JPS59170198A - Method and apparatus for producing sludge fuel - Google Patents
Method and apparatus for producing sludge fuelInfo
- Publication number
- JPS59170198A JPS59170198A JP4658283A JP4658283A JPS59170198A JP S59170198 A JPS59170198 A JP S59170198A JP 4658283 A JP4658283 A JP 4658283A JP 4658283 A JP4658283 A JP 4658283A JP S59170198 A JPS59170198 A JP S59170198A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- pulverized coal
- flocculant
- fuel
- fuel production
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、下水、し尿、その他の汚水処理装置から排出
される汚泥から燃料を製造する方法及び装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a method and apparatus for producing fuel from sewage, human waste, and other sludge discharged from sewage treatment equipment.
ｃ来技術〕
かかる汚水処理装置カドら排出される汚泥を有効利用す
る方法は、従来より揮々提案されているところであるが
、奮効な燃料として利用しようとい５試みはなされてい
ない。例えば、特公昭３９−７０４４号公報及び特公昭
４８−２２９５１号公報には、汚泥に微粉炭を添加して
含水率を下げることによって、汚泥な９燃化する方法が
開示されている。また、特公昭５７．−１５．６００号
公報には上述の微粉炭に代えてコークスを用いる方法が
開示されている。しかし、上述いずれの方法も汚泥を有
効利用するというものではなく、単に汚泥を焼却処分す
るにあたって、いかにして汚泥を容易に燃焼させるかと
いう方法にとどまるものであった。(C) Prior Art] Methods for effectively utilizing the sludge discharged from such sewage treatment equipment have been proposed in the past, but no attempt has been made to utilize it as an effective fuel. For example, Japanese Patent Publication No. 39-7044 and Japanese Patent Publication No. 48-22951 disclose a method of incinerating sludge by adding pulverized coal to the sludge to lower the water content. In addition, special public service 1983. Japanese Patent No. 15.600 discloses a method using coke instead of the above-mentioned pulverized coal. However, none of the above-mentioned methods effectively utilizes sludge, but merely focuses on how to easily burn sludge when incinerating sludge.
即ち、汚泥を燃料として有効利用するためには多量に発
生する汚泥を連続的に処理でき、且つ安定した均一な性
状の汚泥燃料を製造供給することができる方法及び装置
が要望されるのである。また、それによって製造された
汚泥燃料に対し、燃料としての取扱いの容易性や、安定
した燃焼特性等といった条件をも具備することが要望さ
れるのである。That is, in order to effectively utilize sludge as fuel, there is a need for a method and apparatus that can continuously process a large amount of sludge and can produce and supply sludge fuel with stable and uniform properties. In addition, the sludge fuel produced thereby is required to satisfy conditions such as ease of handling as a fuel and stable combustion characteristics.
従来このような条件等を満足する汚泥燃料の製造フロセ
スは確立されるに至っていない。例エバ、前記公報等に
記載されたものによれば、汚泥と微粉炭の混合工程は混
合タンクを用いていたものとなっているが、汚泥と微粉
炭との比重が異なるために攪拌混合を行なわなければな
らず、連続処理には好ましくない方法である。また、こ
の混合が均一になされないと、燃料としての性状にばら
つきが生ずるという欠点につながるのである。さらに、
燃料として一定の形状に成形するような場合に、成形後
の燃料同志が（つつき合って大きな塊になってしまうと
、自然乾燥等の乾燥工程の障害となったり、燃料として
の取扱いや燃焼特性等に弊害となることが考えられる。Until now, a process for producing sludge fuel that satisfies these conditions has not been established. For example, according to Eva and what is described in the above-mentioned publications, the mixing process of sludge and pulverized coal uses a mixing tank, but because the specific gravity of sludge and pulverized coal is different, stirring and mixing is required. This method is not suitable for continuous processing. Moreover, if this mixing is not uniform, it will lead to the disadvantage that the properties of the fuel will vary. moreover,
When molding into a certain shape as a fuel, if the fuel after molding sticks together and becomes a large lump, it may interfere with the drying process such as natural drying, or it may affect the handling and combustion characteristics of the fuel. It is conceivable that this could be harmful.
本発明の目的は、連続的に排出される汚泥を処理して、
安定した均一な性状の汚泥燃料を得ることかできる汚泥
燃料製造方法及び装置を提供することにある。The purpose of the present invention is to treat continuously discharged sludge,
It is an object of the present invention to provide a sludge fuel manufacturing method and apparatus that can obtain sludge fuel with stable and uniform properties.
Ｃ発明の概要）
本発明は、汚水処理装置から連続して排出される汚泥に
、スラリー状微粉炭と汚泥凝集剤とを注入混合した後脱
水し、脱水された微粉炭混合汚泥を所定形状に加熱しな
がら成形することによって、安定した均一な性状の汚泥
燃料を形成しようとす′るものである。C) Summary of the Invention) The present invention involves injecting and mixing slurry-like pulverized coal and a sludge flocculant into sludge that is continuously discharged from a sewage treatment equipment, dewatering the sludge, and shaping the dehydrated pulverized coal-mixed sludge into a predetermined shape. The aim is to form sludge fuel with stable and uniform properties by molding it while heating.
実施例 以下、本発明を実施例に基づいて説明する。Example Hereinafter, the present invention will be explained based on examples.
第１図に本発明の適用された一実施例装置の系統構成図
が示されている。図示されたように、儂縮汚泥槽ｌの底
部から汚泥供給ポンプ２によって、一定量の汚泥か連続
的に抜き出され、この汚泥は移送配管３を介して脱水装
置４に供給されるようになっている。一方、微粉炭ホッ
パ５内に貯留されている微粉炭は、懸濁槽６において一
定割合の水に溶解されるようになっている。懸濁槽６に
はミキサ７が設けられており、これによって槽内の微粉
炭４！５３ＸＪ濃度を均一に保持するよ５になっている
。Ｍ濁槽６内のスラリー状微粉炭は、微粉炭注入ポンプ
８によって抜き出され、注入配管９を介して前記汚泥移
送配管３に一定割合で圧入されるようになっている。圧
入された微粉炭は移送配管：３内を移送される過程で、
汚泥とライン混合されるようになっており、この混合効
率は移送距離、流速及び微粉炭の懸濁濃度等を適切に選
定することによって十分満足なものとすることができる
。FIG. 1 shows a system configuration diagram of an embodiment of an apparatus to which the present invention is applied. As shown in the figure, a certain amount of sludge is continuously extracted from the bottom of the shrinking sludge tank l by a sludge supply pump 2, and this sludge is supplied to a dewatering device 4 via a transfer pipe 3. It has become. On the other hand, the pulverized coal stored in the pulverized coal hopper 5 is dissolved in a certain proportion of water in the suspension tank 6. The suspension tank 6 is provided with a mixer 7, which maintains a uniform concentration of 4.53XJ of pulverized coal in the tank. The slurry-like pulverized coal in the M turbidity tank 6 is extracted by a pulverized coal injection pump 8 and is forced into the sludge transfer pipe 3 via an injection pipe 9 at a constant rate. In the process of transferring the injected pulverized coal through the transfer pipe 3,
It is line mixed with sludge, and the mixing efficiency can be made sufficiently satisfactory by appropriately selecting the transfer distance, flow rate, suspension concentration of pulverized coal, etc.
なお、配管内に静止形の混合羽根等を設けてなるライン
ミキサーを、前記圧入点の下流側に挿入配置すれば、一
層混合効果な向上させることができる。また、汚泥の移
送配管３には、汚泥凝集剤注入装置１０から注入配管１
１を介して高分子凝集済Ｉノからなる汚泥凝集剤が、一
定割合で添加注入されるようになっている。Note that if a line mixer having a stationary mixing blade or the like provided in the pipe is inserted and arranged downstream of the press-in point, the mixing effect can be further improved. In addition, an injection pipe 1 is connected to the sludge transfer pipe 3 from the sludge flocculant injection device 10.
1, a sludge flocculant made of polymer flocculated I is added and injected at a constant rate.
脱水装置４は周知のものを適用することができ、好まし
くは微粉炭混合汚泥の含水率が５０〜６０％以下となる
ように脱水することができればよい。A well-known dehydrator 4 can be used, and preferably it is sufficient as long as it can dehydrate the pulverized coal mixed sludge so that the water content becomes 50 to 60% or less.
脱水された微粉炭混合汚泥は成形装置１２に送られ、成
形装置Ｉ２によって所望の形状（例えばベレット状）に
成形され、全体としての含水率か約５０％以下（ただし
、底層部分は４０％以下）の汚泥燃料として排出される
ようになっている。この成形装置１２の具体的なものと
して、望ましくは押出し式成形機を適用するのがよい。The dehydrated pulverized coal mixed sludge is sent to the molding device 12, where it is molded into a desired shape (for example, a pellet shape), and the moisture content as a whole is approximately 50% or less (however, the bottom layer portion is 40% or less). ) is discharged as sludge fuel. As a specific example of the molding device 12, an extrusion molding machine is preferably used.
この押出し式のものによれば、スリット又は細孔から微
粉炭混合汚泥を押出すことによって、板状又は４１ｄ径
の棒状の汚泥燃料が得られ、連続的に略一定形状のもの
を得ることができる。しかも、成形汚泥燃料の体積に対
する表面積を太き（することができるとともに、低含水
率の底層部分は内層部分の水分を吸い上げて空気中に放
散する作用が旺盛であることから、自然乾燥が促進され
る。これによって、成形直後の汚泥燃料同志のくっつき
合いを防ぐことができる。ので、そのまま通気性のよい
袋等に詰めて保管することができる。また、押出し式の
ものによれば、押出し前の混線過程において、汚泥と押
出し機との摩擦によって発熱が生じ、この熱によって成
形された汚泥燃料表面の乾燥が一′層促進されるという
ことになる。なお、押出し式以外、例えば型成形式によ
る場合には、比較的大きい形状の成形汚泥燃料となるこ
とから、その表面の乾燥を促進させるために、別途加熱
装置等を設げることが好ましい。According to this extrusion type, by extruding the pulverized coal mixed sludge through slits or pores, a plate-shaped or rod-shaped sludge fuel with a diameter of 41d can be obtained, and it is possible to continuously obtain a sludge fuel of a substantially constant shape. can. In addition, the surface area relative to the volume of the shaped sludge fuel can be increased, and the bottom layer with a low moisture content has a strong effect of absorbing moisture from the inner layer and dissipating it into the air, promoting natural drying. This prevents the sludge fuel from sticking to each other immediately after forming.Therefore, it can be stored in a well-ventilated bag as is. In the previous mixing process, heat is generated due to friction between the sludge and the extruder, and this heat further accelerates the drying of the formed sludge fuel surface. In the case of this type, since the shaped sludge fuel is relatively large in shape, it is preferable to provide a separate heating device or the like in order to accelerate drying of the surface.
上述したように、本実施例によれば、攪拌式混合タンク
等の格別な装置を用いることな（、移送配管内において
汚泥と微粉炭とを均一に混合させることができ、装置を
簡単化することができる。As described above, according to this embodiment, sludge and pulverized coal can be mixed uniformly in the transfer pipe without using special equipment such as an agitating mixing tank, which simplifies the equipment. be able to.
また、本実施例によれば、汚泥に微粉炭を混入したこと
によって脱水効率が向上され、しかも発熱量等の燃焼特
性の安定した汚泥燃料？：得ることができる。Moreover, according to this embodiment, the dewatering efficiency is improved by mixing pulverized coal into the sludge, and the sludge fuel has stable combustion characteristics such as calorific value. :Obtainable.
さらに、本実施例によれば、成形された汚泥燃料の表面
を所定の含水率以下にすることかできることから、汚泥
燃料同志のくっつき合いを防止することかでき、しかも
自然乾燥能力が増強され、これによって取扱いが容易に
なるとともに、燃焼特性の点においても安定した燃焼状
態が得られるという効果がある。Furthermore, according to this embodiment, since the surface of the formed sludge fuel can be made to have a moisture content below a predetermined level, it is possible to prevent the sludge fuel from sticking together, and the natural drying ability is enhanced. This has the effect of not only making it easier to handle, but also providing a stable combustion state in terms of combustion characteristics.
（発明の効果）
以上説明したように、本発明によれば、連続的に排／Ｊ
Ｊされる汚泥を処理することができ、且つ取扱性に優れ
安定した均一な性状の汚泥燃料を得ることができるとい
う効果がある。(Effects of the Invention) As explained above, according to the present invention, continuous discharge/J
This method has the advantage that it is possible to process sludge that has been subjected to JJ, and that it is possible to obtain sludge fuel that is excellent in handling and has stable and uniform properties.
第１図は不発゛明の適用された一実施例装置の系統構成
図である。
１・・・濃縮汚泥槽、２・・・汚泥供給ポンプ、３・・
・移送配管、４・・・脱水装置、５・・・微粉炭ホッパ
、６・・・ｊ＠濁槽、８・・・微粉炭注入ポンプ、９・
・・注入配管、１０・・・汚泥凝集剤注入装置、１１・
・・注入配管、１２・・・成形装置。
代理人 弁理士 鵜 沼 辰 之
（ほか１名）FIG. 1 is a system configuration diagram of an embodiment of the device to which the undiscovered device was applied. 1...Thickened sludge tank, 2...Sludge supply pump, 3...
・Transfer piping, 4... Dewatering device, 5... Pulverized coal hopper, 6... j @ turbidity tank, 8... Pulverized coal injection pump, 9...
... Injection piping, 10... Sludge flocculant injection device, 11.
... Injection piping, 12... Molding device. Agent Patent attorney Tatsuyuki Unuma (and 1 other person)
Claims (1)
微粉炭を混合１−る第１工程と、該微粉炭混合汚泥に汚
泥凝集剤を添加する第２工程と、凝集剤の添加された微
粉炭混合汚泥を脱水処理する第３工程と、脱水された微
粉炭混合汚泥を所定形状に成形する第４工程とからなる
汚泥燃料製造方法。 （２、特許請求の範囲第１項記載の発明において、前記
第３工程から排出される微粉炭混合汚泥の含水率を６０
％以下にすることを特徴とする汚泥燃料製造方法。 （３〕 特許請求の範囲第１項又は第２項記載の発明
において、前記第４工程は成形汚泥の衣面を実質的に加
熱しながら成形する工程を含んでなることを特徴とする
汚泥燃料製造方法。 （４） 汚水処理装置から連続して供給される汚泥と
微粉炭注入装置から供給されるスラリー状の微粉炭とを
同一配管に圧入して移送することにより混合する移送配
管と、該移送配管内の微粉炭混合汚泥性汚泥凝集剤を象
加する汚泥凝集剤注入装置と、凝集剤の添加された微粉
炭混合汚泥を脱水処理する脱水装置と、脱水された微粉
炭混合汚泥を所定形状に成形する成形装置とを備えて構
成される汚泥燃料製造装置。 （５）特許請求の範囲第４項記載の発明において、前記
移送配管には静止形ラインミキサが設げられていること
を特徴とする汚泥燃料製造装置。 （６）特許請求の範囲第４項又は第５項記載１の発明に
おいて、前記成形装置は微粉炭混合汚泥をベンット状又
は薄板状に成形する押出し成形機から成るものであるこ
とを特徴とする汚泥燃料製造装置。 （７）特許請求の範囲第４項乃至第６項記載の発明にお
いて、前記成形装置は成形汚泥を加熱する加熱装置を含
んで成ることを特徴とする汚泥燃料製造装置。[Claims] (1) A first step of mixing slurry-like pulverized coal into sludge discharged from a sewage treatment device, and a second step of adding a sludge flocculant to the pulverized coal-mixed sludge; A sludge fuel production method comprising a third step of dehydrating pulverized coal mixed sludge to which a flocculant has been added, and a fourth step of shaping the dehydrated pulverized coal mixed sludge into a predetermined shape. (2. In the invention set forth in claim 1, the water content of the pulverized coal mixed sludge discharged from the third step is set to 60
% or less. (3) The sludge fuel according to claim 1 or 2, wherein the fourth step includes a step of forming the formed sludge while substantially heating the coated surface of the formed sludge. Manufacturing method. (4) A transfer pipe that mixes sludge continuously supplied from a sewage treatment equipment and slurry-like pulverized coal supplied from a pulverized coal injection device by pressurizing and transporting the same into the same pipe, and A sludge flocculant injection device that injects a pulverized coal mixed sludge flocculant into the transfer pipe, a dewatering device that dehydrates the pulverized coal mixed sludge to which the flocculant has been added, and a sludge flocculant injection device that injects the pulverized coal mixed sludge into a designated area. A sludge fuel production device comprising a forming device for forming into a shape. (5) In the invention as set forth in claim 4, it is preferable that the transfer pipe is provided with a static line mixer. A sludge fuel production device characterized by: (6) In the invention set forth in claim 4 or 5, the forming device comprises an extrusion molding machine that forms pulverized coal mixed sludge into a vent shape or a thin plate shape. A sludge fuel production apparatus characterized in that: (7) In the invention according to claims 4 to 6, the shaping device includes a heating device that heats the shaped sludge. Sludge fuel production equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4658283A JPS59170198A (en) | 1983-03-18 | 1983-03-18 | Method and apparatus for producing sludge fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4658283A JPS59170198A (en) | 1983-03-18 | 1983-03-18 | Method and apparatus for producing sludge fuel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59170198A true JPS59170198A (en) | 1984-09-26 |
Family
ID=12751291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4658283A Pending JPS59170198A (en) | 1983-03-18 | 1983-03-18 | Method and apparatus for producing sludge fuel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59170198A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06182400A (en) * | 1992-12-22 | 1994-07-05 | Hymo Corp | Method for dehydrating sludge |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55126592A (en) * | 1979-03-20 | 1980-09-30 | Tooru Seki | Manufacture of coallcontained sludge pellet useful for fertilizer and fuel |
| JPS5980494A (en) * | 1982-06-18 | 1984-05-09 | Ishigaki Kiko Kk | Solid fuel using sludge of sewage and its preparation |
| JPS5980495A (en) * | 1982-07-12 | 1984-05-09 | Ishigaki Kiko Kk | Combustion auxiliary material for furnace using sludge of sewage and its preparation |
-
1983
- 1983-03-18 JP JP4658283A patent/JPS59170198A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55126592A (en) * | 1979-03-20 | 1980-09-30 | Tooru Seki | Manufacture of coallcontained sludge pellet useful for fertilizer and fuel |
| JPS5980494A (en) * | 1982-06-18 | 1984-05-09 | Ishigaki Kiko Kk | Solid fuel using sludge of sewage and its preparation |
| JPS5980495A (en) * | 1982-07-12 | 1984-05-09 | Ishigaki Kiko Kk | Combustion auxiliary material for furnace using sludge of sewage and its preparation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06182400A (en) * | 1992-12-22 | 1994-07-05 | Hymo Corp | Method for dehydrating sludge |
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