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Utilization of hydrous ethanol in diesel engines is beneficial not only for reducing the exhaust pollutant emissions but also for improving the lifecycle fuel efficiency including both in engines and refineries. However, so far detailed investigations on spray combustion characteristics of hydrous ethanol diesel emulsified fuels are rarely reported, though this information is crucial in combustion...
Lifted flames of gaseous ethanol and dimethyl ether (DME) issuing into a hot co-flow are recorded with a high-speed camera. The flames of the two fuels at 433K are studied in a co-flow temperature range from 966K to 1149K and at an ambient pressure of 1atm. The experimental results show that the co-flow temperature has a substantial influence on the jet flame characteristics. It is concluded that...
Concentrations of elements from fly ash (forty-three) or leachate (fifteen) were detected, they were divided into six groups according to their changes of concentration with time. The study demonstrated that element concentration of B, Ba, Pb, Sb and Zn in monitoring wells followed different trend when time increased. Obeying some proportional relation, element concentration of B, Pb, Sb and Zn (except...
Aromatics including benzenes, olefins and naphthalenes derived from renewable biomass are of great importance on the potential substitution for diminishing fossil fuels. In this work, aromatics from biomass-derived sorbitol by hydrogenation and aromatization was investigated over the Ni/HZSM-5 and Ni/Hβ catalysts in a fixed-bed reactor. The testing results showed that all the catalysts revealed 100%...
In order to reveal the spray combustion mechanism of blend fuels, a combustion model was established using EDC model based on previous experimental research. The simulation results show that under lower co-flow temperature, the auto-ignition of n-heptane (represent diesel) occurred earlier than gasoline (represent gasoline), as a result of the combined effect of slower vaporization rate and lower...
The lift-off flame of gasoline/diesel blend fuel spray in controllable active thermo-atmosphere (CATA) was captured by a high speed camera to investigate the auto-ignition characteristics of blend fuel, meanwhile a database for further simulation work was provided. The experimental results showed that the influence of co-flow temperature on spray lift-off flame has two opposite trends: Under higher...
Pd/SiO 2 catalyst prepared by impregnation method using (NH 4 ) 2 PdCl 4 , Pd(NO 3 ) 2 and Pd(acac) 2 as precursors was used for the synthesis gas production by partial oxidation of methane (POM). Compared to the catalysts prepared from other two precursors, the catalyst prepared from Pd(acac) 2 demonstrated better activity and stability...
Ni/HZSM-5 catalysts calcined at different temperatures were used in the isoparaffin production by aqueous phase processing of sorbitol and characterized by N 2 physical adsorption, temperature-programmed reduction (H 2 -TPR), temperature-programmed desorption of ammonia (NH 3 -TPD) and Raman techniques. The effect of calcination temperature of the catalysts on the catalytic...
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