SORBENT COMPOSITIONS HAVING PNEUMATIC CONVEYANCE CAPABILITIES

摘要

A sorbent composition such as for the removal of a contaminant species from a fluid stream, a method for manufacturing a sorbent composition and a method for the treatment of a flue gas stream to remove heavy metals such as mercury (Hg) therefrom. The sorbent composition includes a porous carbonaceous sorbent such as powdered activated carbon (PAC) and a solid particulate additive that functions as a flow-aid to enhance the pneumatic conveyance properties of the sorbent composition. The solid particulate additive may be a flake-like material, for example a phyllosilicate mineral or graphite.

主权项

1. A sorbent composition, comprising a particulate blend of:
at least about 75 wt. % of a porous carbonaceous sorbent having a median particle size (D50) of at least about 4 μm and not greater than about 15 μm; and at least about 0.1 wt. % and not greater than about 5 wt. % of a solid particulate additive, the solid particulate additive having at least one particle property selected from:
(i) a median aspect ratio of not greater than 0.7;(ii) a median circularity of not greater than 0.92; or(iii) a median elongation factor of at least 0.3.