Reliable on-line silica analyser for pure water treatment
March 2015Analytical Instrumentation & Environmental Monitoring
As power plants continue to grow in size and equipment becomes more expensive, it is crucial to monitor and manage the quality of the pure water used in the power cycle. High levels of sodium and silica can damage equipment like boilers and turbines leading to expensive maintenance as well as unplanned shutdowns. That is why it is essential to ensure that these levels are the lowest possible and to have an early warning in case levels start to rise.
The Mettler Toledo Thornton 2800Si silica analyser is a reliable on-line instrument designed specifically for pure water treatment and power cycle chemistry monitoring. This analyser provides assurance of water purity to optimise ion exchange production of pure water and to minimise silica deposition in turbines. Early detection of trace contamination is enabled with minimal operator supervision.
Applications include ultrapure water monitoring at ppb silica levels. Silica breakthrough of polisher anion resin is detected at very low ppb levels and contaminated water can be diverted before it reaches critical areas. The pure water treatment anion exchange monitoring detects the first breakthrough of silica to trigger regeneration before contamination reaches subsequent treatment stages.
Power steam quality monitoring protects turbines from silica deposition and resulting imbalance, loss of capacity and efficiency. Power condensate polisher monitoring can detect the need for regeneration at low ppb levels before feed water is significantly contaminated.
Mettler Toledo Thornton supplies sodium and silica analysers with fully unattended, automatic calibration to minimise operator error and provide reliable measurements at extremely low concentration levels.
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