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4 Drying - AstenJohnson

sections will help the dryer section run more efficiently and will consume less energy (steam). Since drying is a costly process (responsible for over 55% of the energy consumed on a paper machine), every effort should be made to remove as much water as possible from the sheet prior to the dryer section.

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Cast Iron Dryer Cylinder for Paper Machinery Dryer Section

Yankee cylinder(MG) for various paper machines as well as tissue machine. Yankee cylinder, MG cylinder, dryer cylinder, dryer. Diameter(OD): 3000mm, 3660mm Face length(F. L. ): 2000-6000mm Inlet steam pressure: 3Kg, 5Kg Hydraulic test pressure: 6Kg, 10Kg Shell Thickness: 42-45mm MOC: Cast iron Surface hardness: HB190-220

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Paper Machine Dryer Section Drying Measure, Dryer Cyinder ...

When the dryness of the paper is below 58% and over 58%, the shrinkage is not significant at this time, the dryer felt should be tightened to some extent. On the one hand, it increases the heat transfer efficiency of the dryer cylinder to the paper, and on the other hand, due to dryer felt is too loose caused by paper warpage and wrinkling; 2.

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Dryer Cylinders - Hergen Paper Machinery

With more than 30 years of experience in the manufacture of dryer cylinders, we are today one of the major suppliers in Latin America and worldwide. We produce Carbon Steel Drying Cylinders for small to large paper machines through a modern and rigorous process within the highest quality standards requirements, with ASME Certification and CE mark.

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Specialty Paper Machines | Voith

In the scope of rebuilds to paper machines with a single-tier dryer, which use suctioned rolls (known as dryer fabric suction rolls, DFSR), the DuoFoil can be installed over the DFSR in .

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Book 9 Papermaking Part 2, Drying

79 Multicylinder dryer and drying concepts 3.4.3 between press and drying sections .....95Closed draw 3.4.4 .....96Ropeless tail threading through drying section

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Specialty Paper Machines | Voith

In the scope of rebuilds to paper machines with a single-tier dryer, which use suctioned rolls (known as dryer fabric suction rolls, DFSR), the DuoFoil can be installed over the DFSR in .

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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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China Paper Machine Yankee Dryer Cylinder, Paper Machine ...

China Paper Machine Yankee Dryer Cylinder manufacturers - Select 2021 high quality Paper Machine Yankee Dryer Cylinder products in best price from certified Chinese Machine Machinery manufacturers, Machine Supplies suppliers, wholesalers and factory on Made-in-China

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US6032385A - Method for pocket ventilation and sheet ...

A dryer section in a papermaking machine has two reversing rolls to form a pocket between each pair of dryers in a dryer tier. The first reversing roll is a vacuum roll and the second reversing roll is a grooved roll. A blow box is disposed between the two rolls, the blow box provides suction for the grooved roll and provides vacuum which restrains a web on the dryer fabric as it travels ...

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Pocket ventilation system in dryer section of paper ...

Jul 07, 2015· Figure 2: Schematic of multi-cylinder paper drying system in a paper dryer section. Phase I: In this phase the paper sheet comes in contact with the cylinder but it is .

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Modeling, Calibration and Control of a Paper Machine .

To demonstrate the capabilities of DryLib, a dryer section model corresponding to that of PM7 located at the M-real mill, Husum, Sweden, has been devel-oped. The PM7 paper machine is a multi-cylinder ma-chine producing copy paper. The dryer section of the machine is divided into a pre-dryer and an after dryer

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Pocket ventilation system in dryer section of paper ...

Jul 07, 2015· Figure 2: Schematic of multi-cylinder paper drying system in a paper dryer section. Phase I: In this phase the paper sheet comes in contact with the cylinder but it is .

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Direct Gas Fired Cylinder Heaterfor Paper Drying

Objectives of the dryer section/2/ The objectives of the dryer section can be summarized as follows. l. The dryers must efficiently evaporate water with the least amount of drying equipment. Drying equipment is large and expensiv e. The dryer seetio n design must provide high evaporation rates to minimize the equipment requirements.

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Best Lubrication Practices for the Paper Industry

Also, paper machines for the production of various products include Yankee cylinders in the dryer section. Several meters in diameter, Yankee cylinders are heated by high-pressure steam that helps dry the paper web as it's pressed against the cylinder. In the dryer section, the enemy of bearings and lubricants is both heat and water.

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Paper Machine Dryer Section Drying Efficiency, Paper ...

Paper machine dryer section is for paper drying, there are two main aspects affecting paper machine drying efficiency: steam pressure and heat transfer coefficient. Paper Machine Drying Influencing Factors. Steam Pressure: In order to improve drying efficiency, the dryer temperature can be increased by increasing steam pressure, but the maximum ...

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Paper Machine Components - Can-Am Machinery

Class: Paper Machine Components » Dryers » Cans And Sections Manufacturer: Escher Wyss Part Number: 41420 Size: 110" Year Manufactured: 1980 Qty: 6 Description: Escher Wyss Manchester (6) Dryer Can Section, Rated 125 Psi At 450 F, 110" Working Face, 60" Diameter, 112.5" With Rope Ring, 115" Overall Width, Enclosed Bearings, With Rope System, Doctors, Felt Guides, Felt Rolls, Oil .

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Paper Machine Components - Can-Am Machinery

Class: Paper Machine Components » Dryers » Cans And Sections Manufacturer: Escher Wyss Part Number: 41420 Size: 110" Year Manufactured: 1980 Qty: 6 Description: Escher Wyss Manchester (6) Dryer Can Section, Rated 125 Psi At 450 F, 110" Working Face, 60" Diameter, 112.5" With Rope Ring, 115" Overall Width, Enclosed Bearings, With Rope System, Doctors, Felt Guides, Felt Rolls, Oil .

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Paper Machine Dryer Section Tips, Dryer Section Of Paper ...

And the traditional drying is commonly used in paper machine dryer section. Traditional Drying In Dryer Section. 1. Traditional drying usually use steam heating dryer cylinder, the temperature of paper sheet into dryer cylinder generally is about 4-30℃. The paper sheet is .

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Thermodynamic and Heat Transfer Evaluation of Pocket ...

the paper machine drying section based on the mass and energy balance relationships written for paper, steam, moisture and cylinder dryer [19-21]. The simulation models can be utilized to evaluate the energy efficiency and heat recovery performance in the drying section of paper machines. Sivill et al. have developed a

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Optimization for Energy Consumption in Drying Section of ...

Ghodbanan et al. (2017) used a non-linear programming optimisation method to optimise total steam and air consumption in the dryer section of multi-cylinder fluting paper machine, achieving a ...

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Dryer screen or clothes | pulp paper mill

Dec 06, 2012· When paper web exceed press section of a paper machine, it contains more than half of its weight is water. Most of this water of the paper web should be removed in the dryer section of the paper machine to ensure 4%-6% of final water content. The drying section is one of the most energy consuming parts (about 60%) of the paper machine.

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Paper Machine MG Cylinder - Yankee Cylinder Paper Machine ...

Paper Machine MG Cylinder A MG Cylinder is a Yankee cylinder, which is used to get Glaze on the surface of the paper. The paper sheet, in contact with the large hot highly polished dryer surface, for a long dwell time, will start to slip and plasticize the surface fibres, improving gloss & glazed properties on one side of the paper.

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Toscotec | Products - Paper&Board machines: Drying section

In the case of a new paper machine it is possible to use fewer dryers, which clearly results ( IMMAGINE ) in a reduced investment cost and space with reduced investment in the building. As a rebuilding tool when upgrading an existing paper machine, there is significant increased drying capacity when simply replacing the cast iron dryers without ...

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Drying concepts | Voith

Drying concepts consist of a defined number of steam-heated drying cylinders in direct contact with the wet paper as it leaves the press section, which finally leads to a curl-free paper. The wet paper after press section contains about 50% water. For water removal, thermal energy (steam) is applied, causing the water to evaporate as it passes ...

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D21F 5 - Dryer section of machines for making continuous ...

CN203559304U System for processing condensed water of paper machine drying cylinder 04/23/2014 CN103748283A Method and system for recovering heat in a drying section of a machine .

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Valmet dryer cylinders

a challenge at the dryer section and at the pre-dryer (a er sizing or coating) with certain paper and board grades. Valmet can offer a variety of cylinder covers for these positions. Valmet's Valmet Dryer Roll Cover DOH release coating has been developed specically for these demanding applications. Valmet Dryer .

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Pocket ventilation system in dryer section of paper ...

Jul 07, 2015· Modern paper machine are equipped with pocket ventilation (PV) box in dryer section through which hot air at a temperature about 100-1200c is passed into the pocket [7].

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There's New Life in the Old Dryer Section - Pulp and Paper ...

The 8-cylinder first dryer section was converted to a uni-run section. But the original rotary syphons, which were state-of-the-art at the time, had not been changed. The mill recognized that with speeds at 3310 fpm, uneven condensate removal, uneven CD dryer temperature profiles, sluggish moisture control and slow recovery times after a break ...

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Paper Machine System Diagram - TMEIC

Dryer Sections Typical dryer sections consist of quantity four to ten steel cans 5 to 6 ft (1.5 – 1.8 m) in diameter. These cans are filled with steam that evaporates water from the sheet as it passes around the cans. Typically, one drive powers all of the cans in a dryer section. The dryer section .

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