Cabot Corporation
ERODANTS AS CONVEYANCE AIDS AND METHOD OF MERCURY REMOVAL

Abstract:

Aspects of the present disclosure are directed to mixtures and methods for pneumatically conveying powdered materials. A method includes providing a pneumatic conveyance system with a gas stream having a gas velocity; providing particles of sorbent material having a median sorbent particle size d.sub.50, sorbent from 1 .mu.m to 28 .mu.m; injecting the particles of sorbent material into the gas stream; providing particles of erodant material having a median erodant particle size d.sub.50, erodant of at least 150 .mu.m, where the erodant material is provided in an amount from 0.5% to 3% by weight of the particles of sorbent material; and injecting the particles of erodant material into the gas stream, where the gas velocity is sufficient to entrain the particles of sorbent material and sufficient to convey the particles of erodant material. A mixture of sorbent material and erodant material is also disclosed.