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Pressurized oil and gas loading/unloading/transfer systems

Engineering company ENCE GmbH brings to your attention a full range of the equipment for liquid products transfer:

Apart from being efficient, the offered equipment proves to be extremely reliable and safe, it can operate both in Arctic winter and in sandy storm or tropical monsoon rain. Ranging from elementary units to complex solutions involving automatic emergency release system, vapor removal and high-quality monitoring system, our loading/unloading arms ensure high efficiency, safety, non-failure operation, the highest quality and reliability. We select solutions dependent on the properties of transferred product, and completely in accordance with the Customer’s specified requirements.

European production, researches and development, certified quality assurance system, on-call service and erection crew available at any time, spare parts service throughout all the CIS countries, branching network of representative offices, service centers and subsidiaries, secure the first class service to our Customers exactly when it is needed.

For purchasing please contact our technical department and send your inquiries to the following e-mail address: info@ence.ch.



Marine loading arms

Application: oil and gas products loading/unloading by river transport.

Technical characteristics:

  • from DN 100 up to DN 250
  • from PN 10 up to PN 40

Design/Materials:

  • Carbon steel
  • Low - temperature steels
  • Alloy steels

Transferred liquids permissible temperature range: -50 to +200°C

Sizes and technical characteristics:


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Design

  • Fully balanced with independent primary and secondary arms counterweights
  • Self-supporting structure
  • Easy control due to low weight
  • Welded/flanged swivels
  • for all products loading/unloading, such as oil products, chemical fluids, liquefied gas
  • Gland seals in Perbunan, Viton, PTFE or specific materials

Accessories

  • range warning system
  • drain connections
  • Insulating flange
  • Manual quick couplers
  • Wash line
  • Nitrogen purge line
  • Vacuum breaker

Marine loading arm, type St-1

Application: marine tanker ships loading/unloading.

Technical characteristics:

  • Size from DN 100 up to DN 400
  • Pressure range from 10 bar to 40 bar
  • Carbon, low-temperature, alloy steel
  • T from -50 to +200°C
  • Customized solutions offered upon request

Sizes and technical characteristics:


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Marine loading arm, type St-2

Application: loading/unloading of marine tanker ships with deadweight up to 250.000 tons in areas with large tidal range.

Technical characteristics:

  • DN from 200 to DN 400
  • Pressure stages from 10 bar to 40 bar carbon, low-temperature, alloy steel
  • T from -50 to +200°C

Size and technical characteristics:


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Marine loading arm, type St-3

Application: loading/unloading of cryogenic products down to -104°C, when the product pipe is designed for internal pigging, made from specific materials or with internal lining.

Technical characteristics:

  • DN from 100 to DN 400
  • Pressure range from 10 bar to 40 bar
  • Carbon, low-temperature, alloy steel and other
  • T from -104 to +200°C

Sizes and technical characteristics:


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Floating suctions

Application: used for liquids withdrawal from tanks.

Size range: from DN 50 to DN 500

Seal material: PTFE VITON

Material:

  • Aluminum
  • Stainless steel
  • Carbon steel


Swivels

Application: Rigid pipelines can be rendered movable where the use of a hose is unacceptable.

The pipelines gain the advantage of 360° rotation when swivel joints are used.

Optional design:

  • Light alloyed swivels for medium duty
    Basic application: loading stands for road and rail tankers and floating suctions.
  • High-tensile swivels for heavy duty
    Basic application: all types of flexible pipelines
  • Pressurized swivels for heavy duty
    Basic application: all kinds of flexible pipelines, in which products can damage swivel mechanism
  • Swivels for heavy duty with heating
    Basic application: transfer of liquid products losing fluidity at normal ambient conditions

Size and technical characteristics

The swivels offered can be supplied in the baseline configurations shown below (see Picture).







Upper loading station complete with measurement system

Application

  • Oil products and refined oil products
  • Food and pharmaceutical industry
  • Chemical industry
  • Separate loading units
  • Liquid bulk terminal complex
  • Rail and car tankers
  • Liquid and natural gas


Bottom loading station parallel bar

With 6 swivels and gas spring

Size and technical characteristics


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Product line units material:

Product line units material Carbon or alloy steel, inner coating is possible
Swivel seals material Perbunan, Viton or PTFE
Diameters DN 50, 80, 100
Balancing Spring balancer
Nominal pressure Max 40 bar
T range -45 to +300°C
Packaging
  • Emergency release system
  • Wash line and pressure relief line
  • Flange connection safety device

Usage example:


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Bottom loading station

Application: this type of equipment is meant for loading highly volatile products for which it is necessary to ensure vapour return.

The station is used for bottom loading/unloading of tank cars with flange or coupling connection.

The long-range loading device is applicable where the tank car connection flange cannot be accurately positioned.

Dimensions and technical data


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Dimensions and technical data
  Dims Balancing method Product feed
Gas line DN50 Spring cylinder Horizontal
Products line DN80
Other dimensions acc. to requirements.

Materials and technical data
Products pipeline units Carbon steel, alloy or low temperature steel
Seals Buna, Viton, or PTFE
Nominal pressure max. 40 bar, dependent on cut-off valve
Execution temperature -45 to +300°C



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Auxiliaries:

  • 6th swivel
  • Parallel bar
  • Gas spring-balancer group for "B"-arm
  • Emergency release unit


Liquefied gases loading/unloading arm

Application: top loading or unloading of liquefied hydrocarbon gases.

The arm is connected with the tank through a specially designed for Russian railroads grip. This grip ensures fast and robust connection with angle dispensing valves of the tank.

Technical data

Diameters Materials Seals Temperature zone
DN 100, 80, 50, 40 Steel/alloy steel PTFE
Special materials
-57 to +110°C
Other materials upon request

The offered system is a cost-effective and reliable solution for loading/unloading of liquefied hydrocarbon gases. Unlike dispensing hoses, rigid pipes help avoid breaking, sagging and condensate accumulation in there.



Loading with vapour return hose

Application: loading of hydrocarbons, toxic and aggressive liquids.

This system includes a long reach loading arm and a vapour return hose.

Loading through the vapour return hose makes the loading procedure more cost-effective as there is neither product emissions and nor personal injury nor pollution of environment.

Dimensions and technical data


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Standard technical data

DN Product line DN Vapour return Seals Application area Design Accessories
50, 80, 100, 150 50, 80, 100, 150 NBR, EPDM, PTFE, Special materials
  • High or low temperatures (as requested)
  • Steam/thermal oil/electrically heated product line
  • Suitable for inner brushing
  • acc. to WHG
  • acc. to VbF (international)
  • sealing plate
  • cone
  • telescopic drop pipe
Other diameters and materials are available upon request.

Due to small sizes the unit can be used where the rooms are with low roof height.



Parallel loading arm

Application: loading arms with vapour return are used mainly for loading toxic and aggressive fluids, oil products.

The unit is a combination of two devices:

  • Product loading arm
  • Vapour return line

Dimensions and technical data


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Standard technical data

DN product line DN vapour line Seals Application area Design Accessories
50, 80, 100, 150 50, 50, 80, 100 NBR, EPDM, PTFE, Special materials
  • High temperature design up to +300°C
  • Steam/thermal oil/electrically heated
  • Low temperatures upon request
  • Suitable for inner brushing
  • acc. to WHG
  • acc. to VbF (international)
  • sealing plate
  • cone
  • telescopic drop pipe
Other diameters and materials are available upon request

The design of the vapour return line with swivel joints is easier in operation than that of a vapour return hose.



Bottom hose loading station

Application: simultaneous loading of oil products into several tanks.






Dimensions and technical data


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Standard Petroleum Product Loading Arms


The package includes:

  • Loading position regulator
  • Parallel bar

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Dimensions and technical data


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  DN   DN Counterweight
80, 100, 150,
50
80, 100, 150,
50
Spring counterweight
80, 100, 150,
50
80, 100, 150,
50
Design: DN 50 with ball valve instead of acceleration valve, control lever with return spring
Materials of product carrying parts
Upstream shut-off valve carbon steel
Shut-off valve spheroidal graphite iron
Downstream shut-off valve Aluminum
From connecting flange to end pipe swivel joints carbon steel
Drop pipe Aluminum
Swivel joint sealings Viton
PN upstream shut-off valves Max 19 bar
Nominal temperature from -10 to +50°C


Standard Loading Arms For Chemicals and Petroleum Products


Application example

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Application: top loading of road or rail tankers through the manhole

Standard Loading Arms


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Petroleum products Chemicals
  DN Counterweight DN Counterweight
80, 100, 150, 50 Spring counterweight 50, 80, 100 Spring counterweight, Balance
80, 100, 150, 50 Spring counterweight, Balance
* DN 50 is available with ball valve only
Materials of product carrying parts
  Petroleum products Chemicals
From connecting flange to valve steel Carbon or alloyed steel
Shut-off valve spheroidal graphite iron  
From shut-off valve to the end of drop pipe Aluminum  
Swivel joint seals Perbunan, Viton (PTFE is not available) Perbunan, Viton, PTFE
Nominal pressure (upstream shut-off valves) Max 19 bar Max 40 bar


Standard Loading Arms for Mineral Oil or Chemical Products


Standard Loading Arms

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Application: top loading of road or rail tankers through the manhole, primarily designed for the cases when the tanker manholes cannot be accurately positioned.

Dimensions and technical data


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Petroleum products Chemicals
  DN Counterweight DN Counterweight
80, 100, 150, 50 Spring counterweight 50, 80, 100 Spring counterweight, Balance
80, 100, 150, 50 Spring counterweight, Balance
Materials of product carrying parts
  Petroleum products Chemicals
From connecting flange to valve Steel Carbon or alloyed steel
Shut-off valve Spheroidal graphite iron  
From shut-off valve to the end of drop pipe Aluminum  
Swivel joint seals Perbunan, Viton (PTFE is not available) Perbunan, Viton, PTFE
Nominal pressure (upstream shut-off valves) Max 19 bar Max 40 bar


Standard Chemical Loading Arms


Application example

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Application: top loading of road or rail tankers through the manhole, primarily designed for the cases when the tanker manholes cannot be accurately positioned.

Dimensions and technical data


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  Counterweight   DN
Spring counterweight, Balance 50, 80, 100
DN 150 upon request
Spring counterweight, Balance
Materials of product carrying parts Accessories Nominals
Device Carbon or alloyed steel (low-temperature steel is available)
  • parallel guide
  • loading position regulator
Pressure: max.40 bar upstream shut-off valves
Swivel joint seals Perbunan, Viton, PTFE Temperature: from -50 up to max.300°C


Dimensions and technical data


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  Counterweight   DN
Spring Balance 50, 80, 100, 150
Spring Balance
Materials of product carrying parts Accessories Nominals
Loading arm Carbon or alloy steel (low-temperature steel is possible)
  • emergency release system
  • relief or nitrogen purge line
  • flange connection detector
  • vapor return hose
Pressure:
Max. 40 bar upstream shut-off valve
Swivel Joint seals Perbunan, Viton, PTFE Temperature:
-50°C to +300°C




Standard Bottom Loading/Unloading Arms

Application: bottom loading/unloading of chemical and oil products from road or rail tankers.

Dimensions and technical data


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Materials and technical data
Materials of product carrying parts Carbon steel or alloy steel, internal lining is possible
Seals Viton or PTFE
Balancing method Spring counterweight
Nominal Sizes DN 50, 80, 100
Nominal pressure max. 40 bar up to shut off valve
Design temperature -50 to max 300°C
To be equipped with: Relief line or purge line. Flange connection detector

Accessories:

  • Sixth swivel joint
  • Emergency release system
  • Relief and purge line
  • Flange connection safety device




Bottom Loading Station

Application: bottom petroleum product loading to road tankers.

System features:

  • Simultaneous loading of a number of tank inlets
  • Connection flexibility
  • High speed loading
  • API dry-break coupling
  • Long operation life
  • Various materials are available

Dimensions and technical data


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Application example:

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Heavy-duty deep hardened ball race


Loading Arm for Chemically Aggressive Fluids

Application: closed top loading/unloading of highly aggressive acids and alkali of strong concentration into road or rail tankers.

Features:

  • Leak-proof
  • product carrying components are polymer lined




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Technical description
1
2
3
4
5
6
7
Standpost
Inlet flange
Plummer block
Supporting structure
"F"-arm
Swivel joint
"A"-arm
8
9


10
11
12
Spring cylinder
Additional swivel joint for balancing of tanker inclinations
"B"-arm
Ball valve
Connection flange, plastic material also possible
13

14
15
16
17
Vapor return hose, in plastic or stainless steel with lining
Cone (plastic)
Filling pipe (plastic)
Overfill safety device
Vapor removal

Technical data (standard)
DN Counterweight Design Materials of product carrying components
50
80
100
150
  • spring cylinder
  • balances
  • pneumatics
  • hydraulics
Temperature -50°C bis +150°C Loading arm Carbon steel, alloy steel
Filling pipe – open loading Plastic
Pressure 10 bar Gland seals PTFE
Lining PTFE, PTFE electrically conductive

Inlet flange in the upper position is available. Other designs are possible as well. Alternative variations of the loading arm may have protective casing.



Spot Loading System

Application: it is a fully automated system for chemical product spot loading with manhole detection.

Application example:

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Dimensions and technical data

Technical description:

The position of the manhole will be detected by sensors, and the drop tube will drive automatically to the manhole. The system is complete with Control system of an overfill safety device. The CPU includes a PLC system.

Accessories:

Technical data (standard)
1
2
3
4
5
6
7
8
Hydraulic cylinder
Drop tube
Proximity switch
Manhole
Proximity switch
Hydraulic cylinder
Position sensor
Hydraulic cylinder
9
10
11
12
13
14
15
16
Proximity switch
Hydraulic motor
Control system of Overfill safety device
PLC System
CCD-Video camera
Modular camera detection
Proximity switch
Control panel
17
18
19
20
21
22
23
Ultra sonar sensor 2 pcs
Emergency manual operation
Proximity switch
Hydraulic motor
Proximity switch
Proximity switch
Positions sensor



Bottom Loading Arm with Internal Heating Lance

Application: bottom unloading of high-viscosity petroleum products from rail way tanks.

Dimensions and technical data


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Technical data
Sizes Materials Seals Temperature range
External line DN200, DN175
Internal line DN50, DN40
Steel NBR, FPM, PTFE, special materials -50 to +100°C, higher or lower temperature on request


Application example:

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Heavy-duty flame hardened ball race

Bottom Unloading Arms

Application: bottom unloading of chemical and light petroleum products and railway tanks

Dimensions and technical data


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Technical data
Sizes Materials Seals Temperature range
DN 150 Steel/Aluminium NBR, FPM, PTFE, special materials -50 to +50°C higher or lower temperature on request


Example application:

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Heavy-duty flame hardened ball race



Top unloading arm with heating lance for rail cars

Application: top unloading of high-viscosity petroleum products from railway tanks

Dimensions and technical data


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Technical data


By unloading through the nozzles at the end of the drop pipe hot product will be sprayed into the vessel. Thereby the frozen product in the vessel will be warmed up and can be sucked off through the product pipe. The drop pipe is turnable so that the whole railway tank can be reached with hot product.

It is possible to fasten a movable holding bar (or a covering plate) for a level controller. The up and down movement of the A-length is provided by a pneumatic or hydraulic cylinder.

Application example:

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Heavy-duty flame
hardened ball race


Swivel Joints

Application: loading/unloading of petroleum and chemically aggressive products.

Technical data:

  • PN 10 – 40 bar
  • DN from 50 to 500

Materials:

  • Carbon steel
  • Stainless steel
  • Aluminum, special steels

Seal materials: various types of polymer and rubber.

Dimensions and technical data



Grounding device

Application: vessel and railway tank earthing prior to fluid loading/unloading

Technical data:

  • Design: explosion-proof Exd [ia] ia II C T6 intrinsic safety electronic board
  • Protection index: IP 67
  • PC programmable
  • Working temperature: from -40 to +60°C







Heating Systems

Application: heating of swivel unloading/loading arms for petroleum products at lower ambient.

Heating cable is attached along tubes and elbows. Swivels are bridged.

Possible Designs:

  • Electric heating
  • Trace heating
  • Steam jacket heating

Dimensions and technical data



Electric Heating


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Trace Heating Systems

Trace heating systems are used for products with higher temperature range loading (see table). Two heating tubes (inlet- / outlet line) are attached along the loading arm. Rotating elements are connected by waffle-like alloy steel hoses. Swivels are bridged by alloy steel hoses.

Trace Heating
Diameter Operating pressure Seals Max. product temperature Connecting flange
DN 15 max 20 bar Viton, PTFE 100°C DN 15

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Trace Heating

Jacket Heating Systems
Diameter Operating pressure Seals Max. product temperature Connecting flange
DN 15 (radial clearance 10 mm) Max 20 bar Viton, PTFE-compound 200°C
250°C
DN 15

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