JP2005349369A - Seawater desalination apparatus - Google Patents

Seawater desalination apparatus Download PDF

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JP2005349369A
JP2005349369A JP2004175868A JP2004175868A JP2005349369A JP 2005349369 A JP2005349369 A JP 2005349369A JP 2004175868 A JP2004175868 A JP 2004175868A JP 2004175868 A JP2004175868 A JP 2004175868A JP 2005349369 A JP2005349369 A JP 2005349369A
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seawater
temperature
cooling
cold
water
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Kazuo Sugai
和夫 菅井
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Xenesys Inc
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seawater desalination apparatus capable of increasing the amount of produced plain water with enhanced heat efficiency of a condenser by making the temperature of the seawater for cooling as low as possible, and meanwhile, in view of the environmental assurance, capable of maintaining the temperature of warmed residual seawater as low as possible which cannot be vaporized even through a flash evaporation process and discharged out of the seawater desalination apparatus. <P>SOLUTION: The seawater desalination apparatus is so configured that the seawater taken through one water intake is supplied to a heat radiating means 32 while the seawater taken through another water intake is cooled through a cooling means 1, and that the cooled seawater and the seawater discharged by the heat radiating means are both supplied to a condenser 26 to produce the plain water. Therefore, the condenser 26 can perform the condensing operation with the aid of the larger temperature difference, thus increasing the amount of the plain water produced with the enhanced heat efficiency of the condenser 26. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、蒸発法を用いて海水を淡水化する海水淡水化装置に関し、特に排熱を用いた温海水と外部から取水する冷海水とを利用して効率よく淡水化が行える海水淡水化装置に関する。   TECHNICAL FIELD The present invention relates to a seawater desalination apparatus that desalinates seawater using an evaporation method, and in particular, a seawater desalination apparatus that can efficiently desalinate using warm seawater using exhaust heat and cold seawater taken from outside. About.

従来、この種の海水淡水化装置として、特願平２００３−４３２２１２号公報(以下、特許文献１)があり、これを図５に示す。図５は特許文献１に記載する従来の海水淡水化装置の概略構成図である。   Conventionally, as this type of seawater desalination apparatus, there is Japanese Patent Application No. 2003-432212 (hereinafter referred to as Patent Document 1), which is shown in FIG. FIG. 5 is a schematic configuration diagram of a conventional seawater desalination apparatus described in Patent Document 1.

前記図５において従来の海水淡水化装置は、熱交換用媒体として取り入れた海水に対して熱を放出すると共に、温度の高くなった前記海水を排出して海水から淡水を生成する既存の海水淡水化装置として機能する放熱手段５０と、この放熱手段５０と海水の取水管５６および排水管５７との間に介装され、スプレーフラッシュ蒸発式により海水から淡水を生成する海水淡水化装置５１とを備える構成である。
この海水淡水化装置５１は、大氣圧以下の所定圧力に減圧する減圧容器５２と、この減圧容器５２内に配設されて、前記放熱手段５０から排出された海水をスプレーフラッシュ式により略霧状に噴射して水分を一部蒸発させて水蒸気を得る一方、蒸発しなかった残りの海水を排出するフラッシュ蒸発手段５３と、前記フラッシュ蒸発手段５３で得られた水蒸気が海水を冷却水として凝縮されて塩分を含まない水を得る凝縮手段５４とからなり、前記凝縮手段５４で冷却水として使用した海水を前記放熱手段５０に対し前記熱交換用媒体として供給する一方、この放熱手段５０から排出された海水を前記フラッシュ蒸発手段５３に導入する構成である。 In FIG. 5, the conventional seawater desalination apparatus emits heat to the seawater taken as a heat exchange medium, and discharges the seawater whose temperature has been increased to generate freshwater from seawater. And a seawater desalination device 51 that is interposed between the heat dissipation means 50 and the seawater intake pipe 56 and the drain pipe 57 and generates fresh water from the seawater by a spray flash evaporation method. It is the composition provided.
The seawater desalination apparatus 51 includes a decompression container 52 that decompresses to a predetermined pressure equal to or lower than a large pressure, and a seawater discharged from the heat radiating means 50 disposed in the decompression container 52 by a spray flash method. The water vapor is partially evaporated to obtain water vapor, while the flash vaporization means 53 for discharging the remaining seawater that has not evaporated, and the water vapor obtained by the flash vaporization means 53 is condensed with seawater as cooling water. And the condensing means 54 for obtaining salt-free water. Seawater used as cooling water in the condensing means 54 is supplied to the heat radiating means 50 as the heat exchange medium, and is discharged from the heat radiating means 50. In this configuration, fresh seawater is introduced into the flash evaporation means 53.

次に、前記構成に基づく従来の海水淡水化装置の淡水化動作について説明する。取水管５６から取水された海水は、前記凝縮手段５４に供給されて前記フラッシュ蒸発手段５３からの蒸気を凝縮させて熱回収し、取水した時よりも高い温度の温海水となっている。この熱回収した温海水は、前記放熱手段５０に導入されて再度熱回収をするので、前記放熱手段５０に導入される時よりもさらに高い温度の温海水となって前記フラッシュ蒸発手段５３に供給される。この温海水は、前記フラッシュ蒸発手段５３で蒸気となった後に前記凝縮手段５４で塩分を含まない水に凝縮されて淡水化し、前記フラッシュ蒸発手段５３で蒸発しきれなかった温海水の一部は前記排水管５７を通って海へ排出される。
このように、前記放熱手段５０での使用の間に生じる海水の温度差を利用することで、フラッシュ蒸発手段５３に導入される海水温度を高めて、このフラッシュ蒸発手段５３での蒸発量が増加するような状態を得ることにより、海水の淡水化が効率よく行えるようになっている。また、放熱手段５０で熱を回収した後に外部に捨てられていた温海水の熱を海水淡水化に利用することで、前記フラッシュ蒸発手段５３で蒸発しきれず排出される使用済海水の温度を下げることができ、環境への影響を抑えることもできる。 Next, the desalination operation of the conventional seawater desalination apparatus based on the above configuration will be described. Seawater taken from the intake pipe 56 is supplied to the condensing means 54 to condense the steam from the flash evaporating means 53, recover heat, and becomes warm seawater at a higher temperature than when the water is taken. Since the heat-recovered warm seawater is introduced into the heat radiating means 50 and heat is collected again, it is supplied to the flash evaporation means 53 as warm seawater at a higher temperature than when it is introduced into the heat radiating means 50. Is done. The warm seawater is converted into steam by the flash evaporation means 53 and then condensed into water containing no salt by the condensation means 54 to be desalinated, and a part of the warm seawater that could not be evaporated by the flash evaporation means 53 is obtained. It is discharged to the sea through the drain pipe 57.
Thus, by utilizing the temperature difference of the seawater generated during use in the heat radiating means 50, the seawater temperature introduced into the flash evaporation means 53 is increased, and the amount of evaporation in the flash evaporation means 53 increases. By obtaining such a state, seawater desalination can be performed efficiently. Moreover, the temperature of the used seawater discharged without being completely evaporated by the flash evaporation means 53 is lowered by utilizing the heat of the warm seawater that has been discarded outside after recovering the heat by the heat radiating means 50 for seawater desalination. Can also reduce the impact on the environment.

また、前記海水淡水化装置５１は、既存の海水淡水化装置である放熱手段５０の稼動に影響を与えることなく海水淡水化が行えるため、前記海水淡水化装置５１および既存の海水淡水化装置である放熱手段５０の各淡水化量を合わせて淡水化量を増加させることができる。また、既存の海水淡水化装置である放熱手段５０と取水管５６および排水管５７との間に介装して前記海水淡水化装置５１を設置できることから、海に対する新たな取水管および排水管の配管工事が不要となるため、別途新たに海水淡水化装置を増設する場合と比べて、工事費用を低く抑えることができる。
特願平２００３−４３２２１２号公報 Moreover, since the seawater desalination apparatus 51 can perform seawater desalination without affecting the operation of the heat dissipating means 50 which is an existing seawater desalination apparatus, the seawater desalination apparatus 51 and the existing seawater desalination apparatus It is possible to increase the desalination amount by combining the desalination amounts of the heat radiation means 50. In addition, since the seawater desalination device 51 can be installed between the heat radiation means 50, which is an existing seawater desalination device, and the intake pipe 56 and the drain pipe 57, a new intake pipe and drain pipe for the sea can be installed. Since piping work is not necessary, the construction cost can be kept lower than when a new seawater desalination device is additionally installed.
Japanese Patent Application No. 2003-432212

従来の海水淡水化装置は以上のように構成されていたことから、放熱手段５０で熱を回収した後に外部に捨てられていた温海水の熱を海水淡水化装置５１に再利用することにより、淡水化量を増加させることができる。   Since the conventional seawater desalination apparatus is configured as described above, by reusing the heat of the warm seawater that has been discarded outside after recovering the heat with the heat radiating means 50, The amount of desalination can be increased.

しかしながら、取水口５６から取水されて凝縮手段５４に供給される冷却用海水の温度および流量は、立地条件や季節等に大きく支配されることがあり、十分に低い温度の海水が得られない場合は凝縮手段の熱効率が下がり、淡水化量が減少するという課題を有する。   However, the temperature and flow rate of the cooling seawater taken from the water intake 56 and supplied to the condensing means 54 may be largely controlled by location conditions, seasons, etc., and seawater having a sufficiently low temperature cannot be obtained. Has the problem that the thermal efficiency of the condensing means decreases and the amount of desalination decreases.

また、海水淡水化装置５１に導入される温海水の温度および流量が放熱手段５０の性能に支配される可能性があることから、フラッシュ蒸発手段５３により蒸発し切れなかった残りの温海水は、温海水自体の熱量と共にこの海水淡水化装置５１の外へ排出されることとなり、環境上悪影響をおよぼすという課題等を有する。   Further, since the temperature and flow rate of the warm seawater introduced into the seawater desalination apparatus 51 may be governed by the performance of the heat radiation means 50, the remaining warm seawater that has not been completely evaporated by the flash evaporation means 53 is It will be discharged | emitted out of this seawater desalination apparatus 51 with the calorie | heat amount of warm seawater itself, and has the subject of having a bad influence on an environment.

本発明は、前記課題を解決するためになされたもので、冷却用海水の温度をできるだけ低くして凝縮手段の熱効率を高めて淡水の生成量を増加でき、また、フラッシュ蒸発により蒸発し切れず海水淡水化装置装置の外へ排出される温海水の温度を環境対策の観点からできるだけ低く調節することができる海水淡水化装置を提供することを目的とする。   The present invention has been made to solve the above-mentioned problems, and can reduce the temperature of the seawater for cooling as much as possible to increase the thermal efficiency of the condensing means to increase the amount of fresh water generated, and it does not evaporate completely by flash evaporation. It aims at providing the seawater desalination apparatus which can adjust the temperature of the warm seawater discharged | emitted out of a seawater desalination apparatus apparatus as low as possible from a viewpoint of an environmental measure.

本発明に係る海水淡水化装置は、熱交換媒体として一の取水口から取り入れた海水に対し熱を放出すると共に、温度の高くなった前記海水を排出する放熱手段と、大氣圧以下の所定圧力に減圧する減圧容器と、この減圧容器に配設されて、前記放熱手段から排出された海水をスプレーフラッシュ式により略霧状に噴射して水分を一部蒸発させて水蒸気を得る一方、蒸発しなかった残りの海水を排出するフラッシュ蒸発手段と、他の取水口から取水した海水を冷却水として使用し、前記フラッシュ蒸発手段で得られた水蒸気を前記冷却水により冷却し凝縮させて塩分を含まない水を得る凝縮手段とを備え、前記放熱手段に対し前記凝縮手段で冷却水として使用した海水を前記熱交換用媒体として供給する一方、前記放熱手段から排出された海水を前記フラシュ蒸発手段に導入して前記凝縮手段で凝縮させて淡水を生成する海水淡水化装置において、前記他の取水口と前記凝縮手段との間に介装され、前記他の取水口から取水された海水を冷却し、前記冷却された冷海水を凝縮手段に対して供給するための冷却手段を備えるものである。   The seawater desalination apparatus according to the present invention releases heat to the seawater taken from one intake as a heat exchange medium, and discharges the seawater at a high temperature, and a predetermined pressure equal to or lower than a large soot pressure. A decompression vessel that decompresses the water, and seawater discharged from the heat radiation means is sprayed in a substantially mist form by a spray flash method to partially evaporate water to obtain water vapor, while evaporating The flash evaporation means that discharges the remaining seawater and the seawater taken from other intakes are used as cooling water, and the water vapor obtained by the flash evaporation means is cooled by the cooling water and condensed to contain salt. The water used as cooling water in the condensing means is supplied to the heat radiating means as the medium for heat exchange, while the seawater discharged from the heat radiating means is provided. In the seawater desalination apparatus, which is introduced into the flash evaporation means and condensed by the condensing means to produce fresh water, it is interposed between the other intake and the condensing means, and water is taken from the other intake. Cooling means for cooling the fresh seawater and supplying the cooled cold seawater to the condensing means.

また、本発明に係る海水淡水化装置は必要に応じて、前記一の取水口から取水した海水と前記冷却手段で冷却された冷海水とを混合させて第一の混合冷海水とし、前記第一の混合冷海水を貯蔵する貯蔵手段と、前記貯蔵手段内の前記第一の混合冷海水の温度を計測する第一の温度計測手段と、前記他の取水口から取水し前記冷却手段で冷却された冷海水と前記一の取水口から取水した海水とのそれぞれの供給量を調節する第一の供給調節手段とを備え、前記計測された第一の混合冷海水の温度と前記凝縮手段に供給される冷却水の目標温度との温度差を前記第一の供給調節手段により調節するものである。   In addition, the seawater desalination apparatus according to the present invention mixes the seawater taken from the one water intake and the cold seawater cooled by the cooling means as necessary to form the first mixed cold seawater, A storage means for storing one mixed cold seawater, a first temperature measurement means for measuring the temperature of the first mixed cold seawater in the storage means, and water taken from the other intake port and cooled by the cooling means A first supply adjusting means for adjusting a supply amount of each of the cooled cold seawater and the seawater taken from the one intake port, the measured temperature of the first mixed cold seawater and the condensation means The temperature difference from the target temperature of the supplied cooling water is adjusted by the first supply adjusting means.

また、本発明に係る海水淡水化装置は必要に応じて、前記凝縮器で冷却水として使用する海水と前記一の取水口から取水した海水とを第二の混合海水とし、前記第二の混合海水を前記放熱手段の熱交換用媒体として供給すると共に、前記第二の混合海水に対して熱が放出され、前記放熱手段から排出される温度の高くなった混合温海水を任意の温度および流量等に調節してフラッシュ蒸発手段へ供給する第二の供給調節手段と、前記大氣圧以下の所定圧力に減圧する減圧容器内には、前記フラッシュ蒸発手段から排出される海水の温度を計測する第二の温度計測手段とを備え、前記計測された温度と目標温度との温度差を前記第二の供給調節手段により調節するものである。   Moreover, the seawater desalination apparatus according to the present invention, if necessary, uses seawater used as cooling water in the condenser and seawater taken from the one intake port as second mixed seawater, and the second mixing seawater. While supplying seawater as a heat exchange medium for the heat dissipating means, heat is released to the second mixed seawater, and the mixed warm seawater at a high temperature discharged from the heat dissipating means has an arbitrary temperature and flow rate. A second supply adjusting means for adjusting the pressure to the flash evaporation means and a decompression vessel for reducing the pressure to a predetermined pressure equal to or lower than the high soot pressure, and a temperature of seawater discharged from the flash evaporation means is measured. And a second temperature measuring means, and a temperature difference between the measured temperature and the target temperature is adjusted by the second supply adjusting means.

また、本発明に係る海水淡水化装置は必要に応じて、前記冷却手段と、前記貯蔵手段、前記第一の温度計測手段および前記第一の供給調節手段からなる冷海水調節手段と、前記第二の供給調節手段および前記第二の温度計測手段からなる温海水調節手段とのうち少なくとも一つの動作条件を監視すると共に、前記凝縮手段に供給する冷却水の目標温度あるいはフラッシュ蒸発手段から排出される海水の目標温度を制御目標値として、前記冷却手段と冷海水調節手段と温海水調節手段とのいずれか少なくとも一つに指令を出力し、前記冷却手段と当該冷海水調節手段と当該温海水調節手段とのうち少なくとも一つを最適に制御する統合制御手段を備えるものである。   Further, the seawater desalination apparatus according to the present invention comprises, as necessary, the cooling means, the cold seawater adjustment means comprising the storage means, the first temperature measurement means and the first supply adjustment means, and the first Monitoring at least one of the operating conditions of the second supply adjusting means and the warm seawater adjusting means comprising the second temperature measuring means, and is discharged from the target temperature of the cooling water supplied to the condensing means or the flash evaporation means. A command is output to at least one of the cooling means, the cold seawater adjusting means, and the warm seawater adjusting means, using the target temperature of the seawater as a control target value, and the cooling means, the cold seawater adjusting means, and the warm seawater An integrated control means for optimally controlling at least one of the adjusting means is provided.

本発明においては、一の取水口から取水された海水を放熱手段に供給すると共に、他の取水口から取水される海水を冷却手段に供給して冷却し、この冷却した海水と放熱手段から排出される海水とが凝縮手段に供給されて淡水を生成するようにしているので、凝縮手段がより大きな温度差で凝縮作用を行えることととなり、凝縮手段の熱効率を高めて淡水の生成量を増加できるという効果を有する。   In the present invention, seawater taken from one water intake is supplied to the heat dissipating means, and seawater taken from the other water intake is supplied to the cooling means for cooling, and discharged from the cooled seawater and the heat dissipating means. Since the seawater is supplied to the condensing means to produce fresh water, the condensing means can perform the condensing action with a larger temperature difference, increasing the thermal efficiency of the condensing means and increasing the amount of fresh water produced. It has the effect of being able to.

また、本発明においては、一の取水口から取水した海水と他の取水口から取水し冷却手段で冷却された冷海水のそれぞれの供給量を第一の供給調節手段により調節して、それらを混合させて混合冷海水として貯蔵手段に貯蔵し、この貯蔵手段内の混合冷海水の温度を第一の温度計測手段により計測し、この計測された温度と凝縮手段に供給される冷却水の目標温度との温度差を第一の供給調節手段により調節しているので、凝縮手段に供給される冷却水の温度を任意に調節して放熱手段の熱効率および本装置による淡水の生成効率の各効率の調和点を求めて装置全体の熱効率を高めることができることとなり、淡水化の効率および能力を向上させるという効果を有する。   In the present invention, the first supply adjusting means adjusts the supply amount of the seawater taken from one intake and the cold seawater taken from the other intake and cooled by the cooling means. The mixed cold seawater is mixed and stored in the storage means, the temperature of the mixed cold seawater in the storage means is measured by the first temperature measuring means, and the measured temperature and the target of the cooling water supplied to the condensing means are measured. Since the temperature difference from the temperature is adjusted by the first supply adjusting means, the temperature of the cooling water supplied to the condensing means is arbitrarily adjusted, and each efficiency of the thermal efficiency of the heat dissipating means and the efficiency of fresh water generation by this device Therefore, it is possible to increase the thermal efficiency of the entire apparatus by obtaining the harmony point, and to improve the efficiency and capacity of desalination.

また、本発明においては、放熱手段から排出される温度の高くなった温海水を任意の温度および流量等に第二の供給調節手段により調節してフラッシュ蒸発手段へ供給し、このフラッシュ蒸発手段から排出される海水の温度を第二の温度計測手段により計測して、この計測された温度と目標温度との温度差を前記第二の供給調節手段により調節しているので、フラッシュ蒸発手段で蒸発仕切れず排出される温海水の温度を最適値あるいは最小値に設定することができ、環境への影響が軽減できるという効果を有する。   Further, in the present invention, the warm seawater having a high temperature discharged from the heat radiating means is adjusted to an arbitrary temperature and flow rate by the second supply adjusting means and supplied to the flash evaporation means. The temperature of the discharged seawater is measured by the second temperature measuring means, and the temperature difference between the measured temperature and the target temperature is adjusted by the second supply adjusting means. The temperature of the warm seawater discharged without partitioning can be set to the optimum value or the minimum value, and the effect on the environment can be reduced.

また、本発明においては、冷却手段、冷海水調節手段および温海水調節手段の少なくとも一つの動作条件をリアルタイムで監視すると共に、前記凝縮手段に供給される冷却水の目標温度あるいはフラッシュ蒸発手段から排出される海水の目標温度を制御目標値として持つ統合制御手段を備えているので、この統合制御手段により制御目標値と前記第一の温度計測手段および前記第二の温度計測手段によりそれぞれ計測される前記第一の混合冷海水の温度およびフラッシュ蒸発手段から排出される海水の温度との差をそれぞれ求めて、この差を冷却手段、冷海水調節手段および温海水調節手段のいずれか少なくとも一つに指令を出すことにより、前記第一の混合冷海水の温度とフラッシュ蒸発手段から排出される海水の温度を各々最適に制御できることとなり、淡水化の効率を最大に高めると共に環境への影響も軽減できるという効果を有する。   Further, in the present invention, at least one operating condition of the cooling means, the cold seawater adjusting means and the warm seawater adjusting means is monitored in real time, and is discharged from the target temperature of the cooling water supplied to the condensing means or the flash evaporation means. Since the integrated control means having the target temperature of the seawater to be used as the control target value is provided, the integrated control means measures the control target value and the first temperature measurement means and the second temperature measurement means, respectively. A difference between the temperature of the first mixed cold seawater and the temperature of the seawater discharged from the flash evaporation means is obtained, and this difference is set to at least one of the cooling means, the cold seawater adjusting means, and the warm seawater adjusting means. By issuing a command, the temperature of the first mixed cold seawater and the temperature of the seawater discharged from the flash evaporation means can be optimally controlled. Becomes Rukoto has the effect of the efficiency of the desalination may reduce environmental impact enhances the maximum.

(本発明の第一の実施形態)
以下、本発明の第一の実施形態に係る海水淡水化装置を図１ないし図４に基づいて説明する。図１は本実施形態に係る海水淡水化装置の全体構成、図２は本実施形態に係る冷却手段および冷海水生成手段の構成、図３は本実施形態に係る温海水生成手段の構成、図４は本実施形態に係る統合制御手段の構成を示す。 (First embodiment of the present invention)
Hereinafter, a seawater desalination apparatus according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 4. 1 is an overall configuration of a seawater desalination apparatus according to this embodiment, FIG. 2 is a configuration of cooling means and cold seawater generation means according to this embodiment, and FIG. 3 is a configuration of warm seawater generation means according to this embodiment. 4 shows the configuration of the integrated control means according to the present embodiment.

前記各図において本実施形態に係る海水淡水化装置は、熱交換媒体として一の取水口３０ａから取り入れた海水に対して熱を放出すると共に、温度の高くなった前記海水を排出して海水から淡水を生成する海水淡水化装置として機能する放熱手段３２と、前記排出された海水をスプレーフラッシュ式により略霧状に噴射して水分を一部蒸発させて水蒸気を得る一方、蒸発しなかった残りの海水を排出するフラッシュ蒸発手段２３と、他の取水口３０ｂから取水した海水を冷却水として使用して前記フラッシュ蒸発手段２３で得られた水蒸気をこの冷却水により冷却し凝縮させて塩分を含まない水を得る凝縮手段２６とを備え、前記放熱手段３２に対し前記凝縮手段２６で冷却水として使用した海水を前記熱交換用媒体として供給する一方、前記放熱手段３２から排出された海水を前記フラッシュ蒸発手段２３に導入するような基本構成である。   In each of the drawings, the seawater desalination apparatus according to the present embodiment releases heat to the seawater taken from one intake 30a as a heat exchange medium, and discharges the seawater having a high temperature from the seawater. The heat radiation means 32 functioning as a seawater desalination device for producing fresh water, and the discharged sea water is sprayed in a substantially mist form to partially evaporate water to obtain water vapor, while the remainder that has not evaporated The flash evaporation means 23 for discharging the seawater and the seawater taken from the other intake port 30b are used as cooling water, and the water vapor obtained by the flash evaporation means 23 is cooled by this cooling water and condensed to contain salt. Condensation means 26 for obtaining water, and supplying seawater used as cooling water in the condensation means 26 to the heat radiating means 32 as the heat exchange medium, Seawater discharged from the heat dissipating means 32 is a basic configuration is introduced into the flash evaporation means 23.

この基本構成に加え、本実施形態に係る海水淡水化装置は、他の取水口３０ｂから取水した海水を冷却して冷海水とする冷却手段１と、前記凝縮手段２６へ供給される冷却水を任意の温度に調節して生成することができる冷海水生成手段１０１と、フラッシュ蒸発手段２３で蒸発仕切れず排出される温海水の温度を最適値あるいは最小値に設定することができる温海水生成手段１０２と、冷却手段１、前記凝縮手段２６、冷海水生成手段１０１および温海水生成手段１０２を各々最適に自動制御する統合制御手段１５とを備える構成である。   In addition to this basic configuration, the seawater desalination apparatus according to the present embodiment uses the cooling means 1 that cools seawater taken from other intakes 30b to form cold seawater, and the cooling water supplied to the condensing means 26. Cold seawater generating means 101 that can be generated by adjusting to an arbitrary temperature, and warm seawater generating means that can set the temperature of the warm seawater discharged without flashing by the flash evaporation means 23 to an optimum value or a minimum value 102 and the integrated control means 15 which each optimally automatically controls the cooling means 1, the condensing means 26, the cold seawater generating means 101, and the warm seawater generating means 102.

また、前記フラッシュ蒸発手段２３および前記凝縮手段２６は、密閉容器からなる負圧状態とされる減圧容器２２に収納されて構成される。前記減圧容器２２は、前記フラッシュ蒸発手段２３で得られた水蒸気の気液を分離する霧取り手段２５と、前記凝縮手段２６で凝縮された淡水を取り出す淡水取り出し用ポンプ２７と、この減圧容器２２を大氣圧以下の所定圧力に減圧してフラッシュ蒸発を促進させる真空手段２８と、この真空手段２８と前記凝縮手段２６との間に介装されて、前記凝縮手段２６で凝縮されなかった水蒸気と一の取水口３０ａから取り入れた海水との熱交換を行う前段熱交換手段２９と、蒸発仕切れなかった温海水を排出する温海水排出用ポンプ２４とを備えている。
前記冷海水生成手段１０１は、一の取水口３０ａから取水した海水及び他の取水口３０ｂから取水した海水が冷却手段１により冷却されて生成される冷海水の各供給量を調節する供給調節手段３ａ、３ｂと、それぞれを混合させて貯蔵するための冷海水調合タンク４と、前記冷海水調合タンク４の混合冷海水の温度を計測する冷海水用温度計測手段７と、前記冷海水調合タンク４内の混合冷海水の抜気を行うための抜気手段６と、前記冷海水用温度計測手段７の出力に基づいて供給調節手段３ａ、３ｂにより供給量を調節して前記混合冷海水の温度を制御する冷海水生成手段本体５と、前記冷海水調合タンク４で生成された前記混合冷海水を前記凝縮手段２６へ送り込むための混合冷海水用供給ポンプ８とを備える構成である。 The flash evaporating means 23 and the condensing means 26 are configured to be housed in a decompression container 22 that is a negative pressure state made of an airtight container. The decompression vessel 22 includes a mist removing means 25 for separating the vapor-liquid vapor obtained by the flash evaporation means 23, a fresh water take-out pump 27 for taking out fresh water condensed by the condensation means 26, and the decompression vessel 22. A vacuum means 28 for reducing flash pressure to a predetermined pressure equal to or lower than a large soot pressure to promote flash evaporation, and water vapor interposed between the vacuum means 28 and the condensing means 26 and not condensed by the condensing means 26 A pre-stage heat exchanging means 29 for exchanging heat with seawater taken from one intake 30a and a warm seawater discharge pump 24 for discharging warm seawater that has not been partitioned off by evaporation are provided.
The cold seawater generating means 101 is a supply adjusting means for adjusting each supply amount of the cold seawater generated by cooling the seawater taken from one intake 30a and the seawater taken from the other intake 30b by the cooling means 1. 3a, 3b, a cold seawater preparation tank 4 for mixing and storing them, a temperature measurement means 7 for cold seawater for measuring the temperature of the mixed cold seawater in the cold seawater preparation tank 4, and the cold seawater preparation tank 4 is used for extracting the mixed cold seawater, and based on the output of the cold seawater temperature measuring means 7, the supply amount is adjusted by the supply adjusting means 3 a, 3 b to adjust the amount of the mixed cold seawater. The structure includes a cold seawater generating means main body 5 for controlling temperature and a mixed cold seawater supply pump 8 for feeding the mixed cold seawater generated in the cold seawater preparation tank 4 to the condensing means 26.

前記温海水生成手段１０２は、フラッシュ蒸発手段２３へ供給される混合温海水を任意
の流量等に調節する混合温海水用供給調節手段１３と、前記減圧容器２２に設けられた前記フラッシュ蒸発手段２３からの排出海水の温度を計測する排出温海水用温度計測手段１４と、前記排出温海水用温度計測手段１４の出力に基づいて前記混合温海水用供給調節手段１３により混合温海水の供給量を調節して前記排出海水の温度を制御する温海水生成手段本体１１とから構成される。前記混合温海水は、前記放熱手段３２から排出される熱回収により温度の高くなった温海水と、前記放熱手段３２において蒸発仕切れなかった温海水の一部である。 The warm seawater generating means 102 includes a mixed warm seawater supply adjusting means 13 for adjusting the mixed warm seawater supplied to the flash evaporation means 23 to an arbitrary flow rate and the like, and the flash evaporation means 23 provided in the decompression vessel 22. Based on the output of the discharge warm seawater temperature measurement means 14 for measuring the temperature of the discharge seawater from the seawater and the output of the discharge warm seawater temperature measurement means 14, the supply amount of the mixed warm seawater is controlled by the mixed warm seawater supply adjusting means 13. It is comprised from the warm seawater production | generation means main body 11 which adjusts and controls the temperature of the said discharge seawater. The mixed warm seawater is a part of the warm seawater whose temperature has been increased by heat recovery discharged from the heat dissipating means 32 and the warm seawater that has not been partitioned by the heat dissipating means 32.

前記統合制御手段１５は、前記冷却手段１、前記冷海水生成手段１０１、前記温海水生
成手段１０２の各圧力、温度、流量等の動作条件をリアルタイムで監視し、前記凝縮手段２６を含むシステム全体を自動制御するためのものである。具体的には、前記凝縮手段２６に供給する冷却水の目標温度又はフラッシュ蒸発手段２３から排出される海水の目標温度を制御目標値として、前記冷却手段１、冷海水生成手段本体５、温海水生成手段本体１１の各々に指令を出し、各機能を最適に自動制御する。 The integrated control means 15 monitors the operating conditions such as pressure, temperature, flow rate, etc. of the cooling means 1, the cold seawater generating means 101, and the warm seawater generating means 102 in real time, and includes the condensing means 26. Is for automatic control. Specifically, the target temperature of the cooling water supplied to the condensing means 26 or the target temperature of the seawater discharged from the flash evaporation means 23 is set as a control target value, and the cooling means 1, the cold seawater generating means body 5, the warm seawater. A command is issued to each of the generation means main body 11 to automatically and optimally control each function.

次に、前記構成に基づく本実施形態に係る海水淡水化装置の動作について説明する。一の取水口３０ａから取水した海水及び他の取水口３０ｂから取水した海水の温度を３４℃と仮定して説明する。前記他の取水口３０ｂから取水した海水は、海水用供給ポンプ３１ｂにより前記冷却手段１に供給され、この冷却手段１により冷却されて２９℃の冷海水となる。この冷却手段１により冷却された冷海水は、前記一の取水口３０ａから取水した海水と共に、各々冷海水用供給ポンプ２及び海水用供給ポンプ３１ａにより供給されて、各供給量を調節する供給調節手段３ａ、３ｂを経て、前記冷海水調合タンク４に混合冷海水として貯蔵される。この冷海水調合タンク４で生成された混合冷海水は、前記供給調節手段３ａ、３ｂにより温度が３０℃の混合冷海水となって、混合冷海水用供給ポンプ８により前記凝縮手段２６へ送り込まれる。   Next, the operation of the seawater desalination apparatus according to this embodiment based on the above configuration will be described. Description will be made assuming that the temperature of the seawater taken from one intake 30a and the seawater taken from the other intake 30b is 34 ° C. Seawater taken from the other intake port 30b is supplied to the cooling means 1 by a seawater supply pump 31b, and cooled by the cooling means 1 to become cold seawater at 29 ° C. The cold seawater cooled by the cooling means 1 is supplied by the cold seawater supply pump 2 and the seawater supply pump 31a together with the seawater taken from the one intake port 30a, and the supply adjustment for adjusting each supply amount The mixed cold seawater is stored in the cold seawater preparation tank 4 through the means 3a and 3b. The mixed cold seawater generated in the cold seawater preparation tank 4 is mixed cold seawater having a temperature of 30 ° C. by the supply adjusting means 3a and 3b, and sent to the condensing means 26 by the mixed cold seawater supply pump 8. .

前記混合冷海水の温度は、既存の海水淡水化装置である放熱手段３２および本実施形態に係る海水淡水化装置の各能力と、この放熱手段３２で生成される淡水量および本実施形態に係る海水淡水化装置により生成される淡水量の比率に影響を及ぼす重要なパラメータであることがわかっている。このことから、供給調節手段３ａ、３ｂは、前記の取水口３０ａから取水した海水および前記冷却手段１により冷却された冷海水の各供給量を調節することにより、前記混合冷海水の温度を設定することができる。
前記凝縮手段２６は、例えばプレート式熱交換器で構成した場合を仮定すると、前記フラッシュ蒸発手段２３で得られた水蒸気が前記混合冷海水により凝縮され、この混合冷海水の温度が、入口温度３０℃に対して温度が７℃上昇し、出口では３７℃の海水としている。この海水は、前記真空手段２８の前段熱交換器２９により熱回収後に排出された海水と混合された後、混合海水となって放熱手段３２へ海水用供給ポンプ１６により送り込まれる。その後、前記放熱手段３２の熱交換用媒体として供給されると共に、この放熱手段３２においてこの混合海水は、熱が放出され、温度を高くして排出される。例えば、前記放熱手段３２がシェル・アンド・チューブ式熱交換器の場合、混合海水は、入口温度３７℃に対して温度が８．５℃上昇し、出口では４５．５℃の温海水となる。 The temperature of the mixed cold seawater is related to each capability of the heat dissipating means 32 which is an existing seawater desalination apparatus and the seawater desalination apparatus according to the present embodiment, the amount of fresh water generated by the heat dissipating means 32 and the present embodiment. It has been found that this is an important parameter that affects the ratio of the amount of fresh water produced by seawater desalination equipment. From this, the supply adjusting means 3a, 3b sets the temperature of the mixed cold seawater by adjusting each supply amount of the seawater taken from the water intake 30a and the cold seawater cooled by the cooling means 1. can do.
Assuming that the condensing means 26 is constituted by, for example, a plate heat exchanger, the water vapor obtained by the flash evaporating means 23 is condensed by the mixed cold seawater. The temperature rises by 7 ° C with respect to ° C, and the seawater is 37 ° C at the exit. This seawater is mixed with seawater discharged after heat recovery by the pre-stage heat exchanger 29 of the vacuum means 28, then becomes mixed seawater and fed into the heat radiation means 32 by the seawater supply pump 16. Thereafter, the mixed seawater is supplied as a heat exchange medium of the heat dissipating means 32, and the mixed seawater is discharged in this heat dissipating means 32 at a high temperature. For example, when the heat radiating means 32 is a shell-and-tube heat exchanger, the temperature of the mixed seawater rises by 8.5 ° C with respect to the inlet temperature of 37 ° C, and becomes hot seawater of 45.5 ° C at the outlet. .

この温海水は、前記放熱手段３２において蒸発仕切れなかった温海水の一部と共に、各々温海水用供給ポンプ２１ａ及び２１ｂにより前記混合温海水用供給調節手段１３へ送り込まれた後、この混合温海水用供給調節手段１３により流量等が調節されて前記フラッシュ蒸発手段２３へ供給される。このフラッシュ蒸発手段２３では、前記温海水がスプレーフラッシュ式により略霧状に噴射して水分を一部蒸発させ、水蒸気が得られる。ここでは、温海水の入口温度４５．５℃に対して温度が約７．５℃降下し、水蒸気の温度は３８℃となっている。一方、蒸発しなかった残りの海水は、水蒸気の温度とほぼ同じで、３８℃程度となっている。この程度の温度であれば、環境上の問題はなく、装置外へ排出してもよい。   The warm seawater is sent to the mixed warm seawater supply adjusting means 13 by the warm seawater supply pumps 21a and 21b together with a part of the warm seawater that is not vaporized by the heat radiating means 32, and then the mixed warm seawater. The flow rate and the like are adjusted by the supply adjusting means 13 and supplied to the flash evaporation means 23. In this flash evaporation means 23, the warm seawater is sprayed in a substantially mist form by a spray flash method to partially evaporate water, thereby obtaining water vapor. Here, the temperature falls by about 7.5 ° C. with respect to the inlet temperature of warm seawater of 45.5 ° C., and the temperature of the water vapor is 38 ° C. On the other hand, the remaining seawater that has not evaporated is substantially the same as the temperature of the water vapor, and is about 38 ° C. If it is this temperature, there is no environmental problem and it may be discharged out of the apparatus.

以上の制御構成により、前記凝縮手段２６へ供給される冷却水を任意の温度に調節することができ、淡水化の効率および能力が向上し、また、フラッシュ蒸発手段２３で蒸発仕切れず排出される温海水の温度を最適値あるいは最小値に設定することができ、環境への影響が軽減できる。   With the above control configuration, the cooling water supplied to the condensing means 26 can be adjusted to an arbitrary temperature, the desalination efficiency and capacity are improved, and the flash evaporating means 23 is discharged without an evaporation partition. The temperature of the warm seawater can be set to the optimum value or the minimum value, and the influence on the environment can be reduced.

また、上記動作説明中で特定した六つの温度、すなわち前記冷却手段１により冷却された冷海水の温度２９℃(T1)、前記凝縮手段２６へ送り込まれる混合冷海水の温度３０℃(T2)、前記凝縮手段２６の出口における混合冷海水の温度３７℃(T3)、前記放熱手段３２の出口における温海水の温度４５．５℃(T4)、前記フラッシュ蒸発手段２３における水蒸気の温度３８℃(T5)、前記フラッシュ蒸発手段２３で蒸発しなかった残りの海水の温度３８℃程度(T6)に着目すると、T1＜T2＜T3＜T5＝T6＜T4の大小関係が成立するように構成できていることがわかる。   The six temperatures specified in the above description of the operation, that is, the temperature of the cold seawater cooled by the cooling means 1 29 ° C. (T1), the temperature of the mixed cold seawater fed to the condensing means 26 30 ° C. (T2), The temperature of the mixed cold seawater at the outlet of the condensing means 26 is 37 ° C. (T3), the temperature of the warm seawater at the outlet of the heat radiating means 32 is 45.5 ° C. (T4), and the temperature of the water vapor in the flash evaporation means 23 is 38 ° C. (T5). ), Paying attention to the temperature (T6) of the remaining seawater that has not evaporated by the flash evaporation means 23, it can be configured such that the magnitude relationship of T1 <T2 <T3 <T5 = T6 <T4 is established. I understand that.

この大小関係が得られる理由は以上の説明からわかるように、前記取水口３０ｂから取水した海水の温度３４℃を前記冷却手段１により冷却することで２９℃に降下させたためである。このように本実施形態に係る海水淡水化装置は、海水淡水化装置全体の熱効率および淡水化効率を支配するパラメータとなり得る温度に関して、上記の温度構成にすることで装置全体の熱効率および淡水化効率を向上させることができる。   The reason why this magnitude relationship is obtained is that, as can be seen from the above description, the temperature of seawater taken from the water intake 30b is lowered to 29 ° C. by being cooled by the cooling means 1. As described above, the seawater desalination apparatus according to the present embodiment has the above-described temperature configuration with respect to the temperature that can be a parameter governing the thermal efficiency and the desalination efficiency of the entire seawater desalination apparatus. Can be improved.

(本発明の他の実施形態)
前記図１に記載の第一の実施形態においては、統合制御手段１５が冷却手段１、冷海水生成手段本体５および温海水生成手段本体１１をいずれも制御する構成としたが、冷却手段１、冷海水生成手段本体５(冷海水生成手段１０１)および温海水生成手段本体１１(温海水生成手段１０２)のいずれか少なくとも一つを特定し、または任意に選択して統合制御手段１５により制御する構成とすることもできる。 (Other embodiments of the present invention)
In the first embodiment described in FIG. 1, the integrated control unit 15 controls the cooling unit 1, the cold seawater generation unit main body 5, and the warm seawater generation unit main body 11. At least one of the cold seawater generating means main body 5 (cold seawater generating means 101) and the warm seawater generating means main body 11 (warm seawater generating means 102) is specified or arbitrarily selected and controlled by the integrated control means 15. It can also be configured.

また、前記第一の実施形態においては、冷却手段１、冷海水生成手段１０１および温海水生成手段１０２を備える構成としたが、取水口３０ａから海水の供給を受ける放熱手段３２と取水口３０ｂとの間に冷却手段１のみを設けて構成することもできる。さらに、他の実施形態に係る海水淡水化装置として、放熱手段３２および冷却手段１の構成に、冷海水生成手段１０１または温海水生成手段１０２のいずれか一つを加えて構成することもできる。   Moreover, in said 1st embodiment, although it was set as the structure provided with the cooling means 1, the cold seawater production | generation means 101, and the warm seawater production | generation means 102, the thermal radiation means 32 and the water intake 30b which receive supply of seawater from the water intake 30a, It is also possible to provide only the cooling means 1 between them. Furthermore, as a seawater desalination apparatus according to another embodiment, any one of the cold seawater generation means 101 and the warm seawater generation means 102 can be added to the configuration of the heat dissipation means 32 and the cooling means 1.

本発明の第一の実施形態に係る海水淡水化装置の全体ブロック構成図である。It is a whole block block diagram of the seawater desalination apparatus which concerns on 1st embodiment of this invention. 図１記載の海水淡水化装置における冷却手段および冷海水生成手段のブロック構成図である。It is a block block diagram of the cooling means and cold seawater production | generation means in the seawater desalination apparatus of FIG. 図１記載の海水淡水化装置における温海水生成手段のブロック構成図である。It is a block block diagram of the warm seawater production | generation means in the seawater desalination apparatus of FIG. 図１記載の海水淡水化装置における統合制御手段のブロック構成図である。It is a block block diagram of the integrated control means in the seawater desalination apparatus of FIG. 従来の海水淡水化装置の概略構成図である。It is a schematic block diagram of the conventional seawater desalination apparatus.

符号の説明Explanation of symbols

１ 冷却手段
２ 冷海水用供給ポンプ
３ａ，３ｂ 供給調節手段
４ 冷海水調合タンク
５ 冷海水生成手段本体
６ 抜気手段
７ 冷海水用温度計測手段
８ 混合冷海水用供給ポンプ
１１ 温海水生成手段本体
１２ 温海水用供給ポンプ
１３ 混合温海水用供給調節手段
１４ 排出温海水用温度計測手段
１５ 統合制御手段
１６ 海水用供給ポンプ
２１ａ，２１ｂ 温海水用供給ポンプ
２２，５２ 減圧容器
２３，５３ フラッシュ蒸発手段
２４ 温海水排出用ポンプ
２５，５５ 霧取り手段
２６，５４ 凝縮手段
２７ 淡水取り出し用ポンプ
２８ 真空手段
２９ 前段熱交換手段
３０ａ，３０ｂ 取水口
３１ａ，３１ｂ 海水用供給ポンプ
３２，５０ 放熱手段
５１ 海水淡水化装置
５６ 取水管
５７ 排水管
１０１ 冷海水生成手段
１０２ 温海水生成手段
DESCRIPTION OF SYMBOLS 1 Cooling means 2 Supply pump 3a, 3b for cold seawater Supply adjustment means 4 Cold seawater preparation tank 5 Cold seawater production | generation means main body 6 Deaeration means 7 Cold seawater temperature measurement means 8 Mixed cold seawater supply pump 11 Warm seawater production means main body 12 Supply pump for warm seawater 13 Supply control means for mixed warm seawater 14 Temperature measurement means for discharged warm seawater 15 Integrated control means 16 Supply pumps for seawater 21a, 21b Supply pumps for warm seawater 22, 52 Decompression vessel 23, 53 Flash evaporation means 24 Warm seawater discharge pumps 25, 55 Condensation means 26, 54 Condensation means 27 Fresh water extraction pump 28 Vacuum means 29 Pre-stage heat exchange means 30a, 30b Intake ports 31a, 31b Seawater supply pumps 32, 50 Radiation means 51 Seawater fresh water Generator 56 Intake pipe 57 Drain pipe 101 Cold seawater generating means 102 Hot seawater generating means

Claims (4)

熱交換媒体として一の取水口から取り入れた海水に対し熱を放出すると共に、温度の高くなった前記海水を排出する放熱手段と、大氣圧以下の所定圧力に減圧する減圧容器と、この減圧容器に配設されて、前記放熱手段から排出された海水をスプレーフラッシュ式により略霧状に噴射して水分を一部蒸発させて水蒸気を得る一方、蒸発しなかった残りの海水を排出するフラッシュ蒸発手段と、他の取水口から取水した海水を冷却水として使用し、前記フラッシュ蒸発手段で得られた水蒸気を当該冷却水により冷却し凝縮させて塩分を含まない水を得る凝縮手段とを備え、前記放熱手段に対し前記凝縮手段で冷却水として使用した海水を前記熱交換用媒体として供給する一方、前記放熱手段から排出された海水を前記フラッシュ蒸発手段に導入して前記凝縮手段で凝縮させて淡水を生成する海水淡水化装置において、
前記他の取水口と前記凝縮手段との間に介装され、当該他の取水口から取水された海水を冷却し、当該冷却された冷海水を凝縮手段に対して供給するための冷却手段を備えたことを
特徴とする海水淡水化装置。 A heat dissipating means for discharging heat to the seawater taken from one intake port as a heat exchange medium, and discharging the seawater at a high temperature, a decompression container for decompressing to a predetermined pressure equal to or less than a high pressure, and the decompression container The flash evaporation which is disposed in the seawater discharged from the heat dissipating means is sprayed in a substantially mist form by a spray flash method to partially evaporate water to obtain water vapor, while discharging the remaining seawater that has not evaporated And a condensing unit that uses seawater taken from another intake as cooling water, cools the water vapor obtained by the flash evaporation unit with the cooling water, and condenses to obtain water that does not contain salt. Seawater used as cooling water by the condensing means is supplied as the heat exchange medium to the heat radiating means, while seawater discharged from the heat radiating means is introduced into the flash evaporation means. In seawater desalination apparatus for generating fresh water is condensed in the condensing means Te,
A cooling means interposed between the other water intake and the condensing means, for cooling seawater taken from the other water intake and supplying the cooled cold seawater to the condensing means; A seawater desalination system characterized by comprising. 前記請求項１に記載の海水淡水化装置において、
前記一の取水口から取水した海水と前記冷却手段で冷却された冷海水とを混合させて第一の混合冷海水とし、当該第一の混合冷海水を貯蔵する貯蔵手段と、
前記貯蔵手段内の前記第一の混合冷海水の温度を計測する第一の温度計測手段と、
前記他の取水口から取水し前記冷却手段で冷却された冷海水および前記一の取水口から取水した海水のそれぞれの貯蔵手段への供給量を調節する第一の供給調節手段とを備え、
前記計測された第一の混合冷海水の温度および前記凝縮手段に供給される冷却水の目標温度の温度差を前記第一の供給調節手段により調節することを
特徴とする海水淡水化装置。 In the seawater desalination apparatus according to claim 1,
A storage means for storing the first mixed cold seawater by mixing the seawater taken from the one water intake and the cold seawater cooled by the cooling means into the first mixed cold seawater;
First temperature measuring means for measuring the temperature of the first mixed cold seawater in the storage means;
A first supply adjusting means for adjusting a supply amount to each storage means of cold seawater taken from the other intake and cooled by the cooling means and seawater taken from the one intake;
The seawater desalination apparatus, wherein the temperature difference between the measured temperature of the first mixed cold seawater and the target temperature of the cooling water supplied to the condensing means is adjusted by the first supply adjusting means. 前記請求項１または２に記載の海水淡水化装置において、
前記凝縮手段で冷却水として使用した海水と前記一の取水口から取水した海水とを混合して第二の混合海水とし、当該第二の混合海水を前記放熱手段の熱交換用媒体として供給すると共に、当該第二の混合海水に対して熱が放出され、当該放熱手段から排出される温度の高くなった混合温海水を任意の温度および流量等に調節して前記フラッシュ蒸発手段へ供給する第二の供給調節手段と、
前記減圧容器内に配設され、前記フラッシュ蒸発手段から排出される海水の温度を計測する第二の温度計測手段とを備え、
前記計測された温度および目標温度の温度差を前記第二の供給調節手段により調節することを
特徴とする海水淡水化装置。 In the seawater desalination apparatus according to claim 1 or 2,
Seawater used as cooling water in the condensing means and seawater taken from the one intake port are mixed to form second mixed seawater, and the second mixed seawater is supplied as a heat exchange medium for the heat radiating means. At the same time, heat is released to the second mixed seawater, and the mixed warm seawater whose temperature is discharged from the heat radiating means is adjusted to an arbitrary temperature, flow rate, etc., and supplied to the flash evaporation means. Two supply adjustment means;
A second temperature measuring means disposed in the decompression vessel and measuring the temperature of seawater discharged from the flash evaporation means;
A seawater desalination apparatus, wherein a temperature difference between the measured temperature and a target temperature is adjusted by the second supply adjusting means. 前記請求項１ないし３のいずれかに記載の海水淡水化装置において、
前記冷却手段と、前記貯蔵手段、前記第一の温度計測手段および前記第一の供給調節手段からなる冷海水調節手段と、前記第二の供給調節手段および前記第二の温度計測手段からなる温海水調節手段とのうち少なくとも一つの動作条件を監視すると共に、前記凝縮手段に供給する冷却水の目標温度あるいはフラッシュ蒸発手段から排出される海水の目標温度を制御目標値として、前記冷却手段と冷海水調節手段と温海水調節手段とのいずれか少なくとも一つに指令を出力し、当該冷却手段と当該冷海水調節手段と当該温海水調節手段とのうち少なくとも一つを最適に制御する統合制御手段を備えることを
特徴とする海水淡水化装置。 In the seawater desalination apparatus according to any one of claims 1 to 3,
Cold seawater adjustment means comprising the cooling means, storage means, first temperature measurement means and first supply adjustment means, and temperature comprising the second supply adjustment means and second temperature measurement means. Monitoring at least one operating condition of the seawater adjusting means, and using the target temperature of cooling water supplied to the condensing means or the target temperature of seawater discharged from the flash evaporating means as a control target value, Integrated control means for outputting a command to at least one of the seawater adjusting means and the warm seawater adjusting means and optimally controlling at least one of the cooling means, the cold seawater adjusting means, and the warm seawater adjusting means. A seawater desalination apparatus comprising:
JP2004175868A 2004-06-14 2004-06-14 Seawater desalination apparatus Pending JP2005349369A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016017901A1 (en) * 2014-08-01 2016-02-04 대우조선해양 주식회사 Seawater discharge system and method
CN107473301A (en) * 2017-06-05 2017-12-15 联合瑞升（北京）科技有限公司 A kind of desulfurization wastewater low-temperature evaporation processing system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016017901A1 (en) * 2014-08-01 2016-02-04 대우조선해양 주식회사 Seawater discharge system and method
CN107473301A (en) * 2017-06-05 2017-12-15 联合瑞升（北京）科技有限公司 A kind of desulfurization wastewater low-temperature evaporation processing system
CN107473301B (en) * 2017-06-05 2018-08-07 联合瑞升（北京）科技有限公司 A kind of desulfurization wastewater low-temperature evaporation processing system

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