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Sealing of welded-steel hopper bins for fumigation of stored grain with carbon dioxide
Authors: D.D. Mann. D.S. Jayas. N .D.G. Whitc and W.E. Muir
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Download file: https://library.csbe-scgab.ca/docs/journal/39/39_2_91_ocr.pdf
Published in: CBE Journal » CBE Journal Volume 39 (1997)
Download RAW file: https://library.csbe-scgab.ca/docs/journal/39/39_2_91_raw.pdf
DOI:
Description: Fumigation of grain with carbon dioxide (C02) requires the maintenance of high C02 concentrations (20 to 60% by volume in air) for extended periods (> 4 d). Grain storage structures currently used on Canadian farms are not airtight and should be sealed if they are to be used for fumigation with C02. Various sealing techniques were applied to two welded-steel hopper bins to improve their gas-tightness. Each sealing technique was tested by adding 136 kg of dry-ice pellets to a steel box connected to the empty bin by ABS piping. If the C02 displaced air, this would have created a C02 concentration of approximately 65% inside the empty bin. Carbon dioxide concentrations continually increased as the sealing improved, but never reached 65%. Uniformity of C02 within the bin in both the radial and vertical directions also improved as the sealing improved. Fumigating with C02 using this type of bin will be possible if either I) the length of exposure at the lower C02 concentration is increased, or 2) additional dry ice is added to the bin to compensate for leakage.
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Citation: D.D. Mann. D.S. Jayas. N .D.G. Whitc and W.E. Muir 1997. SEALING OF WELDED-STEEL HOPPER BINS FOR F MIGATION OF STORED GRAIN WITH CARBON DIOXIDE. Canadian Agricultural Engineering 39(2):91-97.
Volume: 39
Issue: 2
Pages -
Contributor:
Date: 1997
Technical field:
Conference name:
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Type: Text.Article
Format: PDF
Publication type:
Source:
Relation:
Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
DOI:
Description: Fumigation of grain with carbon dioxide (C02) requires the maintenance of high C02 concentrations (20 to 60% by volume in air) for extended periods (> 4 d). Grain storage structures currently used on Canadian farms are not airtight and should be sealed if they are to be used for fumigation with C02. Various sealing techniques were applied to two welded-steel hopper bins to improve their gas-tightness. Each sealing technique was tested by adding 136 kg of dry-ice pellets to a steel box connected to the empty bin by ABS piping. If the C02 displaced air, this would have created a C02 concentration of approximately 65% inside the empty bin. Carbon dioxide concentrations continually increased as the sealing improved, but never reached 65%. Uniformity of C02 within the bin in both the radial and vertical directions also improved as the sealing improved. Fumigating with C02 using this type of bin will be possible if either I) the length of exposure at the lower C02 concentration is increased, or 2) additional dry ice is added to the bin to compensate for leakage.
Keywords:
Résumé:
Mots-clés:
Citation: D.D. Mann. D.S. Jayas. N .D.G. Whitc and W.E. Muir 1997. SEALING OF WELDED-STEEL HOPPER BINS FOR F MIGATION OF STORED GRAIN WITH CARBON DIOXIDE. Canadian Agricultural Engineering 39(2):91-97.
Volume: 39
Issue: 2
Pages -
Contributor:
Date: 1997
Technical field:
Conference name:
Session name:
Other information:
Type: Text.Article
Format: PDF
Publication type:
Source:
Relation:
Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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