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Volume 49, Issue 5
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[in Japanese]1970 Volume 49 Issue 5 Pages 221
Published: May 20, 1970
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDownload PDF (233K) -
Fumiharu Saito1970 Volume 49 Issue 5 Pages 222-233
Published: May 20, 1970
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSFor the smoke prevention design of the building, it is necessary to know what amount of smoke flow out to the corridor from the room.
In this purpose series of experiments have been made.
One is the material test using an electric furnace and another is the model box test.
1). Electric furnace test
The amount of smoke generation C is given as follows
C=Cs×V
Where V is volume (m3) in which the smoke is dispersed and Cs is the attenuation coefficient (1/m).Smoke generation is assumed to be proportional to the disintergration of material and the ratio between smoke density and weight loss depends remarkably on the ambient temperature of specimen.
That is
C=Cs·V=KTW
Where KT is the smoke generation coefficient, W is the weight loss.
In the relation between the smoke generating coefficient and ambient temperature clearly two different portion can be seen one, is the portion of smoldering burn and another the flaming burn.
Both relation under smoldering burn and flaming one can be derived as follows,
KT= (A-BTn)
Where T is ambient temperature.
The rate of burning of specimen depends on the temperature and is expected of the following relation.
r=dw/dtK0W0exp (-E/RT)
Where W0 is weight of specimen, R the gas constant, E the activ ation energy, T the absolute temperature and K0 constant value.
Then the rate of smoke generation de/dt in case of these specimen is
de/dt=K·dw/dt= (A-BTn) · [K0W0exp (-E/RT)]
2). Model box test
In the model box burning rate and smoke generating coefficient depends on rate of A√H and combustible internal lining area (As).
Where A is openning area (m2) and H is high of openning.
Approximately the model box fire is assumed to be depend on openning factor (A√H/As).View full abstractDownload PDF (2748K) -
Masanobu Nojiri1970 Volume 49 Issue 5 Pages 234-241
Published: May 20, 1970
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSLNG Terminal of Tokyo Gas Co., Ltd. has been completed in Negishi, Japan. On November 11, 1969, the S. S. Polar Alaska loading an approximately 30, 000 tons of Alaska-produced LNG arrived at this LNG Terminal. Upon arrival of the load, the LNG receiving facilities at the teminal was cooled down by use of LNG and the facilities of the tanker.
Subsequent to the first LNG unloading, the start-up of the LNG regasification plant incorporating primary and secondary pumps, vaporizers and boil-off gas treating facilities was completed by mid-December.
A second LNG tanker, the S. S. Arctic Tokyo, which is to be used for this LNG import project, started her commission, about four months later the start of operation of the first tanker, S. S. Polar Alaska.
Tokyo Gas is presently exploring the possibility of additional import of LNG from Brunei as a future expansion project.View full abstractDownload PDF (2901K) -
Yoshiro Morita, Hideo Futami1970 Volume 49 Issue 5 Pages 242-252
Published: May 20, 1970
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSThe subjects discussed in this article are concerned with the nature and the formation of active sites of zeolites and their catalytic actions in organic reactions. Taking recent studies into account, it is reasonable that the active species of hydrogen zeolites is proton formed by deamination of ammonium ion exchanged with sodium cation, and that of zeolite catalysts exchanged by multivalent cations is also proton dissociated from adsorbed water in the electrostatic field of the zeolite.
Zeolites are active in cracking, isomerization alkylation and the other reactions of hydrocarbons. Since the surface area is large, they are also used as effective supports in hydrogenation, oxidation and dehydrogenation of hydrocarbons.
Subsequent discussions and elucidation are done on the catclitic actions of zeolites in these reactions.View full abstractDownload PDF (1354K) -
Masami Hoshikawa, Masaji Takuma, Nagahisa Nagae1970 Volume 49 Issue 5 Pages 253-261
Published: May 20, 1970
Released on J-STAGE: February 23, 2011
JOURNAL FREE ACCESSThis report refers to the outline of a spray type sulphur combustion device which has been newly developed to burn large quantity of excess sulphur regenerated from oil refinaries. The new divice is to be employed as a subsititute for the conventional evaporation type combution device such as checker type or pan type which is used for burning exploited and purified natural sulphur to generate SO2 gas.
The report further predicts that it is required to develop such powerful combustion as Rotary type burner, and Ultrasonic type burner and inpaticular oxygen inject type burner is promissing in consideration of chemical and physical properties of sulphur.View full abstractDownload PDF (4387K) -
Kashima Oil Co., Ltd.1970 Volume 49 Issue 5 Pages 262-270
Published: May 20, 1970
Released on J-STAGE: February 23, 2011
JOURNAL FREE ACCESSKashima Oil Co., Ltd. a joint venture of Mitsubishi Petrochemical Co. Ltd.(30%), The Tokyo Electric Power Co. Inc.(15%), Kyodo Oil Co., Ltd.(30%), and Daikyo Oil Co. Ltd.(25%), has just put on stream its first distillation Unit at Kashima, Ibaragi Pref., Japan.
With a starting capacity of 180, 000 BPSD of crude, and up to 600, 000 BPSD expansion plan, Kashima Oil will be a centre company of the Kashima Petrochemical Complex and will also supply oil products to Kyodo Oil and Daikyo Oil.View full abstractDownload PDF (1110K) -
1970 Volume 49 Issue 5 Pages 277-283
Published: May 20, 1970
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDownload PDF (865K)
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