KR20090046334A - The keeping warm cover contrivance to by waste heat recovery - Google Patents

The keeping warm cover contrivance to by waste heat recovery Download PDF

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KR20090046334A
KR20090046334A KR1020070112405A KR20070112405A KR20090046334A KR 20090046334 A KR20090046334 A KR 20090046334A KR 1020070112405 A KR1020070112405 A KR 1020070112405A KR 20070112405 A KR20070112405 A KR 20070112405A KR 20090046334 A KR20090046334 A KR 20090046334A
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billet
furnace
cover
heating
heat
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KR1020070112405A
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Korean (ko)
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KR100910787B1 (en
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김병수
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항진철강(주)
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/32—Casings
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/36—Arrangements of heating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/18—Door frames; Doors, lids, removable covers
    • F27D1/1808—Removable covers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

본 발명은 연속주조 공정으로 제조된 빌릿(Billet)(b) 등의 반제품을 가열하여 열간 압연공정에 투입하기 위하여 상기 반제품의 가열소재를 적정온도에서 가열하는 압연가열로(1)의 내부에 빌릿(Billet)(b)을 장입 시킬 때 가열로 장입부(17a)에 외부의 공기가 유입되는 것을 최소화함으로써 압연가열로(1)의 열효율을 극대화 시킬 수 있는 가열로용 외부공기 차단장치에 관한 것이다.The present invention is a billet in the interior of the rolling furnace (1) for heating the heating material of the semi-finished product at an appropriate temperature in order to heat the semi-finished product such as the billet (b) produced by the continuous casting process to the hot rolling process (B) to the external air cut-off device for the furnace that can maximize the thermal efficiency of the rolling furnace (1) by minimizing the introduction of outside air into the furnace charging unit (17a) when charging (b). .

기존의 가열로 입구의 폐열방지용 장입 장치들로서는 가열소재의 투입과정에서의 외부공기 유입과 가열열의 유출을 최소화시키는데 일정한 한계의 부면이 있었던바, 가열로 입구에 빌릿 예열테이블(15)을 고정시킨 다음, 측면부와 상면부가 외부와 차단된 특수단열재질의 보온커버(Cover)(11)를 고정설치하고 빌릿 이송롤(19)을 기존의 측면반입방식에서 보온커버(11)의 정면반입방식으로 하여 보온커버 정면의 빌릿 공급부(17c)에서 빌릿이송롤러 테이블(16)의 빌릿통과부(17b)까지 빌릿이 빌릿이송대(19a)에 실리어 적절히 통과할 수 있는 규모의 삼각지붕 관 형태의 예비 보온커버(12)를 또한 고정설치 함으로써 가열로의 빌릿장입부(17a)에서 빌릿이송롤러테이블(16) 전방선단부까지 보온커버를 설비함으로써 압연가열로(1)의 폐열손실을 극소화하여 에너지 비용절감을 가능케 하여 주는 압연가열로의 빌릿장입테이블의 보온커버(Cover)(11)의 제공에 관한 발명이다.Conventional furnace charging devices for preventing waste heat at the inlet have a certain limit in minimizing the inflow of the outside air and the outflow of the heating heat during the input of the heating material. The billet preheating table 15 is fixed to the inlet of the furnace. Next, the thermal insulation cover (Cover) 11 of the special insulation material is fixed to the side and the upper surface is blocked from the outside, and the billet feed roll (19) insulated by the front side of the thermal cover 11 in the conventional side loading method A preliminary thermal insulation cover in the form of a triangular roof tube of a size that allows the billet to pass through the billet feeder 19a appropriately from the billet supply section 17c on the front of the cover to the billet passing section 17b of the billet feed roller table 16. Also, by fixing (12), a heat insulating cover is installed from the billet charging portion 17a of the heating furnace to the front end of the billet feed roller table 16 to minimize the waste heat loss of the rolling furnace 1 to reduce the energy ratio. The present invention relates to the provision of a heat insulating cover (Cover) 11 of a billet charging table in a rolling furnace that enables the reduction of melting.

가열로, 빌릿(Billet), 장입부, 보온커버(Cover), 예열장치 Furnace, Billet, Charging Unit, Insulation Cover, Preheater

Description

빌릿 예열을 위한 폐열보온커버장치{THE KEEPING WARM COVER CONTRIVANCE TO BY WASTE HEAT RECOVERY}Waste heat insulation cover device for preheating billet {THE KEEPING WARM COVER CONTRIVANCE TO BY WASTE HEAT RECOVERY}

본 발명은 연속주조공정으로 제조된 빌릿 등의 반제품을 열간 압연공정에 투입하기 전 상기 반제품을 적정온도인 1150~1300℃로 가열하기 위한 압연가열로의 장입부의 폐열을 공기 중으로 방열되는 것을 최소화하기 위한 보온커버(Cover)에 관 한 것이다.The present invention is to minimize the heat dissipation of the waste heat of the charging portion of the charging furnace for heating the semi-finished products, such as billets manufactured by the continuous casting process in the hot rolling process before heating the semi-finished products to a suitable temperature 1150 ~ 1300 ℃ It is about the insulation cover (Cover) for.

가열로의 빌릿장입부(17a)와 보온커버(Cover)(11)의 빌릿통과부(17b)에 빌릿통과틀(13)을 내장하여 일정개수의 빌릿을 빌릿이송대(19a)에 적치하여 연속적으로 연이어 공급함으로써 빌릿이 적치된 빌릿이송대(19a)가 빌릿통과틀(13)의 빌릿통과구(13a)를 통과하면서 통과구의 열방출을 막는 역할도 하며 압연 가열로(10)의 빌릿장입부(17a)의 빌릿통과틀(13)의 통과구(13a)와 빌릿이송대(19a) 사이의 미세한 틈으로 방출되는 폐열은 장치된 보온커버(11)에 의해 단속되어 축열된 뒤에 커버(Cover) 내에 일정온도가 850~950℃에 다달으면 연이어 공급되는 빌릿(b) 중에 보온커버(11)를 통과하는 빌릿(b)을 예열하여 줌으로서 가열로(10) 내부로의 장입 시에 예열량 만큼의 가열열의 소모를 줄일 수 있는 것이다.The billet penetrating unit 13 is built into the billet charging unit 17a of the heating furnace and the billet penetrating unit 17b of the heat insulating cover 11, and a certain number of billets are placed on the billet feeder 19a and continuously. The billet feeder 19a in which the billet is loaded by passing through the billet passage 13a of the billet passage frame 13a prevents heat release of the passage opening. Waste heat discharged into the minute gap between the passage opening 13a of the billet passing frame 13 and billet feeder 19a of (17a) is interrupted by the installed heat insulating cover 11, and the cover is covered. When the predetermined temperature reaches 850 to 950 ° C., the billet (b) passing through the thermal cover (11) is preheated among the billets (b) to be continuously supplied, and the amount of preheating is charged at the time of charging into the furnace (10). It is possible to reduce the consumption of heat of heating.

보온커버의 빌릿통과부(17b)의 빌릿이송대(19a)와 빌릿통과구(13a)와의 미세한 틈으로의 미열의 페열도 보온커버에 연이어 장치한 예비 보온커버(12)에 의해 단속되어 연이어 공급되는 빌릿 중에 예비 보온커버(12)를 통과하는 빌릿(b)을 또한 예열하며 예비 보온커버의 빌릿공급부(17c)에는 빌릿공급도어(20)를 설치하여 빌릿 투입 후에는 스위치 작동에 의해 자동으로 닫히게 하며 미열의 폐열도 방출되지 않도록 한다.The small heat between the billet feeder 19a of the billet passing portion 17b of the thermal cover and the billet passing hole 13a is also intermittently supplied by the preliminary thermal cover 12 attached to the thermal cover. The billet (b) passing through the preliminary thermal insulation cover 12 is also preheated, and the billet supply portion (17c) of the preliminary thermal insulation cover is provided with a billet supply door (20) to automatically close by the switch operation after the billet input. It also prevents the release of waste heat from subfebrile heat.

본 발명은 종래의 가열로(10)가 빌릿(b)을 장입하기 위하여 장입도어를 개방시킬 때 가열로(10) 내부에서 고온의 화염이 외부로 방출됨과 동시에 외부의 공기가 가열로 내부로 유입되었으며 이러한 것을 방지하기 위하여 가열로의 내부에 사절벽(14a)이 설치되었지만 내부화염의 방출 및 외부공기의 유입을 차단하는데 한계가 있었고 이러한 부문을 개선한 발명(출원번호 10-2003-0095901)이 소개되었으나 여전히 빌릿장입을 위한 측면롤러 구동시에는 사이드 도어를 개폐시켜야 함에 따른 폐열의 방출과 외부공기유입의 문제가 여전히 남아 있으므로 상기의 문제점을 해소하고자 가열로(10)의 장입부(17a) 전방에 최적의 축열효과를 낼 수 있는 보온커버(Cover)(11)를 1차로 고정부착되게 설치한 뒤 2차로 빌릿 이송 롤러테이블(16) 위를 삼각 지붕형식의 예비 보온커버(12)를 설치하여 2중의 폐열이용장치를 구비하여 연료절감효과를 극대화시킨 2중의 보온커버장치(11, 12)의 제공에 관한 발명이다.According to the present invention, when the conventional furnace 10 opens the charging door to charge the billet b, the hot flame is discharged to the outside while the outside air flows into the furnace at the same time. In order to prevent this, the trimming wall 14a was installed inside the furnace, but there was a limit to blocking the discharge of internal flame and the inflow of external air, and the invention (Application No. 10-2003-0095901) improved Introduced, but the problem of the discharge of waste heat and external air inflow still remains when the side door to open and close the side roller drive for billet charging, so as to solve the above problems in front of the charging section (17a) of the heating furnace (10) After installing a heat insulating cover (11) fixedly attached to the primary to give an optimal heat storage effect to the secondary, the secondary thermal preservative in the form of a triangular roof on the billet feed roller table (16) The invention relates to providing a 12 that insulating cover (11, 12) of the second maximum fuel savings provided by the installation to the waste heat recovery apparatus of a second.

본 발명은 압연 가열로(10)의 가열소재, 즉 빌릿, 슬래브, 블룸의 가열시에 가열소재의 장입 시 기존의 장입도어 또는 사이드 도어의 개방시에 가열로(10) 내부에서 고온의 화염이 외부로 방출됨과 동시에 외부의 공기가 가열로 내부로 유입되면서 장입부(17a)의 폐열손실은 물론 가열로 내의 가열효율의 저하로 인한 연료비 부담증가라는 문제점을 해결하기 위한 보온 커버장치(11, 12)의 제공에 관한 발명이다.According to the present invention, when a heating material of the rolling furnace 10, that is, a billet, slab, or bloom is heated, a high-temperature flame is generated inside the furnace 10 at the time of opening a conventional charging door or side door. Insulating cover devices 11 and 12 to solve the problem that the external air is introduced into the furnace at the same time as it is discharged to the outside as well as the waste heat loss of the charging unit (17a) as well as the fuel cost burden due to the decrease in the heating efficiency in the furnace (11, 12) Invention is provided.

본 발명은 기존의 폐열손실과 가열로(10)의 가열효율성 저하를 해소하기 위하여 가열로의 가열소재 장입구에 빌릿 통과구(13a)가 개구되어 진 빌릿통과틀(13)을 제작하여 삽입고정 설치하고 빌릿 예열테이블(15)과 빌릿 이송 롤러테이블(16)을 연결고정 설치하고 빌릿 장입부(17a)에서 빌릿 공급부(17c)까지 빌릿이송대(19a)가 빌릿(b)을 적치하여 이동을 하게 되며 빌릿이송대(19a) 하부는 이송롤(19)이 배열되어져 빌릿 공급부(17c)에서 일정수의 빌릿(b)을 빌릿이송대(19a) 위에 얹은 다음 푸셔(18)로 밀어주면 각기의 빌릿(b)은 두 개의 빌릿 통과틀(13)의 각 통과구(13a)로 각기 가열로(10) 안쪽으로 밀려들게 되면서 예열 및 가열과정을 거친다.In order to solve the existing waste heat loss and the lowering of the heating efficiency of the heating furnace (10), the billet passage (13a) having the billet passage opening (13a) opened in the heating material charging opening of the heating furnace is manufactured and inserted and fixed. And the billet preheating table 15 and the billet feed roller table 16 are fixedly installed, and the billet feeder 19a holds the billet b from the billet charging section 17a to the billet supply section 17c. The lower part of the billet feeder 19a has a feed roll 19 arranged thereon so that a certain number of billets b are placed on the billet feeder 19a in the billet feeder 17c and then pushed to the pusher 18, respectively. The billet (b) is pushed into the heating furnace (10), respectively, through each of the passages (13a) of the two billet passing frame 13 undergoes a preheating and heating process.

이 과정에서 빌릿 장입부(17a)의 빌릿 통과틀(13)의 빌릿 통과구(13a)와 빌 릿이송대(19a) 사이로 폐열이 방출되는 것을 단속하기 위해 가열로 장입부(17a) 정면상측부에서 빌릿 예열테이블(15)을 상부와 측부 및 정면을 특수합금재질의 보온커버(11) 장치를 설비하여 폐열을 이용한 빌릿 예열작동을 실시하고, 또한 보온커버의 빌릿 통과부(17b) 정면상측부에서 빌릿 이송 롤러테이블(16)의 빌릿 공급부(17c)까지 부분에 삼각지붕 모양의 예비 보온커버(12)를 설치하여 또한 2중의 폐열활용커버역할을 하게하여 연료비 절감의 효과를 기득하게 하는 예열 보온 커버장치(11,12) 제공에 관한 발명이다.In this process, in order to control that waste heat is discharged between the billet passage opening 13a of the billet passage frame 13 of the billet charging unit 17a and the billet feeder 19a, the front upper part of the furnace charging unit 17a The billet preheating table 15 is equipped with the upper, side, and front surfaces of the thermal insulation cover 11 device made of a special alloy material to perform billet preheating operation using waste heat, and further, the front side of the billet passing portion 17b of the thermal cover. Preliminary heat preservation that installs a triangular roof-type preliminary heat insulation cover 12 to the billet supply portion 17c of the billet feed roller table 16 to serve as a dual waste heat utilization cover. The invention relates to providing cover devices (11, 12).

본 발명의 실시에 의해 열간압연용 가열로(10)의 압연이 용이하도록 가열하기 위한 적정온도인 1200~1300℃를 가능한 적은 연료량을 사용하여 발열할 수 있도록 하여야 하는바 현장의 가열로의 투입된 열량의 약 47% 내지 52% 정도만 소재가열에 사용되고 나머지 열량은 배가스, 노본체의 방산, 노내부의 냉각수전열, 장입과 추출시의 손실열량 등으로 빠져나가는데 이 손실열량의 38% 정도는 가열소재의 장입시에 발생하며 이 장입 손실열량의 86%가 고온 배연가스의 방출에 의한 손실열량인 점에 비추어 장입부의 보온커버(11, 12)와 빌릿 공급부(17c)의 빌릿 공급도어(20)에 의해 25%이상의 가열로의 최대열손실 비중을 해소한 발명이다.According to the practice of the present invention, it is necessary to make it possible to generate heat by using a small amount of fuel at a suitable temperature of 1200 to 1300 ° C. for heating the hot rolling furnace 10 so as to facilitate rolling. Only about 47% to 52% of the heat is used to heat the material, and the remaining heat escapes to the exhaust gas, the heat dissipation of the furnace body, the heat of the cooling water inside the furnace, and the heat loss during charging and extraction. In view of the fact that 86% of the heat loss amount is charged by the discharge of the high-temperature flue gas, the thermal insulation cover 11, 12 of the charge portion and the billet supply door 20 of the billet supply portion 17c This invention solves the specific gravity of the maximum heat loss of more than 25% of the furnace.

본 발명의 실시를 위한 구체적 내용을 도면을 참조하여 상세히 설명한다.Specific details for carrying out the present invention will be described in detail with reference to the drawings.

도 1은 가열로(10)에 보온커버(11) 장치가 되어 있는 측단면도를 도시하였고 도 1-1은 빌릿통과틀(13)의 사시도를 도시하였는데, 가열로(10)의 빌릿장입부(17a)와 보온커버(11) 입구의 빌릿통과부(17b)에 빌릿통과틀(13)을 제작하여 삽입고정설치하고 빌릿예열테이블(15)을 가열로(10)의 빌릿장입부(17a) 정면에 고정설치한 뒤 가열로(10) 입구의 정면 상측부에 보온커버(11)의 상판(11a)이 부착고정되게 하고 빌릿예열테이블(15)의 양측부가 가열로(10) 입구 양측부에 부착고정되게 측면판을 설치하고 정면의 빌릿통과부(17b)의 정면판(11b)도 부착고정하여 가열로(10) 입구의 빌릿예열테이블(15) 부를 보온커버(11)로 밀폐하여 빌릿장입부(17a)의 빌릿통과틀(13)을 통과하는 빌릿이송대(19a)와 빌릿통과구(13a) 사이의 틈으로 방출되는 폐열을 단속하여 축적된 열을 이용하여 빌릿(b)을 예열하게 하여 가열로(10) 내에서의 빌릿(b) 가열시에 보온커버(11)에서의 예열효과만큼의 가열에너지를 절감하는 효과가 있는 것이다.1 is a side cross-sectional view showing a heat insulating cover 11 device in the heating furnace 10, and FIG. 1-1 shows a perspective view of the billet passing frame 13, wherein the billet charging part of the heating furnace 10 ( 17a) and insert and fix the billet passing frame 13 in the billet passing section 17b at the inlet of the heat insulating cover 11, and the billet preheating table 15 is placed in front of the billet loading section 17a of the heating furnace 10. The upper plate 11a of the heat insulating cover 11 is fixed to the upper front side of the inlet of the furnace 10, and both sides of the billet preheating table 15 are attached to both sides of the inlet of the furnace 10. The side plate is installed to be fixed and the front plate 11b of the front billet passing portion 17b is also fixed and the billet preheating table 15 at the inlet of the heating furnace 10 is sealed with the thermal cover 11 to insert the billet inserting portion. Billet using the heat accumulated by interrupting the waste heat discharged into the gap between the billet feeder 19a passing through the billet passing frame 13 of 17a and the billet passing hole 13a. By preheating (b), the heating energy is reduced by the preheating effect of the thermal insulation cover 11 at the time of heating the billet (b) in the heating furnace 10.

또한 압연가열로(10) 입구에 보온커버(11)가 설치되어 있고 그 보온커버(11)의 정면의 하부에 설치되어 있는 빌릿통과틀(13)의 빌릿통과구(13a)와 빌릿이송대(19a) 사이에 보온커버(11)의 축열된 폐열이 미세하나마 방출될 수 있기 때문에 빌릿예열테이블(15)에 연이어 설치되어 있는 빌릿이송롤러테이블(16)의 측면과 상면부를 삼각지붕 모양의 예비 보온커버(12)를 설치하여 빌릿이송롤러테이블(16)에서의 폐열보온기능을 하도록 하였고 예비 보온커버(12)의 정면하단 빌릿공급부(17c)에는 빌릿공급도어(20)를 설치하여 빌릿(b)이 푸셔(18)에 의해 예비 보온커버(2) 안으로 이송롤(19)을 따라 공급되면 스위치 작동에 의해 자동으로 닫히게 하 여 열손실을 최대한 방지하며 빌릿공급부(17c)에서 가열로(10)의 빌릿장입부(17a)까지는 이송롤(19)에 의해 빌릿이송대(19a)가 이송되며, 가열로(10) 안쪽 입구에서부터는 이송빔(14)에 의해 옮겨지면서 가열과정을 거치는 것이다.In addition, a billing passage 13a and a billet feeder 13 of the billet passing frame 13 which is provided at the inlet of the rolling heating furnace 10 and is installed at the lower part of the front of the insulated cover 11. Since the heat accumulated in the thermal insulation cover 11 can be minutely discharged between 19a), the side surface and the upper surface of the billet feed roller table 16 installed in series with the billet preheating table 15 are preliminarily insulated in a triangular roof shape. The cover 12 was installed to perform the waste heat insulation function in the billet transfer roller table 16, and the billet supply door 20 was installed in the billet supply portion 17c at the front lower portion of the preliminary insulation cover 12 to provide the billet (b). When the feeder 18 is supplied along the feed roll 19 into the preliminary heat insulating cover 2 by the pusher 18, it is automatically closed by a switch operation to prevent heat loss as much as possible. The billet feeder 19a is transferred to the billet charging unit 17a by a feed roll 19. And, a heating furnace 10 from the inside of the inlet is subjected to the heating process As moved by the feed beam (14).

빌릿이송롤러테이블(16)의 빌릿공급부(17c)에서 빌릿예열테이블(15)을 지나 가열로(10)의 빌릿장입부(17a) 구간에는 빌릿이송대(19a)가 이송될 수 있는 이송롤(19)이 설치되어서 이송롤(19) 위를 빌릿이송대(19a)가 빌릿공급부(17c) 정면에서 일렬로 투입되는 것이다. 도 2는 가열로 정면의 이중 보온커버(Cover) 장치의 정면도를 나타낸것인데 빌릿공급도어(20)가 닫혀있는 상태를 도시하고 있다.The transfer roll to which the billet feeder 19a can be transferred from the billet feeder 17c of the billet feed roller table 16 to the billet loading part 17a of the heating furnace 10 after passing through the billet preheating table 15 ( 19) is installed so that the billet feeder 19a is fed in line in front of the billet feeder 17c on the feed roll 19. Figure 2 shows a front view of the double heat insulation cover (Cover) device in the front of the heating furnace showing a state in which the billet supply door 20 is closed.

<표 1>TABLE 1

열정산 측정결과Passionate Measurement Results 구분division 열량(103㎉/ton)Calories (103㎉ / ton) 비율ratio 공급열 Supply heat 연료연소열연소용공기현열 스케일생성열장입소재현열  Air combustion heat generation scale for fuel combustion heat combustion 214.745.179.3420.75 214.745.179.3420.75 63.213.292.7420.75 63.213.292.7420.75 소비열 Consumption 추출소재현열폐가스현열스케일현열냉각수현열방산열장입/추출손실열량스키드포스트손실열량Extraction Material Heat Treatment Gas Heat Scale Heat Sensing Cooling Water Heat Dissipation Heat Dissipation 19.8100.01.2925.06.0611.36.19 19.8100.01.2925.06.0611.36.19 56.029.40.387.351.83.321.8 56.029.40.387.351.83.321.8 연료원단위 합계Total fuel source unit 339.71339.71 100100

상기 표에 나타난 바와 같이 가열로에 투입된 열량의 약 47% 내지 52% 정도만 가열소재의 가열에 사용되고 나머지 열량은 배가스, 노본체의 방산, 노내부의 냉각수전열, 장입과 추출시의 손실열량 등으로 빠져나가게 되는 것을 알 수 있는데 가열로에서 빠져나가는 손실열량 중에서 가열소재(b)의 장입과 추출시 발생하는 손 실열량은 38%에 달하고 이 열량은 전열매체의 유무와 관계없이 이루어지는 복사열과 고온 배가스의 방출로 이어져 있음을 알 수 있는바, 즉 이 손실열량의 38% 정도는 장입시 발생하는 손실열량이고 다시 장입시의 손실발생열량의 86%가 고온 배가스의 방출에 의한 손실열량에 해당한다는 것을 알 수 있다.As shown in the above table, only about 47% to 52% of the heat input to the furnace is used for heating the heating material, and the remaining heat is exhaust gas, dissipation of the furnace body, heat of cooling water in the furnace, heat loss during charging and extraction, etc. It can be seen that out of the heat loss from the furnace, loss of heat generated by charging and extracting the heating material (b) reaches 38%, and this heat amount is radiant heat and high-temperature exhaust gas irrespective of the presence or absence of the heat transfer medium. It can be seen that it leads to the release of, that is, about 38% of the heat loss generated during charging and 86% of the heat generated during charging is equivalent to the heat loss due to the release of hot exhaust gas. Able to know.

본 발명은 표 1의 상기와 같은 배가스의 손실 발생량을 극소화하여 벙커-C유 절감에 의한 에너지비용을 줄여 기업의 생산이윤극대화를 위한 빌릿가열로(10)의 폐열을 이용한 예열장치인 보온커버(Cover)(11, 12)의 제공에 관한 발명이다.The present invention is a heat preservation apparatus using a waste heat of the billet heating furnace 10 for maximizing the production profit of the company by minimizing the loss of exhaust gas as shown in Table 1 to reduce the energy cost by reducing bunker-C oil ( The invention relates to the provision of the covers 11 and 12.

도 1은 가열로와 보온커버장치의 측단면도,1 is a side cross-sectional view of the heating furnace and the thermal cover device,

도 1-1는 빌릿통과틀과 빌릿장입부의 사시도,1-1 is a perspective view of a billet passing frame and billet charging unit,

도 2는 가열로와 2중 커버장치의 정면도이다.2 is a front view of the heating furnace and the double cover device.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

(10)--가열로 (11)--보온커버(10)-Heating Furnace (11)-Thermal Cover

(11a)---보온커버 상판 (11b)--보온커버 정면판(11a) --- thermal cover top plate (11b)-thermal cover front plate

(12)--예비 보온커버 (13)--빌릿통과틀(12)-Preliminary Insulating Cover (13)-Billlet Passing Frame

(13a)--빌릿통과구 (14)--이송빔(13a) --Billlet Pass (14)-Transfer Beam

(14a)--사절벽 (15)--빌릿예열테이블(14a)-Leftwall (15)-Billlet Preheating Table

(16)--빌릿이송롤러테이블 (17a)--빌릿장입부(16)-Billet feed roller table (17a)-Billt insert

(17b)--빌릿통과부 (17c)--빌릿공급부(17b)-Billet Pass Section (17c)-Billlet Supply Section

(18)--푸셔 (19)--이송롤(18)-Pusher (19)-Feeding Roll

(19a)--빌릿이송대 (20)--빌릿공급도어(19a)-Billet Conveyor (20)-Billlet Supply Door

(b)--빌릿(b)-Billette

Claims (1)

본 발명은 연주공정에서 생산된 반제품의 빌릿(b)을 압연공정에 투입하기 전에 압연 가열로(10)에서 가열공정을 거치는 단계에서 가열로(10) 내부의 가열열이 가열소재의 장입과정에서 발생하는 외부공기유입과 폐열방출로 인하여 손실이 발생하는것을 방지하기 위하여 가열로(10)의 정면부 빌릿장입부(17a)에서 빌릿공급부(17c)까지의 구간에서 빌릿예열테이블(15)을 덮는 보온커버(11)와 빌릿이송롤러테이블(16)을 덮는 예비 보온커버(12)가 있고 빌릿예열테이블(15)과 빌릿이송롤러테이블(16)의 빌릿공급부(17c)까지의 구간을 보온커버(11, 12)장치를 하여 폐열손실을 극소화하여 벙커-C유 절감에 의한 에너지비용을 줄여 생산이익 극대화를 기득시켜 주는 보온커버(11, 12)장치의 제공에 관한 발명.The present invention is the heating heat inside the heating furnace 10 in the charging process of the heating material in the step of undergoing the heating step in the rolling furnace 10 before the billet (b) of the semi-finished product produced in the playing process into the rolling process Covering the billet preheating table 15 in the section from the front billet charging portion 17a to the billet supplying portion 17c of the heating furnace 10 in order to prevent loss caused by external air inflow and waste heat discharge. There is a preliminary thermal insulation cover 12 covering the thermal insulation cover 11 and the billet conveying roller table 16, and the section between the billet preheating table 15 and the billet supplying portion 17c of the billet conveying roller table 16 is insulated. 11, 12) The invention relates to the provision of a thermal cover (11, 12) device to minimize the waste heat loss to reduce the energy cost of the bunker-C oil to maximize the production profit.
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KR101373164B1 (en) * 2012-08-24 2014-03-11 주식회사 포스코 Heating apparatus and heating method for slab
KR101435321B1 (en) * 2013-02-28 2014-08-27 현대제철 주식회사 Sintering machine
CN108687299A (en) * 2018-08-09 2018-10-23 德清县鑫宏锻造有限公司 Forge furnace

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JPS6068102A (en) * 1983-09-22 1985-04-18 Sumitomo Metal Ind Ltd Rolling method of thick plate
JPH05296663A (en) * 1992-03-31 1993-11-09 Matsushita Electric Ind Co Ltd Heating device
JP3165527B2 (en) * 1992-10-06 2001-05-14 株式会社タムラ製作所 Reflow soldering equipment
KR200169559Y1 (en) 1999-08-24 2000-02-15 포항종합제철주식회사 Device for protecting outdoor air in reheating furnace

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101373164B1 (en) * 2012-08-24 2014-03-11 주식회사 포스코 Heating apparatus and heating method for slab
KR101435321B1 (en) * 2013-02-28 2014-08-27 현대제철 주식회사 Sintering machine
CN108687299A (en) * 2018-08-09 2018-10-23 德清县鑫宏锻造有限公司 Forge furnace

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