| 丙烯聚合卧式搅拌床反应器中持料量的检测 |
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| 引用本文： | 董克增,任聪静,王靖岱,阳永荣.丙烯聚合卧式搅拌床反应器中持料量的检测[J].化工学报,2011,62(6):1510-1515. |
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| 作者姓名： | 董克增 任聪静 王靖岱 阳永荣 |
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| 作者单位： | 化学工程国家重点实验室（浙江大学），浙江大学化学工程与生物工程学系 |
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| 基金项目： | 国家自然科学基金项目，中央高校基本科研业务费专项资金资助项目 |
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| 摘 要： | 利用单点声发射检测技术,根据颗粒撞击壁面产生声信号的机理,建立了卧式搅拌床反应器内持料量的预测模型,该模型可以定量描述单点声能量随床层持料量的变化规律.在搅拌转速、吹气量等条件保持不变时,以空气-聚丙烯颗粒体系为例,在冷模装置中考察了床层持料量在11.5～23 kg条件下单点声发射信号的变化情况.实验发现,单点声信号能...
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| 关 键 词： | 声发射 单点 持料量 料位 |
Measurement of bed mass in propylene polymerization horizontal stirred bed reactor |
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| DONG Kezeng,REN Congjing,WANG Jingdai,YANG Yongrong.Measurement of bed mass in propylene polymerization horizontal stirred bed reactor[J].Journal of Chemical Industry and Engineering(China),2011,62(6):1510-1515. |
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| Authors: | DONG Kezeng REN Congjing WANG Jingdai YANG Yongrong |
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| Abstract: | A model of bed mass in propylene polymerization horizontal stirred bed reactor(HSBR)was proposed to explore the quantitative relationship between acoustic emission(AE)energy and bed mass, based on the mechanism of acoustic signals emitted by collision between particles and reactor wall.The system of air and polypropylene was used as an example and investigated at the bed mass range from 11.5 kg to 23 kg.It was found that single point acoustic energy grew exponentially with increasing bed mass.Fitting results showed that the correlation coefficient was 0.9929 between AE energy and bed mass by using the model proposed.The feasibility of scaling up on an industrial plant was studied and test results were in accordance with the theoretical model.Therefore, single point acoustic emission method makes it possible to monitor the bed mass on line and further to predict whether the bed level is stable in HSBR, which is of great importance to optimize and better control the propylene polymerization process. |
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