Paper machine dryer sections

Modern high-speed paper machine concepts utilize longer or total single-felting dryer section configurations. Excellent runnability at the beginning of the dryer section is a great challenge when machine speeds are continuously being increased. Due to the natural underpressure effect in the opening dryer cylinder nip, in particular, the web

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Breaks of the Web (Troubleshooting Guide)

Breaks of the paper web (Dry-end, Size press, Wet-end) BREAKS of the paper web can have various causes, many of which have little to do with wet-end additives. For instance, the drives of the paper machine may be unstable or poorly adjusted. Some detective work may be needed to determine why the paper web is breaking.

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Voith | Dryer section

In the dryer section, the remaining water is evaporated by the supply of heat energy. In this case the paper web is led over dryers that are heated from the inside by means of steam. At the end of the drying process, the paper has a residual moisture of approximately 2% to 9 % depending on the grade.

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Paper Machine Clothing, Second Edition

Paper Machine Clothing gives an introduction to pulp and papermaking technology and then covers the main processes of forming, pressing, and drying in detail. Design, manufacturing, testing, application, and service of paper machine fabrics for each machine section are explained in detail.

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(PDF) 35 Drying of Pulp and Paper - ResearchGate

The multicylin d er dryer section of a paper mach i ne consi s ts of a nu m ber (up to 70) of larg e, hollow, cast iro n o r stee l cyl i nder s o v e r wh i c h th e we b passe s .

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Paper Machine Failure Investigation: Inspection ...

In April 1989, four dryer cans in a vintage paper machine manufactured about 1914 by Pusey Jones Corporation failed. The investigation of the accident determined that the root cause of the failure was a torsional fatigue crack that initiated on the OD surface of one of the cans.

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GUIDELINES FOR Cleaning and Conditioning Paper Machine ...

Optimum felt and press section runnability depends on maintaining "like-new" felt characteristics for a longer period of time. This can only be accomplished with an effective conditioning program. The type and use of a felt conditioning system has a pro-found effect on the runnability of the felt and the press section of the paper machine.

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Voith | Paper machines

Today the One Platform concept is applied to all Voith paper machines. For every paper grade, we offer a standard concept that is then optimally adapted to the individual modules and components of the system. Perfect design, coordination and reliability of all secondary systems are all part of the concept.

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Modeling, Calibration and Control of a Paper Machine Dryer ...

1 Introduction The topic of this paper is modeling, model reduction, parameteroptimization andcontrol ofapapermachine drying section. The dryer section is the last part of the paper machine and consists of a large number of rotating steam heated cast iron cylinders. The moist paper is led around these cylinders and the latent heat

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3b Paper Machine Steam Systems Part2 - SlideShare

Dec 13, 2009· The dryer section Moist air (to heat recovery) Exhaust fan Hot air Paperboard Paperboard Air/steam battery Air supply fan Dryer hood 3. Dryer section air systems Moist air (to heat recovery) Exhaust fan Hot air Paperboard Paperboard Air/steam battery Air supply fan Dryer hood Temperature variable According to machine, paper type and quality

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Paper Dryer Cylinder In Paper Making Machine Dryer Section

At last, paper dehydration in the dryer section, there are still retain 5%-10% moisture in the end of dryer. As we all know, the dryer section is the largest consumption part in the whole paper making machine, therefore improving the dryer section performance is as important as equipped with high efficiency of fourdrinier part and press part.

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Paper Machine Dryer Sections - R-V Industries, Inc.

Benefit From R-V's Dryer Section Experience. R-V's paper mill dryer sections optimize your maintenance efficiency and sheet moisture profile. Our dryers are set apart from the competition by our ability to integrate different cylinder configurations and roll quantities to increase machine and maintenance efficiency.

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Paper Machine Dewatering and Cleaning Solutions – RunDry

Maximizing sheet dryness and cleanliness from the wire section to the dryer brings measurable cost savings such as notable improvement in the paper machine efficiency and reduces the dryer section energy consumption.

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High Efficiency Paper Machine Dryer Section - Beston Group

The paper machine dryer section is used to dry wet paper product. The paper making process is basically the dewatered process. Good performance paper dryer machine can remove water and get dry paper with high efficiency.

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Effect of operating parameters on the drying performance ...

The drying performance of multicylinder dryer section in a paper machine was investigated under various operating parameters: Inlet paper solid content (48–50%), inlet paper temperature (45–50°C), supply air temperature (100–90°C), and exhaust air humidity (75–85 g H 2 O/kg dry air). The variation in environmental conditions was also considered.

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Papermaking - Formation of paper sheet by machines ...

The dryer section of a conventional paper machine consists of from 40 to 70 steam-heated drying cylinders. After passing around the cylinders, the sheet is held in intimate contact with the heated surfaces by means of dryer felts. ... The introduction of half-tone and colour printing has created a strong demand for coated paper.

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Paper Machine Cleaning | Runtech Great Britain

Optimized forming section cleaning results in improved dewatering and reduced overall energy consumption. Well-handled dryer section cleaning can be seen in .

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Paper Machine System Diagram - TMEIC

Multi-layer paper machines and paper board machines include additional forming sections (one forming section for each layer of paper). Forming section drives have a high friction load due to the suction (normal forces) of the water through the wire mesh. This results in a high normal running load, but a low acceleration load. No Press Section

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ENERQUIN AIR - Runnability and Drying Technology

The concept of utilizing a single-felted section at the wet end of the paper machine stabilizes the sheet. This allows the weak sheet to be supported throughout the wet end of the dryer section until it gains strength. As speeds increases, the effect of the positive and negative nips combined with centrifugal forces caused the sheet to drop off ...

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Dryer Section - Bellmer

Drying paper efficiently with the TurboDryer drying section is easy. We take care to create paper and board drying sections exactly to the needs of your product. Our specialists design, customize and manufacture in Finland our drying sections to reduce energy consumption as much as possible.

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Voith | Paper machines

Today the One Platform concept is applied to all Voith paper machines. For every paper grade, we offer a standard concept that is then optimally adapted to the individual modules and components of the system. Perfect design, coordination and reliability of all secondary systems are all part of the concept.

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Paper Machine Dryer Hood Air Systems - YouTube

Jul 27, 2015· Visit https://goo.gl/yxR0t1 to view the full video and purchase access to our other Paper courses. Paper and board machine dryer hood air systems have two ma...

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Dryer for Paper Pulp Company, Manufacturing of paper ...

Dryer Section designed to optimize the drying rate, reducing the investment cost. M.S. Fabricated dryers up to 2.0 mt. Dia and 25 mm to 36 mm shell thickness and the width up to 5 mt. Dryer is suitable for 4 to 5 kg/ cm2 operating pressure. The dryers are mirror finished and the width up to 5 mt.

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Genetic Algorithm-Based Optimization of Steam Consumption ...

In paper dryer section of the paper machine, paper dehydration is small, but the steam consumption for the process of dehydration is very large, this steam consumption has a great influence to the total steam consumption of the whole papermaking process. A method optimization of the dryer section based on genetic algorithm is proposed to reduce the dryer section steam consumption, which can ...

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Paper Making Machine With High Productivity

Paper making machine is a set of machine that is used to manufacture all kinds of papers, such as toilet paper, tissue paper, A4 paper, napkin paper, etc. The machine mainly consists of three parts: net, squeezing, heating drying and so on.

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GUIDELINES FOR Cleaning and Conditioning Paper Machine ...

Optimum felt and press section runnability depends on maintaining "like-new" felt characteristics for a longer period of time. This can only be accomplished with an effective conditioning program. The type and use of a felt conditioning system has a pro-found effect on the runnability of the felt and the press section of the paper machine.

Get price

Paper machine - Wikipedia

The dryer section of the paper machine, as its name suggests, dries the paper by way of a series of internally steam-heated cylinders that evaporate the moisture. Calenders are used to make the paper surface extra smooth and glossy. In practice calender rolls are normally placed vertically in a stack.

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ENERQUIN AIR - Runnability and Drying Technology

The concept of utilizing a single-felted section at the wet end of the paper machine stabilizes the sheet. This allows the weak sheet to be supported throughout the wet end of the dryer section until it gains strength. As speeds increases, the effect of the positive and negative nips combined with centrifugal forces caused the sheet to drop off ...

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(PDF) Design equation for paper machine press sections

Water removal in the press section of paper board, and pulp machines has an important influence on machine efficiency and cost. A press section design equation, based on the decreasing ...

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Paper Machine System Diagram - TMEIC

Multi-layer paper machines and paper board machines include additional forming sections (one forming section for each layer of paper). Forming section drives have a high friction load due to the suction (normal forces) of the water through the wire mesh. This results in a high normal running load, but a low acceleration load. No Press Section

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Paper Machine Cleaning | Runtech Great Britain

Optimized forming section cleaning results in improved dewatering and reduced overall energy consumption. Well-handled dryer section cleaning can be seen in .

Get price

Paper machine dryer sections

Modern high-speed paper machine concepts utilize longer or total single-felting dryer section configurations. Excellent runnability at the beginning of the dryer section is a great challenge when machine speeds are continuously being increased. Due to the natural underpressure effect in the opening dryer cylinder nip, in particular, the web

Get price