Abstract: A pipe part (100) for conveying a solid particulate material, comprising an outer tubular element (1) stretching along a longitudinal axis (A) and having first (9) and second (12) sections axially displaced from each other. An inner tubular element (20) is disposable inside the outer tubular element (1) and adapted for longitudinally conveying the solid particulate material from one end to another end. The inner tubular element (20) comprises an aeration-fluid-permeable wall part (23), and is sealingly connected with—and flexibly supported by—the first and second sections (9,12) to form an aeration fluid distribution chamber (40) between the first and second sections (9,12) and the inner (20) and outer (1) tubular elements. The aeration fluid distribution chamber (40) is provided with an aeration fluid inlet (15) to define an aeration fluid flow path (19) between the aeration fluid inlet (15) through the aeration-fluid-permeable wall part (23) via the aeration fluid distribution chamber (40).

Abstract: A reactor vessel for performing a steam reforming reaction having a vessel inlet for natural gas and steam; a vessel inlet for a hot gaseous medium; a vessel outlet for the steam reforming product; and a reactor space which is a bed of steam reforming catalyst, which reactor space inlet is fluidly connected to the inlet for natural gas and steam and at its outlet end fluidly connected with the outlet for the gaseous product; wherein inside the catalyst bed a passageway is provided fluidly connected to the vessel inlet for the hot gaseous medium for passage of hot gaseous mixture counter currently to the flow of reactants in the catalyst bed.

Abstract: The invention pertains to a vessel (1) for storing particulate matter, such as pulverised coal or fly ash, comprising a main part (2) and, at its bottom portion, at least one discharge device (3), which comprises a converging outer shell (10) and a permeable, converging inner shell (14) positioned in the outer shell (10), the discharge device (3) being connected to the main part (2) by means of a first flange (9) at or near the lower rim of the bottom portion of the main port (2) and a second flange (11) at or near the upper rim of the outer shell (10). The inner shell (14) is secured to the inner wall of the outer shell (10) of the discharge device (3), preferably to the inner wall of the second flange (11). Thus, the number of gaskets is reduced and/or the positioning of the inner shell becomes less critical.