Abstract:
An outer enclosed pressure container is formed of a simple steel material. An inner enclosed container is positioned within the pressure container such that there is an intermediate space therebetween. Catalyst layers are provided within the inner container. A gas containing a reducing component and water vapor are introduced into the inner container and are therein reacted by means of the catalyst to perform a desired reducing reaction. At least part of the water vapor is alone introduced into the intermediate space to thereby pressurize the intermediate space to substantially the same pressure as occurs within the inner container. The water vapor in the intermediate space operates to protect the wall of the pressure container from the temperatures occurring due to the catalytic reaction within the inner container. The water vapor is removed from the intermediate space and is at least partially added to the gas containing a reducing component before the introduction thereof into the inner container.
Abstract:
An apparatus or system for cooling the interior of an autoclave furnace vessel after it has been pressurized with a gas and heated. The system comprises a heat conducting conduit opening at one end to the furnace interior and at the other end to a shut-off valve exterior to the vessel. Intermediate the two ends of the conduit is a coil portion comprising a heat exchanger positioned at a location in the furnace where hot vessel gases may be forced through or past the coil. Furnace gases are forced into the conduit and therefore through the coiled portion where they are heated prior to being exhausted. According to a preferred embodiment of this invention, there is a Joule-Thomson valve before the coiled portion of the conduit to reduce the temperature of the exhausting gases prior to arriving at the coiled portion.
Abstract:
A safety shield for protecting observers from flying debris resulting from a failure of a vacuum or pressure chamber viewing port following an implosion or explosion includes an optically clear shatter-resistant safety shield member spaced apart from the viewing port on the outer surface of the chamber.
Abstract:
A diagnostic radiology preparation for injestion by patients, which preparation comprises a radio opaque substance such as barium sulphate, a carrier such as water and a dissolved and/or absorbed gas such as carbon dioxide. The gas is present in an amount such that it is released when the preparation is ingested.
Abstract:
A turbine mixer for a polyethylene reactor of the stirred autoclave type in which a turbine rotor is mounted on a rotating stirrer shaft extending along the longitudinal axis of the reactor and a turbine stator is mounted adjacent to and upstream of the rotor. The turbine mixer is positioned in the final stage of a three-stage, stirred autoclave reactor, and a baffle plate is positioned so as to extend across the reactor at the inlet to the final zone. The mixer produces intense stirring of the reactor materials within the final stage, but does not cause significant backmixing into the reactor zone immediately upstream thereof. The turbine mixer may also be utilized in other zones of the reactor wherein intense axial mixing of the reactor materials is required, in which case the baffle plate would be omitted so as to produce intensive axial mixing of the reactor materials within that zone.
Abstract:
An arrangement for absorbing the thermal expansions of the steel lining of a prestressed cast pressure tank by means of the mounting support of an armored or steel-plated pipe which is passed through the lining and the prestressed cast pressure tank. The steel-plated pipe, at that opening thereof which faces the interior of the tank, has a circumferential, collar-like mounting support which is open toward the interior of the tank. One end of the mounting support is welded to the lining in such a way that the connection is impermeable to gas. The shoulder of the mounting support is positively connected with the cast pressure tank.
Abstract:
A reliable signaling device is provided which will allow an operator of a reactor vessel to ascertain when a leak has occurred in the reactor vessel rupture disc or diaphragm. The signaling device is actuated by pressure which escapes through a leak in the rupture disc. The signaling device makes the operator aware of when a rupture disc is leaking and thereby avoids a potential hazard of the reactor vessel exceeding its designed pressure rating. The signal device when modified may also be used in vacuum operations.
Abstract:
A stream of hot primary gas rising from the gasification region in a slag bath generator passes through an after-gasification region and thence into a cooling region. The stream of hot gas is cooled in the cooling region by injecting purified and cooled primary gas through tangentially-arranged nozzles at an outlet velocity of between 1 and 8 meters per second. Below the tangentially-arranged nozzles, other gas-cooling nozzles inject cooled and purified primary gas into the hot gas stream upwardly at an angle within 10.degree.-60.degree. , preferably at 45.degree. and at an outlet velocity of between 10 and 160 meters per second. The upwardly-inclined gas injection nozzles are carried by the inner wall of an annular duct. The inner wall extends between a lining of cooling tubes surrounding the vertical gas flow space.
Abstract:
Apparatus for sterilizing laboratory and hospital glassware, liquids, instruments, garments and the like comprising a sterilizer enclosure having a steam jacket surrounding the same, a source of steam and means, connected in parallel, to supply steam to said jacket at one of two predetermined pressures, means for interconnecting said jacket and said interior of said sterilizer, and means responsive to a predetermined temperature setting for the interior of the sterilizer to selectively initiate and discontinue the supply of steam to said jacket in response to the temperature in said sterilizer. A process for sterilizing laboratory and hospital glassware, liquids, instruments, garments and the like comprising the steps of inserting the materials to be sterilized in a closed, sealed, jacketed sterilizer, introducing steam into the jacket of said sterilizer to preheat said jacket, interconnecting said jacket and the interior of said sterilizer initially to displace any air within said sterilizer; continuing to interconnect the jacket and the interior of said sterilizer; providing the jacket wth steam at one of two different predetermined pressures; sensing the temperature within said sterilizer and introducing steam into said jacket at said higher pressure in response to said temperature sensitive means to maintain a variable, predetermined temperature within said sterilizer.
Abstract:
Fine-grain fuel is delivered from pressure vessels with a vehicle gas as a fluidized flow into a reactor for gasification at an elevated pressure. A gaseous gasification agent is also fed into the reactor. A control system for the fine-grain fuel and gasification agent includes detectors to provide an electrical signal which varies during feeding of fuel from the pressure vessels into the reactor. Controllers produce a fuel rate control signal corresponding to a comparison between the electrical signal from the detectors and a predetermined reference value corresponding to the desired fuel supply rate. Control valves respond to the fuel rate control signal to adjust the supply of vehicle gas to transfer fuel from the pressure vessels into the reactor. When a plurality of pressure vessels is used, then separate detectors, controllers and control valves form part of a control system which further includes computing means to provide a summation signal corresponding to the output signals from the various detectors. The summation signal is used by the various controllers for adjusting the control valves associated with each pressure vessel. A further controller produces a gasification agent control signal in response to a comparison between the summation signal and a predetermined reference value corresponding to a desired supply rate of gasification agent into the reactor. A control valve is operated in response to the gasification agent control signal. The control system further includes a gas analyzer responsive to the gaseous product from the reactor to monitor the supply of gasification agent into the reactor and adjust the supply thereof to the reactor.