An experimental study of smelt-water interaction in the recovery boiler dissolving tank
A laboratory apparatus was constructed to simulate the operating conditions of recovery boiler smelt dissolving tanks and used to systematically study the interaction between molten smelt droplets and water. Experiments were performed on synthetic smelt made of 80 wt% Na 2 CO 3 and 20 wt% NaCl at 80...
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ftunivtoronto:oai:localhost:1807/97451 2023-05-15T17:54:51+02:00 An experimental study of smelt-water interaction in the recovery boiler dissolving tank Jin, Eric Markus, Bussman Tran, Honghi 2015-06 http://hdl.handle.net/1807/97451 https://doi.org/10.32964/tj14.6.385 en_ca eng TAPPI Press Jin, E., Bussmann, M., & Tran, H. (2015). An experimental study of smelt-water interaction in the recovery boiler dissolving tank. TAPPI Journal, 14(6), 385–393. doi:10.32964/tj14.6.385 0734-1415 http://hdl.handle.net/1807/97451 doi:10.32964/tj14.6.385 Article 2015 ftunivtoronto https://doi.org/10.32964/tj14.6.385 2020-06-17T12:27:35Z A laboratory apparatus was constructed to simulate the operating conditions of recovery boiler smelt dissolving tanks and used to systematically study the interaction between molten smelt droplets and water. Experiments were performed on synthetic smelt made of 80 wt% Na 2 CO 3 and 20 wt% NaCl at 800°C, 900°C, and 1000°C. The results show that upon contact with water, some smelt droplets explode immediately and break into small pieces, some require a delay time to explode, and others solidify without exploding. The probability of explosion strongly depends on water temperature and to some extent, smelt temperature. At a given smelt temperature, there exists a water temperature range below which explosion always occurs (the lower critical water temperature) and above which there is no explosion (the upper critical water temperature). The lower critical water temperature decreases with increasing smelt temperature, while the upper critical water temperature remains the same at 82°C in all cases. Up to this upper critical water temperature, both the explosion delay time and explosion intensity increase with increasing water temperature. The data was used to construct a Smelt-Water Interaction Temperature (SWIT) diagram that can predict if a molten synthetic smelt droplet will explode in water at different smelt and water temperatures. This work was conducted as part of the research program on “Increasing Energy and Chemical Recovery Efficiency in the Kraft Process – III,” jointly supported by the Natural Sciences and Engineering Research Council of Canada (NSERC) and a consortium of the following companies: Andritz, AV Nackawic, Babcock & Wilcox, Boise, Carter Holt Harvey, Celulose Nipo-Brasileira, Clyde-Bergemann, DMI Peace River Pulp, Eldorado, ERCO Worldwide, Fibria, FP Innovations, International Paper, Irving Pulp & Paper, Kiln Flame Systems, Klabin, MeadWestvaco, Metso Power, StoraEnso Research, Suzano, Tembec, and Tolko Industries. The authors also wish to acknowledge Dr. Thomas M. Grace for his comments on the manuscript. Article in Journal/Newspaper Peace River University of Toronto: Research Repository T-Space Canada Eldorado ENVELOPE(-108.502,-108.502,59.550,59.550) Wilcox ENVELOPE(-66.933,-66.933,-67.949,-67.949) TAPPI Journal 14 6 385 393 |
institution |
Open Polar |
collection |
University of Toronto: Research Repository T-Space |
op_collection_id |
ftunivtoronto |
language |
English |
description |
A laboratory apparatus was constructed to simulate the operating conditions of recovery boiler smelt dissolving tanks and used to systematically study the interaction between molten smelt droplets and water. Experiments were performed on synthetic smelt made of 80 wt% Na 2 CO 3 and 20 wt% NaCl at 800°C, 900°C, and 1000°C. The results show that upon contact with water, some smelt droplets explode immediately and break into small pieces, some require a delay time to explode, and others solidify without exploding. The probability of explosion strongly depends on water temperature and to some extent, smelt temperature. At a given smelt temperature, there exists a water temperature range below which explosion always occurs (the lower critical water temperature) and above which there is no explosion (the upper critical water temperature). The lower critical water temperature decreases with increasing smelt temperature, while the upper critical water temperature remains the same at 82°C in all cases. Up to this upper critical water temperature, both the explosion delay time and explosion intensity increase with increasing water temperature. The data was used to construct a Smelt-Water Interaction Temperature (SWIT) diagram that can predict if a molten synthetic smelt droplet will explode in water at different smelt and water temperatures. This work was conducted as part of the research program on “Increasing Energy and Chemical Recovery Efficiency in the Kraft Process – III,” jointly supported by the Natural Sciences and Engineering Research Council of Canada (NSERC) and a consortium of the following companies: Andritz, AV Nackawic, Babcock & Wilcox, Boise, Carter Holt Harvey, Celulose Nipo-Brasileira, Clyde-Bergemann, DMI Peace River Pulp, Eldorado, ERCO Worldwide, Fibria, FP Innovations, International Paper, Irving Pulp & Paper, Kiln Flame Systems, Klabin, MeadWestvaco, Metso Power, StoraEnso Research, Suzano, Tembec, and Tolko Industries. The authors also wish to acknowledge Dr. Thomas M. Grace for his comments on the manuscript. |
format |
Article in Journal/Newspaper |
author |
Jin, Eric Markus, Bussman Tran, Honghi |
spellingShingle |
Jin, Eric Markus, Bussman Tran, Honghi An experimental study of smelt-water interaction in the recovery boiler dissolving tank |
author_facet |
Jin, Eric Markus, Bussman Tran, Honghi |
author_sort |
Jin, Eric |
title |
An experimental study of smelt-water interaction in the recovery boiler dissolving tank |
title_short |
An experimental study of smelt-water interaction in the recovery boiler dissolving tank |
title_full |
An experimental study of smelt-water interaction in the recovery boiler dissolving tank |
title_fullStr |
An experimental study of smelt-water interaction in the recovery boiler dissolving tank |
title_full_unstemmed |
An experimental study of smelt-water interaction in the recovery boiler dissolving tank |
title_sort |
experimental study of smelt-water interaction in the recovery boiler dissolving tank |
publisher |
TAPPI Press |
publishDate |
2015 |
url |
http://hdl.handle.net/1807/97451 https://doi.org/10.32964/tj14.6.385 |
long_lat |
ENVELOPE(-108.502,-108.502,59.550,59.550) ENVELOPE(-66.933,-66.933,-67.949,-67.949) |
geographic |
Canada Eldorado Wilcox |
geographic_facet |
Canada Eldorado Wilcox |
genre |
Peace River |
genre_facet |
Peace River |
op_relation |
Jin, E., Bussmann, M., & Tran, H. (2015). An experimental study of smelt-water interaction in the recovery boiler dissolving tank. TAPPI Journal, 14(6), 385–393. doi:10.32964/tj14.6.385 0734-1415 http://hdl.handle.net/1807/97451 doi:10.32964/tj14.6.385 |
op_doi |
https://doi.org/10.32964/tj14.6.385 |
container_title |
TAPPI Journal |
container_volume |
14 |
container_issue |
6 |
container_start_page |
385 |
op_container_end_page |
393 |
_version_ |
1766162710487105536 |