sealing coal fired power industry slurries - a.r....

Copyright © 2007 AESSEAL plcL-UK/US-SLURRY-03

AESSEAL plc �+44 1709 369966 www.aesseal.com

Issue 3

Coal Fired Power Industry Slurries

Section 5 Contents 1

Section 1. A Guide to Slurries

Section 2. Sealing Off/Onshore Exploration Slurries

Section 3. Sealing Pulp & Paper Slurries

Section 4. Sealing Mining & Mineral Slurries

Section 5. Sealing Coal Fired Power Industry SlurriesAbsorbers, Flue Gas Desulphurization/ScrubbersLime & Coal Slurries, Ash

Section 6. Sealing Steel, Corn, Building Services, Plastics, Food and Waste Water Slurries

Sealing Coal Fired PowerIndustry Slurries



Issue 3


Section 5 Introduction2

IntroductionOver the forthcoming decades, it is speculated that many countries will hit a power crisis, whereby demandoutstrips supply. As gas prices soar, many countries are reviewing and in some cases like the UK, resurrecting, theuse of coal fired power stations to create power for forthcoming generations.

The diagram below shows the common processes of a coal fired power station.

Coal fired power stations typically burn hard coals; themajority being only bituminous coals, but there is someuse of anthracite. Hard coal originated in theCarboniferous period about 345 to 280 million yearsago, from vegetable matter (trees and ferns) which hasbeen compacted and heated by geological processes.

After processing, coal which is delivered to powerstations contains about 15% of alluvial silt by weightthat becomes ash after combustion.

In modern coal fired boilers, coal is burned by grindingit to the fineness (a similar powder consistency tocement) and then blowing it into the boiler furnace withair.

The coal particles burn within 3 to 4 seconds leavingspherical molten beads of ash. The ash particles thenstart to cool as they pass out of the furnace area withthe flue gas.

Coal

River

Boiler(furnace)

Steam

Turbine

TransmissionLines

Water Generator

Transformer

Condenser Cooling Water Condenser

Coal Fired Power Station Figure

The boiler is designed so that the ash particles arebelow their melting temperature as the gas leaves thefurnace. The ash becomes a solid bead transportedwith the combustion gases through the remainder ofthe boiler.

Finally, pulverized fuel ash (PFA) particles are capturedfrom the flue gas by electrostatic precipitators beforethe gas is allowed to pass to atmosphere. PFA is heldin hoppers beneath the precipitators. From here it canbe withdrawn as a dry product for direct use in cementor concrete, or it can be “conditioned” by mixing it withup to 18% water. In this slurry form it can be moreeasily transported to a variety of uses, or storedawaiting sale.

Needless to state, rotating equipment is employed inmany parts of a coal fired power plant, from agitatingand pumping ash slurries to primary fans and blowers.

Given the arduous environment in which the rotatingequipment operates, the need for quality sealing ofboth primary and secondary bearing chamber areas isof paramount importance.



Issue 3


Section 5 Non-Slurry Applications 3

AESSEAL® have been sealing all areas the Power Generation Industry since the 1980’s. Some non-slurry sealingexamples include:

Case Reference Examples

• 285mm (11.250”) split case river water pumps operating at ambient temperature, 375 rpm and sealed with single cartridge mechanical seals with Plan 13 installed in 1996

• 9.375” (238mm) vertical seal water circulating pumps operating at ambient temperature, 295 rpm andsealed with single split mechanical seals. Case Ref 3440.

• Main and standby Oil Turbine pumps operating at 33 psi (2.3 bar)sealed with single cartridge seals

• Distillate pumps operating at 5 bar (73 psi) at 2,960rpm

• Boiler feed water pumps operating at 180ºC (360ºF), 3,570 rpm and at 205 psi (8 bar) seal chamber pressure sealed with single mechanical seals in a Plan 23 cartridge arrangement

Non-Slurry Applications

River/Sea Water Circulating Pumps

Water is extracted from river by pumps and typicallydeposited in settling tanks to allow suspended solids todrop out. There after it is used for a number of dutieswith the power plant, including;

• It is pumped to the base of the cooling tower to make up for losses caused by evaporation.

• It is fed through condensers, cooling the Boiler Feedwater

• It is used for the on-site fire-fighting system on site

• It feeds the general water service system, which is used to cooling bearings, compressors and fans.

• It is also used to feed the Ash Crusher system

• It is also de-mineralised and used for boiler feed duty

AESSEAL® have decades of sealing the water and rivertransfer pumps, throughout the power plant, in allapplications.

285mm CURC’s installed on River Pumps

Boiler Feed/Circulation Pumps Turbine & Distillate Pumps

SMSS23™

SMSS23™ Cross-section



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Section 5 Non-Slurry Applications4

Non-Slurry Applications

• Liquid hot condensate pumps from the heater drains in the heat and power plant, operating at 180ºC (360ºF), 1,500rpm and at15 bar (218 psi) sealed with single mechanical seals in a Plan 23 cartridge arrangement.

• Condensate drain pumps operating at 80ºC (176ºF) and 1,480 rpmsealed with single cartridge seals.

• Eight LRCE pumps were sealed using 3.750” CURC™ single cartridge seals (AZA 1574) with an MTBF of 8-10 years.• Cooling tower gearboxes have been successfully sealed in coal

fired power stations in the USA, using MagTecta™ bearing seals.

• Coal crusher gearboxes have been successfully sealed in coal fired power stations in Ireland, using MagTecta™ bearing seals.Case Ref 3269.

• One 3.500” and two 4.250” CURC™ single cartridge seals(AZA8942 and AZA8941) installed on Nash Liquid Ring Vacuumpumps (WRAP pumps), used to evacuate the power stationcondensers and traditionally sealed with packing which leaks and impairs pump performance.

• Fourteen 75kw Flygt 3306.665 Drains Pumps upgrade with T05S upper and lower seals.

• Sixteen KSB submersible pumps with Oil Bath Contamination.

Condensate Pumps

Cooling Tower & Coal Crusher Gearboxes

Vacuum Pumps

Liquid Ring Condenser Extraction Pumps

Drains Pumps

all stainlesssteel parts

removable setting clip

anti vibration setscrew drive

monolithic stationaries

Sump Pit Pump

However, it is the slurry applications and the experienceof AESSEAL® sealing the various types of rotatingequipment that will now be further detailed.



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Section 5 Coal ConveyorsPillow Block/Coal Screw

5

In the first stages of theprocess, coal has to betransported from storage tothe coal crushers. On theoutskirts of most coal firedplants, it is not uncommon tosee miles of conveyingequipment used for this verypurpose.

Conveying rolls are oftensupported by pillow blockbearing assemblies whichincorporate ineffective seals,

unable to prevent coal debris and dust migration intothe bearings.

Pillow Blocks are employed throughout the coal firedplant as shown in the photos to the right.

The lower photo shows the debris and contaminationaround the pillow block. This debris works past theineffective incumbent pillow block seal, taking thebearings out and creating downtime for the equipmentand plant.

Coal Conveyors / Pillow Blocks

Debris entering the pillow block bearings.

AESSEAL® have a range of bearing seals specificallydesigned for use in standard pillow block mounts,either as a retrofit or new supply.

These pillow block bearing seals, (LabTecta-PB™ andMagTecta-PB™) prevent dust and water contaminationof the pillow block bearings therefore maximizingequipment uptime and reducing maintenance/repaircosts.

Coal Conveyor

Coal feed screws are also employed to transport coaland typically consist of a rotating screw housed in acoal shoot.

MagTecta bearing seals were installed on a coal screwin a Coal fired Power generation plant in the Poland in2006.

The previous sealing solution repeatedly failed due tothe harsh environment and coal dust.

The MagTectas were installed with an air purge system,to push the debris away from the seal keeping theequipment operational when previous sealing solutionsfailed. See Case Ref. 3461

Coal Feed Screws

MagTecta™ installed on a coal field screw



Issue 3


Section 5 Coal Pulverizer/CrusherAir Fans

6

Before the coal is can enter the boiler/furnace it needsto be crushed into fine particles, of a similarconsistency to cement powder. Driving the coalcrushing equipment is a gearbox, similar to the Falkgearbox employed in a power plant in Ireland, shownright.

The coal crusher gearbox shafts are traditionally sealedwith lipseals which are unable to prevent coal dustmigration into the bearing oil and gears. Coal dust andgears/bearings unfortunately bring a whole newmeaning to coal crushing as upon debris entry, bearingdeterioration rapidly follows.

AESSEAL® bearing seals have been installed in coalcrusher gearboxes in a coal fired power plant sinceApril 2006. See Case Ref: 3269.

Coal Pulverizer/Crusher & Gearbox

Air Fans

Force Draft (FD) Fans

Forced Draft Fans are located within the ductworksystem upstream of the boiler. They take air from theatmosphere or boiler enclosure and force it into theboiler combustion. Depending on the size and type ofthe boiler there are between one and four FD fans withthe combustion system.

Gas Recirculation (GRF) Fans

Some power stations have one or two GasRecirculation Fans in the combustion system. Thesefans return a portion of the combustion flue-gas fromthe boiler outlet to the boiler furnace for steamtemperature control and control of NOx formation.

ID (Induced Draft)

There are typically between one and four Induced Draft(ID) Fans located within the ductwork systemdownstream of the boiler, between the precipitator orbag house and the chimney. They pull the flue-gas outof the boiler and through the precipitator and push itthrough the scrubber and to atmosphere through thechimney or stack.

There are typically three or four types of Air Fans surrounding the boiler/furnace.

Primary Air (PA) Fans

Clearly to create combustion/energy, the boilers need afuel source (coal powder) and oxygen.

From the photo below, the primary air fans ducting isshown as the square, right-angled construction thatfeeds into the top of the cylindrical boiler.

Aerial view of the boiler and PA fan location.



Issue 3


Section 5 Air Fans 7

The Primary Air (PA) Fan, shown below, is located upstream of the boiler, usually adjacent to the FD fans. They takeair/oxygen from the atmosphere or FD fan discharge and force it through the coal pulverizers, picking up the coalpowder and directing it into the boiler for burning.

There is usually one or two PA fans in a coal fired power station.

LabTecta Case Reference 3389

Industry: Coal Fired Power PlantApplication: PA FanPrevious solution: OEM labyrinth

A coal fired power station in the UK had problems withoil leaking out of the bearing housing on their PrimaryAir fans. The leaking oil created a multitude of problemsnot least, it was a plant health and safety hazard. Thecustomer required a split seal which was capable toaccommodate axial movement in both directions sothat the same seal could be mounted on either side ofthe bearing housing.

The 5.000” LabTecta-RDS™ seal (AZA11702PP001) wasinstalled in January 2007 and was an instant success.The customer is so pleased that they ordered a further18 seals to do all their PA fans for their next shutdown.The equipment shaft runs at 1,450 rpm and employs anoil circulating system.

The PA fan blows the coal/air mixture into the boiler,the coal particles burn within 3 to 4 seconds leavingspherical molten beads of ash. The ash particles thenstart to cool as they pass out of the furnace area withthe flue gas.

LabTecta-RDS™ installed on PA Fan (case Ref 3389).



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Section 5 Ash Jet PumpsAsh Crusher/Clinker Grinder

8

Ref: AZA11027

High Pressure Ash Jet PumpsSome pulverized fuel ash particles contact the boilertubes whilst still molten. If further particles impinge onthe same area, the molten or semi molten particles fusetogether to form a slag or clinker. This clinker then fallsin relatively large pieces into the bottom of the furnace.

The clinker is quenched by water sprayed to freeze itand break it up by thermal shock. High pressure ash jetpumps are used to deliver the water, which is used forthe spraying operation.

AESSEAL have sealed ash jet pumps in many coal firedpower stations around the globe. Examples of thesingle cartridge seals used on ash jet pumps in Ireland,are shown to the left.

Ash Crusher/Clinker GrindersThe clinker pieces are ground further by an Ashcrusher. The resulting product is known as FurnaceBottom Ash or FBA.

Ash crushers grind the clinker pieces into a finepowder, so that they can be mixed with water for easeof downstream transportation. They are traditionalsealed using shaft packing which constantly leakswater, wears the shaft creating high refurbishmentcosts and requires periodic monitoring and adjustmentby operators.

AESSEAL have sealed Ash crushers for many yearsusing TC/TC Convertor II single cartridge seals (fourseals per crusher) The benefit of the single cartridgeseal is that there are no equipment modificationsrequired and it is a plug and play solution. It takes theoperational sealing issues away from the operators.See Case Ref. 1570

Over 60% of the total production of power station ashis sold for use in various industrial applications,typically the building industry.

Furnace bottom ash accounts for around 15% of ashproduction and almost all of it is sold.

Pulverized fuel ash accounts for the remaining 85% ofash production and typically over half is sold.



Issue 3


Section 5 Pulverized Fuel AshAsh Hopper

9

Pulverized Fuel AshWater is injected into the bottom of the boiler to knockthe ash off the boiler surfaces.

Pulverized fuel ash (PFA) particles are captured fromthe flue gas by electrostatic precipitators (shown below)before the gas is allowed to pass to atmosphere.

Electrostatic Precipitators

Pulverized Fuel ash is then held in hoppers beneath theprecipitators.

Ash Hopper

Fly ash accumulation hoppers are positioned beneath the electrostatic precipitators, to collate ash fortransportation to the ash pond.

Before is transferred, the ash is passed through Ash Conditioners.

The diagram below shows the position of the Ash Hopper (item 18) within the process.



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Section 5 Ash ConditionersAsh Transfer

10

Ash ConditionersAn ash conditioner is essentially a horizontal mixerwhich takes ash feed from a silo above, and mixers itwith sprayed water, to create a slurry.

Ash Conditioners can be difficult to seal as they sufferfrom a high degree of vibration.

AESSEAL have successfully sealedconditioners using the AESSEAL® type 245shaft packing. Once conditioned, the ashslurry can be transferred.

Large multi-staged slurry pumps, as shown below, areoften employed to transport/pump the ash.

The fly ash transfer pumps are typically heavy dutyslurry pumps, manufactured by companies such asWarman or Goulds.

In a coal fired power generation plant in South Africa,AESSEAL installed CDPH double seals and systems onWarman A/H 10/8 F Frame in nine fly ash transferpumps.

In the plant three pumps work in series to increase thepressure to 18 bar (261 psi).

On this one application alone, the previously installedsingle seals consumed 200 liters (50 gallons) of waterper minute.

Ash TransferThe slurry solution is then either pumped to land fill ortransported to a slurry to lagoon for storage/disposal.The slurry may contain between 15 to 20% ash solids,which are subsequently allowed to sediment undergravity.

Approximately 30 to 50% of the water-soluble materialwill be dissolved in the decanting water. In addition,clean water may be passed through slurry pipelines, toreduce scaling problems, when ash is not beingproduced.

The slurry may be subsequently used for a number ofapplications such as in the building industry, forCement and Block production, as shown below.

The Figure above shows the typical uses for the ashbi-product of the Coal Fired power generation process.

Dust Filter

WeighingFeeder

Make-UpWater Pump

Classifier

LimestoneDay Silo

Ball Mill

LimestoneSlurry StorageTank

Mill Slurry Tank

Mist EliminatorWash WaterTank

Gas/GasHeater

Gas/GasHeater

Stack

From ID FansOxidation Air Blower

AbsorberPrimaryWasteWater

Hydrocyclone

Waste WaterBleed Tank

GypsumBleed Pumps

Gypsum DewateringFeed Tank

GypsumDewatering

Hydrocyclone

GypsumCake

Filtrate Tank

SecondaryWaste WaterHydrocyclone Sump

Vacuum BeltFilter

Secondary WasteWater Hydrocyclone

Dewatering Area Sump

To Waste WaterTreatment System

Waste WaterTreatment Feed Sump

From Waste WaterTreatment System

AbsorberRecirculation

Pumps

Bypass

Oxidation Air Blower

Pump SealAgitator Seal

B

Absorber



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Section 5 Flue GasDesulphurization

11

Flue Gas Desulphurization

Why Consider AESSEAL® for Flue GasDesulphurization/Scrubber Duties?

• Conformance to increasing environmental, EPA and government legislation

• Improved equipment reliability and performance• Rapid delivery performance, including customized

designs• Full upgrade and replacement service for OEM and

non-AES products • Total Solutions: Absorber Pumps, Pre-Sat Pumps,

Agitators, Ball Mills, Centrifuges, Conveyors and Electric Motors

Power Station Absorber

FGD Process

Clean FlueGas Out

Perforated TrayPromotes GasSlurry Contact

Large AbsorberRecirculationPumps

MoistureSeparator

S02 & FlueGas

OxidationZone

Agitator/Mixer

Our wide range of seal support systems and bearingprotectors compliment the mechanical seal range,enabling the supply of TOTAL packaged solutions forFGD applications from:

• Wet: Limestone Gypsum, Seawater washing, Ammonia Scrubbing and Wellman Lord

• Semi-Dry: Spray Dry, Duct Spray Dry and Circulating Fluidized Bed

• Dry: Sodium Bi-Carbonate Injection and Furnace Sorbent Injection

FGD Sealing Applications/Opportunities

Several non-AES suppliers of mechanical seals haveattempted to seal FGD lime and limestone absorbersystems.

One such supplier offers a product, which does notemploy springs or a metal bellows to energize the sealfaces together. Instead, the supplier uses a rubberbellows configuration, which is particularly prone totearing in start-up conditions.



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Section 5 Issues with non-AESseal designs

12

Typical design of a non-AES slurry seal

What effect will the slurry have on the black elastomeric partduring equipment start up?

‘A full OEM and Non-AES sealrefurbishment and upgrade service.’

Fully refurbished non-AES Seal designs

AESSEAL® inventory a full range of seal facesspecifically to suit the non-AES 1875, 2750, 3750, 4500,5500, 6500, 7500 and 9500 market place designs andtherefore can offer a fast and efficient service to repair,upgrade or replace the non-AES product.

Component manufacturing facilities at AESSEAL plc Derby, one of over 40 authorizedrepair centers worldwide

Issues with non-AES seal designs

Seal face breakage.



Issue 3


Section 5 AESSEAL® SingleSlurry Seals

13

Single Cartridge Mech Seal - FDGSS™

Exotic Alloy FGDSS™ - Single Cartridge Seal

FGDSS™ installed on a slurrypump in the UK

The outside diameters of theStationary and Rotary SealFaces are identical in size. Thishelp to avoid abrasivessolidifying on either seal faceand bonding the two seal facestogether.

Pre-Equipment start up Post-Equipment start up

SealFace

Fixed Drive Pin

ShaftRotation

Point orline contact

Pre-Equipment start up Post-Equipment start up

SealFace

Floating Drive Pin Pin Rotation

Line orface contact

ShaftRotation

Robust and reliable seal face drive (Patented FloatingDrive Technology) reduces the high stress points onthe monolithic FGDSS™ seal faces. This reduces theprobability of seal face damage during equipmentstart-up, improving sealing longevity.

Conventional Pin drive with monolithic seal faces

AES Floating Pin drive with monolithic seal faces

FDGSS™ - Seal Face Design

FDGSS™ - Seal Face Spring Position

• The FGDSS™ is a stationary single cartridge seal, with monolithic seal faces, designed for low to medium duty slurry applications

• The multiple springs, which energize the seal faces, are out of the process media (Non-Clogging)

• The FGDSS™ incorporates a shroud to prevent spring clogging from atmospheric contamination/debris

• Available in abrasion resistant wetted components(Exotic Alloy FGDSS™)

Shrouded multi spring design to prevent spring clogging

FDGSS™ - Seal Face Drive Design

AESSEAL® Single Slurry Seals

OEM Model OEM Model

Warman® 1.5/1 B-AH Warman® 8/6 F-AH

Warman® 3/2 C-AH Warman® 10/8 F-AH

Warman® 4/3 D-AH Warman® 10/8 G-AH

Warman® 6/4 E-AH Warman® 650 TUL

AESSEAL® FGDSS™ slurry seal designs suit theequipment shown in the table below and / or similarequivalent pumps:

up to 9.500” (240mm)

Silicon Carbide andTungsten Carbide

Viton®, EPR, Nitrile, Kalrez® & Alfas®

Shaft Size*†

Face Materials

Elastomer Options

* Not all sizes inventoried, not all metallurgies may be offered in all sizes.Contact your nearest AESSEAL® office for availability



Issue 3


Section 5 AESSEAL® DoubleSlurry Seals

14

AESSEAL® Double Slurry Seals

Exotic Alloy CDPH™

CDPH™ and SSE-25™ Systeminstalled on a Fly Ash Transferpump

UHDDS™ - Ultra Heavy Duty Double Cartridge SealCDPH™ - Double Cartridge Seal

The AESSEAL range of doubleseals are designed to meetthe arduous requirements ofslurry applications. Largeports and increased radialclearances enable the seals,when coupled to the correctsealing plan, to maintain astable fluid film for extendseal face life.

The CDPH™ range of doublecartridge seals have beeninstalled on fly ash transferpumps in coal fired powergeneration plants in South Africa since 2006. The CDPH’s with SSE-25™ supportsystems replaced gland packing and saved the plant over 200 litres/minute (50gallons/minute) of water consumption per year.

• The UHDDS™ is a stationary double cartridge seal designed for arduous slurry applications using API 682 qualified technology

• The multiple springs, which energize the stationary seal face, are out of the process media (non-clogging)

• Integral and extremely efficient bi-directional barrier fluid circulating device (Plan 53) keeps the seal facescool

• Available in a wide range of abrasion-resistant wetted components, including solid Tungsten carbide gland insert

• The CDSA™ and CDPH™ seals are rotary double cartridge seals, with shrink-fitted faces, designed for medium to high duty slurry applications

• The multiple springs, which energize the rotary seal face, are positioned out of the process media (non-clogging)

• Robust seal face drive mechanism

• Available in abrasion-resistant wetted components (Exotic Alloy CDSA™ and CDPH™)

• Hydraulically balanced seal faces for reduced heat generation and improved seal life

PRESSURE LOW MEDIUM HIGH

SLURRY DUTY

LOW FGDSS DMSF/DMSCCVSD SMSSCURC

MEDIUM FGDSS CDPH UHDDSCVSD DMSF/DMSCCDSA

HIGH CDPH UHDDS



Issue 3


Section 5 Submersible Sump PitPump Solutions

15

Submersible Sump Pit Pump Solutions16 KSB Submersible Sump Pit Pumps were installed ina coal fired UK power station and had a failure mode ofoil bath contamination.

The Solution is the PUMPPAC-SOU™ System.

PUMPPAC SOU cools, cleans and ensuresthat clean oil is always supplied.

Moisture Sensor can be placed in thereturn line to warn of seal failure.

Not ALL sealing solutions are the same. Equipmentreliability improvements can be made by changing theseal environment and/or upgrading the seal design.

AESSEAL® can provide inexpensive seal conversion kitsto upgrade non-AES seal designs or to change theOEM equipment seal environment, in order todramatically improve seal life.

• Creates an ideal seal environment • Produced in a wide range of abrasion/chemical

resistant materials• One-off purchase• No primary equipment/shaft wear

Seal Conversion Kits

The PUMPPAC-SOU™ system force circulates oil to thesubmersible pump seals in an API Plan 54 system.

This not only provides idealized seal face lubrication, itpermits frequent oil sampling to be conducted atsurface level, therefore provides an early indication ofseal distress and/or early maintenance/replacement ofthe seal face lubricant.

AESSEAL® Conversion Kit

web: http://www.aesseal.com email: [email protected]

Our Purpose:

‘To give our customers such exceptional service that they need never consider alternative sources of supply.’

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9/07AESSEAL plc, Rotherham, UK. Tel: +44 (0) 1709 369966 [email protected]

AESSEAL plc, Derby, UK. Tel: +44 (0) 1332 366738 [email protected]

AESSEAL plc, Peterborough, UK. Tel: +44 (0) 1733 230787 [email protected]

AESSEAL plc, Hamilton, UK. Tel: +44 (0) 1698 540422 [email protected]

AESSEAL plc, Middlesbrough, UK. Tel: +44 (0) 1642 245744 [email protected]

AESSEAL plc, Upminster, UK. Tel: +44 (0) 1708 256600 [email protected]

AESSEAL plc, Pontypridd, UK. Tel: +44 (0) 1443 844330 [email protected]

AESSEAL plc, Warrington, UK. Tel: +44 (0) 1925 812294 [email protected]

AESSEAL plc, Grimsby, UK. Tel: +44 (0) 1472 357852 [email protected]

AESSEAL (MCK) Ltd., Lisburn, UK. Tel: +44 (0) 28 9266 9966 [email protected]

AESSEAL Ireland Ltd., Lisburn, UK. Tel: +44 (0) 28 9266 9966 [email protected]

AESSEAL Ireland Ltd., Co. Cork, Eire. Tel: +353 (0) 214 633477 [email protected]

AESSEAL Inc., Knoxville, TN. USA. Tel: +1 865 531 0192 [email protected]

AESSEAL Inc., Kingsport, TN. USA. Tel: +1 423 224 7682 [email protected]

AESSEAL Midwest Inc., Marion, IA. USA. Tel: +1 319 377 0170 [email protected]

AESSEAL Inc. NE, Fairfield, ME. USA. Tel: +1 207 453 6915 [email protected]

AESSEAL Inc. NW Longview, WA. USA. Tel: +1 360 414 0118 [email protected]

AESSEAL ALAA, Dammam, Saudi Arabia. Tel: +966 3 847 0033 [email protected]

AESSEAL Argentina S.A., Buenos Aires, Argentina. Tel: +54 11 4744 0022 [email protected]

AESSEAL Australia Pty Ltd., Seventeen Mile Rocks, Australia. Tel: +61 7 32791144 [email protected]

AESSEAL Benelux B.V., Breda, Holland. Tel: +31 (0) 76 564 9292 [email protected]

AESSEAL Brasil Ltda. São Paulo, Brazil. Tel: +55 11 5891 5878 [email protected]

AESSEAL Canada Inc., Vancouver, Canada. Tel: +1 604 535 7512 [email protected]

AESSEAL Chile SA., Providencia Santiago, Chile. Tel: +56 2 2343022 [email protected]

AESSEAL China Ltd., Ningbo, China. Tel: +86 (0) 574 8823 2888 [email protected]

AESSEAL Colombia S.A., Bogota, Colombia. Tel: +57 (1) 634 9095 [email protected]

AESSEAL Czech s.r.o., Brno, Czech Republic. Tel: +420 543 212 489 [email protected]

AESSEAL Danmark, A/S, Køge, Denmark. Tel: +45 56 64 14 00 [email protected]

AESSEAL Deutschland AG, Bad Orb, Germany. Tel: +49 (0) 6052 918810 [email protected]

AESSEAL Deutschland GmbH, Kronau, Germany. Tel: +49 7253 8090 [email protected]

AESSEAL Finland OY, Muurame, Finland. Tel: +358 1433 84500 [email protected]

AESSEAL France S.A.R.L., Nieppe, France. Tel: +33 320 172850 [email protected]

AESSEAL India PVT. Ltd. Pune, India. Tel: +91 20 24220868 [email protected]

AESSEAL Coldweld Pvt., Ltd Goregaon, Mumbai, India. Tel: +91 22 6702 9028 [email protected]

AESSEAL Italia SRL., Gallarate, Italy. Tel: +39 0331 799 952 [email protected]

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AESSEAL Malaysia, SDN. BHD., Pahang, Malaysia. Tel: +609 583 6133 [email protected]

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AESSEAL Polska SP. ZO.O., Bielsko Biala, Poland. Tel: +48 33 818 4135 [email protected]

AESSEAL Pty Ltd., Durban, South Africa. Tel: +27 (0) 31 903 5438 [email protected]

AESSEAL Pty Ltd., Johannesburg, South Africa. Tel: +27 (0) 11 466 6500 [email protected]

AESSEAL Ibérica S.L., Tarragona, Spain. Tel: +34 977 55 43 30 [email protected]

AESSEAL Sweden AB. Stockholm, Sweden. Tel: +46 (0) 8 55602870 [email protected]

AESSEAL Vo Lee Ltd., Kaohsiung City, Taiwan. Tel: +886 7 310 0630 [email protected]

AESSEAL Turkiye, Istanbul, Turkey. Tel: +90 (0) 216 304 0237 [email protected]

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sealing coal fired power industry slurries - a.r....

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