Hot corrosion/erosion testing of materials for application to advanced power conversion systems using coal-derived fuels. Task II: fluidized bed combustion. Final report, July 1, 1976-September 30, 1979

Technical Report · Thu Nov 01 04:00:00 EST 1979

DOI:https://doi.org/10.2172/5066567· OSTI ID:5066567

Nutkis, M. S.; Loughnane, M. D.; Ernst, M.; Bertrand, R. R.; Matulevicius, E. S.

The objective of this program was to provide an experimental basis for specifying materials for heat exchangers and gas turbines exposed to a pressurized fluidized bed combustor environment. A 1000 hour test was completed which: (1) exposed heat exchanger materials both within the fluidized bed and in the freeboard of a pressurized fluidized bed combustor at temperatures ranging from 1050 to 1600/sup 0/F for up to 1117 hours; and (2) provided the first successful long term exposure of turbine blade materials subjected to PFBC flue gas where the particulates were removed solely by cyclones. This report describes the operating conditions and major observations during this test period. Operating conditions varied sufficiently to significantly alter the particulate loading and mean particle diameter of the particulate entering the turbine section. This permitted several observations to be made: most of the turbine blade specimens appeared to be in satisfactory condition showing little, if any, erosion; particulate loading and/or particle size had a profound effect on the degree of deposition and erosion on the turbine blades; and in general, erosion was not visually apparent when 3 stages of conventional cyclones were used to clean the PFBC flue gas (however, upsets could cause marked erosion if the grain loading and particulate size increased only by small amounts). The heat exchanger specimens appeared to be in satisfactory condition both in bed and above the fluidized bed. These tests indicated the possibility that conventional cyclones alone may be sufficient to protect gas turbine blade materials exposed to PFBC flue gas. Also, there seems to be satisfactory heat exchanger materials for above-bed use and probably in-bed use.

• Research Organization: Exxon Research and Engineering Co., Linden, NJ (USA)
• DOE Contract Number: AC01-76ET10541
• OSTI ID: 5066567
• Report Number(s): FE-2452-39
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000 -- Coal
Lignite
& Peat-- Combustion
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
42 ENGINEERING
421000* -- Engineering-- Combustion Systems
ALLOYS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-MOLYBDENUM STEELS
CHROMIUM-NICKEL STEELS
CLADDING
COAL
COBALT ALLOYS
COMBUSTION
COMBUSTORS
CONCENTRATORS
CORROSION
CORROSION RESISTANT ALLOYS
CYCLONE SEPARATORS
DATA
DEPOSITION
DEPOSITS
ENERGY SOURCES
EQUIPMENT
EROSION
EXPERIMENTAL DATA
FLUE GAS
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
FOSSIL FUELS
FUELS
GAS TURBINES
GASEOUS WASTES
HASTELLOY X
HASTELLOYS
HAYNES 188 ALLOY
HEAT EXCHANGERS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCOLOY 800
INCOLOY ALLOYS
INERTIAL SEPARATORS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MACHINERY
MATERIALS
MATERIALS TESTING
MEDIUM PRESSURE
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NUMERICAL DATA
OXIDATION
PARTICLES
POLLUTION CONTROL EQUIPMENT
REMOVAL
STAINLESS STEEL-304
STAINLESS STEELS
STEELS
SURFACE COATING
TEST FACILITIES
TESTING
THERMOCHEMICAL PROCESSES
TUNGSTEN ALLOYS
TURBINE BLADES
TURBINES
TURBOMACHINERY
WASTES