Deoxygenation process

Liquid purification or separation – Processes – Ion exchange or selective sorption

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210669, C02F 900

Patent

active

045564922

ABSTRACT:
A deoxygenation process includes the steps of adding hydrazine to a liquid containing dissolved oxygen, passing the liquid through a bed of activated carbon to catalyze a reaction between the dissolved oxygen and hydrazine whereby carbon contaminants are added to the liquid, and removing the contaminants. In another embodiment, unreacted hydrazine that remains in the liquid following the catalysis is removed by passing the liquid through an ion exchange resin. In still another embodiment, an activated carbon-catalyzed deoxygenation process employing hydrazine is practiced on a mobile platform and the process further includes the steps of transporting the apparatus to a regenerating station for regeneration. The invention also includes apparatus for carrying out the process.

REFERENCES:
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patent: 4399098 (1983-08-01), Cuisia
"Guide to the Design of Secondary Systems and Their Components to Minimize Oxygen-Induced Corrosion", prepared by Bechtel Group, Inc., Mar. 1982, pp. 4-28 to 4-34.
"The use of Active Carbon with Hydrazine in the Treatment of Boiler Feed Water", F. R. Houghton, International Water Conference, Bournemouth, England, pp. 54-58.
"Use of Hydrazine in Feedwater for High-Pressure Boilers," by Camillo Zanchi, Il Calore, 1954, (English translation).
"Impiego Dell; Idrazina Nell'Acqua D'Alimento Delle Caldaie Ad Alta Pressione; by Camillo Zanchi; pp. 264 through 270 of Il Calore (1954), No. 6.
"Hydrazine as an Oxygen Scavenger", by S. R. M. Ellis, Chemical & Process Engineering, Feb. 1956, pp. 47-50.

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