Process simulation of a lignite-fired circulating fluidized bed boiler integrated with a dryer and a pyrolyzer

被引：10
|
作者：
Cai, L. [1 ,2 ]
Zhang, Y. [1 ,2 ]
Gao, S. [1 ]
Xiao, X. [1 ]
Zhang, J. [1 ]
Xu, G. [1 ]
Cui, L. [2 ]
机构：
[1] Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100190, Peoples R China
来源：
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS | 2016年 / 38卷 / 02期
基金：
中国国家自然科学基金; 对外科技合作项目（国际科技项目）;
关键词：
Aspen Plus; circulating fluidized bed boiler; combustion; drying; polygeneration; pyrolysis; EXERGY ANALYSIS; COAL PYROLYSIS; POWER-PLANT; SYSTEM; GASIFICATION; ENERGY; CYCLE; GAS;
D O I：
10.1080/15567036.2011.631972
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
A process model using Aspen Plus was established to simulate the performance of a lignite-fired 1,025 t/h circulating fluidized bed boiler integrated with a dryer and a pyrolyzer for improving the energy efficiency. The combustion module of the proposed model was first verified by design data and the system characteristics of the circulating fluidized bed boiler combined with the coal dryer and the pyrolyzer were then investigated. The most suitable case for the retrofit of existing 1,025 t/h CFB boilers is that 35% of the coal was dried and then pyrolyzed with the energy efficiency of 95.3% and exergy efficiency of 50.2%. The results demonstrate the lignite-fired circulating fluidized bed boiler integrated with a dryer and a pyrolyzer facilitates the system performances effectively.
引用
收藏
页码：190 / 201
页数：12
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