Problem of gas hydrate formation in gas transmission and regulating system and the method to overcome this problem

Abstract

Gu~ hydrute~ <Ire two or multi-component crystalline materials formed when free "Inter is available in hydrocarbon gases at reduced lemperature. When hydwles are formed in the transmission line of natural gas, they reduce the flow efficiency by reducing the effective diameter of the pipe and also create problems in sensing devices of regulating system. ]n winter ~euson. .Ialalabad G"" T & D System Ltd. faces II severe gas regulation problem from the f0l1l1ation of gas hydrate at Beani Bazar Gas Regulating Station. When the waler vapor and condensate containing gil:>, coming Irom Beunibazar gas field, is expanded from 1050 \0 550 p~igin regulating station, there occurs a 101 of temperature reduction and formation of gas hydrate in sensing devices. In this study, gas hydrate and it phase behaviors arc described at \'arious temperature and pressure and some techniques arc discussed to overcome the probl~m of gus hydrate formation. As gas consumption in Beanih<var Gas Regulating Station is very Jow, the economically viable technique would be de-icing ,ystem by alcohol injection. Liquid separation system may apply to improve the effectiveness of the applicable method for prevention of ga, hydrate /olTIlation problem, Hydrate formation may be reduced. if the ~et prc~sllrc of 1" cut r~gulating stream in Bcanibazar gas station is raised up.