JPS58128120A - Method for reducing volume of high-performance air filter by incineration - Google Patents

Method for reducing volume of high-performance air filter by incineration

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Publication number
JPS58128120A
JPS58128120A JP56209608A JP20960881A JPS58128120A JP S58128120 A JPS58128120 A JP S58128120A JP 56209608 A JP56209608 A JP 56209608A JP 20960881 A JP20960881 A JP 20960881A JP S58128120 A JPS58128120 A JP S58128120A
Authority
JP
Japan
Prior art keywords
fibers
incineration
diameter
filter
volume
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.)
Pending
Application number
JP56209608A
Other languages
Japanese (ja)
Inventor
Yoshimi Oshitari
忍足 義見
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP56209608A priority Critical patent/JPS58128120A/en
Publication of JPS58128120A publication Critical patent/JPS58128120A/en
Pending legal-status Critical Current

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  • Processing Of Solid Wastes (AREA)

Abstract

PURPOSE:To reduce the volume of a filter by incineration, by using combustible fibers instead of glass fibers used for holding the strength of filter paper of a high-performance air filter. CONSTITUTION:High-performance filter paper used for an air filter used in factories, etc. which handle radioactive materials, is constituted of fine glass fibers having the level of 20-50% by weight and 0.3-0.15mu diameter and of large glass fibers having the level of 50-80% by weight and 0.5mu and 1-10mu diameter. Among these fibers, the large-diameter glass fibers are used for holding the strength, but chemical fibers or natural fibers can be used instead of the glass fibers when the diameter is >=1mu, then such combustible fibers having >=1mu diameter are used. Thus the volume of radioactive waste is remarkably reduced because the weight of residuum of filter paper manufactured in such manner, is reduced after incineration treatment.

Description

【発明の詳細な説明】 本発明は焼却処理による高性能空気濾過器の容積減縮方
法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for reducing the volume of a high performance air filter by incineration.

放射性物質を取扱う事業所、例えば原子力発電所、原子
炉燃料処理工場その他放射性物質を取扱う実験室などに
おいては、放射性粉塵の外部への拡散を阻止することが
必要である。そこで集塵効率が短径0.8μの粉塵に対
して99.97%以上の高性能濾過紙を用いた空気槽過
器を使用し7て、室内の換気、排気などが行われている
In workplaces that handle radioactive materials, such as nuclear power plants, reactor fuel processing plants, and laboratories that handle radioactive materials, it is necessary to prevent radioactive dust from dispersing to the outside. Therefore, an air tank filter using high-performance filter paper, which has a dust collection efficiency of 99.97% or more for dust with a short diameter of 0.8 μm, is used to ventilate and exhaust the room.

この場合空気濾過器はその圧力損失が当初の2倍程度に
達したことを目安として取換えられるが、廃棄される空
気濾過器は放射性物質により汚染されていることから、
そのま\廃棄することはできない。そのため仲の放射性
廃棄物と共に一定の場所に保管されて特権゛するが、そ
の廃棄方法が確立されていない現状においては、その保
管量は年々増加の一途を辿り、その処理に大きな困難を
来している状況にある。従ってその容積の減縮が強く要
求されている。
In this case, the air filter will be replaced when the pressure loss reaches about twice the original value, but since the air filter to be discarded is contaminated with radioactive materials,
It cannot be disposed of as is. For this reason, it is privileged to be stored in a certain place along with other radioactive waste, but in the current situation where there is no established method for disposing of it, the amount of stored waste is increasing year by year, creating great difficulties in its disposal. I am in a situation where I am. Therefore, there is a strong need to reduce the volume.

そこで従来から少しでも容積を減縮しようとして各種の
努力がなされており、空気濾過器の場合には圧潰方法や
焼却による方法が提案され実施されている。例えば焼却
処理の場合には、図に示す従来使用されている高性能空
気濾過器jlJち金属製の波形間隔板(1)を挾みこん
で波形に折曲げて構成した高性能濾過紙(2)を、金属
性の枠体(3)内に収容して形成された空気濾過器では
、間隔板(1)および枠体(3)を可燃物例えば合成樹
脂材や木質系材により構成して焼却することにより、廃
棄物量を少なくスる方法がとられている。しかし周知の
ように99.97%以上の高集塵効率の実現のためには
、相当細い繊維を濾過紙の材料として用いる必要があり
、そのためにはどうしても硝子1II1.#の使用が必
須である。従って焼却処理によって間隔板、枠体は燃え
るが、濾過紙は燃えることなく塊りとなって残るため零
にすることは不可能であって、その量は縦、横610m
、奥行800fl、空気処理量80m”/minの標準
形のもので、1台当り2に1程度の大きなものとなる。
Therefore, various efforts have been made to reduce the volume as much as possible, and in the case of air filters, crushing methods and incineration methods have been proposed and implemented. For example, in the case of incineration, a high-performance filter paper (2) constructed by sandwiching metal corrugated spacing plates (1) and folding them into a corrugated shape is used in the conventionally used high-performance air filter shown in the figure. In an air filter formed by housing the spacer in a metal frame (3), the spacer plate (1) and the frame (3) are made of combustible materials such as synthetic resin or wood-based materials. This method is used to reduce the amount of waste. However, as is well known, in order to achieve a high dust collection efficiency of 99.97% or more, it is necessary to use fairly thin fibers as the material for the filter paper, and for this purpose, glass 1II1. Use of # is mandatory. Therefore, although the spacer plate and frame burn during the incineration process, the filter paper does not burn and remains as a lump, so it is impossible to reduce it to zero.
, a standard type with a depth of 800 fl and an air throughput of 80 m''/min, which is about 1 in 2 large per unit.

本発明は更に大きな容積の減縮を可能とする焼却による
濾過器の容積の減縮方法を提案し、廃棄物の処理の困難
を緩和できるようにしたものである。次に図面を用いて
本発明の詳細な説明する。
The present invention proposes a method for reducing the volume of a filter by incineration, which enables an even larger reduction in volume, thereby making it possible to alleviate the difficulties in waste disposal. Next, the present invention will be explained in detail using the drawings.

調査によれば高性能濾過器における高性能濾過紙は、2
0〜50重量%を占める0、8〜0.15μ程度の細い
径の硝子繊維と、その残りの0.5μおよびl〜10μ
径程度の太い硝子線維とによって構成されている。そし
て細い径(0,8〜0.15μ程度)の硝子繊維が紙の
密度を高くして、99.97%以上の高い集塵効率を実
現し、太い径の硝子繊維が濾過紙の機械的強度を維持す
るため′に混入されており、これは集塵効率には殆ど関
与しない。
According to research, high-performance filter paper in high-performance filters has two
Glass fibers with a small diameter of about 0, 8 to 0.15μ account for 0 to 50% by weight, and the remaining 0.5μ and 1 to 10μ
It is composed of hyaline fibers as thick as the diameter. Glass fibers with a small diameter (approximately 0.8 to 0.15μ) increase the density of the paper, achieving a high dust collection efficiency of over 99.97%, while glass fibers with a large diameter increase the mechanical strength of the filter paper. It is mixed in to maintain strength, and this has little effect on dust collection efficiency.

従りてこれから通常の使用状態において所定以上の機械
的強度が満足されさえすれば、濾過紙構成の全硝子繊維
のうちの強度保持用の太い硝子線維は、可燃性繊維例え
ば化学繊維や天然繊維に代えることができるので、そう
すれば焼却処理による使用済み空気濾過器の容積は更に
著しく減縮され、空気噴過器にもとづく放射性廃棄物量
の著減を実現できる。
Therefore, from now on, as long as a specified level of mechanical strength is satisfied under normal usage conditions, the thick glass fibers for maintaining strength among all the glass fibers in the filter paper structure should be replaced by combustible fibers such as chemical fibers and natural fibers. In this way, the volume of the used air filter due to incineration treatment can be further significantly reduced, and the amount of radioactive waste generated by the air injector can be significantly reduced.

本発明は上記の着想にもとづきなされたものであるが、
調査研究の結果径が1μ以上の繊維は硝子繊維によらな
くても、化学繊維や天然繊維(二よって実現でき、また
これを強度保持用として用いた濾過紙は通常の使用状態
における風圧に充分耐えて集塵作用を行いうろことが明
らかになった。
The present invention was made based on the above idea, but
As a result of research and research, fibers with a diameter of 1μ or more can be created using chemical fibers or natural fibers (2) without using glass fibers, and filter paper using these fibers for strength retention is sufficient to withstand wind pressure under normal usage conditions. It was revealed that the dust was able to withstand and collect dust.

更に化学繊維によっては得ることができない20〜50
重量%の1μ以下の細い径の繊維のみを硝子繊維とし、
残る1μ以上の太い径の繊維を化学繊維とする濾過紙で
は、焼却処理によって次に説明するような大幅な容積の
減縮が可能となることが明らかとなった。その実験結果
の一例を示すと、1μ径のポリスチロン繊維20重量係
と、0.8〜0.15μ径の硝子繊維80重量%とを、
少量の接着剤と共に混合して抄紙機により抄紙して作っ
た濾過紙に、ポリスチレン製の波形間隔板を挾みこんで
折曲げてこれを外形寸法61Qsi+X610m+X3
QOmのポリスチレン製枠体に収容した、空気処理容量
30 n? / m i n  の濾過器の場合、焼却
処理後の残滓は従来濾過器の2に)に対して0.4Kj
’になった。これを焼却処理前と処理後の容積として比
較すれば、焼却処理前の容積は枠体の外形寸法によって
定まる61 ff1X 5 l cmX 3 Q cI
n= l 11630cIIL3であるが、これに対し
焼却処理後にオケル残滓重10.4 KPハ、厚さ1.
4crIL1縦、横10crrL、即ち1.4x10X
10=140cIn30)容積に相当するから、減容積
比は11161)7140卒797となる。従って焼却
により空気濾過器を著しく小さい塊りとして、放射性廃
棄物の容積を著しく減縮できることが判る。なおこの濾
過器の集塵効率は従来と同様、0,8μの粉塵に対して
99.97%以上、また圧力損失として2.5cm/s
ecの通風速により15〜20MI(水柱)が得られた
Furthermore, 20 to 50, which cannot be obtained depending on chemical fibers.
Only fibers with a thin diameter of 1μ or less by weight are considered glass fibers,
It has become clear that in a filter paper in which the remaining fibers with a large diameter of 1 μm or more are made of chemical fibers, the volume can be significantly reduced by incineration treatment as described below. To give an example of the experimental results, 20% by weight of polystyrene fibers with a diameter of 1 μm and 80% by weight of glass fibers with a diameter of 0.8 to 0.15μ,
A polystyrene corrugated spacing plate is inserted into a filter paper made by mixing it with a small amount of adhesive and paper-making using a paper machine, and then bending it to form a filter paper with external dimensions of 61Qsi+X610m+X3.
Air handling capacity 30 n? housed in a QOm polystyrene frame. /min filter, the residue after incineration is 0.4Kj compared to the conventional filter (2).
'Became. Comparing this as the volume before and after incineration, the volume before incineration is determined by the external dimensions of the frame 61 ff1X 5 l cmX 3 Q cI
n=l 11630cIIL3, but on the other hand, after incineration treatment, the ocher residue weight is 10.4 KP, and the thickness is 1.
4crIL1 length, 10crrL horizontally, i.e. 1.4x10X
Since 10=140cIn30) volume, the volume reduction ratio is 11161)7140 797. Therefore, it can be seen that the volume of radioactive waste can be significantly reduced by incinerating the air filter into extremely small pieces. The dust collection efficiency of this filter is the same as before, 99.97% or more for 0.8μ dust, and the pressure loss is 2.5cm/s.
15-20 MI (water column) was obtained with an air flow rate of ec.

以上の説明から明らかなように、本発明によれば放射性
物質を取扱う事業所において使用される空気濾過器にも
とづく廃棄物の容積を著しく減縮できるもので、実用上
の効果は著しいものがある。
As is clear from the above description, according to the present invention, the volume of waste produced by air filters used in offices that handle radioactive materials can be significantly reduced, and the practical effects are significant.

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

図は高性能空気濾過器の斜視図である。 (1)・・・・波形間隔板、 (2)・・・・高性能濾
過器、(3)・・・・枠体。 特許出願人  忍 足 義 見 代理人 大塊 学 外1名
The figure is a perspective view of a high performance air filter. (1)... Corrugated spacing plate, (2)... High performance filter, (3)... Frame. Patent applicant: Yoshimi Shinobu, agent: Daibutsu, 1 person from outside the university

Claims (1)

【特許請求の範囲】[Claims] 硝子線維により作られた濾過紙を用いた高性能空気濾過
器において、上記濾過紙の強度保持用硝子線維を化学繊
維や天然繊維のような可燃性繊維に代えることによって
、焼却処理による濾過器の容積減縮を図ることを特徴と
する焼却による高性能空気濾過器の容積減縮方法。
In high-performance air filters that use filter paper made of glass fibers, by replacing the glass fibers that maintain the strength of the filter paper with flammable fibers such as chemical fibers or natural fibers, it is possible to reduce the strength of the filter by incineration. A method for reducing the volume of a high-performance air filter by incineration, which is characterized by reducing the volume.
JP56209608A 1981-12-28 1981-12-28 Method for reducing volume of high-performance air filter by incineration Pending JPS58128120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56209608A JPS58128120A (en) 1981-12-28 1981-12-28 Method for reducing volume of high-performance air filter by incineration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56209608A JPS58128120A (en) 1981-12-28 1981-12-28 Method for reducing volume of high-performance air filter by incineration

Publications (1)

Publication Number Publication Date
JPS58128120A true JPS58128120A (en) 1983-07-30

Family

ID=16575618

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56209608A Pending JPS58128120A (en) 1981-12-28 1981-12-28 Method for reducing volume of high-performance air filter by incineration

Country Status (1)

Country Link
JP (1) JPS58128120A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007225499A (en) * 2006-02-24 2007-09-06 Japan Atomic Energy Agency Exhaust gas filter under radiation environment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5336120A (en) * 1976-09-16 1978-04-04 Fujitsu Ltd Information transfer system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5336120A (en) * 1976-09-16 1978-04-04 Fujitsu Ltd Information transfer system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007225499A (en) * 2006-02-24 2007-09-06 Japan Atomic Energy Agency Exhaust gas filter under radiation environment
JP4724018B2 (en) * 2006-02-24 2011-07-13 独立行政法人 日本原子力研究開発機構 Exhaust filter under radiation environment

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