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| - Thermal Cracking of Canola Oil: Reaction Products inthe Presence and Absence of Steam
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| - The product distribution obtained from the thermal cracking of canolaoil was studied atatmospheric pressure in a fixed-bed reactor in the temperature range300−500 °C and gas hourlyspace velocity (GHSV) in the range 3.3−640h-1 over inert materials and in the presenceandabsence of steam. Results showed that canola oil conversions werehigh (54−100 wt %) anddepended strongly on the operating variables. Products essentiallyconsisted of C4 and C5hydrocarbons, aromatic and C6+ aliphatichydrocarbons, and C2-C4 olefins, as well as adiesel-like fuel fraction and hydrogen. GC−MS analyses showed thatproduct distribution as well asthe lengths of the carbon chain of hydrocarbons and oxygenatedhydrocarbons depended stronglynot only on the cracking temperature and space velocity but also onwhether cracking wasconducted in the presence or absence of steam. On the other hand,cracking over inert materialsshowed that both conversion and product distribution were completelyindependent of morphologyof the cracking surface. A reaction scheme has been proposed toaccount for the productdistribution obtained from the thermal cracking of canola oil. Theobserved changes in bothcanola oil conversion and product distribution with changes in theoperating variables were foundto be consistent with the reaction scheme.
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