MULTIFUNCTIONAL PASTEURIZATION PILOT PLANT.

INTRODUCTION

This pasteurizer is designed to pasteurize liquid foods such as milk, clear juices, etc…
Pasteurization is carried out in a plate heat exchanger; after a holding period, it is followed by a fast cooling in a second plate heat exchanger, to limit the growth of residual microorganisms and the alteration of organoleptic characteristics of products.

TRAINING PROGRAM
This unit enables to deepen the following issues:
• Product quality versus the following parameters
- feed flow rate / holding time
- pasteurization temperature
• PID temperature control by microprocessor controller
• Energy balance
• Plant supervision

TECHNICAL SPECIFICATION
• Wheeled framework of AISI 304 stainless steel
• Max. feeding: 100 l/h (higher flow rates on demand)
• 2 plate heat exchangers (pasteurization and cooling) of AISI 316 stainless steel, with exchange surface of 0.1 m2
• Centrifugal feed pump of sanitary type with body of AISI 304 stainless steel and maximum flow rate of 1000 l/h
• Variable-area flowmeter of AISI 304 stainless steel, with range of 10 to 100 l/h, accuracy: ± 0.5%
• Cylindrical feed tank of AISI 304 stainless steel, mirror polished inside, with capacity of 80 l
• Cylindrical tank of AISI 304 stainless steel, mirror polished inside, with capacity of 80 l, for collecting the pasteurized product
• Tank of AISI 304 stainless steel, with capacity of 80 l, for collecting water/glycol solution
• Cooling circuit for water/glycol solution, including Freon 404a compressor, P = 3.5 kW, condenser, fi lter, liquid separator, thermostat
• Circulation pump of water/glycol solution with body of AISI 304 stainless steel and maximum flow rate of 2000 l/h
• Plate heat exchanger of AISI 304 stainless steel, for Freon/ water-glycol solution
• Four Pt100 thermoresistances with sheath of AISI 316 stainless steel
• 2 electronic temperature indicators
• 2 thermostats for controlling the cooling temperature of product and of glycol solution

• Microprocessor PID controller for controlling pasteurization temperature
• Electropneumatic converter
• Pneumatic valve of AISI 316 stainless steel, Cv = 2.5, for controlling the flow rate of hot water
• Connecting lines and valves of AISI 304 and 316 stainless steel
• Switchboard with protection degree IP55 complying with EC standards and including a differential circuit breaker and a schematic diagram of the plant
• Emergency button
• Pneumatic valve of AISI 316 stainless steel, Cv = 0.32, for controlling feed flow rate
• Electropneumatic converter, 4 to 20 mA / 0.2 to 1 bar, accuracy: ± 1%
• Supervision software this software runs in Windows and it is designed to control ON-OFF signals, analog signals coming from the controller, real-time trend and historical trend

Dimensions: 3200×800×2000 mm
Weight: 520 kg

ACCESSORIES (NOT INCLUDED)
• Hot water generator

Supplied with THEORETICAL – EXPERIMENTAL HANDBOOK