Journal of The Japan Petroleum Institute
Print ISSN : 0582-4664
Search
Advanced search
OR
Browse
Search
Volume 11, Issue 12
Displaying 1-5 of 5 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • Studies on the Influence of Dilution in the Pyrolysis of Propane
    Mizuho Hirato
    1968 Volume 11 Issue 12 Pages 934-938
    Published: December 25, 1968
    Released on J-STAGE: January 30, 2009
    DOIhttps://doi.org/10.1627/jpi1958.11.934
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Effect of dilution by hydrogen, methane and steam upon the pyrolysis of propane was studied, using annular tubular reactor made of quartz under the operating conditions-between 700 and 950°C and the atomospheric pressure.
    In the case of hydrogen dilution, it was found that ethylene yield increased remarkably and a higher selectivity was obtained. While the formation of carbon and tar was considerably reduced, the propylene yield also decreased in proportion to the amount of hydrogen added.
    In the presence of methane, the increase in ethylene yield was considerable, but the formation of carbonaceous matter was not retarded appreciably.
    In the case of steam dilution, ethylene yield improved, and the amount of carbon and tar decreased.
    View full abstract
    Download PDF (364K)
  • On the Calculation of the Multi-component Distillation
    Hiromi Shono, Mitsuho Hirata
    1968 Volume 11 Issue 12 Pages 939-943
    Published: December 25, 1968
    Released on J-STAGE: January 30, 2009
    DOIhttps://doi.org/10.1627/jpi1958.11.939
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    A new iterative method is developed for solving problems of the product distribution and the composition and temperature profile in the column for multi-component distillation by the plate-to-plate calculation. In the proposed method, it is assumed only that the distillate and the bottoms composition are equal to the feed composition at the start of the calculation. This method employs Thiele-Geddes equations for plate-to-plate calculation from the top and bottom of the column to feed plate, and the θ-method for the convergence. Various cases were computed by this method.
    This method is simple and insures rapid convergence to solve problems of multi-component distillation.
    View full abstract
    Download PDF (329K)
  • Low Temperature Steam Reforming Reaction of Hexane on Nickel Catalyst
    Yoshiro Morita, Hiroshi Ichihashi, Eiichi Kikuchi, Masahiro Saito, Ken ...
    1968 Volume 11 Issue 12 Pages 944-947
    Published: December 25, 1968
    Released on J-STAGE: January 30, 2009
    DOIhttps://doi.org/10.1627/jpi1958.11.944
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The steam reforming of hexane was studied in the temperature range of 450∼500°C under the pressure of 1∼30atm by using nickel catalyst. The results obtained are summarized as follows:
    1) The equilibrium composition of products is determined by the following two reactions: i) CO+H2O_??_CO2+H2 ii) CO+3H2_??_CH4+H2O
    2) The rate determining step is involved in the decomposition of hexane by steam, and the reactions i) and ii) are fast.
    3) It is deduced that the reactant adsorbed on nickel is hexane and steam in gaseous phase or weakly adsorbed state reacts with the adsorbed hexane.
    View full abstract
    Download PDF (300K)
  • Liquid-Liquid Equilibrium for the Ternary System, 1, 3-Dichloro-2-Propanol-Water-Allylchloride
    Tomoo Kiryu, Masakazu Takaiwa
    1968 Volume 11 Issue 12 Pages 948-950
    Published: December 25, 1968
    Released on J-STAGE: January 30, 2009
    DOIhttps://doi.org/10.1627/jpi1958.11.948
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    After plotting of data for liquid-liquid equilibrium of ethanol-water-benzene ternary system, which was confirmed to check with the data of R.W. Moulton, equilibrium data for the ternary system, 1, 3-dichloro-2-propanol-water-allylchloride, were obtained.
    Allylchloride has been found to be a suitable solvent for extraction of 1, 3-dichloro-2-propanol in the water phase.
    View full abstract
    Download PDF (194K)
  • Determination of Acid Number of Asphalt by Improved Color-Indicator Titration Method
    Toyohiko Nakajima, Fumihiro Sugana, Chikato Tanobe
    1968 Volume 11 Issue 12 Pages 951-954
    Published: December 25, 1968
    Released on J-STAGE: January 30, 2009
    DOIhttps://doi.org/10.1627/jpi1958.11.951
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Acidic substances contained in asphalt have varying effects upon emulsifiability of asphalt and its adhesion with aggregates, and therefore, determination of acidity of asphalt is of importance. However, there has not been established a method of precisely determining the acidity of asphalt. This paper reports on an improved color-indicator titration method, by which the acid number of asphalt is determined.
    By treating benzene solution of asphalt with alcohol, acidic constituents were selectively extracted into alcohol solution, while asphaltic matters precipitated. A color-indicator titration method then was applied to the resultant faint-colored solution. The change of color at the end point was clearly observed, and the results were obtained with good reproducibility and checked well with the results by the I.P. 177/64 method. Alcohols having not more than three carbon atoms have been found suitable for extraction.
    View full abstract
    Download PDF (312K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top