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50 巻, 12 号
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横川 親雄1971 年 50 巻 12 号 p. 871-872
発行日: 1971/12/20
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (307K) -
昭和46年11月5日第8回石炭科学会議講演西田 清二, N. Berkowitz1971 年 50 巻 12 号 p. 873-879
発行日: 1971/12/20
公開日: 2010/06/28
ジャーナル フリーThe reaction between nitrogen and coal in microwave discharge system at low pressure was studied, using two Japanese coals, 4 Canadian coals and a spectroscopic carbon.
HCN, CO and small quantities of (CN) 2 were the main gaseous products. Although reactivity-expressed as a function of total gaseous product yieldtended to vary in an, inverse sense with coal rank, (CN) 2/HCN ratio generally increased with rank. The Japanes coals yielded slightly more product gas and higher (CN) 2/HCN ratios than the Canadian coals, possibly because of their greater content of low molecular weight volatile matter which can easily react with active nitrogen in the gas phase. The reaction of several model hydrocarbons under similar conditions suggests that in low-rank coals the aliphatic structure was largely, while in high-rank coals some of the aromatic structure was affected. Activation energies for formation of HCN and (CN) 2 increased sharply above 230°C, probably due to an interaction of volatile matter with active nitrogen superimposing itself upon the normal surface reaction.抄録全体を表示PDF形式でダウンロード (1028K) -
265～316℃/0.3mmHg留分の分離 (その1)伊牟田 和敏, 大内 公耳, 栗原 孝二1971 年 50 巻 12 号 p. 880-886
発行日: 1971/12/20
公開日: 2010/06/28
ジャーナル フリーPetroleum ether soluble part in benzene extract of Yubari coal was fractionally distilled under reduced pressure into 6 fractions and residue. The 6th fraction (265-316°C/0.3mmHg) was fractionated by liquid chromatography on alumina column. The crystals separated from the second to the 9th fractions were then purified.1, 2, 3, 4 tetrahydro-2, 2, 9 trimethylpicene, picene-like substance, monomethylpicene, 2, 9 dimethylpicene and trimthylpicene were found and therir m. p., IR, UV and Mass spectra were measured. Monomethylpicene was presumed to be 2 methylpicene.抄録全体を表示PDF形式でダウンロード (1003K) -
冷間加圧圧縮率に対する試料炭性状の影響横川 親雄, 吉本 英雄, 林 善弘1971 年 50 巻 12 号 p. 887-893
発行日: 1971/12/20
公開日: 2010/06/28
ジャーナル フリーSeventeen kinds of coals with different ranks (77-93C%) were used. Eight hundred mg of coal particles of different grain (28-80, 80-100, 100-200, 200-325 and 325-Tyler mesh) were taken in a briquetting apparatus with a 10.10 mm diameter hole and a 10.05 mm diameter piston. The apparatus was placed on the deck of an autograph and the stack of coal particles was compressed with an increasing pressure (zero to 2 tons per cm2). The surface of the briquettes produced was observed under a microscope to check how the coal particles were packed up.Concerning with the reological properties previously reported for the coals used in this experiments, it was found that in genereal the compressibility was related with hardness and grindability as already pointed out, though some abnormality which suggested the other factors was observed.抄録全体を表示PDF形式でダウンロード (1760K) -
昭和46年11月5日第8回石炭科学会議講演小島 鴻次郎1971 年 50 巻 12 号 p. 894-901
発行日: 1971/12/20
公開日: 2010/06/28
ジャーナル フリーI attempted the application of coal petrography to the evaluation of coking coals and the prediction of their Drum Index of cokes which used in Japanese iron works.
Japanese iron works are using many kind of coals in the world, including U.S.A., U.S.S.R., Australia, Canada, Perland and Japan itself.
In order to predict the coking properties, the petrographic method have been presented by Shapiro and et al., and then some people attempted to examined the method, but just as they say, it seemed to be difficult to apply this method to all sorts of coals for prediction of coking property on essential precision.
The most irregular coking properties have been appeared in Japanese coals and oxidized coals. In order to correct and compensate the irregularities of the both sorts of coals, I attempted some methods by introducing the ultimate analysis.
As the results of them, I succeeded the good correlation of coke_strength between determined DI3015 and estimated value of coke strength from petrographical method. So that I could believe this method should be applied to all sorts of coal and blended coal for the prediction of Drum Index DI3015.抄録全体を表示PDF形式でダウンロード (1110K) -
瀝青炭から製造した再生フミン酸のイオン交換特性有田 静児, 中川 雅直, 谷原 紘一, 三木 敏晴, 野田 広1971 年 50 巻 12 号 p. 902-909
発行日: 1971/12/20
公開日: 2010/06/28
ジャーナル フリーThe regenerated hurnic acids (powder) prepared by oxidation of 6 Japanese bituminous coals (C: 75.7-89.5%) have studied on their ion exchange properties in heavy metal ion solutions. The adsorption ability of humic acids on Cd ion in its dilute chloride solution (1/5000M) increased in following order: natural humic acids extracted from lignites <those prepared by the oxidation with air <those by the oxidation with nitric acid (nitrohurnic acids), though the content of carboxyl group in humic acid increased in following order: those by the oxidation with nitric acid<natural hurnic acids <those by the oxidation with air. Nitrohumic acid was characteristic of its high ion exchange velocity comparable with that of Amberlite CG-120 and its high ion exchange velocity comparable with that of Amberlite CG-120 and its high adsorption ability on Zn, Cd and Cu ions from their dilute solutions at pH≥3.5. The adsorption of Cd ion was more effective on the nitrohumic acid of partial sodium salts type, on which saturation adsorption in Cd-, Zn-, Ca- and Mg-chloride solutions at initial pH 5 was ca. 1.0, 0.9, 0.6 and 0.5meq./g, respectively. The regeneration of nitrohumic acid having adsorbed Cd ion could be effectively done with 1M NaCl solution or 1M NaCl solution in two steps, and the adsorption ability after repeating regeneration of 6 times did not decrease. When the regeneration has been done with varying amounts of hydrochloric acid (0.5 N initial concentration), Cd ion concentration in equilibrated solutions at 99-100% and 90-92% regeneration ratio of humic acid was ca. 10-2M and 1M, respectively.抄録全体を表示PDF形式でダウンロード (1043K) -
昭和46年11月6日第8回石炭科学会議講演藤原 宣昭, 松尾 明, 出村谷 隆之, 吉村 太1971 年 50 巻 12 号 p. 910-918
発行日: 1971/12/20
公開日: 2010/06/28
ジャーナル フリーOyubari coal (-100 mesh) extracted thoroughly with pyridine at 50°C and followed deashing was hydrogenated with tetralin in an antoclave under 50kg/cm2 of the initial hydrogen pressure for 1 or 8 hours at 300-400°C in the presence or absence of ferric oxide.
Comparing the yields of the benzene-tetralin sluble fraction, the ultimate analyses and the It-spectra of the hydrogenated coals at various experimental conditions, it was concluded that ferric oxide suppressed hydrogenation or hydrogenolysis.
Such suppression increased with increasing amout of ferric oxide and, when the hydrogenation was carried out with 100% of ferric oxide to coal for 1 hour, not only suppression of hydro genation but also greater oxygen contents of hydrogenated coals that of original coal were observed.
On the other hand, ferric oxide was reduced to ferrous or metallic iron during hydrogenation, but these reduced irons were supposed not to promote hydrogenation of coal.
On hydrogenated coals, Har/C were as same as that of original coal, but Hal/C were increased, especially with increasing hydrogenation.
From these facts, it was considered that ferric oxide might not promote the hydrogenaticn or hydrogenolysis of the aliphatic bonds of coal.抄録全体を表示PDF形式でダウンロード (1215K) -
昭和46年11月6日第8回石炭科学会議講演伊藤 博徳, 牧野 和夫, 梅田 憲章, 武谷 愿, 上田 成1971 年 50 巻 12 号 p. 919-929
発行日: 1971/12/20
公開日: 2010/06/28
ジャーナル フリーHigh pressure DTA was applied to study the reaction of coal hydrogenolysis with three catalysts. The relationship between the exothermic peak of the DTA curve and the distribution of coal hydrogenolysis products was discussed.
In the case of hydrogenolysis of Sumiyoshi coal and Taiheiyo coal, exothermic peaks of the DTA curves were obtained in all catalysts used in this study but no apparent DTA peak was observed in any catalyst in case of Yubari coal.
Based on the changes in the distribution of products of coal hydrogenolysis sampled at intervals in the course of the DTA curve, it was found that in the low temperature range of coal hydrogenolysis the production of asphaltene and oil formed exothermic peaks, and at the same time it was shown that the reaction producing asphaltene and oil in the high temperature range did not form exothermic peaks.
The reaction heat calculated from the exothermic peak area of coal hydrogenolysis where coal is converted to the benzene soluble fraction ranged from 75 to 200cal/g.
The average structural parameters of oil and asphaltene, sampled at intervals in the course of DTA curve, were studied by NMR and ultimate analysis. It was found that the exothermic peak was formed in the temperature range wheare the average numbers of the condensed aromatic rings of oil and asphaltene increased, gradually with raising the reaction temperature.抄録全体を表示PDF形式でダウンロード (1524K) -
高速中性子放射化分析法による石炭の高圧水素化分解生成物の酸素の定量上田 成, 長谷 川義久, 前河 涌典, 横山 慎一, 矢部 勝昌, 吉田 雄次, 佐藤 俊夫1971 年 50 巻 12 号 p. 930-937
発行日: 1971/12/20
公開日: 2010/06/28
ジャーナル フリーHigh resolution NMR spectroscopy and other physical methods have been used for the study of the chemical structure of coal with the aid of chemical ultimate analysis by the conventional combustion method (JIS) and pyrolysis. However, a more precise ultimate analysis with special reference to oxygen is necessary in order to obtain a truly accurate determination of the chemical structure of coal. In the present report, a discussion was made on the precision of the fast neutron activation analysis for the determination of oxygen content of high pressure coal hydrogenolysis products. The following conclusionswere obtained.
(1) A relative error of 2% was achieved by the present neutron activation analysis using gold as the internal standard and solid paraffine and graphite as diluents. It was demonstrated that the method is applicable in the determination of more than 0.2mg of oxygen in a sample of 200mg.
(2) The relative error of the pyrolysis method was found to be 1-9% depending on the level of oxygen content in the samples. This method is applicable to samples containing more than 1.0% of oxygen.
(3) Oxygen content determined indirectly by the combustion method results in a generally overestimation because of incomplete combustion of the samples used in our present work.抄録全体を表示PDF形式でダウンロード (1086K) -
昭和46年11月6日第8回石炭科学会議講演上田 成, 前河 涌典, 石井 忠雄, 武谷 愿1971 年 50 巻 12 号 p. 938-947
発行日: 1971/12/20
公開日: 2010/06/28
ジャーナル フリーIn high pressure coal hydrogenolysis the red mud catalyst promotive effect was enhanced by an addition of sulfur. The additional effect was investigated quantitatively and it was foud that reaction rate constant showed a 2.5 fold increase in the first step while a slight increase was seen in the second step.
A new prssure feed-in apparatus was designed by which coal paste can be inserted within 5 seconds into a conventional autoclave maintained at reaction condition (400 or 450°C, 230kg/cm2) and the high pressure hydrogenolysis reaction rate of coal in the presence of red mud-sulfur catalyst was measured. When the obtained values were compared against the reaction rate constant obtained in a conventional batch type experiment under conditions of slow heating up rate of 4C or thereabouts, the results showed a fairly good agreement. At the same time no great difference was seen in the reaction product distribution between both cases.
Based on the above it may be surmized that by selecting appropriate experimental conditions, basic data measured in the conventional manner in a batch type autoclave may be applied to a flow system in which a rapid heating up rate is utilized.抄録全体を表示PDF形式でダウンロード (1249K) -
1971 年 50 巻 12 号 p. 953-959
発行日: 1971/12/20
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (1136K)
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