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浙江大学学报(工学版)
J4  2013, Vol. 47 Issue (2): 287-292    DOI: 10.3785/j.issn.1008-973X.2013.02.015
能源工程     
微波改性对水煤浆焦气化的影响规律
王爱英, 程军, 陈训刚, 刘建忠, 周俊虎, 岑可法
浙江大学 能源清洁利用国家重点实验室,浙江 杭州 310027
Effects of microwave modification on char gasification of
coal water slurry
WANG Ai-ying, CHENG Jun, CHEN Xun-gang, LIU Jian-zhong,
ZHOU Jun-hu, CEN Ke-fa
State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
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摘要：

为了揭示微波辐照改善煤粉理化特性对提高水煤浆气化性能的影响,采用黏度计、加压热天平和能谱仪等,研究微波改性对水煤浆焦常压和加压气化反应的促进规律.实验发现随着微波时间增加,水煤浆焦的常压气化温度和活化能都有所降低,并且随着压力升高使得气化温度和活化能逐渐降低.当微波时间增加到120 s时,菲律宾水煤浆焦的常压气化活化能从222 kJ·mol-1降低到207 kJ·mol-1,而当气化压力增加到0.6 MPa时活化能降低到185 kJ·mol-1.由菲律宾褐煤制成的水煤浆焦气化反应活性要高于贵州贫煤制成的水煤浆焦,而气化活化能规律正好相反.结果表明微波辐照不仅能提高水煤浆的制浆浓度,还能增强水煤浆焦的气化反应性.
Abstract:

Microwave irradiation was employed to modify coal physicochemical property to promote gasification performances of coal water slurry (CWS) gasification performances. The improvement of microwave modification on CWS char gasification at atmospheric and elevated pressures was investigated on a rotary viscometer, pressurized thermobalance and energy disperse spectroscopy. Both the gasification temperatures and activation energy of CWS char decrease with increasing microwave time and gasification pressure. The gasification activation energy of Filipine CWS char decreases from 222 kJ·mol-1 to 207 kJ·mol-1 at atmospheric pressure after a microwave time of 120 s, and further decreases to 185 kJ·mol-1 when gasification pressure increases to 0.6 MPa. The gasification reactivity of CWS char prepared from Filipine lignite is higher than that prepared from Guizhou lean coal, but the gasification activation energy is in reverse. Therefore microwave irradiation not only increases CWS solid concentration, but also increases CWS char gasification reactivity.
出版日期: 2013-02-01
:  TQ 546  
基金资助:

国家“973”重点基础研究发展计划资助项目（2010CB227001)；国家国际科技合作计划资助项目（2010DFA72730）.
通讯作者: 程军，男，教授，博导.     E-mail: juncheng@zju.edu.cn.
作者简介: 王爱英（1987—），女，硕士生，从事低阶煤改性制备水煤浆及燃烧气化的研究.E-mail: hdway17@yahoo.com.cn.
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引用本文:

王爱英, 程军, 陈训刚, 刘建忠, 周俊虎, 岑可法. 微波改性对水煤浆焦气化的影响规律[J]. J4, 2013, 47(2): 287-292.

WANG Ai-ying, CHENG Jun, CHEN Xun-gang, LIU Jian-zhong,. Effects of microwave modification on char gasification of
coal water slurry. J4, 2013, 47(2): 287-292.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2013.02.015    或    http://www.zjujournals.com/eng/CN/Y2013/V47/I2/287

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