Combination of biodiesel-ethanol-diesel fuel blend and SCR catalyst assembly to reduce emissions from a heavy-duty diesel engine

Shi, Xun; Yu, Yunbo; He, Hong; Shuai, Shijin; Dong, Hua; Li, Rulong

doi:10.1016/s1001-0742(08)60028-5

Cited by 59 publications

(20 citation statements)

References 26 publications

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“…Figure 7 indicates that the brake-specific fuel consumption (BSFC) of all test fuels decreases with an increase in the engine load from 0.09 to 0.70 MPa with decreasing slope due to an increase in the brake thermal efficiency at higher engine loads. The results are similar to those reported in early works [15,16,25]. At each engine load, fuels having lower heating values (LHVs) require a higher fuel mass consumption rate to compensate their low-energy content for generating the same engine power.…”

Section: Engine Performance Analysissupporting

confidence: 89%

Combustion and Emissions of a Diesel Engine Fueled with Diesel-Biodiesel-Ethanol Blends and Supplemented with Intake CO2 Charge Dilution

Tse¹

2016

Developments in Combustion Technology

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This study investigated the inluence of a four-cylinder naturally aspirated directinjection diesel engine fueled with diesel-biodiesel-ethanol blended D"E) fuels tested at a steady state speed of rev/min under diferent engine loads, ethanol volume and intake carbon dioxide CO ) dilution ratios on engine performance, combustion characteristics, regulated gaseous emissions, and soot agglomerates. Overall, the experimental results indicate that D"E blends can in general improve brake thermal eiciency "TE) and reduce nitrogen oxides NO x ), carbon monoxide CO), CO , volatile organic fractions, particulate mass PM), and particulate number PN) concentrations, while brake-speciic fuel consumption "SFC) and hydrocarbon HC) might increase slightly. Compared with ultra-low-sulfur diesel, D"E blends can maintain a good tradeof relationship among PM-PN-NO x . Compared with biodiesel, the blended fuels perform beter in suppressing brake-speciic particle number emissions "SPN), leading to a reduction of ultraine and nanoparticle numbers. The combined efect of D"E blends with intake CO dilution has marginal efects on "SFC and "TE, signiicantly reducing NO x emission while slightly increasing particulate emissions. On particulate characteristics, D"E blends produce soots with curved, tortuous, and disorganized nanostructures with low soot burnout temperature and strong oxidation rate favoring PM-PN reduction.Keywords: diesel-biodiesel-ethanol, combustion characteristics, gaseous emissions, particle emissions, particle morphology © 2016 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 15DME, DMC, ethanol, or methanol have been studied by few researches as efective additives 16to be applied as coproducts in CI engines. 18. . Food, energy, and environment trilemma 19Of the alternative biofuels, the most widely investigated include biodiesel and ethanol [ ]. 20These two fuels have clear emission advantages over diesel. However, some studies have raised 21the concern of "food versus fuel" arising from plant-based biodiesel and ethanol, which might 22 be the main hurdle for commercialization [ ]. In fact, the economic consequences of these 23 biofuel expansions are mixed and there are still some issues that will inluence the actual 24 impacts on food costs that have not been accounted for. To counter the "food, energy, and 25 environment trilemma", the development of these biofuels from nonfood sources i.e., 26biodiesel from waste cooking oil, ethanol from cellulosic nonfood crops, etc.) can show great 27 promise in reducing food commodities being utilized for biofuel production [ ]. 28. . Investigation of D"E blends 29Focus of many previous researches was placed on diesel-biodiesel blends on general diesel Sulfur content %mass) < < < < Table . Properties of Euro V diesel, biodiesel, ethanol, m...

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Section: Engine Performance Analysissupporting

confidence: 89%

Combustion and Emissions of a Diesel Engine Fueled with Diesel-Biodiesel-Ethanol Blends and Supplemented with Intake CO2 Charge Dilution

Tse¹

2016

Developments in Combustion Technology

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“…Cu-ZSM5 and Pt/Al2O3. Such advantages include low activity for SO2 oxidation, relatively high thermal and hydrothermal durability (compared to Cu-ZSM5) and high selectivity to N2 (contrasting Pt-based catalysts which form considerable quantities of N2O) [7,8]. Further, addition of minute amount of H2 to the reductant leads to a significant increase in NOx reduction efficiency in presence of Ag/Al2O3 catalyst.…”

Section: Introductionmentioning

confidence: 99%

Studies on H2-Assisted Liquefied Petroleum Gas Reduction of NO over Ag/Al2O3 Catalyst

Yadav

Thakur

et al. 2017

Bull. Chem. React. Eng. Catal.

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Hydrocarbon-Selective catalytic reduction (HC-SCR) is one of the potential methods to remove NOx emissions from diesel engine, lean burn petrol engines and natural gas engines exhaust. Ag/Al2O3 is a good catalyst for HC-SCR of NOx under lean-burn conditions. Further, addition of small amount of H2 is effective for enhancing HC-SCR activity. This effect is unique to silver and to specific Ag/support combinations, namely, Ag/γ-Al2O3. Various HC reductants, such as: octane, decane, dodecane and propane, have been reported in the literatures. Only a single study on LPG as a reductant over Cu-ZSM catalyst was reported. There was no work reported on H2 assisted LPG over Ag/Al2O3 catalyst. Thus, this gap in the literature is filled with the present investigation of NO reduction over 2 wt.% Ag/Al2O3 catalyst using LPG reductant. The fresh and used catalyst was characterized by various techniques like low temperature N2-adsorption, XRD, XPS and SEM. There was practically no change in the characteristics of the fresh and used catalyst. Two different reductants of CO and LPG were compared for SCR of NO over the catalyst without and with H2-assisted. The experiments were performed in a fixed bed tubular flow reactor under the following conditions: 100mg catalyst; 0.13% NO, 2.5% LPG/CO, 1% H2, 10% O2, rest Ar; total flow rate 60 mL/min; temperature ambient 400 o C and pressure 1 atm. Around 100% conversion of NO was achieved using LPG reductant. Light off temperature of NO reduction significantly reduced by H2assisted LPG reductant. The maximum conversion of NO with CO was limited to 35.15% at temperature of 224 o C and above. Whereas, 97.79 % NO conversion was achieved at 365 o C with LPG reductant. While, the maximum conversions with H2-LPG and H2-CO reductants were 100 and 99.46% at 117 and 220 o C, respectively. Therefore, H2-LPG-SCR of NOx over 2 wt.% Ag/Al2O3 catalyst system can be used to get 100% reduction at low temperature.

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“…Hydrocarbon (HC), smoke, and particulate matter (PM) were reported to decrease when three components fuel (ethanol-biosiesel-diesel) was used to run on diesel engine (Rakopoulos et al, 2006). Emission reduction were also reported by Shi et al in their experimental works on three component fuel (alcohol-bioiesel-diesel) (Shi et al, 2005(Shi et al, , 2006(Shi et al, , 2008.…”

Section: Introductionmentioning

confidence: 76%

Experimental investigation of NOx emission on croton oil 1-butanol diesel in compression ignition (CI) engine

Lujaji¹

2013

J. Mech. Eng. Res.

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Vegetable oils as fuel have received attention in recent years due to their advantages including renewable nature and domestically produced energy resources. Achieving reduced emission is important subject, as it enhances sustainability of biofuels. General factorial experimental design and analysis of variance (ANOVA) is used to analyze how NOx emission is influenced by alcohol content in vegetable oil-diesel fuel blends. Fuel samples 20% croton oil -80% diesel (20%CRO-80%D2), 15% croton oil -5% 1-butanol -80% diesel (15%CRO-5%BU-80%D2), and 10% croton oil -10% 1-butanol -80% diesel (10%CRO-10%BU-80%D2) were investigated. Four-cylinder compression-ignition (CI) engine was run at constant speed 3000 RPM, loaded at different loading conditions: low idle as 0 to 100% load condition. The specific fuel consumption and exhaust temperature of fuel blend containing butanol was measured. It was observed that nitrogen oxides (NOx) emission decreases as percentage of butanol alcohol content increases in fuel samples.

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Combination of biodiesel-ethanol-diesel fuel blend and SCR catalyst assembly to reduce emissions from a heavy-duty diesel engine

Cited by 59 publications

References 26 publications

Combustion and Emissions of a Diesel Engine Fueled with Diesel-Biodiesel-Ethanol Blends and Supplemented with Intake CO2 Charge Dilution

Combustion and Emissions of a Diesel Engine Fueled with Diesel-Biodiesel-Ethanol Blends and Supplemented with Intake CO2 Charge Dilution

Studies on H2-Assisted Liquefied Petroleum Gas Reduction of NO over Ag/Al2O3 Catalyst

Experimental investigation of NOx emission on croton oil 1-butanol diesel in compression ignition (CI) engine

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