Improving BA & FA evacuation

Improving the Bottom Ash and Fly Ash Evacuation

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Achyut ChandraB.Tech Mechanical and Automation Engineering + MBA

Agenda

Organizational overview

Plant ParametersAsh Handling

System

Approach towards problems

faced and learn the

advancements employed

Improvements / Enhancements

suggestedConclusion

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Founded in 1911, India’s largest power company with significant international presence

Total installed generation capacity of 8521 MW in India

Significant extensions in Alternate Energy resources

Thermal power plants- Trombay (Mumbai), Mundra (Gujarat), Jojobera and Maithon in Jharkhand, Haldia (West Bengal) and Belgaum (Karnataka); Current report on Mundra UMPP

Government of India , in agreement of ‘Power to all by 2012’ , initiated the concept of UMPP’s in 2005

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Plant Overview

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Ash Handling System- BAHS & FAHS• Collection, Handling and Disposal of Ash

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Bottom Ash Handling System

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Fly Ash Handling System

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BA- Problems encountered & Advancements done

Clinker formations

Slagging of furnace

walls

Delay in evacuation

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FA- Problems encountered & Advancements done

Lump formations

Passing's and leakages

Drop in Vacuum, Pressure

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Improvements Suggested for Bottom Ash

Introduction of pulverisers adjacent to the slurry sump

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Introduction of a series of clinker grinder

Manual evacuation of clinkers using detachable bins

Continual Preventive maintenance

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Improvements Suggested for Fly AshChange in rotary feeder and discharge line design

Concretization of the Silo area for faster evacuation

Continual Preventive maintenance

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Conclusions

• Safety is a priority

• Increased coal prices , leading to coal blending

• Design coal v/s Actual coal

• Abnormalities in Ash Handling System

• Better engineering solutions to a

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Comprehensive

Efficient

Ethical

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