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| Number | Title | Issue Date |
| 8012344 | Systems for removing vanadium from low-grade fuels A fuel preparation system includes a fractionation unit for treating fuel containing vanadium. A gas turbine is connected to the fractionation unit to receive treated fuel. The gas turbine may deliver exhaust from the gas turbine to the fractionation unit. The fuel ... | 09/06/2011 |
| 7824542 | Process for enhancement of the selectivity of physically acting solvents used for the absorption of gas components from industrial gases The invention relates to a method for recovering absorbed hydrocarbon components while absorbing acid gases from technical gases, as for example a natural gas, by means of physically active absorption agents, wherein the inventive method consists in increasing the p... | 11/02/2010 |
| 7316127 | Hydrocarbon gas processing for rich gas streams A process for the recovery of ethane and heavier hydrocarbon components from a hydrocarbon feed gas stream. Feed gas stream is cooled into a first and second cooled streams. First and second cooled streams are sent to a cold absorber and separated into a first gas s... | 01/08/2008 |
| 7273542 | Process and apparatus for recovering olefins The present invention relates to a process and apparatus for recovering product from reactor effluent of a reactor for a hydrocarbon feedstream. An indigenous C4 stream is used as lean oil in a demethanizer, which facilitates significant cost and operatio... | 09/25/2007 |
| 7132044 | Device that comprises recycling to a separator a liquid effluent that is obtained from an absorber and is mixed with a feedstock A device comprising at least one absorber, at least one cold separator from which is extracted a gaseous phase that feeds the absorber, at least one recycling to said cold separator of at least a portion of liquid effluent that is obtained from the absorber and whic... | 11/07/2006 |
| 7074323 | Use of low pressure distillate as absorber oil in a FCC recovery section A process for the recovery of gaseous products from the product mixture obtained by contacting a hydrocarbon feed with a catalyst in a fluid catalytic cracking process, wherein the liquid, obtained by separating the top product of main fractionators into gaseous and... | 07/11/2006 |
| 6759438 | Use of oxygen analysis by GC-AED for control of fischer-tropsch process and product blending Methods for producing a substantially paraffinic Fischer-Tropsch product or a blended Fischer Tropsch product comprising a selected oxygenate concentration, and if required, a selected oxygenate concentration of specific individual oxygenates, are disclosed. The met... | 07/06/2004 |
| 6676828 | Process scheme for sequentially treating diesel and vacuum gas oil A process for treating a vacuum gas oil and Diesel feed includes the steps of providing reaction feed containing vacuum gas oil, Diesel and sulfur-containing compounds; providing a stripping gas; providing a washing feed; and mixing the reaction feed, the... | 01/13/2004 |
| 6483001 | Layered adsorption zone for hydrogen production swing adsorption The present invention describes a pressure swing adsorption (PSA) apparatus and process for the production of purified hydrogen from a feed gas stream containing heavy hydrocarbons (i.e., hydrocarbons having at least six carbons). The apparatus comprises ... | 11/19/2002 |
| 6444116 | Process scheme for sequentially hydrotreating-hydrocracking diesel and vacuum gas oil An integrated process for treating a vacuum gas oil, kerosene, naphtha and Diesel-containing feed, includes the steps of providing a reaction feed containing residue, vacuum gas oil, kerosene, naphtha, Diesel, hydrogen sulfide, ammonia, and C1 ... | 09/03/2002 |
| 6391190 | Mechanical deaeration of bituminous froth Aerated bitumen froth obtained from oil sands must be deaerated so that it can be pumped through a pipeline. Mechanical shearing is effective to deaerate bitumen froth to an air content of below 10 volume percent. Mechanical deaeration of bitumen froth ca... | 05/21/2002 |
| 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 |
| 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 |
| 6303022 | Method of gas stream purification having independent vapor and liquid refrigeration using a single refrigerant A process for recovering a hydrogen-rich gas and for increasing the recovery of liquid hydrocarbon products from a hydrocarbon conversion zone effluent by adsorption of the liquifiable products from a chilled gaseous stream with a chilled liquid stream is... | 10/16/2001 |
| 6019888 | Method of reducing moisture and solid content of bitumen extracted from tar sand minerals Tar sand is upgraded to produce a hydrocarbon having a low concentration of water and solids by contacting a bitumen/diluent mix with an alkoxyalkylphenol alkoxylate surfactant prior to separation of a recoverable hydrocarbon phase. The separation of the ... | 02/01/2000 |
| 5965014 | Method of gas stream purification having independent vapor and liquid refrigeration using a single refrigerant A process for recovering a hydrogen-rich gas and for increasing the recovery of liquid hydrocarbon products from a hydrocarbon conversion zone effluent by adsorption of the liquifiable products from a chilled gaseous stream with a chilled liquid stream is... | 10/12/1999 |
| 5736031 | Separation of hydrocarbons water/emulsifier mixtures A process for separating vaporous mixtures of hydrocarbons, water and emulsifier derived from the remediation of wellbore fluid, such as a mud containing solid particulate material in which the vaporous mixture is quenched with a hydrocarbon stream which ... | 04/07/1998 |
| 5659109 | Method for removing mercaptans from LNG A process for liquefying natural gas containing mercaptans. Mercaptans are concentrated into a distillate stream by distilling the feed gas stream without specific pretreatment for mercaptans removal. Thus, the mercaptans removal equipment is much smaller... | 08/19/1997 |
| 5298156 | Simultaneous decarbonation and gasoline stripping of hydrocarbons Process for the simultaneous decarbonation and gasoline stripping of a gaseous mixture at an absolute pressure higher than 0.5 MPa containing methane, C2 and higher hydrocarbons and CO2 in which a demethanized rich solvent is regener... | 03/29/1994 |
| 5120899 | Diamondoid recovery from natural gas fields A process is disclosed for separating diamondoid compounds from a natural gas stream containing the same comprising the steps of contacting the natural gas stream with a selected solvent and fractionating the sorbed diamondoids from the diamondoid-enriche... | 06/09/1992 |
| 4982049 | Purification of hydrocarbonaceous fractions A process for recovering diamondoid compounds from hydrocarbonaceous minerals and/or from deposits left by such minerals in equipment or otherwise, which comprises dissolving diamondoid compounds in an aromatic distillate fuel oil; extracting aromatics fr... | 01/01/1991 |
| 4964980 | Apparatus and process for stabilizing liquid hydrocarbon condensate Stabilized liquid hydrocarbon condensate is obtained by a process comprising the steps of: (a) introducing said condensate, at an elevated temperature and pressure, into a stabilizer column operated under conditions effective to separate said condensate i... | 10/23/1990 |
| 4952747 | Removal of diamondoid compounds from hydrocarbonaceous fractions According to this invention, substantially hydrocarbonaceous fractions comprising diamondoid compounds are peculiarly suitable for separation by a thermal gradient diffusion process. Applicability of this process to this service is dependent upon the fact... | 08/28/1990 |
| 4952748 | Purification of hydrocarbonaceous fractions A process is disclosed for extracting diamondoid compounds from a hydrocarbon gas stream. The process includes two stages, each of which alone is effective to remove diamondoids from a hydrocarbon gas stream. The first stage comprises contacting the diamo... | 08/28/1990 |
| 4952749 | Removal of diamondoid compounds from hydrocarbonaceous fractions A process for recovering diamondoid compounds from a fluid mixture thereof with other hydrocarbonaceous compounds which comprises contacting said mixture with a porous solid, for example, a zeolite, having pore opening large enough to admit said diamondoi... | 08/28/1990 |
| 4707171 | Process for obtaining C2+ or C3+ hydrocarbons For obtaining C2+ or C3+ hydrocarbons from gas mixtures containing essentially light hydrocarbons and optionally, hydrogen or nitrogen, the gs mixture is first cooled and subjected to a phase separation, and the thus condensed compon... | 11/17/1987 |
| 4705549 | Separation of C3+ hydrocarbons by absorption and rectification The separation of C3+ hydrocarbons from natural gas and the like comprises subjecting the gas under pressure to partial condensation under cooling, separating the uncondensed gaseous phase and engine expanding same while the condensed liquid f... | 11/10/1987 |
| 4664687 | Process for the separation of C2+, C3+ or C4+ hydrocarbons In a process for the separation of C2+, C3+ or C4+ hydrocarbons from a gas stream containing light hydrocarbons and, if desired, of components boiling lower than methane, in which the gas stream, being under an elevated pr... | 05/12/1987 |
| 4654062 | Hydrocarbon recovery from carbon dioxide-rich gases A process is set forth for the separation of carbon dioxide from propane and higher alkanes using a carbon dioxide-loaded lean oil solvent and higher solvent flows and heat utilizations rather than mechanical energy utilization. A high pressure carbon dio... | 03/31/1987 |
| 4605493 | Method for minimizing recycling in an unsaturated gas plant An unsaturated gas plant system includes a first unit which receives a low pressure hydrocarbon gas input and provides a liquid output and a gaseous output, an absorber which receives an unstabilized gasoline input and a lean oil input, a stripper, and a ... | 08/12/1986 |
| 4568452 | Process for upgrading a contaminated absorbent oil An absorbent hydrocarbonaceous oil comprising contaminants, such as sulfur and/or nitrogen, is upgraded by subjecting the contaminated absorbent oil to hydrorefining. The upgraded absorbent may be utilized again as absorbent.... | 02/04/1986 |
| 4479812 | Sorption fractionation system for olefin separation A continuous fractionation technique is provided for recovering ethylene from an olefinic feedstock comprising C3+ higher olefins. This technique provides methods and means for contacting the olefinic feedstock in a counter current ... | 10/30/1984 |
| 4431529 | Power recovery in gas concentration units An absorption process is disclosed for the recovery of normally liquid hydrocarbons from a gas stream. The process is useful in recovering hydrocarbons from the gas stream discharged by the main fractionation column of a fluidized catalytic cracking unit.... | 02/14/1984 |
| 4263019 | Vapor recovery Volatile liquid, such as benzene, isoprene, cyclopentadiene, butadiene present as a vapor in a blanket gas released from a storage zone for the liquid is absorbed from the gas by use of an absorption oil, followed by contacting of the rich absorption oil ... | 04/21/1981 |
| 4234388 | Removal of chlorine from pyrolytic oils The gas stream obtained from the pyrolysis of solid organic wastes and containing chlorine in the form of hydrogen chloride is processed to obtain a substantially chlorine free pyrolytic oil. The gas stream is first contacted with a hydrocarbon immiscible with... | 11/18/1980 |
| 4225415 | Recovering hydrocarbons from hydrocarbon-containing vapors Values are recovered from a hydrocarbon-containing vapor by contacting the vapor with quench liquid consisting essentially of hydrocarbons to form a condensate and a vapor residue, the condensate and quench fluid forming a combined liquid stream. The comb... | 09/30/1980 |
| 4188796 | Method of and apparatus for the cooling (quenching) of cracking gases Cracking gases are cooled by spraying them through a multiplicity of orifices into a cooling oil bath below the surface thereof.... | 02/19/1980 |
| 4137135 | Process and apparatus for separating light oil from a mixture comprising waste oil The process of separating water and wash oil from a gaseous feed stream of water vapor, wash oil and light oil involving (a) directing the gaseous feed stream in an upward direction and in contact with a cooling solid surface such that a temperature gradi... | 01/30/1979 |
| 4075083 | Method for destructive distillation of hydrocarbonaceous materials A method of retorting oil shale which comprises the steps of passing the material in particulate form downwardly as a continuous vertical column of solid material successively through a preheating zone, a distillation zone, a combustion zone, and a residu... | 02/21/1978 |
| 4072604 | Process to separate hydrocarbons from gas streams A process for the separation of specific C2 to C6 hydrocarbons from a gaseous feed stream containing C1 to C6 -plus hydrocarbons. The feed stream enters an absorber and is first contacted by a primary lean liqui... | 02/07/1978 |
