GB2186210A - Divided-bed fluid filter - Google Patents

Divided-bed fluid filter Download PDF

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Publication number
GB2186210A
GB2186210A GB08603331A GB8603331A GB2186210A GB 2186210 A GB2186210 A GB 2186210A GB 08603331 A GB08603331 A GB 08603331A GB 8603331 A GB8603331 A GB 8603331A GB 2186210 A GB2186210 A GB 2186210A
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GB
United Kingdom
Prior art keywords
filter
casing
holder
canister
fluid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB08603331A
Other versions
GB2186210B (en
GB8603331D0 (en
Inventor
Dennis Albert George Marshall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marshall D A G
Original Assignee
Marshall D A G
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marshall D A G filed Critical Marshall D A G
Priority to GB8603331A priority Critical patent/GB2186210B/en
Publication of GB8603331D0 publication Critical patent/GB8603331D0/en
Publication of GB2186210A publication Critical patent/GB2186210A/en
Application granted granted Critical
Publication of GB2186210B publication Critical patent/GB2186210B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B01D53/0423—Beds in columns
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/403—Further details for adsorption processes and devices using three beds

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

Abstract

A divided-bed fluid filter comprises a casing (10) containing three filter elements (12, 14, 16) and inclined planar baffles (18, 20) which ensure that air or other gaseous fluid entering the filter is divided into three separate streams, in which the casing (10) is of generally rectangular shape and is provided with a sealing element (36) on its upper external surface to permit that sealing element to make sealing contact with a corresponding flange or other surface within a filter-holding canister into which the filter is insertable, there being handles (44, 46) on the front wall (48) of the filter casing (10) to permit the casing to be withdrawn from the canister by grasping and pulling those handles. <IMAGE>

Description

SPECIFICATION Divided-bed fluid filter This invention relates to divided-bed fluid filters for removing noxious substances from air or other gaseous streams and is especially applicable to filters arranged to be inserted in a canister or other hollow holder.
The main aim of the invention is to provide a filter permitting a comparatively large volumetric flow of air or other gaseous fluid through it, as well as allowing the filter to be slid into and out of a canister or other holder in which it is installed during use.
With this aim in mind, the invention is directed to a divided-bed fluid filter for removing noxious substances from air or other gaseous streams comprising a casing or housing containing three spaced-apart, activated-carbon, planar filter elements with baffles arranged between adjacent filter elements in such a way that air or other gaseous fluid to be filtered is divided into three separate streams with each stream passing through a respective one of the filter elements, in which the casing or housing is of generally rectangular form for sliding insertion into a canister or other holder for the filter, there being a sealing element on an external surface of the casing adapted to make sealing contact with a corresponding surface within the holder, as well as one or more handles on a wall of the casing which can be grasped to withdraw the casing from the holder.
An example of a fluid filter in accordance with the invention is shown in the accompanying drawings, in which: Figure 1 is a vertical section through the fluid filter; Figure 2 is a side view of the filter at right angles to the section shown in Fig. 1; Figure 3 is a detail view of a handle forming part of the filter; Figure 4 is a vertical section through a canister in which the filter is installed; and Figure 5 is another vertical section through the canister but at right angles to the section shown in Fig. 4.
The filter shown in Figs. 1-3 comprises a casing or housing 10 containing three spacedapart activated-carbon planar filter elements 12, 14 and 16 arranged one above each other in the casing 10 but off-set or staggered with respect to each as shown in Fig. 1. Each filter element will normally comprise a plurality of layers of cellular material with particles or granules of activated carbon being packed into the cells of the cellular layers so as to act as a filtering medium for air or other gaseous fluid passing through the filter. The cellular layers in each filter element are preferably offset with respect to each other so that their cells are out of alignment and, in the best arrangement, at angles to each other so as to ensure thorough scrubbing of the fluid.
Arranged between the two filter elements 12 and 14 is an inclined planar baffle 18.
Similarly, an inclined planar baffle 20 is arranged between the two filter elements 14 and 16. It thus follows that air or other gaseous fluid entering the filter through the openings 22 and 24 at the upper end of the filter is divided into three separate streams with each stream passing through a respective one of the filter elements. The three streams are then re-combined on leaving the filter through the outlets 26 and 28 at the lower end of the filter. By dividing the fluid into three separate streams each of which is then scrubbed by the carbon granules or particles in a respective one of the filter elements, the filter is made capable of handling a large volumetric quantity of air or other gaseous fluid.
As shown in Figs. 4 and 5, the filter shown in Figs. 1-3 is adapted to be inserted into a canister 30 or other hollow holder. The canister has a side opening 32 which is normally protected by a sealed cover 34 but which can be exposed by removal of the cover so as to allow the filter to be slid through the opening 32 into the canister. To make all this possible, the casing 10 is given a generally rectangular shape and is provided with a sealing element 36 on its upper external surface to permit that sealing element to make sealing contact with a corresponding flange or other surface 40 which the canister 30. If desired, a similar seal can be provided at the lower end 38 of the filter casing 10 to make sealing contact with a flange 42 in the casing.
In addition, handles 44 and 46 are arranged on the front wall 48 of the filter casing 10 to permit the casing to be withdrawn from the canister 30 by grasping and pulling those handles. If desired, additional handles can also be provided on the side surfaces of the filter casing 10, but in this instance the handles do not project beyond the outside surface of those side walls.
1. A divided-bed fluid filter for removing noxious substances from air or other gaseous streams, comprising a casing or housing containing three spaced-apart, activated-carbon, planar filter elements with baffles arranged between adjacent filer elements in such a way that air or other gaseous fluid to be filtered is divided into three separate streams with each stream passing through a respective one of the filter elements, in which the casing or housing is of generally rectangular form for sliding insertion into a canister or other holder for the filter, there being a sealing element on an external surface of the casing adapted to make sealing contact with a corresponding surface within the holder, as well as one or more handles on a wall of the casing which can be grasped to withdraw the casing from
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (9)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Divided-bed fluid filter This invention relates to divided-bed fluid filters for removing noxious substances from air or other gaseous streams and is especially applicable to filters arranged to be inserted in a canister or other hollow holder. The main aim of the invention is to provide a filter permitting a comparatively large volumetric flow of air or other gaseous fluid through it, as well as allowing the filter to be slid into and out of a canister or other holder in which it is installed during use. With this aim in mind, the invention is directed to a divided-bed fluid filter for removing noxious substances from air or other gaseous streams comprising a casing or housing containing three spaced-apart, activated-carbon, planar filter elements with baffles arranged between adjacent filter elements in such a way that air or other gaseous fluid to be filtered is divided into three separate streams with each stream passing through a respective one of the filter elements, in which the casing or housing is of generally rectangular form for sliding insertion into a canister or other holder for the filter, there being a sealing element on an external surface of the casing adapted to make sealing contact with a corresponding surface within the holder, as well as one or more handles on a wall of the casing which can be grasped to withdraw the casing from the holder. An example of a fluid filter in accordance with the invention is shown in the accompanying drawings, in which: Figure 1 is a vertical section through the fluid filter; Figure 2 is a side view of the filter at right angles to the section shown in Fig. 1; Figure 3 is a detail view of a handle forming part of the filter; Figure 4 is a vertical section through a canister in which the filter is installed; and Figure 5 is another vertical section through the canister but at right angles to the section shown in Fig. 4. The filter shown in Figs. 1-3 comprises a casing or housing 10 containing three spacedapart activated-carbon planar filter elements 12, 14 and 16 arranged one above each other in the casing 10 but off-set or staggered with respect to each as shown in Fig. 1. Each filter element will normally comprise a plurality of layers of cellular material with particles or granules of activated carbon being packed into the cells of the cellular layers so as to act as a filtering medium for air or other gaseous fluid passing through the filter. The cellular layers in each filter element are preferably offset with respect to each other so that their cells are out of alignment and, in the best arrangement, at angles to each other so as to ensure thorough scrubbing of the fluid. Arranged between the two filter elements 12 and 14 is an inclined planar baffle 18. Similarly, an inclined planar baffle 20 is arranged between the two filter elements 14 and 16. It thus follows that air or other gaseous fluid entering the filter through the openings 22 and 24 at the upper end of the filter is divided into three separate streams with each stream passing through a respective one of the filter elements. The three streams are then re-combined on leaving the filter through the outlets 26 and 28 at the lower end of the filter. By dividing the fluid into three separate streams each of which is then scrubbed by the carbon granules or particles in a respective one of the filter elements, the filter is made capable of handling a large volumetric quantity of air or other gaseous fluid. As shown in Figs. 4 and 5, the filter shown in Figs. 1-3 is adapted to be inserted into a canister 30 or other hollow holder. The canister has a side opening 32 which is normally protected by a sealed cover 34 but which can be exposed by removal of the cover so as to allow the filter to be slid through the opening 32 into the canister. To make all this possible, the casing 10 is given a generally rectangular shape and is provided with a sealing element 36 on its upper external surface to permit that sealing element to make sealing contact with a corresponding flange or other surface 40 which the canister 30. If desired, a similar seal can be provided at the lower end 38 of the filter casing 10 to make sealing contact with a flange 42 in the casing. In addition, handles 44 and 46 are arranged on the front wall 48 of the filter casing 10 to permit the casing to be withdrawn from the canister 30 by grasping and pulling those handles. If desired, additional handles can also be provided on the side surfaces of the filter casing 10, but in this instance the handles do not project beyond the outside surface of those side walls. CLAIMS
1. A divided-bed fluid filter for removing noxious substances from air or other gaseous streams, comprising a casing or housing containing three spaced-apart, activated-carbon, planar filter elements with baffles arranged between adjacent filer elements in such a way that air or other gaseous fluid to be filtered is divided into three separate streams with each stream passing through a respective one of the filter elements, in which the casing or housing is of generally rectangular form for sliding insertion into a canister or other holder for the filter, there being a sealing element on an external surface of the casing adapted to make sealing contact with a corresponding surface within the holder, as well as one or more handles on a wall of the casing which can be grasped to withdraw the casing from the holder.
2. A filter according to claim 1, in which the filter elements are arranged one above each other in the casing or housing and are off-set or staggered with respect to each other.
3. A filter according to claim 1 or claim 2, in which each filter element comprises a plurality of layers of cellular material with particles or granules of activated carbon being packed into the cells of the cellular layers so as to act as a filtering medium for air or other gaseous fluid passing through the filter, the cellular layers in each filter element being offset with respect to each other so that their cells are out of alignment and/or with the cells of adjacent layers at angles to each other so as to ensure thorough scrubbing of the fluid.
4. A divided-bed fluid filter substantially as described herein with reference to Figs. 1-3 of the accompanying drawings.
5. A hollow filter holder containing a filter as claimed in ay one of claims 1-4, the filter holder having an opening which is normally protected by a sealed cover but which can be exposed by removal of the cover so as to allow the filter to be slid through the opening into the holder, in which the sealing element on the filter casing is located on the upper external surface of the latter and makes sealing contact with an internal flange within the filter holder.
6. A hollow filter holder according to claim 5, in which a sealing element is also provided at the lower end of the filter casing so as to make sealing contact with another internal flange within the filter holder.
7. A hollow filter holder according to claim 5 or claim 6, in which the handle or handles on the filter casing are provided on the front wall of the latter.
8. A hollow filter holder according to claim 7, in which handles are also provided on the side surfaces of the filter casing but without projecting beyond the outside surface of those side walls.
9. A hollow filter holder containing a filter substantially as described herein with reference to Figs. 4 and 5 of the accompanying drawings.
GB8603331A 1986-02-11 1986-02-11 Divided-bed fluid filter Expired - Lifetime GB2186210B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8603331A GB2186210B (en) 1986-02-11 1986-02-11 Divided-bed fluid filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8603331A GB2186210B (en) 1986-02-11 1986-02-11 Divided-bed fluid filter

Publications (3)

Publication Number Publication Date
GB8603331D0 GB8603331D0 (en) 1986-03-19
GB2186210A true GB2186210A (en) 1987-08-12
GB2186210B GB2186210B (en) 1990-04-04

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ID=10592858

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8603331A Expired - Lifetime GB2186210B (en) 1986-02-11 1986-02-11 Divided-bed fluid filter

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1459784A (en) * 1973-04-26 1976-12-31 Croftshaw Engs Ltd Adsorber apparatus
GB2076690A (en) * 1980-05-22 1981-12-09 Marshall D A G Divided-bed carbon filter
GB2111851A (en) * 1978-11-16 1983-07-13 Century 21 Pollution Control Gas cleaning system
GB2148736A (en) * 1983-10-14 1985-06-05 Marshall D A G Activated-carbon fluid filter
GB2149318A (en) * 1983-10-14 1985-06-12 Marshall D A G Activated-carbon fluid filter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1459784A (en) * 1973-04-26 1976-12-31 Croftshaw Engs Ltd Adsorber apparatus
GB2111851A (en) * 1978-11-16 1983-07-13 Century 21 Pollution Control Gas cleaning system
GB2076690A (en) * 1980-05-22 1981-12-09 Marshall D A G Divided-bed carbon filter
GB2148736A (en) * 1983-10-14 1985-06-05 Marshall D A G Activated-carbon fluid filter
GB2149318A (en) * 1983-10-14 1985-06-12 Marshall D A G Activated-carbon fluid filter

Also Published As

Publication number Publication date
GB2186210B (en) 1990-04-04
GB8603331D0 (en) 1986-03-19

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PE20 Patent expired after termination of 20 years

Effective date: 20060210