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Further experience in using detonation waves for cleaning boiler heating surfaces
Author(s) -
Hanjalić K.,
Smajević I.
Publication year - 1993
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4440170704
Subject(s) - boiler (water heating) , flue gas , detonation , waste management , boiler blowdown , engineering , shock wave , combustion , pulverized coal fired boiler , petroleum engineering , environmental science , forensic engineering , nuclear engineering , coal , mechanical engineering , chemistry , inlet , explosive material , organic chemistry , aerospace engineering
The paper presents some recent results of the application of the detonation‐wave method for on‐line removal of ash deposit from the gas‐side surfaces of two coal‐fired steam boilers, each of 340 t/h nominal steam production. The older of the two boilers, although of similar design, had a classic refractory lining, and served as a sensitive test of the possible harmful effects of shock waves. The method was applied on two boilers as a daily cleaning routine instead of the originally installed soot blowers. Detailed observation over a period of 18 months showed a general improvement of boiler performances in comparison with previous practice. Careful monitoring of possible undesired side‐effects, such as the appearance of cracks or other damage on boiler structure and refractory walls, or excessive flue gas opacity, gave no cause for alarm and proved that the method is safe and in compliance with standard safety and environmental regulations. Some aspects of the design of the wave generators, their installation in boilers and operation are discussed.