US3698362A - Method and apparatus for incinerating waste oil - Google Patents

Method and apparatus for incinerating waste oil Download PDF

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Publication number
US3698362A
US3698362A US106742A US3698362DA US3698362A US 3698362 A US3698362 A US 3698362A US 106742 A US106742 A US 106742A US 3698362D A US3698362D A US 3698362DA US 3698362 A US3698362 A US 3698362A
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US
United States
Prior art keywords
combustion chamber
air
passage
waste oil
oil
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
US106742A
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English (en)
Inventor
Wataru Ishibashi
Satoru Nakano
Takeo Yokotani
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.)
Iwatani Corp
Original Assignee
Iwatani Corp
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
Priority claimed from JP2465470A external-priority patent/JPS4913381B1/ja
Priority claimed from JP4895770A external-priority patent/JPS5035758B1/ja
Application filed by Iwatani Corp filed Critical Iwatani Corp
Application granted granted Critical
Publication of US3698362A publication Critical patent/US3698362A/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
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/05—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste oils
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S122/00—Liquid heaters and vaporizers
    • Y10S122/01—Air heater

Definitions

  • waste oil to be incinerated is stored on its floor while burning hot air is taken in from outside through one or more burners at the furnace door to fire the oil, having a water content.
  • wasteoil usually must be previously heated before burning.
  • Waste oil cannot be continuously burned by an intermittentfire since the water and oil contents in waste oil are separately evaporated in the waste oil supply pipe, or the water and oil is expelled from burners alternately. This is because the water content is first evaporated while the oil content is still in a liquid state.
  • the object of this invention is to provide a method and apparatus for incinerating waste oil effectively by burning the waste oil by itself, irrespective of its rela- V tively large water content, and without the use of a burner or burning agent.
  • waste oil is accumulated on the floor of the furnace by continuously supplying it into a furnace or a combustion chamber. Then, the oil on the floor is dispersed into drops by primary air eminating from air tuyeres arranged on the floor of the furnace.
  • the tuyeres are provided with air nozzles designed to send out air in all directions along the outer surfaces.
  • the primary air continues to disperse the oil drops causing them to fly against the inside walls of the furnace so that the drops are further broken up into particles as fine as in an atomized condition.
  • the foggy atomized oil is then agitated in the combustion chamber by secondary air supplied from other openings and is well mixed with air. Once the foggy oil atmosphereisfired, the atomized foggy oil easily absorbs heat from the heated air, and at the same time,
  • FIG. 1 is a front view in vertical section showing an apparatus constructed in accordance with the present invention
  • a t 7 FIG. 2 is a right sideview showing the end face of the body of the apparatus illustrated-in FIG. 1, parts being broken away to reveal the internal construction
  • FIG. 3 is a front view in vertical section showing another embodiment of. an apparatus constructed in accordance with the present invention.
  • the cylindrical body 1 of a metal furnace has an annular double wall structure, i.e., an outer wall 1A and an inner wall 1B.
  • the body 1 is covered by an outermost mantle 2 of metal, providing an annular passage-3 for primary air between. the mantle 2 and the outer wall 1A.
  • the space between the outer wall 1A andthe inner wall 18 provides a cooling water jacket4, and the closed inside space of the body 1 provides a combustion chamber 5, at thefront face of which is a furnace door6, and at the back of which is astack 7.
  • the water jacket 4 is supplied with water through an inlet pipe 8, and, after circulation, the water is taken away in the form of hot water by an outlet pipe 9.
  • a supplying pipe 10 for the waste oil is inserted into the combustion chamber, in such amanner that the waste oil falls againstthe'wall ofthe' chamber 5.
  • the tuyeres 1 1 are connected at their lowest portions to a primary air chamber. 13 consisting of the passage 3 closed with a separator 12.
  • chamber 13 is supplied with primary air by a blower 14 mounted on the mantle 2 through a duct 15.
  • the duct 15 is divided by a damper 25, and a bypass pipe 16 is connected at its terminating end 17 to an inside chamber 18 situated around the furnace door 6.
  • the air in the inside chamber 18 is sent through openings 19 into the combustion chamber 5.
  • the amount of secondary air is adjusted by a valve 20, and an operator can watch the burning condition of the oil through observation window 21.
  • the device has wheels, and can be made mobile. Therefore, burning can take place in any convenient area so that vast quantities of waste oil need not be transported.
  • FIG. 3 illustrating a further example of OPERATION air is sent under pressure through the nozzles 11A of a the tuyeres 11 into the combustion chamber 5 via the primary air chamber 13.
  • the accumulated oil is dispersed in drops above the floor 18.
  • the primary air passes through the layer of the grains 24 on the screen 23, causing the oil to be blown from the surface of the individual grain in form of fine drops in the combustion chamber 5.
  • the oil is blown up from the combustion chamber 5 in the form of fine droplets, which, in addition, are caused by the primary jet of air to collide with the wall of the chamber '5, finally becoming atomized.
  • waste oil can be advantageously atomized by virtue of the synergistic effect of the primary air jet and th impact against the wall, thus the surface of the oil is infinitely increased.
  • the atomized oil is ignited from the furnace door 6, and starts to burn. Once it is fired, the atomized oil absorbs heat from the heated air in the combustion chamber, so that the water easily evaporates from the waste oil, lowering the flash point of the remaining oil, thereby ensuring the stable burning of the oil in a continuous manner.
  • the body 1 of the furnace is protected against possible corrosion due to the high temperature, and is also thermally insulated from the outside, by the cooling water in the jacket 4.
  • the cooling water is discharged from the outlet pipe 9 in the form of hot water.
  • the primary air passes through the layer of the grains 24 on the screen 23, causing the oil to blow off the surface of the grains.
  • the oil is advantageously broken up into finer droplets by the interparticle impact caused by the primary air jet.
  • the inner diameter and material 300mm X1000mm of iron of inner-walled cylinder 1B The thickness of the inner cylinder Theinner diameter and material ofoutenwalled cylinder 1A The thickness of the outer 360mmX1000mm of iron cylinder The inner diameter and material 420mm XlOOOmm of iron of the mantle 2 The thickness of the mantle 3.2mm
  • the waste oil specimen used in the incineration is as follows:
  • One example included water added to used engine oil from automobiles to produce a water content of 10%, 20%, 30% and 40% (per cent by weight) respectively.
  • Another-example included-used light oil with water added to produce a water content of 10%, 20%, 30% and 40% respectively for specimen.
  • the data derived from the fire-incineration of the aforesaid waste oils by and according to the method and apparatus of the present invention is as follows:
  • the properly-burned amount means the amount of material burned per hour in complete combustion without black smoke in the chimney, the complete combustion being confirmed by analysis of the gas.
  • Waste oil is finally changed into an atomized condition by virtue of the synergistic effect of the primary air jet and the resulting impact against the inside walls of the combustionchamber, increasing the surface area of the oil particles per unit weight, in spite of a relatively large water content, so that theatomized oil can be well mixed with air during the agitation subsequently caused by the secondary air.
  • the oil can easily be ignited and fired. Once it is fired, the oil absorbs heat from the heated air, allowing the water contained in it to evaporate very quickly providing an even temperature throughout the combustion chamber.
  • waste oil can be burned continuously and completely
  • h. means for supplying a primary source of air to the first passage, through the plurality of nozzles and bed of grains, into the combustion chamber,
  • An apparatus for incinerating waste oil compristhe combustion chamber i a metal selected from the and copper.
  • An apparatusfor incinerating waste oil comprising:
  • the apparatus of claim 2 further including:
  • the means for providing communication between the first passage and the combustion chamber includes:

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasification And Melting Of Waste (AREA)
US106742A 1970-03-23 1971-01-15 Method and apparatus for incinerating waste oil Expired - Lifetime US3698362A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2465470A JPS4913381B1 (enExample) 1970-03-23 1970-03-23
JP4895770A JPS5035758B1 (enExample) 1970-06-04 1970-06-04

Publications (1)

Publication Number Publication Date
US3698362A true US3698362A (en) 1972-10-17

Family

ID=26362207

Family Applications (1)

Application Number Title Priority Date Filing Date
US106742A Expired - Lifetime US3698362A (en) 1970-03-23 1971-01-15 Method and apparatus for incinerating waste oil

Country Status (6)

Country Link
US (1) US3698362A (enExample)
BE (1) BE763448A (enExample)
CA (1) CA929422A (enExample)
DE (1) DE2106143A1 (enExample)
FR (1) FR2083837A5 (enExample)
GB (1) GB1292242A (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5149260A (en) * 1989-05-01 1992-09-22 Foust Harry D Device and method for combustion of waste oil
CN105737171A (zh) * 2016-03-25 2016-07-06 首钢总公司 一种高炉废油脂喷吹装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5149260A (en) * 1989-05-01 1992-09-22 Foust Harry D Device and method for combustion of waste oil
CN105737171A (zh) * 2016-03-25 2016-07-06 首钢总公司 一种高炉废油脂喷吹装置
CN105737171B (zh) * 2016-03-25 2017-12-22 首钢总公司 一种高炉废油脂喷吹装置

Also Published As

Publication number Publication date
FR2083837A5 (enExample) 1971-12-17
BE763448A (fr) 1971-07-16
GB1292242A (en) 1972-10-11
CA929422A (en) 1973-07-03
DE2106143A1 (de) 1971-10-14

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