从环境和能量的角度评估先进的循环流化床城市固体废物焚烧系统的生命周期。
Life Cycle Assessment of Advanced Circulating Fluidized Bed Municipal Solid Waste Incineration System from an Environmental and Exergetic Perspective.
机构信息
State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China.
Zhejiang Development & Planning Institute, Hangzhou 310012, China.
出版信息
Int J Environ Res Public Health. 2021 Oct 3;18(19):10432. doi: 10.3390/ijerph181910432.
The production of clean and efficient energy from municipal solid waste (MSW) is extremely urgent matter due to an increasing energy demand and environmental concerns. In this study, a high steam parameter (520 °C, 7.9 MPa) circulating fluidized bed (CFB) MSW incineration system, equipped with a mechanical, biological treatment and external heat exchanger systems, was introduced and a comparative study with a typical mechanical grate (450 °C, 5.3 MPa) incineration system and conventional CFB (485 °C, 5.3 MPa) incineration system was carried out from a life-cycle, environmental and exergetic perspective which could assess different energy and material outputs based on real operating data. Moreover, the potential system optimization of this advanced CFB system was proposed. The results showed that the advanced CFB system was more environmentally friendly and resource-efficient than conventional MSW incineration systems. The recovery of material should be given priority over energy recovery. According to the assessment of the environment, and energy and material recovery, a process improvement with an incinerated refuse-derived fuel and a semi-compost produced by MBT as a soil conditioner was highly recommended.
由于能源需求不断增加和环境问题的关注，从城市固体废物（MSW）中生产清洁高效能源是一项极其紧迫的任务。在这项研究中，介绍了一种具有高热蒸汽参数（520°C，7.9 MPa）的循环流化床（CFB）MSW 焚烧系统，并配备了机械、生物处理和外部换热器系统，从生命周期、环境和热力学角度对其进行了与典型机械炉排（450°C，5.3 MPa）焚烧系统和传统 CFB（485°C，5.3 MPa）焚烧系统的比较研究，可根据实际运行数据评估不同的能源和物质产出。此外，还提出了该先进 CFB 系统的潜在系统优化方案。结果表明，先进的 CFB 系统比传统的 MSW 焚烧系统更环保和资源高效。材料的回收应优先于能源回收。根据环境、能源和物质回收的评估，强烈推荐采用焚烧垃圾衍生燃料和通过 MBT 产生的半堆肥作为土壤改良剂的工艺改进。
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