Climbing Film Evaporator

quick overview :

Climbing Film Evaporator

Main characteristics of the pilot

• Industrial instrumentation
• Flow switch of the condenser cooling water for operators safety
• Borosilicate glass and stainless steel AISI 316L manufacturing
• Rigid process pipes
• Steam safety valve
• Heating pipes insulation and protecting panels for operators safety
• Atmospheric or vacuum process

Principle of Working:

The aim of evaporation is to concentrate a solution consisting of a volatile solvent and a non volatile solute. Climbing film evaporation is a continuous operation in which the solution is heated in a continuous jacketed stainless steel evaporator at high temperature. In the liquid – gas separator, the concentrate solution is collected and the vapour is evacuated, condensed and collected in the solvent receiver.

Teaching objectives

• Study of the following parameters :
• Continuous concentration of a solution using evaporation process.
• Operating condition influences.
• Calculation :
• Thermal balance.
• Mass balance.

Technical specifications

• Feed solution tank, made of polyethylene.
• Feed solution metering pump, AISI 316L stainless steel body, P.T.F.E. diaphragm, manual control.
• Climbing film evaporator made of AISI 316L stainless steel; jacket steam heating; removable insulation.
• Cylindro-conical cyclone made of borosilicate glass for liquid – vapour separation.
• Vertical coil condenser, made of AISI 316L stainless steel; borosilicate body.
• Solvent heat exchanger, made of AISI 316L stainless steel.
• Solvent receiver, made of borosilicate glass equipped with a drain ball valve made of AISI 316L stainless steel and a lid made of AISI 316L stainless steel.
• Concentrate heat exchanger, made of AISI 316L stainless steel.
• Concentrate receiver, made of borosilicate glass equipped with a drain ball valve made of AISI 316L stainless steel and a lid made of AISI 316L stainless steel.
• Vacuum trap made of borosilicate glass equipped with a drain ball valve made of AISI 316L stainless steel.
• Steam supply circuit with steam filter, steam relief valve, steam flow adjustable valve, safety valve, condensate bleeder and protection panel of operators safety.
• AISI 316L stainless steel connecting tubes for the process and reinforced PVC for cooling fluid tube.
• Support framework with AISI 304L stainless steel tubes, aluminium connecting nuts and adjustable feet.

Instrumentation:

• Cooling water feed to condenser fitted with variable area flowmeter with its adjusting valve and water flow switch to turn off heating in case of lack of cooling water.
• Heating steam pressure gauge, « BOURDON » type manometer.
• Vacuum pressure gauge, « BOURDON » type manometer.
• Electric cabinet, equipped with emergency stop push button, mains switch with indicator, ON/OFF switches and two temperature digital display indicators with nine Pt100 Ω type probes.

Dimensions and weight

• 1600 mm x 600 mm x 3200 mm ~ 150 kg.

Essential requirements

• 230 V / 50 Hz / single phase :1 kW.
• Cold water 10 °C / 3 bar : 600 l/h.
• Steam 6 bar : 5 kg/h
• Vacuum 10 mbar : 20 Nm3/h
• Drain for heating condensates.