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J4  2011, Vol. 45 Issue (11): 2008-2013    DOI: 10.3785/j.issn.1008-973X.2011.11.020
能源工程     
炼铁伴生能源联合循环系统热力学性能分析
姚华1,盛德仁1,林张新2,宋思远2,陈坚红1,李蔚1
1. 浙江大学 热工与动力系统研究所,浙江 杭州 310027;
2. 杭州汽轮机股份有限公司,浙江 杭州 310022
Thermodynamic performance analysis of associated energy
combined cycle system in ironmaking process
YAO Hua1, SHENG De-ren1, LIN Zhang-xin2, SONG Si-yuan2,
CHEN Jian-hong1, LI Wei1
1.Institute of Thermal Science and Power System, Zhejiang University, Hangzhou 310027, China;
2.Hangzhou Steam Turbine Limited Company, Hangzhou 310022, China
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摘要:

针对富余煤气和烧结余热分散回收利用效果不显著的问题,提出一种炼铁伴生能源联合循环发电方法.通过系统整合,即将烧结余热引入余热锅炉,与传统的富余煤气燃气-蒸汽联合循环系统耦合,构成炼铁工序伴生能源联合循环系统,使炼铁工序中伴生的富余煤气和烧结余热资源梯级利用.基于能量平衡、平衡和能级平衡理论,对系统整合前后热力学性能进行分析比对.绘制出整合前后系统的能流图和流图,并计算出系统中各个组件的能损失和损失.结果表明:在富余煤气初参数和蒸汽侧热力参数均相同条件下,整合后系统能效率及效率分别较整合前提高了1.51%和0.64%,而能级差降低了11.8%.

Abstract:

Aiming at the issue that separated recovery-and-utilization effect for surplus gas and sintering waste heat was not significant, a power generation method of associated energy combined cycle system in ironmaking process (AECCSIP) was proposed. Sintering waste heat was transported into heat recovery steam generator, and coupled with the traditional surplus-gas gas-steam combined cycle system by means of system integration, which formed the (AECCSIP) and cascade utilized the associated resources of surplus gas and sintering waste heat in ironmaking process. Based on the theory of energy, exergy and energy level balances, thermodynamic performances of the systems before and after integration were analyzed. The energy flow and exergy flow diagrams corresponding to the systems before and after integration were drawn and the energy loss and exergy destruction of each component were calculated. Results show that under the same conditions of initial parameters of surplus gas and thermodynamic parameters on steam side, energy and exergy efficiencies of the system after integration improve by 1.51% and 0.64%, respectively, than that of the system before integration, and energy difference decreases by 11.8%.

出版日期: 2011-12-08
:  TK 123  
基金资助:

浙江省科技厅科研资助项目(2009C21007).

通讯作者: 盛德仁,男,教授.     E-mail: shengdr@zju.edu.cn
作者简介: 姚华(1979-),男,博士生,从事动力系统性能优化方面的研究.E-mail: yaoh@zju.edu.cn
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引用本文:

姚华,盛德仁,林张新,宋思远,陈坚红,李蔚. 炼铁伴生能源联合循环系统热力学性能分析[J]. J4, 2011, 45(11): 2008-2013.

YAO Hua, SHENG De-ren, LIN Zhang-xin, SONG Si-yuan,CHEN Jian-hong, LI Wei. Thermodynamic performance analysis of associated energy
combined cycle system in ironmaking process. J4, 2011, 45(11): 2008-2013.

链接本文:

https://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2011.11.020        https://www.zjujournals.com/eng/CN/Y2011/V45/I11/2008

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