• On suction box dewatering mechanisms

    study, vacuum pumping accounted for about 17 % of the total electrical energy consumption on a paper machine (7 TWh/a). About one third of this energy was used in the wire section, with the couch roll and suction boxes as the main consumers of energy, see Figure 4. Figure 4. Electrical energy consumption for the vacuum pumping of a paper machine

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  • Vacuum forming - Wikipedia

    Vacuum forming is a simplified version of thermoforming, where a sheet of plastic is heated to a forming temperature, stretched onto a single-surface mold, and forced against the mold by a vacuum.This process can be used to form plastic into permanent objects such as turnpike signs and protective covers. Normally draft angles are present in the design of the mold (a recommended minimum of 3 ...

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  • Vacuum system design for dewatering press fabrics | .

    Vacuum system design for dewatering press fabrics. The design of a vacuum system for a felt conditioning system starts on the paper machine at the uhle box. To properly size a uhle box the maximum speed that the paper machine will run must be known first.

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  • PAPERMAKING - Pulp and Paper Technical Association of Canada

    1.1 Approach Flow System The forming process is preceded by an approach flow system that receives the aqueous ... strong enough to be transferred to the press felt and the pressing process. The design of the forming fabric mesh itself must be considered along with the drainage ... dewatering capacity of a paper machine by draining water from ...

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  • 8 Paper Machine Troubleshooting - AstenJohnson

    Paper Machine Clothing · Second Edition | 247 This chapter includes troubleshooting guides for the forming, pressing, and drying sections of the paper machine. Although it is difficult to list all possible causes for all machine types, these lists can be used to provide guidance in .

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  • PROCESS DESIGN OF DRYERS (PROJECT STANDARDS AND ...

    PROCESS DESIGN OF DRYERS (PROJECT STANDARDS AND SPECIFICATIONS) Page 2 of 48 Rev: 01 April 2011 SCOPE This Project Standards and Specifications is intended to cover minimum requirements for process design of dryers used in oil, gas, and petrochemical process plants. Although, as a common practice, dryers are seldom designed by the users, but

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  • Chapter 3: Review of Basic Vacuum Calculations

    Vacuum technology is based upon the creation of an environment in which a process (thin film deposition, electron beam welding, etc.) can be carried out. This normally implies that one remove air from a system to some acceptable sub atmospheric pressure by the use of some type of vacuum pumping equipment.

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  • Paper production process | Fefco

    The stock passes through one or two headboxes onto the paper machine. The paper web is formed from the head box onto the wire and dewatered through the wire primarily by the action of gravity and suction/vacuum. Further dewatering by mechanical means takes place in the press section where water is taken out of the sheet by pressing between felts.

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  • Paper Machine Thermocompressor Steam Systems

    Paper Machine Dryers Series Includes 8 courses for $299/year. Paper Library ... Identify and describe steam and condensate flows in a typical thermocompressor steam system; ... Therefore it controls the creation of the vacuum and the amount of flash and blow through steam that is pulled into the thermocompressor.

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  • How is Paper Made? A Step-By-Step Guide to Our .

    Our paper machines remove water from the fibre solution. At the start of the papermaking process, the solution comprises of roughly 1% fibre and 99% water. Diluting the paper fibres this way allows us to make thin, uniform paper. Step 3: Wire section. At the wet end of the paper machine sits the headbox, which distributes a uniform jet of ...

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About us

Founded in 1982, Dekelon Paper Making Machinery Co.,Ltd. has always striven to meet and exceed customer expectations and continue to update and improve...

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