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67 巻, 1 号
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イメージアップこそ緊急の課題芦田 誠二1988 年 67 巻 1 号 p. 1
発行日: 1988/01/20
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (208K) -
1987.8.26合成燃料部会新燃料委員会報告吉富 末彦, 野部 芳郎, 請川 孝治1988 年 67 巻 1 号 p. 2-13
発行日: 1988/01/20
公開日: 2011/02/23
ジャーナル フリーpresent status and technical problems for coal liquids and its utilization have been summarized as follows:
1) Importance of upgrading
2) Hydrotreating of coal liquids
3) Hydrogen consumption in hydrotreating of coal liquids
4) Compatibility with petroleum products
5) Storge stability and color stability
6) Bulk chemicals and speciality chemicals from coal liquids
7) Possibility for new utilization
8) Separation technique抄録全体を表示PDF形式でダウンロード (1178K) -
許 維春, 富田 彰1988 年 67 巻 1 号 p. 14-27
発行日: 1988/01/20
公開日: 2010/06/28
ジャーナル フリーThe formation of liquid products such as BTX and tar from the pyrolysis of coal was reviewed from a chemical point of view. First, the dissociation of bonds in coal during heat treatment was discussed. Polymethylene and/or oxymethylene bridges play important roles for the tar formation, because of their relatively low bond energies. The radicals produced in the above stage should be stabilized by hydrogen supplied either from other parts of coal molecule or from ambient atmosphere to yield liquid products. The factors which affect the final product yields were discussed. The secondary reaction of primary volatile matter is essential in this respect. The temperature, heating rate, residence time, coal particle size, gas pressure and minerals in coal all influence the secondary reaction. A molecular model of a bituminous coal and the reaction model during pyrolysis were proposed抄録全体を表示PDF形式でダウンロード (1644K) -
三木 啓司, 山本 佳孝, 斎藤 郁夫, 佐藤 芳樹1988 年 67 巻 1 号 p. 28-34
発行日: 1988/01/20
公開日: 2011/02/23
ジャーナル フリーA coal derived middle distillate produced from the liquefaction of Australian brown coal using a bench unit, was subjected to hydrotreatment on NiMo/Al2O3 and NiW/Al2O3 in a fixed bed reactor of 20 ml in volume at 350-390°Cunder hydrogen pressure of 100 kg/cm2 G with LHSV of 1 h-1. Further, catalytic hydrogenation of model mixture was carried out at 370°C on NiMo/Al2O3 with the same equipment to clarify the influence of phenols and quinolines, which occupied the significant amount of the feed oil, on the hydrogenation reactivi-ty.
Most of phenols were reduced to hydrocarbons at 390°C over NiMo/Al2O3, but at lower reaction temperatures, ortho-substituted alkylphenols gave lower conversions than those of meta-and para-isomers. Sterically hindered 2, 6-dimethylphenol also showed the poorest conver-sion (21‰) at 370°C compared to ortho-dimethylphenols;
3, 4-(96‰) >2, 3-(87‰) >2, 4-(76‰) >2, 5-(58‰) >2, 6-dimethylphenol.
Basic constituents in the crude oil were reduced almost completely at 390°C over NiMo/ Al2O3 except carbazole (HDN 98.6‰).
Hydrotreatment of the mixture comparising of p-cresol, quinoline, biphenyl and 1-methylnaphthalene showed that the increasing p-cresol content (0-14.2 mol‰) gave no noticiable effect on the hydrogenation degree of each component. On the other hand, addition of quinoline (0-6.2 mol‰) causes a considerable decrease of methyldecalin yield and biphenyl con-version, indicating the deactivation of catalyst by the adsorption of bases. Nitrogen content rather than that of phenolics in the recycle solvent should be one of the critical factors to affect the catalytic hydrogenation reactivity at the upgrading stage.抄録全体を表示PDF形式でダウンロード (727K) -
小室 武勇, 嵐 紀夫, 菱沼 孝夫, 神田 修, 黒田 博1988 年 67 巻 1 号 p. 35-42
発行日: 1988/01/20
公開日: 2010/06/28
ジャーナル フリーThe activated carbon-based desulfurization process is a promising method for elimination of SO2 from exhaust gases of fuel-fired power plants.
This report presents the results of numerical simulations of SO2 removal using a cross cur-rent moving bed adsorber and comparisons with experimental data from a pilot scale plant (capacity: 10000Nm3/h).
Repeated use of the activated caebon, and heating in an inert gas at 673-723K resulted in a gradual decrease of the SO2 adsorption rate.
Our numerical analysis correlates the change of adsorption rate with the accumulated amount of adsorbed SO2.
The SO2 adsorption rate was determined to be
dQ/dt= [SO2] e· [O2] n. [H2O] m. exp (-/RT) {K1 (Qs-Q) +K2Q},
(e=0.79, n=0.49, m=0.41, E=-2.5)
Where values of K1, K2 and Qs are given for various amounts of accumulated amount of adsorb-ed SO2.
The numerical model was based on two equations for SO2 adsorption rate and a mass balance for the cross current moving bed adsorber.
Computed results agree well with experimental data.抄録全体を表示PDF形式でダウンロード (886K) -
鳥飼 直親, 目黒 竹司, 齋藤 義治, 若狭 勉1988 年 67 巻 1 号 p. 43-49
発行日: 1988/01/20
公開日: 2010/06/28
ジャーナル フリーThis investigation was carried out to produce a new and high quality carbon material from atomization of modified coal tar pitch.
As a result, we obtained fine particles of pitch with 10μm average diameter. When this par-ticles were oxidized at 150-350°C with air, they were converted into infusible particles over 250°C. Elementary analysis showed that amounts of oxygen in sample increased with increasing temperature. FT-IR spectroscopy showed that the oxygen containing functional groups were formed in the air oxidation. The above results indicate the conclusion that oxygen induced dehydrogenative polymerization and development of three-dimensional cross-linked structure. Study of polarized light microscopy showed that the oxidation prevented the mesophase develop-ment.抄録全体を表示PDF形式でダウンロード (1395K) -
吉田 裕1988 年 67 巻 1 号 p. 50-59
発行日: 1988/01/20
公開日: 2010/06/28
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コジェネレーション問題検討委員会の報告について濱田 隆道1988 年 67 巻 1 号 p. 60-66
発行日: 1988/01/20
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (780K)
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