转化炉炉管热带产生原因分析及处理  

Cause Analysis and Treatment of Heat Belt in Reformer Tube

作　　者：冯利 彭勇 杨秀勤 陈小龙 郝莎莎 Feng Li;Peng Yong;Yang Xiuqin;Chen Xiaolong;Hao Shasha(Chengdu Elpu Gas Products Co.,Ltd.,Chengdu,Sichuan 611930)

机构地区：[1]成都艾尔普气体产品有限公司,四川成都611930

出　　处：《石油化工技术与经济》2024年第4期53-56,共4页Technology & Economics in Petrochemicals

摘　　要：2022年3月某公司合成气制氢装置的转化炉炉管上部3 m处出现热带,且炉管热带区域不断扩大。通过对天然气组分、工艺蒸汽、脱硫效果等的分析,得出天然气中烃类超过设计范围是导致催化剂积碳、转化炉炉管出现热带的原因。为此对转化炉催化剂进行蒸汽消碳,消碳后转化炉炉管热带明显消失,且转化炉炉管最高表面温度比消碳前下降约40 K。为应对天然气组分变重,防止催化剂再次积碳,消碳后采用提高转化炉水碳比的方式运行。In March 2022,a hot zone was found to appear at the upper 3 m of the furnace tube of reformer in a synthetic gas hydrogen production plant of a company,and the hot zone continued to expand.Based on analysis of natural gas components,process steam and desulfurization effect,it is concluded that the hydrocarbon in natural gas exceeds the design range,which leads to the carbon deposition of catalyst and the hot zone in the furnace tube.For this reason,steam carburization was carried out on the reformer catalyst.After carburization,the hot zone of the reformer tube disappeared obviously,and the maximum surface temperature of the reformer tube decreased by about 40 K compared with that before carburization.In order to cope with the weight of natural gas components and prevent the catalyst from accumulating carbon again,the method of increasing the water-carbon ratio of the reformer is adopted after carbon elimination.

关 键 词：炉管 热带 原因分析 消碳 

分 类 号：TK6281[动力工程及工程热物理—生物能]