Corrosion testing in a hazardous waste incinerator and waste heat boiler

Book · Sun Dec 31 04:00:00 EST 1995

OSTI ID:233993

Yanisch, V ^[1]

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1. 3M Co., St. Paul, MN (United States)

Materials of construction were evaluated for corrosion service, and for intermediate temperature and high temperature service in a hazardous waste incinerator and associated waste heat boiler. An aqueous corrosion test program was conducted in the waste heat boiler quench chamber. Test results indicate that alloys with nickel or cobalt, chromium, and molybdenum perform best. Some alloys have small additions of copper and tungsten. Alloy Nicrofer 5923 hMO performed best in these tests and contains low carbon, no iron or tungsten. Other good performing alloys are Haynes Alloy Ultimet, Inconel 686, Nicrofer 3127 hMO, Inconel 622, Haynes Alloy H9M, Haynes Alloy G 30, and Haynes Alloy C 22. This is based upon an average of 3 tests on each sample of 0.15 mm/yr. (6 MPY mils per year) or less corrosion. Intermediate temperature testing was conducted half way through the boiler at a temperature of about 480 C (900 F). Alloys such as HR 160, SAN 28, HR 120, Nicrofer 3228 NbCe, Incoloy 825, Incoloy 800 and Haynes Alloy 556 did very well in this test with corrosion rates of 0.033 mm/yr. (1.3 MPY) or less. In the 815 C (1500 F) environment located just prior to the boiler super heater section, tests show that alloys containing nickel and chromium plus cobalt, silicon or tungsten perform best. These include Duraloy Super 22H, RA85H, RA333, 310 S.S., Avesta 253MA and HR 160. Although these alloys are not as super as the authors would like them to be, they are adequate, with projected wastage rates of 0.83 to 1.48 mm/yr. (33 to 59 MPY).

• OSTI ID: 233993
• Report Number(s): CONF-950908--; ISBN 0-87170-539-7
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
36 MATERIALS SCIENCE
BROMINE
CARBURIZATION
CHEMICAL COMPOSITION
CHLORINE
COMBUSTION
CORROSION
EXPERIMENTAL DATA
FLUORINE
HEAT RESISTING ALLOYS
INDUSTRIAL WASTES
NITRIDATION
OXIDATION
PITTING CORROSION
SAMPLE PREPARATION
SULFIDATION
TEMPERATURE DEPENDENCE