Iridium material for hydrothermal oxidation environments

Patent · Sun Dec 31 23:00:00 EST 1995

OSTI ID:870475

Hong, Glenn T ^[1]; Zilberstein, Vladimir A ^[2]

---

1. Tewksbury, MA
2. Brookline, MA

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.

• Assignee: Modar, Inc. (Natick, MA)
• Patent Number(s): US 5527471
• OSTI ID: 870475
• Country of Publication: United States
• Language: English

Related Subjects

/210/422/
1000
27
50
800
acids
alloy
apparatus
bar
base
base metal
bases
carbon
carbon dioxide
coating
combustible
combustible material
combustible materials
comprises
contact
contact surface
contain
corrosive
corrosive material
degree
dioxide
encountered
environments
found
highly
highly resistant
hydrothermal
hydrothermal oxidation
iridium
iridium alloy
makes
makes contact
material
materials
metal
mole
mole percent
overlaid
oxidation
oxidation environments
oxide
oxygen
percent
percent water
portion
pressures
process
range
resistant
salts
surface
temperatures
thermal oxidation
typically
typically contain
water
wide
wide range