Petroleum Processing and Petrochemicals ›› 2019, Vol. 50 ›› Issue (9): 70-74.

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EXERGOECONOMIC ANALYSIS AND OPTIMIZATION OF MULTI-STAGE GAS COMPRESSION PROCESSES

    

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  • Received:2018-12-03 Revised:2019-02-27 Online:2019-09-12 Published:2019-09-25
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Abstract: Exergoeconomic analysis was conducted on an actual cracking gas multi-stage compression process based on simulation data from Aspen Plus. The impacts of number of compressing stages on the total economic performance at different prices of input exergy were studied to reveal the relationship between optimal stage number and price of input exergy. The results obtained showed that the higher the price of input exergy, the more the impact of the stage number on the total cost. The optimal stage number increased as the price of the input exergy increased. Among them,the optimal number of compressor stage was 3 When the price of input exergy was 0.31-0.0.58 Yuan/(kW.h),When price of input exergy was 0.59-0.94 Yuan/(kW.h), the optimal number of stage was 4, and as input exergy exceeded 0.94 Yuan/(kW.h), the optimal number of stages was 5 at least.

Key words: cracking gas, exergoeconomic analysis, optimization of energy utilization, multi-stage compression

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