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| Application No. | Application Title | Issue Date |
| 20120000764 | METHOD AND SYSTEM FOR PURIFYING MONOMERS The present invention relates to a process for purifying monomers, by evaporating at least a portion of the monomers present in a starting composition and then condensing it, which is characterized in that at least a portion of the starting composition is evaporated in ... | 01/05/2012 |
| 20120004472 | METHOD FOR PREPARING POLYMETHYLOLS The present invention relates to a process for distilling an aqueous polymethylol mixture which comprises a polymethylol of the formula (I)
| 01/05/2012 |
| 20110189320 | EDIBLE OLIVE POMACE OIL CONCENTRATED IN TRITERPENIC ACIDS, PROCEDURE OF PHYSICAL REFINING UTILISED FOR OBTAINMENT THEREOF AND RECOVERY OF FUNCTIONAL COMPONENTS PRESENT IN THE CRUDE OIL Procedure of refining crude olive pomace oil obtained through centrifuging or decantation of the pomace, comprising the stage of filtration of the starting crude olive pomace oil carried out through filters having a pore size comprised in the interval from 0.1 to 20 mic... | 08/04/2011 |
| 20110139604 | Dividing wall column for fractionation of a multicomponent mixture A dividing wall column comprises the following segments: a) an upper column region (1), b) an enrichment section (2) of the feed section, c) a stripping section (4... | 06/16/2011 |
| 20100320073 | SYSTEMS AND METHODS FOR TREATING FRACTIONATED WATER One embodiment of a method of water treatment comprising straining fractionated water to remove particles larger than one micron in diameter, decanting the strained fractionated water to remove surfactants and oil, evaporating the decanted water to provide concentrated ... | 12/23/2010 |
| 20100320072 | PROCESSING OF CHLOROSILANE FLOWS CONTAINING BORON The invention relates to a method for yielding boron-depleted chlorosilanes from a chlorosilane mixture containing boron by means of separation by distillation of a boron-enriched distillation flow. The invention further relate to a device for yielding boron-depleted ch... | 12/23/2010 |
| 20100122899 | SMALL-SCALE METHOD AND APPARATUS FOR SEPARATING MIXTURES The present invention generally relates to the small-scale separation of a mixture of two or more components with different boiling points into enriched fractions. In some embodiments, a first and second fluid (e.g., a liquid and a gas, a liquid and a liquid, etc.) are ... | 05/20/2010 |
| 20100036170 | Alkylene oxide purification processes and systems Processes and systems for purifying ethylene oxide, including introducing a feed stream including ethylene oxide to a heat exchanger to heat the feed stream, feeding the heated feed stream to a distillation apparatus base below a first stage, removing from the distillat... | 02/11/2010 |
| 20090288940 | Distillation Process The process employs at least two distillation zones located within a column shell to produce an overhead and bottoms product from the first distillation zone and an intermediate product from the second distillation zone. Fluid is withdrawn from a side draw stage in the ... | 11/26/2009 |
| 20080206445 | Selective separation processes This invention relates to a separation process comprising (i) introducing a vapor phase mixture into a condensing apparatus, said vapor phase mixture comprising at least one desirable component and at least one undesirable component; (ii) controlling the temperature in ... | 08/28/2008 |
| 20080196587 | CO2 SEPARATION APPARATUS AND PROCESS FOR OXY-COMBUSTION COAL POWER PLANTS An improved process for the separation of carbon dioxide from the flue gas of an oxy-combustion power plant is provided. The flue gas is compressed, cleaned, cooled and dried. This clean, compressed dry flue gas is then further cooled, partially condensed and separated ... | 08/21/2008 |
| 20080044572 | RIGHT-SIZED VACUUM PRECURSOR (RSVP) DISTILLATION SYSTEM A method for purifying a precursor material for use in a chemical vapor deposition system comprising providing a precursor material suitable for chemical vapor deposition, and distilling the precursor material to provide, as a distillate, a purified precursor material f... | 02/21/2008 |
| 20070227875 | Method of Distilling Product Mixtures The invention relates to a method of separating product mixtures, especially using a distillation column, it being possible preferably for the method to be used in purifying 1,2-dichloroethane. By that means, impurities and/or subsidiary products (high-boilers and low-b... | 10/04/2007 |
| 20070193874 | Method and device for improved fermentation process An improved method and device is accomplished for ethanol production using an in-line extraction of ethanol by ultrasonic atomization, thereby removing the effect of the ethanol inhibition factor that adversely affects the rate and yield. The in-line removal of ethanol ... | 08/23/2007 |
| 20070131535 | Utilizing ionic liquids for hydrofluorocarbon separation The present invention relates to a process for separating close-boiling and azeotropic components of mixtures, wherein said mixtures comprise at least one hydrofluorocarbon compound, using at least one ionic liquid. ... | 06/14/2007 |
| 20070080052 | Distillative merthod for separating narrow boiling or azeotropic mixtures using ionic liquids A process for separating azeotropic or close-boiling mixtures by means of an extractive rectification in which an ionic liquid is used as entrainer, wherein a high boiling bottom product is taken off from the column in vapor form via a side offtake. ... | 04/12/2007 |
| 20070039813 | Method for obtaining crude 1,3-butadiene from a c4 fraction A process for recovering crude 1,3-butadiene from a C4 fraction by extractive distillation using a selective solvent in a dividing wall column (TK) in which a dividing wall (T) is arranged in the longitudinal direction of the column to form a first subregion ... | 02/22/2007 |
| 20060272934 | Recycling of ionic liquids produced in extractive distillation Process for working up a bottom stream comprising high boilers and ionic liquid from an extractive rectification in which the ionic liquid is used as entrainer, which comprises feeding the bottom stream to an evaporation stage which is operated at a pressure of less tha... | 12/07/2006 |
| 20060266635 | Method for obtaining oligomers of polytetrahydofurane or tetrahydrofurane A process for obtaining oligomers of polytetrahydrofuran or of tetrahydrofuran copolymers from a methanolic crude product which contains polytetrahydrofuran or tetrahydrofuran copolymers and is obtained in the transesterification of the mono- and/or diesters of polytetr... | 11/30/2006 |
| 20060243584 | Method for avoiding corrosion The invention relates to a method of avoiding corrosion in the separation of methylamine from a product stream (10) which is obtained in the preparation of methylamines by gas-phase reaction of methanol and ammonia and comprises monomethylamine, dimethylamine, tr... | 11/02/2006 |
| 20060237366 | Solvent removal process A process for removing a solvent from a first solution, said process comprising positioning a selective membrane between the first solution and a second solution having a higher osmotic potential than the first solution, such that solvent from the first solution passes ... | 10/26/2006 |
| 20060219545 | Method for the purification of dimethylacetamide (dmac) The invention relates to a process for distillatively purifying crude dimethylacetamide (crude DMAc) comprising DMAc, low boilers and high boilers 5 by removing the low boilers and the high boilers to obtain pure DMAc in one of the column configurations listed he... | 10/05/2006 |
| 20060175189 | Method of producing and separating dinitrile compounds The present invention relates to a process for the manufacture and separation of dinitrile compounds. It relates more particularly to a process for the manufacture and separation of dinitrile compounds from a medium originating from the hydrocyanation of unsaturated mon... | 08/10/2006 |
| 20060157336 | Dividing-wall column with feed in whole or in part in the vaporous state and/or side stream take off in whole or in part in the vaporous state A dividing-wall column having a dividing wall which is essentially disposed along the long direction of the column is proposed, which divides the column interior into a feed part, a take off part, an upper shared column part and a lower shared column part, with feed in ... | 07/20/2006 |
| 20060151310 | Method for the distillative separation of a mixture containing vinyl ether and alchol Process for distillatively separating a mixture containing a vinyl ether of the general formula (I) R1—O—CH═CH2 (I) and alcohol of the general formula (II) R2 07/13/2006 | |
| 20060113180 | Purification of propylene oxide resulting from epoxidation of propylene with hydrogen peroxide A process of separating a purified propylene oxide from a crude epoxidation product produced, preferably, in an epoxidation reaction of propylene with hydrogen peroxide. The process involves removing bulk water, bulk methanol, and unreacted propylene from the crude epox... | 06/01/2006 |
| 20060006056 | Process for obtaining fatty acids with improved odor, color and heat stability Disclosed is a new process for obtaining fatty acids with improved color, odor and heat stability which is characterized in that (a) in a first step the crude acids are fed to a rectification (“precut”) column in order to remove low boiling by-products being present... | 01/12/2006 |
| 20060000703 | High capacity purification of thermally unstable compounds Separations processes and apparati capable of purifying thermally sensitive materials at high capacity. An apparatus having a rectification section and a stripping section with the stripping section having a stripping tray with 5 to 50% open area, a pressure drop from 0... | 01/05/2006 |
| 20050269266 | Apparatus and method for osmotic membrane distillation A method of enhancing the concentration of a first inorganic compound in a first aqueous solution of a first process of a heavy chemical plant, the method comprising (a) feeding the first solution having the first compound at a first concentration and a first water vapo... | 12/08/2005 |
| 20050258026 | Method for the continuous purification by distillation of the solvent methanol, used in the synthesis of propylene oxide Process for the continuously operated purification by distillation of the methanol used as solvent in the synthesis of propylene oxide by reaction of a hydroperoxide with propylene, with the methoxypropanols being separated off simultaneously, wherein the solvent mixtur... | 11/24/2005 |
| 20050258025 | Method for purifying tetrahydrofuran by distillation The present invention provides a process for distillatively purifying crude water-containing tetrahydrofuran by passing the crude tetrahydrofuran through three distillation columns, withdrawing water from the bottom of the first column, recycling water-containing tetrah... | 11/24/2005 |
| 20050252762 | Method for the continuous purification by distillation of methanol, used as a solvent in the synthesis of propylene oxide without coupling products, with the simultaneous isolation of the methoxy propanols Continuously operated process for the purification by distillation of the methanol used as solvent in the synthesis of propylene oxide by reaction of a hydroperoxide with propylene, with the methoxypropanols, as azcotrope with water, and the low boilers and high boilers... | 11/17/2005 |
| 20050252761 | Distillative preparation of ipda having a high cis-trans isomer ratio The invention relates to a process for recovering 3-aminomethyl-3,5,5-trimethylcyclohexylamine(isophoronediamine, IPDA) having a cis/trans isomer ratio of at least 73/27 by fractional distillation, which comprises the following steps: a) providing IPDA in a cis/trans is... | 11/17/2005 |
| 20050211541 | Method for continuously operated pure distillation of oxirane, especially propylene oxide The invention relates to a continuously operated process for the purification by distillation of the oxirane formed in the oxirane synthesis by reaction of a hydroperoxide with an organic compound, wherein the crude oxirane is separated in a dividing wall column into lo... | 09/29/2005 |
| 20050199482 | Method and device for extractive distillation A process for fractionating a starting mixture of two or more components by extractive distillation using a selective solvent in a dividing wall column aligned in the longitudinal direction of the column and extending to the upper end of the column and dividing the colu... | 09/15/2005 |
| 20050115820 | Method for production of a liquid composition of an ortho-dihydroxybenzyl compound of high purity and said composition The invention relates to a process for the preparation of a liquid composition of an ortho-dihydroxybenzyl compound of high purity characterized in that it consists inpurifying the initial ortho-dihydroxybenzyl compound by distillation and recovering the condensed ortho... | 06/02/2005 |
| 20050034970 | Process for the preparation of phenolic compounds, for separating phenol from cleavage product mixtures, and an apparatus To improve energy efficiency of prior art processes while preserving the standards of quality and total yield of desired end products, a process for the preparation of phenolic compounds is proposed. The process of the invention comprises working-up of the cleavage prod... | 02/17/2005 |
| 20050000791 | Process for fractionating water-containing crude amine mixtures from amine synthesis A process for fractionating an amine-containing mixture which comprises one or more amines, water, low-boilers and high-boilers, having the steps (i) to (iv): (i) separating off by distillation low-boilers from the amine-containing mixture, (ii) separating off by distil... | 01/06/2005 |
| 20050000790 | METHOD FOR ISOLATING AMINES FROM AQUEOUS SOLUTIONS A process for the isolation of amines from aqueous solutions by continuous distillation of aqueous solutions of the amines by a two-pressure method of rectifying aqueous solutions of amines which form with water an azeotrop, the composition of which is pressure-dependen... | 01/06/2005 |
