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Risk assessment of potential gas odorants for the storage process

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Abstract

1-pentyne and 2-hexyne were assessed as replacements for sulphur-bearing odorants in fuel gases, particularly in the view of thermal risks associated with the storage of sulphur-bearing odorants. Both the alkynes were inactive when heated under pressurised nitrogen, but their exothermic behaviour and pressure profiles were found to change when heated in contact with pressurised air. The pressure profiles were considered based on the consumption of oxygen. The exothermic behaviours of 1-pentyne and 2-hexyne were compared both before and after the storage process using differential scanning calorimetry. While both species showed two exothermic peaks before storage, the thermal and pressure load applied during the storage process increased the heat released at low temperatures. Storage under pressurised air influenced the stability of the both the species as well as their exothermic behaviour. The results will help in the use of these odorants and safe handling of fuels containing them.

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Acknowledgements

This study was supported by the Ministry of Economy, Trade and Industry Agency of Natural Resources and Energy.

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Authors and Affiliations

  1. Graduate School of Yokohama National University, 79-5 Tokiwadai Hodogaya ward, Yokohama City, Kanagawa, 240-8501, Japan

    Mieko Kumasaki & Yasushi Oka

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  1. Mieko Kumasaki
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  2. Yasushi Oka
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Correspondence to Mieko Kumasaki.

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Kumasaki, M., Oka, Y. Risk assessment of potential gas odorants for the storage process. J Therm Anal Calorim 126, 1757–1762 (2016). https://doi.org/10.1007/s10973-016-5742-x

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  • DOI: https://doi.org/10.1007/s10973-016-5742-x

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