| 主权项 |
1. A device for densely filling catalyst specially adapted to a steam reforming exchanger-reactor consisting of a plurality of bayonet tubes enclosed in a shell, the catalyst being constituted by particles occupying at least part of the annular space (4) included between an internal tube (5) and an external tube (6), the assembly of these two tubes constituting a bayonet tube, the width of said annular space being in the range 30 mm to 80 mm, and its height being in the range 10 to 20 metres, the catalyst particles being in the form of cylinders with an approximate height of 10 mm to 20 mm and an approximate diameter of 10 mm to 20 mm, said annular space (4) being divided into two or three substantially identical horizontal sectors, each sector extending the entire length of the bayonet tube, by means of a “centralizer” system disposed at the head of the annular space, each sector being equipped with its own system of deflectors, each system of deflectors consisting of:
a series of deflectors (7) distributed in a regular vertical manner along the annular space (4) and separated by a vertical distance in the range 50 cm to 150 cm; said deflectors (7) being connected together via a chain (8) which winds around a spooler (10) located outside the tube to be filled, and the particles of catalyst being contained in:
a central feed hopper (1) for delivering the particles onto a conveyor belt or a shaker conveyor (2) supplying the annular space (4), via:a funnel (3) via which the particles flow into the interior of the annular space (4). |
