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Presentation Of A Dry Black Liquor Gasification Process With Direct Caustisization, 2004 International Chemical Recovery Conference
Presentation Of A Dry Black Liquor Gasification Process With Direct Caustisization, 2004 International Chemical Recovery Conference
Meeting the Reporting Challenges of the MACT Standards Defined Under 40CFR Part 63 Subpart S Throught the Use of an Event Logging/Reporting Software, 2002 Environmental Conference Proceedings
Meeting the Reporting Challenges of the MACT Standards Defined Under 40CFR Part 63 Subpart S Throught the Use of an Event Logging/Reporting Software, 2002 Environmental Conference Proceedings
Fundamentals of the Ozone/Methanol Bleaching Process, 1996 Pulping Conference Proceedings
Fundamentals of the Ozone/Methanol Bleaching Process, 1996 Pulping Conference Proceedings
Determination of Sulfate Ions in Kraft Black Liquors by a Turbidity Method, 2006 Engineering, Pulping, & Environmental Conference
Determination of Sulfate Ions in Kraft Black Liquors by a Turbidity Method, 2006 Engineering, Pulping, & Environmental Conference
Green Liquor Impregnation in Kraft Pulping - Effect of Different Inorganic Components, 2000 Pulping / Process & Product Quality Conference Proceedings
Green Liquor Impregnation in Kraft Pulping - Effect of Different Inorganic Components, 2000 Pulping / Process & Product Quality Conference Proceedings
Chloride Removal from The Kraft Recovery Boiler Dust Using the Precipitator Dust Purification (PDP) System, 1998 International Chemical Recovery Conference Proceedings
Chloride Removal from The Kraft Recovery Boiler Dust Using the Precipitator Dust Purification (PDP) System, 1998 International Chemical Recovery Conference Proceedings
Basic Engineering Design Data for Ozone/Solvent Bleaching of Alcell Derived Pulp, 1996 International Pulp Bleaching Conference Proceedings
Basic Engineering Design Data for Ozone/Solvent Bleaching of Alcell Derived Pulp, 1996 International Pulp Bleaching Conference Proceedings
Financial Benefits of Automating Maintenance Documentation, 1997 Process Control, Electrical & Info. Conference Proceedings
Financial Benefits of Automating Maintenance Documentation, 1997 Process Control, Electrical & Info. Conference Proceedings
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Kraft recovery boiler operation with splash plate and/or beer can nozzles — a case study, TAPPI Journal October 2021
ABSTRACT: In this work, we study a boiler experiencing upper furnace plugging and availability issues. To improve the situation and increase boiler availability, the liquor spray system was tuned/modified by testing different combinations of splash plate and beer can nozzles. While beer cans are typically used in smaller furnaces, in this work, we considered a furnace with a large floor area for the study. The tested cases included: 1) all splash plate nozzles (original operation), 2) all beer can nozzles, and 3) splash plate nozzles on front and back wall and beer cans nozzles on side walls. We found that operating according to Case 3 resulted in improved overall boiler operation as compared to the original condition of using splash plates only. Additionally, we carried out computational fluid dynamics (CFD) modeling of the three liquor spray cases to better understand the furnace behavior in detail for the tested cases. Model predictions show details of furnace combus-tion characteristics such as temperature, turbulence, gas flow pattern, carryover, and char bed behavior. Simulation using only the beer can nozzles resulted in a clear reduction of carryover. However, at the same time, the predicted lower furnace temperatures close to the char bed were in some locations very low, indicating unstable bed burning. Compared to the first two cases, the model predictions using a mixed setup of splash plate and beer can nozzles showed lower carryover, but without the excessive lowering of gas temperatures close to the char bed.