Multi-envelope models for batch, fed-batch, cyclic, grade-change and all sorts of non-continuous processes
Most of our webinars could be described as “Operating
Envelopes 101 – part 1” because they are based on continuous processes where
the continuous operation Mode can be described with a single Operating
Envelope. This is important because for many attendees our webinars are their
first introduction to parallel coordinates, n-dimensional geometry and
multi-dimensional Operating Envelope applications. But many real processes such
as batch, fed-batch, cyclic, grade-change and all sorts of non-continuous
processes require more than one Operating Envelope and that’s what this webinar
will introduce. And, yes Modes can be made time-dependent by including time
variables. Even continuous processes really have more than one Mode such
as for Start-Up and Shut-Down as well as Modes for Standby, different throughputs
and Special Modes for, for instance, catalyst regeneration. You’ve
probably seen batch processes controlled by trying to follow a defined
trajectory on a very small number of variables such as reactor temperature or
concentration. Operating Envelopes linked to form a chain allow you to control
the process into a multi-variable tube of hundreds of variables instead of just
one or two and since they include Result variable range predictions they are
better at handling external disturbances and at achieving desired end-points.
Golden Batches every time is our ambition! Come and see how it is done in this webinar.
First presented on: 29 June, 2022.
Presenter: Robin Brooks PhD