KR0116821Y1 - Fire prevention system of powdered coal manufacture plant - Google Patents
Fire prevention system of powdered coal manufacture plant Download PDFInfo
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- KR0116821Y1 KR0116821Y1 KR2019950009299U KR19950009299U KR0116821Y1 KR 0116821 Y1 KR0116821 Y1 KR 0116821Y1 KR 2019950009299 U KR2019950009299 U KR 2019950009299U KR 19950009299 U KR19950009299 U KR 19950009299U KR 0116821 Y1 KR0116821 Y1 KR 0116821Y1
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- pulverized coal
- automatic valve
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B39/00—Cooling or quenching coke
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
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- Oil, Petroleum & Natural Gas (AREA)
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- Organic Chemistry (AREA)
- Disintegrating Or Milling (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
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Abstract
본 고안은, 스팀(Steam)과 질소(N2) 가스를 이용하여 화재를 효과적으로 예방할 수 있는 미분탄 제조설비의 화재예방 시스템에 관한 것이다. 본 고안은 괴상의 석탄을 미분으로 분쇄하는 밀 출구의 온도검출용 온도계와, 상기 밀내부와 스팀본관을 연결하고, 중간부에는 자동밸브를 갖는 스팀공급관 및, 상기 온도계와 스팀 공급관의 자동밸브를 연결하고, 상기 온도계의 검출온도가 일정온도 이상이면 상기 자동밸브를 개방시켜 밀내부로 스팀을 공급함으로서 내부온도를 냉각시키는 제1제어부를 갖는 스팀공급 장치;와, 미분탄을 포집하는 백필터 내부의 산소 농도를 검출하는 산소농도 측정기와, 상기 백필터 내부와 질소가스 본관을 연결하고, 중간부에는 각각 자동밸브를 갖는 질소가스 공급관 및, 상기 산소농도 측정기의 검출농도가 일정값 이상이면 상기 자동밸브를 각각 개방시켜 백필터 내부로 질소가스를 공급함으로서 산소농도를 저하시키는 제2제어부를 갖는 질소가스 공급장치;를 포함함을 특징으로 하는 미분탄 제조설비의 화재예방 시스템을 제공한다.The present invention relates to a fire prevention system of pulverized coal production equipment which can effectively prevent fire by using steam and nitrogen (N 2 ) gas. The present invention provides a temperature detecting thermometer at a mill outlet for grinding pulverized coal into fine powder, a steam supply pipe connecting the inside of the mill and the steam main pipe, and having an automatic valve in the middle, and an automatic valve of the thermometer and the steam supply pipe. A steam supply device having a first control unit configured to cool the internal temperature by supplying steam to the mill by opening the automatic valve when the temperature detected by the thermometer is equal to or higher than a predetermined temperature; and inside the bag filter for collecting pulverized coal. An oxygen concentration detector for detecting an oxygen concentration, a nitrogen gas supply pipe connecting the inside of the bag filter to a nitrogen gas main pipe, each having an automatic valve at an intermediate portion thereof, and the automatic valve if the detected concentration of the oxygen concentration meter is equal to or higher than a predetermined value. Nitrogen gas supply apparatus having a second control unit for reducing the oxygen concentration by opening the respective to supply nitrogen gas into the bag filter; Provides a pulverized coal fire protection systems of the production plant, it characterized in that it comprises.
Description
제1도는 일반적인 미분탄 제조설비의 구성도.1 is a block diagram of a general pulverized coal manufacturing equipment.
제2도는 본 고안에 따른 화재예방 시스템이 갖춰진 미분탄 설비의 구성도.2 is a block diagram of a pulverized coal facility equipped with a fire prevention system according to the present invention.
제3도는 본 고안에 따른 화재예방 시스템의 회로 구성도이다.3 is a circuit diagram of a fire prevention system according to the present invention.
＊ 도면의 주요부분에 대한 부호의 설명＊ Explanation of symbols on main parts of drawing
10 : 스팀공급장치 12 : 온도계10: steam supply device 12: thermometer
14 : 스팀 공급관 20 : 질소가스 공급장치14 steam supply pipe 20 nitrogen gas supply device
23 : 질소가스 공급관 24 : 제2제어부23: nitrogen gas supply pipe 24: second control unit
36a : 밀(Mill) 40a41a : 백필터36a: Mill 40a41a: bag filter
51 : 싸이클론 71 : 미분탄 저장탱크51: cyclone 71: pulverized coal storage tank
본 고안은 저가의 석탄을 제조하여 고로의 열원으로 사용하는 미분탄 제조설비의 화재예방 시스템에 관한 것으로, 보다 상세히는 스팀(Steam)과 질소(N2) 가스를 이용하여 화재를 효과적으로 예방할 수 있는 미분탄 제조설비의 화재예방 시스템에 관한 것이다.The present invention relates to a fire prevention system of a pulverized coal manufacturing facility that uses inexpensive coal to be used as a heat source of blast furnace, and more specifically, to manufacture pulverized coal which can effectively prevent fire using steam and nitrogen (N2) gas. A fire prevention system of a facility.
일반적으로 고로(高爐)에는 코크스 대체 연료로써 성 에너지인 저가(低價)의 미분탄을 사용하고 있다.In general, blast furnaces use low-cost pulverized coal, which is sex energy, as a coke alternative fuel.
상기 미분탄 제조설비를 제1도에 관련하여 설명하면 다음과 같다. 먼저 미분탄 원료인 괴상의 석탄은 전(前) 공정의 수송 설비에 의해 야드(YARD)에서 불출되어 석탄 저장탱크(30)내에 이송, 저장되고 석탄 공급장치(34)에 의해 배관(35)을 통하여 미분한 제조설비 밀(MILL)(36a)로 공급된 후 내부의 한쌍의 롤(36b)에 의해 200메쉬 이하의 미분으로 파쇄된다. 그리고, 파쇄된 미분탄은 열풍로(47a)의 배가스승압기(47b)로 흡입된 고온(200-30oC)의 배가스에 의해 건조되고, 80-90oC의 온도로 유지되면서 싸이크론(51)으로 이송된다. 또한, 이송된 미분탄 중에서 90%는 써지호퍼(52)를 통하여 취입설비인 저장탱크(71)로 보내지고 나머지 10%는 이송배관(53)을 통하여 두 개의 백-필터(40a)(41a)로 분산되며, 여기서 포집된 10%의 미분탄은 포집 백(40b)(41b)에서 저장탱크(71)로 이송되며 배가스는 방산변(40c)(41c)을 통하여 대기로 배출된다.The pulverized coal production facility will be described with reference to FIG. 1 as follows. First, the lumped coal, which is the pulverized coal raw material, is discharged from the yard by the transportation equipment of the previous process, is transferred and stored in the coal storage tank 30, and is passed through the pipe 35 by the coal supply device 34. After being supplied to the fine manufacturing equipment mill (MILL) 36a, it is crushed into fine powder of 200 mesh or less by a pair of rolls 36b inside. The pulverized pulverized coal is dried by the exhaust gas of the high temperature (200-30 ° C.) sucked into the exhaust gas booster 47b of the hot stove 47a, and is maintained at a temperature of 80-90 ° C. to the cyclone 51. Transferred. In addition, 90% of the pulverized coal is sent to the storage tank 71, which is a blowing facility, through the surge hopper 52, and the remaining 10% is transferred to the two bag-filters 40a and 41a through the transfer pipe 53. 10% of the pulverized coal collected therein is transferred from the collecting bags 40b and 41b to the storage tank 71 and exhaust gas is discharged to the atmosphere through the dispersing sides 40c and 41c.
상기와 같은 일련의 연속조업과정에서 미분탄 성분은 대략 7600kcal 이상의 고발열량을 갖는 것이고, 입자가 200 메쉬 이하로 유지되기 때문에 온도 130oC 이상에서는 자연 발화될 위험성이 항상 존재하는 것이다. 따라서, 이러한 미분탄 제조설비에서는 화재발생시 이를 소화시키기 위한 이산화탄소(CO2) 소화설비와 폭팔방지용 하론(Halon) 소화설비가 석탄저장탱크(30), 밀(36a), 써지호퍼(52), 백-필터(40a)(41a) 등에 장착되어 있다. 그러나, 이러한 미분탄 제조설비에 장착된 이산화탄소 소화 설비(56)와 하론소화 설비등은 화재발생후 동작하기 때문에 근본적인 예방 대책은 되지 못하는 실정이다.In the series of continuous operations, the pulverized coal component has a high calorific value of about 7600 kcal or more, and since particles are maintained at 200 mesh or less, there is always a risk of spontaneous ignition at a temperature above 130 ° C. Therefore, in such a pulverized coal production facility, a carbon dioxide (CO 2 ) fire extinguishing system and a Halon fire extinguishing system for preventing explosions are used as a coal storage tank 30, a mill 36a, a surge hopper 52, a bag- It is attached to the filters 40a and 41a. However, since the carbon dioxide extinguishing facility 56 and the halon digestion facility installed in the pulverized coal production facility operate after a fire, there is no fundamental preventive measure.
본 고안은 상기와 같은 종래의 문제점을 해소하기 위한 것으로서, 미분탄 제어설비의 온도 제어와 산소농도 제어를 동시에 수행함으로서 화재요인을 제거하여 대형화재 및 폭발사고를 사전에 예방할 수 있도록 개선된 미분탄 제조설비의 화재예방 시스템을 제공함에 그 목적이 있다.The present invention is to solve the conventional problems as described above, by performing the temperature control and oxygen concentration control of the pulverized coal control equipment at the same time to improve the pulverized coal production equipment to prevent fire and explosion accidents by eliminating fire factors The aim is to provide a fire prevention system.
상기 목적을 달성하기 위하여 본 발명은, 미분탄 제조설비의 화재와 폭발을 예방하기 위한 시스템에 있어서, 괴상의 석탄을 미분으로 분쇄하는 밀출구의 온도검출용 온도계와, 상기 밀내부와 스팀본관을 연결하고, 중간부에는 자동밸브를 갖는 스팀 공급관 및, 상기 온도계와 스팀 공급관의 자동밸브를 연결하고, 상기 온도계의 검출온도가 일정온도 이상이면 상기 자동 밸브를 개방시켜 밀내부로 스팀을 공급함으로서 내부온도를 냉각시키는 제1제어부를 갖는 스팀 공급 장치;와, 미분탄을 포집하는 백필터 내부의 산소농도를 검출하는 산소농도 측정기와, 상기 백필터 내부와 질소가스 본관을 연결하고, 중간부에는 각각 자동밸브를 갖는 질소가스 공급관 및, 상기 산소농도 측정기의 검출농도가 일정값 이상이면 상기 자동밸브를 각각 개방시켜 백필터 내부로 질소가스를 공급함으로서 산소농도를 저하시키는 제2제어부를 갖는 질소 가스 공급장치;를 포함함을 특징으로 하는 미분탄 제조설비의 화재예방 시스템을 마련함에 의한다.In order to achieve the above object, the present invention, in the system for preventing fire and explosion of the pulverized coal production equipment, the temperature detection thermometer of the exit port for crushing the lumped coal into fine powder, and connecting the inside of the mill and the steam main pipe The intermediate part is connected to a steam supply pipe having an automatic valve and an automatic valve of the thermometer and the steam supply pipe, and when the detection temperature of the thermometer is equal to or higher than a predetermined temperature, the automatic valve is opened to supply steam to the mill. Steam supply device having a first control unit for cooling the; and an oxygen concentration detector for detecting the oxygen concentration inside the bag filter to collect the pulverized coal, and the inside of the bag filter and the nitrogen gas main pipe, each of the automatic valve in the middle If the nitrogen gas supply pipe having a and the detection concentration of the oxygen concentration measuring instrument is a predetermined value or more, the automatic valves respectively open the backfill The nitrogen gas supply apparatus having a second control unit for lowering the oxygen concentration by supplying nitrogen gas into the inside of the chamber by providing a fire prevention system of the pulverized coal production equipment, characterized in that it comprises a.
이하, 본 고안을 도면에 따라서 보다 상세히 설명한다.Hereinafter, the present invention will be described in more detail with reference to the drawings.
먼저, 본 고안이 적용되는 미분탄 제조설비는, 고로열풍로(47a)의 고온(200-300oC)의 배가스가 승압기(47b)에 의해 밀(36a)에 취입되고 괴상의 석탄을 건조한 후 80-90oC 저하되며, 미분탄과 함께 싸이크론(51)을 거쳐 10%의 미분탄을 함유하여 포집설비인 백-필터(40a)(41a)로 이송된다. 그리고, 배가스는 방산변(40c)(41c)을 통하여 대기로 방산되는데 이때의 백-필터 내부 온도는 60-80oC 산소농도는 4-8%을 유지하게 된다.First, in the pulverized coal production equipment to which the present invention is applied, after the exhaust gas of the high temperature (200-300 ° C.) of the blast furnace stove (47a) is blown into the mill (36a) by the booster (47b) and dried the massive coal 80 It is lowered by -90 ° C. and is fed to the bag-filters 40a and 41a, which are 10% pulverized coal, together with the pulverized coal, through the cyclone 51. The exhaust gas is discharged to the atmosphere through the dispersing sides 40c and 41c. At this time, the temperature inside the bag-filter is 60-80 ° C. and the oxygen concentration is maintained at 4-8%.
그러나 배가스 온도의 과다상승과 괴상의 석탄 공급장치(34)에서 석탄공급 지연시에는 미분을 이송하는 배가스 온도가 100oC 이상 급상승되기 때문에 이때 온도저하를 위해 밀(35a)에 장착된 에어밸브(47d)가 열려 대기중의 공기가 흡입되며, 백필터를 통해 대기로 방산되는 과정에서 대기중의 에어(AIR) 혼입에 따른 백(BAG) 내부 화재발생 가능성은 증가되는 것이다.However, when the flue gas temperature is excessively increased and the delayed supply of coal in the lumped coal supply device 34, the flue gas temperature which transfers fine powder is rapidly increased by 100 o C or more. 47d) is opened, the air in the air is inhaled, and the possibility of fire in the bag (BAG) increases due to the mixing of air in the air as it is released into the atmosphere through the bag filter.
이와같은 온도급상승에 대비하여 본 고안은 제2도에 도시된 바와같은 스팀공급장치(10)와, 질소가스 공급장치(20)를 갖추고 있다.In preparation for such a sudden rise in temperature, the present invention has a steam supply device 10 and a nitrogen gas supply device 20 as shown in FIG.
상기 스팀 공급장치(10)는 밀(36a) 출구의 온도를 검출하여 전기적 신호를 발생시키는 온도계(Temperature sensor)(12)와 상기 밀(36a) 내부와 스팀본관(13)을 서로 연통(連通)시키고, 중간부에는 자동밸브(14a)를 갖는 스팀공급관(14)을 갖추며, 상기 온도계(12)에서 검출된 온도에 따라서 상기 자동밸브(14a)를 개폐시키는 제1제어부(15)를 갖는다. 또한, 상기 제1제어부(15)는 제3도에 도시된 바와 같이 내부에 변환기(16), PLC(17), 경보장치(18)와, 자동 및 수동 절환스위치(19) 등을 내장하여, 온도계(12)에서 검출된 온도가 100oC 이상이면, 상기 자동밸브(14a)를 개방시켜 밀(36a) 내부로 스팀(Steam)을 공급하고, 85oC이하이면 상기 자동밸브(14a)를 차단하여 스팀의 공급을 중단시키며, 또한, 제어부(15)에 내장된 자동 및 수동 절환스위치(19)를 이용하여 상기 자동밸브(14a)를 온도설정치(100oC, 85oC)에 따라서 자동으로 작동되도록 하거나, 작업자가 운전실에서 수동으로 상기 자동밸브(14a)를 개폐시킬 수 있는 것이다.The steam supply device 10 communicates a temperature sensor (Temperature sensor) 12 for detecting the temperature of the exit of the mill (36a) to generate an electrical signal, the interior of the mill (36a) and the steam main pipe (13) In addition, the intermediate part is provided with a steam supply pipe 14 having an automatic valve 14a, and has a first control unit 15 for opening and closing the automatic valve 14a according to the temperature detected by the thermometer 12. In addition, as shown in FIG. 3, the first controller 15 includes a transducer 16, a PLC 17, an alarm device 18, an automatic and manual changeover switch 19, and the like. If the temperature detected by the thermometer 12 is 100 o C or more, the auto valve 14a is opened to supply steam into the mill 36a, and if it is below 85 o C, the auto valve 14a is opened. The supply of steam is interrupted and the automatic valve 14a is automatically adjusted according to the temperature set values (100 o C, 85 o C) using the automatic and manual changeover switch 19 built in the control unit 15. Or to allow the operator to open and close the automatic valve 14a manually in the cab.
한편, 상기 질소가스 공급장치(20)는 미분탄을 포집하는 백필터 내부의 산소농도를 검출하기 위한 산소농도 측정기(21)와, 상기 백필터(40a)(41a) 내부와 질소가스 탱크(22)을 연결하고, 중간부에는 자동밸브(23a)를 장착한 질소가스 공급관(23)을 갖추며, 상기 산소농도 측정기(21)에서 검출된 산소농도에 따라서 상기 자동밸브(23a)를 개폐시키는 제2제어부(24)를 갖는다. 또한, 상기 제2제어부(24)는 내부에 변환기(25), PLC(26), 경보장치(27)와, 자동 및 수동절환 스위치(28) 등을 내장하여 상기 산소농도 측정기(21)에서 검출된 백필터(40a)(41a) 내부의 산소농도가 8%이상일 때에는 상기 자동밸브(23a)를 개방시켜 백필터(40a)(41a) 내부로 질소가스를 공급시킴으로서 산소농도를 저하시키고, 산소농도가 4% 이하일 때에는 자동밸브(23a)를 닫게 된다. 또한, 제2제어부(24)에 내장된 자동 및 수동절환 스위치(28)를 이용하여 상기 자동밸브(23a)를 산소농도 설정치(8%, 4%)에 따라서 자동으로 작동되도록 하거나, 작업자가 수동으로 운전실에서 상기 자동밸브(23a)를 개폐시킬 수 있는 것이다.On the other hand, the nitrogen gas supply device 20 is an oxygen concentration measuring instrument 21 for detecting the oxygen concentration inside the bag filter to collect the pulverized coal, and inside the bag filter 40a, 41a and nitrogen gas tank 22 A second control unit having a nitrogen gas supply pipe 23 equipped with an automatic valve 23a at an intermediate portion thereof, and opening and closing the automatic valve 23a according to the oxygen concentration detected by the oxygen concentration measuring instrument 21. Has 24. In addition, the second controller 24 has a transducer 25, a PLC 26, an alarm device 27, an automatic and manual switching switch 28, and the like detected by the oxygen concentration meter 21. When the oxygen concentration in the bag filters 40a and 41a is more than 8%, the automatic valve 23a is opened to supply nitrogen gas into the bag filters 40a and 41a, thereby lowering the oxygen concentration and reducing the oxygen concentration. Is 4% or less, the automatic valve 23a is closed. In addition, the automatic valve 23a is automatically operated according to the oxygen concentration set value (8%, 4%) by using the automatic and manual switching switch 28 built in the second control unit 24, or the operator manually. By opening and closing the automatic valve 23a in the cab.
상기와 같이 구성된 본 고안은, 미분탄을 제조하는 밀(36a) 출구의 온도계(12)에서 온도가 검출되면 전기적 신호가 제1제어부(15)의 변환기(16)에서 PLC(17)로 제공되고, 검출온도가 100oC 이상이면 운전실에서 경보가 발생함과 동시에 자동밸브(14a)가 열리어서 밀(36a) 내부로 스팀이 공급되고, 따라서 스팀에 의해서 밀(36a) 내부가 냉각된다. 또한, 질소가스 공급장치(20)에서는 산소농도 측정기(21)에서 백필터(40a)(41a) 내부의 산소농도를 측정하게 되면, 이러한 전기적 신호가 제2제어부(24)의 변환기(25)에서 산소농도치를 전류값으로 변환(4-20mA)하여 PLC(26)로 제공하며, 산소농도 검출값이 8% 이상시에는 운전실에서 경보가 발생하고, 산소 농도 높음(High)이 표시됨과 동시에 자동밸브(23a)가 개방되어 백필터(40a)(40b)내부에는 질소가 공급된다. 따라서 백필터 (40a)(40b)내의 산소농도는 저하되는 것이다. 한편, 상기 산소농도 측정기(21)에서 검출된 산소농도값이 4% 이하시에는 상기 자동밸브(23a)가 닫히게 되어 백필터(40a)(41a) 내부에는 질소공급 작동이 중단되는 것이다.According to the present invention configured as described above, when a temperature is detected at the thermometer 12 at the exit of the mill 36a for manufacturing pulverized coal, an electrical signal is provided to the PLC 17 at the converter 16 of the first control unit 15, When the detection temperature is 100 ° C. or higher, an alarm is generated in the cab and an automatic valve 14a is opened to supply steam to the mill 36a, thereby cooling the inside of the mill 36a by steam. In addition, when the nitrogen gas supply device 20 measures the oxygen concentration inside the bag filters 40a and 41a by the oxygen concentration measuring unit 21, the electrical signal is transmitted by the converter 25 of the second control unit 24. The oxygen concentration value is converted into a current value (4-20mA) and provided to the PLC 26. When the oxygen concentration detection value is 8% or more, an alarm is issued in the cab, and the oxygen concentration high is displayed and an automatic valve ( 23a) is opened, and nitrogen is supplied into the bag filters 40a and 40b. Therefore, the oxygen concentration in the bag filters 40a and 40b is lowered. On the other hand, when the oxygen concentration value detected by the oxygen concentration measuring instrument 21 is 4% or less, the automatic valve 23a is closed, and the nitrogen supply operation is stopped inside the bag filters 40a and 41a.
상기와 같은 본 고안의 시스템에서 작업자는 운전실내에 갖춰진 제1 및 제2제어부(15)(24)의 자동 및 수동절환 스위치(19)(28)를 조작함으로서 스팀 및 질소가스의 돌발적인 취입이 필요할 경우에는 수작업으로 즉시 공급할 수도 있는 것이다.In the system of the present invention as described above, the operator operates the automatic and manual changeover switches 19 and 28 of the first and second control units 15 and 24 provided in the cab, so that the sudden blowing of steam and nitrogen gas is prevented. If necessary, it can be supplied immediately by hand.
상기에서와 같이 본 고안에 의하면, 미분탄 제조설비내에 스팀과 질소가스를 공급하여 미분탄의 온도와 산소농도를 적절히 제어함으로서 미분탄 제조작업시 대형화재 및 폭발사고를 사전에 예방하는 실용상의 효과를 얻는 것이다.As described above, according to the present invention, by supplying steam and nitrogen gas into the pulverized coal production facility, by controlling the temperature and oxygen concentration of the pulverized coal appropriately, the practical effect of preventing large fire and explosion accident in the pulverized coal production operation is obtained in advance. .
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019950009299U KR0116821Y1 (en) | 1995-05-02 | 1995-05-02 | Fire prevention system of powdered coal manufacture plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019950009299U KR0116821Y1 (en) | 1995-05-02 | 1995-05-02 | Fire prevention system of powdered coal manufacture plant |
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| Publication Number | Publication Date |
|---|---|
| KR960037430U KR960037430U (en) | 1996-12-16 |
| KR0116821Y1 true KR0116821Y1 (en) | 1998-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019950009299U KR0116821Y1 (en) | 1995-05-02 | 1995-05-02 | Fire prevention system of powdered coal manufacture plant |
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| KR (1) | KR0116821Y1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100916040B1 (en) * | 2002-12-04 | 2009-09-08 | 주식회사 포스코 | An apparatus for preventing the inflammation of bag filter in pulverized coal manufacturing system |
| KR101355691B1 (en) * | 2013-06-26 | 2014-01-28 | 한국남동발전 주식회사 | Pulverizer and coal burning system having the same |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100376516B1 (en) * | 1999-08-26 | 2003-03-17 | 주식회사 포스코 | Apparatus for preventing feed line from being filled up |
| KR20020001130A (en) * | 2000-06-26 | 2002-01-09 | 이구택 | Control apparatus and method for preventing fire of coke from arising |
| KR101109480B1 (en) * | 2009-07-24 | 2012-02-06 | 현대제철 주식회사 | Device and method for supplying nitrogen |
-
1995
- 1995-05-02 KR KR2019950009299U patent/KR0116821Y1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100916040B1 (en) * | 2002-12-04 | 2009-09-08 | 주식회사 포스코 | An apparatus for preventing the inflammation of bag filter in pulverized coal manufacturing system |
| KR101355691B1 (en) * | 2013-06-26 | 2014-01-28 | 한국남동발전 주식회사 | Pulverizer and coal burning system having the same |
Also Published As
| Publication number | Publication date |
|---|---|
| KR960037430U (en) | 1996-12-16 |
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