| Patent Number |
Title Of Patent |
Date Issued |
| D393705 |
Container for plastic foil for the handling of filter bags |
April 21, 1998 |
|
| D390455 |
Cartridge for use with a filter bag |
February 10, 1998 |
|
| D337280 |
Probe for air flow measurements |
July 13, 1993 |
|
| 6726020 |
Method and device for a dry cleansing plant for aluminum reduction furnaces exhaust gas |
April 27, 2004 |
| Methods and apparatus are provided, which separate out at least a portion of fine dust, including fluoride, from recycled alumina. The difference in natural drop velocity and flow properties of fine and coarse particles is used to effect the separation. |
| 6562095 |
Filtering apparatus for air treatment apparatus |
May 13, 2003 |
| A filtering apparatus for an air treatment apparatus (5), a superior purity of the filtered air being required. The apparatus has a plurality of filter cartridges (3), provided with filters (2) and inserted into one cassette (4) each. The cassettes are fastened in the air treatment a |
| 6508994 |
Method and apparatus for cleaning flue gases |
January 21, 2003 |
| A method and an apparatus for cleaning flue gases with particulate slaked lime are described. In the method, burnt lime is dry-slaked with water to a moisture content of at least 5% by weight, and the slaked lime is contacted with the flue gases within 1 minute of the slaking. Preferably |
| 6406524 |
Plant for removing fluor containing waste gases |
June 18, 2002 |
| A decentralized cleaning plant for dry cleaning by removing fluorine containing waste gases from a reduction process in several electrolytic cells for aluminum, comprising: a storing place for aluminum oxide; a transportation system to distribute aluminum oxide from the storing place |
| 6306357 |
Process and apparatus for absorbing hydrogen sulphide |
October 23, 2001 |
| A process and an apparatus in black-liquor evaporation for the selective removal, by liquid absorption, of hydrogen sulphide from the generated gas (3) containing hydrogen sulphide as well as carbon dioxide, an disclosed. In the process, the gas is counter-currently brought into multista |
| 6273926 |
Cleanroom filter unit |
August 14, 2001 |
| A filter unit for airtight attachment to a framework of a cleanroom ceiling includes a filter, a circumferential wall surrounding the filter, and a downwardly projecting sealing knife to be received in a sealant containing groove formed in said framework. The sealing knife includes verti |
| 6200215 |
Fan module for clean room applications |
March 13, 2001 |
| A fan module for clean room applications, comprising outer, vertical restriction walls (5) with a lower edge part (6) having a planar lower surface (7) as well as an element (9) protruding from the outer edge of the planar lower surface for cooperation with a filter docking module (2) |
| 6167984 |
Device and a method for sound reduction in a transport system for gaseous medium and use of the |
January 2, 2001 |
| A device and a method for achieving sound reduction within a frequency band in a transport system for gaseous medium, the transport system being arranged between an inlet, which is connected to a sound source, and an outlet. The transport system comprises with a plurality of interconnect |
| 6125606 |
Beam construction in ceilings of clean air rooms |
October 3, 2000 |
| A beam construction for ceilings in clean rooms, comprising first (1) and second (2) beams. The first and second beams are arranged essentially horizontally and perpendicularly to each other and have longitudinal ducts (7) for receiving a liquid or viscous sealant. In order to facilitate |
| 6092304 |
Blow box for use in a plant for drying a material web |
July 25, 2000 |
| A blowbox for use in a plant for drying a material web includes an essentially horizontal box wall having formed therein circular orifices and eyelid perforations each of which includes a slit extending in parallel with the center line of the upper box wall. A depression is formed m |
| 6051054 |
Method for separating dust from hot process gases |
April 18, 2000 |
| 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 agglomeration of the dust. Subseque |
| 6033639 |
Method for cleaning process gases |
March 7, 2000 |
| A method for cleaning process gases is provided, in which a sorbent is supplied to the process gases for reaction with gaseous pollutants that are present therein, thereby forming particulate reaction products which are separated in a subsequent particulate separator, and in which the |
| 6022388 |
Device for cleaning filter elements |
February 8, 2000 |
| A device for cleaning filter elements, such as filter bags, having upper open ends, in a filter installation for filtering polluted gas. The gas passing, during operation, from the outside and through said filter elements, in which installation filter elements are juxtaposed in a plu |
| 5966837 |
Wood drying plant and a method of purifying a drying gas from a wood drying device |
October 19, 1999 |
| The device relates to a wood drying plant comprising a wood drying device and a purifying device which is arranged to receive a drying gas from the wood drying device, the drying gas comprising water steam and volatilized organic components such as terpenes, and to purify the drying gas |
| 5931989 |
Device in an electrostatic precipitator for the suspending, controlling and rapping of collectin |
August 3, 1999 |
| A device in an electrostatic precipitator for suspending, controlling and rapping one or more collecting electrodes arranged essentially vertically in one or more substantially parallel rows includes, for each row, a substantially horizontally oriented carrier element, to which the upper |
| 5917065 |
Cyclone |
June 29, 1999 |
| A cyclone for treating a gas flow (F) containing dust comprises a cyclone chamber (1) of circular cross section and having a vertical axis, and a central tube (7) of circular cross section, which is coaxially arranged in the upper portion of the cyclone chamber (1). An elongated insert e |
| 5887973 |
Device for mixing particulate material and liquid |
March 30, 1999 |
| A device for mixing particulate material and liquid comprises a container (1), an inlet (9) for the introduction of particulate material (P1) into the container (1), a spraying means (15, 16) for spraying liquid over the particulate material in the container, an agitator (17, 17', 22, 22 |
| 5885539 |
Method for separating substances from a gaseous medium by dry adsorption |
March 23, 1999 |
| The treatment, through a dry adsorption process, of a gas from a hot electrolytic process for aluminum production comprises at least two stages. Particulate aluminum oxide (the adsorbent) passes through the stages of the adsorption process countercurrently to the gas. Thus, the gas i |
| 5855923 |
Device for levelling a particulate material web |
January 5, 1999 |
| A device for levelling a particulate material web (3), such as a wood-fibre mat laid out on a wire (2) and intended for the production of wood-fibre boards, the material web being moved in relation to the device, comprises a rotary shaft (4) and a plurality of elliptic discs (6) mounted |
| 5846303 |
Scrubber for cleaning exhaust air contaminated with paint particles |
December 8, 1998 |
| The invention concerns a scrubber for cleaning work area exhaust air polluted with particles, in particular exhaust air containing particles of paint from a paint spray booth. The scrubber has a flow duct (5), defined in cross section by two opposite duct walls (7). The flow duct (5) |
| 5816003 |
Clean-room wall |
October 6, 1998 |
| A clean-room wall including vertically extending wall profile members (2,4,6) against which one or several wall panels (10) are mounted. In their sides, facing the interior (14) of the room, the profiles are formed substantially parallel with the wall extending flanges (8) against which |
| 5762548 |
Treatment cubicle and a method of ventilating a treatment cubicle |
June 9, 1998 |
| A method and apparatus of ventilating a treatment cubicle such as a painting or spraying cubicle used for painting items such as vehicle bodies. Wherein fresh air to be supplied to the cubicle is supplied via an air-permeable ceiling (1); and air supply chamber (2) is provided above |
| 5752998 |
Water-spray separator |
May 19, 1998 |
| A water-spray separator for purifying particle-polluted discharged air (9) from a working area, especially for purifying discharged air containing paint particles from a spray-painting booth, with a flow duct adjacent to the working area and with a cross-sectional extent set by two space |
| 5738337 |
Poppet damper in exhaust gas duct |
April 14, 1998 |
| The present invention provides a poppet damper, disposed in an exhaust gas duct, which makes it possible to perform an easy machining for providing a sealing surface and which provides excellent sealing following deformation caused by heat. The poppet damper includes a damper seat, dispo |
| 5725669 |
Car body surface treatment device |
March 10, 1998 |
| In a simple car body surface treatment device, the car body (16) is brought into and taken out of the treatment bath (1) exclusively by rotation of a revolving device (2). The car body (16) arranged on a loading carriage (11) is detachably connected to the revolving device (2). In additi |
| 5725102 |
Method and device for separating heavy particles from a particulate material |
March 10, 1998 |
| In a method for separating heavy particles from a particulate material containing such heavy particles, use is made of a device having a Coanda sifter, which is adapted to receive a flow of the particulate material and which has a downwardly-facing, convexly single-curved surface (9), an |
| 5711088 |
Device for recuding the effects of the tendency of a paper web to adhere to a drying cylinder in |
January 27, 1998 |
| A device is arranged in the drying section of a papermaking machine for reducing the effects of the tendency of a paper web (4) to adhere to a drying cylinder (1) as it passes from the drying cylinder to a subsequent guide roll (2). In the drying section, the paper web (4), supported by |
| 5707422 |
Method of controlling the supply of conditioning agent to an electrostatic precipitator |
January 13, 1998 |
| A method for use in an electrostatic precipitator unit, of controlling, with a view to cleaning an incoming dust-laden gas, the supply of conditioning agent to the incoming contaminated gas upstream of the precipitator unit. The precipitator unit includes discharge electrodes and col |
| 5693301 |
Method for removing sulphur dioxide from a gas |
December 2, 1997 |
| A method for removing sulphur dioxide from a gas, such as a flue gas, is disclosed. In the method, the sulphur-dioxide-containing gas is conducted upwards through at least one layer of aqueous absorbent suspension, whose absorbent is lime or limestone, the volume of the suspension layer |
| 5657555 |
Process and hot-air dryer for dying coated surfaces |
August 19, 1997 |
| In a process for drying coated surfaces in a hot-air dryer, part of the hot air in the dryer is continuously circulated therein as a secondary air stream which is mixed with a primary air stream heated to above the drying temperature (T.sub.max). This reduces the quantity of hot air to b |
| 5651822 |
Vehicle body surface treatment apparatus |
July 29, 1997 |
| In order to create a simple car body surface treatment device, a car body is introduced into and removed again from the treatment bath (11) simply by being rotated by a rotating device (2), at the same time as another car body is pushed onto and secured to said rotating device or conveye |
| 5641124 |
Apparatus for cleaning gas |
June 24, 1997 |
| A nozzle (12a, 12b, 12c) for atomizing a liquid, optionally containing suspended dry matter, through use of compressed gas, comprises, an inlet (32b) for liquid, an inlet (31b) for compressed gas, and an outlet (41) for gas mixed with finely divided liquid, as well as an intermediate |
| 5639294 |
Method for controlling the power supply to an electrostatic precipitator |
June 17, 1997 |
| Method for controlling, in case of flashover between electrodes in an electrostatic precipitator, the current supply to the electrodes from a controllable high-voltage direct-current source. The current supplied to the precipitator and the voltage between the electrodes of the precip |
| 5624648 |
Method and apparatus for cleaning flue gas |
April 29, 1997 |
| A method and apparatus for cleaning a flue-gas stream containing hydrogen chloride and sulfur dioxide are disclosed. The flue gas is treated in a wet cleaner (5), thereafter injected with lime (9) and filtered through a filter (13). The method and apparatus are distinguished by the fact |
| 5582634 |
Method and apparatus for cleaning a gas |
December 10, 1996 |
| A method and an apparatus for cleaning a gas containing pollutants, such as hydrogen chloride and heavy metals, are described. The polluted gas (2) is contacted with an aqueous washing liquid (3) in a scrubber (1), whereupon part of the washing liquid is preevaporated in a preevaporation |
| 5573183 |
Method and apparatus for heating building and ventilation air |
November 12, 1996 |
| A method and apparatus for heating room space of a building. According to the invention, heat is conveyed from district heating water to a heating liquid of heating circuits for heating the building, tap water and supply air of ventilation. According to the invention, the heating circuit |
| 5551838 |
Inlet bell for centrifugal fans |
September 3, 1996 |
| Inlet bell for centrifugal fans having an impeller (15, 24) with a cover plate (14, 23), the inlet bell opening into the cover plate with an intervening gap (I) for recirculation air, wherein the inlet bell (11, 20) is provided with a conical inlet part (12, 21), tapering towards the |
| 5545011 |
Angle adjustable vane suspension |
August 13, 1996 |
| A vane suspension for angle adjustable mounting of a vane (6) in a hub (1), comprising a seat (3) in the hub and a mounting part on the vane (6). The mounting part on the vane comprises a stud (16) and a shoulder (17) provided at the end of the stud with a partly spherical contact surfac |
| 5533706 |
Valve arrangement |
July 9, 1996 |
| A valve arrangement includes a valve housing having a circular cylindrical portion in which is formed a valve chamber, a control valve and a valve member. The valve chamber has an inlet adapted to be connected to a pressure-medium source for allowing pressure-medium to flow into the valv |
| 5477464 |
Method for controlling the current pulse supply to an electrostatic precipitator |
December 19, 1995 |
| The present invention relates to a method for controlling, in an electrostatic precipitator unit comprising discharge electrodes and collecting electrodes between which a varying high voltage is maintained, a pulsating direct current supplied to these electrodes. In the method accord |
| 5474597 |
Method and device for gas cleaning or gas cooling |
December 12, 1995 |
| In a method for cleaning polluted gas and/or cooling of hot gas, and a device for carrying out the method, the gas is contacted with finely divided liquid. The finely divided liquid is supplied in the form of essentially umbrella-shaped shells or essentially linear curtains, in a reg |
| 5460569 |
Air supply housing arrangement for paint spray booths |
October 24, 1995 |
| An air conditioning system for a paint spray booth is located entirely within the booth below the paint application zone for supplying a modified temperature, humidity, and/or filtrated air to the application zone. |
| 5427565 |
Method and device for cleaning fan impellers |
June 27, 1995 |
| In a method of cleaning fan impellers bursts of solid material are discharged towards the impeller blades or other parts of the impeller, subjected to deposits, by pulses of compressed air, shot from a compressed air cannon. A device for cleaning fan impellers includes at least one c |
| 5426975 |
Method and apparatus for determining the total flow rate in a ventilation installation |
June 27, 1995 |
| A method and apparatus for determining the total flow rate of air flowing through a ventilation installation with a free suction fan (15) is described. The flow rate or a corresponding pressure is determined by measurement of the partial flow rate or a corresponding pressure at at le |
| 5350296 |
Method and device for cooling a rotary kiln |
September 27, 1994 |
| In a method for cooling a rotary kiln having a cylindrical outer jacket, cooling air is blown at high speed radially towards the jacket from an annular supply-air chamber surrounding the jacket and having a perforated inner wall which is located at a slight distance from the jacket and |
| 5339688 |
Device for measuring a gas flow, and method for using the device |
August 23, 1994 |
| A device for measuring a gas flow (F) has a measuring body (1) in the form of a cylinder, and a heating device (12) for heating the measuring body. A slot (5) extends axially into the cylinder from one end thereof so as to divide a first portion of the cylinder into two symmetrical halve |
| 5295310 |
Method for drying a particulate material |
March 22, 1994 |
| In a method for drying a particulate material, the material is supplied into a first drying conduit where it is dried and transported to a first cyclone by means of drying air. The material is separated from the drying air in the first cyclone. The separated material is supplied into a s |
