NUMERICAL SIMULATION AND STRUCTURE OPTIMIZATION OF UOC TYPE QUENCH BOX

Abstract

Abstract: Based on literature experimental data, the numerical model validation was performed and the accuracy of the selected numerical model was verified. Based on industrial operating conditions, Fluent software was used to simulate the hydrodynamic performance of UOC quench box. The structure optimization of the spacing of contractive-type flow passages and the distance between the screen hole baffle and the square box was conducted. In addition, the baffle was added at the exit of contractive-type flow passage. The results showed that the performance of the optimized quench box is better than that of the basic configuration. The temperature distribution unevenness is reduced by 36.8% and the pressure drop is reduced by 21 Pa. The comprehensive performance of the quench box is greatly improved.

Key words: quench box, numerical simulation, structure optimization, temperature distribution unevenness

CLC Number:

References

[1]张迎恺, 孙丽丽.加氢裂化反应器新型冷氢箱的研究与工程设计[J].石油炼制与化工, 2002, 33(6):58-59
[2]Alvarez A, Ancheyta J, Mu?oz J A D.Comparison of quench systems in commercial fixed-bed hydroprocessing reactors[J].Energy & fuels, 2007, 21(2):1133-1144
[3]Alvarez A, Ramírez S, Ancheyta J, et al.Key role of reactor internals in hydroprocessing of oil fractions[J].Energy & fuels, 2007, 21(3):1731-1740
[4]Tamm P W, Harnsberger H F, Bridge A G.Effects of feed metals on catalyst aging in hydroprocessing residuum[J].Industrial & Engineering Chemistry Process Design & Development, 1979, 20(2):262-273
[5]Robinson P R, Dolbear G E.Hydrotreating and Hydrocracking: undamentals[M]// Practical Advances in Petroleum Processing. 2006:177-218.
[6]王振元.加氢反应器内气液两相流体的分布与混合装置研究[D]. 华东理工大学, 2014.
[7]庞晶晶, 蔡连波.旋流式急冷箱性能试验研究[J].石油化工设备, 2014, 43(3):15-19
[8]王少兵, 毛俊义, 王璐璐.应对原料劣质化的新型高效加氢反应器内构件技术[J].石油炼制与化工, 2016, 47(6):99-102
[9]马成国, 赵志海, 师峰.软件在新型冷氢箱开发中的应用[J].炼油技术与工程, 2012, 42(1):29-33
[10]吴德飞, 孙丽丽, 李浩, 等.型冷氢箱气液两相混合与传热的放大性能计算[J].石油炼制与化工, 2005, 36(9):66-69
[11]Huang Q, Yang C, Yu G, et al.CFD simulation of hydrodynamics and mass transfer in an internal airlift loop reactor using a steady two-fluid model[J].Chemical Engineering Science, 2010, 65(20):5527-5536
[12]叶文源.加氢反应器结构的初步探讨[J].炼油设备设计, 1981(01):17-23.[J].加氢反应器结构的初步探讨, 1981, (1):17-23
[13]肖作善.工程数据处理及其微机电算[M]. 水利电力出版社, 1990.
[14]Jakobsen H A, Lindborg H, Dorao C A.Modeling of bubble column reactors: progress and limitations[J].Industrial & engineering chemistry research, 2005, 44(14):5107-5151
[15]蔡连波, 盛维武, 李保锋.加氢反应器内构件急冷箱的试验研究[J].石油化工设备技术, 2003, 19(1):10-13