Reliable solutions for the oil and petrochemical industry

Advanced Process Solutions

EKATO Side Entry Agitators for Storage Tanks

EKATO AGITATORS FOR STORAGE TANKSRM

EKATO, the world market leader in mixing technology

Advanced Process Solutions

In the past 8 decades EKATO has developed to become the world market leader in mixing technology and today
offers optimized mixing technologies for the process-oriented industries. EKATO has been family-owned since its
founding in 1933 and maintains a worldwide presence with subsidiaries in Europe, Asia, Australia, South America,South Africa and the USA as well as a network of trading partners. The core competence is the development andmanufacture of engineered and customized industrial agitators including seals and seal supply systems as well asprocess plants.

CFD Computational Fluid Dynamics by EKATO
Computational Fluid Dynamics (CFD) visualizes the flow behaviour inside a tank under real conditions.
A CFD simulation allows to investigate a three-dimensional flow to define the optimum number andorientation of agitators to be installed in a tank.

EKATO in oil storage tanks
EKATO FLUID side entry agitators are state of the art in design and technology. Reliability, easy maintenance and aneconomical operation are the main benefits which rely on our experience and know-how in side entry technology.

Side entry agitators for oil storage tanks fulfill the following main duties:
Crude oil - BS&W control:
The mixer generated jet flow lifts the BS&W to prevent the tank bottom from local accumulation and build-up.
To reach all areas of the tank bottom properly, swivel angle type agitators are used which can be horizontally varied
to max. 30 degrees - on both sides of the tank center line. To keep the tank outlet free from deposit build-up theagitators should be installed in a cluster opposite to the tank outlet.
Blending, maintaining product uniformity, heat transfer:
Under consideration that there are no solids in the tanks, side entry agitators with fixed angle arrangement are used forblending, maintaining product uniformity and heat transfer.

Agitator components
1 Drive
EKATO FLUID side entry agitators are driven by gear or belt. E-motors, following latest IEC or NEMA standards, are applied.
Gearboxes of heavy duty design are designed to absorb all occurring loads at specified operating conditions. Toothed-belt drivesof antistatic type are fitted with protection covers.
2 Mechanical seal
Single or double-acting EKATO seal of cartridge design including seal supply system in line with API 682, modified for agitators.

Advanced Process Solutions

3 Mounting flange
Mounting flange connecting dimensions as per ASME B16.47 or ASME B16.5.

6114

325

4 Swivel device
Swivel angle +/ – 30° manual or automatic adjustment / actuation protection cover.
5 Agitator shaft
Solid agitator shaft in one-piece design.
6 Shut-off device
Shut-off for maintenance on mechanical seal while tank is full, with positive locking device (clamping flange).
7 Propeller
EKATO propeller in one-piece design (no bolted blades), statically balanced acc. to ISO 1940.
44

Double-acting mechanical seal type ESD 34N

Single-acting mechanical seal type ESD 142F

API plan 53 B
Used for liquid-lubricated double-acting pressurized seals: the external seal liquid will be pressurized by a springoperated pressure reservoir supplying clean seal oil to the seal chamber. The seal liquid pressure is maintained ata pressure higher than the tank pressure generated by the liquid level.

7API plan 65 A
Seal leakage control system: a seal failure will be detected by an excessive flow rate into the leakage collection
system.

API plan 53 B (modified by EKATO)

API plan 65 A (modified by EKATO)

Agitator arrangement
The proper agitator arrangement at the tank shell is the mostcritical parameter for a trouble-free tank operation. Jet stream
length and pumping capacity determine the required numberof agitators per tank. EKATO FLUID side entry agitators aredesigned for installation and removal from the tank in fully assembled condition.

FIXED ANGLE AGITATOR

Advanced Process Solutions

Gear driven agitator
Shaft diameter

mm

4565

Nominal speed *min-1

365 to 411

315 to 360

Impeller diametermm

to suit process conditions

Shaft length

mm

800

1000

Lantern / drive heightmm

1000

1200

Shaft diameter

mm

65

85

Nominal speed *min-1410

410

Impeller diametermm

to suit process conditions

Shaft length

mm

1000

1000

Lantern / drive height

mm

750

800

LengthBelt driven agitator

LengthDimensions approx. only. Certified drawing after order placement.
* Based on 50 Hz motors

TANK OPENING / MAX. IMPELLER DIAMETER
Manhole / nozzle
sizeNozzle length (mm) as per API 650
Dimensions for shell nozzles

Freeopening
(mm)

200

225

250

275

300

325

Max. impeller diameter (mm)ASME 18" / 150

430

ASME 20" / 150

480

ASME 24“ / 150

580

ASME 32“ / 150

780

510
600

560

770

730
805

SWIVEL ANGLE AGITATOR
Gear driven agitator
Shaft diametermm

Nominal speed *Impeller diameter

4565

365 to 411
mm

315 to 360

to suit process conditions

LengthShaft length

mm

800

1000

Lantern / drive heightmm8001000mm

6585

Belt driven agitator
Shaft diameter
Nominal speed *Impeller diameter

410mm

410
to suit process conditions

LengthShaft lengthmm

1000

1000

Lantern / drive heightmm

1050

1100

Dimensions approx. only. Certified drawing after order placement.
* Based on 50 Hz motors

EKATO SERVICE provides a broad range of services: „Service on site“,installation and start-up, including instruction and training of theplant operators as well as troubleshooting and availability aroundthe clock. Furthermore EKATO offers the required expertise for plant
optimization and preventive maintenance.

FLUID Misch- undDispergiertechnik GmbHIm Entenbad 879541 Lörrach
Germany
Tel. +49 (0) 7621 5809-0
Fax +49 (0) 7621 5809-16
E-mail: fluid@ekato.com

Find your local contact worldwide:
http://www.ekato.com/en/ekato-group/contact/contacts-worldwide/

www.ekato.com

922-01-049/200/11.2017• More than 80 Years of Experience• Highly Developed and Proven Equipment• State of the Art Design• Highest Equipment and Process Availability