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Title: Trace metal capture by various sorbents during fluidized bed coal combustion

Abstract

Toxic trace metallic elements such as arsenic, beryllium, cadmium, chromium, cobalt, lead, manganese, mercury, nickel, and selenium are usually contained in coal in various forms and trace amounts. These metals will either stay in the ash or be vaporized during high temperature combustion. Portions of the vaporized metals may eventually be emitted from a combustion system in the form of metal fumes or particulates with diameters less than 1 micron, which are potentially hazardous to the environment. Current practice of controlling trace metal emissions during coal combustion employs conventional air pollution control devices (APCDs), such as electrostatic precipitators and baghouses, to collect fly ash and metal fumes. The control may not always be effective on metal fumes due to their extremely fine sizes. This study is to explore the opportunities for improved control of toxic trace metal emissions from coal-fired combustion systems. Specifically, the technology proposed is to employ suitable sorbents to reduce the amount of metal volatilization and capture volatilized metal vapors during fluidized bed coal combustion. The objective of the study was to investigate experimentally and theoretically the metal capture process.

Authors:
; ;  [1]
  1. Lamar Univ., Beaumont, TX (United States)
Publication Date:
OSTI Identifier:
420509
Report Number(s):
CONF-960807-
Journal ID: ACFPAI; ISSN 0569-3772; TRN: 97:000002-0010
Resource Type:
Journal Article
Journal Name:
Preprints of Papers, American Chemical Society, Division of Fuel Chemistry
Additional Journal Information:
Journal Volume: 41; Journal Issue: 3; Conference: 212. national meeting of the American Chemical Society (ACS), Orlando, FL (United States), 25-30 Aug 1996; Other Information: PBD: 1996
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; BITUMINOUS COAL; FLUIDIZED-BED COMBUSTION; CHEMICAL ANALYSIS; LIMESTONE; SORPTIVE PROPERTIES; BAUXITE; ZEOLITES; TRACE AMOUNTS; AIR POLLUTION CONTROL; FLY ASH; MERCURY; METALS; WOOD

Citation Formats

Ho, T C, Ghebremeskel, A N, and Hopper, J R. Trace metal capture by various sorbents during fluidized bed coal combustion. United States: N. p., 1996. Web.
Ho, T C, Ghebremeskel, A N, & Hopper, J R. Trace metal capture by various sorbents during fluidized bed coal combustion. United States.
Ho, T C, Ghebremeskel, A N, and Hopper, J R. 1996. "Trace metal capture by various sorbents during fluidized bed coal combustion". United States.
@article{osti_420509,
title = {Trace metal capture by various sorbents during fluidized bed coal combustion},
author = {Ho, T C and Ghebremeskel, A N and Hopper, J R},
abstractNote = {Toxic trace metallic elements such as arsenic, beryllium, cadmium, chromium, cobalt, lead, manganese, mercury, nickel, and selenium are usually contained in coal in various forms and trace amounts. These metals will either stay in the ash or be vaporized during high temperature combustion. Portions of the vaporized metals may eventually be emitted from a combustion system in the form of metal fumes or particulates with diameters less than 1 micron, which are potentially hazardous to the environment. Current practice of controlling trace metal emissions during coal combustion employs conventional air pollution control devices (APCDs), such as electrostatic precipitators and baghouses, to collect fly ash and metal fumes. The control may not always be effective on metal fumes due to their extremely fine sizes. This study is to explore the opportunities for improved control of toxic trace metal emissions from coal-fired combustion systems. Specifically, the technology proposed is to employ suitable sorbents to reduce the amount of metal volatilization and capture volatilized metal vapors during fluidized bed coal combustion. The objective of the study was to investigate experimentally and theoretically the metal capture process.},
doi = {},
url = {https://www.osti.gov/biblio/420509}, journal = {Preprints of Papers, American Chemical Society, Division of Fuel Chemistry},
number = 3,
volume = 41,
place = {United States},
year = {Tue Dec 31 00:00:00 EST 1996},
month = {Tue Dec 31 00:00:00 EST 1996}
}