Ammonia converter comprising a tubular inner wall

Installation process for the internal components of a recipient of an ammonia converter comprising radial flow catalyst zones, the recipient comprising an outer shell, according to which said outer shell is installed vertically, after which an inner tubular wall is installed in said shell, catalyst zone by catalyst zone, using a tubular system,

• wherein the tubular system is a dual duct tubular system comprising a plurality of tube sections with gastight walls and filtering media, with each tube section having a side contiguous to a convex-shaped filtering media to form a duct, one end of said filtering media being open, and the other being closed and gastight, with the base of each of said tube sections being fixed to a slot in a flat, with the end of said filtering media in said base being obstructed by the solid part of said flat, each flat being designed such that it is mounted on the outer periphery of a catalyst bed support plate,
• the installation process comprising:
• in the outer shell, catalyst zone support plates are installed, with a hole in the centre to allow central components to pass through, and comprising a closable opening that is sufficiently large for a person to pass through,
• a part of the dual duct inner tubular wall corresponding to the lower catalyst zone is installed by fixing the tube sections of said wall, each equipped with their respective filtering media, to form a circle on the outer periphery of the catalyst zone support plate, the tube sections being installed vertically against the inner wall of the outer shell, the filtering media facing the inside of the recipient, and the installation of the inner tubular wall is continued by successively installing the tube sections of each catalyst zone in the same way, moving up to the top of the recipient, the tube sections from one catalyst zone to the next being connected such that they are gastight using auxiliary connection devices.