5.Sustainability analysis of polygeneration systemsbased on emergy theory

Abstract:

In order to address the important impacts of biomass energy,cogeneration and carbon capture and storage (CCS)technologies for the sustainable development of the chemical industry,a model of biomasscoal cogasificationFischerTropsch liquidelectricitypolygeneration system was constructed. The efficiency of the system with / without CCS in terms of material conversion and energy utilization was calculated and analyzed. Secondly,the environmental friendliness and sustainability of the system were comprehensively evaluated using emergy analysis method. The results show that the best sustainability is achieved with a biomass ratio of 80% for thepolygenration system with CCS and 60% for the PGP system without CCS.

Keywords: sustainable development;emergy analysis;polygeneration;biomass energy;exergy analysis