Municipal Solid Waste Fueled Power Generation in China: A Case Study of Waste-to-Energy in Changchun City
详细信息 查看全文
- 作者：Hefa Cheng ; Yanguo Zhang ; Aihong Meng ; Qinghai Li
- 刊名：Environmental Science & Technology
- 出版年：2007
- 出版时间：November 1, 2007
- 年：2007
- 卷：41
- 期：21
- 页码：7509 - 7515
- 全文大小：223K
- 年卷期：v.41,no.21(November 1, 2007)
- ISSN：1520-5851
文摘
With rapid economic growth and massive urbanization inChina, many cities face the problem of municipal solid waste(MSW) disposal. With the lack of space for new landfills,waste-to-energy incineration is playing an increasinglyimportant role in waste management. Incineration of MSWfrom Chinese cities presents some unique challengesbecause of its low calorific value (3000-6700 kJ/kg) andhigh water content (~50%). This study reports a novel waste-to-energy incineration technology based on co-firing ofMSW with coal in a grate-circulating fluidized bed (CFB)incinerator, which was implemented in the Changchun MSWpower plant. In 2006, two 260 ton/day incineratorsincinerated 137 325 tons, or approximately one/sixth of theMSW generated in Changchun, saving more than 0.2million m3 landfill space. A total of 46.2 million kWh electricitywas generated (38 473 tons lignite was also burned assupplementary fuel), with an overall fuel-to-electricityefficiency of 14.6%. Emission of air pollutants includingparticulate matters, acidic gases, heavy metals, and dioxinswas low and met the emission standards for incinerators.As compared to imported incineration systems, thisnew technology has much lower capital and operatingcosts and is expected to play a role in meeting China'sdemands for MSW disposal and alternative energy.