Application
examples:
Refiner (TMP) Optimization
(freeness throughput and
energy consumption)
The MultiSimplex® Controller
optimizes the following control variables:
-
Dilution water flow
-
Disc gap
- Production rate
To achive the optimal joint response based on the following response variables:
-
Freeness
-
Specific energy consumption
-
Production rate
Screening (pulp) Optimization
(freeness, shives and long fiber content)
The MultiSimplex® Controller
optimizes the following control variables:
-
Dilution water flow
- Reject
flow / rate
To achive the optimal joint response based on the following response variables:
-
Freeness
-
Shive and/or long fiber content
-
Reject flow
SNCR Optimization
(NOx, NH3 and cost minimization)
The MultiSimplex® Controller
optimizes the following control variables:
-
NH3 flow nozzle 1 - n (Based on a non-linear function
using temperature, if available)
-
NH3 conc.
To achive the optimal joint response based on the following response variables:
-
Cost (emission taxes + chemical costs)
-
emissions (NOx, NH3)
Combustion Optimization
(NOx and CO minimization, power maximization))
The MultiSimplex® Controller
optimizes the following control variables:
-
Primary air distribution
-
Over fire air distribution (Secondary,
tertiary, etc air flows)
- O2
set point.
- Air / fuel
ratio
- Fuel infeed
rate
To achive the optimal joint response based on the following response variables:
-
Power / Energy output
-
emissions (NOx, CO)
The MultiSimplex® Controller
controls the following control variables:
-
Amount of NaOH
-
Pulp temperature
-
Amount of O2
The MultiSimplex® Controller
reads and optimizes the following response variables:
-
Kappa number in
-
Kappa number
out
-
pH out
-
Temperature before reactor
-
Temperature in reactor
-
Temperature after reactor
================================================================
The MultiSimplex® Controller
controls the following control variables:
-
Discharge Ratio
-
Vacuum valve, forming roll
-
Vacuum valve,
zone X
-
Vacuum valve,
zone Y
-
Vacuum valve,
zone Z
The MultiSimplex® Controller
reads and optimizes the following response variables:
-
Formation (Signal
from a Measurex or similar density/weight distribution analyzer)
-
Discharge Ratio
================================================================
================================================================
Optimization of the board
density profile out of a panel board press (MDF or Particleboard):
The MultiSimplex® Controller
controls the following control variables:
-
Press temperature (One or two zones)
-
Pressure or position, Zone A
-
Pressure or position, Zone B
-
Pressure or position, Zone C
-
Pressure or position, Zone D
-
Pressure or position, Zone E
-
Pressure or position, Zone F
The MultiSimplex® Controller
reads and optimizes the following response variables:
-
Core density
-
Surface density
-
Sanding allowance (Distance from peak density to surface)
-
Width of “high density zones”
==============================================================
Optimization of forming
on a
panel board production line (MDF or Particleboard):
The MultiSimplex® Controller
controls the following control variables:
-
Control variable A
-
Control variable B
-
Control variable C
-
Control variable D
-
Control variable E
The MultiSimplex® Controller
reads and optimizes the following response variables:
-
Weight distribution cross wise
-
Weight distribution length wise
Optimization of Ultimate
Tensile Strength UTS (MPa) in steel rod plant
The
process involves the cooling of coils of steel rod after rolling to
Size.
During cooling, the steel transforms from one crystalline structure to
another, and the rate of cooling determines what the final properties of
the rod are.
The
coils are cooled on a conveyor system, which has sets of air blowers to
cool the coils as they pass over them. Obviously the cooling conditions
will depend upon the diameter of the rod being cooled. It is important
that the transformation has completed on the conveyor, but if the cooling
is too rapid then unwanted brittle phases can appear in the coil.
The
MultiSimplex® Controller controls the following control variables:
-
Laying Temperature (i.e. start temperature)
-
Conveyor Speed
Air
Blowers:
-
Zone A
-
Zone B
-
Zone C
-
Zone D
-
Zone E
The
MultiSimplex® Controller reads and optimizes the following response
variables:
-
Ultimate Tensile Strength UTS (i.e. stress to fracture the rod)
-
Ductility (i.e. amount of distortion before fracture)
-
UTS variation caused by overlapping coils affecting cooling
-
(Brittle phase formation.)
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