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| Number | Title | Issue Date |
| 5740678 | Impingement jet freezer and method An impingement freezer having a zoned freezing chamber in which the temperature of each zone is independently controllable so that the temperature profile within the impingement freezer is coldest at a zone adjacent the outlet and warmest at a zone adjace... | 04/21/1998 |
| 5631050 | Process of depositing thin film coatings A process of depositing thin film coatings by evaporation in which a plasma is formed in an evacuated chamber and a source of material to be evaporated is provided which is evaporated to produce evaporated material. A substrate to be coated is located wit... | 05/20/1997 |
| 5626469 | Scroll apparatus A vacuum pump of the scroll type having first and second scroll components each having a scroll structure defined thereon. The scroll components are arranged in the pump such that the respective scroll structures inter-engage with the first scroll compone... | 05/06/1997 |
| 5624733 | Structured packing A structured packing for producing intimate contact between liquid and vapor phases formed of a plurality of juxtaposed sheets through which the liquid phase descends as a film. The sheets have corrugations to define flow channels through the sheets for t... | 04/29/1997 |
| 5617742 | Distillation apparatus A distillation apparatus having applicability to an air separation plant in which a distillation column is suspended within a containment sleeve from a main heat exchanger or a head condenser of the distillation column. The suspension of the distillation ... | 04/08/1997 |
| 5618992 | Device and method for monitoring deposits in a pipe or vessel A non-intrusive device for attachment to a pipe or vessel through which a fluid flows for monitoring the accumulation of deposits on the interior surface of the pipe or vessel. The device comprises a tubular member having an internal cross-sectional confi... | 04/08/1997 |
| 5615573 | Level detector A level detector for detecting a level of a liquid is provided with an elongated probe having opposed proximal and distal ends. In use, the distal end of the elongated probe is submerged beneath the level of the liquid with an unwetted length of the elong... | 04/01/1997 |
| 5611660 | Compound vacuum pumps A hybrid vacuum pump comprising a turbomolecular stage positioned at the inlet end of the pump and comprising a stator formed from an array of stationary blades and a rotor formed from a further array of blades arranged for rotation at high speed between ... | 03/18/1997 |
| 5611218 | Nitrogen generation method and apparatus A method and apparatus for generating nitrogen from the separation of air in a single column nitrogen generator. Nitrogen rich vapor is condensed to form reflux through the vaporization of an oxygen-rich liquid stream produced as column bottoms. The vapor... | 03/18/1997 |
| 5609041 | Air separation A first flow of air is compressed in a first air compressor associated with a gas turbine and is purified in an adsorptive purification unit which separates water vapour and carbon dioxide from the air. The purified first flow of air is further compressed... | 03/11/1997 |
| 5609104 | Incinerator for incinerating halogenated organic compounds An incinerator in which halogenated organic compounds are burned in the presence of oxygen or oxygen enriched air to produce combustion products. The combustion products potentially include unreacted oxygen and halogenated organic compounds which can reac... | 03/11/1997 |
| 5609369 | Clamp apparatus with opening for a probe A clamp for securing adjacent lengths of pipe. The clamp incorporates a seal designed to incorporate a temperature or pressure probe. The clamp is circular and has upstanding end portions and a threaded rod member passing through apertures in the upstandi... | 03/11/1997 |
| 5608197 | Molecular processes and apparatus A method for effecting the initiation of a molecular process or reaction in a substance, which comprises bringing the substance into contact with a surface of a cold cathode device and applying an electric potential across the cold cathode device to cause... | 03/04/1997 |
| 5591308 | Wood pulp reactor An oxygen delignification method and apparatus in which a charge of heated wood pulp is reacted with oxygen in the presence of a charge of caustic soda in a plurality of reaction stages located between mixing stages in which caustic is mixed with the wood... | 01/07/1997 |
| 5591241 | Liquid vapor contact apparatus An apparatus comprising a liquid-vapor contact column housing an array of vertically spaced liquid-vapor contact trays and an arrangement of downcomers that conduct liquid from tray-to-tray down the array. In a vapor space between the trays there are liqu... | 01/07/1997 |
| 5582031 | Air separation Air is compressed in a compressor, cooled in a main heat exchanger, partially condensed in a reboiler-condenser, introduced into a higher pressure rectifier, and separated therein into nitrogen and oxygen-enriched liquid. Resulting nitrogen is condensed i... | 12/10/1996 |
| 5582034 | Air separation method and apparatus for producing nitrogen A method of producing nitrogen is a single column nitrogen generator in which first and second coolant streams are used to condense nitrogen-rich tower overhead to provide reflux for the distillation column. One of the coolant streams is composed of liqui... | 12/10/1996 |
| 5582035 | Air separation Cooled and purified air is introduced into a higher pressure rectification column and separated into oxygen-enriched liquid and nitrogen vapor. A stream of the oxygen-enriched liquid is flashed through a pressure reducing valve to form a mixture of liquid... | 12/10/1996 |
| 5579646 | Cryogen delivery apparatus A cryogen delivery apparatus for delivering cryogen in a saturated state includes a vessel to contain the cryogen in liquid and vapor phases. The vessel has a headspace region and a heat exchanger located within the headspace region for indirectly exchang... | 12/03/1996 |
| 5577394 | Air separation Cooled and purified air is introduced into a higher pressure rectifier in at least partly vaporous state and is separated therein into oxygen-enriched liquid air and nitrogen. One part of the nitrogen so separated is condensed in a reboiler-condenser and ... | 11/26/1996 |
| 5573387 | Vacuum pumps A rotary vacuum pump having a low vacuum stage and a high vacuum stage. Each stage includes a stator body having a bore and a rotor mounted eccentrically in the bore to form a cavity between the stator body and the rotor. The rotor of each stage has two v... | 11/12/1996 |
| 5572874 | Air separation Air is introduced through an inlet into a higher pressure rectification column. A stream of oxygen-enriched liquid is withdrawn through an outlet from the higher pressure rectification column. A part of this stream is introduced into a low pressure rectif... | 11/12/1996 |
| 5571231 | Apparatus for storing a multi-component cryogenic liquid An apparatus for storing a multi-component cryogenic liquid in which headspace vapor in a storage tank is condensed in an external condensation tank through indirect heat exchange with liquid being vented from the storage tank. The resulting condensate ca... | 11/05/1996 |
| 5570582 | Cryogenic refrigeration method for use in connection with a cryogenic temperature swing adsorption process A cryogenic refrigeration method for use in connection with a cryogenic temperature swing adsorption process. The cryogenic temperature swing adsorption process has a discontinuous production cycle during which production of a purified vapor stream ceases... | 11/05/1996 |
| 5571309 | Adsorption process An adsorption process in which high and low pressure feed streams are introduced into a plurality of beds to produce product streams by adsorbing one or more preferentially adsorbed components within the beds. Each bed is subjected to a low pressure feed ... | 11/05/1996 |
| 5560305 | Burner block and method for furnace A burner block for mounting a burner within a furnace containing a melt to be heated by the burner. The burner block comprises a body having a passageway terminating in a divergent opening. The passageway is configured to receive the burner so that the bu... | 10/01/1996 |
| 5560763 | Integrated air separation process An air separation method in which a pre-purification unit is provided with three or more beds which are subjected to a pressure swing adsorption process. Each of the beds is subjected to feed, pressurization, purge and repressurization stages. The purge s... | 10/01/1996 |
| 5551258 | Air separation A stream of air is compressed in compressor and has water vapor and carbon dioxide removed therefrom in purification unit. A part of the resulting purified air is cooled by passage through heat exchanger and is employed to heat an intermediate reboiler in... | 09/03/1996 |
| 5546766 | Air separation Air is compressed in a compressor, purified in a purification unit, cooled by passage through a main heat exchanger and separated in a double rectification column comprising a higher pressure rectification column and a lower pressure rectification column.... | 08/20/1996 |
| 5547347 | Gas injection apparatus and method An apparatus and method for dispersing a gas in a liquid and for increasing gas pressure of a gas from a supply pressure to a delivery pressure. A first pump pumps the liquid to produce a pressurized liquid stream. The gas is injected into the pressurized... | 08/20/1996 |
| 5538702 | Gas stream purification apparatus A method for the treatment of a stream of exhaust gases including phosphine in which the stream is heated to a sufficiently high temperature to decompose the phosphine to phosphorus vapor and the stream is then passed into a reactor containing calcium oxi... | 07/23/1996 |
| 5533338 | Cryogenic vapor recovery process and system A process and system for removing condensable vapors contained within the gas stream in accordance with the process and system, condensable vapors contained within the gas stream are condensed within one or more condensers through indirect heat exchange o... | 07/09/1996 |
| 5533339 | Air separation Air is compressed in compressors, cooled in a main heat exchanger, and separated into oxygen and nitrogen products in a double rectification column comprising a higher pressure rectification column and a lower pressure rectification column. A liquid oxyge... | 07/09/1996 |
| 5528906 | Method and apparatus for producing ultra-high purity oxygen A method and apparatus for producing a ultra-high purity oxygen product in which a nitrogen generator is operated to produce nitrogen and an oxygen rich fraction as column bottoms. Part of the oxygen rich fraction can be further processed at column pressu... | 06/25/1996 |
| 5525271 | Liquid-vapor contact device A liquid-vapor contact device having a plate-like body provided with a central section formed of expanded metal construction. The expanded metal construction provides slit-like openings for the vapor to ascend through the plate-like body and mix with liqu... | 06/11/1996 |
| 5519946 | Freeze dryer shelf The present invention provides a shelf for a freeze dryer which includes a pair of first and second flat plates spaced apart from one another, and a plurality of ribs located between the first and second plates and spaced from one another so as to define ... | 05/28/1996 |
| 5516279 | Oxy-fuel burner system designed for alternate fuel usage An oxy-fuel burner system for alternately or simultaneously burning gaseous and liquid fuels. A gaseous fuel jet emanating from an oxy-fuel burner is either undershot by an oxygen lance or is sandwiched between oxidant jets produced by two subsidiary oxid... | 05/14/1996 |
| 5511381 | Air separation An air separation method and apparatus in which a stream of air is compressed in a compressor and purified in a unit. One stream of the resulting air is cooled in a heat exchanger and is separated in an arrangement of rectification columns comprising a hi... | 04/30/1996 |
| 5507148 | Air separation method and apparatus to produce nitrogen An air separation method and apparatus for producing nitrogen is provided in which oxygen enriched liquid, produced as a column bottoms of a distillation column, is partially vaporized and phase separated. The vapor phase is expanded to provide refrigerat... | 04/16/1996 |
| 5507857 | Pressure swing adsorption process for fractionating a multi-component mixture A method of rectifying a multicomponent mixture by pressure swing adsorption to separate primary and secondary components of the mixture. Two groups of adsorbent beds are used in the method and adsorbent beds of the two groups are employed in a paired rel... | 04/16/1996 |
