液态和超临界态CO_(2)计量研究  

Liquid and Supercritical CO_(2) Metrology Studies

作　　者：田京山[1] 孙启昌[1] Tian Jingshan;Sun Qichang(Sinopec Petroleum Engineering Corporation,Automatic control and Communication Department,Dongying,257026,China)

机构地区：[1]中石化石油工程设计有限公司自控通信所,山东东营257026

出　　处：《石油化工自动化》2023年第3期63-67,共5页Automation in Petro-chemical Industry

摘　　要：由于液态和超临界CO_(2)的密度与温度、压力成函数关系,在不同温度、压力下密度变化较大,因此一般的体积计量误差较大,应采用质量流量计量。通过流量计选型和比较,确定适用的流量计包括科里奥利质量流量计和V锥流量计。研究了CO_(2)密度实时修正算法,分别介绍了计量调流试验装置、计量精度计算方法、密度实时计算测试、密度补偿效果测试等内容,经现场试验验证了质量流量计的测量效果,达到了预期要求。Since the density of liquid and supercritical CO_(2) is a function of temperature and pressure.The density varies greatly under different temperatures and pressures.Therefore,the general volume measurement error is large.Mass flow measurement should be used.Through type selection and comparison of flow meters,suitable flow meters including Coriolis mass flow meters and V cone flow meters are determined.The real-time correction algorithm for CO_(2) density is studied.The metering test device,metering accuracy calculation method,density real time calculation test and density compensation result test and so on are introduced individually.The measurement result is verified for the mass flow meter with field test,and the expected results have been achieved.

关 键 词：CO_(2)密度修正 质量流量 科里奥利质量流量计 V锥流量计 

分 类 号：TH814[机械工程—仪器科学与技术]