KR20020032864A - Method for controlling top gas pressure of blast furnace in top gas recuperation power - Google Patents

Method for controlling top gas pressure of blast furnace in top gas recuperation power Download PDF

Info

Publication number
KR20020032864A
KR20020032864A KR1020000063580A KR20000063580A KR20020032864A KR 20020032864 A KR20020032864 A KR 20020032864A KR 1020000063580 A KR1020000063580 A KR 1020000063580A KR 20000063580 A KR20000063580 A KR 20000063580A KR 20020032864 A KR20020032864 A KR 20020032864A
Authority
KR
South Korea
Prior art keywords
pressure
shear
top gas
controlling
shear pressure
Prior art date
Application number
KR1020000063580A
Other languages
Korean (ko)
Other versions
KR100433341B1 (en
Inventor
정래진
장필선
황원하
김재식
Original Assignee
이구택
주식회사 포스코
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이구택, 주식회사 포스코 filed Critical 이구택
Priority to KR10-2000-0063580A priority Critical patent/KR100433341B1/en
Publication of KR20020032864A publication Critical patent/KR20020032864A/en
Application granted granted Critical
Publication of KR100433341B1 publication Critical patent/KR100433341B1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/007—Controlling or regulating of the top pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Control Of Turbines (AREA)

Abstract

PURPOSE: A method for controlling top gas pressure of a blast furnace in a top gas recovery plant is provided which stabilizes the top gas pressure by constantly maintaining a shear pressure set value and changing a differential pressure. CONSTITUTION: The method for controlling top gas pressure of a blast furnace in a top gas recovery plant comprises the processes of setting a shear pressure to be maintained by being closely connected with a differential pressure signal generator(22) at a shear pressure controller(C2) when an initial top gas pressure is set at a top gas pressure setter(10); controlling a differential pressure which is a difference between a variation width of a top gas pressure according to the change and a set shear pressure so that the differential pressure is maintained to the set shear pressure value by opening or closing a bypass control valve and a turbine control valve after the shear pressure controller(C2) detects a change of the shear pressure by communicating with a shear pressure signal generator; and directly opening a bypass valve by controlling an interlock transmitter(40) through a monitoring shear pressure transmitter(32) when a shear pressure is rapidly increased during the controlling process.

Description

노정압 발전기에서 노정압력 제어방법{METHOD FOR CONTROLLING TOP GAS PRESSURE OF BLAST FURNACE IN TOP GAS RECUPERATION POWER}TECHNICAL FOR CONTROLLING TOP GAS PRESSURE OF BLAST FURNACE IN TOP GAS RECUPERATION POWER}

본 발명은 용광로에서 발생되는 고로가스의 압력을 이용하여 최고 14,300kW의 전력을 생산하도록 설치된 노정압 발전기에서 전력생산 이외에도 고로 조업의 핵심요소인 노정압력을 용이하게 안정화시킬 수 있도록 한 노정압 발전기에서 노정압력 제어방법에 관한 것이다.The present invention, in the static pressure generator installed to produce up to 14,300 kW of power by using the pressure of the blast furnace gas generated in the furnace in a static pressure generator that can easily stabilize the top pressure which is a key element of the blast furnace operation in addition to the power production The present invention relates to a method of controlling the top pressure.

일반적으로, 고압 조업을 하는 용광로 설비에는 고로에서 배출된 고온, 고압의 고로가스로를 이용하여 고로가스가 보유한 에너지를 전력으로 변환 생산할 수 있도록 터빈을 갖춘 노정압 발전기가 설치되어 있다.In general, the furnace equipment for high pressure operation is equipped with a static pressure generator equipped with a turbine to convert the energy of the blast furnace gas into electric power by using the high temperature, high pressure blast furnace gas furnace discharged from the blast furnace.

이러한 노정압 발전기는 도 1의 도시와 같은 계통을 통해 전력을 생산하게 되는 바, 용광로(1) 상부(노정)에서 배출된 고온, 고압의 가스는 다량의 더스트를 함유하고 있어 건식더스트포집기(2)에서 1차 제진한 후 습식더스트포집기(3)에서 2차 제진된다.The stationary pressure generator is to produce power through the system as shown in Figure 1 bar, the high-temperature, high-pressure gas discharged from the upper part (furnace) of the furnace (1) contains a large amount of dust dry dust collector (2 After the first vibration damping at), the second dust is damped at the wet dust collector 3.

이어, 2차 제진된 가스는 노정압제어기(C1)와 연결된 비숍콘(3a)에 의해 노정압(고로 상부의 압력)이 제어되고, 노정압발전기(4)의 전단압력제어기(C2)에서 전단압력 신호발신기(3b)의 압력을 받아 바이패스콘트롤밸브(5a)와 터빈콘트롤밸브(4c)를 통해 전단압력을 제어한 후 발전기터빈(4a)을 회전시켜 전력을 발생시킨 후 가스홀더에 저장되어 연료로 재사용되게 된다.Subsequently, the secondary damped gas is controlled by the bishop cone 3a connected to the stationary pressure controller C1 to control the stationary pressure (pressure at the upper part of the blast furnace), and sheared at the shear pressure controller C2 of the stationary pressure generator 4. After controlling the shear pressure through the bypass control valve 5a and the turbine control valve 4c by receiving the pressure of the pressure signal transmitter 3b, the generator turbine 4a is rotated to generate electric power and then stored in the gas holder. It will be reused as fuel.

이러한 발전과정중 고로의 중요 제어요소인 노정압력(2.55~2.65 Kg/cm2)을 제어하기 위하여 노정압발전기(4)의 전단압력을 터빈콘트롤밸브(4c)와 바이패스콘트롤밸브(5a)가 일정하게 압력을 제어(2.0 Kg/cm2)하면서 발전기터빈(4a)을 회전시켜 전력(14.3MW)을 생산하게 되는데, 소음이 심하고 발전기의 전단압력 제어가 불량하여 전단압력이 상승할 경우 노정압력이 동시에 동반 상승하면서 용광로 취발(노내가스가 장입물의 취약한 일부를 뚫고 급상승하면서 프로파일을 뒤집어 놓은 현상) 발생 및 이에 따른 감풍, 휴풍사고, 설비의 가동률 저하에 따른 고로의 생산성저하를 유발하게 된다.In order to control the top pressure (2.55 ~ 2.65 Kg / cm 2 ), which is an important control element of the blast furnace, the shear pressure of the top pressure generator 4 is controlled by the turbine control valve 4c and the bypass control valve 5a. Constantly controlling the pressure (2.0 Kg / cm 2 ) while rotating the generator turbine (4a) to produce electric power (14.3MW), if the shear pressure rises due to the high noise and poor control of the shear pressure of the generator At the same time, the rise of the furnace will cause the blast furnace to be blown out (a phenomenon in which the furnace gas rises through the vulnerable part of the charge and inverts the profile), resulting in gusts, fall-off accidents, and deterioration of the blast furnace.

즉, 발전기의 전단압력 제어를 위한 설정값은 운전자가 차압(약 0.6 Kg/cm2)을 설정하면 노정압력 설정치(2.55~2.65 Kg/cm2)에서 차압을 제외한 나머지가 발전기의 전단압력 신호발신기(3b)의 설정치로 되게 된다.That is, if the driver sets the differential pressure (approximately 0.6 Kg / cm 2 ), the set value for the shear pressure control of the generator is the shear pressure signal transmitter of the generator except for the differential pressure from the settling pressure set value (2.55 ~ 2.65 Kg / cm 2 ). It becomes the set value of (3b).

이렇게 됨으로써, 후단 압력은 노정압력이 변경될 때마다 같이 변경되게 되어 전단압력이 떨어져 노정압력 제어가 불량하고 발전량이 감소하게 되는 바, 예컨대 압력 0.1 Kg/cm2이하시 40MW/DAY 발전량이 감소되게 된다.As a result, the rear end pressure is changed every time the top pressure is changed so that the front end pressure falls and the top pressure control is poor and the amount of power generation is reduced. For example, when the pressure is 0.1 Kg / cm 2 or less, 40MW / DAY generation amount is reduced. do.

또한, 전단압력 제어과정에서 압력설정치보다 노정압 제어기값이 0.3 Kg/cm2이상 높을 경우와 바이패스콘트롤밸브(5a)가 80% 이상 열림시 제어 한계점 이상으로 노정압이 상승되기 때문에 바이패스밸브(5)가 개방되게 됨으로써 노정압의 상승은 방지하지만, 압력제어 검출발신기의 검출단이 막히거나 발신기 불량시 검출신호가 현재의 노정압 제어기값보다 적은값이 제어장치에 입력됨으로써 제어밸브, 즉 터빈콘트롤밸브(4c), 바이패스콘트롤밸브(5a)는 목표치에 도달하기위해 닫히게 되므로 실제적으로 전단압력은 급상승되고 있으나 바이패스밸브(5)는 열리지 않게되어 노정압이 계속 상승하면서 노내취발을 초래하게 된다.In addition, the bypass valve increases when the static pressure controller value is 0.3 Kg / cm 2 or more higher than the pressure set value in the shear pressure control process and when the bypass control valve 5a is opened by 80% or more, the static pressure rises above the control limit point. (5) is opened to prevent the rise of the nominal pressure, but when the detection stage of the pressure control detecting transmitter is blocked or the transmitter is defective, a value less than the present nominal pressure controller value is input to the control device so as to control the valve. Since the turbine control valve 4c and the bypass control valve 5a are closed to reach the target value, the shear pressure is actually rising rapidly, but the bypass valve 5 is not opened, and the top pressure continues to rise so Will result.

뿐만 아니라, 발전기 전단압력 제어기의 검출단이 습식더스트포집기(3)의 출구 상부에 설치되어 있어 고로 가스가 비숍콘(3a)을 통과 후 습식더스트포집기(3)를 빠져나가면서 수분 및 더스트가 다량으로 검출단에 인입되어 검출값에 오류를 초래하게 된다.In addition, the detection stage of the generator shear pressure controller is installed in the upper part of the outlet of the wet dust collector (3), so that the blast furnace gas passes through the bishopcon (3a) and then exits the wet dust collector (3). Is introduced into the detection stage, causing an error in the detection value.

본 발명은 상술한 바와 같은 종래 기술이 갖는 제반 문제점을 감안하여 이를 해결하고자 창출한 것으로, 전단압 설정값을 일정하게 하고 차압이 변하도록 하여 노정압이 변하더라도 전단압력보다 노정압이 낮아지는 것을 방지토록 함으로써 노정압의 급상승에 따른 노내 취발현상과 같이 고로에 악영향을 미치는 요인들을 제거하여 노정압력을 안정화시킬 수 있도록 한 노정압발전기에서 노정압력 제어방법을 제공함에 그 목적이 있다.The present invention has been made in view of the above-mentioned problems in the prior art, and it was created to solve the above problem, and the shear pressure is lower than the shear pressure even if the static pressure changes by setting the shear pressure constant and changing the differential pressure. The purpose of the present invention is to provide a method of controlling the pressure of a top pressure generator in a top pressure generator that stabilizes the top pressure by removing the factors that adversely affect the blast furnace, such as the intake of the furnace due to the rapid rise of the top pressure.

본 발명의 상기한 목적은 노정압설정기에서 최초 노정압이 설정되면 전단압력제어기에서 차압신호발생기와 연계하여 유지할 전단압력을 설정하는 과정과; 상기 전단압력제어기는 전단압력신호발신기와 교신하여 전단압력의 변화를 검출하고 그 변화에 따른 노정압의 변동폭과 설정된 전단압과의 차이인 차압을 바이패스컨트롤밸브 및 터빈컨트롤밸브를 개폐제어하여 전단압력이 설정된 값으로 유지되도록 조절하는 과정과; 상기 조절과정중 전단압이 급상승하게 되면 감시용 전단압력발신기를 통해 인터록발신기를 제어하여 바이패스밸브를 직접 개방시키도록 하는 과정을 포함하여 구성함에 의해 달성된다.The above object of the present invention comprises the steps of setting the shear pressure to be maintained in connection with the differential pressure signal generator in the shear pressure controller when the initial static pressure is set in the static pressure setter; The shear pressure controller communicates with the shear pressure signal transmitter to detect the change in the shear pressure and to open and close the bypass control valve and the turbine control valve to control the differential pressure, which is the difference between the fluctuation range of the stationary pressure and the set shear pressure according to the change. Adjusting the pressure to maintain a set value; When the shear pressure rises rapidly during the adjustment process, the interlock transmitter is controlled by the monitoring shear pressure transmitter to directly open the bypass valve.

도 1은 종래 기술에 따른 노정압 제어과정을 개략적으로 도시한 모식도,1 is a schematic diagram schematically showing a static pressure control process according to the prior art,

도 2는 본 발명에 따른 노정압 제어과정을 개략적으로 도시한 모식도,2 is a schematic diagram schematically showing a process for controlling the static pressure according to the present invention;

도 3은 본 발명에 따른 노정압 제어방법을 설명하기 위한 구성을 개략적으로 보인 블럭도.Figure 3 is a block diagram schematically showing a configuration for explaining the static pressure control method according to the present invention.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10 : 노정압설정기, 20 : 차압설정기,10: static pressure setter, 20: differential pressure setter,

22 : 차압신호발신기, 24 : 차압출력기,22: differential pressure signal transmitter, 24: differential pressure output,

30 : 전단압력입력기, 40 : 인터록발신기,30: shear pressure input device, 40: interlock transmitter,

C1 : 노정압제어기, C2 : 전단압력제어기.C1: static pressure controller, C2: shear pressure controller.

이하에서는, 본 발명에 따른 바람직한 일 실시예를 첨부도면에 의거하여 보다 상세하게 설명한다.Hereinafter, a preferred embodiment according to the present invention will be described in more detail on the basis of the accompanying drawings.

도 2는 본 발명에 따른 노정압력 제어계통을 개략적으로 도시한 구성도이고, 도 3은 본 발명에 따른 노정압력 제어를 위한 구성을 보인 블럭도이다.Figure 2 is a schematic view showing a notch pressure control system according to the present invention, Figure 3 is a block diagram showing a configuration for the notch pressure control according to the present invention.

도 2 내지 도 3에 따르면, 노정압을 설정하는 노정압설정기(10)와 발전기의 전단압력제어기(C2) 사이에 노정압과 전단압간의 차이인 차압을 설정하거나 변경 제어할 수 있는 차압설정기(20)가 설치된다.2 to 3, a differential pressure setter capable of setting or changing control of a differential pressure, which is a difference between the static pressure and the shear pressure, between the static pressure setter 10 for setting the static pressure and the shear pressure controller C2 of the generator. 20 is installed.

그리하여, 발전기의 전단압력은 항상 일정하게 유지한 채 차압을 조절함으로써 노정압력을 안정화시킬 수 있도록 한 것이다.Thus, the shear pressure of the generator is kept constant at all times so that the top pressure can be stabilized by adjusting the differential pressure.

즉, 기존에는 노정압의 변동을 전단압력을 변화시켜 조절하였던 것에 반해 본 발명에서는 노정압의 변동을 노정압의 변동분에 대응하는 차압을 발생시키고 대신 발전기의 전단압력은 항상 일정하게 유지되도록 한 것이다.In other words, in the present invention, the fluctuation of the nodal pressure is controlled by changing the shear pressure, whereas in the present invention, the fluctuation of the nodal pressure generates a differential pressure corresponding to the fluctuation of the nodal pressure, and instead, the shear pressure of the generator is always kept constant. .

이를 위해, 차압설정기(20)와 연결된 차압신호발생기(22) 및 차압출력기(24)가 부설되고, 정해진 압력의 변동범위 내로 항상 조절하기 위한 인터록발신기(40)가 구비된다.To this end, the differential pressure signal generator 22 and the differential pressure output device 24 connected to the differential pressure setter 20 are installed, and the interlock transmitter 40 is always provided to adjust the pressure within the range of the predetermined pressure.

차압신호발생기(22)는 노정압설정기(10)와 연결되어 있으며, 또한 발전기의 전단압력제어기(C2)와 연결된다.The differential pressure signal generator 22 is connected to the static pressure setter 10 and is also connected to the shear pressure controller C2 of the generator.

전단압력제어기(C2)에는 전단압력을 설정할 수 있는 전단압력입력기(30)가 연결된다.Shear pressure controller (C2) is connected to the shear pressure input unit 30 that can set the shear pressure.

아울러, 차압출력기(24)는 차압신호발생기(22)로부터 신호를 받아 인터록발생기(40)에 전달할 수 있도록 이들을 연결하며, 상기 인터록발생기(40)는 바이패스밸브(5)를 직접 개폐제어할 수 있도록 설치된다.In addition, the differential pressure output unit 24 receives the signals from the differential pressure signal generator 22 and connects them to the interlock generator 40 so that the interlock generator 40 can directly control the opening and closing of the bypass valve 5. To be installed.

바이패스컨트롤밸브(5a)와 터빈컨트롤밸브(4c)는 전단압력제어기(C2)에 의해 직접 제어된다.The bypass control valve 5a and the turbine control valve 4c are directly controlled by the shear pressure controller C2.

아울러, 노정압의 급상승에 따른 문제에 대처하기 위해 노정압의 급격한 변동을 감지하여 신속하게 인터록(INTERLOOK)할 수 있는 감시용 전단압력발신기(32)가 터빈컨트롤밸브(4c)의 선단에 구비된다.In addition, in order to cope with the problems caused by the sudden rise of the nodal pressure, a monitoring shear pressure transmitter 32 capable of quickly interlocking by detecting a sudden change of the nodal pressure is provided at the tip of the turbine control valve 4c. .

이러한 구성으로 이루어진 본 발명의 제어방법은 상술한 도면을 참조하여 설명한다.The control method of the present invention having such a configuration will be described with reference to the drawings described above.

먼저, 노정압설정기(10)를 통해 노정압을 설정한 후 노정압제어기(C1)로 비숍콘(3a)을 이용하여 노정압을 제어하게 된다.First, after setting the static pressure through the static pressure setter 10, the static pressure controller C1 is used to control the static pressure using the bishop cone 3a.

발전기의 전단압에 의해 노정압이 변하게 되면, 차압설정기(20)를 통해 차압을 설정하여 노정압의 안정을 꾀하도록 하는 바, 발전기의 전단압력입력기(30)를 통해 설정압, 즉 일정하게 유지하여야 할 전단압력을 설정한 후 전단압력제어기(C2)를 통해 전단압이 일정하게 유지되도록 제어토록 한다.When the stationary pressure is changed by the shear pressure of the generator, the differential pressure is set through the differential pressure setter 20 to stabilize the stationary pressure. The preset pressure through the shear pressure input unit 30 of the generator, that is, constant After setting the shear pressure to be maintained, the shear pressure controller (C2) is controlled so that the shear pressure is kept constant.

이를 위해, 발전기의 전단에 전단압의 변화를 검출하여 신호를 송출하는 전단압력신호발신기(3b)를 설치하고 이를 전단압력제어기(C2)에 연결한다.To this end, a shear pressure signal transmitter 3b for detecting a change in shear pressure and transmitting a signal to a front end of the generator is installed and connected to the shear pressure controller C2.

검출결과에 따라 바이패스컨트롤밸브(5a) 및 터빈컨트롤밸브(4c)를 적정하게 개폐제어하여 전단압력이 항상 설정된 값으로 일정하게 유지되도록 하여 준다.According to the detection result, the bypass control valve 5a and the turbine control valve 4c are appropriately opened and closed so that the shear pressure is always kept at a predetermined value.

이때, 상기 전단압력제어기(C2)는 설정된 차압이 노정압의 변동에 따라 변동되므로 그 변동된 차압값에 따라 상기 밸브(5a,4c)의 개도량을 조절함으로서 전단압력을 일정하게 설정된 압력으로 유지할 수 있게 된다.At this time, the shear pressure controller C2 maintains the shear pressure at a constant set pressure by adjusting the opening amount of the valves 5a and 4c according to the changed differential pressure value since the set differential pressure is changed according to the change of the stationary pressure. It becomes possible.

만약, 전단압력신호발신기(3b)의 이상으로 검출신호가 차압보다 적은값으로 입력되어 양 밸브(5a,4c)가 목표치에 도달하도록 폐쇄되는 오동작이 발생됨으로서 실제적으로 전단압이 급상승하게 될 경우에는 노정압이 급격히 상승하게 되는 바, 예컨대 설정된 전단압보다 0.33kg/cm2이상일 때에는 감시용 전단압력발신기(32)가 즉시 작동하여 인터록발신기(40)에 신호를 줌으로써 바이패스밸브(5)를 즉시에 직접 개방함으로써 노정압 및 전단압의 급상승을 방지하게 된다.If the shear signal rises substantially due to an abnormality in the shear pressure signal transmitter 3b, the detection signal is input at a value less than the differential pressure and the valves 5a and 4c are closed to reach the target value. When the top pressure rises sharply, for example, 0.33 kg / cm 2 or more than the set shear pressure, the monitoring shear pressure transmitter 32 immediately operates to signal the interlock transmitter 40 to immediately open the bypass valve 5. Opening directly to prevents rapid rise of the stationary and shear pressures.

이상에서 상세히 설명한 바와 같이, 본 발명은 노정압의 변동에 대응되게 전단압을 변동시켜 노정압이 안정화되도록 제어하던 기존과는 달리 노정압의 변동과는 무관하게 전단압은 일정하게 유지시키면서 설정된 전단압과 노정압의 차압변동을 각 밸브를 제어하여 해당 차압만큼을 제거시킴으로써 노정압의 안정화는 물론 전단압의 안정화도 꾀할 수 있도록 한 유용한 발명이다.As described in detail above, the present invention is a shear set while maintaining the shear pressure constant irrespective of the fluctuation of the stationary pressure, unlike the conventional control that the shear pressure is stabilized by varying the shear pressure corresponding to the fluctuation of the stationary pressure The differential pressure fluctuations of the pressure and the nominal pressure are controlled by the respective valves, thereby removing the corresponding differential pressure, thereby making it possible to stabilize not only the static pressure but also the shear pressure.

Claims (1)

노정압설정기(10)에서 최초 노정압이 설정되면 전단압력제어기(C2)에서 차압신호발생기(22)와 연계하여 유지할 전단압력을 설정하는 과정과;Setting the shear pressure to be maintained in connection with the differential pressure signal generator 22 in the shear pressure controller C2 when the initial static pressure is set in the stall pressure setter 10; 상기 전단압력제어기(C2)는 전단압력신호발신기(3b)와 교신하여 전단압력의 변화를 검출하고 그 변화에 따른 노정압의 변동폭과 설정된 전단압과의 차이인 차압을 바이패스컨트롤밸브(5a) 및 터빈컨트롤밸브(4c)를 개폐제어하여 전단압력이 설정된 값으로 유지되도록 조절하는 과정과;The shear pressure controller C2 communicates with the shear pressure signal transmitter 3b to detect a change in the shear pressure, and bypass the differential pressure which is the difference between the fluctuation range of the stationary pressure and the set shear pressure according to the change of the bypass control valve 5a. And controlling the opening and closing control of the turbine control valve 4c to maintain the shear pressure at a set value. 상기 조절과정중 전단압이 급상승하게 되면 감시용 전단압력발신기(32)를 통해 인터록발신기(40)를 제어하여 바이패스밸브(5)를 직접 개방시키도록 하는 과정을 포함하여 이루어지는 것을 특징으로 하는 노정압 발전기에서 노정압력 제어방법.When the shear pressure rises during the adjustment process, the furnace comprising the step of controlling the interlock transmitter 40 through the monitoring shear pressure transmitter 32 to open the bypass valve 5 directly. How to control the stationary pressure in a constant pressure generator.
KR10-2000-0063580A 2000-10-27 2000-10-27 Method for controlling top gas pressure of blast furnace in top gas recuperation power KR100433341B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR10-2000-0063580A KR100433341B1 (en) 2000-10-27 2000-10-27 Method for controlling top gas pressure of blast furnace in top gas recuperation power

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR10-2000-0063580A KR100433341B1 (en) 2000-10-27 2000-10-27 Method for controlling top gas pressure of blast furnace in top gas recuperation power

Publications (2)

Publication Number Publication Date
KR20020032864A true KR20020032864A (en) 2002-05-04
KR100433341B1 KR100433341B1 (en) 2004-05-27

Family

ID=19695840

Family Applications (1)

Application Number Title Priority Date Filing Date
KR10-2000-0063580A KR100433341B1 (en) 2000-10-27 2000-10-27 Method for controlling top gas pressure of blast furnace in top gas recuperation power

Country Status (1)

Country Link
KR (1) KR100433341B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100775500B1 (en) * 2006-12-19 2007-11-12 주식회사 포스코 Apparatus for exhaust forced gas of hydrometallurgy purification equipment
KR100851222B1 (en) * 2002-06-24 2008-08-07 주식회사 포스코 Apparatus for controlling the pressure of the blast furnace
KR100931176B1 (en) * 2002-12-27 2009-12-11 주식회사 포스코 Static pressure control device that compensates for pressure fluctuations caused by charges
KR101323688B1 (en) * 2012-06-15 2013-10-31 주식회사 포스코 Power generator using blast furnace top gas pressure and controlling method thereof
CN109628670A (en) * 2018-12-21 2019-04-16 首钢京唐钢铁联合有限责任公司 A kind of air-supply restoration methods

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS548136A (en) * 1977-06-22 1979-01-22 Koyo Seisakushiyo Kk Welding machine for wires
JPS5625913A (en) * 1979-08-10 1981-03-12 Sumitomo Metal Ind Ltd Control method of top pressure of blast furnace
JPS5625912A (en) * 1979-08-10 1981-03-12 Sumitomo Metal Ind Ltd Controlling method of top pressure of blast furnace
JPS5629604A (en) * 1979-08-17 1981-03-25 Sumitomo Metal Ind Ltd Control of top pressure of blast furnace
JPS5629605A (en) * 1979-08-17 1981-03-25 Sumitomo Metal Ind Ltd Control of top pressure of blast furnace
JPS5629607A (en) * 1979-08-17 1981-03-25 Sumitomo Metal Ind Ltd Control of top pressure of blast surface

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100851222B1 (en) * 2002-06-24 2008-08-07 주식회사 포스코 Apparatus for controlling the pressure of the blast furnace
KR100931176B1 (en) * 2002-12-27 2009-12-11 주식회사 포스코 Static pressure control device that compensates for pressure fluctuations caused by charges
KR100775500B1 (en) * 2006-12-19 2007-11-12 주식회사 포스코 Apparatus for exhaust forced gas of hydrometallurgy purification equipment
KR101323688B1 (en) * 2012-06-15 2013-10-31 주식회사 포스코 Power generator using blast furnace top gas pressure and controlling method thereof
CN109628670A (en) * 2018-12-21 2019-04-16 首钢京唐钢铁联合有限责任公司 A kind of air-supply restoration methods
CN109628670B (en) * 2018-12-21 2020-12-11 首钢京唐钢铁联合有限责任公司 Air supply recovery method

Also Published As

Publication number Publication date
KR100433341B1 (en) 2004-05-27

Similar Documents

Publication Publication Date Title
CN101881224B (en) System and method for automatically turning operation of gas turbine communication
CN102374519B (en) Dynamic tuning of dynamic matrix control of steam temperature
KR100433341B1 (en) Method for controlling top gas pressure of blast furnace in top gas recuperation power
EP0933505B1 (en) Steam cooled system in combined cycle power plant
CN100491548C (en) Method of controlling temperature of high-temperature ring annealing furnace
EP0928882B1 (en) Steam cooling apparatus for gas turbine
JP2585324B2 (en) Gas turbine control method and apparatus
CN102010921A (en) Top pressure automatic control method for bell blast furnace top gas recovery turbine unit (TRT)
JP2578328B2 (en) Output control method for back pressure turbine generator
CN105180138A (en) Control method and system for power station boiler air and flue gas system
CN101008330B (en) Starting method of blast-furnace top gas recovery turbine generator
CN111706406A (en) Quick medium speed warm-up control system
KR100395142B1 (en) Apparatus and method for controlling pressure change on charging hot stove with wind
JP2004052695A (en) Load limiting method for steam turbine
CN111778372B (en) Control method for pressure regulating valve bank of blast furnace top pressure
KR100920642B1 (en) A apparatus for controlling flow volume of hot blast in pulverizer mill
KR20130013615A (en) Apparatus for controlling steam pressure of ironworks installation and control method thereof
JP4090047B2 (en) Boiler combustion control method and combustion control apparatus
JP3564293B2 (en) Method and apparatus for controlling the number of burners in a plant
CN117570469A (en) Combustion monitoring and evaluating method for automatic combustion adjusting system of F-level combustion engine
JPH10103020A (en) Controller and control method for turbine bypass valve in combined plant
CN117308135A (en) Coal mill output control method and device
JP2005127576A (en) Combustion control unit of boiler
JPH08232606A (en) Turbine ground steam pressure controller
KR20040089811A (en) An method for determining automatically pulverized coal supplementary quantity

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
LAPS Lapse due to unpaid annual fee