JP3784224B2 - Composition for chimney lining material and molded lining material thereof - Google Patents
Composition for chimney lining material and molded lining material thereof Download PDFInfo
- Publication number
- JP3784224B2 JP3784224B2 JP31504499A JP31504499A JP3784224B2 JP 3784224 B2 JP3784224 B2 JP 3784224B2 JP 31504499 A JP31504499 A JP 31504499A JP 31504499 A JP31504499 A JP 31504499A JP 3784224 B2 JP3784224 B2 JP 3784224B2
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- lining material
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- chimney
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Chimneys And Flues (AREA)
- Producing Shaped Articles From Materials (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明は、煙突の内張り材用組成物およびその成形内張り材に係るもので、さらに詳しくは抄造によって製造する煙突の内張り材用組成物およびその成形内張り材に関する。
【０００２】
【従来の技術】
従来、建築分野で使用される円筒状煙突の内張り材には、原料組成物を型に流し込んで成形したコンクリート管等が知られている。
また、丸網抄造によって成形した石綿スレート管、石綿ケイ酸カルシウム管も知られている。
【０００３】
【発明が解決しようとする課題】
上記内張り材のうち、コンクリート管は重量が重く、耐熱性が低いという問題がある。
これに対し、丸網抄造によって得られた石綿スレート管や石綿ケイ酸カルシウム管は比較的軽量であるが、発ガン性物質である石綿を使用している点に問題がある。
近年、ビルの多機能化により非常用発電機を設置するケースが増え、発電設備も大型化、高性能化しており、その排ガス温度が高温（４００〜６００℃）になってきている。
また、石綿に対する規制も厳しく、石綿を使用しないで、石綿とほぼ同等の耐熱性を有する煙突用内張り材が必要となっている。
【０００４】
本発明は、軽量で、かつ石綿を使用しないで高温域でも使用可能な煙突の内張り材用組成物およびその成形内張り材を提供することを主たる目的としている。
【０００５】
【課題を解決するための手段】
本発明者等は、上記問題を解決するべく鋭意研究を重ねた結果、セメント、パルプ、耐熱性充填材、粘土を主成分として配合した組成物を調製し、この配合組成物を丸網抄造することにより、軽量で耐熱性を有する煙突用内張り材が得られることを知り、この知見に基づいて本発明を完成したものである。
【０００６】
即ち、本発明による煙突の内張り材用組成物は、配合組成がセメント、パルプ、耐熱性充填材、粘土からなることを要旨としている。
【０００７】
また、本発明による煙突の内張り材は、前記配合組成物を丸網抄造して円筒状に成形されていることを要旨としている。
【０００８】
上記配合組成物において、セメントとしては、セメントもしくはシリカヒューム、高炉スラグ、フライアッシュ等の混和材を用いたセメントを使用する。
【０００９】
上記パルプは、抄造時における他の組成材料の目留め効果に有用なものであり、かつ補強効果にも寄与するものである。パルプの配合量はセメント１００重量部に対して２〜２０重量部、好ましくは６〜１０重量部であり、２０重量部を越えると不燃性（耐熱性）が悪くなり、２重量部以下になると抄造性（目留め作用）が悪くなる。
【００１０】
上記耐熱性充填材としては、マイカ、ワラストナイト等があり、その配合量はセメント１００重量部に対して２〜１００重量部、好ましくは５０〜８０重量部であり、多くなると強度が弱くなり、少ないと耐熱性の低下を招く。
【００１１】
上記粘土としては、木節粘土、カオリン、長石、蛙目粘土、ベントナイト等の粘土鉱物があり、特に木節粘土を使用するのが良好である。その配合量はセメント１００重量部に対し５〜６０重量部が好ましい。粘土を添加することで強度が強くなるが、６０重量部を越えると加熱後の寸法変化が大きくなり、耐熱性に問題がある。
上記配合組成物の他に無機充填材および補強繊維を加えてもよい。
【００１２】
上記無機充填材としては、粉砕または細分された形の無機物、例えば珪石、タルク、セピオライト、炭酸カルシウム等の不活性または水に不溶性の各種鉱物等が使用される。これらの充填材は単独あるいは混合して使用することができる。
【００１３】
上記補強繊維としては、Ｅガラス繊維、耐アルカリガラス繊維（ＡＲＧ）等のガラス繊維、ポリプロピレン繊維、ナイロン繊維等が挙げられる。耐熱性からは特にＡＲＧが好ましい。
【００１４】
【発明の実施の形態】
本発明の好ましい実施の形態としては、セメント１００重量部に対してパルプ２〜２０重量部、耐熱充填材２０〜１００重量部、粘土５〜６０重量部からなる配合組成物を丸網抄造して円筒状に成形して煙突の内張り材とする。
【００１５】
【実施例】
本発明の実施例を比較例と共に下記表１に示す。
表１に記載された配合組成物を丸網抄造機で丸網抄造して、内径６１２ｍｍ、長さ９００ｍｍ、厚さ１１ｍｍ（密度１．３０g/cm3）の円筒形の成形体（内張り材製品）を得る。
【００１６】
上記円筒形の成形体を蒸気養生および自然養生を１０日以上行ってセメントを硬化させる。
上記によって得られた円筒形製品について、煙突の内張り材として特に重要な性能である耐熱性と、コンクリート打設（内張り材の外周に設けた型枠にコンクリートを流し込み、内張り材と一体化する）時の耐圧強度について、下記の試験で評価を行った。
【００１７】
耐熱性試験
図１に示すように、円筒形の試験体にガラスマットの断熱材（図示してない）を巻き付けた製品をバーナーで６５０℃２時間加熱し、常温まで冷却を２サイクル行い、亀裂の発生等の有無を確認する。
【００１８】
耐圧試験
図２に示すように、円筒形の試験体をビニール袋に密封し、水圧により２．５kgf/cm2に加圧し、亀裂や破損の有無を確認する。
【００１９】
【表１】
【発明の効果】
以上詳述したように、本発明によれば、軽量で、かつ石綿を使用しないで高温域でも使用可能な煙突の内張り材用組成物および内張り材が得られる。
【図面の簡単な説明】
【図１】耐熱試験の説明図である。
【図２】耐圧試験の説明図である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a composition for a chimney lining material and a molding lining material thereof, and more particularly to a composition for a chimney lining material produced by papermaking and a molding lining material thereof.
[0002]
[Prior art]
Conventionally, as a cylindrical chimney lining material used in the construction field, a concrete pipe or the like formed by pouring a raw material composition into a mold is known.
In addition, asbestos slate tubes and asbestos calcium silicate tubes formed by round netting are also known.
[0003]
[Problems to be solved by the invention]
Among the above-mentioned lining materials, concrete pipes have a problem that they are heavy and have low heat resistance.
On the other hand, the asbestos slate tube and the asbestos calcium silicate tube obtained by round netting are relatively light, but there is a problem in using asbestos which is a carcinogenic substance.
In recent years, the number of cases where emergency generators are installed has increased due to the multi-functionality of buildings, power generation facilities have become larger and higher performance, and the exhaust gas temperature has become high (400 to 600 ° C.).
In addition, regulations on asbestos are strict, and a chimney lining material having almost the same heat resistance as that of asbestos is required without using asbestos.
[0004]
The main object of the present invention is to provide a composition for a chimney lining material that is lightweight and can be used in a high temperature range without using asbestos, and a molded lining material thereof.
[0005]
[Means for Solving the Problems]
As a result of intensive studies to solve the above problems, the present inventors prepared a composition containing cement, pulp, heat-resistant filler, and clay as main components, and made this composition into a round net. Thus, it was found that a lightweight and heat-resistant chimney lining material was obtained, and the present invention was completed based on this finding.
[0006]
That is, the composition of the chimney lining material according to the present invention is characterized in that the blending composition is composed of cement, pulp, heat-resistant filler, and clay.
[0007]
Further, the chimney lining material according to the present invention has a gist that it is formed into a cylindrical shape by round net-making the composition.
[0008]
In the above blended composition, as the cement, cement or cement using an admixture such as silica fume, blast furnace slag, fly ash or the like is used.
[0009]
The above-mentioned pulp is useful for the sealing effect of other composition materials at the time of papermaking, and also contributes to the reinforcing effect. The blending amount of the pulp is 2 to 20 parts by weight, preferably 6 to 10 parts by weight with respect to 100 parts by weight of the cement. When the amount exceeds 20 parts by weight, the nonflammability (heat resistance) is deteriorated, and when it is 2 parts by weight or less. Papermaking properties (meshing action) deteriorate.
[0010]
Examples of the heat-resistant filler include mica and wollastonite, and the blending amount thereof is 2 to 100 parts by weight, preferably 50 to 80 parts by weight, with respect to 100 parts by weight of cement. If it is less, the heat resistance will be lowered.
[0011]
Examples of the clay include clay minerals such as kibushi clay, kaolin, feldspar, glazed clay, and bentonite, and it is particularly preferable to use kibushi clay. The blending amount is preferably 5 to 60 parts by weight with respect to 100 parts by weight of cement. The strength is increased by adding clay, but if it exceeds 60 parts by weight, the dimensional change after heating becomes large, and there is a problem in heat resistance.
In addition to the above composition, inorganic fillers and reinforcing fibers may be added.
[0012]
As the inorganic filler, inorganic substances in a pulverized or finely divided form, for example, various inert or water-insoluble minerals such as silica, talc, sepiolite, calcium carbonate, and the like are used. These fillers can be used alone or in combination.
[0013]
Examples of the reinforcing fibers include glass fibers such as E glass fibers and alkali-resistant glass fibers (ARG), polypropylene fibers, and nylon fibers. In view of heat resistance, ARG is particularly preferable.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
As a preferred embodiment of the present invention, a round net is made of a composition comprising 2 to 20 parts by weight of pulp, 20 to 100 parts by weight of heat-resistant filler, and 5 to 60 parts by weight of clay with respect to 100 parts by weight of cement. It is formed into a cylindrical shape to form a chimney lining material.
[0015]
【Example】
Examples of the present invention are shown in Table 1 below together with comparative examples.
The compounded composition described in Table 1 is made into a round net using a round net making machine, and a cylindrical shaped product (lining material product) having an inner diameter of 612 mm, a length of 900 mm, and a thickness of 11 mm (density 1.30 g / cm 3 ). )
[0016]
The cylindrical shaped body is subjected to steam curing and natural curing for 10 days or longer to cure the cement.
For the cylindrical product obtained as described above, heat resistance, which is a particularly important performance as a chimney lining material, and concrete placement (concrete is poured into a formwork provided on the outer periphery of the lining material and integrated with the lining material) The pressure resistance at the time was evaluated by the following test.
[0017]
Heat resistance test As shown in FIG. 1, a product in which a glass mat heat insulating material (not shown) is wrapped around a cylindrical specimen is heated with a burner at 650 ° C. for 2 hours, cooled to room temperature for 2 cycles, and cracked. Check whether there is any occurrence.
[0018]
As shown in FIG. 2, a cylindrical test specimen is sealed in a plastic bag and pressurized to 2.5 kgf / cm 2 by water pressure to check for cracks or breakage.
[0019]
[Table 1]
【The invention's effect】
As described above in detail, according to the present invention, a composition for a chimney lining material and a lining material that are lightweight and can be used even in a high temperature range without using asbestos are obtained.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a heat resistance test.
FIG. 2 is an explanatory diagram of a pressure resistance test.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31504499A JP3784224B2 (en) | 1999-11-05 | 1999-11-05 | Composition for chimney lining material and molded lining material thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31504499A JP3784224B2 (en) | 1999-11-05 | 1999-11-05 | Composition for chimney lining material and molded lining material thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001132935A JP2001132935A (en) | 2001-05-18 |
| JP3784224B2 true JP3784224B2 (en) | 2006-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31504499A Expired - Fee Related JP3784224B2 (en) | 1999-11-05 | 1999-11-05 | Composition for chimney lining material and molded lining material thereof |
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| JP (1) | JP3784224B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4604951B2 (en) * | 2005-10-07 | 2011-01-05 | トヨタ自動車株式会社 | Control device for automatic transmission |
| JP4688894B2 (en) * | 2008-01-16 | 2011-05-25 | 日本インシュレーション株式会社 | Calcium silicate molded body for chimney lining and method for producing the same |
| JP5872165B2 (en) * | 2011-01-21 | 2016-03-01 | 大成建設株式会社 | Explosion-preventing ultra-high-strength precast concrete and method for producing the same |
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1999
- 1999-11-05 JP JP31504499A patent/JP3784224B2/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| JP2001132935A (en) | 2001-05-18 |
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