Analysis of potential singular point surface of reactive stripping processes

Abstract

Reactive stripping involves non-condensable gas phase that not only removes the condensable components from the liquid phase but also is used as educt. To analyse the feasible products of reactive stripping process, a model is presented. The potential singular point surface (PSPS) is used as a tool to analyse the feasibility of products. Reactive distillation and reactive membrane process are regarded as two limiting cases of this model with fully condensable gas phase without stripping gas and with infinite gas flow rate, respectively. The influence of the mass transfer conditions and gas flow rate on the PSPS of special and general reactive stripping processes is investigated through hypothetical ternary systems. As expected, location and shape of the PSPS can be dramatically changed at different operating conditions of the process and of the physical properties of the involved components, which is helpful for optimising the suitable parameters for the desired product.