The Shock Pulse Generator (SPG), is online boiler cleaning equipment that automatically generates Shock Pulses (SP) through the use of pressurized gas combustion. This innovative alternative to Steam Sootblowers has proven its outstanding performance worldwide with more than 800 different installations in 20+ countries.
The Valmet Shock Pulse Generator (SPG) is a uniquely tailored solution for tough boiler cleaning applications. Through the use of combustion-generated pulses, the unit efficiently removes ash and slag build-up across a broad range of boiler applications.
Safe cleaning operation with no collateral damage to boiler tubes.
When compared to sootblowers, the SPG has a much smaller footprint. This is particularly helpful in areas that plug up frequently, but adding an additional sootblower isn’t an option because of a lack of space.
Developed in 2009, the Shock Pulse Generator (SPG) is an on-line boiler-cleaning device that generates automatic, directed shock pulses/waves. The shock waves are created through the controlled combustion of a mixture of burnable gas (Natural Gas or Methane) and air. Contrary to manual processes, the combustion is carried out automatically and outside of the boiler, in a pressure-resistant device. The resulting supersonic shock wave is introduced into the boiler by means of a valve and a discharge nozzle. The combustion gas, the boiler tubes, and walls are put into a short oscillation, so that deposits, i.e. slag and fly ash, are cleaned off.
The SPG is mounted to the outside of the boiler wall with a discharge nozzle being introduced into the boiler by means of a boiler nozzle or manhole. SPG's are manufactured from special high-pressure, high-temperature stainless steel and are available in two different models, SPGr10 and SPGr16.
The following steps are performed during one cycle:
The online boiler cleaning equipment removes slag and ash and can be used to replace or enhance sootblowers, shot ball systems, water canons, rapping systems, sonic horns, and shower cleaning systems (SCS).