CPC Subgroup
F23B 90/04 including secondary combustion (in separate combustion chambers F23B10/02)
Full Title
Combustion methods not related to a particular type of apparatus > including secondary combustion (in separate combustion chambers F23B10/02)
2 direct subcodes
Child Classifications
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- F23B 90/06 the primary combustion being a gasification or pyrolysis in a reductive atmosphere
- F23B 90/08 in the presence of catalytic material