应用TG-FTIR技术研究黄土庙煤催化热解特性

李爽; 陈静升; 冯秀燕; 杨斌; 马晓迅

应用TG-FTIR技术研究黄土庙煤催化热解特性

1.
西北大学化工学院陕北能源先进化工利用技术教育部工程研究中心, 陕西省洁净煤转化工程技术中心, 陕西西安 710069;
2.
陕西煤业化工技术研究院有限责任公司, 陕西西安 710065

基金项目: 国家自然科学基金(21006078);国家自然科学基金联合基金-面上项目(51174281);陕西省教育厅自然科学研究专项(11JK0593);陕西省科技计划(2012JQ2018)。

详细信息

通讯作者:
马晓迅,Tel:029-88302633,Fax:029-88302223,E-mail:maxym@nwu.edu.cn。

中图分类号: TQ530.2
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出版历程
- 收稿日期: 2012-08-13
- 修回日期: 2012-11-30
- 刊出日期: 2013-03-30

Catalytic pyrolysis of Huang Tu Miao coal: TG-FTIR study

1.
Department of Chemical Engineering, Chemical Engineering Research Center of the Ministry of Education for Advanced Use Technology of Shanbei Energy, Shaanxi Research Center of Engineering Technology for Clean Coal Conversion, Northwest University, Xi'an 710069, China;
2.
Shaanxi Coal and Chemical Industry Group Co Ltd., Xi'an 710065, China

摘要

摘要: 用浸渍法制备过渡金属氧化物担载型催化剂MO_x/USY(M=Co、Mo、Co-Mo),用热重红外联用技术考察了MO_x/USY催化剂对黄土庙(HTM)煤热解失重特性和热解产物生成规律的影响。热重实验结果表明,MO_x/USY催化剂可使HTM煤热解的二次脱气条件更为温和,热解峰温分别提前14、23和9℃。动力学分析结果表明,MO_x/USY催化剂可降低HTM煤样热解的活化能。FT-IR研究表明,MO_x/USY催化剂可有效改善HTM煤热解产物的组成和分布,CoO_x/USY催化剂能显著提高HTM煤热解产物中高热值气体(CO、CH₄)和轻质芳烃以及脂肪烃类化合物的含量;MoO_x/USY催化剂没有明显改善HTM煤热解产物组成和分布;MoO_x-CoO_x/USY催化剂可促进CO、CH₄、轻质芳烃和脂肪烃类化合物的生成,却使热解产物的生成向高温区移动,说明USY负载的不同过渡金属氧化物对煤样热解行为和热解产物有较大影响。
- 黄土庙(HTM)煤 /
- 催化热解 /
- 动力学分析 /
- MO_x/USY /
- TG-FTIR
Abstract: MO_x/USY catalysts (M=Co,Mo,Co-Mo) were prepared by incipient wetness impregnation method. Catalytic pyrolysis of Huang Tu Miao (HTM) coal was investigated and the pyrolysis products were examined by TG-FTIR technique. TG results indicate that MO_x/USY catalysts are effective in lowering degasifiction temperature (14, 23 and 9℃ respectively) in HTM coal pyrolysis. Kinetic calculations show that MO_x/USY catalysts are effective in lowing activation energy of pyrolysis. FT-IR analyses show that the MO_x/USY catalysts are effective in manipulating coal pyrolysis products. CoO_x/USY catalyst promote the generation of CH₄, CO and aromatic hydrocarbons and aliphatic hydrocarbons in HTM coal pyrolysis. MoO_x/USY catalyst show little effect in manipulating pyrolysis products. CoO_x-MoO_x/USY catalyst is a promising catalyst in giving high yield of volatile products, however the pyrolysis temperature moved to high temperature region. These results indicate that different metal oxides incorporated zeolite USY have different impact on manipulating pyrolysis products.
- Huang Tu Miao coal /
- catalytic pyrolysis /
- kinetic analysis /
- MO_x/USY /
- TG-FTIR

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