JPH0731957A - Method for recycling collected ash of petroleum combustion boiler - Google Patents

Method for recycling collected ash of petroleum combustion boiler

Info

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
Application number
JP26030793A
Other languages
Japanese (ja)
Inventor
Hideo Tomoyasu
秀夫 友安
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP26030793A priority Critical patent/JPH0731957A/en
Publication of JPH0731957A publication Critical patent/JPH0731957A/en
Pending legal-status Critical Current

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

PURPOSE:To obtain a hardened material essentially consisting of gypsum or calcium sulfoaluminate by mixing and kneading collected ash, cement, water, etc., to decompose ammonium sulfate in the collected ash into ammonia and gypsum and making the kneaded material a granulated hardened material by hydration action. CONSTITUTION:When collected ash collected by a dust collector installed in a waste gas flue of a petroleum combustion furnace is added with cement, water, etc., and the ash is thrown in a kneading cylinder 4 of a vibration kneading and granulating device, the ash, the cement and the water, etc., are subjected to the action such as mixing, kneading and daubing mutually between the media on the inner surface of the kneading cylinder 4 by a circular vibration of a vibration generator 5. Ammonium sulfate is decomposed into gaseous ammonia and gypsum by hydration reaction of calcium in cement components. The gaseous ammonia is sent to a water spray and suction tower by an exhaust casing 4-4 without being accumulated, and the kneaded material in the kneading cylinder 4 falls into a granulating cylinder from the gap between a medium projection preventing plate 4-2 and the end part of the kneading casing 4 with the rotation of a group of the media by centrifugal force, and is granulated to turn into hardened material by hydration reaction of cement.

Description

【発明の詳細な説明】Detailed Description of the Invention

【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.

【図面の簡単な説明】[Brief description of drawings]

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.

【符号の説明】[Explanation of symbols]

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)

【特許請求の範囲】[Claims] 【請求項１】 アンモニアを用い石油燃焼炉の排ガスを
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. 【請求項２】 請求項１の方法で使用するセメントとし
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.
JP26030793A 1993-07-16 1993-07-16 Method for recycling collected ash of petroleum combustion boiler Pending JPH0731957A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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