| 污泥和煤混烧发电系统的(火用)分析和优化 |
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| 引用本文： | 张翠玲,麻红磊,池涌,马增益. 污泥和煤混烧发电系统的(火用)分析和优化[J]. 动力工程, 2009, 29(10) |
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| 作者姓名： | 张翠玲 麻红磊 池涌 马增益 |
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| 作者单位： | 浙江大学热能工程研究所,能源清洁利用国家重点实验室,杭州310027 |
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| 摘 要： | 对典型污泥和煤混合燃烧发电系统进行了分析和优化,即用汽轮机回热系统的部分蒸汽对污泥进行干化预处理,并基于(火用)分析原理建立了数学计算模型.实例计算结果表明:当回热抽汽口蒸汽参数较高时,干燥器的热干燥效率ηdry在取值范围内存在最小值,使系统有优化效果;当回热抽汽口蒸汽参数较低时,ηdry在取值范围内取任意值都可使系统优化,且系统(火用)效率随着污泥含水率α的降低而升高,当α降低到40%左右时(火用)效率的变化减缓.经比较,该文的数学模型与热量法计算结果相比误差很小,且计算简单、便于分析,可用于实际工程.在实例中,系统经过优化后发电量提高了17.4%,优化效果十分明显.
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| 关 键 词： | 混合燃烧发电系统 系统优化 (火用)分析 污泥 煤 |
Exergy Analysis and Optimization of Sewage Sludge and Coal Co-combustion Power Generation System |
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| ZHANG Cui-ling , MA Hong-lei , CHI Yong , MA Zeng-yi. Exergy Analysis and Optimization of Sewage Sludge and Coal Co-combustion Power Generation System[J]. Power Engineering, 2009, 29(10) |
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| Authors: | ZHANG Cui-ling MA Hong-lei CHI Yong MA Zeng-yi |
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| Affiliation: | ZHANG Cui-ling,MA Hong-lei,CHI Yong,MA Zeng-yi(State Key Lab of Clean Energy Utilization,Institute of Thermal Engineering,Zhejiang University,Hangzhou 310027,China) |
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| Abstract: | Exergy analysis was made for the typical sewage sludge and coal co-combustion power generation system.And the system was optimized by using part of the steam from the regenerative system of the steam turbine for sludge drying pretreatment.Based on exergy analysis,a mathematics calculating model was established.The calculating results show that when the values of the steam parameters at the steam extraction port of the regenerative system are high,a minimum value is existed for the drying efficiency of the h... |
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| Keywords: | co-combustion power generation system system optimization exergy analysis sewage sludge coal |
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