大型空分装置纯化系统再生加热器内漏处理及应急操作  

Treatment of Inner Leakage in the Regenerative Heater of a Large-scale Air Separation Unit Purification System and Emergency Operations

作　　者：饶海朋 姚金燕 RAO Haipeng;YAO Jinyan(CHN Energy Ningxia Coal Industry Co.,Ltd.No.1 Olefins Branch,Lingwu,Ningxia 750408;Coal-to-Oil Chemical Qualitgy Test and Measurement Center of CHN Energy Ningxia Coal Industry Co.,Ltd.,Yinchuan,Ningxia 750001)

机构地区：[1]国家能源集团宁夏煤业公司烯烃一分公司,宁夏灵武750408 [2]国家能源集团宁夏煤业公司煤制油化工质检计量中心,宁夏银川750001

出　　处：《能源科技》2024年第3期72-74,共3页Energy Science and Technology

摘　　要：纯化系统是空分装置的重要组成部分,主要作用是除去空气中的水分、二氧化碳、乙炔、碳氢化合物等。正常运行期间,1台纯化器吸附,另1台纯化器再生,2台交替运行。纯化器再生加热阶段使用蒸汽再生加热器提高再生气温度,如果再生加热器内漏,蒸汽会漏入再生气中,造成再生气露点上涨,含水量增加,影响纯化系统吸附剂再生效果,造成吸附剂吸附能力下降。纯化器出口二氧化碳含量升高,影响空分装置安全稳定运行,严重时需要停车处理。为消除再生加热器内漏对纯化系统运行的影响,利用再生间隔时间对再生加热器进行泄漏排查、隔离,并采用蒸汽加热器与电加热器并行模式应急操作方法,保证了纯化系统再生彻底,空分装置正常运行。The purification system is an essential component of the air separation unit,primarily responsible for removing moisture,carbon dioxide,acetylene,hydrocarbons,and other impurities from the air.During normal operation,one purifier undergoes adsorption while the other undergoes regeneration,running in an alternating mode.During the regeneration heating phase,steam is used to raise the temperature of the regeneration gas.If there is a leak in the regenerative heater,steam may leak into the regeneration gas,causing an increase in the dew point and moisture content of the regeneration gas,affecting the effectiveness of the purification system's adsorbent regeneration,leading to a decrease in adsorption capacity.As a result,the outlet carbon dioxide content of the purifier increases,affecting the safe and stable operation of the air separation unit.In severe cases,shutdown procedures may be necessary.To eliminate the impact of leakage in the regenerative heater on the operation of the purification system,leakage inspection and isolation of regenerative heater are conducted during the regeneration interval.Additionally,an emergency operation method is adopted by using a parallel mode of steam heater and electric heater,ensuring the thorough regeneration of the purification system and normal operation of the air separation unit.

关 键 词：纯化系统 再生加热器 隔离 应急操作 

分 类 号：TB662[一般工业技术—制冷工程]