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52 巻, 10 号
選択された号の論文の16件中1～16を表示しています
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塩入 明1998 年 52 巻 10 号 p. 1311-1312
発行日: 1998年
公開日: 2009/11/19
ジャーナル フリーPDF形式でダウンロード (1985K) -
西川 進1998 年 52 巻 10 号 p. 1313-1320
発行日: 1998年
公開日: 2009/11/19
ジャーナル フリーWastes are treated mainly by incineration in Japan. Therefore dioxins emission from incinerator shall be reduced quickly. Dioxins mean normally a summation of PCDDs and PCDFs, as their chemical structures oxygen bonds two benzene rings which are substituted by a few Cln. They consist of 75 and 135 isomers respectively, in which 17 isomers are toxic substances.
In dioxins emission source, a MSW incinerator is the most, and a industrial waste incinerator is followed. A dioxin quantity from a combustion procedure is the biggest amount in industrial procedures. As dioxin formation mechanisms two processes are proposed, one is a formation from carbon residue in fly-ash which is called de novo synthesis and observed in a relatively low temperature of 300500°C, the other is from precursors. A theory of restraint of forming dioxins in combustion is maintaining of 3 T (Temperature, Time and Turbulence) in that field. As a dioxins reduction in commercial plants combustion air mixing improvements, for example, installations of nose wall and 2ndary air nozzles are mostly reported. A temperature reduction of gas treatment facility is a easy and effective improvement. Flue gas treatments for dioxins are a low-temperature bag house which removes with high efficiency, carbon adsorption bed and catalytic tower.
For a Japanese government's plan that is 98% reduction of dioxin emission from MSW incinerators in 10 years later, we shall do the best.抄録全体を表示PDF形式でダウンロード (2097K) -
改正廃掃法適合のための既存小型炉の排ガス処理設備の改造古川 和邦, 藤井 正嗣, 根本 源太郎1998 年 52 巻 10 号 p. 1321-1328
発行日: 1998年
公開日: 2009/11/19
ジャーナル フリーDioxin compounds are produced in a furnace, where chlorine reacts with not completely burned residues, and in a cooling stage of effluent gas. With the revision of waste treatment law in December, 1997, new severer standard for furnace structure and its operation and maintenance became effective intending to reduce dioxin emission.
The author describes how dioxins are produced during cooling of effluent gas, and explain a quick cooling process to counter their formation.抄録全体を表示PDF形式でダウンロード (2292K) -
関 勝四郎1998 年 52 巻 10 号 p. 1329-1334
発行日: 1998年
公開日: 2009/11/19
ジャーナル フリーRPF is a pelletized product, which consists of waste paper and plastics, and is used as fuel for boilers. We are producing 3, 500 tons every month at our 4 plants in two mills.
We started to develop this RPF thirteen years ago, aiming to utilize waste laminated paper products which were incinerated or disposed without any return.
The problem in general is that the business of utilizing waste materials is not free and is regulated with various laws relating to industrial waste handling. Our business was ap-proved as a first case supported by a new energy development law in last December. We think it a meaningful step forward.抄録全体を表示PDF形式でダウンロード (4444K) -
製造工程ロスの熱源利用システム斉藤 広昭1998 年 52 巻 10 号 p. 1335-1337
発行日: 1998年
公開日: 2009/11/19
ジャーナル フリーMany of the organizations involved in the manufacturing of paper and pulp products are fully committed to dealing with their environmental issues.
They consider paper recycling to be the problem of top priority to be tackled not merely by the pulp and paper industry but with the help of the consuming public. Though the primary focus of our company's paper recycling program is on material recycling, its ultimate goal is to implement thermal recycling. At our facilities is such an incineration system in operation that processes unrecyclable papers and films into solid, combustible materials which in turn are used as fuel for the boiler generating steam.
It is hoped that this presentation will provide an actual example of how recycling problems should be solved.抄録全体を表示PDF形式でダウンロード (4539K) -
大林 茂昭1998 年 52 巻 10 号 p. 1338-1347
発行日: 1998年
公開日: 2009/11/19
ジャーナル フリーRecently, from the viewpoint of recycling of the industrial and municipal waste, RDF and RPF are taken notice of the persons concerned. RDF is made of municipal waste, and has some characteristics which municipal waste never has. Some of them are the storage-ability and the mobility. Also, RDF is less harmful of exhaust gas than that of municipal waste because of the homogeneity and low water content of RDF. There are some RDF plants in Japan, and many local-governments are planning to introduce the RDF plant and system. But some problems are brought to light. Most important one is the method and place of usage of RDF.
The amount of waste plastic and paper is forecast about 12 million ton a year and the total calorie is equal to about 8 million ton of oil. RPF is made of waste plastic and paper, and is expected useful alternative fuel. There are some barriers to be practical use of RPF. First is the laws concerned the waste treatment and the facilities. Second is the standardization of RPF as the fuel for the wide and general distribution.抄録全体を表示PDF形式でダウンロード (3318K) -
高橋 孝一1998 年 52 巻 10 号 p. 1348-1358
発行日: 1998年
公開日: 2009/11/19
ジャーナル フリーThe Ebara Urban Refuse Incinerator and the Sludge Circular Combustor technologies have come together to give birth to a new environment-friendly waste treatment system. The technology has a great potential amidst current moves from waste treatment toward waste recycling.
Five Main Merits :
Flue gas volume : Major reduction
Dioxins : Complete degradation due to high-temperature combustion
Conversion of ash to a harmless form : Generation of the molten ash slag in a high temperature combustor
Thermal recycling : High-efficiency power generation high-temperature, high-pressure steam recovery
Material recycling : Recovery of metals in non-oxidized form抄録全体を表示PDF形式でダウンロード (10456K) -
環境技術委員会 , 廃棄物対策委員会 , 環境保全委員会1998 年 52 巻 10 号 p. 1359-1365
発行日: 1998年
公開日: 2009/11/19
ジャーナル フリーIn January 1998, the Ministry of International Trade and Industry asked industrial organizations to set up their targets for utilization/recycling and disposal of industrial wastes. JAPAN TAPPI and Japan Paper Association jointly made the survey of industrial wastes, in the industry with a new inquiry format. In 2000, in comparison with 1996, the total generation is expected to increase about 2.5%, but the disposal will be reduced by 46%.抄録全体を表示PDF形式でダウンロード (1171K) -
加藤 清, 鈴木 基之, 嶋田 修治, 南出 雄伸1998 年 52 巻 10 号 p. 1366-1372
発行日: 1998年
公開日: 2009/11/19
ジャーナル フリーGakunan Daiich Cooperative of Paper Manufacturing Association (abbr. Gakuichi) was founded by 13 Paper companys in 1974 at north west district of Fuji for the purpose of treating the P.S.
P.S. is a by-product in the production of recycled pulp (reclaimed pulp). It consists of organic components (short fiber etc.) inorganic components (clay, talc, others) and suitable moisture. On processing plant was equipped with a Rotary Kiln System. In the kiln, PS is changed to carbonized materials by high temperature and restrained air. High grade carbonized materials are utilized mainly as heat insulators and antioxidize additive for steel manufactures. Actual result of last year, recycle ratio of accepted PS and delivered substances is 99.4 percent.
We are going to introduce out line of a feature of our system this description.抄録全体を表示PDF形式でダウンロード (5143K) -
Leo H. A. Habets, Heins J. Knelissen, Arie Hooimeijer1998 年 52 巻 10 号 p. 1373-1380
発行日: 1998年
公開日: 2009/11/19
ジャーナル フリーReduction of effluent discharge leads to process water accumulation of anionic trash, waxes, secondary stickies, pitch, odorous components, salt, calcium hardness etc. This can have a negative impact on the paper making process as well as on the product, especially if the target is to achieve zero discharge.
The paper gives an overview of the problems that may occur, their causes and mechanisms, as well as the possibilities to cope with them. One method that can deal with most kinds of contamination at one time is the in line biological treatment. The mechanisms are given to show its effectiveness to remove both organic as well as inorganic process water impurities. In a full scale operating example, these facts are being confirmed and the first results are very positive, in terms of quality improvement and machine runability. Investment and especially operating cost are expected to be much lower than physical/chemical methods to achieve similar results.抄録全体を表示PDF形式でダウンロード (1424K) -
田口 徹1998 年 52 巻 10 号 p. 1381-1393
発行日: 1998年
公開日: 2009/11/19
ジャーナル フリー1998 TAPPI International Environmental Conference was held at Vancouver Trade & Convention Centre, Vancouver, Canada on May 5th-8th. The co-sponsors were CPPA-TS and US Department of Agriculture Forest Service. The main theme was “Opening Borders for Environmental Partnership”. About 800 people got together to share and discuss their current environmental issues. There were 53 sessions and almost all the aspects were presented in more than 120 papers. I report on some of them which are supposed to be interesting and informative.抄録全体を表示PDF形式でダウンロード (4109K) -
泥谷 直大1998 年 52 巻 10 号 p. 1394-1408
発行日: 1998年
公開日: 2009/11/19
ジャーナル フリーIt seems that green house gas problem becomes one of the most important things in the world now. We must anticipate that it will have severe effects on own pulp and paper industry in the near future. This article focuses Kyoto Climate Summit and some major developed countries'moves except Japan after that. Also it summarises scientific explanations and concerning debates for this problem.抄録全体を表示PDF形式でダウンロード (2865K) -
木材科学委員会1998 年 52 巻 10 号 p. 1409-1425
発行日: 1998年
公開日: 2009/11/19
ジャーナル フリーPDF形式でダウンロード (16229K) -
太田 節三1998 年 52 巻 10 号 p. 1428
発行日: 1998年
公開日: 2009/11/19
ジャーナル フリーPDF形式でダウンロード (233K) -
森 芳立, 清水 博文, 高尾 健司, 五十里 孝, 南部 哲男1998 年 52 巻 10 号 p. 1429-1445
発行日: 1998年
公開日: 2009/11/19
ジャーナル フリーWe developed new grade change (G.C.) control system on paper machine. This system is composed of moisture and basis weight control systems. In the former system we proposed new “iron (plate) model” which is possible to shorten calculation time greatly without injuring the calculation accuracy for the static simulation of the dryer cylinders, in the later system we constructed material balance model for wet part static simulation and we can calculate each quantities, pulp and filler concentrations of wet part's process lines by solving non-linear simultaneous equations. We extended those to dynamic simulation models to match with the response of the web grade is changed on paper machine.
Connected with the dynamic simulation model and convergence method, we could calculate control curves for dryer steam pressures and stock flow quantity during G.C. period.
Applying those results to actual paper process, it was confirmed that the new pressure and stock flow quantity prediction model's accuracy are improved about 50% and 10% respectively and the new control method can shorten total G.C. control time about 19% compared with the conventional method which need to stabilize the process condition for desired next grade ones.抄録全体を表示PDF形式でダウンロード (4047K) -
1998 年 52 巻 10 号 p. 1446-1452
発行日: 1998年
公開日: 2009/11/19
ジャーナル フリーPDF形式でダウンロード (1281K)
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