Transcript Details here

Industrial Training Presentation
Student Name: MANI Shankar
Roll No : M110287EE
Department: Electrical Engineering Department
Training Company:
Visvesvaraya Iron and Steel Plant
(VISL)
Training Site: Bhadravathi,Karnataka
Supervisor: Dr. Ravi Shankar
Presentation Intro
Summary:
I had my industrial training in VISL Bhadravathi,Karnatka. My
work was focusing on finding energy saving opportunities in
process.
Presentation Topics:
1.Details of my training Bhadravathi.
2.Process Flow chart of Visl
3.Suggestion and Findings.
Training History
Work Sequence:
First 10 Days Understanding the Steel making at VISL
and finding
energy saving opportunities.
Next 7 Days
Work had focused on developing strategies to
save energy and workout technical feasibility of
suggestions.
Last 4 Days
Writing the final report to submit to VISL.
Work Contribution
Findings and Suggestions
1. .BOF Oxygen blowing end point determination. Due to manual
determination of end of blow point of oxygen, lot of iron is getting
wasted as slag. This reduces the yield factor of the BOF process and
increases the amount of CO2 gas released into the atmosphere. If a
dynamic model can be implemented on the basis of flue gas
composition and temperature, productivity and the yield factor of BOF
process can be significantly improved.
2. In Cooling Tower possibility 11.25 kW power generation with of 3 micro
Hydel power plant .
Work Contribution
Micro Hydel power Plant from cooling Tower
Height of tower(H)= 4m
Discharge(Q) = 0.375m3/sec= 375l /s
Efficiency( )= .75
Pth  gh  10 h  10 * .75 * 375 * 4  11250W  11.25kW
The Tower has three outlet so we suggested three Micro Hydel power
Plant.
Basic oxygen Furnace(BOF)
The purpose of the Basic Oxygen Steelmaking (BOS) process is to refine the hot metal
produced in the blast furnace into raw liquid steel, which may be subsequently refined in the
secondary steelmaking shop.
The main functions of the Basic Oxygen Furnace (BOF) are to decarburize and remove
phosphorus from the hot metal, and to optimize the steel temperature so that any further
treatments prior to casting can be performed with minimal reheating or cooling of the steel.

End-Point Control
The static charge calculation provides an estimate of oxygen and
cooling agent requirements. Final adjustments are made 2 to 3
minutes before the expected end of blow. These additions are
calculated from a measurement done by, for example, sublance
or drop-in thermocouple, or from an estimate (gas analysis) of
%C and steel temperature at that time.
BOF Automation
End Point Detection using Dynamic Method
Main Sensors
Dynamic model:
Chemical and temperature measurements using sublance and/or drop-in
Based on Flue gas
temperature and composition analysis.
thermocouples

Off-gas flowrate, composition and temperature.

Off-gas analysis can be used to estimate :

Carbon content from instantaneous rate of deC towards the end of the blow
(cumulative mass balance from the start is not precise enough due to inaccurate
knowledge of input carbon)

Sonic device or lance vibration to detect slag foaming

Lance height measurement

Detection of metal height and/or slag level

Accurate weighing of input and output materials

Control and regulation of fluids and solids (O2, N2, ore, lime, …)

Electromagnetic slag detection sensor in the taphole

Flowrate and temperature of hood cooling water, pressure in the hood

Laser inspection of refractory wear
BOF Automation
End Point Detection using Dynamic Method
Conclusion
Industrial Training Objectives fulfilled.
Problems faced during training.
Project Fulfilment:
Importance of Project for VISL
Door still open for improvement.
.
Benefits from Training.
you
for
list
hank you for listening
Any Questions..?
y Question
Thank you for listening,
Any Questions..?