KR880000050B1 - Apparatus of recovering of the waste energy - Google Patents

Apparatus of recovering of the waste energy Download PDF

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KR880000050B1
KR880000050B1 KR1019840007800A KR840007800A KR880000050B1 KR 880000050 B1 KR880000050 B1 KR 880000050B1 KR 1019840007800 A KR1019840007800 A KR 1019840007800A KR 840007800 A KR840007800 A KR 840007800A KR 880000050 B1 KR880000050 B1 KR 880000050B1
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water
low pressure
hot water
steam
pressure steam
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KR1019840007800A
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Korean (ko)
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KR860005182A (en
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요오이찌 이와나가
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미쯔비시주우 고오교오 가부시기가이샤
야노 다까시
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F22B1/1807—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines
    • 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
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/26—Steam-separating arrangements
    • 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
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/30—Technologies for a more efficient combustion or heat usage

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

The invention relates to an apparatus for recovering the waste heat generated from engines and boiler heaters. The apparatus includes a water preheating unit by use of the supercharging air energy for combustion, a hot water generating divider of the preheated water in the downstream of the waste gas, a low pressure steam generator in the gas stream, a steam separator from the steam-water of the generator, a high pressure steam generator by the waste gas closer to its source, and a recovering unit for the separated water from the separator. The produced steam is supplied for desired uses.

Description

폐열 회수장치Waste Heat Recovery Device

제1도는 종래의 폐열 회수장치를 표시한 기구도.1 is a mechanism diagram showing a conventional waste heat recovery apparatus.

제2도는 본 발명의 제1실시예를 표시한 폐열 회수장치의 기구도.2 is a mechanism diagram of a waste heat recovery apparatus showing the first embodiment of the present invention.

제3도는 본 발명의 제2의실시예를 표시한 기구도.3 is a mechanism diagram showing a second embodiment of the present invention.

＊ 도면의 주요부분에 대한 부호의 설명＊ Explanation of symbols on main parts of drawing

1 : 연소기기(디이젤기관) 2a : 열수(熱水)발생기구1: Combustion device (diesel engine) 2a: Hot water generator

2b : 저압기수(低압氣水)발생기구 2c : 고압증기 발생기구2b: low pressure water generator 2c: high pressure steam generator

4, 4' : 저압기수분리드럼 5 : 증기터어빈4, 4 ': Low pressure water separation drum 5: Steam turbine

8 : 히이팅 서어비스 기기 20 : 급수예열기구8: heating service equipment 20: water supply preheater

22 : 플래셔(flash boiler)22: flash boiler

본 발명은, 선박용 디이젤기관, 기타 내연기관, 보일러등의 연소기기에서 발생하는 폐열을 회수해서 발전용의 증기터어빈, 각종의 히이팅 서어비스기기등에 열원으로서 공급하는 폐열회수장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste heat recovery apparatus for recovering waste heat generated from combustion equipment such as diesel engines for ships, other internal combustion engines, boilers, and supplying them to a steam turbine for power generation, various heating service equipment, and the like as a heat source.

디이젤기관에 있어서의 2단 압력식의 폐열회수장치에 관한 종래예를 설명하면 제1도에 표시한 바와같이 급수펌프(12)에 의해서 가압된 급수(a)는 디이젤(1)으로부터 발생한 배기가스(b)의 하류쪽(b3)에 배설된 열수발생기구(2a)에 의해서 열수로 되고, 상기 열수의 분류(分流)(a1)는 감압밸브(10)를 개재해서 배기가스(b)의 중류(中流)쪽(b2)에 배설된 저압기수 발생기구(2b)에 의해서 저압증기를 함유한 포화열수가 되고, 또, 상기 열수의 분류(a2)는, 고압기수분리드럼(3)과 순환펌프(11)를 가지고 배기가스(b)의 상류쪽(b1)에 배치된 고압증기 발생기구(2c)에 의해서 고압증기(a4)로 되고, 또한, 상기 포화열수는 저압기수분리드럼(4)에 의해서 저압증기(a3)가 분리되고, 저압증기(a3)는 발전기(6)구동용의 증기터어빈(5)과 각종의 히이팅 서어비스기기(8)로 공급되며, 또, 고압중기(a4)는 증기터어빈(5)에 각각 열원으로서 공급되어 일을 한다음, 증기터어빈(5)의 드레인(drain)쪽은 복수기(復水器)(7)에 의해서 복수되어 복수펌프(13)에 의해 드레인탱크(9)에 도입되고, 히이팅 서어비스기기(8)및 저압기수분리드럼(4)의 드레인도 드레인탱크(9)로 도입되어, 드레인탱크(9)의 드레인은 급수펌프(12)에 의해서 급수(a)로서 순환되는 구조로 되어있다.Referring to the conventional example of the two-stage waste heat recovery system in the diesel engine, as shown in FIG. 1, the water supply a pressurized by the water supply pump 12 is exhaust gas generated from the diesel engine 1. (b) downstream (b 3) a and with hot water by a hot water generating mechanism (2a), the classification of the hot water (分流) arranged on the (a 1) is exhaust gas (b) via a pressure reducing valve (10) The low pressure water generator (2b) disposed in the middle stream side (b 2 ) of the water becomes saturated hot water containing low pressure steam, and the hot water classification (a 2 ) is a high pressure water separation drum (3). ) And the circulating pump 11 to the high pressure steam a 4 by the high pressure steam generator 2c disposed upstream of the exhaust gas b 1 , and the saturated hot water is a low pressure water. and a low-pressure steam (a 3) separated by the separation drum 4, the low-pressure steam (a 3) is a ball with the steam turbine 5 and the floating hiyi seoeobiseu device (8) for a variety of generator 6 is driven And, again, a high-pressure medium (a 4) is a side drain (drain) of is negative, the steam turbine (5) to be supplied as the respective heat sources in the steam turbine (5) by the condenser (復水器) (7) A plurality of pumps are introduced into the drain tank 9 by the plurality of pumps 13, and the drains of the heating service device 8 and the low pressure water separation drum 4 are also introduced into the drain tank 9, and the drain tank 9 is provided. The drain of is circulated by the feed water pump 12 as feed water a.

그리하여, 종래의 상기 폐열회수장치는, 열수발생기구(2a), 저압기수발생기구(2b)및 고압증기발생기구(2c)로 이루어지고, 저압중기(a3)와 고압중기(a4)를 얻을 수 있는 2단식으로 되어있기 때문에, 단압식(단압식)에 비해서 배기가스중의 열에너지 회수의 점에서는 유리하게 되어있으나, 상기 저압중기(a3)및 고압증기(a4)를 확보하기 위해서 저압기수분리드럼(4)에 남아있는 열에너지를 회수하여, 그 열에너지가 있는 드레인을 상기 급수(a)에 가해서 예열하거나 또는 상기 배기가스(b)로부터 회수한 열량을 급수 가열용으로 사용하는 것이 필요하게 되므로, 폐열회수효율 및 회수열의 이용율의 낮아지는 원인이 된다.Thus, the conventional waste heat recovery apparatus comprises a hot water generating mechanism 2a, a low pressure water generating mechanism 2b, and a high pressure steam generating mechanism 2c, and the low pressure heavy machinery a 3 and the high pressure heavy machinery a 4 are used. Since it is a two-stage type that can be obtained, it is advantageous in terms of heat energy recovery in the exhaust gas as compared with the short-pressure type (single-pressure type), but in order to secure the low-pressure medium (a 3 ) and high-pressure steam (a 4 ) It is necessary to recover the thermal energy remaining in the low pressure water separation drum 4, preheat it by adding a drain with the thermal energy to the water supply a, or use the amount of heat recovered from the exhaust gas b for water supply heating. Therefore, the waste heat recovery efficiency and the utilization rate of the heat of recovery becomes low.

본 발명은, 종래의 폐열회수장치에 있어서의 상기한 바와같은 결점을 해소하기 위해서 개발된 것으로서, 급수를 연소기기의 과급공기(過給空氣)에너지등에 의해 예열하여 예열급수로하는 급수예열기구와, 상기 예열급수를 상기 연소기기의 배기가스의 하류쪽에서 열수로 분류하는 열수발생기구와, 상기 열수의 분류를 상기 배기가스의 증류쪽에서 저압증기를 함유하는 포화열수로하는 저압기수발생기구와, 상기 포화열수의 저압증기를 분리하는 저압기수분리드럼과 상기 열수의 분류를 상기 배기가스의 상류쪽에서 고압증기로하는 고압증기 발생기구와, 상기 저압기수분리드럼에서 저압증기가 분리된 포화열수를 플래쉬시켜서 저압증기로 다시분리, 회수하는 플래셔를 구비하고, 증기터어빈, 히이팅 서어비스등의 열원으로서 공급하는 구성으로한 점에 특징을 가지며, 그 목적으로하는바에 의해 연소기기에 있어서의 과급 공기에너지등의 회수는 급수예열기구를 사용하여 급수의 예열원으로 확보하고, 저압기수분리드럼에 남아있는 열에너지의 회수는 플래셔를 사용하여 제차 저압증기로 분리, 회수하는 일이 가능해져서 폐열회수율 및 그 이용율을 높여서 상기한 바와같은 결점을 해소한 폐열회수장치를 제공하는 점에있다.The present invention was developed in order to solve the above-mentioned drawbacks of the conventional waste heat recovery apparatus, and the water supply preheating mechanism which preheats the feed water by the boost air energy of the combustion apparatus and the like to preheat the feed water. A hot water generating mechanism for classifying the preheated water as hot water downstream of the exhaust gas of the combustion apparatus, a low pressure water generator for dividing the hot water into saturated hot water containing low pressure steam at the distillation side of the exhaust gas, and By flashing a low pressure water separation drum for separating low pressure steam of saturated hot water, a high pressure steam generator for classifying the hot water into high pressure steam upstream of the exhaust gas, and a saturated hot water from which low pressure steam is separated from the low pressure water separation drum. It is equipped with a flasher which separates and collect | recovers with low pressure steam again, and supplies it as a heat source, such as a steam turbine and a heating service. For this purpose, the recovery of the boost air energy, etc. in the combustion equipment is ensured as a preheating source of the feed water using a feedwater preheating mechanism, and the recovery of the thermal energy remaining in the low pressure water separation drum is carried out. The present invention provides a waste heat recovery apparatus that can separate and recover the secondary low-pressure steam to improve the waste heat recovery rate and its utilization rate, thereby eliminating the drawbacks described above.

본 발명은, 상기한 바와같은 구조로되어 있으며, 급수예열기구에 의해서 급수가 연소기기의 과급공기예너지등에 의해서 예열되기때문에, 급수가 충분히 예열되고 그에 따라서 저압기수 발생기구 및 고압증기 발생기구에 의한 열교환성능이 높아저서 저고압증량됨과 동시에, 저압기수 분리드럼에 의해서 저압증기가 분리된 포화열수를 플래셔에 의해서 거듭 저압증기로 얻을 수 있게되어 폐열회수율과 회수율의 이용율의 현저하게 향상된다.The present invention has a structure as described above, and since the feed water is preheated by the boost air preheating of the combustion apparatus by the feed water preheating mechanism, the feed water is sufficiently preheated and accordingly the low pressure water generator and the high pressure steam generator. Due to the high heat exchange performance, the low high pressure is increased, and the saturated hot water from which the low pressure steam is separated by the low pressure water separation drum can be repeatedly obtained by the low pressure steam to improve the utilization rate of the waste heat recovery rate and the recovery rate.

이하, 본 발명의 실시예를 따라서 설명한다.Hereinafter, the embodiment of the present invention will be described.

제2도에 본 발명의 제1실시예를 표시하고 있으며, 도면중,(1)은 연소기기 즉, 디이젤기관으로서, 예열급수(a')를 디이젤기관(1)으로 부터 발생하는 배기가스(b)의 하류쪽(b3)(배기가스저온구역)에서 열수로 하고, 그 열수를(a1'), (a2')로 분류하는 열수발생기구(2a)와, 상기열수의 분류(a1')는 감압밸브(10)에 개재해서 배기가스(b)의 중류쪽(b2)(배기가스중간온도구역)에 배설된 저압기수 발생기구(2b)에 의해서 저압증기를 함유한 포화열수가 되고, 또 상기 포화열수는 저압기수분리드럼(4)에 의해서 저압증기(a3')가 분리되고, 또 상기 열수의 분류(a2')는 고압기수분리드럼(3)과 증기발생관과 과열증기발생관을 가지고 배기가스(b)의 상류쪽(b1)(배기가스 고온구역)에 배치된 고압기구발생기구(2c)에 의해서 고압증기(a4')(과열증기)가 된다. 상기의 열수발생기구(2a), 저압기수발생기구(2b) 및 고압기발생기구(2c)에 의해서 열수증기발생기(2)를 구성함과 동시에 본 실시예에 있어서는, 이에 더하여 디이젤기관(1)에서의 과급기(19)의 토출쪽공기를 냉각하는 동시에 디이젤기관(1)의 외부의 열까지도 냉각해서 열에너지를 흡수하여 급수(a)를 예열해서 예열급수(a')로 하는 급수예열기구(20)를 장치함과 동시에 상기 저압기수분리드럼(4)에서저압증기(a3')가 분리된 포화열수를 수위제어밸브(21)를 개재해서 플래서(22)에 공급하고 이 포화열수를 플래쉬(flash process)시켜서 저압증기(a5)로 다시 분리, 회수하고, 플래셔(22)의 드레인을 부우스터펌프(23)에 의해 드레인탱크(9)에 급수예열용으로서 도입하는 구성으로되어 있다. 즉 상기 저압증기(a3')의 일부와, 상기 저압증기(a4')의 일부 및 상기 저압증기(a5)가 발전기(6)구동용의 증기터어빈(5)에 공급되고, 또 상기 저압증기(a3')의 일부 및 고압기수분리드럼(3)에서 분리된 고압증기의 일부가 관로(24)를 통해서 각각 각종의 히이팅 서어비스기기(8)에 공급되어 각각 열원으로서 일을 하며, 증기터어빈(5)의 드레인쪽은 복수기(7)에 의해서 복수되어 복수펌프(13)에 의해 드레인탱크(9)에 도입되고, 히이팅 서어비스기기(8)의 드레인드레인도탱크(9)에 도입되고, 또한 플래셔(22)의 드레인도 부우스펌프(23)에 의해 드레인탱크(9)에 도입됨에 의해서 예열되는 드레인탱크(9)의 드레인은 급수펌프(12)에 의해서 가압되어 급수(a)로서 순환하고, 또한 상기 급수 예열기구(20)에 의해서 더욱 예열되는 구성으로 되어있다.2 shows a first embodiment of the present invention. In the drawing, reference numeral 1 denotes a combustion device, that is, a diesel engine, in which the preheating water a 'is discharged from the diesel engine 1. b) downstream (b 3) (with hot water in the exhaust gas low temperature zone) and the hot water (a 1 '), (a 2' hot water generating mechanism (2a) and a group of the hot water to classified) of ( a 1 ′ is saturated with low pressure steam by the low pressure water generator 2b disposed in the middle stream side b 2 (exhaust gas intermediate temperature zone) of the exhaust gas b via the pressure reducing valve 10. The low pressure steam (a 3 ') is separated by the low pressure water separation drum (4), and the fractionation of the hot water (a 2 ') is generated by the high pressure water separation drum (3) and steam generation. The high-pressure steam (a 4 ') (superheated steam) is discharged by the high-pressure device generating mechanism (2c) which has a pipe and a superheated steam generating pipe and is disposed upstream (b 1 ) (exhaust gas hot zone) upstream of the exhaust gas (b). do. The hot water steam generator 2 is constituted by the hot water generator 2a, the low pressure water generator 2b, and the high pressure generator 2c. In addition, in the present embodiment, the diesel engine 1 The water supply preheating mechanism 20 which cools the discharge side air of the supercharger 19 at the same time, and also cools the heat outside the diesel engine 1, absorbs the thermal energy, preheats the water supply a, and makes the preheating water supply a '. ) And at the same time, the saturated hot water from which the low pressure steam (a 3 ') is separated from the low pressure water separation drum (4) is supplied to the placer (22) via the water level control valve (21), and the saturated hot water is flashed. A flash process separates and recovers again with the low pressure steam a 5 , and the drain of the flasher 22 is introduced into the drain tank 9 by the booster pump 23 for preheating the water supply. That is, a part of the low pressure steam a 3 ′, a part of the low pressure steam a 4 ′, and the low pressure steam a 5 are supplied to the steam turbine 5 for driving the generator 6. A part of the low pressure steam (a3 ') and a part of the high pressure steam separated from the high pressure water separation drum (3) are supplied to various heating service equipment (8) through the conduit (24) to work as a heat source, respectively. The drain side of the steam turbine 5 is plurally introduced by the condenser 7 and introduced into the drain tank 9 by the plural pumps 13 and introduced into the drain drain tank 9 of the heating service device 8. In addition, the drain of the drain tank 9 which is preheated by the drain of the flasher 22 also introduced into the drain tank 9 by the booster pump 23 is pressurized by the feed water pump 12 to supply water (a). It is configured to circulate as and further preheat by the water supply preheating mechanism 20.

즉, 통상적으로 사용되는 셸앤드튜브(Shall and tube)형의 열교환기인 상기 급수 예열기구(20)는, 셸(몸체부분)쪽은 과급기(19)의 압축공기가 고온으로 흐르고, 튜브쪽을 흐르는 급수(a)에 의해서 냉각되므로, 급수(a)는 압축공기의 열을 회수하여 예열급수(a')가 된다. 도시한 실시예는 상기한 바와같은 구성으로 되어 있으므로 디이젤기관(1) 즉, 연소기기에서 발생한 배기가스(b)중의 열에너지는, 열수증기발생기(2)내의 상류쪽(b1) 즉 배기가스 고온구역에서 열수의 분류(a2')를 고압증기(a4')(과열증기)로 하는 고압기발생기구(2C)에 의한 열회수와, 중류쪽(B2) 즉 배기가스 중간 온도구역에서 열수의 분류(ai)를 저압증기(a3')를 함유하는 포화 열수로하는 저압기수발생기구(2b)에 의한 열회수 및 하류쪽(b3) 즉 배기가스 저온구역에서 예열급수(a')를 열수로하는 열수발생기구(2a)에 의한 열회수에 의해서 효율좋게 회수됨과 동시에, 급수예열기구(20)에 의해서 디이젤기관(1)에 있어서의 과급공기에너지와 디이젤기관(1)의 외부의 열에너지등이 급수예열원으로서 회수되고, 또한 플래셔(22)의 드레인도 예열용으로서 공급되기때문에 급수(a)가 충분하게 예열됨과 동시에 열수증기발생기(2)에 의한 열교환성이 높아져서 저, 고압증기가 증량되고, 즉 배기가스(b)고부터의 열에너지 회수율도 향상되므로, 그 결과, 저압기수분리드럼(4)에서의 포화열수의 포화도도 높아져서 플래셔(22)에 의해서 저압증기(as)가 다량으로 분리, 회수할수 있게되어 디이젤기관(1) 즉, 연소기기에서 생기는 폐열의 회수효율이 향상됨과 동시에 증기터어빈(5), 히이팅 서어비스기기(8)로의 저, 고압증기의 공급량의 증가 즉, 회수열의 이용율이 현저하게 향상된다. 즉, 폐열회수성능이 현저하게 향상된다.That is, the water supply preheating mechanism 20, which is a shell and tube type heat exchanger that is commonly used, has a compressed air of the supercharger 19 at the shell (body portion) at a high temperature and flows through the tube side. Since the water is cooled by the water supply a, the water supply a recovers the heat of the compressed air to become a preheating water supply a '. Since the illustrated embodiment is configured as described above, the thermal energy in the diesel engine 1, that is, the exhaust gas b generated by the combustion apparatus, is the upstream side b 1 of the hot water steam generator 2, that is, the exhaust gas high temperature. Heat recovery by the high-pressure generator 2C, with the classification of the hot water in the zone (a 2 ′) as high pressure steam (a 4 ′) (superheated steam), and the hot water in the midstream (B 2 ), ie the middle temperature zone of the exhaust gas The heat recovery by the low pressure water generator (2b) with the classification (ai) as saturated hot water containing low pressure steam (a 3 ′) and hot water preheating water (a ') in the downstream (b3), ie, low temperature exhaust gas The air is recovered efficiently by the heat recovery by the hot water generating mechanism 2a, and the boost air energy in the diesel engine 1 and the heat energy outside the diesel engine 1 are supplied by the water supply preheating mechanism 20. It is recovered as a feed water preheating source, and the drain of the flasher 22 is also supplied for preheating. Therefore, since the water supply a is sufficiently preheated and the heat exchangeability by the hot water steam generator 2 is increased, the low-pressure steam is increased, that is, the recovery rate of heat energy from the exhaust gas b is also improved. The saturation of the saturated hot water in the low pressure water separation drum 4 also increases, so that the low pressure steam a s can be separated and recovered in a large amount by the flasher 22, thereby recovering waste heat generated in the diesel engine 1, that is, the combustion device. At the same time as the efficiency is improved, the supply amount of low and high pressure steam to the steam turbine 5 and the heating service device 8 is increased, that is, the utilization rate of the recovery heat is remarkably improved. That is, waste heat recovery performance is remarkably improved.

또, 제3도는 본 발명의 제2실시예를 표시하고 있으며, 제2도에 표시한 제1실시예와 비교하면, 저압기수발생기구(2b)에 있어서 열수의 분류(a1')의 공급쪽에 저압기수분리드럼(4')을 배치하고, 열수의 분류(a1')로부터 직접적으로 저압증기를 분리함과 동시에, 더우기 배기가수(b)의 중간온도구역(중류쪽)에서 열교환한다음에도 저압증기가 분리되게 하여, 열교환효율이 향상과 동시에 저압증기의 발생효율도 높힌점에 특징을 가지며, 그외의 구성은 제1실시예와 거의 마찬가지로 되어 있으므로, 마찬가지 작용효과를 얻을 수 있다. 또한, 동 도면중(30)(31)은 열수순환용펌프이다.FIG. 3 shows the second embodiment of the present invention, and compared with the first embodiment shown in FIG. 2, supply of hot water fractionation a 1 ′ in the low pressure water generator 2b. The low pressure water separation drum 4 'is disposed on the side, and the low pressure steam is separated directly from the hot water fractionation (a 1 '), and furthermore, the heat exchanger is heated in the middle temperature section (midstream side) of the exhaust gas b. It is characterized by the fact that the low pressure steam is separated, the heat exchange efficiency is improved and the generation efficiency of the low pressure steam is also improved. The other structure is almost the same as in the first embodiment, and thus the same effect can be obtained. In addition, 30 and 31 of the same figure are a hot water circulation pump.

그런데, 상기 실시예에서는 디이젤기관에 있어서의 폐열회수장치에 대해서 설명하였지만 본 발명은 그에 한하지 않고 각종의 연소기기용으로도 적용할수 있다.Incidentally, in the above embodiment, the waste heat recovery apparatus in the diesel engine has been described, but the present invention is not limited thereto, but may be applied to various combustion apparatuses.

이상과 같이 본 발명을 실시예에 대해서 설명하였지만 본 발명은 이와같은 실시예에만 국한되는 것은 아니고 본 발명의 정신을 이탈하지 않는 범위내에서 여러가지의 설계변경을 할수 있는 것이다.Although the present invention has been described with reference to the embodiments as described above, the present invention is not limited to such embodiments, and various design changes can be made without departing from the spirit of the present invention.

Claims (1)

급수를 연소기기의 과급공기에너지등에 의해 예열하여 예열급수로 하는 급수예열기구와, 상기 예열급수를 상기 연소기기의 배기가스의 하류쪽에서 열수로 분류하는 열수발생기구와, 상기 열수의 분류를 상기 배기가스의 중류쪽에서 저압증기를 함유하는 포화열수로하는 저압기수 발생기구와, 상기 포화열수의 저압중기를 분리하는 저압기수분리드럼과 상기 열수의 분류를 상기 배기가스의 상류쪽에서 고압증기로하는 고압증기 발생기구와, 상기 저압기수분리드럼에서 저압증기가 분리된 포화열수를 플래쉬시켜서 저압중기로 다시 분리, 회수하는 플래셔를 구비하고, 증기터어빈, 히이팅 서어비스등의 열원으로서 공급하는 구성으로한것을 특징으로 하는 폐열회수장치.A water supply preheating mechanism for preheating the water supply by the boost air energy of the combustion device, and the like to preheat the feed water, a hot water generating mechanism for classifying the preheating water into hot water downstream of the exhaust gas of the combustion device, and classifying the hot water into the exhaust water. A low pressure water generator comprising saturated hot water containing low pressure steam at the middle of the gas, a low pressure water separation drum separating the low pressure heavy steam of the saturated hot water, and a high pressure steam for separating the hot water into high pressure steam upstream of the exhaust gas. And a flasher which flashes saturated hot water separated from the low pressure steam from the low pressure water separation drum and separates and recovers the waste water back to the low pressure medium, and supplies it as a heat source such as a steam turbine or a heating service. Waste heat recovery device.
KR1019840007800A 1984-12-10 1984-12-10 Apparatus of recovering of the waste energy KR880000050B1 (en)

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CN107013273A (en) * 2017-05-12 2017-08-04 李金山 Utilize the method and device of coke-oven plant's raw coke oven gas cogeneration

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KR100425274B1 (en) * 2001-05-17 2004-03-30 삼성비피화학(주) Waste heat collection system using dual recompression systems and its method
KR100424899B1 (en) * 2001-07-07 2004-03-27 이준형 Closed circuit hot water boiler system with steam generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107013273A (en) * 2017-05-12 2017-08-04 李金山 Utilize the method and device of coke-oven plant's raw coke oven gas cogeneration

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