Reduced-capacity moving-bed reactor with radial flow of the feedstock

A moving-bed reactor having a radial flow of a feedstock and having a gravitational flow of a catalyst comprising an upper hemispheric body (III), a lateral body (II), and a lower hemispheric body (I),

• the upper hemispheric body (III) being provided with an intake pipe (6) for the feedstock and with legs (7) for introducing the catalyst communicating with conical elements (9) that provide access to an annular zone (IIa),
• the annular zone (IIa) is located between a central collector (4) and an outer screen (3) over a radial distance of between 100 mm and 400 mm, said outer screen (3) being positioned parallel to the lateral body (II) of the reactor and at a certain distance from the latter, and the central collector (4) extending approximately along the longitudinal axis of symmetry of the reactor over the entire height of said annular zone (IIa) and continuing inside a lower hemispheric body (I),
• the lower hemispheric body (I) carries drain legs (8) of the catalyst and a drain pipe (1) for the reaction effluents, said drain pipe (1) connected to a lower end of the central collector (4),
• the outer screen (3) being supported by a supporting ring (2), which extends over the entire periphery of the lower hemispheric body (I) and which is attached to the lower hemispheric body (I), and the central collector (4) being closed at its upper end by a solid plate (5),
• wherein the upper hemispheric body (III) is connected by flanges (B3, B4) to the lateral body (II), and the lateral body being furthermore connected by flanges (B1, B2) to the lower hemispheric body (I),
• wherein the flange (B4) and the lower end of the conical element (9) are positioned at the lower end of the upper hemispheric body (III), and
• wherein the flange (B3) and the solid plate (5) are positioned at the upper end of the lateral body (II), and provides access to the annular zone (IIa).