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JP2007127334A - Heating medium heating and cooling device - Google Patents

Heating medium heating and cooling device Download PDF

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Publication number
JP2007127334A
JP2007127334A JP2005320360A JP2005320360A JP2007127334A JP 2007127334 A JP2007127334 A JP 2007127334A JP 2005320360 A JP2005320360 A JP 2005320360A JP 2005320360 A JP2005320360 A JP 2005320360A JP 2007127334 A JP2007127334 A JP 2007127334A
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Prior art keywords
heating
heat medium
cooling
path
medium
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JP4068108B2 (en
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Masahiro Yonekura
正浩 米倉
Masahiro Takeuchi
雅弘 武内
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Taiyo Nippon Sanso Corp
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Taiyo Nippon Sanso Corp
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Priority to JP2005320360A priority Critical patent/JP4068108B2/en
Priority to SG200607484-3A priority patent/SG131914A1/en
Priority to US11/590,819 priority patent/US20070104626A1/en
Priority to CNB2006101504970A priority patent/CN100541065C/en
Publication of JP2007127334A publication Critical patent/JP2007127334A/en
Priority to HK07108685.6A priority patent/HK1100693A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006—Controlling or regulating processes
    • B01J19/0013—Controlling the temperature of the process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/00094—Jackets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00191—Control algorithm
    • B01J2219/00193—Sensing a parameter
    • B01J2219/00195—Sensing a parameter of the reaction system
    • B01J2219/00202—Sensing a parameter of the reaction system at the reactor outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00191—Control algorithm
    • B01J2219/00222—Control algorithm taking actions
    • B01J2219/00227—Control algorithm taking actions modifying the operating conditions
    • B01J2219/00238—Control algorithm taking actions modifying the operating conditions of the heat exchange system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/06—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits forming part of, or being attached to, the tank containing the body of fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0077—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for tempering, e.g. with cooling or heating circuits for temperature control of elements

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

【課題】加熱及び冷却の対象となる熱媒（冷媒）の量を最小限とすることにより、エネルギーコストを削減し、反応槽の加熱及び冷却を効率よく行うことができ、装置構成の複雑化や大型化も回避することができる熱媒加熱冷却装置を提供する。
【解決手段】熱媒を送出する循環ポンプ１１と、熱媒を冷却する冷却手段（熱交換器１２）と、熱媒によって温度制御される反応槽１３と、熱媒を加熱する加熱手段（加熱器１４）とを循環経路１５に配置した熱媒加熱冷却装置であって、加熱器１４から循環ポンプ１１に至るポンプ吸込側経路２１に、ポンプ吸込側経路２１から上方に向かって分岐し、リザーブタンク２２の液相部２２ａに接続するリザーブ経路２９を設ける。
【選択図】図１[PROBLEMS] To minimize the amount of a heat medium (refrigerant) to be heated and cooled, thereby reducing energy costs, efficiently heating and cooling a reaction tank, and complicating an apparatus configuration. And a heating medium heating / cooling device capable of avoiding increase in size and size.
A circulation pump 11 for sending a heat medium, a cooling means (heat exchanger 12) for cooling the heat medium, a reaction tank 13 whose temperature is controlled by the heat medium, and a heating means (heating) for heating the heat medium. 14) is a heating medium heating / cooling device arranged in the circulation path 15 and branches upward from the pump suction side path 21 to the pump suction side path 21 extending from the heater 14 to the circulation pump 11, and is reserved. A reserve path 29 connected to the liquid phase part 22 a of the tank 22 is provided.
[Selection] Figure 1

Description

本発明は、熱媒加熱冷却装置に関し、詳しくは、化学反応プロセス等で利用される低温反応槽の温度制御を行うための熱媒加熱冷却装置に関する。   The present invention relates to a heat medium heating / cooling device, and more particularly to a heat medium heating / cooling device for controlling the temperature of a low-temperature reaction tank used in a chemical reaction process or the like.

有機合成や晶析等の化学反応プロセスは、精度の高い温度制御が要求される。そのため、反応槽の外側に冷媒を流通可能とした独立した槽（ジャケット）を設けた二重構造の容器が使用される。そして、所定温度に冷却した冷媒を反応槽のジャケット側に循環供給するための冷媒供給装置を設置することにより、反応槽内を間接的に所定の低温状態に維持するようにしている（例えば、特許文献１参照。）
このような冷媒供給装置では、一般に、冷媒循環ポンプの冷媒吸込み側にリザーブタンクを直列に設け、冷媒循環ポンプへの気泡の混入を防止するとともに、冷媒の温度変化に伴う容積変化を吸収するようにしている。このようなリザーブタンクでは、冷媒の温度低下によって冷媒の体積が減少したときには加圧ガスを導入し、冷媒の温度上昇によって冷媒の体積が増大したときには加圧ガスを抜き出す圧力制御弁や減圧弁等の圧力制御手段が設けられており、冷媒循環ポンプの吸い込み圧力を一定に保つようにしている。 Chemical reaction processes such as organic synthesis and crystallization require highly accurate temperature control. For this reason, a double-structured container provided with an independent tank (jacket) that allows the refrigerant to flow outside the reaction tank is used. Then, by installing a refrigerant supply device for circulatingly supplying the refrigerant cooled to a predetermined temperature to the jacket side of the reaction tank, the inside of the reaction tank is indirectly maintained at a predetermined low temperature state (for example, (See Patent Document 1.)
In such a refrigerant supply device, generally, a reserve tank is provided in series on the refrigerant suction side of the refrigerant circulation pump so as to prevent air bubbles from entering the refrigerant circulation pump and to absorb a volume change accompanying a temperature change of the refrigerant. I have to. In such a reserve tank, a pressure control valve, a pressure reducing valve, or the like that introduces pressurized gas when the volume of the refrigerant decreases due to a decrease in the temperature of the refrigerant, and extracts the pressurized gas when the volume of the refrigerant increases due to an increase in the temperature of the refrigerant. The pressure control means is provided to keep the suction pressure of the refrigerant circulation pump constant.

一方、前述のような反応槽では、反応槽を洗浄する際に、前記ジャケットに高温の熱媒を循環導入して反応槽内の洗浄剤を加熱する操作を行うことがあるため、前記冷媒供給装置に加えて熱媒を供給する手段を設けておく必要がある。このとき、ジャケット内から冷媒を抜き取って熱媒を供給するものでは、配管等を含めた装置構成が複雑になり、また、ジャケットに供給する冷媒及び熱媒の切り換えが必要なことから工程が複雑になるという問題もあった。
特開平１１−３７６２３号公報 On the other hand, in the reaction tank as described above, when washing the reaction tank, there is a case where a high-temperature heat medium is circulated and introduced into the jacket to heat the cleaning agent in the reaction tank. In addition to the apparatus, it is necessary to provide means for supplying a heat medium. At this time, in the case of supplying the heat medium by extracting the refrigerant from the inside of the jacket, the device configuration including piping and the like becomes complicated, and the process is complicated because it is necessary to switch between the refrigerant and the heat medium supplied to the jacket. There was also a problem of becoming.
JP 11-37623 A

このため、冷媒供給装置の系統中に冷媒を加熱する手段を設け、冷媒を所定温度に加熱してジャケットに循環させることにより、反応槽を加熱することも考えられる。しかし、前述のようにリザーブタンクが冷媒吸込み側に直列に設けられている場合は、循環系統の配管内やジャケット内の冷媒だけでなく、リザーブタンク内の冷媒も加熱しなければならないことから、加熱や冷却に要するエネルギーコストが多大なものとなり、特に大規模システムでは、大型のリザーブタンクを使用していることから、応答性が著しく低下し、エネルギーロスも増大することになる。   For this reason, it is also conceivable to heat the reaction tank by providing a means for heating the refrigerant in the system of the refrigerant supply device and heating the refrigerant to a predetermined temperature and circulating it through the jacket. However, when the reserve tank is provided in series on the refrigerant suction side as described above, not only the refrigerant in the circulation system piping and the jacket, but also the refrigerant in the reserve tank must be heated. The energy cost required for heating and cooling is enormous, and particularly in a large-scale system, since a large reserve tank is used, the responsiveness is remarkably lowered and the energy loss is also increased.

さらに、冷媒温度の上昇に伴う体積増大や冷媒の気化によってリザーブタンク内の圧力が上昇するため、前記圧力制御手段が作動してリザーブタンク内のガスを放出する際に、高価な冷媒蒸気が外部に放出されてしまうこともある。   Furthermore, since the pressure in the reserve tank rises due to the volume increase accompanying the rise in the refrigerant temperature and the vaporization of the refrigerant, when the pressure control means is operated to release the gas in the reserve tank, the expensive refrigerant vapor is externally May be released.

そこで本発明は、加熱及び冷却の対象となる熱媒（冷媒）の量を最小限とすることにより、エネルギーコストを削減し、反応槽の加熱及び冷却を効率よく行うことができ、装置構成の複雑化や大型化も回避することができる熱媒加熱冷却装置を提供することを目的としている。   Therefore, the present invention can reduce the energy cost by minimizing the amount of the heat medium (refrigerant) to be heated and cooled, and can efficiently heat and cool the reaction tank. An object of the present invention is to provide a heat medium heating / cooling device that can avoid the increase in complexity and size.

上記目的を達成するため、本発明の熱媒加熱冷却装置は、熱媒を送出する循環ポンプと、該循環ポンプから吐出された熱媒を冷却する冷却手段と、該冷却手段から導出した熱媒によって温度制御される反応槽と、該反応槽から導出した熱媒を加熱する加熱手段とを有し、前記熱媒を前記循環ポンプ、冷却手段、反応槽及び加熱手段を経て循環ポンプに循環させる循環経路を備えた熱媒加熱冷却装置であって、前記加熱手段から前記循環ポンプに至るポンプ吸込側経路に、該ポンプ吸込側経路から分岐してリザーブタンクの液相部に接続するリザーブ経路を設けたことを特徴としている。   In order to achieve the above object, a heating medium heating / cooling device of the present invention includes a circulation pump that sends out the heating medium, a cooling means that cools the heating medium discharged from the circulation pump, and a heating medium that is derived from the cooling means. And a heating means for heating the heat medium led out from the reaction tank, and circulating the heat medium to the circulation pump through the circulation pump, the cooling means, the reaction tank, and the heating means. A heating medium heating / cooling device having a circulation path, wherein a reserve path that branches from the pump suction side path to the liquid phase part of the reserve tank is connected to the pump suction side path from the heating means to the circulation pump. It is characterized by providing.

さらに、本発明の熱媒加熱冷却装置は、前記リザーブ経路が前記ポンプ吸込側経路から上方に向かって分岐していることを特徴とし、また、前記リザーブタンクが、その気相部に連通する蒸気トラップを備え、該蒸気トラップは、熱媒蒸気を冷却して液化させる冷却部と、該冷却部で冷却されて液化した熱媒をリザーブタンクに返送する経路と、該蒸気トラップ内の圧力に応じて蒸気トラップの気相部からガスを放出するガス放出弁とを備えていることを特徴としている。   Furthermore, the heating medium heating / cooling device of the present invention is characterized in that the reserve path branches upward from the pump suction side path, and the reserve tank communicates with a vapor phase portion thereof. The steam trap includes a cooling unit that cools and liquefies the heat medium vapor, a path for returning the liquefied heat medium cooled by the cooling unit to the reserve tank, and a pressure in the steam trap. And a gas release valve for releasing gas from the gas phase portion of the vapor trap.

本発明の熱媒加熱冷却装置によれば、リザーブタンクを循環経路から分岐した状態で設置しているので、反応槽を冷却から加熱へ、あるいは、加熱から冷却へ切り換える際に、加熱又は冷却の対象となる熱媒を、循環経路内を循環する熱媒だけとすることができ、リザーブタンク内の熱媒を加熱又は冷却する必要がない。したがって、エネルギーコストの削減や応答性の向上が図れ、反応槽を所定温度に確実に加熱又は冷却することができる。   According to the heat medium heating / cooling device of the present invention, the reserve tank is installed in a state branched from the circulation path. Therefore, when the reaction tank is switched from cooling to heating or from heating to cooling, heating or cooling is not performed. The target heat medium can be only the heat medium circulating in the circulation path, and there is no need to heat or cool the heat medium in the reserve tank. Therefore, energy costs can be reduced and responsiveness can be improved, and the reaction vessel can be reliably heated or cooled to a predetermined temperature.

また、リザーブタンクに接続するリザーブ経路をポンプ吸込側経路から上方に向かって分岐させたことにより、ポンプ吸込側経路を流れる熱媒中に存在する気泡をリザーブタンクに効率よく排出することができ、循環ポンプへの気泡の混入を防止できる。さらに、リザーブタンクに蒸気トラップを設けることにより、系内の圧力が上昇してリザーブタンク内の熱媒蒸気がガス放出弁から外部に放出されることを防止できる。   In addition, by branching the reserve path connected to the reserve tank upward from the pump suction side path, air bubbles existing in the heat medium flowing through the pump suction side path can be efficiently discharged to the reserve tank, Air bubbles can be prevented from entering the circulation pump. Furthermore, by providing a vapor trap in the reserve tank, it is possible to prevent the heat medium vapor in the reserve tank from being released to the outside from the gas release valve due to an increase in the pressure in the system.

しかも、一つの閉サイクル系で熱媒の加熱及び冷却を行うことができるので、装置構成が複雑化したり、大型化したりすることがなく、設備コストやランニングコストの低減を図れる。   In addition, since the heating medium can be heated and cooled in a single closed cycle system, the equipment configuration and the size of the apparatus can be reduced without complicating or increasing the size of the apparatus.

図１は本発明の一形態例を示す熱媒加熱冷却装置の系統図である。この熱媒加熱冷却装置は、熱媒を送出する循環ポンプ１１と、該循環ポンプ１１から吐出された熱媒を冷却する冷却手段である熱交換器１２と、該熱交換器１２から導出した熱媒によって温度制御される反応槽１３と、該反応槽１３から導出した熱媒を加熱する加熱手段である加熱器１４と、これらを接続する各配管とを有しており、各配管により、循環ポンプ１１、熱交換器１２、反応槽１３及び加熱器１４を経て循環ポンプ１１に熱媒を循環させる閉サイクル系の循環経路１５が形成されている。   FIG. 1 is a system diagram of a heating medium heating / cooling apparatus showing an embodiment of the present invention. The heat medium heating / cooling device includes a circulation pump 11 that sends out the heat medium, a heat exchanger 12 that is a cooling unit that cools the heat medium discharged from the circulation pump 11, and heat derived from the heat exchanger 12. It has a reaction tank 13 whose temperature is controlled by a medium, a heater 14 which is a heating means for heating a heat medium led out from the reaction tank 13, and pipes connecting these, and each pipe circulates. A closed-cycle circulation path 15 for circulating the heat medium to the circulation pump 11 through the pump 11, the heat exchanger 12, the reaction tank 13, and the heater 14 is formed.

前記熱交換器１２は、低温流体導入経路１６から熱交換器１２に導入されて排気ガス経路１７に導出される低温液化ガス等の低温流体と間接熱交換することによって循環する熱媒を所定温度に冷却し、前記加熱器１４は、ヒーター１４ａによって循環する熱媒を所定温度に加熱する。   The heat exchanger 12 introduces a heat medium that circulates by indirect heat exchange with a low-temperature fluid such as a low-temperature liquefied gas introduced into the heat exchanger 12 from the low-temperature fluid introduction path 16 and led to the exhaust gas path 17 to a predetermined temperature. The heater 14 heats the heat medium circulated by the heater 14a to a predetermined temperature.

前記反応槽１３は、反応容器１３ａの外周に熱媒が流通するジャケット１３ｂを設けたものであって、該ジャケット１３ｂに供給される熱媒の温度は、ジャケット１３ｂの入口側経路１８に設けた温度指示調節計（ＴＩＣ）１９で、前記低温流体導入経路１６に設けた流量調節弁２０の開閉及び前記ヒーター１４ａの能力を制御することによって調節される。   The reaction tank 13 is provided with a jacket 13b through which a heat medium circulates on the outer periphery of the reaction vessel 13a. The temperature of the heat medium supplied to the jacket 13b is provided in the inlet-side path 18 of the jacket 13b. A temperature indicating controller (TIC) 19 adjusts the flow rate control valve 20 provided in the low-temperature fluid introduction path 16 by opening and closing and controlling the capacity of the heater 14a.

そして、前記加熱器１４から前記循環ポンプ１１に至るポンプ吸込側経路２１には、該ポンプ吸込側経路２１から上方に分岐してリザーブタンク２２の液相部２２ａに接続するリザーブ経路２３が設けられている。リザーブタンク２２は、前記循環経路１５からリザーブ経路２３を介して分岐した状態で設けられ、従来のように熱媒の循環流に対して直列ではなく、流れ的に分離した状態となっており、循環経路１５を流れる熱媒の体積変化に応じて循環経路１５とリザーブタンク２２とで熱媒のやりとりを行うように形成され、かつ、循環経路１５を液封状態としてリザーブタンク２２から循環経路１５にガスが侵入しないように形成されている。   The pump suction side path 21 extending from the heater 14 to the circulation pump 11 is provided with a reserve path 23 that branches upward from the pump suction side path 21 and connects to the liquid phase portion 22 a of the reserve tank 22. ing. The reserve tank 22 is provided in a state of being branched from the circulation path 15 via the reserve path 23, and is in a state of being separated in a flow manner, not in series with respect to the circulation flow of the heat medium as in the prior art, It is formed so that the heat medium is exchanged between the circulation path 15 and the reserve tank 22 in accordance with the volume change of the heat medium flowing through the circulation path 15, and the circulation path 15 is placed in a liquid-sealed state from the reserve tank 22 to the circulation path 15. It is formed so that gas does not invade.

また、リザーブタンク２２の気相部２２ｂには、リザーブタンク２２内の圧力に応じて作動するガス導入弁２４と、蒸気トラップ２５とが接続され、さらに、蒸気トラップ２５には、蒸気トラップ２５内の圧力に応じて作動するガス放出弁２６が設けられている。   A gas introduction valve 24 that operates according to the pressure in the reserve tank 22 and a steam trap 25 are connected to the gas phase portion 22 b of the reserve tank 22. Further, the steam trap 25 is connected to the inside of the steam trap 25. There is provided a gas release valve 26 that operates in accordance with the pressure of the gas.

蒸気トラップ２５は、熱媒蒸気を冷却して液化させるための冷却部２７と、該冷却部２７で液化した熱媒と液化しないガスとを分離する気液分離部２８と、該気液分離部２８で分離した熱媒をリザーブタンクに返送する熱媒返送経路２９と、気液分離部２８内に溜まった熱媒量（液量）や圧力差に応じて開閉するフロート弁３０とを有している。   The steam trap 25 includes a cooling unit 27 for cooling and liquefying the heat medium vapor, a gas-liquid separation unit 28 for separating the heat medium liquefied by the cooling unit 27 and a gas that is not liquefied, and the gas-liquid separation unit. A heat medium return path 29 for returning the heat medium separated in 28 to the reserve tank, and a float valve 30 that opens and closes according to the amount of heat medium (liquid amount) accumulated in the gas-liquid separator 28 and the pressure difference. ing.

前記ガス導入弁２４及び前記ガス放出弁２６は、圧力的に連通している循環経路１５内を循環する熱媒の体積変化に伴う圧力変化に応じて作動するものであって、熱媒が加熱されて体積が増大し、系内の圧力が上昇したときには、ガス放出弁２６が作動して系内のガスを系外に放出することによって系内の圧力を設定された上限圧力以下に保ち、熱媒が冷却されて体積が減少し、系内の圧力が下降したときには、ガス導入弁２４が開いて系外から熱媒に悪影響を与えないガス、例えば窒素ガスを加圧ガスとして導入することにより、系内の圧力を設定された下限圧力以上に保つ。   The gas introduction valve 24 and the gas release valve 26 operate according to a pressure change accompanying a volume change of the heat medium circulating in the circulation path 15 communicating in pressure, and the heat medium is heated. When the volume increases and the pressure in the system rises, the gas release valve 26 operates to release the gas in the system to the outside of the system, thereby keeping the pressure in the system below the set upper limit pressure, When the heat medium is cooled and the volume decreases and the pressure in the system decreases, the gas introduction valve 24 opens to introduce a gas that does not adversely affect the heat medium from outside the system, such as nitrogen gas, as a pressurized gas. As a result, the pressure in the system is maintained at or above the set lower limit pressure.

また、ガス放出弁２６からガスを放出する際に、リザーブタンク２２の気相部２２ｂから抜き出されるガスを、蒸気トラップ２５の冷却部２７で冷却することにより、該ガス中に含まれる熱媒蒸気を凝縮液化させることができ、ガス放出弁２６から放出されるガスと共に熱媒蒸気が外部に放出されることを防止できる。気液分離部２８内に溜まった熱媒量がある程度以上になるとフロート弁３０が開き、気液分離部２８から熱媒返送経路２９を経てリザーブタンク２２に熱媒が返送されて再利用される。   In addition, when the gas is released from the gas release valve 26, the gas extracted from the gas phase part 22 b of the reserve tank 22 is cooled by the cooling part 27 of the steam trap 25, so that the heat medium contained in the gas is contained. The vapor can be condensed and liquefied, and the heat medium vapor can be prevented from being released to the outside together with the gas released from the gas release valve 26. When the amount of the heat medium accumulated in the gas-liquid separation unit 28 exceeds a certain level, the float valve 30 opens, and the heat medium is returned from the gas-liquid separation unit 28 to the reserve tank 22 via the heat medium return path 29 and reused. .

このように形成した熱媒加熱冷却装置において、反応槽１３を冷却する際には、温度指示調節計１９に所定の冷却温度を設定することにより、温度指示調節計１９が入口側経路１８を流れる熱媒の温度に応じて作動し、冷却時には主として流量調節弁２０の開度を制御することにより、熱交換器１２での熱媒の冷却状態を調節する。   In the heat medium heating / cooling device formed as described above, when the reaction tank 13 is cooled, the temperature indicating controller 19 flows through the inlet side path 18 by setting a predetermined cooling temperature in the temperature indicating controller 19. It operates according to the temperature of the heat medium, and the cooling state of the heat medium in the heat exchanger 12 is adjusted by mainly controlling the opening degree of the flow control valve 20 during cooling.

この冷却時には、温度低下に伴う熱媒の体積減少により、リザーブタンク２２内の熱媒が循環経路１５に流入するとともに、リザーブタンク２２内の熱媒量の減少に伴う圧力低下に応じてガス導入弁２４が開閉し、加圧ガスを導入することによって系内の圧力を所定圧力に保持する。このとき、リザーブタンク２２から循環経路１５に、相対的に温度が高い熱媒が流入することになるが、その流入量は、冷却による熱媒の体積減少量に応じた僅かな量であるから、循環経路１５を循環する熱媒に大きな温度変化を与えることはない。   During this cooling, the heat medium in the reserve tank 22 flows into the circulation path 15 due to a decrease in the volume of the heat medium accompanying the temperature decrease, and the gas is introduced according to the pressure decrease accompanying the decrease in the amount of the heat medium in the reserve tank 22. The valve 24 opens and closes, and the pressure in the system is maintained at a predetermined pressure by introducing pressurized gas. At this time, a heat medium having a relatively high temperature flows into the circulation path 15 from the reserve tank 22, but the amount of the inflow is a small amount corresponding to the volume reduction amount of the heat medium due to cooling. A large temperature change is not given to the heat medium circulating in the circulation path 15.

また、リザーブタンク２２が循環経路１５から切り離された状態となっているので、リザーブタンク２２内の熱媒を冷却する必要はなく、全ての熱媒が冷却対象となっている従来のものに比べて冷却する熱媒量が少なくなることから、従来に比べて熱媒を冷却するためのエネルギーコストを大幅に削減することができ、応答性にも優れたものとなる。   Further, since the reserve tank 22 is separated from the circulation path 15, it is not necessary to cool the heat medium in the reserve tank 22, compared to the conventional one in which all the heat medium is a cooling target. Since the amount of the heat medium to be cooled is reduced, the energy cost for cooling the heat medium can be greatly reduced as compared with the conventional case, and the response is excellent.

一方、反応槽１３を加熱する際には、温度指示調節計１９に所定の加熱温度を設定することにより、温度指示調節計１９が入口側経路１８を流れる熱媒の温度に応じて作動し、加熱時には主として加熱器１４の能力を制御することにより、加熱器１４での熱媒の加熱状態を調節する。   On the other hand, when the reaction tank 13 is heated, by setting a predetermined heating temperature in the temperature indicating controller 19, the temperature indicating controller 19 operates according to the temperature of the heat medium flowing through the inlet side path 18, During heating, the heating medium heating state in the heater 14 is adjusted mainly by controlling the capacity of the heater 14.

この加熱時には、熱媒の温度上昇に伴う体積増大により、循環経路１５を循環する熱媒の一部がリザーブタンク２２に流入することになり、リザーブタンク２２への熱媒の流入に伴って蒸気トラップ２５の圧力が上昇するが、この圧力上昇に応じてガス放出弁２６が開閉し、ガスを系外に放出することによって系内を所定圧力に保持する。また、加熱器１４での加熱により発生した熱媒蒸気の気泡は、ポンプ吸込側経路２１から上方に向かって分岐したリザーブ経路２３内を浮上するので、循環ポンプ１１が気泡を吸い込むことが防止される。リザーブ経路２３からリザーブタンク２２内に浮上した熱媒蒸気からなる気泡は、リザーブタンク２２の液相部２２ａに流入し、循環経路１５を循環する熱媒より低温の熱媒に接触して再液化したり、蒸気トラップ２５の冷却部１７で再液化される。   At the time of this heating, a part of the heat medium circulating in the circulation path 15 flows into the reserve tank 22 due to an increase in volume accompanying the temperature increase of the heat medium, and steam flows along with the inflow of the heat medium into the reserve tank 22. Although the pressure of the trap 25 increases, the gas release valve 26 opens and closes in response to this pressure increase, and the inside of the system is maintained at a predetermined pressure by releasing the gas out of the system. Further, the bubbles of the heat medium vapor generated by the heating in the heater 14 float up in the reserve path 23 branched upward from the pump suction side path 21, so that the circulation pump 11 is prevented from sucking the bubbles. The Bubbles made of the heat medium vapor floating in the reserve tank 22 from the reserve path 23 flow into the liquid phase portion 22a of the reserve tank 22 and come into contact with a heat medium having a temperature lower than that of the heat medium circulating in the circulation path 15 to reliquefy. Or reliquefied in the cooling section 17 of the steam trap 25.

なお、リザーブ経路２３をポンプ吸込側経路２１から鉛直方向上方に向かって分岐し、ポンプ吸込側経路２１やリザーブ経路２３に太めのパイプを使用したり、ポンプ吸込側経路２１の循環ポンプ１１側を下方に向けて屈曲させたりすることにより、熱媒中の気泡をリザーブ経路２３に向けて効率よく浮上させて分離することができる。   The reserve path 23 is branched vertically upward from the pump suction side path 21, and a thicker pipe is used for the pump suction side path 21 and the reserve path 23, or the circulation pump 11 side of the pump suction side path 21 is connected to the circulation pump 11 side. By bending downward, the bubbles in the heating medium can be efficiently lifted and separated toward the reserve path 23.

さらに、前記同様に、加熱対象となる熱媒は、循環経路１５を循環する熱媒だけであるから、熱媒の加熱に要するエネルギーコストを大幅に削減でき、応答性も向上させることができる。加えて、リザーブタンク２２には、熱媒の体積増加に応じて加熱器１４で加熱された熱媒が流入するが、その流入量は少なく、かつ、それ以上に加熱されないので、リザーブタンク２２内での熱媒蒸気の発生もほとんどなく、蒸発したとしても、蒸気トラップ２５で捕捉されて再利用できるので、熱媒の損失を最小限に抑えることができる。   Further, as described above, since the heating medium to be heated is only the heating medium circulating in the circulation path 15, the energy cost required for heating the heating medium can be greatly reduced, and the responsiveness can be improved. In addition, although the heat medium heated by the heater 14 flows into the reserve tank 22 in accordance with the increase in the volume of the heat medium, the amount of the inflow is small and the heat medium is not heated any more. There is almost no generation of the heat medium vapor, and even if it evaporates, it is captured by the vapor trap 25 and can be reused, so that the loss of the heat medium can be minimized.

なお、循環経路１５に設ける加熱手段や冷却手段は、加熱温度、冷却温度、処理量等の条件に応じて適当なものを使用することができ、加熱源や冷却源も任意のものを使用することができる。また、冷却部２７における冷却温度は、熱媒の沸点や予想される蒸気量及び蒸気温度に応じて任意に設定することができ、空冷、水冷等の通常の冷却方式を採用することができ、構造や形状も任意である。さらに、使用する熱媒は、冷却温度及び加熱温度に応じて適宜なものを選択することができ、例えば、シリコーンオイルやアルコール類、ハイドロフロロエーテルを使用することができる。   In addition, the heating means and cooling means provided in the circulation path 15 can use appropriate things according to conditions, such as heating temperature, cooling temperature, and processing amount, and also use arbitrary heating sources and cooling sources. be able to. Further, the cooling temperature in the cooling unit 27 can be arbitrarily set according to the boiling point of the heat medium and the expected vapor amount and vapor temperature, and a normal cooling method such as air cooling or water cooling can be adopted, The structure and shape are also arbitrary. Furthermore, the heat medium to be used can be selected appropriately according to the cooling temperature and the heating temperature, and for example, silicone oil, alcohols, and hydrofluoroether can be used.

本発明の一形態例を示す熱媒加熱冷却装置の系統図である。It is a systematic diagram of a heat medium heating and cooling device showing an embodiment of the present invention.

符号の説明Explanation of symbols

１１…循環ポンプ、１２…熱交換器、１３…反応槽、１３ａ…反応容器、１３ｂ…ジャケット、１４…加熱器、１４ａ…ヒーター、１５…循環経路、１６…低温流体導入経路、１７…排気ガス経路、１８…入口側経路、１９…温度指示調節計、２０…流量調節弁、２１…ポンプ吸込側経路、２２…リザーブタンク、２２ａ…液相部、２２ｂ…気相部、２３…リザーブ経路、２４…ガス導入弁、２５…蒸気トラップ、２６…ガス放出弁、２７…冷却部、２８…気液分離部、２９…熱媒返送経路、３０…フロート弁   DESCRIPTION OF SYMBOLS 11 ... Circulation pump, 12 ... Heat exchanger, 13 ... Reaction tank, 13a ... Reaction container, 13b ... Jacket, 14 ... Heater, 14a ... Heater, 15 ... Circulation path, 16 ... Low temperature fluid introduction path, 17 ... Exhaust gas Route: 18 ... Inlet side route, 19 ... Temperature indicating controller, 20 ... Flow control valve, 21 ... Pump suction side route, 22 ... Reserve tank, 22a ... Liquid phase portion, 22b ... Gas phase portion, 23 ... Reserve route, 24 ... Gas introduction valve, 25 ... Steam trap, 26 ... Gas release valve, 27 ... Cooling section, 28 ... Gas-liquid separation section, 29 ... Heat medium return path, 30 ... Float valve

Claims (3)

熱媒を送出する循環ポンプと、該循環ポンプから吐出された熱媒を冷却する冷却手段と、該冷却手段から導出した熱媒によって温度制御される反応槽と、該反応槽から導出した熱媒を加熱する加熱手段とを有し、前記熱媒を前記循環ポンプ、冷却手段、反応槽及び加熱手段を経て循環ポンプに循環させる循環経路を備えた熱媒加熱冷却装置であって、前記加熱手段から前記循環ポンプに至るポンプ吸込側経路に、該ポンプ吸込側経路から分岐してリザーブタンクの液相部に接続するリザーブ経路を設けたことを特徴とする熱媒加熱冷却装置。   Circulation pump for delivering a heat medium, cooling means for cooling the heat medium discharged from the circulation pump, a reaction tank whose temperature is controlled by the heat medium derived from the cooling means, and a heat medium derived from the reaction tank A heating medium heating / cooling device comprising a circulation path for circulating the heating medium through the circulation pump, the cooling means, the reaction tank, and the heating means to the circulation pump. A heating medium heating / cooling device, wherein a reserve path that branches from the pump suction side path and connects to a liquid phase portion of the reserve tank is provided in a pump suction side path extending from the pump to the circulation pump. 前記リザーブ経路は、前記ポンプ吸込側経路から上方に向かって分岐していることを特徴とする請求項１記載の熱媒加熱冷却装置。   The heating medium heating / cooling device according to claim 1, wherein the reserve path branches upward from the pump suction side path. 前記リザーブタンクは、その気相部に連通する蒸気トラップを備え、該蒸気トラップは、熱媒蒸気を冷却して液化させる冷却部と、該冷却部で冷却されて液化した熱媒をリザーブタンクに返送する経路と、該蒸気トラップ内の圧力に応じて蒸気トラップの気相部からガスを放出するガス放出弁とを備えていることを特徴とする請求項１又は２記載の熱媒加熱冷却装置。   The reserve tank includes a steam trap that communicates with a gas phase portion of the reserve tank. The steam trap cools and liquefies the heat medium vapor, and the heat medium cooled and liquefied by the cooling portion is supplied to the reserve tank. The heating medium heating / cooling device according to claim 1, further comprising a return path and a gas release valve that discharges gas from a vapor phase portion of the steam trap in accordance with a pressure in the steam trap. .
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US11/590,819 US20070104626A1 (en) 2005-11-04 2006-11-01 Heat-transfer-medium heating and cooling apparatus
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US20070104626A1 (en) 2007-05-10
JP4068108B2 (en) 2008-03-26

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