presentation coal

8/8/2019 Presentation Coal

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oa ua y – ew ara gm

YP Chawla.

+91 98107 [email protected]; [email protected]



• Energy Security

• ualit of Coal – Some of the im ortant

Characteristics• A New Paradigm

Blending – Most focused

More References on Power SectorSome references Steel Sector

Cement has been left out – my ignorance!!

A dynamic yet an harmonious blend away fromCustomary Fixed Blend meet the varying Loads

‘

Combustion Process & Requirements



Coal as Growth Driver : Currently supports 26% of primary energy

& 40% o ectr c ty enerat on an s m ar y n tee , ement &other Industry. Coal use forecast to rise over 60% to 2030, with develo in countries res onsible for 97% of this increase,primarily to meet electrification targets in India .



- th

Location Wise Details-12th

Plan Shelf for Thermal

Projects

Pit Heads- 50,825 MWoa en re- ,

Coastal -25,660 MW

– , ,

a scenario of 1,12,400MW

against 76,500 MW)

1,02,000 MW has been assessed for the 13th Plan



,Productivity and transport bottle neck. Compulsions of Coalimport and on the hindsight looked as a drive for NationalEconomic Energy Security by keeping the own reserves intactfor our future



Coal Demand in MT



Blue generally more than 1% & Red about 0.01%,

.



Preferred Value RangeRank Hi h volatile bituminous

VM content >30% (daf)Ash content < 25% (db)

Nitrogen content <3% (db)

Chlorine content <0.5% (db)Gross CV >22MJ kg-1 (ar)Sulphur content <2% (db)Ash anal sis <15% Fe2O3 in ash

Ash fusion temperatures Deformation (red.)>1100°C



Physical Coal. -

-.

moisture & fines content. Pneumatic handlingDifficulties -milled coal primarily on the sizedistribution of the Coal, which is influenced by HGI.

om us y. as urnou s assoc a e w gvolatile coals.

Char interaction with coke. The entry of un burntcoal char into the burden is inevitable at hi hinjection rates.



..

•

requirements. The cooling effect that coal

temperature can be compensated by

oxygen enrichment. The cooling effect is



Blending for the Right Coal Parameters

• e ow-gra e coa s m xe w t etter gra e coa w t outdeterioration in thermal performance of the boiler, thusreducin the cost of eneration. Term ’Coal Blendin ‘

recurring theme• Combustion efficiency and carbon loss has to be

• Equally important -aspects of Slagging, Fouling, and

emission characteristics viz. NOx Sox and articulates



Process optimization: Dynamic coal

blendin• helps improve the bottom line

• Advanced IT match coal quality to varying plantoperating & market conditions in real time.

• The results: lower fuel costs

• os p an s s use a xe coa en a ore or es gnof full-load of boiler

• Fixed Blend ma be of hi her ualit than needed durinpart-load operation , or lower than Peaking Load…. ThusChange Quality by Dynamic Blending - radical departure

- , ,to control single largest Expense – Variable.

• Payback for dynamic Blending – 10-18 Months ( Rs.Crs5 to 15 Capital Cost)



Dynamic coal blending.. Contd

•

each set of conditions requires a.

• To be truly useful, dynamic blending

use of a particular coal blend-such as the

Yet), ash handling, and heat rate



D namic coal blendin .. Contd

• D namic blendin can be used rofitabl at a lant if

some or all of the following criteria satisfied:• - The plant runs at lower loads at night and weekends.

• - Load projections for the coming four to 24 hours areavailable as a rough guideline.

• -used or can be purchased at the power plant.

• A relationship between load and coal quality is

established.• - There are specific, quality-related operational or derate

control.




• The fuel ard is well instrumented with enou h wei h

scales, level gauges, and position indicators available totrack the movement of all coal in the yard. On-line coal,

available.

• ----Handling of Dynamic Blending----• The quality of the coal entering the yard must be known.

• -- All movement of coal must be recorded and tracked.

• -- Data from standard coal yard measurements-weighscales and gate positions--must be available in




• Most im ortant the com lex nonlinear flow of coal in the

silos must be accurately modeled.• Accurate silo modeling

• Acurate Coal Flow modeled, you can use the qualitydata for the coals as they are loaded into the mill silos to

calculate the out ut ualit se uence.

• Right Quality coal at the right time



Tracing the TracesPulverizing to hit Optimization

Cleaning the Coal

• Clean Coal Technology (CCT) requires that all aspectsbe considered with respect to improvements in theextraction, production, beneficiation, utilization andenvironmental mana ement of coal and its carbon-based derivatives

Key Result Areas (KRA)

• e ec no og s s, rocess eve opers an eBusiness Developers have KRAs alike –to add value tothe bottom line & top line lift , adding net worth to theCompany’s balance sheet



Comprehensive outlook to Coal

•

• Coal Quality Analysis

• ua ty anagement at ne s te

• Fundamentals of Coal Combustion• Power Plant Coal Processes and

Performance Measures

• Impact of Coal Quality on Plant



Com rehensive outlook to Coal..Contd

•

• Delivering Quality Coal - Mine to End User

• e oa a n

• Stockpile Management• Coal Handleability

•

• Superintending Shipment Quality

• c v y: a cu a e e p mum en –

practical




• -

• Coal Beneficiation

• oa ttr utes ecte ze str ut on

• Prediction Characteristics• Combustion Processes & Performance

Prediction

• Impact on Power Plant Processes

• Slagging and Fouling Indices




•

• A huge loss for long distance consumers

from alternate sources irrespective of the.

• Affects the power plant equipment

en anc ng ma n enance cos .• For Imported Coal – the Strategic

participation in Port Development



• Coal value Optimization - maximizing our

of measures aimed at stabilization; as well-

mitigation action.



Conclude :Much is known about Coal ualit as well asBlending, much also remains to be learned.

• IT has come as a big boon Coal Blending to stimulatevar ous com na ons o oa s

• The Coal Consumers of India to encourage barter of Coalfrom different mines to win win solution for all.

• Independent coal regulator – in order to provide level

playing field with in India• Coal Price- Price de-regulation has been done in phase

manner. But still commercial mining is done by state-ownedcom anies there is indirect ovt. control

• Private sector participation – only allowed for captive coalmining. Currently , govt. considering to allow captive mineowner to se o t e r ro uct on outs e.

• Dedicated Railway Freight Corridor

presentation coal

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