Enhancing boiler maintenance: insights from Shock Pulse Generator installation
Mar 14, 2024
An installation of Shock Pulse Generators (SPGs) in a biomass boiler in Germany has yielded valuable insights into enhancing operational efficiency and reliability. See how this installation has significantly improved boiler maintenance practices in all four passes of the biomass boiler.
Costly boiler tube buildup removed with a non-damaging solution
A 4 pass vertical biomass boiler was having problems. They were experiencing significant buildup on the boiler tube walls, resulting in large slag chunks falling and blocking the deslagger and damaging the stoker. Worse still, the deposits often resulted in mill downtime for cleaning or repairs to the damaged equipment. The integration of shock pulse generators has proven to be a transformative solution, significantly enhancing boiler maintenance efficiency.
Summary
Location
Germany
Challenges
Large slagging deposits are visible on the membrane walls and at the refractory
Extensive build up caused increases in flue gas temperature
Large slag chunks were breaking off and falling down onto the stoker
Blockages were happening at the deslagger
Mill downtime for cleaning and equipment maintenance
Solution
Installation of three Shock Pulse Generators (SPG) in passes 1 - 3
Secondary installation of a fourth SPG in the final pass of the boiler
Results
Very effective cleaning in 1st pass, build up completely removed
Increased cleaning in the 1st and 2nd passes led to lower flue gas temperature at the inlet of the 3rd pass
Increased efficiency of sootblowers in 3rd and 4th passes
Elimination of deslagger blockages and no further damages to the stoker
