Cracking processes Suspensoid

Suspensoid An early catalytic cracking process in which the silica-alumina catalyst was suspended in the petroleum. First operated in Ontario in 1940. 

Suspensoid catalytic cracking a nonregenerative cracking process in which cracking stock is mixed with slurry of catalyst (usually clay) and cycle oil and passed through the coils of a heater. 

In 1934, R. K. Stratford at Jersey s Canadian affiliate (Imperial Oil Co.) discovered that the spent clay used in lube oil treating had catalytic effects. Four thermal crackers were eventually revamped to "Suspensoid Cracking" by adding 2 to 10 pounds of powder/barrel feed in 1940. This catalyst was used in a once through mode and improved the yield selectivities from the thermal cracking process (16). 

Once-through the Suspensoid catalytic cracking process once attracted attention. ... 

Only one once-through process (Fig. 21-ld), the Suspensoid process, has been applied commercially. The catalyst (spent lubricating-oil clay) passes through the cracking furnace along with the oil and is removed from the fuel oil by an Oliver precoat filter. ... 

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