JPH0741136B2 - How to backwash a ceramic filter - Google Patents
How to backwash a ceramic filterInfo
- Publication number
- JPH0741136B2 JPH0741136B2 JP62234850A JP23485087A JPH0741136B2 JP H0741136 B2 JPH0741136 B2 JP H0741136B2 JP 62234850 A JP62234850 A JP 62234850A JP 23485087 A JP23485087 A JP 23485087A JP H0741136 B2 JPH0741136 B2 JP H0741136B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- ceramic filter
- backwashing
- valve
- incinerator
- 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 - Lifetime
Links
- 239000000919 ceramic Substances 0.000 title claims description 36
- 239000007789 gas Substances 0.000 claims description 34
- 238000011001 backwashing Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 11
- 239000002910 solid waste Substances 0.000 claims description 4
- 239000000941 radioactive substance Substances 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 239000003546 flue gas Substances 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 2
- 239000002901 radioactive waste Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012857 radioactive material Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000002900 solid radioactive waste Substances 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、原子力発電所及び研究所等の放射性物質取扱
い施設において発生する可燃性雑固体廃棄物及び廃樹脂
等の放射性廃棄物の焼却炉からの排ガスを除塵するセラ
ミックフィルタの逆洗方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an incinerator for combustible miscellaneous solid waste and radioactive waste such as waste resin generated in radioactive material handling facilities such as nuclear power plants and laboratories. The present invention relates to a method for backwashing a ceramic filter for removing exhaust gas from a vehicle.
（従来の技術） 従来の排ガスを除塵するセラミックフィルタの逆洗方法
としては、例えば第２図に示すように焼却炉31の焼却を
停止した状態で、主セラミックフィルタ33の出口弁35を
全開にした後、予備のセラミックフィルタ37より排気し
てセラミックフィルタ内部を負圧にし、逆洗装置39から
急激に圧縮空気を圧送し、セラミックフィルタエレメン
ト41の表面に付着した焼却灰を剥離・落下させる方法が
知られていた。(Prior Art) As a conventional backwashing method of a ceramic filter for removing exhaust gas, for example, as shown in FIG. 2, the outlet valve 35 of the main ceramic filter 33 is fully opened with the incineration of the incinerator 31 stopped. After that, the interior of the ceramic filter is exhausted from the spare ceramic filter 37 to a negative pressure, and compressed air is suddenly pumped from the backwashing device 39 to remove and incinerate the incineration ash adhering to the surface of the ceramic filter element 41. Was known.
（発明が解決しようとする問題点） しかしながら、従来の方法では、逆洗時のために予備の
セラミックフィルタ37を用意して必要があり、スペース
を取るとともに配管も複雑になるという欠点があった。(Problems to be Solved by the Invention) However, in the conventional method, it is necessary to prepare a spare ceramic filter 37 for backwashing, which has a drawback that space is required and piping is complicated. .
本発明の目的は、予備のセラミックフィルタを用いるこ
となく逆洗を行うことができる逆洗方法を提供せんとす
るにある。An object of the present invention is to provide a backwashing method capable of backwashing without using a spare ceramic filter.
（問題点を解決するための手段） 本発明のセラミックフィルタの逆洗方法は、放射性物質
を含有する可燃性雑固体廃棄物等を焼却する焼却炉の直
後に連結され、排ガス導入口および排ガス排出口を有
し、内部にセラミックフィルタエレメントを収容し、排
ガス排出口の下流側にバルブを有し、セラミックフィル
タエレメントの下流側に逆洗用の空気導入口およびこれ
にバルブを介して連結された逆洗装置を具えるセラミッ
クフィルタを逆洗するにあたり、排ガスブロワにてフィ
ルタ装置内部を予め設定された負圧にした後、前記排ガ
ス排出口に設けられたバルブを全閉にし、バルブの全閉
にほぼ同期して逆洗装置を作動させて逆洗装置のバルブ
を開放し圧縮空気を噴出させて、フィルタ装置内部が負
圧にある状態でセラミックフィルタエレメントを逆洗す
るようにし、逆洗により発生したガスを排ガス導入口を
介して焼却炉に排出させることを特徴とする。(Means for Solving Problems) The method for backwashing a ceramic filter of the present invention is connected immediately after an incinerator for incinerating combustible miscellaneous solid waste containing radioactive substances, and is connected to an exhaust gas inlet and an exhaust gas exhaust. It has an outlet, contains a ceramic filter element inside, has a valve downstream of the exhaust gas outlet, and has an air inlet for backwashing downstream of the ceramic filter element and is connected to this through a valve. When backwashing a ceramic filter equipped with a backwash device, after setting the negative pressure inside the filter device with an exhaust gas blower to a preset negative pressure, fully close the valve provided at the exhaust gas discharge port, and fully close the valve. The backwash device is operated almost in synchronism with the above, the valve of the backwash device is opened, and compressed air is ejected. It is characterized in that the components are backwashed, and the gas generated by the backwashing is discharged to the incinerator through the exhaust gas inlet.
（作用） 本発明の逆洗方法では、排ガスブロワにてフィルタ装置
内部を負圧にした後排ガス排出口のバルブを開放して圧
縮空気を噴出しているため、フィルタ装置内部が負圧に
ある状態で圧縮空気を供給することができ、しかも供給
した空気は排ガス導入口から配管を通って焼却炉にもど
している。したがって、負圧状態のフィルタ装置内の容
積を逆洗用空気をフィルタ装置内に導入しても負圧が維
持できる程度にすることができるため、逆洗排気ダクト
を独自に設けることなく、且つ予備のフィルタ装置にて
逆洗用空気を吸収する必要がなくなる。排ガス供給口の
バルブを閉じてから圧縮空気を送出するまでの時間とし
ては、例えば約0.5秒程度であれば十分である。(Function) In the backwashing method of the present invention, the inside of the filter device is at a negative pressure because the exhaust gas blower makes the inside of the filter device have a negative pressure and then the valve of the exhaust gas outlet is opened to eject the compressed air. Compressed air can be supplied in this state, and the supplied air is returned to the incinerator from the exhaust gas inlet through a pipe. Therefore, since the volume of the negative pressure filter device can be maintained to such a degree that the negative pressure can be maintained even when the backwash air is introduced into the filter device, the backwash exhaust duct is not provided independently, and There is no need to use a backup filter device to absorb backwash air. About 0.5 seconds, for example, is sufficient as the time from the closing of the valve of the exhaust gas supply port until the delivery of compressed air.
（実施例） 第１図は本発明のセラミックフィルタの逆洗方法を実施
するシステムの一例を示す線図である。(Example) FIG. 1 is a diagram showing an example of a system for carrying out the backwashing method for a ceramic filter of the present invention.
このシステムの通常の作業において、廃HEPAフィルタ、
可燃性雑固体廃棄物、廃樹脂、廃油等の放射性廃棄物
は、投入機またはフィーダ等により焼却炉11供給され、
焼却炉11において燃焼される。燃焼ガスは、セラミック
フィルタ13を通って除塵される。また焼却炉11およびセ
ラミックフィルタ13で発生する焼却灰およびセラミック
フィルタ13で発生する焼却灰および２次廃棄物は、適切
に処理した後廃棄されている。In normal operation of this system, waste HEPA filter,
Radioactive waste such as combustible miscellaneous solid waste, waste resin, waste oil, etc. is supplied to the incinerator 11 by the input machine or feeder,
It is burned in the incinerator 11. Combustion gas passes through the ceramic filter 13 to remove dust. Further, the incinerated ash generated in the incinerator 11 and the ceramic filter 13, the incinerated ash generated in the ceramic filter 13 and the secondary waste are appropriately treated and then discarded.
次に、セラミックフィルムタ13で除塵された約500〜600
℃の燃焼ガスは、空気混合段14にて約２倍量の空気と混
合されて排ガスフィルタ15の耐熱温度約300℃以下にさ
れた後、排ガスフィルタ15で再除塵し、再除塵後の排ガ
スを排ガスブロワ16で引いて大気中へ放出している。Next, about 500-600 dust removed by the ceramic film
The combustion gas at ℃ is mixed with about twice the amount of air in the air mixing stage 14 and the heat-resistant temperature of the exhaust gas filter 15 is set to about 300 ° C. or less, and then the exhaust gas filter 15 re-dusts the exhaust gas after re-dusting. Is exhausted by the exhaust gas blower 16 into the atmosphere.
ところで、セラミックフィルタ13は、本願人の特許出願
（特開昭62-39793号）明細書から既知であるように、下
部に排ガス導入口17、上側部に排ガス排出口19、さらに
上部に逆洗用の空気導入口21を有する耐火物で内張りし
た缶体内に約100本の有底円筒状のセラミックフィルタ
エレメント23を懸架した構成となっている。このセラミ
ックフィルタ13に、放射性廃棄物を焼却する焼却炉から
の燃焼排ガスが排ガス導入口17から供給され、セラミッ
クフィルタエレメント23をその外面から内面へ通過する
ことにより放射能で汚染されたダスト等がろ過され、そ
の後排ガス排出口19から外部に排出される。By the way, as is known from the specification of the applicant of the present invention (Japanese Patent Laid-Open No. 62-39793), the ceramic filter 13 has an exhaust gas inlet 17 at the lower portion, an exhaust gas outlet 19 at the upper portion, and backwashing on the upper portion. The structure is such that about 100 cylindrical ceramic filter elements 23 with a bottom are suspended in a can body lined with a refractory material having an air introduction port 21 for air. Combustion exhaust gas from an incinerator that incinerates radioactive waste is supplied to this ceramic filter 13 from an exhaust gas inlet 17, and dust and the like contaminated with radioactivity by passing through the ceramic filter element 23 from its outer surface to its inner surface. It is filtered and then discharged from the exhaust gas discharge port 19 to the outside.
セラミックフィルタエレメント23に目詰まりが生じ、導
入口側スペースと排出口側スペースとの間の差圧が約60
0mmAq程度になる場合には支持プレートの浮き上がりを
防止するため、逆洗を実施してフィルタエレメント23の
再生化を行う必要がある。この逆洗方法について以下に
説明する。The ceramic filter element 23 is clogged and the differential pressure between the inlet side space and the outlet side space is about 60.
When it becomes about 0 mmAq, it is necessary to carry out backwashing to regenerate the filter element 23 in order to prevent the support plate from floating. This backwashing method will be described below.
まず焼却炉の焼却作業を停止した状態でセラミックフィ
ルタ13の内部および焼却炉11の内部からなる系内を排ガ
スブロワ16にて例えば−1000mmAq程度の負圧にし、次い
で排ガス排出口19を全開にし、この全開にした際に排出
口19に設けられたバルブ25からの検知信号が逆洗装置27
に送られ、逆洗装置27のバルブ29を開き、セラミックフ
ィルタエレメントの２次側から筒状体の内周側から外周
側へ圧縮空気を瞬間的に流すことにより、フィルタエレ
メント表面の付着灰を剥離若しくは落下させて再生処理
ができる。ところで、セラミックフィルタ13に供給され
フィルタエレメント23を通過した圧縮空気は排ガス導入
口から配管を通って焼却炉内に排出される。First, in a state where the incineration work of the incinerator is stopped, the inside of the system consisting of the inside of the ceramic filter 13 and the incinerator 11 is set to a negative pressure of, for example, about -1000 mmAq by the exhaust gas blower 16, and then the exhaust gas discharge port 19 is fully opened. When fully opened, the detection signal from the valve 25 provided at the outlet 19 is the backwash device 27.
The valve 29 of the backwashing device 27 is opened, and compressed air is momentarily flown from the secondary side of the ceramic filter element to the outer peripheral side of the cylindrical body to remove the adhered ash on the filter element surface. It can be recycled by peeling or dropping. By the way, the compressed air supplied to the ceramic filter 13 and passing through the filter element 23 is discharged into the incinerator from the exhaust gas introduction port through the pipe.
本発明は上記実施例に限定されるものではなく、当業者
であれば、本発明の範囲内で種々に変形若しくは変更が
可能である。The present invention is not limited to the above embodiments, and those skilled in the art can make various modifications or changes within the scope of the present invention.
（発明の効果） 以上の説明から明らかなように、本発明のセラミックフ
ィルタの逆洗方法によれば、逆洗用の追加的な配管およ
びセラミックフィルタ等のフィルタ装置を用いることな
く、逆洗を好適に行うことができる。したがって、装置
配置を簡略化することができるとともに、コスト的にも
廉価となる効果を奏するものである。(Effects of the Invention) As is apparent from the above description, according to the method of backwashing a ceramic filter of the present invention, backwashing can be performed without using an additional pipe for backwashing and a filter device such as a ceramic filter. It can be suitably performed. Therefore, the device arrangement can be simplified and the cost can be reduced.
第１図は本発明のセラミックフィルタの逆洗方法を示す
線図、 第２図は従来のセラミックフィルタの逆洗方法を示す線
図である。 11……焼却炉、13……セラミックフィルタ 15……排ガスフィルタ、16……排ガスブロワ 17……排ガス導入口、19……排ガス排出口 21……空気導入口、23……フィルタエレメント 25,29……バルブ、27……逆洗装置FIG. 1 is a diagram showing a backwashing method of a ceramic filter of the present invention, and FIG. 2 is a diagram showing a backwashing method of a conventional ceramic filter. 11 …… Incinerator, 13 …… Ceramic filter 15 …… Exhaust gas filter, 16 …… Exhaust gas blower 17 …… Exhaust gas inlet, 19 …… Exhaust gas outlet 21 …… Air inlet, 23 …… Filter element 25,29 …… Valve, 27 …… Backwash device
Claims (1)
等を焼却する焼却炉の直後に連結され、排ガス導入口お
よび排ガス排出口を有し、内部にセラミックフィルタエ
レメントを収容し、排ガス排出口の下流側にバルブを有
し、セラミックフィルタエレメントの下流側に逆洗用の
空気導入口およびこれにバルブを介して連結された逆洗
装置を具えるフィルタ装置のセラミックフィルタを逆洗
するにあたり、排ガスブロワにてフィルタ装置内部を予
め設定された負圧にした後、前記排ガス排出口に設けら
れたバルブを全閉にし、バルブの全閉にほぼ同期して逆
洗装置を作動させて逆洗装置のバルブを開放し圧縮空気
を噴出させて、フィルタ装置内部が負圧にある状態でセ
ラミックフィルタエレメントを逆洗するようにし、逆洗
により発生したガスを排ガス導入口を介して焼却炉に排
出させることを特徴とするセラミックフィルタの逆洗方
法。1. An exhaust gas inlet and an exhaust gas outlet, which are connected immediately after an incinerator for incinerating a combustible miscellaneous solid waste containing a radioactive substance, and which house a ceramic filter element therein, and exhaust gas exhaust When backwashing a ceramic filter of a filter device that has a valve on the downstream side of the outlet and an air inlet for backwashing on the downstream side of the ceramic filter element and a backwashing device connected to this through a valve After making the inside of the filter device a preset negative pressure with the exhaust gas blower, fully close the valve provided at the exhaust gas discharge port, and operate the backwashing device almost in synchronism with the full closing of the valve to perform the reverse operation. Open the valve of the washing device to eject compressed air so that the ceramic filter element is backwashed while the inside of the filter device is under negative pressure. Backwash method of a ceramic filter, characterized in that discharging into the incinerator through a flue gas inlet of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62234850A JPH0741136B2 (en) | 1987-09-21 | 1987-09-21 | How to backwash a ceramic filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62234850A JPH0741136B2 (en) | 1987-09-21 | 1987-09-21 | How to backwash a ceramic filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6480415A JPS6480415A (en) | 1989-03-27 |
| JPH0741136B2 true JPH0741136B2 (en) | 1995-05-10 |
Family
ID=16977334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62234850A Expired - Lifetime JPH0741136B2 (en) | 1987-09-21 | 1987-09-21 | How to backwash a ceramic filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0741136B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0364829U (en) * | 1989-10-31 | 1991-06-25 | ||
| CN102974177A (en) * | 2012-12-11 | 2013-03-20 | 合肥水泥研究设计院 | Heat compensation device for high-temperature bag dust remover pulse spraying system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5128262A (en) * | 1974-09-02 | 1976-03-10 | Marugen Katan Kk | |
| JPS609843B2 (en) * | 1978-10-31 | 1985-03-13 | 日本碍子株式会社 | High temperature dust remover with backwashing device |
| JPS6128416A (en) * | 1984-07-18 | 1986-02-08 | Goto Shoji Kk | Furnace having dust collection function |
-
1987
- 1987-09-21 JP JP62234850A patent/JPH0741136B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6480415A (en) | 1989-03-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
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