A World Leader in Boiler Technology

8/13/2019 A World Leader in Boiler Technology

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A World Leader in

Boiler Technology

Power


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Advanced Bo i ler Des igns

Schwarze Pumpe,Germany 2800 MWBrown Coal FiredSteam Generators.

Power So lu t ions for Enhanced Prof i tab i l ity

and a C leaner Env i ronment

Meeting Our Customers

Demands

Todays energy markets call for

advanced boiler designs that use

economical and environmentally

friendly technologies to achieve:

The lowest possible operating

costs

High availability and ease of

operation

The ability to burn a wide range

of fuels.

ALSTOM has the know-how and

technical expertise to supply

the power generation technologies

you need. Were an industry leader

with more than a century of world-

wide experience and we can

develop solutions to meet your

specific needs.

Progress Through Technology

With our extensive research and the

combined experience of our diverse

ALSTOM page 2


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ALSTOM page 3

global companies, no other

power industry supplier can match

the breadth of proven product

offerings and services supplied by

ALSTOMs utility boiler business.

ALSTOMs boiler technology is

installed in over 400,000 MW of

boilers around the world.

Customer Focus

Our goal is to bring value and satis-

faction to our clients through our

extensive technical capabilities,

our global experience and our

innovative product development

programs strongly backed up by

our Quality Focus Program.

In over 80 countries, ALSTOM has

built a reputation for on-time

completion of state-of-the-art boilerprojects that perform as promised.

Our commitment is to work with

you, our customer, to continue to

define and develop new boiler

solutions to meet your increasingly

challenging energy demands.


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A n I n n o v a t i v e H i s t o r y

o f P r o v i d i n g S o l u t i o n s

ALSTOM page 4

Over 100 Years of Exper ience

Boiler for City Auditorium Chattanooga,Tennessee

Provence, France FirstOperating 250 MW CFB

Stuttgart-Obertrkheim,Germany

Tangential Flame

1908

Our French boiler company (former

Stein Industrie) is created.

1912

Our US boiler company (former

Combustion Engineering) is

established.

1921Our German company (former

KSG/ EVT) is established.

1927

ALSTOM introduces tangential

firing, an innovation that provides

significant benefits in combustion

efficiency.

1942

Our first Controlled Circulation

steam generator is installed. This

positive circulation design has been

accepted as an industry standard

around the world.

1960

The highest temperature and pres-

sure supercritical boiler ever

designed is supplied by ALSTOM

at Philadelphia Electrics Eddystone

Station, USA.1992 1993

ALSTOM commissions supercritical

units in Denmark (Vestkraft 1400

MW) and the first two of twenty in

South Korea (Poryong 2500 MW).

1995

Commissioning of the first 250 MW

Circulating Fluidized Bed (CFB) in

the world the Provence station in

Gardanne, France designed byALSTOM.

1997

Schwarze Pumpe (Germany

2800 MW) begins operation.

Designed by ALSTOM, these

represent one of the largest scale-up

of brown coal fired supercritical

boilers to date.

1998 2000ALSTOM remains a market

leader of subcritical boilers in the

600 700 MW class with:

Commissioning of boilers for

Paiton (Indonesia 2670 MW

and 2717 MW) and Sual

(Philippines 2660 MW)

Orders for Manjung (Malaysia

3760 MW) and Ho-Ping

(China 2660 MW).


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Manjung, Malaysia 3760 MW PC

Guayama, Puerto Rico 2250 MW CFB

2001 2005

ALSTOM has the most advanced

once-through boiler design with

supercritical steam parameters.

State-of-the-art technology focuses

on high plant efficiency and

availability as well as reduced

emissions. ALSTOMs leading role

is underlined by the commissioning

of outstanding orders, including:

Niederaussem (Germany

1000 MW)

Mai Liao (Taiwan 2600 MW)

Yonghung (South Korea

2800 MW)

Waigaoqiao (China 2900 MW)

Patnow (Poland 1460 MW)

Circulating fluidized bed technology

continues as an environmentally

attractive alternative to conventional

pulverized-coal burning systems.

In this period, ALSTOM commis-

sions a record number of 250+

MW class CFB units, including the

Seward (USA), Sulcis (Sardinia),

Guayama (Puerto Rico), Red Hills

(USA) and E. Kentucky Power

Cooperative (USA) projects.

A Look into the Future

With our long history of providing

advancements in boiler technology,

ALSTOM has demonstrated

commitment to the power industry.

Customer demands for even higher

plant efficiency, availability and

operating flexibility as well as

reduced emissions are our

motivation to further improve boiler

designs. We look forward to

continuing to take the lead in

providing innovative, cost-effective

and environmentally-friendly

solutions to your power generation

requirements and to contributing to

a cleaner environment for all of us.

ALSTOM page 5

Niederaussem, Germany 1000 MW Brown Coal FiredSupercritical


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ALSTOM page 6

F i r s t i n F u e l S c i e n c e

properly incorporate the fuel firing

equipment into the boiler system.

Fuel Flexibility

ALSTOM can design, manufacture

and construct a power boiler for

essentially any fuel, from multiple

grades of coal, to oil and natural

gas, to heavy residues, to biomassand industrial wastes.

We have extensive design and

operating experience with boilers

burning the worlds range of coals,

including anthracite, bituminous,

subbituminous and lignite fuels,

as well as peat. We are an

acknowledged leader in the supply

of brown coal fired boilers with

over 25 GW of installed capacity.

Our expertise extends to other low-

quality fuels, including waste prod-

ucts such as petroleum coke and

paper mill by-products.

Fuel Preparation Pulverizers

Most solid fuels must be prepared

for combustion by being either

pulverized for suspension firing, orcrushed for fluidized bed firing.

We have experience in the design

of fuel preparation systems for

virtually any kind of solid fuel.

ALSTOM introduced the bowl mill

design to the industry and has

continued to advance these designs

with our latest series of HP

pulverizers. Our ball tube (double

ended or single inlet/outlet)

Understanding the Fuel

At ALSTOM, we believe our

knowledge of how to burn a

variety of fuels the art and

science of balancing a fuels

chemical and physical properties

to ensure it burns cleanly and

efficiently is a core competence.Choosing a fuel burning technology

suitable to a customers application

is a complex process. Economic

considerations incorporating

capital, operation and

maintenance, and fuel costs must

be taken into account.

In addition, efficiency, emissions

regulations and fuel characteristics

must be carefully analyzed to

Progressive Stages of Transformation of Vegetal Matter into Coal

Unmatched Fue l Exper t i se


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ALSTOM page 7

Advanced Physical Flow Modeling and Computer Modeling

designs are well suited for hard-to-

grind and erosive fuels, while our

beater wheel mills are ideally

suited for lignites and brown coal.

We offer milling capacities that

range from 15 to 200 tons per

hour per pulverizer to complement

boilers up to 1000 MW or more.

Firing Systems

ALSTOM provides a full range of

suspension firing and fluidized bed

technologies.

The selection of the optimum firing

system is related to the physical

and chemical characteristics of

the fuel, local environmental

regulations, and customer

operating preference.

With our range of firing system

technologies, ALSTOM can provide

you with an optimized solution for

your fuel and site requirements

whether you choose suspension or

fluidized bed firing.

Development for the Future

Our world class fuel scientists, in

cooperation with our boiler

designers, continue to advance our

knowledge of combustion science

and system design. With the

application of Computational Fluid

Dynamics (CFD) for furnace

modeling and other advanced

analytical methods, complex

combustion chemistry can be

understood for all fuels, leading to

designs with lower emissions as

well as efficient combustion.


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ALSTOM page 8

Fu l l Range o f Suspens ion F i r ing Sys tems

Tilting Tangential Firing

F i r i n g S y s t e m s C h o i c e s f o r R e l i a b l e ,

E f f i c i e n t C o m b u s t i o n

Suspension Firing Systems

ALSTOMs suspension firing systems

include tangential and W-flame

firing patterns in both direct- and

indirect-fired fashion.

In suspension firing, the residence

time of the fuel in the furnace is

relatively short and fuel particlesare not recirculated.

Tangential Firing

ALSTOM introduced tangential

firing systems to the industry. In

tangential firing, the unique rotating

flame envelope ensures thorough

mixing within the furnace,

providing complete combustion

and uniform heat distribution.

A feature specific to tangentially

fired boilers is the option to regu-

late furnace heat absorption (for

steam temperature control) by tilting

the fuel and air nozzle assemblies

up or down automatically.

Superheat and reheat temperatures

are thus controlled with minimal

heat rate impact.

Low NOx Firing Systems

Tangential firings even-burning

characteristics, lower peak flame

temperature and natural staging of

the fuel and air help minimize

NOx formation. With many regions

imposing increasingly more strict

NOx emission limitations, ALSTOM

has developed a family of low

NOx tangential and wall-fired

burner systems to meet specific

project emissions requirements.

These advanced low NOx burners

utilize various fuel nozzle designs

and arrangements, including single

or multiple over-fire air levels for

maximum flexibility.

Our low NOx firing systems

utilizing tangential firing maintain

stable low NOx combustion during


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ALSTOM page 9

Low NOx Tangential Firing

W-Shaped Vertical Pulverized-Coal Flame

RSFC Flame

high turndown (low load)

operation, minimizing the use

of costly support fuel.

Where additional NOx reduction

is required, ALSTOM can incorpo-

rate post-combustion techniques uti-

lizing either non-catalytic or catalyt-

ic reduction technologies. Our abili-ty to optimize control of NOx emis-

sions by both combustion modifica-

tion (firing system design) and post-

combustion techniques provides

cost-effective emission control.

Other Firing Systems

ALSTOM also has considerable

experience in the supply of other

fuel-specific firing systems,

including W-flame technology,

which efficiently burns anthracite

and other low volatile fuels.

Combining our double arch

furnace design with down-shotfiring burners results in a W-shaped

flame that provides sufficient

residence time for these low

volatile fuels.

For high moisture coals and

lignites, ALSTOM uses an

integrated milling and tangential

firing system. The tangential

firing system. The tangential

arrangement provides excellent

ignition and flame stability. For

drying the fuel, hot flue gases are

recirculated from the upper furnace

to the beater wheel mill. NOx con-

trol is achieved by air staging. For

lower ranks of lignite and for very

tight NOx requirements, areburning approach can be

provided.

ALSTOM is committed to

continuing the development of

firing systems that further reduce

emission levels while retaining

high levels of availability and

combustion efficiency.


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F lu id ized Bed Technology

Tamuin, Mexico 2130 MW CFB

F i r i n g S y s t e m s C h o i c e s f o r R e l i a b l e ,

E f f i c i e n t C o m b u s t i o n

ALSTOM page 10

nitrogen oxide (NOx) emissions

without the use of additional

pollution control equipment. In a

fluidized bed, fuel and sorbent are

fed into the furnace. The sorbent

typically a fine-grained limestone

reacts with the sulfur dioxide

released from burning the fuel toform a solid calcium sulfate. Spent

sorbent and ash are removed

through drains at the bottom of the

unit. Depending on the

characteristics of the fuel and

sorbent, SO2 capture levels in a

fluidized bed can range as high as

95% 98%. For extremely high

sulfur fuels or where local SO2emission limits require a higher

removal level, a polishing dry fluegas desulfurization system can be

added to achieve sulfur capture as

high as 98% or higher. These

polishing systems have the added

advantage of reducing limestone

consumption for high levels of sulfur

capture.

NOx Control

Fluidized bed boilers operate at

significantly lower temperatures(1550 1650 F/850 900

C). These lower combustion temper-

atures, combined with staging of

combustion air, result in NOx

emission levels from a fluidized

bed which often meet environmental

standards without further controls.

If necessary, post-combustion NOx

control such as Selective Non-

Catalytic Reduction (SNCR) can be

incorporated to further reduce NOx

emissions.

Fluidized Bed Technology

ALSTOMs fluidized bed designs

present an environmentally

attractive alternative to conventional

suspension fired boilers. In

fluidized bed combustion, fuel is

burned in a bed of hot,

non-combustible solids suspendedin an upward flow of air. Fuel

residence time is longer in a

fluidized bed than in suspension

firing, as unburned fuel is captured

and recirculated for further

combustion.

Environmentally Friendly

Designs

Sulfur Dioxide Control

One major advantage of fluidized

bed technology is the ability to

control sulfur dioxide (SO2) and


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ALSTOM page 11

Fuel Flexibility

No other fossil-fuel combustion

technology can match the degree

of fuel flexibility offered by

ALSTOM fluidized bed combustion

boilers. Because fluidized beds

operate below ash softening tem-

peratures, they are less sensitive to

fuel ash characteristics. In addition

to traditional utility fuels such as

coal and lignite, fluidized bed

technology is effective in burning

so-called opportunity fuels

including coal wastes, petroleum

coke, industry by-products and

biomass.

Range of Designs

Fuel and output requirements differ

with each application. Therefore,

we offer a portfolio of efficient and

proven fluidized bed designs to

meet your precise applications.

For small utility and process power

plants ranging in size from 10 to

about 40 MW, ALSTOM offers its

FI CIRC fluidized bed boiler

design. It provides high efficiencysulfur capture with relatively low

limestone usage.

For utility-scale applications 50

MW and above, we offer a family

of designs tailored to fuel and other

customer specifications.

The typical ALSTOM offering is a

circulating fluidized bed

open-furnace design for units up to

approximately 300 MW, with the

option of a pant-leg design for units

300 MW or larger.

In addition to efficiently burning a

range of fuels while achieving low

emission rates, ALSTOM fluidized

bed systems are designed to meet

your cycling and dispatchrequirements.

Berrenrath, Germany 280 MW CFBs

High Efficiency Cyclone


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NATURAL CIRCULATION

Superheater (SH)

Evaporator

Economizer

FeedwaterPump

SteamDrum

DownComer

FurnaceWaterWalls

CONTROLLED CIRCULATION

Evaporator

Economizer

FeedwaterPump

SteamDrum

DownComer

FurnaceWaterWalls

BWCP(Boiler WaterCirculation

Pump)

ONCE THROUGH

Evaporator

FeedwaterPump

SteamSeparator

Start UpCirculation

Pump

WaterWallTubes

IsolatingValve

SH Surface Saturated Fluid Sub-Cooled Fluid

Superheater (SH) Superheater (SH)

S t e a m G e n e r a t o r D e s i g n s f o r

E v e r y A p p l i c a t i o n

ALSTOM page 12

Controlled Circulation

Steam GeneratorTwo-Pass Configuration

Circulation Design Types

Bui l t - in F lex ib i l i ty for Enhanced E f f i c iency

furnace walls; hence, no steam

drum. The selection depends on

pressure, unit size, planned

operating mode and customer

preference.

For all steam circulation systems,

ALSTOM offers designs that can be

operated in constant pressure,partial sliding pressure, or full

sliding pressure modes.

Recirculated Systems

Natural Circulation

Natural, or thermal circulation,

boilers rely on the steam water

density difference to produce

circulation within the furnace walls.

Natural circulation is best suited for

CFBs of all sizes and for smallerconventional boilers, typically less

than 300 MW. For larger

conventional boilers with steam

drums, Controlled Circulation is

the superior technology.

Controlled Circulation

ALSTOMs Controlled Circulation

units incorporate pumps into the

furnace waterwall circuit. These

designs are particularly effective forhigher subcritical pressures where

less thermal circulation driving

force is available. Controlled

Circulation designs ensure

effective cooling within the furnace

walls under all operating

conditions, permitting the use of

smaller and thinner tubes. Design

benefits include rapid load

response, rapid maintenance

access and the ability to meet any

available turbine startup rate.

Full Range of Circulation Designs

With an established track record of

dependable cost-effective performance,

ALSTOM steam generator designs

allow todays power plants to operate

in base load or cycling modes, while

fulfilling the most difficult environmental

and efficiency standards.Circulation Systems

ALSTOM supplies both recirculated

and once-through furnace wall

circulation systems. Recirculated

systems utilize a steam drum to

separate steam from the heated

furnace wall fluid and allow water to

be returned to the furnace walls for

additional heating. In a once-through

design, there is no recirculation of

water within the unit. All water is

converted to steam prior to exiting the


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ALSTOM page 13

Straight Tube Wall vs. Spiral Tube Wall

Basic Principle of Spiral Wall Furnace

Supercritical Steam Generator Tower Configuration

Both natural and Controlled

Circulation units operate at

subcritical steam pressures.

Once-through Circulation

ALSTOM provides both subcritical

and supercritical once-through

boiler designs.

Supercritical steam cycles offer

significant advantages to todays

power plant owners. These higher

efficiency cycles translate into fuel

cost savings and lower emissions

per kWhr generated.

With the demand for more rapid

response to load changes, our

current supercritical units are being

designed to operate in sliding

pressure mode, which maximizesefficiencies at all loads. Other

advantages to sliding pressure

include lower average stresses on

pressure parts and the steam

turbine, thus increasing their life-

time; faster startup; load swing

capabilities; and improved range

of steam temperature control.

ALSTOM has supplied large

suspension fired, supercriticalboilers up to 1000+ MW. Our

extensive experience includes the

most advanced steam cycle

characteristics. In addition, we are

supporting new material R&D to

extend our designs to higher

pressures and temperatures.

For the ultimate in design flexibility,

ALSTOM offers both spiral wound

and vertical furnace arrangementsfor sliding pressure supercritical

applications.

Boiler Configuration

ALSTOM provides both tower

and two-pass configuration boiler

designs. In a tower design, all

upper furnace heating surfaces

are contained in a single vertical

configuration within the furnace

bounding walls. Two-pass is ashorter design, incorporating

heating surface in the radiant

section of the furnace and in a

parallel backpass. The selection of

boiler configuration is

project-specific, with consideration

given to fuel ash characteristics,

site restrictions and customer

preference.


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A G l o b a l O r g a n i z a t i o n P r o v i d i n g

I n t e g r a t e d S o l u t i o n s

ALSTOM page 14

A Global OrganizationProviding IntegratedSolutionsAs demand for energy continuesto grow, ALSTOM offers a globalorganization that combines interna-tional experience, proven engineeringleadership, and advanced boiler

technologies. Our energy solutionsare generating billions of kilowatthours each year throughout the world.

Our ongoing research anddevelopment efforts continue to focuson new state-of-the-art materials andsystems to help you reduce cost,increase boiler availability, boost yourplants economic performance andreduce environmental emissions. Wewant to improve your competitiveness!

Full-scope CapabilitiesALSTOM has full scope capabilities todesign, manufacture, install andcommission your boiler selectionthrough our international network ofmanufacturing facilities, licensees andjoint ventures. These are strategicallylocated to provide our customers with

products manufactured to ourexacting quality standards at thelowest cost and in the shortestpossible timeframe. ALSTOM designsand supplies complete boilerauxiliaries, including pulverizers, airheaters, ash systems and controlsystems, as well as a full complementof environmental control systems.

We stand behind the products wesupply with a service organization

skilled in boiler upgrades andmodifications. We offer component

retrofit, spare parts, full-scale boilerrehabilitation, and technical supportfor all our boiler systems, around theclock, wherever you are. From asingle component to a turnkey powerplant, ALSTOM solutions arecustom-designed around you.

Flexibility and ResponsibilityOur flexibility in steam generationknows no limits. Our global companystructure and processes enable us toact flexibly to market changes.

ALSTOM is also a responsiblecompany: towards society, theenvironment and our employees, whoare our greatest resource. We deliverour global expertise to our customers.Be assured: we can provide anappropriate solution for every specificneed ... because ALSTOM is your FullService Provider in power generation.

Electrostatic Precipitator

Ljungstrom Air Preheater

A Fu l l Serv ice Prov ider


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ALSTOMs Commitment to Quality

Our common goal is to integrate quality into all aspects of our business. Responsibility for system and product

quality, employee occupational health and safety plus environmental protection is not delegated. Each Power

Sector employee is accountable for continually improving upon the work that they do. Managers are responsible

for creating the environment where this can occur.

We define quality as always meeting our customers service, performance and technical expectations.

We measure quality in terms of customer satisfaction.

We commit to:

Continually improving our performance through rigorous analysis of customer feedback, rigorous analysis of

internal data and by implementing appropriate improvement and preventative actions.

Fulfilling our obligations to society and fostering an open dialogue with customers, our people, our suppliers

and the public.


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For further information, please contact our Marketing Department at:

e-mail: [email protected]

Phone: (01) (860) 285 9949 Fax: (01) (860) 285 5676

Or one of our lead center Sales Offices listed below:

ALSTOM Power Boilers ALSTOM Power Boilers ALSTOM Power Boilers

19/21, avenue Morane-Saulnier 2000 Day Hill Road Augsburger Strasse 712BP 74 78141 Vlizy, Cedex France Windsor, CT 06095 USA D-70329 Stuttgart, Germany

Tel: 33 (0)1 34 65 46 39 Tel: (01) (860) 285 9765 Tel: 49 (0) 711 917 1269

Fax: 33 (0)1 34 65 42 12 Fax: (01) (860) 285 9016 Fax: 49 (0) 711 917 1222

www.power.alstom.com

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A World Leader in Boiler Technology

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