TAPPI TIP 0416-25 2015 provides technical background and practical guidance on controlling nitrogen oxide (NOx) emissions from biomass and kraft recovery boilers used in the pulp and paper industry.
The paper explains NOx formation mechanisms, health and environmental impacts, regulatory considerations, and the operational factors that influence emissions. It evaluates combustion-based approaches such as lower excess air, overfire air staging, low-NOx burners, fuel switching, flue gas recirculation, reburning, water or steam injection, and fluidized-bed combustion.
It also discusses post-combustion treatment technologies, including selective non-catalytic reduction (SNCR), selective catalytic reduction (SCR), and oxidation or absorption processes. Technical considerations include achievable emissions reductions, boiler efficiency, carbon monoxide generation, ammonia handling, catalyst performance, corrosion, reagent costs, fuel flexibility, and retrofit requirements.
This PDF is intended for engineers, boiler operators, environmental professionals, plant managers, and other specialists evaluating NOx compliance strategies and emissions-control investments in pulp, paper, biomass, and chemical recovery operations.
Application Scope: Use for preliminary engineering evaluations, emissions-control planning, boiler operation and optimization, regulatory compliance assessments, technology selection, and training related to biomass-fired and kraft recovery boilers.
