Research On CFD Simulation For Erosion Of Industry Pipes

In recent years , great industry pipes accidents occurred frequently ,and the safety of the workers and the benefit were also affected inevitably. Hycrogenation cracking reaction outflow air-cooler (REAC) pipes are suffering from high pressure , hydrogen and such bad working conditions, so accidents easily arise. Some researches show that the erosion destroy of REAC pipes were affected by several complex factors, and two of them , flow condition of reaction outflow and the characters of corrosion medium were key factors . This paper aimed at typical industry pipes such as liner-pipe , elbow etc. and focused on quantitative study about the relation between pipe flow and erosion destroy and also optimize the structures of industry pipes .The main contents of this paper are summarized as follows:1. From the quantitative study of the relation between the liquid flow and erosion characters ,actual effects made by different factors such as the causticity of reaction outflow , operation conditions and flow status are showed clearly;2. Invalidation mechanism of REAC pipes was studied ,and the conclusions fit erosion results;3. Through the specific comparison among several different pipe structures ,we show the more reasonable one and optimize the pipe structure;4. Elbow pipes having different diameter were simulated by FLUENT, and we do some research on the respective effects made by them.The innovations include:1. The method of predicting erosion destroy of industry pipes was advanced ,and we applied FLUENT to simulate pipe flow and are able to determine erosion position quickly.2. By the researches on the specific effects made by different structures of industry pipes ,we summarize a way to optimize pipe structures in gas lines.