Method and device for the homogeneous charging of solid catalyst particles into a tubular reactor

摘要

Homogenous charging of particles of solid catalyst (6) into a tubular reactor containing vertical tubes (2) opening at their top through a perpendicular tube plate (3) which reunites them, uses a charging system which ensures a homogenous rain of particles onto the whole surface of the plate. Around the periphery of the plate a first cylindrical wall (11) with a diameter similar to that of the plate is placed so all the charging orifices of the tubes are inside. The particles are charged homogenously within this cylinder until the tubes at the perimeter of the tube plate and near the cylindrical wall are full. A second cylindrical wall with a smaller diameter is placed on the tube plate so the tubes which are full are outside the second wall and those which are not are inside it. The homogenous distribution is restarted until the tubes nearest the second cylinder are full, and the cycle is repeated with diminishing diameter cylinders each time separating the full tubes from those which are not. Also claimed is a device to carry out the above process using a series of cylindrical walls of diminishing diameters to fill the tubes successively from periphery to centre.