Sorbent preparation/modification/additives. Final report, September 1, 1992--November 30, 1993
- Ohio Univ., Athens, OH (United States)
Sorbent preparation techniques used today have generally been adapted from techniques traditionally used by the lime industry. Traditional dry hydration and slaking processes have been optimized to produce materials intended for use in the building industry. These preparation techniques should be examined with an eye to optimization of properties important to the SO{sub 2} capture process. The study of calcium-based sorbents for sulfur dioxide capture is complicated by two factors: (1) little is known about the chemical mechanisms by which the standard sorbent preparation and enhancement techniques work, and (2) a sorbent preparation technique that produces a calcium-based sorbent that enjoys enhanced calcium utilization in one regime of operation [flame zone (>2400 F), in-furnace (1600--2400 F), economizer (800--1100 F), after air preheater (<350 F)] may not produce a sorbent that enjoys enhanced calcium utilization in the other reaction zones. Again, an in-depth understanding of the mechanism of sorbent enhancement is necessary if a systematic approach to sorbent development is to be used. As a long-term goal, an experimental program is being carried out for the purpose of (1) defining the effects of slaking conditions on the properties of calcium-based sorbents, (2) determining how the parent limestone properties of calcium-based sorbents, and (3) elucidating the mechanism(s) relating to the activity of various dry sorbent additives. An appendix contains a one-dimensional duct injection model with modifications to handle the sodium additives.
- Research Organization:
- Ohio Coal Development Office, Columbus, OH (United States)
- Sponsoring Organization:
- Ohio State Government, Columbus, OH (United States)
- OSTI ID:
- 10146647
- Report Number(s):
- OCDO--94010907; ON: TI94010907; CNN: Grant CDO/R-87-2C/B
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010800
014000
ADSORBENTS
CALCIUM CARBONATES
CALCIUM CHLORIDES
CALCIUM HYDROXIDES
CALCIUM OXIDES
CHEMICAL ACTIVATION
CHEMICAL PREPARATION
COMBUSTION
COMPUTER PROGRAM DOCUMENTATION
DESULFURIZATION
EXPERIMENTAL DATA
PROGRESS REPORT
SODIUM CARBONATES
SODIUM CHLORIDES
SODIUM HYDROXIDES
SORBENT INJECTION PROCESSES
SULFIDATION
WASTE MANAGEMENT