JP4791841B2 - Power generation system - Google Patents

Description

  The present invention relates to a power generation system that combines a steam turbine power generation device that is operated by steam generated by a steam generation device such as a boiler that uses exhaust heat of an incinerator and a gas turbine power generation device.

  FIG. 9 is a diagram showing a schematic configuration of a power generation system that generates power using a conventional waste incinerator. In FIG. 9, reference numeral 1 designates waste 2 such as general waste and combustion air 3 to be discarded. It is an incinerator for combusting the object 2, and the ash 4 and the combustion exhaust gas 5 are generated by the combustion of the waste 2. A boiler 6 that generates steam is provided in the incinerator 1. The steam 7 generated in the boiler 6 is introduced into a steam heater 8, where it is heated by a gas turbine exhaust gas 22 described later, and then supplied to the steam turbine 9. The steam supplied to the steam turbine 9 performs work in the steam turbine 9 while expanding, and drives the generator 10 connected to the steam turbine 9 to generate power. The steam, which has been worked in the steam turbine 9 and has become lower temperature and pressure, is cooled by the condenser 11 with cooling water such as seawater or river water, and then condensed, and then boosted by the feed water pump 12 to the boiler 6. It is recirculated as feed water 40. The combustion exhaust gas 5 drops in temperature and flows out as combustion furnace exhaust gas 13. The description of the subsequent configuration relating to the combustion furnace exhaust gas 13 is omitted.

  Incidentally, a gas turbine 14 is combined with the steam turbine power generator. That is, the gas turbine 14 includes a compressor 15, a combustor 16, and an expander 17. The compressor 15 compresses the second combustion air 19 and supplies it as compressed air to the combustor 16. A fuel gas 21 such as city gas is supplied to the combustor 16 through a flow control valve 20, and burns with compressed air there. The combustion exhaust gas generated in the combustor 16 becomes a high temperature and a high pressure, is introduced into the expander 17, and performs the work of rotating the expander 17 while expanding. The expander 17 and the compressor 15 are connected by a shaft, and the compressor 15 is rotated by the rotation of the expander 17, and further, the second generator 18 generates power.

  The combustion exhaust gas that has worked in the expander 17 becomes a low temperature and low pressure, becomes a gas turbine exhaust gas 22, flows out of the expander 17, flows into the steam heater 8, and heats the steam supplied from the boiler 6. , The temperature is lowered and the steam heater exhaust gas 23 is discharged from the steam heater 8.

  In this way, the gas turbine 14 is combined with the incinerator 1, and the steam generated in the boiler 6 is heated by the steam heater 8, so that the steam supplied to the steam turbine 9 becomes higher in temperature, and the output and efficiency of the steam turbine 9 are increased. Is improved. However, since the power demand is small at night and the power is surplus, the gas turbine 14 is often stopped at night. On the other hand, the waste treatment is continuously operated all day, and it is not easy to start and stop the incinerator 1, so the incinerator 1 is continuously operated. Moreover, since the combustion exhaust gas 5 of the incinerator 1 needs to be cooled, the steam turbine 9 needs to be operated. Therefore, it is normal that only the power generation by the power generator 10 is performed at night, and the power generation by the power generator 10 and the second power generator 18 is performed at other times.

  As described above, in the conventional apparatus, the steam turbine 9 operates at or near the rating at night, but the power generation amount at night may be further reduced. Therefore, there is a demand for improving the efficiency for obtaining the power generation amount per day by turning the surplus power generation amount at night to power generation in the time zone other than the night.

  Further, reduction of carbon dioxide, which is the main cause of global warming, has been promoted, but the steam heater exhaust gas 23 contains a large amount of carbon dioxide but has a low concentration and a high temperature. It is difficult to recover carbon dioxide. On the other hand, since the gas turbine 14 is installed not for waste disposal but for improvement of the power generation system, it is desirable to collect as much carbon dioxide generated by the power generation system as possible. That is, it is desirable not to release carbon dioxide other than carbon dioxide generated during the waste treatment process to the outside.

  In view of such a point, the present invention aims to solve the above two problems.

A first invention includes a steam generator, a steam turbine, and a gas turbine, and the steam generated by the steam generator is heated by the exhaust gas of the gas turbine, and then flows into the steam turbine. In a power generation system configured to generate power with a generator connected to each of turbines, steam reforming a raw material containing one or more of hydrocarbon, ether, or alcohol using heat from a heat source in the steam generator only set a reformer for generating a reformed gas by causing said reformed gas or the varying reformed gas gas, mixed with different fuels as fuel for some number or the total number of the gas turbine The extraction steam of the steam turbine is used as reforming steam .

A second invention includes a steam generator, a steam turbine, and a gas turbine, and the steam generated by the steam generator is heated with the exhaust gas of the gas turbine, and then flows into the steam turbine. In a power generation system configured to generate power with a generator connected to each of turbines, steam reforming a raw material containing one or more of hydrocarbon, ether, or alcohol using heat from a heat source in the steam generator Providing a reformer that generates reformed gas, and mixing the reformed gas or a gas obtained by changing the reformed gas with a different fuel to form a partial number or a total number of fuels of the gas turbine; After separating carbon dioxide from the reformed gas or a gas obtained by changing the reformed gas, only hydrogen is taken out and the hydrogen is removed from the gas. Characterized in that the fuel of the turbine.

A third invention includes a steam generator, a steam turbine, and a gas turbine, and the steam generated by the steam generator is heated by the exhaust gas of the gas turbine, and then flows into the steam turbine. In a power generation system configured to generate power with a generator connected to each of turbines, steam reforming a raw material containing one or more of hydrocarbon, ether, or alcohol using heat from a heat source in the steam generator Providing a reformer that generates reformed gas, and mixing the reformed gas or a gas obtained by changing the reformed gas with a different fuel to form a partial number or a total number of fuels of the gas turbine; When the power demand of the power supply destination is below a predetermined value, the operation of the gas turbine is stopped and the operation for producing the reformed gas is performed. When the power demand exceeds a predetermined value, performing the operation of the gas turbine, characterized by stopping the operation of producing the reformed gas.

  The surplus power generation at night can be used for power generation during non-night time periods to improve the efficiency of obtaining power generation per day and release carbon dioxide other than carbon dioxide generated by the steam generator to the outside world. You can avoid it.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. In the figure, the same parts as those in FIG. 9 are denoted by the same reference numerals, and detailed description thereof is omitted.

  A reformer 24 containing a catalyst is installed inside the incinerator 1, and city gas 27 and reforming steam 28 are supplied through a valve 25 and a valve 26, respectively. A reforming raw material 29 mixed with the quality steam 28 is allowed to flow into the reformer 24. In the reformer 24, the reforming raw material 29 is heated to an appropriate temperature by the combustion exhaust gas 5, steam reformed, becomes a reformed gas 30, and is introduced into the reformed gas tank 32 through the valve 31. Accordingly, the reformed gas 64 is supplied to a required location via the valve 33.

  Therefore, this embodiment is mainly operated in two types of operation modes, for example, one is performed at night and the other is performed in a time zone other than night.

  The following operation is carried out at night.

  That is, the gas turbine 14 is not operated. The steam turbine 9 may be operated or stopped, but when the steam turbine 9 is operated, the steam 7 flowing out from the boiler 6 is heated by the steam heater 8 because there is no gas turbine exhaust gas 22. There is no.

  On the other hand, the reforming raw material 29 is heated to an appropriate temperature by the combustion exhaust gas 5, undergoes steam reforming, and flows out as reformed gas 30. The reformed gas 30 is composed of carbon monoxide, carbon dioxide, hydrogen, steam, and methane, and the main components are hydrogen and carbon monoxide. The reformed gas 30 is introduced and stored in a reformed gas tank 32 via a valve 31.

  In addition, the following operation will be carried out during non-night time.

  That is, steam 7 generated in the boiler 6 is supplied to the steam turbine 9 via the steam heater 8 via the valve 34 to operate the steam turbine 9, and the fuel gas 21, for example, city gas is supplied to the gas turbine via the valve 20. Then, the gas turbine 14 is operated. Thus, the steam from the boiler 6 is heated by the steam heater 8 and the steam supplied to the steam turbine 9 becomes higher in temperature, and the output and efficiency of the steam turbine 9 are improved. At this time, the city gas 27 and the reforming steam 28 do not flow into the reformer 24 and steam reforming is not performed.

  Therefore, since the gas turbine 14 is not operated at night as described above, the amount of power generation at night is reduced, and the power generation amount can be reduced to zero by stopping the nighttime steam turbine 9. Then, the surplus energy at night is stored as an energy difference between the reformed gas 30 stored in the reformed gas tank 32 and the city gas 27 supplied to the reformer 24, and the energy is effectively utilized. be able to.

  In the above-described embodiment, the city gas 27 is supplied to the reformer 24. However, any gas or liquid that sufficiently contains one or more types of hydrocarbons may be used. For example, hydrocarbon materials such as kerosene, natural gas, gasoline, naphtha, and LPG may be used. Further, alcohol such as ethanol or ether may be used, and two or more raw materials may be mixed. In the case of city gas, it is used after desulfurization so as not to deteriorate the performance of the reformer 24. Moreover, although the reformer 24 is installed in the incinerator 1, any structure that uses heat from the combustion exhaust gas 5 may be used, and for example, a structure that receives heat via the boiler steam 7 may be used. Moreover, although the fuel of the incinerator 1 is the waste 2, other fuels may be used. Further, in the above-described embodiment, the reformed gas 30 is stored in the reformed gas tank 32. However, a gas obtained by changing the reformed gas 30, for example, a gas reacted with a carbon monoxide converter or the reformed gas 30 is used. Hydrogen produced on the basis of may be stored. When the reformed gas 64 is to be extracted from the reformed gas tank 32 and used, it can be used by opening the valve 33. This use is not limited to fuel use, nor is the use time zone limited.

  Incidentally, another gas turbine may be installed in parallel with the gas turbine 14.

  FIG. 2 is a diagram showing a second embodiment of the present invention, in which the reformed gas 54 is supplied from the reformed gas tank 32 to the combustor 16 of the gas turbine 14 as fuel. The other points are the same as those of the first embodiment shown in FIG.

  Therefore, in the second embodiment, driving is mainly performed in two types of operation modes, for example, one is performed at night and the other is performed in a time zone other than night. Night driving is the same as in the first embodiment.

  In a time zone other than nighttime, the reformed gas 64 extracted from the reformed gas tank 32 flows into the combustor 16 as fuel, and the gas turbine 14 and the steam turbine 9 are also operated. Further, the city gas 27 and the reforming steam 28 are not supplied to the reformer 24 and steam reforming is not performed. Therefore, in the second embodiment, since the gas turbine 14 is not operated at night, the power generation amount at night is reduced, and the power generation amount can be reduced to zero by stopping the steam turbine 9 at night. Therefore, the surplus energy at night is accumulated as an energy difference between the reformed gas 64 used as fuel and the city gas 27 supplied to the reformer 24, and this is stored as gas in a time zone other than nighttime. Since it is turned to turbine fuel, the efficiency for obtaining the amount of generated power per day can be improved. Further, since the gas turbine fuel is not city gas but is a reformed gas 30 (64) produced through a desulfurization process, sulfide oxide is not included in the gas turbine exhaust gas 22 or the steam heater exhaust gas 23, and sulfide oxide is not present in the outside. It will not be released.

  FIG. 3 is a diagram showing a third embodiment. A second gas turbine 14a is installed in parallel with the gas turbine 14 in the second embodiment, and is connected to the second gas turbine 14a. The steam heater 8 a is branched from the steam 7 and supplied with the steam 7 a via the valve 34 a, and the steam heated there is introduced into the steam turbine 9. The points other than the fuel of the second gas turbine 14a are the same as those shown in FIG.

  In the second gas turbine 14a, the fuel gas 21 such as city gas is supplied to the combustor 16a of the gas turbine 14a through the valve 20a as in the first embodiment, and the combustor 16 of the gas turbine 14 is supplied. Is supplied with a reformed gas 64.

  Therefore, the gas turbine 14 and the second gas turbine 14a are not operated at night, and the steam turbine 9 may be operated or stopped. In a time zone other than nighttime, the reformed gas 64 extracted from the reformed gas tank 32 is caused to flow into the combustor 16 of the gas turbine 14 and the gas turbine 14 is operated. On the other hand, the fuel gas 21 such as city gas is introduced into the combustor 16a of the second gas turbine 14a via the valve 21a, and the second gas turbine 14a is operated. Further, the gas turbine exhaust gases 22 and 22a of the gas turbine 14 and the second gas turbine 14a are caused to flow into the corresponding steam heaters 8 and 8a. The steam 7 generated in the boiler 6 branches and flows into the steam heaters 8 and 8a corresponding to the gas turbine 14 and the second gas turbine 14a, respectively, and is heated by the gas turbine exhaust gas 22 and 22a, respectively. Become. The turbine steams merge and flow into the steam turbine 9, and the steam turbine 9 is operated. The city gas 27 and the reforming steam 28 do not flow into the reformer 24 and steam reforming is not performed.

  Therefore, this embodiment also has the same effect as the second embodiment.

  By the way, a gas turbine that allows the reformed gas 64 to flow in as a fuel may be installed in parallel with the gas turbine 14, and a third gas gas 21 such as city gas flows in parallel to the second gas turbine 14a. A gas turbine may be installed.

  FIG. 4 is a diagram showing a fourth embodiment. A reformed gas 64 extracted from the reformed gas tank 32 and a fuel gas 21 supplied through the valve 20, for example, city gas, are mixed to form a mixed fuel 65. Thus, the mixed fuel 65 is used as the fuel for the gas turbine 14. The other points are the same as those of the second embodiment shown in FIG. In the above embodiment, city gas is supplied, but LPG or kerosene may be used. Moreover, you may combine with 3rd Embodiment.

  Therefore, in a time zone other than nighttime, the reformed gas 64 extracted from the reformed gas tank 32 and the fuel gas 21 such as city gas are mixed into the mixed fuel 65, and the mixed fuel 65 is used as the combustor 16 of the gas turbine 14. The gas turbine 14 is operated.

  Therefore, in this embodiment, the power generation amount of the gas turbine 14 and the power generation amount of the steam turbine 9 can be adjusted by the flow rate ratio of the fuel gas 21 such as the city gas and the reformed gas 64.

  By the way, the gas turbine is designed according to the fuel to be used. For example, the combustor 16 is different for the city gas alone and the reformed gas alone, and it is difficult to operate the reformed gas 64 as a fuel in a gas turbine that is generally spread. However, if the reformed gas 64 is mixed with the city gas, a gas turbine for city gas alone can be used depending on the mixing ratio.

  FIG. 5 is a diagram showing a fifth embodiment of the present invention, in which the second branched steam 36 is branched from the steam 7 through the pressure reducing valve 35 and merges with the city gas 27 to become the reforming raw material 29. . Further, water supply 38 is supplied to the downstream side of the condenser 11 through a valve 37. The other points are the same as those of the second embodiment shown in FIG.

  Thus, the first branch steam 39 flows into the steam heater 8, and the second branch steam 36 is depressurized by the pressure reducing valve 35 to the same or close pressure as the city gas 27 supplied to the reformer 24. Then, it is mixed with the city gas 27 to be a reforming raw material 29 and introduced into the reformer 24. On the other hand, feed water 38 having the same mass flow rate as that of the second branch steam 36 is added to the condensate downstream of the condenser 11. Since the feed water 38 added to the condensate is water that has passed through the soft water device, and the condensate is originally water that has passed through the soft water device, all of the boiler feed water 40 supplied to the boiler 6 is water that has passed through the soft water device.

  In this embodiment, the steam 7 generated in the boiler 6 is branched into a first branch steam 39 and a second branch steam 36, and a part of the steam 7 generated in the boiler 6 is supplied to the steam heater 8. Although it is allowed to flow, all of the steam 7 generated in the boiler 6 may flow into the reformer 24. When all the steam 7 generated in the boiler 6 is caused to flow into the reformer 24, the steam turbine 9 is stopped without being operated while the steam reforming is being performed.

  By the way, since steam reforming requires steam generated from water that has passed through a soft water device, it is necessary to transport water with a pump, pass through the soft water device, and generate steam by heating. However, in the fifth embodiment, the second branch steam 36, which is a part of the steam 7 from the boiler 6 generated from the boiler feed water 40, which is water passed through the water softener, is used as reforming steam. By using it, an appropriate vapor can be easily introduced.

  FIG. 6 is a view showing a sixth embodiment of the present invention, and the steam turbine 9 is provided with a structure for extracting the extracted steam 41. The extracted steam 41 passes through the pressure reducing valve 42 and merges with the city gas 27 to become the reforming raw material 29. The other points are the same as those of the fifth embodiment shown in FIG.

  Therefore, while steam reforming is being performed, the steam turbine 9 is operated, a part of the steam is extracted from the steam turbine 9, and the extracted steam 41 is supplied to the reformer 24. That is, the pressure of the extracted steam 41 is the same as or higher than the pressure of the city gas 27, and is decompressed by the pressure reducing valve 42 to the same or close pressure as that of the city gas 27, and then mixed with the city gas 27 and reformed raw material. 29, the reforming raw material 29 is supplied to the reformer 24. On the other hand, feed water 38 having the same mass flow rate as the extraction steam 41 is added to the condensate downstream of the condenser 11.

  Therefore, the present embodiment has the same effect as the fifth embodiment. In particular, the extracted steam 38 works inside the steam turbine 9 until it is extracted after flowing into the steam turbine 9. Therefore, the power generation amount can be increased as compared with the case where the boiler steam 7 is branched.

  FIG. 7 is a diagram showing a seventh embodiment of the present invention, in which the reformed gas 30 is passed through a carbon dioxide separator 43 and a hydrogen separator 44 in order, and a hydrogen tank 45 is connected to the hydrogen separator 44. Has been.

  Therefore, at night, the reformed gas 30 produced by the reformer 24 is caused to flow into the carbon dioxide separator 43 to separate the carbon dioxide 46, and the separated gas 47 other than the carbon dioxide 46 is separated from the hydrogen separator 44. To introduce. There are several methods for separating the carbon dioxide 46 by the carbon dioxide separator 43. For example, a hot potassium carbonate system is used. The separated carbon dioxide 46 is recovered and used, for example, for dry ice for cooling food and drink. The gas from which carbon dioxide 46 has been separated is separated into hydrogen 48 and gas 49 other than hydrogen by a method such as a pressure swing adsorption method in a hydrogen separator 44. The hydrogen 48 flows into the hydrogen tank 45 and is stored. Although it is desirable to install a carbon monoxide converter upstream of the carbon dioxide separator 43 and allow the reformed gas 30 to flow into the carbon monoxide converter, this is not shown. In this case, the reformed gas 30 is brought to an appropriate temperature state, and most of the carbon monoxide reacts with the steam and changes to carbon dioxide, and at the same time, most of the steam changes to hydrogen. Others are the same as in the fifth embodiment.

  In a time zone other than nighttime, the hydrogen fuel 50 extracted from the hydrogen tank 45 is caused to flow into the combustor 16 and the gas turbine 14 is operated. The steam turbine 9 is operated, and the steam 7 generated in the boiler 6 is heated by the steam heater 8, while the city gas 27 and the steam 36 do not flow into the reformer 24 and hydrogen production is not performed.

  By the way, in the conventional technology, the carbon dioxide contained in the steam heater exhaust gas 23 has a low carbon dioxide concentration and a high temperature because the steam heater exhaust gas 23 also contains substances such as nitrogen and residual oxygen. Therefore, it is difficult to collect. On the other hand, in the embodiment in which the gas turbine fuel is hydrogen fuel, the gas turbine exhaust gas 22 does not contain carbon dioxide, and the steam heater exhaust gas 23 does not contain carbon dioxide. Carbon dioxide is generated during the process. Therefore, in the present embodiment, carbon dioxide generated in the hydrogen production process is recovered, and the hydrogen fuel 50 that does not contain a substance having a carbon atom such as carbon monoxide or methane is burned in the combustor 16. Does not occur. Therefore, carbon dioxide other than carbon dioxide generated by the incinerator 1 is not released to the outside. That is, carbon dioxide other than carbon dioxide generated in the waste treatment process is not released to the outside world.

  Further, the amount of power generation at night is reduced, and if the steam turbine 9 is stopped at night, the amount of power generation can be reduced to zero, and the energy difference between the nighttime surplus energy and the city gas 27 supplied to the reformer 24 is reduced. Since it is accumulated as a part of the gas turbine fuel and is used as gas turbine fuel in a time zone other than nighttime, the efficiency for obtaining the amount of generated power per day can be improved. In addition, since the gas turbine fuel is not city gas but hydrogen fuel 50, sulfide oxide is not included in the combustion exhaust gas from the combustor 16 or the steam heater exhaust gas 23, which is one of the main causes of acid rain in the outside. No sulfide oxide is released.

  FIG. 8 is a diagram showing an eighth embodiment of the present invention, in which hydrogen is produced using electrolysis of water. That is, the incinerator 1 is provided with an electrolyzer 51 that is operated by electric power generated by the generator 10 without installing a reformer. Water 53 is supplied to the electrolysis device 51 via a valve 52, and water is electrolyzed into oxygen 60 and hydrogen 61 using electricity from the generator 10, and the oxygen 60 is supplied to an oxygen tank via a valve 54. The hydrogen 61 is stored in the hydrogen tank 57 via the valve 56. The oxygen 60 stored in the oxygen tank 55 is supplied as combustion oxygen 62 to the compressor 15 via the valve 58, and the hydrogen 61 stored in the hydrogen tank 57 is combusted via the valve 59 as the hydrogen fuel 63. It is configured to be supplied to the container 16.

  Therefore, the gas turbine 14 is not operated at night, and the steam turbine 9 is operated. However, since the gas turbine exhaust gas 22 is not present, the steam generated in the boiler 6 is not heated by the steam heater 8.

  In a time zone other than nighttime, the oxygen 60 in the oxygen tank 55 flows into the compressor 15 as combustion oxygen 62 through the valve 58 as the combustion oxygen 62, and the hydrogen 61 in the hydrogen tank 57 serves as the hydrogen fuel 63. The gas turbine 14 is operated by flowing into the combustor 16 through 59. The steam turbine 9 is also operated, and the steam generated in the boiler 6 is heated by the steam heater 8.

  Thus, by using the amount of power generated by the power generator 10 at night for hydrogen production, the amount of power transmitted to power consumers can be reduced to zero. In addition, since the energy generated by nighttime power generation is turned to gas turbine fuel at times other than nighttime, the efficiency for obtaining the amount of generated power per day can be improved. Furthermore, since carbon dioxide is not generated from other than the incinerator 1, carbon dioxide other than carbon dioxide generated in the waste treatment process is not released to the outside world, and there is no need to perform carbon dioxide recovery. In addition, since the gas turbine fuel is not city gas but hydrogen fuel, sulfide oxide is not included in the steam heater exhaust gas 23, and sulfide oxide, which is one of the main causes of acid rain, may be released to the outside world. Absent. Further, since combustion is performed not by air but by combustion oxygen in the combustor 16, nitrogen oxides are not generated in the combustor 16, nitrogen oxides are not included in the steam heater exhaust gas 23, and the main cause of acid rain Nitrogen oxide, which is one of the above, is not released to the outside world.

  In the first to seventh embodiments, the city gas is introduced into the reformer. However, in the eighth embodiment, no reformer is provided, so that a substance such as hydrocarbon, alcohol or ether is unnecessary. It is.

  Next, a ninth embodiment will be described. In the first to eighth embodiments, operation is mainly performed in two types of operation modes, and operation mode switching is performed as follows. That is, when the power demand of the power supply destination is equal to or less than a predetermined value, the operation of the gas turbine 14 or the second gas turbine 14a is stopped, and an operation mode in which hydrogen production is performed is set. When the power demand exceeds a predetermined value, the operation mode is set to operate the gas turbine 14 or the gas turbine 14a.

  Therefore, in the time zone in which the power demand is small and the power is surplus, the amount of extra power generation is reduced, and if the steam turbine 9 is stopped, the power generation amount can be reduced to zero. The surplus energy at night is the reformed gas 30, or the energy difference between the hydrogen 50 and the city gas 27, or the energy of the hydrogen 60 obtained by electrolysis, is accumulated and can be used effectively.

  Moreover, in each said embodiment, although what used the incinerator was shown, another steam generator can also be used.

BRIEF DESCRIPTION OF THE DRAWINGS Schematic which shows the 1st Embodiment of this invention. Schematic which shows the 2nd Embodiment of this invention. Schematic which shows the 3rd Embodiment of this invention. Schematic which shows the 4th Embodiment of this invention. Schematic which shows the 5th Embodiment of this invention. Schematic which shows the 6th Embodiment of this invention. Schematic which shows the 7th Embodiment of this invention. Schematic which shows the 8th Embodiment of this invention. Schematic which shows a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Incinerator 2 Waste 3 Combustion air 5 Combustion exhaust gas 6 Boiler 7 Steam 8 Steam heater 9 Steam turbine 10 Generator 11 Condenser 12 Feed water pump 14 Gas turbine 15 Compressor 16 Combustor 17 Expander 18 Second Generator 19 Second combustion air 21 Fuel gas 22 Gas turbine exhaust gas 23 Steam heater exhaust gas 24 Reformer 27 City gas 28 Reforming steam 29 Reforming raw material 30 Reformed gas 32 Reformed gas tank 35 Pressure reducing valve 36 Branch Steam 38 Feed water 40 Boiler feed water 41 Extraction steam 43 Carbon dioxide separator 44 Hydrogen separator 45 Hydrogen tank 51 Electrolytic device 55 Oxygen tank 57 Hydrogen tank 60 Oxygen 61 Hydrogen 62 Combustion oxygen 63 Combustion hydrogen 64 Reformed gas 65 Mixed fuel

Claims (4)

A steam generator, a steam turbine, and a gas turbine, and the steam generated by the steam generator is heated by the exhaust gas of the gas turbine, and then flows into the steam turbine, and is connected to each of the steam turbine and the gas turbine. In a power generation system designed to generate electricity with a generator,
Setting the reformer a raw material containing one or more of the hydrocarbons or ethers or alcohols using heat to generate a reformed gas by causing steam reformed from the heat source in the steam generator,
The reformed gas or a gas obtained by changing the reformed gas is mixed with a different fuel to form a partial or total number of fuels of the gas turbine,
A power generation system, wherein the steam extracted from the steam turbine is used as reforming steam . A steam generator, a steam turbine, and a gas turbine, and the steam generated by the steam generator is heated by the exhaust gas of the gas turbine, and then flows into the steam turbine, and is connected to each of the steam turbine and the gas turbine. In a power generation system designed to generate electricity with a generator,
Providing a reformer that generates reformed gas by steam reforming a raw material containing one or more of hydrocarbon, ether or alcohol using heat from a heat source in the steam generator;
The reformed gas or a gas obtained by changing the reformed gas is mixed with a different fuel to form a partial or total number of fuels of the gas turbine,
After separating carbon dioxide from the reformed gas or a gas obtained by changing the reformed gas, only hydrogen is taken out, and the hydrogen is used as a fuel for the gas turbine . A steam generator, a steam turbine, and a gas turbine, and the steam generated by the steam generator is heated by the exhaust gas of the gas turbine, and then flows into the steam turbine, and is connected to each of the steam turbine and the gas turbine. In a power generation system designed to generate electricity with a generator,
Providing a reformer that generates reformed gas by steam reforming a raw material containing one or more of hydrocarbon, ether or alcohol using heat from a heat source in the steam generator;
The reformed gas or a gas obtained by changing the reformed gas is mixed with a different fuel to form a partial or total number of fuels of the gas turbine,
When the power demand of the power supply destination is below a predetermined value, the operation of the gas turbine is stopped, the operation for producing the reformed gas is performed, and the operation of the gas turbine is performed when the power demand exceeds the predetermined value. An electric power generation system that performs and stops the operation for producing the reformed gas . The power generation system according to any one of claims 1 to 3, wherein the steam generator is configured to use heat generated when the fuel is burnt in the incinerator.

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