A system for treating exhaust gas generated by combustion of biomass comprises a frame, a first cyclonic separation stage supported on the frame and comprising a plurality of parallel gas cyclones in fluidic communication with an inlet receiving the exhaust gas for removing from the exhaust gas particulate matter exceeding a first threshold size, and a second bag filtration stage supported on the frame and comprising a plurality of serially-communicated baghouses each comprising a plurality of bag filters therein for removing, from the partially treated exhaust gas received from the first cyclonic separation stage, particulate matter exceeding a second threshold size that is smaller than the first size which was passed through the first treatment stage. The gas cyclones of the first stage are arranged in a laterally extending row across the frame and the baghouses are arranged in a longitudinally extending row across the frame.

A filtration device is provided, configured to be assembled between a tube seat and an air diffuser of a ventilation system, including: a main body, at least one filter and at least one light source. The main body includes an air inlet connected with the tube seat, an air outlet connected with the air diffuser and a shielding portion blocking between the air inlet and the air outlet. The shielding portion defines at least one passage. The at least one filter is disposed on the main body and corresponds to the at least one passage. The at least one filter has a photocatalyst material disposed thereon. An illumination area of the at least one light source corresponds to the at least one passage. A distance between the at least one light source and the at least one filter is smaller than or equal to 100 mm.

A filter bag support system arranged to support a filter bag for separating food powder and air, comprising a support cage arranged to be placed inside the filter bag, and a lock ring arranged to be placed inside a top section of the support cage, wherein the top section of the support cage is expandable in a radial direction by the lock ring which is arranged to expand the top section of the support cage in the radial direction, towards an edge of the opening of a cell plate when the filter bag support system is located in the cell plate and when the lock ring is rotated within the top section.

A filtration device is provided, configured to be assembled between a tube seat and an air diffuser of a ventilation system, including: a main body, at least one filter and at least one light source. The main body includes an air inlet connected with the tube seat, an air outlet connected with the air diffuser and a shielding portion blocking between the air inlet and the air outlet. The shielding portion defines at least one passage. The at least one filter is disposed on the main body and corresponds to the at least one passage. The at least one filter has a photocatalyst material disposed thereon. An illumination area of the at least one light source corresponds to the at least one passage. A distance between the at least one light source and the at least one filter is smaller than or equal to 100 mm.

This present invention relates to a unique HVAC air filter holder designed to prevent or reduce air from escaping or otherwise bypassing the HVAC air filter. The HVAC air filter holder comprises a filter securing device, and is a material that is compressible, moldable, expansible or the like such that it can be secured around the perimeter of the air filter.

A system for treating exhaust gas generated by combustion of biomass comprises a frame, a first cyclonic separation stage supported on the frame and comprising a plurality of parallel gas cyclones in fluidic communication with an inlet receiving the exhaust gas for removing from the exhaust gas particulate matter exceeding a first threshold size, and a second bag filtration stage supported on the frame and comprising a plurality of serially-communicated baghouses each comprising a plurality of bag filters therein for removing, from the partially treated exhaust gas received from the first cyclonic separation stage, particulate matter exceeding a second threshold size that is smaller than the first size which was passed through the first treatment stage. The gas cyclones of the first stage are arranged in a laterally extending row across the frame and the baghouses are arranged in a longitudinally extending row across the frame.

A pocket filter adapted for filtering grease and other liquid aerosols has first and second depth loading media with a separator that prevents wicking thereby to extend filter life and capacity. The first layer is also of lower efficiency than the second to distribute loading and further extend life. The spacer may be of unwoven fiber mesh. Various feature of the pocket filter ensure free flow of effluent streams.

A filter element (5) for separating solids from liquids or gases is described, wherein the filter element (5) has a first perforated plate (1) and a second perforated plate (2), wherein the two perforated plates (1, 2) are arranged parallel to one another and are covered by a filter covering (3). In this case, the two perforated plates (1, 2) are displaceable in the longitudinal direction relatively to one another from a non-displaced state into a displaced state, and the plates (1, 2) have spacers (4) on the mutually facing inner sides, which spacers are constructed in such a manner that the spacing (D) between the plates (1, 2) is larger in the displaced state than in the non-displaced state (D), so that the filter covering (3) is tensioned in the displaced state of the plates (1, 2). In addition, at least one latching element (6) is provided, which fixes the plates (1, 2) to one another in the displaced state.

A pocket filter adapted for filtering grease and other liquid aerosols has first and second depth loading media with a separator that prevents wicking thereby to extend filter life and capacity. The first layer is also of lower efficiency than the second to distribute loading and further extend life. The spacer may be of unwoven fiber mesh. Various feature of the pocket filter ensure free flow of effluent streams.

A filter bag support system arranged to support a filter bag for separating food powder and air, comprising a support cage arranged to be placed inside the filter bag, and a lock ring arranged to be placed inside a top section of the support cage, wherein the top section of the support cage is expandable in a radial direction by the lock ring which is arranged to expand the top section of the support cage in the radial direction, towards an edge of the opening of a cell plate when the filter bag support system is located in the cell plate and when the lock ring is rotated within the top section.