[1]曹文,郑丹星.天然气CO2转化化学回热热力循环[J].东南大学学报(自然科学版),2006,36(5):790-794.[doi:10.3969/j.issn.1001-0505.2006.05.022]
 Cao Wen,Zheng Danxing.Power generation cycle with chemical recuperation by CO2/NG reforming of methane[J].Journal of Southeast University (Natural Science Edition),2006,36(5):790-794.[doi:10.3969/j.issn.1001-0505.2006.05.022]
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天然气CO2转化化学回热热力循环()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
36
期数:
2006年第5期
页码:
790-794
栏目:
能源与动力工程
出版日期:
2006-09-20

文章信息/Info

Title:
Power generation cycle with chemical recuperation by CO2/NG reforming of methane
作者:
曹文 郑丹星
北京化工大学化学工程学院, 北京 100029
Author(s):
Cao Wen Zheng Danxing
School of Chemistry Engineering, Beijing University of Chemical Technology, Beijing 100029, China
关键词:
化学回热 天然气CO2转化 氨吸收制冷 进气冷却
Keywords:
chemical recuperation CO2/NG reforming ammonia absorption refrigeration inlet gas cooling
分类号:
TK474
DOI:
10.3969/j.issn.1001-0505.2006.05.022
摘要:
提出了一种由天然气CO2转化化学回热动力循环和氨吸收制冷循环构成的新型O2/CO2热力循环系统.其中,采用天然气CO2转化化学回热回收较高温度的燃气透平排气热量,采用氨吸收制冷循环回收较低温度的排气热量,并利用制冷循环产生冷量作CO2循环压气机进气冷却.研究了该循环的热力学性能及其影响参数,考察了循环压比和进气冷却温度对系统循环的影响规律.新循环的系统模拟结果表明,基于1 kg/s的CH4进料流量及透平初温1 573.15 K条件,系统产功24.799 MW,发电效率达到49.6%,并可输出冷量0.609 MW.系统综合火用效率达到47.9%.同时,可回收2.246 kg/s的水,捕集2.743 kg/s液态形式的CO2,实现了循环系统的CO2和NOx准零排放.
Abstract:
A novel power cycle system composed of a chemical recuperative cycle with CO2/NG(natural gas)reforming and an ammonia absorption refrigeration cycle is proposed. In which, the waste heat from the turbine exhaust is recovered to drive CO2/NG reformer, and the lower temperature heat is provided with the ammonia absorption refrigeration cycle to generate chilled media used for cooling the turbine inlet gas. A detailed thermodynamic analysis was carried out to reveal the performance of the proposed cycle and the influence of key parameters on the cycle performance. Based on 1 kg/s of methane feedstock and the turbine inlet temperature of 1 573 K, the simulation results show that the optimized net power generation efficiency of the cycle can reach 49.6% and the exergy efficiency 47.9%; the new cycle system produces a net electric-power of 24.799 MW and exports chilled load of 0.609 MW; about 2.246 kg/s water is collected and 2.743 kg/s liquid CO2is captured, which achieves a quasi zero-emission of CO2 and NOx.

参考文献/References:

[1] Ashcroft A T,Cheetham A K,Green M L H,et al.Partial oxidation of methane to synthesis gas using carbon dioxide[J]. Nature,1991,352(18):225-226.
[2] Yantovs Ki E I,Stac K Downward.Zero emission fuel-fired power plants concept[J]. Energy Convers Mgmt,1996,37(6-8):867-877.
[3] Okawa M,Kimura N,Kiga T,et al.Trial design a CO2 recovery power plant by burning pulverized coal in O2/CO2[J].Energy Convers Mgmt,1997,38(l):123-127.
[4] Mathieu P,Nihart R.Zero-emission MATIANT cycle[J].Transactions of the ASME,1999,121(2):116-212.
[5] Janes J.Chemically recuperated gas turbine[R].California:California Energy Commission Staff:Report P500-92-015,CEC,1992.
[6] Cau G,Cocco D.Performance assessment of semi-closed chemical recuperated gas turbine systems[R].New York:ASME Paper 2000-GT-161:ASME,2000.
[7] Ren J Y,Qin W,Egolfopoulos F N,et al.Methane reforming and its potential effect on the efficiency and pollutant emissions of lean methane-air combustion[J].Chem Eng Science,2001,56(4):1541-1549.
[8] Garg D,Armor J N,Martena K D J,et al.Process for producing carburizing atmospheres:US,US6287393 [P].2001.
[9] Gregoriy V,Vladimir K.The use of chemical recuperation of heat in a power plant[J]. Energy,2004,29(3):379-388.
[10] Mathieu P,Nihart R.Sensitivity analysis of the MATIANT cycle[J].Energy Convers Mgmt,1999,40(15,16):1687-1700.

备注/Memo

备注/Memo:
基金项目: 国家自然科学基金资助项目(90210032,50576001).
作者简介: 曹文(1974—),男,博士生; 郑丹星(联系人),男,教授,博士生导师,dxzh@mail.buct.edu.cn.
更新日期/Last Update: 2006-09-20