KR100507382B1 - SCR Reactor for power plant 2 Cycle Engine - Google Patents
SCR Reactor for power plant 2 Cycle Engine Download PDFInfo
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- KR100507382B1 KR100507382B1 KR10-2000-0066030A KR20000066030A KR100507382B1 KR 100507382 B1 KR100507382 B1 KR 100507382B1 KR 20000066030 A KR20000066030 A KR 20000066030A KR 100507382 B1 KR100507382 B1 KR 100507382B1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
Abstract
본 발명은 내연 발전설비(2행정 엔진)용 SCR 반응탑으로 배기가스중의 질소산화물을 무해한 질소와 수증기로 환원시키는 SCR 반응탑에 관한 것으로서, 더욱 상세하게는 내연 발전설비(2행정 엔진) 후단에 SCR 반응탑을 설치하여 내연 발전설비의 출력저하와 별도의 열원 공급없이 배기가스중의 질소산화물을 무해한 질소와 수증기로 환원시킬 수 있는 반응탑에 관한 것이다.The present invention relates to an SCR reaction tower for reducing the nitrogen oxides in the exhaust gas into harmless nitrogen and water vapor as an SCR reaction tower for an internal combustion power generation facility (two-stroke engine), and more particularly, after the internal combustion power generation facility (two-stroke engine). The present invention relates to a reaction tower capable of reducing nitrogen oxides in exhaust gas to harmless nitrogen and water vapor without degrading the output of the internal combustion power plant and supplying a separate heat source.
본 발명은 수직 원통형 SCR 반응탑(10) 내부 상단에 다공판(24)을 설치하고 SCR 반응탑(10) 외측 상단에 SCR 입구덕트(12)를 연결 설치하며 SCR 반응탑(10) 하부에 SCR 출구덕트(14)를 연결 설치한다.The present invention is installed in the vertical cylindrical SCR reaction tower (10) upper perforated plate 24 and the SCR inlet duct (12) connected to the top of the outside of the SCR reaction tower 10 and installed in the SCR reaction tower (10) Connect the outlet duct (14).
상기, SCR 입구덕트(12)와 SCR 출구덕트(14) 사이에 바이패스(by-pass) 덕트(16)를 연결 설치하고 SCR 입구덕트(12) 상단에 SCR 입구댐퍼(18)를 설치하며 SCR 출구덕트(14) 상단에 SCR 출구댐퍼(20)를 설치하고 또한, 상기 바이패스 덕트(16) 상단에 바이패스 댐퍼(22)를 설치한 것이다.The by-pass duct 16 is installed between the SCR inlet duct 12 and the SCR outlet duct 14, and the SCR inlet damper 18 is installed on the top of the SCR inlet duct 12. The SCR outlet damper 20 is installed at the top of the outlet duct 14, and the bypass damper 22 is installed at the top of the bypass duct 16.
Description
본 발명은 내연 발전설비(2행정 엔진)용 SCR 반응탑으로 배기가스중의 질소산화물을 무해한 질소와 수증기로 환원시키는 SCR 반응탑에 관한 것으로서, 더욱 상세하게는 내연 발전설비(2행정 엔진) 후단에 SCR 반응탑을 설치하여 내연 발전설비의 출력저하와 별도의 열원 공급없이 배기가스중의 질소산화물을 무해한 질소와 수증기로 환원시킬 수 있는 반응탑에 관한 것이다.The present invention relates to an SCR reaction tower for reducing the nitrogen oxides in the exhaust gas into harmless nitrogen and water vapor as an SCR reaction tower for an internal combustion power generation facility (two-stroke engine), and more particularly, after the internal combustion power generation facility (two-stroke engine). The present invention relates to a reaction tower capable of reducing nitrogen oxides in exhaust gas to harmless nitrogen and water vapor without degrading the output of the internal combustion power plant and supplying a separate heat source.
일반적으로, 종래에는 도 1 에 도시한 바와 같이 SCR 반응탑(100) 하부에 가스/가스 열교환기(160)를 형성하고 가스/가스 열교환기(160) 일측부에 SCR 입구덕트(120)를 연결 설치하며 가스/가스 열교환기(160)와 연통되게 SCR 반응탑(100) 내부에 연소가스 재가열 버너(180)를 설치하고 SCR 반응탑(100) 하부에 SCR 출구덕트(140)를 연결 설치한 구성으로 되어진 것이다.In general, as shown in FIG. 1, a gas / gas heat exchanger 160 is formed below the SCR reaction tower 100 and an SCR inlet duct 120 is connected to one side of the gas / gas heat exchanger 160. To install the combustion gas reheat burner 180 inside the SCR reaction tower 100 in communication with the gas / gas heat exchanger 160 and the SCR outlet duct 140 connected to the lower installation of the SCR reaction tower 100 It is made.
상기의 구성에 의해 질소산화물이 포함된 배기가스(130 ?? 140℃)가 SCR 입구덕트(120)를 통하여 SCR 반응탑(100)에 설치된 가스/가스 열교환기(160)와 연소가스 재가열 버너(180)를 통과하면서 질소산화물과 환원제가 반응하여 질소산화물을 저감시키기 위한 최적 온도 조건인 320℃ ?? 450℃까지 상승한 후 SCR 반응탑(100)에 유입된다.By the above configuration, the exhaust gas containing nitrogen oxides (130 ° to 140 ° C.) is a gas / gas heat exchanger 160 and a combustion gas reheat burner installed in the SCR reaction tower 100 through the SCR inlet duct 120. As it passes through 180), the optimum temperature condition for reducing nitrogen oxide by reacting nitrogen oxide and reducing agent is 320 ℃ ?? After rising to 450 ℃ is introduced into the SCR reaction tower (100).
그리고, 상기 SCR 반응탑(100)에 유입된 배기가스중의 질소산화물은 촉매표면에서 환원제와 반응하여 무해한 질소와 수증기로 환원된 후 SCR 반응탑(100) 하부에 설치된 SCR 출구덕트(140)를 통해 외부로 배출된다.In addition, the nitrogen oxide in the exhaust gas introduced into the SCR reaction tower 100 is reduced to harmless nitrogen and water vapor by reacting with a reducing agent on the catalyst surface, and then the SCR outlet duct 140 installed under the SCR reaction tower 100. Through the outside.
상기와 같은 종래 기술로써 쓰레기 소각설비에 설치된 SCR 반응탑(100)은 배출되는 배기가스는 대기압 조건이므로 설치 및 운전상에는 제약이 없으나, 온도가 낮아서 SCR 반응탑(100) 전단에 가스/가스 열교환기(160)와 연소가스 재가열 버너(180)를 설치하여 배기가스 온도를 질소산화물과 환원제(요소 또는 암모니아)의 최적반응온도인 320℃ ?? 450℃까지 상승시켜야 하므로 많은 에너지 소요비용이 발생한 문제점이 있었으며, 국내에서는 내연 발전설비에 SCR 반응탑을 설치한 예가 없다.SCR reaction tower 100 installed in the waste incineration facility by the prior art as described above has no restriction in the installation and operation because the exhaust gas is atmospheric pressure conditions, but the gas / gas heat exchanger in front of the SCR reaction tower 100 due to the low temperature And a combustion gas reheat burner 180, the exhaust gas temperature is 320 ° C. which is an optimum reaction temperature of nitrogen oxide and a reducing agent (urea or ammonia). Since it has to rise to 450 ℃ there was a problem that a lot of energy costs occurred, there is no example in Korea installed SCR reaction tower in the internal combustion power plant.
본 발명은 상기한 문제점을 해결하기 위하여 안출한 것으로서, 그 목적은 내연 발전설비(2행정 엔진)는 그 특성상 고온, 고압의 배기가스를 배출하므로 SCR 반응탑을 내연 발전설비 후단에 설치하므로써 배출되는 배기가스가 고온이므로 별도의 온도 상승장치(가스/가스 열교환기, 연소가스 재가열 버너 등)와 에너지(LNG, LPG) 소비없이 SCR 반응탑 운전이 가능하고 배출되는 배기가스가 고압이므로 동일한 양의 배기가스를 대기압 조건에서 처리하는 경우보다 SCR 반응탑 크기를 줄일 수 있는 내연 발전설비(2행정 엔진)용 SCR 반응탑을 제공하는 것이다.The present invention has been made to solve the above problems, the purpose is that the internal combustion power plant (two-stroke engine) is discharged by installing the SCR reaction tower in the rear end of the internal combustion power plant because the exhaust gas of high temperature, high pressure due to its characteristics. Since the exhaust gas is high temperature, it is possible to operate the SCR reactor without separate temperature riser (gas / gas heat exchanger, combustion gas reheat burner, etc.) and energy (LNG, LPG) consumption. It is to provide an SCR reaction tower for an internal combustion power plant (two-stroke engine) that can reduce the size of the SCR reaction tower than when the gas is treated under atmospheric conditions.
본 발명은 상기한 목적을 달성하기 위하여 내연 발전설비 후단에 SCR 반응탑을 설치하기 위해서는 내연 발전설비 초기 운전시 미연분에 의한 촉매 오염방지와 고압의 배기가스가 배출되기 때문에 SCR 반응탑은 압력용기로 설계되어야 하며 SCR 반응탑이 엔진과 과급기 사이에 설치되므로 배기가스 압력 손실에 의한 엔진의 출력 저하가 방지되어야 한다. 고온의 배기가스를 배출하는 내연 발전설비 후단에 SCR 반응탑을 설치하므로 종래의 SCR 반응탑 내부에 설치된 가스/가스 열교환기와 연소가스 재가열 버너를 제거한 상태에서 SCR 반응탑의 입구덕트와 출구덕트 사이에 바이패스 덕트를 설치하고 상기의 입구덕트와 출구덕트에 각각 SCR 입구댐퍼와 SCR 출구댐퍼 및 바이패스 댐퍼를 설치한 SCR 반응탑을 제공함에 의해 달성된다. The present invention is to provide a SCR reaction tower at the rear end of the internal combustion power plant in order to achieve the above object, the SCR reaction tower is a pressure vessel because it prevents catalyst contamination by the unburnt and exhaust gas of high pressure during the initial operation of the internal combustion power plant Since the SCR reaction tower is installed between the engine and the supercharger, the reduction of the engine output due to the exhaust gas pressure loss should be prevented. Since the SCR reaction tower is installed at the rear of the internal combustion power plant that discharges high-temperature exhaust gas, the gas / gas heat exchanger installed inside the conventional SCR reaction tower and the combustion gas reheat burner are removed between the inlet duct and the outlet duct of the SCR reaction tower. This is accomplished by providing a bypass duct and providing an SCR inlet and an outlet duct with SCR inlet dampers, SCR outlet dampers and bypass dampers, respectively.
이하, 첨부된 도면을 참조하여 본 발명의 구성 및 작용을 설명하면 다음과 같다.Hereinafter, the configuration and operation of the present invention with reference to the accompanying drawings.
도 2 는 본 발명의 내연 발전설비용 SCR 반응탑을 나타낸 개략도를 도시한 것으로서, 내연 발전설비 후단(엔진 배기통과 과급기 사이)에 설치되는 SCR 반응탑(10)에 있어서, 수직 원통형 SCR 반응탑(10) 내부 상단에 다공판(24)을 설치하고 SCR 반응탑(10) 외측 상단에 SCR 입구덕트(12)를 연결 설치하며 SCR 반응탑(10) 하부에 SCR 출구덕트(14)를 연결 설치한다.FIG. 2 is a schematic view showing an SCR reaction tower for an internal combustion power plant according to the present invention. In the SCR reaction tower 10 installed at a rear end of an internal combustion power generation facility (between an engine exhaust pipe and a supercharger), a vertical cylindrical SCR reaction tower ( 10) Install the perforated plate 24 on the inner top, and install the SCR inlet duct 12 connected to the upper top of the SCR reaction tower 10, and install the SCR outlet duct 14 connected to the bottom of the SCR reaction tower 10. .
상기, SCR 입구덕트(12)와 SCR 출구덕트(14) 사이에 바이패스(by-pass) 덕트(16)를 연결 설치하고 SCR 입구덕트(12) 상단에 SCR 입구댐퍼(18)를 설치하며 SCR 출구덕트(14) 상단에 SCR 출구댐퍼(20)를 설치하고 또한, 상기 바이패스 덕트(16) 상단에 바이패스 댐퍼(22)를 설치한 구성으로 되어진 것이다.The by-pass duct 16 is installed between the SCR inlet duct 12 and the SCR outlet duct 14, and the SCR inlet damper 18 is installed on the top of the SCR inlet duct 12. The SCR outlet damper 20 is installed at the upper end of the outlet duct 14 and the bypass damper 22 is installed at the upper end of the bypass duct 16.
상기와 같은 구성을 참조하여 본 발명의 작용을 설명하겠다.The operation of the present invention will be described with reference to the above configuration.
본 발명의 기본적인 SCR 반응탑의 원리는 종래와 유사하지만 고온, 고압의 배기가스를 배출하는 내연 발전설비(2행정 엔진) 후단에 SCR 반응탑(10)을 설치하므로 종래의 가스/가스 열교환기와 연소가스 재가열 버너는 불필요하며, SCR 반응탑(10)의 입구덕트(12)와 출구덕트(14) 사이에 바이패스 덕트(16)를 설치하고 SCR 입구덕트(12)와 SCR 출구덕트(14) 및 바이패스 덕트(16)에 각각 SCR 입구댐퍼(18)와 SCR 출구댐퍼(20) 및 바이패스(by-pass) 댐퍼(22)를 설치하였으며 상기, SCR 입구댐퍼(18)와 SCR 출구댐퍼(20) 및 바이패스 댐퍼(22)는 내연 발전설비(2행정 엔진) 초기 운전시 발생하는 미연분이 SCR 반응탑(10) 내부로 유입되지 못하도록 내연 발전설비 운전 초기에는 SCR 입구댐퍼(18)와 SCR 출구댐퍼(20)를 닫고 바이패스 댐퍼(22)만을 열어서 운전하여 촉매가 미연분에 의해 오염되는 것을 방지하고 내연 발전설비가 정상적으로 운전되면 반대로 SCR 입구댐퍼(18)와 SCR 출구댐퍼(20)를 열고 바이패스 댐퍼(22)를 닫아 배기가스가 정상적으로 SCR 반응탑(10)에 유입되도록 한다.The principle of the basic SCR reaction tower of the present invention is similar to the conventional one, but since the SCR reaction tower 10 is installed at the rear of an internal combustion power generation facility (two-stroke engine) that discharges high-temperature, high-pressure exhaust gas, the conventional gas / gas heat exchanger and combustion The gas reheat burner is unnecessary and a bypass duct 16 is installed between the inlet duct 12 and the outlet duct 14 of the SCR reaction tower 10 and the SCR inlet duct 12 and the SCR outlet duct 14 and SCR inlet dampers 18, SCR outlet dampers 20, and bypass dampers 22 are installed in the bypass ducts 16, respectively, and the SCR inlet dampers 18 and SCR outlet dampers 20 are respectively provided. ) And the bypass damper 22 is a SCR inlet damper 18 and the SCR outlet at the beginning of the operation of the internal combustion power generation facility so that unburned dust generated during the initial operation of the internal combustion power generation facility (two stroke engine) does not flow into the SCR reaction tower 10. The damper 20 is closed and only the bypass damper 22 is opened to operate so that the catalyst is contaminated by That is to be prevented, and when the internal combustion power plant is operating normally opposed to flowing into the SCR inlet damper 18 and the SCR outlet damper 20 to open the SCR reaction is normally closing the exhaust gas bypass damper (22) container (10).
또한, 상기 SCR 반응탑(10)은 고압의 배기가스에 구조적으로 안정되도록 수직 원통형 압력용기로 설치하였으며 SCR 반응탑(10) 내부 상단에는 다공판(24)을 설치하여 배기가스가 SCR 반응탑(10) 전체에 균일하게 유입되도록 함으로써 압력손실을 최소화하여 내연 발전설비의 출력이 저하되지 않도록 하였다.In addition, the SCR reaction tower 10 was installed as a vertical cylindrical pressure vessel to structurally stabilize the high-pressure exhaust gas and the porous plate 24 is installed on the upper end of the SCR reaction tower 10 to exhaust gas is SCR reaction tower ( 10) Minimize the pressure loss by allowing the entire inflow uniformly so that the output of the internal combustion power plant is not lowered.
본 발명은 상술한 특정의 바람직한 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위 내에 있게 된다.The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.
이상과 같이 본 발명에 의한 내연 발전설비용 SCR 반응탑은 고온, 고압의 배기가스를 배출하는 내연 발전설비 후단에 SCR 반응탑을 설치함으로써 별도의 배기가스 온도 승온장치와 에너지 소비없이 내연 발전설비에서 발생되는 질소산화물의 공해를 저감시킬 수 있으며 설비의 운전 비용을 절감할 수 있도록 한 매우 유용한 발명인 것이다. As described above, the SCR reaction tower for an internal combustion power generation system according to the present invention is installed in an internal combustion power generation facility without a separate exhaust gas temperature raising device and energy consumption by installing an SCR reaction tower at the rear end of the internal combustion power generation facility for discharging high-temperature and high-pressure exhaust gas. It is a very useful invention that can reduce the pollution of the generated nitrogen oxides and to reduce the operating cost of the equipment.
도 1 은 종래의 SCR 반응탑을 나타낸 개략도1 is a schematic view showing a conventional SCR reaction tower
도 2 는 본 발명의 내연 발전설비용 SCR 반응탑을 나타낸 개략도Figure 2 is a schematic diagram showing an SCR reaction tower for an internal combustion power plant of the present invention
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
(10) : SCR 반응탑(10): SCR reaction tower
(12) : SCR 입구덕트(12): SCR Inlet Duct
(14) : SCR 출구덕트(14): SCR outlet duct
(16) : 바이패스 덕트16: bypass duct
(18) : SCR 입구댐퍼(18): SCR Inlet Damper
(20) : SCR 출구댐퍼20: SCR outlet damper
(22) : 바이패스 댐퍼22: bypass damper
(24) : 다공판24: perforated plate
Claims (1)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2000-0066030A KR100507382B1 (en) | 2000-11-08 | 2000-11-08 | SCR Reactor for power plant 2 Cycle Engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2000-0066030A KR100507382B1 (en) | 2000-11-08 | 2000-11-08 | SCR Reactor for power plant 2 Cycle Engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20020035716A KR20020035716A (en) | 2002-05-15 |
| KR100507382B1 true KR100507382B1 (en) | 2005-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100958345B1 (en) * | 2009-10-29 | 2010-05-17 | 광성(주) | Scr system |
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| US5413699A (en) * | 1993-10-14 | 1995-05-09 | Mobil Oil Corporation | FCC process with fines tolerant SCR reactor |
| US5603909A (en) * | 1995-08-03 | 1997-02-18 | The Babcock & Wilcox Company | Selective catalytic reduction reactor integrated with condensing heat exchanger for multiple pollutant capture/removal |
| KR19980021667A (en) * | 1996-09-18 | 1998-06-25 | 김정국 | Ammonia Gas Mixing Equipment in Selective Catalytic Reaction Tower (SCR) for Waste Incinerator |
| US5943865A (en) * | 1998-12-03 | 1999-08-31 | Cohen; Mitchell B. | Reheating flue gas for selective catalytic systems |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353207A (en) * | 1980-08-20 | 1982-10-12 | Westinghouse Electric Corp. | Apparatus for removing NOx and for providing better plant efficiency in simple cycle combustion turbine plants |
| JPH01119329A (en) * | 1987-11-02 | 1989-05-11 | Ishikawajima Harima Heavy Ind Co Ltd | Denitration of exhaust gas from diesel engine |
| US5413699A (en) * | 1993-10-14 | 1995-05-09 | Mobil Oil Corporation | FCC process with fines tolerant SCR reactor |
| US5603909A (en) * | 1995-08-03 | 1997-02-18 | The Babcock & Wilcox Company | Selective catalytic reduction reactor integrated with condensing heat exchanger for multiple pollutant capture/removal |
| KR19980021667A (en) * | 1996-09-18 | 1998-06-25 | 김정국 | Ammonia Gas Mixing Equipment in Selective Catalytic Reaction Tower (SCR) for Waste Incinerator |
| US5943865A (en) * | 1998-12-03 | 1999-08-31 | Cohen; Mitchell B. | Reheating flue gas for selective catalytic systems |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100958345B1 (en) * | 2009-10-29 | 2010-05-17 | 광성(주) | Scr system |
| WO2011052823A1 (en) * | 2009-10-29 | 2011-05-05 | 광성(주) | Scr system |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20020035716A (en) | 2002-05-15 |
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