WO1988004752A1 - Ecrans a trous pour cylindre de combustion - Google Patents

Ecrans a trous pour cylindre de combustion Download PDF

Info

Publication number
WO1988004752A1
WO1988004752A1 PCT/US1987/002049 US8702049W WO8804752A1 WO 1988004752 A1 WO1988004752 A1 WO 1988004752A1 US 8702049 W US8702049 W US 8702049W WO 8804752 A1 WO8804752 A1 WO 8804752A1
Authority
WO
WIPO (PCT)
Prior art keywords
combustor
drum
pipes
openings
cylindrical surface
Prior art date
Application number
PCT/US1987/002049
Other languages
English (en)
Inventor
Chadwell O'connor
Original Assignee
Westinghouse Electric Corporation
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 Westinghouse Electric Corporation filed Critical Westinghouse Electric Corporation
Publication of WO1988004752A1 publication Critical patent/WO1988004752A1/fr
Priority to KR1019880700968A priority Critical patent/KR890700213A/ko

Links

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
    • F23G5/20—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having rotating or oscillating drums
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/08—Cooling thereof; Tube walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2203/00—Furnace arrangements
    • F23G2203/20—Rotary drum furnace
    • F23G2203/205—Rotary drum furnace with water-cooled wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2203/00—Furnace arrangements
    • F23G2203/20—Rotary drum furnace
    • F23G2203/207—Rotary drum furnace with air supply ports in the sidewall

Definitions

  • This invention relates generally to rotary kilns or drums for burning waste and more particularly concerns protecting such installations from molten metal occurring as a result of the burning.
  • Another object of the invention is to provide for control of molten aluminum in a combustor drum in an economical fashion, both initially and without continuous maintenance requirements.
  • Figure 1 is a fragmentary partially sectioned elevation of a structure for burning MSW including a combustor embodying the invention
  • Figure 2 is a fragmentary section aken approxi ⁇ mately along 2-2 in Fig. 1;
  • FIG. 3 is a fragmentary perspective of a portion of the end wall of the drum shown in Fig. 2. While the invention will be described in connec ⁇ tion with a preferred embodiment, it will be understood that I do not intend to limit the invention to that embodi ⁇ ment. On the contrary, I intend to cover all alternatives, modifications and equivalents included within the spirit and scope of the invention as defined by the appended claims.
  • a structure for burning material such as MSW and including a rotary combustor drum 10 with a wind box 11 for delivering air to the combustor 10, a furnace 12, and an arrangement 13 for feeding combustible material into the combustor.
  • the combustor 10 is formed of a plurality of water cooled pipes 14 joined together by perforated strips 15 welded between the pipes to define a cylinder 16.
  • the perfora ⁇ tions of the strips 15 consist of a plurality of holes or openings 17 running the length of the cylinder 16.
  • the pipes 14 end in annular header pipes 18 and 19 at each end of the cylinder.
  • a rotary joint 20 feeds water to, and removes steam and hot water from, the combus ⁇ tor 10 through concentric pipes 21.
  • Water is directed to the header pipe 19, and thence to the combustor pipes 14, and steam from the header pipe 18 is carried back through certain ones of the combustor pipes 14 that do not carry input water and which communicate directly with the steam portion of the pipes 21.
  • the combustor 10 is mounted for rotation about the axis of the cylinder 16 on support rollers 23 with the axis being tilted so that the cylinder has a high end and a low end.
  • the combustor is slowly rotated through a sprock ⁇ et 24 in the direction of the arrows.
  • the furnace 12 is defined by a plurality of boiler pipes 27 having a side opening for the combustor and a bottom opening 28 leading to chutes 29 for ashes and nonburnable materials.
  • the arrangement 13 for feeding combustible material includes a chamber 31, covered by a door 32, beneath the level of a floor 33 from which materi ⁇ al can be dumped when the door 32 is moved clear.
  • a reciprocating ram 34 feeds material into the upper open end of the combustor cylinder 16.
  • shallow walls 40 are disposed about the sides and upper ends of the holes 17 so as to prevent molten material, typically aluminum when the combustor is used to burn MSW, from flowing or dripping through the holes and into the wind box 11.
  • the ends of the walls 40 are rounded so that material flowing from the high to the low end of the combustor is not blocked and its movement arrested.
  • the absence of any wall on the lower ends of the openings 17 minimizes blockage and avoids creation of a recess defined by the walls in which material could col ⁇ lect. Molten metal, such as aluminum, will continue to flow past the walls 40 downward in the cylinder 16 and eventually out of the lower end of the combustor into the ash chute 29.
  • the walls 24 themselves are simple metal forms welded in place. Those familiar with this art will appre ⁇ ciate that the walls 40 can be formed and mounted in place with little increased cost in the manufacture of the combustor.
  • the walls 40 perform a further function in supporting the material being burned in a slightly spaced relationship from what could otherwise be an essentially smooth inner cylindrical surface.
  • the advantages of this function are set forth in U.S. Patent No. 4,226,584, issued October 7, 1980.
  • a kind of composite embodiment would be to use round holes for the opening 17 and to form the walls 40 from short lengths of tubing fitted into the holes, the tubing being slotted on the lower or downstream side to define the shallow U-shaped configuration illustrated. It can readily be seen that substantial mainte ⁇ nance problems could result in having molten aluminum fall through the openings 17 into the wind box 11 and related structure. The walls 40 effectively prevent that from happening in an economical fashion and hence avoid much more expensive maintenance problems.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

La chambre de combustion décrite (10) est formée de plusieurs conduits (14) refroidis par eau, qui sont fixés, de façon à former un cylindre (16), par des éléments (15) définissant plusieurs trous (17) entre les conduits (14). Le cylindre (16) est monté en vue de sa rotation avec un certain angle, des parois basses en forme de U (40) entourant les côtés et les extrémités supérieures des trous (17), de sorte que l'aluminium qui fond par suite de l'action du matériau en combustion dans le cylindre (16) est dirigé autour des trous (17), pendant que ce matériau s'écoule jusqu'à l'extrémité inférieure du cylindre (16).
PCT/US1987/002049 1986-12-15 1987-08-20 Ecrans a trous pour cylindre de combustion WO1988004752A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019880700968A KR890700213A (ko) 1986-12-15 1988-08-11 드럼개구시일드를 구비한 연소기

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US942,567 1978-09-15
US94256786A 1986-12-15 1986-12-15

Publications (1)

Publication Number Publication Date
WO1988004752A1 true WO1988004752A1 (fr) 1988-06-30

Family

ID=25478284

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1987/002049 WO1988004752A1 (fr) 1986-12-15 1987-08-20 Ecrans a trous pour cylindre de combustion

Country Status (4)

Country Link
KR (1) KR890700213A (fr)
ES (1) ES2008386A6 (fr)
PT (1) PT86352B (fr)
WO (1) WO1988004752A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989003241A1 (fr) * 1987-10-16 1989-04-20 Reinhard Fischer Procede d'elimination de dechets par combustion enrichie avec de l'oxygene

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE490000C (de) * 1930-01-28 Arno Andreas Drehrohrofen zum Brennen von Zement, Kalk u. dgl.
US3822651A (en) * 1973-09-04 1974-07-09 D Harris Water cooled kiln for waste disposal
DE2428961A1 (de) * 1973-06-20 1975-01-16 Bouillet Laurent Sa Vorrichtung und verfahren zum thermischen verarbeiten von muell, abfaellen und/oder aehnlichen produkten
US3882801A (en) * 1973-11-16 1975-05-13 Manitra Ets Incinerator for domestic and industrial solid, semi-liquid or liquid waste

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE490000C (de) * 1930-01-28 Arno Andreas Drehrohrofen zum Brennen von Zement, Kalk u. dgl.
DE2428961A1 (de) * 1973-06-20 1975-01-16 Bouillet Laurent Sa Vorrichtung und verfahren zum thermischen verarbeiten von muell, abfaellen und/oder aehnlichen produkten
US3822651A (en) * 1973-09-04 1974-07-09 D Harris Water cooled kiln for waste disposal
US3882801A (en) * 1973-11-16 1975-05-13 Manitra Ets Incinerator for domestic and industrial solid, semi-liquid or liquid waste

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989003241A1 (fr) * 1987-10-16 1989-04-20 Reinhard Fischer Procede d'elimination de dechets par combustion enrichie avec de l'oxygene

Also Published As

Publication number Publication date
PT86352B (pt) 1993-08-31
KR890700213A (ko) 1989-03-10
ES2008386A6 (es) 1989-07-16
PT86352A (pt) 1989-01-17

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