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The liquid fuel evaporation rate, especially for aviation kerosene, is important in both aero-engine combustion chamber design process and spray combustion numerical simulation modeling, while the evaporation rate in high temperature stationary and convective environment is lack of both experimental data validation and theoretical analysis studies. In this paper, firstly the common kerosene and aviation...
This study is devoted to characterizing the coal pyrolysis performance based on field effects in five fixed-bed reactors with different radiuses. The results showed that the increased reactor radius raised the coal bed thickness, thereby modifying the temperatures and extending the reaction time to reach 500°C. At a furnace temperature of 900°C, the increased coal bed thickness from 20mm to 100mm...
The so-called micro fluidized bed reaction analyzer (MFBRA) and a thermogravimetric analyzer (TGA) were adopted to comparatively investigate the non-isothermal gasification of coal char with CO2. Experimental results demonstrated that heating rate obviously affected the coal char gasification reaction. Raising heating rate evidently increased the temperatures at the initiating reaction (Ti), the maximal...
Biodiesel production from waste oil by lipase Candida sp. 99–125 assisted with cyclodextrin as additive was investigated in a solvent free system. The optimum reaction conditions was determined toward lipase dosage, agitation speed, cyclodextrin loading, water content and reuse ability of free lipase. A certain dosage of cyclodextrin showed a significant improvement of the reactions. However, the...
In order to improve leaching efficiency of vanadium pentoxide (V 2 O 5 ) from stone coal and to reduce its connected environmental pollution, this article investigated the oxidizing roasting of stone coal in a laboratory fluidized bed reactor to optimize the roasting method and conditions. The examined parameters included reaction temperature, reaction time and amount and mixing method...
This study investigated the chemical characteristics of the particulate matter emitted from a diesel engine (Diesel Particulate Matter, DPM) and the correlations between polycyclic aromatic hydrocarbons (PAHs) species as well as between PAHs and inorganic elements in DPM through dynamometer testing. There were six sets of speed–load conditions. Engine speeds varied from 1000 to 1600rpm, while engine...
Ionic liquids (ILs) were considered to be immobilized on solid supports to overcome the problems of the pure ILs in fuel desulfurization. Take Merrifield resin as solid support, four polymer-supported imidazole ionic liquids (PSILs) with different lengths of alkyl chain linkers were prepared by covalent binding and the structures were characterized by Fourier transform infrared (FTIR), elemental analysis,...
A two-phase turbulent combustion model (FSM) with the inclusion of individual droplet burning behavior was applied in a methanol air spray flame. The FSM model results were compared with the experimental data and results of the traditional two-phase turbulent combustion model (TM). The comparison of the results showed that in most regions the FSM model results were in good agreement with the experimental...
ImCl-silica gel (SG-ImCl) was prepared by directly immobilized [1-methylimidazole][Cl] (ImCl) onto silica gel (SG) using co-condensation of ionic liquid modified organosilane and tetraethoxysilane (TEOS) as silica source in strong acid condition. The properties of the samples were characterized by FTIR, elemental analysis, 29Si MAS NMR, SEM, BET. The results suggested that [1-methylimidazole][Cl]...
Thermogravimetry at constant temperature and programmed temperatures is used to study reaction kinetics and possible mechanism of COS desulfurization using ferric oxide as the main active component. The apparent reaction activation energy is smaller in hydrogen atmosphere than in nitrogen. The desulfurization reaction of COS takes place easily in a hydrogen atmosphere. At the same time, the influence...
The interfacial and thermodynamic properties of water/cetyltrimethylammonium chlorine (CTAC)/alkanol/diesel oil w/o microemulsion systems were investigated by the method of dilution. Alkanols with different carbon numbers (n-butanol, n-pentanol, iso-pentanol, n-hexanol, n-octanol) were used to investigate the effect of cosurfactant on the formation of diesel oil microemulsion. The composition of the...
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