Separation and Purification Technology, Vol.132, 468-478, 2014
Heat-integrated reactive distillation process for TAME synthesis
The integration of reaction and separation in one single process unit is generally more preferable than their application individually, which allows less energy consumption and environmental impacts. This work presents a novel practicable configuration of heat-integrated process based on reactive distillation that aims to reduce furthermore the energy requirements for tert-amyl methyl ether (TAME) synthesis, leading to competitive operating costs. The optimal design flowsheet of heat-integrated with reactive distillation was obtained by minimizing the total annual cost (TAC) of this process. Simulation study was conducted to compare the heat-integrated scheme and conventional reactive distillation (CRD). The proposed technology was demonstrated to decrease the TAC which was 6.56% less than that of the CRD. The control strategy of this heat-integrated design was also developed. Only tray temperature control loop was needed to reject feed disturbances to maintain the quality of the products. Overall results demonstrate that the heat-integrated reactive distillation is a promising approach for TAME synthesis. (C) 2014 Elsevier B.V. All rights reserved.
Keywords:Reactive distillation;tert-Amyl methyl ether (TAME);Heat integrated;Process design;Dynamic simulation