Catalyst vessel

Claim 1

IN A CATALYST CHAMBER, A SUPPORTING FLOOR COMPRISING A GRID ON WHICH A BED OF FINELY DIVIDED CATALYST IS SUPPORTED, THE FLOOR BEING POSITIONED IN SPACED RELATIONSHIP TO THE BOTTOM OF THE CHAMBER, THE CHAMBER HAVING A CATALYST INLET BELOW SAID FLOOR, SAID GRID COMPRISING A PLURALITY OF ELONGATED BEAMS EXTENDING IN SUBSTANTIALLY THE SAME HORIZONTAL PLANE TRANSVERSELY OF THE CHAMBER TO A POINT SHORT OF THE INNER PERIPHERAL SURFACE OF SAID CHAMBER ADJACENT THE ENDS OF THE BEAMS, THE BEAMS BEING LATERALLY SPACED FROM ONE ANOTHER SUCH DISTANCE AS TO FORM LONGITUDINALLY EXTENDING SLOTS THEREBETWEEN, WHICH SLOTS ARE RELATIVELY NARROW IN COMPARISON TO THE WIDTH OF SAID BEAMS, SUPPORTING MEANS ON THE WALL OF THE CHAMBER ADJACENT OPPOSITE ENDS OF SAID BEAMS AND DISPOSED IN SUPPORTING RELATIONSHIP TO SAID ENDS OF THE BEAMS, ANCHORING MEANS ASSOCIATED WITH SAID ENDS OF THE BEAMS AND THE SUPPORTING MEANS AND ANCHORING THE BEAMS IN LONGITUDINALLY MOVABLE RELATIONSHIP IN RESPECT TO SAID SUPPORTING MEANS, AND SLOT CLOSING MEANS FOR CLOSING PORTIONS OF THE SLOTS BETWEEN LATERALLY ADJACENT BEAMS, SAID SLOT CLOSING MEANS COMPRISING A PLURALITY OF STRIPS OF CATALYST IMPERVIOUS MATERIAL POSITIONED BETWEEN LATERALLY ADJACENT BEAMS AT SPACED INTERVALS LONGITUDINALLY OF SAID BEAMS THEREBY PROVIDING A PLURALITY OF SPACED OPENINGS THROUGH WHICH SAID CATALYST FLOWS FROM THE CATALYST INLET INTO THE PORTION OF THE CHAMBER ABOVE SAID FLOOR.