The testing and performance analysis of 260t/h CFB boiler for co-combustion of crop stalk and coal

Author

Jitang Liu ; Jingji Li ; Zhenghu Hao ; Hairui Yang ; Qing Liu ; Jianfeng Li

Author_Institution

Liaoning Province Key Lab. of Clean Combustion for Electr. Generation & Heat Supply Technol., Shenyang Inst. of Eng., Shenyang, China

Volume

1

fYear

2014

fDate

19-21 Aug. 2014

Firstpage

278

Lastpage

281

Abstract

Experiment on co-combustion of crop stalk and coal is carried out in a 260t/h CFB boiler, and the performance of the CFB boiler is tested under 4 mixing ratios of crop stalk to coal, 0%, 10%, 20% and 30%. The results show that under the 4 mixing ratios, the CFB boiler could run safely and stably with 85% MCR and the boiler thermal efficiency is almost the same. With the increase of mixing ratio, the amount of ash entering the boiler decreases accordingly. In order to meet the need for furnace ash, boiler drains ratio shall be reduced accordingly. With the increase of mixing ratio, the CO content in flue gas at the furnace outlet increases sharply from 98 ~ 310 ppm, and the flue gas temperature at furnace outlet also increases, while emissions of SO₂ decrease apparently.

Keywords

air pollution control; boilers; coal ash; combustion; flue gases; fluidised beds; furnaces; CFB boiler tested; Co-combustion; MCR; SO₂ emission reduction; boiler drains; boiler thermal efficiency; carbon monoxide content; circulating fluidized bed; coal; crop stalk; flue gas temperature; furnace ash; furnace outlet; Agriculture; Biomass; Boilers; Coal; Combustion; Furnaces; circulating fluidized bed; co-combustion; crop stalk; operating performance;

fLanguage

English

Publisher

ieee

Conference_Titel

Materials for Renewable Energy and Environment (ICMREE), 2013 International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4799-3335-8

Type

conf

DOI

10.1109/ICMREE.2013.6893665

Filename

6893665