Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7935650 | Neutralization of quench stream in a process for handling catalyst from an oxygenate-to-olefin reaction The present invention provides a process for separating and disposing of catalyst in an oxygenate to olefins reaction system. Oxygenates are converted to olefins in a reactor in the presence of a catalyst having carbonaceous deposits, then effluent stream comprising... | 05/03/2011 |
| 7790646 | Conversion of fine catalyst into coke-like material A process for converting fine catalyst slurried in heavy oil into a coke-like material from which catalytic metals can be recovered comprises mixing fine catalyst slurried in heavy oil with solvent, which causes asphaltenes in the heavy oil to precipitate from the h... | 09/07/2010 |
| 7439414 | Oxygenate conversion catalyst processing Improved processing of spent catalyst from an oxygenate-containing feedstock to olefins conversion process is realized through the employment of a barrier filter to treat a catalyst particle-containing flue gas resulting from a catalyst regenerator. The barrier filt... | 10/21/2008 |
| 7335618 | Method for manufacturing hydrorefining catalyst, and metal recovery method A heavy oil is hydrorefined using a hydrorefining catalyst. A spent hydrorefining catalyst whose activity has decreased is heat treated (S1) and pulverized to obtained a regenerated powder (S2). This regenerated powder is fractionated according to its ... | 02/26/2008 |
| 7284665 | Method and apparatus for processing articles Apparatus is described for processing articles. It has a hollow drum having permeable walls. At one end there is an inlet for receiving articles onto an inside surface of the permeable walls. At the other end is an outlet for discharging articles from the drum. The ... | 10/23/2007 |
| 7045554 | Method for improved Fischer-Tropsch catalyst stability and higher stable syngas conversion The present invention is generally related towards methods for preparing and using a more stable synthesis catalysts. In particular, the present invention is directed towards treating synthesis catalysts with low levels of oxygen to deactivate the smaller more unsta... | 05/16/2006 |
| 7011809 | Attrition resistant gamma-alumina catalyst support A γ-alumina catalyst support having improved attrition resistance produced by a method comprising the steps of treating a particulate γ-alumina material with an acidic aqueous solution comprising water and nitric acid and then, prior to adding any catalytic materi... | 03/14/2006 |
| 6960548 | Method for regenerating used absorbents derived from treatment of thermal generator fumes Process and device for regeneration of a used absorbent from a desulfurization zone or from the desulfurization of a gas containing sulfur oxides, comprising regeneration simultaneously with filtering of the absorbent, in a reducing atmosphere, wherein partial combu... | 11/01/2005 |
| 6814878 | Process for carrying out a hydrogenation reaction and removing pyrophoric catalyst A batch process for carrying out a hydrogenation reaction comprises mixing a pyrophoric catalyst with reactants and solvents to form a reaction mixture in a reaction vessel. Hydrogen is added to the reaction vessel. After hydrogenation, the desired hydrogenation pro... | 11/09/2004 |
| 6800585 | Catalyst for selective catalytic reduction of nitrogen oxides and a method for preparing the same Disclosed are a catalyst for selective catalytic reduction of nitrogen oxides and a method for preparing the same. Useful for the removal of nitrogen oxides is a catalyst prepared using spent catalysts having been absorbed with vanadium, nickel and sulfur in the hyd... | 10/05/2004 |
| 6541525 | Slurry catalyst rejuvenation in-situ in slurry reactor A process for rejuvenating reversibly deactivated catalyst particles in a three-phase slurry body of gas bubbles and catalyst particles in a slurry liquid, includes passing slurry from the top down to the bottom of the body through a slurry catalyst rejuv... | 04/01/2003 |
| 6506701 | Rapid purification by polymer supported quench Novel polymer-supported quenching reagents of Formula I, P--L--Q I wherein P is a polymer of low chemical reactivity which is soluble or insoluble; Q is one or more quenching reagents, or an acid or base addition salts thereof, that are capable of selective covale... | 01/14/2003 |
| 6451173 | Separator system An improved apparatus useful in a process for separating a liquid stream (which can be an HF catalyst mixture) having a first liquid component (which can be HF), a second liquid component (which can be light ASO) and a third liquid component (which can be... | 09/17/2002 |
| 6248683 | Process for the regeneration of used silica gel The present invention is concerned a process for the regeneration of the spent silica gel used in chromatography and for any other kind of silica. The process comprises 5 main steps, namely: washing with an extractant of organic compounds and removing volatile... | 06/19/2001 |
| 6066679 | Slurry hydrocarbon synthesis with cyclic co purge and catalyst rejuvenation Partially deactivated catalyst in a slurry hydrocarbon synthesis process is rejuvenated employing a cyclic rejuvenation process in which syngas or CO flow into the slurry is stopped to stop the hydrocarbon synthesis reaction, the CO purged out of the slur... | 05/23/2000 |
| 5985133 | Control of particle size distribution in an FCC unit Circulating equilibrium catalyst (ECAT) in a fluidized catalytic cracking (FCC) is gently attrited in an internal or closely coupled attriter to produce fines and attrited catalyst which is recycled to the FCC unit for fines removal. Average particle size... | 11/16/1999 |
| 5973012 | Hydrocarbon synthesis catalyst slurry rejuvenation with gas disengagement (LAW 783) A reversibly deactivated, particulate catalyst in a slurry hydrocarbon synthesis slurry is rejuvenated by circulating the slurry from a slurry body through (i) a gas disengaging zone to remove gas bubbles from the slurry, (ii) a catalyst rejuvenation zone... | 10/26/1999 |
| 5972201 | Hydrocarbon conversion catalyst additives and processes Magnetic separation of fluid cracking catalyst and magnetic hooks can be improved by adding antimony, in the feed or during catalyst manufacture, to enhance the magnetic susceptibility, thus increasing the separation efficiency of the older less active fl... | 10/26/1999 |
| 5958986 | Slurry hydrocarbon synthesis process with catalyst rejuvenation in external lift pipe (law544) A reversibly deactivated hydrocarbon synthesis catalyst in a hydrocarbon synthesis slurry is rejuvenated by passing the slurry into a lift pipe external of the reactor in which it contacts a hydrogen containing rejuvenating gas. The hydrogen rejuvenates t... | 09/28/1999 |
| 5877331 | Prevention of catalyst attrition and tar formation in manufacture of maleic anhydride Improved methods and apparatus for manufacture of maleic anhydride by catalytic oxidation of n-butane or other hydrocarbon having four carbon atoms in a straight chain over a fixed catalyst bed comprising a phosphorus vanadium oxide catalyst. Movement of ... | 03/02/1999 |
| 5866621 | Gas and solids reducing slurry downcomer Particulate solids and gas are removed from a three phase hydrocarbon synthesis slurry of solid catalyst particles, gas and liquid, by successively passing slurry from a slurry body through solids and gas disengaging zones in fluid communication, with the... | 02/02/1999 |
| 5844005 | Hydrocarbon synthesis using reactor tail gas for catalyst rejuvenation Hydrogen containing tail gas from a hydrocarbon synthesis reactor is used as a hydrogen containing catalyst rejuvenating gas. If CO is present, the CO content, is less than 10 mole % of the gas and the H2 to CO mole ratio is greater than 3:1. A... | 12/01/1998 |
| 5821270 | Slurry hydrocarbon synthesis process with multistage catalyst rejuvenation A reversibly deactivated hydrocarbon synthesis catalyst in a hydrocarbon synthesis slurry is rejuvenated by successively passing the slurry through at least two rejuvenation stages external of the slurry reactor, each of which comprises a rejuvenation zon... | 10/13/1998 |
| 5817702 | Hydrocarbon synthesis catalyst slurry rejuvenation with gas disengagement A reversibly deactivated, particulate catalyst in a slurry hydrocarbon synthesis slurry is rejuvenated by circulating the slurry from a slurry body through (i) a gas disengaging zone to remove gas bubbles from the slurry, (ii) a catalyst rejuvenation zone... | 10/06/1998 |
| 5817701 | Slurry hydrocarbon synthesis with cyclic CO purge and catalyst rejuvenation Partially deactivated catalyst in a slurry hydrocarbon synthesis process is rejuvenated employing a cyclic rejuvenation process in which syngas or CO flow into the slurry is stopped to stop the hydrocarbon synthesis reaction, the CO purged out of the slur... | 10/06/1998 |
| 5811469 | Slurry hydrocarbon synthesis with downcomer fed product filtration (LAW552) Hydrocarbon liquid products are filtered and removed from a three phase hydrocarbon synthesis slurry comprising gas bubbles and particulate catalyst solids in a hydrocarbon liquid, by circulating the slurry through a gas disengaging downcomer immersed in ... | 09/22/1998 |
| 5811363 | Catalyst rejuvenation in hydrocarbon synthesis slurry with reduced slurry recontamination A reversibly deactivated, particulate catalyst in a hydrocarbon synthesis slurry is rejuvenated by circulating the slurry from a slurry body through a rejuvenation zone in which hydrogen contacts the slurry and rejuvenates the catalyst to form a rejuvenat... | 09/22/1998 |
| 5811468 | Combination gas disengaging downcomer-rejuvenation tube for in-situ slurry catalyst rejuvenation (LAW541) A reversibly deactivated, particulate catalyst in a hydrocarbon synthesis slurry is rejuvenated by circulating the slurry from a slurry body through (i) a gas disengaging zone to remove gas bubbles from the slurry and increase its density, (iii) a downcom... | 09/22/1998 |
| 5770629 | Slurry hydrocarbon synthesis with external product filtration A slurry hydrocarbon synthesis process employs a slurry filtration vessel external of the slurry reactor. Slurry from the reactor is passed through one or more gas and solids disengaging zones, one or more of which may be present in the reactor and vessel... | 06/23/1998 |
| 5690836 | Method of removing catalyst A method of removing a catalyst, particularly Raney nickel, from a catalytic reaction product, particularly a hydrogenation reaction product, by passing the catalytic reaction product containing the solid catalyst through a hollow tubular filter medium wh... | 11/25/1997 |
| 5538624 | Process, apparatus and compositions for recycle of cracking catalyst additives An improved catalytic process for heavy hydrocarbon conversion (usually but not necessarily in the presence of nickel and vanadium in the feedstock and on the catalyst) to produce lighter and selective molecular weight fractions. This process is specifica... | 07/23/1996 |
| 5464528 | FCC process and apparatus with upset tolerant third stage separator An inertial/filtering separator in a single vessel and FCC process using same as a third stage separator are disclosed. Gas and fines are added tangentially to an annulus formed by a cylindrical insert in a vessel. Gas flows over the insert and down to fi... | 11/07/1995 |
| 5364827 | Composition comprising magnetically active moieties for magnetic beneficiation of particulates in fluid bed hydrocarbon processing By continuously or intermittently adding amounts of magnetically active moieties, e.g. iron compounds, over time so that the moiety deposits on a catalyst or sorbent in a fluid catalytic cracker or similar circulating hydrocarbon conversion unit, older ca... | 11/15/1994 |
| 5356845 | Process for the reactivation of nickel-alumina catalysts A process for the reactivation, or rejuvenation of a nickel-alumina catalyst employed in the production of a gas comprised of an admixture of hydrogen and carbon monoxide, or synthesis gas, by the conversion, in a reactor, or reaction zone, of light hydro... | 10/18/1994 |
| 5332704 | Fluidized process for improving the quality of a particulate regenerated solid A fluidized solid process for upgrading or converting a hydrocarbon feedstock wherein carbonaceous deposits accumulate on a particulate fluidized solid and are burned in a regenerator to regenerate the solid, the regenerated solid and entrained combustion... | 07/26/1994 |
| 5298475 | Carbon dioxide absorber and method for manufacturing same from building industrial waste A carbon dioxide consuming material and a method for manufacturing it from waste released in the building industry, including: a primary crushing step 5 for crushing concrete fragments 1 under a pressure; a secondary crushing step 7 for crushing or smashi... | 03/29/1994 |
| 5290431 | FCC process with concentrators on cyclone inlets A multi-stage cyclone for fluidized catalytic cracking of heavy oils is disclosed. A low efficiency inertial separator concentrates solids, FCC catalyst and fines, by forcing gas and entrained solids to make from 1/2 to 3/4 turn. Gas, with most of the sol... | 03/01/1994 |
| 5286691 | Demetallation in FCC regenerator A process for demetallizing metals contaminated FCC catalyst in an FCC regenerator. A metals getter additive, with higher settling velocity, is added to the regenerator, to remove metals from FCC catalyst by solid-solid interaction. The FCC catalyst forms... | 02/15/1994 |
| 5260240 | Process for the demetallization of FCC catalyst A process is disclosed for passivating the reactivity of contaminant metals, such as nickel and vanadium, which have been deposited on a catalytic cracking catalyst, by adding to the cracking catalyst a mixture of a calcium-containing material and a magne... | 11/09/1993 |
| 5250482 | Process for magnetic beneficiating petroleum cracking catalyst A process for beneficiating a particulate zeolite petroleum cracking catalyst having metal values in excess of 1000 ppm nickel equivalents. The particulate catalyst is passed through a magnetic field in the range of from about 2 Tesla to about 5 Tesla gen... | 10/05/1993 |
