JP4358692B2 - Heavy oil reformer and control method thereof, gas turbine power generation system and method of using reformed oil - Google Patents

Description

  The present invention relates to a heavy oil reformer and a control method thereof. The present invention also relates to a gas turbine power generation system equipped with a heavy oil reformer. Furthermore, the present invention relates to a usage method for using the reformed oil reformed by the heavy oil reformer in the reformed oil utilization equipment.

  Since heavy oil containing a large amount of heavy metal is not suitable as a gas turbine power generation fuel, a method of demetalizing and converting it into a useful energy source has been proposed (for example, see Patent Documents 1 and 2).

  In Patent Documents 1 and 2, heavy oil is decomposed by contacting high-temperature and high-pressure water and heavy oil under reaction conditions of 20 MPa or higher and about 400 ° C. to produce hydrocarbon gas, light oil, heavy oil. And obtaining metal compounds such as metal oxides. Also, hydrocarbon gas and light oil are dissolved in high-temperature and high-pressure water to obtain reformed oil, while metal compounds present in heavy oil are captured and removed by binding with scavengers such as calcium compounds and coke. It is described to do.

JP 2003-261881 A (summary) Japanese Unexamined Patent Publication No. 2003-49180 (Abstract, Paragraph 0009)

  The above-mentioned patent document does not describe a method for confirming the concentration of a metal such as vanadium (V) which is a corrosive substance contained in the reformed oil in real time. Methods for measuring the concentration of metals such as V include ICP and flameless atomic absorption, but the measurement takes time. When the measurement frequency is low, reformed oil with a high V concentration may be supplied to the gas turbine combustor, and the turbine blades may be corroded to reduce power generation efficiency. For this reason, there exists a problem that the period of a maintenance work must be raised.

  An object of the present invention is to enable measurement of the concentration of V contained in reformed oil in real time in a heavy oil reformer for reforming by mixing and reacting heavy oil with high-temperature and high-pressure water. There is.

  The present invention measures the kinematic viscosity of the produced reformed oil and calculates the V concentration from this kinematic viscosity in a heavy oil reformer that reforms by mixing and reacting heavy oil with high-temperature and high-pressure water. A V concentration calculation device is included.

  The present invention is based on the new knowledge that the V concentration can be calculated from the kinematic viscosity of the reformed oil, and this makes it possible to measure the V concentration in real time.

  According to the present invention, when the heavy oil reforming apparatus is used in connection with heavy oil utilizing equipment such as a gas turbine, the V concentration of the reformed oil is measured continuously or at a predetermined cycle. When it is high, it becomes possible to supply low V concentration oil to the reformed oil and supply it to the utilization equipment.

  Based on the above, in the present invention, a reactor that reforms by mixing and reacting heavy oil with high-temperature and high-pressure water, a reformed oil tank that stores the reformed oil reformed in the reactor, A low V concentration oil replenishing device for supplying low V concentration oil to the reformed oil tank, a kinematic viscosity measuring device for measuring the kinematic viscosity of the reformed oil, a V concentration calculated from the kinematic viscosity, and the V concentration A heavy oil reforming apparatus including a V concentration adjustment controller that determines the amount of low V concentration oil to be replenished to the reforming oil tank based on the amount of reforming oil stored in the reforming oil tank is proposed.

  In addition, a reactor for reforming by mixing and reacting heavy oil with high temperature and high pressure water, a kinematic viscosity measuring device for measuring the kinematic viscosity of the reformed oil produced in the reactor, and a V concentration from the kinematic viscosity. A heavy oil reformer having a V concentration adjustment controller that adjusts the flow rate of a pump that calculates and adjusts the flow of water and heavy oil to the reactor is proposed.

  A method for controlling a heavy oil reformer comprising a reactor for reforming by mixing and reacting heavy oil with high temperature and high pressure water, wherein the kinematic viscosity of the reformed oil produced in the reactor is controlled. Measure and calculate the V concentration from the kinematic viscosity, calculate the set values of the flow rate of water and heavy oil supplied to the reactor from the obtained V concentration and the amount of reformate produced, and calculate the flow rate of the pump A control method for a heavy oil reforming apparatus is proposed.

  Furthermore, a heavy oil reformer for producing a reformed oil by mixing and reacting a heavy oil with high-temperature high-pressure water, and a reformed oil tank for storing the reformed oil produced by the heavy oil reformer A gas turbine power generation device that generates power using the reformed oil supplied from the reformed oil tank as fuel, a low V concentration oil replenishing device that replenishes the reformed oil tank with low V concentration oil, A kinematic viscosity measuring device that measures the kinematic viscosity of the reformed oil that flows into the reformed oil tank, and a V concentration that is calculated based on the obtained kinematic viscosity, and the V concentration and the modified oil that flows into the reformed oil tank. A heavy oil-fired gas turbine power generation system including a V concentration adjustment controller for determining a replenishment amount of low V concentration oil supplied to the reforming oil tank from a flow rate of the refined oil and a liquid level of the reforming oil tank is proposed. .

  Furthermore, a heavy oil reformer for producing a reformed oil by mixing and reacting a heavy oil with high-temperature high-pressure water, and a reformed oil tank for storing the reformed oil produced by the heavy oil reformer A gas turbine power generation device that generates power using the reformed oil supplied from the reformed oil tank as a fuel, a low V concentration oil tank for replenishing the reformed oil tank with low V concentration oil, One of the reformed oil stored in the reformed oil tank when the V concentration calculated based on the kinematic viscosity measurement result of the reformed oil generated by the heavy oil reformer is less than the limit value. A heavy oil-fired gas turbine power generation system including a reforming oil return device for returning a part to the low V concentration oil tank is proposed.

  Moreover, heavy oil is mixed with high-temperature high-pressure water and reacted to produce reformed oil, the kinematic viscosity of the produced reformed oil is measured, the V concentration is calculated from the kinematic viscosity, and the V concentration of the reformed oil is calculated. Proposes a method for supplying low-concentration oil to the reformed oil and adjusting the V-concentration to supply the reformed oil using equipment when the value exceeds the limit value.

  The heavy oil reforming apparatus of the present invention comprises a reactor for mixing and reacting heavy oil with high-temperature and high-pressure water to decompose and reform, and carbonization containing steam after reducing the pressure of the reformed oil obtained in this reactor. A gas-liquid separator that separates gas and liquid into hydrogen gas and reformed oil, a reformed oil tank that stores the separated reformed oil, and the reformed oil in the reformed oil tank or flows into the reformed oil tank A kinematic viscosity meter that extracts a part of the reformed oil and measures the kinematic viscosity, and an instruction to calculate the V concentration in the reformed oil from the kinematic viscosity and adjust the flow rate of the low V concentration oil supplied to the reformed oil tank A V concentration adjustment controller.

  The reformed oil obtained by the heavy oil reformer can be used as a fuel for generating power for driving a generator in a gas turbine power generation system, for example.

  According to the present invention, reformed oil having a V concentration equal to or lower than the limit value can be supplied to the gas turbine combustor, and the V concentration in the reformed oil can be controlled to suppress gas turbine blade corrosion. In addition, the maintenance cycle can be extended with respect to the increase in the V concentration in the reformed oil due to the performance deterioration of the heavy oil reformer.

  According to the present invention, the V concentration contained in the reformed oil can be measured by a simple method. Thereby, it became possible to suppress the corrosion of the reformed oil utilizing equipment such as a gas turbine.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to the following examples.

  In this embodiment, heavy oil is reformed, the V concentration in the reformed oil is measured, and when the V concentration is high, oil having a low V concentration is mixed to adjust the V concentration, and this is used as fuel. A heavy oil tank gas turbine power generation system for driving the gas turbine will be described with reference to FIGS.

  In this system, the water 100 is pressurized to 20 MPa by the water supply pump 30 for supplying water under pressure, and the water preheater 40 is heated to 450 ° C. to generate the high-temperature and high-pressure water 102. Similarly, the pressure of the heavy oil 101 is increased to 20 MPa by the heavy oil supply pump 31 that supplies heavy oil under pressure, and the oil is heated to 350 ° C. by the oil preheater 41, whereby the oil is changed to the high temperature / high pressure heavy oil 103. . As the water preheater 40 and the oil preheater 41, an electric heater, a heat exchanger with high-temperature steam, or the like can be used.

The high-temperature high-pressure water 102 and the high-temperature high-pressure heavy oil 103 are mixed upstream of the reactor 1 to become a mixed fluid 104 and supplied to the reactor 1. The reactor 1 was heated from the outside with the heater 20, and the temperature of the mixed fluid 104 was raised to 450 ° C. The average residence time in terms of vapor in the reactor 1 was 30 h ⁻¹ . The heavy oil contained in the mixed fluid 104 reacts with water to reform the heavy oil, resulting in a hydrocarbon gas, a light oil, and a heavy component having a large molecular weight. Hydrocarbon gas and light oil are dissolved and mixed in high-temperature and high-pressure water to form a reformed portion 106, which is conveyed from the top of the reactor 1. The heavy fraction 105 does not dissolve or mix in the high-temperature high-pressure water, but settles at the bottom of the reactor 1. Metals contained in the heavy oil are concentrated in the heavy portion 105 and removed to the heavy portion extractor 2 by opening and closing the reactor outlet valve 13. After the pressure in the heavy extractor 2 becomes the same as the pressure in the reactor 1, the reactor outlet valve 13 is closed, the heavy extractor valve 14 is opened, and the heavy component 105 is removed from the system. Extract. In this example, the heavy component 105 extracted from the heavy component extractor 2 was collected in the heavy component collector 3. The pressure in the reactor 1 is adjusted by the decompressor 4 and the decompression valve 12. Here, an orifice is used for the decompressor 4, and pressure fluctuations in the reactor 1 are suppressed by minute opening and closing of the decompression valve 12.

  The reformed portion 106 from which the metals have been removed is decompressed to 0.1 MPa by the decompressor 4 and then supplied to the gas-liquid separator 5, where steam, hydrogen, carbon monoxide, methane, ethane, propane, butane and the like are supplied. It is separated into the hydrocarbon gas 107 contained and the reformed oil 108 which is a component to be liquefied. Since the hydrocarbon gas 107 does not contain V, the flow rate is controlled by the hydrocarbon gas flow rate control valve 16 as it is and is supplied to the gas turbine combustor 60.

  The reformed oil 108 separated by the gas-liquid separator 5 is stored in the reformed oil tank 6 after the flow rate is measured by the reformed oil flow meter 73. A part of the reformed oil 108 stored in the reformed oil tank 6 is extracted to the kinematic viscosity measuring device 70 by opening the reformed oil extraction valve 15, and the kinematic viscosity is measured. The measured kinematic viscosity signal is sent to the V concentration controller 71 to calculate the V concentration. That is, a V concentration calculating device is formed by the kinematic viscosity measuring device 70 and the V concentration adjusting controller 71. When the V concentration is higher than the limit value, the low V concentration oil 112 stored in the low V concentration oil tank 7 is supplied to the reformed oil tank 6 using the low V concentration oil pump 32, and the reformed oil 108 is supplied. The V concentration inside is adjusted. As the low V concentration oil 112, a fuel oil having a physical property value such as kinematic viscosity, density, and calorific value close to that of the reformed oil, such as light oil or heavy oil A, is used. The light oil 109 having the V concentration adjusted to be less than the gas turbine limit value is pressurized by the light oil pump 33 and supplied to the gas turbine combustor 60 as the gas turbine fuel oil 110. The light oil 109 and the hydrocarbon gas 107 supplied to the gas turbine combustor 60 are mixed with the air 113 pressurized by the compressor 62 and combusted to become the combustion gas 114, which drives the gas turbine 61, and the combustion exhaust gas 115 It is discharged into the atmosphere from the chimney 53.

  FIG. 2 is a flowchart of the operation / control method in the present embodiment. The operation and control method of the heavy oil reformer will be described with reference to FIG.

  In the operation method of the heavy oil reformer of the present invention, the kinematic viscosity of the reformed oil 108 is measured to prevent the gas turbine 61 from being supplied with the gas turbine fuel oil 110 having a high V concentration. The low V concentration oil 112 is supplied to the reforming oil tank 6 to adjust the V concentration. In step S1, the reformed oil 108 is supplied to and stored in the reformed oil tank 6, and a part of the reformed oil 108 is extracted from the reformed oil tank 6 by opening the reformed oil extraction valve 15 at regular time intervals. . In step S 2, the kinematic viscosity of the reformed oil 108 is measured by the kinematic viscosity measuring device 70, and the measurement result is sent to the V concentration adjusting controller 71. In step S3, based on the sent kinematic viscosity, the V oil concentration controller 71 uses the function of the relationship between the V concentration in the reformed oil and the kinematic viscosity as shown in FIG. A V concentration of 108 is calculated. Here, the relationship between the V concentration in the reformed oil and the kinematic viscosity varies depending on the heavy oil as the raw material, but the function of the V concentration in the reformed oil and the kinematic viscosity can be examined by experiment. In step S4, the liquid level in the reformed oil tank 6 is measured by the reformed oil tank liquid level gauge 72. In step S5, the V concentration controller 71 receives the measurement result signal in step S4 and stores the reformed oil 108. Calculate the quantity.

  On the other hand, in step S6, the flow rate of the reformed oil 108 is measured by the reformed oil flow meter 73, and in step S7, the average value of the reformed oil flow rate during the measurement interval is obtained by the V concentration controller 71.

  Next, in step S8, a measurement interval until the next execution of step S1 is determined. The shorter the measurement interval, the more accurately the V concentration can be managed. Here, the following equations (1) to (3) calculated from the capacity of the reforming oil tank 6, the flow rate of the reforming oil 108 and the V concentration are used. Determine the measurement interval.

  Equation (1) is an equation for obtaining the vanadium concentration of the reformed oil 108.

  Equation (2) is an equation for obtaining the kinematic viscosity measurement interval when the vanadium concentration a of the reformed oil 108 is lower than 0.5 ppm set as a limit value when the reformed oil is supplied to the gas turbine combustor. .

  Equation (3) is an equation for obtaining the kinematic viscosity measurement interval when the vanadium concentration a of the reformed oil 108 is higher than 0.5 ppm.

Here, t is a regular interval, V is the amount of oil stored in the reformed oil tank 6, F is the flow rate of the reformed oil 108 (average value during the measurement interval obtained in step S7), and a is the reformed oil The vanadium concentration in 108, c _n is the vanadium concentration of the oil in the reformed oil tank 6 measured this time, and c _n-1 is the vanadium concentration of the oil in the reformed oil tank 6 measured last time.

  In step S9, it is confirmed that the V concentration of the reformed oil in the reformed oil tank obtained in step S3 is less than the limit value. If it is less than the limit value, it is not necessary to supply low-V-concentration oil to the reformed oil, and it is not necessary to adjust the water supply pump 30 and heavy oil supply pump 31, so calculate using equation (3) in step S8. Steps S1 to S9 are repeated after the measurement interval time. When the V concentration of the oil in the reformed oil tank 6 is not less than the limit value, the process proceeds to step S10 and subsequent steps.

  In step S10, the supply amount of the low V concentration oil 112 necessary for lowering the vanadium concentration of the reformed oil 108 in the reformed oil tank 6 to be equal to or less than the gas turbine inlet fuel limit value is calculated. The supply amount is calculated using the equation (4) from the V concentration and the amount of oil stored in the reformed oil tank 6.

Here, [Delta] V the supply amount of the low V concentrations oil 112, c _l is a gas turbine inlet limit vanadium concentration.

  In step S11, the liquid level when the amount of low V concentration oil calculated in step S10 is supplied to the reforming oil tank 6 is calculated, and it is determined whether or not the liquid level is less than the allowable amount of the tank. If the liquid level in the reformed oil tank 6 is less than the allowable amount, the process proceeds to step S12, and if it exceeds the allowable value, the process proceeds to step S13. In step S12, the low V concentration oil pump 32 is started, the amount of low V concentration oil calculated in step S10 is supplied to the reforming oil tank 6, and the V concentration of the oil in the reforming oil tank 6 is limited to the gas turbine inlet. Adjust to less than the value. Also in step S13, the low V concentration oil pump 32 is started and the low V concentration oil 112 is supplied to the allowable value of the reforming oil tank 6 to reduce the V concentration of the oil in the reforming oil tank 6 as much as possible.

  After step S12 or step S13 is completed, the process proceeds to step S14, and the flow rates of the water supply pump 30 and the heavy oil supply pump 31 are calculated in order to reduce the V concentration in the reformed oil 108. As a result of our experiment, as shown in FIG. 4, it was found that the V concentration in the reformed oil 108 becomes lower as the residence time of the mixed fluid 104 in the reactor 1 becomes longer. As can be seen from this relationship, by increasing the residence time of the mixed fluid 104 in the reactor 1, the V concentration in the reformed oil 108 can be lowered below the gas turbine inlet limit value. The V concentration in the reformed oil 108 with respect to the residence time of the reactor 1 is made an approximate expression such as an exponential function, and the residence required for lowering the V concentration a in the reformed oil 108 obtained in step S8 below the limit value. Time is calculated, and further, flow rate set values of the water supply pump 30 and the heavy oil supply pump 31 for obtaining the residence time are calculated. In order not to give a large change to the reaction rate in the reactor 1, it is preferable to change the flow rate while keeping the ratio of water and heavy oil constant, but it is not always necessary to fix the ratio.

  In step S15, the flow settings of the water supply pump 30 and heavy oil supply pump 31 calculated in step S14 are changed by a signal output from the V concentration adjusting controller 71. As a result, the residence time of the reactor 1 is optimized, and the V concentration in the reformed oil 108 becomes less than the gas turbine inlet limit value. After the end of step S15, it repeats from step S1 again after the measurement interval calculated in step S6.

FIG. 5 shows the relationship between the temperature of the reactor 1, that is, the reaction temperature and the V concentration in the reformed oil 108 in this example. The pressure of the reactor 1 is 5 to 30 MPa, and the residence time is in the range of 120 h ^{−1 to} 12 h ⁻¹ . In this range, since the V removal reaction proceeds at a reaction temperature of 350 ° C. or higher, the reaction temperature is preferably 350 ° C. or higher. Further, when a heat exchanger is used for the heater 20 that is a heating means of the reactor 1, the combustion exhaust gas 115 can be used for the fluid on the high temperature side. The temperature of the combustion exhaust gas 115 is about 550 ° C., and the reaction temperature is preferably 550 ° C. or less. More preferably, about 450 ° C., which is a realistic temperature at which the mixed fluid 104 can be heated by exchanging heat with the combustion exhaust gas 115, is more preferable.

FIG. 6 shows the relationship between the pressure in the reactor 1 and the V concentration in the reformed oil 108. The temperature of the reactor 1 is 450 ° C. and the residence time is about 30 h ⁻¹ . Although the case where the pressure was 20 MPa was described in this embodiment, it was confirmed that the V concentration in the reformed oil 108 can be lowered below the gas turbine inlet limit value even at 5 to 30 MPa.

  According to the present embodiment, the V concentration contained in the reformed oil can be continuously observed, the V concentration contained in the gas turbine fuel oil 110 can be made less than the gas turbine inlet limit value, and due to high temperature corrosion such as vanadium attack. Shortening of the life of the gas turbine blade can be prevented.

  In this example, a part of the reformed oil 108 was extracted from the upstream of the reformed oil tank 6 to measure the kinematic viscosity, and the V concentration was calculated based on the kinematic viscosity and stored in the reformed oil tank 6. The case of adjusting the V concentration in oil will be described with reference to FIG. Only differences from FIG. 1 will be described, and description of the same parts will be omitted.

  In this system, a reformed oil extraction pipe 9 that is a pipe for extracting the reformed oil 108 is provided upstream of the reformed oil tank 6. As in the case of the first embodiment, the reformed oil 108 separated by the gas-liquid separator 5 is measured in the reformed oil flow meter 73 and then stored in the reformed oil tank 6. A part of the reformed oil 108 is extracted to the kinematic viscosity measuring device 70 by opening the reformed oil extraction valve 15, and the kinematic viscosity is measured. The obtained kinematic viscosity signal is sent to the V concentration controller 71 where the V concentration is calculated.

  The low V concentration oil 112 stored in the low V concentration oil tank 7 is supplied to the reformed oil tank 6 using the low V concentration oil pump 32, and the V concentration in the reformed oil is adjusted. The subsequent steps are the same as in the first embodiment.

  FIG. 8 is a flowchart of the operation / control method in this embodiment, and the operation / control method of the heavy oil reformer will be described in conjunction with FIG.

  Steps S1 to S3 are the same as those in the first embodiment. In step S4, it is confirmed that the V concentration of the reformed oil in the reformed oil tank obtained in step S3 is less than the limit value. If it is less than the limit value, it is not necessary to supply low-V-concentration oil to the reformed oil, and it is not necessary to adjust the water supply pump 30 and the heavy oil supply pump 31, so steps S1 to S9 are repeated. The shorter the measurement interval, the lower the risk of supplying gas turbine fuel oil 110 with a high V concentration to the gas turbine, but the measurement interval can be arbitrarily determined. However, when the flow rates of the water supply pump 30 and the heavy oil supply pump 31 are changed, the time for the water 100 and the heavy oil 101 supplied from the pump to flow out as the reformed oil 108 when the flow rate is changed is set. It is desirable to predict and extract the reformed oil 108 at that time and repeat the procedure from step S1.

  When the V concentration in the reformed oil 108 is higher than the gas turbine inlet limit value, the process proceeds to step S5 and subsequent steps. In step S5, the flow rate of the reformed oil 108 is measured by the reformed oil flow meter 73, and in step S6, the residence time of the mixed fluid 104 in the reactor 1 as shown in FIG. The flow rate setting values of the water supply pump 30 and the heavy oil supply pump 31 are determined using the relationship with the V concentration in the reformed oil 108. In step S7, the flow rate settings of the water supply pump 30 and heavy oil supply pump 31 calculated in step S6 are changed by a signal output from the V concentration adjustment controller 71. As a result, the residence time of the reactor 1 is optimized, and the V concentration in the reformed oil 108 becomes less than the gas turbine inlet limit value.

  Further, in step S8, the flow rate at which the V concentration becomes less than the limit value when the reforming oil 108 and the low V concentration oil 112 are mixed in the reforming oil tank 6 by the V concentration adjusting controller 71 is expressed by the following equation (5). ) To calculate.

Here, F _l is the low V concentration oil 112 flow, F is the flow rate of the reformate 108, c _n vanadium concentration in the reformate 108 during this measurement, c is the vanadium concentration in the low V concentration oil 112 , _Cl is the gas turbine inlet limit value of vanadium concentration.

  In step S9, the liquid level in the reformed oil tank 6 is measured by the reformed oil tank liquid level meter 72, and it is confirmed that the liquid level does not exceed the limit value of the liquid level in the reformed oil tank 6. When the liquid level does not exceed the limit value, the process proceeds to step S10, and the supply of the low V concentration oil 112 to the reformed oil tank 6 is continued. On the other hand, when the liquid level in the reformed oil tank exceeds the limit value, the supply of the low V concentration oil is stopped, and the procedure from step S1 is started again after the measurement cycle time set above.

  According to the present embodiment, the V concentration of the reformed oil 108 can be measured in real time, and the supply amount of the low V concentration oil 112 can be controlled appropriately and promptly. As a result, the V concentration contained in the gas turbine fuel oil 110 can be made less than the gas turbine inlet limit value, and shortening of the life of the gas turbine blade due to high temperature corrosion such as vanadium attack can be prevented. In this embodiment, the kinematic viscosity of the reformed oil before being stored in the reformed oil tank 6 is not measured by measuring the kinematic viscosity by extracting the oil stored in the reformed oil tank and averaging the V concentration. Therefore, the flow rates of the water supply pump 30 and the heavy oil supply pump 31 can be accurately set.

  In this embodiment, a heavy oil-fired gas turbine power generation system including a reformed oil return device that returns a part of light oil used as gas turbine fuel to the low V concentration oil tank 7 will be described with reference to FIG. Only parts different from FIG. 1 will be described, and description of the same parts will be omitted.

  In this system, when the V concentration calculated from the kinematic viscosity of the reformed oil 108 is less than the limit value for supplying to the gas turbine combustor 60, for example, about 0.1 ppm, the gas pressurized by the light oil pump 33 is used. A part of the turbine fuel oil 110 is supplied to the low V concentration oil tank 7 as the stored oil 111 by opening the low V concentration oil tank inlet valve 18. The kinematic viscosity measuring device 70, the V concentration adjusting controller 71, the light oil pump 33, and the low V concentration oil tank inlet valve 18 form a reformed oil return device as referred to in the present invention.

  The stored oil 111 is extracted when the reforming oil tank 108 has a sufficient amount of oil for continuous operation of the gas turbine and the V concentration of the oil in the reforming oil tank 6 is lower than the gas turbine inlet limit value. is there. In particular, the V concentration in the oil in the reformed oil tank 6 is desirably about 0.1 ppm or less.

  According to this embodiment, the reformed oil produced by reforming heavy oil can be stored as low-V-concentration oil, and it is not necessary to purchase fuel more expensive than heavy oil such as light oil or heavy oil A. Good power generation is possible at low cost.

  According to the present invention, the vanadium concentration of the reformed oil is measured on-time in a heavy oil reformer that reforms by mixing and reacting heavy oil with high-temperature and high-pressure water or a gas turbine power generation system equipped with the reformer. It became possible. As a result, the V concentration of the reformed oil can be controlled to suppress corrosion of the gas turbine. According to the present invention, there is also an advantage that the maintenance cycle of the heavy oil reformer can be extended.

1 is a schematic diagram of a heavy oil-fired gas turbine power generation system according to an embodiment of the present invention. The figure which shows the flowchart of the driving | operation and control method in the Example of FIG. The figure which shows the relationship between vanadium density | concentration in modified oil, and kinematic viscosity. The figure which shows the influence of the mixed fluid residence time in a reactor which has on the vanadium density | concentration in reformed oil. The figure which shows the influence of the temperature of the reactor on the vanadium density | concentration in reformed oil. The figure which shows the influence of the pressure of the reactor on the vanadium density | concentration in reformed oil. The schematic of the heavy oil-fired gas turbine power generation system by other Examples of this invention. The figure which shows the flowchart of the driving | operation and control method in the Example of FIG. The schematic of the heavy oil-fired gas turbine power generation system by other Example of this invention.

Explanation of symbols

1 ... Reactor, 2 ... Heavy fraction extractor, 3 ... Heavy fraction collector, 4 ... Decompressor, 5 ... Gas-liquid separator, 6 ... Reformed oil tank, 7 ... Low V concentration oil tank, 9 ... Reformed oil extraction pipe, 12 ... Reducing valve, 13 ... Reactor outlet valve, 14 ... Heavy extraction valve, 15 ... Reformed oil extraction valve, 16 ... Hydrocarbon gas flow control valve, 17 ... Combustor inlet valve, 18 ... Low V concentration oil tank inlet valve, 20 ... Heater, 30 ... Water supply pump, 31 ... Heavy oil supply pump, 32 ... Low V concentration oil pump, 33 ... Light oil pump, 40 ... Water preheater, 41 ... oil preheater, 53 ... chimney, 60 ... gas turbine combustor, 61 ... gas turbine, 62 ... compressor, 70 ... dynamic viscosity measuring device, 71 ... V concentration controller, 72 ... reformed oil tank level gauge, 73 ... reformed oil flow meter, 100 ... water, 101 ... heavy oil, 102 ... high temperature high pressure water, 103 ... high temperature high pressure heavy oil, 104 ... mixed fluid, 105 ... heavy component, 106 ... reformed component, 107 ... hydrocarbon gas, 108 ... reformed oil, 109 ... light oil, 110 ... gas turbine fuel oil, 111 ... stored oil, 112 ... low V concentration oil, 113 ... air, 114 ... combustion gas, 115 ... combustion exhaust gas.

Claims (7)

  In a heavy oil reformer that reforms heavy oil by mixing it with high-temperature and high-pressure water and reacting it, the kinematic viscosity of the resulting reformed oil is measured and the vanadium concentration is calculated from the kinematic viscosity. A heavy oil reformer comprising a vanadium concentration calculating device.   A reactor for reforming by mixing and reacting heavy oil with high temperature and high pressure water, a reformed oil tank for storing the reformed oil reformed in the reactor, and a low vanadium concentration oil to the reformed oil tank A low vanadium concentration oil replenishing device, a kinematic viscosity measuring device for measuring the kinematic viscosity of the reformed oil, a vanadium concentration is calculated from the kinematic viscosity, and the vanadium concentration is stored in the reformed oil tank. A heavy oil reforming apparatus comprising a vanadium concentration adjusting controller for determining an amount of low vanadium concentration oil to be replenished to the reforming oil tank from the amount.   A reactor that reforms heavy oil mixed with high-temperature and high-pressure water and reacts; a kinematic viscosity meter that measures the kinematic viscosity of the reformed oil produced in the reactor; and the vanadium concentration is calculated from the kinematic viscosity. A heavy oil reforming apparatus comprising a vanadium concentration adjusting controller for adjusting a flow rate of a pump for supplying water and heavy oil to the reactor.   A method for controlling a heavy oil reformer comprising a reactor for reforming by mixing heavy oil with high-temperature and high-pressure water, and measuring the kinematic viscosity of the reformed oil produced in the reactor. The vanadium concentration is calculated from the kinematic viscosity, and the set value of the flow rate of water supplied to the reactor and the flow rate of heavy oil is calculated from the obtained vanadium concentration and the amount of reformed oil, and the pump flow rate is changed. A control method for a heavy oil reforming apparatus, characterized in that:   A heavy oil reformer that mixes and reacts heavy oil with high-temperature and high-pressure water to produce reformed oil; a reformed oil tank that stores the reformed oil produced by the heavy oil reformer; A gas turbine power generation device that generates power using the reformed oil supplied from the reformed oil tank as a fuel, a low vanadium concentration oil replenishment device that replenishes the reformed oil tank with a low vanadium concentration oil, and the reforming A kinematic viscosity measuring device for measuring the kinematic viscosity of the reformed oil flowing into the oil tank, a vanadium concentration calculated from the obtained kinematic viscosity, the vanadium concentration and the flow rate of the reformed oil flowing into the reformed oil tank, and A heavy oil-fired gas turbine power generation system comprising a vanadium concentration adjusting controller that determines a replenishment amount of low vanadium concentration oil supplied to the reformed oil tank according to a liquid level of the reformed oil tank.   A heavy oil reformer that mixes and reacts heavy oil with high-temperature and high-pressure water to produce reformed oil; a reformed oil tank that stores the reformed oil produced by the heavy oil reformer; A gas turbine power generation device that generates power using the reformed oil supplied from the reformed oil tank as a fuel, a low vanadium concentration oil tank for replenishing the reformed oil tank with a low vanadium concentration oil, and the heavy oil A part of the reformed oil stored in the reformed oil tank when the vanadium concentration calculated based on the kinematic viscosity measurement result of the reformed oil generated by the refined oil reformer is less than the limit value. A heavy oil-fired gas turbine power generation system comprising a reformed oil return device that returns the low vanadium concentration oil tank.   Heavy oil is mixed with high-temperature high-pressure water and reacted to produce reformed oil, the kinematic viscosity of the resulting reformed oil is measured, the vanadium concentration is calculated from the kinematic viscosity, and the vanadium concentration of the reformed oil is limited A method of using reformed oil, characterized in that when the value exceeds the value, low-vanadium concentration oil is replenished to the reformed oil, and the vanadium concentration is adjusted and supplied to the reformed oil utilization equipment.

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