著者

琴寄 崇

出版者

安全工学会

雑誌

安全工学 (ISSN:05704480)

巻号頁・発行日

vol.25, no.1, pp.10-18, 1986-02-15 (Released:2017-11-30)

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15種の木粉類につき,初めに常圧空気中におけるTG-DTAを測定し,材種による違いがどの程度現れるかをみた後,断熱型の昇温過程記録装置を用いて常圧乾燥空気中かつ断熱条件下における,樹木中の各部位の発火性の差異や木粉に色々な爽雑物が混入した場合の発火性の変化について数種の実験的知見を収集した.次いで,堆積物の熱発火限界温度を求めるために従来筆者等が提案してきた手法を,これらの木粉類に適用したところ,実測値にほぼ一致する値が得られた。本手法を用いると,従来の諸法によるよりもはるかに簡単に堆積物の熱発火限界温度を求めることができる.

著者

琴寄 崇

出版者

The Society of Synthetic Organic Chemistry, Japan

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.37, no.6, pp.486-493, 1979-06-01 (Released:2010-01-22)

参考文献数

5

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Some case histories in chemical process occurred due to unexpected reaction in the past twelve years in Japan were collected, classified and discussed. As the result, chemical accidents of this type were found to occur mainly in reaction process, in distillation process, in drying or storage process (in which the causes are mostly similar to spontaneous ignition phenomena) and in pipe lines.Causes of accidents in the reaction process can be classified into two large groups, in which one is due to the fault of temperature control and the other is concerned with the miss in composition control of the reaction system. The typical examples of the fault of temperature control are as follows breakdown of electric power supply, breakdown of temperature control instruments, infelicity of the positon of the temperature sensor, etc. And that of the miss in composition control are : breakdown of measuring instruments, mistake in feeding control of reactants or catalyst, fault associated with agitating operation, trouble in enlarging the scale of operation, etc.On distillation process, it is stated that special caution should be given to impurities such as catalyst or its derivative for recovery that may be carried forward with the crude distillate to the distillation process.In addition, some comments are given on how to investigate the course of accident.