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Abstract
Title: Bergemann-Lance-Type Water Blower for Coal-Fired Boilers
Author: Dipl.- Ing. Franz Bartels; Dipl. Ing. H. -G. Weber
Pubished: „VGB – Kraftwerkstechnik (75) Nr. 11"
Edition: 1995

 

Summary

Residues from the combustion of coal fuels cause considerable problems during the operation of boiler plants. The efficiency of steam generators is adversely affected by sometimes tenacious slag and ash deposits on the heating surfaces and the boiler operating time is reduced.

In particular the combustion of varying coal grades with a wide fuel range, besides specific requirements for stable firing operation, raises above all also the question of how to control slagging at the different steam generator heating surfaces.

At the evaporator heating surfaces of the combustion chambers particularly tenacious slagging can occur which cannot always be removed by steam and air as blowing agent. That is why already about 40 years ago water was introduced in German power plants as an alternative cleaning agent.

Conclusion

The owner/operator is very satisfied with the functioning and cleaning effect of both WLB 30. The recorded test results and over 150 installations to date demonstrate the high WLB 30 potential of application. Besides the better and also more careful cleaning effect, the increased economic efficiency over that of the former technology is also decisive for the success of the WLB 30 blower.

Installation of the WLB 30 blower in the new utility power plants in Saxony and Brandenburg, such as "Schwarze Pumpe“ and "Boxberg 3“ constitutes a very special success. Moreover, precisely the WLB 30 can be used for difficult fouling conditions and at hardly accessible points. With the WLB 30 blower you can clean, for example, areas such as hoppers, central walls, etc. which so far were not sufficiently reached.

The WLB 30 blower is marketed by Bergemann worldwide and it was already presented at several fairs, among others in Asia.

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Our efforts now show clear success. After the WLB 30 blower has already been installed abroad, in India and China, now wide application is observed at several power plants in Australia, for precisely in Australia great cleaning problems arise with sometimes very critical coal grades.

The WLB30 blower is intensively further developed by Bergemann, in 1995 alone 10 new patent applications were filed. For the future coupling of the WLB blower with a furnace observation system and the Bergemann optimisation software CEOS promises further improvement of the whole system.

At present Bergemann is intensively working on this further development, in co-operation with universities.

For more informations please request the original experience report !

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