THE CONCEPT OF IMPLEMENTING THE FUNCTION OF REDUCING THE MATERIAL BALANCE UNCONVERGENCE OF HYDROCARBON MEDIA IN THE PRODUCTION OF LIQUEFIED NATURAL GAS

Abstract

This article discusses the problems identified by the author in the implementation of the function of reducing the material balance unconvergence of hydrocarbon media in the medium-tonnage production of liquefied natural gas, and also outlines ways to solve them. The definition of the concept of material balance is given. A review of existing automated systems for balancing the material balance of hydrocarbon media in the production of liquefied natural gas is given. Structural problems that arise during the implementation of the function of balancing the balance are determined. Such influencing errors are described as: error due to the influence of heterogeneity and instability of liquefied natural gas; error due to the unreliability of the determination of residues in technological pipelines and apparatuses; error due to inaccuracy in determining the flow rate of gaseous media at metering units that are part of the licensed technology and gas carrier ships.
 A new concept of the function of balance reduction is described. The requirements for the error of measurement units for hydrocarbon media are given, taking into account the status of the metering unit and the measurement method used. Shown is a material flow diagram of the liquefied natural gas production process. A recommendation is given on how to improve the accuracy of the implementation of the function of reducing the material balance of hydrocarbon media in the production of liquefied natural gas. The place of the automated MES-system of material balance in the structure of production accounting is shown.