TY - JOUR
T1 - Evaluation of configuration alternatives for multi-product polyester synthesis by reactive distillation
AU - Shah, M.R.
AU - Kiss, A.A.
AU - Zondervan, E.
AU - Haan, de, A.B.
PY - 2013
Y1 - 2013
N2 - Reactive distillation (RD) combines reaction and separation in an integrated setup that is able to reduce the energy use, improve productivity and selectivity, and increase the efficiency. In previous work, we showed the design, modeling and experimental validation of a RD process for synthesis of unsaturated polyesters. The results of our previous work clearly demonstrated that reactive distillation is indeed a very promising alternative for the polyesters synthesis.
This study explores the best suitable internals and various feed configurations of a reactive distillation process for unsaturated polyester synthesis. Multi-product simulations were performed to find the operational parameters for producing different grades of polyester in the same equipment. The product transition time during product changeover is determined for various configurations and product grades. The selection criteria for the best configuration are the minimum requirements of volume and energy to produce 100 ktpy polyesters.
The results of the rigorous simulations carried out in Aspen Custom Modeler shows that the best configuration has the reactive stripping section as a packed or trayed bubble column, and the reactive rectifying section as a packed column. With respect to the feed configuration, the feeding of monoesters to the RD column significantly intensifies the polyester process as compared to an anhydrous reactant fed to the column. Moreover, the product transition time in this configuration is also significantly reduced as compared to the other configurations.
AB - Reactive distillation (RD) combines reaction and separation in an integrated setup that is able to reduce the energy use, improve productivity and selectivity, and increase the efficiency. In previous work, we showed the design, modeling and experimental validation of a RD process for synthesis of unsaturated polyesters. The results of our previous work clearly demonstrated that reactive distillation is indeed a very promising alternative for the polyesters synthesis.
This study explores the best suitable internals and various feed configurations of a reactive distillation process for unsaturated polyester synthesis. Multi-product simulations were performed to find the operational parameters for producing different grades of polyester in the same equipment. The product transition time during product changeover is determined for various configurations and product grades. The selection criteria for the best configuration are the minimum requirements of volume and energy to produce 100 ktpy polyesters.
The results of the rigorous simulations carried out in Aspen Custom Modeler shows that the best configuration has the reactive stripping section as a packed or trayed bubble column, and the reactive rectifying section as a packed column. With respect to the feed configuration, the feeding of monoesters to the RD column significantly intensifies the polyester process as compared to an anhydrous reactant fed to the column. Moreover, the product transition time in this configuration is also significantly reduced as compared to the other configurations.
U2 - 10.1016/j.compchemeng.2013.01.008
DO - 10.1016/j.compchemeng.2013.01.008
M3 - Article
SN - 0098-1354
VL - 52
SP - 193
EP - 203
JO - Computers and Chemical Engineering
JF - Computers and Chemical Engineering
ER -