Application of side reactors on ETBE reactive distillation

Reactive distillation (RD) has demonstrated potential reduction in capital investment and operating costs. However, industrial RD is still limited for etherification, esterification and cumene systems. Expensive hardware requirement has reduced the benefits of the simpler RD flowsheet. Side reactors are introduced in this work to reduce the requirement of specific hardware design by shortening the reactive section of the RD column. Using the ethyl tert-butyl ether (ETBE) system as the case study, simulation results show that a shorter RD column with side reactors produced comparable performance to that of a longer RD column. This may lead to a further reduction of the cost of the column if smaller amount of the catalyst result in a decrease in the diameter or height of the column. Therefore, RD with side reactors is a promising configuration that should be investigated during the conceptual design phase.

[1]  Rajamani Krishna,et al.  Reactive Separations: More Ways to Skin a Cat , 2001 .

[2]  Juhani Aittamaa,et al.  Modelling of a side reactor configuration combining reaction and distillation , 2002 .

[3]  Moses O. Tadé,et al.  Interaction of separation and reactive stages on ETBE reactive distillation columns , 2004 .

[4]  Flora T. T. Ng,et al.  More uses for catalytic distillation , 1997 .

[5]  Johan Grievink,et al.  Optimisation of the conceptual design of reactive distillation columns , 2000 .

[6]  Andreas Beckmann,et al.  Reactive distillation : industrial applications, process design & scale-up , 2001 .

[7]  Johan Grievink,et al.  Process design and control structure screening based on economic and static controllability criteria , 2001 .

[8]  William L. Luyben,et al.  Effect of number of fractionating trays on reactive distillation performance , 2000 .

[9]  T. N. Smith,et al.  ETBE Synthesis via Reactive Distillation. 1. Steady-State Simulation and Design Aspects , 1997 .

[10]  E. H. Stitt,et al.  Reactive distillation for toluene disproportionation: a technical and economic evaluation , 2002 .

[11]  Kai Sundmacher,et al.  Multiple reactions in catalytic distillation processes for the production of the fuel oxygenates MTBE and TAME : analysis by rigorous model and experimental validation , 1999 .

[12]  Moses O. Tadé,et al.  The comparison of disturbance rejection properties of one-point control schemes for etbe reactive distillation , 2002 .

[13]  Kai Sundmacher,et al.  CLASSIFICATION OF REACTIVE DISTILLATION PROCESSES BY DIMENSIONLESS NUMBERS , 1993 .