JPH06190201A - Evaporating concentrating device - Google Patents

Evaporating concentrating device

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Publication number
JPH06190201A
JPH06190201A JP27782692A JP27782692A JPH06190201A JP H06190201 A JPH06190201 A JP H06190201A JP 27782692 A JP27782692 A JP 27782692A JP 27782692 A JP27782692 A JP 27782692A JP H06190201 A JPH06190201 A JP H06190201A
Authority
JP
Japan
Prior art keywords
concentration
concentrator
boiling point
liquid
concentrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP27782692A
Other languages
Japanese (ja)
Inventor
Michio Miura
三智男 三浦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sasakura Engineering Co Ltd
Original Assignee
Sasakura Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sasakura Engineering Co Ltd filed Critical Sasakura Engineering Co Ltd
Priority to JP27782692A priority Critical patent/JPH06190201A/en
Publication of JPH06190201A publication Critical patent/JPH06190201A/en
Pending legal-status Critical Current

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  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

PURPOSE:To lower the cost for concentration control of a concentrate and to make the concentration of the concentrate constant even when the concentration of the original solution is changed. CONSTITUTION:This device is provided with a concentrator 1, a steam ejector 2, temperature sensors 3, 6, a solenoid valve 4 for discharging a concentrate and a controller 5. The controller 5 opens/closes the solenoid valve 4 to control the discharge of the concentrate when the difference between the temperatures of the concentrate and steam detected by the temperature sensors 3, 6, that is, the boiling point rising becomes a fixed upper limit or lower limit. Consequently the concentration of the concentrate discharged in the concentration range corresponding to the set temperature range of the boiling point rising is controlled. Therefore, the concentration detecting method is simple and is not affected by the change in the concentration of the original solution.

Description

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

【0001】[0001]

【産業上の利用分野】本発明は、水溶液から成る原液を
濃縮器に導入し、該濃縮器内の液を加熱して主として水
分を蒸発させ、液を所定の濃度に濃縮して濃縮液として
排出する蒸発濃縮装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention introduces a stock solution of an aqueous solution into a concentrator, heats the solution in the concentrator to evaporate mainly water, and concentrates the solution to a predetermined concentration to obtain a concentrated solution. The present invention relates to an evaporative concentration device for discharging.

【0002】[0002]

【従来の技術】蒸発濃縮装置では、濃縮液の濃度を設定
して、その濃度の濃縮液を排出するように濃度制御がさ
れている。濃縮液の濃度を設定する方法としては、従
来、液の物性を測定する方法、濃縮倍率を演算する方
法、タイマーで設定する方法等が採用されている。
2. Description of the Related Art In an evaporative concentrator, the concentration of a concentrated liquid is set and the concentration is controlled so as to discharge the concentrated liquid of that concentration. As a method for setting the concentration of the concentrated liquid, conventionally, a method of measuring the physical properties of the liquid, a method of calculating the concentration ratio, a method of setting with a timer, etc. have been adopted.

【0003】液の物性を測定する方法は、例えば、比
重、電気伝導度、Brix及び濁度等と濃度との関係を
予め把握しておき、目的とする濃度と計測器により計測
したこれらの測定値とを対比させることにより、排出す
る濃縮液を一定濃度に保持する方法であるが、比重を用
いる場合にはその連続計測用計器が高価になり、又、電
気伝導度やBrixもしくは濁度では濃度を代表できな
い場合がある等の問題がある。例えば電気伝導度による
濃度制御では、原液中の電解質の濃度が変化する場合に
は対応できないという問題がある。濃縮倍率を演算する
方法では、濃縮倍率(原液流量/(原液流量−蒸留水流
量))をシーケンサーで演算処理し、その値が一定にな
るように濃縮液排出弁を開閉することにより、濃縮液を
一定濃度に保持する方法であるが、原液の濃度が変化す
る場合には、濃縮液の濃度を一定にすることができな
い。タイマーを用いる方法では、タイマーで最適な時間
を設定し、その時間間隔で排出弁を開閉することにより
排出する濃縮液の一定濃度を保持しようとするが、同様
に、原液の濃度が変化する場合には一定濃度を保持でき
ないという問題がある。
The method for measuring the physical properties of a liquid is, for example, that the relationship between the specific gravity, electric conductivity, Brix, turbidity, etc. and the concentration is grasped in advance, and the desired concentration and the measurement by a measuring instrument are performed. This is a method of keeping the discharged concentrated liquid at a constant concentration by comparing it with the value, but when using specific gravity, the instrument for continuous measurement becomes expensive, and in the case of electrical conductivity, Brix or turbidity, There is a problem that the concentration cannot be represented in some cases. For example, there is a problem that the concentration control by electric conductivity cannot cope with the case where the concentration of the electrolyte in the stock solution changes. In the method of calculating the concentration ratio, the concentration ratio (stock solution flow rate / (stock solution flow rate-distilled water flow rate)) is calculated by a sequencer, and the concentrate discharge valve is opened and closed so that the value becomes constant. However, if the concentration of the stock solution changes, the concentration of the concentrated solution cannot be kept constant. In the method using a timer, the optimum time is set by the timer, and the constant concentration of the concentrated liquid to be discharged is kept by opening and closing the discharge valve at that time interval, but similarly, when the concentration of the stock solution changes. Has a problem that it cannot maintain a constant concentration.

【0004】[0004]

【発明が解決しようとする課題】本発明は従来技術に於
ける上記問題を解決し、濃縮液の濃度制御のためのコス
トが低廉で、原液の濃度が変化する場合にも排出する濃
縮液の濃度を確実に一定の濃度にすることができる蒸発
濃縮装置を提供することを課題とする。
DISCLOSURE OF THE INVENTION The present invention solves the above problems in the prior art, reduces the cost for controlling the concentration of the concentrated solution, and reduces the concentration of the concentrated solution to be discharged even when the concentration of the concentrated solution changes. An object of the present invention is to provide an evaporative concentrator that can surely make the concentration constant.

【0005】[0005]

【課題を解決するための手段】本発明は上記課題を解決
するために、水溶液から成る原液を濃縮器に導入し、該
濃縮器内の液を加熱して主として水分を蒸発させ、液を
所定の濃度に濃縮して濃縮液として排出する蒸発濃縮装
置において、前記濃縮器内の液の沸点上昇を検出する検
出手段と、前記濃縮液を排出する排出手段と、前記検出
手段が検出した沸点上昇が所定値になると前記濃縮液を
排出するように前記排出手段を制御する制御手段と、を
有することを特徴とする。
In order to solve the above problems, the present invention introduces a stock solution consisting of an aqueous solution into a concentrator, heats the solution in the concentrator to evaporate mainly the water, and the solution is made into a predetermined solution. In an evaporative concentrator that concentrates to a concentration of and discharges as a concentrated liquid, a detection unit that detects a rise in the boiling point of the liquid in the concentrator, a discharge unit that discharges the concentrated liquid, and a rise in the boiling point detected by the detection unit. And a control means for controlling the discharging means so that the concentrated liquid is discharged when becomes a predetermined value.

【0006】[0006]

【作 用】物質が水に溶解した水溶液は、その水溶液中
の物質の濃度に対応して水溶液の沸点が上昇する。本発
明によれば、検出手段によりこの沸点上昇を検出するの
で、間接的ではあるがその水溶液の濃度を検出すること
ができる。そして、制御手段は濃縮液の沸点上昇が所定
値になると濃縮液を排出するように排出手段を制御する
ので、濃縮液の濃度はその沸点上昇に対応した濃度以上
には上昇しないことになる。このような濃度制御によれ
ば、タイマーで一定時期に濃縮液を排出するのでなく、
実際に濃度を測定して濃縮液を排出することになるの
で、原液の濃度が変化する場合であっても、濃縮液の濃
度を一定値以下に保持することが可能になる。ここで、
沸点上昇は、濃縮器内の液温と蒸発する蒸気の飽和温度
との差であるから、沸点上昇を検出する検出手段は、直
接的には、これらの温度を検出してその差を計算して出
力する手段ということになる。但し、蒸気の飽和温度に
代えて、これと実質的に同じ温度であるその復水温度
(過冷却していない温度)を検出するようにしてもよ
い。又、飽和蒸気温度とその温度における飽和蒸気圧力
とが一定の関係にあることから、蒸発する蒸気の圧力即
ち濃縮器内圧力を検出し、その圧力から沸点上昇を換算
検出するようにしてもよい。
[Operation] In an aqueous solution of a substance dissolved in water, the boiling point of the aqueous solution rises according to the concentration of the substance in the aqueous solution. According to the present invention, this increase in boiling point is detected by the detection means, so that the concentration of the aqueous solution can be detected indirectly. Then, the control means controls the discharging means so as to discharge the concentrated liquid when the boiling point rise of the concentrated liquid reaches a predetermined value, so that the concentration of the concentrated liquid does not rise above the concentration corresponding to the rising boiling point. According to such concentration control, instead of discharging the concentrated liquid at a certain time with a timer,
Since the concentration is actually measured and the concentrated liquid is discharged, it is possible to maintain the concentration of the concentrated liquid below a certain value even when the concentration of the stock solution changes. here,
Since the rise in boiling point is the difference between the liquid temperature in the condenser and the saturation temperature of the vaporized vapor, the detection means for detecting the rise in boiling point directly detects these temperatures and calculates the difference. It will be a means of outputting. However, instead of the saturation temperature of the steam, the condensate temperature (the temperature at which it is not supercooled) that is substantially the same as the temperature may be detected. Further, since the saturated vapor temperature and the saturated vapor pressure at that temperature have a constant relationship, the pressure of the vapor to be vaporized, that is, the pressure in the concentrator may be detected, and the boiling point increase may be converted and detected from the pressure. .

【0007】[0007]

【実 施 例】図1は、本発明を適用することができる
実施例の蒸発濃縮装置の全体構成を示す。本装置は、濃
縮器1と、濃縮器1内の液を加熱する蒸気を供給する蒸
気エジェクタ2と、濃縮液の温度を検出する温度センサ
3と、濃縮液を排出する排出手段としての電動弁4と、
制御手段としてのコントローラ5と、濃縮器1内で蒸発
した蒸気の飽和温度を検出する温度センサ6とを備えて
いる。
[Examples] FIG. 1 shows the overall configuration of an evaporative concentration apparatus according to an example to which the present invention can be applied. This apparatus comprises a concentrator 1, a steam ejector 2 for supplying steam for heating the liquid in the concentrator 1, a temperature sensor 3 for detecting the temperature of the concentrated liquid, and an electrically operated valve as a discharging means for discharging the concentrated liquid. 4 and
A controller 5 as control means and a temperature sensor 6 for detecting the saturation temperature of the vapor evaporated in the concentrator 1 are provided.

【0008】水に溶解する物質を水に溶解させた水溶液
から成る原液、例えば塩化カルシウム溶液は、レベルス
イッチ8により作動されるレベル制御弁7を介して濃縮
器1内に導入される。濃縮器1内に導入された原液は内
部の液と混合し、液は循環ポンプ9に吸入されて再び濃
縮器1の上部に導入され、散布されて内部の図示しない
蒸発管に接触して水分を蒸発させつつ下方に流下する。
A stock solution of an aqueous solution of a substance soluble in water, for example a calcium chloride solution, is introduced into the concentrator 1 via a level control valve 7 operated by a level switch 8. The undiluted solution introduced into the concentrator 1 mixes with the solution inside, and the solution is sucked into the circulation pump 9 and again introduced into the upper part of the concentrator 1, and is sprayed and comes into contact with an evaporation pipe (not shown) inside, so that water content is While flowing down, it flows downward.

【0009】蒸気エジェクタ2は、駆動蒸気が供給され
ることにより、濃縮器1で蒸発した蒸気の一部を吸引
し、これらの蒸気は、エジェクタ内で圧力を回復して濃
縮器1の蒸発管内に導入され、循環水に熱を与えてその
中の水分を蒸発させることにより復水する。
[0009] The steam ejector 2 sucks a part of the vapor evaporated in the concentrator 1 by being supplied with the driving vapor, and these vapors recover their pressure in the ejector and are in the vaporization pipe of the concentrator 1. Introduced into the water, heat is given to the circulating water to evaporate the water contained therein, thereby condensing the water.

【0010】循環ポンプ9の吸入ラインには、循環水の
温度を検出する温度センサ3が設けられ、又、循環ポン
プ9の吐出ラインには、循環系統から分岐して電動弁4
を経由して濃縮液を排出するラインが設けられている。
温度センサ3で検出した温度はコントローラ5に入れら
れる。
A temperature sensor 3 for detecting the temperature of the circulating water is provided in the suction line of the circulation pump 9, and a motor valve 4 is provided in the discharge line of the circulation pump 9 branching from the circulation system.
A line is provided for discharging the concentrated liquid via the.
The temperature detected by the temperature sensor 3 is put into the controller 5.

【0011】濃縮器1内で蒸発した水蒸気は、頂部から
取り出されて復水器10に入り、冷却水により冷却され
て復水し、復水ポンプ11で吸引されて図示しない復水
タンクに送られる。濃縮器1から復水器10へ至るライ
ンには、蒸発した水蒸気の温度を検出するための温度セ
ンサ6が設けられている。温度センサ6からの信号も、
コントローラ5に入れられる。復水器10は、真空ポン
プ12により内部を負圧にされている。又、濃縮器1の
頂部には、圧力検出器13を設け、濃縮器1内の圧力を
一定にするように、制御弁14を開閉して少量の空気を
吸引させ、真空ポンプ12による復水器10内の圧力を
調整している。復水器10は、又、加熱蒸気の復水室か
らも蒸気を吸引し、加熱蒸気の背圧を維持している。な
お、復水ポンプ11の吐出ラインにはレベルコントロー
ル弁が設けられ、復水器内の復水レベルが制御されてい
る。
The water vapor evaporated in the concentrator 1 is taken out from the top and enters the condenser 10, cooled by cooling water to condense, and sucked by the condensate pump 11 to be sent to a condensate tank (not shown). To be A line from the concentrator 1 to the condenser 10 is provided with a temperature sensor 6 for detecting the temperature of evaporated water vapor. The signal from the temperature sensor 6
It is put in the controller 5. The condenser 10 has a negative pressure inside by a vacuum pump 12. Further, a pressure detector 13 is provided on the top of the concentrator 1, and the control valve 14 is opened and closed to suck a small amount of air so that the pressure inside the concentrator 1 is constant, and the condensate by the vacuum pump 12 is condensed. The pressure in the vessel 10 is adjusted. The condenser 10 also sucks steam from the condensing chamber for the heated steam and maintains the back pressure of the heated steam. A level control valve is provided on the discharge line of the condensate pump 11 to control the condensate level in the condenser.

【0012】コントローラ5は、温度センサ3及び6で
検出した温度T1 及びT2 が入力されることによりその
温度差即ち沸点上昇を計算し、その値が一定値になると
電動弁4を開いて濃縮器1内の濃縮液を排出するように
電動弁4を制御する。又本実施例では、コントローラ5
は、沸点上昇が前記一定値より低い他の一定値になる
と、電動弁4を閉じるようにしている。このような制御
において、発生する蒸気が過熱されていたり、放熱によ
り温度降下していることがある。このようなときにも、
温度センサ6で検出した温度T2 が発生蒸気の飽和温度
になるようにするには、温度センサ6の表面を常に湿っ
た状態(Condensateを保持する状態)にす
る。この場合、過熱温度が大きな値であったとしても、
過熱熱量は蒸気の潜熱に較べて非常に小さいので、少量
の復水を保持させるか又は供給するようにすればよい。
そのためには、例えば、温度センサ6の上部から少量の
蒸留水(温度はほぼ器内温度に加温したもの)を滴下す
る方法、温度センサ6の上部に冷却部(フィンのような
もので外気で冷却)を設けてCondensateがセ
ンサに流れるようにする方法、ガーゼのようなもので包
み温度センサ6に水を保持させる方法、等を用いること
ができる。
The controller 5 receives the temperatures T 1 and T 2 detected by the temperature sensors 3 and 6 to calculate the temperature difference, that is, the boiling point rise, and when the value becomes a constant value, the motor-operated valve 4 is opened. The motor-operated valve 4 is controlled so that the concentrated liquid in the concentrator 1 is discharged. In this embodiment, the controller 5
The electric valve 4 is closed when the boiling point rises to another constant value lower than the above-mentioned constant value. In such control, generated steam may be overheated or the temperature may drop due to heat dissipation. Even in this case,
In order for the temperature T 2 detected by the temperature sensor 6 to reach the saturation temperature of the generated steam, the surface of the temperature sensor 6 is always in a wet state (a state in which the Condensate is held). In this case, even if the overheating temperature is large,
Since the amount of heat of superheat is much smaller than the latent heat of steam, a small amount of condensate water may be retained or supplied.
For that purpose, for example, a method of dropping a small amount of distilled water (the temperature is approximately warmed to the internal temperature) from the upper portion of the temperature sensor 6, and a cooling unit (a fin-like external air Can be used to allow the Condensate to flow to the sensor, a method of wrapping the temperature sensor 6 with water wrapped in something like gauze, and the like.

【0013】以上のような構成により、本蒸発濃縮装置
では以下の如き動作が行われる。濃縮器1にはエジェク
タ2から加熱蒸気が供給され、内部の液は循環されつつ
加熱されて蒸発し、濃縮器1から主として水が蒸発・除
去される。一方、水が蒸発することにより、濃縮器1内
の液のレベルが下がるため、原液がレベル制御によりに
濃縮器1内に補給される。このような運転状態が継続す
ることにより、濃縮器1内の液は次第に濃縮される。濃
縮器内で液が濃縮されると、その沸点が上昇する。本発
明によれば、この沸点上昇を検出し、その沸点上昇温度
が一定の温度になると電動弁4を開いて濃縮液を排出す
るので、この一定の温度を、目的とする濃度に対応した
温度に設定することにより、濃縮器1内の濃度を一定の
濃度以内に維持することができる。即ち、濃縮器1内の
濃度の高い濃縮液が排出され、濃度の低い原液が補給さ
れることにより、内部の液の濃度を下げ、過濃縮を防止
することができる。濃縮液の排出と原液の供給とによ
り、濃縮器1内の濃度が一定値まで下がり、沸点上昇が
低下すると、コントローラ5は電動弁4を閉じるように
制御する。このように、沸点上昇によって電動弁4を開
閉すると、原液の濃度に影響されることなく、排出する
濃縮液の濃度は常に一定範囲に維持される。
With the above-mentioned structure, the following operation is performed in the present evaporative concentration device. Heating vapor is supplied from the ejector 2 to the concentrator 1, and the liquid inside is heated while being circulated and evaporated, and water is mainly evaporated and removed from the concentrator 1. On the other hand, as the water evaporates, the level of the liquid in the concentrator 1 decreases, so that the stock solution is replenished in the concentrator 1 by level control. By continuing such an operating state, the liquid in the concentrator 1 is gradually concentrated. When the liquid is concentrated in the concentrator, its boiling point rises. According to the present invention, this boiling point rise is detected, and when the boiling point rise temperature reaches a constant temperature, the motor-operated valve 4 is opened and the concentrated liquid is discharged. Therefore, this constant temperature is set to a temperature corresponding to the target concentration. By setting to, the concentration in the concentrator 1 can be maintained within a certain concentration. That is, the concentrated liquid having a high concentration in the concentrator 1 is discharged and the undiluted liquid having a low concentration is replenished, so that the concentration of the liquid inside can be reduced and overconcentration can be prevented. When the concentration in the concentrator 1 drops to a certain value and the boiling point rises due to the discharge of the concentrated solution and the supply of the undiluted solution, the controller 5 controls the motor-operated valve 4 to close. In this way, when the motor-operated valve 4 is opened / closed due to the boiling point increase, the concentration of the concentrated liquid to be discharged is always maintained within a fixed range without being affected by the concentration of the stock liquid.

【0014】図2は、原液の一例として塩化カルシウム
溶液の沸点上昇のカーブである。例えばこの溶液を70
°Cで蒸発させる場合には、塩化カルシウムの重量濃度
が50%で沸点上昇は25.8°C、49%で25.2
°C、51%では26.4°Cとなる。従って、沸点上
昇である(T1 −T2 )が26.4°Cになると、コン
トローラ5が電動弁4を開くように制御すれば、濃縮液
の濃度を51%までの値に制御することができる。即
ち、電動弁4が開くことにより濃縮器1内の濃縮液が排
出され、濃縮器1内に原液が補給されることにより、内
部の液の濃度が低下する。一方、液の濃度が49%まで
低下すると、沸点上昇が25.2°Cまで低下するの
で、温度センサ3及び6でこれを検出し、コントローラ
5は、電動弁4を閉じるよう制御する。このような制御
によれば、沸点上昇の温度差が1.2°Cあれば、濃縮
液の濃度を49%と51%との間で制御することができ
る。そして、1.2°Cの温度範囲があれば、このよう
な制御は十分可能であり、簡単な制御で排出する濃縮液
が狭い濃縮範囲に維持されることになる。
FIG. 2 is a curve of the boiling point rise of a calcium chloride solution as an example of the stock solution. For example, this solution
When evaporating at ° C, the weight concentration of calcium chloride is 50%, the boiling point rise is 25.8 ° C, and the boiling point rises to 25.2 at 49%.
It becomes 26.4 ° C at ° C and 51%. Therefore, when the boiling point rise (T 1 −T 2 ) becomes 26.4 ° C., the controller 5 controls the motor-operated valve 4 to open so that the concentration of the concentrated liquid is controlled to a value up to 51%. You can That is, when the motor-operated valve 4 is opened, the concentrated liquid in the concentrator 1 is discharged, and the concentrated liquid is replenished in the concentrator 1, so that the concentration of the internal liquid is reduced. On the other hand, when the liquid concentration drops to 49%, the boiling point rise drops to 25.2 ° C, so the temperature sensors 3 and 6 detect this, and the controller 5 controls the electric valve 4 to close. According to such control, the concentration of the concentrated liquid can be controlled between 49% and 51% if the temperature difference of the boiling point rise is 1.2 ° C. If the temperature range is 1.2 ° C, such control is sufficiently possible, and the concentrated liquid to be discharged can be maintained in a narrow concentration range by simple control.

【0015】なお以上では、沸点上昇を検出して電動弁
4を閉じることにより、原液の濃度が低下した場合でも
排出する濃縮液の濃度が一定値以下に低下しないように
したが、使用する原液の濃度範囲が或る程度定まってい
る場合等には、低い濃度の原液を想定して、タイマー等
により一定時間だけ電動弁4を開けるような制御方法と
してもよい。
In the above, by detecting the rise of the boiling point and closing the motor-operated valve 4, the concentration of the concentrated liquid to be discharged is prevented from falling below a certain value even if the concentration of the stock solution is reduced. If the concentration range is fixed to a certain extent, a control method may be used in which the motorized valve 4 is opened for a certain period of time by a timer or the like, assuming a low concentration stock solution.

【0016】又、以上の実施例では、濃縮液を循環させ
る水平管蒸発方式の蒸発濃縮装置について説明した。但
し、本発明は、浸管式等他の形式の蒸発濃縮装置にも適
用できるものである。
Further, in the above embodiments, the horizontal tube evaporation type evaporative concentrator for circulating the concentrated liquid has been described. However, the present invention can also be applied to other types of evaporative concentration devices such as a dip tube type.

【0017】[0017]

【発明の効果】以上の如く本発明によれば、沸点上昇の
検出という非常に簡単な濃度検出方法により、原液の濃
度に関係なく、一定の濃度範囲の濃縮液を排出すること
ができる。
As described above, according to the present invention, it is possible to discharge a concentrated solution in a certain concentration range regardless of the concentration of the stock solution by a very simple concentration detection method of detecting an increase in boiling point.

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

【図1】実施例の蒸発濃縮装置の系統図である。FIG. 1 is a system diagram of an evaporative concentration apparatus according to an embodiment.

【図2】塩化カルシウム溶液の沸点上昇を示す曲線図で
ある。
FIG. 2 is a curve diagram showing an increase in boiling point of a calcium chloride solution.

【符号の説明】[Explanation of symbols]

1 濃縮器 3 温度センサ(検出手段) 4 電動弁(排出手段) 5 コントローラ(制御手段) 6 温度センサ(検出手段) 1 Concentrator 3 Temperature Sensor (Detecting Means) 4 Motorized Valve (Discharging Means) 5 Controller (Control Means) 6 Temperature Sensor (Detecting Means)

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 水溶液から成る原液を濃縮器に導入し、
該濃縮器内の液を加熱して主として水分を蒸発させ、液
を所定の濃度に濃縮して濃縮液として排出する蒸発濃縮
装置において、 前記濃縮器内の液の沸点上昇を検出する検出手段と、前
記濃縮液を排出する排出手段と、前記検出手段が検出し
た沸点上昇が所定値になると前記濃縮液を排出するよう
に前記排出手段を制御する制御手段と、を有することを
特徴とする蒸発濃縮装置。
1. A stock solution consisting of an aqueous solution is introduced into a concentrator,
In an evaporative concentrator that heats the liquid in the concentrator to mainly evaporate water, concentrates the liquid to a predetermined concentration and discharges it as a concentrated liquid, detecting means for detecting an increase in boiling point of the liquid in the concentrator. An evaporation unit for discharging the concentrated liquid; and a control unit for controlling the discharging unit to discharge the concentrated liquid when the boiling point rise detected by the detection unit reaches a predetermined value. Concentrator.
JP27782692A 1992-09-21 1992-09-21 Evaporating concentrating device Pending JPH06190201A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27782692A JPH06190201A (en) 1992-09-21 1992-09-21 Evaporating concentrating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27782692A JPH06190201A (en) 1992-09-21 1992-09-21 Evaporating concentrating device

Publications (1)

Publication Number Publication Date
JPH06190201A true JPH06190201A (en) 1994-07-12

Family

ID=17588807

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27782692A Pending JPH06190201A (en) 1992-09-21 1992-09-21 Evaporating concentrating device

Country Status (1)

Country Link
JP (1) JPH06190201A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1110134A (en) * 1997-06-20 1999-01-19 Fujitsu Ltd Waste liquid treating apparatus and waste liquid treating method
JPH11199203A (en) * 1998-01-07 1999-07-27 Osaka Gas Co Ltd Treatment of waste hydrochloric acid
JP2015097982A (en) * 2013-11-18 2015-05-28 三菱日立パワーシステムズ株式会社 Reclaiming method
CN115536092A (en) * 2022-09-20 2022-12-30 包头市佳蒙泰环保科技有限公司 Method for controlling end point concentration of rare earth magnesium sulfate wastewater concentrated solution

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1110134A (en) * 1997-06-20 1999-01-19 Fujitsu Ltd Waste liquid treating apparatus and waste liquid treating method
JPH11199203A (en) * 1998-01-07 1999-07-27 Osaka Gas Co Ltd Treatment of waste hydrochloric acid
JP2015097982A (en) * 2013-11-18 2015-05-28 三菱日立パワーシステムズ株式会社 Reclaiming method
CN115536092A (en) * 2022-09-20 2022-12-30 包头市佳蒙泰环保科技有限公司 Method for controlling end point concentration of rare earth magnesium sulfate wastewater concentrated solution

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