空分设备氩固化的机理及其预防和消除  

Mechanism of argon solidification in air separation plant and its prevention and elimination

作　　者：孙全海[1] Sun Quanhai(NanjingBOC-YPC Gases Co., Ltd., No. 169, Yixi Road, Nanjing Chemical lndustry Park, Nanjing 210048, Jiangsu, P. R. China)

机构地区：[1]南京扬子石化比欧西气体有限责任公司,江苏省南京化工园区乙烯路169号210048

出　　处：《深冷技术》2018年第3期35-40,共6页

摘　　要：讨论粗液氩的凝固点随其中氧和氮含量变化的关系，指出在低压下液化纯氩的固化风险较高，冷箱内液氮泄漏可能使管线中的氩冻结堵塞。分别讨论了粗氩冷凝器、精氩冷凝器和氩再液化器中氩固化冻结的条件，提出了预防和消除氩固化的措施。Here, the relationship of the variation of the freezing point of crude liquefied argon with its content of oxygen and high risk of nitrogen is discussed. It is pointed out that at low pressure the pure liquefied argon is involved with a freezing risk, and the leakage of liquefied nitrogen in the cold box would freeze and block the argon in the pipeline. The solidification and and argon re-liquefier is discussed solidification are proposed. freezing condition of the argon in crude argon condenser, fine argon condenser separately, and the measures for prevention from and elimination of argon the

关 键 词：空分设备 粗液氩 凝固点 氩固化 

分 类 号：TQ116.43[化学工程—无机化工]