Waste Heat Recovery Applications in District Heating/Cooling Systems

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

Abstract

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

CLC Number:

TK115

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.

Figures/Tables 10

Fig.1 Schematic diagram of ORC

Fig.2 Schematic diagram of Kalina loop

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

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

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

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

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

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

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

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

References 48

1	连红奎, 李艳, 束光阳子, 等. 我国工业余热回收利用技术综述[J]. 节能技术, 2011, 29 (2): 123- 128. DOI
	LIAN H K , LI Y , SHUGUANG Y Z , et al. A review of industrial waste heat recovery and utilization technology in China[J]. Energy Saving Technology, 2011, 29 (2): 123- 128. DOI
2	JOUHARA H , KHORDEHGAH N , ALMAHMOUD S , et al. Waste heat recovery technologies and applications[J]. Thermal Science and Engineering Progress, 2018, 6, 268- 289. DOI
3	李允超, 赵大周, 刘博, 等. 火电厂烟气余热利用现状与展望[J]. 发电技术, 2019, 40 (3): 270- 275.
	LI Y C , ZHAO D Z , LIU B , et al. Current situation and prospect of flue gas waste heat utilization in thermal power plants[J]. Power Generation Technology, 2019, 40 (3): 270- 275.
4	朱继明, 兰文龙, 刘健平. 工业低品位余热应用于城市集中供热的技术途径与潜力研究[J]. 中国能源, 2014, 36 (9): 13- 16. DOI
	ZHU J M , LAN W L , LIU J P . Research on technical approach and potential of industrial low-grade waste heat applied to urban central heating[J]. China Energy, 2014, 36 (9): 13- 16. DOI
5	薛晓东, 韩巍, 王晓东, 等. 适合分布式冷热电联供系统的中小型发电装置[J]. 发电技术, 2020, 41 (3): 252- 260.
	XUE X D , HAN W , WANG X D , et al. Small and medium-scale power generation devices suiting for distributed combined cooling, heating and power system[J]. Power Generation Technology, 2020, 41 (3): 252- 260.
6	张俊博, 金旭, 刘忠彦, 等. 吸收式热泵余热回收先进技术综述[J]. 发电技术, 2020, 41 (3): 269- 280.
	ZHANG J B , JIN X , LIU Z Y , et al. Review on advanced technology for waste heat recovery of absorption heat pump[J]. Power Generation Technology, 2020, 41 (3): 269- 280.
7	赵宗燠. 余热利用与锅炉节能[M]. 银川: 宁夏人民出版社, 1984.
	ZHAO Z Y . Waste heat utilization and boiler energy saving[M]. Yinchuan: Ningxia People's Press, 1984.
8	王波, 王夕晨, 袁益超, 等. 高炉炉渣余热回收技术的研究进展[J]. 热能动力工程, 2014, 29 (2): 113- 120.
	WANG B , WANG X C , YUAN Y C , et al. Research progress of waste heat recovery technology of blast furnace slag[J]. Thermal and Power Engineering, 2014, 29 (2): 113- 120.
9	BADESCU V . Model of a solar-assisted heat-pump system for space heating integrating a thermal energy storage unit[J]. Energy and Buildings, 2002, 34 (7): 715- 726. DOI
10	SARKAR J , BHATTACHARYYA S . Operating characteristics of transcritical CO₂ heat pump for simultaneous water cooling and heating[J]. Archives of Thermodynamics, 2012, 33 (4): 23- 40.
11	DIRECTIVE E U.77/EC on the promotion of the electricity produced from renewable energy source in the internal electricity market[Z].Brussels: European Union, 2001.
12	周耘, 王康, 陈思明. 工业余热利用现状及技术展望[J]. 科技情报开发与经济, 2010, 20 (23): 162- 164. DOI
	ZHOU Y , WANG K , CHEN S M . Current situation and prospect of industrial waste heat utilization[J]. Science and Technology Intelligence Development and Economy, 2010, 20 (23): 162- 164. DOI
13	丁毅, 史德明. 钢铁企业余热资源高效利用[J]. 钢铁, 2011, 46 (10): 88- 93.
	DING Y , SHI D M . Efficient utilization of waste heat resources in iron and steel enterprises[J]. Steel and Iron, 2011, 46 (10): 88- 93.
14	胡长庆, 张春霞, 张旭孝, 等. 钢铁联合企业炼焦过程物质与能量流分析[J]. 钢铁研究学报, 2007, (6): 16- 20. DOI
	HU C Q , ZHANG C X , ZHANG X X , et al. Analysis of material and Energy flow in coking process of iron and steel joint enterprises[J]. Journal of Steel Research, 2007, (6): 16- 20. DOI
15	胡长庆, 师学峰, 张玉柱, 等. 烧结余热回收发电关键技术[J]. 钢铁, 2011, 46 (1): 86- 91. DOI
	HU C Q , SHI X F , ZHANG Y Z , et al. Key technology of sintering waste heat recovery for power generation[J]. Steel and Iron, 2011, 46 (1): 86- 91. DOI
16	李冬庆. 烧结冷却机余热发电系统及其关键技术[J]. 烧结球团, 2010, 35 (6): 5- 12.
	LI D Q . Waste heat power generation system of sintering cooler and its key technology[J]. Sintered Pellets, 2010, 35 (6): 5- 12.
17	程云, 李菊香. 高炉冲渣水余热回收的可行性研究[J]. 低温与超导, 2010, 38 (3): 78- 80.
	CHENG Y , LI J X . Feasibility study on waste heat recovery of blast furnace slag water[J]. Low Temperature and Superconductivity, 2010, 38 (3): 78- 80.
18	李洪福.炼钢转炉烟气余热回收利用研究[D].济南: 山东大学, 2006.
	LI H F.Study on recovery and utilization of waste heat from steelmaking converter[D].Jinan: Shandong University, 2006.
19	李杨.炼钢烟气余热资源的回收及利用[D].沈阳: 东北大学, 2009.
	LI Y. Recovery and utilization of waste heat resources of steelmaking flue gas[D].Shenyang: Northeastern University, 2009.
20	马永锋, 刘颖, 詹应舟, 等. 钢铁公司烧结余热回收发电工程[J]. 冶金动力, 2016, (8): 8- 10.
	MA Y F , LIU Y , ZHAN Y Z , et al. Sinter waste heat recovery power generation project of iron and steel company[J]. Metallurgical Power, 2016, (8): 8- 10.
21	刘军祥, 于庆波, 谢华清, 等. 冶金渣颗粒余热回收的实验研究[J]. 东北大学学报(自然科学版), 2014, 35 (2): 245- 248. DOI
	LIU J X , YU Q B , XIE H Q , et al. Experimental study on waste heat recovery of metallurgical slag particles[J]. Journal of Northeastern University (Natural Science Edition), 2014, 35 (2): 245- 248. DOI
22	宋炜. 水泥窑筒体余热回收技术在脱硝系统中的应用[J]. 应用能源技术, 2016, (6): 18- 20.
	SONG H . Application of cement kiln shell waste heat recovery technology in denitrification system[J]. Applied Energy Technology, 2016, (6): 18- 20.
23	周鹿鸣, 张宏宇, 宝海龙, 等. 规模化热泵对配电网运行特性和电能质量影响分析[J]. 电网与清洁能源, 2018, 34 (5): 74- 82.
	ZHOU L M , ZHANG H Y , BAO H L , et al. Analysis of the influence of large-scale heat pump on the operation characteristics and power quality of distribution network[J]. Power Grid and Clean Energy, 2008, 34 (5): 74- 82.
24	王江峰, 戴义平, 陈江. 中低温余热发电技术及其在水泥生产中的应用[J]. 节能, 2007, 26 (2): 32- 34.
	WANG J F , DAI Y P , CHEN J . Medium and low temperature waste heat power generation technology and its application in cement production[J]. Energy Conservation, 2007, 26 (2): 32- 34.
25	庄骏, 徐通明, 石寿椿. 热管与热管换热器[M]. 上海: 上海交通大学出版社, 1989.
	ZHUANG J , XU T M , SHI S C . Heat pipe and heat pipe heat exchanger[M]. Shanghai: Shanghai Jiao Tong University Press, 1989.
26	VASILIEV L L . Heat pipes in modern heat exchangers[J]. Applied Thermal Engineering, 2005, 25 (1): 1- 19.
27	李萌.基于余热回收用的热泵技术对比研究[D].天津: 天津大学, 2014.
	LI M.Comparative study on heat pump technology based on waste heat recovery[D].Tianjin: Tianjin University, 2014.
28	姜迎春, 韩巍. 利用低温烟气余热的吸收-压缩复合热泵系统[J]. 工程热物理学报, 2017, 38 (6): 1150- 1156.
	JIANG Y C , HAN W . An absorption-compression composite heat pump system utilizing low temperature flue gas waste heat[J]. Journal of Engineering Thermophysics, 2017, 38 (6): 1150- 1156.
29	高军.工业低温循环水余热回收技术的开发与应用[C]//2019年炼钢生产新工艺、新技术、新产品研讨会论文集.石家庄: 河北省金属学会, 2019: 463-467.
	GAO J.Development and application of waste heat recovery technology of industrial low-temperature circulating water[C]//Symposium proceedings on new process, new technology and new product of steelmaking production in 2019.Shijiazhuang: Metal Society of Hebei Province, 2019: 463-467.
30	刘庆伟.低温余热型氨水吸收式制冷HGAX循环性能研究[D].大连: 大连理工大学, 2012.
	LIU Q W.Study on HGAX cycling performance of low temperature waste heat ammonia absorption refrigeration[D].Daliang: Dalian University of Technology, 2012.
31	周涛, 侯祥松, 谢建, 等. 转炉烟气中低温余热回收工艺研究[J]. 钢铁技术, 2019, (3): 36- 39.
	ZHOU T , HOU X S , XIE J , et al. Study on low temperature waste heat recovery process in converter flue gas[J]. Steel Technology, 2019, (3): 36- 39.
32	霍兆义, 李洪宇, 徐伟. 大型多级离心空压机低温余热回收[J]. 辽宁科技大学学报, 2018, 41 (6): 412- 418.
	HUO Z Y , LI H Y , XU W . Low temperature waste heat recovery of large multistage centrifugal air compressor[J]. Journal of Liaoning University of Science and Technology, 2012, 41 (6): 412- 418.
33	臧传宝. 高炉冲渣水余热采暖的应用[J]. 山东冶金, 2003, (1): 22- 23.
	ZANG C B . Application of waste heat heating of blast furnace slag water[J]. Shandong Metallurgy, 2003, (1): 22- 23.
34	边海军, 张晓灵, 杨宝锐, 等. 钢铁工业余热回收用于城市集中供热的实践[J]. 区域供热, 2018, (1): 58- 63.
	BIAN H J , ZHANG X L , YANG B R , et al. The practice of waste heat recovery in iron and steel industry for urban central heating[J]. District Heating, 2018, (1): 58- 63.
35	吴佳蕾, 王随林, 石书强, 等. 大型燃气锅炉烟气冷凝余热深度回收技术方案与节能潜力分析[J]. 暖通空调, 2016, 46 (3): 66- 69.
	WU J L , WANG S L , SHI S Q , et al. Technical scheme and energy saving potential analysis of waste heat recovery from flue gas condensation in large gas boilers[J]. Heating Ventilating & Air Conditioning, 2016, 46 (3): 66- 69.
36	祝侃, 夏建军, 谢晓云, 等. 吸收式热泵及直接接触换热在燃气锅炉全热回收中的应用[J]. 暖通空调, 2013, 43 (9): 111- 115.
	ZHU K , XIA J J , XIE X Y , et al. Application of absorption heat pump and direct contact heat transfer in total heat recovery of gas-fired boiler[J]. Heating Ventilating & Air Conditioning, 2013, 43 (9): 111- 115.
37	张迪, 丁琦, 魏巍, 等. 水源热泵在燃气供热锅炉烟气余热回收中的应用[J]. 暖通空调, 2018, 48 (4): 57- 60.
	ZHANG D , DING Q , WEI W , et al. Application of water source heat pump in flue gas waste heat recovery of gas-fired heating boiler[J]. Heating Ventilating & Air Conditioning, 2008, 48 (4): 57- 60.
38	赵玺灵, 付林, 王笑吟, 等. 分布式热泵调峰型热电联产烟气余热回收系统评价[J]. 哈尔滨工业大学学报, 2018, 50 (2): 152- 159.
	ZHAO X L , FU L , WANG X Y , et al. Evaluation of flue gas waste heat recovery system of distributed heat pump peak-regulating cogeneration[J]. Journal of Harbin Institute of Technology, 2008, 50 (2): 152- 159.
39	王富全, 庞卓, 田刚, 等. 吸收式热泵回收燃气锅炉烟气余热技术[J]. 煤气与热力, 2018, 38 (12): 1- 4.
	WANG F Q , PANG Z , TIAN G , et al. Absorption heat pump technology for recovery of waste heat from gas boiler flue gas[J]. Gas and Heat, 2008, 38 (12): 1- 4.
40	PEARSON A . Thermal coupling of cooling and heating systems[J]. ASHRAE Journal, 2011, 53 (2): 18.
41	郑大宇, 刘卫党, 韩祥民, 等. 对现有大型冷库冷凝热回收的研究[J]. 低温建筑技术, 2011, 33 (1): 113- 115.
	ZHENG D Y , LIU W D , HAN X M , et al. Research on condensation heat recovery of existing large-scale cold storage[J]. Cryogenic Building Technology, 2011, 33 (1): 113- 115.
42	舒建国, 毛国良. 全热回收热泵技术在禽类屠宰行业的应用[J]. 制冷技术, 2018, 38 (1): 67- 71.
	SHU J G , MAO G L . Application of total heat recovery heat pump technology in poultry slaughtering industry[J]. Refrigeration Technology, 2008, 38 (1): 67- 71.
43	魏洪生, 朱世龙, 孙铁军. 小型屠宰工厂冷凝热回收及高温热泵热水系统的应用[J]. 肉类工业, 2014, (7): 40- 42.
	WEI H S , ZHU S L , SUN T J . Condensation heat recovery and application of high temperature heat pump hot water system in small slaughter plant[J]. Meat Industry, 2014, (7): 40- 42.
44	杨洋.乳品厂的余热回收应用及板式换热器传热的研究[D].哈尔滨: 哈尔滨商业大学, 2016.
	YANG Y.Application of waste heat recovery in dairy plants and research on heat transfer of plate heat exchanger[D].Harbin: Harbin University of Commerce, 2016.
45	梅玉龙, 杨福华. 一种新型空调循环冷却水余热利用系统[J]. 给水排水, 2018, 44 (11): 73- 76.
	MEI Y L , YANG F H . A new type of air conditioning circulating cooling water waste heat utilization system[J]. Water Supply and Drainage, 2008, 44 (11): 73- 76.
46	周建辉, 张兴娟, 侯俊义, 等. 基于余热回收利用的新型换流阀冷却系统[J]. 南方电网技术, 2019, 13 (6): 16- 23.
	ZHOU J H , ZHANG X J , HOU J Y , et al. A new type of converter valve cooling system based on waste heat recovery[J]. China Southern Power Grid Technology, 2019, 13 (6): 16- 23.
47	付林, 张世钢, 赵玺灵, 等. 热泵型天然气热电冷联供系统实践研究[J]. 暖通空调, 2009, 39 (2): 138- 141.
	FU L , ZHANG S G , ZHAO X L , et al. Practical research on heat pump type natural gas thermoelectric cogeneration system[J]. Heating Ventilating & Air Conditioning, 2009, 39 (2): 138- 141.
48	侯震林. 区域燃气冷热电联供的发展及其特点分析[J]. 机电信息, 2011, (24): 212- 213.
	HOU Z L . Development and characteristic analysis of regional gas cooling, heating and power supply[J]. Electromechanical Information, 2011, (24): 212- 213.

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