Developing Methods for Producing Hydrophobized Platinum Catalysts of Different Types

Theoretical Foundations of Chemical Engineering - The development of a thermostable hydrophobic platinum catalyst is an important scientific and practical problem. The purpose of this work is to...     

Phase isotope exchange of water as a gas detritiation method

The phase isotope exchange of water applied to the removal of tritiated water vapor from process and exhaust gases of enterprises of the nuclear industry is considered, and its prospects are estimated theoretically and experimentally. This method has obvious advantages over the currently used adsorption method from the standpoint of the simplicity of equipment required, the amount of secondary nuclear waste, and energy consumption.     

Liquid Holdup and Axial Mixing in a Mixed Bed of Hydrophobic Catalyst and Hydrophilic Packing

Theoretical Foundations of Chemical Engineering - The dynamics of fluid motion in a mixed bed of the hydrophobic RCTU-3SM catalyst and hydrophilic SPP packing (3 × 3 × 0.2 mm) was...     

Application of the Pulse Tracer Injection Method for Estimating the Mass Transfer Efficiency at Extremely Low Irrigation Densities for the Case of Structured CY Sulzer Packing

The liquid flow pattern of the countercurrent phase water isotope exchange process used for the removal of tritiated water vapor from gases has been studied via the pulse injection of a tracer into a liquid flow. A specific feature of this process is an extremely low water irrigation density in a column. Based on the performed experiments, the liquid holdups have been calculated and the liquid flow pattern has been determined. It has been demonstrated that the standard estimation of the longitudinal mixing effect on the masstransfer characteristics of this process has a limited character and may result in incorrect conclusions at a low irrigation density on packings.     

Application of the phase isotopic exchange of water to the purification of air in industrial areas from tritium

Experimental data on the efficiency of the phase isotopic exchange of water as applied to the purification of air from tritiated water vapor are presented. It is shown that the use of an oxidized copper regular packing gives mass-transfer coefficients that are high enough to draw a conclusion regarding the prospects of this process for the detritiation of air. The simplest mathematical model of the process is considered.