水煤浆气化炉新型工艺烧嘴冷却机构的研制和应用  

Development and application of new cooling structure for process burner of coal water slurry gasifier

作　　者：胡振中 毕大鹏 张建胜 Hu Zhenzhong;Bi Dapeng;Zhang Jiansheng(Shanxi Research Institute for Clean Energy,Tsinghua University,Taiyuan Shanxi 030032,China)

机构地区：[1]清华大学山西清洁能源研究院,山西太原030032

出　　处：《煤化工》2021年第5期24-27,43,共5页Coal Chemical Industry

基　　金：山西省科技成果转化引导专项项目(201904D131070);2020年度山西省中央引导地方科技发展资金项目。

摘　　要：针对水煤浆气化炉工艺烧嘴的使用寿命短制约气化系统的连续运行周期问题,从强化换热角度出发,基于烧嘴冷却水夹套的换热原理和计算方法,借鉴3D打印技术理念,设计开发出了一种新型高效换热水冷夹套,将其与传统盘管式和夹套式冷却结构进行了换热效果计算对比,并在某工业化装置进行了工业试烧。模型计算结果表明,在烟气温度2000 K下,新型夹套烧嘴端面内壁温度523 K,为三者中最低;工业试烧结果显示,运行80 d后,烧嘴端面无可见裂纹。The short service life of the coal water slurry gasifier process burner seriously restricted the continuous operation cycle of the gasification system.From the perspective of heat exchange enhancement,based on the heat exchange principle and calculation method of burner water-cooled jacket,a new type of efficient heat exchange water-cooled jacket was designed and developed with 3D printing technology.Moreover,its heat exchange effect was calculated and compared with the traditional coil-type and jacket-type cooling structure,and the trial combustion was carried out in the industrial plant.The model calculation results showed that under the flue gas temperature of 2000 K,the inner wall temperature of the new jacket burner was 523 K,which was the lowest of the three.Also,the industrial test results showed that there was no visible crack at the end face of the burner after 80 days of operation.

关 键 词：水煤浆气化炉 工艺烧嘴 冷却机构 夹套式 盘管式 强化换热 3D打印技术 

分 类 号：TQ545[化学工程—煤化学工程]