Influence of Collapse Phenomenon on Unburned Pulverized Coal in the Lumpy Zone of COREX Melter Gasifier

2013 ◽  
Vol 774-776 ◽  
pp. 1434-1437 ◽  
Author(s):  
Xiao Lei Zhou ◽  
Zhong Ning Du
Keyword(s):  
Thermal Model ◽  
Packed Bed ◽  
Physical Experiment ◽  
Pulverized Coal ◽  
Experimental Results ◽  
Blast Temperature ◽  
Pulverized Coal Injection ◽  
Coal Injection ◽  
Corex Melter Gasifier ◽  
Lump Coal

A thermal model was established for the study about influence of collapse phenomenon on unburned pulverized coal in COREX melter gasifier. In the model, the ore was simulated by wax, the coke and lump coal were simulated by maize, UPC is simulated by pulverized coal. The results showed that too high blast temperature could lead to collapse in the model, and under normal or collapsing furnace state, UPC is dispersed or aggregated distribution in packed bed. According to this experimental results and the previous research results, the suggestions about COREX were given at last. Keywords: COREX melter gasifier; pulverized coal injection; unburned pulverized coal; physical experiment

Technological Development Orientation on Ironmaking of Contemporary Blast Furnace

2014 ◽  
Vol 875-877 ◽  
pp. 1138-1142
Author(s):  
Fu Ming Zhang ◽  
Chao Zhen Cao ◽  
Xiang Long Meng ◽  
Lin Li
Keyword(s):  
Blast Furnace ◽  
Technological Development ◽  
Injection Rate ◽  
Pulverized Coal ◽  
Enrichment Ratio ◽  
Blast Temperature ◽  
Pulverized Coal Injection ◽  
Coal Injection ◽  
Development Orientation ◽  
And Function

The present status and challenges of blast furnace (BF) ironmaking technology are analyzed, and the developing targets of the contemporary BF ironmaking process are mentioned. The significance and function of high blast temperature and oxygen enriched-pulverized coal injection for BF are described. The key technologies of high blast temperature is discussed and evaluated emphatically. Promoting blast temperature and improving oxygen enrichment ratio, as well as enhancing pulverized coal injection rate which are important guarantee for saving fuel consumption, reducing operation cost, and realizing sustainable development. There are broad developing prospects of contemporary BF process under the condition of high blast temperature and low fuel ratio ironmaking technologies are applied.

Technological Status and Tendency of Modern Blast Furnace

2013 ◽  
Vol 813 ◽  
pp. 192-195
Author(s):  
Fu Ming Zhang ◽  
Chao Zhen Cao ◽  
Xiang Long Meng ◽  
Lin Li
Keyword(s):  
Blast Furnace ◽  
Oxygen Enrichment ◽  
Pulverized Coal ◽  
Enrichment Ratio ◽  
Blast Temperature ◽  
Pulverized Coal Injection ◽  
Key Technologies ◽  
Coal Injection ◽  
And Function ◽  
Operation Cost

In this paper, the present status and challenges of blast furnace (BF) ironmaking technology are analyzed, and the developing tendencies of the modern BF ironmaking technology are mentioned. The significance and function of high blast temperature and oxygen enriched-pulverized coal injection for BF ironmaking are described. The key technologies of high blast temperature, oxygen enriched, and pulverized coal injection (PCI) are discussed and evaluated emphatically. Promoting blast temperature and improving oxygen enrichment ratio, as well as enhancing PCI rate which are important guarantee for saving fuel consumption, reducing operation cost, and realizing sustainable development. There are broad developing prospects of modern BF process under the condition of high blast temperature and low fuel ratio ironmaking technologies are applied.

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