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Heated, smart and modular sample handling system: Enabler for closed-loop process control

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This white paper/case study documents the rationale and steps for deploying a modular sample handling system solution in a moisture-sensitive process, from concept through commissioning and operational performance.

By Jamie Canton, Analyzer Specialist, Lanxess and Steve Doe, Analytical Market Manager, Parker Instrumentation Group

ACCURATE moisture measurement and control is necessary to maintain profitability in many chemical and petrochemical processes. While on-line moisture analyzers provide plant operators with moisture level and trending visibility through a Distributed Control System (DCS), many process engineers and control room plant operators remain skeptical over the accuracy of such data. This is because sample handling systems (SHS) are historically prone to problems that compromise the analyzer’s data accuracy.

The system utilizes compact SP76(3) modular flow control components in a heated enclosure, with a novel proportionally controlled conductive heater for both the sample system and enclosure purge. Key tools enabling operators to interface with the system include an automated validation function and sample bypass and analyzer flow indication available over the DCS. These tools enable the process engineer to assign more weight to the analyzer’s results in the application program. Lessons learned from this project and a resulting strategic plan for deploying the technology in other areas, including closed loop process control applications, will also be discussed.

File Size: 735 KB
File Type: PDF

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