煤质特性对CeO_2催化煤粉燃烧的影响
Effect of coal characteristics on its combustion catalyzed by CeO_2
查看参考文献10篇
|
文摘
|
利用酸洗法和燃烧法分别得到煤中的有机物(脱灰煤粉)和煤灰,研究了煤变质程度、显微组分、煤灰含量等煤质特性对CeO_2催化煤粉燃烧的影响.研究发现,变质程度对CeO_2催化煤粉燃烧具有明显的影响,变质程度越高的脱灰煤粉燃点降低越多,燃速提高越快.其催化燃烧顺序为褐煤<烟煤<无烟煤.同时研究发现,CeO_2对神华烟煤两种主要显微组分的燃烧没有明显的催化作用.煤灰对脱灰煤粉燃烧也有催化作用,对人工煤而言,当煤灰含量低于18%时,煤灰与CeO_2具有协同作用.煤灰的质量分数为6%时,煤灰与CeO_2的协同作用最强,之后随着煤灰增加协同作用逐渐变弱;当煤灰的质量分数超过18%时,协同作用消失,CeO_2的催化作用消失.说明煤灰含量超过18%时,CeO_2的催化作用被抑制. |
|
其他语种文摘
|
Effects of coal characteristics including rank, macerals, coal ash and ash content on combustion catalyzed by CeO_2 were investigated using demineralized coals and coal ash. The results show that coal rank has remarkable effect on catalytic combustion. The higher the coal rank, the more decrease in ignition temperature of its demineralized coal. There is no obvious effect of CeO_2 on combustion of Shenhua coal macerals. Coal ash has some catalytic effects on combustion coal organics. The catalytic effect of mixture of ash and CeO_2 is more than that of ash or CeO_2 independently, showing they have interactions for catalytic anthracite combustion. Effects of ash content on catalytic combustion were investigated by synthesized coal, indicating catalytic effect was the best with 6% ash content. When coal ash content is over 18%, CeO_2 has some inhibiting effects on anthracite combustion. CeO_2 only has catalytic effect on combustion of higher rank coal with lower inorganic content. |
|
来源
|
燃料化学学报
,2010,38(1):29-34 【核心库】
|
|
关键词
|
CeO_2
;
催化燃烧
;
煤质特性
;
煤灰
|
|
地址
|
中国科学院过程工程研究所, 多相复杂系统国家重点实验室, 北京, 100190
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
0253-2409 |
|
学科
|
化学工业 |
|
基金
|
国家高技术研究发展计划(863计划)
|
|
文献收藏号
|
CSCD:3821054
|
参考文献 共
10
共1页
|
|
1.
HEDDEN K. Catalytic effects of inorganic substances on reactivity and ignition temperature of solid fuels.
Ger Chem Eng,1980,3(2):142-147
|
被引
2
次
|
|
|
|
|
2.
李华. 碱金属、碱土金属和过渡金属对煤的催化氧化作用.
大连理工大学学报,1989,29(3):289-294
|
被引
17
次
|
|
|
|
|
3.
陈海峰. 催化剂对煤着火特性的影响II.不同催化剂对煤催化着火的影响.
燃料化学学报,1993,21(3):180-184
|
被引
12
次
|
|
|
|
|
4.
WU Z. Catalytic effects on the ignition temperature of coal.
FUEL,1998,77(8):891-893
|
被引
5
次
|
|
|
|
|
5.
AHO M J. Catalytic effects of metals on peat combustion.
FUEL,1991,70(10):1143-1145
|
被引
6
次
|
|
|
|
|
6.
谢克昌.
煤的结构与反应性,2002
|
被引
177
次
|
|
|
|
|
7.
GANDUGLIA-PIROVANO M V. Oxygen vacancies in transition metal and rare earth oxides:Current state of understanding and remaining challenges.
Surface Science Reports,2007,62(6):219-270
|
被引
35
次
|
|
|
|
|
8.
朱之培.
煤化学,1984
|
被引
47
次
|
|
|
|
|
9.
公旭中. 热重法研究K_2CO_3与Fe_2O_3对煤粉燃烧反应性的影响.
燃料化学学报,2009,37(1):1-5
|
被引
1
次
|
|
|
|
|
10.
公旭中. 参比DTA法研究煤粉催化燃烧特性.
燃料化学学报,2009,37(3):282-288
|
被引
4
次
|
|
|
|
|
了解气象卫星更多信息，请访问