液硫池蒸汽盘管结构型式  

STRUCTURAL TYPES OF STEAM COILS FOR SULFUR PITS

作　　者：庞亮 Pang Liang(SINOPEC Engineering Incorporation,Beijing,100101)

机构地区：[1]中国石化工程建设有限公司,北京100101

出　　处：《石油化工设计》2024年第4期54-57,I0003,I0004,共6页Petrochemical Design

摘　　要：硫黄回收装置的液硫储存设备为维持其液态硫的稳定状态需要配备蒸汽盘管型式的伴热系统,该盘管布置于液硫池或液硫储槽的底部,根据其结构的不同可分为直管式和盘管式,2种结构型式加工制造方式和换热面积略有差异。液硫池属于微负压设备,液硫液面与池顶盖板间有少量聚集的剧毒硫化氢气体,所以穿过液硫池盖板的蒸汽盘管需要密封避免有毒气体泄漏,其密封方式可分为混凝土二次浇筑、法兰盖、直埋3种。液硫池内存在着S、SO_(2)、SO_(3)和H_(2)O等物质,根据不同的操作工况和气液相空间产生了3种不同的腐蚀环境,在不同的腐蚀环境中蒸汽引入管、凝结水引出管以及蒸汽盘管选用不同的材质。In order to maintain the stable state of liquid sulfur,the liquid sulfur storage equipment of sulfur recovery unit needs to be equipped with steam coil type heat tracing system.The coil is arranged at the bottom of sulfur pit or liquid sulfur storage tank.It can be divided into straight pipe type and coil type according to its structure,and there are slight differences in the processing and manufacturing methods and heat exchange area of the two structural types.Sulfur pit belongs to micro negative pressure equipment,and there is a small amount of highly toxic hydrogen sulfide between the liquid sulfur level and the cover plate of sulfur pit.Therefore,the steam coil passing through the cover plate needs to be sealed to avoid toxic gas leakage,and the sealing methods can be divided into secondary concrete pouring,flange cover and direct burial.There are S,SO_(2),SO_(3) and H_(2)O in the sulfur pit.According to different operation conditions and gas-liquid phase space,three different corrosion environments are generated,and different materials are selected for the steam inlet pipe,condensate outlet pipe and steam coil in different corrosion environments.

关 键 词：液硫池 蒸汽盘管 液硫 硫黄回收 密封 

分 类 号：TE96[石油与天然气工程—石油机械设备] TQ125.11[化学工程—无机化工]