Combustion apparatus

{
  "publication_number": "US11242989B2",
  "country": "US",
  "kind": "B2",
  "title": "Combustion apparatus",
  "abstract": "Disclosed herein is a combustion apparatus which comprises a chamber having a apertured rotatable tubular auger mounted between end walls of the chamber to convey particulate material from the region of the chamber proxi-mate the feed inlet to the combustion gas outlet and a blower connected to the opposite end of the tubular auger and configured to blow gas into the bore of the auger and out through the apertures into the chamber.",
  "claims": [
    "1. A combustion apparatus comprising: a chamber having at least one side wall extending between first and second end walls, a feed inlet for combustible material extending through the side wall, a combustion gas outlet through the side wall distal of the feed inlet, an apertured rotatable tubular auger mounted between the first and second end walls and extending along the whole length of the chamber to convey particulate material from the region of the chamber proximate the feed inlet to the combustion gas outlet, a blower connected to an end of the tubular auger and configured to blow gas into a bore of the auger and out through the apertures into the chamber, and a primary ignition device arranged in the side wall of the chamber between the feed inlet and the combustion gas outlet, the primary ignition device comprising an oil or gas burner, an igniter and a gas inlet, wherein the auger comprises flights which are interrupted by gaps.",
    "2. The combustion apparatus according to claim 1, wherein there are a plurality of apertured rotatable tubular augers with each one having a bore connected to a blower.",
    "3. The combustion apparatus according to claim 1, wherein a first partial partition is disposed internally between the primary ignition device and the feed inlet, the first partition being configured to control the flow of material through the chamber.",
    "4. The combustion apparatus according to claim 1, wherein a second partial partition is disposed between the combustion gas outlet and the primary ignition device, the second partial partition being configured to control the flow of material through the chamber.",
    "5. The combustion apparatus according to claim 1, wherein a combustion ash outlet is arranged in the side wall of the chamber opposite the combustion gas outlet.",
    "6. The combustion apparatus according to claim 5, wherein there are one or more apertures in the auger within the gaps and the one or more apertures within the gaps are directed towards the end of the apparatus where the feed inlet is situated.",
    "7. The combustion apparatus according to claim 1, wherein the end of the auger opposite the blower comprises a tap for controlling gas from the blower out of the bore of the auger.",
    "8. The combustion apparatus according to claim 1, wherein the side wall of the chamber comprises a plurality of apertures, with each aperture being in fluid communication with a secondary gas blower.",
    "9. The combustion apparatus according to claim 1, wherein the feed inlet for combustible material is arranged around the midpoint of the chamber between the two ends, wherein the tubular auger comprises flights configured to direct the combustible material in opposite directions towards the two ends away from the feed inlet, wherein there are two combustion gas outlets through the side wall distal of the feed inlet, one at each end of the chamber in the side wall of the chamber, and wherein there are two primary ignition devices either side of the feed inlet.",
    "10. The combustion apparatus according to claim 9, wherein there are two combustion ash outlets arranged in the side wall of the chamber each one opposite each combustion gas outlet."
  ],
  "description_excerpt": "The present invention relates to a combustion apparatus suitable for combusting waste materials.\n\nThe generation of waste is a great burden to society and infrastructure. Governments are being required to manage both domestic and commercial waste on massive scales in a manner that is sustainable over the long term. The task of dealing with the vast variety of materials in an efficient manner is therefore a challenging one.\n\nOne of the main problems when handling domestic and commercial waste materials is the generation of toxic and/or hazardous compounds which originate from the materials themselves and/or residual compounds contained within the waste. Initial processing of these materials liberates these compounds and can facilitate secondary reactions which produce further harmful compounds. This problem is exemplified when handling waste construction industry fibre board. During the initial processing the fibre board is broken down into small pieces, thereby exposing the harmful adhesives and preservatives contained within the board products.\n\nThe problems associated with burning domestic and commercial waste material are also exacerbated by dampness in the materials. Any moisture reduces the temperature of combustion and therefore changes the mixture of gasses which are liberated. Reducing the temperature also makes the burning process inefficient and increases the ash deposits left at the end.\n\nConventional management schemes involve deposition within land-fill sites. This is not sustainable in the long term and has environmental consequences.",
  "cpc": [
    "F23G 5/444",
    "B65G 33/30",
    "F23G 2203/8013",
    "F23G 2205/121",
    "F23G 2207/30",
    "F23G 5/00",
    "F23G 5/002",
    "F23G 5/04",
    "F23G 5/12",
    "F23G 5/50",
    "F23G 7/003",
    "F23G 7/105",
    "F23K 2203/202",
    "F23K 3/14",
    "F23L 15/00",
    "F23L 3/00",
    "F23L 5/02",
    "F23L 9/06",
    "Y02E 20/34"
  ],
  "ipc": [
    "B65G 33/30",
    "F23G 5/00",
    "F23G 5/04",
    "F23G 5/12",
    "F23G 5/44",
    "F23G 5/50",
    "F23L 15/00",
    "F23L 3/00",
    "F23L 5/02",
    "F23L 9/06"
  ],
  "assignees": [
    "Harris Multi Jet Burner Ltd"
  ],
  "inventors": [
    "Michael Harris",
    "Michael Harris, Jr.",
    "Glenn Harris"
  ],
  "filing_date": "2019-09-13",
  "publication_date": "2022-02-08",
  "grant_date": "2022-02-08",
  "priority_date": "2018-09-28",
  "application_number": "US-201917280484-A",
  "family_id": "68296517",
  "cited_by_count": 2,
  "citations": [
    "US3942455A",
    "US4231304A",
    "US4009667A",
    "GB2056033A",
    "US4331084A",
    "US4299177A",
    "JPH0814518A",
    "KR20080093485A",
    "US20090205252A1",
    "WO2012026756A2",
    "WO2013088478A1",
    "US9052109B1"
  ]
}