The Recovery Process of Used Hydrocarbon Solvent by Vacuum Distillation
Conference proceedings article
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Author list: Savasdipol A., Paradee N., Niamlang S.
Publisher: IOP Publishing
Publication year: 2019
Volume number: 559
Issue number: 1
ISSN: 1757-8981
eISSN: 1757-899X
Languages: English-Great Britain (EN-GB)
Abstract
In polymer production industry, a large amount of hydrocarbon solvent (HC solvent) are used to clean the reactor. Normally, used HC solvent are managed by Incineration process at high temperature (around 700 1200ฐC) which cause a large amount of waste gas explosion such as CO2. To manage the used solvent for energy saving and global warming reason, used HC solvent should be recycled by refining process. The aliphatic hydrocarbon, EXXSOL D80, was selected as the model HC solvent in this research work. The vacuum distillation was selected as the suitable refining process. To determine the optimum refining condition, the effect of vacuum distillation pressure (13, 15, 20, 25 and 30 kPa) on % yield, purity and assessment of economic value was studied. The purity of used solvent and %carbon atom content were confirmed by gas chromatography-mass spectrometer (GC-MS). %Purity of carbon-12, 13 and 14 atom was decreased with increasing distillation pressure. The economic cost was evaluated. At The suitable condition, 170ฐC 13 kPa, the highest yield of distilled solvent was observed at 77.18%.Thus the recovery used solvent can be reduce cost for purchase and disposal around 33,651.27 USD/year. Finally, vacuum distillation is suitable for recovery used HC solvent. ฉ Published under licence by IOP Publishing Ltd.
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