Patents Examined by Herbert Levine
  • Patent number: 4289603
    Abstract: In an integrated coking and gasification process wherein a stream of fluidized solids is passed from a fluidized bed coking zone to a second fluidized bed and wherein entrained solid fines are recovered by a scrubbing process and wherein the resulting solids-liquid slurry is stripped with a stripping gas to remove acidic gases, at least a portion of the stripping gas comprises a gas comprising hydrogen, nitrogen and methane separated from the coker products.
    Type: Grant
    Filed: May 30, 1978
    Date of Patent: September 15, 1981
    Assignee: Exxon Research & Engineering Co.
    Inventor: Charles W. DeGeorge
  • Patent number: 4267031
    Abstract: A hydrocarbon oil coking process in which the feedstock is initially preheated to a temperature below the cracking temperature of the feedstock, prior to contacting the feedstock with a flue gas obtained from the coking zone so as to preheat the feedstock to the desired coking temperature and thereafter coking the preheated feedstock at a temperature above the cracking temperature of the feedstock.
    Type: Grant
    Filed: November 26, 1976
    Date of Patent: May 12, 1981
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Hideo Hirabayashi, Hiroshi Yamaguchi, Masahiko Uemura
  • Patent number: 4265733
    Abstract: In a process for reducing the concentration of ash-forming components in a lubricating oil wherein a feedstream comprising said lubricating oil and an aqueous ammonium salt treating agent is continuously passed into a first reaction zone wherein said treating agent reacts with ash-forming components in said oil and an effluent is continuously withdrawn from said first reaction zone and subjected to filtration after removal of water therefrom, the improvement comprising introducing said feedstream into said first reaction zone by passing said feestream through a centrifugal pump along with portions of the contents of said first reaction zone.
    Type: Grant
    Filed: November 1, 1979
    Date of Patent: May 5, 1981
    Assignee: Phillips Petroleum Company
    Inventors: Donald C. Tabler, Bobby G. Gray
  • Patent number: 4264435
    Abstract: Cracking of crude oil or crude oil residues is accomplished in an adiabatic reactor which follows a partial combustion zone with the injection of superheated or shift steam into the combustion gases.Advantages are that the carbon monoxide produced by partial combustion is converted to carbon dioxide which is easily removed, there is no need to supply a separate source of fuel or hydrogen, and coke formation is substantially eliminated. The cracked oil produced in the process can be used as a quench oil and/or fuel to feed the partial combustion zone. The yields of olefins and aromatics is increased over processes using superheated steam cracking.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: April 28, 1981
    Assignee: The Dow Chemical Company
    Inventors: Arthur E. Read, Jr., Milton S. Wing, William P. Hancock
  • Patent number: 4264431
    Abstract: Residue of distillation, preferably under reduced pressure of oil sand bitumen is thermally treated in a liquid state at a temperature of 350.degree.-450.degree. C. by blowing thereinto an inert heating medium, preferably a superheated steam at a temperature of not lower than the temperature of the residue in a reaction step for 20 to 90 min to crack the residue for converting the residue to a crude synthetic oil, a combustible pitch and a gas, the resultant pitch being utilized to the steps of recovery of oil sand bitumen from oil sand and of distillation as fuel.
    Type: Grant
    Filed: June 11, 1979
    Date of Patent: April 28, 1981
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Chiwane Ishikawa, Shuichi Sugawara
  • Patent number: 4264433
    Abstract: Contaminating metals on a clay based cracking catalyst are passivated by contacting the catalyst with indium antimonide under elevated temperature conditions.
    Type: Grant
    Filed: December 11, 1979
    Date of Patent: April 28, 1981
    Assignee: Phillips Petroleum Company
    Inventor: Dwight L. McKay
  • Patent number: 4263156
    Abstract: Grease compositions containing a composite polyurea grease thickener are disclosed.
    Type: Grant
    Filed: December 21, 1979
    Date of Patent: April 21, 1981
    Assignee: Shell Oil Company
    Inventor: Gerard P. Caruso
  • Patent number: 4263126
    Abstract: This invention provides a method for converting waxy or viscous hydrocarbon oils to lower pour point or less viscous oils. By this method, reactive dispersions of zeolites, such as HZSM-5 crystals, are prepared with the oil to be converted, and conversion is effected by heating the dispersion.
    Type: Grant
    Filed: October 22, 1979
    Date of Patent: April 21, 1981
    Assignee: Mobil Oil Corporation
    Inventor: Louis D. Rollmann
  • Patent number: 4263129
    Abstract: Conversion of hydrocarbons is conducted over low acidity zeolites such as the sodium form of zeolite ZSM-5 to yield products like those produced by hydrocracking but with substantially decreased proportion of light hydrocarbons having one to four carbon atoms. (Sulfiding of sodium zeolites activates such sodium zeolites for the present purpose.) The hydrocarbon conversion is conducted with mixed-phase charge (Trickle mode) under hydrogen pressure or with liquid-phase charge in a liquid-full reactor.
    Type: Grant
    Filed: September 4, 1979
    Date of Patent: April 21, 1981
    Assignee: Mobil Oil Corporation
    Inventors: Nai Y. Chen, David S. Shihabi
  • Patent number: 4263128
    Abstract: Whole crude and bottoms fractions from distillation of petroleum are upgraded by high temperature, short time contact with a fluidizable solid of essentially inert character to deposit high boiling components of the charge on the solid whereby Conradson Carbon values, salt content and metal content are reduced. The upgraded hydrocarbon fraction may be supplied to fractionator, in which case the high temperatue contactor serves as a heater, e.g. crude heater for crude distillation, in addition to improving quality of the fractions derived by distillation. For charge stocks boiling above about 500.degree.-650.degree. F., the upgrading process yields a product suitable for charge to catalytic cracking in that Conradson Carbon, salts and metals are reduced to levels tolerable in catalytic cracking.
    Type: Grant
    Filed: November 1, 1979
    Date of Patent: April 21, 1981
    Assignee: Engelhard Minerals & Chemicals Corporation
    Inventor: David B. Bartholic
  • Patent number: 4263127
    Abstract: The preparation of food grade white mineral oils of suitable viscosity in high yield from a mineral oil distillate of suitable lubricating oil viscosity comprises contacting the distillate with hydrogen in three catalytic stages to yield a refined lubricating oil from which white mineral oil is recovered. The first reaction stage employs hydrocracking conditions. Subsequent reaction stages employ hydrogenation conditions, first with a sulfur-resistant hydrogenation catalyst and finally with a platinum group metal-containing selective hydrogenation catalyst, optionally activated with a halogen.
    Type: Grant
    Filed: January 7, 1980
    Date of Patent: April 21, 1981
    Assignee: Atlantic Richfield Company
    Inventors: Maurice K. Rausch, Daniel B. Eickemeyer, Gerald E. Tollefsen
  • Patent number: 4261814
    Abstract: The invention provides an improvement in the conventional operation of a vacuum pipestill, whereby when used with, for example, an atmospheric residuum either (a) conventional yields are obtainable with less stripping steam utilization, or (b) a deeper cut into the residuum is obtainable for conventional steam utilization. Some of the gaseous mixture normally withdrawn from the top of the vacuum pipestill for washing and removal is fed into compression and recycle means and recycled to the stripping zone of the pipestill to replace, or augment, the conventionally used stripping steam.
    Type: Grant
    Filed: November 22, 1978
    Date of Patent: April 14, 1981
    Assignee: Exxon Research and Engineering Co.
    Inventor: Klaus A. Pfeifer
  • Patent number: 4261844
    Abstract: Polyurea grease compositions containing the reaction product of certain diisocyanates and specified amines, particularly N,N-bis(3-amino propyl)methylamine, and having improved mechanical properties, are disclosed.
    Type: Grant
    Filed: December 21, 1979
    Date of Patent: April 14, 1981
    Assignee: Shell Oil Company
    Inventor: Gerard P. Caruso
  • Patent number: 4260474
    Abstract: To obtain olefins by the thermal cracking of hydrocarbons, e.g., vacuum gas oil, by hydrogenation and subsequent steam cracking, an intermediate fractionation of the hydrogenate is provided so that the light fraction enriched in branched isomers can be used as fuel and the heavy fraction only is subjected to the steam cracking.
    Type: Grant
    Filed: October 9, 1979
    Date of Patent: April 7, 1981
    Assignee: Linde Aktiengesellschaft
    Inventors: Hans J. Wernicke, Walter Kreuter, Claus Schliebener
  • Patent number: 4260839
    Abstract: A process for effecting an endothermic and an exothermic reaction, under conversion conditions, in a single reaction zone wherein ethane is endothermically converted to C.sub.3 + hydrocarbons, and wherein an unconverted portion of ethane is simultaneously exothermically hydrogenated to methane in the presence of a catalyst system comprising a crystalline aluminosilicate zeolite having a uniform structure characterized by pores, the major dimension of which is less than 6 Angstroms and ZSM-5 type aluminosilicate zeolite, containing a minor amount of Zn in combination with a Group VIII noble metal or a Group IB metal, the exothermic reaction providing sufficient heat to maintain the reaction zone at a temperature capable of sustaining the endothermic reaction.
    Type: Grant
    Filed: July 16, 1979
    Date of Patent: April 7, 1981
    Assignee: Mobil Oil Corporation
    Inventors: Nai Y. Chen, Werner O. Haag, Tracy J. Huang
  • Patent number: 4260476
    Abstract: An improvement to a continuous solvent extraction-steam-distillation process for the recovery of aromatic hydrocarbons in the range of C.sub.6 -C.sub.16 from a feed stream containing such aromatics and aliphatic hydrocarbons in the range of C.sub.5 -C.sub.16 which resides in using two extractive distillation zones thermally linked to recover heat and solvent, thereby resulting in a heat savings.
    Type: Grant
    Filed: January 31, 1980
    Date of Patent: April 7, 1981
    Assignee: Union Carbide Corporation
    Inventors: Jose A. Vidueira, Paulino Forte, George S. Somekh
  • Patent number: 4259175
    Abstract: Reduction of SO.sub.x emissions from the regenerator associated with the fluidized catalytic cracking (FCC) unit for converting hydrocarbon feedstocks into more valuable products is achieved by introducing into the FCC cycle one or more organic, aluminum-containing compounds in dissolved form. In the catalytic cracking zone, the dissolved aluminum-containing compounds are converted to aluminum compounds that deposit relatively uniformly upon the catalyst particles. Also depositing upon the catalyst particles in the catalytic cracking zone are deactivating quantities of sulfur-containing coke. When such catalyst particles are introduced into the regenerator, wherein the sulfur-containing coke present on the catalyst surfaces is removed by combustion, thereby activating the catalyst particles, the SO.sub.x so produced reacts with the deposited aluminum compounds to form one or more stable, sulfur-aluminum oxidic compounds, thus desulfurizing the regenerator flue gas.
    Type: Grant
    Filed: October 10, 1978
    Date of Patent: March 31, 1981
    Assignee: Union Oil Company of California
    Inventor: Dennis P. McArthur
  • Patent number: 4259169
    Abstract: A process for the separation of n-paraffins from hydrocarbon by means of solid urea wherein the formation of the adduct of n-paraffins with urea is carried out in a fluidized bed.
    Type: Grant
    Filed: May 25, 1979
    Date of Patent: March 31, 1981
    Assignee: s.a. Texaco Belgium n.v.
    Inventors: Sidney T. G. Gale, Paula J. J. Spreutels
  • Patent number: 4259170
    Abstract: This invention provides an improved method for manufacturing a slate of lubricant base stocks from a paraffin base or a mixed base crude. In one embodiment of this invention, the bright stock raffinate is catalytically dewaxed with a catalyst comprising ZSM-5, for example, and the neutral oil raffinates are solvent dewaxed. The combined use of solvent and catalytic dewaxing as described herein provides a highly efficient method of manufacture without loss of product quality.
    Type: Grant
    Filed: September 14, 1979
    Date of Patent: March 31, 1981
    Assignee: Mobil Oil Corporation
    Inventors: Ronald I. Graham, Edwin A. Hicks
  • Patent number: 4257872
    Abstract: The present invention provides a process for low pressure catalytic hydrocracking of refractory hydrocarbon charge stocks, such as coker gas oil or shale oil to products of reduced pour points by catalytic hydrotreating and cascading the hydrotreater effluent through a hydrocracking zone, containing a catalyst which is characterized by an alkali metal substantilly non-acidic crystalline zeolite having an alpha activity of less than about 10, a silica/alumina ratio of at least about 12 and a constraint index of approximately 1 to 12.
    Type: Grant
    Filed: October 22, 1979
    Date of Patent: March 24, 1981
    Assignee: Mobil Oil Corporation
    Inventors: Rene B. La Pierre, David S. Shihabi, Robert L. Smith