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52 巻, 11 号
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佐藤 治雄1998 年 52 巻 11 号 p. 1483
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーPDF形式でダウンロード (2498K) -
堀 定男1998 年 52 巻 11 号 p. 1484-1507
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーGlobal warming issues lies in the rise of temperature of earth's surface brought by gradual increase of the Green House Gases (GHGs) such as CO2, CH4, N2O, etc., in the atmosphere. The problem is also called Climate Change and is expected to cause various climatical troubles on the earth. Most of the GHGs, mainly CO2 gas, are associated with energy consumption and are produced by the human activities. Since industrial revolution, CO2 gas has been accumulated gradually in the atmospere.
The third Conference of Parties (COP 3) was held in Kyoto in December 1997 and Kyoto protocol was formed in which it was agreed that Japan reduce CO2 emission by 6% by the year 2010, the U.S. by 7% the EU by 8% etc.
The Japanese pulp and paper industry laid out the Self-imposed Action Plan for Environment at Feb. 1997, in which we pledged that;
1. we will achieve by the year of 2010 another 10% reduction of purchased-energy consumption per product-unit from the 1990 level.
2. We are recycle-oriented industry undertaking various measures from tree plantation to wastepaper utilization. Through plantation, biomass fueling and wastepaper recycling, we are greatly contributing to sequestration of carbon and CO2 emission. We set up a goal to promote it at home and abroad so that total area owned in fee or under management may reach 550 thousand ha. by the year of 2010.
3. We will endeavor to attain the utilization goal of 56 percent for the wastepaper by the year of 2000.抄録全体を表示PDF形式でダウンロード (4374K) -
澤田 豊1998 年 52 巻 11 号 p. 1508-1517
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーThe energy consumption by chemical industries accounts for 18% of total consumption by whole Japanese industries, the 2nd largest consumption next to steel industry, among so called energy consuming industries such as steel, chemical, ceramic/cement, and paper/pulp. And carbon dioxide emission by chemical industries accounts for 7% of total emission in Japan.
Japanese chemical industries including petrochemical, plastics, and widespread chemicals manufacturing have set a new energy saving target to reduce the energy unit per production by 10% in 2010 from 1990 level as Global Warming Prevention Initiative in addition to their drastic energy saving efforts in the past.
Since the target is hard to achieve by applying only the existing technologies, Japanese chemical industries have started research and development works in order to create new energy saving and “green” production processes by innovative chemical technologies.抄録全体を表示PDF形式でダウンロード (2466K) -
製造工程ロスの熱源利用システム長谷 光晴1998 年 52 巻 11 号 p. 1518-1521
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーLINTEC is a company which produce and sell the speciality paper, fancy paper and converted paper. When producing these products we are very sorry to say that the whole materials which we through into do not become the final products and a part of the materials become in-process wastes. At the kumagaya mill we make the RDF from in-process wastes which was produced at the five mills including Kumagaya Mill in kantou area of LINTEC Co., Ltd. We burn the RDF at the boiler and produce the steam which is used by driing the paper and so on. Producing steam by RDR instead of oil we can save the oil about 5, 000 kl/year.抄録全体を表示PDF形式でダウンロード (1757K) -
伊藤 太亮1998 年 52 巻 11 号 p. 1522-1524
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーWe install soot blowers in a boiler to prevent dust problem. Conventional control systems determine the order and interval of making active soot blowers for each boiler. Thus, control systems make active each soot blower periodically in constant period. It makes the fluctuation of turbine output, bleeding steam pressure, backpressure bigger, and makes efficiency of a power station lower in short period.
Our system controls the schedule of all soot blowers in our mill to minimize the fluctuation of steam flow for soot blowers. It contributes to improve the efficiency of the power station by reducing steam flow for power plant and fluctuation of turbine output.抄録全体を表示PDF形式でダウンロード (1519K) -
柳衛 義彦1998 年 52 巻 11 号 p. 1525-1528
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーAn Induction motor (1, 270 kW) drove the pump in the old system. In the new system, the pump can be driven both by a newly installed steam turbine (2, 500 kW) and the renewed induction motor (1, 500 kW). Moreover, the motor can be used as a power generator.
During hours of high power (buying) charge, the turbine drives the pump and generate power at the same time. In low charge hours, the motor drives the pump as in the old system.
The new system enables to reduce the power consumption by 2, 500 kW during high rate hours.抄録全体を表示PDF形式でダウンロード (1663K) -
余剰電力の売電とパワープラント統合化橘 英樹1998 年 52 巻 11 号 p. 1529-1533
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーHachinohe Mill of Mitsubishi Paper Mills Ltd. introduced a high efficiency coal boiler and a steam turbine. With these, the capacity of in-house electric power supply has been increased and the radio of the generation of electricity rose from 75% to 100%.
As the result, this allowed Hachinohe mill to sell its electric power and allowed stable and efficient operation. For more efficient operation, Hachinohe mill integrated its existing power plant, and introduced operation support system. This support system computes with the line-shaped meter brush (the simplex method) and provides the optimal operation guidance. Overall of these measures was contributed to the energy conservation of the mill.抄録全体を表示PDF形式でダウンロード (1530K) -
海原 泰幸1998 年 52 巻 11 号 p. 1534-1538
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーOur company is located at the central area of Fuji city, Shizuoka prefecture, and we have three mills around this area, Honsha mill Fuji, Honsha mill Suzukawa, and Honsha mill Yoshinaga. With a slogan “Respect Daishowa Earth Environment Charter”, which is our basic production policy, we are making effort in our daily production work to improve product quality, reduce production cost, maintain environment, and save energy, aiming at creation of a company culture to match with nature.
Recently, recycled pulp manufacturing plant was modified and expanded to produce more recycled fiber, and it increased steam demand for direct heating in the recycled pulp manufacturing plant to reduce recovery rate of the condensed water, and to increase the demineralized water supply.
This paper reports the results of installation of a plate type heat exchanger to improve lower generation efficiency and higher fuel consumption due to reduced heat recovery rate from the condensed water line as stated above. After taking these measures, temperature of the demineralized feed water has increased by using waste heat of the circulating cooling water of the turbine condenser, and the steam used in deaerator of the boiler feed water line is reduced. Also, the generation efficiency of the condensing turbine has improved and higher electric power generation and more fuel saving have been performed.抄録全体を表示PDF形式でダウンロード (2137K) -
田村 和則1998 年 52 巻 11 号 p. 1539-1546
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーIn 1995, a gas turbine power plant was introduced into Ichikawa Mill in HOKUETU PAPER Ltd. in order to change the existing boiler and reduce energy cost. These co-generation facilities enabled us to obtain an independent electric production source and transmit surplus electricity for TOKYO ELECTORIC POWER Co. We changed over from oil (S=2.6%) to city gas for fuel, so that environmental pollution would not increase in the future. In addition, by utilizing an existing steam turbine plant efficiently, the mill energy cost could be lowered successfully. After initiating the operation of this plant, several problems were confronted. Our experiences accumulated through this operation over about 3 years are described in this paper.抄録全体を表示PDF形式でダウンロード (2351K) -
芦原 季一1998 年 52 巻 11 号 p. 1547-1554
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーTo cope with the environmental issues, plants and mills in an urban area have been trying to switch their fuel to gas from heavy oil. Gas turbine co-generation system is widely adapted by many plants recently mainly to offset increase of cost by the switch of fuel.
Yodogawa Paperboard Mill of Rengo Co. had been early in the change of boiler fuel to gas and gas turbine co-generation system was introduced at the end of March, 1997. As the result, energy saving in terms of thermal energy unit of 8.7% reduction had been achieved. As the same time, CO2 discharge volume was reduced by 13.2%, and NOx discharge volume was reduced by 8.7%.抄録全体を表示PDF形式でダウンロード (2796K) -
高歩留り化によるエネルギー変化志村 和哉1998 年 52 巻 11 号 p. 1555-1558
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーIn manufacturing Kraft pulp (KP), higher pulp yield does not necessarily mean energy saving, because the solid content of the organic substances sent to the recovery boiler is lowered, and smaller heating value results in reduced steam generation. However, only 1% higher pulp yield is of great benefit to the paper mill by increasing pulp production and saving wood chip material cost.
In Suzukawa mill, in addition to anthraquinone already used as an pulp yield improving agent, we have introduced polysulfide (PS) cooking in February 1996 to try further improvement of the pulp yield. As a result of introduced PS cooking that usual digesting yield is 100%, yield improvement of 1.2% for the eucalyptus UKP, and of 4.6% for the LUKP are observed. As the pulp yield has improved, generated steam per pulp ton is lowered, load of the recovery boiler is reduced to allow higher pulp production.
Finally, KP production in suzukawa mill has increased by about 3% due to improved pulp yield after introducing the PS cooking.抄録全体を表示PDF形式でダウンロード (2061K) -
中原 義正1998 年 52 巻 11 号 p. 1559-1561
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーThe energy in Ishinomaki Mill is supplied from 1 coal boiler, 1 oil boiler and 2 recovery boilers. We took notice of phenomenon which amount of steam consumption in winter is a lot many in summer. When the peak of steam demand in winter, we operate that down load of turbine and burn heavy oil with recovery boilers. Because amount of steam use increase for fall of temperature and water temperature.
Therefore we tried to increase hot water and rise temperature of hot water. Then we supplied process with hot water and succeed in big reduction of steam use. The way to make hot water is that cooling water of condenser is through into series of condenser. Cooling water that is increased temperature is supplied to Surface Condenser. From now on, we try to reduction of steam use that other cooling water add to series supply process with hot water.抄録全体を表示PDF形式でダウンロード (1885K) -
向地 純造1998 年 52 巻 11 号 p. 1562-1565
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーThis report is concerned with the example of the remarkable result of steam saving by changing steaming conditions of Batch Glove Digesters.
Steam consumption has been stable by changing controlling factor from temperature to pressure of steam at cooking process. Steam consumption has also been reduced because of the result of extending steaming time.
With other improvements, steam has reduced by 170 kg/PT. Furthermore, attitude of operators towards energy saving have improved.抄録全体を表示PDF形式でダウンロード (1661K) -
東北製紙L-1マシンの事例佐藤 謙志1998 年 52 巻 11 号 p. 1566-1567
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーWith the aim of improving its water removal capacity, in 1992 the press section of the L-1 Liner machine at Tohoku Paper was rebuilt from a Roll press type to a Shoe press.
Compared to a Roll press, the Shoe press is structured to supply a much higher nip pressure. Also, due to its unique form, it does not cause paper crushing and exhibits a much higher dewatering capacity. Through the use of the new Shoe press, a lowering of the moisture content of the paper at the exit of the press, and a more efficient use of dryer steam has been realized.抄録全体を表示PDF形式でダウンロード (1592K) -
叩解機使用台数削減による省エネルギー福岡 磁, 菅原 忠広, 川瀬 治, 藤田 一之1998 年 52 巻 11 号 p. 1568-1574
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーRefining energy is affected by many factors (flow rate, consistency, plate pattern, etc.). Adjusting these refining condition makes reduction of energy consumption. In the operation, refining energy is lower than those capacity to modify of pulp amount, or freeness drop at the time of changing paper brand. It makes specific power consumption of refining increase.
At our mill, KP refining was maintained by two refiners. On the other hand, a changing of KP bleaching circumstances caused both KP amount and freeness drop to decrease. So, we researched refining process in order to get a optimized refiner operation, and find out the best volume of pulp amount in our operation. This results in reduction of number of refiners, and energy consumption.
We report the various refiner conditions to reduce the energy consumption at KP refining.抄録全体を表示PDF形式でダウンロード (2328K) -
設備能力を最大に活かし, 工程の効率を高める成瀬 秀樹1998 年 52 巻 11 号 p. 1575-1581
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーDepending on the production rate, the stock preparation can be divided into two parts, one with continuous operation and the other with intermittent operation. Maximizing the productivity of continuous operation can reduce the operation time for reserve line. That is, the total operation efficiency can be optimized.
Remodeling system and new equipment are not the only way to improve efficiency. In this report, we introduce a case in which precise clearance control of machinery has achieved successful result.
Since 1993, we have checked fluctuating and declining points of productivity in a process of the stock preparation such as pulper, pumps and screens. All those points have clearances which should be controlled precisely to maximize the productivity. It is the most important to collect data daily. Stored data are used for standardizing proper maintenance cycle.
In our case, the energy consumption in 1997 has been decreased 17% since 1993, which is approximately 20, 000 kWh saving in a day. Because the daily output has not changed for those years, this energy saving mainly came from the improvement of machinery. The contribution of the clearance control is approximately 30% of above energy saving. We will continue this effort for further reduction of energy cost.抄録全体を表示PDF形式でダウンロード (4027K) -
山脇 謙一, 橋爪 敏郎1998 年 52 巻 11 号 p. 1582-1586
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーThere were many air compressors in Kishu mill. Most of them were reciprocating type, and had excess capacity. And maintenance cost for them was too expensive. Then, having installed few screw compressors instead of them, we saved energy and maintenance.抄録全体を表示PDF形式でダウンロード (1869K) -
長谷 伸男1998 年 52 巻 11 号 p. 1587-1591
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーIt is said that the groval warment has been much progressed these days, and the energy saving is taking position for it much greater then ever before.
At Nomachi Mill, the energy saving action programs in care of all employees have been annually taken and getting effective achievements. For an instance, in a year of 1997, it has been saved by 945 kW of electricity in a thirty activities, and 165 kl/month of heavy fuel oil in two activities. With new facility installations, such as Oxygen reactor, and coater machine, it seems to be a very energy crisis with higher demand of energy consumption. The energy saving is tool for control of the environmental improvement at the higher demand of energy consumption, and taken in action of several programs in manners of the inverter control, flow improvement, high efficiency machine in use and alternative operation.
The inverter control system is most widely approved as the main tool of energy saving. So for, a low voltage converter was applied to control a high voltage motor in manner of low voltage regulated. But, presently the high voltage direct inverter control has been developed and come in handy with reasonable prices, and at Nomachi Mill, two high voltage direct inverters have been installed.
Following are for an application explanation.抄録全体を表示PDF形式でダウンロード (1966K) -
野口 有一1998 年 52 巻 11 号 p. 1592-1595
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーNiigata Mill, Hokuetsu Paper has increased its production by new investment for these four years (1995 to 1998). As one part of it, the mill changed its low voltage distribution system of 200 volt to that of 400 volt. This conversion produced benefit by reducing numbers of high voltage motors, distribution loss, wiring cost, and frequency of disconnecting motors.抄録全体を表示PDF形式でダウンロード (2013K) -
産業構造審議会産業資金部会1998 年 52 巻 11 号 p. 1596-1604
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーThe capital investment in 1997 was expected to be 38.65 billion yens, based on answers from the sixty one companies. It was 4.1% increase from 1996. The capital investment in 1998 by the fifty eight companies will be 25.98 billion yens, which is the decrease of 30.1% from 1997. This decrease is due to the fact that major investments which lasted for almost four years were completed in 1997.
The investment for manufacturing process was 53.9% of the total investment in 1997 and that in 1998 is 41.6%. The expected investment in the coming five years is classified for subjects as follows ; manufacturing process : 26.3%, maintenance : 22.5%, renewal : 21.9%. The share for manufacturing process will go down.抄録全体を表示PDF形式でダウンロード (967K) -
太田 節三1998 年 52 巻 11 号 p. 1605
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリー「10月号に続けて遣唐使のことを述べる処であるが, 当月は中断させて頂き, そろそろ季節でもあり, 食とバインダについて少し述べることにする」。抄録全体を表示PDF形式でダウンロード (224K) -
一様曲げ (流れ方向曲げ) を受ける段ボールの弾性強度と形状 (第3報)松島 理, 松島 成夫1998 年 52 巻 11 号 p. 1606-1615
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーAn elastic stress analysis formulation for the double wall corrugated fiberboard (DWCF) with same kraftliners (KLs) and corrugated mediums (CMs) in upper and lower sides was made by simple treatment method corresponding to the deformation of the DWCF structure under uniform bending of the moment axis perpendicular to the machine direction. Then from this formation, the stress analysis for several DWCFs was performed and relations between stresses and shapes of DWCF elements were discussed in detail.
Absolute maximum stresses σkimax (i=1, 2) of upper and lower side KLs are on outer and absolute maximum stresses σsjmax (j=1, 2) of CMs are on inner surfaces respectively. σkimax increases slightly with the wavelength of CMs and σsjmax decreases obviously with the wavehight. σkimax and σsimax increase obviously with the thickness and the longitudinal elastic modulus of KLs. And σkimax increases slightly with the thickness and the longitudinal elastic modulus of CMs but σsjmax increases obviously.抄録全体を表示PDF形式でダウンロード (1429K) -
スパッタエッチングによる紙の微細な粗面化とその光学的利用 (第1報)山内 龍男, 福井 里司1998 年 52 巻 11 号 p. 1616-1622
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーAs paper surface was entirely etched by sputtering, homogenous and numerous cones or microcraters sized about 0.1 μm were eventually developed on the surface. The surface roughening in microstructure level brought about a decrease in specular gloss. Apparent etched depth was fundamentally proportional to sputtering energy. Increasing of the gas pressure from 10 to 100 Pa caused a decrease in apparent etched depth and depressed the development of microstructure. On the other hand, decreasing in the gas pressure from 10 to I and further to 0.2 Pa caused also a decrease in apparent etched depth and changed the microstructure pattern from cone shape to microcrater shape. Small and shallow projections appeared over the whole surface of paper at the early stage of sputter etching under the gas pressure of 10 Pa. The projections changed to small cones and then became to large cones by further sputtering. Although these projections caused a decrease in gloss of paper, the former projections specially caused a remarkable decrease in gloss. Comparing at the same level of apparent etched depth, numerous microcraters brought about much more decrease in gloss than dense forests of cones.抄録全体を表示PDF形式でダウンロード (8696K) -
1998 年 52 巻 11 号 p. 1623-1625
発行日: 1998/11/01
公開日: 2009/11/19
ジャーナル フリーPDF形式でダウンロード (605K)
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