The body of CC Condenser is split into primary and secondary condensers: the smaller secondary condenser is surrounded by the larger primary condenser. In the secondary condenser the cooling water flows upwards inside the tubes and the vapor flows downwards outside the tubes. In the primary condenser the flow directions are the opposite. Thus, the complete countercurrent flow arrangement is achieved in both condensers. Methanol rich foul condensate is taken out from the secondary condenser.