New Developments in Recovery Boiler Ignitor Systems, 2004 International Chemical Recovery Conference

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The economic need to establish reliable auxiliary fuel firing to support the efficient processing of black liquor is critical to all recovery boiler owner/operators. The task of creating stable and reliable ignition for these burners is provided by auxiliary fuel ignitors. In many circumstances, safety and insurance requirements have dictated that vendors supply ignitors with greater heat inputs in an effort to follow both BLRBAC and NFPA guidelines. Recently, an evolution of ignition systems has occurred that has propelled ignitors into the digital age. New ignitors can provide higher capacities and require less maintenance. Gone are the days of lighting off boilers with a burning mop head or calling in all of the available E&I support personnel to get the burners going one more time. Programmable processors with local and remote diagnostic capabilities are now available for spark ignitor and flame detection systems. Digital systems are being integrated with personal computers and DCS systems. Computer modeling, physical testing for fuel and air delivery systems along with listening to operator issues have built on established technologies that make today’s ignitors one of the most value added capital investments.