Surplus energy reuse of circulating water power in alumina decomposition tank
Li Yanpin1,2, Ju Yang1, 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
Abstract:To make full use of the large number of surplus energy in the circulating water system of alumina decomposition tank,and to provide technical support for energy recovery of other similar system, the characteristics of circulating water system of alumina decomposition tank have been studied. Based on the size of the system, different solutions of energy recovery have been put forward. The solution of using the surplus energy to generate electricity has been mainly focused. And in view of its peculiarities,the power generation device of the circulating water system in alumina decomposition tank was designed,which is called as the integrated power generation device for using the surplus of circulating water. A circulating water protection process was proposed to solve the problem that the circulating water should not be cut down unexpectedly. An issue named inverse power will be occurred in generator when the turbine discharge is smaller than that under non-load condition. Therefore, protection method for reverse power of generator was put forward, which included the generator excitation subsystem, speed control subsystem, synchronization subsystem and protect subsystem, all the subsystems of control and protect integrated together, forming the four unity comprehensive control panel.Practices have proved that the integrated power generation device for using the surplus energy of circulating water in alumina decomposition tank is safe,reliable and stable.
李延频,, 鞠阳, 袁寿其, 陈德新. 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): 1057-1061.
Li Yanpin,, Ju Yang, Yuan Shouqi, Chen Dexin. Surplus energy reuse of circulating water power in alumina decomposition tank. Journal of Drainage and Irrigation Machinery Engin, 2014, 32(12): 1057-1061.
[1]康丹凤, 王占中, 王克. 钢铁企业余能资源的利用[J]. 冶金能源, 2002,21(5):39-42. Kang Danfeng, Wang Zhanzhong, Wang Ke.Utilization of waste energy in iron & steel enterprises[J]. Energy for Metallurgical Industry, 2002,21(5):39-42.(in Chinese)[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,2011,31(1):175-179. Li Yanpin, Nan Haipeng, Chen Dexin. Performance characteristic and type selection of special hydraulic turbine in cooling tower [J]. Journal of Hydroelectric Engineering, 2011,31(1):175-179.(in Chinese)[3]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:西安理工大学水电学院,2011.[4]Li Yanpin,Nan Haipeng,Duan Kaichuang.Determination of key technical parameters of special hydraulic turbine for cooling tower[C]//The International Conference on Electrical Engineering and Automatic Control(ICEEAC2010). 2010:576-579.[5]金鑫. 工业循环水发电装置及其计算机监控系统的研究[D].郑州:华北水利水电大学电力学院,2012.[6]王桃, 孔繁余, 何玉洋,等. 离心泵作透平的研究现状[J]. 排灌机械工程学报, 2013,31(8):674-680. Wang Tao, Kong Fanyu, He Yuyang, et al. Researching status of centrifugal pump as turbine[J]. Journal of Drainage and Irrigation Machinery Engineering, 2013,31(8):674-680.(in Chinese)[7]尚殿英. 有色冶金工厂的能源回收和利用[J]. 中国能源,1984(1):35-37. Shang Dianying. The energy recovery and utilization of nonferrous metallurgical plants[J]. Energy of China,1984(1):35-37.(in Chinese)[8]阳志洪, 刘莉娜. 氧化铝焙烧系统热能回收利用[J]. 有色金属设计,2011,38(2):30-32. Yang Zhihong, Liu Lina. Heat energy reuse of alumina calciner system[J]. Nonferrous Metals Design, 2011,38(2):30-32.(in Chinese)[9]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 hydrodynamic soptimization of direct drive Francis turbine runner in cooling towers[J]. Journal of Drainage and Irrigation Machinery Engineering, 2014,32(7):600-605.(in Chinese)[10]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)[11]赵勤, 周代莹, 邓志贤. 一种用水压余能驱动风机的新方法[J]. 深冷技术, 1992(6):25. Zhao Qin, Zhou Daying, Deng Zhixian. A new method for residual hydraulic pressure drive fan[J]. The Cryogenic Technology, 1992(6):25.(in Chinese)[12]徐奇焕. 火电厂循环水排水余能发电[J]. 中国电力, 1987(10):75-76. Xu Qihuan. Generate electricity using the residual energy of circulating water drainage in power plant [J]. Electric Power, 1987(10):75-76.(in Chinese)[13]宁丙彦. 循环水余能发电[J]. 汽轮机技术, 1989(1):59-61. Ning Bingyan. Generate electricity using the residual energy of circulating water[J]. Turbine Technology, 1989(1):59-61.(in Chinese)