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WO/1999/012649 |
In a method for use in an electrostatic precipitator unit, comprising discharge electrodes and collecting electrodes between which a varying high voltage is maintained, to control a pulsating direct current supplied to the electrodes, th...
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WO/1999/010273 |
A deodorizing/sterilizing device having a cylindrical electrode formed of a sintered metal which mainly contains titanium oxide and can be easily machined by rolling and cutting and a needle-like electrode located generally on the center...
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WO/1999/010103 |
A device and method for controlling particulate air pollutants of the present invention combines filtration and electrostatic collection devices. The invention includes a chamber housing a plurality of rows of filter elements (24). Betwe...
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WO/1999/007475 |
An apparatus (10) for charging an electrostatic precipitator (12), powered by a power supply (18) and having a plurality of corona electrodes (14) and a plurality of collector electrodes (16), such that a precipitator capacitance (Cp) ma...
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WO/1999/007474 |
Device for cleaning air from charged particles (aerosols) in an air flow duct including one or several precipitator panels (11; 11') comprising one or more precipitator units that are arranged in such a way that their inlet area, perviou...
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WO/1999/003590 |
Filter apparatus (100) for trapping particles suspended in a gaseous fluid stream generally includes a first and a second electrode (116, 118) with a porous filter (112) therebetween along with electrical contacts (144, 146) for applying...
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WO/1999/002241 |
The invention relates to a flue gas conditioning device (1) comprising an inlet (2), a diffuser (3) in extension of the inlet, and an essentially cylindrical pipe area (4) in extension of the diffuser, said pipe area being equipped with ...
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WO/1999/001224 |
Filter plates (2) in an electro-filter can with advantage be cleaned of fly ash by a method according to the invention comprising cleaning water via nozzles (5) which, during the spraying, are displaced (11) longitudinally with the side ...
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WO/1998/058744 |
An electric precipitator in which a plurality of discharge poles are divided into groups and arranged at each of gas flow passages divided by a plurality of electric precipitation electrodes (11-15). The discharge electrodes in each grou...
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WO/1998/058743 |
The invention comprises an electrostatic precipitator capable of separating sub-micron size particulate matter from a gaseous stream. In a preferred embodiment, alternating high voltage plates and ground collector plates are placed in a ...
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WO/1998/057750 |
An electrostatic dust filter comprises plane, rectangular metal frames (1) where said metal frames are provided with discharge electrodes (16) stretched therein and collecting plates (18) mounted in the spaces between and on the outer si...
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WO/1998/056489 |
The invention relates to an ionisation filter for purifying air that is enriched with dust particles and other anorganic and organic pollutants. The filter has at least one electrically charged emission electrode for producing electrical...
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WO/1998/053915 |
The present invention relates to a filter for separating particles from air, more precisely down to submicron particles, said filter comprising on one hand a set (10; 10'; 10''; 10''') of elongated, flexible or floppy elements of electro...
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WO/1998/053914 |
A filter for separating particles from air comprises a set of elongated, flexible elements (6) of electrostatically chargeable material, said filter being intended to operate in a duct (3) through which flowing air is passing in order to...
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WO/1998/050162 |
The present invention relates to a method for cleaning of a gaseous fluid from particles being present in said fluid, said gaseous fluid being ionised, i.e. the particles are subjected to a charging, and that said ionised gaseous fluid i...
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WO/1998/046359 |
The invention relates to a method for cleaning waste process gases containing water vapour and dust, in a wet-type electrostatic filter. According to this method, the gases which pass through said wet-type electrostatic filter are charge...
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WO/1998/046358 |
The present invention relates to a device in connection with a filter, especially an active electret filter for air cleaning, said filter comprising an ionisation portion (10; 10'), said portion (10; 10') having a high voltage source at ...
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WO/1998/046360 |
The invention relates to an electrostatic filter, especially a wet-type electrostatic filter, for separating liquids and/or solids from gases, with collecting electrodes which are tubular in shape and are interconnected electroconductive...
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WO/1998/043525 |
The invention concerns an electrical general dust collection system which, in order to agglomerate and capture the particles with high efficiency, uses for the initial agglomeration of particles in the admission duct into the cyclone and...
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WO/1998/042444 |
In an electrostatic precipitator unit, comprising discharge electrodes and collecting electrodes between which a varying high voltage is maintained, a pulsating direct current supplied thereto is controlled. The frequency, the pulse heig...
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WO/1998/039100 |
The present invention relates to a device (1; 1''; 1'''; 1''''; 1''''') for air cleaning, especially from electrically charged particles, said device (1; 1'; 1''; 1'''; 1''''; 1''''') including an air flow channel (2; 2'; 2''; 2'''; 2'''...
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WO/1998/039082 |
A process is disclosed for eliminating pollutants from combustion gas from waste incineration plants and power plants. The combustion gas is treated with an aqueous Ca(OH)�2? suspension in a spray absorber, then supplied to a solid sep...
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WO/1998/037973 |
An electrostatic precipitator comprising an exhaust pipe (4) formed by covering the inner surface of a steel pipe (14) with a refractory (15), a support member (5) fitted into the exhaust pipe (4) while being electrically insulated from ...
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WO/1998/033596 |
An ionizer (12) for electrification of particles in the air, a collector (13) for trapping charged particles, an ozone decomposition filter (14) for decomposition of ozone generated on the ionizer (12), and a fan (15) for feeding the air...
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WO/1998/025690 |
The invention concerns a method of reducing the concentration of PCDD and PCDF (polychlorinated dibenzodioxins and polychlorinated dibenzofurans) in the flow of waste gases from a sintering plant, in particular an iron-ore sintering plan...
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WO/1998/024552 |
Disclosed is an improved filter formed from a non-dielectric material which has been coated with a dielectric material and electret treated by, for example, DC corona discharge treatment. Also disclosed is a method for the formation of t...
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WO/1998/022223 |
To homogenize the electric field in the filter channel, that is defined by two precipitation electrodes (1), of a filter structure for the separation of dustlike or drop-shaped impurities from a flow of gas, corona electrodes (3) are use...
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WO/1998/022222 |
The invention relates to a device in connection with an electrostatic filter for air purifying, said filter including an ionizing portion (1) and a precipitating portion (2). The precipitating portion (2) consists of a unit (10) that is ...
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WO/1998/020979 |
An air filter assembly includes an ion source (38) positioned adjacent to the front face of an air filter to inject ions into the arriving air flow. The ions penetrate upstream sufficiently far to have ionized the air and charge particle...
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WO/1998/020978 |
A high efficiency electronic air filter is based on a fibrous pad of dielectric fibres which is sandwiched between an electrically charged, ionizing grid and a grounded screen. The ionizing grid charges the dust particles passing through...
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WO/1998/019775 |
The invention relates to a method and a device for cleaning air masses even those with small amounts of contamination e.g. in tunnels, roads through gorges, road constructions and premises. The inventive method for cleaning heavily and s...
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WO/1998/015357 |
A process and apparatus for reducing particulate, nitrogen oxides ('NOx'), sulfur dioxide ('SO�2?'), and mercury ('Hg') emissions from the combustion exhaust of fossil fuel fired plants while producing an end product that is commercial...
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WO/1998/013141 |
Improved ionizing structure (10) for ambient air treatment wherein the structure (10) incorporates an ionizing needle (29) directed in the direction of airflow; the needle (29) is negatively charged to produce an electrostatic field, pre...
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WO/1998/011992 |
Apparatus and method for agglomerating fine particles in a gas stream. Larger particles are introduced into the apparatus and imparted with an electrical charge opposite in polarity to the charge imparted to the fine particles to be aggl...
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WO/1998/010868 |
The invention relates to a device in connection with an electrostatic precipitator (1) for cleaning a gaseous medium from particles that are present in said medium, said device including an ionizing portion (2), separating portion (4), e...
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WO/1998/004354 |
A clog-resistant filter (24) for extracting fine particulate contaminants, such as smoke, from a gaseous fluid stream, such as air, uses an induced voltage electrode (202) to efficiently capture the contaminant particles in a filter mate...
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WO/1998/005106 |
An electrostatic precipitator is provided within the housing (14) of a gas discharge laser (10), such as an exciter laser, to collect and trap dust particles generated in the course of laser operation. The precipitator comprises a plural...
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WO/1998/003429 |
A barrier discharge SO�2? to SO�3? converter for conditioning flue gas entering an electrostatic precipitator (ESP) comprising at least one electrode surrounded by high resistivity, high dielectric strength barrier secured at a dista...
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WO/1997/049904 |
The invention discloses a device for filtering (1) internal combustion engine exhaust gases, comprising an electrostatic filtering chamber (10) equipped with electrostatic filtering means (20), a line (13) for supplying gases into the ch...
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WO/1997/048652 |
The invention relates to a method of regulating the flue gas temperature in a cement production plant comprising a kiln (1), a flue gas conditioning device (2), a mill (3) and an electrostatic precipitator (4), whereby the flue gas from ...
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WO/1997/046322 |
The present invention refers to a precipitator having a through-flowing passage for the air to be purified, said precipitator being intended to be included in an air purification device, especially for purifying air from electrically cha...
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WO/1997/043044 |
The present invention relates to electrostatic precipitators which are used to remove particulate matter from gas flows, particularly from flue gas produced by electricity power generating stations. The present precipitators are bulky an...
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WO/1997/041958 |
A method for controlling the electrode cleaning of an electrostatic precipitator unit (1, 2, 3), comprising discharge electrodes and collecting electrodes, between which a high voltage is maintained. Dust deposited on the collecting elec...
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WO/1997/041959 |
A method for controlling an electrostatic precipitator unit, comprising discharge electrodes and collecting electrodes, between which a high voltage is maintained by a direct current supplied to the electrodes. Dust deposited on the coll...
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WO/1997/039817 |
There is provided a vacuum cleaner filter medium which is a nonwoven spunbond web of conjugate spunbond fibers. The web has a Frazier permeability of at least 250 CFM, an NaCl efficiency of at least 65 percent, a Gurley Stiffness of at l...
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WO/1997/039816 |
Systems and methods for operating gas cleaning devices (20) utilize vibration generators (22, 24, 26) wherein the systems include sensors (30, 32, 34) and programs for monitoring and predicting resonant conditions of different surface zo...
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WO/1997/035666 |
A method for controlling an electrostatic precipitator unit, which comprises discharge electrodes and collecting electrodes. Between the electrodes a varying high voltage is maintained by a pulsating direct current supplied thereto. Dust...
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WO/1997/035667 |
A method for controlling an electrostatic precipitator unit, which comprises discharge electrodes and collecting electrodes. Between the electrodes a varying high voltage is maintained by a pulsating direct current supplied thereto. Unde...
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WO/1997/034701 |
An exhaust system (400), such as for a motor vehicle, which releases emissions to atmosphere includes a corona discharge cell (408) with an ion emitter therein, whereby particulate pollutants passing through the system are electrically c...
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WO/1997/035378 |
A power supply system particularly adapted for use with an electrostatic precipitator to provide substantially ripple-free DC power for improved precipitator operation. The power supply is adapted to receive three-phase AC power and to t...
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