Industrial Fan Applications

7/30/2019 Industrial Fan Applications

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Industrial Fan Applications


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DE-DUSTING

How are the fans used inthe process ?

De-dusting is the most diverse market for

industrial

centrifugal fans:

from small fume exhaust installations to heavy

duty applications using high kW motors, de-

dusting requires the broadest variety of fan

types.

Functioning principles:1) The system can work as a pressure-type

system, (See Fig 1) with dust or particles movingthrough the fan (typical of wood industries /

workshops).

2) The system can work as a depression-type

system, where particles are eliminated either

through a simple kiln where the fan is often

directly mounted on top of the cyclone (See Fig

2), or through a more complex system with

compartments inside the filter, relayed by the

introduction of air to eliminate airborne particles

(see Fig 3).


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DE-DUSTING

What are the technical

characterises of the fan ?

In pressure-type systems, like in the wood industry,

as all particles travel directly through the fan, the

impeller must be equipped with radial blades (T-type

Blades), and very often mounted without any shroud,

to avoid particles becoming attached within the fan.

Robustness of the fan and material thickness are

important elements of fan design.

Fans located after the cyclone and/or within filtering

systems, can have backward inclined, airfoil or flat

blades due to the clean air environment.

The most important characteristics of the fan are low

noise levels and high efficiency so users get the best

performance from the installation, avoiding the use

of silencers or acoustic insulation.

Our offer:Centrifugal fans in a variety of arrangements:

Arrangement 5 (direct drive with flanged motors).

Arrangement 4 (direct drive with foot motors).

Arrangement 1 (belt drive). Arrangement 8 (coupling drive).


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PAINT BOOTHS

How are the fans used in

the process ?

Fans installed in painting applications can

vary depending on their location within the

process:A) For air supply in the spray booth cabins,

double inlet centrifugal fans are used.

B) Single inlet fans with a special anti-

adhesive coating are used for dirty air

extraction.

C) Re-circulating fans (called plug types) are

installed in ovens to keep an even

temperature inside.

These last 2 types must have a dismountable

casing design, with easily accessible

impellers to enable cleaning.

For drying and cooling,two alternative solutions

are considered:1)double inlet centrifugal fans equipped with

frequency inverters.

2) large axial flow fans with adjustable-pitch-

in-motion impellers.

Our offer:Belt driven Centripal EU with accessible impeller for cleaning.

Centripal EU double inlet for drying and cooling.

Centrimaster GT for fresh air introduction via air supply plenums.

Europal for incinerators such as e-dip baths.

Axicos (axial fans with adjustable-pitch-in-motion) that deliver

variable flows in the cooling systems.


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GLASS INDUSTRY

How are the fans used in theprocess ?

Fans installed throughout the process are usually of a

centrifugal type. At the start of the process, a large centrifugal

fan is used to cool the oven walls.

A high pressure fan is installed to introduce fresh air inside

the oven to allow for correct combustion. The following fan

is a high temperature type (400 to 500C), exhausting hot

gasses from the oven. Inside the oven itself, some re-

circulating fans are often used to maintain a homogenous

temperature.

Following the oven, depending onglass type, either:

Glass is slowly cooled directly after the oven through

medium pressure / high volume centrifugals (windows, flat

glass), or through high pressure types in the case of the car

glass industries for example.

Glass flows from the ovens to be distributed in different

moulds, such as in bottle production.

In this case, boilers are installed along the process to maintain

liquid glass at the right temperature. Fans provide fresh air

to the boilers and are called conveyors. The final fans

installed in this system are high pressure blowers for mould

cooling. A flat aerodynamic curve is needed to keep thesame pressure on the different moulds, whatever the number

of moulds installed or which are functioning at the same time.

Our offer:Fans are of a quite heavy duty type, and have to be robust,

efficient and reliable. A complete range of motor powers is

also necessary up to a few hundred kWs.

Direct, belt and coupling drive arrangement are needed

because of temperature, mechanical life time and cycle

conditions.

Centripal EU, Europal and Technopal fans are all used for

this application.


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CHEMICALSPETROCHEMICALS


Fans used in chemical or petrochemical applications are

usually of a heavy duty type. Often of stainless steel

construction, the fans are used to exhaust corrosive, high

temperature or hazardous gasses from the process.

Fans located within such environments must now be

compliant with the ATEX norm and constructed to ensure

optimum safety. Fans can be classified for use in zone 1 or

zone 2, with motors ranging from EexNa range to Eexd II

CT6, and constructed with an anti-spark design, combining

the right material pairings in compliance with ATEX

requirements in terms of safety.

Our offer:

Flakt Woods offers a complete range of ATEX compliant fans,

and is one of the pioneers of this application, being integral

to the development of this new standard.

Fans must be highly reliable and efficient, often of a high

pressure type, capable of withstanding high corrosion

environments, often to following API norms outside Europe

for petroleum companies.

Special shaft seals, special materials, tailor made executions

characterise the design of these fans.

Centripal EU , Europal , Single or Two Stage Technopal fans

are suitable for these applications. JM Aerofoils are often

used in less harsh environments.


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AGRICULTURE &SILOS

What are the fansmade for in theprocess ?

Fans for agriculture tend be of axial type

for the ventilation of livestock buildings to

maintain the livelihood of pigs and poultry,

through the provision of fresh air and

removal of harmful contaminated air.

For grain drying, light centrifugal fans are

common, mostly of a double inlet type in a

non-welded execution, or two-stage axial

flow fans are used.

In silo applications, medium pressure / high

volume centrifugal fans are needed. Fansare of a fully welded design, and must be

compliant with the new ATEX regulations.

As these fans are now considered as being

located in a hazardous environment, their

construction must follow ATEX Norm for the

dust environment and depend on the

location of the fan, Zone 21 or Zone 22,

and whether the fan is in an extracting or

blowing mode.

Our offer:

2100 series for building ventilation.

JM axial flow fans single stage or double

stage for grain drying or for larger building

ventilation.

GT centrifugal fans in a non ATEX grain

drying.

JM and Centripal EU for ATEX version.


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BOILERS AND OVENS


Fans for industrial boilers are used to introduce fresh air into

the boiler in order to allow the proper maintenance of oxygen

levels necessary for the gas combustion.

Inlet guide vanes are used to regulate intensity and pressure,

depending on the required temperature. Fan curves have to

be of an anti-stall type.

These industrial boilers are dedicated to oven applications,

for glass or metal industries. Inside the oven, re-circulating

fans are used to maintain uniform temperatures. Large

centrifugal fans are also used for cooling oven wall cooling,

allowing a longer lifetime.

Our offer:

Flkt Woods has a complete range of high pressure direct

driven centrifugal fans in the EU range. The main advantage

over the competition is the ability to provide a direct driven

solution up to 1400 mm diameter.

Due to our vast experience in ovens, and special materials

and alloys, we are able to provide customers with solutions

up to 800C continuous in re-circulating fans.


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TEXTILE

What are the fans made forin the process ?

Fans for agriculture tend be of axial type for the

ventilation of livestock buildings to maintain the

livelihood of pigs and poultry, through the provision of

fresh air and removal of harmful contaminated air.

For grain drying, light centrifugal fans are common,

mostly of a double inlet type in a non-welded execution,

or two-stage axial flow fans are used.

In silo applications, medium pressure / high volume

centrifugal fans are needed. Fans are of a fully welded

design, and must be compliant with the new ATEX

regulations.

As these fans are now considered as being located in

a hazardous environment, their construction must

follow ATEX Norm for the dust environment and depend

on the location of the fan, Zone 21 or Zone 22, and

whether the fan is in an extracting or blowing mode.

Our offer:

2100 series for building ventilation.

JM axial flow fans single stage or double stage for grain

drying or for larger building ventilation.

GT centrifugal fans in a non ATEX grain drying.

JM and Centripal EU for ATEX version.


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WOOD and PAPER


Wood transformation to create Pulp and Paper industry is a

tough environment requiring reliable and efficient

performance.

Fans for wood industries can be of axial types to dry wood

before its transformation, or of centrifugal type, and used as

de-dusters in the transformation process.

For the paper industry, paper is continuously running on rolls

at a speed which depends on quality and type of paper

produced.

Fans in this process are used todry the paper along the process:

either exhausting air, creating a depression under paper

paste (i.e high pressure fans (8000 to 10000 Pa), with a

stainless steel construction.

or paper paste is going through an oven and standard

construction fans of medium pressure and 160C continuous

and are used for air circulation to evacuate calories.

Our offer :

Wood industry:

JM axial flow fans range in stainless steel or galvanisedversion.

Centripal EU equipped with T blades for de-dusting matters

during wood transformation process.

Paper industry:

Centripal EU medium and high pressure types, in stainless

steel or mild steel versions for paper drying.


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INCINERATION PLANTS

How are the fans used inthe process?

Primary fans are used, just like for industrial boilers,

for the provision and maintenance of air necessary for

the correct combustion of the incinerators. They are of

a high pressure type , up to 30 000 Pa.

Fans are also used as:

ID fans.

primary air fans.

secondary air fans.

exhausters of high temperature type, up to 350 C.

Our offer:

Flkt Woods offers a complete range of heavy dutyfans, from Europal to Technopal fans, depending on

duty requested, from 800 to 5000 mm impeller diameter,

capable to withstand temperature and tough working

conditions.


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MICRO-CHIPS


Fans for micro chips are used along the process as

exhausters. Production of the micro-chips is very corrosive,

and gasses have to be treated before being rejected in the

air, through very complicated filtering systems.

Centrifugal fans in special stainless steel and Allard coating

are used as:

Hot gasses exhausters.

Acid gas exhausters.

Ammoniac exhausters.

Solvents exhausters.

All those fans have to be equipped with inlet guide vanes

for production capacity regulation.

Otherwise, for fresh air introduction in the building, large axial

flow fans with adjustable-pitch-in-motion impellers are used

to follow production rhythm, without stopping the fan.

Our offer:

Flkt Woods offers a complete range of centrifugal fans, from

Centripal EU and Europal range, stainless steel versions or

with special coating, and Axicos as axial flow fans range

with adjustable pitch in motion impellers.


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FOOD INDUSTRY

How are the fans used inthe process?

Fans in food industry can be of both axial and

centrifugal type. Depending on their location and their

role inside the process, low, medium or high pressure

types can be requested.

As they are in a food environment, the material of the

fan tends to be either in a stainless steel construction,

or in aluminium. Certain epoxy coatings can be also

suitable in some processes.

In the food processing industry, fans are usually needed

for drying (blowers) or exhausting the water content

from the raw food. For example in pasta or milk-powderproduction, hot gasses have to be blown onto the food

in order to get

rid of all water content, which guarantees the food is

conserved before being packaged.

Our offer :

Stainless steel centrifugal and axial flow fans, part of

the JM and Centripal EU range. High efficiencies and

low noise levels are essential characteristics of fans

for this industry.


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HEAT TRANSFERSREFRIGERATIONCOOLERS


Flkt Woods offers a wide selection of innovative

products specifically designed for a variety of heat

transfer applications, ensuring OEMs and end users

obtain exact and independently certified performance

to suit their specific needs.

Through engineered solutions for applications such

as chillers, coolers, condensers, transformer cooling

and cooling towers for use in a variety of industries,

Flkt Woods has served the market for many years.

Fully integrated products developed for optimum

customer solutions, evolving and developingconstantly with changing customer requirements,

make us the leader in the field.

Wide expertise in market applications has been built

up through close working relationships with our

customers, enabling us to offer the highest

performance and efficiency coupled with lowest

installed sound levels ensure products meet market

expectations.

Our Offer :Compac Climafan; Aerofoil Climafan; 2100 Series Flkt

Woods offers a wide range of axial flow fans to satisfy

most heat transfer applications.

Our products are specifically designed to provide the

widest coverage of performance characteristics,

coupled with the lowest noise levels, ensuring that

most customer requirements are satisfied.


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MARINE & OFFSHORE

What are the fans madefor in the process ?

Fans in Marine and Offshore environments are used

to create ventilation and comfort in the cabins, and

for the machineries areas.

Fans located in those environments are operating in

tough conditions: salt and humidity are corrosive, and

continuously attacking materials. Moreover, as

maintenance is a critical point in terms of accessibility,

availability of spares and of technical people, design

of the fans must be thought to be first class quality in

terms of vibrations, sound levels and lifetime. This is

particularly true for fans located in submarines, where

each single movement / noise is creating turbulances

which can be seen on radars.

Fans can also be located in hazardous environments

e.g. in offshore platforms, and engineering companies

tend to ask for explosion proof technologies.

Stainless steel designs 304L, 316L are a must to face

these critical ambient conditions, and Eexd motors

are often requested.

Our offer:Flkt Woods has all the products needed, from a

complete HVAC system to a stainless steel JM axial

or EU centrifugal fan in stainless steel execution,

which can be equipped with inlet guide vanes

regulation.


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MACHINERYMANUFACTURERS - OEM"s


A lot of industrial machineries require fans for cooling,

blowing, exhausting: in essence they create the air

movement necessary for the proper machinery

functioning.

The OEM customer requests a particular duty point to

have the best output from his machinery. The role of

the fan manufacturer is then to take into account the

environment in which the customers machine is to be

used to determine the optimum proposition. After

prototyping, validation and qualification of the OEMmachine, the fan manufacturer then produces as many

fans as the OEM produces machines.

Field of applications is wide: producers of road

sweepers, power generators, heat exchangers,

building site machines, car wash, DC motors, windmills

generators, pasta machineries...

Our offer:

Tailor made or adapted axial flow fans , centrifugal

fans, mixed flow technologies, using latest

technologies of composite, aluminium, mild steel or

stainless steel materials, and bringing the best

efficiencies to our customer, to allow them making their

machine different on the market


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ROLLING STOCK


traction motor cooling (radiator).

braking resistor cooling.

transformer cooler blowers.

inverters / choppers blowers.

inductors cooling blowers.

condensors and evaporators fans.

Our offer:Fans located in Rolling Stock applications are

completely tailor made. Needs can be from axial

aerodynamic characteristics for transformer cooling, to

high pressure centrifugal for motor and braking resistor

cooling.

What differntiates Flakt Woods within the

market is:

the unrivalled experience in axial and mixed flow fan

technology, bringing the highest performance in

acoustics and aerodynamics.

the ability to integrate our products in customer

environments,

our capacity in tailored and innovative designs, like

our recent development of composite solutions to

eliminate fatigue and stress problems.

the ability to test the complete units in our laboratories.


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CEMENT


Fans play a major role in each step of

cement production:grinding of raw materials, rotary kilns, clinker cooler

Fans are located throughout the process:

raw mill fans.

exhaust fans or re-circulating fans in filtering systems.

kiln ID fans.

coal mill exhausters.

primary air fans.

clinker cooler fans.

With air flows from 50 000 to 600 000 m3/h, pressures

from up to 3000 to 20 000 Pa, and operating conditions

between 20 C and 500 C, fans for cement plants are

heavy duty types.

The increased capacity and complexity of plants have

resulted in more arduous conditions:

larger volumes.

higher pressures.

higher temperatures.

higher loads of abrasive dust.

Our offer:

Flkt Woods through Solyvent brand name has

unrivalled experience in TECHNOPAL fans for cement

applications, and has adapted its fan technology to

cope with these requirements:

highest efficiencies (more than 85 %).

gas flow / control regulation.

command of vibration and noise.

wear protection on highly efficient impeller design.

And an innovative concept called Hermit Crab

which consists in replacing the competitors impeller

with one of our impellers, keeping in place the casing.Challenge is to sell an increased capacity, a better

efficiency, or a longer life expectation.


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STEEL

How are the used in theprocess ?

Fans play a major role in each step of steel production:

grinding of raw materials, de-dusters, fans for the ovens,

fresh air introduction, burned gasses exhausters ...

Fans located in the process itself are usually submitted

to high mechanical constraints:

high temperature.

heavy dusty air extraction.

cycles : anti-fatigue designs.

corrosion.

For that, efficient cooling design for shaft and bearings

is necessary, use of refractory materials is mandatory,

and a technical innovation is a must.

Our offer:

Flkt Woods through Solyvent brand name has

unrivalled experience in TECHNOPAL fans for steel

applications, with continuous innovation through:

small deflector blades, positioned on the impeller cen-

tre hub, alter the dust particle trajectories, and increase

impeller life expectancy by 10 times.

use of ceramic, tungsten, special stainless steels

hastalloy, URANUS, rubber coatings ...

impeller water cleaning systems in running.

Others fans such as large

axial flow fans for air

introduction, or large

centrifugal exhausters for the

ovens are part of our range,

providing our customers with

a good global efficiency and

reliability.


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POWER PLANTS


Fans in Power plants process are of various types, but

their common point is their huge power consumption,

which can only be found in that type of application. The

volumes and air flows requested to allow the boilers,

precipitators, pre-heaters, coal mill and fluid beds to

continuously run require megawatts.

Fans in the process are:

Primary air fans.

Induced draught fans.

Forced draught fans.

Fluidization air blowers.

Mill seal air fans.

Our offer:

Some Technopal centrifugal fans in double inlet form

have been specially designed for power plant

applications, with impellers up to 4,5 meters and 10 M

Watts, it is possible to replace two or three competitor

fans with one large Flakt Wods unit.

With PF axial flow fan technology, Flkt Woods innovates

again in alimentation of fresh air for the boilers.

Highest efficiencies up to 92 % are allowing Flkt Woods

to sell an unrivalled premium design in Centrifugal and

Axial flow fans technology.

Building site ventilation and Turbine Halls are all equipped

with smaller axial flow fans from our standardized ranges.


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TUNNELS


Road Tunnels - removal of pollution and smoke.

Metro and Underground Railways removal of heat,

general ventilation and fire smoke control, including anti-

stall devices to accommodate pressure pulses.

Tunnel and Underground Construction - providing fresh

air and removal of pollution, heat and dust.

Our offer:

Flkt Woods range of AXIJET / Jetfans and AXICENT /

Large JM fans have provided solutions worldwide for:

Our offering for these projects can range from just

equipment supply to the provision of a complete sub-

system. A typical offering can include dampers,

attenuators, transformations sections, fans, anti-

vibration equipment and starters / inverters.

System optimisation is based on detailed knowledge of

the individual system components and the interactionbetween them.

Design calculations are also performed to confirm both

aerodynamic and acoustic performance.


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WIND TUNNELS/TESTING RIGS

How are the fans used ?

Fans for these specific applications are dedicated to aero

acoustic, climatic and aerodynamic testing.

Demanding industries usually want to check the resulting

Cx or behaviour of their machine in real conditions of

running:

car industries, which want to test the Cx of a car, to

judge how a new car design will operate if submitted to

lateral wind

planes manufacturers who want to test mock-ups or

real complete machines.

Our offer:

Special tailor made axial flow fans. Flkt Woods strength

is to provide customer with full proposal and a complete

unit which covers the demanded function. We can also

in our facilities develop and test the installation.


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WASTE WATER


Fans dedicated to waste water applications

are varied:

high pressure compressors for biological waste water

treatment which creae the oxygenation in the baths.

deodorization fans.

mud drying fans.

smaller pulsators.

A lot of those fans have to be able to withstand corrosive

and humid environments, thats why the use of Stainless

steel 316L and Ti is often a must.

Our offer:

Low operation cost compressors for biological waste

water treatment.

A combination of high-speed motor drive and high

performance carbon fibre composite impeller elevates

compressor technology to a new level.

High efficiency medium pressures / high volumes

centrifugals in Stainless steel for mud drying, and smaller

high pressure fans for pulsators, belonging to Centripal

EU product range.


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Sales Offices available World Wide -See our website for details

www.flaktwoods.com

Head offices

Building Air Climate Industry Air Movement

Flkt Woods AB Flkt Woods LimitedKung Hans vg 12 Tufnell Way SE-192 68 SOLLENTUNA Colchester, EssexSweden United KingdomTel: +46 8 626 49 00 Tel: +44 1206 544122Fax:+46 8 626 73 10 Fax:+44 1206 574434

Flkt Solyvent-Ventec143, rue de la Rpublique - B.P. 67

69882 Meyzieu Cedex France

t + 33 (0) 4 72 45 13 00 f + 33 (0) 4 72 45 13 42

w www.flaktwoods.com

Flkt Woods reserves its rights to modify the technical datas described

in the document anytime. Informations are not contractual. Should you

need any further information, please contact the local agent in your

country

Industrial Fan Applications

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