OMPI – Búsqueda en las colecciones de patentes nacionales e internacionales

1.WO/1999/034907GAS DISTRIBUTOR WITH HEADER AND SPACED APART SIDEWALLS

WO - 15.07.1999

Clasificación Internacional B01J 8/18 Nº de solicitud PCT/US1998/027204 Solicitante QUALITECH STEEL CORPORATION Inventor/a CALLOWAY, Randall

A gas distribution grid (613) for fluidizing material in a reaction vessel has a plurality of gas distributors (610) each having a gas inlet (50) in fluid communication with a header (12) which is in fluid communication with a plurality of arms (14) extending through header (12). Arms (14) include apertures and nozzles (46) allowing gas flowing from inlet (50) into header (12) and through arms (14) to flow through nozzles (46) into a reaction vessel to fluidize material to be contained in the reaction vessel.

2.WO/2000/029507EXTRACTION OF BITUMEN FROM BITUMEN FROTH AND BIOTREATMENT OF BITUMEN FROTH TAILINGS GENERATED FROM TAR SANDS

WO - 25.05.2000

Clasificación Internacional C10G 1/04 Nº de solicitud PCT/US1999/019816 Solicitante BHP MINERALS INTERNATIONAL INC. Inventor/a DUYVESTEYN, Willem, P.C.

A process for the extraction of bitumen from bitumen froth generated from tar sands is disclosed. In this process, bitumen froth (9) is extracted from tar sands using a water process without requiring the use of caustic soda. The froth is treated in a counter-current decantation circuit with a paraffinic solvent to remove precipitated asphaltenes, water, and solids from the bitumen froth. A dilute bitumen product is produced having a final water and solids contents of about 0.01 to about 1 % by weight (32). This renders the dilute bitumen product amenable to direct hydrocracking. The process advantageously avoids the production of tailings sludges caused by clay dispersions. The present invention also includes a novel process for the biotreatment of bitumen froth tailings (47-52) resulting in a reduced amount of waste products and byproducts.

3.WO/2000/029336BIOCHEMICAL TREATMENT OF BITUMEN FROTH TAILINGS

WO - 25.05.2000

Clasificación Internacional C10G 1/04 Nº de solicitud PCT/US1999/020740 Solicitante BHP MINERALS INTERNATIONAL INC. Inventor/a DUYVESTEYN, Willem, P., C.

A process for the biological treatment of bitumen froth tailings produced from a tar sands treatment and bitumen froth extraction process is disclosed. In this process bitumen froth tailings, containing native hydrocarbon metabolizing microorganisms, are mixed with a growth media to form an inoculum which is then incubated under isothermal conditions for an amount of time to produce a mixed bacterial culture containing bioliquor and a water product containing a reduced amount of asphaltenes as well as solids such as clays and sands. The bioliquor produced in this process is then utilized in the initial tar sands conditioning process from which bitumen froth is produced as well as in the initial tar sands mining process via bioliquor injection directly into the tar sands formation. Because the mixed bacterial culture is made up of a number of hydrocarbon metabolizing microorganisms, the bioliquor is also used in the degradation of the asphaltenes. The treatment results in a process for decreasing the amount of waste produced in bitumen extraction processes. Furthermore, because the invention utilizes a biosurfactant containing bioliquor in the initial tar sands conditioning process, bitumen froth can be produced at lower temperatures and without requiring the use of caustic soda, as is conventionally practiced. Thus, the present invention advantageously avoids the production of tailings sludges caused by clay dispersion.

4.WO/1997/016690FLUIDIZED BED REACTOR WITH GAS DISTRIBUTOR AND BAFFLE

WO - 09.05.1997

Clasificación Internacional B01J 8/34 Nº de solicitud PCT/US1996/016978 Solicitante DORR-OLIVER INCORPORATED Inventor/a TOMASICCHIO, George

A fluidized bed reactor (10) having a reactor shell (12) and a reaction chamber (16) within the shell, the reaction chamber having chamber walls (30) and a chamber bottom portion (28). The reactor having at least one baffle (210) disposed within the reaction chamber, the baffle having a pair of outer refractory walls (212 and 213), an inner refractory wall (216) between and contiguous with the outer refractory walls, and a metallic reinforcement member (218 and 220) embedded within the inner refractory wall, the inner and outer walls being attached to at least the chamber bottom portion.

5.WO/1995/026454CURVED DRILLING APPARATUS

WO - 05.10.1995

Clasificación Internacional E21B 7/04 Nº de solicitud PCT/US1995/002946 Solicitante AMOCO CORPORATION Inventor/a WARREN, Tommy, M.

A rotary drill bit (22) for drilling a curved subterranean borehole (26). In one embodiment, the drill bit comprises a side portion (40), a plurality of cutting elements (44) that produce a lateral force on the drill bit (22) in response to the rotation of the drill bit in the borehole, and bearing means (48). The bearing means is located on the side portion (40) of the drill bit (22) and contacts the borehole wall (28) during drilling to receive a reactive force that is from the borehole, that is in response to the lateral force and that is directed to a location adjacent to the uphole end of the side portion of the drill bit (22). The reactive force and the lateral force form a downhole-moment that is about the drill bit and that is opposed by an uphole-moment having a force component that is directed at the flexible joint (186). The uphole end of the bearing means (48) is located relatively close to the cutting elements (44) such that the magnitude of the downhole-moment and the magnitude of the uphole-moment are minimized.

6.WO/1996/028381PROCESS FOR PRODUCING IRON CARBIDE AND EQUIPMENT THEREFOR

WO - 19.09.1996

Clasificación Internacional C01B 31/30 Nº de solicitud PCT/JP1996/000608 Solicitante KAWASAKI JUKOGYO KABUSHIKI KAISHA Inventor/a INOUE, Eiji

A powdery ore is preheated with hot air in a preheating furnace (2) and sent into a fluidized-bed reaction furnace (1). Iron oxide particles contained in the gas discharged from the furnace (2) are recovered in a dust collector (3) and are reduced in a reduction furnace (4). The reduced iron particles are fed into the passage leading to the reaction furnace (1), where they act as a catalyst for accelerating iron carbide formation.

7.WO/1998/043644FORMULATIONS AND METHODS TO TREAT AND PREVENT EQUINE PROTOZOAL MYELOENCEPHALITIS

WO - 08.10.1998

Clasificación Internacional A61K 31/53 Nº de solicitud PCT/US1998/006340 Solicitante GRANSTROM, David Inventor/a GRANSTROM, David

The present invention provides formulations useful to treat EPM. It also provides methods to treat EPM in a horse in need of such treatment, comprising administering a pharmaceutically effective amount of a triazine-based anti-coccidial. Preferred are methods to treat EPM using clazuril, diclazuril, toltrazuril or letrazuril. The present invention also provides methods to prevent S. neurona infection in horses comprising administering a prophylactic amount of a triazine-based anticoccidial. Preferred is a method to prevent S. neurona infection by using clazuril, diclazuril, toltrazuril or letrazuril, alone or in combination with other known therapeutics.

8.WO/2001/075304SUBSEA CHEMICAL INJECTION PUMP

WO - 11.10.2001

Clasificación Internacional F04B 17/04 Nº de solicitud PCT/US2001/009006 Solicitante BAKER HUGHES INCORPORATED Inventor/a KOHL, Kristopher, T.

A chemical injection pump for injecting chemicals into subsea system at depths up to 10,000 feet is described which uses a minimum of moving parts by employing an actuator, for instance a solenoid, to power a double acting actuator rod and plungers thereon. The pump would generate low pressures and low fluid volumes, but be more durable and reliable than conventional rotating pumps operating under subsea conditions.

9.WO/2003/004951METHOD FOR THE LIQUEFACTION AND DENITROGENATION OF NATURAL GAS, SYSTEM FOR CARRYING OUT SAID METHOD

WO - 16.01.2003

Clasificación Internacional F25J 1/02 Nº de solicitud PCT/FR2002/002242 Solicitante TECHNIP FRANCE Inventor/a PARADOWSKI, Henri

A method for the liquifaction and denitrogenation of natural gas, a system for carrying out said method, and gases obtained by said separation. The invention relates to a method for the liquefaction and denitrogenation of natural gas (1) containing nitrogen, wherein said natural gas (1) is cooled, liquefied and separated into a first head fraction (9), which is relatively more volatile and enriched with nitrogen, and a first foot fraction (15). The method is characterized in that the first head fraction (9) is cooled and liquefied, separated into a second head fraction (11) which is relatively more volatile and which provides gaseous nitrogen (29), and a second foot fraction (12) which is re-treated, also characterized in that the first foot fraction (15) is cooled in order to provide liquefied natural gas which is essentially devoid of nitrogen (24). Other embodiments are also disclosed.

10.WO/1997/028284STEEL-MAKING METHOD AND PLANT

WO - 07.08.1997

Clasificación Internacional B01D 53/047 Nº de solicitud PCT/FR1997/000175 Solicitante L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE Inventor/a GAUTHIER, Pierre

A method wherein air is separated in an air separation unit (9), the oxygen thus generated is consumed during at least one step (2, 12, 13) of the steel-making process, the resulting gas is at least partially decarbonated, and the at least partially decarbonated gas is used (at 13) in a reduction reaction of the steel-making process. The partial decarbonation step cyclically includes a CO₂ fixation step using a fixation agent, and a regeneration step in which said agent is regenerated in a reactor. Nitrogen generated by the air separation unit (9) is fed into said reactor during said fixation agent regeneration step. The method is useful in combined coal gasification/direct iron ore reduction processes.

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