Fate of chlorine-containing species in coal-fired MHD system
From pilot plant test measurements, equilibrium calculations and bench scale experiments, the fate of various chlorin-containing species in a coal-fired MHD system has been determined. Chlorine generally occurs in fuel in a form that is easily decomposed or vaporized during combustion. According to a CONOCO bulletin, some Illinois coals contain chlorine concentrations up to 0.65% and many US coals exhibit chlorine contents varying from 0.01% to about 0.5%. Depending upon the grade of the seed material,its chlorine content as KC1 or NaCl can vary from 0.05% to 1.5%. Potassium salts used as seed material in the MHD system are recovered and recycled for economic and environmental reasons. However, multiple recycling results in a potential problem of coal-derived chloride build-up in the MHD system. If such build-up of chlorine-containing species is not controlled below an acceptable level, potentially serious problems may be faced in the entire MHD system. - Also under the new Clean Air Act, emission of HCl (hydrochloric acid) gas/aerosol from a continuous source will have to be brought down from 17 to less than 10 tons/year.
- Research Organization:
- Tennessee Univ., Tullahoma, TN (United States). Space Inst.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC02-79ET10815
- OSTI ID:
- 10183746
- Report Number(s):
- DOE/ET/10815-195; CONF-921037-5; ON: DE93000786
- Resource Relation:
- Conference: 9. annual international Pittsburgh coal conference,Pittsburgh, PA (United States),12-16 Oct 1992; Other Information: PBD: [1992]
- Country of Publication:
- United States
- Language:
- English
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