Patent ID: 8029600

Claim:
A method for removing a vapor phase contaminant and particulate from a gas stream produced by a combustion device, comprising: passing a gas stream produced by a combustion device and comprising a vapor phase contaminant and particulate through a primary particulate collection device comprising a housing and at least one particulate collection section; removing at least a portion of said particulate from said gas stream using said at least one particulate collection section; passing said gas stream through a sorbent filter after said removing of said portion of said particulate, said sorbent filter comprising a pair of porous surfaces and a bed of sorbent particles disposed between, and contained by, said porous surfaces and positioned within said housing of said primary particulate collection device downstream of and physically separate from said at least one particulate collection section, wherein said sorbent particles comprise a plurality of granular or pelletized sorbent particles; removing at least a portion of said vapor phase contaminant from said gas stream using said sorbent filter; removing at least a portion of said sorbent particles from said sorbent bed to a container disposed outside of said housing of said primary particulate collection device concurrently with said passing said gas stream through said sorbent filter; and adding additional sorbent particles to said sorbent bed.