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| Surplus energy recovery of industrial circulating cooling water and its key technologies |
| Li Yanpin1,2, Yuan Shouqi2, Chen Dexin1 |
| 1.School of Electric Power, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450011, China; 2.National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China |
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Abstract Based on the research of structural mode of the industrial circulating cooling water system, three typical circulating water systems have been summed up, including the heating and cooling water series system, the heating and cooling water independent system and the circulating water open system. Through the analysis of the residual energy in the circulating cooling water system, it is found that whatever the structural mode is, the surplus energy is about 5-30 m generally, and in some systems it can be up to 50 m or so. All these belong to the low surplus energy system. Based on the surplus energy characteristic of circulating cooling water systems, three typical surplus energy recovery ways have been proposed, including turbine-fan unit, small or micro hydropower generating device and the turbine pump unit. For the three surplus energy recovery ways, the respective key technology or problems have been pointed out. The key of turbine-fan unit is the design of the ultra-low specific speed turbine, but its high cost, low efficiency, single model, lack of research on flow field; the key of surplus energy power generation is the selection of the turbine and its circulating water protection and reverse power protection; the key of the turbine pump unit is the design of the turbine or the reverse pump as turbine(PAT). And the differences between the PAT and the turbine, including the working process, the design theories and methods and the flow passage have been also pointed out. These differences lead to the low-energy density and low efficiency of the PAT. Therefore, the economic and technological comparison between the PAT and the turbine should be made to determine which should be selected in turbine pump unit.
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Received: 03 November 2014
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| [1]李延频.冷却塔专用超低比转速混流式水轮机的特性研究[D].西安:西安理工大学水利水电学院,2011.[2]李延频,南海鹏,陈德新.冷却塔专用水轮机的工作特性与选型[J].水力发电学报,2011,30(1):175-179. Li Yanpin, Nan Haipeng, Chen Dexin. Performance and type selection of special hydraulic turbine in cooling tower [J]. Journal of Hydroelectric Engineering, 2011,30(1):175-179.(in Chinese)[3]Li Yanpin,Nan Haipeng,Duan Kaichuang.Determination of key technical parameters of special hydraulic turbine for cooling tower [J]. Advanced Materials Research,2012,383-390:1386-1390.[4]李延频, 鞠阳, 袁寿其,等. 氧化铝分解槽循环水余能利用[J]. 排灌机械工程学报, 2014,32(12): 1507-1061. Li Yanpin,Ju Yang,Yuan Shouqi,et al. Surplus energy reuse of circulating water power in alumina decomposition tank [J]. Journal of Drainage and Irrigation Machinery Engineering, 2014, 32(12):1507-1061.(in Chinese)[5]李延频,南海鹏,陈德新.冷却塔专用水轮机组的调节特性研究[J].水力发电学报,2011,30(3):187-190. Li Yanpin, Nan Haipeng, Chen Dexin. Study on regulation characteristics of special turbine-fan unit in cooling tower [J]. Journal of Hydroelectric Engineering, 2011,30(3):187-190.(in Chinese)[6]陈洋, 周大庆, 李玲玉,等. 水动冷却塔直驱混流式水轮机转轮数值模拟优化[J]. 排灌机械工程学报, 2014, 32(7):600-605. Chen Yang, Zhou Daqing, Li Lingyu,et al. Numerical simulation and hydrodynamics optimization of direct-drive Francis turbine runner in cooling towers[J]. Journal of Drainage and Irrigation Machinery Engineering, 2014, 32(7):600-605.(in Chinese)[7]杨学军, 赖喜德. 一种循环水冷却塔系统余压余能利用的方法[J]. 华电技术, 2009, 31(12):69,76,80. Yang Xuejun, Lai Xide. A utilization method of residual pressure and residual energy in circulating water cooling tower [J].Huadian Technology, 2009,31(12):69,76,80.(in Chinese)[8]袁野.高效消防水轮泵的设计及其稳定性分析[D].江苏大学流体机械工程技术研究中心, 2013.[9]陈浩.液力透平泵的设计与研究[D].江苏大学流体机械工程技术研究中心, 2013.[10]骆辛磊,徐建求.拓宽水轮泵概念 发挥节能优势——关于水轮泵如何走出困境的思考[J].中国水利,2008(4):65-66. Luo Xinlei, Xu Jianqiu. Broaden the concept of the hydraulic pump to play an energy-saving advantage:Think about how the turbine pump out [J].China Water Resources,2008(4):65-66.(in Chinese)[11]Kitteredge C P,Thomas D.Centrifugal pumps operated under abnormal conditions[J].Power,1931,32(4):881-884.[12]Nautiyal H,Kumar V A. Reverse running pumps analyti-cal,experimental and computational study: A review[J].Renewable and Sustainable Energy Reviews,2010,14(7): 2059-2067.[13]盛树仁,房壮为.在石油化学工业中利用水轮机回收能量[J].大电机技术,1982(4):41-44. Sheng Shuren, Fang Zhuangwei. Using hydraulic turbine for energy recovery in the petrochemical industry [J].Large Electric Machine and Hydraulic Turbine,1982(4):41-44.(in Chinese)[14]钱伯章. 液力透平及其应用[J]. 炼油设备设计, 1983,3(1):25-30. Qian Bozhang.The hydraulic turbine and its application [J]. Petroleum Refinery Engineering, 1983,3(1):25-30.(in Chinese)[15]房壮为. 哈尔滨电机厂生产的能量回收液力透平在上海通过性能鉴定[J]. 大电机技术, 1984,13(4):68. Fang Zhuangwei. The performance appraisal of hydraulic turbine of Harbin electric for energy recovery has been done in Shanghai [J]. Large Electric Machine and Hydraulic Turbine,1984,13(4):68.(in Chinese)[16]大庆石油化工总厂炼油厂. 离心泵作液力透平回收能量的试验及其运行[J]. 中氮肥, 1985(5):9-14. Daqing Petrochemical General Refinery. Test and operation of centrifugal pump as turbine for energy recovery[J]. M-sized Nitrogenous Fertilizer Progress, 1985(5):9-14.(in Chinese)[17]刘小兵,程良骏. 离心水泵用作水轮机时的特性分析及问题讨论[J]. 排灌机械, 1993(3):7-9,59. Liu Xiaobing,Cheng Liangjun. Radial thrust behavior and discussion in centrifugal pump as turbine [J].Drainage and Irrigation Machinery,1993(3):7-9,59.(in Chinese)[18]关醒凡, 张大恩, 李焰东,等. 能量回收液力透平开发设计[J]. 通用机械, 2012,11(11): 55-56. Guan Xingfan, Zhang Daen, Li Yandong,et al. The design of pump as turbine for energy recovery [J].General Machinery, 2012,11(11):55-56.(in Chinese)[19]陈大秋. 液力透平代替电动机节能[J]. 现代节能, 1989,5(2):24-25. Chen Daqiu. The energy conservation of hydraulic turbine instead of electric motor[J]. Modern Energy-sa-ving, 1989,5(2):24-25.(in Chinese)[20]孙嘉岐,冯晨阳.液力透平在流程工业领域的应用[J].热带农业工程,2012,36(1):33-37. Sun Jiaqi, Feng Chenyang. Hydraulic turbine applications in process industries[J].Tropical Agricultural Engineering,2012,36(1):33-37.(in Chinese)[21]刁望升.高压加氢装置应用液力透平可行性研究[J].炼油技术与工程,2008,38(7):33-35. Diao Wangsheng. Study on application feasibility of hydraulic turbine in high-pressure hydrotreating unit[J].Petroleum Refinery Engineering,2008,38(7):33-35.(in Chinese)[22]王梓荣,秦馗,石庆永,等.半贫液泵和水力透平机组的配置及应用[J].中国高新技术企业,2010,16(9):91-92. Wang Zirong,Qin Kui, Shi Qingyong,et al.The configuration and application of half deficient liquid centrifugal pump and the hydraulic turbine unit [J].China High-Tech Enterprises,2010,16(9):91-92.(in Chinese)[23]Raja W A,Piazza R W.Reverse running centrifugal pumps as hydraulic power recovery turbines for sea water reverse osmosis systems[J].Desalination,1981,38:123-134.[24]Van Antwerpen H J,Greyvenstein G P.Use of turbines for simultaneous pressure regulation and recovery in se-condary cooling water systems in deep mines [J].Energy Conversion and Management,2005,46(4):563-575.[25]谢亚.浅析水力透平(1107-JHT)改进的经济性[J].贵州化工,2010,35(4):56-59. Xie Ya. About improvement of the economical efficiency of the hydraulic turbine(1107 — JHT)[J].Guizhou Chemical Industry,2010,35(4):56-59.(in Chinese)[26]虞兵.XBC型消防水轮泵的研制[J].通用机械,2003,2(3):24-26. Yu Bing. Development of XBC type fire control turbine pump[J].General Machinery,2003,2(3):24-26.(in Chinese)[27]王丽晶.低水位消防供水技术的研究[J].消防科学与技术,2007,26(6):658-660. Wang Lijing. Research on low-level water supply techniques[J]. Fire Science and Technology,2007,26(6):658-660.(in Chinese) |
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