Matches 51 - 100 out of 169 < 1 2 3 4 >
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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...
6465529 Process for increasing cobalt catalyst hydrogenation activity via aqueous low temperature oxidation  
An aqueous low temperature oxidation (ALTO) process wherein a catalyst or catalyst precursor constituted of a solids support, or powder component, and a metal, or metals component, inclusive of...
6458266 Catalytic reforming process with inhibition of catalyst deactivation  
A substantially water-free hydrocarbon feed is charged to a multiple-reactor reformer system being operated under reforming conditions and comprising at least two reformer reactors serially...
6455456 Method for the in-situ cleaning of the catalytically active surfaces of SCR substrate  
A method and apparatus for cleaning the catalytically active surfaces of selective catalytic reduction (SCR) substrate, and more particularly such a method and apparatus which: simultaneously...
6413434 Method for eliminating halogenated compounds contained in a gas or liquid  
The present invention concerns a process for eliminating, reducing and/or suppressing halogenated compounds, in particular chlorinated compounds, contained in a gas or a liquid, in which the gas or...
6365543 Process for the production of an oxidation catalyst on-line  
A process and catalyst for the partial oxidation of paraffinic hydrocarbons, such as ethane, propane, naphtha, and natural gas condensates, to olefins, such as ethylene and propylene. The process...
6365761 Process for preparing alkylene oxide  
Process for the preparation of alkylene oxide, which process comprises passing a feed comprising an organic hydroperoxide and alkene through a bank of at least two serially connected reactors all...
6362122 Regeneration of spent zeolite compositions  
A process for regenerating spent zeolite composites. The process involves contacting the composite, either as a shaped article or a fine powder, with a caustic solution, e.g., sodium hydroxide at...
6331574 Process for the preparation of high activity carbon monoxide hydrogenation catalysts; the catalyst compositions, use of the catalysts for conducting such reactions, and the products of such reactions  
A process for the preparation of a catalyst useful for conducting carbon monoxide hydrogenation reactions, especially Fischer-Tropsch reactions. The steps of the process begin with the activation,...
6291391 Method for presulfiding and preconditioning of residuum hydroconversion catalyst  
An improved method is described for presulfiding and preconditioning a residuum hydrotreating or hydrocracking catalyst as an integrated part of the hydroconversion process in which catalyst is...
6280701 Method for the treatment of a methanol reforming catalyst  
A method for the treatment of a methanol reforming catalyst includes pre-aging the catalyst by baking it out in a dry atmosphere in order thereby to complete its inherent initial loss of volume...
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: ...
6217712 Catalytic simulation using radio frequency waves  
The invention relates to a method of using radio frequency waves to artificially create catalytic action in a catalyst-free chemical reaction within a substance. To mimic or imitate the catalyst,...
6090737 Removal of lead from organic diaryl carbonate reaction mixtures  
A method for efficient removal of lead co-catalyst species from organic process streams arising from diaryl carbonate synthesis, by contacting the organic reaction mixtures with an aqueous acid,...
6051518 Microbial process and composition for the regeneration of catalysts  
The present invention relates to a biological process for regenerating metal-containing sulfide mitigation catalysts that are commonly known in the natural gas processing industry as liquid redox...
6037290 In situ regeneration of metal-molybdate catalysts for methanol oxidation to formaldehyde  
The method of the present invention involves in situ regeneration of metal-molybdate catalyst for methanol oxidation to formaldehyde comprising the step of regenerating spent metal-molybdate...
6034016 Method for regenerating halogenated Lewis acid catalysts  
A method for removing high molecular weight solid and liquid tars and oligomers from halogenated Lewis acids catalysts is disclosed. The Lewis acids incorporating such tars and oligomers are...
6030915 Process for preparing a large pore hydroprocessing catalyst  
The present invention relates to a process for preparing a hydroprocessing catalyst comprising the steps of subjecting a spent hydroprocessing catalyst comprising carbonaceous and sulphurous...
6010619 FCC process with zeolite and hydrotalcite  
Crystalline materials having increased mechanical strength and improved chemical properties are provided by incorporating carbonate by contact treatment with carbon dioxide (CO 2 ) to modify the...
5998324 Procedure for the regeneration of catalysts and adsorbent materials  
Procedure for the regeneration of catalysts and adsorbent materials, which comprises the thermal desorption of adsorbed substances, with water in liquid condition, at high temperature or with water...
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...
5965472 Recovery of catalyst systems from diaryl carbonate-containing reaction solutions by suspension crystallization  
Catalyst systems with a content of a platinum-group-metal catalyst, a co-catalyst, a quaternary salt and a base for the oxidative carbonylation of aromatic hydroxy compounds to the corresponding...
5942458 Regeneration of spent As-poisoned lead catalysts  
Spent lead catalysts containing contaminating amounts of arsenic values, e.g., mixed oxides of lead and arsenic, are regenerated and rendered suitable for reuse by heat-treating same at a...
5938927 Process for extracting oil from contaminated filter media  
Oil and oil additives separated from a contaminated solid particulate filter medium, preferably diatomaceous earth particles. Portions of a mixture of oil, oil additives and the filter medium are...
5928980 Attrition resistant catalysts and sorbents based on heavy metal poisoned FCC catalysts  
A heavy metal poisoned, spent FCC catalyst is treated by chemically impregnating the poisoned catalyst with a new catalytic metal or metal salt to provide an attrition resistant catalyst or sorbent...
5919425 Catalyzed packing material for regenerative catalytic oxidation  
Homogeneous catalytic regenerative heat transfer packing material is made by impregnating ceramic packing material with a solution of a catalyst precursor and then fixing the precursor into...
5877108 Performance of used molybdenum based catalysts by the addition of ammonium dimolybdate  
A process for regenerating molybdenum containing ammoxidation catalyst comprising replacing the molybdenum loss from the catalyst during the ammoxidation reaction wherein ammonium dimolybdenum is...
5877107 Method for producing a catalytic converter  
A method for producing a catalytic converter including a honeycomb body having flow channels with catalytically active surfaces, includes at least partially cleaning foreign materials from a...
5854161 Process for the regeneration of a catalyst  
A process is provided for the regeneration of a vanadium-phosphorus oxide catalyst which has been used in a process for the preparation of maleic anhydride by oxidizing butane. The used catalyst...
5844006 Process for producing liquid and, optionally, gaseous products from gaseous reactants  
A process for producing liquid and, optionally, gaseous products from gaseous reactants comprises feeding gaseous reactants into a slurry bed of solid particles suspended in a liquid; allowing the...
5817589 Regeneration of catalyst comprising flushing with inert gas followed by flushing with hydrogen  
A process for regenerating a spent hydrogenation catalyst, comprising the steps of providing a catalyst comprising a support material selected from the group consisting of an inorganic...
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...
5773378 Spent catalyst distribution  
A regenerator in a FCC unit, with the reactor elevated above the regenerator and a side entry spent catalyst introduction to the regenerator, is modified by installing a spent catalyst distribution...
5763732 Method of isomerizing N-paraffins into isoparaffins  
A method of isomerizing n-paraffins into isoparaffins in a cut of hydrocarbons with four carbon atoms or of hydrocarbons with five and/or six carbon atoms. The cut being processed enters at least...
5710083 Process to rejuvenate spent zinc oxide sorbents  
A process to rejuvenate a spent sorbent to produce a rejuvenated sorbent is provided. This process comprises: (a) contacting a spent sorbent with a zinc composition that comprises zinc oxide, or a...
5620935 Method for the regeneration of a catalyst  
Zeolites containing titanium atoms used as catalyst for the preparation of epoxides from olefins and hydrogen peroxide are regenerated by treating the spent catalyst with hydrogen peroxide in the...
5595949 Scrubber system for removing carbon dioxide from a metal-air or fuel cell battery  
A method for maximizing the effective life and utilization of CO 2 -absorbent material in a scrubber system for removing carbon dioxide from an air inflow to a metal-air battery or fuel cell...
5559066 Preparation of iron-, potassium- and cerium-containing catalysts  
A process for the preparation of iron-, potassium- and cerium-containing catalysts for the dehydrogenation of hydrocarbons from the same spent catalysts (regeneration) by grinding and, if...
5547909 Regeneration of hydrogen fluoride alkylation catalyst  
An improved process for the regeneration of an ASO-containing HF catalyst by the removal of ASO from said catalyst through the utilization of a separation column equipped with fixed valve...
5545600 Process for the preparation of dialkyltin dialkoxide  
A process for making a catalyst product which comprises reacting dialkyltin oxide with an alcohol and the corresponding dialkyl carbonate at a temperature in the range between about 50° to 200°...
5538623 FCC catalyst stripping with vapor recycle  
An FCC process and apparatus operates with closed reactor cyclones and a catalyst stripper using H2 or recycled stripper vapor for stripping gas. Preferably stripper vapor is removed, cooled and...
5529963 Process for the regeneration of a deactivated, carbon-covered, fine-grained, heat-resistant catalyst  
The invention relates to a process for the regeneration of a deactivated, carbon-covered, fine-grained, heat-resistant catalyst, a pumpable suspension of deactivated catalyst being injected into a...
5527750 Catalyst regeneration procedure for sulfur-sensitive catalysts  
A method of regenerating a sulfur-sensitive hydrocarbon conversion catalyst by employing sulfur-contaminated heat-transfer equipment of a hydrocarbon conversion process is disclosed. This method is...
5491271 Detergent alkylation using a regenerable clay catalyst  
Tetrahedrally charged clays have been found to be active, regenerable catalysts in detergent alkylation, both as delaminated and pillared clays. The pillared saponites and beidellites are...
5484470 Enhancement of gold lixiviation using nitrogen and sulfur heterocyclic aromatic compounds  
An improved process for dissolving gold metal in ligand and oxidant lixiviation systems, wherein the solubility of gold is enhanced by the addition of heterocyclic aromatic compounds containing...
5466645 Method for reactivating nitrogen-treated carbon catalysts  
A method is provided for the restoration of catalytic activity in deactivated nitrogen-treated carbon catalysts. Nitrogen-treated carbon catalysts are those carbonaceous chars which have been...
5436211 Process for the recovery of adsorbed solvents  
The invention concerns a process for the recovery of a solvent adsorbed in an adsorber, or other substances which are condensable. The adsorber (3) is, at first, heated to a temperature which is...
5405812 Method and arrangement for purifying a carbon-containing adsorption medium  
In a method for purifying a carbon-containing adsorption medium used for treating flue gases within a flue gas scrubbing process the adsorption medium is introduced into an adsorption medium...
5403566 Recovery of hydrogenation catalysts from solutions of hydrogenated nitrile rubber  
Rhodium and ruthenium catalysts can be recovered from solutions of hydrogenated nitrile rubber by addition onto organosiloxane-based absorbers.
5386071 Process for producing aromatics from a C.sub.5 /C.sub.6 feedstream  
This invention relates to a process for convening C 5 /C 6 hydrocarbons to aromatic products, e.g., benzene, toluene, etc. The process involves first flowing the C 5 /C 6 feedstream to a first...
Matches 51 - 100 out of 169 < 1 2 3 4 >