Quantification of inherent energy resilience of process systems pertaining to a gas sweetening unit

摘要

In contrast to physical failure of process systems, quantification of inherent system energy resilience has been carried out considering performance failure of process systems under this work. The inherent energy resilience for process systems can be conceptualized from the perspectives of material resilience (Guha, Environ Prog Sustain Energy, e13308, 2019). Correlations have been used to assess inherent energy resilience properties of constituent process systems pertaining to a gas sweetening unit (GSU) as a case study [1]. A steady state condition has been considered and system stress and system strain equations have been used to quantify the inherent system energy resilience [1]. It is assessed that absorber column and regenerator column systems under study possess inherent energy resilience of around 5% (absorber column) and 15% (regenerator column) with regard to variation in upstream feed sour gas flow rate beyond 100% design flow rate, i.e., 27,814?kg/h. It is also established that the lean-rich exchanger system under study possesses inherent energy resilience of around 10% with regard to variation in upstream feed sour gas flow rate beyond 100% design flow rate. Results also indicate that similar to a material, all the process systems under study (i.e., absorber, regenerator, lean-rich exchanger) of a gas sweetening unit (GSU) demonstrate inverse relationship of modulus of energy resilience (Ur) with modulus of elasticity ( E _(sys)) in all applicable operating variable deviation regimes. Computer simulation using a process simulator SIMULATION SCIENCES INC, Pro/II (Version 9.2) has been utilized for this study. Finally, one example is given regarding design procedure in relation to incorporation of 50% over capacity factor or inherent energy resiliency in the absorber column by augmentation of number of column trays.