Integrated Intelligent Energy ›› 2023, Vol. 45 ›› Issue (7): 30-39.doi: 10.3969/j.issn.2097-0706.2023.07.004

• Integrated Energy System • Previous Articles     Next Articles

Analysis of material and energy flows in biomass resource utilization under industrial symbiosis system

WU Tong1,2(), WANG Shouxin3(), CHENG Xingxing1,2,*(), LIU Kunkun1,2   

  1. 1. School of Energy and Power Engineering,Shandong University,Jinan 250061,China
    2. Engineering Laboratory for Reducing Emissions from Coal Combustion,Jinan 250061,China
    3. Huadian Qinhdao Heat-Supply Company Limited,Qingdao 266031,China
  • Received:2023-05-10 Revised:2023-06-05 Accepted:2023-07-07 Online:2023-07-25 Published:2023-07-25
  • Supported by:
    Shandong Provincial Natural Science Foundation(ZR2020ME190);National Key R&D Program of Shandong Province(2020CXGC011402)

Abstract:

Under the growing global shortage of fossil energy,bioenergy represented by biomass power and biofuels has been widely applied. However,its industry scale is hindered by the difficulty in raw material collecting and the economic feasibility. Industrial symbiosis is a sustainable development way to efficiently use various resources. From the perspective of industrial symbiosis,taking biomass cogeneration plants,bioethanol plants,anaerobic digestion(AD) plants,bio-oil refineries and cement plants as collaborative objects,the material and energy flows in biomass resource utilization are studied under four synergistic modes. Energy efficiency and economy analyses are carried out based on the study. The results show that the industrial symbiosis system is beneficial to resource reuse in biomass industry and waste reduction. In a case study, with a biomass straw supply at 13.73 t/h,the plants above could yield 660 L/h bioethanol,1.01 t/h bio-oil,275 m3/h biogas and 67.68 t/h cement.Through the reuse of wastes and by-products,the industrial symbiosis system cogenerated 0.36,2.93,3.47 h or 6.54 MW·h electric power,and 1 365.8,4 548.8,2 883.2 or 29 489.4 MJ heat under four synergistic modes. The energy utilization efficiencies of the system in four synergistic modes differed from that of the plants in independent operation mode by -2.66%,11.96%, 4.15% and 9.40%,respectively. The cost of raw material collection and transportation were saved by around 454 000,3 692 000,4 372 000 and 82 40 000 Yuan per year,respectively. This study provides reference data for the synergistic development of biomass industries.

Key words: biomass energy, industrial symbiosis, synergistic mode, material and energy flow, waste reuse, CHP

CLC Number: