炼钢转炉余能余热主要包括转炉烟气的显热和转炉煤气的潜热以及转炉渣的显热，合理回收利用转炉余能余热是实现转炉负能炼钢的关键。建立了转炉煤气驱动的开式燃气轮机热电冷联产（CCHP）装置有限时间热力学（FTT）模型。以装置总可用能率和第一定律效率为目标，在无煤气质量流率和装置尺寸约束下，优化了压气机进口相对压降和压比，得到了最大总可用能率和相应的煤气质量流率；在煤气质量流率和装置尺寸约束下，优化了压气机进口相对压降，得到了最优效率，同时联产装置各部件的面积分配也得到了优化。分析了煤气显热利用、放散率、循环总温比、发生器工质温度和供热温度等参数对装置最优性能的影响。
The residual energy and heat of basic oxygen furnace (BOF)mainly contain sensible heat of basic oxygen furnace flue gas,latent heat of basic oxygen furnace gas (BOFG),and sensible heat of BOF slag.It is very impor-tant to reasonably recover the residual energy and heat of BOF for achieving ‘minus-energy’steelmaking.A finite time thermodynamics (FTT)model of an open gas turbine CCHP (combined cooling,heating and power)plant driven by BOFG is established.By taking total useful energy rate and first law efficiency as objectives,when there is no constraint for gas mass flow rate and total size of the plant,the relative pressure drop of compressor inlet and pressure ratio are optimized,and the maximum total useful energy rate and the corresponding gas mass flow rate are obtained.In the case of constraints for gas mass flow rate and total size,the relative pressure drop of compressor in-let is optimized and the optimal efficiency is obtained;the flow area distributions of components of the plant are also optimized.The effects of parameters (such as sensible heat utilization of the gas,gas release rate,cycle temperature ratio,generator working fluid temperature and consumer-side temperature,etc.)on the optimal performances of the plant are analyzed.
参考文献
| [1] | 殷瑞钰.冶金流程工程学[M].北京:冶金工业出版社,2009 |
| [2] | 陆钟武;蔡九菊.系统节能基础[M].沈阳:东北大学出版社,2010 |
| [3] | 郦秀萍,蔡九菊,殷瑞钰,王鼎,周庆安.转炉炼钢工序最小能耗的研究[J].钢铁,2003(05):50-52. |
| [4] | 田蜜,李海洋.武钢200t转炉“负能炼钢”技术的开发及应用[J].中国冶金,2013(02):37-39,43. |
| [5] | Z.C. Guo;Z.X. Fu .Current situation of energy consumption and measures taken for energy saving in the iron and steel industry in China[J].Energy,2010(11):4356-4360. |
| [6] | Bejan A. .ENTROPY GENERATION MINIMIZATION - THE NEW THERMODYNAMICS OF FINITE-SIZE DEVICES AND FINITE-TIME PROCESSES [Review][J].Journal of Applied Physics,1996(3):1191-1218. |
| [7] | Hoffmann K H;Burzler J M;Schubert S .Endoreversible Thermodynamics[J].J Non-Equilib Thermodyn,1997,22(04):311. |
| [8] | Chen L;Wu C;Sun F .Finite Time Thermodynamic Optimi-zation or Entropy Generation Minimization of Energy Systems[J].J Non-Equilib Thermodyn,1999,24(04):327. |
| [9] | Chen L;Bi Y;Wu C .Influence of Nonlinear Flow Resistance Relation on the Power and Efficiency From Fluid Flow[J].Journal of Physics D:Applied Physics,1999,32(12):1346. |
| [10] | 陈林根.不可逆过程和循环的有限时间热力学分析[M].北京:高等教育出版社,2005 |
| [11] | 吴锋;陈林根;孙丰瑞.斯特林机的有限时间热力学优化[M].北京:化学工业出版社,2008 |
| [12] | Bjarne Andresen .Current Trends in Finite-Time Thermodynamics[J].Angewandte Chemie,2011(12):2690-2704. |
| [13] | 王文华,陈林根,戈延林,孙丰瑞.燃气轮机循环有限时间热力学研究新进展[J].热力透平,2012(03):171-178,208. |
| [14] | 张万里,陈林根,韩文玉,吴智文.正反向布雷顿循环有限时间热力学分析与优化研究进展[J].燃气轮机技术,2012(02):1-11. |
| [15] | Qin X;Chen L;Ge Y et al.Finite Time Thermodynamic Studies on Absorption Thermodynamic Cycles:A State of the Arts Review[J].ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING,2013,38(02):405. |
| [16] | Ngouateu Wouagfack P A;Tchinda R .Finite-Time Thermo-dynamics Optimization of Absorption Refrigeration Systems:A review[J].Rene Sustain Energy Rev,2013,21:524. |
| [17] | 赵冠春;钱立伦.火用分析及其应用[M].北京:高等教育出版社,1984 |
| [18] | 沈维道;蒋智敏;童钧耕.工程热力学[M].北京:高等教育出版社,2001 |
| [19] | 张有礼,王维兴.钢铁工业能源结构与节能[J].中国冶金,2006(10):1-3,8. |
| [20] | 郭汉杰,尹志明.钢铁冶金流程节能空间研究[J].钢铁,2007(02):77-81. |
| [21] | Bejan A;Dan N .Maximum Power From Fluid Flow[J].International Journal of Heat and Mass Transfer,1996,39(06):1175. |
| [22] | Gordon C O.Aerodynamics of Aircraft Engine Components[M].New York:AIAA,1985 |
| [23] | Radcenco V.Optimization Criteria for Irreversible Thermal Processes[M].Bucharest:Editura Tehnica,1979 |
| [24] | Chen L;Zheng T;Sun F et al.Performance Limits of Real Ab-sorption Refrigerators[J].JOURNAL OF THE ENERGY INSTITUTE,2005,78(03):139. |
| [25] | Radcenco V;Vargas J V C;Bejan A .Thermodynamics Opti-mization of a Gas Turbine Power Plant With Pressure Drop Irreversibilities[J].ASME Trans J Energy Res Tech,1998,120(03):233. |
| [26] | Chen L;Li Y;Sun F et al.Power Optimization of Open-cy-cle Regenerator Gas-Turbine Power Plants[J].Appl Ener-gy,2004,78(02):199. |
| [27] | Zhang W;Chen L;Sun F .Power and Efficiency Optimiza-tion for Combined Brayton and Inverse Brayton Cycles[J].Applied Tnermal Engineering,2009,29(14/15):2885. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%