Abstract: The invention comprises a burner (10), a first fuel pipe (18) for conveying a mixture of air and pulverized coal to the burner (10), a second fuel pipe (32) for conveying the mixture to the first pipe (18), an elbow (26) joining the first pipe (18) to the second pipe (32), said elbow (26) having an inner radius and an outer radius (27), the improvement comprising a restriction (30) in the second pipe (32), being located such that it forces the coal particles towards the outer radius (27) of the elbow (26), thereby reducing impact wear on the outer radius wall (27) of the elbow (26).

Abstract: A power cell having an anode, a cathode and a solid electrolyte is improved by having as the solid electrolyte a glass comprising either (1) from about 22 mole percent to about 47 mole percent Na.sub.2 O, from about 4 mole percent to about 9 mole percent Y.sub.2 O.sub.3 and from about 47 mole percent to about 70 mole percent SiO.sub.2 or (2) from about 34 mole percent to about 47 mole percent Li.sub.2 O, from about 5 mole percent to about 9 mole percent Y.sub.2 O.sub.3 and from about 47 mole percent to about 58 mole percent SiO.sub.2.

Abstract: Leakage producing faults in a guide tube of finite length are repaired by encapsulating the guide tube within a sleeve-like member which extends between a wall, from which the guide tube projects, and a housing which passes through the guide tube and extends beyond the end thereof. The sleeve-like member has resilient seals at the ends thereof, is pre-loaded to partially compress the seals and is shaped so that exposure thereof to a pressurized fluid will result in further compression of the seals.

Abstract: A pulverizer, i.e., grinding, roll (18) of the type that is particularly suited for embodiment in a bowl mill (10) wherein the roll (18) coacts with another surface (14) within the mill (10) to effect the pulverization therewithin of a material such as coal. The subject roll (18) embodies a trimetal form of construction. More specifically, the core material, i.e., the first or inner layer (50), of the trimetal roll (18) consists of a relatively soft material that is noted for its good machinability. The next, i.e., second or intermediate, layer (52) of the trimetal roll (18) comprises a material that has medium wear-resistant qualities. The last, i.e., third or outer, layer (54) of the trimetal roll (18) comprises a material having higly abrasive resistant qualities. In addition, there is provided a method of manufacturing such a trimetal roll (18).

Abstract: A pressurized coal gasification system having double wall containment vessels (2,10) is disclosed. The gasification vessel (2) is provided with a gas tight water seal (36) for connecting the lower end of the inner water-cooled vessel (4) with the bottom supported slag tank (32). The seal (36) prevents gas leakage between the vessel interior and the pressurized annular volume (24) formed between the inner and outer gasification chambers (4,6). A flow of clean, particulate-free product gas (60) is routed into the contiguous annular volume (24,26,28) formed between the inner water-cooled gas directing members (4,20,12) and the outer, pressure containing members (6,22,16) to prevent either leakage of raw product gas into the annular volume or dilution of the product gas (46) by leakage of the sealing gas (60) into the hot product gas flowstream.

Abstract: A pulverizer, i.e., grinding, roll (18) of the type that is particularly suited for embodiment in a bowl mill (10) wherein the roll (18) coacts with another surface (14) within the mill (10) to effect the pulverization therewithin of a material such as coal. The subject roll (18) embodies a trimetal form of construction. More specifically, the core material, i.e., the first or inner layer (50), of the trimetal roll (18) consists of a relatively soft material that is noted for its good machinability. The next, i.e., second or intermediate, layer (52) of the trimetal roll (18) comprises a material that has medium wear-resistant qualities. The last, i.e., third or outer, layer (54) of the trimetal roll (18) comprises a material having highly abrasive resistant qualities. In addition there is provided a method of manufacturing such a trimetal roll (18).

Abstract: A device (10) is provided that is operative for purposes of accomplishing the drilling, boring and tapping of a relatively large size opening (106) in a body (17) while the latter is located in a hostile environment. The subject device (10) is characterized both in that it is portable and in that the boring and tapping functions are combined into the same device (10). The subject device (10) includes fixture means (18) for effecting the alignment of the device (10) relative to the opening (106) that is to be bored and tapped, support means (14) having a surface supported thereon in juxtaposed relation thereto, first operating means (16) supported on the aforesaid surface for movement relative thereto in a predetermined direction, and second operating means (104) cooperatively associated with the first operating means (16) for movement therewith and operative for purposes of performing certain machining operations.

Abstract: A production tubing for an oil well is supported by two solid structures at the wellhead. A downhole valve is controlled through pressure of a hydraulic fluid provided by a ground-level source connected to the downhole valve through a penetrating conduit formed in three segments. The first segment is formed by drilling a passage through the upper structure which communicates with a passage provided in a sleeve clamped between the two structures. The third segment is provided by drilling a passage through the lower structure which communicates with the passage provided in the sleeve.

Abstract: Compression loading on pin 14 is determined by placing hydraulic jack 20 adjacent thereto. A voltage 40 is imposed between the base member 12 and the load member 10. Current flowing through the pin is detected 42. Hydraulic pressure in the jack is increased 28 until current flow through the pin stops. The pressure level at this point is determined 34.

Abstract: Electrodes, in the form of plates, are held parallel to each other to form passageways in which electrostatic fields are generated when the plates are charged by a source of variable voltage. The variable voltage is programmed to establish an initial electrostatic field strong enough to mix polar and nonpolar fluids. The mixture is then flowed through the electrostatic field which is of the strength needed to coalesce the polar fluids which have united with a contaminant in the nonpolar fluid.

Abstract: An alloy characterized by its highly abrasive resistant qualities which render it particularly suitable for use as the material from which to fabricate the external surface of a grinding, i.e., pulverizer, roll (18) of the type that is designed to be employed in a bowl mill (10) so as to be operative therein for purposes of effecting the pulverization of a material such as coal through the coaction of the grinding roll (18) with another surface (14) with which the bowl mill (10) is provided for this purpose. The subject alloy which is capable of being cast or applied to the grinding roll (18) in the form of a weld overlay comprises, by weight percentages, 4.0-6.0% Carbon; 3.0-14.0% Manganese; 1.0-2.5% Silicon; 15.0-30.0% Chromium; and 4.0-6.0% Molybdenum; with 0.5-2.0% Boron being added thereto, the balance being iron and incidental impurities.

Abstract: A vane wheel arrangement (30) particularly suited for use in a bowl mill (10) of the type that is employed for purposes of effecting therewithin the pulverization of materials such as coal. The subject vane wheel arrangement (30) which is positioned within the bowl mill (10) so as to be located in the path of flow of the air that in flowing through the bowl mill (10) transports therewith the pulverized material, is operative to effect a primary classification of the pulverized material. Encompassed within the subject vane wheel arrangement (30) are vane means (36) supported on the rotatable grinding surface (14) of the bowl mill (10) for rotation therewith, and a converging/diverging orifice means (38) located in spaced relation to the rotatable grinding surface (14). Both the vane means (36) and the exposed surfaces of the converging/diverging orifice means (38) are formed of a material that is noted for its good abrasive resistant qualities.

Abstract: A cylindrical horizontally extended vessel which receives a mixture of fluids of different densities. The separation of the fluids is provided a minimum of disturbance by the marine motions to which the separator system is subjected. The separating liquids of the mixture are isolated from marine movements by a compartment in the lower part of the separator which is check-valved to be maintained liquid packed. A table is formed above the compartment as a structure stabilizing the liquids so they may be separately withdrawn from the separator.

Abstract: A burner (10) is provided for supplying coal-liquid slurry and combustion air to a furnace (2). The burner housing (12) is mounted about the burner throat opening (6) and interconnected to a combustion air supply duct (8). A coal slurry gun (14) is disposed coaxially within the housing for spraying the coal-liquid slurry into the furnace. A first conduit means (20) is disposed coaxially about the coal slurry gun to define a primary air flow passage (22) surrounding the slurry gun. Additionally, a second conduit means (30) is disposed coaxially about the first conduit means (20) to define a secondary air flow passage (32) between the first and second conduit means and a tertiary air flow passage (34) between the second conduit means and the burner throat (4). Independently controllable dampers 41, 42 and 43 are provided in the air inlets to the primary, secondary and tertiary air flow passages to permit independent control of air flow velocity.

Abstract: A vane wheel arrangement (30) particularly suited for use in a bowl mill (10) of the type that is employed for purposes of effecting therewithin the pulverization of materials such as coal. The subject vane wheel arrangement (30) which is positioned within the bowl mill (10) so as to be located in the path of flow of the air that in flowing through the bowl mill (10) transports therewith the pulverized material, is operative to effect a primary classification of the pulverized material. Encompassed within the subject vane wheel arrangement (30) are vane means (36) supported on the rotatable grinding surface (14) of the bowl mill (10) for rotation therewith, and a converging/diverging orifice means (38) located in spaced relation to the rotatable grinding surface (14). Both the vane means (36) and the exposed surfaces of the converging/diverging orifice means (38) are formed of a material that is noted for its good abrasive resistant qualities.

Abstract: A first portion (50) of a sulfur and nitrogen-bearing carbonaceous fuel is gasified in a gasification reactor (20) in the presence of a reducing atmosphere of air to produce a hot, char-containing, carbon-monoxide-rich fuel gas (42) having a low Btu content. After cooling, the char-containing carbon-monoxide-rich fuel gas (42) is introduced into a steam generating furnace (10) and combusted therein with a second portion (40) of the carbonaceous fuel in the presence of at least sufficient additional air to substantially complete combustion whereby a hot flue gas is produced. A sulfur-capturing material (60) is introduced into both the gasification reactor (20) and the combustion zone of the steam generating furnace (10) to absorb a substantial portion of the sulfur-containing gases produced during the gasification and combustion processes.

Abstract: Saline-tolerant surfactant is utilized in tertiary recovery of oil. The surfactant is concentrated in a portion of the produced oil and water and is recovered by the use of a cosolvent and fresh water. Both the cosolvent and surfactant are reclaimed for reuse, while the oil is released for sale.

Abstract: A fluidizing feed apparatus (20) for supplying particulate material to a fluidized bed furnace (12) having a housing (22) which defines a chamber which is divided by a perforated distribution plate (24) into a gas plenum (26) beneath the plate and a particulate fluidizing plenum (28) above the plate. Conveying gas is fed under pressure to the gas plenum to pass upwardly therefrom through the perforated distribution plate. The upwardly directed conveying gas fluidizes the particulate material so as to establish a discrete bed (60) of fluidized particulate material superadjacent the distribution plate (24) and a splash zone (70) thereabove. Transport conduits (14) open into the splash zone (70) at a selected distance above the surface (65) of the discrete bed (60) to receive particulate material and conveying gas therefrom for transport to the fluidized bed (16) of the furnace (12).

Abstract: A repair sleeve assembly (12) secured entirely within a tube (16). A hollow tension member (18) has an enlarged head (26), a lower externally threaded stem (28) and a generally cylindrical body portion (30) intermediate the head and stem. A segmented sheath surrounds the tension member and includes a generally cylindrical nut member (24), a ring member (22) and a sleeve member (20), which are operatively arranged such that when the tension member is drawn downward, the enlarged head and lower ring member compress the sleeve to form seals against the tube wall. A tool for effecting the seal is also disclosed, including an inner rod (38) having an upper end (40) adapted to engage the lower end of the tension member, for aligning the tool relative to the repair assembly, and lugs (42) carried circumferentially on the rod to engage the tension member. A chuck member (44) is adapted to move longitudinally and rotationally with respect to the inner rod, and carries tangs (46) for engaging the nut member.

Abstract: The position of a valve member is sensed by a transducer mounted on the exterior of the valve housing. The transducer is connected to a passive circuit located within an enclosure mounted on or adjacent to the valve housing. The passive circuit, when connected to a source of electrical power, provides a signal commensurate with the output of the transducer and an encoded signal which identifies the valve. The information contained in these signals is transmitted to a remote location, decoded and employed to determine the existance of a valve member position error.