| Shell粉煤气化炉渣池内熔渣流动特性 |
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| 引用本文： | 张建法,梁钦锋,王剑,许建良,刘海峰,龚欣.Shell粉煤气化炉渣池内熔渣流动特性[J].化学工程,2011,39(4):89-93. |
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| 作者姓名： | 张建法 梁钦锋 王剑 许建良 刘海峰 龚欣 |
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| 作者单位： | 华东理工大学,煤气化教育部重点实验室,上海,200237 |
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| 基金项目： | 国家重点基础研究成果计划(973)(2010CB227005); 国家高技术研究发展计划(863)(2008AA05031); 国家自然科学基金资助项目(20906020); 中石化“Shell气化炉熔渣特性及炉内传热规律研究”项目资助 |
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| 摘 要： | 搭建Shell气化炉及其下部渣池的冷模装置,采用糖浆模拟熔渣,研究熔渣离开渣口后,在渣池上部空间的流动特征.研究发现:模拟熔渣离开渣口落入渣池并非自由沉降过程,而是在气化炉内旋流场作用下发生旋转,并最终由液膜变成液丝.当装置负荷大于75%时,部分模拟熔渣会在旋转气流作用下开始沉积到渣裙壁面.模拟熔渣在渣裙壁面上的沉积率...
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| 关 键 词： | Shell气化炉 熔渣流动 模拟熔渣 渣口 堵塞 |
Flow characteristics of slag in Shell gasifier slag bath |
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| ZHANG Jian-fa,LIANG Qin-feng,WANG Jian,XU Jian-liang,LIU Hai-feng,GONG Xin.Flow characteristics of slag in Shell gasifier slag bath[J].Chemical Engineering,2011,39(4):89-93. |
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| Authors: | ZHANG Jian-fa LIANG Qin-feng WANG Jian XU Jian-liang LIU Hai-feng GONG Xin |
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| Affiliation: | ZHANG Jian-fa,LIANG Qin-feng,WANG Jian,XU Jian-liang,LIU Hai-feng,GONG Xin(Key Laboratory of Coal Gasification of Ministry of Education,East China University of Science and Technology,Shanghai 200237,China) |
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| Abstract: | A cold flow experimental platform was established to investigate the flow characteristics of slag from slag bath hole of Shell gasifier,with syrup simulated as slag.The experimental results show that the medium isn′t free falling from slag bath hole,but rotation happens due to rotary flow field in the gasifier and liquid film finally broke up into liquid strips.When the device load is higher than 75%,the medium deposits on slag screen wall.The deposition rate first increases and then decreases with the increase of load,approaching a maximum deposition rate when the load is 100%.The deposition rate increases prominently with the decrease of medium viscosity.It is inevitable that part of slag deposits on slag screen.The thickness of the deposited slag increases gradually.When the deposited slag is thick enough,it drops into the slag pool to form large slag that may block the slag bath hole. |
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| Keywords: | Shell gasifier slag flow simulation medium slag bath hole block |
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