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| Number | Title | Issue Date |
| 7404939 | Mercury removal sorbent A sorbent composition comprising a vanadium compound and a TiO2 support material is disclosed. Methods of making and using the composition to remove heavy metals or heavy metal containing compounds from a fluid stream are also provided. Such methods are p... | 07/29/2008 |
| 7399456 | Process for the removal of heavy metals from gases, and compositions therefor and therewith A composition, containing vanadium, phosphorus and a support is disclosed. A method of preparing such composition is also disclosed. The composition is employed in a process to remove a heavy metal from a gaseous feed stream which can optionally include a separate h... | 07/15/2008 |
| 7399457 | Process for the removal of heavy metals from gases, and compositions therefor and therewith A composition containing silica and vanadium, wherein at least a portion of the vanadium is present as a distorted octahedral and in a phase selected from the group consisting of amorphous, nano-crystalline, and combinations thereof, is disclosed. A method of prepar... | 07/15/2008 |
| 7326346 | High capacity regenerable sorbent for removal of arsenic and other toxic ions from drinking water The present invention is directed to a sorbent comprising a disordered polyvalent metal oxide on the surface of an inert substrate. The substrate can be a layered silicate, such as vermiculite, an aluminosilicate such as montmorillonite, or a nonlayered silicate suc... | 02/05/2008 |
| 7288499 | Regenerable high capacity sorbent for removal of mercury from flue gas A regenerable, high-capacity sorbent for removal of mercury from flue gas and processes and systems for making and using the sorbent. A phyllosilicate substrate, for example vermiculite or montmorillinite, acts as an inexpensive support to a thin layer for a polyval... | 10/30/2007 |
| 7183235 | High capacity regenerable sorbent for removing arsenic and other toxic ions from drinking water The present invention is directed to a sorbent comprising a disordered polyvalent metal oxide on the surface of an inert substrate. The substrate can be a layered silicate, such as vermiculite, an aluminosilicate such as montmorillonite, or a nonlayered silicate suc... | 02/27/2007 |
| 7098327 | Dual-functional ion exchange resins from agricultural by-products A process for the production of dual-functional ion exchange resins from lignocellulosic agricultural material involving anionization of the lignocellulosic agricultural material with citric acid and then cationization of the lignocellulosic agricultural material wi... | 08/29/2006 |
| 7063793 | Apparatus and method for removing mercury and mercuric compounds from dental effluents The present invention is directed to processes for removing a contaminant from dental effluents and includes transporting a three-phase effluent through a suction line into a particle collection vessel, introducing a suction line cleaning solution which includes a r... | 06/20/2006 |
| 7048781 | Chemically-impregnated silicate agents for mercury control The present invention is directed to a contaminant removal agent comprising a polyvalent metal sulfide on the surface of an inert substrate. The substrate can be a layered silicate, such as vermiculite, an aluminosilicate such as montmorillonite, or a nonlayered sil... | 05/23/2006 |
| 7008896 | Situ formed anionic clay-containing bodies The present invention is directed to a process for the preparation of crystalline anionic clay-containing bodies from sources comprising a trivalent metal source and a divalent metal source comprising the steps of: a) preparing a p... | 03/07/2006 |
| 6942840 | Method for removal and stabilization of mercury in mercury-containing gas streams The present invention is directed to a process and apparatus for removing and stabilizing mercury from mercury-containing gas streams. A gas stream containing vapor phase elemental and/or speciated mercury is contacted with reagent, such as an oxygen-containing oxid... | 09/13/2005 |
| 6911570 | Method for fixating sludges and soils contaminated with mercury and other heavy metals The invention relates to a method, composition and apparatus for stabilizing mercury and other heavy metals present in a particulate material such that the metals will not leach from the particulate material. The method generally involves the application of a metal ... | 06/28/2005 |
| 6764601 | Method for granulating powders The invention relates to a process of coating inorganic particles with organic compositions, and agglomerating, compacting and heating of the coated particles into granules. Coating and compacting the agglomeration may be conducted continuously, and may be used to f... | 07/20/2004 |
| 6595147 | Method for adsorbing contaminants from flue gas A method and apparatus for controlling or removing mercury, mercury compounds and high molecular weight organics, if present, from a resource recovery exhaust stream by separately adding a carbonaceous char to the flue gas while it is still within the uni... | 07/22/2003 |
| 6551660 | Method for removing reactive metal from a reactor system A method for reducing catalyst contamination in a hydrocarbon conversion reactor system, comprising the steps of contacting at least a portion of a metal-coated hydrocarbon conversion reactor system comprising a reactive metal with a getter to produce a m... | 04/22/2003 |
| 6490984 | Method of making flue gas harmless Formation of dioxins in flue gases is inhibited by contacting the flue gas with at least one of sodium phosphite, calcium phosphate, sodium hypophosphite, and calcium as reducing agents preferably at a temperature in the range of from 150° C. to 850° C.... | 12/10/2002 |
| 6439138 | Char for contaminant removal in resource recovery unit A method and apparatus for controlling or removing mercury, mercury compounds and high molecular weight organics, if present, from a waste incineration apparatus exhaust stream by separately adding a carbonaceous char to the flue gas while the flue gas is... | 08/27/2002 |
| 6419986 | Method for removing reactive metal from a reactor system A method of removing reactive metal from a metal-coated reactor system, comprising contacting at least a portion of a metal-coated reactor system containing reactive metal with a getter to produce movable metal, and fixating the movable metal, the getter,... | 07/16/2002 |
| 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 (CO2) to modify the alkaline earth oxide morphology. Alkaline earth-con... | 01/04/2000 |
| 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 |
| 5919287 | Process for the purification of a solution of lithium salts contaminated by metallic cations and use of this process in the production of zeolites exchanged with lithium A process for the purification of a solution of lithium salts contaminated by metallic cations, comprising (i) passing the solution to be purified through an exchange region packed with a material suitable for the exchange of Li+ cations by co... | 07/06/1999 |
| 5906960 | Adsorbent An adsorbent that can be used to remove environmental contaminants such as organics, cations and anions in a single process step is prepared from humic acid. The adsorbent can be a soluble humic acid in liquid form (e.g., in aqueous solution) or the humic... | 05/25/1999 |
| 5858242 | Heavy metal cation recovering agent including a silicate or aluminosilicate type compound and a carbonate type compound An agent for recovering heavy metal cations from an aqueous effluent, including a silicate or aluminosilicate type compound, e.g. an alkali metal silicate or aluminosilicate, and a carbonate type compound, e.g. an alkali metal carbonate, and preferably a ... | 01/12/1999 |
| 5858208 | Methods for improving conversion in fluidized catalytic cracking units The present invention, therefore, is directed to a novel method for improving conversion in a fluidized catalytic cracking unit feed stream containing vanadium. According to the method, an effective amount of a composition comprising at least one overbase... | 01/12/1999 |
| 5711015 | Chemical decontamination using natural or artificial bone A method of decontaminating a site of metals, particularly radioactive metals, is provided. The contaminated material is contacted with pulverized bone, which sorbs the metals from the contaminated material. The bone may be derived from any animals having... | 01/20/1998 |
| 5419834 | Precipitating agent for the precipitation of heavy metals A precipitating agent containing thioacetamide is described for the precipitating of heavy metals from flue gases and waste waters, it containing thioacetamide (C2 H5 SN) in a 1-20% aqueous solution, which, in addition, contains a bu... | 05/30/1995 |
| 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 reactor where the adsorption medium adsorbs pollutants from the ... | 04/11/1995 |
| 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 |
| 5308810 | Method for treating contaminated catalyst A method of treating spent selective catalytic reduction (SCR) catalyst is provided, which method comprises contacting the spent catalyst with a solution comprising a SCR catalyst metal salt, preferably a vanadium salt, and heating the catalyst contacted ... | 05/03/1994 |
| 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 |
| 5264200 | Monolithic catalysts for conversion of sulfur dioxide to sulfur trioxide Chemically and thermally stable monolithic catalysts are disclosed having platinum or alkali metal-vanadium active phases for use in the conversion of sulfur dioxide to sulfur trioxide. The platinum catalyst comprises a foraminous ceramic support which ha... | 11/23/1993 |
| 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 |
| 5254513 | Method for the reactivation of spent alumina-supported hydrotreating catalysts Spent or inactive alumina-supported catalysts removed from a catalytic hydrotreating process and having carbonaceous and metallic deposits thereon are reactivated. After a solvent wash to remove process oils, the spent catalyst is contacted with steam at ... | 10/19/1993 |
| 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 |
| 5209840 | Separation of active catalyst particles from spent catalyst particles by air elutriation Spent hydrotreating catalyst having carbonaceous and metallic deposits and of regular geometric shape after being stripped of process oil is fluidized by flowing air upwardly through the catalyst at a velocity sufficient to expand the bed thereby segregat... | 05/11/1993 |
| 5192724 | Reactivation of spent cracking catalysts A spent metal contaminated zeolite-containing catalytic cracking catalyst composition is reactivated by a process which comprises contacting with (a) dissolved lactic acid and either (b1) at least one dissolved calcium compound or, alternatively, (b2) at ... | 03/09/1993 |
| 5188995 | Reactivation and passivation of spent cracking catalysts A spent metal-contaminated zeolite-containing catalytic cracking catalyst is reactivated by a process which comprises contacting the spent catalyst with at least one dissolved carboxylic acid and at least one antimony compound.... | 02/23/1993 |
| 5155073 | Demetallization of hydrocarbon conversion catalysts A demetallization process for catalysts used for chemical conversion of hydrocarbons, the catalysts containing at least vanadium as a metal poison, wherein the poisoned catalyst is contacted in a sulfiding zone with a sulfiding agent and a hydrocarbon hav... | 10/13/1992 |
| 5151391 | Reactivation of spent, metal-containing cracking catalysts A spent metal contaminated zeolite-containing catalytic cracking catalyst composition is reactivated by a process which comprises contacting with an aqueous solution of HC1 and/or HNO3 and/or H2 SO4. The thus reactivated c... | 09/29/1992 |
| 5141904 | Reactivation of spent cracking catalysts A spent metal contaminated zeolite-containing catalytic cracking catalyst composition is reactivated by a process which comprises contacting with an aqueous solution of at least one carboxylic acid (preferably at least one of formic acid, acetic acid, cit... | 08/25/1992 |
