US3810431A - Recirculation of gases generated in ash pit - Google Patents

Recirculation of gases generated in ash pit Download PDF

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Publication number
US3810431A
US3810431A US00345935A US34593573A US3810431A US 3810431 A US3810431 A US 3810431A US 00345935 A US00345935 A US 00345935A US 34593573 A US34593573 A US 34593573A US 3810431 A US3810431 A US 3810431A
Authority
US
United States
Prior art keywords
chamber
pyrolyzing
ash receiving
receiving chamber
air
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.)
Expired - Lifetime
Application number
US00345935A
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English (en)
Inventor
L Lavely
N Hazzard
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.)
Enercon Systems Inc
Original Assignee
Air Preheater Co Inc
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 Air Preheater Co Inc filed Critical Air Preheater Co Inc
Priority to US00345935A priority Critical patent/US3810431A/en
Priority to CA194,264A priority patent/CA1000118A/en
Priority to JP49033172A priority patent/JPS5234864B2/ja
Priority to ES424733A priority patent/ES424733A1/es
Priority to AU67274/74A priority patent/AU481456B2/en
Application granted granted Critical
Publication of US3810431A publication Critical patent/US3810431A/en
Assigned to ENERCON SYSTEMS, INC. reassignment ENERCON SYSTEMS, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AIR PREHEATER COMPANY, INC. THE
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage

Definitions

  • This invention therefore relates to an incinerator for trash, garbage and waste of all types that includes an enclosed primary or pyrolyzing chamber, a subjacent ash receiving chamber, and an afterburner that is downstream from the primary combustion chamber.
  • Duct means connect the ash receiving chamber to a duct supplying underfire air to the pyrolyzing chamber whereby smoke, dust and fumes of all types generated in the ash receiving chamber are directed back into the pyrolyzing chamber under the bed of burning waste to be subjected to continued high temperature and to a filtering action by the fine ash and burning coals. After being subjected to a filter action by the mass of waste in the pyrolyzing chamber, the fumes from the ash receiving chamber continue to be subjected to high incinerating temperatures of the pyrolyzing chamber and the afterburner before being exhausted to the atmosphere.
  • FIG. 1 shows a sectional elevation of my invention
  • FIG. 2 shows a modification wherein exhaust gas from the ash receiving chamber isechausted to the inlet of the air supply fan.
  • the reference number 12 defines a housing enclosing a pyrolyzing chamber 14 that includes a loading door 16 for loading ply passageway 28 is preferably provided with a venturi' a charge of waste material or trash thereinand an outlet opening 118 through which gases generated therein are exhausted.
  • a duct 20 connected to the outlet opening 18 is sized to include an afterbumer 22 that exhausts to the atmosphere through a stack 24.
  • a source of combustion air comprising a fan 26 exhausts through passageway 28 to the pyrolyzing chamber 14 and through a passageway 32 to the afterburner chamber.
  • Suitable control valves 34 and 36 in their respective flow passageways properly control the flow of air necessary for adequate pyrolyzation in chamber 14 and complete combustion of the gas in chamber 22.
  • a source of fiiel is provided to the afterburner 22 through supply line 38 having a suitable control valve 42 therein whereby sufficient fuel is provided to maintain a temperature within the afterburner at all times at what is considered the optimum for combustion of all gases and fumes.
  • valves 34, 36 and 42 may all be controlled manually or in response to a controller1(not shown) set to respond to temperatureswithin the afterburner in a manner well known and disclosed in U.S. Pat. No. 3,491,707 of Jan. 27, 1970.
  • the bottom of the chamber 14 is. provided with a laterally movable plate 44 that includes an aperture 46 therein. Lateral movement of said apertured plate permits alignment of chamber 14 and aperture 46 whereby the chamber 14 may quickly drop its contents to a subjacent ash receiving chamber 48 having a conventional ash clean-out door 52 whereby an accumulation of ashes or residue maybe removed for ultimate disposal.
  • ash and other residual matter is dropped through opening 46 from pyrolyzation chamber 14 to' ash receiving chamber 48, such agitation will produce a cloud of particulate matter and smoke including fumes and fine particles of airborne ash.
  • This smoke and ash will rise and subsequently be exhausted from chamber 48 through passageway 52 back to duct 28 that supplies the underfire air to the pyrolyzing chamber 14.
  • the passageway 52 is provided with a suitable valving means 54 that may be closed completely to provide for the isolation of chamber 48 from chamber 14.
  • the air supor other from of restriction 58 that, when air from fan 26 is forced therethrough, will have a suction effect upon chamber 43 and thus serve as a smoke ejector therefor.
  • a similar effect may be produced by extending duct 52 to the inlet of fan 26 in the manner shown by FIG.
  • chamber 14 As the airborne ash and fumes from chamber 48 are directed into chamber 14 they are filtered upward through the bed of burning coals and packed waste to strip the particulate matter from the gas. Moreover, the velosity of airflow through chamber 14 is maintained below 9 10 ft./sec. whereby there is little entrainment of particulate matter therein and only substantially dustfree air is exhausted to the afterburner.
  • An incinerator for burning combustible waste material that comprises a pyrolyzing chamber having a loading opening for the admission of waste material and an outlet opening for the exhaust of gases generated therein, an outlet duct including an afterburner chamber therein connected to said outlet opening, a source of air for the pyrolyzing chamber, a passageway supplying air from said source and exhausting into the lower portion of the pyrolyzing chamber to provide a source of combustion air beneath the charge of waste material therein, an ash receiving chamber isolated from the pyrolyzing chamber, means moving the ash from the pyrolyzing chamber to the ash receiving chamber, and duct means connecting the ash receiving chamber to the pyrolyzing chamber to permit fumes generated in the ash receiving chamber to circulate back to the pyrolyzing chamber and filter through the waste material therein before being exhausted to the afterburner.
  • An incinerator as defined in claim 2 including a restriction in the passageway supplying air from said source to the pyrolyzing chamber to produce an area of low pressure, and means connecting the ash receiving chamber to the pyrolyzing chamber at said area of low pressure to thus produce a continuous aspiration effect upon the fumes of said ash receiving chamber when air is flowing through said duct.
  • An incinerator for burning combustible waste that comprises a pyrolyzing chamber having a loading opening for the admission of a charge of waste material and an outlet opening for the exhaust of gases generated therein, an outlet duct including an afterburner chamber therein connected to said outlet opening, a source of combustion air for the pyrolyzing chamber, an air supply passageway supplying air from said source to the lower portion of said pyrolyzing chamber, an ash receiving chamber subjacent the pyrolyzing chamber, closure means movable between open and closed positions separating the pyrolyzing chamber from the ash receiving chamber, means actuating the movable closure means to interconnect the pyrolyzing chamber with the ash receiving chamber, and duct means connecting the ash receiving chamber with the passageway supplying air to the pyrolyzing chamber whereby smoke exhausting from the ash receiving chamber is introduced into the lower portion of the pyrolyzing chamber and filtered through the charge of waste therein before being exhausted to the afterburner.
  • An incinerator as defined in claim 4 including a venturi-like restriction in the air supply passageway, and means linking said venturi-like restriction to the duct from the ash receiving chamber to subject the fumes therein to suction produced by the flow of combustion air through the venturi.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Gasification And Melting Of Waste (AREA)
US00345935A 1973-03-29 1973-03-29 Recirculation of gases generated in ash pit Expired - Lifetime US3810431A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US00345935A US3810431A (en) 1973-03-29 1973-03-29 Recirculation of gases generated in ash pit
CA194,264A CA1000118A (en) 1973-03-29 1974-03-06 Recirculation of gases generated in ash pit
JP49033172A JPS5234864B2 (ja) 1973-03-29 1974-03-26
ES424733A ES424733A1 (es) 1973-03-29 1974-03-28 Perfeccionamientos en los encineradores para desperdicios yanalogos sinparrilla.
AU67274/74A AU481456B2 (en) 1973-03-29 1974-03-28 Recirculation of gases generated in ash pit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00345935A US3810431A (en) 1973-03-29 1973-03-29 Recirculation of gases generated in ash pit

Publications (1)

Publication Number Publication Date
US3810431A true US3810431A (en) 1974-05-14

Family

ID=23357170

Family Applications (1)

Application Number Title Priority Date Filing Date
US00345935A Expired - Lifetime US3810431A (en) 1973-03-29 1973-03-29 Recirculation of gases generated in ash pit

Country Status (4)

Country Link
US (1) US3810431A (ja)
JP (1) JPS5234864B2 (ja)
CA (1) CA1000118A (ja)
ES (1) ES424733A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162655A (en) * 1978-03-13 1979-07-31 Dekalb Agresearch, Inc. Heat producing device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5964228U (ja) * 1982-10-25 1984-04-27 豊田合成株式会社 ゴム状弾性体成形用金型

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1995893A (en) * 1931-12-03 1935-03-26 Decarie Incinerator Corp Incineration
US2121661A (en) * 1936-08-14 1938-06-21 Nichols Eng & Res Corp Process and apparatus for drying and burning moist materials
US2183463A (en) * 1938-08-12 1939-12-12 Henry H Moreton Method and apparatus for destroying sewage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1995893A (en) * 1931-12-03 1935-03-26 Decarie Incinerator Corp Incineration
US2121661A (en) * 1936-08-14 1938-06-21 Nichols Eng & Res Corp Process and apparatus for drying and burning moist materials
US2183463A (en) * 1938-08-12 1939-12-12 Henry H Moreton Method and apparatus for destroying sewage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162655A (en) * 1978-03-13 1979-07-31 Dekalb Agresearch, Inc. Heat producing device

Also Published As

Publication number Publication date
AU6727474A (en) 1975-10-02
CA1000118A (en) 1976-11-23
JPS5234864B2 (ja) 1977-09-06
JPS49127482A (ja) 1974-12-06
ES424733A1 (es) 1976-06-16

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