JPH06198101A - Evaporating concentrator - Google Patents
Evaporating concentratorInfo
- Publication number
- JPH06198101A JPH06198101A JP27782592A JP27782592A JPH06198101A JP H06198101 A JPH06198101 A JP H06198101A JP 27782592 A JP27782592 A JP 27782592A JP 27782592 A JP27782592 A JP 27782592A JP H06198101 A JPH06198101 A JP H06198101A
- Authority
- JP
- Japan
- Prior art keywords
- concentration
- liquid
- temperature
- water
- concentrator
- 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
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、水と水より高沸点の液
体等とから成る原液を一定圧力に保持される濃縮器に導
入し、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
発濃縮装置に関し、例えばフロン代替小型濃縮装置や切
削油廃液の濃縮装置等に利用される。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention introduces a stock solution of water and a liquid having a boiling point higher than that of water into a concentrator which is maintained at a constant pressure, and heats the liquid in the concentrator to evaporate mainly water. The present invention relates to an evaporative concentrator that concentrates a liquid to a predetermined concentration and discharges it as a concentrated liquid.
【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 / 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確実に濃縮
液の濃度を一定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。SUMMARY OF THE INVENTION The present invention solves the above problems in the prior art, the cost for controlling the concentration of the concentrated solution is low, and the concentrated solution can be reliably used even when the concentration of the stock solution changes. An object of the present invention is to provide an evaporative concentrator capable of keeping 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、水と水より高沸点の液体等とから成る原液
を一定圧力に保持される濃縮器に導入し、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、前記濃縮器内の液に一定の加熱熱量を供給する加熱
手段と、前記濃縮液の温度を検出する温度検出手段と、
前記濃縮液を排出する排出手段と、前記温度検出手段が
検出した温度が所定温度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 of water and a liquid having a boiling point higher than that of water into a concentrator held at a constant pressure, In the evaporative concentrator that heats the liquid to evaporate mainly the water, concentrates the liquid to a predetermined concentration and discharges it as a concentrated liquid, heating means for supplying a constant amount of heating heat to the liquid in the concentrator, Temperature detecting means for detecting the temperature of the concentrated liquid,
It is characterized by comprising: a discharging means for discharging the concentrated liquid; and a control means for controlling the discharging means so as to discharge the concentrated liquid when the temperature detected by the temperature detecting means reaches a predetermined temperature.
【０００６】[0006]
【作 用】本発明によれば、水と水より高沸点の液体等
とから成る原液を一定圧力に保持される濃縮器に導入
し、加熱手段により原液に一定の加熱熱量を供給するす
るので、濃縮器内の原液がこの熱量を受取り、原液中の
低沸点成分である水が主として蒸発し、濃縮器内の原液
の濃度が次第に上昇し、原液は濃縮液となる。原液が濃
縮液になると、蒸発する水量が少なくなるため、一定の
加熱熱量の供給を継続すると濃縮液の温度が上昇するこ
とになる。この温度上昇は、濃縮液の濃度上昇に対応し
ているので、濃縮液の温度を測定することにより、その
温度に対応した濃縮液の濃度を検出することができる。
そして本発明によれば、濃縮液の温度を検出する温度検
出手段と濃縮液を排出する排出手段とを設け、制御手段
により、温度検出手段が所定温度を検出すると濃縮液を
排出するように排出手段を制御するので、所定温度を、
濃縮液を排出するときの所定濃度に相当する温度に設定
することにより、目的とする濃度で濃縮液を排出するこ
とができる。そして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に
保持することが可能になる。[Operation] According to the present invention, a stock solution composed of water and a liquid having a boiling point higher than that of water is introduced into a concentrator which is maintained at a constant pressure, and a constant amount of heat for heating is supplied to the stock solution by a heating means. The undiluted solution in the concentrator receives this amount of heat, the water having a low boiling point in the undiluted solution is mainly evaporated, the concentration of the undiluted solution in the concentrator gradually increases, and the undiluted solution becomes a concentrated solution. When the undiluted solution becomes a concentrated solution, the amount of water that evaporates decreases, so that the temperature of the concentrated solution rises if a constant amount of heating heat is continuously supplied. This increase in temperature corresponds to the increase in the concentration of the concentrated liquid, so that by measuring the temperature of the concentrated liquid, the concentration of the concentrated liquid corresponding to that temperature can be detected.
Further, according to the present invention, the temperature detecting means for detecting the temperature of the concentrated liquid and the discharging means for discharging the concentrated liquid are provided, and the control means discharges the concentrated liquid when the temperature detecting means detects a predetermined temperature. Since the means is controlled, the predetermined temperature is
By setting the temperature corresponding to the predetermined concentration when the concentrated liquid is discharged, the concentrated liquid can be discharged at the target concentration. According to such concentration control, the concentrated liquid is actually measured and discharged instead of discharging the concentrated liquid at a certain time with a timer. Also, it becomes possible to keep the concentration of the concentrated solution constant.
【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、加熱手段としての蒸気発生器２と、濃縮液の
温度を検出する温度検出手段としての温度スイッチ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 generator 2 as a heating means, and a temperature switch 3 as a temperature detecting means for detecting the temperature of a concentrated liquid.
And a motor-operated valve 4 as a discharging means for discharging the concentrated liquid, and a controller 5 as a controlling means.
【０００８】水と水より高沸点の液体等とから成る原
液、例えば水と切削油との混合液は、一定範囲の水位に
レベル制御されている原液補給タンク６から、レベル制
御弁７及び原液流量センサ８を介して濃縮器１内に間欠
的に導入される。符号９、１０は、レベル制御弁７を開
閉させるためのレベルスイッチである。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１１
に吸入されて再び濃縮器１の上部に導入され、拡散板２
ｂの多数の孔から噴出され、内部の水平蒸発管に接触し
て水分を蒸発させつつ順次下方に流下する。A stock solution of water and a liquid having a boiling point higher than that of water, for example, a mixed solution of water and cutting oil is supplied from a stock solution replenishment tank 6 whose level is controlled to a water level within a certain range, a level control valve 7 and a stock solution. It is intermittently introduced into the concentrator 1 via the flow rate sensor 8. Reference numerals 9 and 10 are level switches for opening and closing the level control valve 7. The stock solution introduced into the concentrator 1 is mixed with the solution inside, and the solution is circulated by the circulation pump 11
Inhaled into the condenser 1 and again introduced into the upper part of the concentrator 1, and the diffuser plate 2
The water is ejected from a large number of holes in b, contacts the internal horizontal evaporation pipe, and evaporates the water to flow downward sequentially.
【０００９】蒸気発生器２は、本実施例では、一定の電
圧が印加されることにより一定の熱量を発生させる電気
ヒータ２ａにより水を蒸発させて加熱蒸気を発生させる
電気式蒸気発生器であるが、石油又はガス式の蒸気発生
器等、一定の熱量を発生させるものであればよい。蒸気
発生器２から発生した蒸気は、濃縮器１に導入され、そ
の中の加熱管内を通過する際に、これに接触した循環液
を加熱・蒸発させた後復水し、蒸気発生器２内に戻さ
れ、再び電気ヒータ２ａで加熱されて蒸発し、このよう
なサイクルが繰り返される。In this embodiment, the steam generator 2 is an electric steam generator that evaporates water by an electric heater 2a that generates a constant amount of heat when a constant voltage is applied to generate heated steam. However, an oil or gas type steam generator or the like may be used as long as it can generate a certain amount of heat. The steam generated from the steam generator 2 is introduced into the concentrator 1, and when passing through the inside of the heating pipe therein, the circulating liquid that comes into contact with the steam is heated and evaporated, and then condensed to return to the inside of the steam generator 2. And is again heated by the electric heater 2a to evaporate, and such a cycle is repeated.
【００１０】循環ポンプ１１の吸入ラインには、循環水
の温度を検出する温度スイッチ３が設けられ、又、循環
ポンプ１１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。電動弁４は、コントローラ５により通常タイマー
により一定の時間間隔で開閉され、これにより排出する
循環水の濃縮がほぼ一定になるようにされている。一
方、温度スイッチ３で検出した温度もコントローラ５に
入れられ、コントローラ５は、温度スイッチ３が一定の
温度を検出すると、電動弁４が開くようにこれを制御す
る。A temperature switch 3 for detecting the temperature of the circulating water is provided in the suction line of the circulation pump 11, and the discharge line of the circulation pump 11 is branched from the circulation system via an electric valve 4. A line for discharging the concentrated liquid is provided. The motor-operated valve 4 is opened and closed by the controller 5 at regular time intervals by a normal timer so that the concentration of circulating water to be discharged is substantially constant. On the other hand, the temperature detected by the temperature switch 3 is also input to the controller 5, and when the temperature switch 3 detects a constant temperature, the controller 5 controls the motor-operated valve 4 to open.
【００１１】濃縮器１内で蒸発した水蒸気は、その頂部
に設けられセパレータ２ｃにより蒸気中の水滴（ミス
ト）を除去された後復水器１２に流入し、冷却水により
冷却されて復水し、蒸留水ポンプ１３で吸引されて蒸留
水タンク１４に入れられ、更に蒸留水移送ポンプ１５に
より系外に移送される。復水器１２は、真空ポンプ１６
により内部を負圧にされている。又、濃縮器１から復水
器１２に至るラインには、圧力検出器１７を設け、その
部分の圧力従って濃縮器１内の圧力を一定にするよう
に、制御弁１８を開閉して少量の空気を吸引させ、真空
ポンプ１６による復水器１２内の空気及び蒸気吸引力を
調整している。符号１９は蒸留水流量センサであり、
又、符号２０は流量センサ８及び１９で検出した原液及
び蒸留水の比率を計算してその値をコントローラ５に出
力する演算器である。コントローラ５は、その比率によ
っても電動弁４を開閉する。The water vapor evaporated in the condenser 1 flows into the condenser 12 after water droplets (mist) in the steam are removed by the separator 2c provided at the top of the condenser 1 and is cooled by cooling water to be condensed. The water is sucked by the distilled water pump 13, put into the distilled water tank 14, and further transferred to the outside of the system by the distilled water transfer pump 15. The condenser 12 is a vacuum pump 16
The inside is made negative pressure by. In addition, a pressure detector 17 is provided on the line from the condenser 1 to the condenser 12, and the control valve 18 is opened / closed so as to keep the pressure in that portion and thus the pressure in the condenser 1 constant. Air is sucked, and the suction force of air and steam in the condenser 12 by the vacuum pump 16 is adjusted. Reference numeral 19 is a distilled water flow sensor,
Reference numeral 20 is an arithmetic unit for calculating the ratio of the undiluted solution and the distilled water detected by the flow rate sensors 8 and 19 and outputting the calculated value to the controller 5. The controller 5 also opens / closes the electric valve 4 depending on the ratio.
【００１２】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には蒸気発生
器２により一定の熱量が供給され、内部の液が循環され
つつ一定の熱量に相当する蒸発が行われ、濃縮器１から
は主として水が蒸発・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
液補給タンク６から原液がレベル制御により間欠的に濃
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。この
ため、前述の如くコントローラ５により一定の時間間隔
で電動弁４を開閉することにより、濃縮器１内の濃度を
制御している。しかしながら、原液の濃縮が、原液及び
蒸留水流量を演算して濃縮液の排出時間を設定したとき
に基準とした濃度よりも高い場合には、演算による電動
弁４の開閉のみでは濃縮器１内の濃度が過大になる。本
発明によれば、この問題は次のように解決される。原液
が、水より高沸点液を水に溶解した水溶液を主成分とす
る液である場合には、濃縮器内で液が濃縮されると、そ
の沸点が上昇する。一方、濃縮器１内の圧力は一定に制
御されているので、沸点が上昇すれば、それに対応して
濃縮器１内の液温が上昇し、循環液がある一定の濃度以
上になると、その温度が急速に上昇するようになる。本
発明によれば、濃度の上昇した水溶液即ち濃縮液の温度
を検出し、この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。With the above structure, the following operation is performed in the present evaporative concentration device. A constant amount of heat is supplied from the steam generator 2 to the concentrator 1, and evaporation corresponding to a constant amount of heat is performed while circulating the internal liquid, 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 is lowered, so that the undiluted liquid from the undiluted liquid supply tank 6 is intermittently replenished in the concentrator 1 by level control. By continuing such an operating state, the liquid in the concentrator 1 is gradually concentrated. Therefore, as described above, the controller 5 controls the concentration in the concentrator 1 by opening and closing the motor-operated valve 4 at regular time intervals. However, if the concentration of the undiluted solution is higher than the reference concentration when the discharge time of the undiluted solution is set by calculating the undiluted solution and distilled water flow rates, the inside of the concentrator 1 can be simply opened / closed by calculation. Too much concentration. According to the invention, this problem is solved as follows. When the undiluted solution is a solution whose main component is an aqueous solution in which a liquid having a higher boiling point than that of water is dissolved, the boiling point of the undiluted solution increases when the solution is concentrated in the concentrator. On the other hand, since the pressure in the concentrator 1 is controlled to be constant, when the boiling point rises, the liquid temperature in the concentrator 1 rises correspondingly, and when the circulating liquid reaches a certain concentration or more, The temperature rises rapidly. According to the present invention, the temperature of the concentrated aqueous solution, that is, the concentrated liquid is detected, and when the temperature reaches a constant temperature, the motor-operated valve 4 is opened to discharge the concentrated liquid. By setting the temperature corresponding to the concentration, 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.
【００１３】又、原液が水と水より高沸点液等との混合
液又は溶液である場合には、加熱により液中の水分が蒸
発する。そして水の蒸発により高沸点成分が多くなる
と、蒸発可能な水分が少なくなり蒸発速度が低下する。
このときにも一定の熱量が供給されるので、供給熱量が
過剰になってきて、濃縮液の温度が上昇することにな
る。このような温度上昇は、濃縮液の濃度と一定の関係
にあるので、濃縮液の温度を検出して電動弁４を開くこ
とにより、上記の場合と同様に濃縮器１内の濃度を制御
することができる。When the stock solution is a mixed solution or solution of water and a liquid having a higher boiling point than water, the water content in the solution evaporates by heating. When the high boiling point component increases due to the evaporation of water, the amount of water that can be evaporated decreases and the evaporation rate decreases.
Since a constant amount of heat is also supplied at this time, the amount of heat supplied becomes excessive and the temperature of the concentrated liquid rises. Since such a temperature rise has a constant relationship with the concentration of the concentrated liquid, the temperature of the concentrated liquid is detected and the motor-operated valve 4 is opened to control the concentration in the concentrator 1 as in the case described above. be able to.
【００１４】図２は、図１の装置で原液として水と高沸
点アルコール系洗浄剤（界面活性剤を含む）との混合液
を濃縮する場合の循環水温度及び加熱蒸気温度を記録し
た曲線図である。この実験例では、早く濃縮するため便
宜上原液の補給を停止している。水と洗浄剤との混合液
の場合には、水の一部分は油水（Ｗ／Ｏ）エマルジョン
になっており、液が濃縮されるに従って蒸発する水が減
少し蒸発しにくくなるが、一方、加熱熱量は一定である
ため、加熱蒸気の温度が上昇していき、図３に示す如く
循環液との温度差である伝熱温度差が拡大することによ
り蒸発量が維持されるが、循環液が一定の濃度以上に濃
縮されて蒸発可能な水が一定量以下になると、温度差を
拡大しても水の蒸発だけで供給される熱量を吸収できな
くなり、図４に示す如く蒸発量が低下すると共に、循環
水の温度が上昇する。特に水と切削油との混合物の場合
には、水の一部は油水エマルジョンになっているため、
油と分離している水が蒸発して無くなった段階で急に蒸
発速度が落ち、図２のＡ部分に示す如く循環水の温度は
急激に上昇する。このような温度上昇を検出して濃縮液
を排出すれば、濃縮液の濃度を制御できることになる。FIG. 2 is a curve diagram in which the circulating water temperature and the heating steam temperature are recorded in the case of concentrating a mixed liquid of water and a high-boiling alcohol detergent (including a surfactant) as a stock solution in the apparatus of FIG. Is. In this experimental example, the stock solution replenishment is stopped for the sake of convenience in order to concentrate quickly. In the case of a mixed liquid of water and a detergent, a part of the water is an oil-water (W / O) emulsion, and as the liquid is concentrated, the amount of water that evaporates decreases and it becomes difficult to evaporate. Since the amount of heat is constant, the temperature of the heated steam rises, and the heat transfer temperature difference, which is the temperature difference with the circulating liquid, increases as shown in FIG. When the amount of water that has been concentrated to a certain level or more and can be evaporated becomes less than a certain amount, even if the temperature difference is increased, it is not possible to absorb the amount of heat supplied only by the evaporation of water, and the amount of evaporation decreases as shown in FIG. At the same time, the temperature of the circulating water rises. Especially in the case of a mixture of water and cutting oil, part of the water is an oil-water emulsion,
At the stage where the water separated from the oil has evaporated and disappeared, the evaporation rate suddenly decreases and the temperature of the circulating water rises sharply as shown in part A of FIG. By detecting such temperature rise and discharging the concentrated liquid, the concentration of the concentrated liquid can be controlled.
【００１５】次に、流量演算による濃度コントロールに
おいて、基準とした濃度より原液の濃度が低下した場合
には、循環液の濃度が下がり、電動弁４が開いて低い濃
度の循環液を排出してしまうことになる。この問題は、
原液の濃度が低い場合を想定して濃縮倍率を設定するこ
とよってもある期間の原液濃度の変動がなければ解決す
ることができるが、本実施例では、濃縮倍率による電動
弁４の開閉も加えて制御することにより、濃度低下を防
止している。Next, in the concentration control by calculating the flow rate, when the concentration of the stock solution is lower than the reference concentration, the concentration of the circulating fluid is lowered, and the motor-operated valve 4 is opened to discharge the circulating fluid of a low concentration. Will end up. This problem,
Even if the concentration ratio is set assuming that the concentration of the undiluted solution is low, the solution can be solved if the concentration of the undiluted solution does not change during a certain period. The concentration is prevented by reducing the concentration.
【００１６】なお、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。
この方式の装置は、薄膜蒸発、攪拌効果により、エマル
ジヨン化した水分を蒸発し易く、浸管式の装置に較べて
蒸発抵抗が少なくなり効率的に蒸発させることができ
る。そして、或る濃度までは循環液の温度上昇を防止で
き、それから温度上昇が顕著に現れるため、本発明を適
用するのに適した装置である。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。In the above embodiments, the horizontal tube evaporation type evaporative concentrator for circulating the concentrated liquid has been described.
In this type of device, due to the thin film evaporation and stirring effect, the emulsified water can be easily evaporated, and the evaporation resistance is reduced as compared with the immersion type device, so that it can be efficiently evaporated. The temperature rise of the circulating fluid can be prevented up to a certain concentration, and the temperature rise then appears remarkably. Therefore, the apparatus is suitable for applying the present invention. 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、温度検出と
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 the concentrated liquid within a certain concentration range regardless of the concentration of the stock solution by a very simple concentration detection method of temperature detection.
【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】上記装置における加熱蒸気温度及び循環液温度
の変化状態の一例を示す曲線図である。FIG. 2 is a curve diagram showing an example of changes in heating steam temperature and circulating liquid temperature in the above apparatus.
【図３】上記装置における伝熱温度差の変化状態の一例
を示す曲線図である。FIG. 3 is a curve diagram showing an example of a changing state of a heat transfer temperature difference in the above apparatus.
【図４】上記装置における蒸発量の変化状態の一例を示
す曲線図である。FIG. 4 is a curve diagram showing an example of a changing state of the evaporation amount in the above apparatus.
１ 濃縮器 ２ 蒸気発生器（加熱手段） ３ 温度スイッチ（温度検出手段） ４ 電動弁（排出手段） ５ コントローラ（制御手段） 1 Concentrator 2 Steam Generator (Heating Means) 3 Temperature Switch (Temperature Detection Means) 4 Motorized Valve (Discharging Means) 5 Controller (Control Means)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 仁瓶 大造 大阪府大阪市西淀川区御幤島６丁目７番５ 号 株式会社笹倉機械製作所内 (72)発明者 西村 靖史 大阪府大阪市西淀川区御幤島６丁目７番５ 号 株式会社笹倉機械製作所内 (72)発明者 紀平 幸則 大阪府大阪市西淀川区御幤島６丁目７番５ 号 株式会社笹倉機械製作所内 (72)発明者 田原 一見 大阪府大阪市西淀川区御幤島６丁目７番５ 号 株式会社笹倉機械製作所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Daizo Nihei, 6-7-5 Mizoshima, Nishiyodogawa-ku, Osaka-shi, Osaka, Osaka Prefecture Sasakura Machinery Mfg. Co., Ltd. Island 6-7 No. 5 Sasakura Machinery Co., Ltd. (72) Inventor Yukinori Kihira 6-7 No. 5 Misojima, Nishiyodogawa-ku, Osaka City, Osaka (72) Inventor Kazumi Tahara Osaka Prefecture 6-7-5 Mikurajima, Nishiyodogawa-ku, Osaka City Sasakura Machinery Co., Ltd.
Claims (1)
液を一定圧力に保持される濃縮器に導入し、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、 前記濃縮器内の液に一定の加熱熱量を供給する加熱手段
と、前記濃縮液の温度を検出する温度検出手段と、前記
濃縮液を排出する排出手段と、前記温度検出手段が検出
した温度が所定温度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. An undiluted solution consisting of water and a liquid having a boiling point higher than that of water is introduced into a concentrator which is maintained at a constant pressure, and the liquid in the concentrator is heated to evaporate mainly the water, thereby predetermining the liquid. In an evaporative concentrator that is concentrated to a concentration and discharged as a concentrated liquid, heating means for supplying a constant amount of heat for heating to the liquid in the concentrator, temperature detection means for detecting the temperature of the concentrated liquid, and the concentrated liquid. An evaporative concentrating device comprising: a discharging unit configured to discharge the concentrated liquid and a control unit configured to control the discharging unit to discharge the concentrated liquid when the temperature detected by the temperature detecting unit reaches a predetermined temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27782592A JPH06198101A (en) | 1992-09-21 | 1992-09-21 | Evaporating concentrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27782592A JPH06198101A (en) | 1992-09-21 | 1992-09-21 | Evaporating concentrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06198101A true JPH06198101A (en) | 1994-07-19 |
Family
ID=17588792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27782592A Pending JPH06198101A (en) | 1992-09-21 | 1992-09-21 | Evaporating concentrator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06198101A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007216177A (en) * | 2006-02-17 | 2007-08-30 | Sansho Reiki Seisakusho:Kk | Solvent continuously-recovering-and-regenerating apparatus, its operation method and production method of solvent using solvent continuously-recovering-and-regenerating apparatus |
| WO2009147694A1 (en) * | 2008-06-02 | 2009-12-10 | Ｇｏｌｄ Ｌｏｃｋ 株式会社 | Method of concentrating diluted oil and apparatus therefor |
| CN104998432A (en) * | 2015-06-30 | 2015-10-28 | 中复神鹰碳纤维有限责任公司 | Method and device for recovery of low concentration waste oil agent for chemical fibers |
| WO2020075541A1 (en) * | 2018-10-10 | 2020-04-16 | 三菱重工エンジニアリング株式会社 | Reclaiming device, co2 recovery device provided therewith, and reclaiming method |
-
1992
- 1992-09-21 JP JP27782592A patent/JPH06198101A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007216177A (en) * | 2006-02-17 | 2007-08-30 | Sansho Reiki Seisakusho:Kk | Solvent continuously-recovering-and-regenerating apparatus, its operation method and production method of solvent using solvent continuously-recovering-and-regenerating apparatus |
| WO2009147694A1 (en) * | 2008-06-02 | 2009-12-10 | Ｇｏｌｄ Ｌｏｃｋ 株式会社 | Method of concentrating diluted oil and apparatus therefor |
| JP4723002B2 (en) * | 2008-06-02 | 2011-07-13 | Ｇｏｌｄ Ｌｏｃｋ株式会社 | Diluted oil concentration processing equipment |
| CN104998432A (en) * | 2015-06-30 | 2015-10-28 | 中复神鹰碳纤维有限责任公司 | Method and device for recovery of low concentration waste oil agent for chemical fibers |
| WO2020075541A1 (en) * | 2018-10-10 | 2020-04-16 | 三菱重工エンジニアリング株式会社 | Reclaiming device, co2 recovery device provided therewith, and reclaiming method |
| US11045757B2 (en) | 2018-10-10 | 2021-06-29 | Mitsubishi Heavy Industries Engineering, Ltd. | Reclaiming apparatus, CO2 recovery apparatus including the same, and reclaiming method |
| JPWO2020075541A1 (en) * | 2018-10-10 | 2021-09-24 | 三菱重工エンジニアリング株式会社 | Reclaiming device, CO2 recovery device equipped with this, and reclaiming method |
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