巻号一覧
後続誌
55 巻, 12 号
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倉林 俊雄1976 年 55 巻 12 号 p. 955-956
発行日: 1976/12/20
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (398K) -
石原 寿二1976 年 55 巻 12 号 p. 957-974
発行日: 1976/12/20
公開日: 2010/06/28
ジャーナル フリーSince the commencement of the steam coal import from the people's republic of China in 1974, its continuity and increase of quantity have been deeply concerend about.
The writer visited China in march this year as a member of the delegation of of inspecting coal facilities in China, on the other hand, since 1969, the engineers of inspecting Mitsui Mining co., and other companies of Mitsui group were invited by the technical exchange association as often as four times to visit coal mines and to discuss with mining engineers of China.
The coal development in the future of China depends on the steady progress of mechanization at mines
As the large supplier of steam coal to Japan, China is expected to be in several years when the shipping port will be completely provided with necessary facilities, considering her abundant coal reserves, variety of coal quality, potential acility of production increase and so on.抄録全体を表示PDF形式でダウンロード (2278K) -
桜庭 信一1976 年 55 巻 12 号 p. 975-981
発行日: 1976/12/20
公開日: 2011/02/23
ジャーナル フリーIn Japan, the total emission rate of SO2 of target area is determined so as to meet the national air quality standard of S02, which is called the Total Quantity Control (TQC). The principle and techniques of such control procedure are described in this paper.
TQC starts with the simulation of hourly SO2 concentration based on the diffusion theory, which connects the concentration with emission rate via meteonological factors. The annual mean concentration is computed from the hourly value using meteorological statistics. If the annual mean concentration at any point of target area thus computed exceeds the national standard, the emission rates are reduced so as to meet the national standard.抄録全体を表示PDF形式でダウンロード (811K) -
炭材の製造条件が賦活結果に及ぼす影響工藤 一至, 寺田 清, 横川 晃, 三戸岡 憑之, 石橋 一二1976 年 55 巻 12 号 p. 982-987
発行日: 1976/12/20
公開日: 2010/06/28
ジャーナル フリーVarious chars which were obtained from sulfonation using sulfuric acid, oleum nd sulfuric anhydride were activated with steam under almost the same condition, and the influence of conditions to produce char on the yield and characteristics of activated carbon was investigated with these activated carbons. The possibility of the activation of char was influenced by the quantity of solvent and sulfonation reagent. The required quantity of sulfonation reagant reduced in order of the concentration of SO3; its quantity was the least in case of sulfuric anhydride and oleum followed this, and more quantity was required than the other two in case of sulfuric acid.
Good quality char was obtained with less amount of sulfonation reagent in case of using every sulfonation reagents when the amount of solvent increased. The specific surface area and methylene blue adsorbability of activated carbon obtained were 1, 300-1, 600m2/g and 250-450mg/g respectively.
Activated carbon obtained from char possessing large total ion exchange capacity had a large specific surface area and good adsorbability.
Furtheremore, it was recognized that activated carbon possessing a large specific surface area and good adsorbability was obtained from char containing larger amount of carboxyl-and hydroxyl- groups than sulfonic groups.抄録全体を表示PDF形式でダウンロード (936K) -
アスファルトの前処理過程における溶媒のくり返し使用工藤 一至, 寺田 清, 横川 晃, 三戸岡 憑之, 石橋 一二1976 年 55 巻 12 号 p. 988-996
発行日: 1976/12/20
公開日: 2010/06/28
ジャーナル フリーThis report describes the possibility of the repeated use of alkylhalide solvents, namely 1, 1, 2-trichloroethane and perchloroethylene at the time when carbonized intermediate product prior to activation (for simplicity, char) is produced from the sulfonation of propane-deasphalted asphalt (for simplicity, PDA) with oleum.
No influence of the repeated use of these solvents on the yield of char or activated carbon was recognized from the experimental results; they were very stable without damage or change in physical and chemical quality even after 20 times of repeated use along with oleum.
However, the ease of the sulfonation of PDA with oleum in solvent and the acti-vation of char with steam varied with the kind of solvents, so that 1, 1, 2-trichloroethane was adopted as a solvent for the sulfonation of PDA with oleum to obtain more suitable char for activation.
The recovery of solvent was always 98. 2'-98. 6wt.% because of distillation loss and the loss of solvent occluded in char. The concentration of acidic substances dissolving in recovered solvent was 1.0-1.5wt.% after first recovering, however, the accumulation of acidic substances was recognized only slightly after the repeated use of recovered solvents.抄録全体を表示PDF形式でダウンロード (1224K) -
アスファルトの前処理過程における炭材の粒状化と粉状炭材の添加工藤 一至, 寺田 清, 横川 晃, 三戸岡 憑之, 石橋 一二1976 年 55 巻 12 号 p. 997-1005
発行日: 1976/12/20
公開日: 2010/06/28
ジャーナル フリーThe influence of the position of stirrer fitted and stirring rate on the size distribution of produced char and content of granulated char in it was investigated to clarify the conditions for producing granulated char for activation. And then, the influence of the kind of solvent and its amount, the amount of oleum, reaction temperature etc. on the granulation of char in progress of reaction was investigatet under a constant physical condition.
Also the recyclization of powdered char recovered in the process of production was investigated in this report.
The size distribution of char was varied with the position of stirrer fitted and became smaller when the distance between stirrer and reactor became narrower. It was recognized that the size distribution of char was influenced considerably by stirring rate compared with the position of stirrer fitted and that the optimum stirring rate for granulation of char existed depending upon the kind of solvent and its amount.
The size distribution of char obtained from the sulfonation of asphalt along with powdered char recovered in the process of production varied with the blending rate of powdered char and had a tendency to transfer in the direction of smaller size in case of larger blending rate and in case of using smaller powdered char at constant blending rate.抄録全体を表示PDF形式でダウンロード (1266K) -
アスファルトの前処理過程におけるアスファルトの組成と硫酸量の関係工藤 一至, 寺田 清, 横川 晃, 三戸岡 憑之, 石橋 一二1976 年 55 巻 12 号 p. 1006-1013
発行日: 1976/12/20
公開日: 2010/06/28
ジャーナル フリーIt was found that the required quantity of sulfuric acid for producing non-caking char from asphalt, which had been determined empirically, could be determined quantitatively according to the shape of a thermobalance-curve of char and an asphaltene content in raw asphalt.
Namely, the quantity of sulfuric acid used so that the heating weight loss of char at 350-550°C in nitrogen atmosphere may become less than 28 wt. % was minimum required quantity of sulfuric acid for obtaining non-caking char from asphalt. Less sulfuric acid was needed than the minimum required quantity of sulfuric acid mentioned above to obtain non-caking char from asphalt of larger asphaltene content.
This experimental result enabled to produce char from asphalt, in which asphaltene content could be varied, so that the required quantity of sulfuric acid could be minimized.抄録全体を表示PDF形式でダウンロード (1112K)
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