KR101842713B1 - Waste heat recovery apparatus of steam boiler - Google Patents

Waste heat recovery apparatus of steam boiler Download PDF

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Publication number
KR101842713B1
KR101842713B1 KR1020170152898A KR20170152898A KR101842713B1 KR 101842713 B1 KR101842713 B1 KR 101842713B1 KR 1020170152898 A KR1020170152898 A KR 1020170152898A KR 20170152898 A KR20170152898 A KR 20170152898A KR 101842713 B1 KR101842713 B1 KR 101842713B1
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South Korea
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pipe
hot water
water supply
heat exchanger
steam
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KR1020170152898A
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Korean (ko)
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박정연
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주식회사 동광보일러
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Priority to KR1020170152898A priority Critical patent/KR101842713B1/en
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Publication of KR101842713B1 publication Critical patent/KR101842713B1/en
Priority to CN201811095418.XA priority patent/CN109798511B/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
    • F22B33/18—Combinations of steam boilers with other apparatus
    • 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
    • F22D1/02—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G1/00—Steam superheating characterised by heating method
    • F22G1/02—Steam superheating characterised by heating method with heat supply by hot flue gases from the furnace of the steam boiler
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Abstract

The present invention relates to a waste heat collection device of a steam boiler. First to third heat exchangers are installed an air flue of the steam boiler to respectively have only a single function of a economizer, a hot water heater, or a superheater, or two or more heat exchangers have the same function. Thus, desires of demanders can be satisfied. The present invention comprises: a heat exchanger group (20) which has first, second, and third heat exchangers (30, 40, 50) installed in an air flue (12), connects a water supply pipe (31) to an inlet of the first heat exchanger (30), connects an outlet to a boiler body (11) by a water discharge pipe (33), connects an inlet and an outlet of the second heat exchanger (40) to a hot water storage tank (41) by a hot water supply pipe (42) and a hot water discharge pipe (44), and connects an inlet of the third heat exchanger (50) to a saturated steam branch pipe (51) connected to a main saturated steam supply pipe (13) and an outer to a superheated steam conduit (52); an inlet side connection pipe (60A) which connects the water supply pipe (31), the hot water supply pipe (42), and the saturated steam branch pipe (51) with each other; an outlet side connection pipe (60B) which connects the water discharge pipe (33), the hot water discharge pipe (44), and the superheated steam conduit (52) with each other; and first to tenth control valves (70A-70J) respectively installed in the water supply pipe (31), the hot water supply pipe (42), the saturated steam branch pipe (51), the inlet side connection pipe (60A), the water discharge pipe (33), the hot water discharge pipe (44), the superheated steam conduit (52), and the outlet side connection pipe (60B).

Description

증기보일러의 폐열 회수장치{WASTE HEAT RECOVERY APPARATUS OF STEAM BOILER}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a waste heat recovery apparatus for a steam boiler,

본 발명은 증기보일러의 폐열 회수장치에 관한 것이며, 상세하게는 연도에 설치한 제1 내지 제3열교환기를 각각 절탄기, 온수가열기, 과열기의 기능을 하게 하거나 각 열교환기의 기능을 다양화한 증기보일러의 폐열 회수장치에 관한 것이다.The present invention relates to a waste heat recovery apparatus for a steam boiler, and more particularly to a waste heat recovery apparatus for a steam boiler in which first to third heat exchangers installed in a flue are divided into a heat exchanger, a hot water heater and a superheater, To a waste heat recovery apparatus for a steam boiler.

주지하는 바와 같이, 증기보일러의 연소실에서 연료를 연소시켜 그 화염 등에 의하여 전열면을 가열하여서 증기를 생성하고 연도로 배출되는 배기가스의 온도는 200 ℃ 이상이 되므로, 상기 폐열을 회수하기 위하여 연도에 통상적으로 과열기와 절탄기를 차례로 설치하여서, 과열기는 포화증기를 과열증기화 하고, 절탄기는 급수를 예열함으로써 효율을 증대하고 있다.As is well known, since the combustion chamber of the steam boiler burns fuel, the heat is heated by the flame or the like to generate steam, and the temperature of the exhaust gas discharged to the burner becomes 200 ° C or higher. Therefore, Generally, a superheater and a carburetor are installed in order to superheater the superheated steam to superheat steam, and the carburetor is to increase the efficiency by preheating the feedwater.

그러나 상기한 연도에 과열기와 절탄기를 차례로 설치한 폐열 회수장치는, 과열기와 절탄기는 각각 특정한 단일 기능만을 수행함으로써 효용성에서 그 효율이 저하되고 있다.However, in the waste heat recovery device in which the superheater and the carbon burner are sequentially installed in the above-mentioned year, the superheater and the carbon burner each have a specific single function, thereby decreasing efficiency in efficiency.

한편, 연도에 1 개의 열교환기만을 설치하여 과열기겸 온수가열기로 겸용하도록 한 증기보일러 부설 과열기겸 온수가열기가 특허문헌 1에 개시되어 있다.On the other hand, Patent Document 1 discloses a superheater and a hot water heater installed in a steam boiler, in which only one heat exchanger is installed in a year, and both superheaters and hot water are used as heaters.

상기 특허문헌 1의 증기보일러 부설 과열기겸 온수가열기는 증기보일러 본체의 상부에 형성한 증기실에 주공급관을 연결하고, 연도에 과열기겸 온수 열교환기를 설치하여 상기 과열기겸 온수 열교환기의 하부 일측과 상기 주공급관의 입구에 포화증기 공급관을 연결함과 아울러 상기 포화증기 공급관의 입구와 상기 주공급관의 포화증기 공급관의 연결부 후방에 밸브 A·B를 각각 설치하고, 상기 과열기겸 온수 열교환기의 상부와 상기 주공급관의 출구측에 과열증기 도관을 연결하여 상기 과열증기 도관에 제어밸브 A를 설치함과 아울러 상기 과열증기 도관의 제어밸브 A입구측에 온수도관을 연결하여 제어밸브 B를 설치하며, 상기 과열기겸 온수 열교환기의 하부 타측에 펌프부설 급수관을 연결하여서, 상기 과열기겸 온수 열교환기에 포화증기 또는 급수를 공급하여 과열화하거나 온수를 선택적으로 생성토록 한 것이다.A main supply pipe is connected to a steam chamber formed in an upper portion of a steam boiler main body of a superheater and a hot water heater installed in a steam boiler of Patent Document 1 and a superheater and a hot water heat exchanger are installed in the flue and the lower one side of the superheater and hot water heat exchanger A saturated steam supply pipe is connected to the inlet of the main supply pipe and valves A and B are installed at the inlet of the saturated steam supply pipe and behind the connection of the saturated steam supply pipe of the main supply pipe respectively and the upper part of the superheater and the hot water heat exchanger A control valve A is installed in the superheated steam conduit by connecting a superheated steam pipe to the outlet of the main supply pipe and a control valve B is installed by connecting a hot water pipe to the inlet of the control valve A of the superheated steam pipe, A pump installed water pipe is connected to the other side of the lower part of the superheater and the hot water heat exchanger, and saturated steam or hot water is supplied to the superheater and the hot water heat exchanger To the feed water to a superheated ever screen or selectively generate the hot water.

[특허문헌1] KR 10-1006761 B1[Patent Document 1] KR 10-1006761 B1

그러나 상기 특허문헌1의 증기보일러 부설 과열기겸 온수 가열기는 폐열에 의하여 포화증기를 과열화하거나 온수를 생성한 장점은 있으나, 연도에 설치한 열교환기는 과열기 또는 온수가열기의 기능만을 하고, 또한 과열증기의 양과 온수생성량이 고정되어 있으므로 부하증가시 과열증기 또는 온수의 수요량을 충족하지 못하여 수요자의 욕구를 충족하지 못하고, 특히 폐열에 의한 절탄기의 기능의 추가가 절실한 실정이다.However, in the superheater and hot water heater installed in the steam boiler of Patent Document 1, there is an advantage that the saturated steam is superheated by the waste heat or hot water is generated. However, the heat exchanger installed in the steam heater functions only as a superheater or hot water heater, The amount of hot water and the amount of hot water are fixed. Therefore, the demand of superheated steam or hot water can not be satisfied when the load is increased. Therefore, the demand of the consumer can not be satisfied.

본 발명은 상기한 실정을 감안하여 증기보일러의 연도에 제1 내지 제3열교환기를 설치하여 각각 절탄기, 온수가열기 및 과열기의 단독 기능만을 하게 하거나, 2 개 이상의 열교환기를 동일 기능을 하도록 하여 수요자의 욕구를 충족할 수 있도록 한 증기보일러의 폐열 회수장치를 제공하는 것을 목적으로 한다.In view of the above-described circumstances, it is an object of the present invention to provide a steam boiler with first to third heat exchangers installed in the steam boiler so as to perform only a single function of the heat collectors, the hot water heater and the superheater, And to provide a waste heat recovery apparatus for a steam boiler that can meet the needs of a steam boiler.

상기한 목적을 달성하기 위하여, 본 발명은 연도에 제1, 2, 3열교환기를 설치하여서, 상기 제1열교환기의 입구에 급수공급관을 연결하고 출구를 보일러 통체에 급수배출관으로 연결하며, 상기 제2열교환기의 입·출구를 온수저장탱크에 온수공급관과 온수배출관으로 연결하며, 상기 제3열교환기의 입구를 포화증기 주공급관에 연결되는 포화증기 지관에 연결함과 아울러 출구에 과열증기 도관을 연결한 열교환기군과;In order to accomplish the above object, the present invention provides a heat exchanger having first, second and third heat exchangers installed in a flue, connecting a water supply pipe to an inlet of the first heat exchanger, connecting an outlet to a boiler cylinder with a water discharge pipe, 2 The inlet and the outlet of the heat exchanger are connected to the hot water storage tank by the hot water supply pipe and the hot water discharge pipe and the inlet of the third heat exchanger is connected to the saturated steam pipe connected to the saturated steam main supply pipe, A connected heat exchanger group;

상기 급수공급관, 온수공급관 및 포화증기 지관을 상호 연결한 유입측 연결관과;An inlet connection pipe connecting the water supply pipe, the hot water supply pipe and the saturated steam pipe;

상기 급수배출관, 온수배출관 및 과열증기 도관을 상호 연결한 배출측 연결관; 및A discharge side connection pipe interconnecting the water discharge pipe, the hot water discharge pipe, and the superheated steam pipe; And

상기 급수공급관, 온수공급관, 포화증기 지관, 유입측 연결관, 급수배출관, 온수배출관, 과열증기 도관 및 배출측 연결관에 각각 설치한 제1 내지 제10제어밸브; 를 포함하여 구성한 것이다.First to tenth control valves provided respectively in the water supply pipe, the hot water supply pipe, the saturated steam pipe, the inflow side connection pipe, the water discharge pipe, the hot water discharge pipe, the superheated steam pipe and the discharge side connection pipe; .

이상과 같이 본 발명은, 연도에 제1 내지 제3열교환기를 설치하여서, 절탄기, 온수가열기 및 과열기의 기능을 각각 수행하도록 하여 폐열흡수기능을 다양화함으로써 폐열의 활용도를 높이고, 2 개 이상의 열교환기를 동일 기능을 수행하도록 하여 급수량, 온수량 또는 과열증기의 양을 선택적으로 대폭 증가시킬 수 있으므로 사용부하의 급격한 변동시에 능동적으로 대처할 수 있게 되어 이용효율을 증대하고 수요자의 욕구를 충족할 수 있는 것이다.As described above, according to the present invention, the first to third heat exchangers are installed in the tundish to perform the functions of the absorbent, the hot water heater and the superheater, respectively, thereby diversifying the waste heat absorbing function, Since the heat exchanger performs the same function, the quantity of water supply, the quantity of hot water or the amount of superheated steam can be selectively drastically increased, so that it is possible to actively cope with a sudden change in the usage load, It is.

도 1은 본 발명의 실시예의 구성도.
도 2는 본 발명의 실시예의 요부 확대도.1 is a configuration diagram of an embodiment of the present invention.
Fig. 2 is an enlarged view of essential parts of an embodiment of the present invention. Fig.

도 1은 본 발명의 실시예의 구성도이고, 도 2는 본 발명의 실시예의 요부 확대도로서, 부호 10은 증기보일러로서, 상기 증기보일러(10)는 도면에서 노통연관 보일러를 도시하였으므로 이 노통연관 보일러에 의하여 설명한다.FIG. 1 is a structural view of an embodiment of the present invention. FIG. 2 is an enlarged view of the main part of the embodiment of the present invention, in which reference numeral 10 denotes a steam boiler and the steam boiler 10 has a boiler- Explained by the boiler.

상기 증기보일러(10)는 보일러 통체(11)의 내부 하방 일측에 노통을 설치하고, 상기 노통의 측면 및 상부에 연관을 배설하여 노통에서 연소된 화염이 반전하여 연관을 경유한후 연도(12)로 배출되도록 하고, 상기 보일러 통체(11)의 하부에는 수실이 상부에는 증기실이 형성되며, 상기 증기실에는 포화증기 주공급관(13)을 연결하여서, 보일러 통체(11)에서 생성된 포화증기를 포화증기 사용처에 공급하는 것이다.The steam boiler 10 is provided with a hearth on the lower side of the inner side of the boiler cylinder 11 and a connection is provided on the side and the upper side of the hearth to control the flame 12 after the burned flame is inverted, A steam chamber is formed in a lower portion of the boiler cylinder 11 and a saturated steam main supply pipe 13 is connected to the steam chamber so that the saturated steam generated in the boiler cylinder 11 To supply saturated steam.

상기한 증기보일러는 주지된 노통연관 보일러에 대하여 도시하고 설명하였으나, 이것에 한하지 않고 주지된 증기보일러이면 제한되지 않는 것이다.Although the above-described steam boiler is shown and described with respect to a well-known boiler-related boiler, the present invention is not limited thereto, and is not limited as long as it is a well-known steam boiler.

부호 20은 열교환기군으로서, 상기 열교환기군(20)은 상기연도(12)에 제1, 2, 3 열교환기(30), (40), (50)를 설치한 것이다.Reference numeral 20 denotes a heat exchanger group and the heat exchanger group 20 is provided with first, second and third heat exchangers 30, 40 and 50 in the flue 12.

상기 제1열교환기(30)는 그 입구에 급수펌프(32)를 부설한 급수공급관(31)을, 출구에 급수배출관(33)을 연결하여서, 급수공급관(31)은 급수탱크(34)에 연결하고, 급수배출관(33)은 보일러 통체(11)에 연결하며, 상기 급수배출관(33)에는 체크밸브(35)를 설치하여서, 상기 제1열교환기(30)를 절탄기의 기능만으로 사용할 때에는 급수펌프(32)에 의하여 급수공급관(31)으로 공급되는 상수도 등을 제1열교환기(30)에서 폐열에 의하여 예열한 후, 보일러 통체(11)에 예열된 급수를 공급함으로써 효율을 증대한 것이다.The first heat exchanger 30 is connected to a water supply pipe 31 having a water supply pump 32 at its inlet and a water discharge pipe 33 at an outlet thereof so that the water supply pipe 31 is connected to the water supply tank 34 The water supply pipe 33 is connected to the boiler cylinder 11 and the water discharge pipe 33 is provided with a check valve 35. When the first heat exchanger 30 is used only as a power saving unit The efficiency of the water supply is increased by preheating the water supply supplied to the water supply pipe 31 by the water supply pump 32 by the waste heat in the first heat exchanger 30 and then supplying the preheated water to the boiler cylinder 11 .

상기 제2열교환기(40)는 그 입구를 온수저장탱크(41)의 하부와 순환펌프(43)를 부설한 온수공급관(가열하려는 온수공급관)(42)으로 연결하고, 출구는 상기 온수저장탱크(41)의 상부와 온수배출관(가열된 온수배출관)(44)으로 연결하여서, 상기 제2열교환기(40)를 온수가열기의 기능만으로 사용할 때에는 온수저장탱크(41)에 저장된 저온의 가열하려는 온수를 제2열교환기(40)에서 폐열에 의하여 가열하여 고온의 온수를 생성한 후 온수저장탱크(41)에 저장하여서 온수사용처에 공급하는 것이다.The second heat exchanger 40 connects the inlet thereof to the lower part of the hot water storage tank 41 and the hot water supply pipe 42 to which the circulation pump 43 is installed and the outlet is connected to the hot water storage tank 41. [ When the second heat exchanger 40 is used only for the function of hot water heating, it is preferable to connect the upper part of the hot water storage tank 41 to the hot water discharge pipe (heated hot water discharge pipe) The hot water is heated by the waste heat in the second heat exchanger (40) to generate hot water of high temperature and then stored in the hot water storage tank (41) to supply hot water to the user.

상기 제3열교환기(50)는 그 입구를 포화증기 주공급관(13)에 연결되는 포화증기 지관(51)에 연결하고, 출구에는 과열증기 도관(52)을 연결하여서, 상기 제3열교환기(50)를 과열기의 기능만으로 사용할 때에는 보일러 통체(11)에서 생성된 포화증기를 포화증기 지관(51)을 통하여 제3열교환기(50)에 공급하여 폐열에 의하여 가열하여 과열증기화 한후 과열증기 사용처에 공급하는 것이다.The third heat exchanger 50 has an inlet connected to the saturated steam branch pipe 51 connected to the saturated steam main pipe 13 and an outlet connected to the superheated steam pipe 52, 50 is used only for the function of the superheater, the saturated steam generated in the boiler cylinder 11 is supplied to the third heat exchanger 50 through the saturated steam branch pipe 51, heated by the waste heat to superheated steam, .

상기 제1 내지 제3열교환기(30),(40),(50)는 입구헤더(22)와 출구헤더(23) 사이에 다수 열의 열교환관(21)을 배설하여 전연면적을 획기적으로 확대한 것이다.The first to third heat exchangers 30, 40 and 50 are provided with a plurality of rows of heat exchange tubes 21 between the inlet header 22 and the outlet header 23 to dramatically increase the total surface area will be.

부호 60A는 유입측 연결관이고, 60B는 배출측 연결관으로서, 상기 유입측 연결관(60A)은 상기 급수공급관(31), 온수공급관(42) 및 포화증기 지관(51)을 상호 연결한 것으로 상기 제1 내지 제3열교환기(30), (40), (50)의 입구 근처에 연결하 한 것이고, 상기 배출측 연결관(60B)은 상기 급수배출관(33), 온수배출관(44) 및 과열증기 도관(52)을 상호 연결한 것으로서, 상기 제1 내지 제3열교환기(30), (40), (50)의 출구 근처에 연결한 것으로서, 상기 제1 내지 제3열교환기(30), (40), (50)를 절탄기, 온수가열기 및 과열기로 사용하거나 상기 기능을 선택적으로 발휘할 때 그 기능을 수행하는 것이다.Reference numeral 60A denotes an inlet side connection pipe, 60B denotes a discharge side connection pipe, and the inlet side connection pipe 60A is formed by interconnecting the water supply pipe 31, the hot water supply pipe 42 and the saturated steam pipe 51 And the discharge side connection pipe 60B is connected to the water supply pipe 33, the hot water discharge pipe 44, and the water discharge pipe 44. The water discharge pipe 33 is connected to the vicinity of the inlet of the first to third heat exchangers 30, 40, The first to third heat exchangers 30 and 40 are connected to each other in the vicinity of the outlet of the first to third heat exchangers 30 and 40, , (40), and (50) are used as the absorbent, the hot water heater and the superheater, or perform the functions when the functions are selectively exercised.

또한, 상기 급수공급관(31), 온수공급관(42), 포화증기 지관(51), 유입측 연결관(60A)의 급수공급관(31)과 온수공급관(42)의 사이 및 온수공급관(42)과 포화증기 지관(51)의 사이, 급수배출관(33), 온수배출관(44), 과열증기 도관(52), 배출측 연결관(60B)의 급수배출관(33)과 온수배출관(44)의 사이, 온수배출관(44)과 과열증기 도관(52)의 사이에 제1 내지 제10제어밸브(70A), (70B), (70C), (70D), (70E), (70F), (70G), (70H), (70I), (70J)를 설치한 것이다.The water supply pipe 31, the hot water supply pipe 42, the saturated steam branch pipe 51, the water supply pipe 31 of the inlet side connection pipe 60A and the hot water supply pipe 42 and the hot water supply pipe 42, Between the saturated steam branch pipe 51 and the water discharge pipe 33 of the water discharge pipe 33, the hot water discharge pipe 44, the superheated steam pipe 52 and the discharge side connection pipe 60B and the hot water discharge pipe 44, The first to tenth control valves 70A, 70B, 70C, 70D, 70E, 70F, 70G and 70B are provided between the hot water discharge pipe 44 and the superheated steam pipe 52, (70H), (70I), and (70J).

상기 제1 내지 제10제어밸브(70A~70J)는 수동조작하거나, 제어수단에 의하여 자동제어할 수 있는 것이다.The first to tenth control valves 70A to 70J can be manually operated or automatically controlled by the control means.

그리고 본 발명은 상기 제1 내지 제10제어밸브(70A~70J)를 제어하여 제1 내지 제3열교환기(30), (40), (50)중 2 개를 과열기, 온수가열기, 절탄기의 기능을 하도록 하고 나머지 1 개의 열교환기는 절탄기, 과열기로 사용하도록 하며, 또한, 제1 내지 제3열교환기(30), (40), (50) 전부를 과열기, 온수가열기 및 절탄기로 사용할 수도 있는 것이다.In the present invention, two of the first to third heat exchangers (30, 40, 50) are controlled by controlling the first to tenth control valves (70A to 70J) to a superheater, And the remaining one of the heat exchangers is used as a separator and a superheater, and all of the first to third heat exchangers 30, 40, and 50 are used as a superheater, It is possible.

미설명부호 14는 버너, 15는 밸브이다.Reference numeral 14 denotes a burner, and 15 denotes a valve.

이상과 같은 본 발명은 제1열교환기 내지 제3열교환기(30), (40), (50)를 각각 절탄기, 온수가열기 및 과열기로 사용할 경우에는 제1 내지 제6 제어밸브(70A~70F)는 개방하고, 제7 내지 제10제어밸브(70G~70J)는 폐쇄하며, 포화증기 주공급관(13)에 설치한 밸브(15)를 개방하거나 폐쇄한 후 급수탱크(34)에 저장된 급수를 급수펌프(32)를 구동하여 제1열교환기(30)에 공급하고, 온수저장탱크(41)에 저장된 가열하려는 온수를 순환펌프(43)를 구동하여 제2열교환기(40)에 공급하며, 보일러 통체(11)에서 생성된 포화증기를 포화증기 지관(51)을 통하여 제3열교환기(50)에 공급하는 것이다.In the present invention as described above, when the first to third heat exchangers 30, 40, 50 are used as a cutlery, a hot water heater and a superheater, the first to sixth control valves 70A, 70F are opened and the seventh to tenth control valves 70G to 70J are closed and the valves 15 provided in the saturated steam main supply pipe 13 are opened or closed and then the water stored in the water supply tank 34 To the first heat exchanger 30 and supplies the hot water to be heated stored in the hot water storage tank 41 to the second heat exchanger 40 by driving the circulation pump 43 , And the saturated steam generated in the boiler cylinder (11) is supplied to the third heat exchanger (50) through the saturated steam branch pipe (51).

상기와 같이 제1 내지 제3열교환기(30), (40), (50)에 급수, 가열하려는 온수 및 포화증기를 각각 공급하여 연도(12)로 배출되는 폐열에 의하여 가열하여서, 예열된 급수는 급수배출관(33)을 통하여 보일러 통체(11)에 관수로서 공급하고, 가열된 온수는 온수배출관(44)을 통하여 온수저장탱크(44)에 저장하여 필요한 온수공급처에 공급하며, 과열증기는 과열증기 도관(52)을 통하여 과열증기 사용처에 공급하는 것이다.As described above, the hot water and the saturated steam to be supplied to the first to third heat exchangers 30, 40, and 50 are supplied to each of the first to third heat exchangers 30, 40, and 50 and heated by the waste heat discharged to the flue 12, The hot water is supplied to the boiler cylinder 11 through the water discharge pipe 33 and the heated hot water is stored in the hot water storage tank 44 through the hot water discharge pipe 44 and supplied to the hot water supply source, And supplies the superheated steam to the use place through the steam conduit (52).

이상과 같이 제1 내지 제3열교환기(30), (40), (50)에서 절탄기, 온수가열기 및 과열기의 기능을 각각 수행하여 폐열흡수기능을 다양화 함으로써 폐열의 활용도를 높일 수 있는 것이다.As described above, in the first to third heat exchangers 30, 40, and 50, the functions of the heat collectors, hot water heaters, and superheaters are performed to diversify the waste heat absorbing function, will be.

그리고 제1 내지 제3열교환기(30), (40), (50)를 과열기로 사용할 경우에는 제3제어밸브(70C), 제6, 7, 8제어밸브(70F), (70G), (70H) 및 제9, 10제어밸브(70I), (70J)를 개방하고 제1, 2, 4, 5제어밸브(70A), (70B), (70D), (70E)를 폐쇄하면 보일러 통체(11)에서 생성된 포화증기는 포화증기 지관(51) 및 유입측 연결관(60A)을 통하여 제1 내지 제3열교환기(30), (40), (50)에 공급되어 폐열에 의하여 가열되어서 과열증기가 된 후, 제1 및 제2열교환기(30), (40)에서 과열증기화된 과열증기는 배출측 연결관(60B)을 통하고, 제3열교환기(50)에서 생성된 과열증기는 과열증기 도관(52)을 통하여 과열증기 공급처에 공급하는 것이다.When the first to third heat exchangers 30, 40 and 50 are used as superheaters, the third control valve 70C, the sixth, seventh and eighth control valves 70F, 70G, 70H and seventh and tenth control valves 70I and 70J are opened and the first, second, fourth and fifth control valves 70A, 70B, 70D and 70E are closed, 11 are supplied to the first to third heat exchangers 30, 40, 50 through the saturated steam branch pipe 51 and the inlet side connecting pipe 60A to be heated by the waste heat The superheated steam superheated in the first and second heat exchangers 30 and 40 flows through the discharge side connection pipe 60B and the superheated steam generated in the third heat exchanger 50 The steam is supplied to the superheated steam supply source through the superheated steam pipe (52).

그뿐만 아니라, 제2 및 제3열교환기(40), (50)를 과열기로 사용하고 제1열교환기(30)는 절탄기로 사용하거나, 제3열교환기(50)는 과열기로 사용하고 제1 및 제2열교환기(30), (40)를 온수가열기로 사용할 수 있는 것이다.In addition, the second and third heat exchangers 40 and 50 may be used as a superheater, the first heat exchanger 30 may be used as a carbon burner, the third heat exchanger 50 may be used as a superheater, And the second heat exchangers (30, 40) can be used for heating hot water.

또한, 제1 내지 제3열교환기(30), (40), (50)는 온수가열기로 사용하고, 제2 및 제3열교환기(40), (50)는 온수가열기로 제1열교환기(30)는 절탄기로 사용할 수 있는 것이다.The first and third heat exchangers 30, 40 and 50 are used for heating hot water while the second and third heat exchangers 40 and 50 are used for heating the hot water. The machine 30 can be used as a sucker.

그리고 제1 내지 제3열교환기(30), (40), (50)는 절탄기로 사용하고, 제1 및 제2열교환기(30), (40)는 절탄기로, 제3열교환기(50)는 과열기로 사용할 수 있는 것이다.The first and third heat exchangers 30, 40 and 50 are used as a carbon burner. The first and second heat exchangers 30 and 40 are used as a carbon burner, the third heat exchanger 50, Can be used as a superheater.

상기와 같이 제1 내지 제3열교환기(30), (40), (50)를 각각 절탄기, 온수가열기 및 과열기로 사용하거나, 2 개 이상의 열교환기를 동일 기능으로 사용할 경우의 제1제어밸브 내지 제10제어밸브(70A~70J)는 표 1과 같이 개폐되는 것이다.As described above, when the first to third heat exchangers 30, 40, and 50 are used as the insulators, the hot water heater and the superheater, respectively, or when the two or more heat exchangers are used as the same function, To 10 < th > control valves 70A to 70J are opened and closed as shown in Table 1.

Figure 112017113901669-pat00001
Figure 112017113901669-pat00001

상기와 같이 2 개 이상의 열교환기를 동일 기능을 수행하도록 하여 급수량, 온수량 또는 과열증기의 양을 선택적으로 대폭 증가시키면 사용부하의 급격한 변동시, 예를 들어 제3열교환기(50)에서 생성되는 과열증기의 양이 부하의 수요량에 충족되지 않을 경우, 제1 및 제2열교환기에서도 과열증기를 생성함으로써 요구되는 부하의 수요량에 충족된 과열증기의 양을 능동적으로 공급할 수 있게 됨으로써 이용효율을 증대할 수 있는 것이다.As described above, if the two or more heat exchangers perform the same function and the amount of water supply, hot water, or superheated steam is selectively increased greatly, it is possible to prevent the overheat generated in the third heat exchanger 50 In the case where the amount of steam is not satisfied with the demand amount of the load, the first and second heat exchangers also generate superheated steam, thereby actively supplying the amount of superheated steam satisfying the demanded load demand, You can.

12: 연도, 20: 열교환기군, 30, 40, 50: 제1 내지 제3열교환기, 60A: 유입측 연결관, 60B: 배출측 연결관, 70A~70J: 제1 내지 제10제어밸브The first to third heat exchangers 60A to 60D are connected to the inlet side connecting tubes 60A and 60B to the outlet side connecting tubes 70A to 70J through the first to tenth control valves

Claims (4)

연도에 제1, 2, 3열교환기를 설치하여서, 상기 제1열교환기의 입구에 급수공급관을 연결하고 출구를 보일러 통체에 급수배출관으로 연결하며, 상기 제2열교환기의 입·출구를 온수저장탱크에 온수공급관과 온수배출관으로 연결하며, 상기 제3열교환기의 입구를 포화증기 주공급관에 연결되는 포화증기 지관에 연결함과 아울러 출구에 과열증기 도관을 연결한 열교환기군과;
상기 급수공급관, 온수공급관 및 포화증기 지관을 상호 연결한 유입측 연결관과;
상기 급수배출관, 온수배출관 및 과열증기 도관을 상호 연결한 배출측 연결관; 및
상기 급수공급관, 온수공급관, 포화증기 지관, 유입측 연결관, 급수배출관, 온수배출관, 과열증기 도관 및 배출측 연결관에 각각 설치한 제1 내지 제10제어밸브; 를 포함하여 구성한 증기보일러의 폐열 회수장치.The first and second heat exchangers are connected to the inlet of the first heat exchanger and the outlet of the first heat exchanger is connected to the boiler cylinder through the water discharge pipe, and the inlet and the outlet of the second heat exchanger are connected to the hot water storage tank A heat exchanger group connected to the hot water supply pipe and the hot water discharge pipe, the inlet of the third heat exchanger being connected to the saturated steam branch pipe connected to the saturated steam main pipe, and the outlet being connected to the superheated steam pipe;
An inlet connection pipe connecting the water supply pipe, the hot water supply pipe and the saturated steam pipe;
A discharge side connection pipe interconnecting the water discharge pipe, the hot water discharge pipe, and the superheated steam pipe; And
First to tenth control valves provided respectively in the water supply pipe, the hot water supply pipe, the saturated steam pipe, the inflow side connection pipe, the water discharge pipe, the hot water discharge pipe, the superheated steam pipe and the discharge side connection pipe; And a heat recovery device for recovering waste heat from the steam boiler. 제1항에 있어서,
제1내지 제3열교환기는, 입구헤더와 출구헤더 사이에 다수 열의 열교환관을 배설한 증기보일러의 폐열 회수장치.The method according to claim 1,
The first to third heat exchangers include a plurality of rows of heat exchange tubes disposed between an inlet header and an outlet header. 제1항에 있어서,
급수공급관에 급수펌프를 부설한 증기보일러의 폐열 회수장치.The method according to claim 1,
Waste Heat Recovery Equipment of Steam Boiler with Feed Water Pump Installed in Water Supply Line. 제1항에 있어서,
온수공급관에 순환펌프를 부설한 증기보일러의 폐열 회수장치.

The method according to claim 1,
Waste heat recovery system of steam boiler with circulation pump installed in hot water supply pipe.

KR1020170152898A 2017-11-16 2017-11-16 Waste heat recovery apparatus of steam boiler KR101842713B1 (en)

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