JPS59219619A - Burning method for sludge - Google Patents
Burning method for sludgeInfo
- Publication number
- JPS59219619A JPS59219619A JP9461383A JP9461383A JPS59219619A JP S59219619 A JPS59219619 A JP S59219619A JP 9461383 A JP9461383 A JP 9461383A JP 9461383 A JP9461383 A JP 9461383A JP S59219619 A JPS59219619 A JP S59219619A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- combustion chamber
- burning
- fluidized bed
- air
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/005—Fluidised bed combustion apparatus comprising two or more beds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/30—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having a fluidised bed
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Gasification And Melting Of Waste (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は下水などの汚泥を処理する汚泥の焼成方法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a sludge firing method for treating sludge such as sewage.
近年、あらゆる産業分野において廃棄物の量は年々増加
を続け、その処理、処分は大きな社会問題となってきて
いる。例えば下水に関しては各処理プロセスから発生す
る汚泥の処理は、直接あるいは焼却した後埋立処分が行
われているが、二次公害や埋立地の入手難などから、埋
立処分ができなくなってきているのが現状である。この
ため。In recent years, the amount of waste has continued to increase year by year in all industrial fields, and its treatment and disposal have become a major social problem. For example, in the case of sewage, the sludge generated from each treatment process is disposed of directly or incinerated and then disposed of in a landfill, but due to secondary pollution and difficulty in obtaining land for landfill, it is becoming impossible to dispose of the sludge in a landfill. is the current situation. For this reason.
これらの諸問題を解決するために、前記汚泥を資源とし
て利用することが検討されるようになり。In order to solve these problems, consideration has been given to using the sludge as a resource.
資源化するだめのいくつかの方法が提案されるに至った
。Several methods have been proposed for recycling.
前記方法としては汚泥焼却灰から人工軽量骨材を形成す
るもの、あるいは汚泥を部分燃焼したものを焼成し骨材
を形成するものがある。すなわち前者においては、汚泥
を先ず乾燥させて焼却し。As the above-mentioned method, there is a method in which artificial lightweight aggregate is formed from sludge incineration ash, and a method in which partially combusted sludge is calcined to form aggregate. In the former case, the sludge is first dried and then incinerated.
次いで造粒した後に焼成している。まだ後者においては
汚泥を先ず乾燥させて部分燃焼し１次いで造粒した後に
焼成している。これらの方法において、焼成前に汚泥を
焼却あるいは部分燃焼させているのは、直接焼成すると
発熱量が１０００〜５０００ＫｍｌΔＣｇ−Ｄ８ と
なることによシ、汚泥が融着現象を起こしてしまうから
である。このため従来１個別に配置された二つの炉を使
用し、汚泥の焼成を行っていた。Next, it is granulated and then fired. In the latter method, the sludge is first dried, partially combusted, then granulated, and then fired. In these methods, the sludge is incinerated or partially combusted before calcination because direct calcination results in a calorific value of 1000 to 5000 KmlΔCg-D8, which causes the sludge to coalesce. . For this reason, sludge has conventionally been burned using two separately placed furnaces.
しかしながらこのように個別に配置された二つの炉を使
用する従来の汚泥の焼成方法においては。However, in this conventional sludge burning method using two separately arranged furnaces.
それぞれの炉から排出される排ガスは有効に利用されて
おらず必ずしも熱効率はよいものではないという不具合
があった。There was a problem in that the exhaust gas discharged from each furnace was not used effectively and the thermal efficiency was not necessarily good.
本発明はこのような事情に鑑みなされたもので。 The present invention was made in view of these circumstances.
汚泥を二つの燃焼室が上下に連設された焼成炉ので簡単
な構成によシ、熱効率の向上がはかれる汚泥の焼成方法
を提供するものである。The present invention provides a method for burning sludge, which has a simple structure using a sludge burning furnace in which two combustion chambers are arranged one above the other, and which can improve thermal efficiency.
以下、その構成等を図に示す実施例によシ詳細に説明す
る。Hereinafter, the configuration and the like will be explained in detail with reference to the embodiment shown in the drawings.
第１図は本発明に係る汚泥の焼成方法を説明するために
、汚泥の流れは実線を用いて空気の流れは破線を用いて
示す系統図で、同図において符号１で示すものは例えば
パドルミキサーなどの混線造粒機を示す。先ずこの混練
造粒機１に下水などの各処理プロセスから発生した下水
汚泥を高分子添加により脱水させた汚泥２を供給する。Fig. 1 is a system diagram in which the flow of sludge is shown using solid lines and the flow of air is shown using broken lines, in order to explain the sludge firing method according to the present invention. Indicates a mixed wire granulator such as a mixer. First, this kneading and granulating machine 1 is supplied with sludge 2 obtained by dewatering sewage sludge generated from various treatment processes such as sewage by adding a polymer.
次いでこの汚泥２を前記混練造粒機１により造粒した後
に１例えば流動乾燥機などの乾燥機３に供給し乾燥する
。実施例においては前記汚泥２は発熱量３５００ Ｋｍ
ｔ／ｋｇ−ＤＢ 、水分７８％程度であシ、前記乾燥を
水分量が５％以下とするように行うために。Next, this sludge 2 is granulated by the kneading and granulating machine 1, and then supplied to a dryer 3, such as a fluidized fluidized dryer, for drying. In the example, the sludge 2 has a calorific value of 3500 Km.
t/kg-DB and a moisture content of approximately 78%, in order to carry out the drying so that the moisture content is 5% or less.
乾燥機３から排出される乾燥汚泥４の一部を前記汚泥２
０重量比３倍の割合で混線造粒機１にもどしている。そ
の結果乾燥汚泥４は粒子径が１〜６間発熱量が３２００
ＫＤ１ｔ／に９− Ｄ ８程度となっている。A part of the dried sludge 4 discharged from the dryer 3 is converted into the sludge 2.
It is returned to the mixed wire granulator 1 at a ratio of 3 times the zero weight ratio. As a result, dry sludge 4 has a particle size of 1 to 6 and a calorific value of 3200.
KD1t/ is about 9-D8.
５は造粒および乾燥させた乾燥汚泥４を焼成する二つの
燃焼室を備えた焼成炉で、この焼成炉５は第２図に示す
ように上部燃焼室６と下部燃焼室Ｔとが流動床用口ざら
８を介して上下に連設されている。前記上部燃焼室６に
は前記流動床用口ざら８の上方に、乾燥汚泥４を供給す
るだめの供給管９が取付けられている。１０はこれら二
つの燃焼室を連通し、上部燃焼室６に供給された乾燥汚
泥４を降下させ、下部燃焼室Ｔの流動床用口ざら１１上
に供給するための下降管である。１２および１３は流動
床用口ざら８および１１上に流動層を形成するだめの空
気を供給する空気供給管である。また前記上部燃焼室６
の上方には排ガスを排出する排出管１４が取付けられる
と共に、未燃分を焼成させる空気を供給する空気供給管
１５が取付けられている。１６は下部燃焼室７から焼結
物を取出すための排出管である。Reference numeral 5 denotes a firing furnace equipped with two combustion chambers for firing the granulated and dried dried sludge 4. As shown in FIG. They are vertically connected via a spout 8. A supply pipe 9 for supplying dried sludge 4 is attached to the upper combustion chamber 6 above the fluidized bed opening 8. Reference numeral 10 denotes a downcomer pipe that communicates these two combustion chambers and causes the dried sludge 4 supplied to the upper combustion chamber 6 to descend and supply it onto the fluidized bed opening 11 of the lower combustion chamber T. Reference numerals 12 and 13 are air supply pipes for supplying air to form a fluidized bed on the fluidized bed openings 8 and 11. In addition, the upper combustion chamber 6
An exhaust pipe 14 for discharging exhaust gas is installed above the exhaust gas, and an air supply pipe 15 for supplying air for burning unburned substances is installed. 16 is a discharge pipe for taking out the sintered material from the lower combustion chamber 7.
前記乾燥汚泥４を供給管９から上部燃焼室６内に供給し
１部分燃焼させる。すなわち、空気供給管１２から流動
床用口ざら８に供給される焼成用空気１７によシ乾燥汚
泥４を流動させ、流動層である部分燃焼ゾーン１８が形
成される。その後、この汚泥を下降管１０を降下させて
下部燃焼室７に供給し焼成させる。ここで前記汚泥の量
は下降管１０に付設された調整装置１９によ＃）調整さ
れ。The dried sludge 4 is supplied from the supply pipe 9 into the upper combustion chamber 6 and partially combusted. That is, the dry sludge 4 is fluidized by the firing air 17 supplied from the air supply pipe 12 to the fluidized bed nozzle 8, and a partial combustion zone 18, which is a fluidized bed, is formed. Thereafter, this sludge is lowered down the downcomer pipe 10, supplied to the lower combustion chamber 7, and burned. Here, the amount of sludge is adjusted by a regulating device 19 attached to the downcomer pipe 10.
空気供給管１３から流動床用口ざら１１に供給される焼
成用空気１７によシ、流動層である焼成ゾーン１９が形
成される。なお未燃分は上部燃焼室６の上方に形成され
た未燃分焼成ゾーン２０で焼成される。焼成温度、換言
すれば前記焼成ゾーン１９の温度は１１００〜１２５０
°Ｃで、焼成された強固な焼結品は排出管１６から焼成
炉５の外部に取出される。一方、下部燃焼室Ｔの焼成排
ガスは上部燃焼室６に流入し、この上部燃焼室６の燃焼
排ガスと共に排ガス２１′として排出され、図示しない
排ガス処理工程へ直接、あるいは乾燥機３の熱源として
利用された後に送出される。The firing air 17 supplied from the air supply pipe 13 to the fluidized bed opening 11 forms a firing zone 19 which is a fluidized bed. Note that the unburned matter is burned in an unburned matter burning zone 20 formed above the upper combustion chamber 6. The firing temperature, in other words, the temperature of the firing zone 19 is between 1100 and 1250.
℃, the fired, strong sintered product is taken out of the firing furnace 5 through the discharge pipe 16. On the other hand, the combustion exhaust gas in the lower combustion chamber T flows into the upper combustion chamber 6 and is discharged together with the combustion exhaust gas in the upper combustion chamber 6 as exhaust gas 21', and is used directly for an exhaust gas treatment process (not shown) or as a heat source for the dryer 3. is sent after the
このように構成された汚泥の焼成方法においては、造粒
および乾燥させた汚泥を先ず部分燃焼させ、その後に焼
成して強固な焼結品を得ることができる。！た部分燃焼
と焼成のだめの二つの燃焼室を流動床用口ざら８を介し
て上下に連設しているので、上部燃焼室６内の汚泥を自
重によシ下部燃焼室７に供給することができ、下部燃焼
室１の焼成ガス排ガスを上部燃焼室６に流入させ部分燃
焼用として用いることができる。In the sludge firing method configured as described above, the granulated and dried sludge is first partially combusted and then fired to obtain a strong sintered product. ! Since two combustion chambers, one for partial combustion and one for sintering, are connected vertically via the fluidized bed opening 8, the sludge in the upper combustion chamber 6 can be supplied to the lower combustion chamber 7 by its own weight. The combustion gas exhaust gas from the lower combustion chamber 1 can be flowed into the upper combustion chamber 6 and used for partial combustion.
なお上記実施例においては乾燥機３から排出された乾燥
汚泥４の一部を混練造粒機１にもどすようにしているが
本発明はこれに限定されるものではない。例えば汚泥２
を発熱量調整するだめに。In the above embodiment, a part of the dried sludge 4 discharged from the dryer 3 is returned to the kneading and granulating machine 1, but the present invention is not limited to this. For example, sludge 2
Adjust the heating value to no avail.
この汚泥２にこれを焼却した焼却灰を添加し発熱量ｔ
１１００ Ｋｔｘｔ、７ｋｇ−Ｄ ８とすれば、この汚
泥２を乾燥した後の発熱量は１０００ Ｋａｔ１／ｋｇ
−Ｄ Ｂで、このときは乾燥汚泥４を混練造粒機１に
もどさなくてよい。The incineration ash obtained by incinerating this sludge is added to this sludge 2, and the calorific value is t.
1100 Ktxt, 7kg-D 8, the calorific value after drying this sludge 2 is 1000 Kat1/kg
-DB In this case, it is not necessary to return the dried sludge 4 to the kneading and granulating machine 1.
以上説明したように本発明によれば、造粒および乾燥さ
せた汚泥を焼却炉の上部燃焼室に供給して部分燃焼させ
た後に、前記上部燃焼室と流動床用口ざらを介して連設
された下部燃焼室に降下させ焼成させるようにしている
から、焼成排ガスを上部燃焼室に流入させ部分燃焼用と
して用いることができる。As explained above, according to the present invention, after the granulated and dried sludge is supplied to the upper combustion chamber of the incinerator and partially combusted, the sludge is connected to the upper combustion chamber through the fluidized bed opening. Since the combustion exhaust gas is lowered into the lower combustion chamber where the combustion is performed, the combustion exhaust gas can be flowed into the upper combustion chamber and used for partial combustion.
したがって、従来のように焼成排ガスを外部に排出させ
ることなく有効に利用することができるから、熱効率の
向上がはかれるという効果がある。Therefore, the firing exhaust gas can be effectively utilized without being discharged to the outside as in the conventional case, which has the effect of improving thermal efficiency.
第１図は本発明に係る汚泥の焼成方法を示す系統図、第
２図は焼成炉を示す概略図である。
１・・・・混練造粒機、３・・・・乾燥機、５・・・・
焼成炉、６・・・・上部燃焼室、Ｔ・・・・下部燃焼室
、８・・・・流動床用口ざら、 ′１０・・・・下降管
。
特許出願人 三井造船株式会社FIG. 1 is a system diagram showing a sludge firing method according to the present invention, and FIG. 2 is a schematic diagram showing a firing furnace. 1... Kneading and granulating machine, 3... Dryer, 5...
Calcining furnace, 6... Upper combustion chamber, T... Lower combustion chamber, 8... Fluidized bed opening, '10... Downcomer pipe. Patent applicant Mitsui Engineering & Shipbuilding Co., Ltd.
Claims (1)
上下に連設された二つの燃焼室を備えた焼成炉の上部燃
焼室に供給し、この汚泥を部分燃焼させた後、前記二つ
の燃焼室を連通ずる下降管を降下させ下部燃焼室に供給
し焼成させることを特徴とする汚泥の焼成方法。The granulated and dried sludge is supplied to the upper combustion chamber of a kiln equipped with two combustion chambers connected above and below through a fluidized bed opening, and after partially combusting the sludge, the A method for burning sludge characterized by lowering a downcomer pipe that communicates two combustion chambers and supplying the sludge to a lower combustion chamber for burning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9461383A JPS59219619A (en) | 1983-05-28 | 1983-05-28 | Burning method for sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9461383A JPS59219619A (en) | 1983-05-28 | 1983-05-28 | Burning method for sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59219619A true JPS59219619A (en) | 1984-12-11 |
Family
ID=14115095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9461383A Pending JPS59219619A (en) | 1983-05-28 | 1983-05-28 | Burning method for sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59219619A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072493A (en) * | 2011-02-24 | 2011-05-25 | 河南省四达仙龙实业有限公司 | Methane slurry mixture combustion furnace |
-
1983
- 1983-05-28 JP JP9461383A patent/JPS59219619A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072493A (en) * | 2011-02-24 | 2011-05-25 | 河南省四达仙龙实业有限公司 | Methane slurry mixture combustion furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4311103A (en) | Incineration system for sewage sludge | |
| US6216610B1 (en) | Process and device for incineration of particulate solids | |
| JPS5911545B2 (en) | Portland cement production and waste utilization | |
| CN105541076A (en) | Vertical type drying and incineration equipment for municipal sludge | |
| US4198201A (en) | Method of and apparatus for operating industrial furnace systems | |
| CN206055638U (en) | For the cracking incinerator of waste process of endangering | |
| US4089697A (en) | Manufacture of Portland cement | |
| JPS59219619A (en) | Burning method for sludge | |
| JPS6370014A (en) | Combustion-melting furnace of cyclone type for sewage sludge | |
| CN206207437U (en) | For the vertical incinerator of dangerous waste thing treatment | |
| JPS6053805B2 (en) | Combustible sludge treatment method | |
| CN218544457U (en) | Device for treating biomass fuel in cylindrical layer shape | |
| GB1030231A (en) | System for and method of destroying aqueous slurries containing combustible organic waste materials | |
| JP2005221195A (en) | Method for treating organic waste and device therefor | |
| JPH10169944A (en) | Fluidized layer control method in waste thermal decomposition furnace | |
| CN218544459U (en) | Be used for cement kiln to deal with spiral staircase stove in coordination | |
| JP3789872B2 (en) | Operation method of waste incinerator using dry sludge | |
| CN115560340A (en) | Device and method for treating biomass fuel in cylindrical layer manner | |
| JPH0229402Y2 (en) | ||
| JPH0232225B2 (en) | ||
| JPS6370015A (en) | Combustion-melting furnace of cyclone type for sewer sewage | |
| JPH01184314A (en) | Refuse melting furnace | |
| JPH0130050B2 (en) | ||
| JP2602612B2 (en) | Fluidized bed incineration of waste powder | |
| JP3821432B2 (en) | Sewage sludge incineration equipment |