JPH0129222Y2 - - Google Patents
Info
- Publication number
- JPH0129222Y2 JPH0129222Y2 JP8924584U JP8924584U JPH0129222Y2 JP H0129222 Y2 JPH0129222 Y2 JP H0129222Y2 JP 8924584 U JP8924584 U JP 8924584U JP 8924584 U JP8924584 U JP 8924584U JP H0129222 Y2 JPH0129222 Y2 JP H0129222Y2
- Authority
- JP
- Japan
- Prior art keywords
- quicklime
- digestion
- opening
- digestion vessel
- plate
- 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
Links
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 114
- 230000029087 digestion Effects 0.000 claims description 80
- 239000000292 calcium oxide Substances 0.000 claims description 57
- 235000012255 calcium oxide Nutrition 0.000 claims description 57
- 239000002002 slurry Substances 0.000 claims description 45
- 239000004571 lime Substances 0.000 claims description 30
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 28
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 28
- 238000003756 stirring Methods 0.000 claims description 28
- 239000008267 milk Substances 0.000 claims description 27
- 210000004080 milk Anatomy 0.000 claims description 25
- 235000013336 milk Nutrition 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 230000004323 axial length Effects 0.000 claims 1
- 239000000920 calcium hydroxide Substances 0.000 description 14
- 235000011116 calcium hydroxide Nutrition 0.000 description 14
- 239000012535 impurity Substances 0.000 description 13
- 235000019621 digestibility Nutrition 0.000 description 11
- 239000002245 particle Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 239000008187 granular material Substances 0.000 description 7
- 239000013618 particulate matter Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000001079 digestive effect Effects 0.000 description 1
- 210000002249 digestive system Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は生石灰の消化装置に関し、特に生石灰
を水と接触させて連続的に消化させ高純度で濃度
が一定の石灰乳スラリーを製造出来る生石灰の消
化装置に関するものである。[Detailed description of the invention] [Industrial application field] The present invention relates to a quicklime digestion device, in particular a quicklime digester that can continuously digest quicklime by contacting it with water to produce a milky lime slurry of high purity and constant concentration. The invention relates to a digestive system.
石灰乳スラリーの製造方法は消化容器内に原料
の生石灰（CaO）と水（H2O）とを供給し生石
灰を消化反応させて消石灰（Ca（OH）2）となし
石灰乳スラリーにするものである。
The method for producing milk-lime slurry is to feed the raw materials quicklime (CaO) and water (H 2 O) into a digestion vessel, and to cause the quicklime to undergo a digestive reaction and turn into slaked lime (Ca(OH) 2 ), making milk-lime slurry. It is.
従来の連続的な生石灰の消化装置としては、例
えば、中空円筒状の消化容器中にアルミナボール
等の硬質物体を入れ、中空円筒体を回転させて硬
質物体で生石灰粒を破砕しながら、水と接触させ
石灰乳スラリーを製造するものがある。 In a conventional continuous quicklime digestion device, for example, a hard object such as an alumina ball is placed in a hollow cylindrical digestion vessel, and the hollow cylinder is rotated to crush quicklime particles with the hard object while water and water are mixed. There is one that produces milk-of-lime slurry through contact.
このような消化装置を用いて高純度の石灰乳ス
ラリーを得るためには、あまり生石灰を細かく破
砕しないことが好ましいところから軽度の粉砕が
行なわれるように諸条件を設定している。これ
は、生石灰を過度に細かくすると、生石灰中の不
純物も細かくなり、後工程の濾別の際にスクリー
ンを通過して製品石灰乳スラリー中に混入し、そ
の不純物濃度を高めるようになるからである。 In order to obtain a high-purity lime milk slurry using such a digester, conditions are set so that light pulverization is performed, since it is preferable not to crush the quicklime too finely. This is because if the quicklime is made too fine, the impurities in the quicklime will also become fine and will pass through the screen during filtration in the post-process and be mixed into the product lime milk slurry, increasing the impurity concentration. be.
このように生石灰粒度を粗目にしているところ
から、高純度の石灰乳スラリーを得るための消化
装置内には常に多くの沈殿粒子が堆積する。とこ
ろが連続消化装置に於ては、消化装置内に沈殿粒
子が堆積するにも拘らず供給される生石灰と水の
量が一定であるために消化容器の容積が見掛け上
小さくなり消化容器内の滞留・反応時間が短かく
なつてしまうので、生石灰と水が充分に混合・接
触しないうちに消化装置を通過してしまう。また
堆積した沈殿粒子の量が多くなつた場合には或る
時間が経つと消化熱が過大となつて消化装置の出
入口から石灰乳スラリーが突沸して吹き出すとい
うトラブルが生じるおそれがある。このような消
化不充分や突沸というトラブルを防止するために
従来の生石灰の消化装置においては、消化容器内
に堆積する沈殿粒子をいかに除去するかが問題と
なつていた。
Due to the coarse grain size of quicklime, many precipitated particles are always deposited in the digester for obtaining high-purity lime milk slurry. However, in a continuous digester, the amount of quicklime and water supplied is constant despite the accumulation of precipitate particles in the digester, so the volume of the digester becomes smaller and stagnation occurs in the digester.・Since the reaction time becomes short, quicklime and water pass through the digester before they are sufficiently mixed and in contact with each other. Furthermore, if the amount of deposited precipitate particles increases, there is a risk that the heat of digestion will become excessive after a certain period of time, causing problems such as bumping and blowing out of the milky lime slurry from the inlet and outlet of the digester. In order to prevent such troubles as insufficient digestion and bumping, in conventional quicklime digestion equipment, the problem has been how to remove the precipitated particles that accumulate in the digestion vessel.
本考案は従来使用されている連続消化装置に於
ける以上の問題点を解消し、特殊な構造の消化容
器により沈殿物を石灰乳スラリーと共に連続的に
排出せしめ、消化容器内において生石灰と水とが
常に一定の割合で、かつ所定時間滞留して反応
し、発生する消化熱を適度に放熱させ、得られる
石灰乳スラリーの消化度や濃度が均一なものとな
る生石灰の消化装置を提供する事を目的とする。
This invention solves the above-mentioned problems in the conventional continuous digestion equipment, and uses a special structure of the digestion vessel to continuously discharge the sediment together with the lime-milk slurry. To provide a quicklime digestion device in which quicklime is reacted while remaining at a constant rate and for a predetermined period of time, the generated digestion heat is appropriately dissipated, and the digestibility and concentration of the lime milk slurry obtained are uniform. With the goal.
本考案は、上記目的を達成するために、消化容
器の出口側の部分に板状体を設け、この板状体に
よつて消化容器内の沈殿物を掻き上げ連続的に排
出させるように構成したものであつて、
両封円筒状であり、一方の端面板中心部には生
石灰及び水の導入用開口を有し、他方の端面板中
心部には石灰乳スラリー流出用開口を有し、軸方
向が略水平となるように、かつ軸回りに回転可能
に支承された消化容器を備えた生石灰の消化装置
において、
前記他方の端面板の内側部分に板状体を放射状
に設けると共に、これらの板状体の放射中心部分
に、前記流出用開口出口方向に向つて細くなる形
状の錐状体を設けたことを特徴とする生石灰の消
化装置、
を要旨とするものである。
In order to achieve the above object, the present invention is configured such that a plate-like body is provided on the outlet side of the digestion vessel, and the plate-like body scrapes up the sediment in the digestion vessel and continuously discharges it. It has a double-sealed cylindrical shape, and has an opening for introduction of quicklime and water in the center of one end plate, and an opening for lime milk slurry outflow in the center of the other end plate, In a quicklime extinguisher equipped with a extinguishing vessel rotatably supported around the axis so that the axial direction is substantially horizontal, plate-like bodies are provided radially on the inner part of the other end plate, and these The quicklime digestion device is characterized in that a cone-shaped body is provided in the radial center portion of the plate-like body, the cone-shaped body becoming narrower toward the outlet of the outflow opening.
なお本考案において、純度、濃度、消化度、石
灰乳スラリーの純度、石灰乳スラリーの濃度及び
石灰乳スラリーの消化度なる語句は、次のように
定義されて用いられる。 In the present invention, the terms purity, concentration, digestibility, purity of milk of lime slurry, concentration of milk of lime slurry, and digestibility of milk of lime slurry are defined and used as follows.
純度、高純度
石灰乳スラリーの固形分中のCa（OH）2の割合
（但し、Ca（OH）2の代りにCaO＋Ca（OH）2でも
良い。）
Ca（OH）2／Ca（OH）2＋不純物×100(%)
高純度とはこの値が98.0％以上の場合をいう
（通常）。 Purity, high purity Percentage of Ca(OH) 2 in the solid content of lime milk slurry (However, CaO + Ca(OH) 2 may be used instead of Ca(OH) 2. ) Ca(OH) 2 /Ca(OH) 2 + Impurities x 100(%) High purity means when this value is 98.0% or higher (usually).
濃度
(イ) 水と接触前
〔CaO＋不純物〕／〔CaO＋不純物〕＋H2O
×100(%)
(ロ) 消化工程
〔CaO＋Ca（OH）2＋不純物〕／〔CaO＋Ca（OH）2＋不
純物〕＋H2O
×100（％）
(ハ) 消化終了時
〔Ca（OH）2＋不純物〕／〔Ca（OH）2＋不純物〕＋H2
O
×100（％）
だしCa（OH）2は粒子として考え、水に溶解し
た分については考慮しない。 Concentration (a) Before contact with water [CaO + impurities] / [CaO + impurities] + H 2 O ×100(%) (b) Digestion process [CaO + Ca (OH) 2 + impurities] / [CaO + Ca (OH) 2 + impurities] + H 2 O ×100 (%) (c) At the end of digestion [Ca (OH) 2 + impurities] / [Ca (OH) 2 + impurities] + H 2
O ×100 (%) Dashi Ca(OH) 2 is considered as particles, and the amount dissolved in water is not considered.
消化度
CaOをH2Oと接触させて、CaOがCa（OH）2に
消化される割合のこと。 Digestibility The rate at which CaO is digested to Ca(OH) 2 when brought into contact with H 2 O.
〔CaO＋H2O→Ca（OH）2〕
具体的にはサンプリングしたCaO水和物（100
℃乾燥物）のイグロス（1000℃、１時間の灼熱減
量）を調べ、24.3％であれば消化度は100％にな
る。[CaO + H 2 O → Ca(OH) 2 ] Specifically, the sampled CaO hydrate (100
The digestibility is 100% if the Igros (1000°C, 1 hour ignition loss) of 24.3% is determined.
石灰乳スラリーの純度
石灰乳スラリーの固形分中のCa（OH）2の割合
Ca（OH）2／Ca（OH）2＋不純物×100（％）
石灰乳スラリーの濃度
〔Ca（OH）2＋不純物〕／〔Ca（OH）2＋不純物〕＋H2
O
×100（％）
石灰乳スラリーの消化度
と同様、CaOがH2Oと混合され水和が進行
（消化）してCa（OH）2＋CaO＋H2Oとなるが（最
終的にはCa（OH）2＋H2O）、石灰乳スラリーの固
形物をサンプリングし乾燥（100℃）してイグロ
スをはかり、その値を24.3で割つた（％）を「石
灰乳スラリーの消化度」と称する。 Purity of lime milk slurry Proportion of Ca (OH) 2 in the solid content of lime milk slurry Ca (OH) 2 /Ca (OH) 2 + impurities x 100 (%) Concentration of lime milk slurry [Ca (OH) 2 + Impurities] / [Ca(OH) 2 + impurities] + H 2
O × 100 (%) Similar to the digestibility of lime milk slurry, CaO is mixed with H 2 O and hydration progresses (digestion) to become Ca(OH) 2 + CaO + H 2 O (finally Ca( OH) 2 +H 2 O), sample the solid matter of the lime milk slurry, dry it (100°C), weigh the Igross, and divide the value by 24.3 (%), which is called the "digestibility of the lime milk slurry".
以下図面に示す実施例を参照して本考案につい
てさらに詳細に説明する。
The present invention will be described in more detail below with reference to embodiments shown in the drawings.
第１図は本考案の実施例装置の全体的な系統図
であり、両封円筒状の消化容器１０の外周面には
レール１２，１４が取り付けられ、回転用ローラ
１６，１８に支承され駆動装置（図示せず）によ
つて回転される。消化容器１０の一方の端面板２
０の中心部には原料導入用の開口２２が設けら
れ、他方の端面板２４の中心部には石灰乳スラリ
ーの流出用開口２６が設けられ、かつこの流出用
開口２６から流れ出た石灰乳スラリーをガイドす
るガイドパイプ２８が端面板２４の外側に取り付
けられている。このパイプ２８は、図示の如く端
面板２４から遠ざかるにつれ拡径する形状であ
る。 FIG. 1 is an overall system diagram of an embodiment of the device of the present invention, in which rails 12 and 14 are attached to the outer peripheral surface of a double-sealed cylindrical digestion vessel 10, supported by rotating rollers 16 and 18 and driven. Rotated by a device (not shown). One end plate 2 of the digestion vessel 10
An opening 22 for introducing the raw material is provided in the center of the end plate 24, and an opening 26 for milk of lime slurry to flow out is provided in the center of the other end plate 24. A guide pipe 28 is attached to the outside of the end plate 24. The pipe 28 has a shape whose diameter increases as it moves away from the end plate 24 as shown in the figure.
原料となる生石灰３０はホツパ３２からガイド
３４を経て、また水３６はパイプ３８を経て、そ
れぞれ導入用開口２２から消化容器１０内へ供給
される。 The raw material quicklime 30 is supplied from the hopper 32 through the guide 34, and the water 36 is supplied through the pipe 38 from the introduction opening 22 into the digestion vessel 10.
消化容器１０内で反応して生じた石灰乳スラリ
ーは流出用開口２６、ガイドパイプ２８、受け具
４０を経て篩４２上に供給され、粒状物４６が取
り除かれてタンク４４内に製品石灰乳スラリーと
して貯留される。粒状物４６は篩４２上を移動
し、粒状物容器４８に導入される。 The lime milk slurry produced by the reaction in the digestion vessel 10 is fed onto a sieve 42 through the outflow opening 26 , the guide pipe 28 , and the receiver 40 , where the particulate matter 46 is removed and the product lime milk slurry is delivered into the tank 44 . It is stored as . The granules 46 move over the sieve 42 and are introduced into the granules container 48 .
次に消化容器１０の構成について説明する。 Next, the configuration of the digestion container 10 will be explained.
第２図は消化容器１０の斜視図であり、内部構
造を明瞭に示すために端面板２４近傍の部分は消
化容器内部を透視して図示してある。また第３図
は消化容器１０の左側面図、第４図は右側面図、
第５図は第２図〜線に沿う断面図である。 FIG. 2 is a perspective view of the digestion vessel 10, and in order to clearly show the internal structure, a portion near the end plate 24 is shown as seeing through the inside of the digestion vessel. Also, FIG. 3 is a left side view of the digestion vessel 10, FIG. 4 is a right side view,
FIG. 5 is a sectional view taken along the line from FIG. 2.
図示の如く、端面板２４の消化容器内側の部分
には複数個（本実施例では３個）の板状体５０が
放射状に設けられ、板状体５０の放射中心側の部
分には流出用開口２６出口方向に向つて細くなる
形状の錐状体５２が消化容器１０に対して同軸に
なるよう設けられている。本実施例においては、
板状体５０は端面板２４に垂直な平板状であり、
その放射方向先端部分は消化容器１０の内周壁面
に接続されており、かつこの先端部分は他方の端
面板２０方向へ若干延在され、板状体５０が略Ｌ
字形となつている。 As shown in the figure, a plurality of (three in this embodiment) plate-like bodies 50 are provided radially on the inner side of the digestion vessel of the end plate 24, and a portion of the plate-like body 50 on the radial center side is used for outflow. A cone-shaped body 52 having a shape that becomes narrower toward the exit of the opening 26 is provided so as to be coaxial with the digestion vessel 10. In this example,
The plate-like body 50 has a flat plate shape perpendicular to the end plate 24,
Its radial tip portion is connected to the inner circumferential wall surface of the digestion vessel 10, and this tip portion extends slightly in the direction of the other end plate 20, so that the plate-like body 50 is approximately L
It is shaped like a letter.
板状体５０の放射中心部に取り付けられた錐状
体５２は、本実施例では円錐状であつてその先端
部分は流出用開口２６から若干突出している。 In this embodiment, the cone-shaped body 52 attached to the radial center of the plate-like body 50 has a conical shape, and its tip portion slightly protrudes from the outflow opening 26 .
なお第６図は板状体５０及び錐状体５２の形状
を示すと共に、板状体５０、錐状体５２と端面板
２４、開口２６との係合関係を説明する図面であ
る。 FIG. 6 is a drawing showing the shapes of the plate-shaped body 50 and the cone-shaped body 52, and also explains the engagement relationship between the plate-shaped body 50 and the cone-shaped body 52, the end face plate 24, and the opening 26.
本実施例においては、消化容器１０の内部に、
生石灰と水とを充分に撹拌するために、撹拌翼５
４が複数個等間隔に設けられている。この撹拌翼
５４は、長方形の板状部材であつて消化容器１０
の軸方向に延在するよう消化容器１０の略中央部
の内周壁面に立設され、かつ第２図−線に沿
う断面図である第７図に示す如く、消化容器１０
の周壁面に立てた法線に対して傾斜されている。
（第７図のθは法線ｈに対する傾斜角度を示す。）
また撹拌翼５４の根元の部分には、長方形状の孔
５６が設けられている。 In this embodiment, inside the digestion container 10,
In order to sufficiently stir quicklime and water, stirring blades 5 are used.
4 are provided at equal intervals. This stirring blade 54 is a rectangular plate-like member and is
As shown in FIG. 7, which is a sectional view taken along the line of FIG.
It is inclined with respect to the normal to the surrounding wall surface.
(θ in Figure 7 indicates the inclination angle with respect to the normal h.)
Further, a rectangular hole 56 is provided at the base of the stirring blade 54.
次に上記実施例装置における各部材の作用効果
及びその好ましい形状、寸法等について説明す
る。 Next, the effects, preferred shapes, dimensions, etc. of each member in the device of the above embodiment will be explained.
撹拌翼５４は、供給された生石灰と水とをより
十分に撹拌し十分な反応を行なわせる作用を有す
るものである。この撹拌翼５４は消化容器１０の
内壁に６cm〜10cmの間隔で等間隔に設けるのが好
ましい。通常供給される生石灰３０は５〜20mmの
粒径なので撹拌翼５４の間隔が６cm未満であると
粒状生石灰が撹拌翼５４にひつかかり、消化容器
１０内に滞留する沈殿物の量が増加し消化容器１
０内の有効容積が減少する。また10cmを超えた場
合には生石灰と水との撹拌効果が小さくなる。撹
拌翼５４の寸法は特に限定されるものではない
が、生石灰と水との接触を充分にし、消化速度を
適度に保つためには長さａ（第２図参照）が消化
容器１０の長さＬの1/2〜3/4であり高さｂ（第７
図参照）が消化容器１０の半径Ｄ／２の9/28を超え
ないことが好ましい。 The stirring blade 54 has the function of stirring the supplied quicklime and water more thoroughly to cause a sufficient reaction. The stirring blades 54 are preferably provided on the inner wall of the digestion vessel 10 at equal intervals of 6 cm to 10 cm. The quicklime 30 that is normally supplied has a particle size of 5 to 20 mm, so if the interval between the stirring blades 54 is less than 6 cm, the granular quicklime will get stuck on the stirring blades 54, increasing the amount of sediment remaining in the digestion vessel 10 and causing digestion. container 1
The effective volume within 0 is reduced. Furthermore, if the thickness exceeds 10 cm, the effect of stirring quicklime and water will be reduced. The dimensions of the stirring blades 54 are not particularly limited, but in order to ensure sufficient contact between quicklime and water and to maintain an appropriate digestion rate, the length a (see Fig. 2) should be the same as the length of the digestion vessel 10. 1/2 to 3/4 of L and height b (7th
(see figure) preferably does not exceed 9/28 of the radius D/2 of the digestion vessel 10.
また該撹拌翼５４は生石灰と水を均一に混合す
るために法線ｈから30〜45度の角度傾斜させる
（即ちθ＝30〜45゜とする）ことが好ましい。この
場合消化容器１０の回転方向は傾斜させた該撹拌
翼５４の鋭角側が消化容器１０内の石灰乳スラリ
ーを迎える側となる方向（第７図において矢印Ｒ
方向）とする。 Further, the stirring blades 54 are preferably inclined at an angle of 30 to 45 degrees from the normal h (that is, θ=30 to 45 degrees) in order to uniformly mix quicklime and water. In this case, the rotation direction of the digestion vessel 10 is the direction in which the acute angle side of the inclined stirring blades 54 receives the lime milk slurry in the digestion vessel 10 (arrow R in FIG. 7).
direction).
またこの撹拌翼５４に孔５６を設けると、撹拌
翼５４と消化容器１０内壁面との間に石灰乳スラ
リー粒分が付着・堆積して撹拌翼５４が丸みがか
つた形状となつて撹拌効果が減少することが防止
される。消化容器１０内の生石灰粒子は孔５６を
通過しながら適度に破砕・撹拌され、撹拌翼５４
に石灰乳スラリー粒分が付着・堆積することな
く、撹拌翼５４の撹拌効果が持続される。 Furthermore, when holes 56 are provided in the stirring blades 54, lime milk slurry particles adhere and accumulate between the stirring blades 54 and the inner wall surface of the digestion vessel 10, and the stirring blades 54 take on a rounded shape, resulting in a stirring effect. is prevented from decreasing. The quicklime particles in the digestion vessel 10 are crushed and stirred appropriately while passing through the holes 56, and are then crushed and stirred by the stirring blades 54.
The stirring effect of the stirring blades 54 is maintained without the milk of lime slurry particles adhering to or depositing on the surface.
板状体５０は前述の撹拌翼５４で充分に撹拌さ
れ消化された石灰乳スラリーやそれに含まれる粒
状物をかき上げ流出用開口２６から消化容器１０
外へ流出させる効果がある。このかき上げる効果
を最大に発揮するためには板状体５０の巾ｃ（第
２図参照）が消化容器１０の長さＬの1/10を超え
ないことが望ましい。 The plate-shaped body 50 is sufficiently stirred by the aforementioned stirring blades 54 to scrape up the digested milk-of-lime slurry and the granules contained therein and discharge it through the outflow opening 26 into the digestion vessel 10.
It has the effect of flushing it out. In order to maximize this scraping effect, it is desirable that the width c of the plate-shaped body 50 (see FIG. 2) does not exceed 1/10 of the length L of the digestion vessel 10.
また錐状体５２は板状体５０ですくい上げられ
た石灰乳スラリーやそれに含まれる粒状物をスム
ースに流出用開口２６に導く作用を有する。この
ような円錐体５２が設けられていなければ、板状
体５０によつてかき上げられた粒状物が開口２６
側へ流出せずに消化容器１０中に再度落下するた
め、消化容器１０中に滞留する石灰乳スラリー中
の粒状物の量が増え、流出用開口２６から排出さ
れる石灰乳スラリーの消化度や石灰乳スラリー濃
度を均一に保つことが出来ないようなる。この錐
状体５２は、その高さ（即ち錐状体頂点から錐状
体底面に下した線の長さ）が底面の直径よりも大
きい形状のものが好ましい。錐状体としては図示
の円錐体の他に、多角錐体も採用できる。 Further, the cone-shaped body 52 has the function of smoothly guiding the milk-of-lime slurry scooped up by the plate-shaped body 50 and the particulate matter contained therein to the outflow opening 26. If such a cone body 52 were not provided, the particulate matter scraped up by the plate body 50 would flow into the opening 26.
Since it does not flow out to the side and falls into the digestion vessel 10 again, the amount of particulate matter in the lime milk slurry that remains in the digestion vessel 10 increases, and the digestibility of the lime milk slurry discharged from the outflow opening 26 decreases. It becomes impossible to maintain a uniform lime milk slurry concentration. The cone 52 preferably has a shape in which the height (that is, the length of a line drawn from the apex of the cone to the bottom of the cone) is greater than the diameter of the bottom. In addition to the illustrated cone, a polygonal pyramid can also be used as the cone.
錐状体５２の先端は、端面板２４の端よりも若
干外側へ突出させるのが好ましい。錐状体５２の
突出の度合は、端面板２４から５mm以下程度の突
出長さが有れば充分である。なおこの突出長さが
５mmを超えると流出用開口２６の開口面積が小さ
くなつてしまうために、開口２６が閉塞したり消
化熱が消化容器１０内に蓄積し石灰乳スラリーが
突沸するというトラブルが生じるおそれがある。
なおこのような閉塞や突沸というトラブルをさけ
るためには流出用開口２６の開口面積の選定が重
要である。消化熱を適度に放熱させると共に石灰
乳スラリーや粒状物を適量排出させるためには流
出用開口２６の開口面積は、消化容器１０の端面
の面積の1.7〜4.0％が適当である。 It is preferable that the tip of the cone 52 protrudes slightly outward from the end of the end plate 24. It is sufficient that the cone 52 protrudes from the end plate 24 by a length of about 5 mm or less. Note that if this protrusion length exceeds 5 mm, the opening area of the outflow opening 26 will become small, which may cause problems such as the opening 26 being blocked or the digestion heat accumulating in the digestion vessel 10, causing the lime milk slurry to boil. There is a risk that this may occur.
In order to avoid such troubles such as blockage and bumping, it is important to select the opening area of the outflow opening 26. In order to appropriately dissipate the heat of digestion and discharge an appropriate amount of lime milk slurry and granules, the opening area of the outflow opening 26 is suitably 1.7 to 4.0% of the area of the end surface of the digestion vessel 10.
また流出用開口２６の消化容器内部側に設置さ
れた板状体５０及び錐状体５２は流出用開口２６
の流体通過の障害となるので、流出用開口２６の
開口面積は供給孔２２の開口面積より大きくする
のが好ましい。 In addition, the plate-shaped body 50 and the cone-shaped body 52 installed inside the digestion vessel of the outflow opening 26 are connected to the outflow opening 26.
Therefore, it is preferable that the opening area of the outflow opening 26 is larger than that of the supply hole 22.
供給孔２２の面積は消化容器１０内へ生石灰と
水がスムースに供給される大きさであれば良く特
に限定されるものではない。 The area of the supply hole 22 is not particularly limited as long as it is large enough to smoothly supply quicklime and water into the digestion vessel 10.
前述したように、石灰乳スラリーの消化度を均
一に保つためには、生石灰と水とが消化容器１０
内に適当な時間滞留し適度に撹拌される必要があ
る。そのためには消化容器１０の長さＬと直径Ｄ
の比Ｌ：Ｄが１：１〜５：１であるのが好まし
い。 As mentioned above, in order to maintain uniform digestibility of the lime-milk slurry, quicklime and water must be mixed together in the digestion vessel 10.
It is necessary to stay there for a suitable time and stir it appropriately. For this purpose, the length L and diameter D of the digestion vessel 10 are
Preferably, the ratio L:D is from 1:1 to 5:1.
なお、流出側端面２４に付設されたガイドパイ
プ２８は、流出用開口２６から排出された石灰乳
スラリーや粒状物を消化容器１０の外部へ流出し
易くする。 Note that the guide pipe 28 attached to the outflow side end face 24 facilitates the flow of the lime milk slurry and granular materials discharged from the outflow opening 26 to the outside of the digestion vessel 10.
このように構成された本考案の実施例装置にお
いては、石灰乳スラリーが２６からオーバーフロ
ーしてスムースに排出され、かつ板状体５０と錐
状体５２とにより消化容器内に沈殿した粒状物を
もかき上げられて流出用開口２６から排出され
る。そのため所定濃度で消化度が均一のかつ不純
物の少ない石灰乳スラリーが確実に得られる。 In the apparatus according to the embodiment of the present invention configured as described above, the lime milk slurry overflows from 26 and is smoothly discharged, and the plate-shaped body 50 and the cone-shaped body 52 remove the granules that have settled in the digestion vessel. It is also scraped up and discharged from the outflow opening 26. Therefore, milk-of-lime slurry with a predetermined concentration, uniform digestibility, and few impurities can be reliably obtained.
なお上記実施例は本考案の一例であり、本考案
は図示以外の態様においても実施し得ることは明
らかである。 It should be noted that the above-mentioned embodiment is an example of the present invention, and it is clear that the present invention can be implemented in forms other than those shown in the drawings.
例えば、
板状体５０の設置数は１，２又は４以上の個
数であつても良い。 For example, the number of plate-shaped bodies 50 installed may be 1, 2, or 4 or more.
板状体５０は端面板２４に垂直で無くとも良
く若干傾斜していても良い。 The plate-like body 50 does not have to be perpendicular to the end plate 24 and may be slightly inclined.
板状体５０は平板状で無くとも良く、幅方向
の断面形状が波形となる波板でも良い。 The plate-like body 50 does not need to be flat, and may be a corrugated plate having a corrugated cross-sectional shape in the width direction.
錐状体５２の先端を流出用開口２６から突出
させるかわりに、錐状体５２の先端に小棒状体
を設け、この小棒状体を流出用開口２６から突
出させるようにしても良い。 Instead of having the tip of the cone-shaped body 52 protrude from the outflow opening 26, a small rod-like body may be provided at the tip of the cone-shaped body 52, and this small rod-shaped body may be made to protrude from the outflow opening 26.
次に実験例について説明する。 Next, an experimental example will be explained.
第２図に示す構成の消化容器１０を第１図に示
す如く組み込んだ生石灰の消化装置を製作した。
消化容器１０の各部分の寸法を第８図に示す（単
位mm）。なおその他の諸元と実験条件を次に示す。 A quicklime digestion apparatus was manufactured in which the digestion vessel 10 having the structure shown in FIG. 2 was incorporated as shown in FIG.
The dimensions of each part of the digestion vessel 10 are shown in FIG. 8 (unit: mm). Other specifications and experimental conditions are shown below.
供給用開口２２の面積 29cm2
流出用開口２６の面積 38.5cm2
撹拌翼５４の傾斜θ 45度
〃 設置個数 ２個
〃 設置間隔 約６cm
実験条件
生石灰粒径 ５〜20mm
〃 供給速度 ６Kg／hr
水供給速度 34.2／hr
篩４２の目開き 100ミクロン
消化容器１０の周速 20cm／sec
その結果、得られた石灰乳スラリーの濃度は常
時16.0〜16.8％と一定になり、純度も98.0％〜
98.5％と高純度で経時変化も認められなかつた。
また消化容器１０内に滞留する石灰乳スラリー量
が常時19.3と安定し、石灰乳スラリー中の粒状
物の残渣量も５％と経時的に安定した値を示し
た。この時の石灰乳スラリー温度は55℃でありマ
ツドボールの発生や消化熱による突沸などのトラ
ブルは認められなかつた。 Area of supply opening 22 29cm 2 Area of outflow opening 26 38.5cm 2 Inclination θ of stirring blade 54 45 degrees 〃 Number of installations 2 〃 Installation interval approximately 6cm Experimental conditions Quicklime particle size 5-20mm 〃 Supply rate 6Kg/hr Water Feed rate: 34.2/hr Opening of sieve 42: 100 microns Peripheral speed of digestion vessel 10: 20 cm/sec As a result, the concentration of the obtained milk-of-lime slurry is always constant at 16.0-16.8%, and the purity is also 98.0%-
It had a high purity of 98.5% and no change over time was observed.
In addition, the amount of milk-of-lime slurry remaining in the digestion vessel 10 was always stable at 19.3, and the amount of residual particulate matter in the milk-of-lime slurry also remained stable over time at 5%. The temperature of the lime milk slurry at this time was 55°C, and no problems such as the formation of mud balls or bumping due to digestion heat were observed.
以上詳述した通り、本考案の生石灰の消化装置
は、消化容器内に沈殿する粒状物が板状体及び錐
状体によつて容器外に連続的に排出される。そし
て消化容器内においては生石灰と水とが常に所定
の割合でかつ生石灰が過度に細かくなることなく
十分な時間滞留し反応する。そのため得られる石
灰乳スラリーの消化度や濃度が均一で、純度も高
い。また消化容器からの放熱も適度なものとな
り、突沸などのトラブルもない。
As described in detail above, in the quicklime digestion apparatus of the present invention, particulate matter precipitated in the digestion vessel is continuously discharged to the outside of the vessel by the plates and cones. In the digestion vessel, quicklime and water always remain in a predetermined ratio for a sufficient period of time to react without the quicklime becoming too fine. Therefore, the digestibility and concentration of the obtained milk-of-lime slurry are uniform, and the purity is also high. In addition, the heat dissipation from the digestion vessel is moderate, and there are no problems such as bumping.
また装置構成が簡便で、駆動部分も少ないので
稼動時の保守管理が容易であり、優れた品質の石
灰乳スラリーを連続して製造でき製造コストも廉
価である。 In addition, the device has a simple configuration and has few moving parts, so maintenance during operation is easy, and milky lime slurry of excellent quality can be continuously produced at a low manufacturing cost.
第１図は本考案の実施例装置の系統図、第２図
は消化容器１０の斜視図、第３図は消化容器１０
の左側面図、第４図は消化容器１０の右側面図、
第５図は第２図−線に沿う断面図、第６図は
板状体５０、錐状体５２及び端面板２４の係合状
態を示す説明図、第７図は第２図−線に沿う
断面図、第８図は実験例に用いた消化容器の寸法
を示す斜視図である。
１０……消化容器、１６，１８……回転用ロー
ラ、２０，２４……端面板、２６……流出用開
口、２８……ガイドパイプ、３０……生石灰、３
６……水、４２……篩、４６……粒状物、５０…
…板状体、５２……錐状体、５４……撹拌翼。
FIG. 1 is a system diagram of an embodiment of the device of the present invention, FIG. 2 is a perspective view of the digestion vessel 10, and FIG. 3 is a diagram of the digestion vessel 10.
4 is a right side view of the digestion vessel 10,
FIG. 5 is a sectional view taken along the line in FIG. 2, FIG. 6 is an explanatory diagram showing the engagement state of the plate-shaped body 50, the cone-shaped body 52, and the end plate 24, and FIG. 7 is a sectional view taken along the line in FIG. 2. FIG. 8 is a perspective view showing the dimensions of the digestion vessel used in the experimental example. 10... Digestion vessel, 16, 18... Rotating roller, 20, 24... End plate, 26... Outflow opening, 28... Guide pipe, 30... Quicklime, 3
6...water, 42...sieve, 46...granular material, 50...
...Plate-shaped body, 52... Cone-shaped body, 54... Stirring blade.
Claims (1)
生石灰及び水の導入用開口を有し、他方の端面
板中心部には石灰乳スラリー流出用開口を有
し、軸方向が略水平となるように、かつ軸回り
に回転可能に支承された消化容器を備えた生石
灰の消化装置において、 前記他方の端面板の内側部分に板状体を放射
状に設けると共に、これらの板状体の放射中心
部分に、前記流出用開口出口方向に向つて細く
なる形状の錐状体を設けたことを特徴とする生
石灰の消化装置。 (2) 前記他方の端面板の開口外側部に該開口から
離れるに従い拡径する形状のパイプを付設した
ことを特徴とする実用新案登録請求の範囲第１
項に記載の生石灰の消化装置。 (3) 前記錐状体の先端部分を流出用開口から突出
させたことを特徴とする実用新案登録請求の範
囲第１項又は第２項に記載の生石灰の消化装
置。 (4) 前記複数の板状体は等角度に配設され、消化
容器の端面板に対してほぼ垂直に設置されると
共に、その放射方向先端部は消化容器内周壁面
に接合されており、かつ板状体の幅は消化容器
の軸方向の長さの1/10を超えない大きさである
ことを特徴とする実用新案登録請求の範囲第１
項ないし第３項のいずれか１項に記載の生石灰
の消化装置。 (5) 前記消化容器の内周壁面に撹拌翼を設けたこ
とを特徴とする実用新案登録請求の範囲第１項
ないし第４項のいずれか１項に記載の生石灰の
消化装置。 (6) 撹拌翼を複数個等間隔に設置し、かつ撹拌翼
に孔を設けたことを特徴とする実用新案登録請
求の範囲第５項に記載の生石灰の消化装置。 (7) 前記消化容器の軸方向と垂直な断面におい
て、撹拌翼を消化容器周囲の法線から30〜45度
傾斜させたことを特徴とする実用新案登録請求
の範囲第５項又は第６項に記載の生石灰の消化
装置。 (8) 消化容器の軸方向長さＬと直径Ｄとの比Ｌ：
Ｄが１：１〜５：１であり、前記流出用開口の
開口面積が消化容器端面板の面積の1.7〜4.0％
であることを特徴とする実用新案登録請求の範
囲第１項ないし第７項のいずれか１項に記載の
生石灰の消化装置。[Scope of Claim for Utility Model Registration] (1) It has a double-enclosed cylindrical shape, with an opening in the center of one end plate for introduction of quicklime and water, and an opening in the center of the other end plate for outflow of lime milk slurry. In a quicklime extinguisher equipped with a extinguisher having an opening and rotatably supported around the axis so that the axial direction is approximately horizontal, plate-like bodies are radially disposed on the inner side of the other end plate. A quicklime digester characterized in that a cone-shaped body is provided in the radial center portion of these plate-like bodies and has a shape that becomes narrower toward the outlet of the outflow opening. (2) Utility model registration claim 1, characterized in that a pipe whose diameter increases as it moves away from the opening is attached to the outer side of the opening of the other end plate.
Quicklime digester as described in Section. (3) The quicklime digester according to claim 1 or 2, wherein the tip of the cone protrudes from the outflow opening. (4) The plurality of plate-like bodies are arranged at equal angles and are installed substantially perpendicularly to the end plate of the digestion vessel, and their radial tips are joined to the inner circumferential wall surface of the digestion vessel, and the width of the plate-like body is a size not exceeding 1/10 of the length in the axial direction of the digestion vessel.
The quicklime digestion device according to any one of Items 1 to 3. (5) The quicklime digester according to any one of claims 1 to 4, which is characterized in that stirring blades are provided on the inner circumferential wall of the digestion vessel. (6) The quicklime digestion device according to claim 5 of the utility model registration, characterized in that a plurality of stirring blades are installed at equal intervals and holes are provided in the stirring blades. (7) Utility model registration claim 5 or 6, characterized in that, in a cross section perpendicular to the axial direction of the digestion vessel, the stirring blades are inclined by 30 to 45 degrees from the normal line around the digestion vessel. A quicklime digester as described in . (8) Ratio L between axial length L and diameter D of the digestion vessel:
D is 1:1 to 5:1, and the opening area of the outflow opening is 1.7 to 4.0% of the area of the end plate of the digestion vessel.
A quicklime digestion device according to any one of claims 1 to 7 of the utility model registration claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8924584U JPS617540U (en) | 1984-06-15 | 1984-06-15 | quicklime digester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8924584U JPS617540U (en) | 1984-06-15 | 1984-06-15 | quicklime digester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS617540U JPS617540U (en) | 1986-01-17 |
| JPH0129222Y2 true JPH0129222Y2 (en) | 1989-09-06 |
Family
ID=30643133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8924584U Granted JPS617540U (en) | 1984-06-15 | 1984-06-15 | quicklime digester |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS617540U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008285352A (en) * | 2007-05-16 | 2008-11-27 | Nikko Co Ltd | Method and apparatus for preparing slaked lime slurry |
-
1984
- 1984-06-15 JP JP8924584U patent/JPS617540U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008285352A (en) * | 2007-05-16 | 2008-11-27 | Nikko Co Ltd | Method and apparatus for preparing slaked lime slurry |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS617540U (en) | 1986-01-17 |
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