DUCHTING General Presentation

75 years Quality through Experience

Company Profile Founded in 1938 Based on the German mining industry

1938

1958

2000

Company Profile Today

Sprockhövel (2.200 m²)

Witten (7.000 m²)

Company Profile Today

Sprockhövel (2.200 m²)

Witten (7.000 m²)

Company Profile Headquarter based in Witten, Germany ~ 120 Employees Privatly owned in 3rd Generation Certified according to ISO 9001 since 1995

Company Profile The Group

Company Profile Engineering

Manufacturing and Assembly

After-Sales Service Testing

Commissioning

Company Profile Gas Cleaning Industrial Applications

Seawater Desalination

Mining

Product Range

Single-Stage pumps

15 bar (217 PSI)

Nominal pressure up to 15 bar (217 PSI) Flow up to 20.000 m続/h (88,000 gal/min)

20.000 m続/h (88,000 gal/min)

Multi-Stage pumps

Nominal pressure up to 250 bar (3625 PSI) Flow up to 3.500 m続/h (15,400 gal/min)

250 bar (3625 PSI)

3.500 m続/h

(15,400 gal/min)

Pumps mainly designed for corrosive and abrasive media

Product Range

Max Max Ph-Value Max Max Flow Head Density Particle Size MC MCC

[m続/h]

[bar]

([gal/min])

([PSI])

1,300

10

(5,700)

(145)

20,000 (88,00)

ROWA-E

12,000 (52,800)

ROWA 2/4S DH ROWA-HPB MHK/HK ROWA-HP

6

[g/l] 0-12

1,700

40

(8,800)

(580)

4,000

10

(17,600)

(145)

3,000

15/100

(13,200)

(217/1,450)

2,160

120

(9,500)

(2,320)

3,500

100

(15,400)

(1,450)

1 (0,04)

0-12

1,700

1 (0,04)

0-14

1,700

(145)

2,000

[mm] ([inch])

(87)

10

Material

50

various metals

(2)

0-14

1,700

50

various metals

(2)

0-14

2,500

100

various metals

(4)

0-14

1,050

0-14

1,050

-

various metals

3

various metals

(0,12)

0-14

1,050

-

various metals

Single-Stage Pumps Mineral Cast Pumps made of for corrosive and abrasive media

MC Mineral Cast

MCC Mineral Cast Compound

Single-Stage Pumps Type MC

Nominal pressure up to 10 bar (145 PSI) Flow up to 1.300 m続/h (5,700 gal/min) All main wetted parts are made of

High wear and corrosion resistance pH-Values 0-12 Maximum Density up to 1,700 g/l

Single-Stage Pumps Type MC Volute casing impeller cover

DÜTEC® mechanical seal

DN 32 – DN 300 (≥ DN 200 with suction side wear plate) ANSI 1 ¼“ – 12“ (ANSI ≥ 8“ with suction side wear plate)

Single-Stage Pumps Mechanical Seal DÜTEC® & DÜTEC® -C

DÜTEC® Single-stage mechanical seal available for MCs & MCCs

DÜTEC®-C Single-stage mechanical seal in cartridge design for MCCs

Single-Stage Pumps Type MCC

Nominal pressure up to 6 bar (87 PSI) Flow up to 20.000 m続/h (88,000 gal/min) All main wetted parts are made of

High wear and corrosion resistance pH-Values 0-12 Maximum Density up to 1,700 g/l

Horizontal and vertical arrangement Extendend Warranties available

Single-Stage Pumps Extended Warranty on MCCs for seawater and gypsum slurry

10 years abrasion warranty on the liner 6 years abrasion warranty on the impeller 6 years abrasion warranty on the wear plate Lifetime anti-corrosion warranty on all

-parts

Single-Stage Pumps Type MCC liner wear plate impeller cover

DÜTEC®-C mechanical seal

DN 400 – DN 1.000 (bigger sizes available) ANSI 16“ – 40“ (bigger sizes available)

Single-Stage Pumps Comparison MC & MCC

Single-Stage Pumps Mechanical Seal DÜTEC® & DÜTEC® -C

DÜTEC® Single-acting mechanical seal available for MCs, MCCs & ROWA-Es

DÜTEC®-C Single-acting mechanical seal in cartridge design for MCCs

Hard as Diamond

The Material

Silicon carbide

+

Epoxy resin

The Material

Silicon Carbide: >80%

Epoxy Resin: <20% Zoom: 100x

The Material Comparison between

and other materials Corrosion Resistance

Wear Resistance

Hastelloy DUPLEX stainless steel Ni - Hard 4

Special problem occurs with Erosion-Corrosion

The Material

Linear rate of wear [mm/a]

Wear in Combination of Flow Velocity 10.000

1.4517 1.000

100

10 14

18

22

26

Flow velocity [m/s] test medium: water-quartz-mixture concentration: 30g/l particle size: ~23Âľm

The Material â&#x20AC;&#x153;Erosion-Corrosion is a material loss due to mechanical wear on the surface as the corrosion is caused by the erosion of the protective layers.â&#x20AC;?

metal

protective layer

The Material Effects of the Erosion-Corrosion

The Material Comparison of Erosion-Corrosion on DUPLEX and

impellers

DUPLEX stainless steel

after 11.000h of operation

after 24.000h of operation still in operation (85.000h)

The Material Limits of Medium temperature < 135 째C (< 275 째F) Maximum particle size < 1 mm (< 0.039") pH value < 12

The Material Advantages of 100% corrosion resistance in seawater applications Highly wear resistant Lower noise and vibrations compared to metal pumps Easy quality control of castings, easy to repair Lower material costs compared to DUPLEX stainless steel Shorter delivery times Stable price validity

Manufacturing View into the evacuated casting machine

Manufacturing Casting of a MCC shell

Manufacturing Heat Treatment

1st heat treatment: hardening

2nd heat treatment: tempering

Manufacturing Machining

Other Products Engineered impellers

Klaus Union

KSB

Warman

Sulzer

Other Products Hydrocyclones

Other Products Nozzles

Other Products Coatings

Other Products Reducers

Repairing

2 1

3 5

4

SIConit based revamping liquid SIConit

速

SIConit Volute Casing revamping with SIConit

速

1 before 2

4 after 5000h

3 complete revamping

welded stainless steel net

SIConit Impeller repair with SIConit

速

1

4 2

3

SIConit Coating of new agitator with SIConit

速

1 original 2

coating

4 balancing 3 finished

SIConit Wear parts before

SIConit Wear parts afterwards

Single-Stage Pumps Metal Pumps for corrosive and abrasive media

ROWA-E

DH

ROWA-HPB

Single-Stage Pumps Type ROWA-E

Nominal pressure up to 10 bar (145 PSI) Flow up to 12.000 m続/h (52,800 gal/min) Available in almost all metallic materials from cast iron to SUPER DUPLEX High wear and corrosion resistance pH-Values 0-14 Maximum Density up to 1,700 g/l

Available in combined single-stage/ multistage design

Single-Stage Pumps Type ROWA-E oil lubricated antifriction bearing shaft

mechanical seal

wear plate

impeller

bearing bracket spiral casing

Combined Single-Stage Pumps Type ROWA 2/4S

Nominal pressure up to 40 bar (580 PSI) Flow up to 2.000 m続/h (8,800 gal/min) Available in almost all metallic materials from cast iron to SUPER DUPLEX High wear and corrosion resistance pH-Values 0-14 Solid contents up to 700 g/l

2- or 4 combined horizontal single-stage slurry pumps (ROWA-E equivalent) Compensation of axial thrust by counterrotating impellers

Combined Single-Stage Pumps Type ROWA 2S wear plate gland packing

shaft

impeller

oil lubricated antifriction bearing

Single-Stage Pumps Type DH

Nominal pressure up to 10 bar (145 PSI) Flow up to 4.000 m続/h (17,600 gal/min) Large impeller diameters => low wear reducing speed Design allows use of very hard materials => up to 510 HB Extreme wear and corrosion resistance pH-Values 0-14 Maximum Density up to 2,500 g/l

Single-Stage Pumps Type DH oil lubricated antifriction bearing

wear plate gland packing

shaft impeller

bearing bracket

spiral casing

Single-Stage Pumps Type ROWA-HPB

End-suction pump type, centerline mounted Available in API 610 / ISO 13709 design (Oil & Gas) Available for hot liquid applications

Horizontal or vertical arrangement Differential pressure up to 20 bar (290 PSI) Flow up to 3.000 m続/h (13,200 gal/min) Design pressure 100 bar (1,450 PSI), suction pressure up to 80 bar (1,160 PSI) Available in almost all metallic materials from cast iron up to SUPER DUPLEX High corrosion resistance

pH-Values 0-14

Single-Stage Pumps Type ROWA-HPB

double volute casing oil lubricated antifriction bearing shaft

mechanical seal impeller

bearing bracket

Single-Stage Pumps Type ROWA-HPB

Pull-out process design for easy access Cartridge mechanical seal Radial thrust compensation by double volute casing to reduce shaft deflection and bearings loads Critical shaft speed above operating speed (VFD operation up to 4.000 rpm) Wear rings in compound material (PEEK reinforced carbon fiber) to achieve small clearances

Multi-Stage Pumps High-Pressure pumps for corrosive and abrasive media

LHK/MHK/HK

ROWA-HP

Multistage Pumps Type MHK/HK

Nominal pressure up to 160 bar (2,320 PSI) Flow up to 2.160 m続/h (9,500 gal/min) Available in almost all metallic materials from cast iron up to SUPER DUPLEX 4-pole pump (max. 1800 rpm) for liquids with slightly abrasive content pH-Values 0-14 Maximum Density up to 1,050 g/l

Horizontal and vertical arrangement

Multistage Pumps Type MHK/HK

Design Features Axial thrust compensation by combination of balancing disc and balancing drum with wear indicator (> 40 bar (> 580 PSI)) Shaft sealing by stuffing box or mechanical seals Flanges positionable in 90째 steps; manufactured according to DIN/ASME Flanges at intermediate casings available One or two connective shaft ends available

Multistage Pumps Type MHK/HK wear rings (at each stage)

impeller

diffuser

balancing counter disk

balancing disk

gland packing

shaft

bearing oil lubricated antifriction bearing

shaft sleeve intermediate stage casing suction casing

discharge casing

Multistage Pumps Impeller Design Features

CFD assisted design Optimal specific speed for best efficiency Optional suction impeller available to obtain low NPSH-values Different sets of impellers for each pump size available Ceramic moulds result in smooth surfaces to reduce flow losses

Multistage Pumps Design Features

Suction chamber with favorable design for constant inlet velocities Reduced impact losses due to CFD optimized diffuser channels Optimized discharge casing shaped as a volute casing

Design Features Balancing Device

FAX + FAX + â&#x20AC;Ś = FE Full compensation of all axial forces

Balancing disc

F F A A X X

F E

Balancing counter disc

Self-actuating thrust compensation Minimum efficiency drop High reliability of operation Wear control through wear indicator

Control of wear during operation For optimal planning of maintenance work Optical indicator standard Additional inductive wear indicator applicable

Design Features Optional Suction Impeller dS1 < dS2

standard impeller ds1

ds2

special designed impeller for low NPSHr rates

Multistage Pumps Wear Control Shaft marks show wear status

Wear indication by inductive sensor Output signal: 0…10 V / 2…20 V voltage 0…20 mA / 4…20 mA current

Multi-Stage Pumps Type ROWA-HP

Nominal pressure up to 100 bar (1,450 PSI) Flow up to 3.500 m続/h (15,400 gal/min) Available in almost all metallic materials from cast iron up to SUPER DUPLEX 2-pole pump (up to 3.600 rpm) for highly corrosive liquids pH-Values 0-14

Multi-Stage Pumps Type ROWA-HP

Design Feature Flanges positionable in 90째 steps Manufacturing acc. to ISO, DIN and ASME

Easy replacement of all wear parts Critical shaft speed above operating speed Wear rings in compound material (PEEK) small clearances but reliable operation

Axial thrust compensation by combination of balancing disc and balancing drum avoid axial bearings and excessive oil supply units

Multistage Pumps Type ROWA-HP discharge casing

impeller

balancing counter disk mechanical seal

diffuser

oil lubricated antifriction bearing

ceramic bearing

shaft

balancing disk

wear rings

suction casing

(PEEK)

shaft sleeve

intermediate stage casing

Multistage Pumps Impeller Design Features

CFD assisted design Optimal specific speed Optional suction impeller available to obtain low NPSH-values Different sets of impellers for each pump size available Ceramic moulds result in smooth surfaces to reduce flow losses

Multistage Pumps Design Features

Suction chamber with favorable design for constant inlet velocities Reduced impact losses due to CFD optimized diffuser channels Optimized discharge casing shaped as a volute casing

Design Features Balancing Device

FAX + FAX + â&#x20AC;Ś = FE Full compensation of all axial forces

Balancing disc

F F A A X X

F E

Balancing counter disc

Self-actuating thrust compensation Minimum efficiency drop High reliability of operation Wear control through wear indicator

Control of wear during operation For optimal planning of maintenance work Optical indicator standard Additional inductive wear indicator applicable

Design Features Optional Suction Impeller dS1 < dS2

standard impeller ds1

ds2

special designed impeller for low NPSHr rates

Multistage Pumps Wear control Shaft marks show wear status

Wear indication by inductive sensor Output signal: 0…10 V / 2…20 V voltage 0…20 mA / 4…20 mA current

Competitiveness and Reliability Test Field

Every pump is tested prior dispatch According to DIN EN ISO 9906 Test grade 1 (highest standard) Flow up to 25.000 m続/h (110,000 gal/min) Power supply up to 5 MW (6705 hp) Pressure limit up to 200 bar (2900 PSI) Various tests are available (vibration, sound pressure, NPSH etc., witnessed tests)

Competitiveness and Reliability Low Lifecycle Costs

Wide range of impeller sets for high efficiencies and low wear Optimal specific speed design for best efficiency and lowest wear Selection of high quality materials Highest MTBS in class Very short down-time for exchanging wear parts Condition monitoring

Design Features rpm vs. wear

rpm n1

n1 > n2

rpm n2

Higher speed lead to a potential increase of wear by Exponent 2 to 4 (depending on media specifications)

Competitiveness and Reliability Condition Monitoring

Sensor for condition monitoring Easy integration into control system For non- and explosive areas available Software included free of charge Indication of Cavitation Misalignment Bearing wear

Internet-based control and support available

Competitiveness and Reliability References

MC: more than 2.800 units sold MCC: more than 600 units sold ROWA-HP & HPB: more than 500 units sold LHK/MHK/HK: more than 2.000 units sold Various good references available

Processes and References Gas Cleaning Industrial Applications

Seawater Desalination

Mining

Seawater Desalination Reverse Osmosis

Seawater

Pretreatment Filtration Chemical treatment

Reverse Osmosis High-pressure Pump ERD Booster Pump RO-membrane Energy-recovery

Concentrate

After-treatment Disinfection Additives

Product

Seawater Desalination Energy Recovery by Pelton Turbine

M

PreTreatment

Disposal

Product

Seawater Desalination Traditional Pump Unit Radial multistage pump arranged in the center with two conective shaft ends and variable nozzle connection Pelton Turbine

Standard motor with one shaft end and normal air flow conditions Pelton Turbine with nozzle valve replaces concentrate control valve

High-Pressure Pump

Seawater Desalination Type ROWA-RT

Simple and proven design Easy control by needle valve Single, double or triple nozzle operation

High efficiency along the complete operating range (>90%) In combination with VFD speed control widest operating range

Standard roller bearings outside the casing Variable flange location Material in DUPLEX or SUPER DUPLEX

Seawater Desalination Pelton Turbine type ROWA-RT

nozzle Pelton wheel shaft Casing

oil lubricated antifriction bearing

Seawater Desalination Energy Recovery by Pressure Exchanger (PX)

M

PreTreatment

Product M

Disposal

Seawater Desalination Complete Package

Matching single components maximize package efficiency Complete package pre-mounted â&#x20AC;&#x201C; only final adjustment at site necessary Final testing of the complete package on our test field to verify operating conditions Single source responsibility

Seawater Desalination Spain, Ibiza

3 high-pressure pumps type HK 15x5 Q=313 m続/h @ 70 bar (1,378 gal/min @ 1,015 PSI)

Delivered in 1992

Seawater Desalination Egypt, South Sinai

3 high-pressure pumps type HK 100x7 3 pelton turbines type ROWA-RT Q=135 m続/h @ 62 bar (594 gal/min @ 899 PSI)

Delivered in 1996 (today 14 similar pumps operating in 5 different SWRO plants in Egypt)

Seawater Desalination Algeria, La Fontaine

9 high-pressure pumps type HP 100x10 9 pelton turbines type ROWA-RT Q=232 m続/h @ 72 bar (1,021 gal/min @ 1,044 PSI)

Delivered in 2001

Seawater Desalination Oman, Sohar

3 high-pressure pumps type ROWA-HP 150x5 3 pelton turbines type ROWA-RT Q=367 m続/h @ 62 bar (1,615 gal/min @ 899 PSI)

Delivered in 2004

Seawater Desalination Qatar, Pearl

5 high-pressure pumps type ROWA-HP 200x2 810 m続/h @ 42 bar (3,566 gal/min @ 609 PSI)

Delivered in 2008

Seawater Desalination China, Tianjin

8 high-pressure pumps type ROWA-HP 150x3 605 m続/h @ 70 bar (2,663 gal/min @ 1,015 PSI)

8 high-pressure booster pumps type ROWA-HPB 250-380 796 m続/h @ 6 bar (3,504 gal/min @ 87 PSI)

Delivered in 2008

Seawater Desalination Australia, Brisbane

5 high-pressure pumps type ROWA-HP 200x2 833 m続/h @ 21 bar (3,667 gal/min @ 304 PSI) 5 high-pressure pumps type ROWA-HP 150x2 400 m続/h @ 26 bar (1,761 gal/min @ 377 PSI) 5 high-pressure pumps type ROWA-HP 100x3 162 m続/h @ 30 bar (713 gal/min

@ 435 PSI)

Delivered in 2010 Online Condition Monitoring System

Mining Germany, Heinrich Robert

high-pressure pump type HK 200x13 340 m続/h @ 110 bar (1,496 gal/min @ 1,595 PSI)

Delivered in 1974

Mining Germany, Ibbenb端ren

high-pressure pump type HKP 50x3 720 m続/h @ 30 bar (3,170 gal/min @ 435 PSI)

First supply in 1939 Last time supplied in 1988

Mining Poland, Bogdanka

high-pressure pump type HK 200x13 500 m続/h @ 100 bar (4,495 gal/min @ 1,450 PSI)

First supply in 2006 Two drive shaft ends

Mining Poland, Lubin

high-pressure pump type MHK 250x6 540 m続/h @ 67 bar (2,377 gal/min @ 971 PSI)

first pump supplied in 2005 3 additional pumps in 2006 and 3 additional pumps in 2008 one pump in 2010 one pump in 2012

Mining Bulgaria, Steelwork

single-stage pump type DH 300.70 900 m続/h @ 6,5 bar, 865 rpm (3,962 gal/min @ 94 PSI)

supplied in 1984

Mining Germany, Auguste Victoria

single-stage pump type DH 400.75 2.000 m続/h @ 4 bar, 742 rpm (8,805 gal/min @ 58 PSI)

supplied in 1992

Gas Cleaning Turkey, Iskenderun

Single-stage pump type MCC 500-800 4.010 m続/h @ 24 m, 596 rpm (17,655 gal/min @ 34.8 PSI)

Up to 70.000 ppm of chlorides supplied in 2001

Gas Cleaning Spain, Soto

Single-stage pump type MCC 600-850 4.926 m続/h @ 22 m, 542 rpm (21,688 gal/min @ 31.9 PSI)

Up to 30.000 ppm of chlorides supplied in 2006

Gas Cleaning Czech Republik, Melnik

Single-stage pump type MCC 700-850 6.223 m続/h @ 18,5 m, 535 rpm (27,399 gal/min @ 26.8 PSI)

Up to 25.000 ppm of chlorides supplied in 1996

Gas Cleaning China, Yuanbaoshan

Single-stage pump type MCC 800-950 9.800 m続/h @ 26,5 m, 595 rpm (43,148 gal/min @ 38.4 PSI)

Up to 60.000 ppm of chlorides supplied in 2005

Gas Cleaning Germany, Voerde

Single-stage pump type MCC 800-1100 8.800 m続/h @ 25,4 m, 495 rpm (38,745 gal/min @ 36.8 PSI)

Up to 30.340 ppm of chlorides supplied in 2005

Gas Cleaning Czech Republic, Tusimice

Single-stage pump type MCC 900-1180 11.000 m続/h @ 25,3 m, 424 rpm (48,431 gal/min @ 36.7 PSI)

Up to 30.000 ppm of chlorides supplied in 2007

Gas Cleaning Bulgaria, Maritza

Single-stage pump type MCC 900-1200 12.500 m続/h @ 25,4 m, 395 rpm (55,035 gal/min @ 36.8 PSI)

Up to 20.000 ppm of chlorides supplied in 2003

Gas Cleaning USA, KU Brown

Single-stage pump type MCC 1000-1250 15.352 m続/h @ 25,3 m, 388 rpm (67,592 gal/min @ 36.7 PSI)

Up to 10.000 ppm of chlorides supplied in 2006

75 years Quality through Experience