Dynamic analysis and optimization of flare network system for topside process of offshore plant

Jo, Yeonpyeong; Cho, Yongheon; Hwang, Sungwon

doi:10.1016/j.psep.2019.12.008

Cited by 13 publications

(9 citation statements)

References 12 publications

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“…Although a lower density counterbalances a higher velocity, the velocity dominates since it is a squared term. Jo et al (2020) also observed that in some flare lines, the Mach numbers calculated in a dynamic simulation exceeded those from a steady-state simulation.…”

Section: Facility Bmentioning

confidence: 85%

Revealing Hidden Debottlenecking Potential in Flare Systems on Offshore Facilities Using Dynamic Simulations -- a Preliminary Investigation

Somozas¹,

Nielsen²,

Maschietti³

et al. 2020

Preprint

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Three flare systems are modeled and total plant depressurization is investigated using dynamic simulations in order to access the debottlenecking potential. Usually steady-state simulation of the flare network is used for sizing and rating of the flare system. By using dynamic simulations effects from line packing in the flare system can be studied. The results show that peak flow during a dynamic simulations is significantly lower than the peak flow used in a steady-state case. <br>The three systems investigated span a wide range in flare system size, both in terms of number of process segments disposing into the flare network, in terms of peak design rate and the flare network pipe dimensions and total hold-up volume. Generally, it is observed that the larger the flare system, the larger debottlenecking potential.

show abstract

Section: Facility Bmentioning

confidence: 85%

Revealing Hidden Debottlenecking Potential in Flare Systems on Offshore Facilities Using Dynamic Simulations -- a Preliminary Investigation

Somozas¹,

Nielsen²,

Maschietti³

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

Section: Facility Bmentioning

confidence: 85%

Revealing hidden debottlenecking potential in flare systems on offshore facilities using dynamic simulations – A preliminary investigation

Somozas

Nielsen

Maschietti

et al. 2020

Journal of Loss Prevention in the Process Industries

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Three flare systems are modeled and total plant depressurization is investigated using dynamic simulations in order to access the debottlenecking potential. Usually steady-state simulation of the flare network is used for sizing and rating of the flare system. By using dynamic simulations effects from line packing in the flare system can be studied. The results show that peak flow during a dynamic simulations is significantly lower than the peak flow used in a steady-state case. The three systems investigated span a wide range in flare system size, both in terms of number of process segments disposing into the flare network, in terms of peak design rate and the flare network pipe dimensions and total holdup volume. Generally, it is observed that the larger the flare system, the larger debottlenecking potential.

show abstract

“…For conventional relief valves, the allowable back pressure is typically limited to about 10% of the minimum relief valve upstream set pressure [1,8,9]. Several studies have been reported on the impact of back pressure on pressure safety valves in flare systems [1,2,3,5,6,9,10,11]. However, no studies have been in the relevant current extant literature on the effects of high back pressure (HBP) on the pressure safety valves of the KRPC flare system.…”

Section: Introductionmentioning

confidence: 99%

Modelling and evaluation of the effects of high back pressure (HBP) on refinery Flare System network

Sukairaji¹,

Zaria²,

Mohammed-Dabo³

2021

Safety Engineering

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Safety and reliability of the flare system are often affected by High Back-Pressure (HBP). The primary aim of this study is to simulate a steady-state model of flare system using Aspen Flare System Analyzer and with the aid of real plant data generated from Kaduna Refining and Petrochemical Company (KRPC) Ltd, Nigeria. Three credible scenarios (normal operation/surplus fuel, cooling water failure and power failure) were considered. The results showed that the steady-state model of flare system for normal operation (Surplus Fuel), cooling failure and power failure scenario and the flare system meet performance requirements at a system back pressure of 1.01325 bar, except for cooling water failure scenario which showed the occurrence of high fluid velocity and momentum (rhoV 2). Also, flare operation at normal back pressure, for all three scenarios does not exceed design and operational limits. The work recommends that KRPC managers should review options for reducing HBP particularly for cooling failure and power failure scenarios such that the back pressure would not exceed 10% of set pressure for the conventional valves.

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Dynamic analysis and optimization of flare network system for topside process of offshore plant

Cited by 13 publications

References 12 publications

Revealing Hidden Debottlenecking Potential in Flare Systems on Offshore Facilities Using Dynamic Simulations -- a Preliminary Investigation

Revealing Hidden Debottlenecking Potential in Flare Systems on Offshore Facilities Using Dynamic Simulations -- a Preliminary Investigation

Revealing hidden debottlenecking potential in flare systems on offshore facilities using dynamic simulations – A preliminary investigation

Modelling and evaluation of the effects of high back pressure (HBP) on refinery Flare System network

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