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| Number | Title | Issue Date |
| 7144447 | Method and device for treating particulate material A process and apparatus for reducing material in particle form in a fluidization zone and at elevated temperature, in particular for reducing fine ore, the particle material being held in the fluidization zone by a treatment gas which flows upward from below. Materi... | 12/05/2006 |
| 6368389 | Method for separating vaporous phthalic acid anhydride from a gas stream Phthalic acid anhydride is recovered from a gas stream containing phthalic acid anhydride vapors by passing the gas stream upwardly through a vertical tube so that the gases expand at the orifice at the upper end of the tube and mix with granules entraine... | 04/09/2002 |
| 6051054 | Method for separating dust from hot process gases A method and apparatus for separating dust from hot process gases. The process gases are passed via a gas inlet duct through a dust separator, in which dust is separated from the process gases, part of the separated dust being conducted to a device for ag... | 04/18/2000 |
| 5855651 | Method for processing waste gas exhausted from chemical vapor and deposition equipment A method of processing waste gas exhausted from chemical vapor deposition equipment, which entails: a) contacting a waste gas containing viscous substances with a filtering aid agent, b) passing the waste gas containing the viscous substances exhausted from ... | 01/05/1999 |
| 5505766 | Method for removing pollutants from a combustor flue gas and system for same A method for removing pollutants from a combustor flue gas. The method includes the steps of supplying sorbent to a baghouse having a filter bag therein until the filter bag is coated with a predetermined amount of sorbent and introducing the flue gas int... | 04/09/1996 |
| 5468282 | Method for operating a filtration apparatus for flue gas A method for operating a filtration apparatus for flue gas, which removes dust from flue gas discharged from a burner using mainly solid fuel, wherein incombustible powder is introduced into the filtration apparatus upon detecting or foreseeing coming of ... | 11/21/1995 |
| 5279629 | Air handling apparatus and method for textile machines An air handling and filtering system is provided for with conventional textile machines. The apparatus includes a common vacuum system for drawing first and second independent airstreams through the textile machines. A filtering system operates with the v... | 01/18/1994 |
| 5022897 | Method for hazardous waste removal and neutralization A method of coating a filter medium in a flowing gaseous stream, the method comprising: directing a gas stream along a feed path; combining with said gas stream a multiplicity of finished glass dust particles; positioning a fibrous filter medium along sai... | 06/11/1991 |
| 4865629 | Control of particle size distribution in gas filtration A process for filtering fine particulates from a stream of hot gas wherein the particulates vary in size between about 0.15 and 250 microns includes the steps of removing a majority of the larger size particles from the gas stream, while leaving a majorit... | 09/12/1989 |
| 4842623 | Soot collector with fluid metering device A soot collector, e.g., for collection of soot from the exhaust gases of a diesel-powered internal combustion engine, having a fluid metering device which makes possible exact metering of a specified quantity of a soot remover by a controlled flow of comp... | 06/27/1989 |
| 4828435 | Dispersing particulate material in a stream of gas Equipment for dispersing particulate material in a stream of gas comprises a duct to contain the stream of gas, a bluff body mounted and extending transversely within the duct to create turbulence in the gas stream, and means for introducing particulate m... | 05/09/1989 |
| 4813978 | Process for separating particles and apparatus for carrying out the process In the separation of particles, these are heated together with a gaseous carrier medium. Constitutents of these particles thus vaporize, are cooled in a cooler (21) and condense out. An apparatus for carrying out this process comprises a fan (1) and a hea... | 03/21/1989 |
| 4728342 | Process for separating substances in the evaporated state from air and/or gas mixtures The present invention relates to a process for separating substances, such as solvents, polyaromatic hydrocarbons, sulphur dioxide (SO2) and/or nitrogen compounds (NOx), in the evaporated state from air and/or gas mixtures, by supply... | 03/01/1988 |
| 4650647 | Apparatus for removing acid constituents from waste-gas An apparatus for removing acid constituents such as HCl and/or SOx from the waste-gas generated by furnaces,incinerators and the like wherein the calcium-containing powder material is blown into a waste-gas duct to form a lean fluidized flow un... | 03/17/1987 |
| 4534778 | Installation for injecting a powdery material, particularly an adsorbent material, into a contact column The invention provides an installation for injecting a powdery material, particularly an adsorbent material, into a contact column--as a rule vertical--through which flows a stream of gas, more especially gas laden with polluting effluents which it is des... | 08/13/1985 |
| 4464184 | Apparatus and method for the control of the precoating of an effluent filtration baghouse utilizing clean side pressure measurement A method and apparatus for the control of the precoating process employed in an effluent filtration baghouse are described. An electrically operated pressure switch is provided to indicate the precoat duct vacuum pressure by measuring the vacuum pressure ... | 08/07/1984 |
| 4432776 | Process for filtering separators in dry chemisorption A process for cleaning filtering separators used in dry chemisorption systems. A maximum of 1-2% of the total filter area is in the cleaning process at any given time, to provide for utmost efficiency of the chemisorption activity. In the cleaning stage, ... | 02/21/1984 |
| 4378976 | Combined sonic agglomerator/cross flow filtration apparatus and process for solid particle and/or liquid droplet removal from gas streams A gas filtration apparatus and process is disclosed combining heating to maintain undesired material in the form of liquid droplets, sonic agglomeration and porous cross flow filtration. The apparatus and process are particularly suited to gas streams com... | 04/05/1983 |
| 4353720 | Contact compartment for removing noxious gaseous components from a gas stream A contact compartment for intermixing dust or fume laden gases with solid substances, in a turbulent or fluidized layer, the gases being the turbulence carrier, and the solid substances being the turbulence material. The intermixing action induces the nox... | 10/12/1982 |
| 4325711 | Method of conditioning flue gas and separating the particles therefrom The collection characteristics of particles entrained in a particle-laden gas for separation by the commonly used methods for removing particles from a gas stream are improved by injecting into the gas stream a conditioning agent comprising diammonium pho... | 04/20/1982 |
| 4319890 | Dry impact capture of aerosol particulates A dry method and apparatus for treating an effluent gas stream in order to facilitate the removal therefrom by conventional means of contaminating particulates, particularly those in the submicron range. Target particulates which are larger than the submi... | 03/16/1982 |
| 4319891 | Combined sonic agglomerator/cross flow gas filtration system and method A gas filtration apparatus and process combining sonic agglomeration with porous cross flow filtration. The apparatus and process is particularly suited to gas streams comprising particulates of under 10 microns in diameter, such as the effluent gas strea... | 03/16/1982 |
| 4290786 | Apparatus for removing particulate matter from a gas stream An apparatus for removing particulate matter from a gas stream includes a sorbent injector, a charging antenna, and a plurality of granular media filter cells. The gas stream containing the particulate matter is directed through an inlet plenum. The sorbe... | 09/22/1981 |
| 4273750 | Flue gas desulfurization apparatus and method A method of desulfurizing boiler flue gas by intimate contact thereof with dry particles of a reactant or absorbent, such as hydrated lime, preferably with recirculation of the flue gas and entrained reactant or absorbent particles. An apparatus suitable ... | 06/16/1981 |
| 4265707 | Method and apparatus for separating fission and activation products from gas atmospheres As a safety measure to reduce the content of fission and activation produ in the gas atmosphere contained within a nuclear reactor building after a so-called hypothetical malfunction, in a high-temperature gas-cooled reactor, the gas atmosphere within th... | 05/05/1981 |
| 4260399 | Method of removing tar mist and apparatus therefor In filtering a tar mist-containing gas to remove the tar, a filter bag having an inner surface and an outer surface is coated with a tar absorbent powder by feeding the powder into the top of the bag for free-fall therethrough while maintaining a slightly... | 04/07/1981 |
| 4243635 | Waste incinerator exhaust gas treatment and apparatus The disclosed treatment is for the removal of hydrogen halide constituents of an exhaust gas by means of a dry scrubbing agent to which the gas binds. The agent is sprayed into the gas in finely divided form just prior to flow of the gas through a registe... | 01/06/1981 |
| 4220476 | Cement kiln plants A method is disclosed for operating a cement kiln plant in which impurities in the form of alkalis are present in vapor form in the hot dust laden gases generated in the kiln. According to the method, a portion of the hot dust laden kiln gases are directe... | 09/02/1980 |
| 4215101 | Method and apparatus for performing chemical and/or physical treatments A method of performing a treatment of a dust cloud includes the successive steps of generating the dust cloud from a gas and from solid particles, passing the dust cloud through a reaction zone, separating the dust cloud into its components in a separator... | 07/29/1980 |
| 4176019 | Process and apparatus for treatment of waste gases In the scrubbing of gases containing sorbable contaminants, particularly the waste gases from reduction cells for electrolytic production of aluminium the waste gas is injected tangentially into the bottom of a cylindrical chamber, from which it is withdr... | 11/27/1979 |
| 4169714 | Removal of fine particles from a gas stream by solid particle addition in venturi contactor Fine particles contaminating a gas stream are removed from the gas stream by moving the gas stream at a velocity of between 50 and 500 feet per second; dispersing relatively larger solid collector particles in the gas stream to cause the collector particl... | 10/02/1979 |
| 4156599 | Filtering separators for cleaning gases A filtering separator for cleaning dust and smoke-particle-laden gases comprising a separator, a duct connected to the gas inlet of the separator and containing dust collector bodies around which the dirty gas flows, means for detaching particles which co... | 05/29/1979 |
| 4154585 | Fluidized bed particulate collectors A fluidized bed, particulate collector system wherein, in one embodiment, the bed particles have applied thereto at the surface thereof, an additive that serves to adhere particulate, once collected, to the bed particles. The bed particles and/or additive... | 05/15/1979 |
| 4147521 | Acid washed montmorillonite clays for improving electrostatic precipitation of dust particles A method for the electrostatic precipitation of dust particles entrained in a gas stream which comprises adding predetermined amounts of acid washed montmorillonite clays into the particle-laden gas stream in a location preceding the precipitation apparat... | 04/03/1979 |
| 4113447 | Method of conditioning flue gas The collection characteristics of particles entrained in a particle-laden gas for collection by an electrostatic precipitator are improved by injecting finely divided sodium bisulfate into a particle-laden gas stream formed by the burning of coal while th... | 09/12/1978 |
| 4097251 | Method of filtering a sticky material-containing exhaust gas Method of treating a sticky material-containing exhaust gas to remove the sticky material therefrom, by introducing pulverized coal or coke having a particle size of 0.3mm or less into the bottom of a hopper, which is positioned below, and integrally conn... | 06/27/1978 |
| 4070162 | Method of agglomerating particles in gas stream The separation characteristics of particles entrained in a particle-laden gas for separation by the commonly used methods for removing particles from a gas stream are improved by injecting finely divided urea into the gas stream prior to its passage throu... | 01/24/1978 |
| 4010013 | Equipment for treating waste gas containing tar mist Equipment for treating waste gas containing tar mist is constituted by bag houses having bag filters therein and in which a filter cleaning apparatus for each filter is installed, respectively, a conducting duct for waste gas containing tar mist connected... | 03/01/1977 |
| 3995005 | Treatment of flue gases containing boron compounds A process is disclosed for the treatment of flue gases to remove acid gases, boron compounds and particulates.... | 11/30/1976 |
| 3969482 | Abatement of high concentrations of acid gas emissions A process is disclosed for the large-scale abatement of acid gases in hot industrial effluent gas streams. In a first stage, the proportion of acid gases in a hot gas stream containing a relatively high initial concentration of acid gases is substantially... | 07/13/1976 |
