| |
|
|
| |
 |
| • |
$1.5M savings
from fuel and additional electricity generation |
| • |
Reduced CO2 emissions by 25,000 tonnes |
| • |
Project payback of less than 3 months |
| • |
Beneficial operation within 6 months of signing contract |
|
|
|
|
Challenge
The utilities plant produces both steam (1644 tonnes/hour) and
electrical power (280 MW) that is supplied to users elsewhere on the
Grangemouth site. The plant consists of 8 boilers, 7
turbo-alternators and a CHP plant that is owned and operated by a
3rd Party. There is provision for importing or exporting electricity
to the grid (normally exporting when the CHP plant is running).
Within the utilities plant there are effectively two main steam
levels on the plant, EHP and MP. The other three levels, HHP, HP and
LP are each supplied from either EHP or MP and have user demands
only (i.e. no generation at those levels).
The utilities plant was the focus area in a procurement
initiative to lower energy costs. It was considered that an
optimization system was to be a key factor in achieving consistent
plant operation, improving the control of daily Key Performance
Indicators (KPI) and enhancing the planning process through improved equipment selection.
Solution
AMS Optimizer was
selected as a key technology in achieving consistent
plant operation, improving the control of daily KPIs and enhancing
the planning process through improved equipment selection.The
utilities optimizer delivers operational benefits by reducing fuel
usage and increasing generation of electricity. AMS Optimizer, a
component of Emerson's AMS Suite, runs every 5 minutes and provides
recommendations for the optimal steam generation (on a boiler basis)
and power generation (on a turbine basis). The recommended setpoints
are displayed for the operators including the amount of opportunity
that is lost (i.e. the difference in cost between current and
optimal operation). A graphical summary screen is also provided,
allowing users to see the full AMS Optimizer solution in one place.
The plant operations and engineering staff have access to
displays that replicate the information displayed on the DCS
graphics. The cumulative opportunity lost on a shift-by-shift basis
is also calculated and used by management at each start-of-day
meeting.
An off-line version of AMS Optimizer is included, enabling the
generation of optimal weekly operating plans. Emerson configured the
off-line version to generate plans in exactly the same format that
was already used, enabling the engineers to use AMS Optimizer
effectively.
* The original customer was BP.
 Back
to Top |
|
|
|
