Summary of publication 

Inhalt:

1.  Introduction
2.  Intelligent Sootblowing is SMART Clean
3.  New intelligent furnace cleaning

3.1  Diagnostic
3.2  Intelligence
3.3  Control System
3.4  Cleaning Devices

4.  Application of Intelligent On-load Cleaning Technology at Power Plant Weiher III  
5.  Results
6.  Summary

Abstract

Application of intelligent furnace cleaning at the STEAG Saarenergie Weiher Power Plant stopped production losses through coarse ash accumulated in the hopper. Furthermore, the boiler off gas temperatur can be kept stable and the maintenane and operating costs for the cleaning system were cut by 50%. This result is decisively attributable to the integrated SMART Clean System comprising diagnostics, intelligence, control system and cleaning equipment.

The performance of the on-load boiler cleaning system has a significant impact on the overall performance of the steam generator. Fouling and slagging in the furnace as well as in the convective heat exchanger zone leads to a reduction in boiler efficiency and reduction in availability such as

• increase of furnace exit gas temperature
• increase of attemperator spray rate
• increase of boiler off gas temperature
• damages in the hopper area and the wet/dry bottom ash system as a result of big slag formations falling down from the furnace walls or/and superheater
• over-cleaning causes tube damage negatively effecting unit availability

All this shows quite clearly that the important criteria for a modern on-load boiler cleaning solution is to act flexible but selectively. This means to clean

• as early as necessary
• as little as necessary
• only in required areas
• as  effective  as needed

With the SMART CLEAN ISB PLATFORM Clyde Bergemann offers an integrated technology solution which provides INTELLIGENT CLEANING to meet these demands.

Summary

The intelligent SMART Clean ISB Platform CLEAN ISB PLATFORM comprising diagnostics, intelligence, control system and cleaning equipment has proved excellence and has been accepted for cleaning furnaces of fossil-fired utility boilers.
Particularly in the case of varying coal quality or imported coal this cleaning technology enables flexible reaction to the respective operating conditions. The modular structure and possible retrofitting result in considerable economic benefits for the owner/operator.
The above results which were achieved through application of this innovative cleaning technology at the STEAG Saarenergie Power Plant Weiher clearly show the advantages for today's operation of a steam generator with varying requirements.