Technological advancements in evaluating the performance of the pulverized coal injection through tuyeres in blast furnace

被引：8

作者：

Agrawal, Ashish ^{[1
]}

Tiwari, Rohit Kumar ^{[2
]}

Kumar, Sanjiv ^{[1
]}

Chatterjee, Rajeswar ^{[1
]}

Singh, Basant Kumar ^{[1
]}

Singh, Rama Shankar ^{[1
]}

Tripathi, Vineet Ranjan ^{[1
]}

Kundu, Subhashis ^{[1
]}

Padmapal ^{[1
]}

Ramna, R. V. ^{[1
]}

Singh, Manish Kumar ^{[1
]}

机构：

[1] Tata Steel Ltd, Jamshedpur, Bihar, India

[2] Tata Steel Ltd, Kalinganagar, India

来源：

METALLURGICAL RESEARCH & TECHNOLOGY | 2020年 / 117卷 / 06期

关键词：

Pulverized coal injection; blockage; raceway; tuyere camera; coal combustion; LIQUID FLOW DISTRIBUTIONS; NATURAL-GAS INJECTION; COMBUSTION BEHAVIOR; NUMERICAL-SIMULATION; TEMPERATURE-FIELD; COAL/COKE COMBUSTION; COMPUTER-SIMULATION; FLAME TEMPERATURE; RACEWAY SIZE; IRONMAKING;

D O I：

10.1051/metal/2020068

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The pulverized coal injection (PCI) is pursued to reduce the hot metal production cost by replacing the expensive metallurgical coke with the non-coking coal. Increasing the PCI rate causes various difficulties in the blast furnace (BF) operation. In the present work, an attempt is made to review the various aspects of PC injection in BF such as the challenges with increasing the PCI rate and modifications in the injection system to circumvent the concerns related to higher PCI rate. Various methods for detecting the tuyere blockage and failure caused due to the high PCI rate are elaborated. The factors influencing the combustion of coal in front of tuyeres have been discussed and their impact in the replacement ratio has been discussed. Further, recommendations are made to improve the coal combustibility in front of tuyeres.

引用

页数：22

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