State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, China.
Université de Toulouse, Mines Albi, UMR CNRS 5302, Centre RAPSODEE, Campus Jarlard, Albi Cedex 09, France.
Environ Sci Pollut Res Int. 2017 Aug;24(22):18434-18443. doi: 10.1007/s11356-017-9396-4. Epub 2017 Jun 22.
With the aim of upgrading current food waste (FW) management strategy, a novel FW hydrothermal pretreatment and air-drying incineration system is proposed and optimized from an energy and exergy perspective. Parameters considered include the extracted steam quality, the final moisture content of dehydrated FW, and the reactor thermal efficiency. Results show that optimal working condition can be obtained when the temperature and pressure of extracted steam are 159 °C and 0.17 MPa, the final moisture content of dehydrated FW is 10%, and the reactor thermal efficiency is 90%. Under such circumstance, the optimal steam energy and exergy increments reach 194.92 and 324.50 kJ/kg-FW, respectively. The novel system is then applied under the local conditions of Hangzhou, China. Results show that approximately 2.7 or 11.6% (from energy or exergy analysis perspective) of electricity can be additionally generated from 1 ton of MSW if the proposed novel FW system is implemented. Besides, comparisons between energy and exergy analysis are also discussed.
为了升级现有的食物垃圾（FW）管理策略，从能量和（火用）的角度出发，提出并优化了一种新颖的 FW 热水预处理和风干焚烧系统。所考虑的参数包括提取蒸汽的质量、脱水 FW 的最终水分含量和反应器热效率。结果表明，当提取蒸汽的温度和压力分别为 159°C 和 0.17 MPa、脱水 FW 的最终水分含量为 10%且反应器热效率为 90%时，可以获得最佳工作条件。在此情况下，最佳蒸汽能量和（火用）增量分别达到 194.92 和 324.50 kJ/kg-FW。然后将该新型系统应用于中国杭州的当地情况。结果表明，如果实施所提出的新型 FW 系统，从 1 吨城市固体废物中可以额外产生约 2.7 或 11.6%（从能量或（火用）分析的角度）的电力。此外，还讨论了能量和（火用）分析之间的比较。
