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| Number | Title | Issue Date |
| 6866504 | Burner with high-efficiency atomization A burner has a nozzle formed of generally concentric inner and outer pieces. The inner piece defines a fuel conduit, and the outer piece defines an annular gas conduit which tapers down towards the outlet end of the nozzle. The inner piece has a rounded edge near th... | 03/15/2005 |
| 6413418 | System and method for oxygenation of waste water Oxygen is mixed with waste water at an early stage in a water treatment facility, to reduce odor caused by anaerobic reactions of sulfur. Waste water is withdrawn from a collection basin, by a pump connected to a suction pipe, and is mixed with oxygen fro... | 07/02/2002 |
| 6363729 | Apparatus and method for injecting cryogenic liquid into containers A compact device for injecting cryogenic liquid into containers is capable of use with containers of varying sizes. A vessel containing the cryogenic liquid is connected to a nozzle by a thermally-insulated, flexible hose. The nozzle is connected to an ar... | 04/02/2002 |
| 6290857 | Method for oxygenation of waste water Oxygen is mixed with waste water at an early stage in a water treatment facility, to reduce odor caused by anaerobic reactions of sulfur. Waste water is withdrawn from a collection basin, by a pump connected to a suction pipe, and is mixed with oxygen fro... | 09/18/2001 |
| 6270681 | Aeration pond with oxygen recycling Water in an aeration pond is treated with substantially pure oxygen. The oxygen originates from a pressurized oxygen supply, and is conducted through a conduit to the bottom of the pond. Perforations located around the perimeter and along the length of th... | 08/07/2001 |
| 6176935 | System and method for refining sugar A sugar refining process uses carbon dioxide obtained from a module containing a plurality of gas-permeable polymeric membranes. Flue gas from a boiler is scrubbed, and then passed through the gas-separation module. The output of the module contains an en... | 01/23/2001 |
| 5986240 | Method and apparatus for maintaining contents of a compressed gas cylinder at a desired temperature A cabinet, sized to accommodate a compressed gas cylinder, includes a heater which maintains the contents of the cylinder within a desired temperature range. By heating the air surrounding the cylinder, the heater heats not only the cylinder but also its ... | 11/16/1999 |
| 5783037 | System and method for operating a pulp mill A pulp mill includes a digester which contains a raw material, a digesting medium, and a source of steam. Oxygen is injected into the steam line, at a point which minimizes exposure of the oxygen to the steam outside of the digester. The oxygen can also b... | 07/21/1998 |
| 5720884 | Method for automatic control of corrosion in a water distribution system A water distribution system facilitates automatic corrosion control. The operator enters a set of values of parameters associated with water in the system. The system automatically and repeatedly measures the temperature and pH of the water. The system th... | 02/24/1998 |
| 5611833 | Method and apparatus for producing spheroidal glass particles One forms spherical or spheroidal glass particles by entraining a powder of glass particles in a carrier gas and injecting the entrained particles into the center of the flame of an oxygen-fuel burner. Separate conduits carry fuel, such as natural gas, an... | 03/18/1997 |
| 5543129 | Non-cryogenic method and apparatus for producing pure nitrogen A non-cryogenic system for producing ultra-pure nitrogen includes a pressure swing adsorption (PSA) unit for converting incoming ambient air into a process stream containing mainly nitrogen. The process stream is combined with hydrogen, in a reactor, to r... | 08/06/1996 |
| 5440824 | Method of cleaning gas cylinders with supercritical fluids The interior of a gas cylinder is cleaned using a supercritical fluid. A treating material, such as carbon dioxide, is injected into the cylinder, and the pressure in the cylinder is increased until the pressure of the treating material exceeds its critic... | 08/15/1995 |
| 5385025 | Apparatus and method for dispensing droplets of a cryogenic liquid The present invention produces discrete droplets of cryogenic liquid, suitable for injection into receptacles such as cans or plastic bottles, at high speeds. A container of cryogenic liquid includes a hole and an orifice, spaced apart from each other, an... | 01/31/1995 |
| 5328354 | Incinerator with auxiliary gas evacuation system An incinerator for combustible or thermally-decomposable gases includes a device which insures that gas continues to flow through the incinerator in the event of failure of the scrubber fan connected to the outlet of the incinerator. When the scrubber fan... | 07/12/1994 |
| 5255525 | System and method for atomization of liquid metal The present invention produces a cold gas stream having a constant temperature and pressure. The gas stream is obtained from two initial streams, one being a liquefied gas and the other being a gas at ambient temperature. The liquefied gas stream is combi... | 10/26/1993 |
