KR0175220B1 - Heat transfer - Google Patents

Heat transfer Download PDF

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Publication number
KR0175220B1
KR0175220B1 KR1019960019850A KR19960019850A KR0175220B1 KR 0175220 B1 KR0175220 B1 KR 0175220B1 KR 1019960019850 A KR1019960019850 A KR 1019960019850A KR 19960019850 A KR19960019850 A KR 19960019850A KR 0175220 B1 KR0175220 B1 KR 0175220B1
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KR
South Korea
Prior art keywords
water
exhaust gas
perforated plate
heat transfer
fluidized bed
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KR1019960019850A
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Korean (ko)
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KR980003450A (en
Inventor
박영재
박상일
최경빈
하영진
박기호
고창복
김정근
Original Assignee
손영목
재단법인한국에너지기술연구소
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Priority to KR1019960019850A priority Critical patent/KR0175220B1/en
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    • 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
    • F28D21/001—Recuperative heat exchangers the heat being recuperated from exhaust gases for thermal power plants or industrial processes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/006—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for regenerative heat-exchange apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G15/00—Details
    • F28G15/003—Control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
    • F28G9/005—Cleaning by flushing or washing, e.g. with chemical solvents of regenerative heat exchanger

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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)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

본 발명은 염색업체의 텐터기로부터 배출되는 오염물질을 함유한 배기가스로부터 폐열을 회수하기 위하여 배기가스 연도에 열교환기를 설치하고 테프론 코팅한 열교환기의 전열관 배열사이에 정기적으로 물을 공급시켜 물유동층을 형성하므로서 전열관의 표면에 생성된 오염물질의 축적물을 자동적으로 세척하는 기능을 갖추었다.In the present invention, a heat exchanger is installed in an exhaust gas flue for recovering waste heat from an exhaust gas containing contaminants discharged from a tenter of a dyeing company, and water is periodically supplied between the arrangement of heat transfer tubes of a Teflon- So as to automatically clean the accumulated contaminants generated on the surface of the heat transfer pipe.

전열관 배열 밑에 다공판을 설치하였고 다공판 역시 오염물질의 축적을 줄이기 위하여 테프론으로 코팅하였으며 다공판의 구멍을 비교적 크게 하여 오염에 의한 영향을 줄였다.A perforated plate was installed underneath the heat transfer pipe array, and the perforated plate was also coated with Teflon to reduce the accumulation of contaminants.

열교환기를 물유동층에 의하여 청소하는 동안 물을 계속적으로 공급하며 물유동층의 높이를 일정한 위치로 조절하였다.While the heat exchanger was cleaned by the water fluidized bed, water was continuously supplied and the height of the fluidized bed was adjusted to a fixed position.

그리고 청소기간이 끝난 후에는 물유동층에 남아 있는 오염된 물을 배출하기 위하여 물의 배출구를 설치하여서된 것이다.After the cleaning period, the water outlet is installed to discharge the contaminated water remaining in the fluidized bed of water.

Description

텐터기 배기가스 폐열회수용 열 교환기Heat exchanger for waste heat recovery

첨부도면은 본 발명의 실시예시도의 종단면도.BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal sectional view of an embodiment of the present invention. Fig.

* 도면의 주요부분에 대한 부호의 설명DESCRIPTION OF THE REFERENCE NUMERALS

1 : 동체 2 : 배기가스유입구1: Fuselage 2: Exhaust gas inlet

3 : 배기가스유도관 4 : 갓3: exhaust gas induction pipe 4: freshly

5 : 배수구 6 : 다공판5: drain hole 6: perforated plate

7 : 배수관 8,11 : 자동조절밸브7: Water pipe 8,11: Automatic regulating valve

9 : 열교환전열관 10 : 급수관9: heat exchange tube 10: water pipe

12 : 배출구 A : 분리장치12: Outlet A: Separation device

본 발명은 염색업체의 텐터기로부터 배출되는 오염물질을 함유하는 배기가스로부터 폐열을 회수하기 위하여 오염문제를 해결한 텐터기 배기가스 폐열회수용 열교환기에 관한 것이다.The present invention relates to a waste heat recovery heat exchanger for recovering waste heat from exhaust gas containing contaminants discharged from a tenter machine of a dyeing company.

종래의 열교환기는 텐터기 배기가스내 함유된 오염물질이 열교환기의 전열면에 응축되어 적층축적되므로서 열교환 효율 감소시키는 동시에 심할 경우에는 전열관 사이로 형성되는 유로를 막게되어 열교환기의 수명을 단축시키는 문제점이 있었다.In the conventional heat exchanger, the pollutants contained in the exhaust gas of the tenter are condensed on the heat transfer surface of the heat exchanger to accumulate and accumulate the laminates, thereby reducing the heat exchange efficiency and, at the same time, blocking the flow path formed between the heat transfer tubes to shorten the life of the heat exchanger .

본 발명은 이와같은 문제점들을 해결하기 위하여 열교환기의 전열관 배열사이에 정기적으로 물을 공급시켜 물유동층을 형성하므로서 전열관의 표면에 생성되는 오염물질의 축적물을 자동적으로 세척하는 기능을 갖추게 하였다.In order to solve these problems, the present invention has a function of automatically cleaning the accumulation of contaminants generated on the surface of the heat transfer pipe by supplying water regularly between the heat transfer tube arrangement of the heat exchanger to form a fluidized bed.

전열관의 배열사이에 물유동층을 형성시키기 위하여 배열된 전열관의 밑에 다공판 설치하므로서 열교환기에 공급되는 배기가스에 의하여 전열관 사이에 물유동층이 형성되도록하고 다공판에는 오염물질의 축적을 줄이기 위하여 테프론으로 코팅처리하고 다공판의 구멍을 비교적 크게 뚫어 오염에 의한 영향을 줄였다.By providing a perforated plate below the heat transfer tubes arranged to form a fluidized bed between the arrangements of heat transfer tubes, a fluidized bed of water is formed between the heat transfer tubes by the exhaust gas supplied to the heat exchanger, and the perforated plates are coated with Teflon Treated and drilled relatively large holes in the perforated plate to reduce the effects of contamination.

열교환기를 물유동층에 의하여 오염물질을 청소하는 동안 물유동층으로 물을 계속적으로 공급하면 배열된 전열관 바로 위에 물의 배출구를 설치하여 물유동층의 높이가 배열된 전열관의 높이보다 높게된 경우 오염물질을 함유된 물이 자동적으로 배출되도록 하여 물유동층의 높이가 항상 일정한 위치에 있게 하였다.If the water heat exchanger is continuously supplied with water to the fluidized bed while the contaminants are being cleaned by the fluidized bed, if the outlet of the water is arranged directly above the arranged heat transfer tubes and the height of the fluidized bed is higher than the height of the heat transfer tubes arranged, The water was automatically discharged so that the height of the fluidized bed was always constant.

그리고 청소시간이 끝난 후에는 배열된 전열관 사이에 남아있는 오염물질을 함유한 물을 배출하기 위하여 다공판과 전열관사이에 물을 배출시키는 배출구를 설치하여 배출관에 자동조절밸브를 설치하였다.After the cleaning time is over, an outlet for discharging water between the perforated plate and the heat transfer pipe is installed to discharge the water containing contaminants remaining between the arranged heat transfer tubes, and an automatic regulating valve is installed in the discharge pipe.

이 자동조절밸브는 전기적인 작동에 의하여 자동적으로 물 청소기간동안에는 잠기고 그 외의 시간에는 열리도록 하였다.This automatic regulating valve was automatically closed by electrical operation during the water cleaning period and opened at other times.

그리고 오염물질을 함유한 물이 다공판 밑으로 흘러내려간 경우를 대비하여 다공판 밑부분의 배기가스유도통로에 배수구를 설치하여 집수 배수되게 하였다.Also, in case that water containing contaminants flows down to the perforated plate, a drainage hole is installed in the exhaust gas guide passage at the bottom of the perforated plate to collect and drain the water.

이와같이된 본 발명을 실시예시도에 의하여 상세히 설명하면 다음과 같다.The present invention will now be described in detail with reference to the accompanying drawings.

열교환기의 동체(1)의 하부에 텐터기의 연도에 연관되는 배기가스유입구(2)를 형성하고 그 내부에 테이퍼진 배기가스유입관(3)을 설치하고 그 상부에 삿갓형 물흐름방지 갓(4)을 일전간격이 유지되게 설치고정한 오염물질을 함유한 물과 유입되는 배기가스를 분리시키는 분리장치(A)를 구성하여 테이퍼진 배기가스 유도관(3)이 설치고정된 부위의 동체(1)의 일측에 배수구(5)를 형성하며 분리장치(A)의 상부에 단면이 형으로 된 다공판(6)의 표면에 테프론 코팅처리하여 설치하고 설치부위의 동체(1)에 배수관(7)을 설치하여 자동조절밸브(8)를 설치하고 다공판(6)의 상부에는 테프론 코팅처리한 열교환전열관(9)을 다수배관하고 그 상부에 급수관(10)을 설치하여 자동조절밸브(11)을 설치하고 타측에는 물유동층 수위조절 배출구(12) 형성하여서 된 것이다.An exhaust gas inlet port (2) associated with the flue of the tenter unit is formed in the lower part of the body (1) of the heat exchanger, and a tapered exhaust gas inlet pipe (3) is provided therein. (A) for separating the water containing contaminants and the inflowing exhaust gas, which is fixedly installed at a previous interval, and is connected to the moving body (4) at a site where the tapered exhaust gas induction pipe (3) 1 on the surface of the perforated plate 6 having a cross section formed on the upper part of the separating device A and the pipe 1 of the installation part is provided with a drain pipe 7 A plurality of heat exchange tubes 9 are disposed on the upper portion of the perforated plate 6 and Teflon coating is applied to the upper portion of the perforated plate 6. A water supply pipe 10 is installed on the upper portion of the heat exchange tube 9, And an outlet port (12) for regulating the water level in the fluidized bed is provided on the other side.

미설명부호 13은 배기가스 배출구이다.Reference numeral 13 denotes an exhaust gas outlet.

이상과 같이 된 본 발명의 작용효과를 설명하면 다음과 같다.The operation and effect of the present invention will be described as follows.

텐터기 연도에 열교환기 동체(1)의 배기가스유입구(2)를 연관시키면 텐터기에서 발생된 배기가스가 유입구(2)로 유입되어 테이퍼진 배기가스유입관(3)과 일정간격을 유지되게 설치된 삿갓형 물흐름방지 갓(4)으로 이루어진 오염물질을 함유한 물을 분리시키는 분리장치(A)를 통하여 단면이 형의 다공판(6)을 거쳐 열교환기의 전열부인 전열관(9)의 배관 사이로 통과하게 된다.When the exhaust gas inlet 2 of the heat exchanger body 1 is associated with the tenter cylinder flue, the exhaust gas generated in the tenter unit flows into the inlet 2 and is maintained at a constant interval from the tapered exhaust gas inlet pipe 3 (6) of a cross-sectional shape through a separating device (A) for separating water containing a pollutant composed of an installed sachet type water-flow preventing lid (4) .

이와같이 유입되는 배기가스는 전열관(9) 내부의 물 또는 공기 등의 유체와 열교환하면서 냉각된다.The thus introduced exhaust gas is cooled while exchanging heat with water or a fluid such as air inside the heat transfer pipe 9. [

냉각된 배기가스는 배기가스 배출구(13)를 통하여 대기중에 배출된다.The cooled exhaust gas is discharged to the atmosphere through the exhaust gas outlet (13).

다공판(6)과 전열관(9)의 표면은 테프론으로 코팅처리하여 오염물질의 축적을 감소시킬 수 있다.The surfaces of the perforated plate 6 and the heat transfer pipe 9 can be coated with Teflon to reduce the accumulation of contaminants.

그리고 다공판(6)은 전열관(9)에 비하여 비교적 고온으로 유지되어 오염물질의 응축으로 인한 오염의 가능성이 적으나 다공판(6)의 구멍들의 크기를 가능한 크게하여 오염물질의 축적으로 인한 문제를 적게할 수가 있다.The perforated plate 6 is maintained at a relatively high temperature as compared with the heat transfer pipe 9, so that the possibility of contamination due to the condensation of the contaminant is small, but the size of the holes of the perforated plate 6 is made as large as possible, Can be reduced.

전열관(9)은 표면온도가 비교적 낮게 유지되어 배기가스에 함유된 오염물질의 축적 가능성이 높다.The surface temperature of the heat transfer pipe 9 is kept relatively low and the possibility of accumulating the pollutants contained in the exhaust gas is high.

그러나 이러한 전열관(9) 표면에 축적된 오염물질은 일정시간 물을 공급하게되면 배기가스압력에 의하여 물유동층 즉 물의 일정수위를 뚫고 통과하게 되므로 기포가 형성되면서 전열관(9)의 배관사이에 진동을 주는 물유동층을 형성하게되어 축적된 오염물질을 제거하게 된다.However, if the pollutants accumulated on the surface of the heat transfer pipe 9 are supplied with water for a predetermined time, the water flows through the water flowing layer, that is, a certain water level of the water by the exhaust gas pressure so that the air bubbles are formed and vibration is generated between the pipes of the heat transfer pipe The water forms a fluidized bed and removes accumulated pollutants.

전열관(9)의 표면을 청소하기 위한 물은 급수관(8)에 설치된 자동조절밸브(11)에 의하여 일정시간동안 일정간격으로 열교환 전열관(9) 외부에 공급할 수 있도록 하였다.The water for cleaning the surface of the heat transfer pipe 9 is supplied to the outside of the heat exchange tube 9 at regular intervals for a predetermined time by the automatic control valve 11 provided in the water supply pipe 8.

열교환기로 공급된 물은 텐터기의 배기가스 압력에 의하여 다공판(6)위의 전열관(9)의 배관사이로 기포를 일으키며 진동을 발생하는 물유동층을 형성하며 시간이 지남에 따라 물유동층의 상면이 점점 높아져서 물유동층의 높이가 물유동층 수위조절 배출구(12) 위치보다 높아지게 되면 자동적으로 배출구(12)로 배출되므로 물유동층의 높이는 항상 일정하게 유지할 수 있다.The water supplied to the heat exchanger forms bubbles between the pipes of the heat transfer pipe (9) on the perforated plate (6) by the exhaust gas pressure of the tenter and forms a water fluidized bed that generates vibration, and the upper surface of the water fluidized bed The height of the water fluidized bed is automatically discharged to the outlet 12 when the height of the water fluidized bed is higher than the position of the water fluidized bed level regulating outlet 12, so that the height of the water fluidized bed can be always kept constant.

이러한 청소기간동안에 전열관(9)의 외부에 축적된 오염물질은 깨끗이 청소되며 오염물은 물과 함께 배출구(12)를 통하여 열교환기 밖으로 배출된다.During this cleaning period, the pollutants accumulated on the outside of the heat transfer pipe (9) are cleaned and the pollutants are discharged together with the water through the discharge port (12) out of the heat exchanger.

그리고 위에서와 같이 일정시간동안 물청소하게 되면 다공판(6)의 일측 동체(1)에 설치된 배수관(7)의 자동조절밸브(8)가 청소시간에는 잠겨있다가 그 외의 시간에는 열려있게 되므로 물유동층을 형성하고 있던 물은 자동적으로 배출관으로 배출된다.When the water is cleaned for a predetermined period of time as described above, the automatic regulating valve 8 of the drain pipe 7 provided at one side body 1 of the perforated plate 6 is locked at the time of cleaning and is opened at other times, The water forming the fluidized bed is automatically discharged to the discharge pipe.

다공판(6)의 기공율은 다공판(6)위에서 물유동층을 형성하는 경우 오염물질을 함유한 물이 다공판(6)의 구멍을 통하여 밑으로 흘러내리지 않도록 조절하였으나 어떠한 경우 즉 배기가스압력이 급격히 약화되는 경우에 다공판(6)의 구멍을 통하여 오염물질을 함유한 물 등이 흘러내리는 경우를 대비하여 다공판(6) 밑부분에 오염물질을 함유한 물과 유입되는 배기가스를 분리시키는 분리장치(A)를 설치하였으며 테이퍼진 배기가스 유도관(3)의 상부외주에 모인 오염물질을 함유한 물은 동체(1)의 일측에 형성한 배수구(5)를 통하여 밖으로 배출되게 하였다.The porosity of the perforated plate 6 is controlled so that water containing contaminants does not flow down through the perforations of the perforated plate 6 when the fluidized bed is formed on the perforated plate 6, In the case where water containing pollutants flows down through the holes of the perforated plate 6 in case of a sudden weakening, the water containing pollutants and the exhaust gas flowing into the bottom of the perforated plate 6 are separated from each other Water containing contaminants collected on the outer periphery of the upper end of the tapered exhaust gas induction pipe 3 is discharged to the outside through a drain port 5 formed on one side of the body 1. [

이상과 같이 구성하므로서 텐터기에서 배기가스를 이용하여 열교환할 때 오염물질이 열교환전열관(9)에 축적되는 것을 깨끗이 청소할 수 있어 효율적으로 열교환기를 거두는 동시에 열교환기의 수명을 연장시킬 수 있는 이점이 있는 것이다.With the above configuration, it is possible to clean the accumulation of contaminants in the heat exchange tube 9 when exchanging heat using the exhaust gas in the tenter, thereby effectively collecting the heat exchanger and extending the service life of the heat exchanger will be.

Claims (3)

열교환기의 동체 하부에 텐터기의 연도에 연관되는 배기가스유입구를 형성하고 그 내부에 오염물질을 함유한 물과 유입되는 배기가스를 분리시키는 분리장치를 설치하고 분리장치의 상부에 표면에 테프론 코팅처리한 다공판을 설치하고 다공판의 상부에는 테프론 코팅처리한 열교환 전열관을 다수배관 설치하며 그 상부에는 자동조절밸브를 구비한 급수관(10)과 물유동층 수위조절배수구를 설치하고 다공판의 설치고정부에는 자동조절밸브 구비한 배수관(7)을 설치하여서 된 텐터기 배기가스 폐열회수용 열 교환기.An exhaust gas inlet connected to the flue of the tenter frame is formed in the lower part of the body of the heat exchanger and a separating device for separating the water containing contaminants from the exhaust gas flowing into the flue gas inlet is provided. A plurality of heat exchanging heat pipes having a Teflon coating treatment are installed on the upper part of the perforated plate, and a water supply pipe (10) having an automatic regulating valve and a water fluidized bed water level control drain are installed on the upper part of the heat exchanging heat transfer pipe, And a drain pipe (7) provided with an automatic regulating valve. 제1항에 있어서, 오염물질을 함유한 물과 유입되는 배기가스를 분리시키는 분리장치는 테이퍼진 배기가스유도관을 설치하고 그 상부에 삿갓형 물흐름방지 갓(4)을 일정간격이 유지되게 고정설치하여서 된 텐터기 배기가스 폐열회수용 열 교환기.The separating device for separating contaminant-containing water and exhaust gas from the exhaust gas according to claim 1, wherein a tapered exhaust gas induction pipe is provided, Waste Heat Recovery Heat Exchanger for Fixed Installation of Exhaust Tenters. 제1항에 있어서, 분리장치의 상부에 단면이 형으로된 다공판을 설치하여 다공판 설치부의 동체 일측에 자동조절밸브를 구비한 배수관을 설치하여서 된 텐터기 배기가스 폐열회수용 열 교환기.The heat exchanger according to claim 1, wherein a perforated plate having a cross-sectional shape is provided on an upper portion of the separating device and a drain pipe having an automatic regulating valve is provided on one side of the perforated plate mounting portion.
KR1019960019850A 1996-06-04 1996-06-04 Heat transfer KR0175220B1 (en)

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KR100500697B1 (en) * 2002-10-21 2005-07-12 한국에너지기술연구원 A multi-stage heat recovery system with the water-fluidized-bed heat exchanger
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