JPH09189206A - Combined cycle power generation facilities - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out a power generation more effectively by installing an independent crude oil heating furnace as the heating means of the crude oil, when the crude oil is separated to a low boiling point retainer and a high boiling point retainer and the low boiling point retainer is used for the fuel of a gas turbine and the high boiling point retainer is used as the fuel of a boiler for a steam turbine. SOLUTION: A crude oil sent out from a crude oil tank 1 by a crude oil supply pump 2 is heated by crude oil pre-heaters 3-6 and thereafter, it is sent to a distilling column 8 after it is heated upto a prescribed distillation temperature (for example 360 deg.C) finally by a crude oil heating furnace 7 installed independently. The low boiling point retainer is introduced out from the tower top of the distribution tower 8 by the operation of a reflux pump 11 and liquidized through a condenser 9 and sent to a gas turbine fuel tank 12 as a gas turbine fuel by a gas turbine fuel supply pump 10. While, a liquid (high boiling point retainer) introduced out from the column bottom of the distilling column 8 by the operation of a boiler fuel supply pump 13 is press-fed to a boiler fuel tank 14 by a liquid line 24.

Description

Detailed Description of the Invention

[0001]

The present invention relates to an oil-fired gas turbine combined cycle power generation facility.

[0002]

2. Description of the Related Art At present, thermal power generation in Japan mainly uses a method in which a steam turbine is rotated by high-temperature and high-pressure steam generated by a boiler to generate power. Heavy oil and crude oil are mainly used as the boiler fuel, but among them, in the case of crude oil burning, low-sulfur content crude oil with a large amount of wax and a small amount of SOx, such as Minas crude oil and Daqing. Crude oil produced is preferred. In addition, recently, combined cycle power generation equipment using LNG, which is a high-quality fuel, has been adopted.

In the boiler burning of crude oil or heavy oil and power generation by a steam turbine, the thermal efficiency is relatively low at around 40% / HHV standard (HHV: high heating value). On the contrary,
Combined cycle power generation used in LNG-fired is a method of burning fuel in a gas turbine, reburning the high-temperature exhaust gas in a boiler, operating a steam turbine, and generating power again (so-called exhaust gas reburn type), and thermal efficiency is high. Around 48% / HHV standard, dramatically improving.

Therefore, in recent years, from the standpoint of suppressing the increase in petroleum consumption, there is an urgent need to switch to a power generation method with higher thermal efficiency, and the development of the combined cycle power generation is strongly desired. However, in the conventional combined cycle power generation of LNG, LNG is costly to store, and when LNG is supplied to oil-fired power plants, pipeline burying is expensive.

On the other hand, a so-called oil-fired gas turbine combined cycle power generation using crude oil as a fuel
In some cases, the practice was carried out in Europe and the United States. However, there was a problem that many troubles occurred due to impurities contained in crude oil and maintenance cost was increased. In this respect, practical use was difficult. This is because the salt, the vanadium, and the sulfur contained in the crude oil interact with each other to form a substance having a low melting point in the gas turbine and adhere to the blade to cause blade corrosion.

[0006] Therefore, as a fuel for gas turbines, the standard that the content concentration of salt and vanadium is 0.5 ppm or less is generally adopted. However, such as the crude oil from Minas and the crude oil from Daqing mentioned above. Even low-sulfur content crude oil could not meet these standards, and could not be used as it was as a gas turbine fuel for combined cycle power generation with good thermal efficiency. Therefore, as a result, it has been difficult to commercialize oil-fired gas turbine combined cycle power generation using crude oil as fuel for gas turbines.

[0007]

The applicant has proposed, for example, Japanese Patent Application No. Hei.
287504 (JP-A-6-207180)
The desalted crude oil is distilled at a predetermined temperature to separate it into a low boiling fraction and a high boiling fraction, and the low boiling fraction is used as a fuel for a gas turbine, while the high boiling fraction is used for the turbine. An oil-fired gas turbine combined cycle power generation method using crude oil distillation technology, which is used as fuel for a boiler, has been proposed and is being put into practical use.

However, this power generation method requires a heating means for raising the temperature of the crude oil to the predetermined temperature, and a more practical heating means in the system of the power generation facility is desired from the viewpoint of effective use of energy. It had been.

Therefore, the present invention is an oil-fired gas turbine combined cycle power generation facility utilizing crude oil distillation technology, which is equipped with a practical heating means for crude oil distillation and which can realize power generation more efficiently. -The purpose is to provide cycle power generation equipment.

[0010]

In order to achieve the above object, in the combined cycle power generation facility according to claim 1, crude oil is distilled at a predetermined temperature to separate it into a low boiling fraction and a high boiling fraction. In the combined cycle power generation facility using the low boiling point fraction as a gas turbine fuel and the high boiling point fraction as a fuel for a steam turbine boiler, heating for raising crude oil to the predetermined temperature is performed. An independent crude oil heating furnace is provided as a means.

Further, the combined cycle power generation facility according to a second aspect of the present invention is characterized in that a feed water heater for recovering heat from the smoke emitted from the heating furnace to heat the feed water to the boiler is provided.

In the combined cycle power generation facility according to a third aspect of the present invention, the heating means is provided with a heat exchanger for recovering the thermal energy generated in the gas turbine or the boiler.

The combined cycle power generation facility according to claim 4 is characterized in that a heat exchanger for recovering heat from the exhaust gas of the gas turbine is provided as the heating means.

The combined cycle power generation facility according to a fifth aspect of the invention is characterized in that a heat exchanger for recovering heat from the smoke emitted from the boiler is provided as the heating means.

The combined cycle power generation facility according to claim 6 is characterized in that a heat exchanger for recovering heat from the steam extracted from the steam turbine is provided as the heating means.

The combined cycle power generation facility according to a seventh aspect is characterized in that a heat exchanger for recovering heat from the convection heat transfer section in the boiler is provided as the heating means.

The combined cycle power generation facility according to claim 8 is characterized in that, as the heating means, a mixing heater for mixing the steam extracted from the steam turbine with crude oil is provided.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

(First Example) First, a first example, which is an embodiment of the invention described in claim 1, will be described with reference to FIGS. 1 and 2. Here, FIG. 1 shows a configuration of a fuel supply system in the combined cycle power generation facility of this example, and FIG. 2 shows a configuration of a power generation system in the combined cycle power generation facility.

As shown in FIG. 1, the main component of the fuel supply system of this power generation facility is a crude oil tank 1, a crude oil supply pump 2, crude oil preheaters 3 to 6, a crude oil heating furnace 7, a distillation column 8, Condenser 9, gas turbine fuel supply pump 10, recirculation pump 11, gas turbine fuel tank 12, boiler fuel supply pump 13, boiler fuel tank 14, feed water preheater 1
5 and 16 are provided.

The crude oil tank 1 preferably stores desulfurized low-sulfur crude oil. As the low-sulfur crude oil, it is needless to say that the sulfur content is as small as possible because the desulfurization step of the exhaust gas can be simplified, but usually the sulfur content is 1% by weight or less, more preferably 0.5% by weight or less. Less than wt% crude oil is used. Examples of such crude oil include the crude oil from Minas and the crude oil from Daqing mentioned above. Since most of the sulfur content contained in crude oil is separated by distillation described below, it is not always necessary to use the low-sulfur crude oil as described above as the crude oil of the present invention.

Further, the salt content in the crude oil tends to remain on the high boiling fraction side due to the distillation in the distillation column 8, and depending on the temperature conditions of the distillation, the salt content of the low boiling fraction may be the above-mentioned standard value (0 0.5 ppm) or less, the crude oil of the present invention is not necessarily desalted.

When the desalination treatment is carried out in the same equipment, a heating means for heating crude oil to about 80 to 150 ° C. is provided in advance, and, for example, a well-known desalting means such as a disorouter is used if necessary. A plurality of stages may be provided. This dissoluter mixes heated crude oil and fresh water,
Water droplets are aggregated and separated by applying an electrostatic voltage of about 10,000 volts.In order to reduce the viscosity of crude oil and to facilitate separation due to the difference in specific gravity between water and crude oil, pre-heat crude oil as described above. Is preferred.

Incidentally, the above-mentioned diso router is arranged on the way of the crude oil supply line 21 for feeding crude oil from the crude oil tank 1 to the crude oil heating furnace 7, and some of the crude oil preheaters 3 to 6 are subjected to the desalting treatment. It can also function as a heating means.

The crude oil supply pump 2 sends out the crude oil in the crude oil tank 1 and sends it through the crude oil supply line 21 to the crude oil heating furnace 7 and further to the distillation column 8. In this case, the crude oil heating furnace 7 is composed of crude oil, light oil, kerosene, naphtha, L prepared separately from crude oil in the crude oil tank 1 or power generation fuel.
The PG is burned to heat the crude oil sent to the distillation column 8 to a predetermined distillation temperature.

The distillation temperature (crude oil temperature at the inlet of the distillation column 8) is adjusted so that the content of vanadium, salt or sulfur in the low boiling point fraction, which serves as fuel for the gas turbine, becomes a desired value. The temperature may be determined according to the properties and the like, but is, for example, about 340 ° F to 650 ° F.

Crude oil preheaters 3, 4 or crude oil preheaters 5, 6
In this case, heat is recovered in two stages from the gas derived from the top of the distillation column 8 (that is, low-boiling fraction) or the liquid derived from the bottom of the distillation column 8 (that is, high-boiling fraction). , A heat exchanger that sequentially heats the crude oil before being sent to the crude oil heating furnace 7, thereby increasing the heating efficiency of the crude oil and reducing the burden on the crude oil heating furnace 7 and the heat exchangers 52 to 55 described later. .

In the distillation column 8, in this case, the low-boiling-point fraction derived from the top of the column by the reflux pump 11 and the reflux line 22 is returned as a liquid, and comes into contact with the generated vapor of crude oil in a countercurrent manner to separate it. Is a distillation column of a method of increasing the temperature (so-called rectification column), and specifically, for example, a bubble plate column perforated plate column or a packed column can be used.

The condenser 9 is connected to the distillation column 8 by the liquid line 23.
Is a tube type heat exchanger for finally cooling and condensing a gas (that is, a low-boiling fraction) derived from the top of the column. In this case, gas that has not been completely condensed (off-gas) is discharged from the top. You. Then, the low boiling point fraction of the crude oil condensed in the condenser 9 is extracted from the bottom, a part thereof is returned to the distillation column 8 by the reflux pump 11 and the reflux line 22, and the rest is gas turbine fuel. The turbine fuel supply pump 10 sends the gas to the gas turbine fuel tank 12.

The boiler fuel supply pump 13 pumps the liquid (that is, high boiling point fraction) derived from the bottom of the distillation column 8 to the boiler fuel tank 14 through the liquid line 24. The feed water preheaters 15 and 16 generate heat from the gas (that is, a low boiling point fraction) derived from the top of the distillation column 8 or the liquid (that is, a high boiling point fraction) derived from the bottom of the distillation column 8. It is a heat exchanger that heats boiler feed water that is collected and sent to the boiler 35 described later.

Next, as shown in FIG. 2, the main body of the power generation system of this power generation facility is the turbine main body 31,
A gas turbine 34 including a compressor 32 and a combustor 33;
A boiler 35, a steam turbine 36, a condenser 37, and an economizer 38 are provided. Here, the gas turbine 34 causes the combustor 33 to contact the gas turbine fuel supplied from the gas turbine fuel tank 12 via the supply line 41 with the air compressed by the compressor 32 and burn the gas turbine fuel.
This is a well-known one that generates power by rotating the output shaft by expansion of the combustion gas in the turbine 31, and in this case, in order to form an exhaust gas reburn type combined cycle, exhaust gas after combustion (residual oxygen concentration of about 11% to 15% Temperature of about 580 ° C.) is supplied to the boiler 35 via the exhaust gas line 42.

The boiler 35 is, for example, a Stirling boiler and has a convection heat transfer section 35a. The boiler 35 is supplied with the high-boiling fraction in the boiler fuel tank 14 through the supply line 43 as fuel, and the smoke exhausted from the boiler 35 via the smoke exhaust line 44 is omitted from the drawing. After passing through the denitration device and the dust collecting device, the heat is recovered by the economizer 38 and guided to a chimney (not shown) to be released to the atmosphere. Depending on the properties of the crude oil, a desulfurizer for removing sulfur (especially sulfur dioxide) from the flue gas may be provided.

The economizer 38 is a heat exchanger that heats the boiler feed water by the heat of the smoke emitted from the boiler 35 in order to improve the thermal efficiency of the steam cycle. Note that although omitted in FIG. 2 because it becomes complicated, the steam turbine 36 has a configuration including a plurality of stages of steam turbines such as high pressure, medium pressure, and low pressure in order to form a so-called reheat cycle. In addition, in order to form a so-called regeneration cycle, it is naturally preferable to provide a plurality of bleed water supply heaters to ensure a high thermal efficiency. In this case, the feed water preheaters 15 and 16 (not shown in FIG. 2) shown in FIG. 1 also heat the feed water sent from the condenser 37 to the boiler 35 to further improve the thermal efficiency of the steam cycle.

According to the combined cycle power generation facility constructed as described above, the crude oil is highly practically distilled and the fuel (low boiling point fraction) suitable for the gas turbine 34 is continuously supplied. While avoiding the problem of corrosion of the blade metal of the gas turbine 34 due to such impurities, highly efficient power generation utilizing the advantages of combined cycle power generation becomes practical.

That is, the crude oil sent from the crude oil tank 1 by the crude oil supply pump 2 is heated to, for example, about 270 ° C. by the crude oil preheaters 3 to 6 and then finally heated by the crude oil heating furnace 7 independently provided in this case. It is heated to a predetermined distillation temperature (for example, 360 ° C.).

At this time, the heating amount of the crude oil heating furnace 7 is not affected by the fluctuation of the power generation load (that is, the fluctuation of the output of the gas turbine 34, etc.), and the heating amount can be adjusted by an independent operation. Crude oil tank 1 according to fluctuations in power generation load
Even when it is necessary to change the amount of crude oil supplied from, the distillation temperature of the distillation column 8 can always be stably maintained at the optimum temperature.

If the distillation temperature is stably maintained at the predetermined distillation temperature in this way, vanadium and salt of the low boiling point fraction (that is, gas turbine fuel) derived from the top of the distillation column 8 will be obtained. Content temperature is 0.5ppm, which is the standard value.
(Wt.) Or less, and the sulfur content is 0.5 to 0.05 wt. % Or less.

That is, most of the heavy metals remain in the high boiling fraction of about 900 ° F. or higher in atmospheric distillation, and the salt also remains in the high boiling fraction of 420 ° C. (788 ° F.) or higher. In this case, most of these impurities remain on the high boiling point fraction side and are contained in the boiler fuel sent to the boiler fuel tank 14. The boiler 35
Since heavy oil and the like have been burned in the past, fuel containing such impurities can be operated without any problem.

Thus, the fuel having a sufficiently low impurity temperature is continuously supplied from the gas turbine fuel tank 12 to the gas turbine 34, and the high-temperature exhaust gas discharged from the gas turbine 34 is introduced into the boiler 35 and reburned. As a result, highly efficient combined cycle power generation using crude oil that can be easily stored can be operated reliably without causing troubles due to impurities in the crude oil.

(Second Example) Next, a second example, which is an example of an embodiment of the invention described in claim 2, will be described with reference to FIG. Here, FIG. 3 is a diagram showing a configuration of a fuel supply system in the combined cycle power generation facility of the present example. FIG.
The same components as those in the first example shown in FIG. 2 are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 3, this power generation facility is characterized in that it is provided with a feed water heater 51 which heats the feed water to the boiler 35 by recovering heat from the smoke emitted from the crude oil heating furnace 7. As a result, for example, the amount of air extracted from the steam turbine 36 can be further reduced, the thermal efficiency in the steam cycle shown in FIG. 2 can be improved, the power generation output can be further improved, and the thermal energy generated in the crude oil heating furnace 7 can be increased. Effective use is planned.

(Third Example) Next, a third example, which is an example of one embodiment of the invention described in claims 3 to 7, will be described with reference to FIG. Here, FIG. 4 is a diagram showing a configuration of a power generation system in the combined cycle power generation facility of the present example. The same components as those of the above-described first example shown in FIGS. 1 and 2 are designated by the same reference numerals, and the description thereof will be omitted.

This power generation equipment, as shown in FIG. 4, serves as heating means for raising the temperature of the crude oil to the above-mentioned distillation temperature.
A heat exchanger 52 connected to the exhaust gas line 42 for recovering heat from the exhaust gas of the gas turbine 34, and a flue gas discharge line 4
4 and the heat exchanger 53 that recovers heat from the smoke of the boiler 35, and the heat exchanger 54 that connects to the extraction line 45 and recovers heat from the steam extracted from the steam turbine 36.
And a heat exchanger 55 for recovering heat from the convection heat transfer section 35a in the boiler 35.

The heat exchangers 52 to 55 do not necessarily have to be all provided, and any one or several kinds may be provided. Further, these heat exchangers 52 to 55 may be provided in series in the crude oil supply line 21 with respect to the crude oil heating furnace 7, or instead of the crude oil heating furnace 7, they are provided on the crude oil supply line 21. May be.

In any case, since the heat recovery targets of the heat exchangers 52 to 55 are all sufficiently high in temperature, the crude oil can be easily heated to the above-mentioned distillation temperature. That is, the exhaust gas of the gas turbine 34 is 58
The temperature is about 0 ° C, and the smoke emitted from the boiler 35 is economizer 3
8 is about 370 ℃ in the upstream, steam turbine 3
6 (eg high pressure turbine) is 380 steam extracted
C., and the convection heat transfer section 35a in the boiler 35 has a high temperature of about 1000.degree.

In the case of the power generation equipment of this example, the heat exchanger 52
By providing ~ 55, it is possible to reduce the load of the independent heating furnace 7 or to reduce the number of the independent heating furnace 7 in some cases while effectively utilizing the thermal energy generated in the facility. It is possible to reduce the consumption of crude oil and to simplify the equipment.

According to the specifications of the existing boiler (heat-resistant specifications, etc.) of this type of power generation equipment, it is necessary to cool the exhaust gas of the gas turbine 34 to about 400 ° C., and a cooler was provided for that purpose. In particular, when the heat exchanger 52 is provided, the heat exchanger 52 also functions as a conventional cooler, so that the facility can be further simplified.

(Fourth Example) Next, a fourth example, which is an example of an embodiment of the invention described in claim 8, will be described with reference to FIG. Here, FIG. 5 is a diagram showing a configuration of a power generation system in the combined cycle power generation facility of the present example. The same components as those of the above-described third example shown in FIGS. 1 and 4 are designated by the same reference numerals, and the description thereof will be omitted.

The power generation equipment of this example, as shown in FIG.
As a heating means for raising the temperature of the crude oil to the above-mentioned distillation temperature, a mixing heater 56 for mixing the steam extracted from the steam turbine 36 by the extraction line 46 into the crude oil is provided in place of the heat exchanger 54 described above. Is characterized by.

The mixing heater 56 may be provided together with any of the heat exchangers 52 to 55 described above, or the mixing heater 56 may be provided without the heat exchangers 52 to 55.
A mode in which only one is provided may be used. Also, this mixing heater 56
May be provided in series with the crude oil heating furnace 7 in the crude oil supply line 21, or may be provided on the crude oil supply line 21 instead of the crude oil heating furnace 7. In any case, the steam extracted from the steam turbine 36 (for example, the high-pressure turbine) has a temperature of about 380 ° C., which is sufficiently high, so that the crude oil can be heated to the above-mentioned distillation temperature.

In the power generation equipment of this example, by providing the mixing heater 56 as in the case of the above-mentioned third example, the thermal energy generated in the equipment can be effectively utilized and the load of the independent heating furnace 7 can be reduced. Or, in some cases, the number of independent heating furnaces 7 can be reduced, so that the crude oil consumption can be further reduced as a whole and the facility can be simplified.

Moreover, in the power generation equipment of this example, the high temperature steam mixed in the crude oil functions as a so-called stripping gas in the distillation column 8 (has an action of lowering the partial pressure of the vapor phase in the distillation column 8). The degree of separation of distillation is further increased, and a good fuel having an impurity concentration of the regulation value or less can be more stably supplied to the gas turbine 34. In addition,
When the steam (moisture) mixed in the fuel interferes with combustion or the like in the gas turbine 34, a separator may be provided to separate the moisture from the low boiling fraction after distillation.

[0053]

According to the combined cycle power generation facility of claim 1, crude oil is distilled at a predetermined temperature to separate a low boiling fraction and a high boiling fraction, and the low boiling fraction is gas turbine. In a combined cycle power generation facility using the high boiling fraction as a fuel for a steam turbine boiler, an independent crude oil heating furnace is used as a heating means for raising the crude oil to the predetermined temperature. Provided.

Therefore, the heating amount of the heating means is not affected by the fluctuation of the power generation load (that is, the fluctuation of the output of the gas turbine or the like), and the heating amount can be adjusted by an independent operation. Even when it is necessary to change the fuel supply amount according to the above, the distillation temperature can always be stably maintained at the optimum temperature.

Therefore, the crude oil is highly practically distilled, and the fuel (low boiling point fraction) reaching the gas turbine is continuously supplied to cause corrosion of the blade metal of the gas turbine due to the impurities as described above. While avoiding problems
Practical high-efficiency power generation that takes advantage of combined cycle power generation.

Further, in the combined cycle power generation facility according to the second aspect of the present invention, since the feed water heater for recovering the heat from the smoke of the heating furnace to heat the feed water to the boiler is provided, for example, steam for heating the feed water. It is possible to reduce the amount of bleed air from the turbine, improve the thermal efficiency in the steam cycle and further improve the power generation output, and also make effective use of the thermal energy generated in the crude oil heating furnace, further reducing crude oil consumption. Can also contribute.

Further, according to the combined cycle power generation facility of claims 3 to 8, a heat exchanger for recovering heat from the exhaust gas of the gas turbine is used as a heating means for raising the temperature of the crude oil to the predetermined temperature. Heat exchanger for recovering heat from flue gas of the boiler, heat exchanger for recovering heat from steam extracted from the steam turbine, heat exchanger for recovering heat from convection heat transfer section in the boiler, or extraction from the steam turbine A mixing heater for mixing the produced steam with the crude oil was provided. For this reason, it is possible to reduce the burden on the independent crude oil heating furnace or to reduce the number of independent crude oil heating furnaces in some cases while effectively utilizing the thermal energy generated in the facility, and to further reduce the consumption of crude oil. It is possible to reduce the number and simplification of the equipment.

Particularly, when a heat exchanger for recovering heat from the exhaust gas of the gas turbine is provided as described in claim 4, a cooler for cooling the exhaust gas of the gas turbine in accordance with the heat-resistant specifications of the boiler and the like is provided. Since it is unnecessary or the load can be reduced, the facility can be further simplified.

When a mixing heater for mixing the steam extracted from the steam turbine with the crude oil is provided as described in claim 8, the high temperature steam mixed with the crude oil functions as a so-called stripping gas. Therefore, the degree of separation of distillation is further increased, and there is an inherent effect that a good fuel having an impurity concentration of a regulated value or less can be more stably supplied to the gas turbine.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a fuel supply system of a combined cycle power generation facility according to a first example of the present invention.

FIG. 2 is a diagram showing a power generation system of the combined cycle power generation facility.

FIG. 3 is a diagram showing a configuration of a fuel supply system of a combined cycle power generation facility according to a second example of the present invention.

FIG. 4 is a diagram showing a configuration of a power generation system of a combined cycle power generation facility that is a third example of the present invention.

FIG. 5 is a diagram showing a configuration of a power generation system of a combined cycle power generation facility that is a fourth example of the present invention.

[Explanation of symbols]

 1 Crude Oil Tank 1 2 Crude Oil Supply Pump 2 3-6 Crude Oil Preheater 7 Crude Oil Heating Furnace 8 Distillation Tower 9 Condenser 10 Gas Turbine Fuel Supply Pump 11 Reflux Pump 12 Gas Turbine Fuel Tank 34 Gas Turbine 35 Boiler 36 Steam Turbine 37 Condensate Vessel 51 water heater 52-56 heat exchanger 56 mixing heater

Claims (8)

[Claims] 1. A crude oil is distilled at a predetermined temperature to separate it into a low boiling fraction and a high boiling fraction, the low boiling fraction is used as a fuel for a gas turbine, and the high boiling fraction is a steam turbine. A combined cycle power generation facility for use as a fuel for a boiler, wherein an independent crude oil heating furnace is provided as a heating means for raising the temperature of the crude oil to the predetermined temperature. 2. The combined cycle power generation facility according to claim 1, further comprising a feed water heater for recovering heat from the smoke emitted from the heating furnace to heat the feed water to the boiler. 3. Crude oil is distilled at a predetermined temperature to separate it into a low boiling fraction and a high boiling fraction, the low boiling fraction is used as a fuel for a gas turbine, and the high boiling fraction is a steam turbine. In a combined cycle power generation facility used as a fuel for a boiler for heating, a heat exchanger for recovering thermal energy generated in the gas turbine or the boiler is provided as a heating means for raising the crude oil to the predetermined temperature. Combined cycle power generation facility characterized by. 4. The combined cycle power generation facility according to claim 3, wherein a heat exchanger for recovering heat from the exhaust gas of the gas turbine is provided as the heating means. 5. The combined cycle power generation facility according to claim 3, wherein a heat exchanger for recovering heat from the smoke emitted from the boiler is provided as the heating means. 6. The combined cycle power generation facility according to claim 3, wherein a heat exchanger for recovering heat from the steam extracted from the steam turbine is provided as the heating means. 7. The combined cycle power generation equipment according to claim 3, wherein a heat exchanger for recovering heat from the convection heat transfer section in the boiler is provided as the heating means. 8. A crude oil is distilled at a predetermined temperature to separate it into a low boiling point fraction and a high boiling point fraction, the low boiling point fraction is used as a fuel for a gas turbine, and the high boiling point fraction is a steam turbine. In a combined cycle power generation facility used as fuel for a steam boiler, as a heating means for raising the temperature of the crude oil to the predetermined temperature, a combined heater for mixing the steam extracted from the steam turbine with the crude oil is provided. Characteristic combined cycle power generation equipment.