%0 Conference Paper
%A Shafiq, U.
%A Shariff, A.M.
%A Babar, M.
%A Ali, A.
%D 2018
%F scholars:9442
%I Institute of Physics Publishing
%K Accidents; Computer software; Mixtures; Orifices; Phase transitions; Pressure relief valves; Pressure vessels; Process engineering; Solidification, CO2 capture; Cryogenic conditions; Depressurizations; High-pressure vessel; Phase behavior change; Pressurized vessels; Simulation studies; Temperature and pressures, Carbon dioxide
%N 1
%R 10.1088/1757-899X/458/1/012077
%T A study on blowdown of pressurized vessel containing CO 2 /N 2 /H 2 S at cryogenic conditions
%U https://khub.utp.edu.my/scholars/9442/
%V 458
%X At times, CO 2 capture and sequestration from the gaseous mixture have to be done at high pressure and high concentration of CO 2 in vessels and pipelines. During depressurization of CO 2 mixture from high pressure vessel, the chances of solidification increase and the mixture undergo sudden complex phase behavior changes that can lead to accidental events. By avoiding solidification and controlling the complex phase transitions, the chances of accident and unscheduled breakdowns can be minimized. In this paper, a simulation study is presented for the depressurization of highly pressurized vessel containing the ternary mixture of CO 2 /N 2 /H 2 S. The simulation is performed over different blowdown valves with orifice sizes of 4.325 mm, 6.325 mm, and 8.325 mm using BLOWDOWN software package in Aspen HYSYS® V9 to predict the phase behavior of mixture and changes in the temperature and pressure. The results indicate that the chances of an accident are minimized by avoiding the solidification during depressurization process using blowdown valve with an orifice diameter of 4.325 mm. © Published under licence by IOP Publishing Ltd.
%Z cited By 14; Conference of 5th International Conference on Process Engineering and Advanced Materials, ICPEAM 2018 ; Conference Date: 13 August 2018 Through 14 August 2018; Conference Code:143521