PYROLYSIS CHARACTERISTICS OF MACERALS SEPARATED FROM A SINGLE COAL AND THEIR ARTIFICIAL MIXTURE

被引：42

作者：

XIE, KC

ZHANG, YF

LI, CZ

LING, DQ

机构：

[1] Institute of Coal Conversion Science, Taiyuan University of Technology, Taiyuan

来源：

FUEL | 1991年 / 70卷 / 03期

基金：

中国国家自然科学基金;

关键词：

COAL; MACERALS; PYROLYSIS;

D O I：

10.1016/0016-2361(91)90142-W

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Sufficient quantities of the three major maceral groups (vitrinites, fusinites and liptinites) were separated from a single coal, Pingshuo bituminous coal. Nine model coals were prepared by mixing the individual macerals in different amounts. The behaviour and kinetics of these 12 samples during nitrogen pyrolysis have been investigated and the pyrolysis mechanism has been analysed in conjunction with the information obtained by Fourier transform infrared spectrometry and X-ray diffraction. The data presented indicate that there are three stages in the overall devolatilization process, and each stage is a first-order reaction. The pyrolysis conversion of the maceral mixtures (model coals) is equal to a calculated sum of the individual macerals, and the activation energy in each stage equals the sum of the activation energies of the individual macerals.

引用

页码：474 / 479

页数：6