Abstract: A filtering separator with a reverse-flow cleaning apparatus has a chamber that travels inside the clean gas area and is provided with a compressed air supply line plus at least one injector. The chamber is divided into a suction area for the drawing in of secondary flush gas and a pressure area. In the wall of the suction area of the chamber there are provided openings with check valve-like blocking elements for the drawing in of the secondary flush gas from the clean gas area. Compressed air injectors may be provided in the clean gas air in front of these blocking elements to assist opening them. A wall of the chamber adjacent to the filter element section of the filter separator may be made of a flexibly bendable material and may further be provided with inflatable hollow bodies in its edge regions to allow the chamber wall to conform to the wall dividing the crude gas air from the clean gas area of the separator.

Abstract: In the case of a filtering separator, the housing of which is divided by a perforated partition into a filter space and a pure gas space the filter space being supplied with unrefined gas, receiving filter elements which are to be cleansed by counterflow flushing and/or agitation, and having a bottom dust collector trough incorporating a dust extraction conveyor, the dust obtained being partly fed to the filter elements again with unrefined gas, the dust collector trough is provided in the area of its dust extraction conveyor with at least one opening leading to an unrefined gas guiding space which is situated at a lower level and connected to the filter space at the top or side, the lower section of which has disposed in it a loosener for the downwardly dropping dust, via which the incoming unrefined gas flows into the unrefined gas guiding space.

Abstract: The housing of the stratified bulk material filter contains several vertical bulk material layers which may be traversed transversely by crude gas flow, and are enflanked at both sides by delimitations and which may be supplied with particulate bulk material from above.A periodically occurring flushing-gas counterflow flushing operation is optionally combined with lateral and/or bottom bulk material extraction, whereby an adsorption of noxious gases and/or separation of particles from the crude gas is resolved advantageously by appropriate selection of the possible combination, in a simple structure.

Abstract: Within its dust gas space, the stratified bulk material filter receives the layers of bulk material which are bordered at either side by delimitations, may be traversed transversely by a flow of flue gas or dust gas, and which are combined in pairs to define a purified gas flow departure space connected to the purified gas side, situated between them. Upon installing the bulk material layer delimitations, the delimitations are first inserted into the dust gas space from the purified gas side at the flow arrival side of the bulk material layers and are immovably suspended therein on bearers of the end sides of each pair of bulk material layers, whereupon gas-permeable delimitations are inserted from the purified gas side to establish the delimitations at the flow departure sides and are suspended by their extremities on the end sides of each pair of bulk material layers, then the spaces between the delimitations at the flow arrival and flow departure sides are charged with bulk material.

Abstract: The present invention relates to a single-chamber or multichamber bag filter apparatus including horizontal and cross-sectionally flatly oval filter bags, each of which being provided with a rigid internal spacing element terminating at a distance before a perforated wall separating the dust gas side from the pure gas side and being loosely supported thereat. The filter bags including the spacing elements are releasably connected at their closed extremity to supports of an auxiliary wall springily mounted in front of the rear wall of the housing, and this auxiliary wall is coupled to an oscillation generator.

Abstract: This invention relates to filtering separators of the kind having a housing which is subdivided by a partition, provided with parallel rows of holes or slots, into a dust-laden gas space for receiving filter elements positioned in parallel rows and being impinged upon by dust-laden gas from the outside towards the inside, and a clean gas space. In addition, the housing is provided with a chamber for cleansing the filter element surfaces of a row by counterflow action while covering at the same time the partition holes or slots leading to the adjacent rows of filter elements. The chamber is arranged for the supply of compressed air to at least one injector arranged to feed compressed air and secondary air to the row of filter elements to be cleansed. The chamber is also reciprocatingly displaceable along the partition in periodic and intermittent manner.

Abstract: This invention relates to the sealing of the aperture rims of cross-sectionally shallowly oval filter bags at the clean gas side of a partition dividing the filter housing into dust gas and clean gas spaces and provided with perforations. Use is made for sealing purposes of a clamping frame placing the aperture rim of each filter bag in contact with the partition at the clean gas side, which is overbridged together with the corresponding partition perforation by a twistable bridging element connected to the clamping frame, at the dust gas side, which bridging element may be placed in resilient contact with the dust gas side of the partition via the bridging element ends and through bulging filter bag portions by means of a spring system bearing on the clamping frame.

Abstract: 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 noxious components of the dust or fume laden gases to absorptively react or combine with the solid substances and form absorption compounds. In order to prevent the conventional formation of inhomogeneous sections in the turbulent or fluidized layer, during the intermixing action, the turbulence material and turbulence carrier, present in the compartment, flow transversely through at least one revolving drum having a perforated peripheral wall and equipped with a charge of filled-in regular or irregular-shaped bodies.

Abstract: This invention relates to filter tubes arranged in a gas-dust removing filter apparatus, and adapted to be cleaned by counterflow scavenging. Such filter tubes are provided with a seal at the clean gas side of a perforated partition which subdivides the filter apparatus, containing the filter tubes, into a dust-removing chamber and a clean gas chamber. The seal includes a clamping frame to grip the rim of the open mouth of a filter tube in resilient manner between itself and the partition. The filter tubes, which are inserted into the dust-removing chamber by way of the perforations of the partition, are each provided with a rigid internal spacing element. Further, in accordance with the invention, the clamping frame is connected to a spring means which engages the spacing element inside a filter tube, and is placeable in a position to bear against the dust-laden gas side of the partition, when being stressed.

Abstract: A gas dust-removing or dedusting filter of the kind incorporating a filter casing, filter tubes or bags having a flattened oval cross-section, and internal spacing elements. The casing includes a vertical partition having perforations and dividing the casing into a pure or clean gas chamber and a gas dust-removing chamber. The tubes or bags are horizontally insertable into the dust-removing chamber through the perforations of the partition and are sealed at their open ends to the clean gas side of the partition while their closed ends are supported on the rear wall of the casing.In accordance with the invention, parallel vertical guide members, each having a surface which slopes with respect to a rear wall of the casing, are secured to the inner side of the rear wall of the casing. One guide member is disposed between two adjacent filter tubes or bags. The filter tubes or bags rest on support bars adjacent the rear wall of the casing, which engage said guide members.

Abstract: The invention relates to a cooler for hot smoke-laden gases which are to be cleaned by a pocket or tube filter situated in a downstream location. The cooler has a housing provided with cooling elements through which cold external air is conducted perpendicular to the direction of flow of the smoke-laden gas. The cooling elements are loose tubes of generally oval shape which project through perforations in two opposing walls of the cooler housing. Associated with each end of each cooling tube outside the cooler housing is an annular flange, which, by means of at least one spring presses an annular gasket situated between itself and the outer wall into the annular gap between the cooling tube and the perforation in the wall of the housing.

Abstract: The invention relates to a cooler for hot smoke-laden gases which are to be cleaned by a pocket or tube filter situated in a downstream location. The cooler has a housing provided with cooling elements through which cold external air is conducted perpendicular to the direction of flow of the smoke-laden gas. The cooling elements are loose tubes of generally oval shape which project through perforations in two opposing walls of the cooler housing. Associated with each end of each cooling tube outside the cooler housing is an annular flange, which, by means of at least one spring presses an annular gasket situated between itself and the outer wall into the annular gap between the cooling tube and the perforation in the wall of the housing.

Abstract: The invention relates to a cooler for hot smoke-laden gases which are to be cleaned by a pocket or tube filter situated in a downstream location. The cooler has a housing provided with cooling elements through which cold external air is conducted perpendicular to the direction of flow of the smoke-laden gas. The cooling elements are loose tubes of generally oval shape which project through perforations in two opposing walls of the cooler housing. Associated with each end of each cooling tube outside the cooler housing is an annular flange, which, by means of at least one spring presses an annular gasket situated between itself and the outer wall into the annular gap between the cooling tube and the perforation in the wall of the housing.

Abstract: A filtering separator, in particular a pocket or tube filter, of the kind in which smoke-laden gas containing dust particles of particularly great adhesiveness is fed into a dust collecting trough of a filter housing at the bottom and upwards towards filter elements and in which the filter elements are cleaned periodically by counter-current scavenging and/or joggling. A proportion of the settling dust agglomerated in the filter which corresponds to the amount of dust in the incoming smoke laden gas and which cannot be carried back to the filter surfaces by the smoke-laden gas is removed from said dust collecting trough.A lower part of the dust collecting trough is occupied by a longitudinally extending, rotatably mounted, perforated or sieve-like drum which is arranged to be filled with heavy bodies such as balls. The upper part of the drum is exposed and acts as a dust-collecting store or reservoir to which the smoke-laden gas is fed in order to flow transversely through the drum and its contents.

Abstract: This invention relates to a tube filter assembly of the kind comprising a housing divided by a perforated wall into a dirty gas chamber and a clean gas chamber, and containing filter tubes which are attached to said perforated wall in a sealed fashion and are arranged to be cleaned periodically by counter-current scavenging from the clean gas side, said filter tubes being arranged in said dirty gas chamber, covering the holes in said perforated wall at their open ends, and being provided with an internal spacer member.

Abstract: 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 collect on and between said bodies, said detaching means affording at least intermittent application of vibration force, and means for feeding at least some of said particles to said separator along with the dirty gas.

Abstract: This invention relates to filtering separators in particular pocket or tube filters, of the kind having a lower inlet for dirty, i.e. dust-or smoke-laden gas containing extremely adherent dust particles which is directed upwards towards the filter elements, the dust which settles when the filter surfaces are cleaned periodically being carried back to the filter surfaces by this dirty gas for agglomeration purposes and a proportion of the agglomerated dust which corresponds to the quantity of dust in the incoming dirty gas and which the said gas is not capable of carrying with it to the filter surface being extracted during the periodic cleaning of the filter elements.

Abstract: This invention relates to filtering dust or smoke-laden gases that contain dust particles by use of a pocket or bag-filter, in which, depending on the characteristics of the dust, the dust filtered out in the filter is extracted therefrom in quantities corresponding approximately to 2 to 100 times the proportion of dust arriving per unit of time in the gas to be filtered. This agglomerates the fine dust which is then continuously fed back to the incoming dust-laden gas prior to, or in, the filter. Thereafter, a quantity of incident dust is removed from the filter, this quantity corresponding to the amount of dust contained in the dirty gas per unit of time.In accordance with this invention, a chemical additive substance is fed to the dust which is to be fed back continuously in circuit to the filter and which is incident on or is to be agglomerated in the filter, said substance being capable of reacting with any chemical contaminants contained in the dust-laden gas so as to form filterable substances.