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- W59455232 abstract "Faced with the fast and irreversible depletion of high quality conventional crudes, petroleum refiners are forced to utilize heavier feedstocks worldwide. In Canada, the greatest proven reserves of hydrocarbons are the heavy oil and tar sand deposits of Western Canada. It has been reported that hydrotreating of heavy feedstocks prior to FCC operation generally can increase conversion yield, improve product quality and prolong catalyst life. The objectives of this study were: (a) to evaluate the effect of hydrotreating on the quality of conventional and synthetic gas oils; (b) to determine the potential FCC product yields of raw and treated gas oils in a microactivity test (MAT) unit; (c) to assess the benefits of hydrotreating-cracking combination over direct cracking. The FCC feeds derived from bitumens and heavy oils are highly aromatic and refractory, and contain more impurities than those from conventional crudes. Cracking of these materials is more difficult, resulting in inferior product quality. Also, the catalyst deteriorates faster due to poisoning by metals such as Ni, V, Cu and Fe, coke, and basic nitrogen which deactivates acid sites of the catalyst. In addition, the exhaust gas, rich in SO{sub X} and NO{sub X}, from the regenerator imposes corrosion and environmentalmore » problems. Since the FCCU is the major producer of gasoline, accounting for about 35% of the gasoline sold in North America and Europe, the trend of charging more nonconventional feedstocks to FCCU has caused general concern among refiners; thus, research is being conducted to find better ways to process these materials.« less" @default.
- W59455232 created "2016-06-24" @default.
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- W59455232 date "1987-01-01" @default.
- W59455232 modified "2023-09-27" @default.
- W59455232 title "Catalytic cracking of hydrotreated conventional and synthetic feedstocks" @default.
- W59455232 doi "https://doi.org/10.4095/302678" @default.
- W59455232 hasPublicationYear "1987" @default.
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