Analysis of Flow-induced Noise Characteristics of Ethylene Cracking Furnace Tubes before and after Coking

Document Type : Regular Article


1 School of Mechanical Engineering and Rail Transit, Changzhou University, Changzhou 213164, Jiangsu, China

2 Jiangsu Key Laboratory of Green Process Equipment, Changzhou 213164, Jiangsu, China

3 School of Safety Science and Engineering, Changzhou University, Changzhou 213164, Jiangsu, China

4 Wuxi Liai Machinery Manufacturing Co., Ltd., Wuxi 214111, Jiangsu, China



This paper presents a comprehensive investigation of flow-induced noise characteristics in ethylene cracking furnace tubes, covering both pre- and post-coking conditions. Large-eddy simulation (LES) was employed in conjunction with a generalized Lighthill’s acoustic analogy model. The results indicate that noise sources can be classified as dipole acoustic sources, with energy primarily concentrated ranged from 300 to 1500 Hz, in comparison to standard conditions. The primary location of the acoustic source was identified in the region commonly referred to as the “necking” of the furnace tube, demonstrating a strong correlation with turbulence intensity near the tube wall. As the coke layer thickness in the furnace tube increased from 5 mm to 15 mm, both the sound power level and turbulence intensity exhibited significant growth. Specifically, the sound power level increased by 60.5% while the turbulence intensity increased by 58.5%. Variations in the overall sound pressure level (OASPL) curve measured within the tube could be utilized to assess coking levels. Significant peaks in the OASPL curve were observed as the furnace tube underwent substantial coking, with coke layer thicknesses of 10 mm and 15 mm. The corresponding OASPL values recorded were 79.25 dB and 119.08 dB, respectively. The findings of this work offer significant insights that may contribute to enhanced safety measures in the operation of ethylene cracking furnace tubes.


Main Subjects

Amini, E., Peyghambarzadeh, S. M., Zarrinabadi, S., & Hashemabadi, S. H. (2022). Simulation of heat transfer and fluid flow of hot oil in radiation section of an industrial furnace considering coke deposition. Journal of Thermal Analysis and Calorumetry, 147(14), 4821-4835.
ANSYS, ANSYS 2020 R2 Theory Guide (2020). Technical Report. ANSYS Fluent Theory Guide, V.20.2.
Barik, A. K., Satapathy, P. K., & Sahoo, S. S. (2016). CFD study of forced convective heat transfer enhancement in a 90° bend duct of square cross section using nanofluid. Sādhanā, 41(7), 795-804.
Basso, F. O., Franco, A. T., & Pitz, D. B. (2022). Large-eddy simulation of turbulent pipe flow of Herschel-Bulkley fluids-Assessing subgrid-scale models. Computers & Fluids, 224, 105522.
Haldar, B., & Shukla, A. (2017). A Review on heat transfer and fluid flow within u-pipe and bend pipe. Engineering-PRC, 3(4), 319-325.
Chen, G., Liang, X. F., Zhou, D., Li, X. B., & Lien, F. S. (2021). Numerical study of flow and noise predictions for tandem cylinders using incompressible improved delayed detached eddy simulation combined with acoustic perturbation equations. Ocean Engineering, 224, 108740.
Chen X. Q., Luo Y., Chen Y. K., & Long L. (2023). Failure analysis of overheated coil leakage in ethylene cracking furnace. Engineering Failure Analysis, 152, 10746.
Coombs, J. L., Schembri, T. J., & Zander, A. C. (2020). Pipeline blowdown noise levels and noise modelling. Applied Acoustic, 168, 107405.
Dong, Q. L., Xu, H. Y., & Ye, Z. Y. (2018). Numerical investigation of unsteady flow past rudimentary landing gear using DDES, LES and URANS. Engineering Applications of Computational Fluid Mechanics, 12(1), 689-710.
Fakhroleslam, M., & Sadrameli, S. M. (2020). Thermal cracking of hydrocarbons for the production of light olefins; a review on optimal process design, operation, and control. Industrial & Engineering Chemistry Research, 59(27), 12288-12303.
Glegg, S., & Devenport, W. (2017). Chapter 4 - Lighthill's acoustic analogy. In Glegg, S. & Devenport, W. (Eds.), Aeroacoustics of Low Mach Number Flows (pp. 73-79) Academic Press.
Han, T., Wang, L., Cen, K., Song, B., Shen, R. Q., Liu, H. B., & Wang, Q. S. (2020). Flow-induced noise analysis for natural gas manifolds using LES and FW-H hybrid method. Applied Acoustic, 159, 107101.
Han, Z. Y., Xie, G. S., Cao, L. W., & Sun, G. H. (2019). Material degradation and embrittlement evaluation of ethylene cracking furnace tubes after long term service. Engineering Failure Analysis, 97, 568-578.
IEA. (2021). Global Energy Review 2021. IEA, Pairs.
Jakobi, D., & Gommans, R. (2007). Corrosion by carbon and nitrogen. In H. J. Grabke & M Schütze (Eds.), Typical failures in pyrolysis coils for ethylene cracking (pp. 259-270). European Federation of Corrosion (EFC) Series.
Ki, H. K., & Gil, H. Y. (2020). Aeroacoustic topology optimization of noise barrier based on Lighthill's acoustic analogy. Journal of Sound and Vibration, 483, 115512.
Lv, F. R., Wang, M., Zhe, C. T., Guo, C., & Gao, M. (2023). Numerical simulation of 3D flow field and flow-induced noise characteristics in a T-Shaped reducing tee junction. Fluid Dynamics & Materials Processing, 19(6), 1463-1478.
Lv, J. W., & Ji, Z. L. (2011). Numerical prediction and experimental measurement of flow noise in variable cross-sectional area pipes. Noise and Vibration Control, 31(1), 166-169.
Mahamulkar, S., Yin, K. H, Agrawal, P. K., Davis, R. J., Jones, C. W., Malek, A., & Shibata, H. (2016). Formation and oxidation/gasification of carbonaceous deposits: A review. Industrial & Engineering Chemistry Research, 55(37), 9760-9818.
Marzik, G., Sato, S. I., & Girola, M. E. (2021). Compressive sensing for perceptually correct reconstruction of music and speech signals. Applied Acoustic, 183, 108328.
Métais, O. (2001). Large-eddy simulations of turbulence. In M. Lesieur, A. Yaglom & F. David (Eds.), New trends in turbulence Turbulence: nouveaux aspects (pp. 113-186). Springer, Berlin, Heidelberg.
Mohammed, A. (2018). CFD analysis for turbulent flow and heat transfer in U-Tube. Journal of Engineering and Applied Sciences, 13, 11122-11134.  DOI:10.3923/jeasci.2018.11122.11134.
Moratilla-Vega, M. A, Lackhove, K., Janicka, J., Xia H., & Page, G. J. (2020). Jet noise analysis using an efficient LES/high-Order acoustic coupling method. Computers & Fluids, 199, 104438.
Mori, M., Masumoto, T., & Ishihara, K. (2017). Study on acoustic, vibration and flow induced noise characteristics of T-shaped pipe with a square cross-section. Applied Acoustics, 120, 137-147. DOI:10.1016/j.apacoust.2017.01.022.
Murugu, S. P., Srikrishnan, A. R., Krishnaraj, B. K., Jayaraj, A., Mohammad, A., & Velamati, R. K. (2022). Acoustic Modeling of Compressible Jet from Chevron Nozzle: A Comparison of URANS, LES and DES Models. Symmetry, 14(10), 1975.
Pan, F. H., & Lan, J. J. (2016, April). Analysis on Influence of Environmental Factors to the Heat Loss of Petrochemical Heating Furnace Wall. 6th International Conference on Electronic, Mechanical, Information and Management Society, Shenyang, China.
Paul, C., Mahmoud, K., & Nicole, K. (2018, November). A computationally efficient approach to predict the acoustic fields from a cylinder in cross flow.  INTER-NOISE and NOISE-CON Congress and Conference Proceedings, Institute of Noise Control Engineering, Ibiza, Spain.
Pittard, M. T., Evans, R. P., Maynes, R. D., & Blotter, J. D. (2004). Experimental and numerical investigation of turbulent flow induced pipe vibration in fully developed flow. Review of Scientific Instruments, 75(7), 2393-2401.
Ren, C. X., Ye, M. L., Wang, X. W., Dong, Z. Q., & Kang, H. C. (2020). Energy saving analysis of mechanical coke cleaning and chemical cleaning for cracking furnace. Ethylene Industry (China), 32(03), 39-41.
Ren, Y., Qin, Y. X., Pang, F. Z., Wang, H. F., Su, Y. M., & Li, H. C. (2023). Investigation on the flow-induced structure noise of a submerged cone-cylinder-hemisphere combined shell. Ocean Engineering. 270, 113657.
Rossi, F., Rovaglio, M., & Manenti, F. (2019). Mathematical modelling of gas-phase complex reaction systems: Pyrolysis and combustion. In T. Faravelli, F. Manenti & E. Ranzi (Eds.), Model predictive control and dynamic real-time optimization of steam cracking units (pp. 873-897). Computer Aided Chemical Engineering.
Shui, Q. X., Duan, C. E., Wu, X. Y., Zhang, Y. W., Luo, X. L., Hong, C., He Y. P., Wong, N. H., & Gu Z. L. (2020). A hybrid dynamic Smagorinsky model for large eddy simulation. International Journal of Heat and Fluid Flow, 86, 108698.
Solaimany Nazar, A. R., Banisharifdehkordi, F., & Ahmadzadeh, S. (2016). Mathematical modeling of coke formation and deposition due to thermal cracking of petroleum fluids. Chemical Engineering & Technology, 39(2), 311-321.
Su, X., Wu, Y., Pei, H., Gao, J., & Lan, X. Y. (2016). Prediction of coke yield of FCC unit using different artificial neural network models. China Petroleum Processing and Petrochemical Technology, 18, 102-109.
Sun, X. F., & Wang, X. Y. (2021). Fundamentals of Aeroacoustics with Applications to Aeropropulsion Systems. Shanghai Jiao Tong University Press Aerospace Series.
Sujatha, C. (2023). Fundamentals of Acoustics. Vibration, Acoustics and Strain Measurement.
Tari, V., Najafizadeh, A., Aghaei, M. H., & Mazloumi, M. A. (2009). Failure analysis of ethylene cracking tube. Journal of Failure Analysis and Prevention, 9(4), 316-322.
Temmerman, L., Leschziner, M. A., Mellen, C. P., & Fröhlich, J. (2003) Investigation of wall-function approximations and subgrid-scale models in large eddy simulation of separated flow in a channel with streamwise periodic constrictions. International Journal of Heat and Fluid Flow, 24(2), 157-180.
Tucker, P. G. (2014). Turbulence and Its modelling. Unsteady Computational Fluid Dynamics in Aeronautics. Springer, Dordrecht.
Valus, M. G., Fontoura, D. V. R., Serfaty, R., & Nunhez, J. R. (2017). Computational fluid dynamic model for the estimation of coke formation and gas generation inside petrochemical furnace pipes with the use of a kinetic net. The Canadian Journal of Chemical Engineering, 95(12): 2286-2292.
Wei, Y. R. (2020). Application and discussion of mechanical decoking technology of furnace. Petroleum Refinery Engineering, 50(08), 22-25. DOI: 10.3969/j.issn.1002-106X.2020.08.006.
Zhang, N., Qiu, T., & Chen, B. Z. (2013). CFD simulation of propane cracking tube using detailed radical kinetic mechanism. Chinese Journal of Chemical Engineering, 21(12), 1319-1331.
Zhang, Y., Miao, Y., Zhang, S. Y., & Zhou, F. Q. (2023). Numerical simulation of acoustic field characteristics of flow-induced noise by coking on inner wall of furnace tube. Journal of Safety and Environment, 8, 1-10. DOI:10.13637/j.issn.1009-6094.2023.0868.
Zhang, Y. O., Zhang, T., Ouyang, H., & Li, T. Y. (2014). Flow-induced noise analysis for 3D trash rack based on LES/Lighthill hybrid method. Applied Acoustic, 79, 141-152.