炼油技术与工程 ›› 2022, Vol. 52 ›› Issue (3): 37-42.

• 机械设备 • 上一篇    下一篇

连续重整装置加热炉改造温度场数值模拟研究及优化

练弢1,练泽平1,刘剑2,毛存彪3,梁栋4   

  1. 1.中海石油宁波大榭石化有限公司,浙江省宁波市 315812; 2.上海浩用工业炉有限公司,上海市 201203; 3.北京欧谊德科技有限公司,北京市 100097; 4.中石化广州工程有限公司,广东省广州市 510620
  • 收稿日期:2021-12-22 出版日期:2022-03-15 发布日期:2022-03-16
  • 作者简介:练弢,工程师,大学本科,2000年毕业于郑州大学工业工程专业,主要从事石油化工技术管理工作。联系电话:057456777726,E-mail:liantao@cnooc.com.cn。

Numerical simulation research and optimization of temperature field in CCR heating furnace

Lian Tao1, Lian Zeping1, Liu Jian2, Mao Cunbiao3, Liang Dong4   

  1. 1.CNOOC Ningbo Daxie Petrochemical Co., Ltd., Ningbo,Zhejiang 315812;  2.Shanghai Haoyong Industrial Furnace Co., Ltd., Shanghai 201203;  3.Beijing OET Technology Co., Ltd., Beijing 100097; 4.SINOPEC Guangzhou Engineering Co., Ltd., Guangzhou, Guangdong 510620
  • Received:2021-12-22 Online:2022-03-15 Published:2022-03-16

摘要: 针对某企业连续重整装置反应进料加热炉部分炉管管壁温度较高的问题,采用数值模拟方法对加热炉和燃烧器建模并还原计算,对模拟计算出的炉膛烟气速度场、温度场及炉管表面温度分布进行定性和定量分析,发现炉管管壁最高温度已非常接近炉管材料的极限设计金属温度。研究了影响燃烧器火焰的各种因素,结合加热炉烟气余热系统的升级改造,明确了优化改造方向,优选出了燃烧器结构参数调整方案。改造后的炉膛温度场分布均匀,实现了炉管管壁温度均匀化,同时炉膛温度较改造前降低了15~25 ℃,炉管管壁最高温度降低了20 ℃ 左右,NOx排放浓度得到了有效控制。

关键词: 连续重整装置, 加热炉, 温度场, 数值模拟, 燃烧器结构, 定性分析, 定量分析

Abstract: In view of the high temperature of the furnace tube wall of some furnace tubes in the reaction feedstock heating furnace of the CCR unit in an enterprise, the heating furnace and burner are modeled and reduced by numerical simulation method, and the simulated furnace flue gas velocity field, temperature field and furnace tube surface temperature distribution are analyzed qualitatively and quantitatively. It is found that the maximum temperature of furnace tube wall is very close to the ultimate design metal temperature of furnace tube material. Various factors affecting the burner flame are studied. Combined with the upgrading and transform of the flue gas waste heat system of the heating furnace, the optimization and transformation direction is defined, and the adjustment scheme of the burner structure parameters is optimized. The temperature field distribution of the reformed furnace is uniform, which realizes the homogenization of furnace tube wall temperature. At the same time, the furnace temperature is 15~25 ℃ lower than that before the transformation, the maximum temperature of furnace tube wall is reduced by about 20 ℃, and the emission concentration of NOx is effectively controlled.

Key words: CCR unit, furnace, heating furnace, temperature field, numerical simulation, burner construction, qualitative analysis, quantitative analysis