Abstract: An exhaust gas purifying catalyst comprises a catalytic ingredient including rhodium, at least one of platinum and palladium, at least one of absorption materials for absorbing NOx, a porous carrier, and a monolithic support for supporting the catalytic ingredient. The exhaust gas purifying catalyst includes a plurality of catalytic layers containing at least a part of the catalytic ingredient, and rhodium is contained at least in an outermost layer of the catalytic layers. A rhodium amount in the catalytic ingredient is 0.5 g or more for each liter of the catalyst, and a rhodium amount contained in the outermost layer accounts for 80 wt % or more of a total rhodium amount. A weight of the catalytic layer at the outermost layer is 40 wt % or below of a total weight of the catalytic layers.

Abstract: An improved system for treating the aftertreatment of exhaust gases, especially from diesel engines, comprises a first catalyst (20) effective to oxidise hydrocarbons, a second catalyst (22) effective to convert NO to NO2, a trap (24) for particulates, on which particulates may combust with the NO2, and optionally a NOx absorption material (26).

Abstract: The present invention provides a system for removing mercury in exhaust gas, in which mercury is removed from exhaust gas of a boiler, characterized in that between a denitrification apparatus and a wet type desulfurization apparatus, an NH3 decomposition catalyst and a mercury oxidation catalyst are provided, and mercury having been oxidized into mercury chloride is removed by the wet type desulfurization apparatus. Also, it provides a method for removing mercury in exhaust gas, characterized in that the mercury removing method includes an NH3 decomposition process and a mercury oxidation process, which are provided between the denitrification process and a wet desulfurization process, and mercury having been oxidized into mercury chloride is removed in the wet desulfurization process.

Abstract: For carrying out a heterogeneously catalyzed reaction, such as the generation of hydrogen from hydrocarbons or alcohol, a reaction mixture comprising a hydrocarbon and water is supplied to a catalyst, which is produced by pressing at least one catalyst powder into a layer. Instead of a metallic housing, stacked layers are sealed by an edge seal, introduced into the layer or applied on the layer.

Abstract: A gas cleaning system for removing at least a portion of contaminants, such as halides, sulfur, particulates, mercury, and others, from a synthesis gas (syngas). The gas cleaning system may include one or more filter vessels coupled in series for removing halides, particulates, and sulfur from the syngas. The gas cleaning system may be operated by receiving gas at a first temperature and pressure and dropping the temperature of the syngas as the gas flows through the system. The gas cleaning system may be used for an application requiring clean syngas, such as, but not limited to, fuel cell power generation, IGCC power generation, and chemical synthesis.

Abstract: An oxygen-containing blowing device for use in a wet flue gas desulfurizer for removing SO2 from combustion exhaust gas by wet desulfurization includes a fluid reservoir for an absorbing fluid equipped with a delivery pipe for discharging the absorbing fluid so that its discharge end is open in said fluid reservoir, and an oxygen feed nozzle for injecting an oxygen-containing gas disposed in the area of the discharged stream in the discharge end of the delivery pipe.

Abstract: An apparatus and process for removing acidic gases and NOx from flue gases produced by utility and industrial plants. The process and apparatus convert NOx, and particularly nitric oxide, to nitrogen dioxide, which is then reacted to form a valuable byproduct. The process generally entails contacting a flue gas with a scrubbing medium to absorb acidic gases from flue gas and produce an intermediate flue gas. The intermediate flue gas is then cooled to cause nitric oxide present therein to be oxidized to form nitrogen dioxide, which is then absorbed from the flue gases to produce a nitrogen dioxide-containing solution and a scrubbed flue gas. The nitrogen dioxide in the nitrogen dioxide-containing solution is then reacted with ammonium hydroxide to form ammonium nitrate as a valuable byproduct.

Abstract: An abatement system and method for the abatement of contaminants of effluent gases produced during the manufacture of semiconductor devices. A burn/wet scrubber is provided at the device fabrication site where toxic effluent gases are produced. The burn/wet scrubber oxidizes and condenses toxic compounds. Wastewater used to condense oxidized toxic gases is treated locally in an ion exchange filter. The treated wastewater is then directed to a centralized wastewater treatment facility.

Abstract: A sorbent addition system for a steam generator system having a boiler, an air preheater, a scrubber, an air duct providing fluid communication between the air preheater and the boiler, a first flue gas duct providing fluid communication between the boiler and the air preheater, and a second flue gas duct providing fluid communication between the air preheater and the scrubber. The sorbent addition system comprises a calciner having a calciner exhaust which provides fluid communication with either the first or second flue gas ducts. A limestone addition subsystem and a fuel addition subsystem are in fluid communication with the calciner.

Abstract: The desulfurization reactor assembly is comprised of two sections. The first section comprises a plenum base having channels therein for inflow and outflow of vapor to be reacted with the channels traversing a chamber within the plenum base through which heating medium travels. The second section includes two pieces comprising a shell engageable to the plenum base within which is seated a self-sealing sorbent vessel having channels for receiving vapor inflow from and providing reacted vapor outflow to the respective channels of the plenum base, with the canister shell providing a continuation for passage of heating medium from the plenum base therethrough. The assembly is structured to produce sealing of the vapor channels in the sorbent vessel when the vessel is removed from engagement with the plenum base.

Abstract: A wet type exhaust gas desulfurization apparatus includes a liquid reservoir which reserves absorption liquid containing absorbent and sulfite, a desulfurizing system which removes sulphur dioxide from combustion exhaust gas and forms sulfite, and an air supplying and circulating device which has a reduction section and supplies air to said liquid reservoir using a negative pressure generated due to said reduction section to oxidize the sulfite.

Abstract: A gas scrubber with an automatic disassembling device in accordance with the present invention comprises a burning chamber to treat the gas with heat, a wetting chamber connected to the burning chamber for removing water soluble components contained in the gas flowing in from the burning chamber, an outlet which exhausts gas that has been treated, and a housing that contains both the burning chamber and the wetting chamber, wherein said wetting chamber slides out of the housing along guide rails placed at the bottom side edges of the wetting chamber. The bottom back edge of the burning chamber is connected to the top back edge of the wetting chamber with a hinge and a pivot member is placed on both sides of the burning chamber so that when the wetting chamber slides out along the guide rail to the outside to the housing, the burning chamber rotates about 90 degrees in the inside of the housing.

Abstract: A multichemistry measuring device and diagnostic test strips which, in combination with the multichemistry measuring device, provide a multichemistry testing system are disclosed. The test strips are for chemical analysis of a sample, and are adapted for use in combination with a measuring device having a test port and capable of performing a multiplicity of testing functionalities. Each type of test strip corresponds to at least one of the testing functionalities, and at least some types of test strips have indicators of the testing functionality on them. The test port is adapted for use in combination with a multiplicity of different types of test strips and includes a sensor capable of specifically interacting with the indicator(s) on the test strips, thereby selecting at least one of the multiplicity of testing functionalities corresponding to the type of test strip.

Abstract: A system for generating a molecular halogen gas using gas generation modules can provide a flexible platform for scaling to meet increasing demands within a facility. During normal operation, the system may be designed to have one gas generation module in standby mode while the others are in active mode. Adding or removing gas generation cells is relatively straightforward and does not require redesigning the system. The system can be designed with a level of redundancy that best fits the user's needs to allow for continuous uninterruptible operations. The system can be safer to use compared to other systems due to any one or more of electrolytic cell-rectifier pairs, individually exhausted cabinets, organization fluid flow paths and pressures, and the like.

Abstract: The membrane reactor of the present invention generates a desired gas such as hydrogen produced by steam reforming liquid fuels. The membrane reactor provides thermal integration between the heating source and the reaction catalyst by heat conduction through a solid medium. A gas purification system extracts energy from the waste gases to heat the membrane reactor.

Abstract: System for removal of targeted pollutants, such as oxides of sulfur, oxides of nitrogen, mercury compounds and ash, from combustion and other industrial process gases and processes utilizing the system. Metal oxides, such as oxides of manganese, are utilized as the primary sorbent in the system for removal or capture of pollutants. The metal oxides are introduced from feeders into reaction zones of the system where they are contacted with a gas from which pollutants are to be removed. With respect to pollutant removal, the sorbent may interact with a pollutant as a catalyst, reactant, adsorbent or absorbent. Removal may occur in single-stage, dual-stage, or multi-stage systems with a variety of different configurations and reaction zones, e.g., bag house, cyclones, fluidized beds, and the like. Process parameters, particularly system differential pressure, are controlled by electronic controls to maintain minimal system differential pressure, and to monitor and adjust pollutant removal efficiencies.

Abstract: A diverter (60) is provided, which is of low cost and which is effective in more evenly distributing exhaust gasses passing from a small diameter upstream exhaust gas pipe section (42) into a much larger diameter catalytic converter assembly (20). The diverter includes a diverter element (70) and mounting brackets (72). The diverter element has a central hole (82) and has conical walls with an included angle of at least 70°, the conical walls having a plurality of holes (90). The large conical angle (G) of the diverter effectively directs exhaust gases to the periphery of the large diameter catalytic converter but blocks a radially intermediate portion of the catalyst, while the holes in the conical diverter walls allow sufficient exhaust gases to reach the radially intermediate portion of the catalyst.

Abstract: A purifier of a noxious gas is provided with structure for supplying a gas containing a noxious gas component, a buffer using a liquid which dissolves the noxious gas component in the supplied gas temporarily and later releases the dissolved noxious gas component, and structure for purifying the noxious gas component in the gas supplied from the buffer means. The liquid in the buffer dissolves the noxious gas component when the concentration of the noxious gas component in the supplied gas is high and releases the noxious gas component dissolved thus far when the concentration is low. When the noxious gas is ethylene oxide, water is used as the liquid.

Abstract: The device is a component of a system for posttreatment of the exhaust gas of a self-igniting internal combustion engine; by means of the mixture of reducing agent and air that it generates, the action of a reduction catalytic converter is improved. The device has a mixing chamber (22), into which reducing agent, via a reducing agent supply means controlled by a metering valve (24), and air, via an air supply means, can be introduced. The mixing chamber (22) is embodied in a mixing chamber body (20), with which a valve body (26) of the metering valve (24) is connected. The mixing chamber (22) discharges, toward the metering valve (24), into a connection stub (42), and the metering valve (24) has a valve member (74), which to control the reducing-agent/air mixture supply means into the mixing chamber (22) cooperates at least indirectly with the face end (43) of the connection stub (42) as a valve seat. The valve body (26) is screwed into a bore (38) of the mixing chamber body (20).

Abstract: An exhaust gas purifying system, at least including, on an exhaust gas passage for gas exhausted from an engine, a first HC-trap-catalyst arranged on an upstream side, a second HC-trap-catalyst arranged on a downstream side, and a heat capacitor arranged between the first HC-trap-catalyst and the second HC-trap-catalyst. Each of the heat capacitor and the second HC-trap-catalyst has a honeycomb carrier, and a ratio Gt/Gh2 of a geometric surface area Gt of the honeycomb carrier of the heat capacitor to a geometric surface area Gh2 of the honeycomb carrier of the second HC-trap-catalyst is in a range of 1 to 5.

Abstract: A flue gas purification system comprising in the flue gas stream an electrostatic precipitator, mercury sorbent injection and a two-stage electrostatic separator, and wherein the mercury sorbent injection is positioned between the electrostatic precipitator and the two-stage electrostatic separator.

Abstract: An object of the present invention is to improve the decomposition at low temperatures of perfluorocompounds containing only fluorine as a halogen, such as CF4, C2F6 and the like. In the present invention, a perfluorocompound containing only fluorine as a halogen is brought into contact with a catalyst comprising Al, Ni and W as catalytically active ingredients and comprising a mixed oxide or complex oxide of Ni and Al and a mixed oxide or complex oxide of W and Ni, in the presence of steam or a combination of steam and air at a temperature of 500 to 800° C. to convert the fluorine in the perfluorocompound to hydrogen fluoride. Employment of the catalyst of the present invention improves the decomposition at low temperatures and hence makes it possible to decompose the perfluoro-compound at a high percentage of decomposition at a lower temperature.

Abstract: Device for purifying a mercury-containing flue gas, at least comprising dust removing means for removing dust from a flue gas, and a quantity of a regenerable amalgamable material for removing mercury from a flue gas, which device is adapted for removal therefrom in amalgamated state of the quantity of amalgamable material for the purpose of regenerating this material, wherein the material is provided in a manner such that it can be regenerated in amalgamated state outside the device.

Abstract: An open loop system for ambient air pollution processing by motor vehicles utilizing controlled volumes of air flow over exhaust system surface.

Abstract: Methods for removing sulfur from syngas in a Fischer-Tropsch reactor, and reactors including means for removing sulfur from syngas are disclosed. Sulfur-reactive metals can be used in the Fischer-Tropsch unit to sequester the sulfur. For example, the Fischer-Tropsch unit can be run in stages, using a sacrificial catalyst in a first stage to adsorb the sulfur. The Fischer-Tropsch reactor can include internal baffles that separate the reactor into zones, with a sacrificial catalyst in one or more of the zones, that can be easily sequestered and regenerated or replaced. Sulfur adsorbents can be placed in the inlet gas manifold. A portion of the Fischer-Tropsch catalyst can be converted into larger size pellets that do not fluidize with the finer grain Fischer-Tropsch catalyst and remain near the gas inlet where they adsorb and sequester the sulfur. These embodiments can be combined in any suitable manner to lower the sulfur concentration in the syngas feed.

Abstract: A filter body for cleaning exhaust gases from an internal combustion engine includes at least one filter layer and at least one foil, which are disposed in such a way that channels through which the exhaust gas can flow are formed. The foil is provided with a structure which has a structure height as well as elevations and depressions that extend at least partially in an axial direction. The foil also has a plurality of vanes which have a vane height and in each case form a passage having a vane inlet and a vane outlet. The vane inlet and the vane outlet are disposed at an angle to one another. The filter body is distinguished by the fact that the vane height is between 100% and 60% of the structure height, with a freedom of flow of at least 20% being ensured.

Abstract: A canister (1) contains a catalyst for generating NO2 and a filter (8) for trapping PM, e.g. from diesel engines. The filter is thermally isolated from the canister, and preferably is surrounded by an annular monolith comprising the NO oxidation catalyst or a SCR catalyst. The invention facilitates the combustion of PM even at low exhaust gas temperatures, in a compact device.

Abstract: Each of vertical frame members which constitute a frame body of a high-temperature denitration apparatus and which are erected in a spaced-apart relationship in a direction of exhaust gas flow is provided by a pillar member. The pillar member is an integral combination of a web with upstream and downstream flanges so as to improve thermal conductivity of the same. The web of the pillar member is formed with openings for suppression of thermal capacity to a minimum so as to reduce in weight the web and enhance a temperature rising velocity of the web.

Abstract: The present invention provides a method for the treatment of mercury present in exhaust gas wherein, after a chlorinating agent is added to exhaust gas containing nitrogen oxides, sulfur oxides and mercury, the exhaust gas is subjected to a reductive denitration treatment in the presence of a solid catalyst and then to wet desulfurization using an alkaline absorbing fluid, the method being characterized by measuring the mercury concentration in the exhaust gas after the wet desulfurization; calculating a predicted value of the inlet mercury concentration before the reductive denitration treatment on the basis of the measured mercury concentration; and controlling the feed rate of the chlorinating agent added prior to the reductive denitration treatment, according to the deviation of the predicted value from a reference inlet mercury concentration, as well as a system for the treatment of exhaust gas.

Abstract: A method comprises providing a first gas stream containing a first concentration of sulfur dioxide; passing the first gas stream through at least a first catalyst volume whereby at least a portion of the sulfur dioxide is reacted to produce sulfur trioxide and removing from the at least a first catalyst volume a first treated gas stream containing sulfur trioxide and unreacted sulfur dioxide wherein the reaction of sulfur dioxide to sulfur trioxide is not limited by catalyst volume; providing a second gas stream containing a second and higher concentration of sulfur dioxide; and, passing the first treated gas stream and the second gas stream through at least at least a second catalyst volume to produce a second treated gas stream containing sulfur trioxide and unreacted sulfur dioxide.

Abstract: The invention relates to systems and processes for treating particulate oxides of manganese useful as oxidizing sorbents for capturing or removing target pollutants from industrial gas streams, including, but not limited to, nitrogen oxides (NOx), sulfur oxide (SOx), mercury (Hg), hydrogen sulfide (H2S), other totally reduced sulfides (TRS), and oxides of carbon (CO and CO2) gases. Oxides of manganese are washed an aqueous oxidizing solution, which may be adjusted as necessary to maintain the oxidizing solution a desired range of pH (acidity) and Eh (oxidizing potential) within the MnO2 stability area for aqueous solutions. The resulting treated oxides of manganese are equally or more efficient as sorbents as the oxides of manganese processed with the invention.

Abstract: An apparatus and method for wet pre-treatment of an effluent gas derived from upstream semiconductor or LCD manufacturing tools before the effluent gas is processed in an effluent gas treatment system in provided. The apparatus comprises an atomizing spray nozzle for atomizing a reagent and a processing section in which the effluent gas in pre-treated with the atomized reagent using a cyclone method. The processing section comprises an inner tubular portion and an outer tubular portion. The processing section has an effluent gas inlet, a reagent inlet, an effluent gas outlet, and a waste liquid outlet. An apparatus is also provided which includes a plurality of wet pre-treatment units, each of which pre-treat each of effluent gas streams derived from a plurality of CVD chambers.

Abstract: Exhaust gas clean-up catalysts that contain one or two or more noble metals chosen from the group platinum (Pt), rhodium (Rh), ruthenium (Ru), Iridium (Ir), osmium (Os) and other noble metals, and at least one of tungsten (W) metal or tungsten oxide and, optionally, at least one of niobium (Nb) metal, niobium oxide, molybdenum (Mo) metal, or molybdenum oxide, and which can also contain the metal oxide(s) ceria and/or zirconia if necessary, are especially useful for cleaning up hydrocarbons in exhaust gases.

Abstract: A catalytic converter (9) is interposed in an exhaust passage (3) of an internal combustion engine (1). In the converter (9), a plurality of carriers (21A-21D) are disposed in series with gaps (G1-G3). Each carrier (21A-21D) comprises a hydrocarbon trapping layer (25), a three-way catalyst layer (26) and a number of passages (24) facing the three-way catalyst layer (26). The gaps (G1-G3) interrupts heat transfer between the carriers in order to retard temperature increase in the hydrocarbon trapping layer (25) and promotes a turbulence in exhaust gas flow in the converter (9) in order to homogenize the exhaust gas dispersion in a radial direction, thereby enhancing the hydrocarbon purification performance of the converter (9).

Abstract: A hydrocarbon trapping layer (25) is formed by coating a hydrocarbon trapping material onto a carrier (21A). A number of exhaust gas passages (34) are formed in the carrier (21A) and a plurality of slits (22) are formed on the carrier (21A) to cross the passages (24) in a transverse orientation. The slits (22) delay temperature increases in the downstream hydrocarbon trapping layer (25) and delay the release of trapped hydrocarbons therefrom. This is due to blocking the transmission of heat to the downstream hydrocarbon trapping layer (25) from the upstream hydrocarbon trapping layer (25). The slits (22) further produce a turbulent flow in the flow of exhaust gas and promote diffusion of exhaust gas over the entire surface of the carrier (21A).

Abstract: Nitrogen oxides contained in an exhaust gas emitted from a lean-burn engine-mounted internal combustion engines are eliminated with a high efficiency.

Abstract: The present invention provides a desulfurization apparatus 10 for desulfurizing a flue gas 13 containing sulfur oxides through contact with a porous carbon material 11. The carbon material 11, which is provided in a desulfurization tower 12, is at least one species selected from activated carbon and activated carbon fiber. The apparatus 10 contains an NO2-gas-feeding apparatus 14 for feeding NO2 gas into the desulfurization tower 12. Within the desulfurization tower 12, showering means 15 is provided at the top, the showering means adjusting the water content of the flue gas in the desulfurization tower to that corresponding to saturation with water vapor or higher at the treatment temperature.

Abstract: An apparatus for treating waste gas from semiconductor manufacturing process includes a decomposition chamber having an inner wall and having a heater therein, a cleansing chamber and a waste water treating device; the inner wall of the decomposition chamber being mounted with a temperature sensor for servo control of the heater to operate at a constant temperature, and an aluminum foil layer to reflect heat to shorten decomposition time, the bottom end of the decomposition chamber being mounted with a detachable dust collector; the top section of the cleansing chamber being provided with a plurality of short metallic tubes to allow condensation of residual moisture of the discharged gas on the wall of the short metallic tubes, and the waste water treating device included a G-shaped tank mounted with a slurry removing device comprising a conveyor, a driving shaft, a driven shaft, a combing roller, a scrape board, and a speed-reducing motor, thereby precipitated slurries at the bottom of a storage tank is disc

Abstract: A method and apparatus for removing nitrogen oxides from internal combustion engine exhaust emissions consisting of the operations of contacting the exhaust emissions with a non-thermal plasma (1) and a silver doped alumina catalyst (2) and then an indium-doped zeolite catalyst (3).

Abstract: A reactor (8) for treating an exhaust gas comprises at least one first zone (16, 18) and a second zone (20) downstream of the or each first zone, the or each first zone and optionally the second zone including a chemically active coating or a catalytically active coating.

Abstract: System for removal of targeted pollutants, such as oxides of sulfur, oxides of nitrogen, mercury compounds and ash, from combustion and other industrial process gases and processes utilizing the system. Oxides of manganese are utilized as the primary sorbent in the system for removal or capture of pollutants. The oxides of manganese are introduced from feeders into reaction zones of the system where they are contacted with a gas from which pollutants are to be removed. With respect to pollutant removal, the sorbent may interact with a pollutant as a catalyst, reactant, adsorbent or absorbent. Removal may occur in single-stage, dual-stage, or multi-stage systems with a variety of different configurations and reaction zones, e.g., bag house, cyclones, fluidized beds, and the like. Process parameters, particularly system differential pressure, are controlled by electronic controls to maintain minimal system differential pressure, and to monitor and adjust pollutant removal efficiencies.

Abstract: System for removal of targeted pollutants, such as oxides of sulfur, oxides of nitrogen, mercury compounds and ash, from combustion and other industrial process gases and processes utilizing the system. Oxides of manganese are utilized as the primary sorbent in the system for removal or capture of pollutants. The oxides of manganese are introduced from feeders into reaction zones of the system where they are contacted with a gas from which pollutants are to be removed. With respect to pollutant removal, the sorbent may interact with a pollutant as a catalyst, reactant, adsorbent or absorbent. Removal may occur in single-stage, dual-stage, or multi-stage systems with a variety of different configurations and reaction zones, e.g., bag house, cyclones, fluidized beds, and the like. Process parameters, particularly system differential pressure, are controlled by electronic controls to maintain minimal system differential pressure, and to monitor and adjust pollutant removal efficiencies.

Abstract: A waste gases-neutralizing device comprises a filter installation with at least one filter unit (11, 12, 13) with an inlet (2) and an outlet (3) between which a filter (5) is received to remove undesired components form the waste gases. The installation has a modular construction and comprises a number of filter units which are placed in series in a flow path of the waste gases and/or a reactor vessel provided with a nozzle (50) with mixing chamber in which waste gases are at least partially removed with a mixture of at least one neutralizing compound and oxygen under pressure. The filter units each comprise a filter adapted to a specific component or group of components to be removed from the waste gases. The waste gases-neutralizing device preferably also comprises, in addition to the filter installation, a neutralizing unit 21 comprising a neutralizing liquid bath or a fixed connection impregnated with a neutralizing liquid. The waste gases-neutralizing device preferably also comprises a UV generator.

Abstract: The present invention has an object thereof to make possible the recycling of exhaust gas components in a manufacturing process by cooling, liquefaction, and recovery, and to use toxic or useful gases without disposal, and to dramatically reduce the frequency of exhaust system maintenance by combining such a recovery method with a vacuum exhaust system.

Abstract: A system for recovering absorbate such as carbon dioxide from an oxygen containing mixture wherein carbon dioxide is concentrated in an alkanolamine containing absorption fluid, oxygen is separated from the absorption fluid, the resulting fluid is heated, and carbon dioxide is steam stripped from the absorption fluid and recovered.

Abstract: Systems and process for wet and combinations of wet and dry removal of targeted pollutants, such as oxides of sulfur, oxides of nitrogen, and oxides of carbon from combustion and other industrial process gases and processes utilizing the system. Oxides of manganese are utilized as the primary sorbent in the system for removal or capture of pollutants. In wet removal, oxides of manganese are mixed in a slurry which is introduced into reaction zones of the system. In dry removal, the oxides of manganese are introduced from feeders into reaction zones of the system where they are contacted with a gas from which pollutants are to be removed. Removal may occur in single-stage, dual-stage, or multi-stage systems with at least one of the reaction zones being a wet scrubber. A variety dry scrubber may be utilized in combination wet and dry removal systems.

Abstract: System for removal of targeted pollutants, such as oxides of sulfur, oxides of nitrogen, mercury compounds and ash, from combustion and other industrial process gases and processes utilizing the system. Oxides of manganese are utilized as the primary sorbent in the system for removal or capture of pollutants. The oxides of manganese are introduced from feeders into reaction zones of the system where they are contacted with a gas from which pollutants are to be removed. With respect to pollutant removal, the sorbent may interact with a pollutant as a catalyst, reactant, adsorbent or absorbent. Removal may occur in single-stage, dual-stage, or multi-stage systems with a variety of different configurations and reaction zones, e.g., bag house, cyclones, fluidized beds, and the like. Process parameters, particularly system differential pressure, are controlled by electronic controls to maintain minimal system differential pressure, and to monitor and adjust pollutant removal efficiencies.

Abstract: A process and apparatus for removing SO2 from a gas stream having the steps of scrubbing the SO2 with an ammonia scrubbing solution and removing any aerosols generated by the scrubbing in a wet electrostatic precipitator. Ammonium sulfate, a valuable fertilizer, can be withdrawn from the scrubbing solution.

Abstract: The present invention includes methods and apparatus useful in the removal of air pollutants. More specifically, this invention relates to methods and apparatus useful in mitigating major air pollutants (SOx and NOx) and trace toxins from coal-fired combustors. Using a method or apparatus of the present invention, a coal-fired combustor may be retrofitted to accommodate combined SOx/NOx removal technology for solid waste reduction and environmentally responsible utilization of dry flue gas (FGD) desulfurization product. The combined SOx/NOx control technology may integrate enhanced removal of SO2 at high to medium temperatures using a desulfurization process of the present invention with selective catalytic reduction technology for NOx. The reactivation of spent sorbent and dry FGD product may result in a more complete utilization of the ash and sorbent in the reduction of SO2 emissions, thereby reducing significantly the amount of sorbent used and the volume of by-product generated.

Abstract: A rolling regeneration diesel particulate filter and filtering process that utilizes NO produced in the process to generate additional amounts of NO2 than the NO2 produced by the diesel engine. The process includes the step of flowing diesel engine combustion exhaust through a filter system including a first section and a second section. The first section is positioned upstream of the second section with respect to the direction of the flow of the diesel engine exhaust through the filter. The first section includes a foam constructed and arranged to trap carbon-based particulates in the exhaust. A first catalyst is carried by the foam to promote the conversion of NO in the exhaust from the diesel engine to NO2. The first catalyst also promotes the reaction of NO2 with at least a portion of the carbon-based particulates trapped by the foam to form CO and NO.