Patent application number | Description | Published |
20080312388 | Process for the Gas-Phase Polymerization Olefins - Process for the gas-phase polymerization of one or more alpha-olefins in the presence of a catalyst system, the process comprising:
| 12-18-2008 |
20090036617 | Process for the Gas-Phase Polymerization of Olefins - A process for the gas-phase polymerization of α-olefÊns CH | 02-05-2009 |
20090156758 | Gas-Phase Process for the Poymerization of Olefins - A process for the gas-phase polymerization of one or more alpha-olefins in the presence of a polymerization catalyst system, the process comprising: a) contacting in a continuous way a gas comprising one or more of said alpha-olefins with said catalyst system in a gas-phase tubular reactor at a temperature from 30° C. to 130° C. in order to obtain a polymerization degree up to 500 grams per gram of catalyst system; b) feeding in continuous the prepolymer from step a) to a successive gas-phase polymerization reactor; wherein said gas-phase tubular reactor has a length/diameter ratio higher than 100. | 06-18-2009 |
20100004408 | PROCESS FOR THE POLYOLEFIN FINISHING - A process to perform the finishing of polyolefins produced by gas-phase catalytic polymerization of one or more α-olefins in the presence of a polymerization diluent selected from a C | 01-07-2010 |
20100317811 | PROCESS FOR THE GAS-PHASE POLYMERIZATION OF OLEFINS - A process for the gas-phase polymerization of α-olefins carried out in two interconnected polymerization zones, wherein the growing polymer particles flow through the first of said polymerization zones (riser) under fast fluidization conditions, leave said riser and enter the second of said polymerization zones (downcomer) through which they flow downward in a densified form, the process being characterized in that: (a) the gas mixture present in the riser is totally or partially prevented from entering the downcomer by introducing into the upper part of said downcomer a liquid stream LB having a composition different from the gaseous mixture present in the riser; (b) the ratio R between the flow rate F | 12-16-2010 |
20110054127 | PROCESS FOR THE GAS-PHASE POLYMERIZATION OF OLEFINS - A process for the polymerisation of olefins carried out in a gas-phase reactor having interconnected polymerization zones, where the growing polymer particles flow upward through a first polymerization zone (riser) under fast fluidization or transport conditions, leave said riser and enter a second polymerization zone (downcomer) through which they flow downward under the action of gravity, leave said downcomer and are reintroduced into the riser, a gas recycle stream being withdrawn from said first polymerisation zone, subjected to cooling below its dew point and then returned to said first polymerisation zone, the process being characterised in that said gas recycle stream is cooled at a temperature Tc ranging from 0.05° C. to 3° C. below its dew point. | 03-03-2011 |
20110282013 | Process for Feeding a Catalyst in a Polymerization Reactor - A process for introducing a catalyst powder based on a titanium compound supported on magnesium halide into a gas-phase olefin polymerization reactor, characterized in that it comprises:
| 11-17-2011 |
20130190466 | POLYETHYLENE EXTRUDED ARTICLES - Extruded articles, particularly films, comprising an ethylene polymer obtained by a polymerization process carried out in the presence the products obtained by contacting the following components: (a) a solid catalyst component comprising a magnesium halide, a titanium compound having at least a Ti-halogen bond and optionally one or more internal electron donor compounds, (b) an aluminum hydrocarbyl compound, (c) optionally an external electron donor compound, and (d) a polyalcohol partially esterified with carboxylic acids with alkyl groups having at least 10 carbon atoms. | 07-25-2013 |
20140309384 | MULTISTAGE PROCESS FOR THE POLYMERIZATION OF OLEFINS - Process for transferring polyolefin particles from a first gas-phase polymerization reactor to a second gas-phase polymerization reactor in a multistage polymerization of olefins carried out in at least two serially connected gas-phase polymerization reactors, | 10-16-2014 |
20150315302 | PROCESS FOR DEGASSING AND BUFFERING POLYOLEFIN PARTICLES OBTAINED BY OLEFIN POLYMERIZATION - Process for preparing a polyolefin polymer comprising the steps of
| 11-05-2015 |
20150322178 | PROCESS FOR TREATING POLYOLEFIN PARTICLES OBTAINED BY GAS-PHASE POLYMERIZATION - Process for treating polyolefin particles obtained by gas-phase polymerization of one or more olefins in the presence of a polymerization catalyst system and a C | 11-12-2015 |
20150376303 | PROCESS FOR THE PREPARATION OF ETHYLENE POLYMERS - A process for the preparation of ethylene polymers comprising polymerizing ethylene, optionally with one or more α-olefin comonomers, in the presence of: | 12-31-2015 |
20160108147 | MULTISTAGE PROCESS FOR THE POLYMERIZATION OF OLEFINS - A process for polymerizing olefins in at least two serially connected gas-phase polymerization reactors, the process for transferring polyolefin particles from a first gas-phase polymerization reactor to a second gas-phase polymerization reactor comprising the steps of:
| 04-21-2016 |
20160108148 | PROCESS FOR THE GAS-PHASE POLYMERIZATION OF ETHYLENE OR ETHYLENE MIXTURES - A process for the gas-phase polymerization of ethylene or a mixture of ethylene and one or more 1 olefins in the presence of a polymerization catalyst system comprising the steps
| 04-21-2016 |
Patent application number | Description | Published |
20090162193 | TURBINE INLET GUIDE VANE WITH SCALLOPED PLATFORM AND RELATED METHOD - A nozzle segment is disclosed that includes a first platform configured to be connected with a casing of a gas turbine engine, a second platform configured to be connected with the casing, the second platform being disposed apart from the first platform in a radial direction of the gas turbine engine, and a plurality of blades disposed between the first and second platforms and connected thereto, a portion of an inside surface of the first platform or the second platform being scalloped so as to increase a throat area of the nozzle segment in order to increase the nozzle segment's mass flow rate handling capability. | 06-25-2009 |
20150267565 | EXHAUST GAS COLLECTOR AND GAS TURBINE - An exhaust collector for gas turbines, the exhaust collector comprises a plenum with a gas inlet wall, a gas inlet aperture provided in the gas inlet wall, and a gas discharge aperture. The exhaust collector further comprises a plurality of first connectors arranged around the gas inlet aperture and a plurality of second connectors, arranged around the gas inlet aperture. The second connectors are arranged generally opposite the first connectors. The first connectors and second connectors are paired. Pairs of one first connector and one second connector are selectively usable for mounting the exhaust collector on an exhaust diffuser of a gas turbine in a selected one of a plurality of alternative angular positions. | 09-24-2015 |
20150345555 | JACKETED MAGNETIC BEARING AND ROTARY MACHINE COMPRISING SUCH A BEARING - A jacketed magnetic bearing for a rotary machine having a rotor. The jacketed magnetic bearing comprises a stator magnetic circuit secured to a stationary support device, the stator magnetic circuit comprising at least one coil and a ferromagnetic body placed in a metallic protective enclosure. Said protective enclosure comprises an annular support and an annular jacket, the annular support and the annular jacket being welded together. The annular jacket comprises magnetic material and is coated by a protective layer. | 12-03-2015 |
20160102712 | ELECTRO-MAGNETIC BEARING ASSEMBLY WITH INNER VENTILATION TO COOL THE BEARING - A magnetic bearing assembly for a rotary machine, having a rotor circuit and a stator magnetic circuit secured to a stationary support element having at least one body of ferromagnetic material and at least one coil, both being fitted in a protective annular housing leaving uncovered a surface of revolution of said ferromagnetic body and a surface of revolution of said one coil facing a surface of revolution of the rotor circuit. The bearing assembly comprises at least one row of blades secured on the rotor circuit. | 04-14-2016 |
20160108967 | MAGNETIC BEARING ASSEMBLY HAVING INNER VENTILATION - A magnetic bearing assembly for a rotary machine having a rotor shaft, comprising a stator magnetic circuit secured to a stationary support element and comprising at least one body of ferromagnetic material and at least one coil, both being fitted in a protective annular housing leaving uncovered a surface of revolution of said ferromagnetic body and a surface of revolution of said one coil, the magnetic bearing assembly comprising an annular thrust collar secured to the rotor shaft and radially extending towards the stator magnetic circuit by a radial portion, said radial portion facing the uncovered surfaces of said ferromagnetic body and said one coil. The annular thrust collar comprises at least one flow channel. | 04-21-2016 |
Patent application number | Description | Published |
20090092492 | BALANCING GROUP FOR THE ROTOR OF A FLUID ROTARY MACHINE - A balancing group ( | 04-09-2009 |
20120299412 | METHODS AND SYSTEMS FOR OIL FREE LOW VOLTAGE CONDUITS - A turbomachine is provided. The turbomachine comprises a compressor, at least two magnetic bearings provided at opposite ends of a compressor shaft, a motor having a motor shaft, a first electrical cable having a first end, a second end, an internal core section and an outer sheath section with the internal core section and the outer sheath section extending from the first end to the second end, a first connector configured to connect the first end to the first magnetic bearing, wherein the first connector is welded or brazed to the first end to both the internal core section and the outer sheath section, and a second connector configured to connect the second end to the first external connection, wherein the second connector is welded or brazed to the second end to both the internal core section and the outer sheath section. | 11-29-2012 |
20140079576 | ELASTIC CONE FOR SEALING AND METHOD - A motor includes a casing having a cavity, a stator configured to be attached to an inside of the cavity, an elastic cone configured to be attached to a first end of the casing, a rigid cone configured to be attached to a second end of the casing that is opposite to the first end, a non-metallic part configured to be attached to the elastic cone and the rigid cone, and a rotor provided inside the cavity and configured to rotate inside the stator. The casing, the elastic cone, the rigid cone, and the non-metallic part form a hermetic enclosure in which the entire stator is enclosed and the hermetic enclosure is configured to hold a cooling fluid that cools the stator and also to prevent the cooling fluid to reach the rotor. | 03-20-2014 |