KR20140031724A - For the emergency cooling system to prevent overheating of whru - Google Patents

For the emergency cooling system to prevent overheating of whru Download PDF

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KR20140031724A
KR20140031724A KR1020120098399A KR20120098399A KR20140031724A KR 20140031724 A KR20140031724 A KR 20140031724A KR 1020120098399 A KR1020120098399 A KR 1020120098399A KR 20120098399 A KR20120098399 A KR 20120098399A KR 20140031724 A KR20140031724 A KR 20140031724A
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South Korea
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waste heat
heat recovery
emergency cooling
recovery device
closed loop
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KR1020120098399A
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Korean (ko)
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이아진
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현대중공업 주식회사
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Publication of KR20140031724A publication Critical patent/KR20140031724A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
    • F02G5/02—Profiting from waste heat of exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K13/00—General layout or general methods of operation of complete plants
    • F01K13/02—Controlling, e.g. stopping or starting
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The present invention relates to an emergency cooling system for preventing a waste heat recovery unit from overheating, comprising a waste heat recovery unit; a closed loop connected to the waste heat recovery unit to circulate a heat medium; a process heater arranged on the closed loop; a waste heat recovery pump mounted on the closed loop to circulate the heat medium; on/off valves mounted on the closed loop before and behind the waste heat recovery unit; an emergency cooling backup loop connected to the waste heat recovery unit to circulate the heat medium in case that the waste heat recovery pump is in a failure state; and an emergency cooling pump mounted on the emergency cooling backup loop to circulate the heat medium to the emergency cooling backup loop in case that the waste heat recovery pump is in a failure state. The present invention can not only cool the heat medium circulating along the waste heat recovery unit and the closed loop using the emergency cooling backup loop and the emergency cooling pump in case of a problem occurring in the waste heat recovery pump but also prevent safety accidents induced by the overheating of the waste heat recovery unit. [Reference numerals] (AA) Normal operation; (BB) Emergency operation

Description

폐열회수장치의 과열방지를 위한 비상냉각시스템{For the emergency cooling system to prevent overheating of WHRU}Emergency cooling system to prevent overheating of waste heat recovery system

본 발명은 폐열회수장치의 과열방지를 위하여 비상냉각 백업루프를 이용한 폐열회수장치의 과열방지를 위한 비상냉각시스템에 관한 것으로서, 더욱 상세하게는 폐열회수펌프의 문제발생시 폐열회수장치와 폐쇄루프를 따라 이동하는 열 매체와 폐열회수장치를 냉각시킬 수 있도록 비상냉각 백업루프 추가 및 비상냉각 펌프를 설치하여 시스템을 안정화할 수 있도록 한 폐열회수장치의 과열방지를 위한 비상냉각시스템에 관한 것이다.
The present invention relates to an emergency cooling system for preventing the overheating of the waste heat recovery apparatus using the emergency cooling backup loop to prevent overheating of the waste heat recovery apparatus, and more particularly, according to the waste heat recovery apparatus and the closed loop in the event of a problem of the waste heat recovery pump. The present invention relates to an emergency cooling system for preventing overheating of the waste heat recovery system to stabilize the system by adding an emergency cooling backup loop and installing an emergency cooling pump to cool the moving heat medium and the waste heat recovery system.

열 매체 시스템(Heating Medium system)은 폐쇄루프(Closed loop)를 통해 폐열회수장치(WHRU)에서 공급되는 열을 열 매체가 흡수한 후 상기 열 매체가 폐쇄루프를 따라 순환하면서 각 공정히터(Process heater)들에 열을 전달해주는 방법을 말한다. The heat medium system absorbs heat supplied from a waste heat recovery device (WHRU) through a closed loop, and then heats the process medium along the closed loop, thereby processing each process heater. How to transfer heat to the).

여기서 상기 폐열회수장치(WHRU :Waste heat recovery unit)는 다른 시스템(Compressor turbine)에서 전달되는 고온의 배기가스(Exhausted gas)가 내부를 통과하면서 열 매체에 열을 전달해주는 역할을 수행하게 된다. Here, the waste heat recovery unit (WHRU) serves to transfer heat to the heat medium while the exhaust gas, which is delivered from a compressor turbine, passes through the inside.

즉 상기 폐열회수장치를 통과하는 열 매체는 배기가스를 통해 고온의 열을 전달받아 상승하게 되고, 냉각된 배기가스는 폐열회수장치와 연결된 덕트를 통해 공기 중으로 배출되며, 폐열회수장치를 통과한 열 매체는 폐쇄루프에 배치되는 공정히터에 열을 공급하는 과정을 연속해서 거치게 된다. That is, the heat medium passing through the waste heat recovery device rises by receiving high temperature heat through the exhaust gas, and the cooled exhaust gas is discharged into the air through a duct connected to the waste heat recovery device, and the heat passed through the waste heat recovery device. The medium is continuously subjected to a process of supplying heat to the process heater disposed in the closed loop.

한편, 상기 폐쇄루프에는 폐열회수장치를 통해 전달되는 열 매체의 순환을 위하여 폐열회수펌프가 장착된다. On the other hand, the closed loop is equipped with a waste heat recovery pump for circulation of the heat medium transferred through the waste heat recovery device.

그리고 폐열회수장치 및 폐쇄루프는 평소 고온에서 운전되므로 열매체 순환작용이 멈추게 된다면, 폐열회수장치에 고립된 열매체는 전달받은 열을 각 히터에 보내주지 못하므로 온도가 계속적으로 상승하여 안전상 문제가 발생할 수가 있다.And since waste heat recovery device and closed loop are operated at high temperature normally, if the heat medium circulation stops, the heat medium isolated in the waste heat recovery device does not send the transferred heat to each heater. have.

따라서 폐열회수펌프는 platform이 Emergency 한 상황이 되어도 계속 운전이 되어야 하므로 Platform Emergency shutdown 상황에서도 열매체를 계속 순환시킬 수 있는 방안이 필요하였다.Therefore, the waste heat recovery pump had to be operated even when the platform was in an emergency situation. Therefore, a plan was needed to circulate the heat medium even in the case of platform emergency shutdown.

또한 종래의 폐열회수장치와 폐쇄루프는 폐열회수펌프의 작동불능시 열 매체의 순환불가와 배기가스를 통해 공급되는 열에 의한 폐열회수장치의 온도 상승으로 인하여 안전사고가 발생하게 되는 문제점이 있었다.
In addition, the conventional waste heat recovery device and the closed loop has a problem that a safety accident occurs due to the impossibility of circulation of the heat medium and the rise of the temperature of the waste heat recovery device due to the heat supplied through the exhaust gas when the waste heat recovery pump is inoperative.

대한민국 공개특허 제2012-0040787호Republic of Korea Patent Publication No. 2012-0040787 대한민국 공개특허 제2011-0134040호Republic of Korea Patent Publication No. 2011-0134040

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 폐열회수펌프의 문제발생시 비상냉각 백업루프와 비상냉각 펌프를 이용하여 폐열회수장치와 폐쇄루프를 따라 순환하는 열 매체를 냉각시킬 수 있도록 하는데 그 목적이 있다.
The present invention has been made to solve the above problems, and when the problem of the waste heat recovery pump occurs by using an emergency cooling backup loop and an emergency cooling pump to cool the heat medium circulated along the waste heat recovery device and the closed loop. The purpose is.

상기와 같은 목적을 달성하기 위하여, 폐열회수장치와; 상기 폐열회수장치와 연결되고 열 매체가 순환하는 폐쇄루프와; 상기 폐쇄루프에 배치되는 공정히터와; 상기 폐쇄루프에 장착되고 열 매체를 순환시키는 폐열회수펌프와; 상기 폐열회수장치의 전, 후에 위치한 폐쇄루프에 장착되는 온오프밸브와; 상기 폐열회수장치와 연결되고 상기 폐열회수펌프의 작동불능 시 열 매체가 순환되는 비상냉각 백업루프와; 상기 비상냉각 백업루프에 장착되고 상기 폐열회수펌프의 작동불능 시 열 매체를 비상냉각 백업루프에서 순환시키는 비상냉각 펌프;를 포함하여 이루어진 것을 특징으로 한다.
In order to achieve the above object, waste heat recovery apparatus; A closed loop connected to the waste heat recovery device and configured to circulate a heat medium; A process heater disposed in the closed loop; A waste heat recovery pump mounted to the closed loop and circulating a heat medium; An on-off valve mounted to a closed loop positioned before and after the waste heat recovery apparatus; An emergency cooling backup loop connected to the waste heat recovery device and configured to circulate a heat medium when the waste heat recovery pump is inoperable; And an emergency cooling pump mounted on the emergency cooling backup loop and circulating the heat medium in the emergency cooling backup loop when the waste heat recovery pump is inoperable.

본 발명에 따르면, 폐열회수펌프의 문제발생시 비상냉각 백업루프와 비상냉각 펌프를 이용하여 폐열회수장치와 폐쇄루프를 따라 순환하는 열 매체를 냉각시킬 수 있을 뿐만 아니라 폐열회수장치의 과열에 의한 안전사고를 방지할 수 있는 효과가 있다.
According to the present invention, when a problem of the waste heat recovery pump occurs, the emergency cooling backup loop and the emergency cooling pump can be used to cool the heat medium circulating along the waste heat recovery device and the closed loop, as well as a safety accident due to overheating of the waste heat recovery device. There is an effect that can be prevented.

도 1은 본 발명에 따른 폐열회수장치의 과열방지를 위한 비상냉각시스템을 나타낸 도면.
도 2는 본 발명에 따른 폐열회수장치의 과열방지를 위한 비상냉각시스템의 작동상태를 나타낸 도면. 1 is a view showing an emergency cooling system for preventing overheating of the waste heat recovery apparatus according to the present invention.
Figure 2 is a view showing the operating state of the emergency cooling system for preventing overheating of the waste heat recovery apparatus according to the present invention.

이하, 본 발명의 구성을 첨부된 도면을 참조로 설명하면, 도 1은 본 발명에 따른 폐열회수장치의 과열방지를 위한 비상냉각시스템을 나타낸 도면이고, 도 2는 본 발명에 따른 폐열회수장치의 과열방지를 위한 비상냉각시스템의 작동상태를 나타낸 도면이다.
Hereinafter, with reference to the accompanying drawings the configuration of the present invention, Figure 1 is a view showing an emergency cooling system for preventing overheating of the waste heat recovery apparatus according to the present invention, Figure 2 is a waste heat recovery apparatus according to the present invention A diagram showing the operating state of the emergency cooling system to prevent overheating.

본원발명인 폐열회수장치의 과열방지를 위한 비상냉각시스템(10)은 폐열회수장치(20)와, 상기 폐열회수장치(20)와 연결되고 열 매체가 순환하는 폐쇄루프(30)와, 상기 폐쇄루프(30)에 장착되는 공정히터(40)와, 상기 폐쇄루프(30)에 장착되고 열 매체를 순환시키는 폐열회수펌프(50)와, 상기 폐열회수장치(20)의 전, 후에 위치한 폐쇄루프(30)에 장착되는 온오프밸브(60)와, 상기 폐열회수장치(20)와 연결되고 상기 폐열회수펌프(50)의 작동불능 시 열 매체가 순환되는 비상냉각 백업루프(70)와, 상기 비상냉각 백업루프(70)에 장착되고 상기 폐열회수펌프(50)의 작동불능 시 열 매체를 비상냉각 백업루프(70)에서 순환시키는 비상냉각 펌프(80)와 상기 폐열회수장치(20)의 전, 후에 위치한 비상냉각 백업루프(70)에는 온/오프 밸브(90)로 구성된다. Emergency cooling system 10 for preventing overheating of the waste heat recovery device of the present invention is a waste heat recovery device 20, a closed loop 30 connected to the waste heat recovery device 20 and the heat medium circulates, and the closed loop A process heater 40 mounted to the 30, a waste heat recovery pump 50 mounted to the closed loop 30 and circulating the heat medium, and a closed loop positioned before and after the waste heat recovery device 20 An on-off valve (60) mounted on the (30), an emergency cooling backup loop (70) connected to the waste heat recovery device (20) and circulating a heat medium when the waste heat recovery pump (50) is inoperable, and the emergency Before the emergency cooling pump 80 and the waste heat recovery device 20 mounted on the cooling backup loop 70 and circulating the heat medium in the emergency cooling backup loop 70 when the waste heat recovery pump 50 is inoperable. The emergency cooling backup loop 70 located later is composed of an on / off valve 90.

상기 폐열회수장치(WHRU :Waste heat recovery unit)(20)는 다른 시스템(Compressor turbine)에서 전달되는 고온의 배기가스(Exhausted gas)가 내부를 통과하면서 열 매체에 열을 전달해주는 역할을 수행하게 된다. The waste heat recovery unit (WHRU) 20 serves to transfer heat to the heat medium while the exhaust gas of high temperature, which is delivered from another compressor (Compressor turbine), passes through the inside. .

상기 폐열회수장치(20)와 연결되는 폐쇄루프(30)는 상기 폐열회수장치(20)와 연결되고 상기 폐열회수장치(20)를 통해 공급되는 열 매체가 통과하는 통로 역할을 수행하게 된다. The closed loop 30 connected to the waste heat recovery device 20 serves as a passage through which the heat medium connected to the waste heat recovery device 20 and supplied through the waste heat recovery device 20 passes.

상기 폐쇄루프(30)에 배치되는 공정히터(40)는 상기 폐열회수장치(20)를 거쳐 고온의 열을 흡수한 열 매체와 열 교환을 통해 상기 열 매체의 고온의 열을 전달받게 된다. The process heater 40 disposed in the closed loop 30 receives the high temperature heat of the heat medium through heat exchange with a heat medium that absorbs high temperature heat through the waste heat recovery device 20.

상기 폐쇄루프(30)에 장착되는 폐열회수펌프(50)는 폐열회수장치(20)의 작동시 상기 폐쇄루프(30)를 따라 이동하는 열 매체를 연속적으로 순환시키는 역할을 수행하게 된다. The waste heat recovery pump 50 mounted to the closed loop 30 serves to continuously circulate the heat medium moving along the closed loop 30 when the waste heat recovery device 20 is operated.

상기 폐열회수장치(20)의 전, 후에 위치한 폐쇄루프(30)에 장착되는 온오프밸브(60)는 폐쇄루프(30)를 따라 순환하는 열 매체의 순환 또는 정지역할을 수행하게 된다. The on-off valve 60 mounted on the closed loop 30 located before and after the waste heat recovery device 20 performs circulation or static area circulation of the heat medium circulating along the closed loop 30.

즉 상기 온오프밸브(60)는 폐열회수장치(20)와 폐열회수펌프(50)의 작동시 폐쇄루프(30)를 개방하여 열 매체를 순환시키고 상기 폐열회수장치(20)와 폐열회수펌프(50)의 정지시 폐쇄루프(30)를 폐쇄하는 역할을 수행하게 되는 것이다. That is, the on-off valve 60 circulates the heat medium by opening the closed loop 30 when the waste heat recovery device 20 and the waste heat recovery pump 50 operate, and the waste heat recovery device 20 and the waste heat recovery pump ( It will serve to close the closed loop 30 when the stop 50.

이때 상기 온오프밸브(60)는 폐열회수장치(20)의 전, 후에 위치한 폐쇄루프(30)에 일 측에만 장착될 수 있음을 밝힌다. At this time, the on-off valve 60 reveals that it can be mounted only on one side to the closed loop 30 located before and after the waste heat recovery device (20).

상기 폐열회수장치(20)와 연결되는 비상냉각 백업루프(70)는 플랫폼 비상 종료, 폐열회수장치의 열 매체 흐름 상태가 최저상태로 떨어진 경우, 입·출구 온오프 밸브의 작동 오류, 폐열회수장치의 내부 온도가 설정값을 초과할 경우 상기 폐쇄루프(30)를 대신하여 열 매체를 순환시키는 역할을 수행하게 된다. Emergency cooling backup loop 70 is connected to the waste heat recovery device 20, the platform emergency shutdown, when the heat medium flow state of the waste heat recovery device falls to the minimum state, the operation error of the inlet / outlet on-off valve, waste heat recovery device When the internal temperature of the exceeds the set value it serves to circulate the heat medium in place of the closed loop (30).

즉 상기 비상냉각 백업루프(70)는 폐쇄루프(30)를 통한 열 매체의 순환이 불가능한 상태에서 상기 폐쇄루프(30)를 대신하여 열 매체를 순환시킬 수 있도록 한 것이다. That is, the emergency cooling backup loop 70 may circulate the heat medium instead of the closed loop 30 in a state where circulation of the heat medium through the closed loop 30 is impossible.

상기 비상냉각 백업루프(70)에 장착되는 비상냉각 펌프(80)는 플랫폼 비상 종료, 폐열회수장치의 열 매체 흐름 상태가 최저상태로 떨어진 경우, 입·출구 온오프 밸브의 작동 오류, 폐열회수장치의 내부 온도가 설정값을 초과할 경우 상기 비상냉각 백업루프(70)에 열 매체를 순환시키는 역할을 수행하게 된다. The emergency cooling pump 80 mounted on the emergency cooling backup loop 70 has a platform emergency termination, an operation error of the inlet / outlet on / off valve when the state of the heat medium flow of the waste heat recovery device falls to a minimum state, and a waste heat recovery device. When the internal temperature exceeds the set value serves to circulate the heat medium in the emergency cooling backup loop (70).

즉 상기 비상냉각 백업루프(70)는 폐쇄루프(30)를 통한 열 매체의 순환이 불가능한 상태에서 상기 폐열회수장치(20)를 통해 공급되는 열 매체를 비상냉각 백업루프(70)에 순환시킬 수 있도록 한 것이다. That is, the emergency cooling backup loop 70 may circulate the heat medium supplied through the waste heat recovery device 20 to the emergency cooling backup loop 70 in a state where circulation of the heat medium through the closed loop 30 is impossible. It would be.

그리고 본원발명에서 상기 비상냉각 펌프(70)는 전원이 나갔을 경우에도 자체 전력 공급이 가능하는 직류전원펌프를 택일하여 구성된다. And in the present invention, the emergency cooling pump 70 is configured by selecting a DC power pump that can supply its own power even when the power is out.

상기 폐열회수장치(20)의 전, 후에 위치한 비상냉각 백업루프(70)에 장착되는 온/오프 밸브(90)는 비상냉각 백업루프(70)를 따라 순환하는 열 매체의 순환 또는 정지역할을 수행하게 된다. The on / off valve 90 mounted on the emergency cooling backup loop 70 located before and after the waste heat recovery device 20 performs circulation or static area circulation of the heat medium circulating along the emergency cooling backup loop 70. Done.

즉 상기 온/오프 밸브(90)는 폐쇄루프(30)를 통한 열 매체의 순환이 불가능한 상태에서 상기 비상냉각 백업루프(70)를 개방하여 열 매체를 비상냉각 백업루프(70)에 순환되도록 하고 상기 폐쇄루프(30)가 정상작동하면 비상냉각 백업루프(70)를 폐쇄하도록 한 것이다.
That is, the on / off valve 90 opens the emergency cooling backup loop 70 in a state in which circulation of the heat medium through the closed loop 30 is impossible, so that the heat medium is circulated in the emergency cooling backup loop 70. When the closed loop 30 operates normally, the emergency cooling backup loop 70 is closed.

상기와 같이 구성되는 폐열회수장치의 과열방지를 위한 비상냉각시스템의 실시 예를 참조로 설명하면 다음과 같다. Referring to the embodiment of the emergency cooling system for preventing overheating of the waste heat recovery device configured as described above are as follows.

먼저 폐열회수장치(20)와, 상기 폐열회수장치(20)와 연결되고 열 매체가 순환하는 폐쇄루프(30)와, 상기 폐쇄루프(30)에 배치되는 공정히터(40)와, 상기 폐쇄루프(30)에 장착되고 열 매체를 순환시키는 폐열회수펌프(50)와, 상기 폐열회수장치(20)의 전, 후에 위치한 폐쇄루프(30)에 장착되는 온오프밸브(60)와, 상기 폐열회수장치(20)와 연결되고 상기 폐열회수펌프(50)의 작동불능시 열 매체가 순환되는 비상냉각 백업루프(70)와, 상기 비상냉각 백업루프(70)에 장착되고 상기 폐열회수펌프(50)의 작동불능 시 열 매체를 비상냉각 백업루프(70)에서 순환시키는 비상냉각 펌프(80)와, 상기 폐열회수장치(20)의 전, 후에 위치한 비상냉각 백업루프(70)에는 온/오프 밸브(90)를 장착하여 폐열회수장치의 과열방지를 위한 비상냉각시스템(10)의 구성을 완료한다. First, the waste heat recovery apparatus 20, a closed loop 30 connected to the waste heat recovery apparatus 20 and circulating a heat medium, a process heater 40 disposed in the closed loop 30, and the closed loop. A waste heat recovery pump (50) mounted to (30) to circulate the heat medium, an on-off valve (60) mounted to a closed loop (30) located before and after the waste heat recovery device (20), and the waste heat recovery Emergency cooling backup loop 70 is connected to the device 20 and the heat medium is circulated when the waste heat recovery pump 50 is inoperable, and mounted in the emergency cooling backup loop 70 and the waste heat recovery pump 50. The emergency cooling pump 80 for circulating the heat medium in the emergency cooling backup loop 70 and the emergency cooling backup loop 70 located before and after the waste heat recovery device 20 are provided with an on / off valve. 90) to complete the configuration of the emergency cooling system 10 to prevent overheating of the waste heat recovery device.

그리고 상기 폐열회수장치(20)와 폐열회수펌프(50)를 작동시키고 폐열회수장치(20)의 전, 후에 위치한 온오프밸브(60)를 개방한다. Then, the waste heat recovery device 20 and the waste heat recovery pump 50 are operated to open the on / off valve 60 located before and after the waste heat recovery device 20.

다음으로 상기 폐열회수장치(20)에서 공급되는 열을 흡수한 후 열 매체는 상기 폐열회수펌프(50)의 작동에 따라 온오프밸브(60)를 거쳐 공정히터(40)를 통과하면서 열 교환을 통해 열을 전달한다. Next, after absorbing the heat supplied from the waste heat recovery device 20, the heat medium passes through the process heater 40 through the on-off valve 60 in accordance with the operation of the waste heat recovery pump 50 to exchange heat. Heat transfer through.

그리고 상기 공정히터(40)를 거친 열 매체는 폐쇄루프(30)를 따라서 폐열회수펌프(50)와 온오프밸브(60)를 거쳐 폐열회수장치(20)로 이동하여 열을 공급받은 후 상기와 같은 과정을 반복적으로 거치게 된다. Then, the heat medium passing through the process heater 40 is moved to the waste heat recovery device 20 through the waste heat recovery pump 50 and the on-off valve 60 along the closed loop 30 to receive heat, and The same process is repeated repeatedly.

다음으로 상기와 같은 상태에서 플랫폼 비상 종류(폐열회수펌프를 비롯하여 플랫폼 전체 대부분 장비들이 종료하게 될 경우), 폐열회수장치의 열 매체 흐름 상태가 최저상태로 떨어진 경우(폐열회수장치의 콘센트 쪽에 배관 문제가 생겨 누출(Leakage)가 생겼을 경우), 입·출구 온오프 밸브의 작동 오류, 폐열회수장치의 내부 온도가 설정값을 초과할 경우가 발생하면 상기 비상냉각 백업루프(70)와 비상냉각 펌프(80) 및 온/오프 밸브(90)는 작동하게 된다. Next, when the emergency state of the platform (most of the entire equipment including the waste heat recovery pump will be shut down) in the above state, and the heat medium flow state of the waste heat recovery device has fallen to the minimum state (piping problem at the outlet of the waste heat recovery device) Occurs when leakage occurs, the operation error of the inlet / outlet on / off valve, the internal temperature of the waste heat recovery device exceeds the set value, the emergency cooling backup loop 70 and the emergency cooling pump ( 80 and the on / off valve 90 are activated.

즉 상기 폐쇄루프(30)를 따라 열 매체의 이동이 불가능해지면, 상기 폐열회수장치(20)의 전, 후에 위치한 비상냉각 백업루프(70)의 온/오프 밸브(90)는 개방되고, 상기 폐열회수장치(20)에서 공급되는 열을 흡수한 후 열 매체는 상기 비상냉각 펌프(80)의 작동에 따라 온/오프 밸브(90)를 거쳐 비상냉각 백업루프(70)를 순환하게 되는 것이다.That is, when the movement of the thermal medium along the closed loop 30 becomes impossible, the on / off valve 90 of the emergency cooling backup loop 70 located before and after the waste heat recovery device 20 is opened, and the waste heat After absorbing the heat supplied from the recovery device 20, the heat medium circulates through the emergency cooling backup loop 70 through the on / off valve 90 according to the operation of the emergency cooling pump 80.

이와 같이 본원발명의 폐열회수장치와 열 매체 냉각방법은 플랫폼 비상 종료, 폐열회수장치의 열 매체 흐름 상태가 최저상태로 떨어진 경우, 입·출구 온오프 밸브의 작동 오류, 폐열회수장치의 내부 온도가 설정값을 초과할 경우 직류전원을 이용하는 비상냉각 펌프를 통해 열 매체를 비상냉각 백업루프에 연속해서 순환시킬 수 있는 장점이 있을 뿐만 아니라 고온의 열 매체와 폐열회수장치에서 발생할 수 있는 과열로 인한 안전사고를 방지할 수 있는 장점을 얻게 되는 것이다. As described above, the waste heat recovery apparatus and the heat medium cooling method of the present invention have an error in operating the inlet / outlet on / off valves and the internal temperature of the waste heat recovery apparatus when the emergency exit of the platform, the heat medium flow state of the waste heat recovery apparatus drops to the minimum state. In case of exceeding the set value, the emergency cooling pump using DC power can circulate the heat medium continuously to the emergency cooling backup loop, and the safety due to overheating that can occur in high temperature heat medium and waste heat recovery system. You will have the advantage of preventing accidents.

이상에서 첨부된 도면을 참조하여 본 발명인 폐열회수장치의 과열방지를 위한 비상냉각시스템을 설명함에 있어 특정형상 및 방향을 위주로 설명하였으나, 본 발명은 당업자에 의하여 다양한 변형 및 변경이 가능하고, 이러한 변형 및 변경은 본 발명의 권리범위에 포함되는 것으로 해석되어야 한다.
In the above description of the emergency cooling system for preventing overheating of the waste heat recovery apparatus of the present invention with reference to the accompanying drawings, the present invention has been described with a particular shape and direction, the present invention can be variously modified and changed by those skilled in the art, such a modification And changes should be construed as being included in the scope of the present invention.

10 : 폐열회수장치의 과열방지를 위한 비상냉각시스템,
20 : 폐열회수장치, 30 : 폐쇄루프,
40 : 공정히터, 50 : 폐열회수펌프,
60 : 온오프밸브, 70 : 비상냉각 백업루프,
80 : 비상냉각 펌프, 90 : 온/오프 밸브. 10: emergency cooling system to prevent overheating of waste heat recovery system,
20: waste heat recovery device, 30: closed loop,
40: process heater, 50: waste heat recovery pump,
60: on-off valve, 70: emergency cooling backup loop,
80: emergency cooling pump, 90: on / off valve.

Claims (3)

폐열회수장치(20)와;
상기 폐열회수장치(20)와 연결되고 열 매체가 순환하는 폐쇄루프(30)와;
상기 폐쇄루프(30)에 배치되는 공정히터(40)와;
상기 폐쇄루프(30)에 장착되고 열 매체를 순환시키는 폐열회수펌프(50)와;
상기 폐열회수장치(20)의 전, 후에 위치한 폐쇄루프(30)에 장착되는 온오프밸브(60)와;
상기 폐열회수장치(20)와 연결되고 상기 폐열회수펌프(50)의 작동불능 시 열 매체가 순환되는 비상냉각 백업루프(70)와;
상기 비상냉각 백업루프(70)에 장착되고 상기 폐열회수펌프(50)의 작동불능 시 열 매체를 비상냉각 백업루프(70)에서 순환시키는 비상냉각 펌프(80); 를 포함하여 이루어진 것을 특징으로 하는 폐열회수장치의 과열방지를 위한 비상냉각시스템.
Waste heat recovery apparatus 20;
A closed loop 30 connected to the waste heat recovery device 20 and circulating a heat medium;
A process heater (40) disposed in the closed loop (30);
A waste heat recovery pump (50) mounted to the closed loop (30) to circulate the heat medium;
An on-off valve (60) mounted to a closed loop (30) located before and after the waste heat recovery device (20);
An emergency cooling backup loop 70 connected to the waste heat recovery device 20 and configured to circulate a heat medium when the waste heat recovery pump 50 is inoperable;
An emergency cooling pump (80) mounted to the emergency cooling backup loop (70) and circulating a heat medium in the emergency cooling backup loop (70) when the waste heat recovery pump (50) is inoperative; Emergency cooling system for preventing overheating of the waste heat recovery device, characterized in that made.
청구항 1에 있어서,
상기 폐열회수장치(20)의 전, 후에 위치한 비상냉각 백업루프(70)에는 온/오프 밸브(90)가 장착되는 것을 특징으로 하는 폐열회수장치의 과열방지를 위한 비상냉각시스템.
The method according to claim 1,
Emergency cooling system for preventing overheating of the waste heat recovery device, characterized in that the on / off valve 90 is installed in the emergency cooling backup loop (70) located before and after the waste heat recovery device (20).
청구항 1에 있어서,
상기 비상냉각 백업루프(70)와 비상냉각 펌프(80)는 플랫폼 비상 종료, 폐열회수장치의 열 매체 흐름 상태가 최저상태로 떨어진 경우, 입·출구 온오프 밸브의 작동 오류, 폐열회수장치의 내부 온도가 설정값을 초과할 경우에 작동되도록 한 것을 특징으로 하는 폐열회수장치의 과열방지를 위한 비상냉각시스템.The method according to claim 1,
The emergency cooling backup loop 70 and the emergency cooling pump 80 have an emergency exit of the platform, an operation error of the inlet / outlet on / off valve when the state of the heat medium flow of the waste heat recovery device drops to a minimum state, and the inside of the waste heat recovery device. Emergency cooling system for preventing overheating of the waste heat recovery device, characterized in that when the temperature exceeds the set value.
KR1020120098399A 2012-09-05 2012-09-05 For the emergency cooling system to prevent overheating of whru KR20140031724A (en)

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