Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1991-10-08
1992-11-10
Dawson, Robert A.
Liquid purification or separation
Processes
Ion exchange or selective sorption
210670, 210683, 210746, 423229, 423DIG14, B01J 4714
Patent
active
051620847
ABSTRACT:
Monitoring and controlling the reactivation of an alkanolamine solution containing heat-stable salts of such alkanolamine with stronger acid anions and weaker acid anions by contacting the alkanolamine solution (a) with a strong base anion exchange resin which has a high affinity for stronger acid anions (b) contacting the effluent alkanolamine solution from the strong base anion exchange resin with a second strong base anion exchange resin which has an affinity for weaker acid anions (c) measuring and recording the electrical conductance of the effluent solution from the first mentioned anion exchange resin (d) removing the first mentioned anion exchange resin from service when the conductance of the effluent alkanolamine solution from said resin indicates breakthrough of stronger acid anions in said effluent, (e) measuring and recording the electrical conductance of the effluent alkanolamine solution from the second mentioned anion exchange resin (f) removing the second mentioned anion exchange resin from service when the conductance of the effluent alkanolamine solution from said resin indicates break through of weaker acid anions in said effluent and (g) regenerating the strong base anion exchange resins.
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Publication, "Hydrocarbon Processing"--Mar. 1982 Issue, --Alkanoloamine Treating, K. F. Butwell et al.
Cummings Arthur L.
Keller Alfred E.
Severson Regina A.
Thompsen James C.
Veatch Fred C.
Conoco Inc.
Dawson Robert A.
Drodge Joseph
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