Expansion joints for exhaust gas cleaning (Scrubber)
Belman has vast experience in design and manufacture of Expansion Joints for exhaust gas cleaning (scrubber). Exhaust gas cleaning systems are also known as scrubbers, scrubber systems, wet gas scrubbers, exhaust gas scrubbers among many other designations. No matter the designation, it has the same purpose; to control air pollution by cleaning the exhaust gas. Belman delivers Expansion Joints that ensure ship owners, shipyards and maintenance crew smooth, optimum and reliable operation their exhaust gas cleaning systems in order to meet the emission limits of allowable emission in low emission zones.
Belman has extensive experience in the design and manufacture of Expansion Joints for Exhaust Gas cleaning systems onboard:
- Container ships
- Cargo vessels
- Bulk carriers
- Tankers
- Cruise ships
- Passenger ships
No matter the application, Belman based on our extensive experience expertly can design, manufacture and test Expansion Joints for you.
Design range and scope of supply within Expansion Joints for Exhaust Gas Cleaning (Scrubber)
Diameter, installation length and design criteria of Expansion Joints for exhaust gas cleaning (scrubber) can be changed upon customer’s request and are available in:
DIMENSIONS:
For this application:
Typically DN 80 – 2.000
Belman general design size range:
DN 25 – 12.000
PRESSURE:
For this application:
Up to 0,5 barG
Belman general design pressure range:
full vaccum up to 150 barG
TEMPERATURE:
For this application:
+550°C / +300°C
Belman general design temperature range:
-169°C to +1000°C
MATERIALS:
For this application:
1.4571, 1.4539, 1.4404, 1. 4410,
254 SMO, Alloy 59, Duplex, Superduplex
General Belman material range:
All austenitic stainless steels and high alloyed steels
DESIGN CODES:
EN 13445, EN 13480, EN 14917
ASME VIII, div.I, ASME B31.3
ASME B31.1, EJMA, AD 2000
and others on request
TESTS:
Radiographic examination (X-ray), Helium leak testing, Pressure test, Air test, Dye penetrant test, Magnetic particle examination and many more.
Inspected by: DNV, BV, RINA, NK, KRS, Lloyd’s Register and many more.
EXPANSION JOINTS FOR
EXHAUST GAS CLEANING SYSTEMS (SCRUBBER)
CASE STORIES
SCRUBBER EXPANSION JOINTS
Expansion Joints for exhaust gas cleaning (Scrubbers) for a passenger ship. Expansion Joints for Scrubbers are often made from 254 SMO.
URGENT DELiVERY
A Bulk carrier was in urgent need for a replacement Expansion Joint for their scrubber system. Belman helped out by offering extremely short delivery time.
ALLOY 59 WAS THE SOLUTION
In some situations, austenitic steels and 254 SMO is not resistant to the media in Scrubber system. In those cases, Alloy 59 is the solution.
MAN Diesel & Turbo • MSC • Dresser-Rand • Kawasaki • Wärtsilä Gas Solutions • Samsung Heavy Industries • Peter Brotherhood • DFDS • Drydocks World • Mærsk • Royal Caribbean Cruise Lines • Hyundai Heavy Industries • IHI Europe • Langh Tech • TORM • Baltec Marine • Fayard • AS LTH Baas • U.N. Ro-Ro Isletmeleri •
YARA • Pure-Teq A/S • ME Production • CMA CGM • Dream Cruises • Stena • Southern Route Marine • SPX • Sembcorp Marine • Matson • Navios • Jubilant • Breeze Marine Group • Finnlinnes • P&O • Eastern Mediterran Maritime • Chantier de naval marseille • Grandi Navi Veloci • Grimaldi Lines •
TECHNICAL DESCRIPTION
Belman Expansion Joints for exhaust gas cleaning (scrubber) are typically installed in various exhaust cleaning system types on board marine vessels, such as:
- Cruise liners
- Container ships
- Ferries
- Cargo ships
- Freighters
- Passenger ships
- Oil tankers etc.
The installation of a scrubber can generate different movements and requirements for low nozzle loads on the scrubber, therefore the use of Expansion Joints plays an important role in protecting the scrubber and connected equipment against these movements/loads. The Expansion Joints for exhaust gas cleaning (scrubber) are therefore placed at different locations around the scrubber. No two scrubbers look exactly the same and are designed and manufactured in many different ways. The Expansion Joints are often installed before and after the scrubber. In most cases they are positioned at the exhaust inlet and outlet as well as the process water inlet and outlet.
Both new and retrofit
Belman designs and manufactures Expansion Joints for both new build and retrofit projects. Our competence and expertise is in the design and manufacture of customised Expansions Joint solutions with short lead times.
Belman designs and manufactures a wide range of Expansion Joints for Scrubber applications. Type and size of Belman Expansion Joints for exhaust gas cleaning (scrubber) are determined by the dimension of the scrubber and its piping/duct work. Furthermore, the shape of piping on scrubber inlet and scrubber outlet and the design and type of the scrubber determines the type of Expansion Joints for exhaust gas cleaning (scrubber) needed. The design of the Expansion Joint is specified by the amount of movements, the media and the operating parameters in the scrubber system.
Design
For most applications the Expansion Joints used are single bellow or double bellow Expansion Joints with loose flanges. They are mainly suitable for absorbing axial movements. The designs mainly used are:
SINGLE BELLOW
with loose flanges
This type aborbs axial movments in the scrubber system. Other connection ends are available on request.
DOUBLE BELLOW
with loose flanges
Double bellow with middle pipe. This type absorbs both axial and lateral movements. Other connection ends are available on request.
DOUBLE BELLOW
with loose flanges
Double bellow with middle pipe made from bellow material. This type absorbs both axial and lateral movement. Other connection ends are available on request.
In most projects Belman customise the Expansion Joints for Exhaust Gas cleaning systems (scrubber). The Belman engineering page illustrate how we do this.
The media and the operating data of the type of process/scrubber determine the material requirements for the Expansion Joints. Usually the Expansion Joints installed before the scrubber are made from stainless steel (AISI 316, AISI 321 or the like) and the Expansion Joints installed on after the scrubber from higher alloyed chloride resistant materials (254 SMO, 904L, Duplex or the like). The exhaust gas that is lead into the scrubber is dry and heated thus stainless steel is sufficient. When the media exits, the scrubber it has been cooled and washed therefore it can be wet/humid and may be acidic. For these reasons, the Expansion Joint is made from higher alloyed chloride resistant materials. Some scrubber constructions may encounter wash water back flow, that has to be considered in the choice of material for each Expansion Joints. Furthermore Expansion Joints may have to be designed with inner sleeves due to high media velocities and choice of material will be that of the bellow.
To sum up materials used are:
For Scrubber outlet typically:
- 1.4547 (254SMO)
- 1.4539 (904L)
- Duplex
- Superduplex
- Alloy 59
For Scrubber inlet typically:
- 1.4571
- 1.4404
- 1.4410
Generally Belman offers Expansion Joints in all types of materials on request.
MORE INFORMATION ON MATERIALS
Belman has seen many situations were the vessels are struggling with unplanned stops due to leakages on the Expansion Joints in their scrubbers systems. As the Expansion Joints are a wearing part the prolems will show first here. To help clients Belman has made a case study on material selection for scrubbers, as well as a video explaining this issue:
VIDEO
MATERIAL ISSUES IN SCRUBBERS
CASE STUDY ON
MATERIAL SELECTION FOR SCRUBBERS
INNER SLEEVES
Some scrubber Expansion Joints will due to the flow velocity require installation of an inner sleeve.
Why are inner sleeves important?
Expansion Joints are often introduced to the pipe system in order to introduce a flexible element for the compensation of thermal expansion with the consequence of being the stress relief of the system. In order to achieve the flexibility the Expansion Joint is usually produced with a material thickness, which is considerably less than the rest of the components. This however results in making the Expansion Joint vulnerable in some areas that is why in certain applications, it is necessary to mount a protective inner sleeve, which can ensure the integrity of the Expansion Joint.
Why use inner sleeve on Scrubber Expansion Joints?
Inner sleeves are used for the internal protection of the bellow and are used in several cases, but for scrubber Expansion Joints they serve the purpose of protecting the bellow from high media velocity and possible particles in the media resulting in erosion of the thin walled bellows.
How do the inner sleeves look? (Two types of inner sleeves)
If inner sleeves are needed for scrubber Expansion Joints, typically two types of inner sleves are used:
Flaired inner sleeve
This type is used when the scubber Expansion Joint is designed with loose flanges.
Welded inner sleeve
This type is used when the scrubber Expansion Joint is designed with welded flanges or welding ends.
What is the inner sleeve made of?
The inner sleeve is typically made from the same material as the bellow. As the inner sleeve will be in touch with the media, the material selected has to be resistant towards the media.
How is it designed?
The question of whether an inner sleeve is required or not is determined by the media, the number of plies in the bellows and the flow velocity. Information to Belman concerning flow velocity and type of media is very important when designing the Expansion Joints, as this forms basis for the calculation of the inner sleeve thickness/type.
Expansion Joints for different Exhaust Gas Cleaning (Scrubber) designs
No matter what the design, Belman excels in customizing the Expansion joints for exhaust gas cleaning (scrubber) for the exact scrubber specification, such as demonstrated in this passenger ship project. The Expansion Joints for exhaust gas cleaning (scrubber) are typically made from 1.4541 or 1.4404 (most often located at the inlet) and 254 SMO or duplex or super duplex – these materials are often specified when sea water is used for cooling (most often located in the outlet). The media and the operating criteria of the process/scrubber of course determines the material of the Expansion Joints for exhaust gas cleaning (scrubber). The exhaust gas that is fed into the scrubber is dry and heated and therefore AISI 316L is sufficient. However, when the media exits the scrubber it has cooled and can be wet/humid with acidic properties. For these reasons the Expansion Joints for exhaust gas cleaning (scrubber) are made from 254 SMO and since the media in most situations has the possibility to run-back the Expansion Joint is further equipped with an inner sleeve also made from 254 SMO.
Belman is known for high quality products and therefore our quality control is a fundamental part of our business. All processes during production designed by the Belman quality engineers, is strictly follow and implement according our procedures and instructions and carefully inspected by Belman quality inspectors. All checks and inspections are done according to the strict prevailing Belman quality control procedures which is part of the Belman ISO 9001 quality management system approved by DNV.
ITP & Test
Inspection test Plan generated by the quality management system makes sure that each step of manufacturing has the appropriate inspection points such as Hold and Witness points.
Based on manufacturing code, project specification, application, media, and eventual ship classification rules Belman performs a large variety of quality tests including destructive, non-destructive testing and proof testing. All tests can be witnessed by the 3rd part based on the customer and classification requirements.
- Destructive test: such as life cycle test and burst test to validate the design, i.e., vessels and offshore platforms
- Non-destructive test such as Visual testing, dye penetrant test, Radiography examination, Magnetic testing, ultrasonic testing, hardness testing and PMI for all applications
- Proof tests: leak test with air, leak test with helium and former gas, hydrostatic pressure test for all application
INSTALLED
WE HAVE ENGINEERED
EXPANSION JOINTS SINCE 1994
This enable us to find you the optimum solution to your piping system.
Belman is known for helping clients in urgent need
A stop in the middle of the ocean due failures on the system is critical, and furthermore is extra waiting time in ports and yards for components. Belman’s fast track service is the solution for clients that have unplanned shutdowns, leaking Expansion Joints, part failures and other such problems. In such circumstances clients need extraordinary short delivery times, emergency service or additional assistance. If express delivery is required, we ensure the shortest possible delivery time on Expansion Joints. Our delivery response is in accordance with the customer’s delivery time needs and the complexity of the design. Get in touch to learn more about the shortest fast track delivery time Belman can provide for your project.
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