01.12.2004Paul Bungartz GmbH&Co.KG, Germany 1 Special Centrifugal Pumps Proved for over 60 years in Fertilizer Industry Chemical / Pharmaceutical.

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

1

Special Centrifugal Pumps

Proved for over 60 years in

•Fertilizer Industry

•Chemical / Pharmaceutical Industry

•Power Plants

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

2

Special Centrifugal Pumps

Bungartz system

• since 1930

• Contactless hydrodynamic shaft seal

• by back vanes or additonal seal expeller

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

3

Advantages of System Bungartz

• Sealing of shaft clearance (rotating shaft – standstill casing) hydrodynamic by additional vanes

• During operation no extra seal required (for example stuffing box or mechanical seal)

Saving of a maintenance part

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

4

Hydrodynamic sealing

HS

H2

H2

vanes

Back vanes

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

5

Comparison

Bungartz-Pump

• No friction between packing and shaft

• No lubrication required

• No wear• No leaking during

operation

Pump with packing

• Friction between packing and shaft

• Lubrication required• wear• Leaking not avoidable

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

6

Comparison

Bungartz-Pump

• Maintenance-freeSafety operation

during long operation

Pump with packing

• Regular check

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

7

Type: MOR

• for small suction head

• < 3-4 mCl• with one impeller• vanes < back vanes

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

8

Type: UMOR

• For high suction head

• Up to 30 mCl• With additional seal

expeller

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

9

Heavy duty bearing bracket

• Big shaft

• Bearing design for worste case

There are pumps in operation, we have delivered 40 years ago

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

10

Model M-UMOR

vanes

Back vanes

Seal expeller

Stuffing box

Circula-tion port

Centrifugal governor

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

11

Design: M-MOR• wearing plates with

simple geometry

• wearing plates are cheap spare parts

• wearing plates are also available in materials with high hardness

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

12

MOS (without flight governor)

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

13

Design: SK-MOR• Welded construction

• Materials available, which are not castable

• for example Zirconium, Titanium, Tantal

• Using of homogeneous milled materials

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

14

Design: E -MOR• Cast iron coated with

rubber

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

15

Design: P-Si-MOR• Pump of Silicon Iron

• For very corrosive fluids (80%H2SO4, t = 160°C)

• additional amoured with grey cast iron

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

16

Example for Applications

Fertilizer Industrie•Ammoniumnitrat

•Phosphoric Acid

•Sulphuric Acid

•Urea Melt

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

17

Ammoniumnitrat (96-98%)

• With heating

• With heat detector connections

• With drain device• With Connections for

flushing

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

18

Ammoniumnitrat (96-98%)

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

19

98% AN - Melt

• Liquid near the boiling point

• Special pump with low NPSH

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

20

• 99,6% AN-Melt

• T = 175°C

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

21

Ammoniumnitrat (max 70%)

• With mechanical seal

• Throttle bushing

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

22

Sulphuric Acid

• Horizontal Pump– Type MOR (98% Sulphuric Acid, tmax 90°C)– Type P-Si-UMOR ( Sulphuric Acid, t > 100°C,

with solids)

• Vertical Pumps– With bearing in the liquid– Without bearings in the liquid

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

23

Sulfuric Acid

• Duplexmaterials• Nickel based alloys• Silicon Iron

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

24

Sulphuric Acid

• Hydrodynamic shaft seal

• T > 100 °C

• No problems with solids

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

25

Sulphuric Acid

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

26

Phosphoric Acid

• Horizontal Pumps Type M-UMOR

• Vertical Pumps Type T (without bearings in the liquid

• Material depending on the concentration and the solids (for example Gypsum)

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

27

Phosphoric Acid

• M-MOR or

M-UMOR• With wear plates• similar Sanicro28• also for gascontaining

liquids

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

28

Phosphoric Acid

• Without bearings in the liquid

• lenght up to 1,2m

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

29

Nitric Acid

• For high suction heads

• 1.4301 (middle concentration)

• 1.4361 (high concentration)

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

30

Nitric acid

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

31

Urea Solution and Urea Melt

• T = 140 °C

Vacuum 0,3 bar abs

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

32

Urea Melt• with stuffing box

• with heating

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

33

01.12.2004 Paul Bungartz GmbH&Co.KG, Germany www.bungartz.com

36