KR100242226B1 - Heat exchanger with circulating layer of solid particle for collecting waste heat of exhaust gas - Google Patents

Heat exchanger with circulating layer of solid particle for collecting waste heat of exhaust gas Download PDF

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KR100242226B1
KR100242226B1 KR1019970022692A KR19970022692A KR100242226B1 KR 100242226 B1 KR100242226 B1 KR 100242226B1 KR 1019970022692 A KR1019970022692 A KR 1019970022692A KR 19970022692 A KR19970022692 A KR 19970022692A KR 100242226 B1 KR100242226 B1 KR 100242226B1
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South Korea
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heat exchanger
exhaust gas
vertical
heat
fluidized bed
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KR1019970022692A
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KR19990000051A (en
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박영재
박상일
최경빈
하영진
박기호
고창복
김정근
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최수현
한국에너지기술연구소
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H8/00—Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

본 고안은 산업체의 보일러 등의 요로로 부터 배출되는 오염물질을 다량으로 포함하고 있는 고온의 배기가스로 부터 폐열을 효율적으로 회수할 수 있는 전열관의 오염축적의 가능성을 줄인 고체입자를 이용한 순환유동층 폐열회수용 열교환기이다.The present invention is a circulating fluidized bed waste heat using solid particles which reduces the possibility of pollutant accumulation in heat pipes that can efficiently recover waste heat from high temperature exhaust gases containing large quantities of pollutants emitted from urinary furnaces such as industrial boilers. Recovery heat exchanger.

수직전열관 배열 밑에 다공으로된 분배판을 설치하여 모래나 석회석과 같은 고체입자의 순환유동층을 형성하여 전열면에서의 전열을 촉진하고 고체입자 순환유동층의 청소기능을 이용하여 전열면의 오염물질의 축적 가능성을 줄일 수 있다. 그리고 유동되는 고체입자로서 석회석 등을 사용하는 경우에는 배기가스에 함유된 산성의 부식성가스를 중화시켜 전열면에서의 부식현상을 감소시켜 대기오염을 줄이는 효과를 갖는다.Porous distribution plate is installed under the vertical heat pipe arrangement to form a circulating fluidized bed of solid particles such as sand or limestone to promote heat transfer on the heat transfer surface and to accumulate contaminants on the heat transfer surface by using the cleaning function of the solid particle circulating fluidized bed. It can reduce the likelihood. In addition, when limestone or the like is used as the solid particles flowing, the acidic corrosive gas contained in the exhaust gas is neutralized to reduce corrosion on the heat transfer surface, thereby reducing air pollution.

따라서 일반 열교환기에서의 오염으로 인한 전열효율의 감소를 방지하고 전열면에서의 오염물질의 청소를 위한 별도의 작업이 줄어들게 되는 동시에 전열면의 부식의 방지로 열교환기의 수명이 증대되어 폐열회수의 경계성이 향상되게 한 것이다.Therefore, the reduction of heat transfer efficiency due to contamination in general heat exchanger is prevented, and the separate work for cleaning contaminants on heat transfer surface is reduced, and the life of heat exchanger is increased by preventing corrosion of heat transfer surface, so that waste heat recovery It is to improve the boundary.

Description

배기가스 폐열회수용 고체입자 순환유동층 열교환기Solid Particle Circulating Fluidized Bed Heat Exchanger for Waste Gas Recovery

본 발명은 산업체의 보일러 등의 요로로부터 배출되는 다량의 오염물질을 함유한 고온의 배기가스로 부터 효율적으로 폐열을 회수하기 위한 자체적인 청소기능을 가진 고체입자를 이용한 폐열회수용 순환유동층 열교환기에 관한 것이다. 종래에는 산업체 요로로부터 배출되는 배기가스의 폐열회수용 열교환기에서는 배기가스내에 함유된 오염물질과 부식성의 가스성분이 열교환기의 전열면에 오염물질이 축척되어 전열 효율을 감소시키고 또한 심한 경우에는 배기가스의 유로를 막는 현상이 발생할 수 있다. 그리고 부착된 오염물질로 인하여 전열면의 재질의 부식현상을 일으킬 수 있는 문제점을 해결하지 못하였으며, 또한 열교환기 전열면에서의 오염물질을 제거하기 위하여 시스템을 정지하게 되어 시스템의 생산성에 악영향을 가져 온다.The present invention relates to a circulating fluidized bed heat exchanger for waste heat recovery using solid particles having a self-cleaning function for efficiently recovering waste heat from a high temperature exhaust gas containing a large amount of pollutants discharged from a urine such as an industrial boiler. will be. Conventionally, in the heat exchanger for waste heat recovery of exhaust gas discharged from an industrial urinary tract, contaminants contained in the exhaust gas and corrosive gas components accumulate on the heat transfer surface of the heat exchanger to reduce heat transfer efficiency and, in severe cases, exhaust The phenomenon of blocking a flow path of gas may occur. In addition, due to the contaminants attached, the problem of corrosion of the material of the heat transfer surface could not be solved. Also, the system was stopped to remove the contaminants from the heat exchanger heat transfer surface, which adversely affects the productivity of the system. come.

본 발명은 위에서 설명한 문제점을 해결하기 위하여 열교환기의 수직 배열관 배열의 하부의 배기가스 통로에 다공분배판을 설치하고 분배판과 수직전열관 사이의 공간에 고체입자를 공급시켜 배기가스 공급시에 고체입자 유동층이 형성되게 하므로서 열교환기의 수직상승관을 통하여 고체입자는 배기가스와 함께 유동화되면서 상승하여 열교환기의 상부로 유입된다. 열교환기의 상부에서 배기가스는 고체입자와 분리되어 열교환기의 출구를 통하여 배출되며 고체입자는 자중에 의하여 배기가스와 분리되어 다시 수직하강관을 통하여 열교환기의 하부 유동층부인 공간부로 이송된다. 따라서 고체입자는 열교환기의 수지전열관 배열내에서 유동화되어 자동적으로 순환되게 되므로 전열면의 경계층을 교란하여 열전달을 증대시키는 동시에 고체입자의 유동화에 의한 전열면의 청소기능이 발생되므로 전열면에 오염물질의 축적을 억제하는 역할을 하게 하기 위한 것이다.The present invention is to solve the problems described above by installing a porous distribution plate in the exhaust gas passage of the lower part of the vertical array tube arrangement of the heat exchanger and supplying the solid particles in the space between the distribution plate and the vertical heat transfer tube to supply the solid at the exhaust gas supply As the particle fluidized bed is formed, the solid particles rise and flow into the upper portion of the heat exchanger through the vertical riser of the heat exchanger while being fluidized together with the exhaust gas. In the upper part of the heat exchanger, the exhaust gas is separated from the solid particles and discharged through the outlet of the heat exchanger. The solid particles are separated from the exhaust gas by their own weight and are again transferred to the space, which is the lower fluidized bed part of the heat exchanger, through the vertical downcomer. Therefore, since the solid particles are fluidized in the resin heat pipe array of the heat exchanger and circulated automatically, the heat transfer surface is increased by disturbing the boundary layer of the heat transfer surface, and the cleaning function of the heat transfer surface is generated by fluidization of the solid particles. It is to play a role of suppressing the accumulation of.

제1도는 본 발명의 실시예시도의 종단면도.1 is a longitudinal sectional view of an exemplary embodiment of the present invention.

제2도는 본 발명의 실시예시도의 A-A선 단면도.2 is a cross-sectional view taken along the line A-A of the embodiment of the present invention.

제3도는 본 발명의 실시예시도의 B-B선 단면도.3 is a cross-sectional view taken along the line B-B of the embodiment view of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 열교환기 동체 2 : 배기가스 유입구1: heat exchanger body 2: exhaust gas inlet

3 : 배기가스 배출구 4 : 분배판3: exhaust gas outlet 4: distribution plate

5 : 배기가스 분배실 6 : 열교환기 수직상승관5: exhaust gas distribution chamber 6: heat exchanger vertical riser

7 : 열교환기 수지하강관 8 : 고체입자 분리실7: heat exchanger resin down pipe 8: solid particle separation chamber

9 : 냉각유체 입구 10 : 가열유체 출구9 cooling fluid inlet 10 heating fluid outlet

11 : 고체입자 저장탱크 13 : 고체입자 분리장치11: solid particle storage tank 13: solid particle separator

14,14a : 배열격판14,14a: Array plate

위에서 설명한 바와 같이된 본 발명을 실시예시도에 의하여 상세히 설명하면 다음과 같다.The present invention as described above will be described in detail by way of examples.

열교환기 동체(1)의 하단부에 배기가스 유입구(2)를 형성하고 상단부에 배기가스배출구(3)를 형성한 내부 중앙부에 전열 배기가스 수직상승관(6)을 설치하여 수직상승관(6)의 상부에 위치되도록 열교환기 동체(1)에 냉각유체입구(9)를 형성하고 수직상승관(6)의 하부에 위치되도록 열교환기 동체(1)의 가열유체 출구(10)를 형성한 것에 있어서 수직상승관(6)을 배열격판(14)(14a) 보다 상하로 길게 연장시켜 설치하고 배열격판(13)(14a)의 중앙에는 수직하강관(7)을 설치하되 양단면이 배열격판(14)(14a)의 상,하면과 평면이 유지되게 하고 수직상승관(6)의 하부에 일정간격을 두고 다수의 통공(4a)이 뚫린 분배판(4)을 설치하여 형성된 분배실(5)의 내부에 형성하여 모래나 석회석과 같은 고체입자를 일정량 충진시키고 상부배열격판(14) 상부에는 분리실(8)을 형성하므로서 산업체의 보일러 등의 요로로 부터 배출되는 오염물질을 다량으로 포함하고 있는 고온의 배기가스가 배기가스 유입구(2)를 통하여 유입하게 되면 다수의 통공(4a)이 뚫린 분배판(4)을 통과하여 배기가스의 분배실(5)로 유입된다. 이과정에서 배기기스가 분배판(4)을 통하여 배기가스의 분배실(5)로 유입된다. 이과정에서 배기가스가 분배판(4)의 다수의 통공(4a)을 통과할 때 고체입자는 배기가스 분배실(5)내에서 유동층을 형성한다. 이와 같이 유동화된 고체입자는 수직상승관(6)으로 배기가스와 함께 유입되어 배기가스에 의하여 유동화 되면서 상승한다. 열교환기 상부의 고체입자 분리실(8)에 유입된 배기가스와 고체입자는 비중차에 의하여 분리된다. 이때 분리실(8)의 상부에 고체입자 분리장치(13)를 설치하므로서 더욱 효과적으로 배기가스와 고체입자를 분리시킬 수 있다. 이와 같이 분리된 배기가스는 열교환기 상부의 배기가스 배출구(3)를 통과하여 열교환기 밖으로 배출된다. 그리고 고체입자 분리장치(13)와 비중차이에 의하여 분리된 고체입자는 수직상승관(6)의 출구가 전열관 상부 배열격판(14)보다 높게 연자설치 되어 있으므로 수직상승관(6)으로 유입되지 않고 상부 배열격판(14) 위에 제1도에서와 같이 쌓이게 된다. 어느정도 쌓이게 되면 상,하 배열격판(14)(14a)의 중앙에 상,하 배열격판(14)(14a)과 평면이 유지되게 설치된 수직하강관(7)을 통하여 하강되어 배기가스 분배실(5)로 유입되어 고체입자 유동층을 형성하게 된다. 따라서 고체입자는 열교환기의 수직상승관(6)과 수직하강관(7)의 수직배열 사이를 자동적으로 순환하게 된다. 이때 고온의 배기가스는 수직상승관(6)을 통과하면서 열교환기내에 공급되는 냉각유체에 의하여 냉각 되어진다. 그리고 냉각유체는 열교환기 동체(1)의 상부측면의 냉각유체의입구(9)를 통하여 유입되어 배기가스 수직상승관(6)의 전열면을 통과하면서 가열되고 이와같이 가열된 유체는 수직상승관(6) 수직하강관(7) 배열의 하부로 내려와서 열교환기 동체(1)의 하부측면에 형성된 가열유체 출구(10)를 통하여 배출된다.A vertical rise pipe (6) by installing an exhaust gas inlet (2) at the lower end of the heat exchanger body (1) and a vertical heat riser (6) at the inner center where the exhaust gas outlet (3) is formed at the upper end. In which the cooling fluid inlet (9) is formed in the heat exchanger body (1) so as to be located at the upper portion of the heat exchanger body, and the heating fluid outlet (10) of the heat exchanger body (1) is formed in the lower part of the vertical riser (6). The vertical riser tube 6 is extended and installed longer than the array plate 14 and 14a, and a vertical down tube 7 is installed in the center of the array plate 13 and 14a, and both ends of the array plate 14 are arranged. Of the distribution chamber 5 formed by installing a distribution plate 4 through which a plurality of through holes 4a are formed at regular intervals at a lower portion of the vertical rising pipe 6 and maintaining a flat surface with the upper and lower surfaces of the 14a. Formed inside to fill a certain amount of solid particles, such as sand or limestone, and to form a separation chamber (8) on the upper array plate (14) When a high temperature exhaust gas containing a large amount of pollutants emitted from a urine, such as an industrial boiler, enters through the exhaust gas inlet 2, it passes through a distribution plate 4 through which a plurality of through holes 4 a are opened. It flows into the distribution chamber 5 of exhaust gas. In this process, the exhaust gas flows into the distribution chamber 5 of the exhaust gas through the distribution plate 4. In this process, when the exhaust gas passes through the plurality of through holes 4a of the distribution plate 4, the solid particles form a fluidized bed in the exhaust gas distribution chamber 5. The solid particles fluidized in this way flow into the vertical riser 6 together with the exhaust gas and rise while being fluidized by the exhaust gas. The exhaust gas and the solid particles introduced into the solid particle separation chamber 8 above the heat exchanger are separated by specific gravity. At this time, by installing the solid particle separator 13 in the upper portion of the separation chamber 8 it is possible to more effectively separate the exhaust gas and the solid particles. The exhaust gas separated in this way passes through the exhaust gas outlet 3 of the upper part of the heat exchanger and is discharged out of the heat exchanger. In addition, the solid particles separated by the solid particle separator 13 and the specific gravity difference do not flow into the vertical riser 6 because the outlet of the vertical riser 6 is higher than the heat transfer tube upper array plate 14. The upper array plate 14 is stacked as shown in FIG. When accumulated to some extent, the exhaust gas distribution chamber 5 is lowered through the vertical down pipe 7 installed in the center of the upper and lower array plates 14 and 14a so that the upper and lower array plates 14 and 14a are kept flat. ) To form a solid particle fluidized bed. Therefore, the solid particles are automatically circulated between the vertical riser 6 and the vertical arrangement 7 of the heat exchanger. At this time, the high-temperature exhaust gas is cooled by the cooling fluid supplied into the heat exchanger while passing through the vertical rise pipe (6). The cooling fluid flows in through the inlet 9 of the cooling fluid on the upper side of the heat exchanger body 1 and is heated while passing through the heat transfer surface of the exhaust gas vertical riser 6. 6) It descends to the bottom of the vertical down pipe (7) arrangement and is discharged through the heating fluid outlet (10) formed on the lower side of the heat exchanger body (1).

열교환기의 작동을 시작할 경우에는 먼저 배기가스가 열교환기를 통과하도록 한 다음에 고체입자저장탱크(11)에 들어있는 고체입자를 고체입자 이송장치(12)를 사용하여 열교환기 상부로 이송시켜 열교환기 내에 배열된 수직 하강관(7)으로 공급시켜 분배실(5)내에서 유동층을 형성하면서 각 수직상승관(6)으로 배기가스와 함께 상승하면서 순환유동층을 형성하도록 한다.When starting the heat exchanger, the exhaust gas passes through the heat exchanger first, and then the solid particles contained in the solid particle storage tank 11 are transferred to the upper part of the heat exchanger using the solid particle transfer device 12. It is supplied to the vertical down pipe (7) arranged in the inside to form a fluidized bed in the distribution chamber (5) to form a circulating fluidized bed while rising with the exhaust gas to each vertical riser (6).

고체입자 이송장치(12)의 작동을 배기가스측의 열교환기 압력손실을 측정하여 자동조절되도록 한다. 그리고 열교환기의 작동이 중지한 경우에는 열교환기 내의 고체입자 일부는 자중에 의하여 분배판(4)의 다수의 통공(4a)을 통과하여 고체입자 저장탱크(11)에 저장되게 한 것이다.The operation of the solid particle transfer device 12 is to be automatically adjusted by measuring the pressure loss of the heat exchanger on the exhaust gas side. When the operation of the heat exchanger is stopped, some of the solid particles in the heat exchanger pass through the plurality of through holes 4a of the distribution plate 4 by their own weight and are stored in the solid particle storage tank 11.

본 발명은 열교환기 동체(1)의 하단부에 배기가스 유입구(2)를 형성하고 상단부에 배기가스배출구(3)를 형성한 내부 중앙부에 전열 배기가스 수직상승관(6)을 설치하여 수직상승관(6)의 상부에 위치되도록 열교환기 동체(1)에 냉각유체입구(9)를 형성하고 수직상승관(6)의 하부에 위치되도록 열교환기 동체(1)에 가열유체 출구(10)를 형성하고 수직상승관(6)의 하부에는 일정 간격을 두고 다수의 통공(4a)이 뚫린 분배판(4)을 철치하여 그 내부에 형성시킨 분배실(5)에 모레나 석회석과 같은 고체입자를 일정량 충진시키고 상부 배열격판(14) 상부에는 분리실(8)을 하므로서 산업체의 보일러 등의 요로로 부터 배출되는 오염물질을 다량으로 포함하고 있는 고온의 배기가스가 배기가스 유입구(2)를 통하여 유입하게 되면 다수의 통공(4a)이 뚫린 분배판(4)을 통과하여 배기가스의 분배실(5)로 유입된다. 이과정에서 배기가스가 분배판(4)의 다수의 통공(4a)을 통과할때 고체입자는 배기가스 분배실(5)내에서 고체입자유동층을 형성하는 동시에 열교환기의 분배격판(14a)의 하부로 연장시켜 설치된 수직상승관(6)을 통하여 고체입자는 배기가스와 함게 유동화 되면서 상승하여 열교환기 상부의 분리실(8)로 유입된다. 열교환기의 상부에서 배기가스는 고체입자와 분리되어 열교환기의 출구(3)를 통하여 배출되며 고체입자는 자중에 의하여 배기가스와 분리되어다시 상부 배열격판(14)와 단면이 평면을 유지하고있는 수직하강관(7)을 통하여 열교환기의 하부 유동층부인 분배실(5)로 이송된다. 이때 분리실(8)의 상부에 고체입자 분리장치(13)를 설치하므로서 더욱 효과적으로 배기가스와 고체입자를 분리시킬 수 있다. 따라서 고체입자는 열교환기의 수직상승관(6)과 수직하강관(7)의 배열내에서 유동화되어 자동적으로 순환하게 되므로 전열면의 경계층을 교란하여 열전달을 증대시키는 동시에 고체입자의 유동화에 의한 전열면의 청소기능이 발생되므로 전열면에 오염물질의 축적을 억제하는 역할을 할 수 있다. 여기에 사용되는 고체입자로서는 모래나 석회석 입자를 사용하게 되는데 석회석 등의 입자를 사용할 경우에는 배기가스내의 SOx나 NOx와 같은 성분과 화학 반응을 이르켜 중화 시키므로 배기가스의 정화작용을 한다. 또한 이러한 배기가스의 부식성분을 감소시므로서 열교환기의 전열면의 재질의 부식현상을 억제할 수 있다.According to the present invention, vertical exhaust pipes are formed by installing an exhaust gas inlet (2) at the lower end of the heat exchanger body (1) and installing a vertical exhaust pipe (6) at the inner central part having an exhaust gas outlet (3) at the upper end. A cooling fluid inlet 9 is formed in the heat exchanger body 1 so as to be located at the top of (6), and a heating fluid outlet 10 is formed in the heat exchanger body 1 so as to be located at the bottom of the vertical riser 6. And a certain amount of solid particles such as Morena limestone in the distribution chamber (5) formed in the lower part of the vertical riser (6) at regular intervals by removing the distribution plate (4) having a plurality of through holes (4a). The separation chamber 8 is filled in the upper portion of the upper array plate 14 so that high-temperature exhaust gas containing a large amount of pollutants discharged from the urine, such as an industrial boiler, flows in through the exhaust gas inlet 2. When the plurality of through holes (4a) are passed through the distribution plate 4 It flows into the distribution chamber 5 of exhaust gas. In this process, when the exhaust gas passes through the plurality of through holes 4a of the distribution plate 4, the solid particles form a solid particle fluidized bed in the exhaust gas distribution chamber 5, and at the same time, Through the vertical riser tube 6 extending downward, the solid particles rise while being fluidized with the exhaust gas and flow into the separation chamber 8 above the heat exchanger. In the upper part of the heat exchanger, the exhaust gas is separated from the solid particles and discharged through the outlet 3 of the heat exchanger. The solid particles are separated from the exhaust gas by their own weight, and the upper array plate 14 and the cross section maintain a plane. It is conveyed to the distribution chamber 5 which is the lower fluidized-bed part of a heat exchanger through the vertical down pipe 7. At this time, by installing the solid particle separator 13 in the upper portion of the separation chamber 8 it is possible to more effectively separate the exhaust gas and the solid particles. Therefore, the solid particles are fluidized in the arrangement of the vertically rising pipe 6 and the vertically falling pipe 7 of the heat exchanger to automatically circulate, thereby disturbing the boundary layer of the heat transfer surface to increase heat transfer and at the same time transferring the fluid by the fluidization of the solid particles. Since the cleaning function of the hot surface occurs, it can play a role of suppressing the accumulation of contaminants on the heat transfer surface. As the solid particles used here, sand or limestone particles are used. When limestone particles are used, chemical reactions with components such as SOx and NOx in the exhaust gas are neutralized to purify the exhaust gas. In addition, by reducing the corrosion component of the exhaust gas it is possible to suppress the corrosion of the material of the heat transfer surface of the heat exchanger.

따라서 고체입자의 순환유동층 열교환기 청소의 필요성을 감소시켜 별도의 청소작업이 필요하지 않거나 청소의 횟수를 줄여 열교환기의 작동시간을 증대시키므로서 시스템의 생산성을 향상시키는 동시에 전열면의 오염물질 제거와 배기가스 내의 산성성분의 중화로 인하여 열교환기의 전열관의 수명을 증대시켜 열교환기의 경제성을 향상시킬 수 있는 것이다.Therefore, the need for cleaning the circulating fluidized bed heat exchanger of the solid particles does not require additional cleaning work or reduces the number of cleanings, thereby increasing the operating time of the heat exchanger, thereby improving system productivity and removing contaminants from the heat transfer surface. Due to the neutralization of the acidic components in the exhaust gas it is possible to increase the life of the heat exchanger tube of the heat exchanger to improve the economics of the heat exchanger.

본 발명은 산업체의 보일러 등의 요로로부터 배출되는 다량의 오염물질을 함유한 고온의 배기가스로 부터 효율적으로 폐열을 회수하기 위한 자체적인 청소기능을 가진 고체입자를 이용한 폐열회수용 순환유동층 열교환기에 관한 것이다.The present invention relates to a circulating fluidized bed heat exchanger for waste heat recovery using solid particles having a self-cleaning function for efficiently recovering waste heat from a high temperature exhaust gas containing a large amount of pollutants discharged from a urine such as an industrial boiler. will be.

Claims (4)

열교환기 동체(1)의 하단부에 배기가스 유입구(2)를 형성하고 상단부에 배기가스배출구(3)를 형성한 내부 중앙부에 전열 배기가스 수직상승관(6)을 설치하여 수직상승관(6)의 상부에 위치되도록 열교환기 동체(1)에 냉각유체입구(9)를 형성 하고 수직 상승관(6)의 하부에 위치되도록 열교환기 동체(1)에 가열유체 출구(10)를 형성한 것에 있어서 수직상승관(6)의 하부에 다수의 통공(4a)을 뚫은 분배판(4)을 설치하여 분배실(5)을 형성하고 여기에 고체입자를 충진 하므로서 배기가스가 분배판(4)에 다수 뚫은 통공(4a)을 통과할 때 분배실(5)에서 고체입자의 유동층을 형성하고 유동화된 고체입자는 배기가스와 함께 수직상승관(6)으로 유입되어 상승하고 수직상승관(6) 배열의 상부로 유입된 고체입자는 자중에 의하여 배기가스와 분리되어 수직하강관(7)을 통하여 하강되어 다시 분배판(40 위의 분배실(5)로 되돌아와 유동층을 형성하게 되어 고체입자가 열교화기의 수직상승관(6)과 수직하강관(7) 사이를 자동적으로 순환하게 한 배기가스 폐열회수용 고체입자 순환유동층 열교환기.A vertical rise pipe (6) by installing an exhaust gas inlet (2) at the lower end of the heat exchanger body (1) and a vertical heat riser (6) at the inner center where the exhaust gas outlet (3) is formed at the upper end. In which the cooling fluid inlet 9 is formed in the heat exchanger body 1 so as to be located at the top of the heating body, and the heating fluid outlet 10 is formed in the heat exchanger body 1 so as to be located at the bottom of the vertical riser 6. In the lower part of the vertically rising pipe 6, a distribution plate 4 having a plurality of through holes 4a is installed to form a distribution chamber 5, and the solid gas is filled therein so that exhaust gas flows into the distribution plate 4 in a large number. When passing through the through hole 4a, a fluidized bed of solid particles is formed in the distribution chamber 5, and the fluidized solid particles are introduced into the vertical riser 6 together with the exhaust gas to rise and rise in the vertical riser 6 array. The solid particles introduced into the upper portion are separated from the exhaust gas by their own weight, through the vertical down pipe (7). The exhaust gas is lowered and returned to the distribution chamber 5 above the distribution plate 40 to form a fluidized bed so that the solid particles automatically circulate between the vertical rising pipe 6 and the vertical falling pipe 7 of the heat exchanger. Solid particle circulating fluidized bed heat exchanger for waste heat recovery. 제1항에 있어서 수직상승관(6)을 배열격판(14)(14a) 보다 상,하로 길게 연장시켜 설치하고 배열격판(14)(14a)의 중앙에는 수직하강관(7)을 설치하되 양단면이 배열격판(14)(14a)의 중앙에는 수직하강관(7)을 설치하되 양단면이 배열격판(14)(14a)의 상,하면과 평면이 유지되게 하여서된 배기가스 폐열회수용 고체입자 순환유동층 열교환기.According to claim 1, wherein the vertical riser tube 6 extends up and down longer than the array plate 14, 14a and is installed in the center of the array plate (14, 14a), the vertical down pipe (7) A vertical down pipe (7) is installed at the center of the array plate (14) (14a) and its cross section is maintained so that the top and bottom surfaces of the array plate (14) (14a) are kept flat. Particle Circulating Fluidized Bed Heat Exchanger. 열교환기의 작동이 중지한 경우에는 열교환기 내의 고체입자 일부는 자중에 의하여 분배판(4)의 다수의 통공(4a)을 통과하여 고체입자 탱크(11)에 저장되게한 배기가스 폐열회수용 고체입자 순환유동층 열교환기.When the heat exchanger is stopped, some of the solid particles in the heat exchanger pass through the plurality of through holes 4a of the distribution plate 4 by their own weight and are stored in the solid particle tank 11 so as to be stored in the waste gas waste heat recovery solid. Particle Circulating Fluidized Bed Heat Exchanger. 열교환기의 작동을 시작할 경우에는 먼저 배기가스가 열교환기를 통과하도록 한 다음에 고체탱크(11)에 들어있는 고체입자를 고체입자 이송장치(12)를 사용하여 열교환기 상부로 이송시켜 열교환기 내에 배열된 수직 하강관(7)으로 공급시켜 분배실(5)내에서 유동층을 형성하면서 각 수직상승관(6)으로 배기가스와 함께 상승하면서 순환유동층을 형성하도록 한 배기가스 폐열회수용 고체입자 순환유동층 열교환기.When the heat exchanger starts to operate, the exhaust gas passes through the heat exchanger, and then the solid particles contained in the solid tank 11 are transferred to the upper part of the heat exchanger using the solid particle transfer device 12 and arranged in the heat exchanger. The solid particle circulating fluidized bed for waste heat recovery of exhaust gas which is fed to the vertical down pipe 7 to form a fluidized bed in the distribution chamber 5 and forms a circulating fluidized bed while rising together with the exhaust gas to each vertical rising pipe 6. heat transmitter.
KR1019970022692A 1997-06-02 1997-06-02 Heat exchanger with circulating layer of solid particle for collecting waste heat of exhaust gas KR100242226B1 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9360232B2 (en) 2012-08-23 2016-06-07 Korea Institute Of Energy Research Fluidized bed heat exchange apparatus for recovering heat of flue gas for producing high temperature water
KR20160145242A (en) 2015-06-09 2016-12-20 한국에너지기술연구원 The optimized condensing heat recovery system using absorbing liquid fluidized bed heat exchanger and front heat exchanger for boiler flue gas
KR20170014080A (en) 2015-07-28 2017-02-08 한국에너지기술연구원 A fluidized bed heat exchanger for condensing heat recovery from multi-type heat sources
KR101705993B1 (en) 2015-10-29 2017-02-10 한국에너지기술연구원 The optimized condensing heat recovery system using absorbing liquid fluidized multi-bed heat exchanger
KR20180116930A (en) 2017-04-18 2018-10-26 한국에너지기술연구원 A muti­stage fluidized bed heat exchanger for waste water heat recovery from multi­type heat sources
KR20210123874A (en) 2020-04-06 2021-10-14 첨단엔지니어링 주식회사 Self-cleaning type Water fluidized bed heat exchanger with the solid moving bodies

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KR100519803B1 (en) * 2002-12-03 2005-10-10 한국에너지기술연구원 A circulating fluidized bed device with multiple vertical tubes using the high suspension density fluid mixture of solid particles and gas
KR100731250B1 (en) * 2005-09-08 2007-06-22 전용두 Heat exchanger for heat recovery or cooling
KR100873574B1 (en) * 2007-04-19 2008-12-12 성균관대학교산학협력단 Fluidization reactor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9360232B2 (en) 2012-08-23 2016-06-07 Korea Institute Of Energy Research Fluidized bed heat exchange apparatus for recovering heat of flue gas for producing high temperature water
KR20160145242A (en) 2015-06-09 2016-12-20 한국에너지기술연구원 The optimized condensing heat recovery system using absorbing liquid fluidized bed heat exchanger and front heat exchanger for boiler flue gas
KR20170014080A (en) 2015-07-28 2017-02-08 한국에너지기술연구원 A fluidized bed heat exchanger for condensing heat recovery from multi-type heat sources
KR101705993B1 (en) 2015-10-29 2017-02-10 한국에너지기술연구원 The optimized condensing heat recovery system using absorbing liquid fluidized multi-bed heat exchanger
KR20180116930A (en) 2017-04-18 2018-10-26 한국에너지기술연구원 A muti­stage fluidized bed heat exchanger for waste water heat recovery from multi­type heat sources
KR20210123874A (en) 2020-04-06 2021-10-14 첨단엔지니어링 주식회사 Self-cleaning type Water fluidized bed heat exchanger with the solid moving bodies

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