KR20120020350A - Apparatus and method for decreasing diffusion of by-product gas in ironworks - Google Patents

Apparatus and method for decreasing diffusion of by-product gas in ironworks Download PDF

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KR20120020350A
KR20120020350A KR1020100083921A KR20100083921A KR20120020350A KR 20120020350 A KR20120020350 A KR 20120020350A KR 1020100083921 A KR1020100083921 A KR 1020100083921A KR 20100083921 A KR20100083921 A KR 20100083921A KR 20120020350 A KR20120020350 A KR 20120020350A
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South Korea
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holder
ldg
cog
bfg
product gas
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KR1020100083921A
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Korean (ko)
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KR101193776B1 (en
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박병철
김인수
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현대제철 주식회사
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    • 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
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
    • F27D17/002—Details of the installations, e.g. fume conduits or seals
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/002—Evacuating and treating of exhaust gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/38—Removal of waste gases or dust
    • 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
    • F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
    • F27D21/02—Observation or illuminating devices
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C2100/00—Exhaust gas
    • C21C2100/02—Treatment of the exhaust gas
    • 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
    • F27D19/00—Arrangements of controlling devices
    • F27D2019/0028—Regulation
    • F27D2019/0031—Regulation through control of the flow of the exhaust gases

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

PURPOSE: An apparatus and a method for decreasing the diffusion of by-product gas in ironworks are provided to store extra COG and LDG, which exceed the storage capacity of corresponding holders, in a BFG holder and supply the COG and LDG mixed with BFG to a generating station. CONSTITUTION: An apparatus for decreasing the diffusion of by-product gas in ironworks comprises a BFG holder(12) which stores BFG(Blast Furnace Gas), a COG holder(22) which stores COG(Cokes Oven Gas), an LDG holder(32) which stores LDG(LinzDwawitz Gas), a COG delivery pipe(24) which is connected between the BFG holder and the COG holder, an LDG delivery pipe(34) which is connected between the BFG holder and the LDG holder, a COG opening/shutting valve(26) which is installed in the COG delivery pipe, an LDG opening/shutting valve(36) which is installed in the LDG delivery pipe, and an energy center computer(50) which opens and closes the COG and LDG opening/shutting valves according to the amounts of COG and LDG drawn into the COG and LDG holders.

Description

제철소의 부생가스 방산 감소 장치 및 그 방법{apparatus and method for decreasing diffusion of by-product gas in ironworks}Apparatus and method for decreasing diffusion of by-product gas in ironworks}

본 발명은 제철소에서 발생하는 부생가스의 대기 방산을 감소시킬 수 있도록 된 제철소의 부생가스 방산 감소 장치 및 그 방법에 관한 것이다.The present invention relates to an apparatus and a method for reducing by-product gas emission of a steel mill which can reduce the atmospheric emission of by-product gas generated in the steel mill.

제철소에서는 각종 공정의 진행 중 부생가스가 필연적으로 발생한다.By-product gas is inevitably generated during various processes in steel mills.

상기 부생가스로는 제강과정에서 발생하는 LDG(LinzDwawitz Gas), 코크스 건류과정에서 발생하는 COG(Cokes Oven Gas) 및 고로에서 발생하는 BFG(Blast Furnace Gas)가 있다.The by-product gas includes LDG (LinzDwawitz Gas) generated in the steelmaking process, COG (Cokes Oven Gas) generated in the coke distillation process and BFG (Blast Furnace Gas) generated in the blast furnace.

상기 COG는 열량이 대략 4200~4400kcal/Nm3이고, LDG는 2000kcal/Nm3, BFG는 780kcal/Nm3수준이다.The COG is about 4200 ~ 4400kcal / Nm 3 calories, LDG 2000kcal / Nm 3 , BFG is 780kcal / Nm 3 level.

통상적으로 상기 COG는 열량이 높아 제강, 열연, 후판, 소결 및 소성 공정에서 연료로 사용되고, BFG와 LDG는 자가 발전소의 연료원으로 주로 사용하고 있다.Typically, the COG is used as a fuel in steelmaking, hot rolling, thick plates, sintering and sintering processes due to high calorific value, and BFG and LDG are mainly used as fuel sources of self-generating power plants.

본 발명은 부생가스 중 COG와 LDG가 대기중으로 방산되는 것을 방지하여 부생가스의 대기 방산량을 감소시킬 수 있으며, 이에 제철소의 에너지 활용 효율이 향상될 수 있도록 된 제철소의 부생가스 방산 감소 장치 및 그 방법을 제공함에 그 목적이 있다.The present invention can prevent the by-product COG and LDG dissipated into the air to reduce the air emissions of by-product gas, and thus the by-product gas emission reduction device of the steel mill to improve the energy utilization efficiency of the steel mill and its method The purpose is to provide.

상기와 같은 목적을 달성하기 위한 본 발명에 따른 부생가스 방산 감소 장치는,Byproduct gas emission reduction device according to the present invention for achieving the above object,

BFG가 저장되는 BFG홀더와;A BFG holder in which the BFG is stored;

COG가 저장되는 COG홀더와;A COG holder in which COG is stored;

LDG가 저장되는 LDG홀더와;An LDG holder in which an LDG is stored;

상기 BFG홀더와 COG홀더의 사이 및 상기 BFG홀더와 LDG홀더의 사이에 각각 연결되는 COG이동배관과 LDG이동배관;A COG moving pipe and an LDG moving pipe connected between the BFG holder and the COG holder and between the BFG holder and the LDG holder, respectively;

상기 COG이동배관과 LDG이동배관 각각에 설치된 COG개폐밸브와 LDG개폐밸브 및;A COG open / close valve and an LDG open / close valve installed on each of the COG moving pipe and the LDG moving pipe;

상기 COG홀더, LDG홀더로 유입되는 COG와 LDG 양에 따라 상기 COG개폐밸브와 LDG개폐밸브를 개폐 제어하는 에너지센터의 컴퓨터;A computer in the energy center for opening and closing the COG open / close valve and the LDG open / close valve according to the amount of COG and LDG flowing into the COG holder and the LDG holder;

를 포함한다.It includes.

또한, 상기 에너지센터의 컴퓨터는 상기 BFG홀더내 혼합가스의 열량 정보를 상기 발전소에 전송하는 것을 특징으로 한다.In addition, the computer of the energy center is characterized in that for transmitting the heat information of the mixed gas in the BFG holder to the power plant.

또한, 상기 목적을 달성하기 위한 부생가스 방산 감소 방법은,In addition, by-product gas dispersion reduction method for achieving the above object,

COG와 LDG가 각각 COG홀더와 LDG홀더에 저장될 수 있는지의 여부를 판단하는 부생가스 저장가능여부 판단단계와;Determining whether the by-product gas can be stored whether or not the COG and the LDG can be stored in the COG holder and the LDG holder, respectively;

상기 부생가스 저장가능여부 판단단계에서 COG와 LDG가 각각 COG홀더와 LDG홀더에 저장될 수 없는 것으로 판단되면 상기 COG와 LDG를 BFG홀더로 유입시키는 COG와 LDG의 BFG홀더 유입단계 및;If it is determined that COG and LDG cannot be stored in the COG holder and the LDG holder, respectively, in the step of determining whether the by-product gas can be stored, the BFG holder inflow step of COG and LDG for introducing the COG and LDG into the BFG holder;

상기 BFG홀더내의 혼합가스를 발전소로 공급하는 혼합가스 공급단계를 포함한다.And a mixed gas supplying step of supplying the mixed gas in the BFG holder to a power plant.

또한, 상기 부생가스 저장가능여부 판단단계는 COG와 LDG의 발생량을 체크하는 부생가스 발생량 체크단계와,In addition, the step of determining whether the by-product gas can be stored is a by-product gas generation check step of checking the generation amount of the COG and LDG;

상기 COG홀더와 LDG홀더의 현재 가스 충전량을 체크하는 가스홀더 충전량 체크단계와,A gas holder filling amount checking step of checking a current gas filling amount of the COG holder and the LDG holder;

상기 COG 및 LDG의 발생량과 해당 홀더의 추가 저장 가능 용량을 비교하는 부생가스 발생량과 해당 홀더의 추가 저장 가능 용량 비교단계를 포함하는 것을 특징으로 한다.Comparing the by-product gas generation amount and the additional storage capacity of the holder for comparing the generation amount of the COG and LDG and the additional storage capacity of the holder.

또한, 상기 혼합가스 공급단계 이전에 혼합가스의 열량정보를 상기 발전소로 미리 전송하는 혼합가스 열량정보 전송단계를 더 포함하는 것을 특징으로 한다.The method may further include a mixed gas calorie information transmitting step of transmitting the calorie information of the mixed gas to the power plant in advance before the mixed gas supplying step.

이상 설명한 바와 같은 본 발명에 따르면,According to the present invention as described above,

COG와 LDG의 해당 홀더(COG홀더와 LDG홀더) 저장 용량 초과 발생량은 저장 공간에 여유가 충분한 대용량의 BFG홀더로 공급되어 저장되었다가 혼합가스 형태로 발전소의 연료로 사용된다.Corresponding holders of COG and LDG (COG holders and LDG holders) The excess storage capacity is supplied to a large capacity BFG holder with sufficient space in the storage space and stored and used as fuel for the power plant in the form of mixed gas.

따라서, COG와 LDG가 해당 홀더의 저장 용량을 초과하여 발생하더라도 대기중으로 방산되는 것이 방지된다.Thus, even if the COG and LDG occur in excess of the storage capacity of the holder, it is prevented from dissipating to the atmosphere.

따라서, 부생가스의 방산량이 감소되고, 제철소의 에너지 효율이 향상되는 효과가 있다.Therefore, the amount of by-product gas dissipation is reduced, and the energy efficiency of the steel mill is improved.

도 1은 제철소 부생가스의 발생, 저장 및 용처를 나타낸 개략도로서 본 발명에 따른 부생가스 방산 감소 장치를 포함한다.
도 2는 본 발명에 따른 부생가스 방산 감소 방법의 순서도이다.Figure 1 is a schematic diagram showing the generation, storage and application of the steel mill by-product gas comprising a by-product gas emission reduction device according to the present invention.
2 is a flow chart of the by-product gas emission reduction method according to the present invention.

이하, 본 발명을 첨부된 예시도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.

도 1에 도시된 바와 같이, 제철소의 부생가스는 고로(10)와 코스크로(20) 및 전로(30)에서 주로 발생한다.As shown in FIG. 1, by-product gas of the steel mill is mainly generated in the blast furnace 10, the coke oven 20, and the converter 30.

고로(10)에서는 제선중 BFG가 발생하고, 코크스로(코크스오븐;20)에서는 코크스 소성 중에 COG가 발생하며, 전로(30)에서는 제강중 LDG가 발생한다.In the blast furnace 10, BFG is generated during steelmaking, in the coke oven (coke oven) 20, COG is generated during coke firing, and in the converter 30, LDG is produced during steelmaking.

상기 BFG와, COG 및 LDG는 배관을 통해 각각 전용으로 마련된 BFG홀더(12)와, COG홀더(22) 및 LDG홀더(32)에 저장된다.The BFG, the COG, and the LDG are stored in the BFG holder 12, the COG holder 22, and the LDG holder 32, which are provided exclusively through pipes.

상기 BFG는 발생 즉시 고로와 코스스로에서 다시 사용되고, 남은 양이 BFG홀더(12)에 저장되었다가 제철소내 자가 발전소(40)의 연료로 공급된다.The BFG is immediately reused in the blast furnace and coarse furnace, and the remaining amount is stored in the BFG holder 12 and then supplied to fuel the autogenous power plant 40 in the steel mill.

상기 COG 역시 고로와 코크스로에서 즉시 사용되고, 잔량이 상기 COG홀더(22)에 저장되었다가 제철공장의 다양한 공정들 즉, 제강, 열연, 후판, 소결, 소성 공정에서 열원으로 사용된다. 그리고 그 나머지가 상기 발전소로 공급된다.The COG is also used immediately in the blast furnace and coke oven, the remaining amount is stored in the COG holder 22 is used as a heat source in various processes of the steel mill, that is, steelmaking, hot rolled, thick plate, sintering, firing process. And the rest is fed to the power plant.

상기 LDG는 발생 후 상기 LDG홀더(32)에 저장되었다가 거의 전량이 상기 발전소(40)의 원료로 사용된다.The LDG is stored in the LDG holder 32 after generation, and almost all of the LDG is used as a raw material of the power plant 40.

한편, 상기 BFG의 발생량이 상기 COG 또는 LDG에 비해 매우 많기 때문에 상기 BFG홀더(12) 또한 상기 COG홀더(22)나 LDG홀더(32)에 비해 매우 큰 용량으로 건설된다.On the other hand, since the generation amount of the BFG is much higher than the COG or LDG, the BFG holder 12 is also constructed with a much larger capacity than the COG holder 22 or LDG holder 32.

예를 들어, 상기 COG홀더(22)와 LDG홀더(32)의 저장 용량이 각각 7만㎥, 8만㎥인 경우 상기 BFG홀더(12)의 저장 용량은 20만㎥로서 월등히 큰 크기로 여유있게 건설된다.For example, when the storage capacities of the COG holder 22 and the LDG holder 32 are 70,000 m 3 and 80,000 m 3, respectively, the storage capacity of the BFG holder 12 is 200,000 m 3, which is extremely large. Is built.

본 발명은 상기 BFG홀더(12)의 충분한 저장 용량을 이용하여 COG와 LDG의 대기 방산을 최소화하는 것에 그 요지가 있다.The present invention is to minimize the air dissipation of COG and LDG by using a sufficient storage capacity of the BFG holder 12.

이를 위해 상기 BFG홀더(12)와 상기 COG홀더(22)의 사이에는 COG이동배관(24)가 설치되고, 상기 COG이동배관(24)에는 COG개폐밸브(26)가 설치된다.To this end, a COG moving pipe 24 is installed between the BFG holder 12 and the COG holder 22, and a COG opening and closing valve 26 is installed at the COG moving pipe 24.

마찬가지로 상기 BFG홀더(12)와 상기 LDG홀더(32)의 사이에도 LDG이동배관(34)이 설치되고, 상기 LDG이동배관(34)에는 LDG개폐밸브(36)가 설치된다.Similarly, an LDG moving pipe 34 is installed between the BFG holder 12 and the LDG holder 32, and an LDG opening / closing valve 36 is installed in the LDG moving pipe 34.

한편, 상기 BFG홀더(12), COG홀더(22), LDG홀더(32) 각각의 가스 저장량은 에너지센터의 컴퓨터(50)에 실시간으로 전달되고, 상기 에너지센터의 컴퓨터(50)는 상기 COG개폐밸브(26)와 LDG개폐밸브(36)의 작동을 제어할 수 있도록 되어 있다.On the other hand, the gas storage amount of each of the BFG holder 12, COG holder 22, LDG holder 32 is delivered to the computer 50 of the energy center in real time, the computer 50 of the energy center is the COG opening and closing The operation of the valve 26 and the LDG open / close valve 36 can be controlled.

상기 에너지센터의 컴퓨터(50)에는 상기 고로(10)와 코크스로(20) 및 전로(30)에서 발생하여 상기 각각의 홀더들로 유입되는 BFG, COG, LDG의 양이 실시간으로 전달된다.The amount of BFG, COG and LDG generated in the blast furnace 10, the coke oven 20 and the converter 30 and introduced into the respective holders is delivered to the computer 50 of the energy center in real time.

또한, 상기 각 홀더들의 최대 저장 용량도 상기 에너지센터의 컴퓨터(50)에 저장되어 있다.In addition, the maximum storage capacity of each holder is also stored in the computer 50 of the energy center.

따라서, 상기 컴퓨터(50)는 상기 COG홀더(22)와 LDG홀더(32)의 저장 용량을 초과하는 COG 및 LDG가 발생하였을 경우, 상기 COG개폐밸브(26)과 LDG개폐밸브(36)을 개방하여 저장용량을 초과하는 COG와 LDG가 각각 COG이동배관(24)과 LDG이동배관(34)를 통해 상기 BFG홀더(12)로 유입될 수 있도록 한다.Therefore, when the COG and LDG exceeding the storage capacity of the COG holder 22 and the LDG holder 32 are generated, the computer 50 opens the COG open / close valve 26 and the LDG open / close valve 36. The COG and LDG exceeding the storage capacity may be introduced into the BFG holder 12 through the COG moving pipe 24 and the LDG moving pipe 34, respectively.

상기 BFG홀더(12)는 대용량이기 때문에 전용 홀더의 용량을 초과하는 COG나 LDG의 초과분을 수용하기에 충분한 여유 공간을 항상 확보하고 있다.Since the BFG holder 12 has a large capacity, sufficient space is always secured to accommodate an excess of COG or LDG exceeding the capacity of the dedicated holder.

따라서, COG와 LDG의 대기 방산을 방지하여 부생가스의 방산량을 감소시킬 수 있게 된다.Therefore, it is possible to prevent the emission of COG and LDG to the air to reduce the amount of by-product gas dissipation.

한편, 상기와 같이 COG와 LDG를 BFG홀더(12)로 유입시켰을 경우, BFG홀더(12)로부터 발전소(40)로 공급되는 부생가스는 순수 BFG가 아닌 BFG와 COG 및 LDG의 혼합가스로서 그 열량 또한 순수 BFG와는 상이하다.On the other hand, when COG and LDG are introduced into the BFG holder 12 as described above, the by-product gas supplied from the BFG holder 12 to the power plant 40 is a mixed gas of BFG, COG and LDG, not pure BFG. It is also different from pure BFG.

따라서, 상기 에너지센터의 컴퓨터(50)는 상기 혼합가스의 열량(각 홀더 또는 홀더의 출구에는 열량계가 설치되어 있다.)정보를 상기 발전소(40)로 전송하여, 발전소(40)에서 공급될 연료가스의 열량정보를 미리 알고 적절한 연소제어를 실시할 수 있도록 한다.
Therefore, the computer 50 of the energy center transmits the calorific value (the calorimeter is installed at each holder or the outlet of the holder) of the mixed gas to the power plant 40 to supply the fuel to be supplied from the power plant 40. It is possible to know the calorie information of the gas in advance and to perform appropriate combustion control.

이제, 도 2를 참조하여 본 발명에 따른 부생가스 방산 감소 방법을 설명한다.Now, the by-product gas dispersion reduction method according to the present invention will be described with reference to FIG.

도 2에 도시된 바와 같이 본 발명에 따른 부생가스 방산 감소 방법은, COG와 LDG가 전용의 홀더 즉, COG홀더(22)와 LDG홀더(32)에 저장될 수 있는지의 여부를 판단하는 부생가스 저장가능여부 판단단계(S10)와, 상기 부생가스 저장가능여부 판단단계(S10)에서 COG와 LDG가 각각 COG홀더(22)와 LDG홀더(32)에 저장될 수 없는 것으로 판단되면 상기 COG와 LDG를 BFG홀더(12)로 유입시키는 COG와 LDG의 BFG홀더 유입단계(S20) 및 상기 BFG홀더(12)내의 혼합가스를 발전소(40)로 공급하는 혼합가스 공급단계(S30)를 포함한다.As shown in FIG. 2, the by-product gas emission reduction method according to the present invention is a by-product gas for determining whether COG and LDG can be stored in a dedicated holder, that is, COG holder 22 and LDG holder 32. If it is determined that the storage can be stored in the COG holder and the LDG holder 32 and the COG and LDG in step (S10), and whether the by-product gas can be stored (S10), respectively, the COG and LDG And a mixed gas supply step (S30) of supplying the mixed gas in the BFG holder (S20) and the mixed gas in the BFG holder (12) of the COG and LDG to flow into the BFG holder (12).

상기 부생가스 저장가능여부 판단단계(S10)은 COG와 LDG의 발생량을 체크하는 부생가스 발생량 체크단계(S11)와, COG홀더(22)와 LDG홀더(32)의 현재 가스 충전량을 체크하는 가스홀더 충전량 체크단계(S12)와, 상기 부생가스 발생량 체크단계(S11)와 가스홀더 충전량 체크단계(S12)를 통해 알게 된 COG 및 LDG의 발생량과 해당 홀더의 추가 저장 가능 용량을 비교하는 부생가스 발생량과 해당 홀더의 추가 저장 가능 용량 비교단계(S13)으로 이루어진다.The step of determining whether the by-product gas can be stored (S10) is a by-product gas generation amount checking step (S11) for checking the generation amount of the COG and LDG, and a gas holder for checking the current gas filling amount of the COG holder 22 and the LDG holder 32 By-product gas generation amount comparing the generation amount of COG and LDG found through the filling amount checking step (S12), the by-product gas generation amount checking step (S11) and the gas holder filling amount checking step (S12) and the additional storage capacity of the holder and An additional storage capacity comparison step (S13) of the holder is performed.

즉, 상기 부생가스 발생량과 해당 홀더의 추가 저장 가능 용량 비교단계(S13)에서 COG와 LDG의 발생량과 각각의 해당 홀더 즉, COG홀더(22)와 LDG홀더(32)의 추가 저장 가능 용량을 비교하여 COG와 DLG의 발생량이 각 해당 홀더의 추가 저장 가능 용량 보다 큰 것으로 판단되면 상기 COG와 LDG를 상기 BFG홀더(12)로 이동시키는 상기 COG와 LDG의 BFG홀더 유입단계(S20)를 수행한다.That is, the generation amount of COG and LDG and the additional storage capacity of the corresponding holders, that is, the COG holder 22 and the LDG holder 32 are compared in the step of generating the by-product gas and the additional storage capacity of the holder (S13). When it is determined that the generation amount of COG and DLG is larger than the additional storage capacity of the corresponding holder, the COG and LDG BFG holder inflow step (S20) of moving the COG and LDG to the BFG holder 12 is performed.

상기 COG와 LDG의 BFG홀더 유입단계(S20) 수행 결과, 상기 BFG홀더(12)에는 BFG와 COG 및 LDG의 혼합가스가 존재하게 되고, 그 혼합가스는 상기 혼합가스 공급단계(S30)를 통해 BFG홀더(12)에서 발전소(40)로 공급된다.As a result of performing the BFG holder inflow step (S20) of the COG and LDG, the mixed gas of BFG, COG and LDG is present in the BFG holder 12, the mixed gas is BFG through the mixed gas supply step (S30) It is supplied from the holder 12 to the power plant 40.

따라서, 발전소(40)는 상기 혼합가스를 연료로 발전하여 제철소내 필요한 전기를 생산한다.Therefore, the power plant 40 generates the electricity required in the steelworks by generating the mixed gas as fuel.

한편, 발전소(40)에서는 연료의 효율적인 연소와 발전소의 원활한 운전을 위해 연료로 공급되는 가스의 열량 정보를 사전에 알아야 한다.On the other hand, in the power plant 40, it is necessary to know in advance the calorie information of the gas supplied to the fuel for efficient combustion of the fuel and smooth operation of the power plant.

따라서, 본 발명은 상기 혼합가스 공급단계(S30) 이전에 혼합가스의 열량정보를 상기 발전소(40)로 미리 전송하는 혼합가스 열량정보 전송단계(S40)를 더 포함한다.Therefore, the present invention further includes a mixed gas calorie information transmitting step S40 of previously transmitting the calorie information of the mixed gas to the power plant 40 before the mixed gas supplying step S30.

따라서, 발전소는 상기 BFG홀더(12)로부터 BFG, COG, LDG가 혼합된 혼합가스를 공급받는 경우에도 원활한 연소제어를 통해 효율적인 전기 생산을 도모할 수 있게 된다.Therefore, the power plant can achieve efficient electricity production through smooth combustion control even when the mixed gas mixed with BFG, COG, and LDG is supplied from the BFG holder 12.

한편, 상기 부생가스 발생량과 해당 홀더의 추가저장 가능용량 비교단계(S13)에서 COG, LDG발생량보다 해당 홀더의 추가 저장 용량이 커서 발생한 COG와 LDG가 각각의 홀더에 저장 가능한 것으로 판단되면, 발생한 COG와 LDG는 각각 해당 홀더에 저장된다.On the other hand, in the step of comparing the by-product gas generation amount and the additional storage capacity of the holder (S13), if the additional storage capacity of the holder is larger than the COG and LDG generation amount, it is determined that the generated COG and LDG can be stored in each holder, the generated COG And LDG are stored in the respective holders.

상기와 같이, 본 발명에 따른 부생가스 방산 감소 방법에 따르면, COG와 LDG가 어떤 시점에서 급격하게 발생량이 증가하더라도 대기중으로 방산하지 않고, 여유공간이 충분한 BFG홀더(12)로 유입시켜 보관할 수 있게 된다.As described above, according to the by-product gas emission reduction method according to the present invention, even if the amount of COG and LDG is suddenly increased at any point does not dissipate into the atmosphere, it is possible to flow into the BFG holder 12 with sufficient free space to be stored. do.

따라서, 부생가스의 대기 방산량이 감소되고, 그 감소분 만큼 제철소의 연료 또는 각 필요 공정에서 사용할 수 있게 되므로 제철소의 에너지 활용 효율이 향상된다.Therefore, the amount of off-gas release of the by-product gas is reduced, and the amount of the by-product gas can be used in the steel mill's fuel or each necessary process, thereby improving the energy utilization efficiency of the steel mill.

10 : 고로 12 : BFG홀더
20 : 코크스로 22 : COG홀더
24 : COG이동배관 26 : COG개폐밸브
30 : 전로 32 : LDG홀더
34 : LDG이동배관 36 : LDG개폐밸브
40 : 발전소 50 : 에너지센터의 컴퓨터10: blast furnace 12: BFG holder
20: coke oven 22: COG holder
24: COG movement piping 26: COG opening and closing valve
30: converter 32: LDG holder
34: LDG moving piping 36: LDG opening and closing valve
40: power plant 50: energy center computer

Claims (5)

BFG가 저장되는 BFG홀더와;
COG가 저장되는 COG홀더와;
LDG가 저장되는 LDG홀더와;
상기 BFG홀더와 COG홀더의 사이 및 상기 BFG홀더와 LDG홀더의 사이에 각각 연결되는 COG이동배관과 LDG이동배관;
상기 COG이동배관과 LDG이동배관 각각에 설치된 COG개폐밸브와 LDG개폐밸브 및;
상기 COG홀더, LDG홀더로 유입되는 COG와 LDG 양에 따라 상기 COG개폐밸브와 LDG개폐밸브를 개폐 제어하는 에너지센터의 컴퓨터;
를 포함하는 제철소의 부생가스 방산 감소 장치.A BFG holder in which the BFG is stored;
A COG holder in which COG is stored;
An LDG holder in which an LDG is stored;
A COG moving pipe and an LDG moving pipe connected between the BFG holder and the COG holder and between the BFG holder and the LDG holder, respectively;
A COG open / close valve and an LDG open / close valve installed on each of the COG moving pipe and the LDG moving pipe;
A computer in the energy center for opening and closing the COG open / close valve and the LDG open / close valve according to the amount of COG and LDG flowing into the COG holder and the LDG holder;
Off-gas emission reduction device of the steel mill comprising a. 청구항 1에 있어서,
상기 에너지센터의 컴퓨터는 상기 BFG홀더내 혼합가스의 열량 정보를 상기 발전소에 전송하는 것을 특징으로 하는 제철소의 부생가스 방산 감소 장치.The method according to claim 1,
The computer of the energy center is a by-product gas emission reduction device of a steel mill, characterized in that for transmitting the heat information of the mixed gas in the BFG holder to the power plant. COG와 LDG가 각각 COG홀더와 LDG홀더에 저장될 수 있는지의 여부를 판단하는 부생가스 저장가능여부 판단단계와;
상기 부생가스 저장가능여부 판단단계에서 COG와 LDG가 각각 COG홀더와 LDG홀더에 저장될 수 없는 것으로 판단되면 상기 COG와 LDG를 BFG홀더로 유입시키는 COG와 LDG의 BFG홀더 유입단계 및;
상기 BFG홀더내의 혼합가스를 발전소로 공급하는 혼합가스 공급단계를 포함하는 제철소의 부생가스 방산 감소 방법.Determining whether the by-product gas can be stored whether or not the COG and the LDG can be stored in the COG holder and the LDG holder, respectively;
In the step of determining whether COG and LDG cannot be stored in the COG holder and the LDG holder, respectively, in the step of determining whether the by-product gas can be stored;
By-product gas emission reduction method of the steel mill comprising a mixed gas supply step of supplying the mixed gas in the BFG holder to the power plant. 청구항 3에 있어서,
상기 부생가스 저장가능여부 판단단계는 COG와 LDG의 발생량을 체크하는 부생가스 발생량 체크단계와,
상기 COG홀더와 LDG홀더의 현재 가스 충전량을 체크하는 가스홀더 충전량 체크단계와,
상기 COG 및 LDG의 발생량과 해당 홀더의 추가 저장 가능 용량을 비교하는 부생가스 발생량과 해당 홀더의 추가 저장 가능 용량 비교단계
를 포함하는 것을 특징으로 하는 제철소의 부생가스 방산 감소 방법.The method according to claim 3,
The step of determining whether the by-product gas can be stored is a by-product gas generation check step of checking the generation amount of the COG and LDG;
A gas holder filling amount checking step of checking a current gas filling amount of the COG holder and the LDG holder;
Comparing the by-product gas generation amount and the additional storage capacity of the holder to compare the generation amount of the COG and LDG and the additional storage capacity of the holder
By-product gas emission reduction method of a steel mill comprising a. 청구항 3에 있어서,
상기 혼합가스 공급단계 이전에 혼합가스의 열량정보를 상기 발전소로 미리 전송하는 혼합가스 열량정보 전송단계를 더 포함하는 것을 특징으로 하는 제철소의 부생가스 방산 감소 방법.
The method according to claim 3,
A method for reducing by-product gas emission of a steel mill further comprising the step of transmitting mixed gas calorie information beforehand before the mixed gas supplying step.
KR1020100083921A 2010-08-30 2010-08-30 apparatus and method for decreasing diffusion of by-product gas in ironworks KR101193776B1 (en)

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Publication number Priority date Publication date Assignee Title
CN103305645A (en) * 2013-07-11 2013-09-18 重庆钢铁(集团)有限责任公司 Blast furnace gas purification system
KR20220088089A (en) * 2020-12-18 2022-06-27 현대제철 주식회사 Mixing transfer system for byproduct gas and its control method

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JP2004239515A (en) 2003-02-06 2004-08-26 Jfe Steel Kk Utilization method of gasification fusion furnace gas
JP5309893B2 (en) 2008-10-28 2013-10-09 Ｊｆｅスチール株式会社 By-product gas holder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103305645A (en) * 2013-07-11 2013-09-18 重庆钢铁(集团)有限责任公司 Blast furnace gas purification system
KR20220088089A (en) * 2020-12-18 2022-06-27 현대제철 주식회사 Mixing transfer system for byproduct gas and its control method

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