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7615510 |
Methods of activating chromium catalysts
New methods for activating chromium catalysts for polymerization processes decrease the amount of time required for activation and increase catalyst activity. Rapid heating to a first temperature...
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7598197 |
Catalyst cooling processes utilizing steam superheating
This invention provides processes, systems and devices for cooling catalyst, preferably regenerated catalyst, by superheating steam and boiling water. The inventive process advantageously provides...
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7595033 |
Regeneration of nt-scr catalysts
A process and device for purifying flue gases in refuse incineration plants during regeneration of a catalyst which serves for reducing nitrogen oxides, by, in a first step, removing acidic...
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7592293 |
Method for producing a multi-layer catalyst for obtaining phthalic anhydride
The present invention relates to processes for improving or optimizing a catalyst for the preparation of phthalic anhydride by gas-phase oxidation of o-xylene and/or naphthalene, which comprises...
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7592282 |
Enhancement of alkylation catalysts for improved supercritical fluid regeneration
A method of modifying an alkylation catalyst to reduce the formation of condensed hydrocarbon species thereon. The method comprises providing an alkylation catalyst comprising a plurality of active...
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7585808 |
Methods for preparing catalysts
The present invention is directed to processes for preparing supported metal catalysts comprising one or more catalytically active metals applied to a porous catalyst support and to processes that...
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7585803 |
Catalyst regeneration method
A method of operating a continuous system for a catalyst regeneration process wherein the regeneration section includes a combustion zone, at least one oxygen boost zone, a halogenation zone and a...
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7569506 |
Method for regenerating iron-loaded denox catalysts
The invention relates to a method for regenerating DeNOx catalysts having an increased SO 2 /SO 3 conversion rate as a result of the cumulation of iron compounds, and is characterized in that the...
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7569194 |
Waste heat energy recovery method and system
The current invention provides methods and apparatus for integrating a high temperature waste heat recovery system with a chemical or refining process which requires heat energy at a temperature...
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7563423 |
Method and apparatus for catalyst regeneration
The present invention relates to the regeneration of a SOx removal catalyst ( 14 ) and a NOx reducing catalyst ( 12 ). Additionally, this invention relates to the reduction or elimination of sulfur...
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7550641 |
Methods for recovering activity of molecular sieve catalysts
The invention is directed to a method of rejuvenating silicoaluminophosphate molecular sieve catalyst that has been deactivated hydrothermally as well as a method of using the rejuvenated catalyst...
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7547387 |
Method for passing a fluid through a moving bed of particles
A process for contacting a bed of particulate material, usually catalyst, with a transverse flow of fluid is disclosed. The particulate material moves or is prevented from not moving, while the...
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7491369 |
Oxidation system with internal secondary reactor
Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out...
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7423191 |
Method and system for catalytically converting oxygenates and regenerating and stripping catalyst
A method of converting oxygenate-containing feedstock to light olefins comprises charging a reactor with catalyst, feeding the feedstock into the reactor, contacting the feedstock with the catalyst...
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7419928 |
Fischer-Tropsch catalyst production
A process for enhancing the activity of a catalyst metal particulate for hydrogenation reactions comprising calcining the particulate in an oxidant-containing atmosphere to partially oxidize it...
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7384882 |
Process for regenerating titanium-containing catalysts
The present invention discloses a process for regenerating titanium-containing catalysts, characterized in that a deactivated catalyst is treated in an acidic solution having a pH value of ≦3,...
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7355086 |
Method for stabilizing catalyst activity during MTO unit operation
A method for maintaining the activity of silicoaluminophosphate (SAPO) molecular sieve catalyst particles during oxygenate to olefin conversion reactions. After regeneration of SAPO catalyst...
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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 (S 1 ) and pulverized to obtained a regenerated powder (S 2...
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7316988 |
Gas turbine single plant modifying method, a catalyst re-using method and a re-produced catalyst
A high temperature denitration catalyst of a gas turbine single plant contains TiO 2 , at least one of WO 3 and MoO 3 and V 2 O 5 of 0.5 wt % or less, preferably 0.2 wt % or less, or none of V 2...
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7297252 |
Catalyst activation in the presence of olefinic hydrocarbon for selective naphtha hydrodesulfurization
An improved catalyst activation process for olefinic naphtha hydrodesulfurization. This process maintains the sulfur removal activity of the catalyst while reducing the olefin saturation activity.
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7235220 |
Exhaust gas treatment method, exhaust gas treatment system, and catalytic oxidation apparatus
The present invention provides an exhaust gas treatment method including oxidation treatment for converting metallic mercury contained in combustion exhaust gas into mercury chloride; and mercury...
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7148176 |
Production of novel phosphane ligands and use in catalytical reactions
The present invention is directed to phosphine ligands and the use of such ligands in catalytic complexes with transition metals. The catalysts may be used in a variety of reactions and are...
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7122491 |
Method of increasing the lifetime of a hydro-oxidation catalyst
A method of increasing the lifetime of a hydro-oxidation catalyst comprising, preferably, gold, silver, or mixtures thereof, and optionally one or more promoters, on a titanium-containing support,...
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6962947 |
Pressure swing catalyst regeneration procedure for Fischer-Tropsh catalyst
A process is disclosed for regenerating a catalyst used in a process for synthesizing hydrocarbons. The synthesis process involves contacting a feed stream comprising hydrogen and carbon monoxide...
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6949488 |
Fischer-Tropsch catalyst regeneration
Methods and apparatus for providing the heat required to maintain the desired temperature for catalyst regeneration. The catalyst is heated by contacting a reactant gas mixture with the catalyst in...
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6924407 |
Pressure-tuned solid catalyzed heterogeneous chemical reactions
Improved methods for conducting solid acid-catalyzed, near- or supercritical heterogeneous chemical reactions (e.g., alkylation reactions) are provided which give enhanced product yields and permit...
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6916965 |
Treatment of acid catalysts
The invention is directed to a method of stabilizing metalloaluminophosphate molecular sieves and catalysts derived therefrom. In particular, the invention is directed to a method of treating such...
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6858761 |
Process for preserving resin catalyst for addition reaction of alkylene oxide and utilization of this process
The present invention provides a process and its utilization in a process comprising the step of carrying out an addition reaction of an alkylene oxide to an addition-receiving substance in the...
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6827908 |
Standpipe inlet for enhancing particulate solids circulation for petrochemical and other processes
In a fluid catalytic cracking (FCC) unit, a regenerator, a stripper or a withdrawal well connecting to either of the vessels, includes a standpipe for circulating catalyst from one vessel to...
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6811578 |
Fuel reforming apparatus and method of controlling same
In a fuel reforming apparatus having a reformer for reforming a raw fuel containing a hydrocarbon-containing compound so as to produce a hydrogen-rich fuel gas for use in a fuel cell, a carbon...
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6797239 |
Spent catalyst distributor
The present invention is related to methods and apparatus for improving distributions of both spent catalyst and transport gas into a regenerator of a fluid catalytic cracking unit. Spent catalyst...
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6770585 |
Momordica cochinchinensis (Spreng.) β-carotene and method
The present invention provides a process to extract oil from Momordica cochinchinensis aril to yield an edible oil rich in β-carotene. The process can be carried out without the use of any...
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6723230 |
Regeneration of iron-based hydrogen sulfide sorbents
A process to regenerate iron-based hydrogen sulfide sorbents using steam. The steam is preferably mixed with hydrogen-containing gas and/or an inert gas, such as nitrogen. In a preferred...
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6696502 |
Slurry hydrocarbon synthesis with fresh catalyst activity increase during hydrocarbon production
Fresh catalyst particles are added to a slurry hydrocarbon synthesis reactor and their activity increased by contact with hydrogen in-situ in the slurry in a catalyst activity increasing means,...
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6680030 |
Stripping process with horizontal baffles
A baffle-style stripping arrangement for an FCC process having substantially horizontal stripping baffles is disclosed. The stripping baffles comprise a perforated section and a downcomer section...
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6656870 |
Tungsten-containing fuel cell catalyst and method of making same
A tungsten-containing fuel cell catalyst having high electrochemical activity and its method of making are described. The tungsten-containing catalyst may be formed in situ in a fuel cell after the...
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6642281 |
Fischer-tropsch process
There is provided an improved system and process for the catalytic hydrogenation of carbon monoxide to form a mixture of hydrocarbons utilizing a plurality of reactors in series. Synthesis gas...
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6635795 |
Desulfurization with improved sorbent regeneration
While contacting under regeneration conditions an oxygen-containing stream with a sorbent comprising a promoter metal and zinc sulfide which has been sulfurized by contact with sulfur-containing...
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6632764 |
Method for controlling the regeneration of an NOx storage converter
An NO x concentration in exhaust gas is measured downstream of an NO x storage converter. For determining an operating state, particularly damage to the NO x storage converter, when the NO x ...
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6624204 |
Carbon monoxide hydrogenation process
A method is disclosed for renewing the activity of a Dispersed Active Metal (DAM) catalyst during operation of a reactor wherein the hydrogenation of carbon monoxide to produce a mixture of...
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6610265 |
Method and system for desulfurizing gasoline or diesel fuel for use in a fuel cell power plant
A fuel processing system is operative to remove substantially all of the sulfur present in a logistic fuel stock supply. The fuel stock can be gasoline, diesel fuel, or other like fuels which...
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6610196 |
Catalytic reforming process
A substantially water-free hydrocarbon feed is charged to a reformer reactor operated under reforming conditions; thereafter, a chlorine-containing additive is introduced, without the simultaneous...
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6579820 |
Reactor modifications for NOx reduction from a fluid catalytic cracking regeneration vessel
A process for regenerating a spent catalyst having coke deposits thereon in a catalyst regeneration vessel having a dense phase and a dilute phase, wherein the process comprises the steps of: (a)...
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6559191 |
Carbon monoxide hydrogenation (JSS-0004)
A method is disclosed for enhancing the activity of a particulate Dispersed Active Metal (DAM) catalyst during operation of a reactor wherein the hydrogenation of carbon monoxide to produce a...
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6531517 |
Process for increasing carbon monoxide hydrogenation activity of catalysts via low temperature oxidation with water, steam or mixture thereof
A process for increasing the hydrogenation activity, particularly the carbon monoxide hydrogenation activity, of a catalyst or catalyst precursor comprised of a particulate solids support component...
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6521564 |
Modification of a hydrogenation catalyst
A process for the modification of a hydrogenation catalyst of the Raney nickel, Raney cobalt, nickel-on-carrier or cobalt-on-carrier type, which process includes treating the hydrogenation catalyst...
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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...
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6486220 |
Regeneration procedure for Fischer-Tropsch catalyst
A process is disclosed for regenerating catalyst used in a process for synthesizing hydrocarbons. The synthesis process involves contacting a feed stream comprising hydrogen and carbon monoxide...
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6478952 |
Catalytic reforming process including the addition of organic aluminum halide
Deactivation of a reformer catalyst is inhibited by charging a hydrocarbon feed having a concentration of an organic aluminum halide compound to a reformer reactor operating under reforming...
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6469202 |
Method for disposal of solid catalyst
A method for washing a spent solid catalyst is disclosed which is characterized by washing the solid catalyst used for the reaction of generating an esterified compound in a device packed with the...
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