液相加氢喷气燃料的贮存安定性能  

Storage Stability of Liquid-Phase Hydrogenating Jet Fuels

作　　者：潘光成[1] 陈庆岭 江磊 唐乳林[2] 陶志平[1] PAN Guangcheng;CHEN Qingling;JIANG Lei;TANG Rulin;TAO Zhiping(Research Institute of Petroleum Processing,SINOPEC,Beijing 100083,China;Changling Company,SINOPEC,Yueyang 414000,China)

机构地区：[1]中国石化石油化工科学研究院,北京100083 [2]中国石化长岭分公司,湖南岳阳414000

出　　处：《石油学报（石油加工）》2021年第3期626-634,共9页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：中国石油化工股份有限公司攻关项目(S111012)基金资助。

摘　　要：按照3号喷气燃料国家标准对中国石化长岭分公司液相加氢喷气燃料(LPHJT)进行全分析,考察了LPHJT的贮存安定性;并对其吸附洗脱出来的不安定性组分进行了元素分析和红外光谱测定,考察了其对喷气燃料热安定性的影响。结果表明:在所考察的1.5 a贮存时间内,与加氢前的喷气燃料原料(LPHJF)相比,未加添加剂的液相加氢喷气燃料,其赛式比色、总酸值、硫醇硫含量(或博士试验)、实际胶质含量、热安定性、水分离指数均得到改善且达到合格要求;而其热安定性和润滑性尽管达到合格要求,但随着贮存时间的延长逐渐变差,压力降从0.10 kPa升至0.28 kPa,磨痕直径从0.78 mm升至0.83 mm。对于加入抗氧剂(AO)的液相加氢喷气燃料,其热安定性达到合格且持续稳定,压力降低至0.04~0.06 kPa;但其润滑性未得到改善。对于加入抗氧剂、抗静电剂(SDA)和抗磨剂(LIA)的液相加氢喷气燃料,其贮存期间各项质量指标全部达到合格且稳定,热安定性压力降维持在0.02~0.04 kPa,磨痕直径维持在0.6 mm。喷气燃料所含不安定性组分除少量含硫、含氮化合物外,主要为酚类、含有羰基的羧酸或酮的含氧化合物、重质芳烃类物质以及上述化合物的聚合物等;液相加氢使得喷气燃料所含不安定性组分减少了71%,不安定性组分使得贮存期间未加入添加剂的液相加氢喷气燃料热安定性趋向变差。Storage stability of the liquid-phase hydrogenating jet fuels(LPHJT) from Changling company of SINOPEC was invested by total analysis according to the No.3 jet fuel national standard. The unstable components in the jet fuels were adsorbeluted and determined by elemental analysis and infrared spectrum. The results show that for LPHJT without additives, its saybolt color, total acidity, mercaptan sulfur content(or doctor test), existent gum content, thermal stability and water separator characteristics(microseparometer, MSEP) have been improved compared to the jet fuels feedstocks(LPHJF) before hydrogenating, but its thermal stability became poor from 0.10 kPa to 0.28 kPa at filter pressure drop and its lubricity became poor from 0.78 mm to 0.83 mm at wear scar diameter as the storage time increased. For the LPHJT with antioxidants(AO), its thermal stability is always in a good state with 0.04-0.06 kPa of filter pressure drop along with a poor lubricity during storage. For LPHJT with antioxidants, static dissipator additive(SDA) and lubricity improver additive(LIA), all indexes are always in a stable and qualified state with 0.02-0.04 kPa of thermal stability filter pressure drop and 0.6 mm of wear scar diameter. The unstable components in LPHJT reduces by 71% compared with LPHJF, which are mainly phenol, carboxylic acid or ketone, heavy aromatics and polymers, etc. except for a small amount of sulfur-containing and nitrogen-containing compounds. The unstable components lead to the poor thermal stability of LPHJT without additives during storage.

关 键 词：喷气燃料 溶氢 贮存安定性 液相加氢 添加剂 

分 类 号：TE622[石油与天然气工程—油气加工工程]