燃料化学学报2017，Vol.45Issue(1)：15-20,6.
氧化反应对胜利褐煤水蒸气气化反应的促进作用Ⅰ：宏观反应特性研究
Promoting effect of oxidation reaction on steam gasification reaction in Shengli lignite gasification processⅠ:Macroscopic reaction characteristic
摘要
Abstract
Shengli brown coal in 150-180μm was gasified at 800-900℃ in a simulated entrained-flow reactor,ψ80 × 3 000 mm. Conversion and kinetics of steam gasification reaction of the lignite were discussed to investigate synergistic effects of oxidation reaction on steam gasification reaction. The results show that lignite conversion under H2 O+1%O2 atmospheres is greater significantly than the sum of that under H2 O atmosphere and 1%O2 atmosphere, i. e. , the increase of lignite conversion from H2 O atmosphere to H2 O+1%O2 atmospheres is greater than that from N2 atmosphere to N2+1%O2 atmospheres. The synergistic effects are caused by promoting effect of oxidation reaction on steam gasification reaction, and are more obvious as H2 O content increasing and temperature rising. Moreover, the similar experiments were carried out in ψ40 × 200 mm cylindrical quartz fluidized bed, and the synergistic effects are also found. The steam gasification reaction rate equation, (Z-(1-x) )13 =tβkH2ORρC ψH2O=KH2OψH2O, is in good agreement with experimental data. This indicates that the apparent rate constant KH2O increases obviously after O2 adding to water vapor, which is the kinetic characteristics of promoting effect of oxidation reaction on steam gasification reaction.关键词
温和气化/协同作用/水蒸气气化/转化率/动力学Key words
mild gasification/synergistic effect/steam gasification/conversion rate/kinetics分类
化学化工引用本文复制引用
程相龙,王永刚,孙加亮,申恬,张海永,许德平..氧化反应对胜利褐煤水蒸气气化反应的促进作用Ⅰ：宏观反应特性研究[J].燃料化学学报,2017,45(1):15-20,6.基金项目
The project was supported by the 12th Five-Year Plan of National Science and Technology Support (2012BAA04B02).“十二五”国家科技支撑计划重点项目(2012BAA04B02)资助 （2012BAA04B02）
