环己酮装置脱氢加热炉系统改造探究  

Study on Revamp of Cyclohexanone Dehydrogenation Heating Furnace System

作　　者：但加飞 周卫 Dan Jiafei;Zhou Wei(SINOPEC Hunan Petrochemical Co.,Ltd.,Yueyang,Hunan 414014,China)

机构地区：[1]中石化湖南石油化工有限公司,湖南岳阳414014

出　　处：《石油石化绿色低碳》2024年第4期73-78,共6页Green Petroleum & Petrochemicals

摘　　要：针对某石化公司环己酮装置脱氢加热炉运行中存在的热效率低、热媒熔盐介质危害性大、系统安全性差等问题,分析原因并采取相应措施。炉体结构不合理、燃烧器低效、炉管积灰、排烟温度高导致脱氢加热炉运行热效率低;熔盐为危险化学品且高温运行下热媒熔盐介质危害性大;熔盐存在堵塞管道、泄漏风险和明火安全距离不足,系统安全性差。通过优化设计脱氢加热炉主体结构、应用新型热媒介质、更新燃烧器及控制系统、优化工艺系统流程等多项升级改进措施,脱氢加热炉平均热效率由88.13%提升至94.32%,燃料气消耗降低0.010 t/t环己酮,系统自动化水平大幅提升,满足了节能降耗和设备安全可靠运行要求,对化工生产中采用熔盐作为热传递介质的工艺装置改造具有借鉴和推广意义。Aiming at the problems such as low thermal efficiency,great harm of molten salt medium and poor system safety in the dehydrogenation furnace of cyclohexanone unit in a petrochemical company,the causes are analyzed and corresponding measures are taken with good effect.The results show that the main reasons for the low operating thermal efficiency of dehydrogenation furnace are unreasonable furnace structure,low burner efficiency,ash accumulation in furnace tube and high smoke exhaust temperature.The main reason for the great harm of the heat medium molten salt is that it is a dangerous chemical and operates in a high temperature environment for a long time.The main reason for the poor safety of the system is that the molten salt has the hidden danger of blocking the pipeline,the risk of leakage and the insufficient safety distance of the open flame.By optimizing the main structure of the dehydrogenation furnace,applying new thermal media,updating the burner and control system,optimizing the process system and other upgrading and improvement measures,the average thermal efficiency of the dehydrogenation furnace is increased from 88.13%to 94.32%,the fuel gas consumption is reduced by 0.010 t/t,and the system automation level is greatly improved.It meets the requirements of energy saving and safe and reliable operation of equipment.It has the significance of reference and popularization in chemical production plant,especially in molten salt heating process plant.

关 键 词：环己酮 脱氢加热炉 技术升级 改造 效果 

分 类 号：TQ234.21[化学工程—有机化工]