Patents Represented by Attorney Charles W. Stewart

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  • Catalyst comprising hydrogen halide, sulfone, and a promoter
    Patent number: 5891819
    Abstract: A novel alkylation catalyst is described which is used in processes for alkylating olefin hydrocarbons with isoparaffin hydrocarbons to produce high octane alkylate products suitable for use as a blending component of gasoline motor fuel. The novel catalyst comprises a mixture of a hydrogen helide, a sulfone and a promoter. The novel alkylation catalyst is utilized in a novel process for alkylating olefin hydrocarbons with isoparaffin hydrocarbons.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: April 6, 1999
    Assignee: Phillips Petroleum Company
    Inventors: Bruce B. Randolph, Ronald G. Abbott
  • Alkylation catalyst regeneration
    Patent number: 5877382
    Abstract: Disclosed is a process for removing acid soluble oils, produced as an undesirable by-product of an HF (catalyzed alkylation reaction, from a fluid containing a sulfone compound. The process includes the use of hydrocarbons to remove ASO from the sulfone-containing fluid.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: March 2, 1999
    Assignee: Phillips Petroleum Company
    Inventor: Alan D. Eastman
  • Process for aromatization of a cracked gasoline feedstock using a catalyst containing an acid leached zeolite and tin
    Patent number: 5873994
    Abstract: An aromatization process for converting a portion of a cracked gasoline feedstock to aromatics utilizing a catalyst comprising an acid leached zeolite and tin under process conditions suitable for converting a portion of the cracked gasoline feedstock to aromatics.
    Type: Grant
    Filed: July 15, 1997
    Date of Patent: February 23, 1999
    Assignee: Phillips Petroleum Company
    Inventors: Charles A. Drake, An-hsiang Wu
  • Process and apparatus for fluidized catalytic cracking of a hydrocarbon feed
    Patent number: 5851380
    Abstract: An improved apparatus and method for the fluidized catalytic cracking (FCC) of hydrocarbons. Turbulence generation means disposed on the internal surface of an FCC riser-reactor are utilized to provide for a more uniform catalyst flow pattern within the riser-reactor and to thereby provide for a better conversion and product slate.
    Type: Grant
    Filed: August 1, 1996
    Date of Patent: December 22, 1998
    Assignee: Phillips Petroleum Company
    Inventor: Jan W. Wells
  • Method for inhibiting the rate of coke formation during the zeolite catalyzed aromatization of hydrocarbons
    Patent number: 5800696
    Abstract: The rate of coke formation during the aromatization of gasoline boiling range hydrocarbons in which the hydrocarbons are contacted with a zeolite catalyst is significantly reduced by providing a concentration of a silylating agent in the hydrocarbon feed.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: September 1, 1998
    Assignee: Phillips Petroleum Company
    Inventors: Charles A. Drake, An-Hsiang Wu
  • Isoparaffin-olefin alkylation
    Patent number: 5792896
    Abstract: An alkylation process for reacting alkylatable hydrocarbons in the presence of a sulfolane and hydrofluoric acid catalyst within a natural circulation reaction and circulation system.
    Type: Grant
    Filed: March 4, 1997
    Date of Patent: August 11, 1998
    Assignee: Phillips Petroleum Company
    Inventors: Bruce B. Randolph, Richard L. Anderson, Harvey D. Hensley
  • Sulfur absorbents
    Patent number: 5780001
    Abstract: A composition and method of making a strength enhanced composition are described. The composition comprises zinc oxide, silica and colloidal oxide solution. The colloidal oxide solution is utilized as a binding agent to provide a strength enhanced absorbent composition that can be utilized in an absorption process for the purpose of removing sulfur contaminants from fluid streams.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: July 14, 1998
    Assignee: Phillips Petroleum Company
    Inventors: Gyanesh P. Khare, Ralph E. Bonnell
  • Process for producing olefins and aromatics from non-aromatics
    Patent number: 5773676
    Abstract: A multi-step process for converting non-aromatic hydrocarbons (preferably a gasoline-type hydrocarbon mixture) to lower olefins (preferably, ethylene and propylene) and aromatic hydrocarbons (preferably benzene, toluene and xylene) comprises, in sequence, a first reaction step, a first separation step, a second reaction step, and a second separation step, wherein the reaction severity of the first reaction step is lower than in the second reaction step so as to maximize olefins and aromatics yields.
    Type: Grant
    Filed: August 6, 1996
    Date of Patent: June 30, 1998
    Assignee: Phillips Petroleum Company
    Inventors: Charles A. Drake, Edward L. Sughrue, II, James B. Kimble
  • Method for preventing the accumulation of light ASO in the alkylation catalyst of alkylation process system
    Patent number: 5767335
    Abstract: Disclosed is an alkylation process which utilizes a mixture of sulfone and hydrogen fluoride as an alkylation catalyst. The process provides for the removal of light ASO from the alkylation catalyst that accumulates therein as a result of the inability to remove the light ASO produced as a by-product of the alkylation reaction.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: June 16, 1998
    Assignee: Phillips Petroleum Company
    Inventors: Richard L. Anderson, Keith W. Hovis
  • Method for regeneration of a hydrogen fluoride alkylation catalyst containing sulfone, water, and ASO
    Patent number: 5759937
    Abstract: Disclosed is an alkylation process which utilizes a mixture of sulfone and hydrogen fluoride as an alkylation catalyst. The process provides for the removal of ASO and water from the alkylation catalyst that accumulates therein while minimizing the loss of sulfone and HF with the ASO and water removed.
    Type: Grant
    Filed: October 2, 1996
    Date of Patent: June 2, 1998
    Assignee: Phillips Petroleum Company
    Inventors: Keith W. Hovis, Richard L. Anderson
  • Method for regenerating a hydrogen fluoride and sulfone alkylation catalyst
    Patent number: 5753575
    Abstract: Disclosed is an alkylation process which utilizes a mixture of sulfone and hydrogen fluoride as an alkylation catalyst. The process provides for the regeneration of an alkylation catalyst having ASO therein by separating HF from the ASO and sulfone components. The ASO and sulfone are thereafter separated to provide sulfone which is substantially free of ASO.
    Type: Grant
    Filed: February 15, 1996
    Date of Patent: May 19, 1998
    Assignee: Phillips Petroleum Company
    Inventors: Richard L. Anderson, Bruce B. Randolph, Keith W. Hovis
  • Method for making ether from a paraffin feedstock
    Patent number: 5750798
    Abstract: A process for the production of ethers from a paraffin feedstock. The process includes a novel arrangement of dehydrogenation, isomerization, hydroisomerization, separation and etherification to provide a novel method for the production of ethers from a paraffin feedstock.
    Type: Grant
    Filed: December 13, 1995
    Date of Patent: May 12, 1998
    Assignee: Phillips Petroleum Company
    Inventors: Mark D. Scharre, Warren M. Ewert, Harold R. Hunt
  • Isoparaffin-olefin alkylation
    Patent number: 5723715
    Abstract: A novel alkylation catalyst is described which is used in processes for alkylating olefin hydrocarbons with isoparaffin hydrocarbons to produce high octane alkylate products suitable for use as a blending component of gasoline motor fuel. The novel catalyst comprises a mixture of a hydrogen halide, a sulfone and a promoter. The novel alkylation catalyst is utilized in a novel process for alkylating olefin hydrocarbons with isoparaffin hydrocarbons.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: March 3, 1998
    Inventors: Bruce B. Randolph, Ronald G. Abbott
  • Hydrocarbon isomerization catalyst blend
    Patent number: 5707918
    Abstract: A Group VIII metal- and chloride-containing composition is prepared by a method which comprises mixing (A) a solid material containing at least one Group VIII metal (Pt and/or Pd and/or Ni) and alumina as the support and (B) an alumina-supported aluminum- and chlorine-containing compound which has been prepared by mixing an alumina material with AlCl.sub.3 and/or at least one organoaluminum chloride (such as ethylaluminum dichloride), heating the mixture at a temperature of about 600.degree.-750.degree. C. and then with an HCl-containing gas at a temperature of about 100.degree.-750.degree. C. The thus-obtained composition comprising components (A) and (B) is employed as a catalyst in the isomerization of C.sub.4 -C.sub.8 alkanes and/or cycloalkanes (e.g., n-butane).
    Type: Grant
    Filed: August 29, 1995
    Date of Patent: January 13, 1998
    Assignee: Phillips Petroleum Company
    Inventors: An-hsiang Wu, Charles A. Drake, Ralph J. Melton
  • Method of preparing isomerization catalyst composition
    Patent number: 5707921
    Abstract: A Group VIII metal- and chloride-containing composition (effective as an alkane/cycloalkane isomerization catalyst) is prepared by a method which comprises mixing at least one aluminum- and chlorine-containing compound (preferably AlCl.sub.3) with a solid material containing at least one Group VIII metal (Pt and/or Pd and/or Ni) and alumina, heating the obtained solid mixture in an inert gas, and then treating the solid mixture with a gas mixture comprising hydrogen gas and HCl and/or chloroalkane (such as CCl.sub.4).
    Type: Grant
    Filed: September 15, 1995
    Date of Patent: January 13, 1998
    Assignee: Phillips Petroleum Company
    Inventors: An-hsiang Wu, Charles A. Drake, Ralph J. Melton
  • Method for prolonging the life of alkylation product stream defluorinator beds
    Patent number: 5689030
    Abstract: A method for prolonging the life of a defluorinator material contained within an alkylation process product stream defluorination zone used to remove organic fluorides from a product stream produced by an alkylation process that utilizes an alkylation catalyst containing HF and sulfone. The life of the defluorinator material is extended by reducing the amount of organic fluorides produced in the alkylation process through the addition of trifluoromethanesulfonic acid to the HF/sulfone alkylation catalyst.
    Type: Grant
    Filed: March 6, 1996
    Date of Patent: November 18, 1997
    Assignee: Phillips Petroleum Company
    Inventor: Bruce B. Randolph
  • Method for the production of ether and alkylate from a paraffin feedstock
    Patent number: 5689015
    Abstract: A process for the production of ethers and alkylate from a paraffin feedstock. The process includes a novel arrangement of dehydrogenation, isomerization, separation, etherification and alkylation to provide such products.
    Type: Grant
    Filed: March 8, 1996
    Date of Patent: November 18, 1997
    Assignee: Phillips Petroleum Company
    Inventors: Harold R. Hunt, Mark D. Scharre, Warren M. Ewert
  • Process for reducing the vapor pressure of gasoline by removing amylenes therefrom and enhancing the octane thereof
    Patent number: 5684220
    Abstract: A method for reducing the vapor pressure of a gasoline pool by removing amylenes therefrom. The blending octane of gasoline is enhanced by the dimerization of the amylene followed by alkylating the resultant dimate product so as to produce an alkylate end-product that has a higher octane than amylene.
    Type: Grant
    Filed: March 23, 1995
    Date of Patent: November 4, 1997
    Assignee: Phillips Petroleum Company
    Inventors: Marvin M. Johnson, Bruce B. Randolph
  • Combination of olefin oligomerization and paraffin alkylation
    Patent number: 5659096
    Abstract: In a process for alkylating C.sub.4 -C.sub.18 alkenes in the presence of an acid catalyst, propylene is separated from the alkenes feed, the propylene is oligomerized to oligomers containing maily propylene tetramers, and the propylene oligomers are then combined with the remainder of the alkene feed before the alkylation reaction is carried out.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: August 19, 1997
    Assignee: Phillips Petroleum Company
    Inventors: Bruce B. Randolph, Marvin M. Johnson
  • Method for treating the radiant tubes of a fired heater in a thermal cracking process
    Patent number: 5656150
    Abstract: A novel method for treating the radiant tubes of a fired pyrolysis heater with an antifoulant composition for inhibiting the formation and deposition of coke thereon. Such novel method includes introducing the antifoulant into the crossover conduit between the convection tubes and radiant tubes of the fired pyrolysis heater.
    Type: Grant
    Filed: August 25, 1994
    Date of Patent: August 12, 1997
    Assignee: Phillips Petroleum Company
    Inventors: Larry E. Reed, Ronald E. Brown, James P. Degraffenried, Timothy P. Murtha, Gil J. Greenwood, Timothy P. Harper, Mark D. Scharre