Roll for a furnace roller grate, especially for burning waste, with a tubular lining formed by annular grate bars separated between them by air gaps of constant width
FR787581A
Device for steam injection into horizontal retort hard coal distillation furnaces
FR786436A
Device for supplying air to gasifiers
FR43881E
Device for injecting steam into the coal distillation chambers
FR732415A
Device for injecting steam into the coal distillation chambers
FR688012A
Improvements to discontinuous vertical chamber furnaces
FR676132A
Mechanical control for lower doors of discontinuous chamber furnaces
