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BELMAN & EXPANSION JOINTS FOR SCRUBBERS 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 are installed before and after the scrubber. In most cases they are positioned at the exhaust or process water inlets and outlets. Materials The media and the operating data of the type of process/scrubber determi- nes the material requirements for the Expansion Joints. Usually the Expan- sion Joints installed before the scrubber are made from stainless steel (AISI 316, AISI 321 or similar) and the Expansion Joints installed after the scrubber from higher alloyed chloride resistant materials (254 SMO, 904L, Duplex or similar). 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 can be wet/humid and also acidic. For these reasons, the Expan- sion Joint is made from higher alloyed chloride resistant materials. Some scrubber constructions may encounter wash water backflow, this has to be considered when choosing materials for each Expansion Joint. Furthermore, Expansion Joints may need inner sleeves due to high media velocities, in such cases the material selected will be the same as that of the bellow. Expansion Joint design For most applications the expansion joints used are single bellow or double bellow Expansion Joints with loose flanges. They are suitable for absorbing axial movements. Both new and retrofit Belman designs and manufactures Expansion Joints for both new build and retrofit projects. Our competence and expertise is focused on the design and manufacture of customised Expansion Joint solutions with short lead times. BELMAN PROVIDES Expansion Joints for both new build and retrofit for compliance
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EXPANSION JOINTS IN SCRUBBERS Expansion Joints are a vital part of scrubbers and exhaust systems. As scrubbers are available in a large range of designs, we Illustrate below where the Expansion Joints are typically used in and around scrubber systems: Sea water inlet manifold Scrubber By-pass exhaust pipeline By-pass exhaust pipeline Sea water outlet Main engine Generator Emergency engine Incinerator Auxiliary engine Boiler
