Patents by Inventor Costandi A. Audeh

Costandi A. Audeh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5482692
    Abstract: An exhaust gas treatment process useful for the removal of nitrogen oxides using an iron impregnated zeolite as the catalyst and ammonia as a reducing agent. It is desired to extend the effective temperature range for the selective catalytic reduction (SCR) of nitrogen oxides below about 400.degree. C. This is accomplished in the instant invention through the use of an intermediate pore size zeolite, such as ZSM-5, based catalyst which has been ferrocene treated to substantially incorporate iron into its pores. The catalyst may also be hydrothermally treated at least once, if desired.
    Type: Grant
    Filed: July 7, 1994
    Date of Patent: January 9, 1996
    Assignee: Mobil Oil Corporation
    Inventors: Costandi A. Audeh, Sanjay B. Sharma, David S. Shihabi
  • Patent number: 5466363
    Abstract: Use of a carbon-based catalyst composition, particularly activated-carbon, optionally containing at least one metal selected from Ni, Co, Mo, W, Fe, or mixtures thereof, for heavy oil hydroprocessing. Recovery and partial gasification of the catalyst to produce a synthesis gas and a partially gasified catalyst residue. Use of the synthesis gas in a process to produce synthetic hydrocarbons and use of the catalyst residue in steel or alloy production. Catalysts used for heavy oil hydrocarbon hydroprocessing frequently become contaminated with metals which increase the cost of disposal of the spent catalysts, e.g. landfills. This invention uses a specific catalyst for hydroprocessing which can then be partially gasified to produce a catalyst residue which can be further used in steel or alloy production, thereby reducing the need for expensive disposal.
    Type: Grant
    Filed: February 10, 1994
    Date of Patent: November 14, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Costandi A. Audeh, Lillian A. Rankel
  • Patent number: 5463168
    Abstract: A process is described wherein the HCN in FCC hydrocarbon gas streams is converted to NH.sub.3 over a catalyst. This conversion has the desirable result of decreasing the amount of CN.sup.- in the water leaving the sour-water stripper, and ultimately in the refinery water effluent.
    Type: Grant
    Filed: August 17, 1994
    Date of Patent: October 31, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Costandi A. Audeh, David S. Shihabi, Richard F. Socha, Scott A. Stevenson
  • Patent number: 5461180
    Abstract: A process is disclosed for the catalytic norbornylation of aromatics comprising the steps of contacting norborene and an aromatic hydrocarbon with a solid catalyst comprising a porous crystalline material having a Constraint Index of from about 0.1 to about 12 under norbornylation conditions to evolve a product containing norbornylated aromatics.
    Type: Grant
    Filed: May 5, 1994
    Date of Patent: October 24, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Costandi A. Audeh, James R. Boulton, Ross A. Kremer, Yusheng Xiong
  • Patent number: 5461181
    Abstract: A process for the heterogeneous catalytic oligomerization of norbornene comprising the steps of reacting norborene in the presence of a solid catalyst comprising a porous crystalline material having a Constraint Index of from about 0.1 to about 12 under oligomerization conditions to evolve a product containing norbornene oligomers.
    Type: Grant
    Filed: May 5, 1994
    Date of Patent: October 24, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Costandi A. Audeh, James R. Boulton, Ross A. Kremer, Yusheng Xiong
  • Patent number: 5393505
    Abstract: The present invention includes a process for rejuvenating a spent aqueous alkanolamine solution comprising use of alkyl-substituted ammonium-containing organic base treatment to remove inorganic ions.
    Type: Grant
    Filed: July 19, 1993
    Date of Patent: February 28, 1995
    Assignee: Mobil Oil Corporation
    Inventor: Costandi A. Audeh
  • Patent number: 5354938
    Abstract: The surface properties of hydrofluoric acid are modified by the addition of a perfluoro compound in order to reduce the tendency of the HF to form an aerosol upon any release of HF alkylation acid from an HF alkylation unit. The perfluoro compounds which are used are the perfluorosulfonic acid fluorides and perfluorocarboxylic acid fluorides.
    Type: Grant
    Filed: June 21, 1991
    Date of Patent: October 11, 1994
    Assignee: Mobil Oil Corporation
    Inventors: Costandi A. Audeh, Saverio G. Greco
  • Patent number: 5310479
    Abstract: A process for reducing the aliphatic sulfur content of a crude oil in a production site is disclosed. A crude oil with a high aliphatic sulfur content is treated at ambient reaction temperature with an oxidant which comprises formic acid and hydrogen peroxide. Preferably, the crude is treated with an amount of the oxidant of about 2 moles of oxidant for each mole of aliphatic sulfur in the crude. Preferably reaction temperature ranges from about 30.degree. F. to 100.degree. F. The oxidant converts the aliphatic sulfur compounds of the crude to a water soluble phase which is separated from the crude oil in a water wash.
    Type: Grant
    Filed: October 5, 1992
    Date of Patent: May 10, 1994
    Assignee: Mobil Oil Corporation
    Inventor: Costandi A. Audeh
  • Patent number: 5292493
    Abstract: The present invention provides a process for removing heat stable salts which accumulate in alkanolamine gas purification process units. Surprisingly, it has been found that weakly acidic cationic exchange resins are dramatically more effective for removing heat stable salts from alkanolamine solutions than strongly acidic cationic exchange resins.Specifically, it has been found in accordance with the invention that ion exchange resins are useful for purifying used aqueous alkanolamine solutions, in the following order of preference: Weak Acid IX>Weak Base IX>Strong Acid IX>Strong Base IX.
    Type: Grant
    Filed: December 5, 1991
    Date of Patent: March 8, 1994
    Assignee: Mobil Oil Corporation
    Inventors: Costandi A. Audeh, Tsoung Y. Yan
  • Patent number: 5209913
    Abstract: A process for producing a natural gas condensate having a reduced amount of mercury from a mercury-containing natural gas wellstream, wherein the wellstream is separated into gaseous and liquid fractions. The treatment of the gaseous fraction includes treatment with a carbonate solution which, upon regeneration, yields an acid gas. A portion of the acid gas is mixed with the liquid fraction, the mixture is then filtered, passed over a substance capable of adsorbing hydrogen sulfide, and separated into a stream comprising a natural gas condensate and at least one other stream comprising lower molecular weight hydrocarbons and/or other gases.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: May 11, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Costandi A. Audeh, Barry E. Hoffman, Garry W. Kirker
  • Patent number: 5192421
    Abstract: Deasphalting heavy, asphaltic crudes before significant thermal treatment, even mild treatment which is inherent in, e.g., vacuum distillation, produces deasphalted whole crude with a reduced soluble metal content. This process is especially effective for preparing feedstocks for catalytic cracking units from heavy crudes containing large amounts of Ni and V which are porphyrin coordinated, and which are thermally unstable.
    Type: Grant
    Filed: April 16, 1991
    Date of Patent: March 9, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Costandi A. Audeh, Lillian A. Rankel
  • Patent number: 5190908
    Abstract: The present invention advantageously provides a desiccant bed with means for removing residual mercury from a gas, such as a natural gas stream. The desiccant bed includes a silver and/or gold-containing layer and a protective layer of pellets having an active compound comprising at least one of copper hydroxide, copper oxide and copper sulfide. The active compound provides the desiccant bed with the additional advantage of removing H.sub.2 S and CO.sub.2 as well as mercury from the gaseous stream. The desiccant bed removes the mercury, H.sub.2 S and CO.sub.2 without incurring the pressure loss inherent in utilizing a separate downstream adsorbent bed for removing Hg.
    Type: Grant
    Filed: June 24, 1991
    Date of Patent: March 2, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Costandi A. Audeh, Barry E. Hoffman
  • Patent number: 5173286
    Abstract: A process for fixing elemental mercury (Hg.degree.) in a spent molecular sieve desiccant is disclosed. The process includes isolating gspent molecular sieve desiccant containing elemental mercury, and contacting the spent desiccant in a dilute aqueous solution of an alkaline metal salt. The reaction traps the mercury within the spent desiccant as an insoluble heavy metal salt. The alkaline metal salt can include, for example, sodium thiosulfate (Na.sub.2 S.sub.2 O.sub.3), sodium polysulfide (Na.sub.2 S.sub.x), or potassium peroxomonosulfate (KHSO.sub.5). The reaction with any of these aqueous solutions acts to fix the elemental mercury (Hg.degree.) as a mercury compound within the solid desiccant. If sodium thiosulfate or sodium polysulfide is utilized, then the process also includes introducing hydrochloric acid (HCl) in a suitable quantity to liberate sufficient elemental sulfur to react with the elemental mercury (Hg.degree.) to form an HgS salt. The formation of HgS fixes the elemental mercury (Hg.degree.
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: December 22, 1992
    Assignee: Mobil Oil Corporation
    Inventor: Costandi A. Audeh
  • Patent number: 5141724
    Abstract: Mercury is removed from a gaseous hydrocarbon stream by passing the stream through an in-line mixer which includes mixing elements which have gas-contacting surfaces of an amalgam-forming metal. Preferred amalgam-forming metals are gold, silver or a combination thereof. A specific in-line mixer has static mixing elements which are disposed along the length of the mixer, preferably, the mixing elements are helically disposed along the length of the mixer. Other contaminants such as water and residual H.sub.2 S and CO.sub.2 are removed from the gas stream by a gas purification system which includes the in-line mixer and a desiccant bed modified for removing mercury and other contaminants. The modifications to the desiccant bed include a porous gold and/or silver containing layer, i.e., a gold and/or silver wire screen or packed gold and/or silver wool, and a protective layer of alumina pellets having an active compound such as copper hydroxide, copper oxide and copper sulfide impregnated therein.
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: August 25, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Costandi A. Audeh, Barry E. Hoffman
  • Patent number: 5130108
    Abstract: A process for producing a natural gas condensate having a reduced amount of mercury from a mercury-containing natural gas wellstream, wherein the wellstream is first separated into gaseous and liquid fractions. The treatment of the gaseous fraction includes treatment with a carbonate solution which, upon regeneration, yields an acid gas which is mixed with the liquid fraction. The mixture is then separated from gaseous components and filtered.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: July 14, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Costandi A. Audeh, Barry E. Hoffman
  • Patent number: 5120515
    Abstract: The present invention advantageously provides a conventional dessicant bed with means for removing residual mercury, H.sub.2 S and CO.sub.2 from a gas, such as a natural gas stream, by replacing an inert protective layer of pellets with an active compound comprising at least one of copper hydroxide, copper oxide and copper sulfide. The active compound provides the dessicant bed with the additional advantage of removing H.sub.2 S and CO.sub.2 as well as mercury from the gaseous fraction without incurring the pressure loss inherent in utilizing a separate downstream adsorbent bed for removing Hg.
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: June 9, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Costandi A. Audeh, Barry E. Hoffman
  • Patent number: 5114675
    Abstract: An HF alkylation unit incorporates a source of a proton acceptor additive which may be added to the HF alkylation acid in the event of a release of acid from the unit. The addition of the proton acceptor to the acid alters the character of HF droplets in an HF cloud to make them more easily treated by a simple water drench. The proton acceptor is maintained in a pressurized container in the unit and is connected to the reaction section of the unit by way of additive release valves under the control of an emergency controller which opens the valves and permits the additive to enter the reaction section of the unit and mix with the acid to modify its characteristics. The container may be connected to the major acid-containing process vessels in the unit, specifically the acid settler and the acid cooler (in a gravity flow unit) or the acid settler and the reactor (in a pump-around unit).
    Type: Grant
    Filed: March 7, 1990
    Date of Patent: May 19, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Saverio G. Greco, Costandi A. Audeh
  • Patent number: 5062976
    Abstract: A process for preparing an oxidized sulfurized isobutylene product having utility as an EP additive. The process comprises the steps of: reacting sulfur monochloride with a stoichiometric excess of isobutylene; reacting the product so produced with an alkali metal monosulfide and free sulfur in an alcohol-water solvent; reacting the product so produced with an aqueous solution containing an alkali metal hydroxide; and reacting the liquid sulfurized isobutylene so produced with a mild oxidizing agent under conditions sufficient to effect the appearance of new infrared frequency bands at 1300 cm.sup.-1 and 1030 cm.sup.-1 indicative of the formation of sulfoxides and sulfones and recovering a liquid oxidized sulfurized isobutylene product which is soluble in a lubricating composition.
    Type: Grant
    Filed: June 28, 1990
    Date of Patent: November 5, 1991
    Assignee: Mobil Oil Corporation
    Inventor: Costandi A. Audeh
  • Patent number: 5034203
    Abstract: Natural gas, particularly gas to be processed in liquefied natural gas plants, is treated to remove residual mercury by scrubbing with an aqueous solution containing alkali metal polysulfide and sufficient pH adjusting compound to maintain the pH above 8.4.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: July 23, 1991
    Assignee: Mobil Oil Corporation
    Inventors: Costandi A. Audeh, Francis P. Ragonese
  • Patent number: 4985137
    Abstract: A process for the removal of mercury from natural gas condensate wherein hydrogen sulfide is mixed into the natural gas condensate and the mixture is fed along with a stripping gas through a reactor containing a catalyst, e.g. a cobalt/molybdenum catalyst.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: January 15, 1991
    Assignee: Mobil Oil Corporation
    Inventor: Costandi A. Audeh