JP3014228B2 - Drip nozzle for countercurrent granulation equipment - Google Patents
Drip nozzle for countercurrent granulation equipmentInfo
- Publication number
- JP3014228B2 JP3014228B2 JP4312889A JP31288992A JP3014228B2 JP 3014228 B2 JP3014228 B2 JP 3014228B2 JP 4312889 A JP4312889 A JP 4312889A JP 31288992 A JP31288992 A JP 31288992A JP 3014228 B2 JP3014228 B2 JP 3014228B2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- dropping
- sleeve
- granulation tower
- granulation
- 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 - Lifetime
Links
Landscapes
- Glanulating (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、各種化成品、固体肥料
などのような粒状物を、高温の溶融液から生成する向流
式造粒設備のための滴下ノズルに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drip nozzle for a countercurrent granulator for producing granules such as various chemical products and solid fertilizers from a high-temperature melt.
【０００２】[0002]
【従来の技術】各種化成品、固体肥料などは、その合成
過程は高温の溶融液の状態で処理されるが、その保存、
輸送、並びに使用に際しては、流動性に富む固体粒子の
形をとることが便利であり、実際にこれらの合成プラン
トに於ける最終工程に於ては、そのための冷却造粒設備
が設けられることが一般的である。2. Description of the Related Art Various synthetic products, solid fertilizers, etc. are processed in the form of a high-temperature molten liquid during the synthesis process.
For transportation and use, it is convenient to take the form of solid particles with high fluidity.In the final step of these synthesis plants, cooling granulation equipment may be provided for this purpose. General.
【０００３】この冷却造粒設備は、所謂、如雨露のよう
な多孔板を有するシャワーノズルを造粒塔の上部に配置
し、これから高温の液滴をシャワー状に滴下させると共
に、低温の空気もしくは不活性ガスなどの冷却ガスを造
粒塔内に於て下から上へと流し、この冷却ガスに液滴を
接触させることによって常温の固体粒子を得て、これを
塔外へ排出するという造粒プロセスを実行し得るように
なっている。[0003] In this cooling granulation equipment, a shower nozzle having a perforated plate such as so-called rainfall is arranged at the upper part of a granulation tower. Cooling gas such as active gas is flowed from the bottom up in the granulation tower, and droplets are brought into contact with this cooling gas to obtain solid particles at room temperature, which are discharged outside the tower. The process can be executed.
【０００４】このような向流式造粒設備に於ては、滴下
ノズル内の溶融原液を固化させないようにする必要があ
るが、その処理能力が比較的小さい場合、あるいは原液
の凝固温度が相対的に低い場合には、滴下ノズルの側壁
に設けたスチームジャケットによる加熱だけで十分に溶
融状態を保つことができる。[0004] In such a countercurrent granulation apparatus, it is necessary to prevent the molten stock solution in the dropping nozzle from solidifying. However, when the processing capacity is relatively small, or the solidification temperature of the stock solution is relatively low. When the temperature is extremely low, the molten state can be sufficiently maintained only by heating with the steam jacket provided on the side wall of the dripping nozzle.
【０００５】[0005]
【発明が解決しようとする課題】他方、設備の製作面、
あるいは維持管理面から見ると、滴下ノズルの数量はで
きるだけ少ない方が好ましい。ところが、大きな処理容
量の設備に於て、少数の滴下ノズルで処理しようとする
と、滴下孔の数量を確保する都合上、１つの滴下ノズル
の造粒塔内に対向する面の表面積を相応に大きくせねば
ならないため、滴下ノズルの表面から冷却ガスにて奪わ
れる熱量が大きくなり、滴下ノズルの側壁からの加熱だ
けではノズル内部の原液の溶融状態を維持することが困
難となる。いきおい、小容量の滴下ノズルを多数配置す
るような構成を採らざるを得ず、設備の製作、運転、維
持管理を行う上に不便になることを余儀なくされてい
た。On the other hand, on the manufacturing side of the equipment,
Or, from the viewpoint of maintenance, it is preferable that the number of dropping nozzles is as small as possible. However, in a facility with a large processing capacity, when processing is performed with a small number of dropping nozzles, the surface area of the surface facing the inside of the granulation tower of one dropping nozzle is correspondingly large in order to secure the number of dropping holes. Since it must be performed, the amount of heat taken by the cooling gas from the surface of the dropping nozzle increases, and it is difficult to maintain the molten state of the stock solution inside the nozzle only by heating from the side wall of the dropping nozzle. Fortunately, it was necessary to adopt a configuration in which a large number of small-capacity drip nozzles were arranged, and this was inevitably inconvenient in manufacturing, operating, and maintaining the equipment.
【０００６】本発明は、このような従来技術の不都合を
解消すべく案出されたものであり、その主な目的は、比
較的容量を大きくし、かつ冷却ガスによるノズル表面の
過冷却を回避し得るように改良された滴下ノズルを提供
することにある。また本発明の第２の目的は、保守整備
性に優れた滴下ノズルを提供することにある。The present invention has been devised to solve such disadvantages of the prior art, and its main objects are to make the capacity relatively large and to avoid overcooling of the nozzle surface by cooling gas. It is an object of the present invention to provide an improved drip nozzle. A second object of the present invention is to provide a drip nozzle excellent in maintainability.
【０００７】[0007]
【課題を解決するための手段】このような目的は、本発
明によれば、高温の溶融液を滴下して造粒塔内を流過す
る冷却ガスに接触させることによって粒状物を生成する
向流式造粒設備のための滴下ノズルの構成を、熱媒が流
通する空隙を備えた二重構造をなし且つ前記造粒塔の天
井内面に開口したスリーブを前記造粒塔の天井に外向突
設し、前記スリーブの上端に当該滴下ノズルが支持され
るようにしてなるものとすることによって達成される。
特に、当該滴下ノズルを複数個設けると共に、前記スリ
ーブのノズル取付面を遮断可能なスライド式ゲートバル
ブを各滴下ノズルの下面と対向する位置に設けたものと
すると良い。SUMMARY OF THE INVENTION According to the present invention, there is provided a method for producing granules by dropping a high-temperature melt and contacting the same with a cooling gas flowing through a granulation tower. The configuration of the dropping nozzle for the flow-type granulation equipment is such that a sleeve having a double structure having a space through which a heat medium flows and having an opening on the inner surface of the ceiling of the granulation tower projects outward from the ceiling of the granulation tower. This is achieved by providing the drip nozzle on the upper end of the sleeve.
In particular, it is preferable that a plurality of the dripping nozzles are provided , and a slide gate valve capable of blocking the nozzle mounting surface of the sleeve is provided at a position facing the lower surface of each dripping nozzle.
【０００８】[0008]
【作用】請求項１の構成によれば、滴下ノズルの表面が
造粒塔の天井内面から没入するので、滴下ノズルの表面
が冷却ガスに直接曝され難くなるため、滴下ノズル表面
の過冷却が抑制される。また請求項２の構成によれば、
スライド式ゲートバルブによってスリーブと滴下ノズル
との間を縁切りできるので、造粒設備の運転を中断せず
に個別に滴下ノズルのメインテナンスを実施することが
できる。[Action] lever by the arrangement of claim 1, the surface of the drip nozzle
Since it is immersed from the inner surface of the ceiling of the granulation tower, the surface of the dripping nozzle is less likely to be directly exposed to the cooling gas, so that the supercooling of the dripping nozzle surface is suppressed. According to the configuration of claim 2,
Since the sleeve and the dropping nozzle can be cut off by the sliding gate valve, the maintenance of the dropping nozzle can be performed individually without interrupting the operation of the granulating equipment.
【０００９】[0009]
【実施例】以下に添付の図面に示された具体的な実施例
に基づいて本発明の構成を詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described below in detail with reference to specific embodiments shown in the accompanying drawings.
【００１０】図１は、本発明が適用された造粒塔の概略
図である。この造粒塔１は、上下各端がそれぞれ絞られ
た円筒状をなし、最下端部に製品取り出し口２が設けら
れ、かつその直上部側方に冷却ガスの供給口３が突設さ
れている。FIG. 1 is a schematic view of a granulation tower to which the present invention is applied. The granulation tower 1 has a cylindrical shape in which the upper and lower ends are respectively squeezed, a product take-out port 2 is provided at the lowermost end, and a cooling gas supply port 3 is protrudingly provided immediately above the side. I have.
【００１１】造粒塔１の天井４は、比較的緩い傾斜で上
すぼまりになった円錐台形輪郭をなしており、その中心
部に冷却ガスの排出口５が設けられている。そしてこの
排出口５の周囲を囲む共通の円周上に、複数の滴下ノズ
ル６が等間隔をおいて配設されている。また、冷却ガス
の排出口５には、造粒塔１内に適宜な寸法で突入する排
気内筒７が造粒塔１の軸線方向に延設されている。The ceiling 4 of the granulation tower 1 has a truncated conical shape with a relatively gentle slope and an upwardly tapering shape, and a cooling gas outlet 5 is provided at the center thereof. A plurality of dripping nozzles 6 are arranged at equal intervals on a common circumference surrounding the outlet 5. Further, an exhaust inner cylinder 7 that protrudes into the granulation tower 1 with appropriate dimensions is provided at the cooling gas discharge port 5 in the axial direction of the granulation tower 1.
【００１２】図２に良く示されているように、滴下ノズ
ル６は、その軸線が造粒塔１の軸線と平行に延在する円
筒形のスリーブ８を介して造粒塔１の天井４に取付けら
れている。この滴下ノズル６は、適宜な直径の孔を多数
穿設してなる多孔板９でその底面が塞がれた二重構造の
円錐形をなすシェル１０を有しており、その頂点に接続
された供給パイプ１１の内側から、加熱溶融した原液が
滴下ノズル６内に供給されるようになっている。As best shown in FIG. 2, the dropping nozzle 6 is attached to the ceiling 4 of the granulation tower 1 via a cylindrical sleeve 8 whose axis extends parallel to the axis of the granulation tower 1. Installed. The drip nozzle 6 has a double-walled conical shell 10 whose bottom surface is closed by a perforated plate 9 having a large number of holes with appropriate diameters. An undiluted solution heated and melted is supplied into the dropping nozzle 6 from the inside of the supply pipe 11.
【００１３】二重構造のシェル１０の空隙１２には、ス
チームなどの熱媒が吹き込まれ、滴下ノズル６内の原液
の溶融温度が維持されるようになっている。A heat medium such as steam is blown into the gap 12 of the double-structured shell 10 so that the melting temperature of the stock solution in the drip nozzle 6 is maintained.
【００１４】また、滴下ノズル６を支持するスリーブ８
は、滴下ノズル６のシェル１０と同様に二重構造になっ
ており、その空隙１３に熱媒が吹き込まれて加熱される
ようになっている。A sleeve 8 for supporting the drip nozzle 6
Has a double structure like the shell 10 of the dripping nozzle 6, and a heating medium is blown into the gap 13 to be heated.
【００１５】滴下ノズル６とスリーブ８との間には、ス
リーブ８の軸線に直交する向きにスライド可能なゲート
バルブ１４が設けられている。そして滴下ノズル６は、
スリーブ８と同様の熱媒導入構造の二重円筒形をなす支
持体１５を介してゲートバルブ１４のバルブボディ１６
上に載置されている。これら支持体１５のフランジ１
７、ゲートバルブ１４のバルブボディ１６、及びスリー
ブ８上端のフランジ１８が、共締めにて相互に固定され
ている。A gate valve 14 slidable in a direction perpendicular to the axis of the sleeve 8 is provided between the drip nozzle 6 and the sleeve 8. And the dripping nozzle 6
A valve body 16 of the gate valve 14 is provided via a double cylindrical support 15 having a heat medium introduction structure similar to that of the sleeve 8.
Is placed on top. The flange 1 of these supports 15
7. The valve body 16 of the gate valve 14 and the flange 18 at the upper end of the sleeve 8 are fixed to each other by fastening together.
【００１６】供給パイプ１１から滴下ノズル６内に流入
した高温の原液は、多孔板９の各孔から造粒塔１内に滴
下される。この滴下された液滴は、造粒塔１内を落下し
つつ下側から吹き込まれる冷却ガスに接触して冷却さ
れ、造粒塔１下端の製品取り出し口２に達するまでに固
化して概ね球状の粒状体になる。The high-temperature stock solution flowing into the dropping nozzle 6 from the supply pipe 11 is dropped into the granulation tower 1 from each hole of the perforated plate 9. The dropped droplets are cooled by contacting the cooling gas blown from below while falling in the granulation tower 1, and solidified until reaching the product outlet 2 at the lower end of the granulation tower 1, and become substantially spherical. Of granular material.
【００１７】さて、処理容量を増大しようとすると、多
孔板９に設ける滴下孔の数量を相応に増大せねばならな
い。そのためには、１つの滴下ノズル６の造粒塔１内に
対向する面、即ち多孔板９の表面積を大きくせねばなら
ない。すると、多孔板９の表面から冷却ガスにて奪われ
る熱量が大きくなり、滴下ノズル６の側壁からの熱媒に
よる加熱だけでは滴下ノズル６内の原液の溶融状態を維
持することが困難となる。そこで本発明に於ては、造粒
塔１の天井に対する滴下ノズル６の取付部にスチームジ
ャケットを有するスリーブ８を介在させることにより、
造粒塔１の天井４内面から更に上方に多孔板９の表面を
位置させるようにしている。これにより、多孔板９の表
面が冷却ガスに直接的に接触し難くなり、支持体１５及
びスリーブ８が熱媒にて加熱されることと相俟って、多
孔板９の表面の過冷却が抑制される。In order to increase the processing capacity, the number of drip holes provided in the perforated plate 9 must be increased accordingly. For this purpose, the surface of one dropping nozzle 6 facing the inside of the granulation tower 1, that is, the surface area of the perforated plate 9 must be increased. Then, the amount of heat taken by the cooling gas from the surface of the perforated plate 9 increases, and it becomes difficult to maintain the molten state of the stock solution in the dropping nozzle 6 only by heating with the heat medium from the side wall of the dropping nozzle 6. Therefore, in the present invention, a sleeve 8 having a steam jacket is interposed at a mounting portion of the dripping nozzle 6 with respect to the ceiling of the granulation tower 1,
The surface of the perforated plate 9 is positioned further above the inner surface of the ceiling 4 of the granulation tower 1. This makes it difficult for the surface of the perforated plate 9 to directly contact the cooling gas, and the support 15 and the sleeve 8 are heated by the heat medium, so that the supercooling of the surface of the perforated plate 9 is prevented. Is suppressed.
【００１８】他方、ゲートバルブ１４は、手動、あるい
は図示されていない駆動アクチュエータによって開閉駆
動されるようになっている。そして通常操業時はこのゲ
ートバルブ１４を開放することによって滴下ノズル６か
らの液滴の造粒塔１内への落下を許容し、必要に応じて
このゲートバルブ１４を閉じることによって当該滴下ノ
ズル６を造粒塔１から完全に縁切りすることができる。
従って、複数の滴下ノズルのうちの所望の滴下ノズル６
の点検・交換を個別に実施する際に、点検・交換を行わ
ない滴下ノズル６からの滴下を停止する必要がない。On the other hand, the gate valve 14 is driven to be opened and closed manually or by a drive actuator (not shown). During normal operation, the gate valve 14 is opened to allow the droplets from the dropping nozzle 6 to fall into the granulation tower 1, and the gate valve 14 is closed as necessary to close the dropping nozzle 6. Can be completely cut off from the granulation tower 1.
Therefore, a desired dripping nozzle 6 of the plurality of dripping nozzles
When performing inspections and replacements individually, perform inspections and replacements.
There is no need to stop dripping from the drip nozzle 6 .
【００１９】[0019]
【発明の効果】このように本発明によれば、滴下ノズル
の表面が冷却ガスに直接曝され難くなるので、滴下ノズ
ルの表面の過冷却が抑制される。しかもスライド式ゲー
トバルブによって造粒塔と滴下ノズルとの間を縁切りし
得るので、造粒設備の運転を中断せずに個別に滴下ノズ
ルのメインテナンスを実施することができる。従って、
滴下ノズルの１つ当たりの容量を大きくとり、かつ保守
整備性を向上することが可能となる。As described above, according to the present invention, the surface of the dropping nozzle is less likely to be directly exposed to the cooling gas, so that the supercooling of the surface of the dropping nozzle is suppressed. In addition, since the sliding gate valve can cut off between the granulation tower and the dropping nozzle, the maintenance of the dropping nozzle can be performed individually without interrupting the operation of the granulation equipment. Therefore,
It is possible to increase the capacity per one drip nozzle and improve maintainability.
【図１】本発明が適用された造粒塔の概略全体図。FIG. 1 is a schematic overall view of a granulation tower to which the present invention is applied.
【図２】滴下ノズル部分の拡大断面図。FIG. 2 is an enlarged sectional view of a dripping nozzle portion.
１ 造粒塔 ２ 製品取り出し口 ３ 冷却ガスの供給口 ４ 天井 ５ 冷却ガスの排出口 ６ 滴下ノズル ７ 軸線方向伸延部 ８ スリーブ ９ 多孔板 １０ シェル １１ 供給パイプ １２・１３ 空隙 １４ ゲートバルブ １５ 支持体 １６ バルブボディ １７・１８ フランジ DESCRIPTION OF SYMBOLS 1 Granulation tower 2 Product take-out port 3 Cooling gas supply port 4 Ceiling 5 Cooling gas discharge port 6 Drip nozzle 7 Axial extension part 8 Sleeve 9 Perforated plate 10 Shell 11 Supply pipe 12/13 Void 14 Gate valve 15 Support 16 Valve body 17 ・ 18 Flange
───────────────────────────────────────────────────── フロントページの続き (72)発明者 田中 恒光 神奈川県横浜市鶴見区鶴見中央２丁目12 番１号 千代田化工建設株式会社内 (72)発明者 鈴木 正二 東京都江東区南砂７丁目12番４号 アシ ザワ・スプレープラント株式会社内 (56)参考文献 特開 平３−191005（ＪＰ，Ａ) 特開 昭54−81175（ＪＰ，Ａ) 特開 平６−134277（ＪＰ，Ａ) 特開 平６−134278（ＪＰ，Ａ) 特開 平６−134279（ＪＰ，Ａ) 実開 昭57−17730（ＪＰ，Ｕ) 特公 昭28−4763（ＪＰ，Ｂ１) (58)調査した分野(Int.Cl.7，ＤＢ名) B01J 2/02 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tsunemitsu Tanaka 2-12-1, Tsurumichuo, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture Inside Chiyoda Kako Construction Co., Ltd. (72) Inventor Shoji Suzuki 7-12 Minamisuna, Koto-ku, Tokyo No. 4 Inside Ashizawa Spray Plant Co., Ltd. (56) References JP-A-3-191005 (JP, A) JP-A-54-81175 (JP, A) JP-A-6-134277 (JP, A) JP-A-6-134278 (JP, A) JP-A-6-134279 (JP, A) JP-A-57-17730 (JP, U) JP-B-28-4773 (JP, B1) (58) Fields investigated (Int) .Cl. 7 , DB name) B01J 2/02
Claims (2)
する冷却ガスに接触させることによって粒状物を生成す
る向流式造粒設備のための滴下ノズルであって、熱媒が流通する空隙を備えた二重構造をなし且つ前記造
粒塔の天井内面に開口したスリーブを前記 造粒塔の天井
に外向突設し、 前記スリーブの上端に当該滴下ノズルが支持されるよう
にしてなるものとした ことを特徴とする向流式造粒設備
のための滴下ノズル。1. A dropping nozzle for counter-current granulating facility that generates particulates by dropwise hot melt into contact with the cooling gas flowing through the prilling tower, a heating medium Has a double structure with voids through which
A sleeve opened on the inner surface of the ceiling of the granulation tower projects outward from the ceiling of the granulation tower, and the drip nozzle is supported at the upper end of the sleeve.
Dropping nozzle for counter-current granulating facility which is characterized in by that was made in the.
前記スリーブのノズル取付面を遮断可能なスライド式ゲ
ートバルブを各滴下ノズルの下面と対向する位置に設け
るものとしたことを特徴とする請求項１に記載の向流式
造粒設備のための滴下ノズル With wherein providing a plurality of the dropping nozzles,
2. A dripping device for a counter-flow granulation apparatus according to claim 1, wherein a slide gate valve capable of shutting off a nozzle mounting surface of the sleeve is provided at a position facing the lower surface of each dripping nozzle. nozzle
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4312889A JP3014228B2 (en) | 1992-10-27 | 1992-10-27 | Drip nozzle for countercurrent granulation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4312889A JP3014228B2 (en) | 1992-10-27 | 1992-10-27 | Drip nozzle for countercurrent granulation equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06134276A JPH06134276A (en) | 1994-05-17 |
| JP3014228B2 true JP3014228B2 (en) | 2000-02-28 |
Family
ID=18034669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4312889A Expired - Lifetime JP3014228B2 (en) | 1992-10-27 | 1992-10-27 | Drip nozzle for countercurrent granulation equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3014228B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19904407C2 (en) * | 1999-02-04 | 2001-09-20 | Bayer Ag | Device for changing a nozzle plate of a prilling tower and method for automated changing |
| JP4706181B2 (en) * | 2004-04-13 | 2011-06-22 | 株式会社カネカ | Droplet production equipment |
-
1992
- 1992-10-27 JP JP4312889A patent/JP3014228B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06134276A (en) | 1994-05-17 |
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