Power and Recovery Applications

Mills generally use refractometers to measure the concentration percentage of their black liquor applications. However, refractometers require periodic cleaning and calibration of windows that would require a plant shutdown or loss of control. Emerson's Micro Motion Elite Series Coriolis Meter can provide a direct mass flow and density measurement, minimizing the amount of calculations and instruments. In addition, as maintenance is not required on a frequent basis, costly downtime is significantly reduced. Micro Motion ELITE Coriolis Meters are the leading precision flow and density measurement solution offering the most accurate and repeatable mass measurement for liquids, gases, or slurries.

The Emerson Rosemount™ TUpH® large area reference junction offers minimum maintenance requirements. The reference junction provides an electrical connection between the reference electrode and the sample, and helps maintain a stable reference potential, regardless of the change in sample pH. The Rosemount™ TUpH® 398R pH and ORP Sensors are well-suited for this kind of application. The wide-area junction provides resistance to coating, while the patented helical pathway prevents process intrusion into the inner reference chamber. Construction materials of Tefzel and Kalrez are used to withstand the strongly oxidizing environment.

The Emerson Rosemount™ 3051S MultiVariable™ Transmitter eliminates measurement errors caused by gas expansion and addresses six flow rate measurement factors. It accounts for changes in the discharge coefficient, velocity, bore diameter, density, and gas expansion, therefore eliminating bias error.

The Emerson Rosemount™ Level Transmitter - Guided Wave Radar provide an alternative for steam drum level measurement as they offer a number of important advantages over differential pressure and level technology. These transmitters measure level in a way that is completely independent of liquid density, so the complexity of density compensation is not required. Further, these transmitters are able to measure level at temperatures up to 400°C and pressures up to 345 bar. They provide accurate and reliable measurements of liquid level even when the operating environment includes mechanical vibration and high turbulence.

Reduce wiring and conduit costs by measuring multiple points with a single transmitter.

Advantages:

• Increase reliability on critical temperature measurements by utilizing a transmitter with 'hot backup'
• Use advanced diagnostics to predict measurement degradation
• Input Callendar-Van Dusen constants into your Emerson Rosemount™ 3144 Temperature Transmitter or Rosemount™ 644 Temperature Transmitter to provide a higher accuracy to your measurement (Rosemount also provides a complete line of temperature sensors and thermowells) 

The steam header system automatically coordinates all boilers, PRVs, steam turbines, and vents in a prioritized manner to stabilize steam headers during upsets and maintain a proper thermodynamic balance. The Energy Management System (EMS) then optimizes energy costs and generation by employing facility-specific models and rule sets to continually determine the optimum setpoints for all powerhouse process units.