Patent ID: 7722705

Claim:
A system for removing mercury from a combustion flue gas, comprising: a plurality of activated carbon honeycomb monoliths having a plurality of parallel cell channels bounded by porous channel walls traversing the honeycomb monolith from an upstream inlet end to a downstream outlet end, wherein two or more activated honeycomb monoliths are positioned adjacent to each other in series from upstream to downstream such that at least a portion of a flue gas conveyed through the downstream outlet end of a first honeycomb monolith is subsequently conveyed through at least a portion of the upstream inlet end of an immediately downstream second honeycomb monolith, wherein two or more adjacent honeycomb monoliths positioned in series are separated a predetermined distance such that an annular gap is defined between the downstream outlet end of a first monolith and an upstream inlet end of an immediately downstream second monolith, and wherein the annular gap defined between the downstream outlet of the first honeycomb monolith and the upstream inlet of an immediately downstream honeycomb monolith comprises a packed layer.