KR20170105596A - Preheating of untreated water in power plants - Google Patents

Preheating of untreated water in power plants Download PDF

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KR20170105596A
KR20170105596A KR1020177023085A KR20177023085A KR20170105596A KR 20170105596 A KR20170105596 A KR 20170105596A KR 1020177023085 A KR1020177023085 A KR 1020177023085A KR 20177023085 A KR20177023085 A KR 20177023085A KR 20170105596 A KR20170105596 A KR 20170105596A
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water
steam
wastewater
power plant
untreated
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KR1020177023085A
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Korean (ko)
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미햐엘 헤겔
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지멘스 악티엔게젤샤프트
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    • 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
    • F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
    • F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
    • 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
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/28—Feed-water heaters, i.e. economisers or like preheaters for direct heat transfer, e.g. by mixing water and steam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D7/00—Auxiliary devices for promoting water circulation
    • F22D7/04—Injectors for water or steam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D7/00—Auxiliary devices for promoting water circulation
    • F22D7/12—Control devices
    • 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
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/16—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Physical Water Treatments (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

본 발명은 물/증기 회로(2)를 갖는 발전소(1)에서 미처리수를 예열하는 방법으로서, 발전소(1)는 증기 생성기(3), 증기 터빈(4), 및 적어도 일부가 증기 생성기(3)를 증기 터빈(4)에 연결하는 증기 선로(5)들을 포함하는 방법에 관한 것이며, 탈이온수를 생성하기 위한 미처리수는 물/증기 회로(2)로부터의 폐수에 의해 가열되며 폐수는 미처리수를 가열하기 위해 미처리수에 추가된다. 본 발명은 또한 발전소(1)에 관한 것이다.The present invention relates to a method of preheating raw water in a power plant 1 having a water / steam circuit 2, wherein the power plant 1 comprises a steam generator 3, a steam turbine 4 and at least a portion of the steam generator 3 ) Steam line (5) connecting the steam turbine (4) to the steam turbine (4), the raw water for producing deionized water is heated by the wastewater from the water / steam circuit (2) Is added to the untreated water to heat it. The present invention also relates to a power plant (1).

Figure P1020177023085
Figure P1020177023085

Description

발전소에서의 미처리수의 예열Preheating of untreated water in power plants

본 발명은 특히 발전소에서 미처리수를 예열하기 위한 방법에 관한 것이다. 본 발명은 또한 물/증기 회로를 갖는 발전소에 관한 것이다.The present invention particularly relates to a method for preheating raw water in a power plant. The present invention also relates to a power plant having a water / steam circuit.

응축물의 회수가 없거나 부분적으로 있는 증기 추출이 이루어지는 발전소의 경우에, 증기 추출에 기인하는 회로 손실을 보상하기 위해서 대량의 탈이온물, 즉 탈염(또한, 탈이온)수가 필요한 경우가 자주 있다. 특히, 낮은 외부 온도에서, 미처리수는 탈이온수의 생산에 필요한 온도를 갖지 않는다. 이 경우에 지금까지는, 미처리수를 증기에 의해 또는 전기적으로 예열하였기 때문에, 기계 또는 전기적 장비 자원에 대한 요구가 높거나, 효율을 저하시키거나, 소내 부하를 증가시켰다.In the case of power plants where there is no or partial recovery of condensate, a large amount of deionized water, or desalination (also deionization), is often required to compensate for circuit losses due to steam extraction. In particular, at low external temperatures, the untreated water does not have the temperature required for the production of deionized water. In this case, until now, since the untreated water has been preheated by steam or electrically, there has been a high demand for mechanical or electrical equipment resources, decreased efficiency, or increased internal combustion load.

본 발명의 목적은 자원 요구의 상당한 감소가 달성되도록 상기 방법 및 상기 장치를 더 개발하는 것이다.It is an object of the present invention to further develop the method and apparatus so that a significant reduction in resource requirements is achieved.

이러한 목적은 청구항 1에 청구된 바와 같이 미처리수를 예열하는 방법 및 청구항 7에 청구된 바와 같은 발전소에 의해 본 발명에 따라 달성된다. 본 발명의 유리한 개선이 각각의 종속 청구항에 규정되어 있다. 물/증기 회로를 갖는 발전소에서 미처리수를 예열하는 방법으로서, 발전소는 증기 발생기, 증기 터빈, 및 적어도 일부가 증기 발생기를 증기 터빈에 연결하는 증기 선로들을 포함하는 방법의 경우에, 탈이온수의 생성을 위한 미처리수는 물/증기 회로로부터의 폐수에 의해 가열되고, 폐수가 미처리수를 가열하기 위해 미처리수와 혼합된다는 점에서, 폐수의 잔류 열이 활용되고 발전소의 소내 부하가 감소되거나 효율이 증가되게 된다.This object is achieved according to the invention by a method for preheating raw water as claimed in claim 1 and by a power plant as claimed in claim 7. Advantageous refinements of the invention are set forth in the respective dependent claims. CLAIMS 1. A method for preheating raw water in a power plant having a water / steam circuit, the power plant comprising a steam generator, a steam turbine, and a steam line connecting at least a portion of the steam generator to the steam turbine, The untreated water for the waste water is heated by the wastewater from the water / steam circuit and the residual heat of the wastewater is utilized and the intracavity load of the power plant is reduced or the efficiency is increased in that the wastewater is mixed with the untreated water to heat the untreated water .

이 경우의 폐수는 물/증기 회로를 떠나며 일반적으로 냉각수에 방출되거나 적절한 재냉각 후에 폐기되는 물이다. 폐수를 위한 용기 및 관련 펌프 및 냉각수에 대한 수송관은 이미 존재한다. 부속품을 갖는 미처리수 혼합 장치에 선로 분지(branch)만을 추가하면 된다.The wastewater in this case is water leaving the water / steam circuit and generally discharged into the cooling water or discarded after appropriate re-cooling. Containers for waste water and related pumps and pipelines for cooling water already exist. Only the line branch may be added to the untreated water mixing device with accessories.

폐수가 미처리수를 가열하기 위해 미처리수와 혼합되는 경우, 저압 증기에 의한 가열의 경우와 같이 열 손실이 발생하지 않는다. 또한, 폐수를 적절히 선택하면 폐수를 미처리수로서 다시 사용할 수 있다.When the wastewater is mixed with the untreated water to heat the untreated water, no heat loss occurs as in the case of heating by the low-pressure steam. In addition, if the wastewater is appropriately selected, the wastewater can be reused as untreated water.

이 경우에는 폐수가 증기 발생기, 특히 증기 드럼으로부터의 배출수(blowdown water)라면 편리하다.In this case it is convenient if the wastewater is a blowdown water from a steam generator, in particular a steam drum.

대안적으로 또는 부가적으로, 폐수가 낮은 지점에서 자동으로 배수되는 증기 선로로부터의 응축물이라면 유리할 수 있다.Alternatively or additionally, it may be advantageous if the wastewater is a condensate from a steam line that is automatically drained at a low point.

폐수와 미처리수의 양호한 혼합과 관련하여, 폐수가 미처리수에 분배된다면 유리하다.With respect to good mixing of wastewater and untreated water, it is advantageous if the wastewater is distributed to untreated water.

또한, 배출수 양의 변경에 의해 미처리수 온도가 폐쇄 루프 제어된다면 유리하다.It is also advantageous if the untreated water temperature is closed-loop controlled by changing the amount of drain water.

특히, 예열을 위한 열 수요에 기초하여, 물 화학 요건에 기초하여 요구되는 것보다 많은 물이 배출된다면 유리할 수 있다. 그러나, 오직 이 경우에 있어서, 이 경우에는 추가적인 열이 증기 발생기로부터 추출되기 때문에 효율에 있어서 단지 상대적으로 작은 감소도 있다. 전기적인 소내 부하는 증가되지 않는다. 어떤 경우든, 미처리수 온도의 폐쇄 루프 제어는 보일러 배출의 변화에 의해 영향을 받을 수 있다. 따라서 탈이온수의 생산을 위한 최적의 온도를 설정할 수도 있다.In particular, based on the heat demand for preheating, it may be advantageous if more water is discharged than required based on water chemistry requirements. However, in this case only in this case, there is also a relatively small reduction in efficiency because additional heat is extracted from the steam generator in this case. Electrical intracavity load is not increased. In any case, the closed loop control of the raw water temperature can be influenced by changes in boiler emissions. It is therefore possible to set an optimum temperature for the production of deionized water.

물/증기 회로를 갖는 본 발명에 따른 발전소로서, 발전소는 증기 발생기, 증기 터빈, 및 적어도 일부가 증기 발생기를 증기 터빈에 연결하는 증기 선로들, 미처리수 혼합 장치 및 물/증기 회로로부터의 폐수를 위한 용기를 포함하는 발전소의 경우에, 미처리수 혼합 장치 및 물/증기 회로로부터의 폐수를 위한 용기는 서로 유체 연결되고, 미처리수에 폐수를 분배하기 위한 장치가 미처리수 혼합 장치에 제공된다. 미처리수에의 폐수의 분배는 혼합을 개선한다.A power plant in accordance with the present invention having a water / steam circuit, the power plant comprising a steam generator, a steam turbine, and at least a portion of the wastewater from the steam lines connecting the steam generator to the steam turbine, the raw water mixer and the water / In the case of a power plant comprising a vessel for the treatment of untreated water, the raw water mixing device and the vessel for the wastewater from the water / steam circuit are fluidly connected to each other and an apparatus for distributing the wastewater to the untreated water is provided in the untreated water mixing apparatus. Distribution of wastewater to untreated water improves mixing.

이 경우에는, 물/증기 회로로부터의 폐수를 위한 용기가 증기 발생기에 연결되어 있다면 편리하다. 특히, 증기 발생기의 증기 드럼(steam drum)에서 배출수가 규칙적으로 생성된다.In this case, it is convenient if the vessel for the wastewater from the water / steam circuit is connected to the steam generator. In particular, steam is regularly produced in the steam drum of the steam generator.

또한, 물/증기 회로로부터의 폐수를 위한 용기가 증기 선로에 연결되어 있다면 편리하다. 증기 선로는 그들의 낮은 지점에서 자동으로 배수되고, 생성된 응축물은 일반적으로 오염되지 않는다.It is also convenient if the vessel for the wastewater from the water / steam circuit is connected to the steam line. The steam lines are automatically drained from their low point, and the resulting condensate is generally not contaminated.

본 발명에 따른 발전소의 추가의 유리한 실시예에서, 미처리수 온도의 폐쇄 루프 제어를 위한 폐쇄 루프 제어 장치가 제공된다. 따라서 탈이온수의 생성을 위한 최적 온도가 설정될 수 있다.In a further advantageous embodiment of the plant according to the invention, a closed loop control device for closed loop control of the raw water temperature is provided. Thus, an optimum temperature for the production of deionized water can be set.

이 경우, 미처리수 온도를 위한 폐쇄 루프 제어가 배출수 양의 개방 루프 제어를 포함한다면 편리하다.In this case, it is convenient if the closed loop control for the raw water temperature includes an open-loop control of the drainage amount.

증기 선로로부터의 응축물과 달리, 배출수 양은 용이하게 설정된다.Unlike condensate from steam lines, the amount of drain water is easily set.

본 발명은 도면에 기초하여 더 상세하게 예시적으로 설명된다. 도면에는 개략적으로 표시되어 있으며 축척대로 되어 있지 않다.The invention is illustrated by way of example in more detail on the basis of the figures. The drawings are schematically shown and are not to scale.

도 1은 발전소이다.
도 2는 본 발명에 따른 미처리수를 예열하기 위한 방법이다.1 is a power plant.
2 is a method for preheating untreated water according to the present invention.

도 1은 본 발명에 따른 발전소(1)를 도시한다. 도 1에 따른 발전소(1)는 가스 및 증기 터빈 플랜트(gas and steam turbine plant)로서 설계되고, 가스 터빈 설비(11) 및 증기 터빈 설비(12)를 포함한다. 가스 터빈 설비(11)는 결합된 공기 압축기(14)를 갖는 가스 터빈(13), 및 가스 터빈(13)으로부터 상류의, 압축기(14)의 압축 공기 선로(16)에 연결되는 연소실(15)을 포함한다. 가스 터빈(13)과 공기 압축기(14), 및 발생기(17)는 공통 축(18) 상에 배치된다. 연료 공급은 연료 선로(40)를 통해 수행된다.Fig. 1 shows a power plant 1 according to the present invention. The power plant 1 according to FIG. 1 is designed as a gas and steam turbine plant and includes a gas turbine installation 11 and a steam turbine installation 12. The gas turbine installation 11 includes a gas turbine 13 having an associated air compressor 14 and a combustion chamber 15 connected to the compressed air line 16 of the compressor 14 upstream from the gas turbine 13, . The gas turbine 13, the air compressor 14, and the generator 17 are disposed on a common axis 18. The fuel supply is performed through the fuel line 40.

증기 터빈 설비(12)는, 결합된 발생기(19)를 갖는 증기 터빈(4), 및 물/증기 회로(2) 내의, 증기 터빈(4)의 하류의 응축기(20), 및 폐열 증기 발생기(3)를 포함한다. 도 1에서, 증기 터빈(4)은 매우 단순화된 형태로 표현되어 있으며, 일반적으로 대형 플랜트의 경우에는 전형적으로 공통 축(21)을 통해 발생기(19)를 구동하는 도 1에 도시되지 않은 복수의 압력 단을 포함한다.The steam turbine installation 12 includes a steam turbine 4 having a combined generator 19 and a condenser 20 downstream of the steam turbine 4 in the water / steam circuit 2 and a waste heat generator 3). 1, the steam turbine 4 is represented in a very simplified form, and in the case of a large plant, a plurality of steam turbines 4, typically not shown in FIG. 1, which drive the generator 19 via the common axis 21 Pressure stage.

폐열 증기 발생기(3)는 또한 매우 단순화된 형태로 표현된다. 가스 터빈(13)에서 팽창된 작동 유체를 폐열 증기 발생기(3)에 공급하기 위해, 폐열 증기 발생기(3)의 입구(23)에 연결된 폐가스 선로(waste-gas line)(22)가 있다. 가스 터빈(13)으로부터의 팽창된 작동 유체는 더 상세하게 나타내지 않는 연도의 방향으로 그 출구(24)를 통해 폐열 증기 발생기(3)를 떠난다.The waste heat steam generator 3 is also expressed in a very simplified form. There is a waste-gas line 22 connected to the inlet 23 of the waste heat steam generator 3 for supplying the working fluid expanded in the gas turbine 13 to the waste heat steam generator 3. The expanded working fluid from the gas turbine 13 leaves the waste heat steam generator 3 through its outlet 24 in the direction of the flue not shown in more detail.

급수 용기/탈기기(25)에는 응축물 펌프 유닛(27)이 연결된 응축물 선로(26)를 통해 응축기(20)로부터 응축물이 공급될 수 있다. 도 1의 물/증기 회로(2)에서의 급수 용기/탈기기(25)의 배치는 단지 예시로서 표현되어 있다. 급수 펌프(28)는 급수 용기/탈기기(25)로부터 유출되는 급수를 적절한 압력 수준이 되게 한다. 급수는 증기 드럼(30)의 출구측에 연결되는 급수 예열기(29)를 통해 폐열 증기 발생기(3)의 대응하는 압력 단에 공급된다. 증기 드럼(30)은 물/증기 회로를 형성하기 위해 폐열 증기 발생기(3)에 배치되는 증발기(31)에 연결된다. 생증기를 제거하기 위해, 증기 드럼(30)은 폐열 증기 발생기(3)에 배치된 과열기(32)에 연결되고, 출력측에서 증기 선로(5)를 통해 증기 터빈(4)의 증기 입구(33)에 연결된다.Condensate can be supplied to the water supply vessel / deaerator 25 from the condenser 20 through the condensate line 26 to which the condensate water pump unit 27 is connected. The arrangement of the water supply vessel / deaerator 25 in the water / steam circuit 2 of Fig. 1 is represented by way of example only. The water supply pump 28 makes the water discharged from the water supply container / deaerator 25 at an appropriate pressure level. The feed water is supplied to a corresponding pressure end of the waste heat steam generator 3 through a water preheater 29 connected to the outlet side of the steam drum 30. The steam drum 30 is connected to an evaporator 31 disposed in the waste heat steam generator 3 to form a water / steam circuit. The steam drum 30 is connected to the superheater 32 disposed in the waste heat steam generator 3 and connected to the steam inlet 33 of the steam turbine 4 via the steam line 5 at the output side, Lt; / RTI >

증기 터빈(4) 상에는 증기 공급 시스템용 증기 추출부(34)가 예시적으로 도시되어 있다. 원칙적으로, 증기 추출부는 증기 터빈의 다양한 지점뿐만 아니라 폐열 증기 발생기(3)의 영역에도 제공될 수 있다. 예시적으로, 응축물 복귀부(35)는 응축 선로(26)로 들어간다.On the steam turbine 4, a steam extractor 34 for the steam supply system is illustrated by way of example. In principle, the steam extractor may be provided in the region of the waste heat steam generator 3 as well as at various points of the steam turbine. Illustratively, the condensate returning portion 35 enters the condensing line 26.

발전소(1)는 추가로 본 발명에 따라 서로 유체 연결되는 미처리수 혼합 장치(6) 및 물/증기 회로(2)로부터의 폐수를 위한 용기(7)를 포함한다. 미처리수에 폐수를 분배하기 위한 장치(8)가 미처리수 혼합 장치(6)에 제공된다.The power plant 1 further comprises an untreated water mixing device 6 fluidly connected to one another in accordance with the invention and a vessel 7 for wastewater from the water / steam circuit 2. An apparatus (8) for distributing wastewater to untreated water is provided in an untreated water mixing apparatus (6).

물/증기 회로(2)로부터의 폐수를 위한 용기(7)는 증기 발생기(3) 및 거기서 특히 증기 드럼(30) 및 증기 선로(5)에 연결된다.The vessel 7 for the wastewater from the water / steam circuit 2 is connected to the steam generator 3 and, in particular, to the steam drum 30 and the steam line 5.

미처리수 온도의 폐쇄 루프 제어를 위해, 한편에서는 온도 센서(36)에 의해 현재 미처리수 온도를 감지하고 다른 한편 용기(7)와 미처리수 혼합 장치(6) 사이의 물 선로(41)에 연결되는 펌프(37)에 의해 용기(7)로부터의 적절한 양의 폐수를 미처리수 혼합 장치(6)에 반송하는 폐쇄 루프 제어 장치(9)가 제공된다. 미처리수 혼합 장치(6)에서의 미처리수의 예열을 위한 열 수요가 용기(7)에 존재하는 물의 양에 의해 달성될 수 있는 것을 초과하는 경우, 물 화학 요건에 기초하여 이것이 필요하지 않은 경우라도, 대응하는 개방 루프 제어부(10)에 의해 배출수 양이 증가한다.For the closed-loop control of the raw water temperature, on the one hand it senses the current untreated water temperature by the temperature sensor 36 and on the other hand it is connected to the water line 41 between the vessel 7 and the raw water mixing device 6 A closed loop control device 9 for conveying an appropriate amount of wastewater from the container 7 to the raw water mixing device 6 by the pump 37 is provided. If the heat demand for preheating the untreated water in the raw water mixing device 6 exceeds that which can be achieved by the amount of water present in the vessel 7, even if this is not necessary based on the water chemistry requirement , The amount of the drainage water is increased by the corresponding open-loop control unit (10).

최종적으로, 도 1은 미처리수 혼합 장치(6)와 대응하는 펌프(39)를 갖는 급수 용기/탈기기(25) 사이에 배치되는, 탈염부를 포함하는 물 조절용 장치(38)를 도시한다. 여기서, 또한 물/증기 회로(2)로의 탈이온수의 송입이 단지 예시적으로 표현된다.1 shows a water control device 38 including a desalination part, which is disposed between a water supply vessel / deaerator 25 having an untreated water mixing device 6 and a pump 39 corresponding thereto. Here again, the feeding of deionized water to the water / vapor circuit 2 is merely illustrative.

도 2는 탈이온수 생성을 위한 미처리수가 물/증기 회로(2)로부터의 폐수에 의해 가열되는 발전소(1)에서 미처리수를 예열하는 방법을 도시한다. 제1 단계(42)에서, 미처리수의 온도가 조금이라도 상승될 필요가 있는지가 확인된다. 그렇지 않은 경우, 방법은 종료된다(43). 미처리수의 온도가 상승되어야 하는 경우, 제2 단계(44)에서 존재하는 폐수의 양이 이 목적에 충분한지가 확인된다. 만일 그렇다면, 제3 단계(45)에서, 폐수는 물/증기 회로(2)로부터의 폐수를 위한 용기(7)로부터 미처리수 혼합 장치(6)로 보내진다. 양이 불충분한 경우, 제3 단계(45) 이외에, 추가적인 배출이 수행되는 제4 단계(46)가 실행되고, 그 결과 용기(7)로의 물 유입이 증가된다.2 shows a method for preheating raw water in a power plant 1 in which untreated water for producing deionized water is heated by wastewater from a water / steam circuit 2. In a first step 42, it is determined whether the temperature of the untreated water needs to be raised even a little. Otherwise, the method ends (43). If the temperature of the untreated water is to be increased, it is ascertained whether the amount of wastewater present in the second stage 44 is sufficient for this purpose. If so, in the third step 45, the wastewater is sent from the vessel 7 for the wastewater from the water / steam circuit 2 to the raw water mixing device 6. If the amount is insufficient, in addition to the third step 45, a fourth step 46 is carried out in which an additional discharge is carried out, resulting in an increase in the inflow of water into the vessel 7.

Claims (11)

물/증기 회로(2)를 갖는 발전소(1)에서 미처리수를 예열하는 방법으로서, 발전소(1)는 증기 발생기(3), 증기 터빈(4), 및 적어도 일부가 증기 발생기(3)를 증기 터빈(4)에 연결하는 증기 선로(5)들을 포함하고, 탈이온수의 생성을 위한 미처리수가 물/증기 회로(2)로부터의 폐수에 의해 가열되는 방법에 있어서,
폐수는 미처리수를 가열하기 위해 미처리수와 혼합되는 것을 특징으로 하는 방법.A method for preheating raw water in a power plant (1) having a water / steam circuit (2), the power plant (1) comprising a steam generator (3), a steam turbine (4), and at least a portion of the steam generator A steam turbine comprising steam lines (5) connecting to a turbine (4), in which a raw water for the production of deionized water is heated by wastewater from a water / steam circuit (2)
Wherein the wastewater is mixed with untreated water to heat the untreated water. 제1항에 있어서, 폐수는 증기 발생기(2)로부터의 배출수(blowdown water)인, 방법.The method of claim 1, wherein the wastewater is blowdown water from the steam generator (2). 제1항에 있어서, 폐수는 증기 선로(5)로부터의 응축물인, 방법.The method according to claim 1, wherein the wastewater is a condensate from the steam line (5). 제1항 내지 제3항 중 어느 한 항에 있어서, 폐수는 미처리수에 분배되는, 방법.4. The method according to any one of claims 1 to 3, wherein the wastewater is distributed to the untreated water. 제1항 내지 제4항 중 어느 한 항에 있어서, 미처리수 온도는 배출수 양의 변경에 의해 폐쇄 루프 제어되는, 방법.The method according to any one of claims 1 to 4, wherein the untreated water temperature is closed-loop controlled by changing the amount of drain water. 제5항에 있어서, 예열을 위한 열 수요에 기초하여, 물 화학 요건에 기초하여 요구되는 것보다 더 많은 물이 배출되는, 방법.6. The method of claim 5 wherein more water is discharged than required based on water chemistry requirements, based on the heat demand for preheating. 물/증기 회로(2)를 갖는 발전소(1)로서, 발전소(1)는 증기 발생기(3), 증기 터빈(4), 및 적어도 일부가 증기 발생기(3)를 증기 터빈(4)에 연결하는 증기 선로(5)들, 미처리수 혼합 장치(6) 및 물/증기 회로(2)로부터의 폐수를 위한 용기(7)를 포함하는 발전소에 있어서,
미처리수 혼합 장치(6) 및 물/증기 회로(2)로부터의 폐수를 위한 용기(7)는 서로 유체 연결되고, 미처리수에 폐수를 분배하기 위한 장치(8)가 미처리수 혼합 장치(6)에 제공되는 것을 특징으로 하는 발전소(1).As a power plant 1 having a water / steam circuit 2, a power plant 1 includes a steam generator 3, a steam turbine 4, and at least a part of the steam generator 3, which connects the steam generator 3 to the steam turbine 4 A power plant comprising a steam line (5), an untreated water mixing device (6) and a vessel (7) for wastewater from a water / steam circuit (2)
The raw water mixing device 6 and the vessel 7 for the wastewater from the water / steam circuit 2 are fluidly connected to one another and an apparatus 8 for distributing the wastewater to raw water is connected to the raw water mixing device 6, (1). ≪ / RTI > 제7항에 있어서, 물/증기 회로(2)로부터의 폐수를 위한 용기(7)는 증기 발생기(3)에 연결되는, 발전소(1).8. A power plant (1) according to claim 7, wherein the vessel (7) for the wastewater from the water / steam circuit (2) is connected to the steam generator (3). 제7항에 있어서, 물/증기 회로(2)로부터의 폐수를 위한 용기(7)는 증기 선로(5)들에 연결되는, 발전소(1).8. A power plant (1) according to claim 7, wherein the vessel (7) for the wastewater from the water / steam circuit (2) is connected to the steam lines (5). 제7항 내지 제9항 중 어느 한 항에 있어서, 폐쇄 루프 제어 장치(9)가 미처리수 온도의 폐쇄 루프 제어를 위해 제공되는, 발전소(1).10. A power plant (1) according to any one of claims 7 to 9, wherein the closed loop control device (9) is provided for closed loop control of the raw water temperature. 제10항에 있어서, 미처리수 온도를 위한 폐쇄 루프 제어 장치(9)는 배출수 양의 개방 루프 제어부(10)를 포함하는, 발전소(1).11. The power plant (1) according to claim 10, wherein the closed loop control device (9) for the untreated water temperature comprises an open-loop control part (10) of the drainage amount.
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