Liquid purification or separation – Processes – Chemical treatment
Patent
1988-10-06
1989-03-14
Wyse, Tom
Liquid purification or separation
Processes
Chemical treatment
210904, 134 3, 134 41, C02F 174, C02F 1108
Patent
active
048122432
ABSTRACT:
A method for operating a continuous wet oxidation system for destroying cyanide in caustic cyanide and metal wastes which scale upon heating. Raw waste is introduced into the wet oxidation reactor without heating while a mixture of heated dilution water and oxygen containing gas is introduced into the reactor by a separate inlet. The reactor is fitted with a pair of valved effluent lines and corresponding valved lines for introducing dilute mineral acid into each effluent line at system pressure. Oxidized effluent and offgases exit through a first effluent line while dilute mineral acid flows through a second effluent line into the reactor to prevent scale buildup. Periodically the flows are alternated such that oxidized effluent and offgases exit through the second effluent line and dilute mineral acid flows through the first effluent line into the reactor to remove scale. The oxidized effluent and offgases are then cooled and separated.
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Brandenburg Bruce L.
Cooley Curtis D.
Ellis Claude E.
Randall Tipton L.
Wyse Tom
Zimpro/Passavant Inc.
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