Samenvatting
An integrated process for the synthesis of methanol from aqueous glycerol involving reforming of the feed to syngas followed by methanol synthesis is successfully demonstrated in a continuous bench scale unit. Glycerol reforming was carried out at pressures of 24-27 MPa and temperatures of 948-998 K with a throughput of approximately 1 kg aqueous feed/h (3-10 wt.% glycerol) leading to high glycerol conversions of (95.0-99.9%) and syngas with a composition range of H-2/CO/CO2/CxHy = 44-67/1-21/16-34/2-18 vol.%. The effluent water of the process was recycled at high pressure, reducing the water consumption of the process significantly. Subsequent syngas conversion to methanol was carried out in a packed bed reactor at temperatures between 468 and 518 K and pressures between 24 and 27 MPa using a commercial methanol catalyst (Cu/ZnO/Al2O3). The maximum yield of methanol based on glycerol intake was 0.62 kg methanol/kg glycerol for an experiment with a time on stream of 16 h, which corresponds to a carbon conversion (carbon in methanol over carbon in glycerol) of 60%. This value is close to the maximum theoretical yield of 78% based on stoichiometric considerations. (C) 2012 Elsevier B.V. All rights reserved.
Originele taal-2 | English |
---|---|
Pagina's (van-tot) | 245-253 |
Aantal pagina's | 9 |
Tijdschrift | Chemical Engineering Journal |
Volume | 207 |
Nummer van het tijdschrift | 1 |
DOI's | |
Status | Published - 1-okt.-2012 |
Evenement | 22nd International Symposium on Chemical Reaction Engineering (ISCRE) - , Netherlands Duur: 2-sep.-2012 → 5-sep.-2012 |