摘要
利用数值模拟方法研究了炼油过程中延迟焦化管式加热炉内的流动和燃烧过程。计算中未作任何简化,实现了包括燃烧器和炉膛在内的复杂结构网格的划分,选用标准的k ε湍流模型、PDF扩散燃烧模型和离散坐标辐射传热模型,对炉内流动和燃烧过程进行了三维全尺寸的数值模拟,成功地计算出炉膛内的速率场、温度场和各组分的浓度场。该炉采用的燃烧器产生的扁平状火焰,可以均匀加热炉管中的流体,有利于反应的顺利进行。
Numerical simulation of flow and combustion in a delayed coking tubular furnace was carried out. The dividing of the complicated structure grid in the furnace and combustor was generated without simplification. The standard k-Ε turbulent model, the simplified PDF combustion model and the discrete ordinate transfer radiation model were used to simulate the three-dimension flow and combustion inside the furnace chamber. All fields of velocity, temperature and concentration inside the furnace chamber were successfully figured out. The simulation results showed that the combustors used in the furnace with flat shape flame were helpful to heat uniformly the fluid in the pipes.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2004年第6期58-62,共5页
Acta Petrolei Sinica(Petroleum Processing Section)
关键词
延迟焦化
加热炉
燃烧
数值模拟
辐射传热
Coking
Combustion
Computer simulation
Heat transfer
Probability density function
Three dimensional
Turbulent flow
