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37 巻, 4 号
選択された号の論文の11件中1～11を表示しています
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水ノ上 隆重1983 年 37 巻 4 号 p. 305-313
発行日: 1983/04/01
公開日: 2009/11/13
ジャーナル フリーJapan Research Corporation organized a special mission to EUCEPA symposium on “Control systems in the pulp and paper industry” held in May, 1982 at Stockholm. The mission headed by Dr. Y. Nozaka, professor in control engineering at Tokai University, consisted of 3 engineers in pulp and paper companies and 4 engineers in instruments and control systems manufacturers in Japan.
After the symposium the mission made a two-week tour to visit several leading pulp and paper mills in Sweden and Finland.
This paper gives a brief summary of its report on computer control systems in the pulp and paper industry in Scandinavian countries.抄録全体を表示PDF形式でダウンロード (5027K) -
奈倉 道博1983 年 37 巻 4 号 p. 314-320
発行日: 1983/04/01
公開日: 2009/11/13
ジャーナル フリーResearch Association of Pulp and Paper Technology was established on September, 1982 for the purpose of effective promotion of technical development of the pulp and paper industry in Japan.
The objectives and the effects of direct causticization and improving recovery boiler efficiency, one of the research themes in our association, are as follows.
1. Abbreviation of conventional causticizing process and consequently saving oil in lime kiln.
2. Technical development of evaporator for ultra-higher concentration of black liquor.
3. Reduction of pulp cost as the result of above-mentioned two objectives.
Among several direct causticizing processes, we intend to make the study of ferric oxide process mainly as compared with borate process.
Apart from thin-film evaporation of black liquor to higher solids and freeze drying evaporation etc., we will investigate the “disc evaporator” process.
Our intention is to carry out R & D in accordance with the following schedule.
1983 Bench-scale experiment (about 120 B.D.kg/hr dried solids)
1984 Construction of pilot plant
1985 Operation of pilot plant (collecting and analysis of operational data for the design of commercial plant)抄録全体を表示PDF形式でダウンロード (763K) -
石黒 久三郎1983 年 37 巻 4 号 p. 321-331
発行日: 1983/04/01
公開日: 2009/11/13
ジャーナル フリーPDF形式でダウンロード (4910K) -
砺波製紙 (株) 二塚工場砺波製紙株式会社1983 年 37 巻 4 号 p. 332-338
発行日: 1983/04/01
公開日: 2010/01/29
ジャーナル フリーTonami Paper Co., Ltd. was established in August 1955.
The company has one mill named Futatsuka which locates in southern Takaoka City, Toyama prefecture.
This mill started up in February 1957, and has been producing newsprint and publication paper since then.
It has a capacity of 120, 000 t/y of paper with two twin-wire Bel Baie Formar.
It also produces pulp (such as GP, RGP and DIP) and supplies it to paper machines along with the purchased chemical pulp.
The mill site area is 176, 000 m2 and number of employees is about 220.
The mill's water is treated by an Activated Sludge and coagulation-sedimentation process. Stack gas from powerboiler is treated by scrubbers (OK-3 type) and electro-precipitator.抄録全体を表示PDF形式でダウンロード (11620K) -
測定方法内藤 勉, 臼田 誠人, 門屋 卓, 加藤 護1983 年 37 巻 4 号 p. 339-342
発行日: 1983/04/01
公開日: 2010/01/29
ジャーナル フリーA method for measuring the liveliness of paper was developed. The main part of the apparatus consists of two parts : (a) a cylinder along which the sample is bent to a certain curvature ; (b) the optical system to measure the recovery time accurately.
On the basis of the relationship between the recovery time and the flexural rigidity, the liveliness of paper was defined as 1/t2, where t is the recovery time of the sheet bent in a circular form, the radius of which is 4.20 cm.抄録全体を表示PDF形式でダウンロード (490K) -
榊原 彰, 枝重 有祐, 植松 敏夫, 武山 浩武1983 年 37 巻 4 号 p. 343-348
発行日: 1983/04/01
公開日: 2010/01/29
ジャーナル フリーThe hydrogenolysis pulping is proposed as a new process which is pollution free, energy saving and possible to separate biomass into hemicellulose and lignin that may be used for various fermentation process or as feedstock for chemical conversions.
Birch (Betula platyphylla var. japonica) chips were hydrogenolized in an autoclave with NaOHaq., phenol and cresols-water as solvents, on catalysts Cu2O and reduced Ni, at reaction temperature 160180°C, in 13 hr. under the hydrogen pressure 1865 kg/cm2.
Satisfactory results were obtained with the solvent of cresols-water and the catalyst Cu2O even under the reaction pressure 18 kg/cm2. The screened pulp yields are 5063%, and the strength properties of pulp sheet are almost equivalent to those of kraft pulp except tear factor. Their folding endurance is especially high.
The reaction mixture was separated into two phases, water and cresol layers. In the former, the hemicellulose sugars were dissolved, and the dominant one was xylose which amounted to over 60% of them. The latter dissolved lignin with relatively low molecular weight. These two wood components obtained separately would be usable by further processing.
The energy used for pulping may be largely saved, because the hydrogenolysis reaction is exothermic. Further, in this process the solvent, cresols can be supplied from the hydrogenolysis products of the lignin.抄録全体を表示PDF形式でダウンロード (775K) -
広葉樹パルプの基礎的研究 第4報山内 龍男, 村上 浩二1983 年 37 巻 4 号 p. 349-354
発行日: 1983/04/01
公開日: 2009/11/13
ジャーナル フリーThe sample pulps were prepared by blending with Bagtikan (Parashorea plicata) or Narig (Vatica mangachapoi) vessel element (henceforth referred to as vessel) pulp and Makanba (Betula maximowicziana) or Mangrove (Rhizophora sp., Bruguiera sp.) wood fiber (henceforth referred to as fiber) pulp, which had been separated by the method using a flat screen equipped with screen wire from the corresponding kraft pulp. The breaking tendency of vessels during beating process was assessed by examining the number ratio of whole, broken and fragmented vessels in the suspensions. The pick number and the surface strength of the handsheets from unbeaten and beaten blended pulps were measured by using the IGT printability tester and the wax pick test.
The broken or fragmented vessels increase with increasing beating degree. This tendency is noticeable for the pulps blended with Mangrove fibers and/or Bagtikan vessels. For this reason, the cell wall thickness of fibers and the size and/or distribution of pits in vessels were suggested. When blended with Mangrove fibers, the wax number is small and the pick number is large, in spite of pronounced breaking of vessels. This indicates that the bonding strength between fibers and vessels may be a major factor, and that the breaking of vessels may be a minor one in picking. A comparison between the vessel projected area size distribution and the pick area size distribution for the pulps showed that smaller vessels were apt to be picked than bigger vessels.抄録全体を表示PDF形式でダウンロード (5125K) -
1983 年 37 巻 4 号 p. 366
発行日: 1983/04/01
公開日: 2009/11/13
ジャーナル フリーPDF形式でダウンロード (137K) -
1983 年 37 巻 4 号 p. 369a
発行日: 1983年
公開日: 2009/11/13
ジャーナル フリーPDF形式でダウンロード (100K) -
1983 年 37 巻 4 号 p. 369b
発行日: 1983年
公開日: 2009/11/13
ジャーナル フリーPDF形式でダウンロード (100K) -
1983 年 37 巻 4 号 p. 369c
発行日: 1983年
公開日: 2009/11/13
ジャーナル フリーPDF形式でダウンロード (100K)
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