Goal Line Environmental Technologies LLC

Emerachem, LLC

Gregory J Wagner

Larry E Campbell

Jerald Alan Cole

Eugene D Guth

William Shelbourne Epling

Steven De Cicco

Tom Girdlestone

Jerald A Cole

William S Epling

Thomas Girdlestone

Methods and systems for reducing emissions of particulate matter from a gaseous stream are provided. The subject systems include a catalyst that reduces the amount of particulate matter emissions in the gaseous stream. Embodiments of the subject systems may also reduce the amount of particulate matter precursor emissions in the gaseous stream. In some cases, the subject systems and methods include a sorber that facilitates the reduction in particulate matter and particulate matter precursors in the gaseous stream. The subject methods and systems find use in a variety of applications where it is desired to reduce particulate matter emissions from a gaseous stream.

Methods and systems for reducing particulate matter in a gaseous stream

A process for adjusting the ratio of sulfur dioxide to hydrogen disulfide from the regeneration of a catalytic system of a structured support for example a monolith coated with: (i) a metal oxide sorber component selected from the group consisting of Ti, Zr, Hf, Ce, Al, Si and mixtures thereof, for example Ti O, (ii) a precious metal component, for example Pt metal and, optionally (iii) a modifier consisting of an oxide Ag, Cu, Bi, Sb, Sn, As, In, Pb, Au or mixtures thereof, such as Cu as copper oxide. The system first captures the gaseous sulfur compounds. Then the captured gaseous sulfur compounds are then desorbed as mainly H S and SO, in higher concentrations in a separate isolated lower flow stream in a ratio determined by the amount of modifier in the catalyst. The higher concentrations may be processed to less noxious or useful sulfur materials and the catalyst/sorber is regenerated.

Process and catalyst/sorber for treating sulfur compound containing effluent

A system for treating the exhaust of an industrial process or combustion source to remove gaseous sulfur compounds which includes contacting the exhaust containing gaseous sulfur compounds with a catalytic system of a structured support for example a monolith coated with: (i) a metal oxide sorber component selected from the group consisting of Ti, Zr, Hf, Ce, Al, Si and mixtures thereof, for example TiO.sub.2 (ii) a precious metal component, for example Pt metal and optionally (iii) a modifier consisting of an oxide Ag, Cu, Bi, Sb, Sn, As, In, Pb, Au or mixtures thereof, such as Cu as a compound. The system captures the gaseous sulfur compounds. Gaseous sulfur compounds are then driven off as mainly H.sub.2 S and SO.sub.2 in higher concentrations in a separate isolated lower flow stream. The higher concentrations are easier to process to less noxious or useful sulfur materials and the catalyst/sorber is regenerated. The system also removes carbon monoxide by the oxidation of the carbon monoxide to carbon dioxide.

Catalyst/sorber for treating sulfur compound containing effluent

Hydrocarbon in a carrier of nitrogen or steam is passed over a devitalized supported noble metal/alkali or alkaline earth catalyst/absorber, such as Pt on an alumina monolith coated with potassium carbonate, which has sorbed NOx from engine exhaust to restore and regenerate the devitalized catalyst/absorber for reuse. The hydrocarbon undergoes a shift reaction to produce CO in situ which is the reactant gas for the regeneration.

Regeneration of catalyst/absorber

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Knoxville, TN, United States of America

Gregory J Wagner