首页> 外文期刊>中国化学工程学报(英文版) >Enhanced temperature difference control of distillation columns based on the averaged absolute variation magnitude
【24h】

Enhanced temperature difference control of distillation columns based on the averaged absolute variation magnitude

机译:基于平均的绝对变化幅度提高蒸馏塔的温差控制

获取原文
获取原文并翻译 | 示例
       

摘要

Temperature difference control(TDC)schemes can clearly suppress the adverse influence of pressure variations on product quality control of various distillation columns(DCs)by employing temperature differences(TDs)between the sensitive stage temperature(T_(S))and reference stage temperature(T_(R)),i.e.,T_(S)-T_(R),to infer the controlled product qualities.However,because the TDC scheme has failed to specially take the corresponding relationship between the TD employed in each control loop and the controlled product quality into account,it may suffer from relatively large steady-state errors in the controlled product qualities.To address this problem,an enhanced TDC(ETDC)scheme is proposed in the current article,in which an enhanced TD(ETD),i.e.,T_(S)-α×T_(R),is employed to replace the conventional TD for each control loop.While the locations of the sensitive and reference stages of the ETD are respectively determined according to sensitivity analysis and SVD analysis,the adjusted coefficientαis set to be the ratio between the averaged absolute variation magnitudes(AAVMs)of the T_(S)and T_(R)so that the relationship between the T_(S)and T_(R)can be appropriately coordinated.With reference to the operations of three different distillation systems,i.e.,one conventional DC distilling an ethanol(E)/butanol(B)binary mixture,one conventional DC distilling an E/propanol(P)/B ternary mixture,and one dividing-wall distillation column distilling an E/P/B ternary mixture,the performance of the ETDC scheme is assessed by compared with the conventional TDC scheme and the double TD control(DTDC)scheme.The dynamic simulation results show that the ETDC scheme is better than the conventional TDC scheme with reduced steady-state errors in the controlled product qualities and improved dynamic responses,and is comparable with the DTDC scheme despite the less temperature measurements are employed.

著录项

  • 来源
    《中国化学工程学报(英文版)》 |2021年第1期|266-278|共13页
  • 作者单位

    College of Information Science and Technology Beijing University of Chemical Technology Beijing 100029 China;

    College of Information Science and Technology Beijing University of Chemical Technology Beijing 100029 China;

    College of Information Science and Technology Beijing University of Chemical Technology Beijing 100029 China;

    College of Information Science and Technology Beijing University of Chemical Technology Beijing 100029 China;

    College of Information Science and Technology Beijing University of Chemical Technology Beijing 100029 China;

    College of Information Science and Technology Beijing University of Chemical Technology Beijing 100029 China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-19 04:56:42
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号