JP2666206B2 - Slaked lime aqueous solution production equipment - Google Patents
Slaked lime aqueous solution production equipmentInfo
- Publication number
- JP2666206B2 JP2666206B2 JP5111190A JP11119093A JP2666206B2 JP 2666206 B2 JP2666206 B2 JP 2666206B2 JP 5111190 A JP5111190 A JP 5111190A JP 11119093 A JP11119093 A JP 11119093A JP 2666206 B2 JP2666206 B2 JP 2666206B2
- Authority
- JP
- Japan
- Prior art keywords
- slaked lime
- chamber
- aqueous solution
- sub
- lime aqueous
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F21/00—Dissolving
- B01F21/50—Elements used for separating or keeping undissolved material in the mixer
- B01F21/502—Baffles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F21/00—Dissolving
- B01F21/15—Dissolving comprising constructions for blocking or redispersing undissolved solids, e.g. sieves, separators or guiding constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F21/00—Dissolving
- B01F21/20—Dissolving using flow mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、水道水の改善のために
用いられる消石灰水溶液の製造装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing slaked lime aqueous solution used for improving tap water.
【０００２】[0002]
【従来の技術】従来、水道水の赤水防止対策としては苛
性ソーダ注入法、ソーダ灰注入法、消石灰注入法等が知
られているが、最近消石灰注入法が注目されている。消
石灰は単に水のｐＨを上げるだけでなく主成分のカルシ
ウムが健康上も良いと言われていること、さらには消石
灰を飛散し易い粉体としてではなく水溶液として注入す
る技術が開発されたことなどから水道事業体の浄水場で
多く採用されてきている。2. Description of the Related Art Conventionally, caustic soda injection, soda ash injection, slaked lime injection, and the like have been known as measures for preventing red water from tap water. Recently, however, slaked lime injection has attracted attention. It is said that slaked lime not only raises the pH of water but also that the main component calcium is good for health, and furthermore, a technology has been developed to inject slaked lime as an aqueous solution instead of as a powder that is easy to fly. It has been widely adopted in water treatment plants.
【０００３】消石灰水溶液を連続的に製造する装置とし
ては、例えば特公昭６３−２８９０号公報に記載されて
いる装置が知られている。この公知装置は、円筒型また
は角筒型の溶解槽の底部に給水管及び不溶物排出口、該
給水管のすぐ上の位置には水平に回転する撹拌翼が設け
られ、槽上部に消石灰水溶液取出管を有する構成となっ
ている。この公知装置では、消石灰は溶解層内の水層に
コンテナバッグから吸引ファン等により所定量供給さ
れ、その自然沈降を待って消石灰水溶液の製造運転が開
始される。製造される消石灰水溶液濃度が低下時には、
一旦運転を止め、新たに消石灰の供給がなされる。As an apparatus for continuously producing slaked lime aqueous solution, for example, an apparatus described in Japanese Patent Publication No. 63-2890 is known. In this known apparatus, a water supply pipe and an insoluble matter discharge port are provided at the bottom of a cylindrical or square cylindrical dissolution tank, and a horizontally rotating stirring blade is provided at a position immediately above the water supply pipe. It has a configuration with an extraction pipe. In this known apparatus, a predetermined amount of slaked lime is supplied to the water layer in the dissolving layer from a container bag by a suction fan or the like, and after the natural settling thereof, the production operation of the slaked lime aqueous solution is started. When the concentration of the produced slaked lime aqueous solution decreases,
The operation is stopped once and slaked lime is newly supplied.
【０００４】運転を停止し、消石灰を供給し、その自然
沈降を待っての再開では、特に消石灰粉体が見かけ比重
がほぼ０．６で沈降に時間がかかり長時間を要すること
から、上記公知装置を２基用意し、切り替え運転するこ
とが提案されている（特公昭６３−３５５７４号公
報）。[0004] When the operation is stopped, slaked lime is supplied, and the slaked lime powder is restarted after waiting for natural sedimentation, the slaked lime powder has an apparent specific gravity of approximately 0.6, takes a long time to settle, and takes a long time. It has been proposed to prepare two devices and perform switching operation (Japanese Patent Publication No. 63-35774).
【０００５】[0005]
【発明が解決しようとする課題】上述したように、上記
の公知装置では、新たな消石灰の供給時に長時間要する
ばかりでなく、得られる消石灰水溶液の流量を決定する
溶解槽上部における水の上昇速度はせいぜい０．２ｍｍ
／ｓｅｃが限界である。すなわち、上記撹拌翼以外特別
の手段を有していない上記公知装置では、この水の上昇
速度を上記値以上にすると、未溶解消石灰粒子が消石灰
水溶液に混入してしまうためである。したがって、製造
される水溶液の量は上記０．２ｍｍ／ｓｅｃという上昇
速度の限界値で得られる流量が最大値となってしまう。As described above, in the above-mentioned known apparatus, it takes not only a long time to supply new slaked lime, but also the rising speed of water in the upper part of the dissolving tank which determines the flow rate of the obtained slaked lime aqueous solution. 0.2mm at most
/ Sec is the limit. That is, in the known device having no special means other than the stirring blade, if the rising speed of the water is higher than the above value, undissolved slaked lime particles are mixed into the slaked lime aqueous solution. Therefore, as for the amount of the aqueous solution to be produced, the flow rate obtained at the limit value of the rising speed of 0.2 mm / sec becomes the maximum value.
【０００６】本発明は、消石灰の沈降・溶解を円滑かつ
促進せしめることにより、消石灰供給時の時間の短縮を
図り、必要に応じ連続供給も可能にし、さらに溶解槽内
の未溶解消石灰粒子の流動層高さを抑制して水の上昇速
度（供給速度）を大きくすることのできる消石灰水溶液
製造装置を提供することを目的とする。According to the present invention, the time required for slaked lime supply is reduced by facilitating and accelerating the settling and dissolving of slaked lime, continuous feeding is enabled if necessary, and the flow of undissolved slaked lime particles in the melting tank is further improved. It is an object of the present invention to provide a slaked lime aqueous solution manufacturing apparatus capable of suppressing a bed height and increasing a rising speed (supply speed) of water.
【０００７】[0007]
【課題を解決するための手段】本発明によれば、上記目
的は筒型の溶解槽の下部に給水管がそして上部に消石灰
水溶液取出管がそれぞれ接続され、溶解槽内底部に撹拌
翼を有する消石灰溶解装置において、溶解槽の水面から
中間位置まで垂下する仕切壁によって、上記溶解槽の内
部が、流動層高抑制装置を備えた主室と消石灰供給のた
めの副室とに仕切られ、主室の下部に給水管がそして主
室の上部に消石灰水溶液取出管が接続されており、副室
内の水面上に供給された消石灰粉体と水とを強制的に接
触させ下向き流を生じせしめる強制接触手段が上記副室
に設けられていることにより達成される。According to the present invention, a water supply pipe is connected to a lower part of a cylindrical dissolving tank and a slaked lime aqueous solution extracting pipe is connected to an upper part thereof, and a stirring blade is provided at a bottom of the dissolving tank. in slaked lime dissolver, by a partition wall extending downwardly from the water surface of the dissolution vessel to an intermediate position, inside said dissolving tank is partitioned into the sub-chamber for the main chamber and slaked lime feed having a fluidized bed height suppression device, the main Water pipe at the bottom of the room and the main
A slaked lime aqueous solution extraction pipe is connected to the upper part of the chamber, and forcibly contacts the slaked lime powder supplied on the water surface in the sub-chamber with water.
This is achieved by providing the sub-chamber with a forced contact means for causing a touch and a downward flow .
【０００８】[0008]
【作用】本発明装置にあって、消石灰は副室内の水面上
に投入・供給される。該副室には強制接触手段が設けら
れており、上記消石灰は水と強制的に接触させられて速
やかにスラリーとなって沈降する。その際、該強制接触
手段が下向き流を生ずるようになっているので、沈降は
促進される。In the apparatus of the present invention, slaked lime is charged and supplied onto the water surface in the sub-chamber. The subchamber is provided with a forced contact means, and the slaked lime is forcibly brought into contact with water to quickly become a slurry and settle. In that case, the sedimentation is promoted since the forced contact means generates a downward flow.
【０００９】副室で水と十分に接触した消石灰は沈降し
て溶解槽の底部にスラリーとして堆積する。溶解槽の底
部は主室と副室が連通しており、そこでは撹拌翼が回転
しており、また給水管から給水を受けている。したがっ
て、スラリーは撹拌を受けて流動層をなし、十分に水に
溶解して生成される消石灰水溶液は若干の流動層の未溶
解消石灰粒子を含有した状態で主室内を上昇する。The slaked lime which has come into sufficient contact with water in the sub-chamber sediments and deposits as slurry at the bottom of the dissolution tank. The bottom of the dissolution tank communicates with the main chamber and the sub-chamber, where the stirring blades rotate and receive water from a water supply pipe. Therefore, the slurry forms a fluidized bed under agitation, and the slaked lime aqueous solution generated by sufficiently dissolving in water rises in the main chamber in a state containing some undissolved slaked lime particles of the fluidized bed.
【００１０】かかる水溶液は上昇すると流動層高抑制装
置に達し、ここで水溶液中の上記未溶解消石灰粒子はそ
れ以上の上昇が阻止され、水溶液のみが上昇する。かく
して、未溶解消石灰を殆ど含有しない消石灰水溶液のみ
が消石灰水溶液取出管から取り出される。When the aqueous solution rises, it reaches the fluidized bed height suppression device, where the undissolved slaked lime particles in the aqueous solution are prevented from further rising, and only the aqueous solution rises. Thus, only the slaked lime aqueous solution containing almost no undissolved slaked lime is taken out from the slaked lime aqueous solution extraction pipe.
【００１１】[0011]
【実施例】以下、添付図面にもとづき、本発明の実施例
を説明する。Embodiments of the present invention will be described below with reference to the accompanying drawings.
【００１２】〈第一実施例〉図１は本発明の第一実施例
装置を示す概要構成図である。<First Embodiment> FIG. 1 is a schematic structural view showing an apparatus according to a first embodiment of the present invention.
【００１３】図において、符号１は筒状の溶解槽であ
り、下部が下方に向け直径を小とするテーパ断面を有し
ている。該溶解槽１は、中間位置まで垂下するように蓋
部材２に取り付けられた仕切壁３によって主室４と副室
５とに区分されている。上記溶解槽１の主室４側の底部
には、外部から該溶解槽１内に給水を行なうための給水
管６と、適宜時期に不溶物を外部に排出するための排出
管７がそれぞれ弁を介して接続されている。また、上記
溶解槽１の主室４側の上部には消石灰水溶液取出管８が
接続されている。In FIG. 1, reference numeral 1 denotes a cylindrical melting tank, whose lower part has a tapered cross section whose diameter decreases downward. The dissolving tank 1 is divided into a main chamber 4 and a sub chamber 5 by a partition wall 3 attached to a lid member 2 so as to hang down to an intermediate position. At the bottom of the dissolving tank 1 on the main chamber 4 side, a water supply pipe 6 for supplying water to the dissolving tank 1 from the outside and a discharge pipe 7 for discharging insoluble matter to the outside at an appropriate time are valved. Connected through. A slaked lime aqueous solution discharge pipe 8 is connected to an upper portion of the melting tank 1 on the main chamber 4 side .
【００１４】上記溶解槽１の主室４には、駆動軸９によ
って回転を受ける水平撹拌翼１０を上記主室４の底部に
有する撹拌装置１１が設けられている。また、主室４と
副室５とを仕切る仕切壁３の高さ方向の範囲にて、主室
４内に流動層高抑制装置１２が設けられている。The main chamber 4 of the melting tank 1 is provided with a stirrer 11 having a horizontal stirring blade 10 at the bottom of the main chamber 4 which is rotated by a drive shaft 9. Further, a fluidized bed height suppression device 12 is provided in the main chamber 4 within a range in the height direction of the partition wall 3 that separates the main chamber 4 and the sub-chamber 5.
【００１５】上記流動層高抑制装置１２は、好ましくは
図示のごとく二枚以上がほぼ等間隔で平行に配列された
傾斜板より成っている。傾斜板は同一方向に傾斜するも
ので十分であるが、より好ましくは、図示のごとく、傾
斜が逆方向となっている二つの群の傾斜板１２Ａ，１２
Ｂから成る。上記平行な傾斜板同士の間隔は５〜７０ｍ
ｍ位が良い。The fluidized bed height suppressing device 12 preferably comprises two or more inclined plates arranged in parallel at substantially equal intervals as shown in the figure. It is sufficient for the inclined plates to be inclined in the same direction, but more preferably, as shown, two groups of inclined plates 12A and 12A having inclined directions opposite to each other.
B. The distance between the parallel inclined plates is 5 to 70 m
The m rank is good.
【００１６】副室５の蓋部材２には、消石灰の投入ホッ
パ１４が弁１５を介して設けられ、また、水面上に投入
された消石灰の飛散を防止するためのスプレー装置１６
も設けられている。The lid 2 of the sub-chamber 5 is provided with a slaked lime charging hopper 14 through a valve 15, and a spray device 16 for preventing the slaked lime charged on the water surface from scattering.
Is also provided.
【００１７】上記副室５は下方に延びる無底筒体１７が
設けられ、その中に強制接触手段としての回転翼１８が
水面近傍の水を撹拌するように設けられている。該回転
翼１８は水を撹拌し、かつ撹拌と共に下向き流１９を生
ずるようになっている。 The sub-chamber 5 is provided with a bottomless cylindrical body 17 extending downward, in which a rotating blade 18 as a forced contact means is provided so as to stir water near the water surface. The rotary blades 18 and stirred water, and is adapted to produce a downward flow 19 with stirring.
【００１８】かかる構成の本実施例装置にあっては、消
石灰水溶液は次の要領で製造される。In the apparatus of this embodiment having such a configuration, the slaked lime aqueous solution is produced in the following manner.
【００１９】ホッパ１４から所定量の消石灰が副室５
の水面に投下される。その際、飛散する消石灰粒子の外
気への逸散がスプレー１６により防止される。投下直後
に溶解せずに水面上で浮遊する消石灰は、回転翼１８に
より撹拌されて強制的に水と接触させられそして回転翼
１８により生じた下向き流１９に乗りスラリーとなって
沈降が促進される。A predetermined amount of slaked lime is supplied from the hopper 14 to the sub-chamber 5.
Is dropped on the surface of the water. At this time, the scattered slaked lime particles are prevented from escaping to the outside air by the spray 16. Floating on the water surface without being dissolved immediately dropped slaked lime, are forced to contact with water is agitated by rotating blades 18 and rotor blades
The slurry flows on the downward flow 19 generated by the slurry 18 to form a slurry and promote sedimentation.
【００２０】沈降したスラリーは溶解槽１の底部にて
堆積するが、ここで撹拌翼１０による撹拌を受けて流動
層を形成し、さらには、給水管６から給水された水との
接触を受け、溶解が進んで消石灰水溶液となって行く。The settled slurry is deposited at the bottom of the dissolving tank 1, where it is stirred by the stirring blade 10 to form a fluidized bed, and further contacted with water supplied from the water supply pipe 6. Dissolution proceeds to form slaked lime aqueous solution.
【００２１】上記消石灰水溶液は主室４中を上昇す
る。その際、上昇する消石灰水溶液中には流動層内の未
溶解消石灰粒子が若干含有されており、これも一緒に上
昇する。The slaked lime aqueous solution rises in the main chamber 4. At that time, the rising slaked lime aqueous solution contains a small amount of undissolved slaked lime particles in the fluidized bed, which rises together.
【００２２】上記未溶解消石灰粒子を含有する消石灰
水溶液は傾斜板１２Ａ，１２Ａ間そして傾斜板１２Ｂ，
１２Ｂ間の流路を順次上昇するが、消石灰水溶液に対し
て比重の高い未溶解消石灰粒子は上記流路の上側の傾斜
板にその上昇を抑制されて降下し、消石灰水溶液のみが
上昇を続ける。The aqueous slaked lime solution containing the undissolved slaked lime particles is supplied between the inclined plates 12A and 12A and between the inclined plates 12B and 12B.
While the ascending lime particles having a higher specific gravity with respect to the aqueous slaked lime solution are suppressed by the upper inclined plate of the flow passage and descend, the only slaked lime aqueous solution continues to rise.
【００２３】かくして、主室４の水面近傍は未溶解消
石灰粒子を殆ど含まない消石灰水溶液のみとなり、これ
が取出管８から取り出される。Thus, the vicinity of the water surface of the main chamber 4 contains only the slaked lime aqueous solution containing almost no undissolved slaked lime particles.
【００２４】〈第二実施例〉次に、図２にもとづき第二
実施例を説明する。なお、図において、前述の第一実施
例における図１と共通部分には同一符号を付してその説
明を省略する。<Second Embodiment> Next, a second embodiment will be described with reference to FIG. In the drawing, the same parts as those in FIG. 1 in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.
【００２５】本実施例装置において、主室４に設けられ
た流動層高抑制装置２１は一方の方向に傾斜せる一群の
傾斜板より成っている。勿論のことながら、本実施例で
も第一実施例のごとくの互いに逆向きとなった二つの群
の傾斜板を用いてもよい。以下の他の実施例でも同様で
ある。In the present embodiment, the fluidized bed height suppressing device 21 provided in the main chamber 4 is composed of a group of inclined plates inclined in one direction. Of course, in this embodiment, two groups of inclined plates which are opposite to each other as in the first embodiment may be used. The same applies to other embodiments described below.
【００２６】本実施例では、強制接触手段として回転翼
１８を採用しているが、これに加えて、溶解槽１の下部
と副室５の上部とをポンプ２２を有する接続管２３で接
続して、上記溶解槽１の下部のスラリーを上記副室５の
上部に供給し、さらにスラリーの溶解を促進せしめてい
ると共に、ホッパ１４から供給された消石灰は上記スラ
リーと一緒となってその沈降を早める。In this embodiment, the rotary blade 18 is employed as the forced contact means. In addition, the lower part of the melting tank 1 and the upper part of the sub-chamber 5 are connected by a connecting pipe 23 having a pump 22. Thus, the slurry at the lower part of the dissolving tank 1 is supplied to the upper part of the sub-chamber 5 to further promote the dissolution of the slurry, and the slaked lime supplied from the hopper 14 is settled together with the slurry. Hasten.
【００２７】上記副室５の上部へのスラリーの供給を、
二点鎖線で示すごとくポンプ２２Ａを有する接続管２３
Ａを主室４の上部と接続することにより、消石灰水溶液
の供給に代えることができる。この場合も、消石灰の沈
降を促進せしめることができる。The supply of the slurry to the upper part of the sub-chamber 5
Connecting pipe 23 having pump 22A as shown by a two-dot chain line
By connecting A to the upper part of the main chamber 4, supply of the slaked lime aqueous solution can be replaced. Also in this case, the settling of slaked lime can be promoted.
【００２８】本実施例でも、図３に示すごとく、副室５
内に下向きの旋回流を生ずるので、消石灰の沈降をさら
に早めることができ効果的である。そのためには、例え
ば上記の接続管２３；２３Ａを副室５に対し、上方から
みて接線方向、かつ若干下向きに接続すれば、接続管２
３からのスラリーあるいは接続管２３Ａからの消石灰水
溶液により上記の旋回流を得る。 Also in this embodiment, as shown in FIG.
Since a downward swirling flow is generated in the inside, the settling of slaked lime can be further accelerated, which is effective. For this purpose, for example, if the connection pipe 23; 23A is connected to the sub-chamber 5 in a tangential direction as viewed from above and slightly downward, the connection pipe 2;
The above-mentioned swirling flow is obtained by the slurry from No. 3 or the slaked lime aqueous solution from the connecting pipe 23A.
【００２９】また、副室５内における下向き流は、第一
実施例における回転翼に迎え角を設けることにより生じ
せしめることもできるが、図４のごとく、回転翼１８の
駆動軸を下方に延長しそこに他の回転翼２４を設け、該
他の回転翼２４に迎え角を設けるようにしてもよい。す
なわち、この場合上方の回転翼１８は撹拌のみを行な
い、下方の他の回転翼２４はさらなる撹拌と下向きの流
れを生ずる役目を担う。なお、この場合、図３に示すよ
うな接続管は有っても無くても、実施可能である。The downward flow in the sub-chamber 5 can be caused by providing the rotor with an angle of attack in the first embodiment, but as shown in FIG. 4, the drive shaft of the rotor 18 is extended downward. Alternatively, another rotor 24 may be provided, and the other rotor 24 may be provided with an angle of attack. That is, in this case, the upper impeller 18 performs only stirring, and the other lower impeller 24 plays a role of generating further stirring and a downward flow. In this case, the present invention can be implemented with or without a connecting pipe as shown in FIG.
【００３０】〈第三実施例〉図５に示される本実施例で
は強制接触手段が副室５内で下向き流のみならず上向き
流をも生じ、上下の循環を行なっている点に特徴があ
る。<Third Embodiment> The third embodiment shown in FIG. 5 is characterized in that the forced contact means generates not only a downward flow but also an upward flow in the sub-chamber 5 and circulates vertically. .
【００３１】本実施例の副室５内の無底筒体１７の内部
に、該無底筒体１７の中間部から無底筒状で下方に突出
して延びるドラフトチューブ３１が、上記無底筒体１７
に対し半径方向に所定間隔をもってほぼ同心に設けられ
ている。強制接触手段としての下向き流を生ずる回転翼
１８；２４は該ドラフトチューブ３１内に配設されてい
る。The inside of the bottomless cylinder 17 in auxiliary chamber 5 of this embodiment, draft tube 31 extending downwardly projecting from an intermediate portion in a bottomless cylindrical inorganic bottomed tubular body 17, the bottomless cylinder Body 17
Are provided substantially concentrically at predetermined intervals in the radial direction. The rotating blades 18; 24 for generating downward flow as forced contact means are disposed in the draft tube 31.
【００３２】したがって、本実施例では、上記ドラフト
チューブ３１内で下向き流が生じ、該ドラフトチューブ
３１の上方にて該ドラフトチューブ３１と無底筒体１７
の間の水を該ドラフトチューブ３１内に引き込むように
なり、ドラフトチューブ３１外では上昇流が生ずる。そ
の結果、副室５内で上下の循環流が生じ、消石灰の撹拌
・溶解が促進される。Accordingly, in the present embodiment, a downward flow is generated in the draft tube 31, and the draft tube 31 and the bottomless cylindrical body 17 are located above the draft tube 31.
Is drawn into the draft tube 31, and an ascending flow is generated outside the draft tube 31. As a result, a vertical circulating flow is generated in the sub-chamber 5, and the agitation and dissolution of slaked lime are promoted.
【００３３】本実施例では、強制接触手段を上記回転翼
１８；２４に代え、図６に示すごとく、エジェクタ３２
を用いることができる。その場合、該エジェクタ３２の
噴流は、主室４上部から取水されポンプ３３で圧送され
て接続管３４で該エジェクタに供給される消石灰水溶液
により形成される。この場合も、ドラフトチューブ３１
の内外での循環流が生ずる。In this embodiment, as shown in FIG. 6, an ejector 32 is used instead of the rotating blades 18;
Can be used. In this case, the jet of the ejector 32 is formed by the slaked lime aqueous solution which is taken in water from the upper part of the main chamber 4, pumped by the pump 33, and supplied to the ejector by the connecting pipe 34. Also in this case, the draft tube 31
A circulating flow is generated inside and outside of the device.
【００３４】[0034]
【発明の効果】本発明は以上のごとく、流動層高抑制装
置を有することにより大きい上昇速度で消石灰水溶液を
高能率に製造する場合に、限られた容積の副室で、消石
灰を強制的に水と接触させかつ下方に送り出すようにし
たので、きわめて効果的にスラリーが生成でき、上記消
石灰水溶液の製造に追従できるようになる。しかも、副
室は少なくとも水面域では主室と仕切られており、主室
から取水される消石灰水溶液中に、副室へ投入される消
石灰が混入することがないので、流動層高抑制装置への
消石灰の堆積のおそれがなく、消石灰水溶液は連続して
製造することが可能になり、生産性の向上が図れる。As described above, the present invention forcibly removes slaked lime in a sub-chamber having a limited volume when a slaked lime aqueous solution is produced at a high efficiency at a higher ascending speed by having a fluidized bed height suppressing device. Since the slurry is brought into contact with water and sent downward, a slurry can be produced very effectively, and the production of the slaked lime aqueous solution can be followed. Moreover, the sub-chamber is separated from the main chamber at least in the water surface area, and the slaked lime charged into the sub-chamber is not mixed into the slaked lime aqueous solution withdrawn from the main chamber. There is no risk of slaked lime being deposited, and the slaked lime aqueous solution can be continuously produced, thereby improving productivity.
【図１】本発明の第一実施例装置の概要構成図である。FIG. 1 is a schematic configuration diagram of an apparatus according to a first embodiment of the present invention.
【図２】第二実施例装置の概要構成図である。FIG. 2 is a schematic configuration diagram of a second embodiment apparatus.
【図３】第二実施例装置の変形例を示す概要構成図であ
る。FIG. 3 is a schematic configuration diagram showing a modification of the device of the second embodiment.
【図４】第二実施例装置のさらなる変形例を示す概要構
成図である。FIG. 4 is a schematic configuration diagram showing a further modified example of the device of the second embodiment.
【図５】第三実施例装置の概要構成図である。FIG. 5 is a schematic configuration diagram of a third embodiment device.
【図６】第三実施例装置の変形例を示す概要構成図であ
る。FIG. 6 is a schematic configuration diagram showing a modification of the device of the third embodiment.
１ 溶解槽 ３ 仕切壁 ４ 主室 ５ 副室 ６ 給水管 ８ 消石灰水溶液取出管 １０ 撹拌翼 １２ 流動層高抑制装置 １８ 強制接触手段（回転翼） ２２；２２Ａ ポンプ装置 ２３；２３Ａ 接続管 ２４ 強制接触手段（回転翼） ３１ ドラフトチューブ ３２ エジェクタ DESCRIPTION OF SYMBOLS 1 Dissolution tank 3 Partition wall 4 Main chamber 5 Subchamber 6 Water supply pipe 8 Slaked lime aqueous solution take-out pipe 10 Stirrer blade 12 Fluidized bed height suppression device 18 Forced contact means (rotary blade) 22; 22A Pump device 23; 23A Connection tube 24 Forced contact Means (rotary wing) 31 Draft tube 32 Ejector
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ０１Ｆ 7/16 Ｂ０１Ｆ 7/16 Ｋ Ｃ０１Ｆ 11/02 Ｃ０１Ｆ 11/02 Ａ Ｃ０２Ｆ 1/68 ５１０ Ｃ０２Ｆ 1/68 ５１０Ａ ５２０ ５２０Ｄ ５３０ ５３０Ａ Ｃ０４Ｂ 2/08 Ｃ０４Ｂ 2/08 (72)発明者 伊藤 彰洋 福島県いわき市小名浜港ケ丘４−４ (56)参考文献 特開 平５−68982（ＪＰ，Ａ) 実開 昭58−151430（ＪＰ，Ｕ) 実開 昭51−66154（ＪＰ，Ｕ)──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. 6 Identification code Agency reference number FI Technical display location B01F 7/16 B01F 7/16 K C01F 11/02 C01F 11/02 A C02F 1/68 510 C02F 1 / 68 510A 520 520D 530 530A C04B 2/08 C04B 2/08 (72) Inventor Akihiro Ito 4-4 Onahama Minatogaoka, Iwaki-shi, Fukushima (56) References JP-A-5-68982 (JP, A) Opened 58-151430 (JP, U) Opened 51-66154 (JP, U)
Claims (7)
部に消石灰水溶液取出管がそれぞれ接続され、溶解槽内
底部に撹拌翼を有する消石灰溶解装置において、溶解槽
の水面から中間位置まで垂下する仕切壁によって、上記
溶解槽の内部が、流動層高抑制装置を備えた主室と消石
灰供給のための副室とに仕切られ、主室の下部に給水管
がそして主室の上部に消石灰水溶液取出管が接続されて
おり、副室内の水面上に供給された消石灰粉体と水とを
強制接触させ下向き流を生じせしめる強制接触手段が上
記副室に設けられていることを特徴とする消石灰水溶液
製造装置。1. A slaked lime dissolving apparatus having a water supply pipe connected to a lower part of a cylindrical melting tank and a slaked lime aqueous solution outlet pipe connected to an upper part thereof, and having a stirring blade at a bottom part in the melting tank, from a water surface of the melting tank to an intermediate position. by hanging to the partition walls, the interior of the dissolving tank is partitioned into the sub-chamber for the main chamber and slaked lime feed having a fluidized bed height suppression device, the water supply pipe to the bottom of the main chamber
And the slaked lime aqueous solution extraction pipe is connected to the upper part of the main chamber
Cage, slaked lime powder was supplied onto the auxiliary combustion chamber water surface and water
An apparatus for producing a slaked lime aqueous solution , wherein a forced contact means for forcibly contacting and generating a downward flow is provided in the sub-chamber.
置に設けられた回転翼であることとする請求項１に記載
の消石灰水溶液製造装置。2. The slaked lime aqueous solution producing apparatus according to claim 1, wherein the forcible contact means is a rotary blade provided below the water surface and at a position near the water surface.
の上部とが該副室に給水するためのポンプ装置を介して
接続されていることとする請求項１に記載の消石灰水溶
液製造装置。3. The slaked lime aqueous solution production according to claim 1, wherein the lower part of the melting tank or the upper part of the main chamber and the upper part of the sub chamber are connected via a pump device for supplying water to the sub chamber. apparatus.
せる手段であることとする請求項１に記載の消石灰水溶
液製造装置。4. The slaked lime aqueous solution manufacturing apparatus according to claim 1, wherein the forced contact means is means for generating a swirling flow in the sub-chamber.
部もしくは主室の上部を副室の上部と接続し、略水平面
にて該副室に接線方向成分をもって開口する接続管と、
該接続管に設けられ副室に向け給水するポンプ装置と有
して成ることとする請求項４に記載の消石灰水溶液製造
装置。5. A means for generating a swirling flow includes connecting a lower part of the melting tank or an upper part of the main chamber to an upper part of the sub-chamber and opening the sub-chamber with a tangential component in a substantially horizontal plane;
The slaked lime aqueous solution manufacturing apparatus according to claim 4 , further comprising a pump device provided in the connection pipe and supplying water to the sub-chamber.
の無底筒状で下方に延びるドラフトチューブを有し、該
ドラフトチューブは副室の仕切壁を含む側壁との間に所
定間隔が保たれていることとする請求項１または請求項
２に記載の消石灰水溶液製造装置。6. A forced contact means has a bottom- less cylindrical and downwardly extending draft tube for guiding a downward flow, and the draft tube is maintained at a predetermined distance from a side wall including a partition wall of the sub-chamber. The slaked lime aqueous solution production apparatus according to claim 1 or 2, wherein the slaked lime aqueous solution is dropped.
壁と所定間隔を保ち無底筒状で下方に延びるドラフトチ
ューブと、該ドラフトチューブ内に配されたエジェクタ
と、主室の上部と上記エジェクタとを接続する接続管
と、該接続管に設けられ副室に向け給水するためのポン
プ装置とを有していることとする請求項１に記載の消石
灰水溶液製造装置。7. A draft tube extending downward at a predetermined interval from a side wall including a partition wall of the sub-chamber and having a bottomless cylindrical shape , and an ejector disposed in the draft tube. 2. The slaked lime aqueous solution production according to claim 1, further comprising a connecting pipe for connecting an upper part of the main chamber and the ejector, and a pump device provided in the connecting pipe for supplying water to the sub-chamber. apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5111190A JP2666206B2 (en) | 1993-04-15 | 1993-04-15 | Slaked lime aqueous solution production equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5111190A JP2666206B2 (en) | 1993-04-15 | 1993-04-15 | Slaked lime aqueous solution production equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06296979A JPH06296979A (en) | 1994-10-25 |
| JP2666206B2 true JP2666206B2 (en) | 1997-10-22 |
Family
ID=14554787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5111190A Expired - Fee Related JP2666206B2 (en) | 1993-04-15 | 1993-04-15 | Slaked lime aqueous solution production equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2666206B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4876574A (en) * | 1987-11-04 | 1989-10-24 | Canon Kabushiki Kaisha | Developing apparatus |
| CN1157504C (en) * | 2000-03-21 | 2004-07-14 | 亚洲电镀器材有限公司 | Mixing device |
| CN1314502A (en) * | 2000-03-21 | 2001-09-26 | 亚洲电镀器材有限公司 | Mixing device |
| JP5043306B2 (en) * | 2005-03-17 | 2012-10-10 | 株式会社クレハ環境 | Method for producing slaked lime aqueous solution |
| KR100762469B1 (en) * | 2006-12-27 | 2007-10-04 | 주식회사 포스코 | Calcium hydroxide supplying device for neutralization acid waste water |
| JP2010137224A (en) * | 2010-02-12 | 2010-06-24 | Kureha Engineering Co Ltd | Method for cleaning water |
| CN105753030A (en) * | 2016-02-17 | 2016-07-13 | 常熟市宏宇钙化物有限公司 | Multifunctional calcium hydroxide production device |
| WO2021006722A1 (en) * | 2019-07-11 | 2021-01-14 | Petroliam Nasional Berhad (Petronas) | A reactor and method for making calcium hydroxide |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5748846A (en) * | 1980-09-08 | 1982-03-20 | Shiro Okamura | Code conversion system |
| JP2565613B2 (en) * | 1991-04-26 | 1996-12-18 | 呉羽化学工業株式会社 | Method and apparatus for producing slaked lime aqueous solution |
-
1993
- 1993-04-15 JP JP5111190A patent/JP2666206B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06296979A (en) | 1994-10-25 |
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