| Patent application number | Description | Published |
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| 20090139852 | Separation Method And Apparatus - A process and an apparatus for the separation of a feed by distillation into a low-boiler (A), a medium-boiler (B) and a high-boiler fraction (C). Separation takes place in one or more dividing-wall columns, in which a dividing wall is arranged in the longitudinal direction of the column to thereby form an upper, common column region, a lower, common column region, a feed part with rectifying section and stripping section, and a withdrawal region with rectifying section and stripping section. The feed of the C5+ cut is in the central region of the feed part. The high-boiler fraction (C) is discharged from the bottom of the column, the low-boiler fraction (A) is discharged via the top of the column, and the medium-boiler fraction (B) is discharged from the central region of the withdrawal part. A first heat source is provided for heating the lower column region. A second heat source is provided for heating the withdrawal part whereby the fraction in the withdrawal part is heated to a temperature which is lower than the temperature of the fraction in the lower column region. | 06-04-2009 |
| 20090247806 | Simulated Countercurrent Adsorptive Separation Process - A process is described for the separation of a first chemical compound from a liquid feed stream comprising at least first and second chemical compounds by simulated countercurrent adsorptive separation. In the process, the feed stream and a liquid desorbent stream are passed into at least one multi-bed adsorbent chamber at two different points via different transfer lines and an extract stream rich in the first chemical compound and a raffinate stream depleted in the first chemical compound are removed from the adsorbent chamber at two different points by two additional transfer lines. In addition, the contents of the transfer line which has just been used to supply the desorbent stream are flushed into the adsorbent chamber at a point along the chamber between the transfer line just used to supply the desorbent stream and the transfer line just used to withdraw the raffinate. | 10-01-2009 |
| 20100004493 | Integrated Process - The invention relates to the integration of plural processes around a single device. The plural processes are characterized by having at least two separate and distinct feedstreams, two separate and distinct products, or a combination thereof. | 01-07-2010 |
| 20100125163 | Separation Process - The invention relates to an improved absorption-type separation and/or purification processes having dual rotary valves. | 05-20-2010 |
| 20100152508 | Process for Producing Para-Xylene - A process for producing a PX-rich product, the process comprising: (a) providing a PX-depleted stream; (b) isomerizing at least a portion of the PX-depleted stream to produce an isomerized stream having a PX concentration greater than the PX-depleted stream and a benzene concentration of less than 1,000 ppm and a C | 06-17-2010 |
| 20100305381 | Parex Unit Feed - A process for separating a product from a multicomponent feedstream to an adsorption apparatus or system. The apparatus or system may comprise a moving-bed or a simulated moving-bed adsorption means. The product comprises at least one organic compound, such as an aryl compound with alkyl substitutes. In embodiments the conduits used to supply the feedstream to the apparatus or system are flushed with media of multiple grades. In embodiments the process achieves improvements in one or more of efficiency of adsorption separation, capacity of adsorption apparatus systems, and purity of product attainable by adsorption process. | 12-02-2010 |
| Patent application number | Description | Published |
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| 20080297967 | LIGHTNING PROTECTION SYSTEM FOR AN AIRCRAFT COMPOSITE STRUCTURE - An apparatus comprises a wall, an internal structure, and a fastener. The wall has a conductive surface and a countersunk hole. The countersunk hole passes through the internal structure. The fastener has an interference fit within the countersunk hole. | 12-04-2008 |
| 20090136294 | Multi-Piece Fastener with Self-Indexing Nut - According to a preferred embodiment, a multi-piece fastener with self-indexing nut is disclosed. The multi-piece fastener is designed for use in low clearance areas such as aircraft wing side-of-body joint locations. The multi-piece fastener comprises a stud comprising an elongated part extending between a first end face and a second end face, a threaded head fastener, a threaded tail fastener, and a wrenching feature. A self-indexing feature is provided on the stud and head fastener which allows automatic orientation of the head fastener with respect to the stud. | 05-28-2009 |
| 20090140038 | Production System And An Associated Index Device For Use As A Reference Feature - A production system for manufacturing a workpiece comprises an index system including a plurality of index devices removably mounted on the workpiece at known longitudinally spaced locations therealong, and a longitudinally extending index member releasably engaged with at least two of the index devices such that a position and orientation of the index member are fixed relative to the workpiece by the index devices, the index member having position-indicating features distributed therealong. The production system further comprises a machine module mounted for longitudinal movement along the index member and operable to perform an operation, the machine module being operable to detect the position-indicating features on the index member and thereby determine a position of the machine module relative to the workpiece. | 06-04-2009 |
| 20100020461 | Lightning Protection System for Aircraft Composite Structure - A lightning-protected conductive composite fuel tank includes a conductive material arrayed on an outer surface to at least partially cover a fastener centerline. Through holes extend along the fastener centerline through the conductive material and the underlying fuel tank shell. These through holes are countersunk into the fuel tank shell to a depth such that a fastener in a through hole will avoid electrical continuity or communication with the conductive material on the fuel tank outer surface. The gap in the countersunk through holes, between the fastener heads and the coextensive outer surface of the fuel tank, is filled with a dielectric or nonconductive material. | 01-28-2010 |
| 20100196120 | FASTENER RELIEF PATH - A fastener may include a shaft and a head. The shaft may have first and second opposing ends and a first surface having a first diameter. The head may be attached to the first opposing end of the shaft. The head may have a second surface comprising a second diameter which is larger than the first diameter. The head may have a third surface extending between the second surface and the first surface. The third surface may be defined by a relief slot extending from the second surface to at least one of near and to the first surface. The relief slot may be for providing a relief path to reduce pressure during installation, using a viscous compound, of the fastener to a member. | 08-05-2010 |
| 20110114356 | Ground Stud Installation on Composite Structures for Electrostatic Charges - Apparatus for bleeding electrical charge and methods for installing a ground stud in a composite structure. The apparatus includes a ground stud and a composite structure including a hole. In one embodiment the ground stud engages the hole in the composite structure in a transition fit. In another embodiment the ground stud is countersunk within the composite structure. Embodiments of the present methods include drilling a hole in the composite structure; inserting the ground stud into the hole such that the ground stud is in electrical contact with conductive fibers within the composite structure; securing the ground stud to the composite structure; and attaching a connective device to the ground stud such that the connective device is in electrical contact with the ground stud. In some embodiments the ground stud and the composite structure engage one another in a transition fit. In some embodiments the ground stud includes a pin, and a portion of the pin that contacts the composite structure is non-threaded. In some embodiments the ground stud is countersunk within the composite structure. | 05-19-2011 |
