Seal for a traveling grate
Sealing arrangement for chimneys with an annular pressurized spa
Self-cleaning chimney stack
Sewage disposal plant with evaporation/incineration means
Sewage screenings disposal system
Sewage sludge disposal
Sewage sludge treatment system
Sewage sludge treatment system
Slotted band type spacer for high temperature superheater tubes
Sludge drying system with recycling exhaust air
Sludge drying system with sand recycle
Sludge incinerator
Sludge incinerator
Sludge processor
Sludge treatment apparatus
Slurry coal feed system for fluidized bed reactor
Solid fuel conversion furnace
Solid-liquid waste incinerator utilizing liquid catalysts
Stack design
Static, dynamic and mechanical aspirator for a gaseous fluid