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| Number | Title | Issue Date |
| 7753348 | Gas-liquid contact apparatus A tray assembly is provided for improved gas/liquid contact when used in a large chemical process tower, resulting in better performance. Each tray assembly has two levels of tray decks and associated downcomers. Tray decks provide gas/liquid contact for mass transf... | 07/13/2010 |
| 7648128 | Gas-liquid contact apparatus An apparatus is provided for improved gas/liquid contact in a chemical process tower, resulting in better performance. The apparatus includes a tower having a series of tray decks and downcomers. Tray decks provide gas/liquid contact for mass transfer and the downco... | 01/19/2010 |
| 7556734 | Liquid/liquid exchange column The contact between, for example, ascending liquid droplets of lighter liquid, as the dispersed phase, and heavier liquid, as the continuous phase, flowing across perforated trays in a flooded liquid/liquid contacting column, is enhanced by providing upstanding baff... | 07/07/2009 |
| 7445200 | Gas-liquid contactor baffle A gas-liquid contactor baffle includes a body having a first portion, a second portion and a middle portion, the middle portion being positioned between the first portion and the second portion. The middle portion is a corrugated sheet having a first face and a seco... | 11/04/2008 |
| 7270315 | Exchange column, perforated tray assembly In, for example, a gas-liquid, liquid/liquid exchange column, perforated tray assemblies are provided which have a plurality of adjacent tray sections with slots adjacent rounded leading edges of the sections, and catches extending along trailing edges which interlo... | 09/18/2007 |
| 7048835 | System and method for acetic acid recovery during terephthalic acid production A distillation system and method for recovering acetic acid from a feed stream containing acetic acid and water stream generated during terephthalic acid production. The invention includes a dehydration column utilizing azeotropic distillation to recover the acetic ... | 05/23/2006 |
| 6948705 | Gas/liquid contacting apparatus The lower, liquid collecting section of a gas/liquid contacting column has an entrained substance depleting duct extending therearound wherein gas, for example, steam is fed by the duct into the lower section, steam depleted by gravity of liquid droplets, is deflect... | 09/27/2005 |
| 6799752 | Method and apparatus for improving a fractionation process A method and apparatus for increasing fractionation capacity and efficiency within an existing distillation column having preexisting mass transfer surface structures with a multiplicity of openings for vapor-liquid contact is provided. Some embodiments of the prese... | 10/05/2004 |
| 6746003 | Gas-liquid contacting apparatus A gas-liquid contacting apparatus is provided wherein the perforated trays are divided into portions by a lattice-like pattern of downcomers which deliver liquid to central regions of the tray portions immediately below them. An odd number, X, for example three para... | 06/08/2004 |
| 6565071 | Liquid/gas contacting apparatus A liquid/gas contacting apparatus is provided wherein the perforated trays have an upper liquid repellent layer of a fluorocarbon polymer, to increase, and spread, liquid flow over the tray, and a rough underside for bursting any bubbles of any spray ther... | 05/20/2003 |
| 6422539 | Tray attachment apparatus An apparatus for connecting adjacent tray panel of a fractionation tray within a distillation column tower for the separation between a vapor and liquid is provided. A first interlocking panel has an alignment area with at least one alignment slot toward ... | 07/23/2002 |
| 6270062 | Fluids contacting, tray opening, fluid dispersing assembly A fluids contacting and dispersing apparatus for a fluids contacting column is provided comprising a perforated cover plate, means for positioning the cover plate over a tray opening and securing it within the opening. Deflecting members span each perfora... | 08/07/2001 |
| 6189872 | Froth activator apparatus and method The present invention provides an apparatus for use in the contact between a vapor and a liquid. In one embodiment, a column is provided having a generally vertical shell. A plurality of vertically spaced, horizontal fluid contacting trays for contacting ... | 02/20/2001 |
| 6145816 | Fluids contacting, tray opening, fluid dispersing assembly A fluids contacting and dispersing apparatus for a fluids contacting column is provided including a perforated cover plate, a device for positioning the cover plate over a tray opening and securing it within the opening. Deflecting members span each perfo... | 11/14/2000 |
| 6053485 | Apparatus for tray valve attachment An apparatus and method for attaching a dispersion valve to a fractionation tray surface. The valve is inserted into a fractionation tray perforation. At least two legs extend downward from a cover plate with a larger area than the perforation. Each of th... | 04/25/2000 |
