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Measurements for Recovery Boiler: Smart Heat Exchanger Weight Measurement

Measuring fouling live with the Smart Heat Exchanger Weight Measurement system is made possible by using custom strain gauge assemblies to measure weight changes in hanging heat exchange surfaces. System enables an improvement in the cleanability and availability of the recovery boiler.

Fouling of recovery boiler heat transfer surfaces, such as superheaters, is inevitable during liquor burning. Sticky soot deposits can significantly reduce heat transfer efficiency and availability​ of the boiler. Traditionally, continuous sootblowing is required to remove these deposits and keep the recovery boiler operational. Sootblowing is typically controlled by a pre-set sequence​, and shutdown inspections and process data is used to roughly estimate the extent and location of fouling​.

Smart Heat Exchanger Weigh Measurement Product Image

The Smart Heat Exchanger Weight Measurement (HEWITM) system offers aprecise solution by​ providing a direct measurement to monitor fouling​​. Accumulated ash is weighed real-time and the results are used to improve sootblowing sequence by targeting areas with higher fouling tendency. The Smart Heat Exchanger Weight Measurement system assists operators in identifying the most heavily fouled areas and can also be used to track condensate removal during start-up as well. 

Installation and maintenance of the system are easy, with no welding or shutdown required

Benefits

  • Improved cleanability and availability​
  • Optimized steam consumption​
  • Identification of ash lumps causing an safety risk
  • Condensate identification during start-up​

Additional solutions to maximize the full potential and​ to further enhance sootblowing efficiency​:

Sootblowing APC. Upper-level control system to efficiently use Smart Heat Exchanger Weight Measurement system data for optimized sootblowing​.

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