Issues regarding the space velocity in the sulfuric acid method for alkylating olefins
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How is the space velocity for olefin alkylation using the sulfuric acid method calculated?
Space velocity of olefins relative to the sulfuric acid reaction catalyst: It is calculated by taking the mass fraction of olefins in the feed, adding the mass fraction of trace olefins present in the recycled isobutane, plus the mass fraction of trace olefins in the coolant, and then dividing by the mass fraction of sulfuric acid in the reactor; thereafter, the volume space velocity can be determined. These are my personal opinions; please feel free to correct them.
It should be the ratio of the total acid amount in the reactor to the total olefin flow rate.