74 0 0 0 OA 古紙処理と薬品

著者
平岡 誠
出版者
JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY
雑誌
紙パ技協誌 (ISSN:0022815X)
巻号頁・発行日
vol.43, no.3, pp.297-304, 1989-03-01 (Released:2009-11-16)
参考文献数
11
著者
富岡 敏郎
出版者
JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY
雑誌
紙パ技協誌 (ISSN:0022815X)
巻号頁・発行日
vol.34, no.12, pp.769-786, 1980-12-01 (Released:2009-11-16)

While the world's oil situation appears increasingly precarious under the impact of the reduction of oil supply provoked by the Iranian coup and OPEC's successive price increase, the “Tentative prospect on the long-term demand and supply of energy” which was published by the Demand-Supply Subcommittee of the Government's Comprehensive Energy Survey Commission in August 1979, highlighted coal as the most realistic energy source in place of oil.Our company, being the supplier of electricity located in the coal-producing region, has long committed itself to providing a stable supply of power primarily based on the coal-burning power plants, along the line of the national policy.This paper describes the outline of the boilers in our existing coal-fired steam power plants, characteristics of the fuel coal, hauling methods and equipment, disposition and possible utilization of the cinder ash, and anti-pollution measures, and further relates on the necessary considerations on expanding the use of coal, notably on the design of boiler and antipollution measures in using overseas coal, as well as the present state and unsettled problems of novel coal combustion technology such as COM, with on aim of providing information that will be useful for the planning and implementation of a coal utilization project.
著者
松島 成夫
出版者
JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY
雑誌
紙パ技協誌 (ISSN:0022815X)
巻号頁・発行日
vol.48, no.2, pp.324-343, 1994-02-01 (Released:2009-11-19)
参考文献数
39
被引用文献数
2 2

Mechanism of mechanical strengths is discussed for corrugated fiberboards of single face, single wall and double wall. The strength under the tensile load is discussed by the experimental results of the tensile deformation. Their strengths under the surface compression and the uniform bending made from the applied moment of the axis along the machine direction are discussed by elastic theory. Different mechanism of the strength is denoted for the deifference of the fiberboard.From the mechanism, the argument of the design for their fiberboards is performed on obtained effective results. And the determination of the reasonable shape for their fiberboards is studied from the obtained stress behavior.
著者
深田 一弘
出版者
JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY
雑誌
紙パ技協誌 (ISSN:0022815X)
巻号頁・発行日
vol.53, no.7, pp.834-844, 1999-07-01 (Released:2009-11-19)
参考文献数
6
被引用文献数
1 1

20 years ago, few newspapers printed copies with four-color printing because of the technical limitations of the pre-press and printing press. Since the introduction of computerized pre-press systems and automated plate-making and printing equipment, you probably see four-color items on most newspaper everyday.Once the color reproduction process required experts. Now computerized color processing technology makes it editors' jobs. They choose a favorite picture on a display screen and then hit a command button to transmit it to a designated page. When the development of a new advertisement system is completed, which gets originals with digital form via web from advertisement agencies, process time required for putting an advertisement on a page will be shortened and the quality of printings would be better.Japanese newspapers utilize offset presses for four-color printing in general. Satellite type machines were dominant in the past. A tower type machine appeared in the Japanese market 4 to 5 years ago and it thrives at present for the space efficiency and more color pages.
著者
張 魯寧
出版者
紙パルプ技術協会
雑誌
紙パ技協誌 (ISSN:0022815X)
巻号頁・発行日
vol.67, no.1, pp.68-72, 2013 (Released:2014-01-01)
被引用文献数
1

王子製紙苫小牧工場は北海道の千歳市に5箇所,恵庭市に2箇所,ニセコ町に2箇所計9箇所の水力発電所を保有している。この内,最も古い千歳第1発電所は支笏湖を水源として明治43年苫小牧工場の動力源として運転開始された。その後,工場の拡張に伴い大正5年に第2発電所,大正7年に第3発電所,大正9年に第4発電所,昭和16年に第5発電所が順次下流に建設された。これらの水力発電所群は平成19年に土木学会選奨土木遺産と経済産業省の近代化産業遺産群として認定されている。先人が残した遺産をきめ細かくメンテナンスすることにより,いまなお苫小牧工場のみならず支笏湖畔地域や他社への電力安定供給の一翼を担っているが,設備稼動後70年~100年が経過し老朽化が進んでいる。また,低炭素社会の実現に向けて再生可能エネルギー特別措置法が実施されたことによりCO2フリーの電力への関心も高まっている。当社はこのような社会状況に鑑み,発電事業の一層の強化を図り,電力の安定供給に寄与するため,水力発電所設備の制御駆動装置・入口弁・ガイドベーン(可動羽)・ランナー(羽根車)の更新によるリフレッシュ工事を順次実施する。リフレッシュ工事により,水車効率の回復や保守省力化を図ることが可能で,今後の水力発電所の活用に大いに貢献できると期待される。当社は地球温暖化問題に鑑み,低炭素社会への貢献を目的として,今後もクリーンエネルギーの活用に取り組んでいく。
著者
自動化委員会
出版者
紙パルプ技術協会
雑誌
紙パ技協誌 (ISSN:0022815X)
巻号頁・発行日
vol.50, no.3, pp.572-590, 1996-03-01 (Released:2009-11-16)

Automation Committee members had an opportunity to travel Finland for twelve days of July to August, 1995 by the support of Valmet Automation. We could experience a lot of things about advanced Finnish instrumentation technology in visiting paper mills and other facilities.
著者
塚本 治夫
出版者
JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY
雑誌
紙パ技協誌 (ISSN:0022815X)
巻号頁・発行日
vol.48, no.2, pp.298-304, 1994-02-01 (Released:2009-11-19)
参考文献数
28
被引用文献数
2 1
著者
山内 龍男 宇佐美 直治
出版者
紙パルプ技術協会
雑誌
紙パ技協誌 (ISSN:0022815X)
巻号頁・発行日
vol.59, no.10, pp.1546-1558, 2005 (Released:2006-08-25)
参考文献数
18
被引用文献数
3 3

木材パルプを原料とする一般洋紙と比較して, 楮を主原料とする市販の和紙には以下のような特徴が見られた。坪量が小さく, 厚さは比較的薄い。シート密度および弾性率は小さく, 繊維間結合もあまり発達していない。しかしながら紙面方向の各種強度は大きく, とくに引裂強度や耐折強度は極めて大きい。一方厚さ方向の強度である紙層剥離強度はかなり小さい。
著者
山田 吉郎
出版者
JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY
雑誌
紙パ技協誌 (ISSN:0022815X)
巻号頁・発行日
vol.57, no.3, pp.401-405,020, 2003

紙業界は鉄鋼業界の冷間圧延と同様にワーク速度が極めて速いことが知られている。目視では見ることの出来ぬ速度でワークが流れるのでため比較的早くから自動検査化が進んできている。しかし従来のシステムは数十台のカメラをラインに設置せねばならずカメラ間の感度の差異や取り扱いなど多くの問題点を持っていた。<BR>テクノスは全く新しい原理で, たった1台のカメラで速度が毎分10,000m視野幅1, 666mmの時に0.33mm角の欠陥を捉えるシステムを開発した。このシステムは既に日本を初め, アメリカ, ヨーロッパ (ドイツ, フランス, イギリス, スイス, オーストリア), 韓国で国際特許化された技術で, 「中小企業庁長官賞」, 「新機械開発賞」をはじめ「優秀新技術新製品賞」を3度にわたって受賞したもので, 日本のトップ企業38社のうち製造業には100%, 製造業トップ50社の70%以上に納入実績をもち汎用性と世界一の高精度を誇るものである。<BR>このシステムは高速応答性に優れるばかりではなく, 焦点深度が極めて深くラインのどこにでも, たった1台のカメラを簡単に設置でき, また欠陥の原因を追求する情報を容易にハンドリングできるアクティブ・ナビゲータ機能によって欠陥の原因そのものをなくすための情報を自動的に記録する機能を持っている。出来上がった製品の不良を発見するだけではなく, その原因をなくすことによって全ての原材料を無駄なく使い, エネルギの無駄遣いもなく, 世界で初めての地球に優しい検査・情報提供システムである。原理は人間の目の機能を電子回路化することによって行われる。また同時に微細欠陥と全面に渡る色ムラまでを別々なレベルで確実に検出できるアーキテクチャは最近特許化された。
著者
細谷 修二
出版者
JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY
雑誌
紙パ技協誌 (ISSN:0022815X)
巻号頁・発行日
vol.52, no.5, pp.595-607, 1998-05-01 (Released:2009-11-19)
参考文献数
22
被引用文献数
1 2

Since the worldwide pulp bleaching technologies have been changing rapidly from chlorine to non-chlorine, the role of hydrogen peroxide in pulp bleaching is getting more and more important recently. Hydrogen peroxide is a rather unstable bleaching reagent especially under the presence of metalic ions. Yet, the decomposition mechanisms are not well understood. Decomposition of hydrogen peroxide leads to the formation of acitive oxygen species which take part in the reaction with chemical components of pulp and it makes the chemistry of hydrogen peroxide bleaching even more complicated.Hydrogen perxiode itself is a nucleophylic reagent. It is often used in alkaline media to form an even stronger nucleophile which is a hydroperoxy anion. It can be used as an electrophile through activation by various methods. The active oxygen species formed from hydrogen peroxide may also react with pulp constituents as bleaching reagents. Thus, there are many kinds of reactions possible in hydrogen peroxide bleaching. However, the selevities of the reactions, which are to decompose lignin without docomposing cellulose, have got to be always taken into consideration.In view of above mentioned points, discussed here are several bleaching processes such as stabilized hydrogen peroxide bleaching, high temperature hydrogen peroxide bleaching, acidic hydrogen peroxide bleaching, dioxirane bleaching and peracid bleaching.

2 0 0 0 OA 漂白剤の化学

著者
内藤 輝彦
出版者
紙パルプ技術協会
雑誌
紙パ技協誌 (ISSN:0022815X)
巻号頁・発行日
vol.20, no.11, pp.579-585, 1966-11-01 (Released:2009-11-11)
参考文献数
23
被引用文献数
2 1
著者
金 鳳庸 磯貝 明 尾鍋 史彦 臼田 誠人
出版者
JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY
雑誌
紙パ技協誌 (ISSN:0022815X)
巻号頁・発行日
vol.44, no.2, pp.242-248, 1990-02-01 (Released:2009-11-19)
参考文献数
16
被引用文献数
2

In the previous papers, we have studied the influence of UV treatments on physical and optical properties of paper, and several characteristic results for UV treatments were obtained. In this paper, therefore, the mechanisms of the changes on physical properties, especially such as double folds, Young's modulus and water absorption values, by UV treatments of paper were examined in terms of molecular-order analyses of pulp and rosin chemicals.Cellulose in amorphous regions and hemicellulose are depolymerized through oxidative and/or radical reactions by UV treatments. This depolymerization leads to the formation of stable intermolecular hydrogen bond by molecular rearrangement, and thus the decrease in hydroxyl groups, which can interact with moisture or water, causes the decrease in hydrophilic properties of paper. This new hydrogen bond formation brings about the increase in Young's modulus, and even the slight decrease in moisture contents of paper probably causes the drastic decrease in double folds. On the other hand, porous structures of paper were found to be unchanged by UV treatments, and cross-linking reactions between cellulose chanis were not likely to form during the treatments.Rosin chemicals are degraded to form hydrophilic groups such as carboxylic acid from their double bonds by UV treatments. This causes the decrease in sizing degrees of rosin-sized paper, while the UV treatments bring about the increase in sizing degrees for rosin-free paper such as neutral paper owing to the formation of the stable hydrogen bond, as described above.