Journal of South China University of Technology (Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (3): 83-89.doi: 10.3969/j.issn.1000-565X.2011.03.017

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

Design and Performance Analysis of Poly-Generation System for Methanol Synthesis and Electric Power Generation with Coke Oven Gas as Raw Material

 Zhang Xue-lei  Chen Hai-ping  Wang Song-ling  Zhou Lan-xin   

  1. University of north China electric power equipment state monitoring and control power the key laboratory, heibei baoding 071003
     
  • Received:2010-03-24 Revised:2010-06-02 Online:2011-03-25 Published:2011-02-01
  • Contact: 张学镭(1977-)，男，博士，讲师，主要从事先进能源动力系统的建模与优化等研究 E-mail:xueleizh@163.com
  • About author:张学镭(1977-)，男，博士，讲师，主要从事先进能源动力系统的建模与优化等研究
  • Supported by:

    中央高校基本科研业务费专项资金资助项目(09MG34)

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Abstract:

In order to reasonably utilize coke oven gas（COG）,first,a Lurgi gas-phase methanol synthesis system was designed,with COG as the raw material,and the key parameters of the system were obtained by the simulation with Aspen Plus.Next,the performance of gas-steam combined cycle firing COG was calculated and compared with that firing natural gas.Then,a parallel poly-generation system for gas-phase methanol synthesis and electric power generation was designed.Finally,a performance comparison was performed between the designed system and the exi-sting one-product system.The results show that the carbon supplementation before reformer increases the methanol yield and decreases the energy consumption by about 6%,that the net power and thermal efficiency of the combined cycle respectively decrease by 0.87% and 0.91% when substituting COG for natural gas,and that the thermal efficiency of the poly-generation system is about two points of percentage higher than that of the one-product system.Thus,it comes to the conclusion that the proposed poly-generation system with carbon supplementation before reformer is of the highest thermo-economic benefit.

Key words: coke oven gas, methanol, gas turbine combined cycle, poly-generation, performance