JPH0731957A - Method for recycling collected ash of petroleum combustion boiler - Google Patents
Method for recycling collected ash of petroleum combustion boilerInfo
- Publication number
- JPH0731957A JPH0731957A JP26030793A JP26030793A JPH0731957A JP H0731957 A JPH0731957 A JP H0731957A JP 26030793 A JP26030793 A JP 26030793A JP 26030793 A JP26030793 A JP 26030793A JP H0731957 A JPH0731957 A JP H0731957A
- Authority
- JP
- Japan
- Prior art keywords
- kneading
- cement
- ash
- collected
- cylinder
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/062—Purification products of smoke, fume or exhaust-gases
- C04B18/064—Gypsum
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/021—Agglomerated materials, e.g. artificial aggregates agglomerated by a mineral binder, e.g. cement
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/062—Purification products of smoke, fume or exhaust-gases
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
【0001】[産業上の利用分野]本発明は石油系燃焼
炉の捕集灰を取扱いやすい再資源化物にする方法に関す
るものである.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for converting collected ash of a petroleum-based combustion furnace into a recyclable material which is easy to handle.
【0002】[從来の技術]重油燃焼炉の排ガスより捕
集した灰の嵩比重は0.1〜0.2位の非常に軽いもの
なる故運搬.貯藏の操作では発塵の問題が発生すると共
に吸湿するとアンモニアガスを発生する.以上の理由に
より特公平5−13718の様な湿式処理する方法があ
る、然し此の方法では工程が復雑で運転操作もはんざつ
になる問題がある。以上の理由により捕集灰の主成分た
るカーボンと硫安を分解し取扱しやす、硬化物にする方
法が求められている。[Technology of Rarai] Since the bulk specific gravity of the ash collected from the exhaust gas of a heavy oil combustion furnace is extremely light, it is about 0.1 to 0.2. In the storage operation, there is a problem of dust generation and ammonia gas is generated when moisture is absorbed. For the above reasons, there is a method of wet treatment such as Japanese Patent Publication No. 5-13718. However, this method has a problem that the process is complicated and the operation is awkward. For the above reasons, there is a demand for a method of decomposing carbon and ammonium sulfate, which are the main components of the collected ash, into a cured product that is easy to handle.
【0003】[発明が解決しようとする課題]本発明は
石油系燃料を使用する火力発電所等の排ガス処理にアン
モニアを用い脱硫,脱硝する裝置の集塵機捕集灰を振動
ミルで混練造粒し,せっこうを主成分とする硬化物,又
はカルシウムサルホアルミネートを主成分とする硬化物
にする方法を提供することである.[Problem to be Solved by the Invention] The present invention is to knead and granulate with a vibrating mill the ash collected from a dust collector of a device for desulfurization and denitration using ammonia for the treatment of exhaust gas from a thermal power plant using petroleum-based fuel. The present invention is to provide a method for preparing a cured product containing gypsum as a main component or a cured product containing calcium sulfaluminate as a main component.
【0004】[課題を解決するための手段]上記の課題
を達成するための振動ミルは図−1.図−2で示すよう
に(2)の彈性支持材で支持された(3)の支持台上に
(4)の混練筒を取付け,その(4)の混練筒の両側に
一対の同期運転される(5)の振動発生器を配置し,
(4)の混練筒の一端部に(4−1)の原料送入口を取
付け,他端の排出側に(4−2)の媒体突出防止板を
(4)の混練筒の端部と間隙をもうけて取付け,此の間
隙(4−3)の上半分に(4−4)の排気筒を有するカ
バーを取付け,下半分に混練筒より大きい直径を有する
(6)の半円筒樋を取付けた構造を基本とする振動混練
造粒裝置とする。以上の構造を有する振動ミルに,集塵
機で捕集した灰にセメント。水等を添加して振動ミルの
混練筒内に裝入する。混練作用により発生するアンモニ
アガスは排出部上部の排気筒より裝置外の散水吸収塔で
アンモニア水とする.混練筒と媒体突出板の間隙より排
出される混練物は造粒筒でセメント水和作用に依り造粒
硬化として排出する。捕集灰中にカーボンが多い場合は
添加剤のセメントはアルミナセメントを使用し造粒硬化
物とした後,流動焙焼炉又は廻転窯で焼成しカーボンを
除去しカルシウムサルホアルミネートを主成分とする硬
化物にする。[Means for Solving the Problems] A vibrating mill for achieving the above objects is shown in FIG. As shown in Fig.-2, the kneading cylinder of (4) is mounted on the support base of (3) supported by the elastic support material of (2), and a pair of synchronous operation is performed on both sides of the kneading cylinder of (4). The vibration generator of (5)
The raw material inlet of (4-1) is attached to one end of the kneading cylinder of (4), and the medium protrusion prevention plate of (4-2) is attached to the end of the kneading cylinder of (4) on the discharge side of the other end. Install a cover with an exhaust tube of (4-4) in the upper half of this gap (4-3), and a semi-cylindrical gutter of (6) with a diameter larger than the kneading tube in the lower half. The vibration kneading and granulating device is based on the above structure. The ash collected by the dust collector is cemented in the vibration mill having the above structure. Add water etc. and put into the kneading cylinder of the vibration mill. Ammonia gas generated by the kneading action is made into ammonia water in the sprinkler absorption tower outside the exhaust pipe from the exhaust pipe above the discharge part. The kneaded product discharged from the gap between the kneading cylinder and the medium projecting plate is discharged in the granulation cylinder as granulation hardening due to the cement hydration action. When there is a large amount of carbon in the collected ash, alumina cement is used as the additive cement to make a hardened granulated product, and then it is fired in a fluidized-bed roasting furnace or a rotary kiln to remove the carbon and make calcium sulfaluminate the main component. To make a cured product.
【0005】[作用]捕集灰にセメント.水等を添加し
振動ミルの混練筒に投入すると,振動発生器の円振動に
より混練筒内の媒体のすきまに原料が侵入するが,媒体
同志は遊星歯車の様に互に逆廻しながら混練筒内を媒体
群は混練筒の円振動方向と逆方向にまわる.そのため灰
とセメント.水等は媒体同志、混練筒内面で,まぜあわ
せ、ねりあわせ.なすりつけ等の作用が発生するため,
硫安はセメント成分中カルシウム水和反応によりアンモ
ニアガスとせつこうに分解する.媒体と媒体のすきまに
侵入する混練物により,混練筒内の媒体群は容積をます
ので,アンモニアガスはたまる事なく排出側の排気筒に
て散水吸収塔に送る事ができる.混練筒内での混練物は
粘性を増すが,媒体と媒体同志は互に逆転する故排出側
に送られ,媒体群の廻転により媒体突出防止板と混練筒
端部のすきまより遠心力により造粒筒に落下し半円筒の
円振動に造粒されたセメント水和反応により硬化物とす
る事が出来る。[Operation] Cement is added to the collected ash. When water is added to the kneading cylinder of the vibration mill, the raw material penetrates into the clearance of the medium in the kneading cylinder due to the circular vibration of the vibration generator. Inside, the medium group turns in the direction opposite to the circular vibration direction of the kneading cylinder. Therefore ash and cement. Water etc. are mixed and kneaded on the inside of the kneading cylinder. Since sizing and other effects occur,
Ammonium sulphate decomposes into ammonia gas and sputum due to calcium hydration in cement components. The volume of the medium group in the kneading cylinder is increased by the medium and the kneaded material that penetrates into the gap between the media, so that the ammonia gas can be sent to the sprinkler absorption tower through the exhaust side exhaust pipe without accumulating. The kneaded material in the kneading cylinder increases in viscosity, but the media and the media are sent to the discharge side because they are reversing each other, and are rotated by the media group to form by the centrifugal force from the clearance between the media protrusion prevention plate and the kneading cylinder end. A hardened product can be obtained by the hydration reaction of the cement dropped into the cylinder and granulated by the semi-cylindrical circular vibration.
【0006】[実施例]以下図−2型の振動混練造粒裝
置を使用した実施例について説明する。 実施例−1 上表の成分のもの100に対しポルトランドセメント
5.水7の割合で添加し混練造粒した製品の粒度.強度
は下表に示す 実施例−2 上表の成分のもの100に対しアルミナセメント.7.
水10の割で添加し混練造粒した。製品の粒度.強度は
下表に示す [Embodiment] An embodiment using the vibration kneading and granulating apparatus shown in FIG. 2 will be described below. Example-1 Portland cement 5. The particle size of the product added and kneaded and granulated at a ratio of 7 water. The strength is shown in the table below Example-2 Alumina cement against 100 of the components in the above table. 7.
Water was added in an amount of 10 and kneaded and granulated. Product granularity. The strength is shown in the table below
【0007】[発明の効果]かさ比重の軽い捕集灰を密
閉型円筒で連続混練するので処理中の粉塵はもれず,発
生するアンモニアガスは安水として再利用出来。セメン
トを用い混練しても混練筒内にセメント硬化付着成長す
る事がない.造粒物のかさ比重は0.4〜0.6位で野
積放置が出来る.固定炭素を取り除くため流動焙焼炉.
廻転窯で焼成しても粉化せずにカーボンを燃焼出来且せ
っこうは無水にする事が出来るので セメント製造用添
加物として利用出来る。[Advantages of the Invention] Since the collected ash having a low bulk specific gravity is continuously kneaded in a closed cylinder, dust during processing is not leaked and the generated ammonia gas can be reused as an ammonium hydroxide. Even if kneading is performed with cement, cement hardening and growth does not occur in the kneading cylinder. The bulk specific gravity of the granulated product is 0.4 to 0.6, and it can be left in Nozumi. Fluidized roasting furnace to remove fixed carbon.
It can be used as an additive for cement production because it can burn carbon without pulverization even if it is fired in a rotary kiln and can make gypsum anhydrous.
図−1は本発明の振動混練造粒機の排出部を示す斜視図 図−2は本発明の振動混練造粒機の全体図を示す斜視図 FIG. 1 is a perspective view showing a discharge part of the vibration kneading granulator of the present invention. FIG. 2 is a perspective view showing an overall view of the vibration kneading granulator of the present invention.
4−1原料送入口 4−2は媒体突出防止板、4−3は
隙間部、4−4は排気筒、4−5はボルト、4−6は固
定金物、4−7は水供給管。4-1 Raw Material Inlet Port 4-2 is a medium protrusion prevention plate, 4-3 is a gap portion, 4-4 is an exhaust tube, 4-5 is a bolt, 4-6 is a fixed metal object, 4-7 is a water supply pipe.
Claims (2)
処理する方法において,排ガス煙道中にもうけられた集
塵機により捕集された灰を,振動混練造粒裝置の混練筒
で捕集灰.セメント.水等を混合混練する事に依り,捕
集灰中の硫安をアンモニア,とせつこうに分解し,造粒
筒でセメントの水和作用に依り造粒硬化物にする方法.1. A method for treating exhaust gas of an oil combustion furnace using ammonia, wherein ash collected by a dust collector provided in an exhaust gas flue is collected by a kneading cylinder of a vibration kneading granulating device. cement. A method in which ammonium sulphate in the collected ash is decomposed into ammonia and sessetsu by mixing and kneading water, etc., and a granulation hardened product is obtained by the hydration of cement in a granulation cylinder.
てアルミナセメントを用いる捕集灰の処理方法.2. A method for treating collected ash using alumina cement as the cement used in the method of claim 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP26030793A JPH0731957A (en) | 1993-07-16 | 1993-07-16 | Method for recycling collected ash of petroleum combustion boiler |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP26030793A JPH0731957A (en) | 1993-07-16 | 1993-07-16 | Method for recycling collected ash of petroleum combustion boiler |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0731957A true JPH0731957A (en) | 1995-02-03 |
Family
ID=17346215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP26030793A Pending JPH0731957A (en) | 1993-07-16 | 1993-07-16 | Method for recycling collected ash of petroleum combustion boiler |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0731957A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001259596A (en) * | 2000-03-23 | 2001-09-25 | Hitachi Zosen Corp | Method for making incineration fly ash harmless |
JP2009062254A (en) * | 2007-09-10 | 2009-03-26 | Tokyo Institute Of Technology | Ultrahigh strength cement cured body, and method for producing the same |
CN104150515A (en) * | 2014-08-11 | 2014-11-19 | 航天推进技术研究院 | Method for extracting alumina from fly ash based on ammonium sulfate method |
-
1993
- 1993-07-16 JP JP26030793A patent/JPH0731957A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001259596A (en) * | 2000-03-23 | 2001-09-25 | Hitachi Zosen Corp | Method for making incineration fly ash harmless |
JP2009062254A (en) * | 2007-09-10 | 2009-03-26 | Tokyo Institute Of Technology | Ultrahigh strength cement cured body, and method for producing the same |
CN104150515A (en) * | 2014-08-11 | 2014-11-19 | 航天推进技术研究院 | Method for extracting alumina from fly ash based on ammonium sulfate method |
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