关键词: 乙烯装置, 电气化率, 碳排放, 可行性

Abstract: Under the dual-carbon targets,utilizing green electricity and improving electrification rate constitute crucial pathways for reducing carbon emissions in ethylene plants. This study investigates the feasibility of electrification of some steam users in newly constructed large-scale ethylene plants through comprehensive analysis of equipment technology, process operational stability, carbon dioxide emissions, and economy. The results show that:  Current electrical equipment technologies exhibit sufficient maturity for practical implementation; After the electrification rate is improved, the stability of the process operation depends more on the power supply quality; Utilizing green electricity, elevating electrification rate from 14.8% to 34.7% could reduce CO₂ emissions by 510 kt/a;  Economic analysis indicates that the internal rate of return (IRR) of electrification rate enhancement schemes exhibits high sensitivity to fuel gas and electricity prices, while achieving a higher IRR under carbon tax scenarios. Considering ethylene plants' leading role in petrochemical systems, increasing the electrification rate needs to be gradual according to the specific situation in practical projects.It is technically and economically feasible to increase the electrification rate of ethylene plants under the premise of fully guaranteeing the stability of power supply, which is helpful to reduce carbon emissions.

Key words: ethylene plant, electrification rate, carbon emission, feasibility