Assembly For Collecting A Gaseous Fluid

Abstract: The present invention relates to an assembly for collecting a gaseous fluid, suitable for being arranged in a reaction section comprising a catalyst bed of a radial reactor (1'), and comprising a tubular grate (9), an external collection tube (10); and - an internal collection tube (11), the internal tube being arranged in the external tube, which itself is arranged in the tubular grate, wherein the tubes and the grate are arranged along the same axis, each of the internal and external tubes comprising openings, wherein the space between the external and internal tubes (10, 11) forms a first collection zone (Z2), and the space in the internal tube (11) forms a second collection zone (Z1), wherein each of the collection zones (Z1, Z2) is closed at one of its ends and opens at the other of its ends into a gaseous effluent outlet means provided with a removable closure means.

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