KR0116087Y1 - Oxygen consistency control apparatus of powdered coal manufacture facilities use of heat furnace waste gas - Google Patents
Oxygen consistency control apparatus of powdered coal manufacture facilities use of heat furnace waste gas Download PDFInfo
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- KR0116087Y1 KR0116087Y1 KR2019940034886U KR19940034886U KR0116087Y1 KR 0116087 Y1 KR0116087 Y1 KR 0116087Y1 KR 2019940034886 U KR2019940034886 U KR 2019940034886U KR 19940034886 U KR19940034886 U KR 19940034886U KR 0116087 Y1 KR0116087 Y1 KR 0116087Y1
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- pulverized coal
- oxygen concentration
- pipe
- waste gas
- coal production
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Classifications
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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
- C10B21/00—Heating of coke ovens with combustible gases
- C10B21/10—Regulating and controlling the combustion
-
- 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
Abstract
본 고안은 미분탄 제조설비의 산소농도 제어장치에 관한 것으로서, 폐열회수장치(1)와 배관(2), 미분탄 제조설비(3) 및 대기 방산용 연돌(4)을 구비하여 미분탄을 제조하는 장치에 있어서, 폐열회수장치(1) 후단의 배관에 자동제어밸브(11)와 온도검출단(12)을 갖춘 폐가스회수배관(13)의 일단을 연결하고 타단을 배관(2)에 연결하며, 상기 폐열회수장치(1)에 인접한 배관(2)에는 자동제어밸브(14)와 온도검출단(15)을 설치하고, 상기 미분탄 제조설비(3)의 입구측 배관(2)에는 폐가스 온도검출단(16)을, 미분탄 제조설비(3)내에는 산소농도 검출단(17)을 각각 설치하여 상기 온도검출단(12), (15), (16)과 산소농도 검출단(17)의 검출신호로 제어부(18)가 자동제어밸브(11), (14)를 제어하여 미분탄 제조설비(3)내의 산소농도를 일정하게 유지하도록 구성되어 미분탄 제조설비내 산소농도를 낮은 상태로 항상 일정하게 유지시킬 수 있어 미분탄 제조설비의 화재발생을 방지할 수 있는 열풍로 폐가스를 이용한 미분탄 제조설비의 산소농도 제어장치이다.The present invention relates to an oxygen concentration control apparatus for pulverized coal production equipment, comprising: a waste heat recovery device (1) and a pipe (2), pulverized coal production equipment (3), and an atmospheric dispersion stack (4). The waste heat recovery device 1 is connected to one end of the waste gas recovery pipe 13 having the automatic control valve 11 and the temperature detecting end 12 and the other end to the pipe 2, and the waste heat recovery pipe 1. An automatic control valve 14 and a temperature detection end 15 are provided in the pipe 2 adjacent to the recovery device 1, and a waste gas temperature detection end 16 is provided in an inlet pipe 2 of the pulverized coal production plant 3. ) Is provided in the pulverized coal production facility 3, and the oxygen concentration detecting stage 17 is provided, respectively, to control the detection signals of the temperature detecting stages 12, 15 and 16 and the oxygen concentration detecting stage 17. (18) is configured to control the automatic control valves (11), (14) to maintain a constant oxygen concentration in the pulverized coal production equipment (3) It is an oxygen concentration control device for pulverized coal manufacturing equipment using waste gas, which can keep the oxygen concentration in a low state at all times and prevent fire occurrence of pulverized coal manufacturing equipment.
Description
제1도는 종래 미분탄 제조장치를 나타낸 도면.1 is a view showing a conventional pulverized coal production apparatus.
제2도는 본 고안 미분탄 제조설비의 산소농도 제어장치를 나타낸 도면.2 is a view showing the oxygen concentration control device of the present invention pulverized coal production equipment.
제3도는 미분탄제조량에 따른 미분탄제조설비내의 산소농도변화를 나타낸 그래프이다.3 is a graph showing the oxygen concentration change in the pulverized coal production plant according to the pulverized coal production amount.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 폐열회수장치 2 : 배관1: waste heat recovery device 2: piping
3 : 미분탄 제조설비 4 : 대기 방산용 연돌3: pulverized coal manufacturing facility 4: atmospheric release stack
5 : 대기공기흡입구 6 : 밸브5: atmospheric air inlet 6: valve
11, 14 : 자동제어밸브 12, 15, 16 : 온도검출단11, 14: automatic control valve 12, 15, 16: temperature detection stage
13 : 폐가스회수배관 17 : 산소농도 검출단13: waste gas recovery pipe 17: oxygen concentration detection stage
18 : 제어부 G : 폐가스18: control unit G: waste gas
B: 부스타 F : 팬B: Busta F: Fan
본 고안은 미분탄 제조설비의 산소농도 제어장치에 관한 것으로서, 특히 용광로의 보조연료로 사용되는 미분탄(200mesh이하가 80%이상)을 제조하는데 석탄건조용으로 열풍로 폐가스를 사용하는 미분탄 제조설비내에서 화재의 원인이 되는 산소농도를 감소시킬 수 있는 열풍로 폐가스를 이용한 미분탄 제조설비의 산소농도 제어장치에 관한 것이다.The present invention relates to an oxygen concentration control apparatus of a pulverized coal production plant, and in particular, to manufacture pulverized coal (less than 200 mesh is 80% or more) used as auxiliary fuel of a blast furnace in a coal pulverized coal production facility using hot stove waste gas for coal drying. The present invention relates to an oxygen concentration control apparatus of a pulverized coal production facility using waste gas from a hot stove that can reduce oxygen concentration causing a fire.
종래의 미분탄 제조는 제1도에 도시한 바와같이 열풍로에서 발생한 폐가스(G)중 일부가 폐열회수장치(1)를 거치기전에 있는 배관(2)을 통해 미분탄 제조설비(3)로 유입되어 석탄 건조용 가스로 사용되고 나머지 폐가스는 폐열회수장치(1)와 대기 방산용 연돌(4)을 거쳐 대기로 방출되고, 미분탄 제조설비(3)는 300℃의 열풍로 폐가스(G)로 석탄을 건조시키면서 미세하게 석탄을 분쇄하여 미분탄을 제조한다.In the conventional pulverized coal production, as shown in FIG. 1, some of the waste gas (G) generated in the hot stove is introduced into the pulverized coal production facility (3) through a pipe (2) before passing through the waste heat recovery device (1). It is used as a drying gas and the remaining waste gas is discharged to the atmosphere through the waste heat recovery device (1) and the atmospheric diffusion stack (4), and the pulverized coal production facility (3) is drying coal with hot gas (G) with a hot air at 300 ° C. Finely grind coal to produce pulverized coal.
이와 같이 고온의 열풍로 폐가스(G)로 석탄을 건조하기 때문에 제조설비내 특히 백필터(bag filter)가 다량 설치되어 있는 집진기내에서는 항상 화재가 발생되는 문제점이 있다.In this way, since coal is dried by hot gas in a hot gas waste gas (G), there is a problem that a fire always occurs in a dust collector in which a large amount of bag filters are installed in a manufacturing facility.
그리고 미분탄 제조과정에서 미분탄제조량이 많을시는 건조에 필요한 열이 많이 소요되므로 산소농도가 낮고(3%수준) 온도는 높은(300℃)열풍로 폐가스로 전량 사용이 가능하나, 미분탄 제조량이 적을 경우는 석탄 건조에 필요한 열이 적게 소요되므로 미분탄 제조설비로 들어오는 열풍로 폐가스의 온도를 낮추어 주어야만 한다.In the process of manufacturing pulverized coal, when the amount of pulverized coal is produced, a large amount of heat is required for drying, so it is possible to use the entire amount of waste gas with low oxygen concentration (3% level) and high temperature (300 ℃), but the amount of pulverized coal produced is small. Since less heat is required for coal drying, the temperature of the waste gas must be lowered by the hot blast that enters the pulverized coal production plant.
이를 위해 종전에는 미분탄 제조설비에 설치되어 있는 대기공기흡입구(5)의 밸브(6)를 열어 25℃의 대기공기를 흡입시켜 폐가스의 온도를 낮추어 주고 있다.To this end, the valve 6 of the atmospheric air inlet 5 installed in the pulverized coal manufacturing facility is opened to suck the atmospheric air at 25 ° C. to lower the temperature of the waste gas.
그러나 대기 공기중에는 산소가 21%의 농도나 포함되어 있기 때문에 미분탄 제조설비내의 산소농도가 급격히 증가하며, 산소농도가 12% 이상시 화재가 발생하게 되는 문제점이 있었다.However, since the concentration of oxygen in the air contained 21%, the oxygen concentration in the pulverized coal manufacturing facility is rapidly increased, and there is a problem that a fire occurs when the oxygen concentration is 12% or more.
본 고안은 상기한 실정을 감안하여 종래 미분탄 제조시에 발생하는 문제점을 해결하고자 안출한 것으로서, 미분탄 제조량의 많고 적음에 관계없이 미분탄 제조설비내에 산소농도를 저하시킴과 동시에 산소의 량을 일정하게 유지시킬수 있는 열풍로 폐가스를 이용한 미분탄 제조설비의 산소농도 제어장치를 제공함에 그 목적이 있다.The present invention has been made in view of the above-described situation, and has been made to solve the problems occurring in the manufacture of conventional pulverized coal. Regardless of the amount and quantity of pulverized coal produced, the oxygen concentration is lowered in the pulverized coal production facility and the amount of oxygen is kept constant. It is an object of the present invention to provide an oxygen concentration control apparatus for pulverized coal production equipment using waste gas.
상기한 목적을 달성하기 위한 본 고안 산소농도 제어장치는 폐열회수장치(1)와 배관(2), 미분탄 제조설비(3) 및 대기 방산용 연돌(4)을 구비하여 미분탄을 제조하는 장치에 있어서, 폐열회수장치(1) 후단의 배관에 자동제어밸브(11)와 온도검출단(12)을 갖춘 폐가스회수배관(13)의 일단을 연결하고 타단을 배관(2)에 연결하며, 상기 폐열회수장치(1)에 인접한 배관(2)에는 자동제어밸브(14)와 온도검출단(15)을 설치하고, 상기 미분탄 제조설비(3)의 입구측 배관(2)에는 폐가스 온도 검출단(16)을, 미분탄 제조설비(3)내에는 산소농도 검출단(17)을 각각 설치하여 상기 온도검출단(12), (15), (16)과 산소농도 검출단(17)의 검출신호로 제어부(18)가 자동제어밸브(11), (14)를 제어하여 미분탄 제조설비(3)내의 산소농도를 일정하게 유지하도록 구성된다.In order to achieve the above object, the present invention oxygen concentration control device includes a waste heat recovery device (1) and a pipe (2), a pulverized coal production facility (3), and an atmospheric dispersion stack (4) in an apparatus for producing pulverized coal. , One end of the waste gas recovery pipe 13 having the automatic control valve 11 and the temperature detection end 12 is connected to the pipe of the rear end of the waste heat recovery device 1, and the other end is connected to the pipe 2. The pipe 2 adjacent to the apparatus 1 is provided with an automatic control valve 14 and a temperature detecting end 15, and the waste gas temperature detecting end 16 is provided at an inlet side pipe 2 of the pulverized coal production plant 3. In the pulverized coal production facility 3, an oxygen concentration detecting stage 17 is provided, respectively, so as to control the control unit with the detection signals of the temperature detecting stages 12, 15 and 16 and the oxygen concentration detecting stage 17. 18 is configured to control the automatic control valves 11 and 14 to maintain a constant oxygen concentration in the pulverized coal production plant 3.
미설명부호 B와 F는 각각 미분탄 제조설비(3)내로의 폐가스의 공급을 원활하게 하여주는 부스타 와 팬이다.Unexplained symbols B and F are boosters and fans, respectively, which facilitate the supply of waste gas into the pulverized coal production facility (3).
이하 첨부도면을 참조하여 본 고안의 작용 및 효과를 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail the operation and effect of the present invention.
제2도는 본 고안 미분탄 제조설비의 산소농도 제어장치를 도시한 것으로서, 열풍로 폐열회수장치(1)를 거치기 전의 폐가스(G)의 온도는 300℃, 폐열회수장치(1)를 거친 폐가스(G)의 온도는 150℃이다.Figure 2 shows the oxygen concentration control device of the present pulverized coal production equipment, the temperature of the waste gas (G) before passing through the hot stove waste heat recovery device (1) is 300 ℃, waste gas (G) through the waste heat recovery device (G) ) Is 150 ° C.
따라서 미분탄 제조설비(3)에서 미분탄의 제조량이 많고 적음에 관계없이 미분탄 제조가 이루어지고 있는 동안은 도시하고 않은 조작판넬부를 조작하여 제조설비중 산소농도를 설정하게 되면, 미분탄 제조설비(3)에 설치된 산소농도검출부(17)에서 검출한 산소농도가 설정한 산소농도값과 같아지게 되도록 제어부(18)는 폐열회수장치(1)를 거치기전에 온도검출단(15)과 거친후의 온도검출단(12)에서 검출한 폐가스(G)의 온도와 온도검출단(16)에서 검출한 폐열회수장치(1)를 거치기 전에 유입된 폐가스와 폐열회수장치(1)를 거친후에 유입된 폐가스가 혼합된 혼합가스온도 데이타를 입력하여 연산하고 그 연산결과에 따라 폐열회수장치(1)를 거치기전의 배관(2)에 설치된 자동제어밸브(14)의 개도와 폐열회수장치(1)를 거친후 폐가스회수배관(13)에 설치된 자동제어밸브(11)의 개도를 연속적으로 제어하여 미분탄 제조설비(3)내의 산소농도를 설정된 산소농도로 유지시켜 주게 된다.Therefore, in the pulverized coal production facility 3, when the pulverized coal production is being made regardless of the quantity of pulverized coal produced or not, if the oxygen concentration in the production facility is set by operating the operation panel (not shown), the pulverized coal production facility 3 The control unit 18 controls the temperature detection stage 15 after passing through the waste heat recovery device 1 so that the oxygen concentration detected by the installed oxygen concentration detection unit 17 is equal to the set oxygen concentration value. Mixed gas mixed with the waste gas (G) detected by the waste gas (G) and the waste gas introduced after passing through the waste heat recovery device (1) before passing through the waste heat recovery device (1) detected by the temperature detection stage (16). After inputting and calculating the temperature data, the waste gas recovery pipe (13) passes through the opening of the automatic control valve (14) installed in the pipe (2) before the waste heat recovery device (1) passes through the waste heat recovery device (1). Installed in) The opening degree of the control valve 11 is continuously controlled to maintain the oxygen concentration in the pulverized coal production facility 3 at the set oxygen concentration.
제3도는 미분탄 제조량에 따른 미분탄 제조설비내의 산소농도를 나타낸 것으로, 실선으로 나타낸 종래의 경우는 산소농도가 10∼11%정도로 특히 미분탄 제조량이 적을때는 산소농도가 12% 수준에 근접하여 화재위험 수준에 있고, 점선으로 나타낸 본 고안에서는 산소의 농도를 7%수준으로 낮출수 있음과 동시에 미분탄 제조량이 적을때나 많을때에도 대기 공기를 전혀 흡입하지 않기 때문에 미분탄 제조설비내 산소농도가 7% 수준으로 항상 일정하게 유지됨을 알 수 있다.3 shows the oxygen concentration in the pulverized coal production facility according to the amount of pulverized coal. In the conventional solid line, the oxygen concentration is about 10-11%, especially when the pulverized coal production is small, the oxygen concentration is close to 12%. In the present invention indicated by the dotted line, the oxygen concentration can be lowered to 7% and at the same time, the oxygen concentration in the pulverized coal manufacturing equipment is always at 7% because it does not inhale atmospheric air even when the amount of pulverized coal is low or high. It can be seen that it remains constant.
상기한 바와 같이 작용하는 본 고안은 미분탄 제조설비내 산소농도를 낮은 상태로 항상 일정하게 유지시킬 수 있어 미분탄 제조설비의 화재발생을 방지할 수 있는 효과가 있다.The present invention, which acts as described above, can maintain the oxygen concentration in the pulverized coal production equipment at a constant state at all times, thereby preventing the fire of the pulverized coal production equipment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019940034886U KR0116087Y1 (en) | 1994-12-21 | 1994-12-21 | Oxygen consistency control apparatus of powdered coal manufacture facilities use of heat furnace waste gas |
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| Application Number | Priority Date | Filing Date | Title |
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| KR2019940034886U KR0116087Y1 (en) | 1994-12-21 | 1994-12-21 | Oxygen consistency control apparatus of powdered coal manufacture facilities use of heat furnace waste gas |
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| KR960022606U KR960022606U (en) | 1996-07-20 |
| KR0116087Y1 true KR0116087Y1 (en) | 1998-04-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100460658B1 (en) * | 2000-06-29 | 2004-12-09 | 주식회사 포스코 | An apparatus for analysising and controlling oxygen concentration of a fine coke device |
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| KR100402000B1 (en) * | 1999-07-29 | 2003-10-17 | 주식회사 포스코 | Dry gas control apparatus in crush appratus for pulverized coal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100460658B1 (en) * | 2000-06-29 | 2004-12-09 | 주식회사 포스코 | An apparatus for analysising and controlling oxygen concentration of a fine coke device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR960022606U (en) | 1996-07-20 |
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