Technical Support Document: Chemical Recovery Combustion Sources at Kraft andSoda Pulp Mills

摘要

This TSD presents the technical information and the analyses used in thedevelopment of the NESHAP for combustion processes in the chemical recovery area of kraft and soda pulp mills. The chemical recovery combustion processes included in this NESHAP are (1) recovery furnaces (including associated smelt dissolving tanks and black liquor oxidation systems) and (2) lime kilns. Chapter 2.0 describes the processes and equipment associated with the chemical recovery cycle at kraft and soda pulp mills, identifies the hazardous air pollutants (HAP's) emitted and the emission sources, and quantifies baseline HAP emissions. Chapter 3.0 describes the emission control techniques that can be used to reduce HAP emissions from chemical recovery combustion processes, including add-on control systems and equipment changes. Chapter 4.0 presents model plants and control and enhanced monitoring options for chemical recovery combustion processes. Chapter 5.0 discusses the environmental and energy impacts on the model process units from the application of the HAP control options presented in Chapter 4.0. Finally, Chapter 6.0 presents the model process unit control and enhanced monitoring costs for the application of the control options.