| 热旁路塔压控制系统中两种不合理的流程设计分析 |
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| 引用本文： | 刘成军,谢国宏,胡玉臣.热旁路塔压控制系统中两种不合理的流程设计分析[J].石油化工自动化,2009,45(2):11-13. |
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| 作者姓名： | 刘成军 谢国宏 胡玉臣 |
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| 作者单位： | 中国石油工程建设公司,华东设计分公司,山东,青岛,266071 |
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| 摘 要： | 精馏塔热旁路塔压控制系统的控制方案设计中,常会出现两种不合理的流程设置:一种是将热旁路与冷凝液管线混合后再进入回流罐,另一种是热旁路控制阀由固定压差控制.分析了这两种流程设置对精馏塔压力控制系统造成的不利影响:前者会造成精馏塔压力波动和控制不稳定,后者则易造成控制混乱.相应的改正措施:冷凝液和热旁路气体应分别单独从回流罐底、罐顶进料;采用"浮动压差"控制器来控制热旁路控制阀.
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| 关 键 词： | 热旁路控制 流程设置 冷凝器 回流罐 压差控制 |
The Analysis on Two Unreasonable Flowsheet Configurations in the Distillation Column Hot Vapor Bypass Pressure Control Scheme |
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| Liu Chengjun,Xie Guohong,Hu Yuchen.The Analysis on Two Unreasonable Flowsheet Configurations in the Distillation Column Hot Vapor Bypass Pressure Control Scheme[J].Automation in Petro-chemical Industry,2009,45(2):11-13. |
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| Authors: | Liu Chengjun Xie Guohong Hu Yuchen |
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| Affiliation: | China Petroleum Eng.& Construction Co.;East-China Design Branch;Qingdao;266071;China |
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| Abstract: | In the distillation column hot vapor bypass pressure control scheme there are always to appeav two sorts of unreasonable flowsheet configurations: one is that the hot vapor line and the condensate line are mixed together before entering the reflux drum,the other is that the hot vapor bypass control valve is controlled by the fixed pressure difference.The disadvantageous effects caused by these two configurations are analyzed: the former can cause the distillation column pressure fluctuations and instability... |
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| Keywords: | hot vapor bypass control flowsheet configuration condenser reflux drum pressure difference control |
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