Equipment

Soap Layer Detection System (SLDSII)

A.H. Lundberg System's SLDS II was developed for use in the Kraft pulping recovery process where soap and liquor separate. Knowing where the interface between soap and liquor as well as the soap layer thickness has always been a problem. The SLDS II Level System accurately provides continuous measurements of the soap layer thickness. The system is modular in design, available in a selection of electronics housing styles and sensor hose measurement lengths.

System Benefits:

• Reduce operator attention of tank levels.
• Can prevent slugs of soap from entering equipment.
• Increased Evaporator efficiency in pulping applications.
• Reduce environmental spill hazards.
• Improved Tall Oil quality control.
• Low maintenance costs.

Equipment Benefits:

• Does not require re-calibration over time.
• Only needs one opening on top of the tank.
• Longest interface measurement range on the market.
• Easy commissioning via PC based software.
• Measurement in low dielectric processes.
• Operates in very harsh process conditions.

SLDS II installation showing level transmitters and tank nozzle

This graph from an actual installation shows the inaccuratetraditional hydrostatic level transmitter versus the actual interface and soap surface levels measured by the SLDS II