WO2021176666A1

WO2021176666A1 - Autonomous and regional distributed power production/supply system

Info

Publication number: WO2021176666A1
Application number: PCT/JP2020/009501
Authority: WO
Inventors: 山本　泰三; 常孝安ヵ川; 晃二深田; 直史阪口
Original assignee: 株式会社エコ・サポート
Priority date: 2020-03-05
Filing date: 2020-03-05
Publication date: 2021-09-10
Also published as: JP7199771B2; CN115210982A; JPWO2021176666A1

Abstract

This autonomous and regional distributed power production/supply system comprises: a plurality of gas turbine combined cycle power generation systems that are respectively disposed in a plurality of plantations and that generate power by using gaseous fuel and liquid fuel produced by the plantations; and a power transmission network comprising first power transmission lines that transmit, to power consumption locations, power from the gas turbine combined cycle power generation systems respective to the plurality of plantations, and second power transmission lines that connect the plurality of first power transmission lines to each other. Each of the gas turbine combined cycle power generation systems transmits power to the plantation in which said gas turbine combined cycle power generation systems is disposed. The plurality of gas turbine combined cycle power generation systems transmit power to each of the plurality of plantations via the power transmission network.

Description

Independent and locally distributed power production and supply system

This disclosure relates to a self-sustaining and locally distributed power production and supply system.

Production activities in plantations have expanded since before the Industrial Revolution in order to export high value-added agricultural products such as coffee, tea, sugar, tobacco, spices and cotton to Europe and other countries to generate profits.

Evergreen broad-leaved forests grow well in tropical rainforests and moist areas. For this reason, in Malaysia and Indonesia, large-scale natural rubber forest plantations have developed since the beginning of the 20th century, and industries that export high-value-added natural rubber as product raw materials to Europe and the United States have developed.

After that, the production of vegetable oil by oil palm, which is highly productive and profitable as a large-scale modern industry such as transportation within farms, and palm oil, which is edible oil and energy, became the main products of plantations, and varieties were improved and cultivated. With the expansion of the area, the production volume has increased.

In particular, Indonesia has a large land area and a large population, so the production of palm oil has continued to increase, and the annual production has increased to more than 40 million tons. This was achieved by increasing the yield by breeding, improving the workability of harvesting fruits (FFB) at a reachable height, and expanding the cultivated area. Due to its high economic efficiency, palm oil has exceeded one-third of the world market for vegetable oils.

From a long-term perspective, the Indonesian government has indicated two policies to promote global warming countermeasures due to the limited palm oil market for food. Using fruits (FFB: Fresh Fruits Bunch) that can be stably produced from oil palm trees for 20 years as a raw material resource, _{we will create stable renewable energy with zero CO 2} emission evaluation and export it to the world to secure profits and global warming. Contribute to measures against global warming. Currently, palm oil can be produced in excess of 20% from fruits (FFB), and the rest is only partially used.

Fruits (FFB) are harvested daily and trucked to the Palm Factory (MILL). To produce palm oil, a large amount of steam is injected. A considerable amount of electricity and clean water are required to produce vegetable oil in a palm factory. Using solids that can be produced from fruits (FFB) as fuel, high-temperature steam is produced to extract (squeeze) palm oil crude oil (CPO: Crude Palm Oil). When this is refined for food, palm oil is produced. It is purified as wastewater (POME: Palm Oil Mill Effect) containing a large amount of solids and oil, and released into public water bodies. On the other hand, the biogas generated from wastewater _{contains about 60% of CH 4} (methane gas) and about 40% of _{CO 2.}

Since CH ₄ has a global warming potential that is _{more than 20 times that of CO 2} , the Indonesian government and the Malaysian government have made an international commitment as a basic policy to use it as fuel for prisoners and thermal power generation. .. For this reason, efforts are underway to recover biogas by installing a rubber film in the pond in the final process of wastewater. In a standard palm plantation, development efforts have begun in recent years to install a power generation facility with a gas engine of about 1 MW in the palm plantation and use it in-house as electric power in the palm plantation, or to sell the electric power to an electric power company. , There are many issues. If the amount of CO ₂ in the gas component is high, stable operation of the gas engine becomes unstable, and constant inspection and management is required for the operation of the gas engine. Therefore, on-site engineering is required. It has not been put into practical use and stable operation.

Gas turbines (hereinafter referred to as "GT") are widely used in developed countries such as Japan for large-scale private power generation of 5 MW or more in factories and the like. Gas turbines have become widespread for cogeneration, which is used as heat and steam due to high-temperature exhaust gas. Even in Japan, cogeneration is rarely applied to small-scale 1MW class power generation such as that used in palm plantations in consideration of operation and maintenance. Similarly, Indonesia, which has little information, did not have the opportunity to deeply consider gas turbine power generation. We are aiming to put a general-purpose gas engine into practical use from a European manufacturer, but we are seeking a breakthrough in an unstable situation.

Conventionally, a power generation system equipped with a gas turbine combined cycle power generation system (hereinafter referred to as "GTCC") is known. As the GTCC, for example, the device described in Patent Document 1 is known. In the apparatus described in Patent Document 1, a gas turbine and a steam turbine (hereinafter referred to as “ST”) are combined to generate electricity.

A gas turbine is a rotating body similar to a water turbine or a wind turbine, and is a system that extracts stable force that has been widely used in the past. In order to popularize the highly efficient and ideal sustainable advanced S-GTCC (hereinafter referred to as "S-GTCC") system based on the concept of Zero Waste including waste heat, from demonstration to practical equipment. It will be expanded to. Through this initiative, a clear path toward the realization of the goals of SDGs (Sustainable Development Goals), such as the development and utilization of stable renewable energy with zero _{CO 2 emission evaluation, will be revealed.}

It takes at least five years to plan and build a palm plantation. Indonesia, which has a large land area and a large population, has abundant suitable land for palm plantations. When planning and constructing palm plantations, it is essential to secure electricity and water. Fruits (FFB) cannot be harvested at palm plantations until three years have passed since the seedlings were planted. Fruits (FFB) can be harvested from oil palm for 20 years, so assuming a model farm of ^{200 km 2} ^{, 10 km 2} seedlings will be planted every year. From this, from the plan to the operation of the palm factory (MILL), the operator of the palm plantation receives power from the power grid of the electric power company by the transmission line. In the initial stage, there is little demand for electricity around the palm farm, so it is important to plan and develop long-term electricity infrastructure.

Japanese Unexamined Patent Publication No. 2007-315213

The oil squeezing factory of the palm plantation (palm factory: called MILL) is the core facility of the palm plantation, and electricity and clean water are indispensable for stable and continuous operation throughout the year. The plan for the palm plantation is to grow oil palm trees from seedlings and plant them for 20 years. Fruits (FFB) can be harvested about 3 years after planting, and the yield will drop after 20 years of harvesting. Therefore, the forest will be cut down and replanted with newly improved seedlings for growing. Therefore, in the palm factory, a place where electricity and clean water can be secured is an essential condition for planning and construction. However, when planning and constructing a palm plantation, the electric power company supplies electricity to the palm plantation, but at this point, the demand for electricity is low, including in the surrounding area.

Indonesia has 700 palm plantations already in operation to produce palm oil, except for Java Island, which has a large population and a well-developed industry including agriculture. There is a wastewater pond adjacent to the Palm Factory (MILL), and the final pond of the wastewater (POME) of multiple ponds is covered with a rubber film to generate biogas in an anaerobic state where oxygen is insufficient. Since this amount is stably generated throughout the year, about 1 MW or more has been established, and a technical system for collecting and utilizing this has been established, and dozens or more have already been installed and introduced. If biogas is captured and 700 self-sustaining and locally distributed power plants are put into operation in the country, a power transmission and distribution network suitable for this will be established, which will greatly contribute to the country's economic growth.

The Indonesian government has been capturing biogas since the early 2010s and working on power generation using a gas engine, but it has not yet been put into practical use. Although details will be described later, a gas turbine power generation system that recovers exhaust heat and generates power in combination with a steam turbine (ST) is optimal.

Here, in a self-sustaining and locally distributed electric power production and supply system, it is desired that the fuel required for GTCC can be easily obtained and the electric power can be stably supplied to the electric power consumption area. An object of the present disclosure is to easily obtain the fuel required for GTCC and to stably supply electric power to a power consuming area in a self-sustaining and locally distributed electric power production and supply system.

The self-sustaining and locally distributed electric power production and supply system according to one form of the present disclosure is arranged in each of a plurality of plantations, and a plurality of gas turbines that generate power using the gaseous fuel and the liquid fuel produced in the plantations. A transmission having a combined cycle power generation system, a first transmission line for transmitting power from a gas turbine combined cycle power generation system in each of a plurality of plantations to a power consumption area, and a second transmission line for connecting the plurality of first transmission lines to each other. Equipped with a net, the plantation is a palm plantation that grows abra palm, and each of the gaseous fuel and liquid fuel is a fuel produced from the fruits harvested in the plantation, and multiple gas turbine combined cycle power generation Each of the systems uses the heat of the first gas turbine that operates using gaseous fuel, the second gas turbine that operates using liquid fuel, and the exhaust gas exhausted from the first gas turbine and the second gas turbine. The gas turbine combined cycle power generation system includes a waste heat recovery boiler to be recovered and a steam turbine that operates by utilizing the heat recovered by the waste heat recovery boiler, and the gas turbine combined cycle power generation system is arranged. Power is sent to the plantations, and the multiple gas turbine combined cycle power generation systems send power to each of the multiple plantations via the transmission network.

This self-sustaining and locally distributed power production and supply system is equipped with a plurality of gas turbine combined cycle power generation systems as S-GTCC. The gas turbine combined cycle power generation system is installed in a plantation and uses the gaseous fuel and liquid fuel produced in the plantation to generate electricity. As a result, the fuel required for the gas turbine combined cycle power generation system can be easily obtained. In addition, this self-sustaining and locally distributed electric power production and supply system has a first transmission line that sends electric power from a gas turbine combined cycle power generation system in each of a plurality of plantations, and a first transmission line that connects a plurality of first transmission lines to each other. It has a power grid with two power lines. As a result, for example, even if it becomes difficult or impossible to send power from the gas turbine combined cycle power generation system in some plantations to the power consumption area, power is supplied from the gas turbine combined cycle power generation system in other plantations to the power consumption area. Can be sent. That is, it is possible to back up the power supply. Therefore, according to this self-sustaining and locally distributed electric power production and supply system, electric power can be stably supplied to the electric power consumption area.

Work on the demonstration and dissemination of the power generation system by S-GTCC in order to optimize the power generation by the gas turbine in the palm plantation. At the palm plantation, in addition to biogas (gas fuel), palm oil crude oil (CPO) can be produced and supplied in large quantities as liquid fuel. A stable supply of electric power is an essential requirement. Two fuels, gas fuel and liquid fuel, can be used as fuel for the gas turbine. For this reason, one or two fuels, gas fuel and liquid fuel, are used to generate electricity as the optimum power generation system in the palm plantation.

In the self-sustaining and locally distributed power production and supply system according to one embodiment of the present disclosure, the exhaust heat recovery boiler has a denitration catalyst that removes NOx in the exhaust gas and a sensor that measures the NOx concentration in the exhaust gas. However, the exhaust heat recovery boiler may lower the temperature of the exhaust gas to the atmospheric temperature by recovering the latent heat of the water vapor in the exhaust gas, and may recover the water generated by the recovery of the latent heat of the water vapor. According to this configuration, the heat of the exhaust gas can be sufficiently recovered by lowering the temperature of the exhaust gas to the atmospheric temperature. Further, the water vapor in the exhaust gas can be recovered as water, and the water can be effectively used.

GTCC produces steam with a gas turbine (GT) and an exhaust heat recovery boiler, and generates electricity with the steam turbine. In this case, it is desirable to thoroughly recover and utilize the exhaust heat energy in the atmosphere based on the concept of Zero Waste. Make effective use of the clean water collected at the same time. For this purpose, NOx (nitrogen oxide) generated in the exhaust gas accompanying the combustion of fuel is thoroughly removed by using a denitration catalyst.

In the self-sustaining and locally distributed power production and supply system according to one form of the present disclosure, the gas turbine combined cycle power generation system in each of the plurality of plantations sends power to the local power supply network via the power transmission network and transmits the power. The network may be configured to be incorporated and transferred to the local power supply network. According to this configuration, as described above, it is possible to back up the power supply and realize a stable power supply, and to convert the power to the local power supply network.

The self-sustaining and locally distributed power generation and supply system according to one form of the present disclosure is a gas fuel and a liquid fuel having a zero _{CO 2 emission rating produced by fruits from each of a plurality of palm plantations, which are Abra palm plantations.} The transmission network comprises a plurality of gas turbine combined cycle power generation systems that generate power using at least one of them, and a transmission network that sends each of the power generated by the plurality of gas turbine combined cycle power generation systems to a local power supply network. It is configured so that it can be incorporated and transferred to the local power supply network.

Power is generated using one or two of gas fuel and liquid fuel, which are stable renewable energies with zero _{CO 2} emissions from palm plantations, to build a self-sustaining and locally distributed power generation system, and long-term and wide area. Power production, supply, and utilization will be possible. Electricity cannot be stored, and it is necessary to respond flexibly and appropriately according to demand. For this purpose, private electric wires will be installed between multiple palm plantations for mutual power interchange and backup. This makes it possible to economically and stably produce, transmit, distribute, and use electric power when and where it is needed, when and where it is needed. This system is a power production / transmission / distribution system that can be used in an integrated manner with the transmission lines of electric power companies. It should be noted that the S-GTCC can sufficiently transmit and distribute power in cooperation with an electric power company or the like from the viewpoint of stability of large-scale power supply to power consumption areas.

According to the present disclosure, in a self-sustaining and locally distributed power generation system equipped with GTCC, it is possible to easily obtain the fuel required for GTCC and to stably supply electric power to a power consuming area.

FIG. 1 is a schematic configuration diagram showing an S-GTCC according to an embodiment. FIG. 2 shows the S-GTCC (O1 in FIG. 2), the conventional GTCC, the thermal power generator, and the nuclear power generator in FIG. 1 when the exhaust heat amount of the S-GTCC (O2 in FIG. 2) of the comparative example is 100. It is a figure which shows the relative exhaust heat amount of each of. FIG. 3 is a schematic view showing a self-sustaining and locally distributed power generation system according to an embodiment. FIG. 4 is a schematic view showing the plantation of FIG. FIG. 5 is a cross-sectional view showing a biogas captivity device in the wastewater pond of FIG.

Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. In the following description, the same code will be used for the same element or the element having the same function, and duplicate description will be omitted.

FIG. 1 is a schematic configuration diagram showing a GTCC (gas turbine combined cycle power generation system) 1. As shown in FIG. 1, the GTCC 1 includes a power generation device 2, a power generation device 3, an exhaust heat recovery boiler 4, and a power generation device 5.

The power generation device 2 includes a combustor 21, a GT (first gas turbine) 22, an air compressor 23, and a generator 24. The combustor 21 uses gaseous fuel as fuel to generate high-temperature combustion gas, and supplies the generated combustion gas to GT 22. Gaseous fuel is a fuel of CO ₂ emission zero rating produced fruit harvested in oil palm plantations, which will be described later, as a raw material (CO ₂ CO ₂ free evaluated not emit). The GT 22 rotates by the action of the combustion gas to extract power. That is, the GT 22 operates using gaseous fuel. The air compressor 23 and the generator 24 are connected to the GT 22. The air compressor 23 rotates according to the rotation of the GT 22, compresses the air, and supplies the air to the combustor 21. The generator 24 rotates according to the rotation of the GT 22 to generate electricity.

The power generation device 3 includes a combustor 31, a GT (second gas turbine) 32, an air compressor 33, and a generator 34. The combustor 31 uses liquid fuel as fuel to generate high-temperature combustion gas, and supplies the generated combustion gas to the GT 32. The liquid fuel is a fuel with a zero _{CO 2} emission evaluation, which is produced from fruits harvested at a palm plantation, which will be described later. The GT 32 rotates by the action of the combustion gas to extract power. That is, the GT 32 operates using liquid fuel. The air compressor 33 and the generator 34 are connected to the GT 32. The air compressor 33 rotates according to the rotation of the GT 32, compresses the air, and supplies it to the combustor 31. The generator 34 rotates according to the rotation of the GT 32 to generate electricity.

The exhaust heat recovery boiler 4 has a closed structure. The exhaust heat recovery boiler 4 includes a heat exchanger 41, a denitration catalyst 42, a sensor 43, a sensor 44, and a condensed water recovery unit 45. The exhaust heat recovery boiler 4 lowers the temperature of the exhaust gas to the atmospheric temperature by recovering the latent heat of water vapor in the exhaust gas, and recovers the water generated by the recovery of the latent heat of water vapor.

The heat exchanger 41 is arranged in the housing 46. The heat exchanger 41 recovers the heat of the exhaust gas exhausted from the GT 22 and the GT 32. The heat exchanger 41 exchanges heat using water (here, clean water) or water vapor as a heat medium. The high-pressure steam obtained by the heat exchanger 41 is supplied to ST51, which will be described later. The exhaust gas from GT22 and GT32 passes through the exhaust heat recovery boiler 4 and is heat-exchanged, and then exhausted to the atmosphere. The heat exchanger 41 adjusts the temperature of the exhaust gas at the outlet of the housing 46 by recovering the latent heat of the water vapor in the exhaust gas. The heat exchanger 41 can reduce the temperature of the exhaust gas to the outside air temperature by sufficiently exchanging heat. This is the S-GTCC (O1) of FIG. The S-GTCC (O2) in FIG. 2 is applied when a large-scale natural gas / LNG for diffusing exhaust gas into the atmosphere is used as fuel by recovering exhaust heat to an exhaust gas temperature of about 50 ° C.

The denitration catalyst 42 is arranged in the housing 46. The denitration catalyst 42 removes NOx in the exhaust gas from the power generation device 2 and the power generation device 3. The denitration catalyst 42 is a dry denitration catalyst of the selective catalytic reduction method (SCR method). The denitration catalyst 42 has a honeycomb structure. The denitration catalyst 42 is formed of, for example, TIO _2- supported vanadium pentoxide (V ₂ O ₅ ) or TiO _2- supported copper oxide (CuO). The denitration catalyst 42 has a sufficient surface area for the denitration reaction.

The sensor 43 is provided on the upstream side of the denitration catalyst 42. The sensor 44 is provided on the downstream side of the denitration catalyst 42. The sensor 43 and the sensor 44 continuously measure the NOx concentration in the exhaust gas. As each of the sensor 43 and the sensor 44, for example, an infrared analyzer or a batch type analyzer may be used. As each of the sensor 43 and the sensor 44, for example, a widely used general-purpose gas measuring instrument may be used.

The condensed water recovery unit 45 collects and stores the condensed water generated by the recovery of latent heat by the heat exchanger 41 in the housing 46. The condensed water recovery unit 45 is not particularly limited, and various known configurations can be used.

The power generation device 5 has an ST (steam turbine) 51 and a generator 52. The ST51 rotates by the action of high-pressure steam supplied from the heat exchanger 41 to extract power. That is, the ST 51 operates by utilizing the heat recovered by the exhaust heat recovery boiler 4. The generator 52 is connected to the ST 51. The generator 52 rotates according to the rotation of ST51 to generate electricity.

FIG. 2 shows the S-GTCC1 (illustrated O1), the conventional GTCC, the thermal power generator system, and the nuclear power generator system, respectively, when the exhaust heat amount of the S-GTCC (illustrated O2) of the comparative example is 100. It is a figure which shows the relative exhaust heat amount. As shown in FIG. 2, there are three types of GTCC. The amount of exhaust heat of S-GTCC1 is about 20%. The amount of heat exhausted from the conventional GTCC is about 200%. The amount of heat exhausted from the system of a thermal power generator by a steam turbine (ST) that uses coal or petroleum as fuel is about 400%. The amount of exhaust heat of the nuclear power generator system is about 550%. As described above, the energy efficiency of S-GTCC1 is the best among the plurality of power generation methods.

FIG. 3 is a schematic diagram showing a self-sustaining and locally distributed electric power production and supply system (hereinafter referred to as “electric power supply system”) 10. The power supply system 10 is used in a plurality of palm plantations (plantations) 11. Palm plantation 11 is a plantation for cultivating oil palm. The power supply system 10 includes a plurality of GTCCs 1 arranged in each of the plurality of palm plantations 11 and a power transmission network 12. Each GTCC1 generates electricity by using the gaseous fuel and the liquid fuel produced in the palm plantation 11 where the GTCC1 is arranged. A plurality of GTCC1s may be arranged in one palm plantation 11.

The power grid 12 has a plurality of first power transmission lines 13 and one second power transmission line 14. The first transmission line 13 transmits electric power from the GTCC 1 in each of the plurality of palm plantations 11 to the power consuming area. The second transmission line 14 connects a plurality of first transmission lines 13 to each other. A plurality of insulating insulators 14a are provided on the second transmission line 14. "Electric power consumption area" means an urban area or the like that requires electric power.

The power transmission network 12 is connected to the power transmission and distribution network (regional power supply network) 61 of the electric power company. The S-GTCC 1 in each of the plurality of palm plantations 11 transmits electric power to the transmission and distribution network 61 of the electric power company via the transmission network 12. The transmission and distribution network 61 of the electric power company has a main trunk line 62, a trunk line 63, and a transformer 64. A plurality of insulating insulators 62a are provided on the main trunk line 62. A plurality of insulating insulators 63a are provided on the trunk line 63. The transformer 64 is provided between the main trunk line 62 and the trunk line 63.

The transmission network 12 is connected to the transmission and distribution network 61 of the electric power company. The second transmission line 14 is connected to the main line 63 and the main line 65 by the first transmission line 13 drawn from the electric power company to each palm plantation. A plurality of insulating insulators 65a are provided on the trunk line 65.

The transmission network 12 is configured to be incorporated and transferred to the transmission and distribution network 61 of an electric power company. The first transmission line 13 is, for example, a 6 kV overhead wiring 60 mm ² . The second transmission line 14 is, for example, a 6 kV overhead wiring 80 mm ² . The main trunk line 62 is, for example, a 22 kV overhead wiring 80 mm ² . The trunk line 63 is, for example, a 6 kV overhead wiring 80 mm ² . The transformer 64 is, for example, a 22 kV / 6 kV three-phase transformer. Since the transmission network 12 has the same specifications as the trunk line 63, it can be transferred to the transmission and distribution network 61 of the electric power company.

The GTCC1 can send electric power to the palm plantation 11 where the GTCC1 is located via the transmission line (transmission and distribution network 61) of the electric power company. Further, the plurality of GTCC 1s transmit electric power to each of the plurality of palm plantations 11 via the power transmission network 12. In other words, one GTCC1 sends power not only to the palm plantation 11 where the one GTCC1 is arranged, but also to other palm plantations 11.

FIG. 4 is a schematic view showing the palm plantation 11. As shown in FIG. 4, there is a wastewater pond 8 in the palm plantation 11. There may be multiple wastewaters from the oil mill (MILL), and although Fig. 4 is simplified, there are actually multiple wastewater ponds. FIG. 5 is a cross-sectional view showing a final wastewater pond 8 of a plurality of wastewater ponds. As shown in FIG. 5, the wastewater pond 8 is a pond formed on the ground. The wastewater pond 8 stores products from the oil squeezing device. A wall 81 extending over the entire circumference of the wastewater pond 8 is provided at the edge of the wastewater pond 8. A roof 82 is provided above the wall 81. A gas fuel supply device 7 is connected to the wall 81. The waste water pond 8, the wall 81 and the roof 82 constitute a storage device 80. The waste water pond 8, the wall 81 and the roof 82 form a space Z.

In the waste water pond 8, the product is naturally decomposed and gaseous fuel is generated in an anaerobic state without oxygen. The gaseous fuel is a biogas containing _{methane (CH 4} ), CO _{2 and the like.} Space Z is filled with gaseous fuel. Gaseous fuel, after H _{2 S} or the like is removed by the removing device 71 of the gas fuel supply apparatus 7 is supplied to GT combustor 21 by pumping machine 72. The wastewater from the wastewater pond 8 (the product after natural decomposition) is discharged to the public water area after confirming that it is purified and conforms to the wastewater standard.

The power supply system 10 of FIG. 3 shown in the present embodiment includes GTCC1. The GTCC 1 is arranged in the palm plantation 11 and generates electricity by using the gaseous fuel and the liquid fuel produced in the palm plantation 11. Thereby, the fuel required for GTCC1 can be easily obtained. Further, the power supply system 10 has a power transmission network 12 having a first power transmission line 13 for transmitting power from GTCC 1 in each of the plurality of palm plantations 11 and a second power transmission line 14 for connecting the plurality of first power transmission lines 13 to each other. It has. Thereby, for example, even if it becomes difficult or impossible to send power from GTCC1 in some palm plantations to the power consumption area, power can be sent from GTCC1 in other palm plantations to the power consumption area. That is, it is possible to back up the power supply. Therefore, according to the power supply system 10, in addition to mutual interchange and backup of power between palm plantations 11, power can be stably supplied to power consumption areas.

Further, in the power supply system 10, the exhaust heat recovery boiler 4 has a denitration catalyst 42 for removing NOx in the exhaust gas, and

sensors

43 and 44 for measuring the NOx concentration in the exhaust gas. The exhaust heat recovery boiler 4 lowers the temperature of the exhaust gas to the atmospheric temperature by recovering the latent heat of water vapor in the exhaust gas, and recovers the water generated by the recovery of the latent heat of water vapor. According to this configuration, the heat of the exhaust gas can be sufficiently recovered by lowering the temperature of the exhaust gas to the atmospheric temperature. In addition, the water vapor in the exhaust gas can be recovered as a large amount of clean water, and the water can be effectively used.

Further, in the electric power supply system 10, the GTCC 1 in each of the plurality of palm plantations 11 transmits electric power to the transmission and distribution network 61 (the main line 63 and the main line 65) of the electric power company via the transmission network 12. The transmission network 12 is the electric power company. It is configured so that it can be incorporated and transferred to the transmission and distribution network 61 of the above. According to this configuration, as described above, the backup of the power supply and the stable supply of the power are realized, and the power to the power transmission and distribution network 61 of the electric power company Can be converted.

Further, the electric power supply system 10 includes a plurality of GTCC1s that generate electricity using at least one of a gas fuel and a liquid fuel having a zero _{CO 2} emission evaluation produced by fruits from each of the plurality of palm plantations 11 which are oil palm plantations. , A power transmission network 12 that sends each of the electric power generated by the plurality of GTCC 1s to the local power supply network. The power transmission network 12 is configured to be incorporated and transferred to a local power supply network.

_{Power is generated using one or two of gas fuel and liquid fuel, which are stable renewable energies with zero CO 2} emissions from Palm Farm 11, as fuel, and a self-sustaining and locally distributed power generation system is constructed for a long period of time. Wide-area power production, supply, and utilization will be possible. Electricity cannot be stored, and it is necessary to respond flexibly and appropriately according to demand. For this purpose, private electric wires will be provided between the plurality of palm plantations 11 for mutual interchange and backup of electric power. This makes it possible to economically and stably produce, transmit, distribute, and use electric power when and where it is needed, when and where it is needed. This system is a power production / transmission / distribution system that can be used in an integrated manner with the transmission lines of electric power companies. It should be noted that GTCC1 can sufficiently transmit and distribute power in cooperation with an electric power company or the like from the viewpoint of stability of large-scale power supply to power consumption areas.

Palm plantation 11 can produce a large amount of stable renewable energy with zero _{CO 2 emission evaluation.} If liquid fuel is used for GT in addition to the gaseous fuel produced in the palm plantation 11, the highest value-added electric power can be secured. That is, it can be a self-sustaining and locally distributed power plant. In addition, the palm plantation 11 can manufacture and supply the electric power necessary for producing and exporting renewable energy (solid fuel and liquid fuel) with zero _{CO 2} emission evaluation in addition to palm oil, using the vast site. Furthermore, it can be developed as an industrial park in combination with the infrastructure development around the factory. At the same time, the heat of water vapor in the combustion exhaust gas can be recovered, and at the same time, a large amount of clean water can be created and used.

If the palm plantation 11 builds a network as a locally distributed power plant, the necessary power supply can be easily realized in the new palm plantation plan. In addition, since restrictions on clean water supply will be relaxed, it is expected that new palm farms that take SDGs (Sustainable Development Goals) into consideration will spread at an accelerated pace.

The production of palm oil in Indonesia has grown rapidly in recent years due to the improvement of oil palm varieties, the expansion of cultivation area, and the improvement of workability. Palm oil production accounts for more than one-third of the global vegetable oil market. Indonesia's production accounts for more than 50% of palm oil production.

The productivity of palm oil produced by oil palm is nearly 10 times that of soybean oil, which is the second largest food oil in the world, and exceeds 3 tons per hectare per year. In other words, the planted area is 1/10 and the same amount of cooking oil can be produced. Oil palm is a tree, and once planted, it can stably produce fruits (FFB) for more than 20 years. More than 20% of vegetable oil for food can be harvested from FFB, and the remaining 80% is partially used.

As agricultural production technology is expected to improve in the future, it is expected that the production of vegetable oils will increase internationally with alternative plants such as soybeans and coconuts. Internationally, the supply of vegetable oil exceeds the demand. Indonesia has long been an oil importer due to economic growth. For this reason, a policy was introduced in September 2019 to convert palm oil to biodiesel oil, including saving oil imports.

In the future, the most important energy and environmental problem in the world will be the response to climate change caused by global warming. This is a central issue for the realization of SDGs. For this reason, under the humid tropical climate, the fruits (FFB) produced from oil palm palm plantations of evergreen broadleaf forests such as Indonesia, which has vast land and human resources (labor force), are stable throughout the year. It is a resource that can be mass-produced, and is strongly expected to be produced and spread from all over the world as a stable renewable energy and fuel with zero _{CO 2 emission evaluation.} However, since it is an agricultural product, the idea of switching to fuel is still only partial.

In October 2019, the Indonesian government announced a long-term policy and strategy to "make GDP within the fifth place in the world by 2045 with the highest priority on responding to climate change caused by global warming" when the president took office. .. By using FFB as _{a stable renewable energy and fuel with zero CO 2} emissions, we can earn foreign currency and promote economic development, and at the same time, promote the response to climate change due to global warming at home and abroad to contribute to the world.

In order to make fuel from FFB at palm plantations and distribute it to the international market, we will make fuel standards, stably make fuels of quality conforming to this, and in a stable and sustainable state for a long period of time according to the concept of SDGs. It is necessary to transport it for power generation outside the domestic palm plantation and to overseas demand areas. For this reason, the optimum solution is obtained by comprehensively grasping it for development and utilization from the upstream (fuel manufacturing stage) to the downstream (the stage of importing and using fuel). For example, transportation of solid fuel and liquid fuel to ports, which are important as infrastructure _{, use of renewable energy with zero CO 2} emission evaluation for fuel for transportation of ships from ports to overseas, and effective freight transportation of return flights of ships, etc. You should consider and materialize it.

In addition to this, it is a great strength to produce the electric power required to produce fuel in the palm plantation, and to create and disseminate a self-sustaining and locally distributed power generation system. This disclosure is an effort to develop a system that can be used nationwide in the long term and in a wide area and to use the produced electricity and fuel in line with the government policy to realize this.

At palm plantations, oil-mixed wastewater (POME) after extracting crude palm oil (CPO) from FFB using steam is anaerobic biogas in the final ponds of multiple wastewater ponds in the plantation. A device for producing and capturing gas (see FIG. 5) has been established and can be widely used. Biogas contains about 60% CH ₄ and about 40% CO _2. Since CH ₄ has a global warming potential that is _{more than 20 times higher than CO 2} , the Indonesian and Malaysian governments have made an international commitment to prevent global warming by capturing and using it.

The Indonesian government and the Malaysian government, and captivity of the CH _4, has promoted a policy to use as high fuel for power generation of the most value-added. Assuming that the standard yield of palm oil is 3 tons / ha and the area is 200 km ² and 600,000 tons / year by capturing biogas, there are 700 palm plantations in Indonesia. A standard palm plantation can capture biogas, which can generate about 1 MW (1000 kW) of electricity. Capital investment for this purpose requires a considerable amount of money, but the installation is progressing mainly by major companies with overseas Chinese conglomerate capital, and when a system capable of stable power generation is established, the installation will proceed at once. It is expected that this technology system will be applied to the expansion of oil palm plantations in areas such as Africa and Brazil where the temperature and humidity are high.

When used as a fuel for power generation, the adsorption removal by reacting a corrosive H _{2 S} scrubber, supplies the purified biogas for power generation. These pretreatment equipment and engineering efforts have been established at palm plantations for a considerable period of time. Two types of power generation devices, a gas engine and a gas turbine, can be considered.

Even in Japan, cogeneration gas turbines (which use both heat and electricity) used in factories are generally 5 MW class, which is a diversion of the engine of a jet airplane, and 1 MW class is not common. .. Similarly in Europe, gas engines are generally used in the 1 MW class.

The Indonesian government has been working with related organizations to introduce a European gas engine for the development and demonstration dissemination of a power generation device using a 1 MW scale gas engine using biogas. The use in palm plantations has the following two major issues, and is still in the development demonstration stage.

First, biogas contains about 40% CO _2. If _{there is a lot of CO 2,} it is difficult for a gas engine to operate stably. In addition, the properties of the gas may fluctuate, resulting in unstable combustion. Second, gas engines have a great track record in automobiles. In order to operate the gas engine, constant inspection and management is required, so engineering for inspection and adjustment is required in the field environment of palm plantation. If the operation management is outsourced to an external engineering company, the cost will increase and stable operation has not been achieved.

The blades of the gas turbine are rotating bodies, and the basic principle is the same as the water turbines and wind turbines that have been used for power before the Industrial Revolution. Therefore, stable operation can be performed for a long period of time in a state where there is no influence of thermal stress or corrosive substances.

Regular GT is generally 5 MW or more, but 200 kW (0.2 MW) or more 5 MW scale equipment is widely used as an emergency power generation device to operate in the event of an earthquake or fire, and its reliability is high. .. In principle, it can withstand long-term use. Recently, 1MW class GT has been developed and sold in Japan. Even if it is considered from the principle, it can be solved by including the procedure of demonstrating and confirming that it can withstand long-term use.

The emergency generator usually uses liquid fuel. Therefore, not only the gaseous fuel but also the liquid fuel produced in the palm plantation 11 can be used in the palm plantation 11. From now on, the demand for electric power in the palm plantation 11 will be generated mainly for fuel production, but it is important that the scale and the time when it can be used can be flexibly adjusted according to various surrounding situations. In addition, it is important to ensure the stability of supply because electricity cannot be stored. Palm plantation 11 will provide all of these fuels for the necessary electricity, and there is vast land, and it is possible to create employment in combination with the development of surrounding infrastructure, and it is necessary as an industrial park that will be the driving force for regional revitalization and economic development. There is a function that can increase the electric power with the fuel produced in the palm plantation 11. In other words, local governments can formulate regional development plans and promote commercialization in line with the long-term policies and master plans of local governments of the national and republics.

At the palm plantation 11, it is most effective to convert and use the biogas and palm oil crude oil (CPO) produced in the plantation as fuel for the highest value-added electric power. In principle, it is possible to secure the power generation efficiency of GT to about 25%. The temperature of the exhaust gas after power generation is as high as 700 ° C. or higher, and the exhaust heat recovery boiler 4 can recover sufficient heat as much as a dedicated steam boiler. Since the exhaust heat recovery boiler 4 does not have a combustor, stable operation can be realized. Since electric power cannot be stored, it is basic to collect and use the exhaust gas of two or more GTs for stable operation. _{Since CH 4} which is a combustible gas is about 60% in the biogas captured and collected at the palm plantation 11 and the calorific value is small, there is a possibility that the flame blows off at the time of startup and the stability of ignition is low. In this case, the response to stable operation can be solved by igniting with the liquid fuel (CPO: palm oil crude oil) that can be supplied at the palm plantation 11 and switching to the gaseous fuel after the combustor becomes stable.

Based on the gas fuel and liquid fuel produced in the palm plantation 11, the GT generates electricity, and the exhaust heat recovery boiler 4 is a patented system of the evaluation test device and evaluation test system (Patent No. 6446160) registered earlier. Apply the idea. Based on the concept of Zero Waste, a system that makes effective use of the two ultimate power sources and clean water can be realized. In this regard, it has become well-established among stakeholders, including the Indonesian government, to take sustainability (S of Sustainable) and functionally express it as S-GTCC. The exhaust heat recovery boiler 4 incorporates a denitration catalyst 42 to eliminate the emission of air pollutants, and the latent heat of water vapor in the combustion exhaust gas can be exchanged and recovered to the outside air temperature. The collected clean water can be used effectively. The recovered water can be used, for example, in a boiler or the like, and can be produced in a large amount of about twice as much as fuel. Therefore, when GTCC1 is newly introduced to a palm plantation, the system is common, and improvements and improvements such as energy saving, stability of performance, facilitation of operation and inspection management, and securing of economy will be promoted.

At the palm plantation 11, the exhaust gas temperature can be lowered to the outside air temperature by recovering the latent heat of water vapor in the combustion exhaust gas. The heat recoverable amount is 10% in the case of gaseous fuel and 6% in the case of liquid fuel. Therefore, the improvement of the power generation efficiency in the S-GTCC is about 3% for the gas fuel and about 2% for the liquid fuel when the power generation efficiency of the steam turbine is set to about 30% and converted into the efficiency improvement of the power generation efficiency. The water recovered by the exhaust heat recovery boiler 4 is clean water produced by condensation. This can be effectively used as process steam in the palm plantation 11. It is also possible to supply clean water to the outside of the palm plantation 11, which can contribute to the development of local infrastructure. The water recovered by the exhaust heat recovery boiler 4 is clean water produced by condensation. From the chemical formula CH ₄ + 2O ₂ = CO ₂ + 2H ₂ O _{, the volume ratio of the gas between CH 4} and H ₂ O is 1: 2, and the weight ratio is 16: 2 × 18 = 1: 2.25. be. That is, it is possible to produce a large amount of clean water having a weight more than twice the weight of methane gas in the biogas used as fuel. When the S-GTCC can be demonstrated at the palm plantation 11, the Indonesian government has indicated a policy to disseminate it to all 700 palm plantations 11. It can be suppressed to maximize the CO ₂ emissions by stable regeneration energy CO ₂ emissions zero rating as global warming. At the same time, it will be possible to create a comprehensive plan and master plan with a view to creating an industrial park centered on palm plantation 11.

Palm plantation 11 is used in a vast area, and since there are no residents, there is no concern about air pollution. In S-GTCC, there are no pollutants in the exhaust gas. It is not necessary to consider measures such as leakage of a small amount of ammonia and generation of white smoke. The entire amount of heat recovered from the exhaust gas can be exchanged up to room temperature, and no chimney is required. In fact, in an oil mill (MILL), black smoke is emitted from the chimney due to combustion of a boiler or the like. When this system is used for large-scale power generation using LNG as fuel, the achievements at the palm plantation 11 can exert great power. Since there is no air pollution, the residents are welcomed by the local community without any anxiety. Regionally distributed thermal power plant plans can be agreed upon by the community with virtually no environmental impact assessment procedure. This will create great added value not only in Japan but also in the world.

At the palm plantation 11, it is most desirable to convert the biogas and palm oil crude oil (CPO) produced in the plantation into high value-added electric power as fuel. If the generated power is abundant, it can be utilized for the production of effective liquid fuel and solid fuel and other production in the palm plantation 11. At the same time, palm plantation operators have the function and potential as an industrial park by raising a large and abundant labor force through education and training. Further, it becomes possible to supply electric power to the outside of the palm plantation 11, and it is possible to realize an extremely efficient electric power network construction. In order to achieve this, it is possible to create great added value for the development of local power infrastructure through the mutual interchange of power between the following palm plantations and the backup system. By treating the vast palm plantation 11 as a plurality of clusters and connecting them with private electric wires, mutual power interchange and backup power supply can be secured. In addition, since the palm plantation 11 is planned in an area where the population is sparse, the introduction and adoption of S-GTCC facilitates the use of electricity and clean water in the palm plantation 11. At the same time, since the demand for electric power in the surrounding area is small, it is difficult for electric power companies to proceed because it puts pressure on the balance of development of the transmission and distribution network. If the construction of a self-sustaining and locally distributed power plant progresses at Palm Plantation 11, it will lead to the construction of a rational power network. The private transmission line as a cluster can be used for 6 kV, but the transmission and distribution line is the same as the 22 kV specification. Insulators used in utility poles and steel towers generally use 6kV specifications to reduce initial equipment costs. FIG. 3 shows a model in which private electric wires are progressively deployed in the electric power network of an electric power company. At the cluster planning and installation stage, the main line of the electric power company will be installed as if it is not maintained or cannot be used. When the power transmission capacity such as private use in the palm plantation 11 or power transmission to the cluster becomes large, the voltage is set to 22 kV via a transformer. At this time, the private line will be transferred to the electric power company, and the insulator will be replaced with the 22kV specification. Palm plantation 11 is a self-sustaining and locally distributed power plant that uses stable renewable energy with zero _{CO 2 emission evaluation.} By connecting to the main line reasonably and economically when and where it is needed and establishing a local power network, it will become a driving force for regional development. Conventionally, the transmission and distribution network of an electric power company has been planned to have a higher voltage of 66 kV as the main trunk line and 150 kV or more as the main trunk line, but the need for these becomes extremely small.

Both the gaseous fuel produced by capturing the biogas produced from the waste liquid when palm oil is extracted from the fruit (FFB) produced at the palm plantation 11 and the liquid fuel produced from the palm oil raw material (palm oil crude oil: CPO) are both. It is a stable regenerated energy with zero CO _{2 emission evaluation.} By using this fuel to network a self-sustaining and locally distributed power generation system equipped with a sustainable S-GTCC system to multiple palm plantations 11 with private electric wires, it is possible to provide mutual interchange and stable power supply as backup power. Become. In addition, it is possible to flexibly and stably increase and secure private power required for fuel production as a stable renewable energy with zero _{CO 2} emission evaluation from FFB that can be mass-produced in the palm plantation 11 based on the utilization plan. .. Furthermore, by linking private lines with the trunk lines of electric power companies, it will be possible to manufacture and use high value-added electricity and supply it to the region, and it will be possible to develop regional infrastructure, develop regions such as industrial parks, and create industry and employment. In addition, support for the realization of comprehensive policies of the government and local governments, such as capacity building through education and training of people, can be realized economically and systematically. In the future, it is highly possible that the palm plantation company will become an electric power company together with the government and local governments because it will construct, own and operate private electric wires. Further, the waste heat recovery boiler 4 can recover the heat of steam and effectively use a large amount of recovered water. As for gaseous fuel, long-term goals have been established at an early stage as a measure against global warming, such as by effectively using biogas generated from wastewater (POME) generated from the manufacturing process at Palm Farm 11 and refining it. And a technical system that can be realized. If the self-sustaining and locally distributed power supply system 10 is developed and enhanced, it will be easy to supply and secure the power and clean water required for the construction plan of the palm plantation 11 in the vast surrounding area. The palm plantation 11, which is newly planned by utilizing these, will lead to further acceleration of regional development and economic development as a response to global warming countermeasures and SDGs.

FIG. 4 is a schematic view showing a model of the palm plantation 11. As shown in FIG. 4, the palm plantation 11 cultivates plants such as oil palm that grow in tropical rainforest areas that are warm and have a lot of rainfall all year round, for example. The area of the palm plantation 11 is, for example, about 200 km ² . In the palm plantation 11, there is an oil mill (MILL) and a plurality of wastewater ponds 8 adjacent thereto. At the palm plantation 11, oil palm fruits (FFB: Fresh Fruits Bunch: FFB) are harvested daily and transported to an oil mill. Electricity and clean water are needed to operate an oil mill. Steam is injected into the fruit (FFB) to extract the oil. The steam used for extraction is condensed and discharged to the wastewater pond 8 as wastewater (POME) containing organic matter mixed with oil. In the wastewater pond 8, organic matter precipitates or decomposes spontaneously. In the final wastewater pond 8, the oil content of POME is decomposed in an anaerobic state to generate biogas, _{which contains about 60% and about 40% CO 2} , but the composition varies. _{H 2} S, which is a harmful substance in this gas, is adsorbed and removed by a scrubber, purified, and sent to a generator.

Palm plantation 11 is at the stage of capturing biogas and using it as fuel for power generation in accordance with the government policy. The Indonesian government has been working on 1MW scale power generation with a gas engine since around 2010, but the performance as a power generation facility is not stable because the engineering company is still devising and operating it. In addition, due to the high cost of remodeling the biogas captivity device, it is only partially popularized.

It has not been widely used as a GT regular generator using biogas, and has not been used in palm plantations 11. However, GT is a system that rotates blades in the same way as wind turbines and water turbines in order to extract power from before the Industrial Revolution, and its performance is stable in principle. It has the characteristic that it can be operated stably for a long period of time without much human intervention. Also, unlike a gas engine, it is compact and can take out a large output by rotating it at high speed. For this reason, the function of an emergency generator that can be operated by turning on the switch in the event of a fire or earthquake has been highly evaluated, and it has become widespread from 0.2 MW to 5 MW and even larger capacity GTs. In addition, although liquid fuel is basically used as fuel, there is no problem in principle with biomass fuel. The gas turbine has a structure and method in which the amount of combustion air is about four times the theoretical amount of air to lower the combustion temperature and maintain the heat resistance of the turbine blades. For this reason, since electric power cannot be stored, the basic configuration is to install a plurality of units for gas fuel and liquid fuel that can be self-sufficient in the palm plantation 11 in order to secure the output of electric power and to provide a stable supply. Of course, as the demand for electric power in the palm plantation 11 increases, a plurality of each can be installed.

Furthermore, the combination of liquid fuel and gaseous fuel that can be produced from the fruits (FFB) of Palm Farm 11 makes it possible to supply a large amount of power with the highest added value. Therefore, the palm plantation 11 can greatly contribute to the national master plan and the development plan of the local government as a regional industrial park as a regional distributed power plant using stable renewable energy with zero _{CO 2 emission evaluation.} It is hoped that the demonstration of the power generation system will proceed as soon as possible. Once the basic performance is confirmed by the demonstration device, it will be possible to accelerate the practical application by adopting and demonstrating the same type of machine at a plurality of palm plantations 11. It is possible to adopt and install commercially available equipment that can be purchased and procured in the market as a stable standard product even for small scale (0.2 MW, 200 kW) to medium scale (5 MW class). Therefore, the development speed at the demonstration stage is fast, and it is expected that the system will be widely used in a short period of time as a system expanded to practical equipment. As market needs grow, GT is an established technology, and the entry of multiple GT manufacturers can form a market with quality and price advantages. In the future, high-speed and large-capacity communication technology and AI and IoT utilization technologies will rapidly advance, so we will increase the number of monitoring measurements and data storage and utilization by drones utilizing AI and IoT at 700 locations in the future. , It can lead to long-term, comprehensive management and improvement at Palm Farm 11. At the same time, it is important as a fuel for power generation to be able to stably supply liquid fuel and solid fuel with stable quality throughout the year by utilizing and effectively using AI and IoT, which will increase in speed and capacity in the future, and the basic technology that supports this. become.

It is desired that high value-added electric power can be manufactured and used more efficiently and in an ideal form in the palm plantation 11. The exhaust gas temperature at the GT outlet, which is based on the installation of multiple units of gas fuel and liquid fuel, is 700 ° C or higher. Take it out. Remove air pollutants in the exhaust gas to recover all exhaust heat. H _{2 S} in the biogas is removed by the scrubber in the purification unit of the gas. Since NOx is generated at the GT outlet due to combustion, NOx is removed by injecting an _{equivalent amount or more of NH 3 into the NOx.} This denitration reaction is carried out via a reduction catalyst. A heat exchanger exchanges heat between liquid and gas. The exhaust gas is designed to exchange heat up to room temperature. Since there are no air pollutants in the exhaust gas, it is a small-scale system in the palm plantation 11 and does not require a chimney.

Measure and monitor that the reaction in the exhaust heat recovery boiler is being performed properly. The essential items are H ₂ S measured at the GT inlet, NOx concentration and exhaust gas amount at the GT outlet, components in the recovered water, PH, and exhaust gas amount and temperature (measured at the inlet and outlet of each device).

The characteristics and utilization of the generated power will be described. Major components of the palm plantations 11 from such a plurality of waste water pond of precipitating or natural decomposing organic matter in waste water (POME) leaving the office and oil mill and oil mill in 200 km ² things large area as described above Become. Therefore, if the necessary electric power can be secured in the factory or the like, it is easy to create a new liquid fuel or solid fuel manufacturing factory in the palm plantation 11 and expand the related business. In general, GT is characterized by supplying generated power with a plurality of units of gas fuel and liquid fuel, and its output can be flexibly adjusted according to the amount of demand. In addition, the minimum amount of electric power can be self-sufficient even in an emergency such as maintenance or breakdown. Furthermore, by connecting multiple palm farms with private electric wires, it will be easier to provide comprehensive power interchange and backup, and private electric wires will become an important infrastructure for power transmission and distribution in the future.

Coordination of power supply and demand with the outside is also a great merit. The electricity generated at the palm plantation is _{a stable renewable energy with a zero CO 2} emission rating, which is extremely desirable as a measure against global warming. By developing a power supply network by electric power companies in the surrounding area and at the same time promoting infrastructure development such as roads, regional development of the national and local governments can be comprehensively promoted from a long-term perspective. There are about 700 palm plantations nationwide in Indonesia, and the government has indicated that it will expand nationwide when S-GTCC is put into practical use. It is possible to install 700 self-sustaining and locally distributed power plants using stable renewable energy with zero _{CO 2 emission evaluation.} Then, it becomes possible to economically and stably supply the most value-added electric power when and as much as necessary.

The advantages of connecting power to an external network are described. Since the power generated by GTCC generally has a small demand for power in the surrounding area, the basic specification is that it can be transmitted at 6 kV. If there is a 22 kV power grid around the palm plantation 11, it will be transmitted as it is, and the electric power company will connect to the power grid via a transformer. "High-voltage power transmission line" refers to an electric wire used in an electric line having a nominal voltage (JEC standard) of 6 kV. The cost of wires used for power lines with low nominal voltage is lower than the cost of wires used for power lines with high nominal voltage. However, when the nominal voltage (JEC standard) is 22 kV, the specifications of the transmission line are the same as when the nominal voltage is 6 kV. For example, it can be obtained by the formula W = 3 ^{1/2 × EIcos θ.} However, W is electric power (kW), E is voltage (V), and I is current (kA). When the voltage E is 22 kV, for example, assuming that the current I is 1 kA, the power W is about 34 MW. When the electric power demand in the area increases in the future, 22kV has the same specifications as the 6kV transmission line, so when planning and constructing a new transmission network, the electric power company will replace it with an insulator 22kV. It will be. The liquid fuel produced at the palm plantation 11 has the potential to support an electric power supply of as much as 30 MW. In fact the wire is an important infrastructure, the use of 80 mm ² instead 60 mm ^2, there is also a choice that can be further corresponding to the large electric power.

The following merits will occur when the local power network is developed. If a trouble such as a failure occurs in GTCC1 in the palm plantation 11, it will be possible to receive mutual accommodation and backup power consignment from the adjacent palm plantation 11, and the stable supply and reliability of the local power supply will be improved. It will be even bigger. When planning the installation of a new palm plantation 11, it is possible to receive the necessary power supply by extending the 6 kV transmission line. Of course, when the palm plantation starts operating, it will be incorporated into the mutual power network of the palm plantations 11.

The power supply system 10 according to one embodiment of the present disclosure includes a gas fuel supply device 7 that recovers gas fuel from a storage device 80 that stores products produced in the palm plantation 11 and supplies the gas fuel to GTCC 1. There is. According to this configuration, the gas fuel supply device 7 recovers the gas fuel from the storage device 80, and the gas fuel is supplied to the power generation device 2 to generate electricity, which can be used in the palm plantation 11.

Further, the power supply system 10 according to one form of the present disclosure is provided with a device for refining and supplying as fuel for a gas turbine based on palm oil crude oil (CPO) squeezed and produced at the palm plantation 11. According to this configuration, the liquid fuel supply device supplies the liquid fuel to the gas turbine via the oil storage device to generate electricity, and the electric power can be used in the palm plantation 11. In this case, since electric power cannot be stored, it is important for GTCC1 to effectively function the feature that the output of the generated electric power can be adjusted in a form commensurate with the required electric energy.

It is possible to produce a large amount of clean water that weighs more than twice the weight of methane gas in the biogas used as fuel. At the demonstration stage, the recovered water can be supplied in large quantities as boiler water used in oil mills by measuring trace substances such as N and S and controlling the pH to be alkaline of 7 or more. .. There is a report that when producing liquid fuel on a palm farm, the amount of water required is 29% of fruit (FFB) and 24% of palm oil. Therefore, since the maximum water supply capacity from the liquid fuel is as large as 50% or more, it is possible to cover all the water supply capacity required in the palm farm. When planning the installation of a new palm plantation 11, the degree of freedom of location will be expanded by incorporating the use of clean water required in the oil extraction process into the plan. In addition, the initial capital investment for water supply can be suppressed. In the plan of the new palm plantation 11, it will take a long time for the production volume to expand to the standard state. Oil palm produces fruits (FFB) about 3 years after growing seedlings. It is a system that keeps harvesting fruits for the next 20 years, then cuts down and plants new seedlings for sustainable circulation. Therefore, in the initial stage of the palm plantation 11, the required electric power can be effectively reflected in the water utility plan in consideration of the small production amount. It is also possible to supply this clean reclaimed water to an area outside the palm plantation 11. However, consideration must be given to the operation and management of the business, such as application to the Waterworks Law.

Considering global warming countermeasures, in the long run, it is _{absolutely necessary to supply electricity from large-scale thermal power plants with low CO 2} emission intensity, and it is necessary to rely on fossil fuels for a considerable amount. Since the 1980s, it has become clear that petroleum is unsuitable for power generation due to its high price. Coal-fired power _{emits more CO 2} than natural gas, and is regarded as unfavorable from the viewpoint of global warming. For this reason, natural gas, which is widely stored in large quantities all over the world, and LNG, which liquefies and transports this gas, are the most excellent in terms of economy, supply stability, and environmental protection. The technology system that uses this as S-GTCC can be handled with established technology, but it has not been demonstrated yet, and it is not yet widespread all over the world. To prove this, a patent could be registered as an evaluation verification device and an evaluation verification system. By demonstrating this at the palm plantation 11 and disseminating it widely, it can play a role of demonstrating. In order to apply it to large-scale thermal power generation, having a track record of demonstration in an environmental impact assessment system is a great driving force. In principle, it has nothing to do with scale-neutral, that is, the scale of power generation, so it can be realized for the first time as a result of the present invention and contribute to the world.

1 ... GTCC (Gas Turbine Combined Cycle Power Generation System), 4 ... Exhaust Heat Recovery Boiler, 10 ... Power Supply System (Independent and Regionally Distributed Power Supply System), 11 ... Palm Farm (Plantation), 12 ... Transmission Network, 13 ... 1st transmission line, 14 ... 2nd transmission line, 22 ... GT (1st gas turbine), 32 ... GT (2nd gas turbine), 42 ... denitration catalyst, 43,44 sensor, 51 ... steam turbine.

Claims

Multiple gas turbine combined cycle power generation systems that are located in each of multiple plantations and generate electricity using the gaseous and liquid fuels produced in the plantations.
A transmission line having a first transmission line that sends power from the gas turbine combined cycle power generation system in each of the plurality of plantations to a power consumption area, and a transmission network having a second transmission line that connects the plurality of first transmission lines to each other. With
The plantation is a palm plantation where oil palm is cultivated.
Each of the gaseous fuel and the liquid fuel is a fuel produced from fruits harvested in the plantation.
Each of the plurality of gas turbine combined cycle power generation systems
The first gas turbine that operates using the gaseous fuel and
A second gas turbine that operates using the liquid fuel,
An exhaust heat recovery boiler that recovers the heat of the exhaust gas exhausted from the first gas turbine and the second gas turbine, and
It has a steam turbine that operates by utilizing the heat recovered by the exhaust heat recovery boiler.
The gas turbine combined cycle power generation system sends electric power to the plantation where the gas turbine combined cycle power generation system is arranged.
The plurality of gas turbine combined cycle power generation systems are self-sustaining and locally distributed power production and supply systems that transmit power to each of the plurality of plantations via the power grid.
The exhaust heat recovery boiler
A denitration catalyst that removes NOx in the exhaust gas,
It has a sensor for measuring the NOx concentration in the exhaust gas and
The exhaust heat recovery boiler according to claim 1, wherein the exhaust heat recovery boiler lowers the temperature of the exhaust gas to the atmospheric temperature by recovering the latent heat of the water vapor in the exhaust gas, and recovers the water generated by the recovery of the latent heat of the water vapor. A self-sustaining and locally distributed power production and supply system.
The gas turbine combined cycle power generation system in each of the plurality of plantations sends power to the local power grid via the power grid.
The self-sustaining and locally distributed power production and supply system according to claim 1 or 2, wherein the power transmission network is configured to be incorporated and transferred to the power supply network in the region.
Multiple gas turbine combined cycle power generation systems that generate electricity using at least one of the zero CO 2 emission rated gaseous and liquid fuels produced by fruits from each of the palm plantations, which are oil palm plantations.
It is equipped with a power transmission network that sends each of the power generated by the plurality of gas turbine combined cycle power generation systems to the local power supply network.
The power transmission network is a self-sustaining and locally distributed power production and supply system that is configured to be incorporated and transferred to the power supply network in the area.