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35 巻, 4 号
選択された号の論文の7件中1～7を表示しています
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原 啓志1981 年 35 巻 4 号 p. 303-314
発行日: 1981/04/01
公開日: 2009/11/13
ジャーナル フリーPDF形式でダウンロード (7349K) -
環境改善技術委員会 , 宇津木 靖1981 年 35 巻 4 号 p. 315-343
発行日: 1981/04/01
公開日: 2009/11/13
ジャーナル フリーThe Environmental Improvement Committee of J. TAPPI sent a questionaire to those member companies which operate lime kilns concerning their dust removing devices.
The questionaire includes;
1. the types of device they use;
2. actusl performance of their devices;
3. the function and maneuverability of their devices; and
4. how each mill is going to respond if the national regulation standard on soot and dust emission should be further intensified.
Fifty-six (56) percent of the kilns surveyed are subject to the intensified regulatory standards imposed by the local communities, and the pulp mills employ the existent dust removing devices to meet such standards.
Various types of dust removing device have their own merits and demerits; each mill appears to be making the best use of the existing device.抄録全体を表示PDF形式でダウンロード (3150K) -
大昭和製紙 (株) 白老工場大昭和製紙株式会社1981 年 35 巻 4 号 p. 344-356
発行日: 1981/04/01
公開日: 2009/11/13
ジャーナル フリーDaishowa Paper Manufacturing Co., Ltd. owns five mills, namely, Suzukawa, Yoshinaga, Imaizumi, Fuji, in Shizuoka prefecture and Shiraoi in Hokkaido.
Shiraoi mill, located at Shiraoi-cho in South Hokkaido, has started its operation since 1960, now it is the largest and newest mill in our company.
The mill is about 40 kliometers far to the north east of Muroran Port, from which imported wood chips (Douglas fir, Eucalyptus) and 70% of its products are transported.
Paper & paperboard mill has 6 paper machines (daily capacity 1, 230 tons), 3 paperboard machines (daily capacity 320 tons), 2 off coaters (daily capacity 16 tons) and its products are newsprint, printing and writing paper, diazo sensitive paperstock, business form paper, coated paper, linerboard, coated white board and others.
Pulp mill has 2 KP continuous digesters, 5 KP batch digesters, 3 BKP plants, 3 grinders, RGP plant, A-CGP plant, DIP plant and 2 pulpers for old corrugated containers pulping. The mill area is about 1, 340, 000m2 and the employees are about 1, 200.抄録全体を表示PDF形式でダウンロード (24412K) -
第1報 : 古紙回収再利用システムの動的モデル吉田 総夫, 大野 弘, 梶原 惇, 石塚 昌義, 橋本 伊織, 塩谷 捨明, 高松 武一郎1981 年 35 巻 4 号 p. 357-367
発行日: 1981/04/01
公開日: 2009/11/13
ジャーナル フリーIn recent years, the recycle utilization of resources has been of great importance as an effective measure for the solution of energy, resources and environmental pollution problems. Within this context, the recovery and utilization of waste paper have tended to increase in many countries.
The aim of this paper is to make clear the prospects and policies for waste paper recycling and utilization in Japan. For this purpose, a dynamic model of the national level is first developed. In this model, all the processes relevant to the production, distribution and consumption of paper and board, and the generation, recovery and disposal of waste paper are decomposed to four subsystems such as manufacturer, wholesaler, consumer and recovery sectors.
The material flows in the whole system are characterized by the state variables which express the inlet and outlet flow rates of paper and waste paper to and from these subsystems, and the state variables which express the inventories of paper and waste paper at each subsystem. By adding many controlling and influencing factors to the basic material flow model as information flows, the whole dynamic model structure is developed.
The parameters included in the model are estimated from the real data, and the confidence of the model is confirmed by comparing the calculated values from the model with the real data for 10 years. Then, the model is utilized for estimating the change of state variables whose real data are not available.抄録全体を表示PDF形式でダウンロード (1406K) -
リグニンおよび炭水化物の挙動稲葉 政満, 飯塚 堯介, 石津 敦, 中野 準三1981 年 35 巻 4 号 p. 368-374
発行日: 1981/04/01
公開日: 2009/11/13
ジャーナル フリーPre-irradiation of wood in alkaline aqueous ethanol increases kraft pulp yield by up to 1.2 %, as already reported. In order to clarify the mechanism of the pulp yield gain, the behaviors of lignin and carbohydrates during pre-irradiation and cooking were investigated.
The results are summarized as follows :
1) γ-Irradiation of guaiacylethane in alkaline agueous ethanol produced 5- (1-hydroxyethyl) -guaicylethane, which is formed by radical coupling between α-hydroxyethyl radical from ethanol and guaiacylethane radical having an unpaired electron at C-5. 5, 5'-Dehydrodiguaiacylethane, which may be a predominant product produced by γ-irradiation in the absence of ethanol, was also detected.
2) The yield of vanillin obtained by nitrobenzene oxidation of MWL decreased with an increase of γ-ray dosage. The presence of ethanol during γ-irradiation lessened the extent of this decrease and also the degradation of cellobiose.
3) Gel filtration of the products obtained by γ-irradiation of MWL and cellobiose in the presence of 14C-ethanol showed the possible combination between ethanol and MWL or cellobiose.
4) Molecular weight distributions of kraft lignin obtained from pre-irradiated beech chips were compared with those obtained from unirradiated chips. This result shows that γ-irradiation in the presence of ethanol decreases the ability of lignin to condense during kraft cooking.抄録全体を表示PDF形式でダウンロード (864K) -
Jeannette C. Adkins, 芹沢 慎一郎1981 年 35 巻 4 号 p. 375-378
発行日: 1981/04/01
公開日: 2009/11/13
ジャーナル フリーChesapeakeのクラフトライナーボード工場では, 白色度の変動を最少化することが, 常に生産と技術部門の目標となっていた。連続式とバッチ式蒸解釜からライナーボード用のパインパルプを生産する際, 白色度変動は, 我々の工場では, 特別な困難な問題であった。我々の蒸解条件下では, 連続蒸解されたパルプの自色度は高く, バッチ蒸解されたパルプとそれが適当に混合されなかったならば, 最終製品の白色度変動の原因となり得るのである。
未晒の連続式及びバッチ式蒸解パルプの白色度変動の原因となる因子の影響を明らかにするため, 白色度変動の原因と報告された主な二点について, 調査, 研究が開始された。すなわち, パルプの過マンガン酸カリ価と, 一定の過マンガン酸カリ価へ到達するための蒸解釜への有効アルカリ (EA) 添加鼠である。測定は, 初め工場の蒸解釜で生産されたパルプでなされた。もし, これらの測定で多くの説明されない変動を示す場合は, 研究室のバッチ蒸解研究で補足された。抄録全体を表示PDF形式でダウンロード (2225K) -
1981 年 35 巻 4 号 p. 388
発行日: 1981/04/01
公開日: 2009/11/13
ジャーナル フリーPDF形式でダウンロード (168K)
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