US3823677A - Gravity flow incinerator - Google Patents

Gravity flow incinerator Download PDF

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Publication number
US3823677A
US3823677A US00315742A US31574272A US3823677A US 3823677 A US3823677 A US 3823677A US 00315742 A US00315742 A US 00315742A US 31574272 A US31574272 A US 31574272A US 3823677 A US3823677 A US 3823677A
Authority
US
United States
Prior art keywords
grate
incinerator
grates
refuse
vertical
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
US00315742A
Other languages
English (en)
Inventor
E Polsak
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.)
Combustion Engineering Inc
Original Assignee
Combustion Engineering 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 Combustion Engineering Inc filed Critical Combustion Engineering Inc
Priority to US00315742A priority Critical patent/US3823677A/en
Priority to CA178,832A priority patent/CA984228A/en
Priority to ES421394A priority patent/ES421394A1/es
Priority to JP48138913A priority patent/JPS5233427B2/ja
Priority to IT32123/73A priority patent/IT1003265B/it
Application granted granted Critical
Publication of US3823677A publication Critical patent/US3823677A/en
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
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
    • F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/22—Waste papers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/26—Biowaste
    • F23G2209/261—Woodwaste
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/28—Plastics or rubber like materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2900/00—Special features of, or arrangements for incinerators
    • F23G2900/52001—Rotary drums with co-current flows of waste and gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2900/00—Special features of, or arrangements for incinerators
    • F23G2900/53801—Multi-hearth furnaces with vertical axis

Definitions

  • the gravity flow incinerator of the present invention includes an upright vertical chamber having a plurality of vertically spaced grates, each having walls inclined downwardly towards a central opening therein.
  • FIG. 1 is a cross sectional side view of an incinerator arrangement constructed in accordance with the invention.
  • FIG. 2 is a sectional view taken on lines 22 of FIG. 1.
  • DESCRIPTION OF THE PREFERRED EMBODIMENT 18 and 20 are progressively smaller from the upper-' most grate to the lowermost grate.
  • a pilot burner 22 positioned beneath the lowest grate is used for initial combustion of the solid wastes, and can also be used for re-ignition if the fire goes out for some reason.
  • the residue falling through opening 20 in the lowest grate l4 slides down an inclined chute 24 into a rotary incinerator 26.
  • the combustion gases are exhausted from the .rotary incinerator through exhaust passage 28.
  • an afterburner, wet scrubber, and other gas cleaning equipment can and usually will be contained in the exhaust system to. minimize air pollution.
  • the exhaust duct 30 leading from the upper portion of the vertical incinerator discharges combustion gases into the exhaust system of the rotary incinerator 26, so that duplication of gas cleaning equipment is not necessary.
  • Combustion air is supplied to each of the grates 14 in the vertical incinerator by way of a plurality of pas- 2 sages '36 which extend radially through each grate (FIG. 2).
  • the air is discharged into each of the central openings l6, l8 and 20.
  • Air fan 32 supplies air to the passages 36 through manifold ducts 34 which encircle the incinerator 10 at each grate elevation.
  • an incineration system which has a number of advantages.
  • the series of grates having progessively smaller openings-allows wastes to fall by gravity from one level to the next as particle sizes are reduced by combustion.
  • the structure forms an automatic self-regulating feed mechanism from one grate level to the next by which the combustion rate governs the rate of flow of waste through the openings in the grates.
  • Periodic supply of material from the hopper 12 is provided by. opening gate 13.
  • Good agitation of the burning waste is provided as the wastes fall, tumble, and break apart as it drops from one grate to the next. This exposes new surfaces' of the waste material to the oxygen laden air introduced to the central opening of each g'rate,resulting in burning at accelerated rates.
  • the air in passing through the refractory grates also performs the function of cooling these grates 14.
  • the vertical distance between grates is sufficient to create drop zones,
  • the present incinerator has both a low initial installation cost and a low maintenace cost per pound of refuse incinerated.
  • the small sized particles of trash and refuse such as cardboard, paper, plastics and'small wood items will be burned in the vertical incinerator.
  • Large items, such as magazines or paper wired into bundles, and large wooden members that require long combustion times, will be only partially combusted in the vertical incinerator. The burning process of these items will be com- .pleted in the rotary incinerator.
  • a vertical incinerator for burning refuse including vertical wall means forming an upright chamber, a plurality of vertically spaced grates positioned within the chamber, each grate having an inclined upper surface which extends downwardly from its outer edge, the entire outer periphery thereof being secured to the vertical wall means around its entire periphery, each grate having a central opening therein, .the openings of the grates being progressively smaller from the uppermost grate to the lowermost grate, the openings in all of the grates being sufficiently small so that some refuse becomes wedged within the opening of each grate, and is supported 'bythe grate until sufficient combustion takes place to reduce the refuse particle size sufficiently to allow it to drop onto the next lower grate, each of the grates being spaced vertically an amount which allows tumbling and agitation of the refuse as it falls to a lower grate, thereby increasing the combustion efficiency.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Gasification And Melting Of Waste (AREA)
US00315742A 1972-12-15 1972-12-15 Gravity flow incinerator Expired - Lifetime US3823677A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US00315742A US3823677A (en) 1972-12-15 1972-12-15 Gravity flow incinerator
CA178,832A CA984228A (en) 1972-12-15 1973-08-15 Gravity flow incinerator
ES421394A ES421394A1 (es) 1972-12-15 1973-12-12 Perfeccionamientos introducidos en los incineradores para la eliminacion de desperdicios y desechos.
JP48138913A JPS5233427B2 (OSRAM) 1972-12-15 1973-12-14
IT32123/73A IT1003265B (it) 1972-12-15 1973-12-27 Inceneritore a gravita

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00315742A US3823677A (en) 1972-12-15 1972-12-15 Gravity flow incinerator

Publications (1)

Publication Number Publication Date
US3823677A true US3823677A (en) 1974-07-16

Family

ID=23225852

Family Applications (1)

Application Number Title Priority Date Filing Date
US00315742A Expired - Lifetime US3823677A (en) 1972-12-15 1972-12-15 Gravity flow incinerator

Country Status (5)

Country Link
US (1) US3823677A (OSRAM)
JP (1) JPS5233427B2 (OSRAM)
CA (1) CA984228A (OSRAM)
ES (1) ES421394A1 (OSRAM)
IT (1) IT1003265B (OSRAM)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3918375A (en) * 1974-03-15 1975-11-11 Sanki Eng Co Ltd Device for eliminating an adherent substances in the industrial waste incinerator
US3939781A (en) * 1974-05-30 1976-02-24 Ecologenics Corporation Incinerator, incineration system and method
US4156394A (en) * 1976-11-29 1979-05-29 Kernforschungs Anlage Julich GmbH Method and apparatus for thermally economical incineration of waste
US4233024A (en) * 1978-11-20 1980-11-11 Plass Vernon F Apparatus for destructive distillation of cellulosic materials
US4280417A (en) * 1979-11-28 1981-07-28 Bruun & Sorensen Ab Incineration plant
US4298560A (en) * 1978-11-20 1981-11-03 Plass Vernon F Method of manufacturing a grate
US4395958A (en) * 1981-12-21 1983-08-02 Industronics, Inc. Incineration system
US4424755A (en) 1982-09-30 1984-01-10 Industronics, Inc. Incineration system having cyclonic oxidation chamber
EP1219897A1 (en) * 2001-01-02 2002-07-03 Moriguchi, Kei Heating furnace
US6655304B1 (en) 1999-05-21 2003-12-02 Barlow Projects, Inc. Mass fuel combustion system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US895129A (en) * 1906-09-17 1908-08-04 William H Van Doren Garbage-incinerator.
US1091837A (en) * 1911-05-23 1914-03-31 George W Haskin Refuse disposal and reduction plant.
US1235918A (en) * 1914-08-27 1917-08-07 Frank A Nieberding Incinerator.
US1776914A (en) * 1928-04-25 1930-09-30 Adrian E Langford Garbage incinerator
US1861135A (en) * 1928-12-03 1932-05-31 Harry R Riley Furnace construction
US1957921A (en) * 1930-12-15 1934-05-08 John C White Furnace
US3489527A (en) * 1965-04-08 1970-01-13 Henry J Cates Jr Mixing chamber for the end of an incinerator rotary kiln

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US895129A (en) * 1906-09-17 1908-08-04 William H Van Doren Garbage-incinerator.
US1091837A (en) * 1911-05-23 1914-03-31 George W Haskin Refuse disposal and reduction plant.
US1235918A (en) * 1914-08-27 1917-08-07 Frank A Nieberding Incinerator.
US1776914A (en) * 1928-04-25 1930-09-30 Adrian E Langford Garbage incinerator
US1861135A (en) * 1928-12-03 1932-05-31 Harry R Riley Furnace construction
US1957921A (en) * 1930-12-15 1934-05-08 John C White Furnace
US3489527A (en) * 1965-04-08 1970-01-13 Henry J Cates Jr Mixing chamber for the end of an incinerator rotary kiln

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3918375A (en) * 1974-03-15 1975-11-11 Sanki Eng Co Ltd Device for eliminating an adherent substances in the industrial waste incinerator
US3939781A (en) * 1974-05-30 1976-02-24 Ecologenics Corporation Incinerator, incineration system and method
US4156394A (en) * 1976-11-29 1979-05-29 Kernforschungs Anlage Julich GmbH Method and apparatus for thermally economical incineration of waste
US4233024A (en) * 1978-11-20 1980-11-11 Plass Vernon F Apparatus for destructive distillation of cellulosic materials
US4298560A (en) * 1978-11-20 1981-11-03 Plass Vernon F Method of manufacturing a grate
US4280417A (en) * 1979-11-28 1981-07-28 Bruun & Sorensen Ab Incineration plant
US4395958A (en) * 1981-12-21 1983-08-02 Industronics, Inc. Incineration system
US4424755A (en) 1982-09-30 1984-01-10 Industronics, Inc. Incineration system having cyclonic oxidation chamber
US6655304B1 (en) 1999-05-21 2003-12-02 Barlow Projects, Inc. Mass fuel combustion system
EP1219897A1 (en) * 2001-01-02 2002-07-03 Moriguchi, Kei Heating furnace

Also Published As

Publication number Publication date
CA984228A (en) 1976-02-24
ES421394A1 (es) 1976-05-01
JPS5233427B2 (OSRAM) 1977-08-27
JPS4989355A (OSRAM) 1974-08-27
IT1003265B (it) 1976-06-10

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