Reduction of CAPEX in Coal Milling andD id Drying · PDF fileLOESCHE 3-roller coal mill...

Reduction of CAPd D iand Dryi

2010 Gasification Tech31. – 03.11.2010

LOESCHPresenPresenTobias

tobias.korz@Duesseldorf

PEX in Coal Milling U itng Units

hnologies Conference Washington DC

E GmbHnted bynted bys Korz

@loesche.derf, Germany

Reduction of CAPEX in Co

- Contents -Contents

Introduction

Range of Products

Functional Principle of LOESCHE co

Development of Coal MillsDevelopment of Coal Mills

Module-Design-Concept

Coal Mill Properties

Economy of Scale

References

Conclusion

010 Gasification Technologies Conference

al Milling and Drying Units

al mills

5-Nov-10 2


- Introduction -Introduction

LOEScompcompCertifManaMana

EmploEmploEmploTurno


Turno


SCHE GmbH is a privately owned pany founded 1906 in Berlin Germanypany founded 1906 in Berlin, Germanyfied according to DIN EN ISO 9001agement: Dr Thomas Loescheagement: Dr. Thomas Loesche

Dr. Joachim Kirchmaoyees in Duesseldorf: 320oyees in Duesseldorf: 320oyees worldwide: approx. 650over 2009: approx Euro 308 millions

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over 2009: approx. Euro 308 millions


- Introduction -Introduction

The LOESC



CHE Group

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- Range of Products -Range of Products

Cement raw material grinding plantg g pcement raw material and drive moto

G i di l t f t li kGrinding plants for cement clinker uup to 250 t/h with very high finenes

Dry-grinding plants for coal with a cwide range of coals varying from stlignite, pre-dried lignite, petcoke an

Grinding plants with Loesche grindiGrinding plants with Loesche grindiminerals and ferrous or non-ferrous

Hot Gas Generators with an outlet tcan be operated using traditional he



ts for a capacity up to 1.200 t/h of p y pors up to 7.000 kW

t 350 t/h d bl t f lup to 350 t/h and blast furnace slag ses

capacity up to 300 t/h, grinding a team coal, bituminous-, anthracite-, nd even biomass pellets

ing mills for the processing ofing mills for the processing of s ores.

temperature of up to 1,000° C which eating media and low-calorific gases

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- Functional Principle of LOESCHEFunctional Principle of LOESCHE



Coal Mills -Coal Mills

LOESCHE 3-roller coal mill

Typical Fineness:yp

5% > 90µm to 35% > 90µm

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- Development of Coal Mills -Development of Coal Mills



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TTec

Tab

No.

Nom

Driv

R fRef

8 x


Loca


h i l d t f th LM 43 4 Dchnical data of the LM 43.4 D

ble diameter: 4.3 m

. of grinding rollers: 4

minal capacity: 210 t/h

ve unit: 1.600 kW

fferences:

sold to India and Vietnam

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ation: Tadipatri – Andhra Pradesh, India



TTec

Tab

No.

Nom

Driv



h i l d t f th LM 53 6 Dchnical data of the LM 53.6 D

ble diameter: 5.3 m

. of grinding rollers: 6

minal capacity: 305 t/h

ve unit: 2.300 kW

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- Module-Design-Concept -Module Design Concept

2 Roller M2-Roller-Module:

oller (without Tire)( )

ocker Arm

pring Unit (inside)pring Unit (inside)edestal

Different Modules are available for 2-, which are field proven since years


which are field proven since years.


Mill 3 Roller MillMill 3-Roller-Mill

Extended Pedestal

3-, 4- and 6-roller arrangements

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- Module-Design-Concept -Module Design Concept

6-roller mill can be operated with only

Redundancy Concept (In-built redu

~60 % of normalnormal

capacity



4 rollers in case of mechanical defect

ndancy)

80 % f~80 % of normal

capacitycapacity

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- Coal Mill Properties -Coal Mill Properties

Typical Characteristics / Standard design

Pressure shock resistant up to 3.5 bar abs.Stop buffers ensure no metal contact betweStop buffers ensure no metal contact betweIndividual guidance of grinding rollers2, 3, 4 or 6 roller design (dependent on throFlat grinding table with conical rollers arrangHydropneumatic spring systemNo torq e introd ction in mill ho singNo torque introduction in mill housingForce guiding elements outside the housing

Special Characteristics

Increased pressure shock resistant up to 8 bp pCounter pressure unit (Turn-down ratio coulSpeed controlled mill drive



en roller and tableen roller and table

ughput)ged under 15° => shear forces

g

bar abs.d be extended down to 20%)

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- Economy of Scale -Economy of Scale

Gasifier 1Gasifier 1

CMD 1

50 %

CMD 2

50 %

CMD 3

50 %50 % 50 % 50 %

StandardStandard




CMD 4

50 %

CMD 5

50 %

CMD 6

50 %

sol tion!

50 % 50 % 50 %

solution!

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CMD 1

100 %

CM

100100 % 100

LOESCHELOESCHE




D 2

0 %

CMD 3

100 %0 % 100 %

E sol tion!E solution!

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6 x LM 35 3 D


6 x LM 35.3 D


3 x LM 53 6 D

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3 x LM 53.6 D



Top Vie

Footprint 6 x LM 35.3 D



ew


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Side V




View

F t i t 3 LM 53 6 D5-Nov-10 17




Ad

Indpn

On

Le

Leavav



dvantages

dependent from gasifiers location dueneumatic conveying system

ne single CMD unit can feed one gasif

ess installed area

ess investment costs with better vailabilityvailability

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Grinding Plant - Total Installed Cost *Grinding Plant - Total Installed Cost

Mill capacity for 100 % gasifier feedMill capacity for 100 % gasifier feed

Invest. costs CMD-grinding plant in total

S i **Savings **

* based on European equipment and installation


** independent from mill size


Two mills One millTwo millswith 3- or 4-rollers

One millwith 6-rollers

2 x 50 % = 100 % 100 %2 x 50 % = 100 % 100 %

100 % ~ 70 %

30 %~ 30 %

costs

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- References -References

n 1990 LOESCHEsupplied its first coal dry grinding plant fordry-grinding plant for an IGCC power plantn Buggenum.gg

Some Figures:

3 x LM 26.3 D10-20 % R 0,09 mm50 t/h each line with50 t/h each line with< 1,0 % H2OHGG fired with SynthesisGG ed Sy es sGas



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- Conclusion -Conclusion

Wide range of feed materialsWide range of feed materials

Low wear rates

Experience in Coal Gasification

References of LOESCHE Mills all o

Tailored Grinding Technology

Low Maintenance intervals for High

Continuing Development of the LOE



over the World for similar applications

h Availability

ESCHE Mills Economy of Scale

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Thank you forQuesty


LM 21.2 D, Dillingen, Germany


r your attentiontions?y

5-Nov-10 22

Reduction of CAPEX in Coal Milling andD id Drying · PDF fileLOESCHE 3-roller coal mill...

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