Reducing ignition risk for activated carbon

Details Reducing ignition risk for activated carbon Reducing ignition risk for activated carbon

1998-12-15

2000-08-01

Spitzer, Robert H.

Gas separation: processes

Solid sorption

Inorganic gas or liquid particle sorbed

95147, 96108, 96143, 55519, B01D 5304

Patent

active

060961163

ABSTRACT:
A sorbent material, an activated carbon canister and a method are described which can be utilized to remove organic compounds from a vaporous stream with a relatively greater degree of safety, as compared to previously known methods. In the invention, essentially dry and wetted activated carbon particles are intermixed in a substantially homogeneous mixture which inhibits accidental combustion. The heat capacity of wetted carbon particles retards the heating of nearby unwetted particles, so as to inhibit the ignition of the nearby unwetted particles. The presence of wetted particles intermixed in the substantially homogeneous mixture has relatively little effect on the hydrocarbon adsorption performance of the mixture.

REFERENCES:
patent: 1872080 (1932-08-01), Harris
patent: 4239508 (1980-12-01), Rock et al.
patent: 5493035 (1996-02-01), Soltani-Ahmadi et al.
patent: 5814132 (1998-09-01), Grime et al.
Article "Preventing Carbon Bed Combustion Problems" by A.A. Naujokas of Loss Prevention vol. 12, pp. 128-135, Published by American Institute of Chemical Engineers (1979).
Article "Assessment of Activated Carbon Stability toward Adsorbed Organics" by Edmond C. Akubuiro and Norman J. Wagner of Ind. Eng. Chem. Res. (1992), vol. 31, pp. 339-346, Published by American Chemical Society.

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