| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 203071000 | PLURAL DISTILLATIONS PERFORMED ON SAME MATERIAL | 42 |
| 20090084668 | Toluene production - A method for optimizing the production of nitration grade toluene from a solvent extraction process that produces an aromatic rich extract and a saturate rich raffinate, comprising adding an effective amount of the raffinate back to the extract. | 04-02-2009 |
| 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 Fluid is withdrawn from a side draw stage in the first distillation zone and passed through a conduit to the second distillation zone. A partition envelopes the second distillation zone to prevent mass transfer with the first distillation zone proximate the partition. The second distillation zone may be located relative to the first distillation zone to benefit from heat transfer across the partition. | 11-26-2009 |
| 20100193348 | CONTINUOUS PROCESS FOR PREPARING NERAL IN PURE OR ENRICHED FORM - The present invention relates to a continuous process for preparing neral (cis-citral) in pure or enriched form by distillatively separating neral from substance mixtures comprising essentially neral and geranial (trans-citral). This distillative separation is performed in a dividing wall column or in a connection of two distillation columns in the form of a thermal coupling. | 08-05-2010 |
| 20110011726 | DISTILLATION DEVICE - A distillation device ( | 01-20-2011 |
| 20130270101 | STRAIN-FREE STATIONARY FURNACE DOOR ACTUATOR FOR A COKE FURNACE BATTERY OF THE "HEAT-RECOVERY" TYPE - A strain-free stationary furnace door actuator for a coke furnace battery of the “non-recovery” or “heat-recovery” type, by way of which vertical opening of the coke furnace chamber doors is possible without the use of a coke furnace operating machine, wherein the deviations of the tension elements of the furnace door actuator from the intended arrangements, which result from strain of the transmitting devices, and undesired increases in tension force, which result from differences in the adhesion forces of the coke furnace chamber doors during closure, are avoided by the use of low-strain transmitting devices and tension elements. A method for the strain-free, stationary actuation of the door of a coke furnace battery of the “heat-recovery” type is also disclosed. The method uses rigid tension elements and low-strain transmitting devices for automatically opening and closing coke furnace chamber doors. | 10-17-2013 |
| 20150041307 | SPLIT-SHELL FRACTIONATION COLUMNS AND ASSOCIATED PROCESSES FOR SEPARATING AROMATIC HYDROCARBONS - Split-shell fractionation columns and associated processes for separating aromatic hydrocarbons are provided herein. In an embodiment, a split-shell fractionation column includes a housing shell having a first height and a partition having a second height and disposed within the housing shell. The partition includes first and second vertically oriented baffles separated by a gap region, a seal plate connecting top ends of the baffles, a first input port formed to extend through the partition for the introduction of a gas into the gap region, and a first output port formed to extend outwardly from a bottom of the gap region and through the housing shell. The partition defines a first distillation zone and a second distillation zone within the housing shell. | 02-12-2015 |
| 203072000 | One a filming distillation | 3 |
| 20110089016 | PURIFICATION OF AQUEOUS SOLUTIONS OF ORGANIC ACIDS - The invention relates to a method and a device for the purification of an aqueous solution of an organic acid having a boiling point at atmospheric pressure of less than 450° C., which further has approximately 275 g carboxylate ions/l or less, preferably 250 g carboxylate ions/l or less, and preferably less than 1% by weight ionic impurities, calculated on the basis of the total solution. In particular, the invention relates to a method and a device for the continuous purification and concentration, on an industrial scale, of an aqueous solution of an organic acid having a boiling point at atmospheric pressure of less than 450° C. According to the method, this solution is subjected to two or more distillation steps, the first distillation step being carried out at a temperature of from 80° to 150° C. and a pressure of from 50 to 250 mbar, and the second distillation step being carried out at a temperature of from 80° to 200° C. and a pressure of from 0.01 to 50 mbar. | 04-21-2011 |
| 20110226606 | FALLING FILM EVAPORATOR - A falling film evaporator having a shell pass, multiple tubes parallel to each other, a condensed steam outlet, an inlet for an aqueous solution on the top of the tube pass, an outlet for the aqueous solution at the bottom of the tube pass, a distributing assembly having a plurality of distributing trays arranged vertically from top to bottom in incremental diameters and each having multiple holes, and a plate for collecting the aqueous solution below the distributing assembly. The tubes are straight and installed vertically in the evaporator; inner wall of the tubes is smooth, and the top portion of the tubes is protruded above a horizontal plane of the plate. The evaporator is particularly useful for concentrating an aqueous solution containing thermosensitive materials. | 09-22-2011 |
| 20140183031 | Process for the Treatment of a Recycling Stream from a Plant for the Production of Polyarylene Ether Sulfones - A process is proposed for the treatment of a recycling stream ( | 07-03-2014 |
| 203073000 | One a distillation under positive pressure or vacuum | 18 |
| 20130118893 | HIGH- AND LOW-VISCOSITY ESTOLIDE BASE OILS AND LUBRICANTS - Provided herein are compounds of the formula: | 05-16-2013 |
| 203074000 | Distillation of initial distillate | 13 |
| 20120193214 | PROCESS FOR PURIFYING CHLOROSILANES BY DISTILLATION - The invention relates to a process for purifying chlorosilanes by distillation, which includes providing a boron-containing mixture of chlorosilanes containing TCS, DCS and STC and purifying the mixture of chlorosilanes by distillation in a plurality of distillation columns, wherein low-boiling boron compounds are branched off from the distillation columns by means of overhead streams containing boron-enriched DCS and high-boiling boron compounds are branched off by means of a boron-enriched bottom stream containing high boilers. | 08-02-2012 |
| 20140183032 | PROCESS FOR THE TREATMENT OF A RECYCLING STREAM FROM A PLANT FOR THE PRODUCTION OF POLYARYLENE ETHER - A process is proposed for the treatment of a recycling stream ( | 07-03-2014 |
| 203075000 | And return of distillation product to a previous distillation zone | 4 |
| 20090205946 | Integrated Compressor/Stripper Configurations And Methods - Contemplated solvent regenerators include a flash drum in which lean solvent from the regenerator is flashed, and from which supplemental steam is recovered that is then fed back to the regenerator using a compressor, and most preferably a thermocompressor. Such devices have a substantially reduced net steam and energy requirement despite an increase in electrical energy demand, and further maintain a neutral water balance in the regenerator. | 08-20-2009 |
| 20100084257 | METHOD FOR THE CONTINUOUS SEPARATION OF MIXTURES COMPRISING MORPHOLINE (MO), MONOAMINODIGLYCOL (ADG), AMMONIA AND WATER BY MEANS OF DISTILLATION - Processes for the continuous fractional distillation of a mixture comprising morpholine (MO), monoaminodiglycol (ADG), ammonia and water from a reaction of diethylene glycol (DEG) with ammonia, the process comprising: (i) separating off ammonia from the mixture at a top of a first distillation column K | 04-08-2010 |
| 20160060567 | A PROCESS FOR TREATING FATS AND OILS - Disclosed is a process for de-acidification of fats and oils, to obtain micronutrients, to obtain a fatty acid product, and recovery of refined oils, comprising: feeding pre-treated oil feed stream to a vacuum steam stripping section, stripping off volatile phases. Feeding the stripped off the volatile phases to a condensing stage providing a condensed phase and a vapour phase. Sending the condensed phase to a vacuum distillation operation and sending the vapour phase to a cold condensation stage. Subjecting the condensed phase to a vacuum distillation operation, and obtaining a high temperature distillate and a stream of volatiles. Feeding the vapour phase from the high temperature condensing stage along with the stream of volatiles from the vacuum distillation operation to the cold condensation stage obtaining a stream of non-condensable gases and a cold temperature distillate, letting the stream of non-condensable gases continue to a vacuum system, and recovering from the vacuum steam stripping section a stream of refined oil. | 03-03-2016 |
| 20160074770 | METHOD AND APPARATUS FOR THE SEPARATION BY DISTILLATION OF A THREE- OR MULTI-COMPONENT MIXTURE - A method and apparatus for distillative separation of a mixture comprising three or more components including at least one low boiler, at least one medium boiler, and at least one high boiler, the method comprising feeding the mixture of three or more components to a first distillation column, removing the at least one high boiler as a bottom fraction from the first distillation column, feeding a top fraction of the first distillation column to a second distillation column, removing the at least one medium boiler via a sidestream takeoff from the second distillation column, removing the at least one low boiler as a top fraction from the second distillation column, and feeding a bottom takeoff stream from the second distillation column to the first distillation column as a reflux, wherein the first and the second distillation columns have vertical dividing walls. | 03-17-2016 |
| 203076000 | Including the addition of water or steam | 2 |
| 20100314241 | PROCESS FOR THE TREATMENT OF ORGANIC WASTE AND PRODUCT OBTAINED THEREOF - A multi-stage process for the treatment of organic waste comprising: (a) drying the sewage sludge waste to reduce the water content to below 15%; (b) mixing of dried sewage sludge with solvent medium for slurry preparation; (c) subjecting slurry from step (b) to a theπno-chemical liquefaction process in the presence of a solvent medium at a temperature of about 275° C. to 37S0C and a pressure of up to 10 atmospheres, thereby obtaining gaseous, liquid and solid products in the form of Slurry Product | 12-16-2010 |
| 20150144479 | DEACIDIFICATION OF FATS AND OILS - The invention relates to method for deacidification of fats and oils comprising: feeding stream ( | 05-28-2015 |
| 203077000 | Initial distillation under positive pressure or vacuum | 5 |
| 20090114523 | Method for treating condensates form polycodensates - The invention relates to a method for treating vapours and condensates which arise during the production of polycondensates from bisphenols or high-value phenols by esterification and/or transesterification with alkyl or aryl esters of at least bivalent organic or inorganic acids. According to the invention, the treatment is carried out in a plurality of condensates and/or distillation columns which are connected in a step-by-step manner behind each other, each distillation column comprising a connected condensate. The dew point and the pressure in each condensate are adjusted such that in each step, monomers, oligomers or decomposition and transformation products are removed. | 05-07-2009 |
| 20120103786 | SEPARATION OF AROMATIC ALDEHYDES - A method for separating and recovering an aromatic aldehyde from a mixture thereof that also contains tar and light and heavy impurities, includes feeding the liquid flow containing this mixture into an evaporator, vaporizing the mixture in order to separate, on the one hand, a gaseous flow containing the aromatic aldehyde, the light impurities, the heavy impurities that can be vaporized at the selected evaporation temperature and pressure and, on the other hand, a liquid flow essentially containing the tar, and recovering the aromatic aldehyde from the separated gaseous flow. | 05-03-2012 |
| 20120241309 | Process for Purifying Processing Fluids - A closed loop process for recovering purified processing fluid from contaminated processing fluid. The contaminated processing fluid is subjected to a first separation step, and there is recovered a first stream comprising the bulk of the processing fluid substantially free of contaminants, and a second stream containing processing fluid with concentrated levels of contaminants. The second stream is subjected to a second separation zone to produce a third stream comprising purified processing fluid and a fourth stream comprising contaminants. | 09-27-2012 |
| 20130175158 | DEVICE FOR PRODUCING ETHANOL AND METHOD FOR PRODUCING ETHANOL - Disclosed are a method for producing ethanol and a device for producing ethanol that are suitable to the recycled use of an enzyme. | 07-11-2013 |
| 20150298022 | PROCESS FOR THERMAL SEPARATION OF A SOLUTION - A process for thermal separation of a solution comprised of a thermoplastic polymer and a solvent involves heating a solvent under pressure above a critical point of the solvent; decompressing the heated solvent in a first vessel, such that a polymer-rich and a low-polymer phase form; and supplying the polymer-rich phase to a second vessel. In embodiments, on entry into the second vessel, a pressure jump occurs, the pressure jump leading to a thermal flash in the second vessel such that a polymer part of the polymer-rich phase rises to at least 70%, and a resulting polymer-rich solution is provided. | 10-22-2015 |
| 203078000 | And returning distillation product to a previous distillation zone | 1 |
| 20090071814 | METHOD FOR CONCENTRATING HEAVY NITROGEN ISOTOPE - The object of the present invention is to provide a method for concentrating effectively the heavy nitrogen isotope | 03-19-2009 |
| 203079000 | Including the addition of water or steam | 1 |
| 20110233045 | METHOD OF PURIFYING HYDROCHLORIC ACID - Provided is a method of purifying hydrochloric acid by removing an organic substance having a boiling point of −25° C. to 120° C. under atmospheric pressure from a first organic substance-containing hydrochloric acid that contains the organic substance and has a hydrogen chloride concentration higher than an azeotropic hydrogen chloride concentration under atmospheric pressure. The method includes the step of subjecting a second organic substance-containing hydrochloric acid to distillation using a distillation tower under atmospheric pressure, to distill out the organic substance from a top of the distillation tower. The second organic substance-containing hydrochloric acid is obtained by mixing the first organic substance-containing hydrochloric acid and water or dilute hydrochloric acid and has the hydrogen chloride concentration lower than the azeotropic hydrogen chloride concentration under atmospheric pressure. | 09-29-2011 |
| 203080000 | Initial distillation under positive pressure or vacuum | 2 |
| 20090000939 | Membrane Distillation Process and Membrane Distillation Device - In a membrane distillation process in which a liquid to be concentrated is separated from a vapour space ( | 01-01-2009 |
| 20100059359 | SEPARATION AND PURIFICATION OF HYDROQUINONE FROM CRUDE MIXTURES THEREOF - Separation and purification of hydroquinone from crude mixtures thereof essentially containing hydroquinone in combination with very small amounts of impurities including resorcinol and pyrogallol, include a topping distillation allowing the resorcinol to be removed as the distillation top product, and allowing a crude mixture essentially containing hydroquinone and the heavy impurities to be recovered at the column bottom, such mixture then being subjected to a bottoming distillation which allows the pyrogallol to be removed at the column bottom and allows hydroquinone in a purified form to be recovered at the column top. | 03-11-2010 |
| 203081000 | Distillation of initial distillate | 13 |
| 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 chlorosilanes from a chlorosilane mixture containing boron. | 12-23-2010 |
| 20110147196 | Recovery of propane purge stream from a propylene oxide production process - A process for recovering a purified propane purge comprising fractionating in a first distillation column a feed stream comprising 2 to 10 wt % methanol, 5 to 20 wt % propylene, and 70 to 90 wt % propane thereby producing a first light product stream and a first heavy product stream, the first heavy product stream comprising less than 1.5 wt % propylene, and an amount of methanol that is at least 70 wt % of the methanol present in the first distillation column feed stream; and fractionating the first heavy product stream in a second distillation column at a pressure from 220 to 258 psia, thereby producing a second light product stream and a second heavy product stream, the second light product stream comprising at least 96 wt % propane and less than 1 wt. % methanol, and wherein an amount of propane present in the second light product stream is 20 to 45 wt % of the propane present in the first distillation column feed stream. | 06-23-2011 |
| 20110168542 | DEVICES AND METHOD FOR CONTINUOUS DISTILLATIVE SEPARATION OF A MIXTURE CONTAINING ONE OR MORE ALKANOLAMINE(S) - Apparatus and processes for continuous distillative separation of a mixture comprising one or more alkanolamine(s), wherein the separation is performed in one or more dividing wall column(s) and the alkanolamine or the alkanolamines is/are withdrawn as a side draw stream or side draw streams (side fraction(s)). | 07-14-2011 |
| 20110303526 | DIVIDED WALL DISTILLATION COLUMN FOR PRODUCING HIGH PURITY NORMAL BUTANOL, AND NORMAL BUTANOL DISTILLATION METHOD - The present invention relates to a dividing wall distillation column for producing high-purity n-butanol, and a method for the production of high-purity n-butanol by fractional distillation. More particularly, the present invention relates to a method which provides a dividing wall distillation column with crude n-butanol as a feed to perform a fractional distillation of n-butanol, and an apparatus thereof. The dividing wall distillation column of the present invention exhibits the effects of a two distillation column from only one distillation column, thereby reducing energy and the costs of installing the apparatus as compared to conventional distillation systems. | 12-15-2011 |
| 20120267233 | ENERGY-SAVING DISTILLATION COLUMN ASSEMBLY - Provided is a distillation column assembly combining two distillation columns used in a distillation process. The distillation column assembly is characterized in that a dividing wall column (DWC) that has one inflow point, three outflow points and an internal dividing wall and a typical distillation column that has two inflow points and two outflow points are sequentially connected to each other, and in that streams of the two outflow points of the DWC are introduced into the two inflow points of the typical distillation column. The distillation column assembly improves an existing process apparatus based on two distillation columns, so that it can be easily installed, has a high energy-saving effect, and can be applied to the case where a separation pressure difference and a utility temperature difference are great. | 10-25-2012 |
| 20130334029 | DIVIDING WALL DISTILLATION COLUMNS FOR PRODUCTION OF HIGH-PURITY 2-ETHYLHEXANOL AND FRACTIONATION METHOD USING SAME - A dividing wall distillation column for producing high-purity 2-ethyl hexanol including a condenser, a reboiler and a main column having a dividing wall. The main column is divided into a column-top zone, an upper feed zone, an upper outflow zone, a lower feed zone, a lower outflow zone and a column-bottom zone. A crude 2-ethyl hexanol raw material (F) flows in a middle inflow plate NR | 12-19-2013 |
| 20150041308 | DIVIDED WALL DISTILLATION COLUMN FOR PRODUCING HIGH PURITY NORMAL BUTANOL, AND NORMAL BUTANOL DISTILLATION METHOD - The present invention relates to a dividing wall distillation column for producing high-purity n-butanol, and a method for the production of high-purity n-butanol by fractional distillation. More particularly, the present invention relates to a method which provides a dividing wall distillation column with crude n-butanol as a feed to perform a fractional distillation of n-butanol, and an apparatus thereof. The dividing wall distillation column of the present invention exhibits the effects of a two distillation column from only one distillation column, thereby reducing energy and the costs of installing the apparatus as compared to conventional distillation systems. | 02-12-2015 |
| 20150306517 | DEVICE FOR PREPARING ALKANOL - The present application relates to a device and a method for preparing alkanol. According to the present application, energy can be reduced when preparing alkanol by reducing the amount of steam used in a reboiler or cooling water used in a condenser and a cooler, and steam generated from a heat exchanger for column top stream can be utilized in a variety of fields. Also, highly pure alkanol can be prepared according to the present application. | 10-29-2015 |
| 20160193541 | DISTILLATION APPARATUS | 07-07-2016 |
| 203082000 | And returning distillation product to a previous distillation zone | 4 |
| 20100025221 | PROCESS FOR DISTILLATION OF MULTICOMPONENT MIXTURES INTO FIVE PRODUCT STREAMS - Novel distillation processes for reducing the heat duty requirement of petroleum crude distillation as compared to the conventional distillation process are described. These processes are also applicable for distillation of other multi-component mixtures similar to petroleum crude. | 02-04-2010 |
| 20100101931 | PROCESS FOR PREPARING VERY PURE 1,4-BUTANEDIOL - The present invention provides a process for distillatively purifying crude aqueous 1,4-butanediol ( | 04-29-2010 |
| 20100264014 | Process for the Separation of a Hydrocarbon-Containing Feed Stream - The present invention relates to a process for the separation by distillation of a hydrocarbon-containing feed stream comprising olefin monomer, co-monomer and hydrocarbon diluent. The present invention also relates to a distillation system comprising a distillation column for carrying out the process according to the invention. | 10-21-2010 |
| 20100294645 | COMBINED SUMP AND INLINE HEATER FOR DISTILLATION SYSTEM - A distillation system for distilling influent liquid includes a counterflow heat exchanger for receiving and heating the influent liquid. A heater is coupled to the counterflow heat exchanger for receiving the influent liquid from the counterflow heat exchanger and heating the influent liquid. An evaporation unit is coupled to the heater and to a sump for receiving the influent liquid from the heater and for receiving liquid from the sump and forming a vapor from at least a portion of the influent liquid and the liquid received from the sump. The evaporation unit returns unevaporated liquid to the sump. A condensation unit is coupled to the evaporation unit for forming a condensate from vapor received from the evaporation unit. The condensation unit is coupled to the counterflow heat exchanger for transferring the condensate to the counterflow heat exchanger. The heater simultaneously heats the liquid in the sump and the influent liquid received from the counterflow heat exchanger. | 11-25-2010 |
| 203084000 | And returning distillation product to a previous distillation zone | 1 |
| 20110226607 | Systems and Processes for Improving Distillate Yield and Quality - Systems and processes for improving quality and yield of one or more distillate products generated in a distillation column are disclosed. The system comprises a feed inlet distributor that reduces the amount of liquid entrained in vapor rising from the feed zone of the distillation column, a wash zone collection apparatus having an improved design for collecting slop wax falling from a liquid/vapor contacting structure provided in the wash zone, a recirculation subsystem for recirculating at least a portion of the collected slop wax to the top of the wash zone for distribution as wash oil, and a control subsystem. The feed inlet distributor ensures a horizontal fluid flow path free of transverse surfaces thereby minimizing atomization of liquid droplets entrained in vapor in the feed stream. | 09-22-2011 |
| 203085000 | Including the addition of water or steam | 1 |
| 20130228448 | Extraction Prcoess with Novel Solvent Regeneration Methods - Solvent regeneration to recover a polar hydrocarbon (HC) selective solvent substantially free of hydrocarbons (HCs) and other impurities from a solvent-rich stream containing selective solvent, heavy HCs, and polymeric materials (PMs) generated from reactions among thermally decomposed or oxidized solvent, heavy HCs, and additives is provided. A combination of displacement agent and associated co-displacement agent squeezes out the heavy HCs and PMs from the extractive solvent within a solvent clean-up zone. Simultaneously, a filter equipped with a magnetic field is positioned in a lean solvent circulation line to remove paramagnetic contaminants. The presence of the co-displacement agent significantly enhances the capability of the displacement agent in removing the heavy HCs and PMs from the extractive solvent. As a result, the solvent regeneration system operates under milder conditions and minimizes or eliminates the need for including a high temperature, energy intensive and difficult-to-operate thermal solvent regenerator. | 09-05-2013 |
