Archived
This content is available here strictly for research, reference, and/or recordkeeping and as such it may not be fully accessible. If you work or study at University of Kentucky and would like to request an accessible version, please use the SensusAccess Document Converter.
Location
Lexington, Kentucky
Start Date
6-5-2026 10:30 AM
End Date
6-5-2026 11:00 AM
Description
This paper will describe various coal quality and combustion improvement facts and methods. Impact of fuel parameters like calorific value, ash, HGI, and volatile will be briefly covered. The main focus of this paper is on pulverizer performance and balancing combustion to lower carbon in fly ash. Pulverizers operating with larger than design coal particles tend to create an unbalanced pipe to pipe coal flow. This results in zones of low excess O2, even if average O2 settings are maintained. Impact on coal size and pipe balance of classifier settings and primary air flow will be covered. The importance of both mill testing and maintenance is stressed, and a discussion of the cost of ash disposal verse boiler performance costs will be estimated. Many operations use high primary air flow for many good reasons. Reducing particle size and balancing combustion can be observed when lowering primary air flow within design parameters. This can lower carbon in ash with only operational changes.
Document Type
Presentation
Archival?
Archival
Included in
Energy Systems Commons, Environmental Indicators and Impact Assessment Commons, Environmental Monitoring Commons, Mining Engineering Commons, Oil, Gas, and Energy Commons, Structural Materials Commons, Sustainability Commons
Tuning Boilers to Reduce Carbon in Fly Ash - Making Salable Ash
Lexington, Kentucky
This paper will describe various coal quality and combustion improvement facts and methods. Impact of fuel parameters like calorific value, ash, HGI, and volatile will be briefly covered. The main focus of this paper is on pulverizer performance and balancing combustion to lower carbon in fly ash. Pulverizers operating with larger than design coal particles tend to create an unbalanced pipe to pipe coal flow. This results in zones of low excess O2, even if average O2 settings are maintained. Impact on coal size and pipe balance of classifier settings and primary air flow will be covered. The importance of both mill testing and maintenance is stressed, and a discussion of the cost of ash disposal verse boiler performance costs will be estimated. Many operations use high primary air flow for many good reasons. Reducing particle size and balancing combustion can be observed when lowering primary air flow within design parameters. This can lower carbon in ash with only operational changes.
