Class 208/350 - Rectification

Subclass of Class 208 - Mineral oils: processes and products
Definition: Processes carried out in such a manner that vapor rising
No. of patents: 37
Last issue date: 10/21/2008

Number	Title	Issue Date
7437891	Recovery and purification of ethylene A process for the recovery and purification of ethylene and optionally propylene from a stream containing lighter and heavier components that employs an ethylene distributor column and a partially thermally coupled distributed distillation system. ...	10/21/2008
7270743	Products produced form rapid thermal processing of heavy hydrocarbon feedstocks The present invention is directed to the upgrading of heavy hydrocarbon feedstock that utilizes a short residence pyrolytic reactor operating under conditions that cracks and chemically upgrades the feedstock. The process of the present invention provides for the pr...	09/18/2007
7267746	Dividing wall distillation column control apparatus A control apparatus and control method for controlling the separation in a dividing wall distillation column of at least two feeds into at least three products is disclosed. The apparatus uses a temperature measuring device to measure the temperature of fluid in the...	09/11/2007
7208030	Suspended particulate analyzer An apparatus analyzes components of particulate materials suspended in air. The apparatus includes a container into which the air is introduced, a discharging electrode arranged in the container to electrically charge the particulate materials contained in the air, ...	04/24/2007
7169267	Method and device for carrying out the distillative separation of C cuts A process is proposed for the separation of C5+ cuts by distillation into a low-boiler (A), a medium-boiler (B) and a high-boiler fraction (C) in one or more dividing-wall columns (TK), in which a dividing wall (T) is arranged in the longitudinal directio...	01/30/2007
6974494	Apparatus and method using an electrified filter bed for removal of pollutants from a flue gas stream Pollutants in a flue gas stream from a dryer of products, such as wood chips, are removed by a pollution abatement system that includes an electrified filter bed unit for removing solid particulates. To prevent deteriorated operation of the electrified filter bed un...	12/13/2005
6755965	Ethane extraction process for a hydrocarbon gas stream A process for ethane extraction from a gas stream based on turboexpansion and fractionation with no mechanical refrigeration is provided. The feed gas is sweetened and dehydrated by a conventional amine process and by a molecular sieve unit, to remove carbon dioxide...	06/29/2004
6737557	Hydrocarbon upgrading process A process for recovering DCPD from a hydrocarbon feedstock comprising introducing the hydrocarbon feedstock to a first column, recovering an overhead stream from the first column comprising C9− hydrocarbons, recovering a bottom stream from the first col...	05/18/2004
6552242	Fractionation in light paraffin isomerization process Fractional distillation performed to recover butane used as a desorbent component for adsorptive separation is integrated with the other fractionation of the raffinate stream of a C5 -C6 paraffin adsorptive separation zone. A single ...	04/22/2003
6483002	Integrated fractional distillation for adsorptive separation process Construction and operational costs of simulated moving bed adsorptive separation process units are reduced by recovering desorbent from both the extract and raffinate streams of the process in a single column. Both streams are fractionated to recover deso...	11/19/2002
6413378	Apparatus for separation and purification of saturated hydrocarbon and method for separation and purification An extractive distillation tower 4 supplied with a feedstock containing butadiene and a solvent and for distilling the feedstock to separate and purify the butadiene. The tower 4 includes sensors 32, 34 for detecting concentrations of specific impurities ...	07/02/2002
6395951	Adsorptive separation product recovery by fractional distillation Construction and operational costs of recovering the extract or raffinate product of a simulated moving bed adsorptive separation process units are reduced by employing a dividing wall column to perform the separation. The raffinate or extract stream is p...	05/28/2002
6358399	Process for separating ethane and ethylene by solvent absorption and hydrogenation of the solvent phase A process and a device for separating ethane and ethylene from a hydrocarbon steam-cracking effluent is described. Effluent (1) is absorbed in an absorption column (7) by a cooled solvent (9). At the bottom of the column, liquid phase (12) that contains t...	03/19/2002
6348637	Multifunction fractionation column for adsorptive separation processes Construction and operational costs of simulated moving bed adsorptive separation process units are reduced by recovering desorbent from both the extract and raffinate streams of the process in a single column. Both streams are fractionated in the same col...	02/19/2002
6340429	Process and device for separating ethane and ethylene from a steam-cracking effluent by solvent absorption and hydrogenation of the solvent phase A process for separating ethane and ethylene from a hydrocarbon steam-cracking effluent is described. Effluent (1) is absorbed in an absorption column by a cooled solvent (9). At the bottom of the column, the liquid phase that contains the solvent and the...	01/22/2002
5962763	Atmospheric distillation of hydrocarbons-containing liquid streams A method of distilling a crude oil and a contaminated liquid stream in an atmospheric distillation column (2) comprising the steps of (a) heating (13, 15) the crude oil at atmospheric pressure and introducing the heated crude oil into the inlet section (1...	10/05/1999
5876591	Process for the production of lube oil A process for fractionating a heavy hydrocarbon stream to produce a lube oil fraction having a constant, predetermined flash point. A liquid stream is removed from the fractionator, cooled in response to a fractionator top temperature and returned to the ...	03/02/1999
5858213	Monitoring for coke formation during hydrocarbon feed processing Incipient coke formation during hydrocarbon processing operations is detected by monitoring for C6- -fractions in heated hydrocarbon materials. The amount of C6- -fraction is an indication of the coke-forming tendency of the hydrocar...	01/12/1999
5847249	Apparatus and process for catalytic distillations A process for selectively treating the components in a multi-component stream in a distillation column reactor. Additional catalytic distillation structures are placed as a secondary bed in the distillation column, either above or below the primary bed, a...	12/08/1998
5602293	Process for separating a feedstock stream essentially consisting of hydrogen, methane and C₃ /C₄ -hydrocarbons Process for separating a feedstock stream essentially consisting of hydrogen, methane and C3 /C4 -hydrocarbons, which first passes through a pretreatment, such as, e.g., dehydrogenation, after which the feedstock stream undergoes an ...	02/11/1997
5456823	Process for dehydration and/or desalination and for simultaneous fractionation of a petroleum deposit effluent A process for the dehydration and/or desalination and simultaneous fractionation of a petroleum deposit effluent containing oil, associated gas and water which can be saline, which process comprises: (a) at least one step for separating the liquid and gaseous ...	10/10/1995
5389242	Process for the fractionation of oil and gas on a petroleum deposit effluent A description is given of a process for the fractionation of oil and gas on a petroleum deposit effluent, including: (a) a stage wherein the liquid and gaseous phases are separated at the gas evacuation pressure P1, producing a gaseous fraction G1, on the one ...	02/14/1995
5252201	Fractionating process and fractionator An improved fractionating process is provided wherein a liquid stream is withdrawn from the separation zone of the fractionator, is cooled and is recycled to the fractionator at a location below the location of withdrawal of the liquid stream. An improved...	10/12/1993
5200040	Method for rectification and apparatus therefor A method for rectification includes steps of supplying raw materials to a rectifying column from a raw material feed pipe; returning a refluent fluid from a refluxing pipe to the column; leading a hold-up liquid from a bottom tank having a higher surface ...	04/06/1993
5139651	Aromatic extraction process using mixed polyalkylene glycol/glycol ether solvents Processes are provided for the recovery of aromatic hydrocarbons from feeds comprising mixtures of aromatic and non-aromatic hydrocarbons using a mixed aromatic extraction solvent at extraction temperature of less than 250° F. The mixed extraction solven...	08/18/1992
5105041	Effluent separation method for aromatic hydrocarbon alkylation process A process for the production of alkylaromatic hydrocarbons uses a working fluid to reduce the costs of separating an unreacted aromatic feed substrate from aromatic hydrocarbon products. Unreacted aromatic substrate is combined with a light hydrocarbon, s...	04/14/1992
5026952	Process for separating C₂ + or C₃ + or C₄ hydrocarbons from a gaseous mixture The aim is to separate, by cooling and partial condensation of C2+, C3+ or C4 hydrocarbons contained in a gas mixture comprising, in addition to these components, even lighter constituents. For this purpose, the gas mixtur...	06/25/1991
5022981	Aromatic extraction process using mixed polyalkylene glycol/glycol ether solvents Processes are provided for the recovery of aromatic hydrocarbons from feeds comprising mixtures of aromatic and non-aromatic hydrocarbons using a mixed aromatic extraction solvent at extraction temperature of less than 250° F. The mixed extraction solven...	06/11/1991
4894145	Automatic control of feedstock vacuum towers In a fractional distillation tower which is divided into a plurality of sections by total drawoff trays, and wherein at least one fraction is withdrawn from each section. The cut point temperature between fractions is determined based on the partial press...	01/16/1990
4885424	Effluent separation method for aromatic hydrocarbon alkylation process A process for the production of alkylaromatic hydrocarbons uses a light hydrocarbon recycle to reduce the costs of separating an unreacted aromatic feed substrate from aromatic hydrocarbon products. Unreacted aromatic substrate is combined with a light hy...	12/05/1989
4612111	Control of a crude oil preheat furnace The temperature of a crude oil provided from a crude oil preheat furnace to a crude tower is substantially minimized by controlling such temperature so as to maintain a desired minimum overflash flow in the crude tower. Also, the temperature of each of th...	09/16/1986
4578151	Reid Vapor Pressure determination and control in fractional distillation The Reid Vapor Pressure of a hydrocarbon mixture consisting essentially of hydrocarbons selected from the same series is determined based on the actual temperature and vapor pressure of the hydrocarbon mixture. The thus determined Reid Vapor Pressure may ...	03/25/1986
4501657	Preheating of distillation feed The heat to a feed in a distillation operation is controlled in response to the amount of liquid in a liquid condensate collection means....	02/26/1985
4405449	Process for vapor-liquid contacting and fractional distillation A vapor-liquid contacting process is disclosed which may be used in gas treating, absorption or in fractional distillation. The process is characterized by the utilization of a liquid support plate (tray) having a flat vapor-liquid contacting area formed ...	09/20/1983
4277268	Heat pump fractionation process A process for fractionating two or more compounds in which the stripping section of the fractionator is maintained at a first pressure and the rectifying section of the fractionator is maintained at a higher pressure. Overhead vapors from the stripping se...	07/07/1981
4262791	Draw rate signal generator A draw rate signal generator for an atmospheric crude distillation unit receiving crude oil and providing streams 1 through 5 and a reduced crude oil includes flow rate sensors sensing the flow rates of the crude oil and of streams 1 through 4 and providi...	04/21/1981
4007112	Method of controlling a distillation column for topping crude petroleum The method consists in preparing from the crude petroleum being processed a representative cut constituting a vaporized fraction having a known yield, in plotting the TBP curve of the cut by chromatographic analysis and by integration of the quantitative ...	02/08/1977

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Class 208/350 - Rectification