Experimental study on low NOx emission using blast furnace gas reburning and industrial application in stoker boiler

Author(s):  
Bai-Qian Dai ◽  
Zhong-Xiao Zhang ◽  
Tuo Zhou ◽  
Xiao-Jiang Wu
Author(s):  
Xiaohu Yang ◽  
Qunli Zhang ◽  
Yu Niu ◽  
Donghan Sun ◽  
Xin Xiao ◽  
...  

2020 ◽  
Vol 269 ◽  
pp. 115091
Author(s):  
Qunli Zhang ◽  
Yu Niu ◽  
Xiaohu Yang ◽  
Donghan Sun ◽  
Xin Xiao ◽  
...  

2016 ◽  
Vol 1 (3) ◽  
pp. 53-59
Author(s):  
Venkateshkumar R ◽  
Kishor Kumar ◽  
Prakash B ◽  
Rahul R

2012 ◽  
Vol 512-515 ◽  
pp. 2135-2142 ◽  
Author(s):  
Yu Peng Wu ◽  
Zhi Yong Wen ◽  
Yue Liang Shen ◽  
Qing Yan Fang ◽  
Cheng Zhang ◽  
...  

A computational fluid dynamics (CFD) model of a 600 MW opposed swirling coal-fired utility boiler has been established. The chemical percolation devolatilization (CPD) model, instead of an empirical method, has been adapted to predict the nitrogen release during the devolatilization. The current CFD model has been validated by comparing the simulated results with the experimental data obtained from the boiler for case study. The validated CFD model is then applied to study the effects of ratio of over fire air (OFA) on the combustion and nitrogen oxides (NOx) emission characteristics. It is found that, with increasing the ratio of OFA, the carbon content in fly ash increases linearly, and the NOx emission reduces largely. The OFA ratio of 30% is optimal for both high burnout of pulverized coal and low NOx emission. The present study provides helpful information for understanding and optimizing the combustion of the studied boiler


2017 ◽  
Vol 36 (7) ◽  
pp. 649-655
Author(s):  
Xiao-Jiao Fu ◽  
Man-Sheng Chu ◽  
Jia-Qi Zhao ◽  
Shuang-Yin Chen ◽  
Zheng-Gen Liu ◽  
...  

AbstractIn order to realize comprehensive and massive treatment of boron mud secondary resource, fundamental study on boron mud applied to oxidized pellets production as additive was carried out in the paper under laboratory conditions. The effects of boron mud on the performance of oxidized pellets were investigated systemically, and boron mud was combined with other boron-rich material innovatively. The results showed that, within certain limits, boron mud can improve properties of oxidized pellets. The bentonite content decreased to 0.3 % when adding 1.0 % boron mud additive and the pellets met blast furnace requirements. With the combination additive content 0.8 %, bentonite content can be further decreased to 0.2 %, and the pellets properties were better than base pellet. Therefore, it was an effective way to reduce environmental pollution and optimize blast furnace operation by developing boron mud secondary resource as pellets additive.


Sign in / Sign up

Export Citation Format

Share Document