UOP20X – Computer Controlled Modular Evaporator Series

 

UOP20X – Computer Controlled Modular Evaporator Series

The UOP20X is a modular system of evaporators for teaching chemical engineering. Using the various modules a wide range of configurations can be implemented: rising or falling film; single or double effect; forward, backward or parallel feed.

Description

The UOP20X is a modular system of evaporators for teaching chemical engineering. Using the various modules a wide range of configurations can be implemented: rising or falling film; single or double effect; forward, backward or parallel feed.

The evaporators are fully computer controlled, supplied with educational software including process control and data logging facility.

The Evaporator Service Unit (UOP20X) contains all the services and facilities to implement a laboratory evaporation system. It comprises a feed pump and preheat system, vacuum pump, condenser, collection vessels and control console containing a full set of instrumentation, all mounted in a sturdy steel framework.

Two mounting positions are provided for the modular evaporation columns.

Two basic variants of the UOP20X are available, dependent on whether it is required to use steam as the process heating source or pressurised hot water.

The UOP20X-STM includes a steam control valve and steam pressure gauge. It is powered from an external steam source, such as the Armfield UOP10 or any other suitable laboratory steam supply.

The UOP20X-PHW includes a pumped recirculating pressurised hot water system complete with integral three term temperature controller. Therefore service requirements are simply an appropriate electrical supply and a cooling water supply.

Each UOP20X includes a control console, containing all of the electrical components, controls and displays for the evaporator. Twelve process temperatures, three conductivity readings and the vacuum level can be displayed.

It also includes preheat temperature controller, speed controls for the feed pump and recirculation pumps, the computer interface and electric mains switching controls.

All important electronic sensors used on the unit provide outputs for data logging and analysis. The data loggers, provided with the unit, interface between the unit and the user’s computer using two USB ports.

The educational software package enables data recording, graph plotting and provides full instructions for setting up the equipment and performing the experiments.

The unit can also be operated in remote control mode, whereby the majority of the control panel functions can be implemented directly from the PC.

All related theory and help texts are provided. The software requires a computer (not supplied) running Windows 7 or later with a USB port.

Although a wide range of products may be concentrated in the evaporator, the software includes algorithms so that when potassium chloride is used, the computer display indicates the product concentrations directly. These are calculated in real-time from the temperature and conductivity readings.

The computer software also includes a fully configurable controller for performing process control experiments.

The effect of a vacuum on evaporation temperature can be demonstrated, a vacuum pump is incorporated and a display indicates the level of vacuum. In a double effect system the vacuum is applied to the second stage.

 

Technical Specifications

Evaporator column length: 1m

Pressurised water heater: 4kW

Feed preheater: 2kW

Conductivity displays: 0-100mS

Features & Benefits

  • Service unit capable of housing one or two evaporator columns
  • Either a rising or falling film column may be installed in each position
  • Two service units are available, one incorporating an internal electric powered pressurised hot water system and another that requires
  • externally supplied steam as the heating medium
  • Controllable recirculation on each evaporator
  • High vacuum capability for low temperature evaporation
  • Built in USB interface for data logging on user supplied PC
  • All functions are controllable by software or manual control
  • Educational software is included with the UOP20X, giving details of the equipment, evaporation theory, laboratory worksheets, logging and analysis of results
  • Process control investigations may be performed using a PC to control the equipment. The software includes fully configurable
  • PID controllers
  • Fully instrumented to indicate product concentration (directly displayed by the software)

Downloads

  • Mass balances
  • Energy balances
  • Comparison of economies for single effect and double effect evaporation
  • Comparison of economies for forward, backward and parallel feed
  • Variation of evaporation rate with heating medium temperature
  • Variation of evaporation rate with system pressure
  • Dependence of heat transfer coefficient on circulation rate
  • Dependence of heat transfer coefficient of condenser on flow rate
  • Process control exercises

Electrical supply:

  • UOP20X-PHW-A: 220-240V/1ph/50Hz, 35A
  • UOP20X-PHW-G: 220-240V/1ph/60Hz, 35A
  • UOP20X-STM-A: 220-240V/1ph/50Hz, 25A – Steam: 10kg/hr at 2 bar
  • UOP20X-STM-G: 220-240V/1ph/60Hz, 25A – Steam: 25kg/hr at 2 bar

All units require cooling water flow at up to10 l/min

Computer:
A PC (not supplied) running Windows 7 or later, with two USB ports is required if running the data logging software
UOP10 Laboratory Steam Generator:
If the UOP20X-STM is ordered an external steam supply is
required. Armfield can provide a Laboratory Steam Generator
UOP10 with a heat output of 30kW.

PACKED AND CRATED SHIPPING SPECIFICATIONS

UOP20X: Including up to two evaporation columns

Volume: 5.0m³

Gross weight: 450Kg max

Length: 1.5m

Width: 0.9m

Height: 2.5m

UOP20X-PHW-A: 220-240V/1ph/50Hz, 35A
UOP20X-PHW-G: 220-240V/1ph/60Hz, 35A
UOP20X-STM-A: 220-240V/1ph/50Hz, 25A – Steam: 10kg/hr at 2 bar
UOP20X-STM-G: 220-240V/1ph/60Hz, 25A – Steam: 25kg/hr at 2 bar

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