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Endress + Hauser launches Liquiline CA80SI colorimetric analyzer for monitoring steam water exchangers
Silica is one of the key parameters of boiler feedwater and steam, as even low concentrations can lead to vitreous deposits on boiler walls, heat exchangers and turbine blades. This has a negative effect on the efficiency of a power plant and can even lead to breakdowns. The new, newly developed Liquiline System CA80SI silica analyzer enables highly accurate on-line analysis of silica with the best reliability and low maintenance. It helps plant operators to ensure the maximum life of their equipment.
Safety of power plant equipment
Measuring silica at the boiler drum prevents silica from building up in the steam, maintains optimum thermal performance as the boiler tubes are unaffected by deposits, and optimizes costly purge cycles. At the ion exchanger, the silica content provides an early indication when maintenance is needed, as it is one of the first ions to pass through the ion exchanger bed. Monitoring the presence of silica in the feed water at the condenser outlet enables rapid detection of water leaks.
The maximum permitted silica content in boiler feedwater is often contractually agreed between suppliers and power plant operators. The Liquiline CA80SI system provides online values directly comparable to laboratory results since it uses the standard heteropoly blue method. In addition, the silica analyzer offers detailed logbooks that help prove that the water quality has been kept within required limits.
Increased availability
The combination of peristaltic pumps and dispensing pumps in the Liquiline system forms the basis for reliable operation, while its automatic cleaning and calibration functions ensure precise operation over a long period of time without manual intervention. The integrated web server provides remote access to the silica analyzer, enabling rapid analysis of potential process disturbances and rapid countermeasures. These factors result in increased availability of the power plant.
Flexibility for the future
The silica analyzer offers seamless integration into almost any control system via Modbus, PROFIBUS or EtherNet / IP. It can be equipped with up to 6 sampling channels that allow connection to each required sampling point, such as a boiler, ion exchanger or feedwater make-up line. In addition, up to 4 Memosens sensors can be connected to the analyzer to make it a complete measuring station. Thanks to the flexibility of the analyzer, it will be easier to adapt to future process changes and needs.
