IN2013KO01465AIN1465KO2013AIN2013KO01465AIN 2013KO01465 AIN2013KO01465 AIN 2013KO01465AIN 1465KO2013 AIN1465KO2013 AIN 1465KO2013AIN 2013KO01465 AIN2013KO01465 AIN 2013KO01465A
Authority
IN
India
Prior art keywords
furnace
fuel
particle size
air
size distribution
Prior art date
Application number
Inventor
Das Arijit
Prakash Tiwari Hari
Kumar Banerjee Pradip
Mukherjee Dr Ashis
Manish Kumar Mr
Santi Gopal Sahu Mr
Ashis Kumar Adak Mr
Original Assignee
Tata Steel Ltd
Central Inst Of Mining And Fuel Res Dhanbad
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tata Steel Ltd, Central Inst Of Mining And Fuel Res DhanbadfiledCriticalTata Steel Ltd
Priority to IN1465KO2013priorityCriticalpatent/IN2013KO01465A/en
Publication of IN2013KO01465ApublicationCriticalpatent/IN2013KO01465A/en
The invention relates to a process of optimization of oxygen concentration in blast air and particle size distribution of fuel for injection into a blast furnace to improve combustion of fuel, comprising the steps of: feeding of high rank coal in a particle size distribution from top portion of an electrically heated vertical furnace alongwith a controlled flow of primary air to carry the coal particles inside the furnace; injecting a pre-heating secondary air circumferentially into the furnace including excess air quantity about 20% over the stochiometric requirements; and supplying a pure oxygen stream with desired variable in oxygen flow, wherein the burnout efficiency of the high rank coal is increased.