JPS6370015A - Combustion-melting furnace of cyclone type for sewer sewage - Google Patents
Combustion-melting furnace of cyclone type for sewer sewageInfo
- Publication number
- JPS6370015A JPS6370015A JP21207286A JP21207286A JPS6370015A JP S6370015 A JPS6370015 A JP S6370015A JP 21207286 A JP21207286 A JP 21207286A JP 21207286 A JP21207286 A JP 21207286A JP S6370015 A JPS6370015 A JP S6370015A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- sewage sludge
- slag
- flue
- combustion
- 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
- 238000002844 melting Methods 0.000 title claims description 19
- 239000010865 sewage Substances 0.000 title description 3
- 239000002893 slag Substances 0.000 claims abstract description 58
- 239000010801 sewage sludge Substances 0.000 claims abstract description 40
- 239000000567 combustion gas Substances 0.000 claims abstract description 19
- 238000002485 combustion reaction Methods 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 13
- 235000021463 dry cake Nutrition 0.000 claims abstract description 3
- 230000008018 melting Effects 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000008187 granular material Substances 0.000 abstract description 5
- 235000002918 Fraxinus excelsior Nutrition 0.000 abstract 1
- 239000002956 ash Substances 0.000 abstract 1
- 235000012970 cakes Nutrition 0.000 description 14
- 239000002245 particle Substances 0.000 description 11
- 239000010802 sludge Substances 0.000 description 7
- 239000000428 dust Substances 0.000 description 5
- 239000004071 soot Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007908 dry granulation Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Landscapes
- Gasification And Melting Of Waste (AREA)
- Incineration Of Waste (AREA)
- Cyclones (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、下水処理場から発生する汚泥を造粒乾燥した
状態で処理する一すイクロン形焼却溶融炉に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a one-micron type incinerator and melting furnace for treating sludge generated from a sewage treatment plant in a granulated and dry state.
［従来の技術］
下水汚泥は、乾燥固化物’ＩｋＣＩ当り、２．０００〜
３．５００ｋｃａｌの熱♀を右する。従って、例えば火
力発電所のボイラー等に使用されているサイクロン形焼
ム１炉と同じリイク［１ン形焼却溶融炉で、比較的高い
燃焼負荷で焼却すれば、そのうちの可燃性有機質成分は
燃焼ガスとして排出され、不燃性の無）幾質成分は、同
化後骨材として再生利用できる溶融スラグの状態で取出
しうろことが知られている。[Prior art] Sewage sludge has a dry solidified product'IkCI of 2.000~
3. 500 kcal heat ♀ right. Therefore, if incineration is performed at a relatively high combustion load in a cyclone-type incineration and melting furnace similar to the cyclone-type incinerator used in boilers of thermal power plants, the combustible organic components will be combusted. It is known that the non-combustible non-combustible structural components discharged as gas can be extracted in the form of molten slag which can be recycled as aggregate after assimilation.
１ノイクロン形焼却溶融炉は、例えＩＪ、第２図の断面
図、および第３図の平面図で開示するように、耐熱性材
料よりなる円筒状の炉体く燃焼室）１の炉頂に、オイル
、可燃ガス等の燃料を供給し、炉内で着火させる予熱バ
ーナー２、炉体１の外壁円周に対して接線方向に取付け
られ、乾燥汚泥ケーキ粒状物を圧縮空気にのせて供給す
る吹込口３、発生する燃焼ガスの排出のための煙道４、
炉底に燃焼中汚泥ケーキ中の無機質成分が溶融スラグと
して落下するのを排出するスラグ取出口５を設けた構造
よりなる。そして、予熱バーナー２に着火して炉内を加
熱し、吹込口３から、圧縮空気にのせて汚泥ケーキ粒状
物を供給すると、該粒状物は点線で示すような方向に、
炉体１の内壁に副って旋回しながら燃焼し、ｆ：ｉ機首
成分は燃焼ガスとなって煙道４から排出される。一方、
無機質成分は１３６０〜１４５０℃の炉内高温にさらさ
れて、溶融スラグとなり、炉室をったって流下しスラグ
取出口５から取出され、水６を満した冷却槽７で同化、
冷却されるというもので弱る。1. A Neukron type incinerator and melting furnace has a cylindrical furnace body made of a heat-resistant material and a combustion chamber (1) at the top of the furnace, as shown in the cross-sectional view of FIG. 2 and the plan view of FIG. 3. , a preheating burner 2 that supplies fuel such as oil or combustible gas and ignites it in the furnace, is attached tangentially to the outer wall circumference of the furnace body 1, and supplies dry sludge cake granules on compressed air. an inlet 3, a flue 4 for discharging generated combustion gases;
It has a structure in which a slag outlet 5 is provided at the bottom of the furnace to discharge inorganic components in the sludge cake during combustion that fall as molten slag. Then, when the preheating burner 2 is ignited to heat the inside of the furnace and sludge cake particles are supplied from the air inlet 3 on compressed air, the particles move in the direction shown by the dotted line.
It burns while swirling along the inner wall of the furnace body 1, and the f:i nose component becomes combustion gas and is discharged from the flue 4. on the other hand,
The inorganic components are exposed to high temperatures in the furnace of 1360 to 1450°C, become molten slag, flow down the furnace chamber, are taken out from the slag outlet 5, and are assimilated in a cooling tank 7 filled with water 6.
It weakens when it is cooled.
［発明か解決しようとする問題点］
ところが前記のようなサイクロン形焼却溶融炉において
、下水汚泥中の無機質成分が未燃性灰分として未溶融粉
体のまま、有機質成分が燃焼して生成した燃焼ガスの流
れに乗って炉内を旋回し、その間、大部分は炉内壁に沿
って流化する溶融スラブの滴として捕捉されるが、一部
は捕捉されずに、燃焼ガスにのったまま炉外に排出され
、°煙道に堆積してその閉塞、あるいは大気の汚染を引
起すことがある。また、このようにして、冷却槽７に回
収されたスラグは多くの場合、ポーラスな固体でガス成
分等を含み、骨材としての再刊用に不向で、資源の有効
利用の目的に反するものであった。[Problems to be Solved by the Invention] However, in the above-mentioned cyclone-type incinerator and melting furnace, the inorganic components in the sewage sludge remain as unmelted powder as unburned ash, and the organic components are combusted. The molten slab swirls inside the furnace along with the gas flow, and during this time most of the molten slab is captured as droplets of the molten slab that flow along the inner walls of the furnace, but some remains on the combustion gas without being captured. It may be discharged outside the furnace and deposited in the flue, clogging it or causing air pollution. In addition, in many cases, the slag collected in the cooling tank 7 is a porous solid that contains gas components, etc., and is unsuitable for reprinting as aggregate, which goes against the purpose of effective resource utilization. Met.
［問題点を解決するための手段］
本発明は、上記問題を解消するため従来のサイクロン形
焼却溶融炉に改良を加え、燃焼カスの炉内における流れ
を該ガスを炉底部に股（ブた溶融スラグ溜り部のスラグ
表面と接触させ、同伴する未溶融￥！Ｊ）体を溶融スラ
グ溜り部に捕捉させる構造としてなるものである。すな
わち、本発明は、造粒乾燥した下水汚泥を処理するサイ
クロン形下水汚泥焼Ｎ］溶融炉において、
炉頂に予熱バーナーを備えた円筒状の炉体に、下水汚泥
の造粒した乾燥ケーキを圧縮空気にのせて炉内へ接線方
向から供給する吹込口を、前記予熱バーナーの近傍に設
け、
炉底部に焼却中に生成する下水汚泥中の無機質成分より
なる溶融スラグの溜り部、および該溜り部からオーバー
フローする溶融スラグを排出るスラグ取出し口を設け、
さらに下水汚泥中の有改質成分の燃焼により発生した排
ガスの煙道を、前記溶融スラグの溜り部における溶融ス
ラグ表面と、排ガスの流れとが直接接触する位置に付設
してなることを特徴とするサイクロン形下水汚泥焼却溶
融炉を要旨とするものでおる。[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention improves the conventional cyclone-type incinerator and melting furnace, and improves the flow of combustion residue in the furnace by directing the gas to the bottom of the furnace. The structure is such that the slag is brought into contact with the slag surface of the molten slag reservoir, and the accompanying unmelted ¥!J) bodies are captured in the molten slag reservoir. That is, the present invention provides a cyclone-type sewage sludge melting furnace for treating granulated and dried sewage sludge, in which a granulated dry cake of sewage sludge is placed in a cylindrical furnace body equipped with a preheating burner at the top of the furnace. An inlet for supplying compressed air tangentially into the furnace is provided near the preheating burner, and a pool of molten slag made of inorganic components in sewage sludge generated during incineration is formed at the bottom of the furnace, and the pool is A slag outlet is provided to discharge the molten slag overflowing from the sewage sludge, and a flue for the exhaust gas generated by combustion of the reformed components in the sewage sludge is connected to the molten slag surface in the molten slag pool and the flow of the exhaust gas. The gist is a cyclone-type sewage sludge incinerator and melting furnace, which is characterized in that it is installed in a position where it is in direct contact with the sewage sludge incineration and melting furnace.
以下本発明を図面に基いて説明する。第１図は、本発明
の下水汚泥焼却溶融炉の一例を示す断面図で必る。なお
、説明の都合上溶融炉の高さは実際よりも圧縮して図示
しである。The present invention will be explained below based on the drawings. FIG. 1 is a sectional view showing an example of the sewage sludge incineration and melting furnace of the present invention. Note that for convenience of explanation, the height of the melting furnace is shown compressed from the actual height.
図中１は、円筒状の炉体で、その頂部には、オイル、可
燃ガス等の燃料を供給し、着火して炉内温度を１０．０
０〜１１００’Ｃの高温に加熱する予熱バーナー２が設
けられている。３は炉体１の外壁円周に対し、接線方向
に取付けられた吹込口で、ここから乾燥下水汚泥ケーキ
の粒状物が圧縮空気にのせられて炉内に供給され、供給
された乾燥下水汚泥ケーキの粒状物は点線方向に炉内壁
に副って旋回し燃焼される。８は、炉底に設けられた溶
融スラグ溜り部で、下水汚泥中の不燃性無′ａｆｆｊ成
分が、前記有機質成分の燃焼に伴って、炉内の１３５０
〜１４５０’Ｃの高温にざらされ、溶融し炉内壁を伝っ
て流下して、溶融スラグ９として、ここに集められる。In the figure, 1 is a cylindrical furnace body, and fuel such as oil or combustible gas is supplied to the top of the body and ignited to bring the temperature inside the furnace to 10.0.
A preheating burner 2 for heating to a high temperature of 0 to 1100'C is provided. 3 is an inlet installed tangentially to the circumference of the outer wall of the furnace body 1, from which granules of dried sewage sludge cake are carried by compressed air and supplied into the furnace, and the supplied dried sewage sludge is The granules of the cake swirl along the inner wall of the furnace in the direction of the dotted line and are burned. 8 is a molten slag reservoir provided at the bottom of the furnace, where the non-flammable non-affj components in the sewage sludge are absorbed into the 1350
It is exposed to high temperatures of ~1450'C, melts, flows down the inner wall of the furnace, and is collected here as molten slag 9.
尚、溶融スラグ溜り部８内には、必要に応じて、溶融ス
ラグ９の同化を防止するための保温電極（図示せず）が
設けられる。Note that a heat-retaining electrode (not shown) for preventing assimilation of the molten slag 9 is provided in the molten slag reservoir 8, if necessary.
４は、下水汚泥中の有機質成分の燃焼により発生した燃
焼ガスを排出づるため炉体１に付設された煙道である。Reference numeral 4 denotes a flue attached to the furnace body 1 for discharging combustion gas generated by combustion of organic components in sewage sludge.
そして燃焼ガスは図示のとおり、前記溶融スラグ面り部
８の溶融スラグ９の表面と垂直方向から直接接触する。As shown in the figure, the combustion gas directly contacts the surface of the molten slag 9 of the molten slag surface portion 8 from the vertical direction.
そして同伴する無機質成分よりなる未溶融粒体が溶融ス
ラグ９中に捕捉された必と、燃焼ガスは、水平方向にそ
の流れのむきをかえ、１点鎖線で示す方向へ流れて煙道
４から排出される。すなわち、煙道４は炉体１に直接設
けられるのではなく、炉体１からはなれて燃焼ガスが一
旦、溶融スラグ９表面と接触後、流れを変えうる位置に
配置される。Then, as the accompanying unmelted particles made of inorganic components are captured in the molten slag 9, the combustion gas changes its flow direction horizontally and flows in the direction shown by the dashed-dotted line from the flue 4. be discharged. That is, the flue 4 is not provided directly on the furnace body 1, but is placed in a position away from the furnace body 1 where the combustion gas can change its flow after once contacting the surface of the molten slag 9.
５は、溶融スラグ面り部８からオーバーフ［１−する溶
融スラグ９をυ１出するため炉底に設けられる取出口、
７は、水６を満した冷却槽で、取出口５から排出される
溶融スラブ（実線矢印で示す）９を受は入れ、冷却し、
固化スラグ１０を生成さ１！るためのものである。5 is an outlet provided at the bottom of the furnace for taking out the overflowing molten slag 9 from the molten slag surface 8;
7 is a cooling tank filled with water 6, which receives and cools the molten slab (indicated by a solid arrow) 9 discharged from the outlet 5;
Solidified slag 10 produced 1! It is for the purpose of
本発明のサイクロン形下水汚泥焼ムＤ炉により、乾燥造
粒した下水汚泥ケーキを処理する場合、好ましくは含水
率が５％以下で、その粒径が１〜３ｍｍの範囲に調製し
たものを、圧縮空気にのけて吹込口３から、例えば１０
０Ｘ１０”ｋｃａｌ／ｍ３ｈｒ以上の燃ル２室負荷で供
、恰すれぽ、燃焼ガスに同伴して、大気を汚泥しおるい
は煙道４を閉塞したりする煤塵量が極めて少なくなる。When treating a dried and granulated sewage sludge cake using the cyclone type sewage sludge baking furnace D of the present invention, preferably the water content is 5% or less and the particle size is in the range of 1 to 3 mm. For example, 10
When a two-chamber fuel load of 0x10"kcal/m3hr or more is provided, the amount of soot and dust that accompanies the combustion gas and sludge the atmosphere or block the flue 4 is extremely reduced.
なお下水汚泥ケ一二１：を”、’ｚ燥）６粒して、粒径
か１〜３ｍｍの範囲のものとするには、例えば、第４図
のフロー図で示されるように、下水処理場に堆積する汚
泥を例えばベル１〜プレス、フィルタプレス、遠心脱水
）幾等の脱水装置で脱水し、これに必要に応じてバイン
グー等を加え、公知型式の造粒機１１にＪ：り造粒後、
乾燥機１２にて乾燥しあるいは、乾燥工程で造粒しなが
ら乾燥し篩別前１３にかける。In addition, in order to make sewage sludge into 6 grains with a particle size in the range of 1 to 3 mm, for example, as shown in the flow diagram of Figure 4, sewage sludge The sludge deposited in the treatment plant is dehydrated using a number of dewatering devices, such as a bell press, a filter press, or a centrifugal dewatering device, and if necessary, baingu or the like is added thereto, and the sludge is put into a known type of granulator 11. After granulation,
It is dried in a dryer 12 or dried while being granulated in the drying process, and then passed through a sieve 13.
この場合、乾燥ケーキ中の水分の蒸発による熱損失に配
慮してケーキ含水率か５％以下べまで乾燥されることが
望ましい。篩別機１３により分級された粒径が１〜３
ｒｎ ｒｎのちのが炉内に供給されるので必るか、粒径
か３ ｒＴｌ ｒＴｌを超えるもの（は破砕別１４によ
り細粒され全量篩別機１３に循環される。In this case, in consideration of heat loss due to evaporation of water in the dried cake, it is desirable to dry the cake to a moisture content of 5% or less. The particle size classified by the sieving machine 13 is 1 to 3.
Since the particles after rn are fed into the furnace, those with a particle size exceeding 3 rTl are necessarily finely divided by the crusher 14 and circulated to the sieve 13 in their entirety.
一方、’ｌ ｍ ｒｎアンダーのものは造粒前の脱水ケ
ーキに循環ン昆合されろ。下水汚泥の乾燥ケーキを１〜
３ｍｍの範囲の粒径に調製したものは、この範囲外のも
のにくらべ、煙道から大気に排出される燃焼ガス中に同
伴する煤塵量が著しく低く、煤塵による煙道の閉塞、付
着は殆んど認められず、燃焼溶融効率もよい。On the other hand, those under 'l m rn are circulated and combined with the dehydrated cake before granulation. 1~ dried sewage sludge cake
Compared to particles outside this range, those prepared to have a particle size in the 3 mm range have a significantly lower amount of soot and dust entrained in the combustion gas discharged from the flue to the atmosphere, and the soot and dust hardly clog or adhere to the flue. It is rarely recognized and has good combustion and melting efficiency.
［作用］
造粒した下水汚泥乾燥ケーキを、圧縮空気にのせて、吹
込口３から炉内に供給すると、炉内を内壁に副って旋回
降下し、その間、右機貿成分は燃焼して、発生した燃焼
ガスは、その流れか炉底に設けられる溶融スラグ面り部
８のスラグ表面と直接接触し、そのあと水平方向にむき
を変えて、煙道４から排出される。−力無）原質成分は
、大部分が炉内を旋回降下中、溶融スラグとなり、炉内
壁を滴として流下し、溶融スラグ面り部８に溜るが、一
部の未溶融灰分は前記燃焼ガスに同伴して、燃焼ガスが
スラグ９表面と接触したとき、スラグ９中に捕捉される
。[Function] When the granulated dry sewage sludge cake is loaded with compressed air and fed into the furnace from the inlet 3, it swirls and descends inside the furnace along the inner wall, during which time the granulated sewage sludge components are burned. The generated combustion gas comes into direct contact with the slag surface of the molten slag face part 8 provided at the bottom of the furnace, and then changes direction in the horizontal direction and is discharged from the flue 4. - Most of the raw material components turn into molten slag while swirling and descending in the furnace, flow down the furnace inner wall as drops, and accumulate on the molten slag surface 8, but some unmelted ash remains during the combustion process. When the combustion gas is entrained in the gas and comes into contact with the surface of the slag 9, it is trapped in the slag 9.
［発明の効果］
本発明のリーイクロン形下水汚泥ｒＡ ７ＪＪ溶ｕ（ｉ
炉は以上のべたように、炉底に溶融スラグの溜り部を設
け、あわせて、下水汚泥中の何）原質成分の燃焼による
燃“填カスの流れか前記スラグ溜り部のスラグ面と直接
接触するように煙道を付設してなるので、燃焼ガス流に
同伴する無は￥１成分よりなる未溶融粒体が、スラグ中
に捕捉され煙道へ排出されることがなく、従って、煙道
の閉塞や大気へ飛散して環境を汚染するといった恐れか
ない。しがも無機１１成分が骨材などに再刊用可能な固
化スラグとして回収できるものであり、資源の再生利用
という而からも本発明の産業上の利用価値は大きい。[Effect of the invention] The Leekron type sewage sludge rA 7JJ melt u(i
As described above, the furnace is provided with a molten slag reservoir at the bottom of the furnace, and the flow of combustible slag due to the combustion of raw material components in the sewage sludge is directly connected to the slag surface of the slag reservoir. Since the flue is attached so that the flue is in contact with the flue, unmelted particles consisting of 1 component, which accompany the combustion gas flow, are captured in the slag and are not discharged into the flue. There is no fear that it will block roads or pollute the environment by scattering into the atmosphere.However, the 11 inorganic components can be recovered as solidified slag that can be republished as aggregate, and from the perspective of resource recycling, this book is a good choice. The invention has great industrial utility value.
［実施例］
３２００ｋＣａｌ／ｋｇの熱量を有する下水汚染の脱水
ケーキを第４図で示す工程フローに従って処理し、含水
率５Ｃ３もの１〜３ｍｒｎの範囲の乾燥造粒砥石を冑だ
。これを、第１図で示す本発明の１ノイクロン形下水汚
泥焼却溶融炉（炉の内径５００ｍｒｒ）、炉の高さ１４
００ｍｍ＞ 、ｃｌＥよび比較例として第２図で示す従
来のサイクロン形下水汚泥焼２（ｇ溶融炉を用い（：い
の内径４７０ｍｍ、炉の高８１５００ｍｍ＞、それぞれ
の予熱バーナを点火して炉内温度を１０００〜１１００
℃に昇温し、１３００〜１４００’Ｃの範囲で焼却溶融
処理し、燃焼排ガス中に同伴する煤塵量および、回収ス
ラグ■を測定した。結果を第１表に示す。なお、下水汚
泥ケーキ造粒乾燥品の供給量は６０ ｋ ｑ／ ｈｒ、
燃焼量は、１９．２Ｘ１０４ｋｃａ ｌ／ｈｒ。[Example] A sewage-contaminated dehydrated cake having a calorific value of 3200 kCal/kg was treated according to the process flow shown in FIG. 4, and a dry granulation grindstone with a moisture content of 5C3 and a range of 1 to 3 mrn was ground. This is shown in FIG.
00mm>, CLE and the conventional cyclone type sewage sludge incineration 2 (g melting furnace shown in Fig. 2 as a comparative example). Temperature 1000-1100
The temperature was increased to 1300 to 1400'C, and the mixture was incinerated and melted, and the amount of soot and dust entrained in the combustion exhaust gas and the recovered slag (2) were measured. The results are shown in Table 1. In addition, the supply amount of granulated dried sewage sludge cake is 60 kq/hr,
The combustion amount is 19.2X104kcal/hr.
４１２゛ 第１表
以上の結果から明らかなように、本発明のサイクロン形
下水汚泥焼却溶融炉の方が従来のものにくらべて燃焼ガ
ス中に同伴する煤塵量が少く煙道の閉塞、大気の汚染の
恐れが少く、また、スラグ回収量も大きいことが明らか
である。412゛ As is clear from the results in Table 1 and above, the cyclone type sewage sludge incinerator and melting furnace of the present invention has a smaller amount of soot and dust entrained in the combustion gas than the conventional one, and is less likely to block the flue and reduce atmospheric pressure. It is clear that there is less risk of contamination and that the amount of slag recovered is large.
第１図は本発明のサイクロン形下水汚泥焼却溶融炉の一
例を示す断面開示図、第２図は従来のナイフロン彫工水
汚染焼却溶融炉の断面開示図、第３図は同じく平面開示
図、第４図は下水汚染ケーキの焼却前処理フロー図であ
る。
１・・・炉１体
２・・・予熱バーナー
３・・・吹込口
４・・・煙道
５・・・スラグ取出口
１６・・・水
７・・・冷却槽
８・・・溶融スラグ溜り部
９・・・溶融スラブ
１０・・・固化スラグ
１１・・・造粒機
１２・・・乾燥機
１３・・・篩別機
１４・・・破砕機FIG. 1 is a cross-sectional view showing an example of the cyclone-type sewage sludge incineration and melting furnace of the present invention, FIG. Figure 4 is a flow diagram of pre-incineration treatment of sewage contaminated cake. 1... Furnace 1 body 2... Preheating burner 3... Inlet 4... Flue 5... Slag outlet 16... Water 7... Cooling tank 8... Molten slag pool Part 9... Molten slab 10... Solidified slag 11... Granulator 12... Dryer 13... Sieving machine 14... Crushing machine
Claims (1)
汚泥焼却溶融炉において、 炉頂に予熱バーナーを備えた円筒状の炉体に、下水汚泥
の造粒した乾燥ケーキを圧縮空気にのせて炉内へ接線方
向から供給する吹込口を、前記予熱バーナーの近傍に設
け、 炉底部に焼却中に生成する下水汚泥中の無機質成分より
なる溶融スラグの溜り部、および該溜り部からオーバー
フローする溶融スラグを排出するスラグ取出し口を設け
、 さらに下水汚泥中の有機質成分の燃焼により発生した排
ガスの煙道を、前記溶融スラグの溜り部における溶融ス
ラグ表面と、排ガスの流れとが直接接触する位置に付設
してなることを特徴とするサイクロン形下水汚泥焼却溶
融炉。 ２ 造粒乾燥した下水汚泥の含水率が５％以下である特
許請求の範囲第１項記載のサイクロン形下水汚泥焼却溶
融炉。 ３ 下水汚泥のうち有機質成分は燃焼ガスとして排出さ
せ、無機質成分は溶融スラグとして取出す特許請求の範
囲第１項記載のサイクロン形下水汚泥焼却溶融炉。[Claims] 1. In a cyclone-type sewage sludge incineration and melting furnace for treating granulated and dried sewage sludge, a cylindrical furnace body equipped with a preheating burner at the top of the furnace is used to compress a granulated dry cake of sewage sludge. An inlet for supplying air tangentially into the furnace is provided near the preheating burner, and a pool of molten slag made of inorganic components in sewage sludge generated during incineration is formed at the bottom of the furnace, and the pool is located at the bottom of the furnace. A slag outlet is provided to discharge the molten slag overflowing from the sewage sludge, and the flue of the exhaust gas generated by combustion of the organic components in the sewage sludge is connected directly to the molten slag surface in the molten slag pool and the flow of the exhaust gas. A cyclone type sewage sludge incineration and melting furnace characterized by being attached to a contact position. 2. The cyclone-type sewage sludge incinerator and melting furnace according to claim 1, wherein the water content of the granulated and dried sewage sludge is 5% or less. 3. The cyclone type sewage sludge incineration and melting furnace according to claim 1, wherein the organic components of the sewage sludge are discharged as combustion gas, and the inorganic components are taken out as molten slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21207286A JPS6370015A (en) | 1986-09-09 | 1986-09-09 | Combustion-melting furnace of cyclone type for sewer sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21207286A JPS6370015A (en) | 1986-09-09 | 1986-09-09 | Combustion-melting furnace of cyclone type for sewer sewage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6370015A true JPS6370015A (en) | 1988-03-30 |
Family
ID=16616397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21207286A Pending JPS6370015A (en) | 1986-09-09 | 1986-09-09 | Combustion-melting furnace of cyclone type for sewer sewage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6370015A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0233513A (en) * | 1988-07-22 | 1990-02-02 | Jgc Corp | Burner |
| US5020455A (en) * | 1990-01-11 | 1991-06-04 | Chiba City & Tsukishima Kikai Kubushiki Kaisha | System for treating waste material in a molten state |
| EP0743286A3 (en) * | 1995-05-18 | 1997-03-26 | Daido Steel Co Ltd | Method of melting treatment of incineration fly ash |
-
1986
- 1986-09-09 JP JP21207286A patent/JPS6370015A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0233513A (en) * | 1988-07-22 | 1990-02-02 | Jgc Corp | Burner |
| US5020455A (en) * | 1990-01-11 | 1991-06-04 | Chiba City & Tsukishima Kikai Kubushiki Kaisha | System for treating waste material in a molten state |
| US5081937A (en) * | 1990-01-11 | 1992-01-21 | Chiba City & Tsukishima Kikai Kabushiki Kaisha | System for treating waste material in a molten state |
| EP0743286A3 (en) * | 1995-05-18 | 1997-03-26 | Daido Steel Co Ltd | Method of melting treatment of incineration fly ash |
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