Production and use of activated char for combined SO{sub 2}/NO{sub x} removal. Technical report, September 1--November 30, 1993

Technical Report · Fri Dec 31 04:00:00 EST 1993

DOI:https://doi.org/10.2172/10135071· OSTI ID:10135071

Lizzio, A A; DeBarr, J A; Rostam-Abadi, M ^[1]

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1. Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States). Geological Survey

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{degrees}C. The overall objective of this project is to determine whether Illinois coal is a suitable feed stock for the production of activated char which could be used as a catalyst for removal of SO{sub 2}/NO{sub x} from combustion flue gas, and to evaluate the potential application of the products in flue gas cleanup. Key production variables will be identified to help design and engineer activated char with the proper pore structure and surface chemistry. During this reporting period, a series of chats was prepared from an Illinois coal (IBC-102). A 48{times}100 mesh size fraction of IBC-102 coal was physically cleaned to reduce its ash content from 5.5 to 3.6%. The clean coal was pyrolyzed in a fluidized-bed reactor at 500, 700 and 900{degrees}C. The surface area and oxygen content of the char was varied either by oxidation in 10% O{sub 2} or by nitric acid treatment. Steam activation or chemical activation using potassium hydroxide was employed to enhance surface area development. Nitrogen BET surface areas of the chars ranged from 1 to 800 M{sup 2}/g.

• Research Organization: Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FC22-92PC92521
• OSTI ID: 10135071
• Report Number(s): DOE/PC/92521--T113; ON: DE94008407; BR: AV0100000/AV0102000
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200202
ACTIVATED CARBON
ADSORBENTS
AIR POLLUTION CONTROL
CHARS
CHEMICAL ACTIVATION
COAL
COAL PREPARATION
COMBINED SOXNOX PROCESSES
COMPARATIVE EVALUATIONS
DEASHING
FOSSIL-FUEL POWER PLANTS
NITROGEN OXIDES
NOXIOUS GAS AND PARTICULATE EMISSIONS
PROGRESS REPORT
PYROLYSIS
SULFUR DIOXIDE