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Simulation and optimization of ethylene Glycol production

Simulation and optimization of ethylene Glycol production / Syed Hussaini Syed Sulaiman
Penghasilan etilena glikol dari syngas menggunakan hidrogenasi dimetil oksalat fasa-gas pada pemangkin berasaskan tembaga adalah salah satu teknologi penting. Pengoptimuman terhadap penukaran, selektiviti dan hasil pengeluaran berskala industri sukar dilakukan menggunakan pendekatan asas eksperimen. Oleh itu, perisian simulasi Aspen Plus Versi 10 digunakan untuk simulasi, menguji sensitiviti parameter operasi ke arah penukaran, selektiviti dan hasil pengeluaran, dan mengoptimumkan pengeluaran etilena glikol menggunakan model reaktor RPLUG dengan ciri-ciri akhir produk yang dikehendaki. Hasil simulasi yang diperoleh boleh diterima kerana kesilapan yang dikira untuk pengeluaran etilena glikol apabila dibandingkan dengan kesusasteraan hanya sekadar 9.17 %. Analisis sensitiviti yang dijalankan menunjukkan penukaran dimetil oksalat dan hasil etilena glikol adalah maksimum pada suhu reaktor, tekanan dan hidrogen kepada nisbah mole dimetil oksalat sebanyak 212 oC, 29 bar dan 46 masing-masing. Metil glikolat kepada nisbah mol dimetil oksalat tidak menunjukkan kesan yang signifikan ke atas penukaran dan hasil pengeluaran. Oleh itu, pembolehubah tersebut tidak termasuk dalam kajian pengoptimuman. Selepas pengoptimuman, penukaran maksimum dimetil oksalat, selektiviti etilena glikol dan hasil pengeluaran etilena glikol masing-masing adalah 100 %, 98 % dan 99.7 %. Tindak balas ini telah dioptimumkan pada 200 oC, 37 bar, kepekatan dimetil oksalat pada 23.6 wt. % dan hidrogen kepada nisbah mol dimetil oksalat sebanyak 64. _______________________________________________________________________________________________________ Ethylene glycol production from syngas using gas-phase hydrogenation of dimethyl oxalate on a copper-based catalyst is one of the crucial technologies. Optimization on the conversion, selectivity and yield of industrial scale production is difficult to be done using experimental base approach. Hence, Aspen Plus Version 10 simulation software is used to simulate, test the sensitivity of operating parameter towards conversion, selectivity and yield, and optimize the production of ethylene glycol using RPLUG reactor model with desired end-product characteristics. The simulation results obtained is acceptable since the error calculated for the ethylene glycol production when compared with literature is only 9.17 %. Sensitivity analysis conducted shows that the conversion of dimethyl oxalate and yield of ethylene glycol were maximum at reactor temperature, pressure and hydrogen to dimethyl oxalate mole ratio of 212 oC, 29 bar and 46 respectively. Methyl glycolate to dimethyl oxalate mole ratio do not show significant effect on the conversion and yield. Hence, the variable not included in the optimization study. After optimization, the maximum conversion of dimethyl oxalate, selectivity of ethylene glycol and yield of ethylene glycol obtained are 100 %, 98 % and 99.7 % respectively. This reaction has been optimized at 200 oC, 37 bar, 23.6 wt. % of dimethyl oxalate concentration and hydrogen to dimethyl oxalate mole ratio of 64.
Contributor(s):
Syed Hussaini Syed Sulaiman - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875007571
Language:
English
Subject Keywords:
Ethylene glycol; syngas; dimethyl oxalate
First presented to the public:
6/1/2018
Original Publication Date:
7/18/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Chemical Engineering
Citation:
Extents:
Number of Pages - 55
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-07-31 15:51:42.933
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Mohd Jasnizam Mohd Salleh

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Simulation and optimization of ethylene Glycol production1 2018-07-31 15:51:42.933