Silencer

Silencer combined with catalytic converter for internal combusti

Sintered composite filter

Slurry filtration device and flue-gas desulfurization system

Slurry thickening tank and absorption tower for use in wet flue

Small-scale boiler system using scrapped tires

Smart air cleaning system and method thereof

Smoke filter for internal combustion engines

Smoke filter with frangible supported filter bed

Snap-fit catalyst device

SO.sub.x , NO.sub.x , and particulate removal system

Solid fuel heating appliance and combustor apparatus therefor

Solid gas contact reactor

Soot burn-off filter for diesel engines

Soot oxidation catalyst and method of making

Soot treating apparatus for dust collector

Sorbent re-circulation system for mercury control

Sorptive catalyst for the sorptive and oxidative cleaning of exh

Space efficient exhaust aftertreatment filter

Spark-ignited internal combustion engine oxide gas absorbing...