摘要
氢气的火灾危险性为甲类,氧气的火灾危险性为乙类。硫磺回收装置属于甲类火灾危险装置,既有火灾、爆炸危险性,又易发生硫化氢中毒事故(事件)。氢气易燃易爆,氧气具有助燃性和氧化性,富氧CLAUS工艺引入氧气后增加了硫磺回收装置火灾和爆炸的风险。氢气和氧气管道的工艺设计要控制适宜的流速,管道、阀门的设计要合理选材(型),设备平面布置和管道设计要严格执行GB 50160-2008《石油化工企业设计防火标准》(2018年版)的相关要求。富氧CLAUS工艺采用富氧空气(氧的体积分数大于23.5%)管道,可参照执行JB/T 5902-2015《空气分离设备用氧气管道技术条件》。氢气管道的防雷接地最大冲击电阻为10Ω,防静电最大接地电阻为10Ω,氧气管道的防静电最大接地电阻为10Ω。
The fire risk of hydrogen is class A,and that of oxygen is class B.Sulfur recovery unit belongs to class A fire hazard device,which has fire and explosion risks and is prone to hydrogen sulfide(H2S)poisoning accidents(events).Hydrogen is inflammable and explosive,and oxygen has combustion supporting and oxidizing properties.The introduction of oxygen in oxygen enriched CLAUS process increases the risk of fire and explosion in sulfur recovery unit.The process design of hydrogen and oxygen pipelines shall control the appropriate flow rate,the design of pipelines and valves shall be reasonable in material selection(type),and the design of equipment layout and piping design shall strictly comply with the relevant requirements of GB 50160—2008"the fire protection standard for the design of petrochemical enterprises"(Revised edition 2018).The oxygen enriched air(the volume fraction of oxygen is more than 23.5%)pipeline is used in the oxygen enriched CLAUS process,which can refer to the technical conditions of JB/T 5902—2015"oxygen pipeline for air separation equipment".The maximum impact resistance of lightning protection grounding of hydrogen pipeline is 10Ω,the maximum static resistance of grounding is 10Ω,and the maximum static resistance of oxygen pipeline is 10Ω.
作者
胡敏
Hu Min(SINOPEC Guangzhou Engineering Co.,Ltd.,Guangzhou,Guangdong 510620)
出处
《炼油技术与工程》
CAS
2020年第6期61-64,共4页
Petroleum Refinery Engineering
关键词
硫磺回收
工艺管道
氢气
富氧CLAUS工艺
氧气
标准
流速
sulfur recovery
process pipeline
hydrogen
oxygen enriched CLAUS process
oxygen
standard
flow rate
