2023·02百家争鸣194ModernChemicalResearch当代化工研究2023·02百家争鸣194ModernChemicalResearch当代化工研究高耗点LNG加注站BOG产生原因及降低措施分析*王冕冕(中国石化销售股份有限公司浙江杭州石油分公司浙江310007)摘要:相比传统汽车燃料,液化天然气(LNG)因燃烧过程中产生的污染物少,释放的热量大,被视为高效、清洁能源被广泛应用。由于LNG具有深冷低温、极易气化的特点,导致部分加注站蒸发气(BOG)大量放散,难逃“高耗点站”的现状,既造成能源损耗,同时存在一定潜在危险性,此外BOG中主要成分甲烷是一种温室效应很强的气体,导致加注站碳排放量显著增加。针对当前这类问题,本文重点从进、销、存作业环节剖析了BOG形成的来源,同时从气源、设备工艺、日常运行管理等方面提出了5项有效措施,可在很大程度上降低损耗率,减少碳排放量,能够有效提高社会、经济和环保效益。关键词:LNG;加注站;BOG;真空度;卸车;回收中图分类号:TM621文献标识码:AAnalysisonCausesandReductionMeasuresofBOGinLNGFillingStationswithHighConsumptionPointsWangMianmian(ZhejiangHangzhouPetroleumBranchofSinopecSalesCo.,Ltd.,Zhejiang,310007)Abstract:Comparedwithtraditionalautomotivefuels,liquefiednaturalgas(LNG)iswidelyusedasanefficientandcleanenergysourcebe-causeitproducesfewerpollutantsandreleasesmoreheat.DuetothecharacteristicsofcryogeniclowtemperatureandeasygasificationofLNG,someLNGfillingstationswithalargeamountofevaporatinggas(BOG)cannotescapethefateof“highconsumptionpointstations”.Itcauseenergylossandapotentialrisk,inadditiontocarbonemissionsincreasingsignificantly.Inviewofthecurrentproblems,thispapermainlyanalyzesthesourceofBOGformation,theprocessesofimport,salesandstorage,andputsforwardfiveeffectivemeasuresfromtheaspectsofgassource,equipmentpro-cessanddailyoperationmanagement,whichcanreducethelossratesignificantly,reducecarbonemissions,andeffectivelyimprovesocial,econom-icandenvironmentalbenefits.Keywords:LNG;fillingstation;BOG;vacuumdegree;unload;recovery1.研究背景液化天然气(LiquefiedNaturalGas,LNG),其主要化学成分是甲烷,它无色、无味、无毒且无腐蚀性,LNG是由原料天然气经一系列低温液化工艺处理后获得,体积相当于标况下...