Double-Effect Rising-Film Evaporator

Evaporation is used to concentrate a solution composed of a volatile solvent and a less volatile solute. Learning Objectives: Continuous concentration of a solution by evaporation. Influence of operating conditions. Learn about Double-Effect Rising-Film Evaporator India for optimal educational outcomes.. Heat balances. Mass balances. Learn about Digital Double-Effect Rising-Film Evaporator for optimal educational outcomes..

Rising-film evaporation is a continuous process in which the solution is heated in a vertical single-tube evaporator to vaporise the solvent (first effect). In the top cyclone, the mist formed by solution vaporisation — comprising solvent vapour and concentrated solution — is separated into two phases: the concentrated liquid phase is removed by gravity and pumped via a metering pump into the second evaporator, while the vapour phase is used to heat the second evaporator.

Feed solution storage tank.
First-effect metering feed pump.
First-effect rising-film evaporator with borosilicate glass shell and 316L stainless steel steam heating tubes; removable insulation.
Borosilicate glass cylindro-conical cyclone for liquid–vapour separation.
Second-effect metering feed pump.
Second-effect rising-film evaporator with borosilicate glass shell and 316L stainless steel steam heating tubes; removable insulation.
Borosilicate glass cylindro-conical cyclone for liquid–vapour separation.
Vertical condenser with borosilicate glass shell and 316L stainless steel coil heat exchanger.
316L stainless steel solvent cooler.
Graduated borosilicate glass solvent receiver.
316L stainless steel concentrate cooler.
Graduated borosilicate glass concentrate receiver.
Borosilicate glass vacuum trap.
First-effect steam pressure reduction and regulation circuit with operator protection panel.
316L stainless steel process pipework and reinforced PVC coolant pipework.
Support frame in 304L stainless steel tubing with aluminium fittings.
Condenser cooling water supply with rotameter.
First-effect steam supply pressure gauges.
Second-effect steam supply pressure gauge.
Process pressure gauges.
IP55 control and instrumentation cabinet with emergency stop, start/stop buttons, and two digital temperature indicators for twelve Pt100 Ω probes.