Class / Patent application number | Description | Number of patent applications / Date published |
202153000 | Still and column | 14 |
20080257710 | 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. | 10-23-2008 |
20080289946 | Apparatus for Producing Ethylbenzene or Cumene - The apparatus includes an alkylation unit connected to a first benzene recycle conduit, a feed conduit and an alkylation effluent conduit; a transalkylation unit connected to an polyalkylbenzene recycle conduit, a second benzene recycle conduit, and a transalkylation effluent conduit. A dividing wall distillation column is in fluid communication with the transalkylation effluent conduit, the alkylation effluent conduit, a product stream, a bottoms stream conduit and first and second benzene recycle conduits. A polyalkylbenzene fractionation column is connected to the bottoms stream conduit, the polyalkylbenzene recycle conduit and a heavy component conduit. | 11-27-2008 |
20100044205 | Carbon dioxide corn germ oil extraction system - Supercritical carbon dioxide extraction of corn germ oil from corn germ utilizing extraction conditions adapted to a dry corn fractionation ethanol production process. | 02-25-2010 |
20110011723 | GLYCOL SEPARATION AND PURIFICATION - A process and an apparatus for the separation of a homogeneous catalyst solution from crude monoethylene glycol (MEG) and for purifying MEG is disclosed. The process comprises separating catalyst solution by evaporating crude MEG and feeding crude MEG to a rectification section, a stripping section, and thence to a pasteurisation section, each section operated at subatmospheric pressure of 0.5=10 | 01-20-2011 |
20130228446 | Device and Process for Removing Contaminants from a Fluid Using Electromagnetic Energy - A device and process for removing contaminates from a process fluid employing microwave energy has been described. The use of a quartz tube, which allows for the efficient transfer of microwave energy to a contaminated process fluid is employed to raise the temperature of the process fluid and a flash vaporization technique allows for the removal of uncontaminated fluid. This process decreases the amount of scaling that may collect on the surfaces of the device which increases the devices efficiency and useful life. | 09-05-2013 |
20130284580 | System and Method for Processing Reactor Polymerization Effluent - A method of treating a polymerization reactor effluent stream comprising recovering the reactor effluent stream from the polymerization reactor, flashing the reactor effluent stream to form a flash gas stream, separating the flash gas stream into a first top stream, a first bottom stream, and a side stream, wherein the side stream substantially comprises hexane, separating the first top stream into a second top stream and a second bottom stream, wherein the second bottom stream substantially comprises isobutane, and separating the second top stream into a third top stream and a third bottom stream; wherein the third top stream substantially comprises ethylene, and wherein the third bottom stream is substantially free of olefins. | 10-31-2013 |
202154000 | Plural columns | 8 |
20090020406 | Desalination Using Low-Grade Thermal Energy - This invention describes a low temperature, self-sustainable desalination process operated under natural vacuum conditions created and maintained by barometric pressure head. | 01-22-2009 |
20120125761 | HEAT INTEGRATED DISTILLATION APPARATUS - Provided is a heat integrated distillation apparatus in which energy efficiency and a degree of freedom in design is higher than a normal distillation column, and in which maintenance of the apparatus is simple. The heat integrated distillation apparatus includes: rectifying column ( | 05-24-2012 |
20130213792 | HEAT INTEGRATED DISTILLATION APPARATUS - A distillation apparatus includes a rectifying column, a stripping column, a first pipe that communicates a column top of the stripping column with a column bottom of the rectifying column, and a compressor configured to compress vapor from the stripping column and then to feed the compressed vapor to the rectifying column. The distillation apparatus further includes a heat exchanger located at a predetermined stage of the rectifying column, a liquid withdrawal unit located at a predetermined stage of the stripping column and configured to withdraw a part of liquid from the predetermined stage to an outside of the column, a second pipe that introduces the liquid from the liquid withdrawal unit to the heat exchanger, and a third pipe that introduces fluids introduced through the second pipe to the heat exchanger and then discharged out of the heat exchanger to a stage directly below the liquid withdrawal unit. | 08-22-2013 |
20130220791 | HEAT INTEGRATED DISTILLATION APPARATUS - A distillation apparatus includes a rectifying column, a stripping column located above seen from the rectifying column, a liquid sump unit located at a predetermined stage of the stripping column and configured to hold liquid that has flowed downward, a heat exchanger located in the liquid sump unit, a second pipe for introducing vapor in the rectifying column to the heat exchanger of the stripping column, and a third pipe for introducing fluids flowing out from the heat exchanger of the stripping column to the rectifying column. Further, a flare line having lower pressure than pressure in the rectifying column is connected to a downstream side of the third pipe. The distillation apparatus can switch a first flow toward an inside of the rectifying column through the third pipe to a second flow branching from the third pipe toward a pipe at a lower pressure side. | 08-29-2013 |
20130256115 | HEAT INTEGRATED DISTILLATION APPARATUS - A distillation apparatus of the present invention includes high-pressure column | 10-03-2013 |
20140014490 | HEAT INTEGRATED DISTILLATION COLUMN USING STRUCTURED HEAT EXCHANGER - Heat integrated distillation column for separating components in a fluid mixture. The heat integrated distillation fluid column is provided with a stripper part (S), a rectifier part (R) and a compressor ( | 01-16-2014 |
20140318945 | DISTILLATION STATION - A distillation station for separating components of a liquid mixture, comprising a vertical distillation column split into individual separation stages by fittings and which is further split by the liquid mixture feed into a stripping chamber and an enriching chamber, wherein in the stripping chamber the lower boiling fraction of vapour from the fluid mixture rising from a column sump comprising an evaporator is stripped, and in the enriching chamber the vapour is enriched with the lower-boiling fraction, which is withdrawn from a return fluid produced due to the vapour drawn from the column head being precipitated at least partially in a condenser and returned to the rectifier column, and the return liquid and the liquid mixture preferably fed between two separating stages being routed to the fittings vertically connected in sequence. In the process, each of the fittings comprise at least one liquid channel, which is separated at least partially from the vapour chamber of the distillation column by a two-sided vapour-permeable, liquid-tight membrane wall. | 10-30-2014 |
20150060259 | Systems and Methods for Alcohol Recovery and Concentration of Stillage By-Products - Systems and methods for separating an alcohol, and in particular butanol, from a fermented feed and concentrating thin stillage into syrup includes operation of one or more alcohol recovery distillation columns using the heat supplied by steam generated from concentration of the thin stillage in a multi-train, multi-effect evaporation system. | 03-05-2015 |