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Monochloramine Chemistry for Biological Control, PaperCon 2010 Conference
Monochloramine Chemistry for Biological Control, PaperCon 2010 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
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 Operations Course
One of TAPPI's highest rated, longest running events! You'll learn ways to improve pulp production efficiency, minimize operating costs and reduce environmental impact. This course is designed for pulp mill operations personnel.
News
New Technology for Corrugated
This article is excerpted from a feature in the most recent issue of Paper360° and is being shared here for AOTC readers who may have missed it. Access the complete July/August issue to read the full article and much more.
Fundamentals of the Ozone/Methanol Bleaching Process, 1996 Pulping Conference Proceedings
Fundamentals of the Ozone/Methanol Bleaching Process, 1996 Pulping Conference Proceedings
Introducing TAPPI’s Newest Directors
Leaders from Graphic Packaging, and Solenis join fellow Directors
Journal articles
Magazine articles
Temperature profile measurement applications of moving webs and roll structures with intelligent roll embedded sensor technology
ABSTRACT: An intelligent roll for sheet and roll cover temperature profiles is a mechatronic system consisting of a roll in a web handling machine that is also used as a transducer for sensing cross-machine direction (CD) profiles. The embedded temperature sensor strips are mounted under or inside the roll cover, covering the full width of the roll’s cross-dimensional length. The sensor system offers new opportunities for online temperature measurement through exceptional sensitivity and resolution, without adding external measurement devices. The measurement is contacting, making it free from various disturbances affecting non-contacting temperature measurements, and it can show the roll cover’s internal temperatures. This helps create applications that have been impossible with traditional technology, with opportunities for process control and condition monitoring. An application used for process analysis services without adding a roll cover is made with “iRoll Portable Temperature” by mounting the sensor on the shell in a helical arrangement with special taping. The iRoll Temperature sensors are used for various purposes, depending on the application. The two main targets are the online temperature profile measurement of the moving web and the monitoring of the roll covers’ internal temperatures. The online sheet temperature profile has its main utilization in optimizing moisture profiles and drying processes. This enables the removal of speed and runnability bottlenecks by detecting inadequate drying capacity across the sheet CD width, the monitoring condition of the drying equipment, the optimization of drying energy consumption, the prevention of unnecessary over-drying, the optimization of the float drying of coating colors, and the detection of reasons for moisture profile errors. This paper describes this novel technology and its use cases in the paper, board, and tissue industry, but the application can be extended to pulp drying and industries outside pulp and paper, such as the converting and manufacture of plastic films.
Journal articles
Magazine articles
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.
Benefits of a Vendor/Customer Partnership in Improving White Water Chemistry, 1993 Nonwovens Conference Proceedings
Benefits of a Vendor/Customer Partnership in Improving White Water Chemistry, 1993 Nonwovens Conference Proceedings