Alkali metal vapor removal from a pressurized fluidized-bed combustor process stream: Annual report, October 1985-September 1986
A laboratory-scale pressurized fluidized-bed coal combustor (PFBC)/ alkali sorber was used (1) to measure the alkali vapor (Na and K) concentration in a PFBC process stream on a real-time on-line basis and (2) to demonstrate simultaneously the granular-bed sorber concept for the removal of alkali vapors from a hot PFBC process stream. An Ames alkali analyzer was used as an on-line, real-time monitor. A batch-type alkali and particulate sampling train (APST) was also installed as a backup for the analysis of both alkali vapor and particulate loading in the gas stream. Three test series of the PFBC/alkali sorber unit were run with Pittsburgh Sewickley coal and Tymochtee dolomite at an average bed temperature ranging from 900 to 925/degree/C and a system pressure of 9 atm absolute. In all three test series, NaCl vapor was injected into the sorber unit to provide about 580 ppbW in the PFBC process stream. In all three test series, the injected NaCl vapor was not detected by both the Ames alkali analyzer and the APST. It was significantly captured by the fly ash. The high-temperature stainless-steel sampling line could also be a sink for the NaCl vapor. 24 refs., 21 figs., 14 tabs.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6916991
- Report Number(s):
- ANL/FE-88-3; ON: DE88013966
- Resource Relation:
- Other Information: Paper copy only, copy does not permit microfiche production
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
ALKALI METALS
REMOVAL
ALUMINIUM OXIDES
SORPTIVE PROPERTIES
FIBERS
FLUIDIZED-BED COMBUSTION
SILICON CARBIDES
SILICON OXIDES
COMPARATIVE EVALUATIONS
DESIGN
FLY ASH
PARTICULATES
POTASSIUM
PROGRESS REPORT
SODIUM
SODIUM CHLORIDES
VAPORS
AEROSOL WASTES
ALKALI METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ASHES
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
COMBUSTION
DOCUMENT TYPES
ELEMENTS
FLUIDS
GASES
HALIDES
HALOGEN COMPOUNDS
METALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLES
RESIDUES
SILICON COMPOUNDS
SODIUM COMPOUNDS
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
WASTES
014000* - Coal
Lignite
& Peat- Combustion
360603 - Materials- Properties