| 基于流态重构的低能耗循环流化床锅炉技术 |
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| 引用本文： | 杨石,杨海瑞,吕俊复,岳光溪. 基于流态重构的低能耗循环流化床锅炉技术[J]. 电力标准化与计量, 2010, 0(2) |
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| 作者姓名： | 杨石 杨海瑞 吕俊复 岳光溪 |
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| 作者单位： | 清华大学热科学与动力工程教育部重点实验室 |
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| 摘 要： | 通过改进分离器分离效果、提高返料装置输送能力等提高CFB关键部件的性能,来提高床料质量,在保持炉膛上部处于快速床流态前提下,降低床压降,成功实现CFB锅炉的流态迁移,形成了基于流态重构低能耗循环流化床燃烧技术,同时达到减少送风机电耗以降低厂用电率、减小燃烧室水冷壁的磨损、提高燃烧效率的三重效果。该技术可实现厂用电率降低1-2%,锅炉容量相等的条件下燃用相同煤种燃烧效率比现有CFB锅炉技术提高约1%,有效降低风帽及炉膛受热面的磨损问题。依此技术开发了不同容量的基于流态重构低能耗CFB锅炉200余台,目前多台锅炉已经投入运行。其中,75t/h锅炉年均可用率95%,燃烧室水冷壁基本没有磨损,锅炉热效率提高,三台锅炉年节省原煤20000余吨,厂用电率降低2%以上,锅炉及辅机年节省设备检修费用10%以上。本项目的技术成果也为现有各种容量的CFB锅炉的节能改造提供了新的技术方向。本项目的流程在中国申请发明专利并获授权,同时申请了美国、欧洲专利,是具有完全自主知识产权的新一代CFB燃烧技术。
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| 关 键 词： | 循环流化床 流态重构 分离器 |
The Lower Energy Consumption(LEC) CFB Technology Based on State Specification Design Theory |
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| YANG Shi,YANG Hairui,LU|¨Junfu YUE Guangxi. The Lower Energy Consumption(LEC) CFB Technology Based on State Specification Design Theory[J]. Electric Power Standarization & Measurement, 2010, 0(2) |
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| Authors: | YANG Shi YANG Hairui LU|¨Junfu YUE Guangxi |
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| Affiliation: | YANG Shi YANG Hairui L(U|¨)Junfu YUE Guangxi (Key laboratory for Thermal Science and Power Engineering of Ministry of Education; Tsinghua University; Haidian District 100084; Beijing China); |
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| Abstract: | By using the State Specification Design theory,the fluidization state of the gas-solids flow in the furnace was reconstructed by adjusting the bed pressure drop.The Lower Energy Consumption(LEC)CFB Technology is suggested.By using this technology,some fundamental changes were made on process design of CFB boilers:The particle distribution of bed material was limited by improving the performance of key components on CFB boilers;the flow pattern was optimized.When the boiler was operated around the LEC point,... |
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| Keywords: | CFB State specification design theory Separator |
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