紙パ技協誌
Online ISSN : 1881-1000
Print ISSN : 0022-815X
ISSN-L : 0022-815X
52 巻, 3 号
選択された号の論文の18件中1~18を表示しています
  • 明日の計装技術を探る
    小島 哲郎
    1998 年 52 巻 3 号 p. 295-302
    発行日: 1998/03/01
    公開日: 2010/04/23
    ジャーナル フリー
  • 新 誠一
    1998 年 52 巻 3 号 p. 303-314
    発行日: 1998/03/01
    公開日: 2009/11/19
    ジャーナル フリー
    We considers a change of instrumentation caused by information technology rapidly growing. It contains mobile computing. object programming, and open system with the low cost, low power, and tiny micro computers more than 100 MIPS. Especially, we focus on the future of instrumentation systems and the instrumentation engineers.
  • 木村 健一郎
    1998 年 52 巻 3 号 p. 315-322
    発行日: 1998/03/01
    公開日: 2009/11/19
    ジャーナル フリー
    The advance of information technology centered on a personal computer (PC) fuels demand for an open control system. While reviewing the changing situations surrounding the total control system, I discuss how to combine a reliable and long-term maintenance system with open technology, considering networking and the standardization of various I/F technology.
  • 王子製紙 (株) 春日井工場6M/C (三菱・ベロイト製)
    水野 昭夫
    1998 年 52 巻 3 号 p. 323-330
    発行日: 1998/03/01
    公開日: 2009/11/19
    ジャーナル フリー
    It's very important for us to maintain and improve the quality of paper, In Kasugai mill, in order to improve the quality, the construction work on PM 6 was dose on a large scale in 1995.
    Activity of the maintenance and improvement of our product 'quality' on January 1996, we installed a CP equipment of No 6 m/c, which had a fine control actuaters. So we could improve BD profile.
    This report says the results of our BD profile control activities, we have done for a year and half.
  • 日本製紙 (株) 石巻工場N2M/C (IHI・フォイト製)
    藤山 道博
    1998 年 52 巻 3 号 p. 331-337
    発行日: 1998/03/01
    公開日: 2009/11/19
    ジャーナル フリー
    We have recently remodeled an existing paper machine (N 2 PM) in Ishinomaki Mill, Nippon Paper Industries. In order to improve cross direction profile especially both the side web, a Modulejet headbox which can control stock consistency has been installed. At the same time basis weight CD control is also started and we have got the excellent benefit in stability of fiber orientation and decreasing adjacent interference of cross direction. For geting more precise control result, we think QCS measuring system should be improved still more in multiple points measurement and high signal response.
  • 中越パルプ工業 (株) 川内工場4M/C (住重・バルメット製)
    幸田 昭彦
    1998 年 52 巻 3 号 p. 338-345
    発行日: 1998/03/01
    公開日: 2009/11/19
    ジャーナル フリー
    We have completed the modernization of No.4 paper machine, which was originally started in 1960. This machine is mainly producing fine paper.
    We remodeled the headbox for purpose of the quality improvement and the cost reduction. The existing headbox was replaced with new concept the SimFlo-D headbox (Dilution Headbox). This paper machine with SymFlo-D was first installed in Japan. Then, we achieved our aim according to expectation and ave continuing operation favorably.
    We report mainly control relation on the characteristic and the operational experience of this system and so on mainly.
  • 河井 良実
    1998 年 52 巻 3 号 p. 346-352
    発行日: 1998/03/01
    公開日: 2009/11/19
    ジャーナル フリー
    Kraft Pulp plant of Kushiro Mill, Nippon Paper Co., Ltd. was originally started in 1975. Then this plant was set up the oxygen delignification stage, and had been operated at one Hypochlorite stage (only reached 63 brightness, NYKP).
    In June 1996, our Mill introduced a new cooking technology, Lo-SolidsTM Cooking and Elementary Chlorine Free equipment (86 brightness, NBKP) not suing the chlorine and Hypochlorite at all for the first time in Japan. Now this plant is oprerated at the threestage, D 1-EOP-D 2 bleach sequence.
    In this paper, let us introduce the control details of adding chemicals at the previous Hypochlorite plant, applied control to new ECF plant and a viewpoint of selection DCS (Distributed Control System) for all over the Kraft Pulp plant. Accepting SI unit and features of the host computer are also described.
  • 篠原 靖
    1998 年 52 巻 3 号 p. 353-360
    発行日: 1998/03/01
    公開日: 2010/02/22
    ジャーナル フリー
    Two paper mills owned by Daio Paper Corporation have introduced DCS with a personal computer within one year of plant commissioning. The operator station which is based on Windows NT is connected to process controllers which are basically the same as conventional DCS with Ethernet. Easier operation, report, cost reduction of software and hardware are mainly expected after introducing the system.
  • 現場設置用操業計画スケジューラ
    西村 順二
    1998 年 52 巻 3 号 p. 361-365
    発行日: 1998/03/01
    公開日: 2009/11/19
    ジャーナル フリー
    Recently, Plant's operation in Pulp & Paper industry requires various skills, one is to utilize the equipments of the plant efficiently to reduce the cost of production and to manufacture the sufficient quality products, and the other is to establish the manufacturing operation with short period of lead time, that responds quickly to the change of market. The environment for operators has been changing drastically from the conventional way focusing on the product quality to overall optimized control, such as Product Management, Production Planning and Storage Management. In order to fulfill these requirements and accommodate changes operators need to have the capability of establishing production plan which dictate the quantity, quality and schedule of the production. This paper introduces the functions and benefits of using Production Planning Support Scheduler that is useful for the oprators to plan the production at operation When the operators used Production Planning Support Scheduler, the lead time of the production will become shorter and the volume of intermediate materials will be reduced.
  • 将来の紙パルプ操業管理に向けて
    伊藤 泰史
    1998 年 52 巻 3 号 p. 366-371
    発行日: 1998/03/01
    公開日: 2009/11/19
    ジャーナル フリー
    The pulp and paper plants operation control system is a package software for the pulp and paper industry. The pulp and paper industry has been many problems, such as severe competition, increase of fixed costs, unstable exchange quotations. This package software solves these problems. This package provides an integration of process control and Operation control, combination of standard equipment, easy customized function of business application software, and remote operation function. This package software runs on open platform computer. This package consists of the operation database, communication adapter subsystem, optimal plan subsystem, quality control subsystem, roll handling subsystem, and remote operation subsystem.
    In the future, we will plans the extension of pulp and paper plants operation control system, such as feedback function of process data and performance data of operation and integration of production system and sale system.
  • 生産活動の情報ネットワーク化・マルチメディア化に対応
    横川 信幸, 野里 一七
    1998 年 52 巻 3 号 p. 372-376
    発行日: 1998/03/01
    公開日: 2009/11/19
    ジャーナル フリー
    Companies' production activities are expanding beyond boundaries of region and nation. In this trend, a total instrumentaion system is required to be compatible with information networks.
    The EX-7000 series has incorporated such advanced features as multimedia and information network through adoption of an internationally standard architecture, while inheriting the technologies and know-how accumulated in the field of process control.
    Advancing production activities can be supported flexibly.
  • 渡辺 憲幸
    1998 年 52 巻 3 号 p. 377-383
    発行日: 1998/03/01
    公開日: 2009/11/19
    ジャーナル フリー
    To stay competitive, paper mill must produce more and better paper. To achieve these goals today, it is necessary to have as much information as possible about the performance of the machine sections and their effect on quality variations down the line.
    Combining the expertise and products of two paper industry leaders-Honeywell Measurex Quality Monitoring and SKF Condition Monitoring-the Total Machine Monitoring System (TMMS) provides full spectrum visibility into the paper marking process and machinery.
    The system provides the critical information needed to manage and optimise the entire paper making process for high product quality and trouble free machine operation.
  • 近藤 久男
    1998 年 52 巻 3 号 p. 384-389
    発行日: 1998/03/01
    公開日: 2009/11/19
    ジャーナル フリー
    DCS using personal computer is adopted and giving results in various field. Regarding how it will unfold from now on, we would like to verify further the scale and function by analysising the applications.
  • 佐々木 尚史
    1998 年 52 巻 3 号 p. 390-396
    発行日: 1998/03/01
    公開日: 2009/11/19
    ジャーナル フリー
    We have developed an automatic tuning tool that defines all tuning constants in profile control in paper and coater machines. The tuning tool is installed in Windows PCs and those PCs are connected to our measurement and control computer systems by Ethernet communication. This tool executes step response tests of cross direction actuators automatically by using neural network theory and it defines automatically all tuning constants for performing cross direction control by using wavelet analysis and neural network theory.
  • ラッド ジョン B.
    1998 年 52 巻 3 号 p. 397-406
    発行日: 1998/03/01
    公開日: 2010/04/23
    ジャーナル フリー
    The economic cycle for the industry is becoming much less predictable than it was ten to twenty years ago. The ways in which we communicate and use paper are changing. Finally, with the construction of mills all over the world, the pulp and paper industry has truly become a global market. Every mill executive's current objectives are to increase productivity while decreasing costs and delivering added value to their customers, in turn, generating added value for their shareholders.
    For the past five years, software products utilizing adaptive technologies have been introduced for solving process modeling/control applications in the pulp and paper industry. These adaptive algorithms (Neural Nets, Chaos Theory, Fuzzy Logic) have provided the unique ability to build accurate non-linear process models based on enormous historical data sets. These models are then put on-line using on-line software for continuous real time savings. Over twenty pulp and paper companies are currently using these products with resulting increases in yield, efficiency and throughput.
    This paper describes a new product that represents the next step in process optimization and its use for paper machine control. The Process PerfecterTM enables closed-loop control and optimization of nonlinear processes. The benefits of this system over traditional techniques delivers increased profitability by 1) the true unification of optimization and control into one discipline, 2) enabling nonlinear control in processes where traditional linear control is not applicable, 3) reducing the plant testing time for identification of process dynamics resulting in significantly reduced installation and process disruption, 4) by reducing maintenance cost and re-identification, and 5) improving quality through the implementation of statistically smart controls. This standard product, built upon and enhancing the previous products, provides a total solution that can be applied to significant pulp and paper unit.
  • 伊藤 通弘
    1998 年 52 巻 3 号 p. 407
    発行日: 1998/03/01
    公開日: 2009/11/19
    ジャーナル フリー
  • パルプ化条件およびパルプ特性
    潘 学軍, 佐野 嘉拓, 中嶋 博, 浦木 康光
    1998 年 52 巻 3 号 p. 408-415
    発行日: 1998/03/01
    公開日: 2009/11/19
    ジャーナル フリー
    In order to make use of rice straw (Oryza sativa L. cv. Kirara 397) as agricultural wastes effectively and to develop a novel pulping method for rice straw without environmental impact, an atmospheric acetic acid pulping was studied. The results indicated that the acetic acid pulping process is a promising method for rice straw. The straw gave screened pulps with satisfactory strength properties when refluxed in 80-90% aqueous AcOH with 0.32% H2SO4 or 0.10% HCl as catalyst for 3 hours. The aqueous AcOH was recovered from the waste liquor and AcOH washings by distillation without troublesome problems, and AcOH lignin and water solubles as sugars were prepared as by-products from the concentrated waste liquor by fractional precipitation with water. The ash contents in screened pulp, fines, water solubles and AcOH lignin were about 18, 24, 18 and 1.5%, respectively. The ash in the pulp and fines consisted mainly of silica which located not in fiber and parenchyma cells but only in epidermal cells as shown by a SEM-EDXA photograph. The silica left in the pulp may function as a filler of paper.
  • 撹拌羽根及び撹拌装置
    大高 総
    1998 年 52 巻 3 号 p. 416-418
    発行日: 1998/03/01
    公開日: 2009/11/19
    ジャーナル フリー
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