WO2002101310A1 - Gaine de sortie de scorie, four de fusion servant a gazeifier des dechets situe dans cette gaine et procede de remplacement de cette gaine - Google Patents

Gaine de sortie de scorie, four de fusion servant a gazeifier des dechets situe dans cette gaine et procede de remplacement de cette gaine Download PDF

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Publication number
WO2002101310A1
WO2002101310A1 PCT/JP2002/005472 JP0205472W WO02101310A1 WO 2002101310 A1 WO2002101310 A1 WO 2002101310A1 JP 0205472 W JP0205472 W JP 0205472W WO 02101310 A1 WO02101310 A1 WO 02101310A1
Authority
WO
WIPO (PCT)
Prior art keywords
slag
sleeve
refractory
furnace
slag port
Prior art date
Application number
PCT/JP2002/005472
Other languages
English (en)
Japanese (ja)
Inventor
Toshihiro Tatami
Tsuneo Matsudaira
Yasuo Suzuki
Haruo Ito
Yuichi Yamakawa
Original Assignee
Nkk 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 Nkk Corporation filed Critical Nkk Corporation
Priority to KR1020037001647A priority Critical patent/KR100649329B1/ko
Priority to EP02730892A priority patent/EP1308683A1/fr
Publication of WO2002101310A1 publication Critical patent/WO2002101310A1/fr

Links

Classifications

    • 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
    • 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
    • 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
    • F23J1/08—Liquid slag removal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/16—Introducing a fluid jet or current into the charge

Definitions

  • the present invention relates to a slag for a slag outlet for discharging molten slag in a waste gasification / melting furnace or the like. And a waste gasification and melting furnace equipped with the same and a method for replacing the same.
  • the waste gasification and melting furnace is a melting furnace that pyrolyzes waste to gasify it and melts the residue.
  • the combustible gas generated is burned by blowing air in the secondary combustion chamber, and the exhaust gas generated at that time is sent to the boiler for heat recovery.
  • the molten slag generated by melting the residue is discharged outside the furnace and solidified, and the slag is used for roadbed materials, backfill materials, and the like.
  • FIG. 1 is a longitudinal sectional view of a shaft type melting furnace which is an example of a conventional waste gasification melting furnace.
  • Waste 31 and coke 32 are separately charged from the top 33a of the melting furnace 33.
  • the charged coke 32 accumulates in the furnace and is burned by the oxygen-enriched air blown from the main tuyere 3 together with the fixed carbon content in the waste 31.
  • the charged waste 31 is pyrolyzed and gasified in a high-temperature reducing atmosphere on the coke 32 sedimentary layer. At this time, the residue melts and descends toward the furnace bottom 33b. Then, the generated combustible gas 37 is sent from the duct 38 to the secondary combustion chamber.
  • the molten slag 39 that has fallen to the furnace bottom 33b is continuously or intermittently discharged from the slag outlet 2.
  • Such a tapping port 1 is usually provided in at least two places.
  • Japanese Patent Application Laid-Open No. Hei 7-316615 discloses a blast furnace tapping sleeve formed of a refractory that is not easily melted by high-temperature hot metal or molten slag.
  • the blast furnace taphole sleeve is made of a hard refractory, it cannot be easily crushed, and replacing the sleeve requires a lot of trouble and time.
  • a waste gasification / melting furnace such as a waste gasification / melting furnace
  • the purpose of this is to form an inner cylinder made of a refractory hardly melted by molten slag and an outer cylinder made of a refractory that is provided on the outer surface of this inner cylinder and can be easily cut by poling. Achieved by a fender sleeve.
  • FIG. 1 is a longitudinal sectional view of a shaft type melting furnace, which is an example of a conventional waste gasification melting furnace.
  • FIGS. 2A and 2B are views showing an example of a slag port sleeve according to the present invention.
  • 3A and 3B are diagrams showing another example of the slag port sleeve according to the present invention.
  • FIGS. 4A and 4B are views showing another example of the slag port sleeve according to the present invention.
  • FIG. 5 is a view showing another example of the slag port sleeve according to the present invention.
  • 6A and 6B are views showing an example of a core bit used for cutting by polling.
  • 7A to 7F are views showing a method for replacing a slag port sleeve according to the present invention.
  • FIG. 8 is a view showing another example of the slag sleeve according to the present invention.
  • FIGS. 9A and 9B are views showing another example of the slag port sleeve according to the present invention. MODES FOR CARRYING OUT THE INVENTION FIGS. 2A and 2B show an example of a slag port sleeve according to the present invention.
  • FIG. 2A is a front view of a slag port sleeve
  • FIG. 2B is a cross-sectional view taken along line AA of FIG. 2A.
  • the slag outlet sleeve 1 has a double structure in which an outer cylinder portion 4 made of a refractory material that can be easily cut by boring is provided on the outer surface of an inner cylinder portion 3 made of a refractory material that is not easily melted by molten slag.
  • a mortar or the like is applied to the outer surface of the refractory 5 of the waste gasification / melting furnace, and the mortar is applied to the mounting hole 5a having a certain depth.
  • the slag port 2 formed by the slag port sleeve 1 and the slag port 2 provided in the furnace body refractory 5 are installed so that their hole diameters are substantially equal and coincide with each other.
  • the sleeve 1 for the slag outlet thus mounted can be easily replaced without any labor and time.
  • Silicon carbide bricks and the like are used for the refractory forming the inner cylinder portion 3.
  • the refractory material forming the outer tubular portion 4, chamotte quality Cass evening Bull thermal conductivity of 2 W / m ⁇ K hereinafter in the order of 1400 (Si0 2, A1 2 0 3) and alumina Cass evening Bull (Si0 2, A1 2 0 3) or the like is used.
  • the thermal conductivity is set to 2 W / m'K or less because the outer cylinder 4 This is to prevent the molten slag flowing through the slag port 2 in the inner cylindrical portion 3 from cooling and reducing the flow of the molten slag or solidifying it. This also eliminates the need to provide a heating means such as a non-inductive induction heating device.
  • the outer cylinder part 4 shall have a thickness of 10 ran or more so that the hard inner cylinder part 3 surrounding the refractory 5 is not cut when it is cut by poling. Is preferred. Further, in order to reduce cutting residues during cutting, the thickness is preferably set to 50 or less.
  • the reason why the inner cylindrical portion 3 protrudes from the furnace wall in FIG. 1 is to facilitate the alignment of the core bit, and it is not always necessary to make the inner cylindrical portion 3 protrude from the furnace wall. This is the same in the following figures.
  • FIGS. 3A and 3B show another example of the slag port sleeve of the present invention.
  • Fig. 3 ⁇ is a front view of the slag outlet sleeve
  • Fig. 3 ⁇ is a cross-sectional view taken along the line III-III of Fig. 3 ⁇ .
  • the refractory 6 is formed in a wedge shape to facilitate the attachment and detachment of the outer cylindrical portion 4 to and from the notch, it is easy to replace only the refractory 6.
  • FIG. 4A and 4B show another example of the slag port sleeve according to the present invention.
  • Fig. 4 ⁇ is a front view of the slag port sleeve
  • Fig. 4 ⁇ is a cross-sectional view taken along the line CC of Fig. 4 ⁇ .
  • an oxide refractory containing at least one of alumina-based, magnesia-based, and porcelain-based is preferable.
  • the ratio of the upper part 3a and the lower part 3b in the inner cylinder part 3 depends on the height of the slag surface of the molten slag passing through the slag port 2 in the inner cylinder part 3. If the height of the slag surface of the molten slag is located at the center of the slag port, the proportion occupied by the lower part 3b is the lower half of the inner cylinder part 3, which is 50% of the entire cross section of the inner cylinder part 3. The lower the height of the slag surface of the molten slag, the lower the proportion of the lower 3b.
  • an inner cylinder part 3 integrally formed such that the upper part 3a is covered by the lower part 3b as shown in FIG. 5 can be used.
  • the length of the upper part 3a in the furnace direction does not need to be the same as the length of the lower part 3, but is limited only to the tip of the sleeve 1 for the slag port, which is easily worn out by the oxidizing atmosphere, facing the outside of the furnace.
  • FIG. 6A and 6B show an example of a core bit used when cutting the outer cylinder part 4 by polling.
  • FIG. 6A is a front view of the core bit
  • FIG. 6B is a side view of the core bit.
  • a bottom plate 12 is provided at one end of the cylinder 11, and a plurality of bits 13 are provided at equal intervals along the circumference of the cylinder 11 at the other end, and a rotary shaft 14 connected to the bottom plate 12 is provided.
  • Polling can be performed by applying a hammering rotation with a rock drill or rotating with a rotating machine around the center.
  • 7A to 7F show a method for replacing the sleeve for the slag port according to the present invention.
  • the tapping sleeve of the present invention can be replaced as described above, the task of replacing the tapping sleeve, which conventionally required a long time, can be performed in a short time.
  • FIG. 8 the center A of the inner cylinder 3 of the sleeper 1 for the slag outlet, the center B of the outer cylinder 4 and the center C of the slag outlet 1 do not necessarily have to be concentric.
  • the center of the outer cylinder 4 is eccentric to the inner cylinder 3 by L1 so that the thickness changes along the circumferential direction of the outer cylinder 4 in accordance with the heat distribution in the circumferential direction.
  • the center of the slag port 2 with respect to the inner cylindrical portion 3 can be eccentric upward or downward by L2.
  • FIG. 9A is a front view of a slag port sleeve
  • FIG. 9B is a cross-sectional view taken along the line DD of FIG. 9A.
  • the tapping sleeve 1 is an example of a tapping sleeve provided through the furnace body refractory 5 in the thickness direction. Similar to the slag port sleeve described above, it is composed of an inner cylinder 3 made of a refractory hardly melted by molten slag and an outer cylinder 4 made of a refractory that can be cut by poling. The part of the slag sleeve 1 facing the inside of the furnace covers a certain length (about 50-100 mm when the thickness T of the furnace body refractory 5 is 400 thighs). There is provided a portion 3a which is formed only of the inner cylindrical portion 3 without any. With such a structure, the furnace refractory 5 is directly contacted by molten slag. Therefore, it is not necessary to repair the refractory of the furnace body, and it is only necessary to replace the tapping sleeve 1.
  • the slag port sleeve 1 is replaced by the following steps 1) to 4).
  • a new slag sleeve 1 is coated with mortar on its outer surface, and is then mounted in the sleeve mounting hole 5a of the furnace body refractory 5.
  • the slag outlet sleeve 1 must be provided slightly above the furnace bottom, not at the furnace bottom as shown in Fig. 1.
  • the portion 3a of the slag port sleeve 1 formed only by the inner cylindrical portion 3 facing the inside of the furnace seems to be difficult to cut by bowling, but this portion 3a is also difficult to cut by the molten slag in the furnace. Melting is easy to progress due to contact, and the replacement length is not so difficult because the remaining length is short when the slag port sleeve 1 is replaced.
  • the present invention can be applied not only to the smelting furnace and the waste melting furnace, but also to the ash melting furnace and the sludge melting furnace of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

Gaine de sortie de scorie provenant d'un four de fusion permettant de gazéifier des déchets. Cette gaine est composée d'une partie tube intérieure réfractaire conçue pour être réduite par la scorie en fusion et d'une partie tube extérieure réfractaire placée sur la surface extérieure de ladite partie tube intérieure et pouvant être percée sans difficulté, ce qui permet de la remplacer facilement et rapidement.
PCT/JP2002/005472 2001-06-11 2002-06-04 Gaine de sortie de scorie, four de fusion servant a gazeifier des dechets situe dans cette gaine et procede de remplacement de cette gaine WO2002101310A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020037001647A KR100649329B1 (ko) 2001-06-11 2002-06-04 찌꺼기배출구용 슬리브, 그것을 장착한폐기물가스화용융로 및 그 교환방법
EP02730892A EP1308683A1 (fr) 2001-06-11 2002-06-04 Gaine de sortie de scorie, four de fusion servant a gazeifier des dechets situe dans cette gaine et procede de remplacement de cette gaine

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2001-175686 2001-06-11
JP2001175686 2001-06-11
JP2001358990A JP4170616B2 (ja) 2001-06-11 2001-11-26 出滓口、出滓口を装着した廃棄物ガス化溶融炉および出滓口の交換方法
JP2001-358990 2001-11-26

Publications (1)

Publication Number Publication Date
WO2002101310A1 true WO2002101310A1 (fr) 2002-12-19

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PCT/JP2002/005472 WO2002101310A1 (fr) 2001-06-11 2002-06-04 Gaine de sortie de scorie, four de fusion servant a gazeifier des dechets situe dans cette gaine et procede de remplacement de cette gaine

Country Status (4)

Country Link
EP (1) EP1308683A1 (fr)
JP (1) JP4170616B2 (fr)
KR (1) KR100649329B1 (fr)
WO (1) WO2002101310A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5156226B2 (ja) * 2006-12-15 2013-03-06 日本原子力発電株式会社 炉底のノズルユニットの支持構造、ノズルユニットの交換方法、及びノズルユニット
CN103185461A (zh) * 2013-04-09 2013-07-03 泰州振昌工业废渣综合利用有限责任公司 熔分还原改性炉外置式出渣口结构
KR102641684B1 (ko) * 2023-08-08 2024-02-28 에스오씨기술지주 주식회사 슬래그 배출장치

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6330016Y2 (fr) * 1981-08-04 1988-08-11
JPH04325618A (ja) * 1991-04-25 1992-11-16 Tokyo Yogyo Co Ltd 電気炉炉底出鋼口用ターミナルブリック
JPH09178349A (ja) * 1995-12-22 1997-07-11 Shinagawa Refract Co Ltd 電気炉出鋼口スリーブ
JPH1136011A (ja) * 1997-07-15 1999-02-09 Akechi Ceramics Kk 電気炉の溶鋼排出用耐火物
JP2000028127A (ja) * 1998-07-09 2000-01-25 Hitachi Zosen Corp 溶融炉の炉床部の耐火構造
JP2000283448A (ja) * 1999-03-31 2000-10-13 Nkk Corp 出滓口および出滓口の交換方法
JP2000283447A (ja) * 1999-03-31 2000-10-13 Nkk Corp 溶融炉の出滓口
JP7062168B2 (ja) * 2017-11-09 2022-05-06 エルジー エナジー ソリューション リミテッド 二次電池セルモジュールおよびその組立方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6330016Y2 (fr) * 1981-08-04 1988-08-11
JPH04325618A (ja) * 1991-04-25 1992-11-16 Tokyo Yogyo Co Ltd 電気炉炉底出鋼口用ターミナルブリック
JPH09178349A (ja) * 1995-12-22 1997-07-11 Shinagawa Refract Co Ltd 電気炉出鋼口スリーブ
JPH1136011A (ja) * 1997-07-15 1999-02-09 Akechi Ceramics Kk 電気炉の溶鋼排出用耐火物
JP2000028127A (ja) * 1998-07-09 2000-01-25 Hitachi Zosen Corp 溶融炉の炉床部の耐火構造
JP2000283448A (ja) * 1999-03-31 2000-10-13 Nkk Corp 出滓口および出滓口の交換方法
JP2000283447A (ja) * 1999-03-31 2000-10-13 Nkk Corp 溶融炉の出滓口
JP7062168B2 (ja) * 2017-11-09 2022-05-06 エルジー エナジー ソリューション リミテッド 二次電池セルモジュールおよびその組立方法

Also Published As

Publication number Publication date
KR20030024829A (ko) 2003-03-26
JP4170616B2 (ja) 2008-10-22
KR100649329B1 (ko) 2006-11-27
EP1308683A1 (fr) 2003-05-07
JP2003065683A (ja) 2003-03-05

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