A.S. Noskov

Effect of catalytic combustion of hydrogen on the dehydrogenation processes in a membrane reactor. I. Mathematical model of the process

Mathematical modeling of a catalytic membrane reactor was performed for thermodynamically coupled processes using as an example the endothermic dehydrogenation of propane and the exothermic combustion (oxidation) of hydrogen. Benefits of using the membrane reactor to increase the yield of target products by shifting equilibrium was demonstrated theoretically. The effect of hydrogen combustion on the main characteristics of the endothermic dehydrogenation process was studied. The hydrogen combustion reaction makes it possible to further increase the conversion of propane and compensate for the energy consumption in the endothermic dehydrogenation process.

Effect of catalytic combustion of hydrogen on dehydrogenation in a membrane reactor. II. Dehydrogenation of ethane. Verification of the mathematical model

Thermodynamically coupled dehydrogenation of ethane in a membrane reactor is studied by mathematical modeling. The dehydrogenation of ethane in a membrane reactor with additional combustion of hydrogen is shown to have an advantage over dehydrogenation in a tubular reactor. Verification of the mathematical model of the process is performed.

77 Catalytic liquid-phase oxidation by oxygen for purification of industrial wastewater

Abstract Catalytic oxidation of environmental contaminants by oxygen has been investigated in water phase at elevated temperatures and pressures. Phenol, aniline, chlorine- and nitrogen containing substances in model solutions, real wastewater of the alcohol plant (oxygen-containing compounds) and petrochemical plant (sulfurous substances) were used in our experiments. Initial concentrations of contaminants were 0.1–60 g/l, pH-6–14. In the presence of graphite-like carbons ( Sibunus designed in Boreskov Institute of Catalysis) and supported on Sibunits Ru-catalysts the most of substances are oxidized completely at T=100–250°C.

Effect of catalytic combustion of hydrogen on the dehydration processes in a membrane reactor. III. calculation of the industrial reactor

This paper describes the mathematical simulation of an industrial membrane reactor for propane dehydrogenation in the thermodynamic coupling with hydrogen combustion (oxidation). Due to the effective removal of hydrogen through a membrane and the heat release as a result of an exothermic reaction, the temperature of the reaction stream at the input could be reduced to 500◦C. The fact that the process is carried out on an industrial-level membrane reactor makes it possible to reach a propane conversion of 75% with a propylene selectivity of 97%, which exceeds the figures obtained per pass in existing industrial devices at higher temperatures.