区域供热/供冷系统中余热回收应用

doi:10.12096/j.2096-4528.pgt.20010

发电技术 ›› 2020, Vol. 41 ›› Issue (6): 578-589.DOI: 10.12096/j.2096-4528.pgt.20010

区域供热/供冷系统中余热回收应用

吴爽¹(), 金旭¹(), 刘忠彦¹(), 车德勇¹(), 隋军²(), 李睿¹(), 赵岳¹, 王召国³

¹ 东北电力大学能源与动力工程学院, 吉林省吉林市 132012
² 中国科学院工程热物理研究所, 北京市海淀区 100190
³ 山东里彦发电有限公司, 山东省济宁市 273517

收稿日期:2020-03-30 出版日期:2020-12-31 发布日期:2021-01-12
作者简介:吴爽(1996), 女, 硕士研究生, 主要从事供热、供冷管网优化研究, wu1253870434@163.com
金旭(1977), 男, 博士, 副教授, 主要从事热泵理论及应用技术研究, jinxu7708@sina.com
刘忠彦(1985), 男, 博士, 副教授, 主要从事热泵技术与应用研究, llzzyy198584@126.com
车德勇(1976), 女, 博士, 教授, 主要从事煤的洁净利用技术研究, chedeyong163@163.com
隋军(1973), 男, 博士, 研究员, 主要研究方向为多能源互补的分布式能源系统, suijun@iet.cn
李睿(1996), 女, 硕士研究生, 主要从事供热、供冷管网优化研究, ruirui961113@163.com
基金资助:
国家重点研发计划项目(2018YFB0905104)

Waste Heat Recovery Applications in District Heating/Cooling Systems

Shuang WU¹(), Xu JIN¹(), Zhongyan LIU¹(), Deyong CHE¹(), Jun SUI²(), Rui LI¹(), Yue ZHAO¹, Zhaoguo WANG³

¹ School of Energy and Power Engineering, Northeast Electric Power University, Jilin 132012, Jilin Province, China
² Institute of Engineering Thermophysics, Chinese Academy of Sciences, Haidian District, Beijing 100190, China
³ Shandong Liyan Power Generation Co., Ltd., Jining 273517, Shandong Province, China

Received:2020-03-30 Published:2020-12-31 Online:2021-01-12
Supported by:
National Key Research and Development Program of China(2018YFB0905104)

摘要/Abstract

摘要：

区域供能系统以一次高品位能源为动力，存在能耗大、环境污染严重等问题。然而，基于“品位对口，梯级利用”原则，采用各种高、中、低温余热回收技术，可显著提升系统能源综合利用效率，降低整体能源消耗，减少环境污染，故备受关注。通过梳理钢铁、冶金以及水泥等能源行业余热回收技术，并重点对低温品位能源余热回收及其应用于区域供热/供冷系统相关技术进展进行了综述，探究了供热/供冷系统中各种余热回收技术的特点。最后，结合工程实例，对供热/供冷领域应用的余热回收技术的可行性和经济性进行了分析，结果显示：余热回收技术可提高区域供热系统能源综合利用效率8%以上，在区域供冷系统中余热回收与蓄冷技术相结合，可节省运行费用20%。

关键词: 低温余热, 余热回收, 区域供热/供冷系统, 节能

Abstract:

The regional energy supply system is powered by high-grade energy, which has problems such as high energy consumption and serious environmental pollution. However, based on the principle of "energy grade matching, and cascade utilization", through utilizing various high, medium and low temperature waste heat recovery technologies, the integrated energy efficiency of the system can be significantly improved, as well as the overall energy consumption and environmental pollution can be reduced, so it is of great concern. Through sorting out the technologies of waste heat recovery in the energy industry of steel, metallurgy and cement, and summarizing the technological progress of low-temperature grade energy waste heat recovery and its application to district heating/cooling systems, the characteristics of various waste heat recovery technologies in the heating/cooling systems were inquired. Finally, the feasibility and economy for application of waste heat recovery technologies in the field of the heating/cooling systems were analyzed with project cases. The results show that by utilizing the waste heat recovery technologies, the integrated energy efficiency of the district heating system can be improved by more than 8%. And the operation cost can be saved by 20% in the district cooling system through combining cold storage technology with waste heat recovery.

Key words: low temperature waste heat, waste heat recovery, district heating/cooling systems, energy saving

中图分类号:

TK115

吴爽, 金旭, 刘忠彦, 车德勇, 隋军, 李睿, 赵岳, 王召国. 区域供热/供冷系统中余热回收应用[J]. 发电技术, 2020, 41(6): 578-589.

Shuang WU, Xu JIN, Zhongyan LIU, Deyong CHE, Jun SUI, Rui LI, Yue ZHAO, Zhaoguo WANG. Waste Heat Recovery Applications in District Heating/Cooling Systems[J]. Power Generation Technology, 2020, 41(6): 578-589.

图/表 10

图1 有机朗肯循环示意图

Fig.1 Schematic diagram of ORC

图2 Kalina循环示意图

Fig.2 Schematic diagram of Kalina loop

图3 钢铁厂自备电厂余热回收及供热流程图

Fig.3 Flow chart of waste heat recovery and heat supply of steel plant

图4 水源热泵烟气余热深度回收系统示意图

Fig.4 Schematic diagram of deep recovery system of waste heat from flue gas of water source heat pump

图5 分布式热泵调峰型燃气热电联产烟气余热回收供热系统

Fig.5 Recovery system of flue gas from combined heat and power plant with distributed peak shaving heat pumps

图6 热泵余热回收系统流程图

Fig.6 Flow chart of heat pump waste heat recovery system

图7 全热回收高温热泵系统原理图

Fig.7 Schematic diagram of high temperature heat pump system with full heat recovery

图8 新型换流阀余热综合利用系统原理图

Fig.8 Schematic diagram of waste heat comprehensive utilization system of new type converter valve

图9 生物质热电联产系统方案流程示意图

Fig.9 Schematic diagram of scheme flow of biomass cogeneration system

图10 区域供冷3#能源站设备平面布置图

Fig.10 Area cooling No. 3 energy station equipment layout

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区域供热/供冷系统中余热回收应用

Waste Heat Recovery Applications in District Heating/Cooling Systems

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