Solid Fuel Firing Systems and Components

Mitsubishi Hitachi Power Systems Europe

From Coal to Electricity

d

b

f c

e a

Generation of electricity in a typical coal power plant A Before being injected into the furnace, the raw coal is crushed down to a fine pulverized form in the coal mills. 2 Flue gases up to 1,450 °C arise from pulverized fuel combustion in the steam generator furnace. The liberated heat is used to generate high-pressure and high-temperature steam. 3 The steam is directed to a turbine; it flows onto the blade wheels and turns the turbine shaft. An attached generator then generates the electrical power.

Contents

4 With the help of catalysts, the nitrogen oxides in the flue gas react in the DeNOx system to produce nitrogen and water vapor.

Mitsubishi Hitachi Power Systems Europe

2

Selection Criteria

5

Furnace

6

Mill Feeders

8

Pulverizers

10

Pulverized Fuel Burners

14

Burn-Out Grate

20

Ash Removal Systems

21

Replacement Parts Service

23

5 Ash particles adhere to electrically-charged surfaces in the electrostatic precipitator; they are rapped and removed from the flue gas. 6 In the flue gas desulphurization system (FGD) lime slurry or suspended pulverized limestone bind the sulphur dioxide coming from the flue gas. The final product arising is gypsum.

Stronger together The merger of the “thermal power plant” fields of Mitsubishi Heavy Industries, Ltd., (MHI) and H ­ itachi, Ltd., has brought about Mitsubishi Hitachi Power Systems, Ltd., (MHPS) – one of the world’s largest companies in thermal power generation systems. An important mainstay of this corporate group is Mitsubishi Hitachi Power Systems Europe GmbH (MHPSE), the successor to Hitachi Power Europe GmbH. The energy plant con­ structor (based in Duisburg) looks back over a +100-year track record in planning and constructing fossil-fired power plants. MHPSE constructs turnkey plants, supplies key components (e. g. utility steam generators, environmental engineering equipment, turbines,

Stakeholders in Mitsubishi Hitachi Power Systems Europe GmbH

MHI

Hitachi, Ltd.

65%

35%

MHPS

100% MHPSE

burners, grinding systems) and handles service and rehabilitation.

SUBSIDIARIES AND RELATED COMPANIES

MH Power Systems Europe Service GmbH Service, rehabilitation and components in the industrial plant field Mitsubishi Hitachi Power Systems Africa (Pty) Ltd. Subsidiary of MHPSE in South Africa

Mitsubishi Hitachi Power Systems Europe GmbH

Meeraner Dampfkesselbau GmbH Manufacturing of premium components for utility steam generators (e. g. pressure parts) for power plants Donges Steel Tec GmbH One of Germany’s leading steel and bridge constructors; manufacturing of steel structures for power plants Babcock Fertigungszentrum GmbH Production of first-class components for power plants (e. g. coal mill), mainly for MHPSE

Coal Firing Systems

3

Firing Systems and Components

Ensuring Economic Efficiency, Conserving Resources As one of the global cutting-edge companies in power plant design and construction, Mitsubishi Hitachi Power Systems Europe provides highly advanced firing systems which can be used in their entirety or as single components for practically all fossil fuel qualities.

Project

Country

Kunde

MW

Fuel

Order obtained

Niederaußem

Germany

RWE Energie AG

1 x 1,012

Lignite

1995

Boxberg Q

Germany

VEAG

1 x 907

Lignite

1995

Elbistan B

Turkey

TEAS

4 x 360

Lignite

1998

Dezhou 5 / 6

China

CNTIC

2 x 660

Anthrazit

1998

Hamborn

Germany

RWE Energie AG

1 x 260

Blast Furnace Gas

1999

Iskenderun

Turkey

Siemens / STEAG

2 x 660

Hard Coal

2000

Neurath F & G

Germany

RWE Rheinbraun AG

2 x 1,100

Lignite

2003

Baosteel

China

Baoshan Iron & Steel Co. Ltd

1 x 350

Blast Furnace Gas, Coke Oven Gas, Heavy Fuel Oil

2005

Boxberg R

Germany

Vattenfall Europe

1 x 670

Lignite

2005

Walsum 10

Germany

Evonik

1 x 790

Hard Coal

2006

Moorburg A / B

Germany

Vattenfall Europe

2 x 820

Hard Coal

2006

Datteln

Germany

E.ON Kraftwerke

1 x 1,100

Hard Coal

2006

Gent

Belgium

Electrabel

1 x 300

Blast Furnace Gas

2006

Medupi

South Africa

Eskom

6 x 790

Hard Coal

2007

Maasvlakte

Netherlands

E.ON Kraftwerke

1 x 1,100

Hard Coal

2008

Wilhelmshaven

Germany

Electrabel

1 x 750

Hard Coal

2008

Kusile

Südafrika

Eskom

6 x 790

Hard Coal

2008

Rotterdam

South Africa

Electrabel

1 x 790

Hard Coal

2008

Maja

India

NTPC

2 x 660

Hard Coal

2012

Solapur

India

NTPC

2 x 660

Hard Coal

2012

Raghunathpur

India

NTPC

2 x 660

Hard Coal

2012

Kozienice

Poland

Enea

1 x 1,000

Hard Coal

2012

Selection of steam generator orders since 1995

MHPSE develops solutions, which are just as flexible as our customers’ requirements, for energy suppliers and industry alike. This can be seen most clearly from the large number of different types of references (see table) available. A high degree of operational efficiency and conservation of resources / environment is looked upon as an obligation and challenge by MHPSE in designing and manufacturing new utility steam generators. This also applies to the modernization and enhancement of existing power plants and their components, such as pulverizers and burners. It goes without saying that MHPSE as a certificated DIN ISO 9001 company always orientates itself to the best possible quality.

What Counts is the Choice The planning and design of firing systems is primarily dependent on the fuel used and must be individually tailored – something requiring above-average achievements on the part of our designers. Whilst there is no secret about up-to-date firing systems, one still needs considerable know-how and a long track record in plant concepts and specific sequences. Playing a prime role here are the fuel properties themselves, such as calorific value, moisture and ash content, volatiles and coal grindability. Advanced firing systems with a staged combustion sequence lower emissions and require substantial design and material selection outlay on the basis of the standards and legislation in force. This applies equally to the selection and construction of the firing components.

Tangential firing system Slag-tap firing system

Cyclone firing system U/double U firing system Front firing system

Hard coal Normal volatile coal Dry bottom ash firing system

Double front firing system Opposed firing system Corner firing system

Low volatile coal

Double front firing system Opposed firing system Direct firing system

Lignite

Dry bottom ash firing system

Direct firing system with vapor separation Direct firing system with vapor recycling

Biomass

Dry bottom ash firing system

Direct firing system Indirect firing system

Coal Firing Systems

5

Furnace

Pulverized Hard Coal Firing System The principal features are:

Fossil-fired power plants are currently enjoying a boom across the world. And hard coals,

■■ Uniform liberation of heat

in particular, can be widely used for energy transformation purposes.

■■ Low nitrogen oxide emissions coupled with practically a total fuel transformation ■■ Oxygen-rich flue gas atmosphere right next to the boiler tube walls

The decision to design a firing system with dry bottom ash removal or as a slag-tap furnace largely depends on the fuel properties themselves. Volatile matter, ash content and chemical ash composition have always been of decisive significance. The decision-making process was simplified with the launching of innovative DS® burners followed by tremendous combustion stability. Modern steam generators are usually designed today solely as dry ash discharging boiler plants at low cost and high efficiencies. This applies to practically the entire range of fuels irrespective of their effects from high volatile bituminous coal to anthracite. For many years now, the linear arrangement as front, double-front or opposed firing equip­ ment complete with vertically offset burner levels has proved to be the most suitable system for pulverized hard coal firing systems. The clear arrangement of mill and burner level ensures that the highly complex systems are clearly designed and arranged. This, in turn, creates a high degree of accessibility and ease of maintenance.

CAD model of the Datteln 4 utility steam generator ■■ 1 x 1,100 MWel / 1 x 2,939 t/h ■■ Benson® Steam generator ■■ Hard coal ■■ Steam parameters: Superheated steam: 600 °C / 305 bar; Reheater: 620 °C / 78 bar ■■ Entering into service: 2011 ■■ Scope of delivery: Utility steam generator including all the related components, engineering, installation and commissioning

Pulverized Lignite Firing System Combustion systems for lignite operated steam generators can be designed as direct systems for the use of raw lignite or as combined systems using raw and pre-dried lignite in the same furnace. Even with the usage of very high ash lignites, the new MHPSE lignite swirl burners (RS® burn­ ers) do not need any vapor separation. The excellent igniting stability of the RS® burners allows the burners to be arranged in a ­different way at the combustion chamber – for instance in the form of an all-wall firing system. Such a system combines the benefits of linear firing equipment with those of a tangential firing system. The firing steps alone enable the 200 mg/m3 NOx standard to be undercut in RS® burners. As a result, there is no need for complex, multiple air-staging concepts for adherence to the NOx standards. The stable ignition of RS® burners produces a marked improvement in the percentage load operations of lignite firing systems. Even with problematical fuels, the excess stoichiometric operation of these burners has a positive effect on fouling and slagging and it optimally protects the evaporator tube walls from corrosive flue gas products. The future will see boiler plants mainly being planned for the use of dry pulverized lignite with interim storage.

CAD model of the Boxberg R utility steam generator ■■ 1 x 670 MWel / 1 x 1,710 t/h ■■ Benson® Steam generator ■■ Lignite ■■ Steam parameters: Superheated steam: 600 °C / 315 bar; Reheater: 610 °C / 72 bar ■■ Entering into service: 2010 / 2011 ■■ Scope of delivery: Utility steam generator including all the related components, engineering, installation and placing into service

Coal Firing Systems

7

Mill Feeders

Belt conveyor

Reliability even under Demanding Requirements Designed as coal bunker dischargers, the mill feeders supply the pulverizers with raw coal – evenly dosed and in keeping with boiler load requirements. Even under very demanding requirements, the Mitsubishi Hitachi Power Systems Europe designed mill feeders operate both reliably and safely. Experienced MHPSE staff establish the optimum feeder in keeping with the requested fuel quantity, design directives (including DIN EN 12952-9, NFPA 85 F) and customer require­ ments (for instance, volumetric and gravimetric metering). Other selection factors are the various bulk material properties, such as coal flow and erosion behavior. The belt speed is determined by the quantity conveyed. Purge air is supplied to the housing to stop condensate forming and, in turn, to stop corrosion.

In hard coal boiler units, belt conveyors are used to discharge the raw coal from the bunker. In lignite plants, drag-chain conveyors together with belt conveyors are used to discharge the raw coal from the bunker. Belt conveyor The belt conveyor with corrugated edge belt ensures high outputs, uniform bunker discharge and continuous mill charging – even under low conveying rates. This design permits volumet­ ric / gravimetric metering and quantities conveyed of up to 120 t/h. Conveyed material falling to the bottom of the feeder is transferred to the coal downcomer by the simultaneously running scraper chain.

Raw coal g

a d

A Bed depth limiter B Belt drive station b

c

h

C Belt tensioning station D Corrugated edge belt E Scraper chain F Lower belt supporting roller

e

G Bunker shut off gate

f

 Conveyor-type weigher (optional)

Drag-chain conveyor Drag­chain conveyors are meant for limited conveyed quantities of up to approx. 40 t/h – this can, in special cases, be raised to 70 t/h. The fuel is discharged opposite to the direction of conveying. The drag­chain conveyor principle allows both a compact design with minimum spacing between bunker discharge and conveyor dumping as well as a possible large spacing between material charging and dumping.

Raw coal

e a d

b

c

A Bed depth limiter B Belt drive station C Tensioning station D Forged fork link chain E Bunker shut off gate

Coal Firing Systems

9

Pulverizers

Excellent Results In the mills, the raw coal is simultaneously pulverized, dried and evenly distributed to the coal burners. Hot air or flue gases transfer the pulverized fuel to the burner and reduce the moisture in the coal. MPS® Mill

­MPS® Bowl & Roller Mill The MPS® bowl & roller mill from Mitsubishi Hitachi Power Systems Europe grinds and dries hard coals and difficult-to-grind lignite with a low moisture content to pulverized fuel and distributes them evenly directly to the burners. Various-sized mills for throughputs ranging from 10 t/h to 200 t/h can be supplied. Constant refinements and impro­vements have led to excellent crushing results with high fineness grades from raw coal found throughout the world. The positive operating a b

properties and low energy requirements have contribu­ted in no small measure to the success of these mills.

c e g

f d

A Rotary classifier

E Grinding table

B Classifier drive

F Gear

C Grinding rollers

G Motor

D Hydro-pneumatic system

Long Service Life

RKD Mill

RKD Tube Ball Mill The Mitsubishi Hitachi Power Systems Europe RKD tube ball mill grinds and dries difficult-topulverize hard coals (particularly low-volatile coals such as lean coal and anthracite). This mill type can deal with approx. 150 t /h of coal. Depending on size and space, the tube ball mill can be designed with drum or neck bearing and be of the single or double pass type.

a

b

g d

e

A Rotary classifier f

B Oversize return C Neck bearing D Drive gear rim E Grinding ball filling F Feed spiral conveyor

c

G Classifier riser

Coal Firing Systems

11

Pulverizers

Low Energy Requirements Pulverizing lignite is particularly challenging in view of its high moisture content and the considerable throughputs involved. Here again Mitsubishi Hitachi Power Systems Europe has the right products in this segment. DGS® Mill

DGS® Integral Fan Distributor and Beater Mill MHPSE supplies DGS® mills of various sizes up to a 180 t/h throughput for drying and pulver­ izing raw lignite and brown coals with a high moisture content. DGS® technology involves the raw coal and flue gases being initially put through the precrushing beater section of the beater wheel. This ensures excellent air and coal dust distribu­ ­ sually so tion into the beater wheel. Crushing in the DGS® mill is u intensive that adequate grinding fineness can be obtained in one working operation – without the need of an additional classifier.

a

This both raises the pressure balance and cuts back on energy

c

requirements. The DGS® mill has stood the test of time par­ f g b

ticularly with difficult-to-work lignites – something that explains its considerable lifetime and unrivalled properties.

g d

e

A Flue gas gate valve

E Coupling

B Inlet housing

F Motor

C Beater shaft

G Bearing

D Beater wheel

Easy Maintenance

NV Mill

NV Wet Coal Fan Mill The NV mills ranging from 10 t/h to 140 t/h throu­ghputs are for crushing high moisture ­content lignites for direct injection into the furnace. Together with the flue gases, the raw lignite is brought for crushing purposes into the beater wheel. It acts as a fan impeller fitted with beater plates. Baffle-type classifiers ensure that the required fuel fineness for combustion is fulfilled. e

The high-tech NV mill more than meets the ongoing demands

a

worldwide of operational availability and low costs. f g

b

d c

A Gate valve housing

E Baffle-type classifier

B Grinding chamber door

F Double bearing

C Grinding chamber

G Motor

D Beater wheel

Coal Firing Systems

13

Pulverized Fuel Burners

Optimum Combustion How do you lower NOx emissions and at the same time control as many different fuels as possible? Questions like these are today determining the concept of pulverized fuel firing systems and burners.

DS® Burners 300

1,667 1,697 1,607 1,487

260

250 200 144 859 879 787

150 120

100 50 0

9 1

1,031 959

46 263 175 9 129 0

383

1,200

184

1,000 138

800

120 80

72

1,600 1,400

120 643 88

8 8

1,303 1,165 1,095 1,119 1,135

1,800

600 72

64 24

20 0

0

400

60 16

30

30

0

1991 1993 1995 1997 1999 2001 2003 2005 2007 2009 2011 2013 2015

200 0

n Total number n Year of commissioning

DS® burners were introduced early in the 1990s and continuously developed over the years. The burner’s principle is focused on fuel treatment to prepare the particles for the pyrolysis and ignition process that follows. The characteristic features of this burner type are expressed by the definition of initiation and course of ignition.

Ignition = Pyrolysis + Oxidation This type of burner with a concentric design and swirled flow streams in all sections, has its field of application mostly in direct firing systems using all kinds of pulverized fuels. The DS® burner concept utilizes operating experience from more than 1,100 applications.

Pulverized Fuel

Core Air Igniter

Secondary Air Tertiary Air

Adjustable Swirlers

Fuel Nozzle

DS® burners with an operating range of 1: 3,5 are available for direct operated combustion systems in a range of thermal capacities from 20 to 100 MW.

Fuels

Burner Classes (MW thermal capacity) 20

40

60

Lignite*

x

x

x

Sub-bituminous coal

x

x

x

x

Bituminous coal

x

x

x

x

x

Anthracite

x

x

x

x

x

x

x

Biomass (co-firing with coal) Biomass (standalone)

x

80

100

x

* Pulverizer operation on air basis

DS® burner design for a windbox arrangement

Basically developed for bituminous coal, these burners are applicable now for all carbon containing solid fuels like anthracite, sub-bituminous coal, lignite and biomass of different structures. The DS® burner is suitable for applications with individual air control as well as for the use in common windboxes.

Coal Firing Systems

15

Pulverized Fuel Burners

DST Burner The DST burner has been developed on the basis of the DS® burner concept for use in indirect firing systems.

Core Gas

Secondary Gas Tertiary Gas Pulverized Fuel

Swirler

Fuel Nozzle

Oil Lance

This burner type is the right one for pre­dried pulverized fuels like anthracite, bituminous and sub­bituminous coal, lignite, peat, biomass of various types as well as further carbon­con­ taining pulverized fuels separately or in any combination. Dust loading can range from 0.5 up to 15 kg fuel / kg medium. DST burners can be used for atmospheric operation or in pressurized systems with air and / or oxyfuel atmosphere. Air, inert gas and flue gas with or without oxygen enrichment can be used as the transport medium for the fuel. DST burners can be operated with a turndown rate up to 1:17. As a result a boiler can be operated from lowest start­up load up to full load conditions with an unlimited load response rate. Due to an extremely high PF / PA ratio the NOx emission rate is rapidly reduced. DST burners are available for thermal capacities from 20 to 60 MW for all kinds of pre­dried pulverized fuels used in indirect firing systems.

Fuels (pre-dried & pulverized)

Burner Classes (MW thermal capacity) 20

40

60

Lignite

x

x

x

Sub­bituminous coal

x

x

x

Bituminous coal

x

x

x

Anthracite

x

x

x

Biomass (standalone)

x

x

x

DS® burner direct (left) DST burner indirect (right)

Comparison of both burner systems

5

Coal / PA Ratio [kg/kg]

4

Burner control range (as tested)

3

Indirect firing system, DST burner

2

Indirect firing system, DST burner

1

Direct firing system, DS® burner minimum load range

0 0

5

10

15

20

25

30

35

40

45

Burner capacity [MW]

Energy storage and plant flexibility are the main challenges of power generation in the future. With the DST burner control range of 1:17 coal firing systems will be best prepared to meet the resulting operating demands.

Coal Firing Systems

17

Pulverized Fuel Burners

DST Burner Combined firing system

M

M

100 % M

M

M

M

M

M 20

M

M 40

M

M

75 %

M

M

M

M 30

50 %

M 10

M

M

M

M

M M

25 % Flexible Load Range

0 %

Flexibility is what is demanded of power generation now and in the future. With development of the DST burner, flexible concepts using indirect firing systems are now becoming the focus of interest. This system offers lots of advantages like: ■■ Turn down of investment and operating costs ■■ Independency of mill and boiler operation ■■ Wide load range with all burners in service ■■ Quick response in case of high load change demand ■■ Boiler operation without supplementary fuel (oil / gas) – even for start-up ■■ Exact definition of burner air ratios that enable boiler excess air below 10 % The combined firing system using the advantages of the direct and indirect systems is the consequential answer to the fascinating questions surrounding coal fired power plants in facing the challenges of the future.

RS® Burner RS® Burners 70

160

Orders since 1994

142

60

140 124 124

50

120

48 100

100

100

100 100

100 100

100

40 76

76

80

64

30

24

60

24 18

20 10

4 4

10 6

4 0

10 0

16 6

20 0

0 1994

1996

1998

40

12

16

2000

0

0

2002

2004

0

0

0

2006

0

2008

0

0

2010

0 2012

n Total number n Year of commissioning

The extensive findings acquired from developing DS® burner technology (flame stability, igni­ tion as well as air staging in the burner proximate zone) are also available for lignite firing technology purposes. What has been developed is the lignite RS® burner. In contrast to the conventional jet burner, the RS® burner permits control of the fuel / air mixture and flame propagation in the burner proximate zone.

Radiant Shielding Pipe

Secondary Air

Pulverized Fuel

Cooling Air Coal Dust Secondary Air Deflecting Cone

Coal Firing Systems

19

Burn­Out Grate

High Efficiencies In lignite coal or peat-fired plants with a high proportion of xylitol or fibers in the fuel, the proportion of unburnt residue in the boiler hopper ash can be extremely high and this impairs firing efficiency.

Burn-out grate diagram a

Ash



b

c

f d

A Boiler furnace hopper B Refractory jacket of retarded combustion reactor C Water seal gasket

e

g

D Firmly fixed grate supporting bars E Grate carriage F Grate surface G Hydraulic system for grate carriage and deashing flap  Ash hopper

i h

k 

 Cooling and combustion air J Deashing flap

j

K Ash discharge chute  Shutoff gate valve in ash discharge chute  Deasher



 Monitoring system

The optimum designed burn­out grate ensures that the ash burnout in the boiler hopper is improved to over 80 % – thus substantially raising the overall efficiency of the boiler plant. In addition, afterburning results in additional heat input into the boiler hopper, which would otherwise be relatively cold. This leads to an even distribution of temperature in the furnace.

Ash Removal

Stable in the Extreme and Long Lasting ­­­Ash removal systems have been part of MHPSE’s range of production and supplies for many years now. This applies to bottom ash removal as well as to the transfer of ash accumulating in the course of air heater and electrostatic precipitator ash removal.

Submerged scraper conveyor

Submerged scraper conveyor functions: ■■ Air sealing to the boiler hopper ■■ Ash cooling ■■ Ash conveying ■■ Inlet for furnace inspection

Submerged scraper conveyor for hard coal-fired systems e

c

b

a

i f

h

1 Bottom ash k

g

j

k d

k

g

2 Transfer chute with immersion piece 3 Expansion joint

Submerged scraper conveyor for lignite-fired systems

e

4 Submerged scraper conveyor 5 Drive station frequency controlled

c

i

6 Tensioning station

a

7 Idler stations h

8 Discharge chute 9 Cooling water inlet J Overflow K Travelling rails

f

k

g

j

k

d k

g

k

➞ ➞

Conveying direction

Coal Firing Systems

21

Other Ash Removal Systems

MHPSE provides a broad range of ash handling systems. These systems apply to ash handling for furnace bottom ash removal and also to the ash removal from all downstream ash accumulation points. Our systems offer a lot of benefits: they are stable in the extreme, wear parts are long lasting and both the energy requirements and operating / upkeep costs are low. MHPSE provides the entire range for utility steam generators with pulverized hard coal and lignite firing: from design, manufacturing and erection up to commissioning the complete ash disposal systems including loading systems for transport by truck, rail and ship.

Ash Removal Components

Our Other Ash Removal Systems

■■ Ash silos and dewatering bunker

■■ Dry mechanical ash removal systems

■■ Single-strand chain conveyors

■■ Hydraulic ash removal systems

■■ Apron conveyor

■■ Pneumatic ash removal systems

■■ Screw conveyors

■■ Mill reject systems

■■ Single and double roller crushers

■■ Re-cooling systems for submerged

■■ Hammer crushers ■■ Rotary feeders ■■ Single and double pendulum flap ■■ Shut off gates ■■ Ejectors ■■ Bucket-type conveyors ■■ Sluice ways

conveyor overflow water

Replacement Parts Service

As a designer and manufacturer of original components, MHPSE is the ideal partner to contact when modernization or replacement parts are needed.

Our extensive expertise derived from designing and delivering utility steam generators with the associated components over many years enables our MHPSE experts to provide professional solutions matched to customer requirements in the matter of plant design and operations. Optimized plants ensure that performance and availability are raised and that efficient operations are attained as far as possible. As a competent and flexible partner, MHPSE’ expertise is available in the fields of process engineering, plant optimization, measur­ ing technology, plant­internal inspection, component installation and commissioning. At the same time, MHPSE supports customers in the design and configuration of their future plants – from the technical point of view (planning, design, optimizing) and in the matter of operating economy analyses.

Rapid Servic e from a Competent Partner

Feeders conveyor

Coal Mills

Burners

Ash submerged scraper conveyor

Belts

Wear parts

Pulverized fuel line elbows

Chains

Chains

Linings

Pulverized fuel lines

Scraper bars

Drives

Nozzle rings

Impact plates

Wear plates

Bearings

Shaft seals

Housings

Drives

Gate valves

Feeding screw conveyors

Adjusting mechanisms

Conveyor­type weighers

Beater sections

Bearings

Expansion joints

Gear units

Manufacturi ng from a single sour ce

As stakeholde r in Babcock Ferti­ gungszentrum GmbH in Obe rhau­ sen, we are in the closest po ssible contact with our partners and, as such, are fl ex ible and quic k in handling your enquiries and can provide you w ith dependab le so­ lutions. More on this under: www.bfz-ob. de

Drives

Service Hotline: +49 2065 4221­960 Service Fax:

+49 2065 4221­997

Email: [email protected]

Coal Firing Systems

23

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MITSUBISHI HITACHI POWER SYSTEMS EUROPE GMBH Schifferstraße 80, 47059 Duisburg, Germany Phone +49 203 8038-0, Fax +49 203 8038-1809 [email protected], www.eu.mhps.com