WO2015012523A1 - 축열식 가열로의 연소 배기 제어장치 및 제어방법 - Google Patents
축열식 가열로의 연소 배기 제어장치 및 제어방법 Download PDFInfo
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- WO2015012523A1 WO2015012523A1 PCT/KR2014/006440 KR2014006440W WO2015012523A1 WO 2015012523 A1 WO2015012523 A1 WO 2015012523A1 KR 2014006440 W KR2014006440 W KR 2014006440W WO 2015012523 A1 WO2015012523 A1 WO 2015012523A1
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- combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/022—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using electronic means
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/52—Methods of heating with flames
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
- F23L15/02—Arrangements of regenerators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any preceding group
- F27B17/0016—Chamber type furnaces
- F27B17/0041—Chamber type furnaces specially adapted for burning bricks or pottery
- F27B17/0075—Heating devices therefor
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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
- F27D19/00—Arrangements of controlling devices
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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
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D21/0014—Devices for monitoring temperature
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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
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0033—Heating elements or systems using burners
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2221/00—Pretreatment or prehandling
- F23N2221/08—Preheating the air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/04—Measuring pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/08—Measuring temperature
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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
- F27D19/00—Arrangements of controlling devices
- F27D2019/0006—Monitoring the characteristics (composition, quantities, temperature, pressure) of at least one of the gases of the kiln atmosphere and using it as a controlling value
- F27D2019/0018—Monitoring the temperature of the atmosphere of the kiln
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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
- F27D19/00—Arrangements of controlling devices
- F27D2019/0028—Regulation
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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
- 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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- 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
- F27D2019/0087—Automatisation of the whole plant or activity
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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
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D2021/0007—Monitoring the pressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Definitions
- the present invention relates to a furnace for heating a material to a forgeable temperature in a forged steel production process, and more particularly, by controlling the emission of fuel, combustion air and combustion exhaust gas of the burner in a regenerative heating furnace using a regenerative combustion burner.
- the pressure in a furnace by combustion gas is adjusted suitably, and it is related with the control method and control apparatus which utilize the whole waste gas for the heat storage of the heat storage body for heat exchange.
- heating furnaces are used to heat materials to the target temperature in the steel production process, and most of them use burners that are fueled by mix gas. Recently, the use of regenerative burners is increasing to save fuel. to be.
- All burners installed in the existing furnace are continuously burned and the exhaust gas generated at this time is recovered through a heat exchanger recuparator.
- the burner itself is provided with a heat accumulator and does not use a separate heat exchanger.
- the burner on one side burns for a predetermined time with two burners corresponding to each other in one set, and the exhaust gas generated at this time is opposed. Is sucked into the burner on the opposite side, and the heat accumulates in the alumina ceramic ball, which is a heat storage body.
- the burner that has been burned is stopped and the counter burner that is accumulating in the heat accumulator starts to combust.
- the combustion air passes through the heat accumulator, the combustion air is preheated to a high temperature.
- the regenerative burner combustion system is composed of a pair of facing burners are continuously replaced with the combustion, and the heat exchange is carried out through the heat accumulator of the burner that was in the non-operation state when the non-operating burner and the operation burner are replaced and operated.
- the heat accumulated by the heat accumulator is transferred to the combustion air, and thus, the combustion device capable of recovering the heat amount of the combustion exhaust gas.
- the energy regeneration burner is burned in two combustion methods according to the furnace temperature of the furnace.
- the furnace temperature is lower than a certain temperature (usually 800-900 ° C.)
- the primary combustion method by the pilot burner is used. If the temperature is higher than 800-900 °C, spontaneous ignition occurs.
- the fuel gas is injected from a separate nozzle and the high temperature combustion air passing through the heat accumulator inside the burner is mixed and ignited in the heating furnace. Combustion method is used.
- the furnace pressure is usually measured near the furnace or at the height of the piled up object, and the value is automatically adjusted through the adjustment damper installed in the exhaust duct so that the value is about 0 to +5 mmH2O.
- fuel gas and combustion air are double cross limit control, and the output of the temperature controller and the cascade control signal of the gas and air volume controller are composed of parallel circuits.
- the upper and lower limits of the respective gas and air ratios are determined by the increase and decrease coefficients so that the amount of air is not excessive or insufficient in the measured value.
- the existing technology uses only 80% of the combustion gas generated during combustion to preheat the combustion air, and discharges 20% of the high temperature combustion gas (1200 to 1250 degrees) into the atmosphere, resulting in energy loss.
- the existing technology requires a separate combustion gas discharge duct to discharge 20% of the combustion gas generated during combustion to the outside, and since the combustion gas temperature is high, a refractory for insulation is separately inside the discharge duct. There is a disadvantage to be installed.
- the present invention uses a 100% exhaust gas of an industrial furnace for the heat exchange necessary for preheating the combustion air, thereby minimizing the energy loss caused by the combustion exhaust gas and controlling the combustion exhaust of the regenerative heating furnace for maximizing the energy saving. To provide.
- the present invention is to provide a combustion exhaust gas control device and control method for a regenerated heating furnace that reuses 20% of the high-temperature combustion gas discharged into the atmosphere for preheating the combustion air, and also controls the gas pressure in the furnace.
- the present invention is to control the discharge of the fuel, combustion air, exhaust gas according to the combustion load of the burner in the furnace using a regenerative burner and the combustion exhaust gas control device and control method for controlling the pressure in the furnace through this To provide.
- regenerative burners (Regenerative Burners) are installed in the furnace and the combustion exhaust gas control method of the regenerative heating furnace configured to control burner combustion amount, fuel and combustion air supplied to the burner, combustion exhaust gas emissions To provide.
- the step of sensing the temperature in the furnace in the temperature sensor in the heating furnace Receiving the temperature measurement value in the furnace and comparing it with a reference temperature set value, and outputting an analog signal according to the compared value to a sequence controller;
- a third step of controlling combustion, fuel amount, air amount and combustion gas emissions of each burner in the sequence controller by a program set according to the output value of the second step Measuring the pressure in the furnace by the combustion gas according to the combustion load; Comparing the measured pressure value with a reference pressure and outputting an analog signal according to the compared value to the sequence controller;
- And according to the output value of the fifth step to provide a combustion gas control method of a regenerative heating furnace comprising a six step of controlling the combustion gas emissions set in the third step in the sequence controller.
- the burner undergoing combustion starts combustion by opening the blocking valve of fuel and air
- the opposite burner may exhaust the combustion gas by opening the combustion gas blocking valve.
- the fuel and air cutoff valves of the burner undergoing the combustion may be delayed by an input value than the combustion exhaust gas cutoff valves of the opposite burners, thereby preventing an increase in the furnace pressure caused by the combustion gas.
- the sixth step may give a factor to the combustion gas emissions set in the third step to control the combustion gas emissions in the sequence controller.
- the measured pressure value is less than the reference pressure in the sixth step may be given a factor of 0.9 ⁇ 0.99 to discharge the amount less than the amount of combustion gas generated in the furnace to increase the pressure in the furnace.
- a factor of 1.01 to 1.1 may be given to exhaust the amount larger than the amount of combustion gas generated in the furnace to lower the furnace pressure.
- a heating furnace in which regenerative burners are installed;
- a fuel gas line for supplying fuel and air to the regenerative burners, and a combustion air line;
- a combustion gas line for regenerating combustion gas generated during combustion of the regenerative burners;
- a temperature measuring system and a pressure measuring system for measuring the temperature and the pressure in the heating furnace;
- a sequence controller for controlling combustion of the regenerative burners, fuel amount, air amount and combustion gas emission;
- the sequence controller may control the supply of fuel and air of the burner that burns among the regenerative burners to be delayed by a predetermined input value than the combustion gas exhaust of the burner that does not burn.
- sequence controller may compare the measured pressure value with the reference pressure to give a factor to the combustion gas emissions.
- sequence controller may give a 0.9 ⁇ 0.99 factor to the combustion gas emissions when the measured pressure value is less than the reference pressure.
- sequence controller may give a factor of 1.01 to 1.1 when the measured pressure value is greater than the reference pressure.
- the temperature measuring unit for measuring the temperature in the furnace and the pressure measuring unit for measuring the pressure in the furnace, comparing the measured value and the reference value to select the burner and fuel gas, combustion air, combustion exhaust gas output value
- the control unit, and the control unit for controlling the amount of burner and fuel gas, combustion air, combustion exhaust gas in accordance with the signal of the controller.
- a regenerative burner consisting of a pair for heating the material in the heating furnace, the fuel gas line and combustion air line for the combustion of the burner, the combustion gas for the heat storage of the combustion gas generated during combustion
- a combustion gas control apparatus for a regenerative heating furnace including a measuring gas, a pressure measuring instrument, and a combustion gas exhaust line configured for heat storage without installing a separate combustion gas regulating valve and line for measuring and regulating pressure in the furnace may be provided. Can be.
- FIG. 1 is a schematic diagram showing a control device of a regenerative heating furnace according to an embodiment of the present invention.
- FIG. 2 is a flowchart illustrating a control method of a regenerative heating furnace according to an embodiment of the present invention.
- Figure 3 is a table comparing the combustion gas amount and energy consumption rate of the existing furnace and the heating furnace of the present invention.
- the heating furnace may be a heating furnace for heating the material to a forgeable temperature in the forging steel production process.
- the present invention is not limited thereto, and the heating furnace may be another kind of heating furnace.
- FIG. 1 is a schematic diagram showing a control device of a regenerative heating furnace according to an embodiment of the present invention.
- the regenerative heating furnace 100 is provided with regenerative burners 1a and 1b opposed to left and right sides thereof.
- two regenerative burners 1a and 1b facing each other form a pair.
- the regenerative burners 1a and 1b have the first burner 1a burned according to a predetermined period (for example, 1 minute), and the pair The first burner 1a is in the exhausted state, and the second burner 1b is in the combustion state at the time of switching at a predetermined period after the second burner 1b provided in the exhausted state is in the exhausted state.
- the two regenerative burners 1a and 1b facing each other are switched to a combustion mode (ignition) and an exhaust mode (fire) alternately (alternatively) at a predetermined period, that is, at the time of switching.
- a temperature measuring device 24 and a pressure measuring device 25 for pressure measurement are installed in the furnace temperature measurement by combustion.
- Each regenerative burner (1a, 1b) sucks the combustion gas generated in the fuel gas line 112, combustion air line 122 and the heating furnace 100 for combustion to the heat storage of the regenerative burner (1a, 1b).
- Combustion gas line 132 is installed.
- the gas shutoff side 9 is installed in the fuel gas line 110 connected to the regenerative burners 1a and 1b and is connected to one main fuel gas line 110.
- the main fuel gas line 110 is provided with a flow meter 18 and a flow control valve 21, in order to correct the temperature and pressure in the flow rate measured by the flow meter 18, the temperature gauge 12, the pressure gauge 15 is installed.
- Combustion air line 122 and combustion gas line 132 of each regenerative burner (1a, 1b) is provided with the respective shut-off sides (10, 11) to operate independently, each one main combustion It is connected to the air line 120 and the main combustion gas line 130.
- the main combustion air line 120 and the main combustion gas line 130 are provided with flow meters (19, 20) and flow control valves (22, 23), the temperature to the flow rate measured by the flow meters (19, 20) And temperature gauges 13 and 14 and pressure gauges 16 and 17 to correct the pressure.
- main combustion air line 120 and the main combustion gas line 130 is provided with a combustion air blower 26 for supplying combustion air and a combustion gas discharge fan 27 for exhausting the combustion gas.
- the control unit 200 may include a flow rate indicating controller (30, 31, 32, FIC), a temperature indicating controller (28, TIC), a pressure indicating controller (29, PIC), the sequence controller 33.
- FIG. 2 is a flowchart illustrating a control method of a regenerative heating furnace according to an embodiment of the present invention.
- the temperature inside the furnace is measured by the temperature measuring sensor 24 (TE) inside the furnace temperature sensor in the temperature sensor in the furnace 100.
- TE temperature measuring sensor 24
- Step 2 The furnace temperature measurement value and the reference temperature set value are compared, and an analog signal corresponding to the compared value is output to the sequence controller 33. That is, the temperature value measured by the temperature measuring device 24 is compared with the reference temperature value targeted by the temperature indicating controller 28 and TIC, and an analog signal according to the difference between the measured value and the reference temperature value is measured by the sequence controller 33,. To PLC).
- Step 3 The program adjusts each burner combustion amount, fuel amount, air amount and combustion exhaust gas discharge amount according to the output value.
- the sequence controller 33 adjusts the burner time, fuel gas amount, combustion air amount and combustion exhaust gas discharge amount of the burner by the program set according to the output value.
- Burner combustion adjusts ON-OFF TIME according to output value.
- the fuel and air shutoff sides 9 and 10 of the burner in the combustion mode are delayed by the input value KS (1 second to 2 seconds) than the combustion gas shutoff side 11 of the burner in the opposite exhaust mode to exhaust the combustion gas. Proceeds first to prevent in-house pressure rise by combustion gases.
- the sequence controller 33 outputs a flow rate value set by the fuel gas amount, the combustion air amount, and the combustion gas amount regulator to adjust the flow rate.
- the amount of fuel gas and combustion gas is controlled according to the output value of the combustion air according to the combustion control of the burner, but in this case, the combustion of the fuel is preferentially performed and the combustion gas is adjusted accordingly. Excessive pressure on the combustion gases in the furnace may occur. Therefore, in the case of a conventional regenerative heating furnace, an exhaust line for separately discharging about 20% of the total combustion gas is installed and a combustion gas control damper is installed to prevent temporary excessive pressure rise.
- the present invention does not install such a separate exhaust line, at the same time to control the combustion of the burner and the control of the fuel gas, combustion air, combustion gas flow rate value according to the combustion to prevent the pressure rise in the furnace.
- the combustion air amount and the combustion gas amount are configured in the program through the following calculation formula.
- the flow rate measured in each of the flowmeters 18, 19, and 20 is corrected by the temperature and pressure measured by the pressure gauges 15, 16, and 17 and the temperature gauges 12, 13, and 14, respectively. It is indicated and controlled by the flow rate relative to the temperature (1 atm, 0 ° C.).
- Step 4 Pressure measurement in the furnace depending on combustion load.
- the pressure inside the furnace generated by the combustion gas is measured through a pressure gauge (25, PT).
- Step 5 Analog signal output by comparing the measured internal pressure with the reference pressure.
- the pressure value measured by the pressure measuring device 25 is compared with a target reference pressure value by the temperature indicating controller 29 (PIC), and an analog signal corresponding to the compared value is output to the sequence controller 33 (PLC).
- PIC temperature indicating controller 29
- Step 6 The preset program according to the output value controls the combustion exhaust gas emissions.
- the sequence controller 33 gives the combustion gas amount factor set in the third step to further adjust the combustion gas amount.
- the combustion gas amount is controlled by the value calculated in the control of the third step, but since the pressure in the furnace can be changed by additional factors, additionally measures the pressure in the furnace and gives a factor of 0.9 to 1.1 to the set combustion gas amount. Maintain proper furnace pressure.
- a factor of 0.9 is applied to reduce the combustion gas amount, thereby increasing the furnace pressure.
- a factor of 1.1 is applied to exhaust the amount larger than the amount of combustion gas generated to lower the pressure in the furnace.
- the factor value may be changed in the range of 0.99 to 0.9 according to the pressure difference, and when larger than the reference pressure, the factor value may be changed in the range of 1.01 to 1.1 according to the pressure difference.
- Figure 3 is a table comparing the combustion gas amount and energy consumption rate of the existing furnace and the heating furnace of the present invention.
- the table is based on the combustion capacity of 10,000,000 kcal / hr, the combustion gas amount and the energy consumption rate in the furnace of the present invention can be seen that 5% of the fuel is reduced than the conventional furnace.
- the present invention utilizes 100% of the combustion gas generated during combustion by securing a system in which a part (about 20%) of the high temperature combustion gas is released into the atmosphere in order to control the furnace pressure in the existing heating furnace. It is to control the internal pressure at the same time.
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- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
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- Regulation And Control Of Combustion (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Combustion Of Fluid Fuel (AREA)
Abstract
Description
Claims (11)
- 가열로에 축열식버너(Regenerative Burner)들이 설치되고 버너연소량, 버너에 공급되는 연료 및 연소공기, 연소배기가스 배출량을 제어할 수 있도록 구성된 축열식 가열로의 연소 제어 방법에 있어서:상기 가열로 내의 온도감지 센서에서 로내 온도를 감지하는 1단계;상기 로내 온도 측정값을 입력받아 기준 온도 설정값과 비교하고, 상기 로내 온도 측정값과 상기 기준 온도 설정값의 차이에 따른 아날로그 신호를 시퀀스 제어기로 출력하는 2단계;상기 2단계의 출력값에 따라 설정된 프로그램에 의해 상기 시퀀스 제어기에서 각 버너들의 연소 조절, 연료량, 공기량 및 연소가스 배출량을 조절하는 3단계;연소 부하에 따라 연소가스에 의한 상기 가열로 내의 압력을 측정하는 4단계;상기 측정된 압력값을 기준압력과 비교하고, 상기 측정된 압력값과 상기 기준압력의 차이에 따른 아날로그 신호를 상기 시퀀스 제어기로 출력하는 5단계; 및상기 5단계의 출력값에 따라 상기 시퀀스 제어기에서 상기 3단계에서 설정된 연소가스 배출량을 제어하는 6단계를 포함하는 축열식 가열로의 연소가스 제어방법.
- 제 1 항에 있어서,상기 제3단계에서상기 버너들이 교차 연소할 때, 연소를 진행하는 버너는 연료 및 공기의 차단변이 열려 연소를 시작하며, 맞은 편 버너는 연소가스 차단변이 열려 연소가스를 배기하는 것을 특징으로 하는 축열식 가열로의 연소가스 제어방법.
- 제 1 항 또는 제 2 항 있어서,상기 연소를 진행하는 버너의 연료 및 공기의 차단변은 맞은편 버너의 연소배기가스 차단변보다 입력값 만큼 지연시켜, 연소가스에 의한 로내 압력 상승을 방지하는 것을 특징으로 하는 축열식 가열로의 연소가스 제어방법.
- 제 1 항에 있어서,상기 제6단계는상기 시퀀스 제어기에서 로내 압력조절을 위해 연소가스 배출량을 조절하기 위한 상기 제3단계에서 설정된 연소가스 배출량에 팩터(factor)를 부여하는 것을 특징으로 하는 축열식 가열로의 연소가스 제어방법.
- 제 4 항에 있어서,상기 제6단계에서상기 측정된 압력값이 기준압력보다 작을 경우 0.9 ~ 0.99의 팩터를 부여하여 상기 로 내에서 발생되는 연소가스량보다 적은 양을 배출시켜서 로내 압력을 상승시키는 것을 특징으로 하는 축열식 가열로의 연소가스 제어방법.
- 제 4 항에 있어서,상기 제6단계에서상기 측정된 압력값이 기준압력보다 클 경우 1.01 ~ 1.1의 팩터를 부여하여 상기 로내에서 발생되는 연소가스량보다 많은 양을 배기시켜 로내 압력을 낮추는 것을 특징으로 하는 축열식 가열로의 연소가스 제어방법.
- 축열식 가열로의 연소가스 제어장치에 있어서:축열식 버너들이 설치되는 가열로;상기 축열식 버너들로 연료와 공기를 각각 공급하는 연료가스 라인과, 연소공기 라인;상기 축열식 버너들의 연소시 발생하는 연소가스의 축열을 위한 연소가스 라인;상기 가열로 내의 온도 및 압력을 측정하는 온도 측정계, 압력 측정계; 및상기 축열식 버너들의 연소 조절, 연료량, 공기량 및 연소가스 배출량을 조절하는 시퀀스 제어기를 포함하되;상기 시퀀스 제어기는상기 축열식 버너들 중에서 연소를 진행하는 버너의 연료 및 공기의 공급을 연소를 진행하지 않는 버너의 연소가스 배기보다 소정의 입력값 만큼 지연되도록 제어하는 것을 특징으로 하는 축열식 가열로의 연소가스 제어방법.
- 제 7 항에 있어서,상기 시퀀스 제어기는상기 압력 측정계에서 측정된 압력값과 기준압력을 비교하여, 측정된 압력값이 기준압력보다 작거나 큰 경우 연소가스 배출량에 팩터(factor)를 부여하는 것을 특징으로 하는 축열식 가열로의 연소가스 제어장치.
- 제 7 항에 있어서,상기 시퀀스 제어기는상기 측정된 압력값이 기준압력보다 작을 경우 연소가스 배출량에 0.9 ~ 0.99 팩터를 부여하는 것을 특징으로 하는 축열식 가열로의 연소가스 제어장치.
- 제 7 항에 있어서,상기 시퀀스 제어기는상기 측정된 압력값이 기준압력보다 큰 경우 연소가스 배출량에 1.01 ~ 1.1 팩터를 부여하는 것을 특징으로 하는 축열식 가열로의 연소가스 제어장치.
- 축열식 가열로의 연소가스 제어장치에 있어서:가열로에서 소재의 가열을 위해 한쌍씩 이루어지는 축열식 버너들을 이용하고,상기 축열식 버너들에는 연소를 위한 연료가스 라인, 연소공기 라인 그리고 연소시 발생하는 연소가스의 축열을 위한 연소가스 라인이 연결되며,상기 연료가스 라인은 메인 연료가스 라인과 연결되고, 상기 연소공기 라인은 메인 연소공기 라인과 연결되며, 상기 연소가스 라인은 메인 연소가스 라인과 연결되되, 상기 메인 연료가스 라인과 상기 메인 연소공기 라인 그리고 상기 메인 연소가스 라인 각각에 설치되는 유량측정계, 온도 측정계, 압력측정계, 유량 조절을 위한 유량조절밸브;상기 가열로 내의 온도 및 압력을 측정하는 온도측정계와 압력측정계; 및상기 축열식 버너들의 연소 조절, 연료량, 공기량 및 연소가스 배출량을 조절하는 시퀀스 제어기를 포함하되;상기 시퀀스 제어기는상기 축열식 버너들 중에서 연소를 진행하는 버너의 연료 및 공기의 공급을 연소를 진행하지 않는 버너의 연소가스 배기보다 기설정된 입력값 만큼 지연되도록 제어하며,상기 압력측정계에서 측정된 압력값이 기준압력보다 작을 경우 연소가스 배출량에 0.9 ~ 0.99 팩터를 부여하고, 상기 압력측정계에서 측정된 압력값이 기준압력보다 큰 경우 연소가스 배출량에 1.01 ~ 1.1 팩터를 부여하는 것을 특징으로 하는 축열식 가열로의 연소가스 제어장치.
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CN201480041703.7A CN105408502A (zh) | 2013-07-22 | 2014-07-16 | 蓄热式加热炉的燃烧排气控制装置及控制方法 |
EP14829588.4A EP3026127A1 (en) | 2013-07-22 | 2014-07-16 | Device and method for controlling combustion exhaust gas of regenerative heating furnace |
US14/906,593 US20160161119A1 (en) | 2013-07-22 | 2014-07-16 | Apparatus and method of controlling combustion exhaust for regenerative heating furnace |
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TWI585345B (zh) * | 2016-08-15 | 2017-06-01 | 台技工業設備股份有限公司 | 廢氣排出系統及廢氣排出方法 |
CN106642195A (zh) * | 2016-09-30 | 2017-05-10 | 中冶华天南京电气工程技术有限公司 | 蓄热式燃烧温度场分侧动态延时控制方法与控制系统 |
CN106758480B (zh) * | 2017-01-09 | 2018-02-02 | 汇能凯斯(深圳)新能源技术有限公司 | 一种智能火焙纸干燥成套设备 |
CN107013936A (zh) * | 2017-05-17 | 2017-08-04 | 陈静 | 一种基于平均灰度和面积的面向加热炉火焰实时检测的方法 |
CN109059570A (zh) * | 2018-08-01 | 2018-12-21 | 湖北新冶钢特种钢管有限公司 | 用于使用混合煤气的加热炉的节能控制系统和方法 |
CN109387088A (zh) * | 2018-11-19 | 2019-02-26 | 中国恩菲工程技术有限公司 | 阳极炉系统及其控制方法 |
ES2903201T3 (es) * | 2019-04-11 | 2022-03-31 | Hertwich Eng Gmbh | Procedimiento para el encendido continuo de cámaras de combustión con al menos tres quemadores regenerativos |
CN111780565B (zh) * | 2020-06-10 | 2021-11-09 | 鞍钢集团工程技术有限公司 | 一种加热炉燃气主管道压力控制方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06147461A (ja) * | 1992-11-02 | 1994-05-27 | Chugai Ro Co Ltd | 蓄熱式バーナの制御方法 |
JPH0835649A (ja) * | 1994-07-27 | 1996-02-06 | Chugai Ro Co Ltd | 蓄熱再生式燃焼システムの流量制御方法 |
JPH0861620A (ja) * | 1994-08-13 | 1996-03-08 | Osaka Gas Co Ltd | 蓄熱式交番燃焼装置 |
JPH10185177A (ja) * | 1996-12-24 | 1998-07-14 | Daido Steel Co Ltd | リジェネバーナ式加熱炉 |
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Publication number | Priority date | Publication date | Assignee | Title |
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US3212554A (en) * | 1961-04-18 | 1965-10-19 | Selas Corp Of America | Method of furnace operation |
KR100634776B1 (ko) * | 2001-01-17 | 2006-10-16 | 제이에프이 스틸 가부시키가이샤 | 축열식 버너를 갖는 가열로 및 그 조업방법 |
CN101353579B (zh) * | 2008-08-26 | 2011-12-14 | 武汉钢铁(集团)公司 | 一种7.63米焦炉负压炉内烘炉方法 |
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06147461A (ja) * | 1992-11-02 | 1994-05-27 | Chugai Ro Co Ltd | 蓄熱式バーナの制御方法 |
JPH0835649A (ja) * | 1994-07-27 | 1996-02-06 | Chugai Ro Co Ltd | 蓄熱再生式燃焼システムの流量制御方法 |
JPH0861620A (ja) * | 1994-08-13 | 1996-03-08 | Osaka Gas Co Ltd | 蓄熱式交番燃焼装置 |
JPH10185177A (ja) * | 1996-12-24 | 1998-07-14 | Daido Steel Co Ltd | リジェネバーナ式加熱炉 |
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CN105408502A (zh) | 2016-03-16 |
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