Transactions of Tianjin University

, Volume 24, Issue 2, pp 152–159 | Cite as

Influence of Orifice Position Deviations on Distribution Performance of Gravity-Type Liquid Distributor Analyzed Through Mathematical Pathway

  • Jinsheng Sun
  • Zhiwei Zhang
  • Chengtian Cui
  • Tianpei Li
  • Sheng Fu
Research Article


The distribution performance of the gravity-type liquid distributor (GTLD) significantly affects column operation efficiency and the consequent product quality. In industrial settings, maldistribution is normally considered to be caused by vertical positional or coplanarity errors stemming from deflections associated with manufacture and installation, or even by excessive weight. The lack of estimation protocols or standards impedes the description of this error, which influences the corresponding outflow rates. Given this situation, the paper proposes a lumped parameter, orifice position deviation (OPD), to facilitate the calculation of the relative discharge rate error (RDRE) based on a formula derivation, which allows the systematic analysis of the influence of a single orifice or weir OPD. The paper introduces a sensitivity factor K as a concise and unified expression in theoretical RDREs for calibrating the influence of OPD on the RDREs of geometrically different orifices and weirs. With respect to the GTLD, a larger K indicates the need for more strict OPD requirements. The paper verifies that the extent of GTLD outflow nonuniformity is associated with diverging tendencies regarding its morphology, especially in the orifice and weir, which can be determined using our proposed procedures.


Liquid distributor Installation Orifice position deviation Relative discharge rate error Sensitivity factor 

Supplementary material

12209_2017_78_MOESM1_ESM.docx (88 kb)
Supplementary material 1 (DOCX 88 kb)


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Copyright information

© Tianjin University and Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  • Jinsheng Sun
    • 1
  • Zhiwei Zhang
    • 1
  • Chengtian Cui
    • 1
  • Tianpei Li
    • 1
  • Sheng Fu
    • 1
  1. 1.School of Chemical Engineering and TechnologyTianjin UniversityTianjinChina

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