Figure 3
From: Minimising hydrogen sulphide generation during steam assisted production of heavy oil
(a) Total ion current of gas species generated by aquathermolysis of sulphur-rich heavy oil. (1) argon(from purge), (2) methane, (3) carbon dioxide, (4) ethylene, (5) ethane, (6) hydrogen sulphide, (7) water, (8) propene, (9) propane, (10) butene isomers, butane, (11) dichloromethane (DCM contamination), (12) pentane, (13) hexane, (14) benzene, alongside a comparison of selected ions (m/z = 147 + 162 + 198) from the (b) aromatic (GC-MS) and (c) asphaltene (py-GC-MS) fractions of the flotates. MDBT – methyldibenzothiophene, DDBT – dimethyldibenzothiophene. Full lists of sulphur compounds identified in the flotate and asphaltene flash pyrolysate are presented in Table S5.
