膜科学与技术

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Construction and Application of Reliability Model for Hollow-fiber Membrane Gas Separator

Authors： LI Tianlun, WANG Wei, SHI Wenhua, HE Gaohong, XIAO Wu

Units： 1. State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China 2. Qingyang Chemical Industry Corporation, Liaoyang, Liaoning province, 116024, China

KeyWords： Hollow fiber membrane separator; Reliability; Fault Tree Analysis; fuzzy set theory; Expert Elicitation

ClassificationCode：TQ051.8

year,volume(issue):pagination： 2022,42(2):95-102

Abstract：

Through the analysis of the geometric structure, material characteristics and membrane separation process of the hollow fiber membrane separator, 12 basic events were identified such as failure of packaging adhesive, corrosive gas, and low operating temperature, as well as 9 intermediate events such as seal failure, shell corrosion, membrane filament failure, etc., with membrane separator failure as the top event, using the failure mode mechanism and fuzzy set theory to establish the fuzzy fault tree model of the gas membrane separator. An expert questionnaire for the occurrence of basic events was designed, and feedback from 10 experts was selected, combining the triangular fuzzy number and the trapezoidal fuzzy number, using similarity aggregation method to calculate the occurrence probability of basic events. Through the qualitative analysis of the fault tree model, the minimum cut set and the minimum path set of the fault tree are determined, and the structural importance of the basic events is sorted. Based on the ranking calculation of F-VI and RRW of the minimum cut set of the fault tree, it is determined that the minimum cut set with the highest importance is MC9 (organic solvent vapor condensation) and the minimum cut set with the lowest importance is MC6 (membrane fiber swelling). Through the quantitative analysis of the fuzzy fault tree model, the top event failure probability of the gas membrane separation is calculated to be 3.285%, which accords with the empirical value. The structural importance, probability importance and critical importance of the basic events were analyzed and sorted, and the top three basic events were determined to be defogger failure, excessive operating pressure, and dissolution of the adhesive caused by organic condensate.

Funds：

国家基金委创新研究群体 (22021005)；国家重点研发计划项目（2019YFE0119200）。

AuthorIntro：

李天伦(1997－)，男，山东烟台人，本科生。研究方向：膜分离器可靠性分析

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