Abstract:

GHG reduction, changing regulation and a focus on healthy work environments are creating the need for near zero gas emissions from mine air heating (MAH) systems. The direct fired style of heating system is used in cold climates of North America to condition the air before it is sent underground; but also produces CO, NOx (NO + NO2) emissions, exposing workers to respiratory irritants. The lower cost, higher efficiency, smaller foot print and ease of maintenance of the direct fired systems are preferred over the alternative of indirect fired systems.

This discussion will look at the key strategies and results for utilization of proven Best Available Control Technology (B.A.E.T.) with Combustion Systems Integration to achieve near zero gas emissions as applied at a Vale mine site. The discussion will look at flexibility and efficiency of application to existing Natural Gas, Propane and Produced Gas Direct Fired Systems; and solutions that can be readily applied to next generation heater houses.

Biography of the presenter: Cheryl Allen received her B.Sc in Mining Engineering from the South Dakota School of Mines and Technology in the United States and has held various mining engineering positions in Canada and the USA over the past 30+ years. She currently holds the role of Manager Ventilation Design & Tech Support for Vale North Atlantic Operations where she leads a team to develop the strategy, standards and guidelines, long to short range designs and execution support for ventilation projects and operating systems across Canada. She also continues to be the Subject Matter Expert for Vale with regard to ventilation matters. Cheryl has published in the areas of ventilation technology, design, practice and health and safety as well as speaking at conferences, symposia and a CIM Distinguished Lecturer. She has been involved with numerous research projects, is currently a Board Member of the Mining Diesel Emissions Council, participates on several standards committees and the Ventilation and Industrial Hygiene sub-committee of the Ontario Mining Legislative Review Committee.

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Mr. Mark Hannum