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大型环盘折流板反应器壳程流动模拟及结构设计
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作者 高章帆 宋尧 +3 位作者 王智拓 王俊夫 刘彭华 刘维红 《压力容器》 北大核心 2024年第1期63-69,共7页
环盘结构是大型换热式反应器中最常用的壳程导流结构之一,针对环盘折流板结构参数的选择影响反应器壳程流场特性的情况,分析了环盘型折流板的结构特性,发现大型反应器折流板相对板距d*的取值通常为0.15~0.20;在此基础上建立了不同相对... 环盘结构是大型换热式反应器中最常用的壳程导流结构之一,针对环盘折流板结构参数的选择影响反应器壳程流场特性的情况,分析了环盘型折流板的结构特性,发现大型反应器折流板相对板距d*的取值通常为0.15~0.20;在此基础上建立了不同相对缺口面积S^(*)条件下的模型进行流场模拟;详细分析折流板结构参数对壳程流体流动形态、停留时间分布和压降特性的影响,综合考虑后提出S^(*)=0.15~0.30是大型反应器相对缺口面积的合理设计范围;最后,根据现有研究中单弓型折流板换热器的数据,在模拟的结构条件范围内对比了环盘和单弓结构的性能,为工程设计提供指导。 展开更多
关键词 换热式反应器 环盘折流板 流动形态 停留时间分布 压降
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Temperature fault-tolerant control system of CSTR with coil and jacket heat exchanger based on dual control and fault diagnosis 被引量:2
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作者 WANG Zai-ying WANG Guo-xin 《Journal of Central South University》 SCIE EI CAS CSCD 2017年第3期655-664,共10页
For the characteristics of the continuous stirred-tank reactor(CSTR) with coil and jacket cooling system,a CSTR temperature dual control solution based on the analysis of the CSTR exothermic reaction control character... For the characteristics of the continuous stirred-tank reactor(CSTR) with coil and jacket cooling system,a CSTR temperature dual control solution based on the analysis of the CSTR exothermic reaction control characteristic was proposed for an organic material polymerization production.The control solution has passive fault-tolerant ability for the jacket cooling water cutting off fault and active fault-tolerant potential for the coil cooling water cutting off fault,and it has good control ability,high saving energy and reducing consumption performance.Fault detection and diagnosis and fault-tolerant control strategy are designed for the coil cooling fault to achieve the active fault-tolerant control function.The CSTR temperature dual control,process fault detection and diagnosis and active fault-tolerant control were full integrated into the CSTR temperature fault-tolerant control system,which achieve fault tolerance control of CSTR temperature for any severe malfunction of jacket cooling or coil cooling cutting off,and the security for CSTR exothermic reaction is improved.Finally,the effectiveness of this system was validated by semi-physical simulation experiment. 展开更多
关键词 continuous stirred-tank reactor (CSTR) exothermic reaction dual control process fault diagnosis fault-tolerant control
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