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Metso DNA Boiler Sootblowing Manager

Introduction

Meeting the increasing requirements for cost-effective and undisturbed operation in today’s economical environment drives power plants to reach for the best possible soot blowing procedures and to avoid unnecessary outages.

The question is how to schedule and target soot blowing optimally. Too much of soot blowing causes unnecessary steam consumption and material deterioration, whereas insufficient soot blowing creates accumulation and blocks that may cause unpredicted shutdowns or increase the risk of corrosion.

Soot blowing also has a considerable effect on boiler efficiency and thus on power plant economy.

Metso DNA Boiler Sootblowing Manager - a Metso DNA Plant Management application* - provides the power plant maintenance and operating personnel with valuable information about the heat transfer characteristics and fouling of boilers, both in real time and historically.

The user interface of the application consists of a customized display(s) and report(s) containing the measured and/or calculated data. All calculations are based on the existing instrumentation, available manufacturer data and data from acceptance testing.

DNA Boiler Sootblowing Manager is a standardized application that can be used for different types of boilers, such as fluidized bed boilers, pulverized coal-fired boilers, oil/gas-fired boilers and grate-fired boilers - due to its openness and flexibility.

Benefits

The DNA Boiler Sootblowing Manager application provides the power plant maintenance and operating personnel with a tool that assists to optimize soot blowing. Changes in heat transfer distribution indicate which heat transfer surfaces need soot blowing thus helping to direct the soot blowing to correct positions. On the other hand, the soot-blowing interval can be extended, if the heat transfer distribution does not change after soot blowing.

The extensive storage of history data also enables long term monitoring of gradual, non-reversible deterioration - such as accumulation and blocks - before they cause unpredicted shutdowns.

The Boiler Performance Monitoring application is linked seamlessly to the overall automation applications, which guarantees efficient collaboration between plant management and plant control.

Features

The application includes calculation of the following heat transfer characteristics for each heat transfer surface:

  • Actual heat transfer rate [MW]
  • Expected heat transfer rate [MW]
  • Actual percentual heat transfer [%]
  • Expected percentual heat transfer [%]

The user interface of the application collects the heat transfer characteristics data of the boiler into easy-to-understand and easy-to-work-with report(s) and display(s).

The Boiler Fouling Monitoring Display shows the current status of the boiler heat transfer in a visualized form - the actual and expected heat transfer rates are shown as a bar graph presentation.

The Boiler Fouling Monitoring Report represents the long-term summary values of the actual and expected heat transfer.

Trends - for selected heat transfer surfaces - can be utilized to provide a quick overview of the heat transfer as well as the direction and magnitude of change.

*The Metso DNA Plant Management consists of modular applications specifically developed for the energy industry to meet the monitoring, reporting and production optimisation needs of power plants.

The Plant management applications are designed to assist in all areas of power plant operation - from management to production and maintenance.