Research On CFD Simulation For Erosion Destroy Prediction Of Typical Petrifaction Industry Pipes

In recent years, petrifaction industry pipes accidents were occured frequently, it badly affected safe and economic benefits. Hydrogenation cracking reaction outflow air-cooler (REAC) pipes is important devices, it was suffered high pessure, hydrogen and multiphase flow erosion. Badly accidents were easily arose. Research in existence indicates that erosion of REAC pipes were affected aseries of integrative factors, flow status of reaction outflow and consistency distributing of corrosion medium are two key factors. But so far, all researches about erosion phenomenas were just qualitative analysis, these researches did not study quantitative analysis between flow and corrosion by the numbers. This paper mainly aimed at typical petrifaction industry pipes such as liner-pipe, elbow etc. to be simulated by CFD software to quantitative study relation between pipe flow and erosion and optimize pipes structures. The main contents of this paper are summarized as follow:1. Actual infection which causticity of reaction outflow , corporality of multiphase , operation conditions and flow status erosion destroy was opened out by quantitative analyse relation between liquid flow and erosion, opened out;2. Invalidation mechanism of homemade REAC liner pipe was summed up by particular discuss and analyse, the results were fit for actual instance;3. Optimized REAC liner pipe structure was simulated by FLUENT, compared with pristine structure to find more reasonable structure;4. REAC exit elbow was simulated by FLUENT, hydrokinetics factors to explain elbow erosion were summed up;The innovations in the paper are as following:1. A new method to predict erosion destroy of industry pipes was advanced, CFD software was applied to simulate pipe flow to find position where erosion weakness quickly;2. FLUENT was applied to simulate liner pipes which had invalidation case , the actual reason of REAC pipes bursting was found;3. Rules of typical industry pipes erosion destroy was summed up to guide optimized-structure and inspection on line.