Coupled simulation of recirculation zonal firebox model and detailed kinetic reactor model in an industrial ethylene cracking furnace

doi:10.1016/j.cjche.2017.03.020

›› 2017, Vol. 25 ›› Issue (8): 1091-1100.DOI: 10.1016/j.cjche.2017.03.020

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Coupled simulation of recirculation zonal firebox model and detailed kinetic reactor model in an industrial ethylene cracking furnace

Zhou Fang, Tong Qiu, Weiguo Zhou

Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

Received:2016-09-22 Revised:2016-11-17 Online:2017-09-11 Published:2017-08-28
Supported by:
Supported by the National Natural Science Foundation of China (U1462206).

Coupled simulation of recirculation zonal firebox model and detailed kinetic reactor model in an industrial ethylene cracking furnace

Zhou Fang, Tong Qiu, Weiguo Zhou

Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

通讯作者: Tong Qiu
基金资助:
Supported by the National Natural Science Foundation of China (U1462206).

Abstract

Abstract: A coupled system simulating both firebox and reactor is established to study the naphtha pyrolysis in an industrial tubular furnace. The firebox model is based on zone method including combustion, radiation, and convection to simulate heat transfer in the furnace. A two-dimensional recirculation model is proposed to estimate the flow field in furnace. The reactor model integrates the feedstock reconstruction model, an auto-generator of detail kinetic schemes, and the reactor simulation model to simulate the reaction process in the tubular coil. The coupled simulation result is compared with industrial process and shows agreement within short computation time.

Key words: Ethylene cracking, Coupled simulation, Tubular furnace, Recirculation zone modeling, Detailed reaction kinetic

摘要： A coupled system simulating both firebox and reactor is established to study the naphtha pyrolysis in an industrial tubular furnace. The firebox model is based on zone method including combustion, radiation, and convection to simulate heat transfer in the furnace. A two-dimensional recirculation model is proposed to estimate the flow field in furnace. The reactor model integrates the feedstock reconstruction model, an auto-generator of detail kinetic schemes, and the reactor simulation model to simulate the reaction process in the tubular coil. The coupled simulation result is compared with industrial process and shows agreement within short computation time.

关键词: Ethylene cracking, Coupled simulation, Tubular furnace, Recirculation zone modeling, Detailed reaction kinetic

Zhou Fang, Tong Qiu, Weiguo Zhou. Coupled simulation of recirculation zonal firebox model and detailed kinetic reactor model in an industrial ethylene cracking furnace[J]. , 2017, 25(8): 1091-1100.

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Coupled simulation of recirculation zonal firebox model and detailed kinetic reactor model in an industrial ethylene cracking furnace

Coupled simulation of recirculation zonal firebox model and detailed kinetic reactor model in an industrial ethylene cracking furnace

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