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Why is the liquid naphthalene fed through nozzles directly to the bottom of the reactor, in the fluidized bed for phthalic anhydride production?

Why is the liquid naphthalene fed through nozzles directly to the bottom of the reactor, in the fluidized bed for phthalic anhydride production? Correct Answer Liquid is immediately vaporized

According to Graham and Way, the liquid vaporizes on injecting through nozzle.

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