In the papermaking process, paper is dried on rotating, steam-heated, cast iron drying cylinders. Steam is supplied to each of these drying cylinders through a rotary joint and the steam that has condensed inside the dryers is removed by a syphon system that extends out through either the same rotary joint or a rotary joint on the other dryer journal.
Single-felt dryer sections are used to enhance the runnability of high-speed paper machines. In single-felt dryer sections, the web is supported by the dryer felt (i.e., fabric) in the draws between dryers. Fabric style, air handling equipment, and runnability devices are critical to efficient operation. Steam control in bottom single-felt dryers is also important.
Basics of Self-Supported Rotary Joint Installation on Steam-Heated Paper DryersKadant Inc.
Long service life of rotary joints and adjacent flexible hoses can be achieved by following basic installation guidelines. This is particularly important with self-supported rotary pressure joints that are used for paper dryers. General installation guidelines are provided.
Drive Power and Torque in Paper Machine DryersKadant Inc.
basic parameter in the design of a paper machine dryer drive system, whether it has an open gear, enclosed gear, or felt drive, is the drive power requirement. Previous work on the drive power for paper machine dryers covered a 1.5 meter diameter cylinder. This paper presents the results for both 1.5 and 1.83 meter diameter cylinders with and without dryer bars.
Troubleshooting Flooding of Paper DryersKadant Inc.
A paper dryer is heated by condensing steam inside the dryer cylinder. The condensate must be removed from the dryer at the same rate at which it is being formed or the dryer will “flood”. That is, condensate will accumulate inside the dryer. An excessive amount of condensate in the dryer will increase the power required to drive the dryer and reduce the rate of heat transfer from the dryer.
Dryer Condensing Loads Following Sheet BreaksKadant Inc.
Tests were conducted at the Kadant Johnson Research Center in Three Rivers, Michigan USA to directly measure the rate of condensate evacuation from dryers with different control strategies in response to a sheet break and recovery.
Single-felt dryer sections are used to enhance the runnability of high-speed paper machines. In single-felt dryer sections, the web is supported by the dryer felt (i.e., fabric) in the draws between dryers. Fabric style, air handling equipment, and runnability devices are critical to efficient operation. Steam control in bottom single-felt dryers is also important.
Basics of Self-Supported Rotary Joint Installation on Steam-Heated Paper DryersKadant Inc.
Long service life of rotary joints and adjacent flexible hoses can be achieved by following basic installation guidelines. This is particularly important with self-supported rotary pressure joints that are used for paper dryers. General installation guidelines are provided.
Drive Power and Torque in Paper Machine DryersKadant Inc.
basic parameter in the design of a paper machine dryer drive system, whether it has an open gear, enclosed gear, or felt drive, is the drive power requirement. Previous work on the drive power for paper machine dryers covered a 1.5 meter diameter cylinder. This paper presents the results for both 1.5 and 1.83 meter diameter cylinders with and without dryer bars.
Troubleshooting Flooding of Paper DryersKadant Inc.
A paper dryer is heated by condensing steam inside the dryer cylinder. The condensate must be removed from the dryer at the same rate at which it is being formed or the dryer will “flood”. That is, condensate will accumulate inside the dryer. An excessive amount of condensate in the dryer will increase the power required to drive the dryer and reduce the rate of heat transfer from the dryer.
Dryer Condensing Loads Following Sheet BreaksKadant Inc.
Tests were conducted at the Kadant Johnson Research Center in Three Rivers, Michigan USA to directly measure the rate of condensate evacuation from dryers with different control strategies in response to a sheet break and recovery.
Dryer Surface Temperature Response CharacteristicsKadant Inc.
This paper reviews data on thermal response of a dryer cylinder to changes in heat load (sheet break simulation) and to changes in dryer steam pressures. It also shows the improvements that are possible with the application of Turbulator® bars and advanced dryer section control.
DIY guidelines for optimization of wire vacuumDevesh Singhal
This presentation indicates how paper mills can collect data from their own machines and do the optimization to reduce energy consumption and get more dryness after the wire part.
Paper dryers are occasionally shut down for periods of time ranging from a few hours to many months. It important that proper procedures be followed when shutting down dryers to be sure that the process is complete and appropriate for the duration of the shutdown.
A nonuniform nip is nearly synonymous with a nonuniform product. Uneven nips are also a common cause of web
handling waste such as wrinkles, web breaks and other troubles. There are many causes for nonuniform nips.
However, all are readily detectable by using nip impression paper. Nip impression paper is an indispensable tool for
process and product troubleshooting as well as for nip roller system maintenance. This technique is good, fast and
cheap. There is no good substitute.
Vibration Characteristics in Cantilever Stationary SyphonsKadant Inc.
Most high-speed paper machine dryers operate with stationary cantilever syphons and dryer bars. Modern cantilever stationary syphons are rigidly mounted to the dryer bearing housings and they provide a reliable system of support. Dryer bars provide for high rates of heat transfer with excellent heat transfer and profile uniformity.
As the dryer pressure rating increases, the increase in steam temperature may not be sufficient to offset the increase in conductive resistance of the shell. In fact, it is possible for a dryer with a higher steam pressure rating that is operating at its rated pressure to have less drying capacity than a dryer with a lower steam pressure rating that is operating at its rated pressure.
Dryer doctors have a number of purposes in a paper machine dryer section: sheet shedding, dryer surface cleaning, threading, and air handling and control. Paper dryer doctors are often overlooked in the papermaking process, but they need proper attention to maintain efficient dryer operation.
Drying training Equipment Operation and control Nelson Izaguirre
No manufactured product plays a more significant role in every area of human activity than
paper and paper products. Its importance in everyday life is obvious from its use in
recording, storage and dissemination of information. Virtually all writing and printing is
done on paper. It is the most widely used wrapping and packaging material, and is
important for structural applications. The uses and applications for pulp and paper
products are virtually limitless. Apart from the products and services that it provides, the
paper and pulp industry is one of the major manufacturing industries in the world
providing employment for vast number of people and contribute to national economy.
The paper making process is essentially a very large dewatering operation where a diluted
solution of pulp suspension with less than 0.5% fibre solid is used. The major sections of a
paper machine consist of: forming section, press section and dryer section. In the forming
section, the fibres present in the diluted pulp and water slurry form paper web through
drainage by gravity and applied suction below the forming fabric. In the press section
additional water in removed by mechanical pressure applied through the nips of a series of
presses or rotating rolls and the wet web is consolidated in this section. Most of the
remaining water is evaporated and inter-fibre binding developed as the paper contacts a
series of steam heated cylinder in the dryer section. Water removal from the wet web to the
final moisture level between 6% and 7% is a critical step of papermaking. Majority of the
functional properties of paper are developed in this section.
In spite of its key role in papermaking, large equipment size, and large capital and operating
costs, drying is arguably the least understood papermaking operation. Books on
papermaking technology generally devote fewer pages to drying than other papermaking
operations such as forming, pressing or calendaring. A similar situation is found in
papermaking courses, in which drying occupies a shorter time than the proportion of space
it takes in a paper machine. Furthermore, a large portion of that time is devoted to the
description of the equipment by its suppliers rather than to its operation by the
papermakers.
Carbide Doctor Blades on Ceramic Press RollsKadant Inc.
Ceramic press rolls have become popular choices for improving papermaking efficiency and product quality. The proper selection and use of ceramic-tipped doctor blades and cleaning shower systems is critical in getting the highest performance from these rolls.
Heat Transfer Performance with Dryer BarsKadant Inc.
Dryer bars are used in paper machine drying cylinders to increase the rate of heat transfer and uniformity of drying. This paper has outlined an introduction to the technology of dryer bar design and presents the factors to be considered to achieve optimum performance.
Dryer Surface Temperature Response CharacteristicsKadant Inc.
This paper reviews data on thermal response of a dryer cylinder to changes in heat load (sheet break simulation) and to changes in dryer steam pressures. It also shows the improvements that are possible with the application of Turbulator® bars and advanced dryer section control.
DIY guidelines for optimization of wire vacuumDevesh Singhal
This presentation indicates how paper mills can collect data from their own machines and do the optimization to reduce energy consumption and get more dryness after the wire part.
Paper dryers are occasionally shut down for periods of time ranging from a few hours to many months. It important that proper procedures be followed when shutting down dryers to be sure that the process is complete and appropriate for the duration of the shutdown.
A nonuniform nip is nearly synonymous with a nonuniform product. Uneven nips are also a common cause of web
handling waste such as wrinkles, web breaks and other troubles. There are many causes for nonuniform nips.
However, all are readily detectable by using nip impression paper. Nip impression paper is an indispensable tool for
process and product troubleshooting as well as for nip roller system maintenance. This technique is good, fast and
cheap. There is no good substitute.
Vibration Characteristics in Cantilever Stationary SyphonsKadant Inc.
Most high-speed paper machine dryers operate with stationary cantilever syphons and dryer bars. Modern cantilever stationary syphons are rigidly mounted to the dryer bearing housings and they provide a reliable system of support. Dryer bars provide for high rates of heat transfer with excellent heat transfer and profile uniformity.
As the dryer pressure rating increases, the increase in steam temperature may not be sufficient to offset the increase in conductive resistance of the shell. In fact, it is possible for a dryer with a higher steam pressure rating that is operating at its rated pressure to have less drying capacity than a dryer with a lower steam pressure rating that is operating at its rated pressure.
Dryer doctors have a number of purposes in a paper machine dryer section: sheet shedding, dryer surface cleaning, threading, and air handling and control. Paper dryer doctors are often overlooked in the papermaking process, but they need proper attention to maintain efficient dryer operation.
Drying training Equipment Operation and control Nelson Izaguirre
No manufactured product plays a more significant role in every area of human activity than
paper and paper products. Its importance in everyday life is obvious from its use in
recording, storage and dissemination of information. Virtually all writing and printing is
done on paper. It is the most widely used wrapping and packaging material, and is
important for structural applications. The uses and applications for pulp and paper
products are virtually limitless. Apart from the products and services that it provides, the
paper and pulp industry is one of the major manufacturing industries in the world
providing employment for vast number of people and contribute to national economy.
The paper making process is essentially a very large dewatering operation where a diluted
solution of pulp suspension with less than 0.5% fibre solid is used. The major sections of a
paper machine consist of: forming section, press section and dryer section. In the forming
section, the fibres present in the diluted pulp and water slurry form paper web through
drainage by gravity and applied suction below the forming fabric. In the press section
additional water in removed by mechanical pressure applied through the nips of a series of
presses or rotating rolls and the wet web is consolidated in this section. Most of the
remaining water is evaporated and inter-fibre binding developed as the paper contacts a
series of steam heated cylinder in the dryer section. Water removal from the wet web to the
final moisture level between 6% and 7% is a critical step of papermaking. Majority of the
functional properties of paper are developed in this section.
In spite of its key role in papermaking, large equipment size, and large capital and operating
costs, drying is arguably the least understood papermaking operation. Books on
papermaking technology generally devote fewer pages to drying than other papermaking
operations such as forming, pressing or calendaring. A similar situation is found in
papermaking courses, in which drying occupies a shorter time than the proportion of space
it takes in a paper machine. Furthermore, a large portion of that time is devoted to the
description of the equipment by its suppliers rather than to its operation by the
papermakers.
Carbide Doctor Blades on Ceramic Press RollsKadant Inc.
Ceramic press rolls have become popular choices for improving papermaking efficiency and product quality. The proper selection and use of ceramic-tipped doctor blades and cleaning shower systems is critical in getting the highest performance from these rolls.
Heat Transfer Performance with Dryer BarsKadant Inc.
Dryer bars are used in paper machine drying cylinders to increase the rate of heat transfer and uniformity of drying. This paper has outlined an introduction to the technology of dryer bar design and presents the factors to be considered to achieve optimum performance.
5 benefits of regularly changing compressed air filter elementsAnand Kumar
Old and/or damaged air filter elements hamper the efficiency of air compressors. Read this blog to learn why these air filter elements need to be replaced regularly.
Conceptual design of transfer mould tool for rubber bumper springeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Effect of tip clearance on performance of a centrifugal compressoreSAT Journals
Abstract The centrifugal compressor is to study the effect of tip clearance on the performance characteristics and the wall static pressure for a different flow co-efficient. The method of testing the compressor is run at a constant speed at 2000rpm. The tip clearance is varied by using spacers. The volume flow rate is varied with the help of throttling device to conduct the performance test. The performance characteristic of the centrifugal compressor showing the variation of discharge pressure with volume flow rate is plotted. Obtaining the performance characteristics showing the variation of discharge pressure with volume flow rate for different tip clearance, viz. =2.2%, 4%, 6.1% and 7.9%. Measurement of periodic pressure at various tip clearance viz. =2.2%, 4%, 6.1% and 7.9%. For each tip clearance pressure measured in radial location of impeller at 6 positions for different flow co efficient values. Five flow coefficients viz., ф =0.40, =0.34 (both above design flow), =0.28 (near design flow), =0.21=0.18 (both below design flow) and four values of non-dimensional tip clearance viz., =2.2%, 4%, 6.1% and 7.9%, are chosen for experimental work. The objective of the research work is to measure the periodic variation static pressure on the casing over the rotor at different values of tip clearance and flow coefficients. With the availability of these data, it is possible to improve the tip clearance flow in centrifugal compressor.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
James Cropper Specialty papers unique experience producing luxury boards with...Kadant Inc.
Poly-cup grades are a very challenging raw material. James Cropper Speciality papers target was to recycle poly-cups, getting very clean fibers to replace virgin pulp in their luxury board. James Cropper selected Kadant to build their recycling line.
Recovering Thermal Energy with Water Jet HeatersKadant Inc.
The thermal energy in low-pressure steam can be recovered using shelland-tube heat exchangers, air-cooled condensers, and thermocompressors. An even more efficient way to recover the energy from low pressure steam is to use a Kadant Johnson water jet heater.
The primary raw materials used in the production of paper include pulp fiber, thermal and electrical energy, chemicals, and water. Increased profitability through cost savings can be realized through reductions in these key commodities.
Effectiveness of Paper Dryer Journal Insulating SleevesKadant Inc.
The concept of an improved dryer control system is to utilize modern control capabilities to provide supervisory control over the steam control and dryer drainage system. Paper dryer journals are often insulated with internal sleeves. These sleeves help to protect the dryer bearing inner races and maintain oil viscosity to provide long bearing life.
The concept of an improved dryer control system is to utilize modern control capabilities to provide supervisory control over the steam control and dryer drainage system.
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
24. Kadant Johnson is a global leader in the design, manufacture, and
service of dryer drainage systems, rotary joints, syphon systems,
and related equipment for the dryer section of the paper machine. For
more information about Kadant Johnson products and services, email
info@kadant.com or visit www.kadant.com.
Steam and Condensate Systems
Dryer Section Surveys
Dryer Management System® control software
Stationary Syphons
Rotating Syphons
Rotary Joints
Turbulator® Bars
Thermocompressors
Desuperheaters
Direct Steam Injection Heaters
Vortec™ Vacuum Generators
Sight Flow Indicators
Flexible Metal Hoses
Installations Services
Condensate Pumps