Determination of Optimum Parameters in Connection with Transportation with a Gas Stream

Abstract

The specific energy consumption, and - by way of this - the expenditure of the transportation of solid, granular material with a gas stream is highly dependent on the dimensions of the transport conduit and on the working parameters. If the output of the transport system is given, the diameter of the conduit and the amount of transporting gas has to be chosen so as to obtain minimum transportation costs. This problem was solved by the introduction of intermediate variables. A method of calculation is proposed for the determination of the optimum values of the processes parameters, such as gas flow rate and volume ratio of solid. The application of the method is illustrated with the example of vertical transportation of sodium bicarbonate.