Improving selectivity and yield by conducting processes in a periodic fashion
Addnl. data considered in abstracting and indexing are available from a source cited in the original document. With a square-wave feed concn. variation, with a simple homogeneous or parallel reactions, a real advantage of periodic operation with a continuous stirred tank is not possible. With a higher order reaction, the ethanolamine-ethylene oxide reaction to form di- and triethanolamine, the selectivity and the space-time yield of the intermediate is strongly dependent on the frequency and unsymmetery of the input function. With appropriate concn. function, the selectivity for the intermediate product can be 37% higher than with steady operation. The space-time yield can increase 1.5% with a 17% increase of selectivity. [on SciFinder (R)]
Keywords: Reaction (periodic operation of ; selectivity and yield in) ; reaction periodic parameter function; ethanolamine ethylene oxide reaction; diethanolamine prepn periodic function; triethanolamine prepn periodic function
Unit Operations and Processes
Farbwerke Hoechst A.-G.,Frankfurt/M.,Fed. Rep. Ger.
written in German.
102-71-6P; 111-42-2P Role: PREP (Preparation) (by ethanolamine-ethylene oxide reaction, with periodic operation); 75-21-8 Role: RCT (Reactant), RACT (Reactant or reagent) (with ethanolamine, with periodic operation); 141-43-5 Role: RCT (Reactant), RACT (Reactant or reagent) (with ethylene oxide, with periodic operation)
Record created on 2006-04-18, modified on 2016-08-08