Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1993-03-01
1993-12-21
Andrews, Melvyn J.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
210673, 210679, 210688, 210689, 95134, C22B 4300
Patent
active
052717607
ABSTRACT:
Mercury is often removed as an impurity from process fluid streams by adsorption in fixed beds using any of several well-known adsorbents having the ability to selectively adsorb mercury. It is also common to reintroduce this sequestered mercury into the environment by means of the spent gas used to periodically regenerate the fixed beds. A solution to this problem is provided by the present invention in which the mercury is removed from the process stream using at least two cyclically regenerated adsorption beds in combination with a condenser whereby upon regeneration of one bed, the regeneration stream effluent therefrom is treated in the condenser to recover the bulk of the mercury as liquid mercury and recycling the overhead from the condenser to another bed engaged in the adsorption-purification of fresh feedstock.
REFERENCES:
patent: 3755989 (1973-09-01), Fornoff et al.
patent: 4101631 (1978-07-01), Ambrosini et al.
patent: 4874525 (1989-10-01), Markovs
patent: 4892567 (1990-01-01), Yan
patent: 5089034 (1992-02-01), Markovs et al.
Barrer et al, J. Chem. Soc. (1967) pp. 19-25.
Markovs John
Maurer Richard T.
Andrews Melvyn J.
McBride Thomas K.
Miller Richard G.
UOP
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