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Flare stacks on agricultural biogas plants - safety and operational requirements

Author

Listed:
  • Petr Trávníček

    (Department of Agricultural, Food and Environmental Engineering, Faculty of Agronomy, Mendel University in Brno, Brno, Czech Republic)

  • Luboš Kotek

    (Department of Production Systems and Virtual Reality, Faculty of Mechanical Engineering, Brno University of Technology, Brno, Czech Republic)

  • Vlastimil Nejtek

    (Department of Agricultural, Food and Environmental Engineering, Faculty of Agronomy, Mendel University in Brno, Brno, Czech Republic)

  • Tomáš Koutný

    (Department of Agricultural, Food and Environmental Engineering, Faculty of Agronomy, Mendel University in Brno, Brno, Czech Republic)

  • Petr Junga

    (Department of Agricultural, Food and Environmental Engineering, Faculty of Agronomy, Mendel University in Brno, Brno, Czech Republic)

  • Tomáš Vítěz

    (Department of Agricultural, Food and Environmental Engineering, Faculty of Agronomy, Mendel University in Brno, Brno, Czech Republic)

Abstract

The flare stack is a piece of equipment, which is used as a safety element at a biogas plant. In the case of a cogeneration unit or gas boiler failure, the biogas is redirected to the flare stack where it is burned. When the flare stack fails, the biogas releases to the atmosphere and an explosive mixture can form. The paper is focused on the description of the causes, which can cause the failure of the equipment. For this purpose, the individual components are described and, subsequently, the possibilities of their failure are discussed. In the next part of the work, the following scenario is considered: failure of the cogeneration unit and flare stack, the subsequent leakage of the biogas to the atmosphere. The calculation for determining the consequences of the biogas leakage is carried out. The size of the gaseous cloud and the explosion pressure in the case of a vapour cloud explosion are determined. The calculations were carried out by the software ALOHA (version 5.4.7).

Suggested Citation

  • Petr Trávníček & Luboš Kotek & Vlastimil Nejtek & Tomáš Koutný & Petr Junga & Tomáš Vítěz, 2019. "Flare stacks on agricultural biogas plants - safety and operational requirements," Research in Agricultural Engineering, Czech Academy of Agricultural Sciences, vol. 65(3), pages 98-104.
    • Handle: RePEc:caa:jnlrae:v:65:y:2019:i:3:id:1-2019-rae
    DOI: 10.17221/1/2019-RAE
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