کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4675483 1347675 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experiment study of model compound oxidation on spontaneous combustion of coal
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علم هواشناسی
پیش نمایش صفحه اول مقاله
Experiment study of model compound oxidation on spontaneous combustion of coal
چکیده انگلیسی

Spontaneous combustion is one of the severest accidents in the process of coal production and transportation. Therefore it is significant to study the mechanism of coal spontaneous combustion. Based on theoretical analysis, 7 kinds of model compounds have been chosen in this paper, which are hyacinthin, anisole, diphenylmethane, phenetole, benzyl alcohol, benzhydrol, and aphenylpropanol. And they contain respectively active groups such as aldehyde group, methoxyl group, hypomethyl bond, hypomethylether bond, hypomethyl bond of a-carbon atom with hydroxyl, hypoalkyl bond of a-carbon atom with hydroxyl, and so on. According to the theory of free radical reactions, taking the model compound of coal above as research object, chemical reaction kinetic parameters, thermodynamic parameters, and products from normal temperature to 150°C have been quantitatively studied by oxidation device and analytical instrument, then the oxidation course can be deduced. The results show that all the model compounds consumed oxygen and produced CO and CO2 at different degrees after temperature programmed to 150°C. The oxidation characteristic of the active groups in coal and the effect of them on spontaneous combustion can be recognized, and spontaneous combustion mechanism can be exposited systematically in chemistry by means of studying the oxidation of model compound.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Procedia Earth and Planetary Science - Volume 1, Issue 1, September 2009, Pages 123-129