Control of trace metal emissions during coal combustion. Technical progress report, July 1, 1994--September 30, 1994
Emissions of toxic trace metals in the form of metal fumes or submicron particulates from a coal-fired combustion source have received greater environmental and regulatory concern over the past years. Current practice of controlling these emissions is to collect them at the cold-end of the process by air-pollution control devices (APCDS) such as electrostatic precipitators and baghouses. However, trace metal fumes may not always be effectively collected by these devices because the formed fumes are extremely small. The proposed research is to explore the opportunities for improved control of toxic trace metal emissions, alternatively, at the hot-end of the coal combustion process, i.e., in the combustion chamber. The technology proposed is to prevent the metal fumes from forming during the process. Specifically, the technology is to employ suitable sorbents to (1) reduce the amount of metal volatilization during combustion and (2) capture volatilized metal vapors. The objectives of the project are to demonstrate the technology and to characterize the metal capture process during coal combustion in a fluidized bed combustor. Specifically, the following progress has been made during this performance period from July 1, 1994 through September 30, 1994: (1) Literature Survey - Pertinent literature related to the project has been thoroughly surveyed and efforts have been devoted to collect them; (2) Experimental Set-up - A fluidized bed combustor has been set-up for the proposed coal combustion experiments; (3) Personnel Training - Students have been trained to operate the fluidized bed combustor and the Perkin Elmer Model 2100 Atomic Absorption Spectrophotometer for metal measurement; (4) Coal Sample Ordering - Several representative coal samples have been ordered and received from the DOE Coal Sample Bank managed by the Pennsylvania State University.
- Research Organization:
- Lamar Univ., Beaumont, TX (United States). Dept. of Chemical Engineering
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-94PC94221
- OSTI ID:
- 10106272
- Report Number(s):
- DOE/PC/94221-T1; ON: DE95004307; TRN: 95:000667
- Resource Relation:
- Other Information: PBD: Oct 1994
- Country of Publication:
- United States
- Language:
- English
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