JPS6126750Y2 - - Google Patents
Info
- Publication number
- JPS6126750Y2 JPS6126750Y2 JP7141082U JP7141082U JPS6126750Y2 JP S6126750 Y2 JPS6126750 Y2 JP S6126750Y2 JP 7141082 U JP7141082 U JP 7141082U JP 7141082 U JP7141082 U JP 7141082U JP S6126750 Y2 JPS6126750 Y2 JP S6126750Y2
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- wall
- adhesion
- coating layer
- sic
- 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
Links
- 239000002699 waste material Substances 0.000 claims description 13
- 239000011247 coating layer Substances 0.000 claims description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 description 15
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 12
- 239000011449 brick Substances 0.000 description 11
- 229910010271 silicon carbide Inorganic materials 0.000 description 11
- 238000000576 coating method Methods 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009970 fire resistant effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011823 monolithic refractory Substances 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000002345 surface coating layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Ceramic Products (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Description
【考案の詳細な説明】
本考案は都市ごみ焼却炉、産業廃棄物処理炉等
の炉壁内面のクリンカー付着や損傷を防止し、炉
自体の寿命を延長し操業効率を向上する、ごみ焼
却炉等炉壁の改良に関するものである。[Detailed description of the invention] This invention is a garbage incinerator that prevents clinker from adhering to or damaging the inner surface of the furnace walls of municipal waste incinerators, industrial waste treatment furnaces, etc., extends the life of the furnace itself, and improves operational efficiency. This concerns the improvement of furnace walls.
すなわち、前記ごみ焼却炉等において、経時使
用後壁面損傷が顕著な場合、炭化珪素（SiC）質
補修材によつて炉壁損傷部をコーチングしたも
の、あるいは当初から損傷の大きい部分に炭化珪
素質材料のコーチングを施こした炉壁構成を提供
する。 In other words, if the wall surface damage of the above-mentioned waste incinerator is significant after use over time, the damaged part of the furnace wall may be coated with silicon carbide (SiC) repair material, or silicon carbide repair material may be applied to the severely damaged area from the beginning. Furnace wall configurations with material coatings are provided.
都市ごみ焼却炉は近年益々大型化、機械化し、
連続操業によるマスプロ化が進んでいる。一方、
焼却されるごみ質については、一般家庭から発生
する厨芥ごみおよび産業廃棄物などは、最近プラ
スチツクを例とする有機高分子系物質の混入によ
る高発熱量による高温燃焼化、および水蒸気、塩
素、塩酸、アルカリなどの各種ガスの影響による
腐食によつて、炉内燃焼室、乾燥室の炉壁炉材に
与える損傷要因は一段と苛酷になつている。した
がつて炉壁炉材の寿命は低下し、従来２年以上で
あつたものが現在は６ケ月ないし１年程度で改修
に至る状況である。従来の壁面補修材としてはボ
ロン系、珪酸ソーダ系などの液状塗布材が試みら
れたが、損傷進行スピードの遅延については若干
の効果が認められたものの、炉壁復元に対する効
果はなく、寿命延長にはほとんど効果がみられな
かつた。 In recent years, municipal waste incinerators have become larger and more mechanized.
Mass production through continuous operation is progressing. on the other hand,
Regarding the quality of waste to be incinerated, kitchen garbage and industrial waste generated from general households have recently been incinerated at high temperatures due to the high calorific value due to the mixing of organic polymeric substances such as plastics, as well as water vapor, chlorine, and hydrochloric acid. Due to corrosion caused by the influence of various gases such as alkali and alkali, the damage caused to the furnace wall materials of the combustion chamber and drying chamber in the furnace is becoming more severe. As a result, the lifespan of furnace wall furnace materials has decreased, and what used to be more than two years now requires about six months to one year to be repaired. As conventional wall repair materials, liquid coating materials such as boron-based and sodium silicate-based materials have been tried, but although they were slightly effective in slowing down the speed of damage progression, they had no effect on restoring the furnace wall, and their lifespan was extended. Almost no effect was observed.
また、一般のキヤスタブル、プラスチツクなど
の補修材については、既存壁面との接着性が劣
り、早期に脱落してしまう。また、かりに接着し
たとしても、該補修材と炉内ダスト、ガスなどと
の反応性が著るしく、クリンカー付着がおこり、
操業機能が阻害される場合が多い状況である。 Furthermore, general repair materials such as castable and plastic have poor adhesion to existing walls and fall off quickly. In addition, even if the repair material is bonded to the clinker, the reactivity between the repair material and furnace dust, gas, etc. is significant, and clinker adhesion occurs.
This is a situation where operational functions are often hindered.
このような従来の問題点を解決するため種々実
験、検討を重ねた結果、SiC質れんががセメント
ロータリーキルン内張りに用いられている状況か
ら、この特性を発揮するとともに、叙上の苛酷な
条件下にあるごみ焼却炉表面層に適合するよう、
さらに改良を加え、SiC質コーチング技術がごみ
質を焼却する炉に全く試みられなかつた現状か
ら、ごみ焼却炉炉壁表面に適用するに際して最も
効果的な表層材としての耐火性被覆層をもつごみ
焼却炉炉壁を開発した。 As a result of various experiments and studies to solve these conventional problems, we have found that SiC bricks, which are used for the lining of cement rotary kilns, exhibit these characteristics and can withstand the harsh conditions mentioned above. To fit the surface layer of certain waste incinerators,
Further improvements were made, and from the current situation where SiC coating technology had not been attempted at all in incinerators that incinerate waste materials, it was discovered that the SiC coating technology had a fire-resistant coating layer as the most effective surface material when applied to the wall surface of a waste incinerator. Developed an incinerator wall.
第１図に示すごとく、炭化珪素含有量（重量
％）の変化にともなう都市ごみ焼却炉におけるク
リンカー付着（接着強度値で示す）と熱間摩耗量
との関係を実験、調査した。図示の結果により、
本考案に係る炉壁構成においては、SiC含有量を
50〜90重量％に決定した。すなわち、本考案の構
成を検討し限定するために、つぎのごとき考察を
おこなつた。 As shown in Figure 1, experiments were conducted to investigate the relationship between clinker adhesion (indicated by adhesive strength value) and hot wear amount in municipal waste incinerators as the silicon carbide content (wt%) changes. According to the results shown,
In the furnace wall configuration according to this invention, the SiC content is
It was determined to be 50-90% by weight. That is, in order to examine and limit the configuration of the present invention, the following considerations were made.
(1) クリンカー付着性の検討
ごみ焼却炉はごみ質および高温操業によつて
炉壁表面にクリンカーが付着し、操業を阻害す
る。これらの要因に対し、前記各種試験および
実炉実績から、第１図のグラフの傾向を判断し
て、実用性を加味のうえ、炉壁被覆層の化学成
分として、重量％で、SiC50〜90％、好ましく
は75〜85％にした。SiCが50重量％以下はクリ
ンカー付着性が大きく、なお壁面れんがとの熱
膨張差が異なることと、被覆層（補修材または
炉壁れんが積時の表面コーチングなど）自体
が、使用中にSiCが酸化することによつて膨張
し、壁面との接着強度が低下し被覆層が剥離す
る。また、SiC90重量％以上になると、壁面と
の接着性が劣り、SiCの酸化現象が著るしくな
つて実用に適しない。(1) Examination of clinker adhesion Clinker adheres to the furnace wall surface of waste incinerators due to the quality of waste and high-temperature operation, hindering operation. Regarding these factors, based on the above various tests and actual furnace results, judging the trends in the graph in Figure 1 and taking practicality into account, the chemical components of the furnace wall coating layer should be SiC50 to 90% by weight. %, preferably 75-85%. If SiC is less than 50% by weight, clinker adhesion is high, and the difference in thermal expansion from that of wall bricks is different, and the coating layer itself (repair material or surface coating when laying furnace wall bricks, etc.) may not absorb SiC during use. It expands due to oxidation, the adhesive strength with the wall surface decreases, and the coating layer peels off. Moreover, if SiC exceeds 90% by weight, the adhesion to the wall surface will be poor and the oxidation phenomenon of SiC will become significant, making it unsuitable for practical use.
(2) 壁面との接着性の検討
被覆後すみやかに硬化し、強度を発現相る必
要があるため自硬性材質にすることが有効であ
る。このため実験と実炉の体験からアルミナセ
メントを３〜20重量％、好ましくは10〜15重量
％添加することが本考案炉壁の被覆層に最適で
ある。(2) Consideration of adhesion to the wall surface It is effective to use a self-hardening material because it needs to harden quickly after coating and develop strength. For this reason, based on experiments and experience in actual furnaces, it is optimal to add 3 to 20% by weight of alumina cement, preferably 10 to 15% by weight, in the coating layer of the furnace wall of the present invention.
アルミナセメントは市販品を使用し、化学成
分その他の特性に基いて限定範囲内で実用目的
に応じてその添加量を増減しコントロールする
アルミナセメントの化学成分としては、たとえ
ば、Al2O350〜70％、CaO20〜35％のものが一
般的である。 Alumina cement is a commercially available product, and the amount of addition is controlled by increasing or decreasing it according to the practical purpose within a limited range based on the chemical composition and other characteristics.The chemical components of alumina cement include, for example, Al 2 O 3 50 ~ 70%, CaO20-35% is common.
すなわち、本考案の炉壁は第２図に示す構成
からなるごみ焼却炉炉壁であつて、炉内側の加
熱面に内張りれんが２（粘土質、高アルミナ質
など）の表層部に施工した耐火性被覆層１から
なり、炉外側に鉄皮３を設けている。 That is, the furnace wall of the present invention is a waste incinerator wall having the configuration shown in Fig. 2, and has a refractory wall constructed on the surface layer of the lining brick 2 (made of clay, high alumina, etc.) on the heating surface inside the furnace. The furnace consists of a steel coating layer 1, and an iron skin 3 is provided on the outside of the furnace.
本考案における耐火性被覆層についてさらに説
明すると、その粒度構成は、施工上および接着性
の面から実験の結果、
重量％
粒径3.0mm以上 0.0
2.99〜2.38mm 1.0〜5.0％
2.37〜0.297mm 49.0〜59.0％
0.296〜0.074mm 15.0〜25.0％
0.073mm以下 21.0〜27.0％
の範囲が適当であつた。 To further explain the fire-resistant coating layer of the present invention, its particle size composition was determined from the results of experiments from the viewpoint of construction and adhesion. Weight% Particle size 3.0 mm or more 0.0 2.99-2.38 mm 1.0-5.0% 2.37-0.297 mm 49.0 ~59.0% 0.296~0.074mm 15.0~25.0% 0.073mm or less 21.0~27.0% The following ranges were appropriate.
また、接着強度については、壁面との接着性
が、施工乾燥後、および焼成後ともに高強度を要
し、その接着強度は曲げ強度の測定値で、
110℃−24hrs、乾燥後、 20Kg／cm2以上
1000℃−3hrs、焼成後、 30Kg／cm2以上
1300℃−3hrs、焼成後、 60Kg／cm2以上
になつた。 In addition, regarding adhesive strength, high strength is required for adhesion to the wall surface both after construction and drying and after firing, and the adhesive strength is the measured value of bending strength, 110℃-24hrs, after drying, 20Kg/cm 2 or more 1000℃-3hrs, after baking, 30Kg/cm2 or more 1300℃-3hrs, after baking, it became 60Kg/cm2 or more .
なお、施工性を最適にするため、有機バインダ
ーとしてポリアルキルアリルスルフオン酸、リグ
ニンスルフオン酸塩などを適量（施工性は現場に
応じてその添加量を任意に調整し得る）添加する
ことができる。 In addition, in order to optimize workability, an appropriate amount of polyalkylaryl sulfonic acid, lignin sulfonate, etc. may be added as an organic binder (the amount of addition can be arbitrarily adjusted depending on the worksite). can.
このような耐火性被覆層を、炉壁内張りれんが
または不定形耐火物の新張り時または損傷補修時
に、コテ塗りまたは吹付け施工でおこなう。れん
が壁面の凹凸が少なく、被覆層の接着が困難な場
合は、各種金網をステツプルあるいはジエツトア
ンカー等によつて補強して施工する。 Such a refractory coating layer is applied by troweling or spraying when installing new bricks or monolithic refractories or repairing damage. If the brick wall surface has few irregularities and it is difficult to adhere the coating layer, reinforcing various types of wire mesh with staples or jet anchors.
本考案構成の炉壁を、某所ごみ焼却炉の燃焼
室、乾燥室、ロータリーキルンおよび還元雰囲気
で使用するロータリーキルンの補修に適用した結
果を綜合判定すると、つぎのような効果を挙げ
た。 When the furnace wall of the present invention was applied to the repair of the combustion chamber, drying chamber, rotary kiln, and rotary kiln used in a reducing atmosphere of a certain garbage incinerator, the following effects were obtained.
(1) 炉寿命の延長
６カ月後の使用でも施工時と全く同様の状態
であつて損傷は全く見られない。定期的に本考
案構成によつて補修すれば炉壁れんがの損傷は
半永久的に進行しないものと推定される。(1) Extension of furnace life Even after 6 months of use, the condition is exactly the same as at the time of construction, and no damage is observed. It is estimated that if the furnace wall bricks are regularly repaired using the configuration of the present invention, damage to the furnace wall bricks will not progress semi-permanently.
(2) クリンカー付着の抑制
従来の粘土質（SiO2−Al2O3系）コーチング
補修の場合は、クリンカーの付着が大きく炉機
能を阻害していた。本考案の場合は、クリンカ
ー付着は約100mmであつて、かつ付着物の接着
性が低いため、容易にクリンカーが剥離し良好
であつた。(2) Suppression of clinker adhesion In the case of conventional clayey (SiO 2 -Al 2 O 3 based) coating repair, clinker adhesion was large and inhibited furnace function. In the case of the present invention, the clinker adhesion was approximately 100 mm, and the adhesion of the adhering material was low, so the clinker was easily peeled off and was good.
なお、ロータリーキルン内面は垂直壁面でな
く迫りになつているため、れんが壁面との接着
性が良く、粘土質れんが表面に表面被覆層を50
mm厚さにコテ塗りした結果、６ケ月の耐用を示
し、なお使用中である。 In addition, the inner surface of the rotary kiln is not a vertical wall surface, but a looming one, so it has good adhesion to the brick wall surface, and a surface coating layer of 50% is applied to the clay brick surface.
When coated with a trowel to a thickness of mm, it showed a durability of 6 months and is still in use.
第１図は炭化珪素含有量とクリンカー付着およ
び熱間摩耗量との関係図を示し、第２図は本考案
に係るごみ焼却炉炉壁の部分断面図である。
図中、１……耐火性被覆層、２……内張りれん
が。
FIG. 1 shows a relationship diagram between silicon carbide content, clinker adhesion, and amount of hot wear, and FIG. 2 is a partial sectional view of the furnace wall of a waste incinerator according to the present invention. In the figure, 1... refractory coating layer, 2... lining brick.
Claims (1)
量％からなる耐火性被覆層を加熱面に有するごみ
焼却炉炉壁。 A waste incinerator wall having a refractory coating layer on the heating surface consisting of 50 to 90% by weight of SiC and 3 to 20% by weight of alumina cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7141082U JPS58175354U (en) | 1982-05-18 | 1982-05-18 | Garbage incinerator wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7141082U JPS58175354U (en) | 1982-05-18 | 1982-05-18 | Garbage incinerator wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58175354U JPS58175354U (en) | 1983-11-24 |
| JPS6126750Y2 true JPS6126750Y2 (en) | 1986-08-11 |
Family
ID=30081027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7141082U Granted JPS58175354U (en) | 1982-05-18 | 1982-05-18 | Garbage incinerator wall |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58175354U (en) |
-
1982
- 1982-05-18 JP JP7141082U patent/JPS58175354U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58175354U (en) | 1983-11-24 |
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