![]() Therefore, there is need of new technology to produce additional propylene to bridge the gap between supply and demand. ![]() 1 and Table 1, it can be seen that SC alone cannot satisfy the demand for propylene. From Table 1, it is expected that propylene production from steam crackers will be lower than the corresponding ethylene production as a result of the shift to ethane-based feed.Īs highlighted in Fig. In the past, propylene was produced from steam crackers via heavy liquid cracking and as a result, it was readily available however, most modern steam crackers use ethane-based feed in place of heavy liquids leading to less propylene being produced as illustrated in Table 1. Propylene production from steam crackers depends upon the operating rates of the steam cracker and the type of feedstock. ![]() With the ethylene and gasoline being the main products from SC and conventional FCC, respectively, propylene and other light olefins are obtained as byproducts from these technologies. It accounts for about 60–65 % of the world’s propylene production, with the established refinery FCC process accounting for 30 % and the remainder is produced on purpose using metathesis or propane dehydrogenation. SC is an established technology for the production of light olefins, such as ethylene and propylene.
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