Study of the combustion behaviour and temperature of pulverised coal in a tuyere zone of blast furnace

ABSTRACT

The combustion behaviour and temperature of pulverised coal in a tuyere zone of the blast furnace could benefit to adjust the operation parameters, assure the stable state as well as maintaining high quality of hot metal of the blast furnace. However, there have been rare studies about this subject. In this paper, the digital imaging system based on the colour charge coupled device within gas-cooling and dustproof functions was established to capture the combustion radiation in the tuyere zone. For instance, images of tuyere zones of 2000 and 2500 m³ blast furnaces were detected through a peephole in front of the blowpipe by the application of digital imaging and image processing techniques, and the temperature distributions were also calculated. Some measurements were used to improve the accuracy of the results, and the combustion behaviour was also analysed.

KEYWORDS:

• Tuyere zone
• pulverised coal
• combustion behaviour
• temperature

Disclosure statement

No potential conflict of interest was reported by the authors.

ORCID

Dongdong Zhou http://orcid.org/0000-0003-4986-729X

Additional information

Funding

The authors would gratefully acknowledge the financial support from the National Natural Science Foundation of China (61271303, 61571040).