Boiler flue gas cleaning by liquefaction
Conference
·
OSTI ID:171613
- Abdelmalek & Associates, Inc., Ballwin, MO (United States)
A flue gas stream emitting from a boiler after removing the flyash and fine particulate matter is cooled in a reversible condensing heat exchanger to drop its temperature from approximately 270{degrees}F to near ambient temperature and to preheat a combustion air stream to approach the flue gas entering temperature. Sensible and latent beat from the flue gas stream is recovered by the combustion air stream causing condensation of acidic water vapor and removal of hazardous trace metals vapors. The cooled flue gases then undergo steps of compression, cooling, expansion and heat exchanging to reach thermodynamic equilibrium conditions for liquefaction of SO{sub 2}, and CO{sub 2}. Expanded and cleaned flue gas stream is then diffused through a cooling tower structure to disburse the flue gases into the atmosphere. Liquefied SO{sub 2} and CO{sub 2} by-products are then removed for further processing and for possible manufacturing for a wide range of well known chemical products.
- Research Organization:
- Coal and Slurry Technology Association, Washington, DC (United States); USDOE Pittsburgh Energy Technology Center, PA (United States)
- OSTI ID:
- 171613
- Report Number(s):
- CONF-950313--; ON: TI96120245
- Country of Publication:
- United States
- Language:
- English
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