Municipal solid waste fueled power generation in china: a case study of waste-to-energy in changchun city
Municipal solid waste fueled power generation in china: a case study of waste-to-energy in changchun city
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DOI：
10.1021/es071416g
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发表时间：
2007-11-01
影响因子：
11.4
通讯作者：
Li, Qinghai
中科院分区：
文献类型：
--
作者：
Cheng, Hefa;Zhang, Yanguo;Li, Qinghai
随着中国经济的快速增长和大规模城市化进程，许多城市都面临着城市固体废物（MSW）处理的问题。由于缺乏新垃圾填埋场的空间，垃圾焚烧发电在垃圾管理中发挥着越来越重要的作用。由于其低热值（3000-6700 kJ/kg）和高含水量（接近 50%），中国城市生活垃圾的焚烧面临着一些独特的挑战。本研究报告了一种新型垃圾焚烧发电技术，该技术基于在炉排循环流化床（CFB）焚烧炉中将城市固体废物与煤共烧，并在长春城市固体废物发电厂实施。 2006年，两台260吨/天的焚烧炉焚烧了137 325吨垃圾，约占长春市产生的城市固体垃圾的六分之一，节省了超过20万平方米的垃圾填埋空间。累计发电4620万千瓦时（补充燃料褐煤38473吨），综合燃料发电效率14.6%。颗粒物、酸性气体、重金属、二恶英等大气污染物排放量较低，达到焚烧炉排放标准。与进口焚烧系统相比，这项新技术的资金和运营成本要低得多，有望在满足中国垃圾处理和替代能源需求方面发挥作用。
With rapid economic growth and massive urbanization in China, 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 increasingly important role in waste management. Incineration of MSW from Chinese cities presents some unique challenges because of its low calorific value (3000-6700 kJ/kg) and high water content (similar to 50%). This study reports a novel waste-to-energy incineration technology based on co-firing of MSW with coal in a grate-circulating fluidized bed (CFB) incinerator, which was implemented in the Changchun MSW power plant. In 2006, two 260 ton/day incinerators incinerated 137 325 tons, or approximately one/sixth of the MSW generated in Changchun, saving more than 0.2 million m(3) landfill space. A total of 46.2 million kWh electricity was generated (38 473 tons lignite was also burned as supplementary fuel), with an overall fuel-to-electricity efficiency of 14.6%. Emission of air pollutants including particulate matters, acidic gases, heavy metals, and dioxins was low and met the emission standards for incinerators. As compared to imported incineration systems, this new technology has much lower capital and operating costs and is expected to play a role in meeting China's demands for MSW disposal and alternative energy.