Factors affecting the electrical resistivity of kraft recovery boiler precipitator ash
The electrical resistivity of ash particles is an important parameter that determines the efficiency of electrostatic precipitators. This systematic study examines the resistivity of recovery boiler precipitator ash as a function of electrical field strength, time of exposure, particle composition,...
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Online Access: | http://hdl.handle.net/1807/97934 https://doi.org/10.32964/tj13.7.31 |
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ftunivtoronto:oai:localhost:1807/97934 2023-05-15T17:54:51+02:00 Factors affecting the electrical resistivity of kraft recovery boiler precipitator ash Sretenovic, Ivan Farkhondehkavaki, Masoumeh Kortschot, Mark Tran, Honghi 2014-07 http://hdl.handle.net/1807/97934 https://doi.org/10.32964/tj13.7.31 en_ca eng TAPPI Press Sretenovic, I., Farkhondehkavaki, M., Kortschot, M., & Tran, H. Tappi J, 13(7): (2014). 0734-1415 http://hdl.handle.net/1807/97934 doi:10.32964/tj13.7.31 Article 2014 ftunivtoronto https://doi.org/10.32964/tj13.7.31 2020-06-17T12:28:00Z The electrical resistivity of ash particles is an important parameter that determines the efficiency of electrostatic precipitators. This systematic study examines the resistivity of recovery boiler precipitator ash as a function of electrical field strength, time of exposure, particle composition, and gas composition and temperature. Synthetic ash and actual ash samples from several pulp mills are used. The results show that most ash samples tested had a resistivity between 109 and 1010 Ω·cm, but one of the samples had an unusually high resistivity, 1012 Ω·cm. The resistivity increases with temperature up to about 140°C, then decreases. At a given temperature, the resistivity decreases with increasing moisture and sulfur dioxide concentration in the gas. Resistivity also increases with an increase in chloride content in the ash, but is not affected by the carbonate, sulfate, and potassium contents. The results imply that recovery boilers burning liquors with high solids and high chloride contents produce ash with higher resistivity, making it more difficult for electrostatic precipitators to capture. This work was conducted as part of the Increasing Energy and Chemical Recovery Efficiency in the Kraft Process-II re-search program, jointly supported by the Natural Sciences and Engineering Research Council of Canada (NSERC) and a consortium of the following companies: Andritz, Babcock & Wilcox, Boise Paper, Carter Holt Harvey, Celulose Nipo-Brasileira, Clyde-Bergemann, DMI Peace River Pulp, Fibria, International Paper, Irving Pulp & Paper, Metso Power, Mead-Westvaco, StoraEnso Research, and Tembec. Article in Journal/Newspaper Peace River University of Toronto: Research Repository T-Space Canada Wilcox ENVELOPE(-66.933,-66.933,-67.949,-67.949) TAPPI Journal 13 7 31 39 |
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Open Polar |
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University of Toronto: Research Repository T-Space |
op_collection_id |
ftunivtoronto |
language |
English |
description |
The electrical resistivity of ash particles is an important parameter that determines the efficiency of electrostatic precipitators. This systematic study examines the resistivity of recovery boiler precipitator ash as a function of electrical field strength, time of exposure, particle composition, and gas composition and temperature. Synthetic ash and actual ash samples from several pulp mills are used. The results show that most ash samples tested had a resistivity between 109 and 1010 Ω·cm, but one of the samples had an unusually high resistivity, 1012 Ω·cm. The resistivity increases with temperature up to about 140°C, then decreases. At a given temperature, the resistivity decreases with increasing moisture and sulfur dioxide concentration in the gas. Resistivity also increases with an increase in chloride content in the ash, but is not affected by the carbonate, sulfate, and potassium contents. The results imply that recovery boilers burning liquors with high solids and high chloride contents produce ash with higher resistivity, making it more difficult for electrostatic precipitators to capture. This work was conducted as part of the Increasing Energy and Chemical Recovery Efficiency in the Kraft Process-II re-search program, jointly supported by the Natural Sciences and Engineering Research Council of Canada (NSERC) and a consortium of the following companies: Andritz, Babcock & Wilcox, Boise Paper, Carter Holt Harvey, Celulose Nipo-Brasileira, Clyde-Bergemann, DMI Peace River Pulp, Fibria, International Paper, Irving Pulp & Paper, Metso Power, Mead-Westvaco, StoraEnso Research, and Tembec. |
format |
Article in Journal/Newspaper |
author |
Sretenovic, Ivan Farkhondehkavaki, Masoumeh Kortschot, Mark Tran, Honghi |
spellingShingle |
Sretenovic, Ivan Farkhondehkavaki, Masoumeh Kortschot, Mark Tran, Honghi Factors affecting the electrical resistivity of kraft recovery boiler precipitator ash |
author_facet |
Sretenovic, Ivan Farkhondehkavaki, Masoumeh Kortschot, Mark Tran, Honghi |
author_sort |
Sretenovic, Ivan |
title |
Factors affecting the electrical resistivity of kraft recovery boiler precipitator ash |
title_short |
Factors affecting the electrical resistivity of kraft recovery boiler precipitator ash |
title_full |
Factors affecting the electrical resistivity of kraft recovery boiler precipitator ash |
title_fullStr |
Factors affecting the electrical resistivity of kraft recovery boiler precipitator ash |
title_full_unstemmed |
Factors affecting the electrical resistivity of kraft recovery boiler precipitator ash |
title_sort |
factors affecting the electrical resistivity of kraft recovery boiler precipitator ash |
publisher |
TAPPI Press |
publishDate |
2014 |
url |
http://hdl.handle.net/1807/97934 https://doi.org/10.32964/tj13.7.31 |
long_lat |
ENVELOPE(-66.933,-66.933,-67.949,-67.949) |
geographic |
Canada Wilcox |
geographic_facet |
Canada Wilcox |
genre |
Peace River |
genre_facet |
Peace River |
op_relation |
Sretenovic, I., Farkhondehkavaki, M., Kortschot, M., & Tran, H. Tappi J, 13(7): (2014). 0734-1415 http://hdl.handle.net/1807/97934 doi:10.32964/tj13.7.31 |
op_doi |
https://doi.org/10.32964/tj13.7.31 |
container_title |
TAPPI Journal |
container_volume |
13 |
container_issue |
7 |
container_start_page |
31 |
op_container_end_page |
39 |
_version_ |
1766162698732568576 |