Patent ID: 8435458
Filing Date: 2013-05-07
Classification: B01J,B23C,B26D,Y10T

Abstract:
1. A system of walls for catalytic beds of chemical reactors comprising at least one containment wall of a catalytic bed, intended for direct contact with the same, said wall having: a plurality of gas-permeable portions; and a plurality of gas-impermeable portions, wherein each of said gas-permeable portions is equipped with a plurality of slits having a size such as to allow free passage of synthesis gases but avoid the free passage of catalyst through them, wherein the plurality of slits include slits which have a greater length in the longitudinal direction, on a side intended for direct contact with the catalyst with respect to a length of slits on an opposite side of the containment wall, wherein said plurality of slits are obtainable with a milling process wherein a milling disc is used, in such a way that the side of the containment wall in which the slits have greater length corresponds to the milling cutter entrance side while the opposite side of the containment wall corresponds to the milling cutter exit side, further comprising a distribution wall equipped with gas-permeable portions arranged in spaced relationship with said containment wall so as to create an interspace with it, wherein said gas-permeable portions of the distribution wall comprises holes made in said wall and facing towards said portions impermeable to the gases of the containment wall of said catalytic bed.