Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
  • B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
  • B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
  • B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
  • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
  • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
  • B01D53/0407—Constructional details of adsorbing systems
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
  • B01D2253/10—Inorganic adsorbents
  • B01D2253/102—Carbon

Definitions

• the present invention relates to a filter cassette according to the introductory portions of the independent claims.
• a filter cassette intended to receive a filter substance into its interior and being intended for use as a filter.
• Filter cassettes contains a filter substance, often in granulate form, which may for example be active coal.
• the volume of the filter substance may change of the substance is shaken, and there is a risk that air pockets are formed which lack filter substance.
• Such voids allow the fluid that is intended to be filtered to pass unfiltered and this is highly disadvantageous.
• An object of the invention is therefore to provide a filter cassette designed in such a way that the risk that voids in the filter substance is formed is minimized.
• the invention relates to a filter cassette, during use intended to be oriented in a position for use.
• the filter cassette comprises at least two filter cells intended to contain a filter substance in their interiors. Positioned for use, the filter cassette has a larger height than width, and the at least two filter cells have a larger width than height.
• the at least two filter cells are delimited upwards and downwards by separating bars 1 that extend essentially horizontally. The height of the heap of filter substance is therefore kept as low as possible, advantageously making the risk that the filter substance is being compressed low.
• Fig. 1 shows an embodiment of the filter cassette in a first processing step
• Fig. 2 shows the filter cassette in a second processing step
• Fig. 3 shows the filter cassette oriented for use Description of a preferred embodiment
• the invention relates to a filter cassette, that is a container that in its interior receives a filtering substance, which with the enclosed substance acts as a filter.
• the filter may be used for filtering various types of undesirable substance, and the filter may be used for filtering either gases or liquids.
• a common application is filtration of air, and the filtering substance is commonly active coal.
• the filter cassette is in the figures illustrated in three steps, where the two first relates to manufacturing steps and the third illustrates the cassette oriented for use.
• the filter cassette is here illustrated as a rectangular element and this is often the case, but obviously the cassette may be embodied in other fashions.
• the filter cassette is normally a comparatively thin element of even thickness.
• the filter cassette is in all the figures illustrated as seen from the front, and a front and a rear enclosure element has been eliminated from the figures, which typically is in the form of a net.
• Fig. 1 shows an embodiment of the filter cassette in a first processing step, where the filtering substance has not yet been filled into the interior of the cassette.
• the filter cassette comprises a frame made from bars 1, 2a with seven parallel separating bars all of which are attached to a first side bar 2a.
• the seven separation bars extend vertically and the side bar extend horizontally.
• Six intermediate spaces sit between the seven separation bars, and each intermediate space is closed downwards by the first side bar, while the intermediate spaces are open towards the direction that in this processing step is upwards. It is here easy to fill the intermediate spaces with a desired filtering substance by pouring it down from above, such that it fills each intermediate space unto the upper limit of the intermediate spaces.
• Fig. 2 shows the filter cassette in a second processing step, where each intermediate space has been filled with a filter substance unto the upper limit of the intermediate spaces, and the intermediate spaces have then been closed by attaching a second side bar 2b onto what, with the cassette oriented in the way it here is, is the upper ends of the separation bars 1.
• intermediate space now constitutes a close space delimited by one pair of separating bars 1, the first and second side bars 2a-b, and the front and rear enclosure elements.
• Each such closed space is elongated with a longer vertical side, so if the filter cassette had been used oriented in this fashion, shakings and vibrations could compress the filter substance such that an empty space had formed at the top. This is highly unfortunate as part of the air intended to be filtered, may the pass unfiltered through this empty space. The volume of this empty space tends to be
• the filter cassette must during use be differently oriented.
• Fig. 3 shows the filter cassette oriented for use, and it has here been turned such that the separation bars 1 now extend horizontally and the first and second separation bars 2-b extend vertically.
• the heap of filter substance in each intermediate space is small, such that the pressure on each heap due to its own weight is low.
• the filter cassette contents to a lesser degree tend to be affected by shakings and vibrations, so the risk that a void is formed at the top is minimized.
• the filter cassette also achieves a higher degree of torsional rigidity with many short horizontal separation bars, than it would have achieve with longer vertical separation bars. If the filter cassette changes shape due to an external force, the filter substance tends to redistribute, so the torsional rigidity therefore gives a further reduced risk that voids are formed above the filter substance.
• the increased torsional rigidity is achieved if for example the filter cassette is rectangular with its longer side during use oriented vertically, but the filter cassette may obviously be differently embodied.
• the increased torsional rigidity is achieved independently of how the filter cassette is designed, as long as the cassette positioned for use is taller than it is wide, and the separation bars in position for use extend mainly horizontally.
• Position for use constitutes the orientation the filter cassette is intended to have during use after the production phase, and it is advantageous if the filter cassette during transport is oriented in the same way as it is in use.
• the separating bars are oriented in nearly horizontally and in the illustrated embodiment, the side bars 2a-b then extend vertically. If the filter cassette is differently designed than rectangular, the separation bars are still oriented nearly horizontally, while the side bars 2a-b may extend in directions other than vertically.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Engineering & Computer Science (AREA)
• Analytical Chemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Filtering Of Dispersed Particles In Gases (AREA)
• Filtration Of Liquid (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=59057215

Family Applications (1)

Country Status (4)

Cited By (1)

Citations (2)

Family Cites Families (1)

• 2015
  • 2015-12-15 SE SE1500510A patent/SE540104C2/sv unknown
• 2016
  • 2016-11-21 JP JP2018527748A patent/JP2019502538A/ja active Pending
  • 2016-11-21 EP EP16876139.3A patent/EP3389825A4/en not_active Withdrawn
  • 2016-11-21 WO PCT/SE2016/000071 patent/WO2017105312A1/en unknown

Patent Citations (2)

Non-Patent Citations (1)

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