Patents Assigned to ILLA International, LLC
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Patent number: 8575398Abstract: The purpose of the present invention is to provide an advantageous non-barbotage method for oxidation of hydrocarbons, that, when implemented in various embodiments thereof, provides significantly higher selectivity, a greater level of safety, lower capital costs, etc., than conventional oxidation processes utilizing the barbotage technique. The essence of the inventive non-barbotage oxidation process is ensuring that the oxidizing agent delivered to the process reactor undergoes continued contact only with exposed surfaces of the liquid phase of the hydrocarbons being oxidized configured as at least one of: formed liquid phase thin film(s), liquid phase continuous stream(s), and/or liquid phase globule (e.g., droplets, etc.Type: GrantFiled: October 29, 2010Date of Patent: November 5, 2013Assignee: Illa International, LLCInventor: Vladimir Mikhailovitch Zakoshansky
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Publication number: 20110319668Abstract: The purpose of the present invention is to provide an advantageous non-barbotage method for oxidation of hydrocarbons, that, when implemented in various embodiments thereof, provides significantly higher selectivity, a greater level of safety, lower capital costs, etc., than conventional oxidation processes utilizing the barbotage technique. The essence of the inventive non-barbotage oxidation process is ensuring that the oxidizing agent delivered to the process reactor undergoes continued contact only with exposed surfaces of the liquid phase of the hydrocarbons being oxidized configured as at least one of: formed liquid phase thin film(s), liquid phase continuous stream(s), and/or liquid phase globule (e.g., droplets, etc.Type: ApplicationFiled: October 29, 2010Publication date: December 29, 2011Applicant: ILLA INTERNATIONAL, LLC.Inventor: Vladimir Mikhailovitch Zakoshansky
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Patent number: 8013191Abstract: A two-step method of crude phenol treatment from impurities, wherein a first step comprises oxidizing hydroxyacetone and aldehydes impurities, in phenol medium by air oxygen with the use of a heterogeneous catalyst which contains transition metals, and a second step comprises treating the unoxidized impurities with the use of a heterogeneous acidic catalyst. The separation of treatment by-products compounds produced during said phenol treatment may then be carried out by a conventional fractionation, distillation, or equivalent method, to produce highly purified product phenol.Type: GrantFiled: July 19, 2006Date of Patent: September 6, 2011Assignee: Illa International, LLCInventors: Vladimir Mikhailovitch Zakoshansky, Irina Ivanovna Vassilieva, Yuri Nikolaevich Koshelev, Yuri Ivanovitch Malov
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Publication number: 20090171126Abstract: The purpose of the present invention is to provide an advantageous method for accelerating the cumene oxidation reaction without the drawbacks of the above-described previously known approaches by utilizing one or more airlift-type tray installed in one or more conventional commercial reactors utilized during the cumene oxidation process. Such a method is of great use in process configurations where it is desirable to achieve a controlled acceleration of the cumene oxidation process without decreasing process selectivity.Type: ApplicationFiled: June 30, 2008Publication date: July 2, 2009Applicant: ILLA INTERNATIONAL, LLCInventors: Vladimir Mikhailovitch Zakoshansky, Andrey Victorovitch Budarev
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Patent number: 7393984Abstract: A continuous method of cumene oxidation in a gas-liquid system is provided, where the liquid phase is represented by cumene and its oxidation products and the gas phase is represented by air. The oxidation process can be carried out either in a reactor series or in a single reactor at least one of which is preferably equipped with at least two airlift-type trays. When specific CHP concentration is achieved, the oxidation products are discharged from the to reaction zone and treated in a mixing device with aqueous ammonia or water to remove organic acids such as formic acid, benzoic acid, etc. and to remove phenol, which is an inhibitor of oxidation reaction. The cumene oxidation product stream, free of organic acids and phenol is recycled to the same reactor in the case of single reactor, or is passed to the next reactor of the series in the case of reactor series.Type: GrantFiled: November 1, 2007Date of Patent: July 1, 2008Assignee: ILLA International, LLCInventors: Vladimir Zakoshansky, Irina Vassilieva, Andrey Budarev, Vasiliy Trubaev, Sergey Korchagin
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Patent number: 6943270Abstract: A cumene process of producing phenol and acetone comprises the joint oxidation of aldehydes and dimethylbenzene alcohol by aqueous hydrogen peroxide solutions in presence of 16 wt % to 94 wt % of cumene hydroperoxide by contacting of mutually insoluble phases of the organic products from a cumene oxidation stage and hydrogen peroxide containing water with optional addition of acidic catalysts in a conversion reactor for the purpose of conversion of aldehydes into organic acids and dimethylbenzene alcohol into cumene hydroperoxide and therefore significantly simplifying the process of fractionation of organic conversion products into high quality product phenol and product acetone.Type: GrantFiled: February 28, 2001Date of Patent: September 13, 2005Assignee: Illa International, LLCInventor: Vladimir Mikhailovitch Zakoshansky
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Patent number: 6331654Abstract: Disclosed is a method for the production of product acetone of higher oxidation stability where the product acetone is produced by a multi-step rectification process in the presence of alkali catalyst. The embodiments of the method of present invention utilize a two-column and a one-column scheme of product acetone rectification from an acetone stream. In a two-column embodiment of the present invention, acetone is taken off in a vapor phase as a side-draw in a first column and directed to a partial condenser wherein it is separated into liquid and vapor phases with a simultaneous feed of aqueous sodium hydroxide solution to the first column above the feed tray.Type: GrantFiled: February 10, 2000Date of Patent: December 18, 2001Assignee: Illa International LLCInventors: Vladimir Mikhailovitch Zakoshansky, Irina Ivanovna Vassilieva
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Patent number: 6252124Abstract: A new phenol and acetone production process reduces the amount of necessary stages for obtaining phenol and acetone, results in higher yield of desired products and requires less complex equipment implementation and less energy than current processes of a similar type.Type: GrantFiled: April 29, 1999Date of Patent: June 26, 2001Assignee: ILLA International, LLCInventors: Vladimir Mikhailovitch Zakoshansky, Irina Ivanovna Vassilieva
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Patent number: 6066767Abstract: Purification of cumene hydroperoxide cleavage products from hydroxyacetone and carbonyl compounds is accomplished via extraction of hydroxyacetone and carbonyl compounds from cleavage products with a circulating water-salt solution in an extractor during an extraction stage and subsequent conversion of hydroxyacetone and other carbonyl compounds into deep condensation products in a HAC reactor operating as a plug-flow reactor or mixing reactor or as their combination. The conversion/condensation process is conducted in the water-salt solution by treating the hydroxyacetone and carbonyl compounds with alkaline agents. Various homogenous and/or heterogeneous alkaline catalysts may be used. Optionally multiple sequential extraction stages may be connected to the HAC reactor for improved performance.Type: GrantFiled: February 10, 1999Date of Patent: May 23, 2000Assignee: ILLA International, LLCInventors: Vladimir Mikhailovitch Zakoshansky, Irina Ivanovna Vassilieva
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Patent number: 6057483Abstract: Disclosed is a process for the cleavage of technical cumene hydroperoxide (CHP) into phenol, acetone and .alpha.-methylstyrene. In a first stage, the CHP cleavage process is conducted in such a way to maintain the heat generation rate and the heat removal rate balanced in each of the CHP cleavage reactors. The cleavage of the CHP is conducted under substantially isothermal conditions at a temperature in the range of 47-50.degree. C. In the second stage of the process dicumylperoxide (DCP) and dimethylbenzene alcohol (DMBA) cleavage is carried out in a multi-section plug-flow reactor under non-isothermal conditions at a controlled temperature increase. The temperature is controlled with the use of thermocouples installed in each section of the reactor. The obtained temperature profile is compared with the temperature profile required by the kinetic model based on .DELTA.T in each section of the reactor.Type: GrantFiled: September 4, 1998Date of Patent: May 2, 2000Assignee: Illa International, LLCInventors: Vladimir Mikhailovitch Zakoshansky, Andrei Konstantinovitch Griaznov, Irina Ivanovna Vassilieva