US3918375A - Device for eliminating an adherent substances in the industrial waste incinerator - Google Patents

Device for eliminating an adherent substances in the industrial waste incinerator Download PDF

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Publication number
US3918375A
US3918375A US489062A US48906274A US3918375A US 3918375 A US3918375 A US 3918375A US 489062 A US489062 A US 489062A US 48906274 A US48906274 A US 48906274A US 3918375 A US3918375 A US 3918375A
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United States
Prior art keywords
hollow rod
furnace wall
incinerator
adherent substances
injection nozzle
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Expired - Lifetime
Application number
US489062A
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English (en)
Inventor
Shuichi Hayakawa
Toru Hironaka
Yukinori Osada
Heihachiro Tamura
Toru Takayama
Shiro Saito
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.)
Sanki Engineering Co Ltd
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Sanki Engineering Co Ltd
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.)
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Publication date
Application filed by Sanki Engineering Co Ltd filed Critical Sanki Engineering Co Ltd
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Publication of US3918375A publication Critical patent/US3918375A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J1/00—Removing ash, clinker, or slag from combustion chambers

Definitions

  • This invention relates to an industrialwaste incinerator, and more particularly to a device for automatically eliminating adherent substances in the incomplete combustion state as stick inside a furnace wall.
  • This invention intends to provide a device which eliminates the substances adhering to the furnace wall of the incinerator.
  • a hollow rod is mounted along the lengthwise direction of the furnace at a position close to the wall of the incinerator, and the adherent substances of the furnace wall are taken off with a scraper by reciprocating the rod. Since the scraper reciprocates in contact with that part of the furnace wall to which the substances are prone to stick, the adherent substances on the whole area of the furnace wall as covered by the stroke length of the reciprocation are fully scraped off. If left as it is, the scraped block has its surface molten by the temperature of the interior of the furnace and adheres to the furnace wall again.
  • the adherent substances of the incomplete combustion are deposited substantially continuously on the furnace wall in a certain range from the charging side towards the inner part of the kiln type incinerator. A part of the adherent substances as lies on the charging side of the furnace is comparatively hard and need be taken off by the action of the scraper, whereas a part on the inner side is somewhat fragile.
  • the adherent substances on the furnace wall close to the charging side are taken off by the scraper and are rapidly burnt by the blast of the compressed air.
  • the adherent substances at the deeper part add to fragility gradually, and hence, they are almost blown away and burnt rapidly by the blast of the compressed air, to be made inorganic and to be gathered up by the scraper. In this way, it is possible to always keep good the combustion state in the incinerator and to perfectly burn up and dispose the industrial waste.
  • the principal object of this invention is to provide a device which 2 readily eliminates adherent substances on the wall of an industrial waste incinerator.
  • Another object of this invention is to provide a de vice which scrapes off adherent substances sticking to the wall of an incinerator, simultaneously blows them away by air blast and simultaneously subjects them 10- cally to rapid combustion, so that the adherent substances can be prevented from sticking again.
  • Still another object of this invention is to provide a device which eliminates adherent substances on the wall of an incinerator by blowing them away with compressed air and gathering them up with a scraper.
  • Yet another object of this invention is to provide a device which scrapes away adherent substances on the wall of an incinerator, thereafter rapidly burns them into inorganic substances and thereafter automatically discharges them, whereby the combustion state in the furnace is made good, and the incinerating disposal of the industrial waste is made effective.
  • FIG. 1 is a side view showing the mounting of the device of this invention on a furnace body
  • FIG. 2 is a plan view corresponding to FIG. 1;
  • FIG. 3 is an enlarged front view' taken in the direction of arrows of a line IIIIII in FIG. 1;
  • FIG. 4 is an enlarged longitudinal section of a hollow rod as taken in the direction of arrows of a line IV--IV in FIG. 3.
  • FIG. 1 is a side view showing the hind half part of the rotary kiln type incinerator and an adhesion preventing device mounted thereon, while FIG. 2 is a plan view showing the same.
  • the kiln type furnace l is installed in a manner to slightly incline with its fore end lowered.
  • a chute and a pushing-in device (not shown) for charging a material to-be-incinerated are provided at a rear opening portion 11 of the kiln type furnace.
  • the incinerator burns the material to-be-incinerated while slowly rotating the furnace body, and discharges the ash content from the fore end of the furnace body to the exterior of the incinerator.
  • a hollow rod 2 which is proximate to a furnace wall 10 and which can reciprocate in parallel to the wall surface is provided on the back side of the furnace l.
  • Scrapers 3 and 4 for removing adherent substances are mounted at the fore end and an intermediate part of the hollow rod 2, respectively.
  • a cylinder mechanism 5 is provided near the hind end of the hollow rod 2 and in parallel with the hollow rod, and the end part of the rod 6 is joined to the hind end of the hollow rod 2.
  • a reciprocating mechanism is constructed. It is also allowed to employ any other reciprocating mechanism in which, by way of example, the cylinder mechanism is replaced with a rack and pinion.
  • the hollow rod 2 is equipped therein with a pipe 7 for introducing compressed air, which pipe is joined to an air injection nozzle 8 provided near the fore end scraper 3.
  • a pipe 9 for supplying cooling water is also inserted in the hollow rod 2.
  • the air injection nozzle 8 may alternatively be disposed at the scraper 4 at the intermediate part of the rod. Further, the air injection nozzles may be disposed at both the fore end scraper and the intermediate scraper.
  • the scrapers 3 and 4 are arranged in proximity to the furnace wall 10 at an acute angle to the rotational direction thereof, and are adapted to take off the adherent substances on the wall surface.
  • the injection nozzle 8 is led from an end plate 12 of the hollow rod 2, it is bent into an L-shape, and it opens near the lower edge of the fore end scraper 3.
  • an end member 14 is secured through a flange portion 13, and it is covered with a cylindrical cap 15.
  • the cylindrical cap 15 has a bracket 16.
  • the rear end of the rod 6 of the reciprocating mechanism is fastened to a pin 17 at the front end of the bracket 16.
  • a pair of rings 18 and 19 are secured at an interval, and a ring member 20 secured to the periphery of the end member 14 is arranged between the rings 18 and 19.
  • the compressed air-introducing pipe 7 penetrates through the flange portion 13 and orthogonally turns substantially in the middle of the end member 14. It penetrates through the ring member 20 as well as the cylindrical cap 15. Then, it is joined to a compressed air source in the exterior.
  • a water feed port 21 communicating to a flexible hose is provided near the flange portion 13 of the hollow rod 2 and is joined to the pipe 9, while a water exhaust port 22 communicating to a flexible hose is provided at a position opposite to the water feed port 21.
  • the cooling water enters the pipe 9 from the water feed port 21, it flows into the hollow rod 2 from an open end of the pipe 9 near the front end of the hollow rod 2, and it passes through the interior of the hollow rod 2 as shown by an arrow in FIG. 4. After thus effecting cooling, it is discharged from the water exhaust port 22.
  • a shear pin hub 23 is secured to that part of the hollow rod 2 which is close to the water feed and exhaust ports 21 and 22.
  • An opposite flange 24 is locked by a shear pin 25.
  • the flange 24 is formed sidewards with a cylinder portion 26.
  • the hollow rod 2 is reciprocated straight by the guide of the guide rail 28 and the guide pin 27.
  • the lump or block adhereing to the furnace wall 10 is taken away by the scrapers 3 and 4. When the adherent matter becomes harder than is anticipated or any foreign matter sticks hard, it intrudes between the furnace wall 10 and the scraper 3 or 4.
  • the turning force of the furnace body is transmitted to the hollow rod 2, and the supporting portion for the hollow rod 2 is destroyed.
  • the shear pin 25 is broken to release the coupling with the shear pin hub 23.
  • the guide pin 27 is therefore disengaged from the guide rail 28.
  • it is indicated by, for example, the flickering of a lamp (not shown) that the scraper has bitted the adherent matter.
  • the hol- 4 low rod 2 is retreated and is reset at the right position. A new shear pin 25 is inserted between the hub 23 and the flange 24.
  • the reciprocation of the hollow rod 2 is restarted.
  • the material to-beincinerated is charged from the rear portion 11 of the kiln type furnace 1.
  • the material is burnt while flames are being blown from the front end side and the kiln is being rotated.
  • several of the material to-beincinerated becomes incompletely burnt substances and adheres to the furnace wall 10.
  • the adherent substances are deposited almost continuously with the lapse of time. Since they gradually increase in hardness, the reciprocating mechanism of the hollow rod 2 is actuated at, for example, every 2 3 hours before they become considerably hard.
  • the adherent substances deposited on the furnace wall 10 are rotated with the rotation of the furnace body.
  • the adherent substances on the furnace wall close to the charging side are struck by the scrapers 3 and 4 and are successively taken off.
  • they are blown away by the blast of compressed air of, for example, 2-5 kglcm preferably 3-5 kglcm from the air nozzle 8 provided at the lower edge of the scraper.
  • the adherent substances on the furnace wall 10 at the deeper furnace part gradually increase in fragility. Therefore, they are mostly blown away by the blast of the compressed air.
  • the size, hardness etc. of the adherent substances to be produced on the furnace wall differ in dependence on the composition of the material to-be-incinerated, the amount of charge, the incinerating temperature etc. If an automatic control system is assembled which automatically reciprocates the hollow rod at every several hours in which the adherent substances are so deposited as to be easily taken off by the movement of the scrapers, the elimination of the adherent substances will be achieved readily and automatically.
  • a device for eliminating adherent substances on a furnace wall in an industrial waste incinerator comprising:
  • scrapers for removing said adherent substances on said furnace wall which are provided at the front end of said hollow rod and on at least one intermediate part thereof;
  • a device for eliminating adherent substances on a furnace wall in an industrial waste incinerator comprising;
  • a hollow rod which is inserted in the interior of the furnace body from that side of said incinerator on which an opening for charging a material to-beincinerated is located, said hollow rod being capable of reciprocating in a certain stroke range in proximity to said furnace wall and in parallel to the furnace wall surface;
  • scrapers for removing said adherent substances on said furnace wall which are provided at the front end of said hollow rod and on at least one intermediate part thereof, said each scraper being mounted aslant so as to define an acute angle to a rotational direction of said furnace wall;
  • an air injection nozzle which is open at a position adjacent to a lower edge of at least one of said scrapers; and i a compressed air pipe which is provided in the interior of said hollowrod in order to introduce compressed air to said air injection nozzle.
  • said cooling means comprises a pipe which is shorter than said hollow rod and which is provided in the interior of said hollow rod, and wherein a water feed port communicating to the shorter pipe is provided at an end part of said hollow rod while a water exhaust port is provided at a position opposite to said water feed port.
  • a device for eliminating adherent substances on a furnace wall in an industrial waste incinerator comprising:
  • a reciprocating mechanism for reciprocating said hollow rod in a certain stroke range in proximity to one side surface of said furnace wall and in parallel to the furnace wall surface;
  • scrapers for removing said adherent substances on said furnace wall which are provided at the front 6 end of said hollow rod and at an intermediate part thereof;
  • an air injection nozzle which is open at a position adjacent to a lower edge of said scraper provided at said front end of said hollow rod;
  • a compressed air pipe which is provided in the interior of said hollow rod in order to introduce compressed air to said air injection nozzle;
  • a device for eliminating adherent substances on a furnace wall in an industrial waste incinerator comprising:
  • a reciprocating mechanism for reciprocating said hollow rod in a certain stroke range in proximity to one side surface of said furnace wall and in parallel to the furnace wall surface;
  • scrapers for removing said adherent substances on said furnace wall which are provided at the front end of said hollow rod and at an intermediate part thereof;
  • an air injection nozzle which is open at a position adjacent to a lower edge of said scraper provided at said front end of said hollow rod;
  • a compressed air pipe which is provided in the interior of said hollow rod in order to introduce compressed air to said air injection nozzle;
  • a guide pin mounted at a lower part of a flange on one side of said shear pin hub mechanism, as well as a guide mechanism for guiding the straight reciprocation of said hollow rod in engagement with said guide pin.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Cleaning In General (AREA)
US489062A 1974-03-15 1974-07-16 Device for eliminating an adherent substances in the industrial waste incinerator Expired - Lifetime US3918375A (en)

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Application Number Priority Date Filing Date Title
JP49030420A JPS5245427B2 (es) 1974-03-15 1974-03-15

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US3918375A true US3918375A (en) 1975-11-11

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JP (1) JPS5245427B2 (es)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4775315A (en) * 1985-06-06 1988-10-04 Veb Spezialbaukombinat Magdeburg Process and apparatus for removal of deposits and linings from horizontal cylinders
US4872834A (en) * 1988-11-09 1989-10-10 Williams Jr John W Recovery boiler port cleaner
US4907543A (en) * 1988-11-07 1990-03-13 Matranga Joseph G Boiler air port cleaner
US4960379A (en) * 1988-02-06 1990-10-02 Dango & Dienenthal Maschinenbau Gmbh Process and apparatus for opening furnace tapholes
US5082441A (en) * 1988-04-28 1992-01-21 Veb Spezialbaukombinat Magdeburg Apparatus for selectively breaking out deposits from and/or linings of rotary kilns
US5338188A (en) * 1990-03-19 1994-08-16 Cedarapids, Inc. Radiant heat rotary volatilizer
US5414887A (en) * 1992-07-31 1995-05-16 Anthony-Ross Company Apparatus for cleaning air ports of a chemical recovery furnace
US5979340A (en) * 1998-06-05 1999-11-09 The Board Of Regents Of The University Of Texas System Pole inserting robotic mechanism for accessing the interior of a harsh enclosure
US6558157B1 (en) * 2000-11-13 2003-05-06 Veba Oel Technologie Und Automatisierung Gmbh Rotary drum with rolling body arrangement

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52123572A (en) * 1976-04-09 1977-10-17 Kobe Steel Ltd Device for scraping deposit on inner wall of rotary kiln
JPS5666613A (en) * 1979-11-06 1981-06-05 Kurita Water Ind Ltd Waste incinerating device
JPS63305393A (ja) * 1987-06-05 1988-12-13 ヤマハ株式会社 体鳴楽器
JP2785145B2 (ja) * 1990-01-26 1998-08-13 旭エンジニアリング株式会社 粘性体の掻取装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1220827A (en) * 1916-10-05 1917-03-27 George Francis Downs Cleaning device for rotary kilns.
US1929880A (en) * 1928-05-26 1933-10-10 William A Darrah Process of incinerating and equipment therefor
US2391443A (en) * 1941-10-28 1945-12-25 Brassert & Co Removal of deposits from the interior surfaces of coke ovens
US3025548A (en) * 1958-11-07 1962-03-20 Mansfeld Hutten Kom Wilhelm Pi Furnace cleaning device
US3667743A (en) * 1971-02-09 1972-06-06 Pullman Inc Hearth scraping device
US3823677A (en) * 1972-12-15 1974-07-16 Combustion Eng Gravity flow incinerator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1220827A (en) * 1916-10-05 1917-03-27 George Francis Downs Cleaning device for rotary kilns.
US1929880A (en) * 1928-05-26 1933-10-10 William A Darrah Process of incinerating and equipment therefor
US2391443A (en) * 1941-10-28 1945-12-25 Brassert & Co Removal of deposits from the interior surfaces of coke ovens
US3025548A (en) * 1958-11-07 1962-03-20 Mansfeld Hutten Kom Wilhelm Pi Furnace cleaning device
US3667743A (en) * 1971-02-09 1972-06-06 Pullman Inc Hearth scraping device
US3823677A (en) * 1972-12-15 1974-07-16 Combustion Eng Gravity flow incinerator

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4775315A (en) * 1985-06-06 1988-10-04 Veb Spezialbaukombinat Magdeburg Process and apparatus for removal of deposits and linings from horizontal cylinders
US4960379A (en) * 1988-02-06 1990-10-02 Dango & Dienenthal Maschinenbau Gmbh Process and apparatus for opening furnace tapholes
US5082441A (en) * 1988-04-28 1992-01-21 Veb Spezialbaukombinat Magdeburg Apparatus for selectively breaking out deposits from and/or linings of rotary kilns
US4907543A (en) * 1988-11-07 1990-03-13 Matranga Joseph G Boiler air port cleaner
US4872834A (en) * 1988-11-09 1989-10-10 Williams Jr John W Recovery boiler port cleaner
US5338188A (en) * 1990-03-19 1994-08-16 Cedarapids, Inc. Radiant heat rotary volatilizer
US5414887A (en) * 1992-07-31 1995-05-16 Anthony-Ross Company Apparatus for cleaning air ports of a chemical recovery furnace
US5979340A (en) * 1998-06-05 1999-11-09 The Board Of Regents Of The University Of Texas System Pole inserting robotic mechanism for accessing the interior of a harsh enclosure
US6558157B1 (en) * 2000-11-13 2003-05-06 Veba Oel Technologie Und Automatisierung Gmbh Rotary drum with rolling body arrangement

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Publication number Publication date
JPS50124479A (es) 1975-09-30
JPS5245427B2 (es) 1977-11-16

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