes, such as those obtained by transesterification of vegetable oil (FAME, fatty acid methyl ester). It has also been included the comparison with conventional fossil diesel as a benchmark in order to assess the theoretical compliance with GHG savings proposed in European Directive 2009/28/EC. Finally, ongoing projects and future perspectives in Spain are mentioned. 展开更多
关键词 Hydrotreated VEGETABLE Oil FATTY Acid Methyl ESTER GHG Emissions SAVINGS Directive 2009/28/EC RENEWABLE diesel fuel
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Past, Present and Future: A Role for Liquid Biofuels in Transitioning to Net Zero?
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作者 David Michael Mousdale 《Natural Resources》 2024年第5期107-124,共18页
Over the last decade, the uptake rate of first-generation biofuels (ethanol and biodiesel) has decelerated as low blend limits have increased only slowly and extreme volatility in oil prices has limited investment in ... Over the last decade, the uptake rate of first-generation biofuels (ethanol and biodiesel) has decelerated as low blend limits have increased only slowly and extreme volatility in oil prices has limited investment in biofuels production infrastructure. Concerns over the environmental impacts of large-scale biofuels production combined with tariff barriers have greatly restricted the global trade in biofuels. First-generation biofuels produced either by fermentation of sugars from maize or sugarcane (ethanol) or transesterification of triglycerides (biodiesel) presently contribute less than 4% of terrestrial transportation fuel demand and techno-economic modelling foresees this only slowly increasing by 2035. With internal combustion and diesel engines widely anticipated as being phased out in favour of electric power for motor vehicles, a much-reduced market demand for biofuels is likely if global demand for all liquid fuels declines by 2050. However, second-generation, thermochemically produced and biomass-derived fuels (renewable diesel, marine oils and sustainable aviation fuel) have much higher blend limits;combined with policies to decarbonise the aviation and marine industries, major new markets for these products in terrestrial, marine and aviation sectors may emerge in the second half of the 21st century. 展开更多
关键词 Biofuels ETHANOL BIOdiesel Renewable diesel Sustainable Aviation fuel Biomass
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Diesel and Jet Fuels from Bitumen-derived Middle Distillates 被引量:5
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作者 SokYui 《Petroleum Science》 SCIE CAS CSCD 2004年第1期75-82,共8页
Narrow fractions of light gas oils obtained from various upgrading processes of Athabasca oilsands bitumen were investigated as diesel and jet fuels. The relationship among the boiling range, cetane number, smoke poin... Narrow fractions of light gas oils obtained from various upgrading processes of Athabasca oilsands bitumen were investigated as diesel and jet fuels. The relationship among the boiling range, cetane number, smoke point, and other properties such as aromatics content, aniline point, and the sulfur and nitrogen content was also studied. The study reveals that when appropriate processes and distillation boiling ranges are selected, oilsands bitumen can produce diesel and jet fuels that meet stringent environmental regulations and future product specifications. New correlations to predict CN and smoke point were developed as a function of density, boiling ranges by simulated distillation, and mono- and total aromatics by supercritical fluid chromatography. The correlations apply to bitumen-derived middle distillates that have a wide range of boiling points. 展开更多
关键词 Cetane number diesel fuel jet fuel oilsands bitumen smoke point
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Deep extractive desulfurization of diesel fuels by FeCl_3/ionic liquids 被引量:4
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作者 Li-Li Ban Ping Liu +1 位作者 Cun-Hua Ma Bin Dai 《Chinese Chemical Letters》 SCIE CAS CSCD 2013年第8期755-758,共4页
The extractive desulfurization of dibenzothiophene(DBT),benzothiophene(BT),and 4,6-dimethyldi-benzothiophene (4,6-DMDBT) in model oil was carried out using anhydrous FeCl_3 and 1-methyl-3-octylimidazolium chlori... The extractive desulfurization of dibenzothiophene(DBT),benzothiophene(BT),and 4,6-dimethyldi-benzothiophene (4,6-DMDBT) in model oil was carried out using anhydrous FeCl_3 and 1-methyl-3-octylimidazolium chloride system([Omim|Cl·2FeCl_3).This new system exhibited high extractive efficiency and the sulfur removal of DBT in model oil(V_(IL)/V_(oil)=1/20) could reach 99.4%at room temperature for 30 min,which was obviously superior to single[Omim]Cl as extractant(22.9%).When the[Omim|CI·2FeCl_3 was used,the S-removal of 4,6-DMDBT and BT could also be up to 99.3%and 96.2%, respectively.Moreover,the ionic liquid could be recycled five times without a significant decrease in extractive ability. 展开更多
关键词 Extractive desulfurization FeCl_3/[OMIM]Cl diesel fuels
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Performance, emission and combustion characteristics of DI diesel engine running on blends of honne oil/diesel fuel/kerosene/DMC
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作者 B.K.Venkanna C.Venkataramana Reddy 《International Journal of Agricultural and Biological Engineering》 SCIE EI CAS 2011年第3期48-57,共10页
Honne oil(tamanu)(H),a non-edible vegetable oil is native for northwards of Northern Marianas islands and the Ryukyu Islands in southern Japan and westward throughout Polynesia.It has remained as an untapped new possi... Honne oil(tamanu)(H),a non-edible vegetable oil is native for northwards of Northern Marianas islands and the Ryukyu Islands in southern Japan and westward throughout Polynesia.It has remained as an untapped new possible source of alternative fuel that can be used as diesel engine fuel.Literature pertaining to use of vegetable oil in diesel engine with kerosene and dimethyl carbonate(DMC)is scarce.The present research is aimed to investigate experimentally the performance,exhaust emission and combustion characteristics of a direct injection(DI)diesel engine,typically used in agricultural sector,over the entire load range,when fuelled with neat diesel(ND)and blends of diesel fuel(D)/DMC/H/kerosene(K).DMC/D/H/K blends have a potential to improve the performance and emissions and to be an alternative to ND.Experiments have been conducted when fuelled with H20(20%H+80%D),HK(20%H+40%K+40%D)and HKD5(20%H+40%K+35D+5%DMC)to HKD15 in steps of 5%DMC keeping H and K percentages constant.The emissions(CO,HC and smoke density(SD))of fuel blend HKD15 are found to be lowest,with SD dropping significantly.The NOx level is slightly higher with HKD5 to HKD15 as compared to ND.The brake thermal efficiency of HKD5 to HKD15 is same and it is higher than that of ND.There is a good trade off between NOx and SD.Peak cylinder pressure and premixed combustion phase increases as DMC content increase. 展开更多
关键词 diesel engine PERFORMANCE emissions combustion vegetable oil KEROSENE diesel fuel dimethyl carbonates
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Effect of nanocomposite as pour point depressant on the cold flow properties and crystallization behavior of diesel fuel
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作者 Yuan Xue Fengfei Chen +3 位作者 Bin Sun Hualin Lin Bin Dai Sheng Han 《Chinese Chemical Letters》 SCIE CAS CSCD 2022年第5期2677-2680,共4页
The high effective nano-hybrid pour point depressant(PPD)has attracted extensive attention for its po-tential application in improving the cold flow properties of diesel fuel.In this paper,the nano-hybrid PPD was prep... The high effective nano-hybrid pour point depressant(PPD)has attracted extensive attention for its po-tential application in improving the cold flow properties of diesel fuel.In this paper,the nano-hybrid PPD was prepared by melt-blending method using three different alkyl chain lengths(i.e.,tetradecyl,hexade-cyl,and octodecyl)of n-alkyl methacrylate-maleic anhydride copolymers(R 1 MC-MA,R 1=C_(14),C_(16),C_(18))and SiO_(2)nanoparticles.The effect of those nano-hybrid PPDs on the cold filter plugging point(CFPP)and solidifying point(SP)depressing of diesel fuel were studied.Results indicated that nano-hybrid PPD showed much better performance on diesel fuel.The diesel fuel treated with 0.2 wt%C_(14)MC-MA/SiO_(2)nano-hybrid PPD exhibited the best depression in CFPP and SP by 6℃ and 18℃,respectively,which higher than that of single C 14 MC-MA.Viscosity-temperature curves and polarized optical microscopy were conducted to explore the performance mechanism;and results presented that nano-hybrid PPD of C_(14)MC-MA/SiO_(2)could effectively lower the low-temperature viscosity,and modify the crystallization behavior and crystal morphology of diesel.Therefore,the cold flow properties of diesel were significantly improved. 展开更多
关键词 diesel fuel Pour point depressant NANO-HYBRID Cold flow properties Crystallization behavior
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