Student Name: MANI ShankarMANI Shankar

Roll No : M110287EEM110287EE

Department: Electrical Engineering DepartmentElectrical Engineering Department

Training Company: Visvesvaraya Iron and Steel Plant (VISL)

Training Site: Bhadravathi,KarnatakaBhadravathi,Karnataka

Supervisor: Dr. Ravi ShankarDr. Ravi Shankar

Industrial Training PresentationIndustrial Training Presentation

Summary:Summary:

I had my industrial training in VISL Bhadravathi,KarnatkaBhadravathi,Karnatka. My work was focusing on finding energy saving opportunities in process.Presentation Topics:Presentation Topics:

1.Details of my training BhadravathiBhadravathi.2.Process Flow chart of Visl3.Suggestion and Findings.

Presentation Intro

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.

Training History

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

Work Contribution

Height of tower(H)= 4mDischarge(Q) = 0.375m3/sec= 375l /sEfficiency( )= .75

The Tower has three outlet so we suggested three Micro Hydel power Plant.

kWWhghPth 25.11112504*375*75.*1010

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

Chemical and temperature measurements using sublance and/or drop- in

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

Dynamic model:

Based on Flue gas temperature and composition analysis.

BOF Automation

End Point Detection using Dynamic Method

Industrial Training Objectives fulfilled.

Problems faced during training.

Project Fulfilment:Importance of Project for VISL

Door still open for improvement..

Benefits from Training.

Conclusion

Thank you for listening,Any Questions..?

Thank you for listening,Any Questions..?Thank you for listening,Thank you for listening,

Any Questions..?Any Questions..?