Innovative Solutions for a Challenging Biomass Fuel and Boiler Upgrade Project, 2005 Engineering, Pulping & Environmental Conference

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A recent biomass and non-condensable gas (NCG) firing addition, steam capacity increase and air system upgrade was successfully commissioned in a paper mill located in the southeastern United States. Boiler modifications included a new fuel handling and feeding system, an advanced overfire air system, a steam coil air heater (SCAH), overfire air (OFA) fan, sootblowers, and associated instrumentation and controls. A new venturi scrubber was installed and the induced draft (ID) fan was upgraded for the new conditions.

This paper discusses the upgrade and the results. Steaming capacity was increased by 19% while maintaining the original steam temperature. All performance guarantees and primary objectives were met and gaseous emissions are much lower than expected on a fuel with sawdust consistency. The mill operates continuously on biomass but has retained the existing stoker coal capabilities for future fuel flexibility.

Author: Strempek, J.R., Rose, A.J., Hiner, L.A., Glass, W.
Innovative Solutions for a Challenging Biomass Fuel and Boil
Innovative Solutions for a Challenging Biomass Fuel and Boiler Upgrade Project, 2005 Engineering, Pulping & Environmental Conference
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