|
|
Facilities
>
Pilot Scale Crystalliser
|
| Plant |
This is a new installation at the Department of Chemical Engineering, University of Sydney. The pilot facility
consists of two units; One commercially designed and built consisting of a 75-Litre crystallizer vessel and a
number of accessories including feed tanks, pumps, condensers and collection tank, all inside a rigid frame. A
special feature of this unit is that its vessels and pipes are constructed from glass, allowing
visibility of fluid flows and interactions. The second unit, is designed and built in-house at the
Department. It houses the utilities that supply the crystallizer unit with heating and cooling duties. Heating
and cooling of crystalliser contents is undertaken by a heat exchange
fluid flowing through the crystalliser jacket. Oil is circulated through the jacket of the crystalliser vessel
by a centrifugal pump.
A number of sensors may be inserted into the crystalliser vessel through the lid ports. These sensors include
temperature, conductivity, pH and redox potential. Other sensors such as particle size instrumentation may also be
incorporated as they become available through one of the lid ports.
|
|
|
| Control System |
A Honeywell Plantscape industrial distributed control system (DCS) is interfaced to the pilot facility providing a
monitoring and regulatory/advanced control functions. Data communication between the Honeywell Plantscape DCS and
process modelling software (gPROMS) was established via a NAPI interface allowing the model to act as a soft sensor
providing crystal size data to the model predictive controller (MPC) built in MS Excel VBA.
The plant is heavily instrumented allowing the operator to keep track of the progress of the crystallisation via the
operator displays and monitoring graphical user interfaces.
|
|
|
|
|
This site is best viewed with version 5.0 browsers or above (IE & Netscape). www.pseonline.net |
|
Introduction to Process Control, Second Edition
Out Now!
|
