The blast furnace process is a counter current flow reactor whose main purpose is to produce hot metal. This process uses as auxiliary fuel the injection of pulverized coal through the equipment termed the tuyere. However the injection point in the tuyere is of summary importance for the complete combustion of the pulverized coal, which in turn ...
Abstract −A pulverized coal injection increases the accumulation of fines in a blast furnace. The accumulation of fines in the lower part of the blast furnace diminishes the size of the raceway depth and gas flow into the deadman and, as a result, affects the steady state condition of the blast furnace.
Oct 21, 2018· Understanding Pulverized Coal Injection in Blast Furnace. Pulverized coal injection (PCI) is a wellestablished technology for hot metal (HM) production in a blast furnace (BF). It is practiced in most of the BFs and all the new BFs are normally built with PCI capability. The composition and properties of the coal used for injection can ...
Injection of pulverized coal in the blast furnace tuyere . PCI+ ® S Injection of pulverizedcoal. Injection of pulverized coal into the tuyères of blast furnaces using a static distributor. PCI+® S is characterized by: Main conveying pipeline to static distributor with injection pipelines .
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In blast furnace ironmaking, efforts are made to decrease the coke consumption mainly by increasing the pulverized coal injection rate. This will cause changes in infurnace reduction conditions, burden distribution and demands on raw material strength, etc. In order to maintain stable operation and minimize material losses
Abstract: Based on the computational fluid dynamics (CFD) technology, the modeling and simulation of multiphase flow in an ironmaking blast furnace (BF) with pulverized coal injection (PCI) is developed. In the simulations, many physical parameters of phases are visualized under different rate of PCI, showing the inner state of BF. Including the gas, solid, liquid and powder, four phases are ...
In order to understand the complicated infurnace phenomena of pulverized coal injection in ironmaking blast furnaces, a threedimensional CFD model has been developed to simulate the gasparticle behaviors in not only raceway cavity but also the surrounding coke .
Oct 25, 2017· In order to replace expensive coke, various fuels are added to the blast sent to the blast furnace: pulverized coal, natural gas, cokeoven gas, fuel oil, etc. A less common alternative is to introduce chunk anthracite through the charge hole.
Global pulverized flow supplied to the Blast Furnace as well as individual flows supplied to the hot blast tuyeres shall be controlled. Flow rate control may be of ... The pulverized coal injection technology is based on a combination of several unit operations. Main unit operations include: Pulverized Coal Injection PC PC WT WT FS
Use of pulverized coal as a supplementary fuel in ironmaking blast furnaces is of great importance for global requirements such as energy saving and environmental,2) In the early 1980th, the pulverized coal injection (PCI) rates were only 50–60 kg/tp (kg per ton of pigiron produced) and then went up to 150–200 kg/–7 ...
amount of pulverized coal. With a real blast furnace, the maximum injection amount is expected to be higher owing to its large heat capacity. 1. Introduction Injection of fine iron ore into a blast furnace through tuyeres was actively studied in the 1980s as a promising nextgeneration blast furnace .
Computational Analysis of Blast Furnace Pulverized Coal Injection For Iron Making 1Gourav Kumar Thakur,2Kawal lal Kurrey,3Abhishek bhushan scholar Ccet Bhilai 2Assistant professor ccet Bhilai 3Indian institute of technology Roorkee Abstract: The combustion characteristics of pulverized coal injection (PCI) in the blow pipe tuyere assembly using different injection patterns are ...
PDF | A novel approach to monitoring and control of the coal powder injection in a blast furnace is presented and discussed. Image analysis of video recordings is used as a means to estimate the ...
Nov 10, 2000· In order to reduce the cost of running blast furnaces (BFs), injected pulverized coal is used rather than coke to fire BFs. As a result of this, unburned fine materials are blown with the gas into the bosh and dead man areas with possible detrimental effects on gas flow and permeability of the coke column. The capacity of the furnace to consume these particles by solution loss is probably one ...
Coal injection system. Reduced pollution Coal grinding and injection systems are nonpolluting systems. Injecting pulverized coal into a blast furnace reduces the overall pollution made by coke production. Increased productivity Installation of a coal injection system can increase productivity through improved operation of the blast furnace.
Global Pulverized Coal Injection (PCI) System for Blast Furnaces Market Report 2019 Market Size, Share, Price, Trend and Forecast is a professional and indepth study on the current state of the global Pulverized Coal Injection (PCI) System for Blast Furnaces industry.