Abstract: Controlling a fluidized bed coal combustor by sensing certain variables and thereby controlling other variables.

Abstract: A process for desulfurizing fuel wherein a fuel is introduced and burned in a first fluidized bed and wherein a second fluidized bed is utilized to treat the products of combustion from the first fluidized bed.

Abstract: A fluidized combustor is provided with a burning zone having cooling passages in its upper portion and a lower portion beneath said passages yet deep enough so that material therein may be operated in a fluid bed combustor mode with cooling by fluidizing excess air, a separate zone being provided for selective storage therein of materials transferred from the burning zone.

Abstract: A fluid bed reactor in which a gas is reacted with small particles of solid, rubbed off in the fluid bed from larger particles of solid.

Abstract: Pyrolyzing pulverized coal to form char and volatiles, separating the char from the volatiles, burning the char in heat-transfer relationship with a stoichiometric excess of air, forming thereby ash and a mixture of gases, the excess of air being chosen to produce in the ash a temperature below the fusion temperature thereof, separating the mixture of gases from the ash, and thereafter burning the volatiles in the mixture of gases.

Abstract: A pressure regulator comprising a body having an inlet, a first channel, an outlet for passage of gas therethrough and a chamber, a valve located within the channel between inlet and outlet for regulating outlet pressure, the inlet being in effective communication with the chamber through the valve, and a slide contacting the valve, reciprocally moveable within the chamber of the body so as to open or close the valve, biased in a direction tending to open the valve, and responsive in a direction tending to close the valve to pressure of gas which has passed through the valve into the chamber, featuring in one aspect a seal located between the body and slide to prevent the escape of gas therebetween, the seal having an annular base and an annular lip resiliently connected to the base, the base and lip forming a pocket for the gas so that the pressure of the gas helps to bias the lip outward from the base to provide an improved sealing effect, and featuring in another aspect a valve having a reciprocally moveab

Abstract: A chemical reactor with a first upstream fluid bed which primarily burns coal and a second downstream fluid bed which primarily desulfurizes.

Abstract: Pyrolyzing pulverized coal to form char and volatiles, separating the char from the volatiles, burning the char in heat-transfer relationship with a stoichiometric excess of air, forming thereby ash and a mixture of gases, the excess of air being chosen to produce in the ash a temperature below the fusion temperature thereof, separating the mixture of gases from the ash, and thereafter burning the volatiles in the mixture of gases.

Abstract: This disclosure relates to an aerodynamic fuel combustor for generating hot gases, including means forming a mixing chamber and a combustion chamber, and a flameholder therebetween. Means are provided for admitting desired proportions of fuel gas and air to the mixing chamber to form a combustible gas under a controlled pressure; in one form, these means comprise a jet ejector. The flameholder is a vortex generator having one or more flow channels shaped to supply swirling gases to the combustion chamber. The flow channels form a substantial exit angle with respect to the axis of the combustion chamber, but not exceeding 60.degree., and are formed by airfoils terminating in bluff trailing edges of substantial area to cause eddying flow. The cooler gas molecules are centrifuged to the outside of the burning gas in the combustion chamber, thus cooling the chamber walls.

Abstract: A burner for burning a vaporizable liquid fuel comprising a cylindrical combustion chamber, the combustion chamber having an inlet and an outlet, a cylindrical vaporizing chamber, the vaporizing chamber having an inlet and an outlet, a first passage interconnecting the combustion chamber with the vaporizing chamber and serving as a mixing chamber, a second passage interconnecting the combustion chamber toward the combustion chamber outlet with the vaporizing chamber, for carrying hot combustion gases from the combustion chamber into the vaporizing chamber, a vaporizable liquid fuel inlet atomizer positioned along the axis of the vaporizing chamber to direct atomized liquid fuel thereinto, for vaporization therein of the fuel by the hot combustion gases, the atomizer being effected to support vaporization of the fuel before the same touches a wall, an air inlet at the interface of the first passage and the vaporizing chamber outlet, positioned to direct air under pressure through the first passage into the com

Abstract: A pressure regulator comprising a body having an inlet, a first channel, an outlet for passage of gas therethrough and a chamber, a valve located within the channel between inlet and outlet for regulating outlet pressure, the inlet being in effective communication with the chamber through the valve, and a slide contacting the valve, reciprocally moveable within the chamber of the body so as to open or close the valve, biased in a direction tending to open the valve, and responsive in a direction tending to close the valve to pressure of gas which has passed through the valve into the chamber, featuring in one aspect a seal located between the body and slide to prevent the escape of gas therebetween, the seal having an annular base and an annular lip resiliently connected to the base, the base and lip forming a pocket for the gas so that the pressure of the gas helps to bias the lip outward from the base to provide an improved sealing effect, and featuring in another aspect a valve having a reciprocally moveab

Abstract: The leak detector disclosed herein is of the type which detects the presence of halogen gases, such as fluorides, by the effect such gases have on the color of a flame in the presence of reactive copper. The flame is generated by a gas-fueled burner of exceptionally small and rather critical proportions, constructed so that the entire air supply for the burner may be obtained through a flexible search tube. Further, the reactive copper is provided integrally with the burner rather than as a separate element heated by the burner. The burner employs a disk-like flameholder which is proportioned to provide a stable flame despite the small size of the burner and which is itself constructed of copper so as to provide the reactive material to obtain flame color sensitivity.