Abstract: A fuel inlet assembly for a fuel reactor which has an inner shell mounted coaxially within an outer shell, which is closed at one axial end, the outer shell having an inlet for introducing combustion air into the annular space between the inner and outer shells, the other end of the inner shell being spaced from the inlet assembly which is mounted at the other end of the outer shell, the fuel inlet assembly including a base plate which is mountable on said other end of the outer shell, and having a fuel inlet aperture therein.

Abstract: A heater for heating a process fluid in which a cylindrical main chamber has a number of high intensity burners mounted therein to project products of combustion into the main chamber in a direction transverse to the axis of the main chamber. An annular secondary chamber surrounds the longitudinal walls of the main chamber, a first set of heat exchanger tubes being provided in the main chamber and a second set in the secondary chamber. Gases flowing from the burners pass over the first set of heat exchanger tubes, and then through at least one inlet to the secondary chamber, where they pass over the second set of heat exchanger tubes and out through a flue outlet at the top. A refractory shield may be provided adjacent the burners to guide the gases from the main chamber into the secondary chamber, and a further heat shield may be provided between the main chamber and the secondary chamber.

Abstract: An improved access port structure for a vessel, such as a coal gassification furnace, in which a closure member is mounted for movement, on the vessel to open or close an opening, a means of providing a steam vortex flowing into the opening to prevent the escape of gases from the vessel, and an interconnection to the steam supply to assure that the vortex is operating prior to the opening of the closure member.