Influence of conveyance methods for pulverised coal injection in a blast furnace
- 5 August 2016
- journal article
- research article
- Published by Taylor & Francis Ltd in Iron and Steelmaking
- Vol. 44 (7), 513-525
- https://doi.org/10.1080/03019233.2016.1217116
Abstract
Pulverised coal injection (PCI) is a widely adopted industry practice for reducing blast furnace coke rates. The conditions under which pulverised coal (PC) is injected and combusted, including the co-injection of natural gas (NG), can lead to complex combustion phenomena inside the blast furnace, which must be understood to provide improved furnace performance. This research examines computational simulations of the co-injection phenomena, as well as the industrial drivers behind the project. A wide-ranging parametric study was conducted utilising numerous variations in furnace operating conditions, as well as a new technique for the conveyance of PC. It was found that utilising NG as the carrier gas for PCI could increase coal burnout across the raceway region from about 71% to approximately 87% without altering the design of the tuyere/blowpipe region, with an increase to 96% possible if a shift to a dual lance design for NG injection is considered.Keywords
This publication has 14 references indexed in Scilit:
- Injection of Pulverized Coal and Natural Gas into Blast Furnaces for Iron-making: Lance Positioning and DesignISIJ International, 2015
- Numerical Study on Pulverized Biochar Injection in Blast FurnaceISIJ International, 2014
- Numerical analysis of flow and combustion behavior in tuyere and raceway of blast furnace fueled with pulverized coal and recycled top gasEnergy, 2012
- CFD Modelling and Analysis of Pulverized Coal Injection in Blast Furnace: An OverviewSteel Research International, 2011
- Blast furnace operation with natural gas injection and minimum theoretical flame temperatureIron and Steelmaking, 2009
- Making blast-furnace smelting more efficient through the injection of heated natural gasMetallurgist, 2007
- Numerical studies of pulverized coal combustion in a tubular coal combustor with slanted oxygen jet☆Fuel, 2003
- Co-injection of Noncoking Coal and Natural Gas in Blast Furnace.ISIJ International, 1999
- Integrated Mathematical Model of Pulverised Coal Combustion in a Blast Furnance.ISIJ International, 1997
- Prediction of High-Intensity Pulverized Coal CombustionCombustion Science and Technology, 1986