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   What is the process of bleaching pulp?

   • The produced pulp is washed to recover cooking liquor (i.e. known as black liquor) and reduce the carryover of organic component in oxygen delignification unit. The pulp is then bleached with chlorine dioxide and hydrogen peroxide in a sequence of acidic and alkaline stages. The bleached pulp is dried with hot air before shipped to paper mills.

   Pulping Process - an overview | ScienceDirect Topics

   www.sciencedirect.com/topics/engineering/pulping-process

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   What is pulping process?

   • Pulping is the process where fibers are separated and treated to produce pulp. The wet pulp is then converted into paper at an integrated pulp and paper mill or is dried and transported from the pulp mill to a paper mill. Different pulping processes are used depending on the fiber material and the desired end product.

   Pulping Process - an overview | ScienceDirect Topics

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   What is the kraft pulping process?

   • The kraft pulping process is a complex and important method for producing pulp from wood chips or other lignocellulosic materials. The process involves cooking the wood in an alkaline solution to break down the lignin and separate the cellulose fibers, which are used to produce paper products.

   The Kraft Pulping Process: A Comprehensive Overview - CNBM

   paper-pulper.com/kraft-pulping-process-overview/

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   How does chemical pulping work?

   • In chemical pulping, the process breaks down the chemical structure of lignin and makes it soluble in the cooking liquor, allowing it to be washed from the cellulose fibers. By freeing the fibers, this process results in the production of chemical pulp.

   Pulping - an overview | ScienceDirect Topics

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   What is the objective of pulping?

   • The objective of pulping is to separate the fibers from fibrous raw material and convert into the pulp form. Fibrous biomass can be converted into pulp using chemical or mechanical pulping processes. In chemical pulping process, alkaline or acidic chemicals are used at elevated temperature to separate the fibers.

   Pulping - an overview | ScienceDirect Topics

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   What is mechanical pulping?

   • Mechanical pulping is used for lower grade paper such as newsprint and is the process used for recycled fibers. The advantage of this process is that it gives much higher pulp yields (90–95%) than do other processes but at the same time produces weaker paper because the method yields shorter fibers.

   Pulping Process - an overview | ScienceDirect Topics

   www.sciencedirect.com/topics/engineering/pulping-process

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2. www.sciencedirect.com › pulping-processPulping Process - an overview | ScienceDirect Topics

   www.sciencedirect.com › pulping-process

   Pulping is the process of breaking down paper (or wood) into individual fibers with the help of an elevated temperature (40–55 °C), alkaline pH (9.0–10.5), and mechanical force. During the pulping process of MSW paper, fibers flex, bend, and rub against one another to promote ink removal.

   • Mechanical Pulp

     Stone groundwood pulping is the oldest mechanical pulping...

   • Pulping

     Pulping is a process of converting lignocellulosic materials...

3. en.wikipedia.org › wiki › Kraft_processKraft process - Wikipedia

   en.wikipedia.org › wiki › Kraft_process

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   The kraft process (also known as kraft pulping or sulfate process) is a process for conversion of wood into wood pulp, which consists of almost pure cellulose fibres, the main component of paper.

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5. www.sciencedirect.com › pulpingPulping - an overview | ScienceDirect Topics

   www.sciencedirect.com › pulping

   Pulping is a process of converting lignocellulosic materials into pulp. Pulp is an intermediate material applied in papermaking. There are huge numbers of technologies of pulping methods that can be generally divided into three categories: mechanical (MP), chemical (CP), and hybrid pulping (HP).

6. www.sciencedirect.com › pulpingPulping - an overview | ScienceDirect Topics

   www.sciencedirect.com › pulping

   The classical pulping process is the kraft (chemical) process, also known as the sulphate process, invented in 1879 and patented in 1884 (US Patent 296,935). It was first adopted by industry in 1890, and has been predominant worldwide since 1940 (Biermann, 1993; Ragauskas, 2002).

7. Videos

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     part 1| introduction to pulp, fibers and pulping process used in pulp and paper production

     12 Aug 2020

     5.8K views

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     6:21

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     How do we make pulp?

     15 Apr 2021

     43.2K views

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     12:33

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     Part 2 | Krafts , Sulfide , Soda & NSSC pulping process in pulp manufacture for paper production.

     14 Aug 2020

     12.2K views

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8. link.springer.com › article › 10A review of the traditional pulping methods and the recent ...

   link.springer.com › article › 10

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   Jan 3, 2021 · The pulping industry has for decades not developed new pulping techniques but rather improved the traditional chemical and mechanical pulping processes to enhance pulp yields and quality, as well as saving energy and chemical loading required for pulping.

   • Author: Drake Mboowa
   • Email: dmbooowa@mail.ubc.ca

   • Publish Year: 2021

9. paper-pulper.com › kraft-pulping-process-overviewThe Kraft Pulping Process: A Comprehensive Overview - CNBM

   paper-pulper.com › kraft-pulping-process-overview

   • Cached

   The kraft pulping process is a complex and important method for producing pulp from wood chips or other lignocellulosic materials. The process involves cooking the wood in an alkaline solution to break down the lignin and separate the cellulose fibers, which are used to produce paper products.

10. link.springer.com › chapter › 10Basic Overview of Pulp and Paper Manufacturing Process - Springer

    link.springer.com › chapter › 10

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    The objective of pulping process is to remove as much lignin as possible without sacrificing fibre strength, thereby freeing the fibres and removing impurities which cause discoloration and possible future disintegration of the paper. Hemicellulose plays an important role in fibre-to-fibre bonding in papermaking.