JPS63111902A - Centrifugal film evaporator - Google Patents
Centrifugal film evaporatorInfo
- Publication number
- JPS63111902A JPS63111902A JP25559386A JP25559386A JPS63111902A JP S63111902 A JPS63111902 A JP S63111902A JP 25559386 A JP25559386 A JP 25559386A JP 25559386 A JP25559386 A JP 25559386A JP S63111902 A JPS63111902 A JP S63111902A
- Authority
- JP
- Japan
- Prior art keywords
- transfer surface
- evaporator
- blade
- heat
- heat transfer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/22—Evaporating by bringing a thin layer of the liquid into contact with a heated surface
- B01D1/222—In rotating vessels; vessels with movable parts
- B01D1/223—In rotating vessels; vessels with movable parts containing a rotor
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、高粘度物質などを蒸発濃縮できるはかりでな
く、ａ縮により結晶が析出し、スラリー化、さらには固
形化する物質の処理ができる遠心式薄膜蒸発装置に関す
るものである。Detailed Description of the Invention (Field of Industrial Application) The present invention is not only a scale that can evaporate and concentrate highly viscous substances, but also a scale that can process substances that precipitate crystals due to a-condensation, become slurry, and even solidify. This article relates to a centrifugal thin film evaporator that can be used.
（従来の技術）
熱゛敏感物質や高粘度物質などの蒸発濃縮装置として、
処理液を蒸発缶内で回転するローターまたはシャフトに
固定された攪拌翼により、蒸発缶伝熱面に薄膜状に塗布
する遠心式薄膜蒸発装置が公知である。また、蒸発濃縮
が進み°粉末固形化まで対応できる装置として、攪拌翼
が司動ジヨイントを介してローターに接続され、少し左
右に振子状に動く形式とか、粉末固形化までのプロセス
を濃縮帯域と粉末乾燥帯域の２段に分け、各々別個の蒸
発機で連続的に処理する方式等が知られている。(Prior technology) As an evaporation concentration device for heat sensitive substances and high viscosity substances,
A centrifugal thin film evaporator is known in which a treatment liquid is applied in a thin film onto the heat transfer surface of an evaporator using a rotor rotating within the evaporator or a stirring blade fixed to a shaft. In addition, as a device that can handle evaporation and concentration up to powder solidification, we have developed a system in which the stirring blade is connected to the rotor via a driving joint and moves slightly from side to side in a pendulum-like manner, and in which the process up to powder solidification is carried out in the concentration zone. A method is known in which the powder drying zone is divided into two stages and each stage is continuously processed using a separate evaporator.
、（発明が解決しようとする問題点）
しかしながら、処理する液体が＃縮に伴ない結晶を析出
し、スラリー状態を経て固形化する場合、上記装置にお
いても、応々にして、スラリーから固形化の段階で、’
Ｊｔ拌萬上に固形物が付着し、これが成長し、攪拌翼が
その機能を果たさなくなるばかりでなく、ローターの回
転を停めてしまう事態や、蒸発缶の伝熱面に固形物がス
ケーリングし、伝熱係数の低下を引き起こ す事態が発
生する。(Problems to be Solved by the Invention) However, when the liquid to be treated precipitates crystals as it shrinks and solidifies through a slurry state, the above apparatus may also be able to solidify the slurry. At the stage of '
Solids adhere to and grow on the Jt stirrer, which not only causes the stirring blades to no longer perform their functions, but also causes the rotor to stop rotating, and solids to scale on the heat transfer surface of the evaporator. A situation occurs that causes a decrease in the heat transfer coefficient.
このように従来の遠心式薄膜蒸発機の攪拌翼でＦｉ、粉
末固形化段階でのスケーリングに十分対応しきれないの
が実情である。As described above, the actual situation is that the stirring blades of conventional centrifugal thin film evaporators cannot sufficiently cope with Fi and scaling at the powder solidification stage.
（問題点を解決する友めの手段および作用）本発明者ら
は、上記実情に鑑み鋭意検討の結果、攪拌翼すなわちブ
レードをローターの回転に伴ない回転するような構造に
すれば、ブレードならびに蒸発缶のスケーリングが防止
できることを発見し、本発明に至った。すなわち、本発
明は、円筒状あるいは円錐状の伝熱面を有する蒸発缶内
で回転するローターに取り付けられたブレードが処理液
を伝熱面に均一に薄膜状に押し拡げ、攪拌する遠心式４
膜蒸発装置において、該ブレード全体またはその一部が
、伝熱面の長さ方向と平行な軸を中心として回転するス
クリュー、または円柱に複数の板状突起物が付いた回転
体であることｔ−特徴とする遠心式薄膜蒸発装置である
。(Friendly means and effects for solving the problem) In view of the above-mentioned circumstances, the inventors of the present invention have conducted extensive studies, and have found that if the stirring blades, that is, the blades, are constructed to rotate with the rotation of the rotor, the blades and It was discovered that scaling of the evaporator can be prevented, leading to the present invention. That is, the present invention is a centrifugal type 4 evaporator in which a blade attached to a rotor rotating in an evaporator having a cylindrical or conical heat transfer surface spreads the processing liquid uniformly into a thin film on the heat transfer surface and stirs it.
In the film evaporator, the entire blade or a part thereof is a screw that rotates around an axis parallel to the length direction of the heat transfer surface, or a rotating body with a plurality of plate-like protrusions attached to a cylinder. - It is a centrifugal thin film evaporator with special features.
本発明においては１円筒状あるいは円錐状の伝熱面を有
する蒸発缶内で回転するローターに取り付けられたブレ
ードを、伝熱面の長ざ方向と平行な軸を中心として回転
するスクリュー、または円柱に複数の板状突起物が付い
た回転体としたのであるが、この蒸発缶の伝熱面に処理
液が供給されると、まず、回転式ブレードによシ、処理
液は薄膜化されると同時に下方に掻き下げられる。そし
て、この閲に処理液は＃Ｍされ、場合により結晶が析出
し、スラリー化する。蒸発缶下部では、さらに蒸発が進
み、スラリーから固体に転化することも起こる。このよ
うな場合でも１回転式ブレードは回転により、蒸発缶伝
熱面に析出した固体を掻き落し、スケーリングを防止で
き、また、自らへの付着も１回転力で振シ落すことによ
り防止できるのである。In the present invention, a blade attached to a rotor rotating in an evaporator having a cylindrical or conical heat transfer surface is connected to a screw or a cylinder that rotates about an axis parallel to the length direction of the heat transfer surface. When the processing liquid is supplied to the heat transfer surface of the evaporator, the processing liquid is first turned into a thin film by the rotating blade. At the same time, it is pushed downward. At this point, the treatment liquid is subjected to #M treatment, whereupon crystals are precipitated and turned into a slurry. In the lower part of the evaporator, evaporation progresses further and the slurry may be converted to solid. Even in such cases, the single-rotary blade rotates to scrape off the solids deposited on the heat transfer surface of the evaporator, preventing scaling, and also preventing the solids from sticking to itself by shaking them off with one rotation of force. be.
（実施例）
以下１図面に示す一実施例にしたがって１本発明の詳細
な説明する。(Example) The present invention will be described in detail below according to an example shown in one drawing.
第１図は遠心式薄膜蒸発装置の縦断面図、第２図は横断
面図である。第１図において、処理液供給口１よシ加熱
用ジャケット２を備えた蒸発缶伝熱面３に処理液が供給
される。第１図においては。FIG. 1 is a longitudinal cross-sectional view of a centrifugal thin film evaporator, and FIG. 2 is a cross-sectional view. In FIG. 1, a processing liquid is supplied through a processing liquid supply port 1 to a heat transfer surface 3 of an evaporator provided with a heating jacket 2. In Figure 1.
伝熱面３は円筒状であるが１円錐状であってもさしつか
えなｈ０供給される処理液は、モーター４で駆動される
ローター５にバネ６で固定された回転式ブレード７によ
り、蒸発缶伝熱面３に沿って薄膜化される。回転式ブレ
ード７はバネ６によシ蒸発缶伝熱面３に押し付けられて
いるため、ローター５が回転すると、伝熱面３および処
理液との摩擦力によプ、伝熱面３の長さ方向と平行な軸
８全中心として回転する。Although the heat transfer surface 3 has a cylindrical shape, it is acceptable even if it has a conical shape. The film is thinned along the heat transfer surface 3. Since the rotary blade 7 is pressed against the evaporator heat transfer surface 3 by the spring 6, when the rotor 5 rotates, the length of the heat transfer surface 3 is reduced due to the frictional force between the heat transfer surface 3 and the processing liquid. It rotates around an axis 8 parallel to the horizontal direction.
回転式ブレード７は第１図および第６図では上下２個の
軸受９に内装されたベアリング１Ｇにより、伝熱面３の
長さ方向と平行な軸８のまわりに自由に回転できるスク
リュー構造となっているが、本発明の回転式ブレード７
の構造は、これに限定されるものではなく、第４図に示
すように、円柱１１に複数の板状突起物１２が付いた回
転体であっても、上下２個の軸受９間で自由に回転可能
なブレードであれば、なんらさしつかえない。In FIGS. 1 and 6, the rotary blade 7 has a screw structure that can freely rotate around an axis 8 parallel to the length direction of the heat transfer surface 3 by bearings 1G installed in two upper and lower bearings 9. However, the rotary blade 7 of the present invention
The structure of is not limited to this, and as shown in FIG. As long as the blade is rotatable, there is nothing wrong with that.
また１回転式ブレード７を蒸発缶伝熱面３に押し付ける
力は、第１図、第２図、第５図および第４図では板バネ
６になっているが、これも板バネに限定されるものでは
なく、コイルバネでもよいし、また、バネ等を使用せず
、ローターの回転による遠心力だけにより、回転式ブレ
ード７を蒸発缶伝熱面３に押し付ける方式であっても、
なんらさしつかえない。この場合、軸受９とローター５
の接続は、第５図に示すように、ローター５に直角に取
り付けられたパイプ１３に、軸受９に取り付けられたシ
ャフト１４を挿入する形式が一例として挙げられる。In addition, the force that presses the single-rotary blade 7 against the evaporator heat transfer surface 3 is provided by a leaf spring 6 in FIGS. 1, 2, 5, and 4, but this is also limited to a leaf spring. A coil spring may be used instead of a coil spring, or even a method in which the rotary blade 7 is pressed against the evaporator heat transfer surface 3 only by the centrifugal force caused by the rotation of the rotor without using a spring or the like.
I have no reservations. In this case, bearing 9 and rotor 5
As shown in FIG. 5, one example of the connection is a type in which a shaft 14 attached to a bearing 9 is inserted into a pipe 13 attached at right angles to the rotor 5.
以上説明した回転式グレード７によシ、処理液は薄膜化
されると同時に下方に掻き下げられる。By the rotary grade 7 described above, the processing liquid is made into a thin film and at the same time is scraped downward.
この間に処理液Ｆｉａｍされ、場合によシ結晶が析出し
、スラリー化する。蒸発缶下部ではさらに蒸発が進み、
スラリーから固体に転化することも起こる。上記の場合
でも、回転式ブレード７は回転によシ、蒸発缶伝熱面３
に析出し友固体を掻き落し、また、自らへの付着も回転
力で振シ落す。かくして析出した結晶は、粉末またはフ
レーク状となって排出口１５より糸外に取シ出される。During this time, the processing liquid is heated, and in some cases, crystals are precipitated, forming a slurry. Evaporation progresses further at the bottom of the evaporator,
Conversion from slurry to solid also occurs. Even in the above case, the rotary blade 7 does not rotate, and the evaporator heat transfer surface 3
It scrapes off any solids that may have deposited on it, and also shakes off any adhesion to itself using rotational force. The thus precipitated crystals are taken out of the thread from the discharge port 15 in the form of powder or flakes.
−万、蒸発缶内に発生した蒸気は、蒸気出口１６よシ系
外に導かれ１図示しない凝縮器に送られる。- The steam generated in the evaporator is led out of the system through the steam outlet 16 and sent to a condenser (not shown).
本発明の回転式ブレード７は、特にスラリーから固形化
する段階の濃縮に効果があるので、蒸発缶のこの帯域に
相当する部分だけ回転式ブレード７にし、他の液体部分
の濃縮は従来の固定式ブレードで濃縮を行なう方式、す
なわち、ブレードの一部分のみ回転式ブレード７にする
ことも可能である。もちろん全体を回転式ブレード７に
しても、液体の濃縮になんらさしつかえない。The rotary blade 7 of the present invention is particularly effective in concentrating the slurry at the stage of solidification. Therefore, only the portion of the evaporator corresponding to this zone is provided with the rotary blade 7, and the other liquid portions are concentrated using the conventional stationary blade. It is also possible to perform the concentration using a rotary blade, that is, to use only a portion of the blade as the rotary blade 7. Of course, even if the entire structure is made of a rotary blade 7, there will be no problem in concentrating the liquid.
（発明の効果）
本発明によシ、従来の遠心式薄膜蒸発装置で困難でめっ
た濃縮によシ結晶が析出する物質、例えば、食塩水、苛
性ソーダ水溶液等の濃縮固形化が薄膜蒸発装置で可能と
なり、その工業的利点は大きい。(Effects of the Invention) According to the present invention, it is possible to use a thin film evaporator to condense and solidify substances that are difficult to concentrate using conventional centrifugal thin film evaporators, but crystals precipitate, such as salt water and aqueous caustic soda solutions. Therefore, its industrial advantages are great.
第１図は本発明に係る遠心式薄膜蒸発装置の縦断面図、
第２図は同横断面図、第５図は回転式ブレードの部分拡
大正面図、第４図は別の回転式ブレードの部分拡大正面
図、第５図は軸受とローターの接続の一例を示す部分拡
大正面図である。
１・・・・・・・・・処理液供給口 ２・・・・・・・
・・加熱用ジャケット３・・・・・・・・・蒸発缶伝熱
面 ４・・・・・・・・・モーター゛ ５・・・・・・
・・・ローター ６・・・・・・・・・バネ ７・・・
・・・・・・回転式１式％
ベアリング １１・・・・・・・・・円柱 １２・・・
・・・・・・板状突起物 １３・・・・・・・・・パイ
プ １４・・・・・・・・・シャフト１５・・・・・・
・・・排出口 １６・・・・・・・・・蒸気出口第１図FIG. 1 is a longitudinal cross-sectional view of a centrifugal thin film evaporator according to the present invention;
Figure 2 is a cross-sectional view of the same, Figure 5 is a partially enlarged front view of a rotary blade, Figure 4 is a partially enlarged front view of another rotary blade, and Figure 5 is an example of a connection between a bearing and a rotor. It is a partially enlarged front view. 1... Processing liquid supply port 2...
... Heating jacket 3 ... Evaporator heat transfer surface 4 ... Motor 5 ...
...Rotor 6...Spring 7...
...Rotary type 1 set% Bearing 11...Cylinder 12...
...Plate-shaped protrusion 13...Pipe 14...Shaft 15...
...Exhaust port 16...Steam outlet Figure 1
Claims (1)
するローターに取り付けられたブレードが処理液を伝熱
面に均一に薄膜状に押し拡げ、攪拌する遠心式薄膜蒸発
装置において、該ブレード全体またはその一部が、伝熱
面の長さ方向と平行な軸を中心として回転するスクリュ
ー、または円柱に複数の板状突起物が付いた回転体であ
ることを特徴とする遠心式薄膜蒸発装置。In a centrifugal thin film evaporator, a blade attached to a rotor rotating inside an evaporator having a cylindrical or conical heat transfer surface spreads and stirs the processing liquid into a thin film uniformly on the heat transfer surface. Centrifugal thin film evaporation characterized in that the whole or a part thereof is a screw rotating around an axis parallel to the length direction of the heat transfer surface, or a rotating body with a plurality of plate-like protrusions attached to a cylinder. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25559386A JPS63111902A (en) | 1986-10-29 | 1986-10-29 | Centrifugal film evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25559386A JPS63111902A (en) | 1986-10-29 | 1986-10-29 | Centrifugal film evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63111902A true JPS63111902A (en) | 1988-05-17 |
Family
ID=17280881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25559386A Pending JPS63111902A (en) | 1986-10-29 | 1986-10-29 | Centrifugal film evaporator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63111902A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861304A (en) * | 2014-01-01 | 2014-06-18 | 蔡卫冲 | Scraping plate evaporator |
| CN108211386A (en) * | 2017-10-26 | 2018-06-29 | 湖南工业大学 | A kind of reversed natural-circulation evaporator of automatic cleaning type |
-
1986
- 1986-10-29 JP JP25559386A patent/JPS63111902A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861304A (en) * | 2014-01-01 | 2014-06-18 | 蔡卫冲 | Scraping plate evaporator |
| CN108211386A (en) * | 2017-10-26 | 2018-06-29 | 湖南工业大学 | A kind of reversed natural-circulation evaporator of automatic cleaning type |
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