Forced Circulation Evaporator is used for the concentration of high viscous material & products with higher solids. It consists of a circulating pump, a separating space, an evaporator body with a vapour outlet at the top, a deflector plate, an outlet for discharge of thick liquor & an external heating surface. Liquid is circulated through tube by centrifugal pump where it is superheated & flashes into a mixture of vapour & liquid and two phase mixture impinges on a deflector plate in the separating space & vapors are removed from top and liquid is returned to centrifugal pump.