Paper presents and comments a lot of experimental results obtained by a small ozone generator (50 gO3/h) as for: ozone generation (gO3/h); ozone concentration (gO3/m3); ozone generation Efficiency (gO3/kWh); concentrations of the nitrogen oxides: NO and NO2 (mg/Nm3), etc, function to the applied voltage, gas flow, pressure, etc, for two cases: with air and with oxygen supply. Also are presents the conditions favoring occurrence of nitrogen oxides

Many authors have investigated simultaneous reduction of SO2 and NOx from flue gas stack emissions. Because of his high costs, this technology has been applied only in few countries (Japan, China, and Poland). Small countries, consumers of cheap combustibles, produce a great deal of atmospheric pollutants: SO2 and NOx. For this reason there is a great interest for implementation of cheaper technologies, with same impact as electron beams processing

Quenching distance of ethylene/air mixture has been determined by the tube technique, at ambient initial conditions, for downward propagating flame. It has been also investigated by flanged electrode technique for a narrower range of composition (5÷10%), at atmospheric and sub-atmospheric pressures and ambient temperature. The correlated minimum ignition energy, evaluation of the overall reaction order, calculation of the Peclet numbers at quenching

The relationship correlating the minimum ignition energy and the quenching distance of different fuel-air mixtures is reanalyzed assuming that the first parameter is virtually equal to the reversible expansion work spent by the initial volume of unburnt gas to reach the critical volume of the minimal flame. The form of the obtained equation, showing a first and a third power variation of minimum ignition energy with respect to initial pressure and

The quenching distances and the minimum ignition currents for LPG/air gaseous mixtures of various fuel concentrations and total initial pressures were measured by using inductive-capacitive sparks and break sparks, respectively. From these values, minimum ignition energies for both types of sparks were calculated. In lean- and stoichiometric LPG/air mixtures ignition by break sparks requires higher energies as compared to ignition by inductive-capacitive

The decomposition reactions of 4-chlorobiphenyl (4CB) are investigated at 25 MPa and 773 K in supercritical water (SCW) in the presence of methanol and then benzene both without and with oxygen (from H2O2/H2O solutions) to understand the co-oxidation effects on PCB conversion and reaction products. The reactions of 4CB, delivered to a tubular reactor as solutions in methanol and benzene (3 g/L), are conducted isothermally under plug-flow regime,

Comprehensive studies of monochlorobiphenyl (MCB) decomposition in supercritical water in the presence of methanol and other cosolvents, both with and without oxygen, are being conducted to understand the reaction kinetics and pathways of individual PCB isomers and to determine the structure-reactivity relationships. In the present study the disappearance rate of MCBs, delivered in an isothermal plug-flow tubular reactor as methanolic solutions,

The original break spark test apparatus for intrinsically safe circuits was modified to allow the measurements of minimum ignition currents (MICs) at different initial pressures between 20 and 120 kPa. The MICs of different propylene/air mixtures at ambient temperature and at both atmospheric and sub-atmospheric pressures were measured. The corresponding minimum ignition energies (MIEs) using break sparks were calculated and compared with those derived

Many authors have investigated simultaneous reduction of SO2 and NOx from flue gas stack emission by electron beam-induced plasma process. Because of high costs, this technology has been applied in only a few countries (Japan, China and Poland) until now. Small countries, consumers of cheap combustibles, produce a great deal of atmospheric pollutants SO2 and NOx, For this reason there is a great interest in the implementation of cheaper technologies

A DSC and TGA study of linear polydicyclopentadiene (L-PDCPD) shows that the thermal behaviour of this polymer is characterized by an endothermic and two exothermic processes. In previous work it was demonstrated that the endothermic process is a glass transition and the second exotherm represents the thermo-oxidation of the polymer. In this work the first exothermic process is shown to be a possible thermal polymerization of the double bonds in