Method for maintaining effective corrosion inhibition in gas scr

Details Method for maintaining effective corrosion inhibition in gas scr Method for maintaining effective corrosion inhibition in gas scr

1986-03-07

1987-09-01

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204 86, 204 87, 422 13, 423229, C23F 1300, B01D 5334

Patent

active

046907408

ABSTRACT:
Herein is described a technique for maintaining a copper ion in the plus 2 oxidation state, as it is employed as an inhibitor in an alkanolamine gas conditioning absorbent solution to provide corrosion protection of the metals in contact with the alkanolamine solution. The procedure disclosed for maintaining copper in the plus 2 state is to apply an induced or impressed voltage across a point, or several points, in the circulating copper containing solution of the gas conditioning plate for the recovery of CO.sub.2 from flue gas particularly when oxygen is present in the gas being treated.

REFERENCES:
patent: 679985 (1901-08-01), Palas et al.
patent: 2273798 (1942-02-01), Heise et al.
patent: 3241512 (1966-03-01), Green
patent: 3661742 (1972-05-01), Osborne et al.
patent: 4624839 (1986-11-01), Wolcott t al.

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