presentation coal
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8/8/2019 Presentation Coal
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oa ua y – ew ara gm
YP Chawla.
+91 98107 08707ypchawla@gmail.com; yp.chawla@apollotyres.com
8/8/2019 Presentation Coal
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• 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
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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 .
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- 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
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,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
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Coal Demand in MT
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Blue generally more than 1% & Red about 0.01%,
.
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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
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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.
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..
•
requirements. The cooling effect that coal
temperature can be compensated by
oxygen enrichment. The cooling effect is
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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
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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)
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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
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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.
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D namic coal blendin .. Contd
• 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
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D namic coal blendin .. Contd
• 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
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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
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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
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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
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Com rehensive outlook to Coal..Contd
• -
• 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
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Com rehensive outlook to Coal..Contd
•
• 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
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• Coal value Optimization - maximizing our
of measures aimed at stabilization; as well-
mitigation action.
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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
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