KR100900401B1 - Waste heat power generation system - Google Patents

Waste heat power generation system Download PDF

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KR100900401B1
KR100900401B1 KR1020020083454A KR20020083454A KR100900401B1 KR 100900401 B1 KR100900401 B1 KR 100900401B1 KR 1020020083454 A KR1020020083454 A KR 1020020083454A KR 20020083454 A KR20020083454 A KR 20020083454A KR 100900401 B1 KR100900401 B1 KR 100900401B1
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South Korea
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heat
air
exhaust gas
power generation
generation system
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KR1020020083454A
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Korean (ko)
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KR20040056869A (en
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박흥수
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재단법인 포항산업과학연구원
주식회사 포스코
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00—Other machines or engines
    • F03B17/06—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • 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
    • Y02E10/20—Hydro energy

Abstract

본 발명은 배기가스의 배열을 이용하여 전력을 발생시키는 시스템에 관한 것으로서, 더욱 상세하게는 중저온의 연도 배기가스 보유열을 열원으로 하여 공기를 가열시킨 뒤 가열된 공기를 상승관에 상향분사하여 상승관내의 물 또는 열매체유의 순환구동력을 발생시키고 그 순환계통에 수력터빈을 설치하여 전력을 발생시키는 배열 발전시스템에 관한 것이다.The present invention relates to a system for generating electric power by using an arrangement of exhaust gas, and more particularly, by heating air with a low-temperature flue gas holding heat as a heat source, and then spraying the heated air upwardly on a rising pipe. The present invention relates to a heat generating power generation system that generates a circulating driving force of water or thermal oil in a rising pipe and installs a hydraulic turbine in the circulation system.

배기가스, 축열체, 열매체유, 배열, 발전, 수력터빈, 전력, 상승관, 강수관Exhaust gas, heat storage medium, thermal oil, heat generation, power generation, hydro turbine, electric power, riser, precipitation pipe

Description

배열 발전시스템{Waste heat power generation system}Waste heat power generation system

도 1은 본 발명에 따른 배열 발전시스템의 구성도이다.1 is a configuration diagram of an array power generation system according to the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

1 : 송풍기 2 : 연결호퍼1: blower 2: connection hopper

3 : 회전 축열체 4 : 공기관3: rotating heat storage body 4: air pipe

5 : 공기 분사노즐 6 : 상승관5: Air injection nozzle 6: Rising pipe

7 : 강수관 8 : 수력터빈7: Precipitation Pipe 8: Hydro Turbine

9 : 발전기 10 : 연돌9: generator 10: stack

10a : 연도 11 : 공기10a: year 11: air

12 : 가열공기 13 : 상승 수류12 heating air 13 rising water flow

14 : 하강 수류 15 : 배기가스14: down stream 15: exhaust gas

16 : 저온 배기가스 17 : 배출 공기16: low temperature exhaust gas 17: exhaust air

본 발명은 배기가스의 배열을 이용하여 전력을 발생시키는 시스템에 관한 것으로서, 더욱 상세하게는 중저온의 연도 배기가스 보유열을 열원으로 하여 공기를 가열시킨 뒤 가열된 공기를 상승관에 상향분사하여 상승관내의 물 또는 열매체유의 순환구동력을 발생시키고 그 순환계통에 수력터빈을 설치하여 전력을 발생시키는 배열 발전시스템에 관한 것이다.The present invention relates to a system for generating electric power by using an arrangement of exhaust gas, and more particularly, by heating air with a low-temperature flue gas holding heat as a heat source, and then spraying the heated air upwardly on a rising pipe. The present invention relates to a heat generating power generation system that generates a circulating driving force of water or thermal oil in a rising pipe and installs a hydraulic turbine in the circulation system.

일반적으로, 거의 모든 산업제품은 제작 또는 처리과정에서 가열공정을 거치게 되는데, 가열공정에 투입된 열에너지의 일부는 가열에너지로 유효하게 사용되지 못하고 배열의 형태로 배출되며, 가열공정의 열효율은 통상적으로 50~60% 수준에 불과하여 유효하게 이용되지 못하는 배열의 양은 상당한 수준에 이른다. 이 때문에 산업분야에서는 제품의 생산원가를 저감하여 경쟁력을 높이고 환경문제의 경감을 위해 배열을 회수하여 재이용하는 것을 대단히 중요하게 인식하고 있다.In general, almost all industrial products undergo a heating process in the manufacturing or processing process. Some of the heat energy put into the heating process is not effectively used as heating energy and is discharged in the form of an array. At only ~ 60%, there is a significant amount of unavailable arrangements. For this reason, it is very important for the industrial sector to reduce the production cost of the product to increase the competitiveness and to recover and reuse the array in order to alleviate environmental problems.

가열공정에 있어서 배열은 제품의 현열, 냉각수 열, 노체의 방산열 그리고 배기가스 보유열 등으로 세분되는데, 이 중에서 배기가스가 보유하는 열량이 배열의 대부분을 차지하고 있다. In the heating process, the arrangement is subdivided into the sensible heat of the product, the heat of cooling water, the heat of dissipation of the furnace, and the heat of exhaust gas, among which the heat of the exhaust gas occupies most of the heat.

배기가스의 보유열을 재이용하는 방법으로는 연소용 공기의 예열과 공정에 필요한 증기의 생산을 들 수 있으며, 현재 대부분의 가열공정에서는 이와 같은 배열회수장치를 적용하고 있는 실정이다. The method of reusing the heat of exhaust gas may include preheating combustion air and producing steam required for the process, and at present, most heating processes use the heat recovery device.

본 발명은 상기와 같은 제반 사항을 감안하여 창안된 것으로서, 배기가스 보유열을 적극적으로 재이용하고자 이를 전력으로 전환할 수 있는 발전시스템을 제공하는데 그 목적이 있다.The present invention was devised in view of the above-mentioned matters, and an object thereof is to provide a power generation system capable of converting the exhaust gas holding heat into electric power for active reuse.

그리고, 설치와 작동이 간단하고, 산업체의 에너지 비용 저감과 환경 오염물 질의 배출을 경감할 수 있는 배열 발전시스템을 제공하는데 목적이 있다.It is also an object of the present invention to provide an array power generation system that is simple to install and operate and that can reduce the energy cost of the industry and reduce the emission of environmental pollutants.

상기와 같은 목적을 달성하기 위한 본 발명의 배열 발전시스템은, 배출되는 배기가스(15)의 연도(10a)에 회전하는 축열체(3)를 설치하고 상기 연도(10a)의 외부에 노출된 상기 축열체(3) 부분의 양단면에 공기 연결 호퍼(2)를 설치하여 송풍기(1)로부터 공급되는 공기(11)가 통과되도록 하여, 상기 축열체(3)에 의해 상기 배기가스(15)의 열이 전열되어 상기 공기(11)가 가열되도록 한 후, 가열공기(12)를 물 또는 열매체유가 충전되어 있는 수직 상승관(6)의 하부에서 공기 분사노즐(5)을 통해 상향 분사되도록 하여 상기 물 또는 열매체유의 상승수류(13)의 순환력을 유발시켜 그 순환통로인 강수관(7)에 수력터빈(8)과 상기 수력터빈(8)의 출력축에 발전기(9)를 연결하여 전력을 발생시키는 것을 특징으로 한다.The heat generating system of the present invention for achieving the above object, the heat accumulator (3) is installed in the flue (10a) of the exhaust gas (15) discharged and the exposed to the outside of the flue (10a) Air connection hoppers 2 are provided at both end surfaces of the heat storage body 3 to allow air 11 supplied from the blower 1 to pass therethrough, so that the exhaust gas 15 is discharged by the heat storage body 3. After the heat is transferred to allow the air 11 to be heated, the heated air 12 is sprayed upward through the air injection nozzle 5 at the lower portion of the vertical riser 6 filled with water or the heat medium oil. Induces the circulating force of the ascending current 13 of the water or the heat medium oil to generate electric power by connecting the hydraulic turbine 8 and the generator 9 to the output shaft of the hydraulic turbine 8 to the precipitation pipe (7) that is the circulation passage It is characterized by.

이하, 첨부된 도면을 참조로 본 발명을 상세히 설명하기로 한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 배열을 이용한 발전시스템의 구성도이다.1 is a configuration diagram of a power generation system using an arrangement according to the present invention.

통상 배기가스(15)는 200~300℃ 정도의 온도로 연돌(10)을 통해 방출되는데, 이러한 배기가스(15)가 통과하는 연도(10a)에 얇은 금속판을 적층하거나 하니컴(honeycomb) 형태의 세라믹으로 제작되는 원통형의 회전 축열체(3)를 설치하고, 연도(10a)의 외부에 노출되는 회전축열체(3) 부분의 양단면에 공기 연결 호퍼(2)를 설치하여 송풍기(1)로부터 공급되는 공기(11)가 통과되도록 구성한다.In general, the exhaust gas 15 is discharged through the stack 10 at a temperature of about 200 to 300 ° C., and a thin metal plate or a honeycomb type ceramic is laminated on the flue 10a through which the exhaust gas 15 passes. The cylindrical rotary heat accumulator (3) is manufactured by the air conditioner, and the air connection hoppers (2) are provided at both end surfaces of the rotary heat accumulator (3) portion exposed to the outside of the flue (10a), and are supplied from the blower (1). The air 11 is configured to pass.

여기서, 회전 축열체(3)는 단위 부피당 전열 면적이 넓기 때문에 작은 부피로도 큰 열전달 효과를 얻을 수 있다. Here, since the heat storage area per unit volume has a large heat transfer area, a large heat transfer effect can be obtained even with a small volume.                     

따라서, 회전 축열체(3)가 회전운동을 하게 되면 배기가스(15)의 열에 의하여 회전 축열체(3)에 축열이 이루어지며, 축열된 부분이 회전하여 공기 연결 호퍼(2)측으로 이동하였을 때 공기(11)에 열이 전달되는 열재생작용이 이루어지게 된다.Therefore, when the rotary heat accumulator 3 rotates, heat is generated in the rotary heat accumulator 3 by the heat of the exhaust gas 15, and when the heat accumulator is rotated and moved to the air connection hopper 2 side. Heat regeneration is performed to transfer heat to the air (11).

이와 같이 함으로써 배기가스(15)의 보유열을 효과적으로 저압 공기(11)로 전달할 수 있으며, 이로써 회전 축열체(3)를 통과하고 난 배기가스(16)는 온도가 50℃ 이상 저하된 상태로 배출되게 된다.In this way, the heat of retention of the exhaust gas 15 can be effectively transmitted to the low pressure air 11, whereby the exhaust gas 16 passing through the rotary heat storage body 3 is discharged in a state where the temperature is lowered by 50 ° C or more. Will be.

한편, 회전 축열체(3)에 의하여 공기(11)의 온도는 상승하게 되며 이에 따른 부피팽창에 의하여 체적유량이 증대되어지며, 가열된 공기(12)는 상승관(6) 하부에 설치된 공기 분사노즐(5)에서 물 또는 열매체유에 상향 분사되며, 상승관(6) 내부의 물 또는 열매체유는 분사된 공기(12)에 의하여 형성되는 기포의 부력과 분사 압력 자체에 의하여 상승관(6) 내부에서 상승하게 된다.On the other hand, the temperature of the air 11 is increased by the rotary heat accumulator 3 and the volume flow rate is increased by the volume expansion, and the heated air 12 is sprayed with air installed under the rising pipe 6. The nozzle 5 is sprayed upward into the water or the heat medium oil, and the water or the heat medium oil inside the riser 6 is caused by the buoyancy of the bubbles formed by the injected air 12 and the injection pressure itself. Will rise from.

이러한 작동은 기포펌프의 작동원리와 유사하며, 결과적으로 공기(12)의 압력에너지는 상승 수류(13)의 운동에너지로 전환되어지며, 상승관(6)을 통과하면서 에너지의 전달이 이루어진 공기(12)는 다시 저온, 저압 상태로 되어 상승관(6) 상부에서 대기로 방출되어진다.This operation is similar to the operation principle of the bubble pump, and as a result, the pressure energy of the air 12 is converted into the kinetic energy of the ascending water stream 13, and the air through which the energy is transferred through the ascending pipe 6 12 is again in a low temperature, low pressure state is discharged to the atmosphere from the top of the riser (6).

이와 같이, 상승관(6) 내부에서 상승하는 수류(13)가 형성되고 내부에 기포가 존재하면, 상승관(6)과 강수관(7)간에는 수두차가 발생하게 되어 강수관(7) 내부에서는 하향하는 하강 수류(14)가 발생하게 되는데, 수력발전에서와 마찬가지로 강수관(7)의 중간에 수력터빈(8)을 설치함으로써 하강 수류(14)의 운동에너지를 일 에너지로 변환시킬 수 있게 된다.As such, when the water flow 13 rising inside the rising pipe 6 is formed and bubbles exist therein, water head difference is generated between the rising pipe 6 and the precipitation pipe 7, The downward flowing water 14 is generated, and as in hydroelectric power generation, by installing the hydraulic turbine 8 in the middle of the precipitation pipe 7, the kinetic energy of the falling water flow 14 can be converted into work energy. .

그리고, 터빈(8)의 출력축에 발전기(9)를 연결하여 전력을 발생시킬 수 있게 되는 것이다.Then, the generator 9 is connected to the output shaft of the turbine 8 to generate electric power.

여기서, 수력터빈(8)의 경우 수두차가 2~3m 수준이 되면 전력을 발생시킬 수 있으므로 상승관(6)과 강수관(7)의 높이를 최소한 2m 이상으로 할 경우 전력의 발생이 가능하다.Here, in the case of the hydraulic turbine 8 can generate power when the head difference is 2 to 3m level, the power can be generated when the height of the riser 6 and the downcomer 7 is at least 2m.

이와 같은 본 발명에 의하면, 송풍기(1)로부터 공급되는 공기(11)를 배기가스(15)의 열을 이용하여 가열한 다음 직접적으로 공기터빈을 회전시키는 일반적인 방법에 비하여 설비투자비를 줄일 수 있을 뿐만 아니라 유지 관리가 대단히 간편해지는 유리한 장점이 있다.According to the present invention, it is possible to reduce the equipment investment cost compared to the general method of heating the air 11 supplied from the blower 1 by using the heat of the exhaust gas 15 and then directly rotating the air turbine. But there is an advantage that the maintenance is very easy.

즉, 공기터빈은 그 자체가 고가일 뿐만 아니라 윤활장치와 조속장치 그리고 제어장치 등과 같은 주변장치가 필요하며, 그에 따른 유지 관리가 요구되는 단점이 있는 반면, 본 발명에서는 단순한 구조의 상승관과 하강관 그리고 기상용화된 수력터빈만으로 배열 발전시스템을 구성할 수 있는 것이다.That is, the air turbine itself is expensive and requires peripheral devices such as a lubrication device, a governor, and a control device, and there is a disadvantage in that maintenance is required. It is possible to construct an array power generation system with only steel pipes and weathered hydraulic turbines.

본 발명에 따르면, 배기가스 배열의 이용처가 확장되어 확보되고, 환경 오염물질의 배출을 경감할 수 있으며, 산업체의 에너지 비용 저감에 따른 생산원가의 저감을 통해 경쟁력을 확보할 수 있는 효과가 있다.According to the present invention, the use of the exhaust gas array can be expanded and secured, the emission of environmental pollutants can be reduced, and the competitiveness can be secured by reducing the production cost according to the reduction of the energy cost of the industry.

Claims (1)

배출되는 배기가스(15)의 연도(10a)에 회전하는 축열체(3)를 설치하고 상기 연도(10a)의 외부에 노출된 상기 축열체(3) 부분의 양단면에 공기 연결 호퍼(2)를 설치하여 송풍기(1)로부터 공급되는 공기(11)가 통과되도록 하여, 상기 축열체(3)에 의해 상기 배기가스(15)의 열이 전열되어 상기 공기(11)가 가열되도록 한 후, 가열공기(12)를 물 또는 열매체유가 충전되어 있는 수직 상승관(6)의 하부에서 공기 분사노즐(5)을 통해 상향 분사되도록 하여 상기 물 또는 열매체유의 상승수류(13)의 순환력을 유발시켜 그 순환통로인 강수관(7)에 수력터빈(8)과 상기 수력터빈(8)의 출력축에 발전기(9)를 연결하여 전력을 발생시키는 것을 특징으로 하는 배열 발전시스템.An air connection hopper (2) is installed on both end surfaces of the heat storage body (3) which is installed in the heat storage body (3) rotating in the flue (10a) of the exhaust gas (15) discharged and exposed to the outside of the flue (10a). Installed to allow the air 11 supplied from the blower 1 to pass therethrough, the heat of the exhaust gas 15 is transferred by the heat accumulator 3 so that the air 11 is heated, and then heated. Air 12 is injected upward through the air injection nozzle 5 at the lower portion of the vertical riser 6 filled with water or heat medium oil to induce a circulation force of the rising water flow 13 of the water or heat medium oil. An arrayed power generation system, characterized in that for generating electric power by connecting a generator (9) to the output shaft of the hydraulic turbine (8) and the hydraulic turbine (8) in the circulating passage.
KR1020020083454A 2002-12-24 2002-12-24 Waste heat power generation system KR100900401B1 (en)

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KR100753333B1 (en) * 2006-10-23 2007-08-29 주식회사 포스코 Power generation system using waste heat
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Citations (3)

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Publication number Priority date Publication date Assignee Title
US5685147A (en) 1995-06-12 1997-11-11 Brassea; Angel Buoyancy and thermal differentials energy generator
KR20010023228A (en) * 1998-06-24 2001-03-26 엔. 브이. 케마 Device for compressing a gaseous medium and systems comprising such device
JP2002235653A (en) 2000-12-04 2002-08-23 Shoji Tanaka Water force power generating device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5685147A (en) 1995-06-12 1997-11-11 Brassea; Angel Buoyancy and thermal differentials energy generator
KR20010023228A (en) * 1998-06-24 2001-03-26 엔. 브이. 케마 Device for compressing a gaseous medium and systems comprising such device
JP2002235653A (en) 2000-12-04 2002-08-23 Shoji Tanaka Water force power generating device

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