Production and use of activated char for combined SO{sub 2}/NO{sub x} removal. [Quarterly] technical report, September 1--November 30, 1994
- Illinois State Geological Survey (United States)
- Illinois Univ., Urbana, IL (United States)
- Research Triangle Inst., Research Triangle Park, NC (United States)
- Illinois Clean Coal Inst., Carterville, IL (United States)
Carbon adsorbents have been shown to remove sulfur oxides from flue gas, and also serve as a catalyst for reduction of nitrogen oxides at temperatures between 80 and 150{degree}C. The overall objective of this project is to determine whether Illinois coal is a suitable feedstock for the production of activated char which could be used as a catalyst for combined SO{sub 2}/NO{sub x} removal, and to evaluate the potential application of the products in flue gas cleanup. During this quarter, further analyses of SO{sub 2} adsorption and TPD data revealed that SO{sub 2} adsorption was directly proportional to the number of unoccuppied (free) adsorption sites on the carbon surface. The SO{sub 2} capacity of a series of prepared IBC-102 chars and commercial activated carbons normalized with respect to the number of free sites varied by less than a factor of two, which indicated an excellent correlation. Based on these results, a mechanism for SO{sub 2} adsorption on carbon and conversion to H{sub 2}SO{sub 4} was proposed. To study NO{sub x} reduction by activated char, a packed bed flow through system was designed and constructed. A quadrupole mass spectrometer was installed to monitor the [NO] and [NO{sub 2}]; NO breakthrough curves were obtained for a commercial activated carbon at various [NO].
- Research Organization:
- Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); Illinois Clean Coal Inst., Carterville, IL (United States); Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States)
- DOE Contract Number:
- FC22-92PC92521
- OSTI ID:
- 45942
- Report Number(s):
- DOE/PC/92521--T214; ON: DE95008000
- Country of Publication:
- United States
- Language:
- English
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