THE ROLE OF HYDROGEN IN COAL PARTICLE DISINTEGRATION AT ELEVATED-TEMPERATURES

被引：4
|
作者：
POZZOBON, RA
SHAW, JM
SUN, YS
机构：
[1] UNIV TORONTO,DEPT CHEM ENGN & APPL CHEM,TORONTO M5S 1A4,ONTARIO,CANADA
[2] NANJING INST CHEM TECHNOL,NANJING,PEOPLES R CHINA
来源：
CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 1990年 / 68卷 / 02期
关键词：
coal liquefaction; co‐processing; disintegration of coal; hydrogen‐coal interaction; preheating coal;
D O I：
10.1002/cjce.5450680223
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Coal particle size is considered to be a variable of secondary importance in coal/oil co‐processing and coal liquefaction. This finding is inconsistent with the proposed mechanism for coal particle disintegration, and product yields realized in previous large scale dissolution experiments. Coal particles are shown to break up as a consequence of hydrogen‐coal interactions occurring during preheating. The proposed mechano‐chemical mechanism for coal particle disintegration was identified through direct observation of disintegrating coal particles at elevated temperatures and pressures. Implications for the design of preheaters for coal/oil co‐processing and coal liquefaction are discussed. Copyright © 1990 Canadian Society for Chemical Engineering
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页码：340 / 345
页数：6
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