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4684321 Heat recovery system including a dual pressure turbine
New Patents
370
small, enables one to use a trapping fabric of much larger mesh than has been possible heretofore.
4678647 PROCESS FOR THE RECOVERY OF GALLIUM AND GERMANIUM FROM COAL FLY ASH Bohdan Lisowyj, David C Hitchcock, Henry Epstein assigned to Enron Corp A method is disclosed for recovering gallium and/or germanium from fly ash which comprises pelletizing the fly ash, treating the pellets in the presence of an oxidizing gas at a temperature of from about 900&20 +0 C. to just below the fusion temperature of the pellets, treating the pellets in the presence of a reducing gas at the same temperature range, and recovering gallium and/or germanium suboxides from the gas. + RE
4682699 WASTE RECYCLING
KIT
Holmes E Ertley A waste recycling kit by which trash can be separated into its categories at its source, placed into standard size supermarket grocery bags and delivered to a collection point, such as at curb side, while in the bag for maintaining categorization of the trash until it reaches a recycling facility. The kit includes a wall mounted organizer in the form of a rack having a plurality of compartments shaped and configured to receive supermarket paper bags with indicia designating the category of trash to be placed in each bag. The bags may be removed from the compartments and placed in an exterior container which may be an in-ground container or a wheeled container that may be oriented at curb side so that a plurality of the bags may be placed in the container for pickup by personnel attending a pickup vehicle which is constructed to maintain the separated trash categorized until it delivers the trash to a recycling facility.
4684321 HEAT RECOVERY SYSTEM INCLUDING A DUAL PRESSURE TURBINE John Barrett, Richard A Cemenska, John Gladden, Mark Moeckel, Philip H Schneider assigned to Caterpillar Inc Heat recovery systems are useful, for example, in vehicles that generate large amounts of heat energy during operation. The heat energy is used to drive a dual pressure turbine for producing useful work. In order to fully utilize the great majority of the heat energy produced, the engine exhaust is used to convert a fluid to a gas and superheat the gas to a preselected temperature at a preselected pressure. A first stage of the dual pressure turbine receives the superheated gas and directs the gas at a supersonic velocity against the blades of the rotor. The gas exiting the first stage and the superheated gas at a lower preselected temperature is controllably and substantially separately directed to a second stage at substantially the same velocity. This heat recovery system fully utilizes the heat energy generated by the engine and substantially eliminates the sooting and the formation of oxides within the exhaust system. The dual pressure turbine effectively utilizes the superheated gases to produce useful work at a high system efficiency.
4684514 HIGH PRESSURE PROCESS FOR SULFUR RECOVERY FROM A HYDROGEN SULFIDE CONTAINING GAS STREAM Michael S Chen assigned to Air Products and Chemicals Inc An improved method of recovering sulfur from a hydrogen sulfide-containing gas stream which removes water concurrently with the condensation of sulfur and which can be operated at high pressure.
370
small, enables one to use a trapping fabric of much larger mesh than has been possible heretofore.
4678647 PROCESS FOR THE RECOVERY OF GALLIUM AND GERMANIUM FROM COAL FLY ASH Bohdan Lisowyj, David C Hitchcock, Henry Epstein assigned to Enron Corp A method is disclosed for recovering gallium and/or germanium from fly ash which comprises pelletizing the fly ash, treating the pellets in the presence of an oxidizing gas at a temperature of from about 900&20 +0 C. to just below the fusion temperature of the pellets, treating the pellets in the presence of a reducing gas at the same temperature range, and recovering gallium and/or germanium suboxides from the gas. + RE
4682699 WASTE RECYCLING
KIT
Holmes E Ertley A waste recycling kit by which trash can be separated into its categories at its source, placed into standard size supermarket grocery bags and delivered to a collection point, such as at curb side, while in the bag for maintaining categorization of the trash until it reaches a recycling facility. The kit includes a wall mounted organizer in the form of a rack having a plurality of compartments shaped and configured to receive supermarket paper bags with indicia designating the category of trash to be placed in each bag. The bags may be removed from the compartments and placed in an exterior container which may be an in-ground container or a wheeled container that may be oriented at curb side so that a plurality of the bags may be placed in the container for pickup by personnel attending a pickup vehicle which is constructed to maintain the separated trash categorized until it delivers the trash to a recycling facility.
4684321 HEAT RECOVERY SYSTEM INCLUDING A DUAL PRESSURE TURBINE John Barrett, Richard A Cemenska, John Gladden, Mark Moeckel, Philip H Schneider assigned to Caterpillar Inc Heat recovery systems are useful, for example, in vehicles that generate large amounts of heat energy during operation. The heat energy is used to drive a dual pressure turbine for producing useful work. In order to fully utilize the great majority of the heat energy produced, the engine exhaust is used to convert a fluid to a gas and superheat the gas to a preselected temperature at a preselected pressure. A first stage of the dual pressure turbine receives the superheated gas and directs the gas at a supersonic velocity against the blades of the rotor. The gas exiting the first stage and the superheated gas at a lower preselected temperature is controllably and substantially separately directed to a second stage at substantially the same velocity. This heat recovery system fully utilizes the heat energy generated by the engine and substantially eliminates the sooting and the formation of oxides within the exhaust system. The dual pressure turbine effectively utilizes the superheated gases to produce useful work at a high system efficiency.
4684514 HIGH PRESSURE PROCESS FOR SULFUR RECOVERY FROM A HYDROGEN SULFIDE CONTAINING GAS STREAM Michael S Chen assigned to Air Products and Chemicals Inc An improved method of recovering sulfur from a hydrogen sulfide-containing gas stream which removes water concurrently with the condensation of sulfur and which can be operated at high pressure.