Iridium material for hydrothermal oxidation environments

Details Iridium material for hydrothermal oxidation environments Iridium material for hydrothermal oxidation environments

1995-02-02

1996-06-18

Hruskoci, Peter A.

Liquid purification or separation

Processes

Chemical treatment

210762, 422 7, 422240, 422241, C02F 1108

Patent

active

055274714

ABSTRACT:
A process for hydrothermal oxidation of combustible materials in which, during at least a part of the oxidation, corrosive material is present and makes contact with at least a portion of the apparatus over a contact area on the apparatus. At least a portion of the contact surface area comprises iridium, iridium oxide, an iridium alloy, or a base metal overlaid with an iridium coating. Iridium has been found to be highly resistant to environments encountered in the process of hydrothermal oxidation. Such environments typically contain greater than 50 mole percent water, together with oxygen, carbon dioxide, and a wide range of acids, bases and salts. Pressures are typically about 27.5 to about 1000 bar while temperatures range as high as 800.degree. C.

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Materials of Construction for Chemical Engineering Equipment, Chemical & Metall. Eng., Sep./1944, p. 105.

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