Process development for the production of dicyclopentadiene from pyrolysis gasoline (PYGAS)

Date

2023-9-11

Author

Sesli Uysal, Deniz

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

262
views

0
downloads

Cite This

Dicyclopentadiene (DCPD) is an essential intermediate utilized in various products. It is the dimer of cyclopentadiene (CPD) and potentially precious component of pyrolysis gasoline (PYGAS). This study aims to develop a process for the recovery of CPD through monomerization of DCPD and subsequent separation from other hydrocarbons in the PYGAS mixture. For this purpose, reactive distillation can be employed. DCPD can finally be produced by dimerization of highly pure CPD. The PYGAS samples from SOCAR Turkey were analyzed in GC-MS. Vapor-liquid equilibrium of DCPD in PYGAS was investigated in rotary evaporator to obtain equilibrium compositions within the temperature and pressure range of 40°C-135°C and 70-650 mbar. DCPD monomerization was examined in a single-stage reactive distillation system within the temperature range of 150°C-160°C under atmospheric pressure. The decomposition kinetics of DCPD were investigated in detail by conducting in-situ GC-MS reaction experiments at the temperature range of 80°C-350°C. The compositions obtained in experiments were compared with Aspen Plus simulations. Results show that PYGAS separation and DCPD monomerization can be modeled by using Peng Robinson Equation of State with confidence under the experimental conditions applied. The PYGAS feed composition and obtained reaction rate expression were further used to ascertain the multicomponent distillation separation sequence in Aspen Plus. In this study, a novel method for the production of DCPD with high purity (≥ 90%wt) by reactive distillation is proposed. DCPD can be retrieved from PYGAS in a single equipment, with a yield of 94%, decreasing the equipment and the operational costs compared to conventional methods.

Subject Keywords

Dicyclopentadiene, Cyclopentadiene, Pyrolysis gasoline, Reactive distillation

URI

https://hdl.handle.net/11511/105478

Collections

Graduate School of Natural and Applied Sciences, Thesis