Systematic Development of Extractive Reaction Processes

Abstract

A systematic framework for the development of extractive reaction processes is presented. It consists of four steps: synthesis of process flow sheets on the basis of reactive-phase diagrams, evaluation of process trade-offs using geometrical design methods, analysis of kinetics and mass transfer effects, and selection of reactor types for the desired performance. We demonstrate these methods for a five-component system with two reactions in parallel.

Hydrogen Peroxide Synthesis: An Outlook beyond the Anthraquinone Process

“…An extremely useful concept for combining the oxidation of AHQ and the separation of hydrogen peroxide in a single step is the recently developed reactive separation process. [54][55][56][57][58][59] This approach improves the yield of H 2 O 2 , because immediate separation of by-products avoids their participation in the reaction equilibrium. Reactive separation technology thus leads to substantial savings in capital and operation costs.…”

Design of Extractive Reaction Systems

“…1b can be reduced from a two-dimensional to a one-dimensional representation. After a transformation of the phase equilibrium concentrations, the phase equilibrium is displayed in the new diagram and a process can be designed using standard geometrical methods, e.g., the lever rule [10,11,38].…”

“…Thus, investigations lead to desired values of Da r Φ and Da II , both a function of the residence time and the latter decreasing with increasing interfacial area. The requirements for the Damköhler numbers then can be translated into guidelines for reactor design and operation, e.g., holdup or interfacial area, completing the design framework [10].…”

“…Some of these challenges also have to be solved during the design of ERS. equilibrium are discussed in the following, based on illustrations from a design framework by Samant and Ng [10].…”