WO2006087803A1 - ガス発熱量制御方法とガス発熱量制御装置 - Google Patents
ガス発熱量制御方法とガス発熱量制御装置 Download PDFInfo
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- WO2006087803A1 WO2006087803A1 PCT/JP2005/002606 JP2005002606W WO2006087803A1 WO 2006087803 A1 WO2006087803 A1 WO 2006087803A1 JP 2005002606 W JP2005002606 W JP 2005002606W WO 2006087803 A1 WO2006087803 A1 WO 2006087803A1
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- Prior art keywords
- fuel gas
- calorific value
- gas
- tank
- fluctuation
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/002—Gaseous fuel
- F23K5/007—Details
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D21/00—Control of chemical or physico-chemical variables, e.g. pH value
- G05D21/02—Control of chemical or physico-chemical variables, e.g. pH value characterised by the use of electric means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2400/00—Pretreatment and supply of gaseous fuel
- F23K2400/20—Supply line arrangements
- F23K2400/201—Control devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2900/00—Special features of, or arrangements for fuel supplies
- F23K2900/05004—Mixing two or more fluid fuels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2221/00—Pretreatment or prehandling
- F23N2221/10—Analysing fuel properties, e.g. density, calorific
Definitions
- the present invention relates to a gas heating value control method and a gas heating value control device. More specifically, the present invention relates to a gas calorific value control method and a gas calorific value control device capable of suppressing the calorific value fluctuation when the calorific value of the gas as the fuel of the combustion facility fluctuates like low calorie gas. .
- BFG Blast Furnace Gas
- % carbon dioxide
- CO carbon monoxide
- BFG contains 2-10 g / Nm 3 in addition to this, and after removing this to about 0. Olg / Nm with a dust remover, as a fuel gas with a calorific value of about 800 kcalZNm 3 Used in coke ovens, heating furnaces, boilers, etc.
- low calorie gas is defined as a gas whose calorific value is about 12 MJ / Nm 3 or less.
- the low calorie gas is not limited to blast furnace gas (BFG) but includes various gases such as converter gas (LDG) and mixed gas thereof.
- each gas turbine has an allowable fluctuation range of calorie that is unique to each gas turbine. Has a lower limit. If the upper limit (e.g. about +10 of the average caloric value)
- Calorie fluctuation in which calorie increases or decreases in this way means changes in physical properties related to the calorific value of fuel gas. Specifically, calorific value per volume (KcalZNm 3 ), calorific value per weight (MjZk g ), Wobbe Index (Mj / m 3 ) and other physical properties. In this specification and claims, this calorie is also called calorific value, and calorie fluctuation is also called calorific value fluctuation.
- FIG. 11 is a piping diagram showing an outline of a conventional gas turbine power generation facility.
- the conventional technology shown in the figure is an example configured to increase or decrease the heat generation amount of the fuel gas whose heat generation amount varies.
- the calorific value is set to the desired value (design).
- the heat reduction gas and the heat increase gas are mixed in the mixer 102.
- calorific value measuring devices 104 and 105 are provided on the upstream side and the downstream side of the fuel gas supply passage 103, respectively, and feedforward control is performed by the detection signal of the calorie measuring device 104, and the calorie measuring device 105 Perform feedback control with the detection signal.
- These signals are input to a controller 106 that compares with a predetermined set value 107 set in advance according to the gas turbine 101. Then, a predetermined control signal from the controller 106 is sent through the distributor 115 to adjust the heat reduction flow rate. Is output to the valve 108 or the heat increase flow control valve 113, and the heat reducing gas is supplied from the heat reducing gas supply 109 to the mixer 102 via the supply pipe 110, or supplied from the heat increasing gas supply 114. Heat increase gas is supplied to the mixer 102 via 110.
- 111 is a gas compressor and 112 is a generator.
- FIG. 12 is a graph showing an example of fuel gas calorific value fluctuation at each measurement point of the gas turbine power generation facility of FIG.
- the horizontal axis shows time (seconds), and the vertical axis shows the calorific value of fuel gas (MJZ kg).
- the two-dot chain line shown in the figure shows the calorie fluctuation of the fuel gas in the low calorie gas supply passage 103, and the solid line shows the calorie fluctuation at the outlet of the mixer 102 as a simulation result when controlled by this conventional technology. .
- the calorific value of the fuel gas supplied from the fuel gas generator 100 fluctuates irregularly and greatly with time as indicated by a two-dot chain line in the figure. Even if feed-forward control and feedback control are performed on this original fluctuation, in this case, the control system is exposed to fluctuations in the fuel gas containing excessive short-cycle components and medium-cycle components, and the control is performed. The system becomes unstable, making it difficult to set the controller parameters. As a result, depending on the situation, the response is close to the oscillation state as shown by the solid line in the figure.
- This figure shows an example in which low-calorie gas with variable calorific value is oscillated by feed-forward control and feedback control, and is not usable as fuel gas for a gas turbine (combustion facility).
- the mixed gas regulating valve repeats a large stroke operation, which may damage the valve and shorten its life.
- Patent Document 1 JP 2004-190632 A
- the present invention has been made in order to solve the problem, and it is possible to reduce low calorie gas and the like by suppressing fluctuations in calorific value of low calorie gas supplied as fuel gas to the combustion facility.
- the purpose of the present invention is to provide a gas calorific value control method and a gas calorific value control device that can supply fuel gas with a stable calorific value.
- the gas heating value control method of the present invention comprises:
- the fuel gas supplied to the combustion facility is time-mixed in a tank in which a gas inlet and a gas outlet are separately formed, thereby suppressing fluctuations in the calorific value of the fuel gas,
- the fuel gas is reduced or increased so that the fluctuation range of the measured calorific value falls within the allowable range as the fuel gas of the combustion facility.
- the fuel gas supplied into the gas inlet force tank is temporarily stored in the tank for the fuel gas supplied from time to time, and is mixed in a time difference manner therein.
- the gas outlet formed separately is discharged. Therefore, even when the calorific value of the fuel gas is fluctuating, the time difference mixing suppresses the fluctuation range of the calorific value, and the calorific value fluctuation rate is reduced. Then, the fuel gas in which the heat generation amount fluctuation is suppressed is reduced or increased to adjust the gas heat generation amount within the allowable fluctuation range of the combustion facility, so that the heat generation fluctuation can be easily adjusted.
- the time difference mixing means that the fuel gas flowing into the tank continuously with a time delay is mixed with the fuel gas that has already flowed and stayed.
- the fuel gas calorific value fluctuation after the calorific value fluctuation is suppressed is measured in the fuel gas supply passage on the downstream side of the tank,
- Feedback is performed so that the fuel gas is reduced or increased on the upstream side of the calorific value measurement point of the fuel gas supply passage so that the measured fluctuation range of the calorific value falls within the allowable range as the fuel gas of the combustion facility. Let ’s control it.
- Feeback control in the document of this specification and claims means that control based on the measurement value of the calorific value measurement point is performed upstream of the measurement point.
- the fluctuation range of the measured calorific value is within the allowable range as the fuel gas of the combustion facility.
- the feedforward control may be performed to reduce or increase the fuel gas downstream of the calorific value measurement point of the fuel gas supply passage.
- Fee forward control in the specification and claims means that control based on the measurement value of the calorific value measurement point is performed downstream of the measurement point.
- this feedforward control based on the fuel gas heating value and flow rate before mixing, the mixing amount of the heat-increasing gas and heat-reducing gas necessary for the heating value after mixing to be the expected value is determined. Force that has a method of calculating and giving it as a command value Other methods may be used.
- Feed-forward control for reducing or increasing the heat so that the measured fluctuation in calorific value falls within the allowable range for the fuel gas of the combustion facility is performed in addition to the feedback control to reduce or increase the temperature of the fuel gas. Even so, ⁇ ⁇ .
- the fuel gas calorific value fluctuation at the tank outlet is predicted from the fuel gas calorific value fluctuation measured on the upstream side of the tank,
- Feed forward control should be performed to reduce or increase the temperature of the fuel gas on the downstream side of the tank so that the predicted fluctuation in the calorific value of the fuel gas falls within the allowable range for the fuel gas of the combustion facility.
- the fuel gas is mixed with the time difference by the tank in which the gas inlet and the gas outlet are separately formed.
- a simulation model is created to suppress the variation in calorific value due to the combination, and based on the simulation model, the variation in the calorific value of the fuel gas at the tank outlet is predicted from the calorific value variation of the fuel gas measured upstream of the tank.
- a tank having a predetermined flow rate and volume is obtained by multiplying a plurality of first-order lag and dead time system signals by constant multiplication, and the detector delay is set at that time constant. If you make it with considerable corrections.
- the fuel gas calorific value fluctuation average value measured on the upstream side of the tank and the fuel gas calorific value fluctuation average value measured in the fuel gas supply passage on the downstream side of the tank are monitored.
- the fuel gas is reduced or increased in the upstream side of the tank so that the change in the calorific value of the fuel gas on the upstream side of the tank approaches the calorific value in the fuel gas supply passage on the downstream side of the tank.
- the gas heating value control device of the present invention comprises:
- a first calorific value measuring device for measuring the calorific value variation of the fuel gas after mixing in the tank and suppressing the calorific value variation
- the first calorific value measuring device is provided on the downstream side of the mixer provided in the fuel gas supply passage on the downstream side of the tank,
- a second calorific value measuring device for measuring the calorific value variation of the fuel gas after mixing in the tank and suppressing the calorific value variation
- Feed-forward control that mixes heat-reducing gas or heat-reducing gas into the fuel gas with a mixer so that the fluctuation range of the heat value measured with the second calorific value meter is within the allowable range as fuel gas for combustion equipment You may provide the 2nd controller which performs.
- a second controller that performs food forward control for reducing or increasing the temperature of the fuel gas may be provided.
- a third calorific value measuring device for measuring a variation in the heat generation amount of the fuel gas on the upstream side of the tank in which the gas inlet and the gas outlet are separately formed,
- the fuel gas heat generation fluctuation at the tank outlet is predicted, and the predicted fuel gas heat generation fluctuation is the fuel gas of the combustion facility.
- a second controller that performs feedforward control so as to reduce or increase the temperature of the fuel gas so as to be within the allowable range of gas may be provided.
- a third calorific value measuring device for measuring a calorific value variation of the fuel gas exceeding a predetermined fluctuation range on the upstream side of the tank in which the gas inlet and the gas outlet are separately formed,
- the fuel gas is reduced or increased on the upstream side of the tank so that the fluctuation range is within the predetermined fluctuation range.
- Fuel gas heat generation at the tank outlet predicted from fluctuations in the amount of heat generated from the fuel gas measured upstream of the tank based on a simulation model created by predicting suppression of heat generation fluctuation due to time difference mixing of the fuel gas in the tank.
- a second controller for feedforward control is provided to reduce or increase the fuel gas in the fuel gas supply passage on the downstream side of the tank so that the amount fluctuation is within the allowable range for the fuel gas of the combustion facility.
- a third calorific value measuring device for measuring a variation in the heat generation amount of the fuel gas on the upstream side of the tank in which the gas inlet and the gas outlet are separately formed,
- the fuel gas calorific value fluctuation at the tank outlet is predicted based on the simulation model created by predicting the suppression of the calorific value fluctuation due to the time difference mixing of the fuel gas in the tank, and the fuel gas based on the predicted fuel gas calorific value fluctuation.
- a second controller that performs feed forward control to reduce or increase heat A mixer is provided in the fuel gas supply passage,
- a first calorific value measuring device for measuring the calorific value fluctuation of the fuel gas supplied to the combustion facility is provided downstream of the mixer,
- the feed-forward control is a feedback control for reducing or increasing the temperature of the fuel gas in the mixer so that the fluctuation range of the calorific value measured by the first calorific value measuring device is within the allowable range as the fuel gas of the combustion facility.
- a first controller for performing the above may be provided.
- a third calorific value measuring device for measuring the calorific value fluctuation of the fuel gas beyond a predetermined fluctuation range on the upstream side of the tank in which the gas inlet and the gas outlet are separately formed,
- the fuel gas is reduced or increased on the upstream side of the tank so that the fluctuation range is within the predetermined fluctuation range.
- Fuel gas heat generation at the tank outlet predicted from fluctuations in the amount of heat generated from the fuel gas measured upstream of the tank based on a simulation model created by predicting suppression of heat generation fluctuation due to time difference mixing of the fuel gas in the tank.
- a second controller that performs feed-forward control to reduce or increase the fuel gas in the fuel gas supply passage on the downstream side of the tank so that the amount fluctuation is within the allowable range as the fuel gas of the combustion facility;
- a mixer is provided in the fuel gas supply passage,
- a first calorific value measuring device for measuring the calorific value fluctuation of the fuel gas supplied to the combustion facility is provided downstream of the mixer,
- the feed-forward control is a feedback control for reducing or increasing the temperature of the fuel gas in the mixer so that the fluctuation range of the calorific value measured by the first calorific value measuring device is within the allowable range as the fuel gas of the combustion facility.
- a first controller for performing the above may be provided.
- a mixer for reducing or increasing the temperature of the fuel gas is provided in the tank or on the outer surface of the tank so that the fluctuation in the calorific value of the fuel gas is within the allowable range as the fuel gas of the combustion facility.
- the fuel gas may be configured to reduce or increase the temperature on the outer surface of the tank.
- a mixer is provided in the fuel gas supply passage on the upstream side of the tank,
- a monitoring controller is provided for monitoring the fuel gas calorific value fluctuation average value measured on the upstream side of the mixer and the fuel gas calorific value fluctuation average value measured on the downstream side of the mixer.
- the monitoring controller may be provided with a function of reducing or increasing the temperature of the monitor.
- the calorific value variation corresponding to the combustion facility is suppressed (mitigated) by time difference mixing. Therefore, it is possible to easily reduce or increase the temperature of the fuel gas.
- the amplitude of the calorific value fluctuation with the tank it is possible to suppress fluctuations in the short cycle and medium cycle, and mainly leave only fluctuations in the long cycle, so the fuel gas is reduced in heat.
- the heat it is possible to easily make the fuel gas whose calorific value fluctuates so that it can be stably used in the combustion facility. In this way, continuous stable operation of the equipment can be realized by suppressing the fluctuation of the calorific value within the allowable fluctuation range of the gas whose calorific value fluctuates as the fuel gas of the combustion equipment.
- FIG. 1 is a piping diagram showing an outline of a gas turbine power generation facility including a gas calorific value control device according to a first embodiment of the present invention.
- FIG. 2 is a graph showing a state in which the heat generation amount fluctuation is suppressed by the gas heat generation amount control device of FIG.
- FIG. 3 is a piping diagram showing an outline of a part of a gas turbine power generation facility including a gas heating value control device according to a second embodiment of the present invention.
- FIG. 4 is a graph showing a state in which fluctuations in calorific value are alleviated by the gas calorific value control device of FIG.
- FIG. 5 is a piping diagram showing an outline of a part of a gas turbine power generation facility including a gas heating value control device according to a third embodiment of the present invention.
- FIG. 6 is a block diagram showing an example of a simulation model in the gas heating value control device according to the third embodiment of FIG.
- FIG. 7 is a piping diagram showing an outline of a part of a gas turbine power generation facility including a gas heating value control device according to a fourth embodiment of the present invention.
- Fig. 8 is a graph showing a state where fluctuations in heat generation are mitigated by the gas heat generation amount control device of Fig. 7.
- FIG. 9 is a piping diagram showing an outline of a part of a gas turbine power generation facility including a gas heating value control device according to a fifth embodiment of the present invention.
- FIG. 10 is a block diagram showing an example of a simulation model in the gas heating value control device according to the fifth embodiment of FIG.
- FIG. 11 is a piping diagram showing an outline of a conventional gas turbine power generation facility.
- FIG. 12 is a graph showing fluctuations in heat generation in the gas turbine power generation facility of FIG.
- a gas heating value control device and a control method thereof according to the present invention will be described with reference to the accompanying drawings.
- a gas turbine will be described as an example of combustion equipment.
- an example in which the amount of heat generated by the fuel gas can be reduced or increased will be described.
- FIG. 1 shows an outline of a gas turbine power generation facility S including a gas heating value control device 1 according to the first embodiment of the present invention.
- FIG. 3 is a piping diagram in which a gas heat generation amount control device 1 of the present invention is provided on a path 3.
- the fuel gas supply passage 3 is configured to supply low-calorie gas or the like (hereinafter referred to as "fuel gas" ⁇ ⁇ ) generated in the fuel gas generator 4 (for example, a blast furnace) to the gas turbine 2 as fuel. Yes.
- the fuel gas supply passage 3 is provided with a tank 5 in which a gas inlet 6 and a gas outlet 7 are separately formed.
- the tank 5 is formed with a predetermined volume, and is configured such that fuel gas passing through the fuel gas supply passage 3 enters from the gas inlet 6 and exits from the gas outlet 7.
- This tank 5 functions as a noffer tank, and the fuel gas whose calorific value changes from the gas inlet 6 continuously flows into the inside, and is mixed with the fuel gas that has already flowed in and stopped, and is formed separately. Since it is discharged from the gas outlet 7, even when the calorific value of the fuel gas fluctuates, the time difference mixing reduces the range of the calorific value variation and reduces the calorific value fluctuation rate. .
- the fuel gas that has flowed into the tank 5 at the same time is distributed to a portion where the partial force flowing out from the gas outlet 7 stays in the tank 5 relatively late.
- the gas that has flowed in the past and the gas that has flowed in are continuously mixed.
- the fuel gas that fluctuates in calorific value that flows into the tank 5 every moment is mixed in the tank 5 in this manner.
- this is referred to as time difference mixing, and the tank 5 exerts a function of suppressing the heat amount fluctuation of the fuel gas by the action of time difference mixing.
- tank 5 The fluctuation range of the calorific value of the fuel gas exiting from the gas outlet 7 is reduced, and the fluctuation speed is reduced. That is, fluctuations in heat generation are greatly suppressed (relieved).
- the buffer effect by the tank 5 is that the fluctuation at the gas inlet 6 is a sin curve of the angular velocity ⁇ , the mixing in the tank 5 is complete mixing, and the time constant is T.
- the diagram shown in the upper part of the fuel gas supply passage 3 schematically shows fluctuations in the calorific value of the fuel gas.
- the time difference mixing in the tank 5 is an important configuration, and the fuel gas heat generation amount on the downstream side of the tank 5 is reduced by preliminarily mitigating fluctuations in the heat generation amount by time difference mixing of the fuel gas in the tank 5.
- the control to adjust the fluctuation to within the allowable fluctuation range of the gas characteristics of the combustion equipment by reducing or increasing the heat is made stable.
- the tank 5 is not limited to a structure as long as it has a predetermined volume.
- it may be a tank with a fixed internal volume that does not change its volume, or it may be a tank with a variable internal volume that is used as a device (gas holder) for monitoring the gas supply-demand balance in conventional gas turbine equipment.
- the internal volume variation type tank is a tank having an airtightly attached lid member that can move up and down according to the internal pressure of the tank. By using these tanks, it is possible to obtain a tank 5 that can exert an effect of suppressing fluctuations in the calorific value of the fuel gas. Further, a plurality of tanks 5 may be arranged in series or in parallel.
- the tank 5 is provided with a stirring device for stirring and mixing the fuel gas flowing in from the gas inlet 6, or the gas inlet A perforated plate or the like for mixing the fuel gas flowing in from 6 through many holes may be incorporated.
- a gas for reducing or increasing the heat is contained in the fuel gas.
- a mixer 8 for mixing is provided.
- a gas compressor 9 that compresses the fuel gas and a gas turbine 2 that combusts the fuel gas compressed by the gas compressor 9 are provided on the downstream side of the mixer 8.
- Machine 10 is configured to be driven Yes.
- the mixer 8 is connected to a control gas supply pipe 11 for supplying a heat reducing or heat increasing gas.
- the control gas supply pipe 11 includes a heat reduction gas supply unit 13 connected via a heat reduction flow rate adjusting valve 12 for adjusting the flow rate of the heat reduction gas, and a heat increase gas flow rate adjusting unit for adjusting the flow rate of the heat increase gas.
- a heat-increasing gas supplier 15 connected via a flow rate adjusting valve 14 is provided.
- an inert gas As the heat reduction gas, an inert gas, air, steam, waste nitrogen, exhaust gas discharged from a combustion facility, or the like can be used.
- Nitrogen gas (N) is preferably used as the inert gas.
- the inert gas is not limited to N, but carbon dioxide (CO) and helium.
- heat increasing gas natural gas, coke oven gas (COG), etc., which are medium to high calorie gas, can be used.
- the fuel gas supply passage 3 downstream of the mixer 8 is provided with a calorific value measuring device 16 for measuring the calorific value of the fuel gas in the fuel gas supply passage.
- a calorific value measuring device 16 for measuring the calorific value of the fuel gas in the fuel gas supply passage.
- the calorific value measuring device 16 a so-called calorimeter that directly measures the calorific value of gas, a device that measures the content (concentration) of combustible components, and the like are used. If importance is attached to the detection speed, it is now preferable to use a combustible gas concentration detector. Furthermore, a concentration detector that detects the concentration of the combustible component that is mainly included in the applied fuel gas or that combusts the main calorific value fluctuation may be used. .
- the calorific value measuring device 16 monitors the calorific value of the fuel gas on the downstream side of the mixer 8.
- the measured value measured by the calorific value measuring device 16 is input via the input path 17 to the first controller 19 for comparison with a predetermined set value 18 set in advance according to the gas turbine 2 (combustion equipment).
- the first controller 19 is a PI controller.
- the first controller 19 is in charge of feed knock control.
- a control signal for reducing or increasing the temperature of the fuel gas in the fuel gas supply passage 3 is sent from the output path 20 via the distributor 21 to the heat reduction flow control valve 12 or It is configured to be output to the heat increase flow control valve 14. Thereby, feedback control is performed.
- the gas calorific value control device 1 uses the fuel gas whose calorific value fluctuates in the fuel gas supply passage 3 to change the calorific value fluctuation range of the gas turbine 2 (fuel Explains the control to ensure that the fuel gas is within the allowable range that can be used stably as fuel gas for the firing equipment.
- the fuel gas supplied from the fuel gas generating device 4 via the fuel gas supply passage 3 enters from the gas inlet 6 of the tank 5 and is mixed in the tank 5 with a time difference.
- this tank 5 as described above, even if the fuel gas force flowing into the tank 5 momentarily flows into the tank 5 at the same time, the partial force flowing out from the gas outlet 7 is relatively early until the partial force flowing out from the gas outlet 7 is delayed. Therefore, the new gas that flows in continuously and the gas that flows in the past are continuously mixed, and the fluctuation amount of the calorific value of the fuel gas supplied from the fuel gas generator 4 is reduced. Large fluctuations are suppressed, and the fuel gas exiting from the gas outlet is in a state where the large fluctuations in calorific value are suppressed (mitigated).
- FIG. 2 is a graph showing a state in which the calorific value fluctuation is suppressed (relaxed) by the gas calorific value control device of FIG.
- FIG 2 is a volume of ⁇ this when the 40000M 3 tank 5 in FIG. 1, a simulation result of inhibition (relaxation) state of calorie variance in the case where the fuel gas fluctuates calorific was supplied at a flow rate 280000Nm 3 Zhr It is shown.
- the horizontal axis indicates time (seconds), and the vertical axis indicates the gas calorie value (MjZkg), which is the calorific value of the fuel gas.
- the calorific value fluctuation (original fluctuation) of the fuel gas supplied from the fuel gas generator 4 is generated at the inlet of the tank.
- the fluctuation of the heat generation at the tank outlet after the time-lag mixing in tank 5 is shown by the dotted line in the figure.
- a large calorific value fluctuation is suppressed.
- the fuel gas gas calorie before entering tank 5 varies from approximately 5.3 MjZkg to approximately 8.8 MjZkg, but the fuel gas gas calorie leaving tank 5 is approximately 5.8 Mj / kg. From kg to about 6.8MjZkg, the fluctuation range has been greatly reduced.
- the fluctuation cycle has the short-cycle and middle-cycle fluctuations removed, and the long-cycle fluctuation mainly remains. This effect increases as the volume of tank 5 increases with respect to the fuel gas supply flow rate. There is a tendency to become prominent. If the original fluctuation cycle is short and the fluctuation range is small, the economic standpoint is effective even if the volume of tank 5 is reduced.
- the calorific value measuring device 16 provided on the downstream side of the mixer 8 measures the calorific value of the fuel gas in the fuel gas supply passage 3.
- the measured value measured by the calorific value measuring device 16 is input to the first controller 19 via the input path 17.
- the measured value sent from the calorific value measuring device 19 is compared with a predetermined set value 18 set in advance according to the gas turbine 2.
- the fluctuation range of the calorific value of the fuel gas supplied to the gas turbine 2 is controlled so as not to exceed the allowable range as the fuel gas of the gas turbine 2.
- the fluctuation of the calorific value after being controlled by the mixer 8 is suppressed to a large calorific value fluctuation with a long cycle as shown by the solid line in FIG.
- a stable fuel gas can be obtained with a variation in heat generation within an allowable fluctuation range.
- the tank 5 suppresses a large heating value fluctuation. It is possible to easily control the fuel gas to a stable calorific value by performing feedback control for mixing the heat-reducing gas or the heat-reducing gas based on the calorific value fluctuation on the downstream side of the mixer 8. In addition, since the control is performed on the fuel gas in a state where a large variation in heat generation amount is suppressed, the amount of heat reduction or heat increase gas supplied to the fuel gas is reduced.
- the fluctuation range of the calorific value of the fuel gas in the gas turbine 2 is set to ⁇ 10% of the reference calorific value (average value)
- the calorific value downstream of the tank 5 In order to match the average value with the reference calorific value set for gas turbine 2, by providing tank 5 with a volume that can meet the specifications, only a constant ratio of control gas is supplied downstream. Sometimes it gets better.
- control may be performed so that the heat reducing gas and the heat increasing gas are supplied simultaneously.
- it may be configured such that only heat reduction or only heat increase is performed, and only one of the fuel gas heat generation amount fluctuations may be suppressed.
- the mixer 8 may be provided inside the tank 5 or on the outer surface of the tank 5 so as to reduce or increase the temperature of the fuel gas inside or outside the tank 5. With this configuration, the equipment can be made compact.
- FIG. 3 is a piping diagram showing an outline of a part of a gas turbine power generation facility including a gas heating value control device according to a second embodiment of the present invention.
- This second embodiment is the first embodiment described above.
- feedforward control is performed by measuring a quantity variation.
- the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
- a second calorific value measuring device 23 is provided in the fuel gas supply passage 3 between the tank 5 and the mixer 8.
- the calorific value of the fuel gas in the fuel gas supply passage 3 measured by the second calorific value measuring instrument 23 is input to the second controller 25 via the input path 24.
- the second controller 25 in the second embodiment outputs a control signal for the remaining heat amount fluctuation remaining in the fuel gas whose heat amount fluctuation is suppressed by the tank 5.
- the second controller 25 is in charge of feedforward control, and may be formed integrally with the first controller 19.
- the measured value of the calorific value of the fuel gas in the fuel gas supply passage 3 measured by the calorific value meter 16 provided downstream of the mixer 8 is input.
- Input to the first controller 19 via the path 17, and the first controller 19 compares the predetermined set value 18 set in advance according to the gas turbine 2, and the fuel in the fuel gas supply passage 3.
- a heat reduction control signal is output to the output path 20, and when it is necessary to increase the temperature, a heat increase control signal is output to the output path 20.
- this heat reduction or heat increase control signal is sent from the second controller 25 to the output path 26. Is corrected by the heat reduction or heat increase control signal output via the As a result of correcting the control signal from the first controller 19 with the control signal from the second controller 25, if it is necessary to reduce the temperature of the fuel gas in the fuel gas supply passage 3, it is reduced via the distributor 21.
- a control signal is sent to the heat flow control valve 12, and a predetermined amount of heat reduction gas is supplied from the heat reduction gas supply device 13 to the mixer 8.
- a control signal is sent to the heat increase flow control valve 14 via the distributor 21, and a predetermined amount of the heat increase gas is mixed from the heat increase gas supply unit 15. Supplied to the vessel 8 .
- the gas heating value control device 27 of the second embodiment when the fuel gas is reduced or increased in temperature by the mixer 8, a large heating value fluctuation is caused by the tank 5 as in the first embodiment.
- the tank 5 on the upstream side of the mixer 8 Because the heat generation amount is adjusted by feedforward control in which heat is reduced or mixed with a heat-increased gas based on fluctuations in the heat generation amount remaining in the fuel gas emitted from the fuel gas, it also follows faster heat generation amount fluctuations than in the first embodiment.
- the fuel gas downstream of the power tank configured to perform the feedforward control in addition to the feedback control has a heat generation amount fluctuation range reduced by the tank 5. Therefore, based on the calorific value and flow rate of the fuel gas in the fuel gas supply passage 3 measured by the second calorific value measuring instrument 23 input to the second controller 25, the second controller 25 in advance.
- a heat reduction control signal is added to the output passage 20 to increase the heat. If necessary, a control signal for increasing heat may be output to the output path 20.
- the feedforward control calculates the amount of mixture necessary for the heat value after mixing to be a predetermined value based on the heat value and flow rate of the fuel gas before mixing the heat-increasing and heat-reducing gases.
- the required amount mixing control is performed such that the mixing amount is given as a mixing value and mixing is performed. This control is performed by feedforward control only by the second controller 25.
- FIG. 4 is a graph showing a state in which the calorific value fluctuation is alleviated by the gas calorific value control device 27 of FIG. It is rough.
- FIG. 4 shows a state simulated under the same conditions as in FIG. According to the second embodiment, as shown by a solid line in the figure, compared to FIG. 2 above, the calorific value fluctuation after being controlled by the mixer 8 is suppressed by a large period because the large calorific value fluctuation is suppressed. The amount of heat generation is small, and the fuel gas can be stabilized within the allowable range for the fuel gas of the gas turbine 2.
- FIG. 5 is a piping diagram showing an outline of a part of a gas turbine power generation facility including a gas heating value control device according to a third embodiment of the present invention.
- the fuel gas calorific value measured by the third calorific value meter 29 installed upstream of tank 5 was created by predicting the calorific value fluctuation at the gas outlet 7 from the calorific value fluctuation at the gas inlet 6 Based on the above simulation model, the heat generation amount fluctuation at the outlet of tank 5 is predicted from the signal, and feedforward control is performed to reduce or increase the heat in mixer 8.
- the same components as those in the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.
- a third calorific value measuring device 29 is provided in the fuel gas supply passage 3 upstream of the tank 5.
- the calorific value of the fuel gas in the fuel gas supply passage 3 measured by the third calorific value measuring device 29 is input via the input path 30 to the simulator 31 incorporating the simulation model.
- the simulation model pre-installed in the simulator 31 is created as a simulation model corresponding to the buffer tank to be used, based on the simulation result of the buffer tank model by the finite element method or the like.
- this simulation model for example, in a tank 5 having a predetermined flow rate and volume, a signal obtained by multiplying a plurality of first-order lag and dead time system signals by a constant multiple is used, and the detector delay is added to the time constant. Created with considerable corrections.
- FIG. 6 is a block diagram showing an example of a simulation model in the gas heat generation amount control apparatus according to the third embodiment of FIG.
- the simulation model is created by adding the signals of the first-order lag and dead time systems by multiplying them by a constant, but this figure shows an example based on three systems for explanation.
- the first-order lag of the measurement device is shown in the upstream of the simulation model.
- l + Ta * s) Z (l + Tb * s) is compensated, and the signal of the system of multiple first-order lags and dead time is added to the signal multiplied by a constant number and added at the gas outlet 7 of the tank 5 Predicts changes in calorific value.
- Fig. 6 Each symbol in Fig. 6 is as follows: s; Laplace conversion parameter, Ta, Tb; Delay compensation constant, Tl, T2, T3;-Next delay, LI, L2, L3; Dead time, Gl, G2, G3; Constant multiple Each coefficient is shown.
- a signal of fluctuation in heat generation at the gas outlet 7 of the tank 5 predicted by such a simulation model is output to the second controller 25 via the path 32.
- the second controller 25 a predetermined set value 18 set in advance according to the gas turbine 2 and the flow rate 22 are compared.
- the gas heat generation amount control device 33 of the third embodiment as described above, even if a quick heat generation amount variation occurs in the fuel gas, the fast heat generation amount variation is measured on the upstream side of the tank 5, and Since the control according to the heat generation fluctuation is performed based on the simulation model, the heat generation fluctuation can be suppressed with good followability. Even in the case where there is a measurement time delay in the second calorific value measuring device 23 in the second embodiment, the gas calorific value control device 33 in the third embodiment can cope with the compressive force.
- FIG. 7 is a piping diagram showing an outline of a part of a gas turbine power generation facility including a gas heat generation amount control device according to the fourth embodiment of the present invention.
- the feedback control of the above-mentioned first or second embodiment is added to the feedforward control of the third embodiment.
- the same components as those in the second and third embodiments are denoted by the same reference numerals, and the description thereof is omitted.
- the measured value of the calorific value of the fuel gas in the fuel gas supply passage 3 measured by the calorific value measuring device 16 provided on the downstream side of the mixer is the first value.
- One controller 19 When the first controller 19 compares the predetermined set value 18 set in advance according to the gas turbine 2 with the first controller 19 to reduce the temperature of the fuel gas in the fuel gas supply passage 3, the output path A heat reduction control signal is output to the output path 20 when it is necessary to increase the heat.
- the signal power of the heat reduction or heat increase feedback control is corrected by the heat forward or heat increase feedforward control signal output from the second controller 25.
- the control signal from the first controller 19 being corrected by the control signal from the second controller 25
- a control signal is sent to the heat reduction flow rate adjustment valve 12, and a predetermined amount of heat reduction gas is supplied from the heat reduction gas supply device 13 to the mixer 8.
- a control signal is sent to the heat increase flow adjustment valve 14 via the distributor 21, and a predetermined amount of the heat increase gas is mixed from the heat increase gas supply device 15. Is supplied to vessel 8.
- Fig. 8 is a graph showing a state in which the calorific value fluctuation is suppressed (relieved) by the gas calorific value control device of Fig. 7, and the fluctuation in the calorific value of the fuel gas on the upstream side of the tank 5 as described above is shown.
- the solid line represents the variation in calorific value after being controlled by the feedforward control that is controlled based on the simulation model and the feedback control that is controlled based on the fluctuation of the calorific value of the fuel gas downstream of the mixer 8.
- a large calorific value fluctuation is further suppressed and the calorific value fluctuation is small with a long cycle, and the fuel gas can be stable within the allowable fluctuation range as the fuel gas of the gas turbine 2.
- the gas heating value control device 35 of the fourth embodiment the fuel gas is fast! Even if the heat generation fluctuation occurs, the rapid heat generation fluctuation is measured on the upstream side of the tank 5, and control according to the heat generation fluctuation is performed based on the simulation model. Can be suppressed. Also, according to the gas heating value control device 35 of the fourth embodiment, the second heating value measuring device 23 causes a measurement time delay according to the gas heating value control device 35 of the second embodiment. It can cope with any case.
- the feedforward control incorporating a simulation model that can approximate the actual tank characteristics in the simulator 31 is applied, and the third calorific value measurement provided upstream of the tank 5 is applied.
- Clever use of the residence time in the tank longer than the measurement time of vessel 29 This compensates for the measurement time delay and predicts the heat generation amount at the tank outlet with high accuracy, achieving good follow-up by feedforward control and fluctuations in residual heat generation at the inlet side of the gas turbine 2.
- Continuous stable operation of the equipment can be realized by keeping the width within the allowable limit range.
- FIG. 9 is a piping diagram showing an outline of a part of a gas turbine power generation facility including a gas heating value control device according to a fifth embodiment of the present invention.
- This fifth embodiment is the same as the fourth embodiment.
- Embodiment Note that the same reference numerals are given to the same components as those in the fourth embodiment, and description thereof will be omitted.
- a second mixer 37 is provided in the fuel gas supply passage 3 on the upstream side of the tank 5, and the fuel gas supply passage on the upstream side of the second mixer 37. 3 is provided with a third calorific value measuring device 29.
- the calorific value of the fuel gas in the fuel gas supply passage 3 measured by the third calorific value measuring device 29 is inputted from the input path 30 to the third controller 38.
- the third controller 38 also receives the calorific value of the fuel gas measured by the calorific value meter 16 provided on the downstream side of the mixer 8 provided on the downstream side of the tank 5 from the input path 17. Have been entered.
- This third controller 38 determines whether or not the average value of the calorific value fluctuation on the upstream side of the tank 5 has a certain range of rise or fall relative to the average value of the calorific value fluctuation on the downstream side of the mixer 8. Is being monitored.
- This third controller 38 is a supervisory controller.
- the output path 39 and the distributor 40 are connected from the third controller 38.
- a control signal for supplying a predetermined amount of heat reduction gas from the heat reduction gas supply unit 42 to the second mixer 37 from the second control gas supply pipe 45 is supplied to the flow rate adjustment valve 41 for heat reduction.
- a control signal is supplied to the flow rate adjustment valve 43 for heat increase, and a predetermined amount of heat increase gas from the heat increase gas supply device 44 to the second mixer 37 from the second control gas supply piping 45. Is output.
- the fuel gas in the fuel gas supply passage 3 measured by the third calorific value measuring device 29 Is also input to the simulator 31 incorporating the simulation model.
- the control signal output from the third controller 38 to the output path 39 is also input to the simulator 31.
- FIG. 10 is a block diagram showing an example of a simulation model incorporated in advance in the simulator 31 in the gas heating value control device 46 according to the fifth embodiment.
- the heat reduction gas supply device 42 is supplied to the second mixer 37 by controlling the heat reduction flow rate adjustment valve 41 of FIG.
- This simulation model also has the power created by multiplying the signals of multiple first-order lag and dead time systems by a constant multiple.
- This figure also shows an example based on three systems for explanation.
- correction is performed on the upstream side of the simulation model when there is a difference in the calorific value variation average value of the fuel gas on the upstream side of the tank 5.
- the primary delay of the measuring device is represented by the delay compensation (1 + Ta * s) Z (1 + Tb * s) shown in the upstream of the simulation model.
- the third controller 38 performs correction after supplying the heat reduction gas to correct the average value difference of the calorific value fluctuation for the signal, and a plurality of ones are applied to the corrected signal.
- the signal of the next delay and dead time system is multiplied by a constant, and the calorific value fluctuation at the gas outlet 7 of the tank 5 is predicted by combining them.
- Each symbol in FIG. 10 is the same as that in FIG. 6, and s: Laplace conversion parameter, Ta, Tb: Delay compensation constant, Tl, T2, T3; —Next delay, LI, L2, L3: Dead time , Gl, G2, G3; constant multiplication factors, respectively.
- the expression in the second controller 25 shows a differential expression for fluctuation.
- a heat generation amount fluctuation signal at the gas outlet 7 of the tank 5 predicted by such a simulation model is output to the second controller 25 via the path 32.
- the second controller 25 outputs a control signal for the remainder of the calorific value fluctuation predicted to remain in the fuel gas in which the average difference in calorific value fluctuation is suppressed by the tank 5.
- the measured value of the calorific value of the fuel gas in the fuel gas supply passage 3 measured by the calorific value measuring device 16 provided on the downstream side of the mixer 8 is the first value.
- the constant value 18 is compared, and if it is necessary to reduce the temperature of the fuel gas in the fuel gas supply passage 3, a heat reduction control signal is output to the output passage 20.
- the heat reduction control signal is corrected by the control signal output from the second controller 25 to the output path 26.
- the distributor 21 is used.
- a control signal is sent to the heat reduction flow control valve 12, and a predetermined amount of heat reduction gas is supplied from the heat reduction gas supply device 13 to the mixer 8.
- the calorific value of the fuel gas is adjusted within the allowable fluctuation range.
- the gas heat generation amount control device 46 of the fifth embodiment even if a certain amount of increase or decrease occurs in the average value of the fluctuation in the heat generation amount of the fuel gas, the increase or decrease of the average value is stored in the tank. Therefore, even if the fuel gas changes the average value of the calorific value fluctuation, it can be stably controlled to be within the allowable range as the fuel gas of the gas turbine 2. .
- control may be performed so that the heat reducing gas and the heat increasing gas are supplied simultaneously, and depending on the fuel gas conditions, only heat reduction or only heat increase is performed. Even if only one of them is configured to suppress the fuel gas calorific value fluctuation average value.
- a gas turbine is exemplified as the combustion equipment! /, But the combustion equipment in the present invention is not limited to the gas turbine.
- These gas heat generation amount control devices can also be applied to other combustion facilities such as boilers, heating furnaces, incinerators, and the like.
- the configuration is such that only the heat reduction or only the heat increase can be performed. May be. And you may comprise so that both heat reduction or heat increase can be performed simultaneously.
- a force provided with a controller having individual functions may be arbitrarily integrated.
- the fuel gas used includes blast furnace gas (BFG), converter gas (LDG), coal bed gas contained in the coal bed (“Coal mine gas”, referred to as CMG), direct reduction By-product gas generated by steelmaking and smelting reduction steelmaking, GTL (Gas-to-Liquid) process, generated by Til gas, oil sands, and oil refining process
- BFG blast furnace gas
- LDG converter gas
- CMG coal bed gas contained in the coal bed
- CMG coal bed gas contained in the coal bed
- GTL Gas-to-Liquid
- Til gas methane gas
- Landfill gas methane gas
- Low calorie gas such as by-product gas generated by chemical reaction is included.
- the fuel gas includes not only low calories but also medium and high calories.
- the present invention can be applied not only to the above-mentioned gas, but also to a mixture of two or more gases as appropriate, and to a gas obtained by mixing these gases.
- any of the above-described embodiments is a conceptual diagram for explaining the basic functions, and in fact, related auxiliary devices and mounted products (for example, valves, starting devices, transformers, circuit breakers, tanks) Abbreviations, etc.), etc.
- a gas calorific value control device that suppresses fluctuations in the calorific value of a gas whose gas characteristics fluctuate and supplies the gas as a stable fuel gas to a combustion facility such as a gas turbine, a boiler, a heating furnace, or an incinerator.
- a combustion facility such as a gas turbine, a boiler, a heating furnace, or an incinerator.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Feeding And Controlling Fuel (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2005/002606 WO2006087803A1 (ja) | 2005-02-18 | 2005-02-18 | ガス発熱量制御方法とガス発熱量制御装置 |
CN200580048055A CN100575789C (zh) | 2005-02-18 | 2005-02-18 | 气体发热量控制方法和气体发热量控制装置 |
JP2007503541A JP4594376B2 (ja) | 2005-02-18 | 2005-02-18 | ガス発熱量制御方法とガス発熱量制御装置 |
BRPI0519804-6A BRPI0519804A2 (pt) | 2005-02-18 | 2005-02-18 | método para controlar o valor de gás calorìfico e dispositivo de controle de valor calorìfico de gás |
Applications Claiming Priority (1)
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PCT/JP2005/002606 WO2006087803A1 (ja) | 2005-02-18 | 2005-02-18 | ガス発熱量制御方法とガス発熱量制御装置 |
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WO2006087803A1 true WO2006087803A1 (ja) | 2006-08-24 |
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PCT/JP2005/002606 WO2006087803A1 (ja) | 2005-02-18 | 2005-02-18 | ガス発熱量制御方法とガス発熱量制御装置 |
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JP (1) | JP4594376B2 (ja) |
CN (1) | CN100575789C (ja) |
BR (1) | BRPI0519804A2 (ja) |
WO (1) | WO2006087803A1 (ja) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009138958A (ja) * | 2007-12-04 | 2009-06-25 | Tokyo Gas Co Ltd | 混合ガス供給装置及びその組成変動抑制方法 |
EP2330281A1 (en) * | 2008-10-01 | 2011-06-08 | Mitsubishi Heavy Industries, Ltd. | Gas turbine device |
US20110283837A1 (en) * | 2008-10-23 | 2011-11-24 | Robert Millner | Method and device for operating a smelting reduction process |
US20120036961A1 (en) * | 2009-01-30 | 2012-02-16 | Robert Millner | Method and System for Producing Pig Iron or Fluid Steel Pre-Products |
JP2014055536A (ja) * | 2012-09-12 | 2014-03-27 | Hitachi Ltd | ガスタービン燃焼器およびガスタービン燃焼器の燃料制御方法 |
US8911700B2 (en) | 2009-02-20 | 2014-12-16 | Siemens Vai Metals Technologies Gmbh | Process and installation for producing substitute gas |
JP2016191024A (ja) * | 2015-03-31 | 2016-11-10 | 東京瓦斯株式会社 | ガス調整装置、燃焼システム及びプログラム |
JP2019035064A (ja) * | 2017-08-10 | 2019-03-07 | 東京瓦斯株式会社 | ガス調整装置、ガス供給システム、ガス調整プログラム |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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RO127836B1 (ro) * | 2012-03-12 | 2013-12-30 | Aurel Enache | Instalaţie pentru tratarea unui combustibil în vederea creşterii puterii calorice |
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- 2005-02-18 WO PCT/JP2005/002606 patent/WO2006087803A1/ja not_active Application Discontinuation
- 2005-02-18 BR BRPI0519804-6A patent/BRPI0519804A2/pt active Search and Examination
- 2005-02-18 CN CN200580048055A patent/CN100575789C/zh not_active Expired - Fee Related
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JPH09317499A (ja) * | 1996-05-28 | 1997-12-09 | Kawasaki Steel Corp | 高炉ガス専焼式ガスタービンの制御方法 |
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JP2009138958A (ja) * | 2007-12-04 | 2009-06-25 | Tokyo Gas Co Ltd | 混合ガス供給装置及びその組成変動抑制方法 |
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EP2330281A1 (en) * | 2008-10-01 | 2011-06-08 | Mitsubishi Heavy Industries, Ltd. | Gas turbine device |
US20110283837A1 (en) * | 2008-10-23 | 2011-11-24 | Robert Millner | Method and device for operating a smelting reduction process |
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US20120036961A1 (en) * | 2009-01-30 | 2012-02-16 | Robert Millner | Method and System for Producing Pig Iron or Fluid Steel Pre-Products |
CN102378818A (zh) * | 2009-01-30 | 2012-03-14 | 西门子Vai金属科技有限责任公司 | 用于制造生铁或液态钢半成品的方法和设备 |
US8968441B2 (en) * | 2009-01-30 | 2015-03-03 | Siemens Vai Metals Technologies Gmbh | Method and system for producing pig iron or fluid steel pre-products |
US8911700B2 (en) | 2009-02-20 | 2014-12-16 | Siemens Vai Metals Technologies Gmbh | Process and installation for producing substitute gas |
JP2014055536A (ja) * | 2012-09-12 | 2014-03-27 | Hitachi Ltd | ガスタービン燃焼器およびガスタービン燃焼器の燃料制御方法 |
JP2016191024A (ja) * | 2015-03-31 | 2016-11-10 | 東京瓦斯株式会社 | ガス調整装置、燃焼システム及びプログラム |
JP2019035064A (ja) * | 2017-08-10 | 2019-03-07 | 東京瓦斯株式会社 | ガス調整装置、ガス供給システム、ガス調整プログラム |
JP7007886B2 (ja) | 2017-08-10 | 2022-01-25 | 東京瓦斯株式会社 | ガス調整装置、ガス供給システム、ガス調整プログラム |
Also Published As
Publication number | Publication date |
---|---|
JP4594376B2 (ja) | 2010-12-08 |
BRPI0519804A2 (pt) | 2009-03-17 |
CN100575789C (zh) | 2009-12-30 |
CN101115954A (zh) | 2008-01-30 |
JPWO2006087803A1 (ja) | 2008-07-03 |
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