Abstract: A method for operating a gas turbine system using low-Btu gaseous fuel is disclosed in which air compressed in a compressor unit to obtain a compressed gas stream and low-Btu gaseous fuel and said fuel is combusted with the compressed gas stream both supplied to said combustion unit, thereby obtaining hot product gas. The hot product gas supplied thereto is expanded to drive an expansion turbine unit to generate mechanical power.

Abstract: The invention is a process for quenching a first synthesis gas mixture containing synthesis gas, molten flyash, water, and carbon dioxide and producing additional synthesis gas consisting of (a) passing the first synthesis gas mixture into a first quench zone; (b) introducing into the quench zone a mixture of a liquid carbonaceous quenching medium in a nitrogen or carbon dioxide carrier gas; (c) endothermically reacting the liquid carbonaceous quenching medium with the water and the carbon dioxide in the synthesis gas mixture, thus producing additional synthesis gas consisting of hydrogen and carbon dioxide, and wherein the additional synthesis gas is admixed with the first synthesis gas mixture to form a second synthesis gas mixture; (d) passing the second synthesis gas mixture to a second quench zone; (e) introducing into the second quench zone a cooling gas for admixture with the second synthesis gas mixture, thus cooling the second synthesis gas mixture, where the molten flyash is solidified, and thus for

Abstract: A method for starting up a partial combustion process, using a burner, wherein finely divided carbon-containing fuel is supplied to a reactor or gasifier and an oxygen-containing gas is supplied separately from the said fuel to the reactor or gasifier and is mixed with the said fuel adjacent the outlet of the burner in the reactor or gasifier. During a predetermined period a low rank particulate carbon-containing fuel is supplied to the reactor prior to the start of the partial combustion process, said low rank fuel spontaneously reacting with oxygen when brought into contact with the said oxygen-containing gas and subsequently switching the burner to a less reactive finedly divided carbon-containing fuel.

Abstract: A reactor having a vertically extending vessel wall (2) is provided with a plurality of staggered elongated parallel tubes (8) adapted for being filled with catalyst material and substantially vertically extending between an upper tube plate (10) and a lower tube plate (9), means (12, 13) for circulating a heat transfer medium between the tube plates (9, 10) alongside the tube walls (8), inlet means (3, 17, 18) above the parallel tubes (8) for distributing fluid in the form of one or more sprays and gas over the plurality of tubes (8) and outlet means (4, 20) situated below the plurality of tubes (8) for removal of fluids from the reactor, wherein the plurality of staggered tubes (8) are arranged in rows such that the tubes of adjacent rows are staggered, and wherein upper tube plate (10) is provided with openings (15), having a lower part in which the tubes (8) are closely fitted and having a substantially concentric upper part diverging in upward direction, the upper ends of the adjacent openings having edg

Abstract: A self-cleaning variable width annular slip atomizer is provided. The atomizer has a tubular body, a valve stem coaxially located in the tubular body and valve member that forms an annular slit type nozzle of a variable width with the tubular body. The valve member is continuously rotatable during operation for cleaning the slit nozzle. The valve stem may have a central opening therethrough for introducing gaseous matter into materials atomized.

Abstract: The application relates to a centrifugal pump for the supply of finely divided solids to a pressurized vessel, which pump has a hollow rotor rotatably arranged in the vessel and a supply tube for the supply of the solids in a carrier gas, which tube is axially connected to the rotor.

Abstract: Coal powder is transported from a low pressure zone to an elevated pressure zone bypassing the powder from the low pressure zone to the top of the first one of a number of vertical vessels;passing the powder in each vessel by gravity as a moving bed from the top of the vessel to the bottom thereof;passing the powder from the bottom of each vessel but the last one to the top of the subsequent vessel by mechanical or pneumatic means;discharging the powder from the bottom of the last vessel to the elevated pressure zone.

Abstract: A process and burner for the partial combustion of a finely divided solid fuel with oxygen.A core of oxygen-containing gas and an annulus of finely divided solid fuel surrounding said core are introduced into a reactor space via a burner. The solid fuel is centrally introduced into the burner, whereas oxygen-containing gas is separately introduced into the burner outside the central solid fuel. In the burner the solid fuel is caused to flow outwardly and the oxygen-containing gas is caused to flow inwardly for supplying the solid fuel as an annulus around the oxygen-containing gas into the reactor space.

Abstract: A process for gasifying solid carbonaceous matter, e.g., coal, by introducing an oxygen-containing gas axially into a reactor, and introducing the carbonaceous matter at a right angle to the reactor axis from a point within the reactor, preferably by means of a centrifugal pump.

Abstract: Pulverized coal is converted by means of a gaseous mixture and partial oxidation into synthesis gas which is subsequently utilized as a feedstock for the production of hydrocarbons. A gaseous mixture containing non-converted synthesis gas and low boiling hydrocarbons is separated from the higher boiling hydrocarbons and recycled to the coal conversion step.

Abstract: Method and apparatus for introducing finely divided solids, especially particulate coal, into a gas-containing vessel, utilizing a centrifugal pump having a feed inlet and a rotor. The rotor is surrounded by a second gas of lower density than the first gas in the vessel in order to reduce friction. The second gas can be at a lower pressure or a lower molecular weight than the first gas, low pressure hydrogen being preferred.

Abstract: A process and apparatus, wherein as hot gas from a coal gasifier discharges through a tubular outlet having therein a wall which is permeable throughout its length for the flow of hot gas centrally therethrough, a gas shield is formed along the inner surface of the tubular outlet by passing a coolant through the wall, which gas shield cools the wall and prevents sticky ash particles in the hot gas from hitting the wall. The gas shield also cools the hot gas so that the sticky ash particles lose their stickiness.

Abstract: An apparatus and method for the supply of pressurized fuel powder to a pressurized reactor, comprising the steps of, and apparatus for, supplying powder to a vessel with a centrifugal pump to inject powder into the vessel by centrifugal force, and maintaining a supply of powder from outside the vessel to the pump.

Abstract: An improved process for the production of a soot-free hydrogen and carbon monoxide-containing gas by non-catalytic partial combustion of a carbonaceous fuel is described. In this process high yields of hydrogen and carbon monoxide are obtained by staging the partial combustion reaction in a manner such that a substantial portion, e.g., up to 95%, of the carbonaceous fuel charge to the process is reacted with diluted oxygen in a first reaction zone maintained at 1200.degree. to 1700.degree. C to form a first reaction zone effluent made up principally of hydrogen and carbon monoxide and this first reaction zone effluent is passed into a second reaction zone maintained at a temperature at least 100.degree. C lower than the first reaction zone wherein the remaining carbonaceous material is substantially completely converted to gaseous partial combustion products.

Abstract: A process is disclosed for quenching of the partial combustion product gas of a slagging coal gasifier containing suspended molten slag particles wherein the hot product gas of the gasifier is passed through a tubular quench zone into which a shielding gas is introduced circumferentially to form an annular layer or protective gas shield between the product gas and the walls of the quench zone and a cooling gas is injected radially to effect direct cooling of the product gas to a temperature at which the molten slag particles solidify and lose their stickiness, said protective gas shield being maintained for a sufficient distance along the axis of the quench zone to prevent contact between the quench zone walls and the hot product gas during said cooling.