JPH0263590A - Method and device for asbestos dust recovering and solidifying treatment - Google Patents

Method and device for asbestos dust recovering and solidifying treatment

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Publication number
JPH0263590A
JPH0263590A JP63214797A JP21479788A JPH0263590A JP H0263590 A JPH0263590 A JP H0263590A JP 63214797 A JP63214797 A JP 63214797A JP 21479788 A JP21479788 A JP 21479788A JP H0263590 A JPH0263590 A JP H0263590A
Authority
JP
Japan
Prior art keywords
asbestos
tank
cement
asbestos dust
water
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.)
Granted
Application number
JP63214797A
Other languages
Japanese (ja)
Other versions
JP2705803B2 (en
Inventor
Kazuhito Nasu
那須 一仁
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Individual
Original Assignee
Individual
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Priority to JP63214797A priority Critical patent/JP2705803B2/en
Publication of JPH0263590A publication Critical patent/JPH0263590A/en
Application granted granted Critical
Publication of JP2705803B2 publication Critical patent/JP2705803B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE:To prevent splashing and diffusing of asbestos dust by agitating the asbestos dust together with water under a negative pressure in a tank, further, adding cement thereto, and kneading the above-mentioned asbestos dust to a slurry under a negative pressure. CONSTITUTION:An agitating and kneading means 7 is provided to the tank 3 for recovering the asbestos dust. A discharge pipe 5 connected to a vacuum pump as well as an asbestos dust recovering pipe 2, a water feed pipe and a cement supplying pipe 6 are connected to the tank 3; further, an openable and closable discharge port 11 is provided thereto. The asbestos dust mixed with the water in the tank 3 is placed in the negative pressure state by the discharge air of the discharge pipe 5 opened in the tank 3 connected to the vacuum pump and the air and moisture remaining in the hollow part of asbestos fibers are expelled in the process in which the asbestos dust is agitated by the kneading means 7. After the cement is supplied, the valves of the water feed pipe and the cement supplying pipe are closed to knead the asbestos dust by the kneading means 7, by which the slurry thereof is formed. The air bubbles and moisture do not exist in the block of the solidified asbestos dust and, therefore, there is no possibility of splashing and diffusing of the asbestos dust.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、建築物等から破砕剥離した石綿屑を回収して
コンクリートにより固形化して廃棄する方法及びその装
置に関する。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method and an apparatus for collecting asbestos debris crushed and exfoliated from buildings, solidifying it with concrete, and disposing of it.

従来技術及びその課題 発がん性物質が含まれているとの理由で、建材として従
来広く用いられていた石綿の撤去作業が行われているが
、撤去作業時に石綿粉塵が空気中に浮遊して人体内に入
るのを防止し、且つ石綿繊維が浮遊して大気を汚染し、
生活環境を悪化させることを防止するため、従来は石綿
の破砕剥離等による撤去作業時には、作業現場をビニー
ルシートで囲繞して石綿粉塵の飛散を防止するとともに
、作業者は防塵マスク、作業手袋、作業服等を着用し、
作業後にはこれらの着用物を廃棄処分して、着用物に付
着した石綿粉塵の拡散を防止している。
Conventional technology and its challenges Asbestos, which has traditionally been widely used as a building material, is being removed because it contains carcinogenic substances. It prevents asbestos from entering the body, and asbestos fibers float and pollute the atmosphere.
To prevent deterioration of the living environment, conventionally, when removing asbestos by crushing and peeling, the work site was surrounded with vinyl sheets to prevent asbestos dust from scattering, and workers were required to wear dust masks, work gloves, and Wear work clothes, etc.
After work, these items are disposed of to prevent asbestos dust from spreading.

また、破砕剥離した石綿屑の回収処理については、作業
現場でバキュームカー又はコンテナ車等に回収して固形
化作業場まで運搬し、石綿屑にセメント、水を加えて混
練して泥状化し、処理容器に排出して固形化し、固形化
された石綿屑を所定の投棄場所に運搬し処分していた。
In addition, as for the collection and processing of crushed and exfoliated asbestos waste, it is collected in a vacuum car or container car at the work site, transported to the solidification work site, mixed with cement and water, mixed to form a slurry, and then processed. The asbestos waste was discharged into a container and solidified, and the solidified asbestos waste was transported to a designated dumping site for disposal.

上述した従来技術においては、石綿屑を塊状に固形化す
ることは出来るが、石綿繊維はストロ−状の中空形状を
しているため、その中空部分に空気と水分が封じ込めら
れたまま固形化され、固形化した石綿屑ブロックは、投
棄場所に放置されることによって、石綿繊維の中空部分
内に封し込められた気泡が水分とともに徐々にブロック
表面に滲出してブロック表面を侵蝕し、石綿繊維がブロ
ック表面に露出して所謂“毛羽立ち”状態になり、やが
て、ブロック表面から飛散して大気を汚染する結果とな
り、石綿屑を単にコンクリート化するだけでは、石綿屑
の飛散、拡散を完全に防止することが困難であった。
In the above-mentioned conventional technology, it is possible to solidify asbestos waste into lumps, but since asbestos fibers have a straw-like hollow shape, air and moisture are trapped in the hollow part and solidified. When the solidified asbestos waste blocks are left at the dumping site, the air bubbles sealed in the hollow parts of the asbestos fibers gradually seep out onto the block surface along with moisture, corroding the block surface and causing the asbestos fibers to erode. is exposed on the block surface and becomes a so-called "fluffy" state, which eventually scatters from the block surface and pollutes the atmosphere. Simply turning asbestos debris into concrete cannot completely prevent the scattering and dispersion of asbestos debris. It was difficult to do so.

課題を解決するための手段及び作用 本発明は、特許請求の範囲第1項、第2項に記載の構成
を必須の要件とし、その肝要な点は、石綿屑をタンク内
において負圧下で水とともに撹拌し、さらにセメントを
加えて前記石綿屑を負圧下で混練泥状化するところにあ
る。
Means and Effects for Solving the Problems The present invention has the configurations set forth in claims 1 and 2 as essential requirements, and the essential point is that asbestos debris is treated with water under negative pressure in a tank. Then, cement is added and the asbestos debris is kneaded and turned into slurry under negative pressure.

このように、石綿屑をタンク内において負圧下で水とと
もに撹拌することにより、石綿繊維の中空状部分に含ま
れる空気と水分が追い出されて押し潰される。
In this way, by stirring the asbestos waste together with water under negative pressure in the tank, the air and moisture contained in the hollow portions of the asbestos fibers are expelled and crushed.

その後にセメントを加えて前記のように押し潰された石
綿屑を負圧下で混練泥状化し、タンクから排出して固形
化させるから、従来のような毛羽立ち現象が起こること
がない。
Thereafter, cement is added and the crushed asbestos debris is kneaded under negative pressure to form a slurry, which is then discharged from the tank and solidified, so that the fluffing phenomenon that occurs in the past does not occur.

実    施    例 第1図は本発明方法の工程のフローチャートであって、
建物の天井や壁等に吹きつけられた石綿被膜層、または
建材として使用された石綿板等を破砕剥離した作業現場
の石綿屑がまず密閉タンク内に収集される。
EXAMPLE FIG. 1 is a flowchart of the steps of the method of the present invention,
Asbestos waste from the work site, which is obtained by crushing and peeling off asbestos coatings sprayed on the ceilings and walls of buildings, or asbestos boards used as building materials, is first collected in a sealed tank.

次に、タンクには水が供給される。The tank is then supplied with water.

なお、給水用管であらかじめ密閉タンク内に給水してお
き、その水面に指向して開口する石綿屑吸引回収管で密
閉タンク内に石綿屑を吸引収集する場合は、密閉タンク
内での石綿屑の飛散が防止できる。
In addition, if you supply water in advance into a sealed tank with a water supply pipe and asbestos waste is collected by suction into the sealed tank with an asbestos waste suction collection pipe that opens toward the water surface, the asbestos waste in the sealed tank will be can prevent scattering.

次に、密閉タンク内で水と混合した石綿屑は、真空ポン
プに連結して密閉タンク内に開口した排気管の排気作動
によって負圧状態におかれた密閉タンク内で後述する混
練手段によって撹拌される過程で、石綿屑内に滞留する
気泡ばかりでなく、石綿繊維の中空部分内に残存する空
気及び水分が追い出される。
Next, the asbestos debris mixed with water in the sealed tank is stirred by the kneading means described later in the sealed tank, which is placed in a negative pressure state by the exhaust operation of an exhaust pipe connected to a vacuum pump and opened into the sealed tank. During this process, not only the air bubbles remaining in the asbestos waste but also the air and moisture remaining in the hollow parts of the asbestos fibers are expelled.

脱気工程終了後に、密閉タンク内に水とセメント(粉)
とが一定の割合になるようにセメントを供給した後、給
水管およびセメント供給管のバルブを閉じ、密閉タンク
内を排気管の排気作用によって負圧状態下において、混
練手段により石綿屑と水とセメントとを混練して泥状化
する。
After the deaeration process is completed, water and cement (powder) are placed in the sealed tank.
After supplying cement to maintain a constant ratio of asbestos and water, the valves of the water supply pipe and cement supply pipe are closed, and the inside of the sealed tank is placed under negative pressure by the exhaust action of the exhaust pipe, and asbestos debris and water are mixed using a kneading means. Mix with cement to form a slurry.

泥状化した石綿屑は、排気管を閉じ、密閉タンクに設け
た排出口を開くことによりビニール袋等の所定の処理容
器内に排出される。
The sludge-like asbestos debris is discharged into a predetermined processing container such as a plastic bag by closing the exhaust pipe and opening the discharge port provided in the sealed tank.

密閉タンク内の泥状石綿屑が全ffHJII出されると
排出[」を閉塞し、再び石綿屑を回収管から収集し、前
述の工程を繰り返し、破砕剥離した現場の石綿屑を上記
工程により泥状化し、所定の容器内に排出する。
When all the muddy asbestos debris in the sealed tank has been discharged, the discharge ['' is blocked, the asbestos debris is collected again from the collection pipe, and the above-mentioned process is repeated. and discharge into a designated container.

所定の処理容器内に排出された泥状石綿屑は、セメント
の凝固作用により処理容器内で固化し、最終処理場所に
運搬投棄される。
The muddy asbestos waste discharged into a predetermined processing container is solidified within the processing container by the coagulation effect of cement, and is transported and dumped to a final processing site.

密閉タンク3は、第2図、第3図に示すように車両に搭
載した移動式タンク又は図示しない定置式タンクがある
が、密閉タンクの構造には大差がないので、移動式密閉
タンク3を第2図、第3図について説明する。
The sealed tank 3 can be a mobile tank mounted on a vehicle as shown in FIGS. 2 and 3, or a stationary tank (not shown), but there is no major difference in the structure of the sealed tank, so the mobile sealed tank 3 is used. FIG. 2 and FIG. 3 will be explained.

移動車両V上に搭載した密閉タンク3内には、このタン
ク3の軸方向に横架した混練駆動li!l!+7上にタ
ンク内壁との間に一定の隙間を有するリボンスクリュー
状の混練羽根8,8′があり、混練駆動軸7の両軸端は
密閉タンク3の両端壁を密封貫通して回転自在に軸受を
介して車体に支持されており、前記混練羽根8.8′は
左右対称に相互に捩れ方向が逆になるように設けられて
いる。軸7がある方向に回転すると、処理物は互いに両
端部方向に送られ、逆方向に回転すると処理物は中央部
に送られるようになっている。
Inside the sealed tank 3 mounted on the moving vehicle V, there is a kneading drive li! which is horizontally suspended in the axial direction of the tank 3. l! There are ribbon screw-shaped kneading blades 8, 8' on +7 with a certain gap between them and the inner wall of the tank, and both shaft ends of the kneading drive shaft 7 pass through both end walls of the closed tank 3 in a sealed manner so that they can rotate freely. The kneading blades 8,8' are supported by the vehicle body via bearings, and the kneading blades 8,8' are provided symmetrically so that their twisting directions are opposite to each other. When the shaft 7 rotates in one direction, the objects to be treated are sent toward both ends, and when the shaft 7 rotates in the opposite direction, the objects to be processed are sent toward the center.

石綿屑回収管2は、密閉タンク3内の上部に開口し、既
述した如く、石綿屑を密閉タンク3内に吸引回収するば
かりでなく、バルブの切り損え操作によりセメントを吸
引するセメント供給管6が分岐されている。
The asbestos waste collection pipe 2 opens at the upper part of the sealed tank 3, and as mentioned above, it not only collects asbestos waste into the sealed tank 3 by suction, but also performs a cement supply system that sucks out cement by operating a valve that is not cut properly. The pipe 6 is branched.

真空ポンプ(図示せず)に連結された排気管5は密閉タ
ンク3の上部に開口し、密閉タンク3内を負圧にする。
An exhaust pipe 5 connected to a vacuum pump (not shown) opens at the top of the closed tank 3 to create a negative pressure inside the closed tank 3.

また、密閉タンク3の中央側面にはハンドル9の操作に
よって開閉する排出シュート兼用蓋10を有する排出口
11が設けられ、混練された泥状石綿屑は固形化するた
めの処理容器内に排出される。
Further, a discharge port 11 having a discharge chute and lid 10 that is opened and closed by operating a handle 9 is provided on the central side of the sealed tank 3, and the kneaded muddy asbestos debris is discharged into a processing container for solidification. Ru.

破砕剥離された石綿屑は、真空ポンプに連結した排気管
5の排気作用によって密閉タンク3内が負圧状態になる
と、石綿屑回収管2から密閉タンク3内に収集される。
The crushed and exfoliated asbestos debris is collected into the sealed tank 3 through the asbestos collection pipe 2 when the inside of the sealed tank 3 is brought into a negative pressure state by the exhaust action of the exhaust pipe 5 connected to the vacuum pump.

このとき、セメント供給管6の図示しないバルブは閉じ
られている。
At this time, a valve (not shown) of the cement supply pipe 6 is closed.

一定量の石綿屑が密閉タンク3内に収集されると、水を
一定量タンク3内に給水管(セメント供給管6で兼用す
る。)から供給し石綿屑回収管2の図示しないバルブを
閉じて混練羽根8,8′を回転駆動し、石綿屑を排気作
用の継続により負圧下にある密閉タンク3内で撹拌する
When a certain amount of asbestos waste is collected in the sealed tank 3, a certain amount of water is supplied into the tank 3 from a water supply pipe (the cement supply pipe 6 also serves as the cement supply pipe), and a valve (not shown) of the asbestos waste collection pipe 2 is closed. The kneading blades 8, 8' are driven to rotate, and asbestos debris is stirred in the closed tank 3 under negative pressure by continuing the exhaust action.

この負圧下での撹拌作用によって、収集された石綿屑間
に滞留している空気は勿論のこと、石綿繊維の既述した
中空部分に入っている気泡と水分が除かれる。
By this stirring action under negative pressure, not only air remaining between the collected asbestos debris but also air bubbles and moisture contained in the hollow portions of the asbestos fibers are removed.

次に、セメント供給管6のバルブを開いて所定量のセメ
ント(粉)を密閉タンク3内に吸引して流動化した石綿
屑内に添加し、前記バルブを閉して混練羽ll1B、8
’によって混練する。なお、重量比において、七×ント
19石綿屑l、水0.7の割合とする。
Next, the valve of the cement supply pipe 6 is opened, and a predetermined amount of cement (powder) is sucked into the sealed tank 3 and added to the fluidized asbestos waste, and the valve is closed and the kneading blades ll1B, 8
' to knead. The weight ratio is 7 x 19 liters of asbestos waste and 0.7 liters of water.

混練中においても密閉タンク3内の排気作用は継続され
ているので、密閉タンク3内は再び負圧状態になり、脱
気作用は持続される。
Since the evacuation action in the closed tank 3 continues even during kneading, the inside of the closed tank 3 becomes a negative pressure state again, and the degassing action is continued.

上述の如く、負圧下において空気及び水が分離されなか
ら、セメントと充分に混練されて泥状化した石綿屑は、
排気管5のバルブを閉じ、排出シュート兼用蓋10を開
くことにより密閉タンク3外に排出され、混練羽根8,
8′の逆回転により、既述した如く密閉タンク3内の泥
状石綿屑は中央部に誘導されて泥状石綿屑の全量が排出
口IIより排出シュー)10を経て排出される。
As mentioned above, since air and water are not separated under negative pressure, asbestos debris that has been thoroughly mixed with cement and turned into mud,
By closing the valve of the exhaust pipe 5 and opening the discharge chute-cum-lid 10, the air is discharged to the outside of the sealed tank 3, and the kneading blades 8,
By the reverse rotation of 8', the muddy asbestos debris in the closed tank 3 is guided to the center as described above, and the entire amount of muddy asbestos debris is discharged from the discharge port II through the discharge shoe 10.

排出された泥状石綿屑は所定の処理容器(通常はビニー
ル袋)内に充填され、セメントの凝固作用により固形化
する。
The discharged muddy asbestos debris is filled into a predetermined processing container (usually a plastic bag) and solidified by the coagulation action of cement.

固形化した後、容器(袋)内の空気を抜き、真空パック
に近い状態にしてバンドで密閉する。そして、このよう
に容器につめられた石綿屑は、所定の投棄場所に運搬さ
れ、埋め立てられる。
After solidifying, remove the air from the container (bag) and seal it with a band to create a state similar to a vacuum pack. The asbestos waste packed in containers is then transported to a designated dumping site and reclaimed.

なお、水タンク車を作業現場に移動させ、水タンク車か
ら前記密閉タンク2内に予め水を一定量注水しておき、
乾いた石綿屑およびセメントを石綿吸引回収管2および
セメント供給管6により密閉タンク3内の水面に直交し
て投下する如くして吸引落下させ、石綿屑およびセメン
トの飛散を抑止して貯水内に供給するとよい。
In addition, a water tank truck is moved to the work site, and a certain amount of water is poured into the sealed tank 2 from the water tank truck in advance.
Dry asbestos waste and cement are dropped by suction and fall perpendicularly to the water surface in the sealed tank 3 through the asbestos suction recovery pipe 2 and cement supply pipe 6, and the scattering of the asbestos waste and cement is suppressed and they are absorbed into the water storage. It is good to supply.

以下、タンク内で負圧下で撹拌・混練すること前述のと
おりである。
Hereinafter, stirring and kneading are carried out in a tank under negative pressure as described above.

次に、第4図乃至第6図に基づき、第2の実施例を説明
する。
Next, a second embodiment will be described based on FIGS. 4 to 6.

この石綿屑回収処理装置2工は、石綿とセメントを混合
して泥状化させる前述したものと同様の撹拌混練手段を
具えた密閉タンク23、この密閉タンク・23に接続さ
れ作業現場から石綿屑を回収するための石綿屑回収管2
2、密閉タンク23に水(及びセメント)を供給するた
めの水(セメント)供給管26、密閉タンク23内を脱
気するための真空ポンプ24、密閉タンク23と真空ポ
ンプ24を接続する排気ライン25、排気ライン25中
に配置された集塵手段31,32,33、集塵手段によ
り捕集された石綿屑を密閉タンク23内に戻すための再
回収ライン27、再回収ライン27等に設けられた複数
のバルブ35,36.3738を有してなる。石綿屑回
収管22、水(セメント)供給管26には、バルブ39
.40がそれぞれ設けられている。41は排出口である
This asbestos waste collection and processing equipment 2 consists of a closed tank 23 equipped with stirring and kneading means similar to the one described above for mixing asbestos and cement into a slurry, and a closed tank 23 that is connected to this closed tank 23 to collect asbestos waste from the work site. Asbestos waste collection pipe 2 for collecting
2. A water (cement) supply pipe 26 for supplying water (and cement) to the sealed tank 23, a vacuum pump 24 for deaerating the inside of the sealed tank 23, and an exhaust line connecting the sealed tank 23 and the vacuum pump 24. 25, dust collection means 31, 32, 33 disposed in the exhaust line 25, a re-collection line 27 for returning asbestos debris collected by the dust collection means into the closed tank 23, a re-collection line 27, etc. It has a plurality of valves 35, 36.3738. A valve 39 is installed in the asbestos waste collection pipe 22 and the water (cement) supply pipe 26.
.. 40 are provided respectively. 41 is a discharge port.

なお、動力源は車両のエンジンであり、これにより、後
述の真空ポンプ、油圧ポンプ等が駆動される。
Note that the power source is a vehicle engine, which drives a vacuum pump, a hydraulic pump, etc., which will be described later.

密閉タンク23内を脱気する手段は真空ポンプ24であ
る。真空ポンプ24は水封式ロータリーポンプであり、
排気ライン25からの空気と循環水タンク28の水を同
時に排出して、タンク23を脱気させる。供給される水
は、矢印Aで示されるように、真空ポンプ24と循環水
タンク28を還流する。また、真空ポンプ24のすぐ上
流には、排出空気の逆流を防止する逆止弁29が設けら
れている。
A means for deaerating the inside of the closed tank 23 is a vacuum pump 24. The vacuum pump 24 is a water ring type rotary pump,
Air from the exhaust line 25 and water from the circulating water tank 28 are simultaneously discharged to degas the tank 23. The supplied water flows back through the vacuum pump 24 and the circulating water tank 28, as indicated by arrow A. Further, a check valve 29 is provided immediately upstream of the vacuum pump 24 to prevent backflow of discharged air.

石綿処理現場での安全規準は、空気1 cc中に石綿繊
維2本までとされており、この規準を達成すべく、排気
ライン25には、3基の集塵手段3132.33が設け
られており、第1の集塵手段は水利用の集塵装置31、
第2の集塵手段はサイクロン式集塵装置32、第3の集
塵装置はフィルタ集塵装置1F33である。このように
、捕集可能粒子径の大きい手段が上流側、すなわち分離
限界粒子径の小さい手段が下流側に配置され、効率のよ
い捕集を行う。大きめの石綿屑は勿論タンク23内にと
どまるが、真空ポンプ24に吸引され、密閉タンク23
を通過した比較的粒子が小さい石綿屑は、これら集塵手
段31,32.33により捕集され、大気中への放散が
防止される。そして、第1の集塵装置31及びサイクロ
ン式集塵装置32によって捕集された石綿屑は、密閉タ
ンク23内に戻されるようになっている。多数のバルブ
は、捕集された石綿屑を密閉タンク23内へ回収操作す
るためのものであって、この操作については後述する。
The safety standard at asbestos treatment sites is that there are no more than two asbestos fibers in 1 cc of air, and in order to achieve this standard, three dust collection means 3132.33 are installed in the exhaust line 25. The first dust collection means is a water-based dust collection device 31,
The second dust collector is a cyclone type dust collector 32, and the third dust collector is a filter dust collector 1F33. In this way, the means with a large particle size that can be collected is placed on the upstream side, that is, the means with a small separation limit particle size is placed on the downstream side, thereby achieving efficient collection. Larger asbestos debris naturally stays in the tank 23, but is sucked into the vacuum pump 24 and removed from the closed tank 23.
Asbestos debris having relatively small particles that has passed through is collected by these dust collection means 31, 32, and 33, and is prevented from dispersing into the atmosphere. The asbestos debris collected by the first dust collector 31 and the cyclone dust collector 32 is returned into the closed tank 23. A large number of valves are used to recover collected asbestos debris into the closed tank 23, and this operation will be described later.

なお、再回収ライン27は直接密閉タンク23に接続し
てもよい。
Note that the re-collection line 27 may be directly connected to the sealed tank 23.

第1の集塵装置31は、複数の仕切板31aによって屈
曲する流路31bが形成されており、底部31cに貯留
された水31dに空気と石綿屑の混合気を導き、空気と
石綿屑粒子の比重の差を利用し、屈曲流路31bにおけ
る混合気の転回時に石綿屑を貯留水31dに捕集させる
ものである。
The first dust collector 31 has a curved flow path 31b formed by a plurality of partition plates 31a, and guides a mixture of air and asbestos debris to water 31d stored in the bottom 31c. Asbestos debris is collected in the stored water 31d when the air-fuel mixture turns in the bent flow path 31b by utilizing the difference in specific gravity.

この集塵装置31の貯留水側は、切換バルブ35を介し
タンク23に接続されている。
The stored water side of this dust collector 31 is connected to the tank 23 via a switching valve 35.

サイクロン式集塵装置32は公知のものであり、−C的
な分級においては分離限界粒子径が2〜5μ程度の集塵
手段である。サイクロン32の下流側には、切換バルブ
36を介し捕集タンク32aが設けられており、捕集タ
ンク32aは、再回収ライン27に接続されている。
The cyclone type dust collector 32 is a well-known device, and is a dust collecting means with a separation limit particle size of about 2 to 5 microns in -C classification. A collection tank 32a is provided downstream of the cyclone 32 via a switching valve 36, and the collection tank 32a is connected to the re-collection line 27.

最下流で石綿屑回収管22に接続される再回収ライン2
7は、最上流に吸入バルブ37、中流に再回収ライン切
換バルブ38を有している。捕集タンク32aは、吸入
バルブ37と再回収ライン切換バルブ38の間に接続さ
れている。
Re-collection line 2 connected to asbestos waste collection pipe 22 at the most downstream side
7 has a suction valve 37 at the most upstream side and a re-collection line switching valve 38 at the midstream side. The collection tank 32a is connected between the suction valve 37 and the re-collection line switching valve 38.

さらに、フィルタ式集塵装置33がサイクロン32の下
流側に位置している。このフィルタ式集塵装置33は、
第1フイルタ33a1第2フイルタ33b及び第3フイ
ルタ33cからなり、捕集可能粒子径の小さいものを下
流に設けである。ここで、第3のフィルタ33cは、0
.3μ程度の粒子まで捕集が可能なものを用いる。
Furthermore, a filter type dust collector 33 is located downstream of the cyclone 32. This filter type dust collector 33 is
It consists of a first filter 33a, a second filter 33b, and a third filter 33c, and the one with the smaller particle size that can be collected is provided downstream. Here, the third filter 33c is 0
.. Use one that can collect particles up to about 3μ.

同図における装置では、石綿屑吸引工程、水供給工程、
密閉タンク内の減圧脱気工程、セメント供給工程、撹拌
混練工程、密閉タンク昇圧工程、混練物排出工程、密閉
タンク減圧工程、捕集石綿屑再回収工程の順序で操作を
行う。
The device in the figure includes an asbestos waste suction process, a water supply process,
The operations are performed in the following order: vacuum degassing process in a closed tank, cement supply process, stirring and kneading process, closed tank pressure increase process, kneaded material discharge process, closed tank pressure reduction process, and collected asbestos debris recovery process.

石綿屑吸引工程では、バルブ35 37.3840を閉
じた状態(バルブ36.39は開放)で真空ポンプ24
が作動され、破砕剥離された作業現場の石綿屑が、石綿
屑吸引回収管22から密閉タンク23内に回収される。
In the asbestos dust suction process, the vacuum pump 24 is operated with the valve 35 37.3840 closed (valve 36.39 open)
is activated, and the crushed and peeled asbestos debris from the work site is collected from the asbestos debris suction and recovery pipe 22 into the sealed tank 23.

吸引された石綿屑の一部が密閉タンク23から排気ライ
ン25に侵入するが、排気ラインに設けられた集塵手段
31,32.33がこれら石綿屑を捕集し、大気中への
石綿屑の放散を防止する。
Some of the asbestos debris that has been sucked in enters the exhaust line 25 from the sealed tank 23, but the dust collection means 31, 32, and 33 provided in the exhaust line collect these asbestos debris and release the asbestos debris into the atmosphere. prevent the emission of

次に、タンク23に一定量の水を供給管26から供給す
る。
Next, a certain amount of water is supplied to the tank 23 from the supply pipe 26.

吸引バルブ39を閉じ、第1実施例で説明したように水
と石綿屑を撹拌しなから真空ポンプ24を作動させて密
閉タンク23内を減圧する脱気工程が行われる。
The suction valve 39 is closed, and a degassing process is performed in which water and asbestos debris are stirred as described in the first embodiment, and then the vacuum pump 24 is operated to reduce the pressure inside the closed tank 23.

次に、減圧下において、一定量のセメント(粉)を供給
管26より密閉タンク23内に吸引供給するセメント供
給工程が行われる。
Next, a cement supply step is performed in which a certain amount of cement (powder) is suctioned into the closed tank 23 from the supply pipe 26 under reduced pressure.

次に、撹拌混練手段(図示せず)により石綿屑とセメン
トを負圧下で泥状化する混練工程が行われる。
Next, a kneading process is performed in which asbestos debris and cement are turned into slurry under negative pressure by a stirring and kneading means (not shown).

次に、吸引バルブ39を開け、密閉タンク23内を大気
圧に昇圧させる工程が行われる。密閉タンク23内を大
気圧にしたあと、排出口41を油圧シリンダ41′を作
動させて*開くことにより、ビニール袋等の所定の処理
容器内に泥状石綿屑が排出される。
Next, a step is performed in which the suction valve 39 is opened and the pressure inside the sealed tank 23 is increased to atmospheric pressure. After the inside of the sealed tank 23 is brought to atmospheric pressure, the discharge port 41 is opened by operating the hydraulic cylinder 41', and the muddy asbestos debris is discharged into a predetermined processing container such as a plastic bag.

密閉タンク23内の泥状石綿屑が全量排出されると排出
口41を閉鎖してバルブ39を閉じ、真空ポンプ24を
作動させ、回収処理装置21内を脱気する。このとき、
開放しているのは切換バルブ36のみで、他のバルブは
閉止されている。
When all the muddy asbestos debris in the closed tank 23 is discharged, the discharge port 41 is closed, the valve 39 is closed, the vacuum pump 24 is activated, and the inside of the recovery processing device 21 is evacuated. At this time,
Only the switching valve 36 is open, and the other valves are closed.

ついで、集塵手段によって捕集された石綿屑の回収工程
を行う、切換バルブ35を開けて第1の集塵装置31内
の貯留水31dを再回収ライン27内に流出させた後、
バルブ35を閉じ、ついで、切換バルブ36を閉じた後
、吸入バルブ37及び再回収ライン切換バルブ38を開
け、捕集タンク32a内の石綿屑を密閉タンク23内に
回収する。
Next, a process of collecting asbestos debris collected by the dust collecting means is performed, after opening the switching valve 35 and letting the water 31d stored in the first dust collecting device 31 flow out into the re-collection line 27.
After closing the valve 35 and then closing the switching valve 36, the suction valve 37 and the re-collection line switching valve 38 are opened to collect asbestos debris in the collection tank 32a into the closed tank 23.

以上の一工程を終えた後、再び、第1の集塵装置内31
に水を供給し、バルブ35,37.38を閉じ、バルブ
36.39を開けた状態で、石綿屑の回収処理を繰り返
し行う。
After completing the above step, the inside of the first dust collector 31
The asbestos waste collection process is repeated with the valves 35, 37, and 38 closed and the valves 36, 39 open.

所定の容器内に排出された泥状石綿屑は、セメントの凝
固作用により処理容器内で固形化し、最終処理場所に運
搬廃棄される。
The muddy asbestos waste discharged into a predetermined container is solidified within the processing container by the coagulation effect of cement, and is transported to a final processing site and disposed of.

なお、再回収工程を石綿屑吸引工程とセメント供給工程
の間に行ってもよい。
Note that the re-collection step may be performed between the asbestos waste suction step and the cement supply step.

発明の効果 本発明は、石綿屑を常圧下でセメントおよび水と混練し
て固形化させる従来例とは異なり、石綿繊維の中空部分
に入っている空気及び水分を追い出してセメントおよび
水を加えて固形化するものであるから、固形化した石綿
屑のブロック内には気泡及び水分が存在せず、したがっ
て、ブロックの放置下においてもブロック表面に石綿屑
の毛羽立ちがあられれず、石綿屑の飛散、拡散のおそれ
がない。
Effects of the Invention Unlike the conventional method in which asbestos waste is kneaded with cement and water under normal pressure to solidify it, the present invention expels the air and moisture contained in the hollow parts of asbestos fibers and adds cement and water. Since it solidifies, there are no air bubbles or moisture in the solidified asbestos waste block, and therefore, even if the block is left alone, the fluff of asbestos waste will not be formed on the block surface, and the asbestos waste will not scatter. There is no risk of spread.

なお、吸引された石綿屑はその再回収操作を行うことに
よって装置内で総て回収処理されるので、大気汚染の防
止に多大の効果を奏するものである。
Incidentally, all of the asbestos debris that has been sucked out is recovered and processed within the device by performing the re-collection operation, which is highly effective in preventing air pollution.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明のフローチャート、第2図は第1実施例
の移動車両に搭載された石綿屑回収処理装置の側面図、
第3図は第2図の平面図、第4図は第2実施例の模式図
、第5図は第2実施例を実施する車両の側面図、第6図
はその平面図である。 7・・・混練駆動軸(撹拌混練手段) 8.8′・・・混練羽根(撹拌混練手段)11、41・
・・排出口 2I・・・石綿屑回収処理装置 25・・・排気ライン 27・・・再回収ライン 31・・・第1の集塵装置 32・・・サイクロン式集塵装置 32a・・・捕集タンク 33・・・フィルタ弐a塵装置 2.22・・・石綿屑回収管 323・・・タンク 24・・・真空ポンプ 5・・・排気管 6.26・・・セメント供給管 第5図 第6図
FIG. 1 is a flowchart of the present invention, FIG. 2 is a side view of an asbestos waste collection and processing device mounted on a moving vehicle according to the first embodiment,
3 is a plan view of FIG. 2, FIG. 4 is a schematic diagram of the second embodiment, FIG. 5 is a side view of a vehicle implementing the second embodiment, and FIG. 6 is a plan view thereof. 7...Kneading drive shaft (stirring and kneading means) 8.8'...Kneading blades (stirring and kneading means) 11, 41.
...Discharge port 2I...Asbestos waste collection and processing device 25...Exhaust line 27...Re-collection line 31...First dust collector 32...Cyclone type dust collector 32a...Capture Collection tank 33... Filter 2 a dust device 2.22... Asbestos waste collection pipe 323... Tank 24... Vacuum pump 5... Exhaust pipe 6.26... Cement supply pipe Figure 5 Figure 6

Claims (3)

【特許請求の範囲】[Claims] (1)石綿屑をタンクに回収し、 前記石綿屑を前記タンク内において負圧下で水とともに
撹拌し、 さらにセメントを加えて前記石綿屑を負圧下で混練泥状
化し、 前記泥状化した石綿屑を前記タンクから容器内に排出し
前記容器内において固形化させることを特徴とする、 石綿屑回収固形化処理方法。
(1) Collect asbestos waste in a tank, stir the asbestos waste with water in the tank under negative pressure, further add cement and knead the asbestos waste under negative pressure to form a slurry, and process the slurry asbestos. A method for collecting and solidifying asbestos debris, characterized in that the debris is discharged from the tank into a container and solidified in the container.
(2)石綿屑を回収するタンクに前記石綿屑の撹拌混練
手段を設け、前記タンクに真空ポンプに連結した排気管
と、石綿屑回収管、給水管及びセメント供給管を接続し
、さらに開閉可能な排出口を設けたことを特徴とする、 石綿屑回収処理装置。
(2) A tank for collecting asbestos waste is provided with stirring and kneading means for the asbestos waste, and an exhaust pipe connected to a vacuum pump, an asbestos waste collection pipe, a water supply pipe, and a cement supply pipe are connected to the tank, and the tank can be further opened and closed. An asbestos waste collection and processing device characterized by having a discharge port.
(3)前記タンクから排気管に流入する石綿屑を収集し
前記タンクに戻す手段をさらに有する、請求項2の石綿
屑回収処理装置。
(3) The asbestos waste recovery and processing device according to claim 2, further comprising means for collecting asbestos waste flowing into the exhaust pipe from the tank and returning it to the tank.
JP63214797A 1988-08-31 1988-08-31 Method and apparatus for collecting and solidifying asbestos waste Expired - Lifetime JP2705803B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63214797A JP2705803B2 (en) 1988-08-31 1988-08-31 Method and apparatus for collecting and solidifying asbestos waste

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63214797A JP2705803B2 (en) 1988-08-31 1988-08-31 Method and apparatus for collecting and solidifying asbestos waste

Publications (2)

Publication Number Publication Date
JPH0263590A true JPH0263590A (en) 1990-03-02
JP2705803B2 JP2705803B2 (en) 1998-01-28

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ID=16661683

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP2705803B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0418974A (en) * 1990-05-12 1992-01-23 Higashi Nippon Unit Service Kk Disposing treatment of asbestos cement pipe and treating device used in this method
JP2007044676A (en) * 2005-08-12 2007-02-22 Yamazaki Jari Shoten:Kk Method and apparatus for treating asbestos-containing waste material
JP2007117909A (en) * 2005-10-28 2007-05-17 Kozo Yoshizawa Scattering asbestos treatment method, apparatus used for the method, and vehicle loaded with the apparatus
JP2008533951A (en) * 2006-05-09 2008-08-21 ビーエスイー カンパニー リミテッド Directional silicon condenser microphone with additional back chamber
JP2008272706A (en) * 2007-05-07 2008-11-13 Tobishima Corp Treatment method and treatment apparatus of waste such as asbestos-containing construction material
JP2012096155A (en) * 2010-11-01 2012-05-24 Chutoku Kenki Kk Asbestos-containing suspended matter burning/melting treatment device and method of burning/melting treatment for asbestos-containing suspended matter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11988044B2 (en) 2022-09-16 2024-05-21 Ted R. Dimitroff Excavation boring and shoring method and equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0433515A (en) * 1990-05-28 1992-02-04 Tokai Rubber Ind Ltd Pin hole repair method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0433515A (en) * 1990-05-28 1992-02-04 Tokai Rubber Ind Ltd Pin hole repair method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0418974A (en) * 1990-05-12 1992-01-23 Higashi Nippon Unit Service Kk Disposing treatment of asbestos cement pipe and treating device used in this method
JP2007044676A (en) * 2005-08-12 2007-02-22 Yamazaki Jari Shoten:Kk Method and apparatus for treating asbestos-containing waste material
JP2007117909A (en) * 2005-10-28 2007-05-17 Kozo Yoshizawa Scattering asbestos treatment method, apparatus used for the method, and vehicle loaded with the apparatus
JP2008533951A (en) * 2006-05-09 2008-08-21 ビーエスイー カンパニー リミテッド Directional silicon condenser microphone with additional back chamber
JP2010104006A (en) * 2006-05-09 2010-05-06 Bse Co Ltd Directional silicon capacitor microphone having additional back chamber
JP4738481B2 (en) * 2006-05-09 2011-08-03 ビーエスイー カンパニー リミテッド Directional silicon condenser microphone with additional back chamber
JP2008272706A (en) * 2007-05-07 2008-11-13 Tobishima Corp Treatment method and treatment apparatus of waste such as asbestos-containing construction material
JP4729530B2 (en) * 2007-05-07 2011-07-20 飛島建設株式会社 Processing method and processing equipment for asbestos-containing building materials
JP2012096155A (en) * 2010-11-01 2012-05-24 Chutoku Kenki Kk Asbestos-containing suspended matter burning/melting treatment device and method of burning/melting treatment for asbestos-containing suspended matter

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