climate change – waste minimisation in thermal power generation

CLIMATE CHANGE – WASTE MINIMISATION IN THERMAL POWER GENERATION

ByDr V S S BHASKARA MURTY

Former Director & Advisor (Env Mgt)NATIONAL PRODUCTIVITY COUNCIL

CHENNAI

January 20. 2012

NATIONAL POWER TRAINING INSTITIUTE, NAGPUR1

V.S.S.Bhaskara Murty M.Tech (Chem Engg)

Former Director & Advisor (Env Mgt) Ambedkar Institute of Productivity

National Productivity Council, Chennai

Advanced Training inEnvironmental Protection at W GermanyPedagogic Training at AIT, BangkokEnvironmental Audit and ISO14000

More than 35 Years experience in consultancy and Man Power Training2

ENVIRONMENTAL PROTECTIONPRINCIPLE

VSSB

Law of Thermodynamics ……

ENERGY NEITHER CAN BE CREATED NOR CAN BEDESTROYED. IT CHANGES FROM ONE FORM TO OTHER..

Law of Environmental protection ……

POLLUTION CAN BE CREATED BUT CANNOT BE DESTROYED. POLLUTION CONTROL AT ONE PART ENVIRONMENT MAY CREATE POLLUTION AT ANOTHER PART OF ENVIRONMENT.

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ProductNaturalResources

AirEmissions

LandDischarges

Industrial Process

Air

Water

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THERMAL POWER GENERATION

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MATERIAL BALANCE

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COAL QUALITY – INDIAN & USA

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Supercritical Pressure Coal-Fired Thermal Power Plant

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SO2 – Dry Scrubbing Flow Diagram of CFBC Boiler

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SO2 – Wet Scrubbing

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Super Thermal Power Station – Franken AG, Nürnberg, Germany

Boiler Capacity: 2 x 200 MWFlue Gas Volume: 15,00,000 M3/hrSulfur Dioxide at Inlet: 2,000 – 2,500 mg/M3

Sulfur Dioxide at Outlet: < 200 mg/M3

Sulfur Dioxide Removal y: 90 %Lime Stone Consumption: 3,500 kg/hrGypsum Production: 5,800 kg/hr

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VOLKLINGEN POWER STATION, GERMANY

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CleanFlue Gases

Flue GasDesulfuri -sation Unit

Atmospheric Air Atmospheric Air

Flue Gasesfrom ESP

LimeGypsum

100 m

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SCR Reactor

Heater

Steam

SO2 Converter

Clean Gas

Air

Sulfuric Acid

Combustion Air

Cooling WaterAcid Condenser

Acid Recycle Vessel

WSACondenser

Flue Gas

Bag Filter

Air

Fuel

Start up Burner

Heat Exchanger

Mixer

Air

NH3

Fly Ash

2 NO + 2 NH3 + ½ O2 2 N2 + 3 H2O

2 SO2 + O2 SO3

SO3 + H2O H2SO4

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SNOX Process – Data(Vendsysselvaerket Power Station, Northern Jutland, Denmark)

Boiler Capactiy: 300 MWFlue Gas Volume: 9,00,000 M3/hrCoal/Oil Sulfur Content: 0.5% to 2.5%Desulfurisation Efficiency: 95%DeNOx: 90%Clean Gas Particulate

Matter Concentration: <1 mg/M3

Ammonia Consumption: 0.4 T/hrH2SO4 (95%) Production: 5.2 T/hr

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WASTE MINIM

ISATION

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THANK YOU

Bhasakara Murty

vssby@yahoo.com

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