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Trace elements - emissions from coal combustion and gasification

Technical Report:

Abstract

This report reviews the origin of trace elements in coal and their partitioning through coal-fired combustion and gasification processes, and downstream pollution control equipment. The importance of coal utilization as a source of trace element emissions to the atmosphere is evaluated. Limits controlling atmospheric emissions of certain potentially toxic trace elements have been introduced in some countries. Currently little legislation applies directly to emissions from coal utilisation, but it is unlikely that this source will remain exempt from regulation in future. Flue gases exiting a coal-fired boiler or gasifier contain trace elements either bound to particles or as volatile substances in the gas phase. High efficiency electrostatic precipitators or fabric filters can reduce particulate emissions to low concentrations. Wet or dry flue gas desulphurisation systems reduce emissions of volatile elements by concentrating the elements from flue gases in solid or liquid streams. Low temperature scrubbers present in some gasification systems provide an effective method for removal of most trace elements from the gas streams. The installation of pollution control equipment to comply with legislation for particulate and sulphur emissions will thus incidentally reduce the release of trace elements to the atmosphere. The report includes studies of the distribution of trace  More>>
Publication Date:
Jul 01, 1992
Product Type:
Technical Report
Report Number:
IEACR-49
Reference Number:
CLA-92-101507; EDB-92-148022
Subject:
01 COAL, LIGNITE, AND PEAT; COAL; ELEMENTS; EMISSION; AIR POLLUTION; ASHES; COAL GASIFICATION; COMBUSTION; DEPOSITION; ELECTROSTATIC PRECIPITATORS; ENVIRONMENTAL EFFECTS; ENVIRONMENTAL TRANSPORT; FABRIC FILTERS; FLUE GAS; LAND POLLUTION; POLLUTION CONTROL EQUIPMENT; POLLUTION REGULATIONS; REVIEWS; SCRUBBERS; SOILS; TOXICITY; TRACE AMOUNTS; WATER POLLUTION; CARBONACEOUS MATERIALS; CHEMICAL REACTIONS; COMBUSTION PRODUCTS; DOCUMENT TYPES; ENERGY SOURCES; EQUIPMENT; FILTERS; FOSSIL FUELS; FUELS; GASEOUS WASTES; GASIFICATION; MASS TRANSFER; MATERIALS; OXIDATION; POLLUTION; REGULATIONS; RESIDUES; THERMOCHEMICAL PROCESSES; WASTES; 010900* - Coal, Lignite, & Peat- Environmental Aspects; 010600 - Coal, Lignite, & Peat- Properties & Composition; 014000 - Coal, Lignite, & Peat- Combustion; 010404 - Coal, Lignite, & Peat- Gasification
OSTI ID:
7181310
Research Organizations:
IEA Coal Research, London (United Kingdom)
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Other: ISBN: 92-9029-204-0
Availability:
IEA Coal Research, London (UK)
Submitting Site:
CLA
Size:
Pages: (111 p)
Announcement Date:
May 13, 2001

Technical Report:

Citation Formats

Clarke, L B, and Sloss, L L. Trace elements - emissions from coal combustion and gasification. United Kingdom: N. p., 1992. Web.
Clarke, L B, & Sloss, L L. Trace elements - emissions from coal combustion and gasification. United Kingdom.
Clarke, L B, and Sloss, L L. 1992. "Trace elements - emissions from coal combustion and gasification." United Kingdom.
@misc{etde_7181310,
title = {Trace elements - emissions from coal combustion and gasification}
author = {Clarke, L B, and Sloss, L L}
abstractNote = {This report reviews the origin of trace elements in coal and their partitioning through coal-fired combustion and gasification processes, and downstream pollution control equipment. The importance of coal utilization as a source of trace element emissions to the atmosphere is evaluated. Limits controlling atmospheric emissions of certain potentially toxic trace elements have been introduced in some countries. Currently little legislation applies directly to emissions from coal utilisation, but it is unlikely that this source will remain exempt from regulation in future. Flue gases exiting a coal-fired boiler or gasifier contain trace elements either bound to particles or as volatile substances in the gas phase. High efficiency electrostatic precipitators or fabric filters can reduce particulate emissions to low concentrations. Wet or dry flue gas desulphurisation systems reduce emissions of volatile elements by concentrating the elements from flue gases in solid or liquid streams. Low temperature scrubbers present in some gasification systems provide an effective method for removal of most trace elements from the gas streams. The installation of pollution control equipment to comply with legislation for particulate and sulphur emissions will thus incidentally reduce the release of trace elements to the atmosphere. The report includes studies of the distribution of trace elements in all output stream from coal-fired power stations, focusing on releases to the atmosphere. An integrated approach to pollution control should ensure that reductions in emission to the atmosphere do not result in increased pollution from solid or liquid wastes. 234 refs., 46 figs., 46 tabs.}
place = {United Kingdom}
year = {1992}
month = {Jul}
}