Plate Evaporator
Plate Evaporators are similar to the Semi-Welded Plate Heat Exchangers and are rising film plate evaporators. Suitable for liquids with high concentration and/or viscosity. Typical applications for Plate Evaportator are sugar refinery evaporation systems, sweeteners evaporation systems, bioethanol and caustic evaporation.
It is also suitable as a thermosiphon reboiler.
Professional Design for High Thermal Efficiency
Its design provides higher thermal efficiency when compared with the traditional shell-and-tube evaporators therefore for the same duty much less heat transfer area is needed. Plate Evaporator are cost-efficient especially when special materials are required.
A further advantage is that they are still working efficiently when the temperature differential between the hot and cold fluids approaches as close as 2.5°C (4.5°F) meaning that lower grade steam and more effects in series can be use in an evaporation system compared to the shell-and-tube systems. This can lead to huge savings in steam and other associated costs.
Compact Structure and Easier to Maintenance
Plate Evaporators are easily accessible for inspection and mechanical cleaning by removing the tightening bolts and rolling back the pressure plate.
The Plate Evaporator can be modified (by adding or removing plates from the plate pack) to cope with changes in process conditions, which with a Shell and Tube Heat Exchanger is not possible.
Working Principle
The heat transfer area of a gasketed plate-and-frame heat exchanger consists of a series of corrugated plates, assembled between the frame and pressure plates, which retain the design pressure. The sealing between the plates on the Evaporator alternates between laser welds and gaskets, just like with a Semi-Welded Plate Heat Exchanger. It has two inlet feed connections located centrally at the bottom of the frame plate and a large outlet for the vapour and concentrate at the top. The heating steam condenses in the welded channels and the evaporating product passes through the gasketed channels.
Plate Evaporator Vap500 Plate Evaporator
