Compact cyclone filter train for radiological and hazardous environments

{
  "publication_number": "US5743925A",
  "country": "US",
  "kind": "A",
  "title": "Compact cyclone filter train for radiological and hazardous environments",
  "abstract": "A compact cyclone filter train for the removal of hazardous and radiologi particles from a gaseous fluid medium which permits a small cyclone separator to be used in a very small space envelope due to the arrangement of the filter housing adjacent to the separator with the cyclone separator and the filters mounted on a plate. The entire unit will have a hoist connection at the center of gravity so that the entire unit including the separator, the filters, and the base can be lifted and repositioned as desired.",
  "claims": [
    "1. A compact, single unit, readily moveable, cyclone filter train, adapted for decontaminating radiological material in confined areas, and capable of being remotely controlled, comprising: a) a base, b) a cyclone filter supported vertically on said base having a bottom, a top and cylindrical and conical side walls, c) an air/gas inlet in one of said side walls, d) means in said bottom for securing a removable heavier particle waste receiving container, e) a waste receiving container sealably secured to said cyclone filter bottom, and adapted to be remotely replaceable, f) a gas plenum having horizontal and vertical components mounted on said top, g) said horizontal component extending laterally a short distance from said top, h) said vertical component extending vertically downwardly adjacent said cylindrical wall of said cyclone filter and connected to said base, i) said gas plenum supporting said cyclone filter vertically above said base, j) at least one filter housing mounted vertically on said vertical component of said gas plenum, sealably connected to the rear of said vertical plenum component and including means for removing and sealably receiving removable cartridge filter means, k) a first removable cartridge filter means in said at least one filter housing, l) gas outlet means for receiving gas from said at least one filter housing, and m) means associated with said filter train for measuring said filter means effectiveness.",
    "2. A compact cyclone filter train as in claim 1 and wherein: a) said plenum is \"7\" shaped.",
    "3. A compact cyclone filter train as in claim 1 and wherein: a) said plenum includes a lifting means.",
    "4. A compact cyclone filter train as in claim 3 and wherein: a) said lifting means is a hook eye.",
    "5. A compact cyclone filter train as in claim 3 and wherein: a) said lifting means is positioned on said horizontal component.",
    "6. A compact cyclone filter train as in claim 5 and wherein: a) said lifting means is located at the center of gravity of said compact cyclone filter train on said horizontal component.",
    "7. A compact cyclone filter train as in claim 1 and wherein: a) said at least one filter housing is connected to said base.",
    "8. A compact cyclone filter train as in claim 1 and wherein: a) said measuring means is a differential pressure gauge.",
    "9. A compact cyclone filter train as in claim 1 and including: a) a second filter housing mounted vertically on said at least one filter housing and sealably connected to said at least one filter housing and including means for removing and sealably receiving cartridge filter means.",
    "10. A compact cyclone filter train as in claim 9 and wherein: a) said second housing is connected to said base.",
    "11. A compact cyclone filter train as in claim 10 and wherein: a) said gas outlet means is connected to said second housing.",
    "12. A compact filter train as in claim 11 wherein said first removable cartridge filter means in said at least one filter housing is removable by remote control.",
    "13. A compact filter train as in claim 12 and including: a) a second removable cartridge filter means in said second filter housing, said second filter means is removable by remote control.",
    "14. A compact cyclone filter train as in claim 13 and wherein: a) said first removable cartridge filter means includes a roughing filter; and b) said second removable cartridge filter means is a very high efficiency fine particle filter.",
    "15. A compact cyclone filter train as in claim 14 and wherein: a) said filter train has a height and length approximately the same for positioning said filter train in minimal cubic space.",
    "16. A compact cyclone filter train as in claim 14 and wherein: a) said roughing filter removes heavier particles down to 4 microns and said very high efficiency filter removes up to 99.97% of the remaining particles down to 0.3 microns in size.",
    "17. A compact cyclone filter train as in claim 1 and wherein: a) said measuring means includes a plurality of differential pressure gauges.",
    "18. A compact cyclone filter train as in claim 17 and wherein: a) said plurality of differential pressure gauges include a differential pressure gauge on said plenum, and on at least said one filter housing.",
    "19. A compact cyclone filter train as in claim 9 and wherein: a) said measuring means includes a differential pressure gauge on said plenum, on said at least one filter housing and on said second filter housing."
  ],
  "description_excerpt": "This invention relates to cyclone filter trains and more particularly to a compact filter train which can be easily moved from one place to another and positioned in areas that are cramped for space. This invention was developed pursuant to a United States Department of Energy contract.\n\nAlthough there are known cyclone separators using filter trains, there is presently no available equipment which can be utilized in confined areas without producing more waste in the process. Such equipment that is available, requires substantial modification thereto by way of long and complicated ducting trains leading from the area being treated. In general, the present available equipment is not compact enough to be readily positioned in sealed off areas of minimal space.\n\nIt is an object of this invention to provide a movable filter train which includes cartridge filters and a cyclone in a single unit which can be readily transported from one place to another by a transport mechanism.\n\nIt is still a further object of this invention to provide a filter train which includes the cyclone separator and the filters mounted on a movable platform.\n\nYet a further object of this invention is to provide a compact filter system in which the cyclone and filters are mounted on a platform which has a lifting mechanism at the center of gravity to avoid tilting of the train during moving operations thereby avoiding unnecessary damage to the train during moving operations.\n\nIt is still a further object of this invention to provide a cyclone filter train which can be readily shipped in a compacted cube-like container.",
  "cpc": [
    "B01D 46/12",
    "B01D 45/16",
    "B01D 50/20",
    "Y10S 55/09",
    "Y10S 55/34"
  ],
  "ipc": [
    "B01D 45/16",
    "B01D 46/12",
    "B01D 50/00"
  ],
  "assignees": [
    "US Department of Energy"
  ],
  "inventors": [
    "Thomas R. Bench"
  ],
  "filing_date": "1996-04-10",
  "publication_date": "1998-04-28",
  "grant_date": "1998-04-28",
  "priority_date": "1996-04-10",
  "application_number": "US-63542196-A",
  "family_id": "24547724",
  "cited_by_count": 17,
  "citations": [
    "US3618302A",
    "US4062664A",
    "US4521234A",
    "US4695299A",
    "US4773922A",
    "US4820315A",
    "US4957520A",
    "US5244579A"
  ]
}