JP2005147111A - Fuel gas pipeline facility with booster, payout plan support system for estimating payout possibility of exhaust heat recovery compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuel gas pipeline facility with boosting equipment contributing to reduction of carbon dioxide emissions, and a payout plan support system for estimating payout possibility of an exhaust heat recovery compressor. <P>SOLUTION: Heat of a combustion gas of a gas turbine is recovered by an exhaust heat recovery boiler, and compressor is further driven by the recovered energy, so that the fuel gas pipeline facility can reduce fuel of a gas turbine. An instant flow rate monitor or an integrated flow rate monitor for measuring flow rate of the combustion gas reduced by improving heat efficiency are disposed. Instant flow data or integrated flow rate data acquired by the monitors are transmitted to a remote location by a communications means to implement the payout plan support system for calculating increment of consignment amount of the fuel gas pipeline and green house gas emission frame amount. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a fuel gas pipeline facility having a boosting facility and an investment recovery plan support system for estimating the investment recovery possibility of an exhaust heat recovery compressor.

  In order to supplement the pressure drop of the fluid flowing in the natural gas and oil pipelines, a pressure increasing station is provided approximately every 100 km. In this boosting station, a gas turbine is driven using a fluid such as fuel gas or oil to be transported as fuel, and a compressor or pump that boosts the fluid to be transported is driven by the driving force of the gas turbine.

  In order to perform such monitoring of the state of the boosting station, Patent Document 1 discloses, in a private network, a plurality of boosting stations that pressurize transport fluid using a compressor driven by a gas turbine installed on a pipeline. A monitoring system is disclosed in which the most upstream boosting station is connected to a remote monitoring center via the Internet, so that operation management and status management of each boosting station can be performed in the remote monitoring center.

  By the way, the gas turbine for driving the compressor used in such a pressure boosting station has a thermal efficiency of about 35%, but all the combustion gas after driving the gas turbine is released as exhaust heat. Yes. If the heat efficiency can be increased by effectively using the exhaust heat, it is possible to reduce the fuel that drives the gas turbine used in the boosting station.

  In recent years, global warming due to the emission of carbon dioxide and the like has been taken up as an environmental problem, and in developed countries, it is required worldwide to reduce the amount of carbon dioxide emission. On the other hand, in developing countries, carbon dioxide emissions may be unavoidable in the future due to industrial development, and many countries are planning to trade emission allowances for greenhouse gases such as carbon dioxide. Yes. The reduction of fuel in the boosting station described above leads to a reduction in carbon dioxide emission, and the reduced carbon dioxide amount may be traded between multiple countries as an emission allowance.

  However, in the monitoring system described in Patent Document 1 described above, since the purpose is to monitor the state of the boosting station, the exhaust heat utilization of the gas turbine has not been considered. In addition, no system has been found so far that quantitatively calculates the emission allowances that accompany fuel reduction in booster stations.

Japanese Patent Laid-Open No. 2002-189517 (paragraph numbers 0020 to 0025, FIG. 1)

  The present invention has been made under these circumstances, and is an investment recovery for estimating the investment recovery possibility of a fuel gas pipeline facility having a boosting facility that contributes to the reduction of carbon dioxide emissions and an exhaust heat recovery compressor. The objective is to provide a planning support system.

  Also, in areas where such fuel pipelines are laid, there are often no water sources in the surrounding area, and it is difficult to secure water used in the pressure boosting station. Therefore, another problem to be solved by the present invention is to provide a fuel gas pipeline facility that enables self-sufficiency of water used in a boosting station.

  In order to solve the above-described problems, the present invention recovers the heat of the combustion gas of a gas turbine that has been conventionally discarded by an exhaust heat recovery boiler, and drives the compressor with the recovered energy, thereby enabling the capacity of the compressor. Was raised. By doing so, the fuel to be diverted from the fuel gas pipeline to the compressor is reduced, and the fuel gas, which is the original purpose of the fuel gas pipeline, can be supplied efficiently. In addition, by attaching such an exhaust heat recovery boiler and a compressor driven by the recovered energy (exhaust heat recovery compressor) to the existing compressor, the capacity of the compressor can be increased while keeping existing equipment. Can do.

  The compressor referred to in the present invention is typically a boosting station that boosts the gas pressure in the middle of the fuel gas pipeline. For example, the compressor is applied to a compressor in a liquefaction plant in which natural gas is liquefied before being transported by a tanker. You can also.

  Moreover, in order to solve another subject mentioned above, this invention collect | recovers the water vapor | steam contained in the combustion gas which was discarded from the gas turbine using the water collection | recovery apparatus, and the heat | fever was absorbed with the waste heat recovery boiler, Self-sufficiency of water was made possible.

  In addition, by renting a waste heat recovery compressor and recovering part of the profits gained by improving the capacity of existing compressors as a rental fee, high-efficiency compressors are disseminated and greenhouse gas emissions are all reduced. It becomes possible to suppress worldwide. For this reason, the exhaust heat recovery compressor is provided with an instantaneous flow rate monitor and an integrated flow rate monitor for measuring the flow rate of the fuel gas, and the instantaneous flow rate data or the integrated flow rate data measured by these monitors is transmitted to a remote place by communication means. By doing so, it becomes possible to manage the flow rate of the fuel gas and improve the efficiency of the business.

  Furthermore, since the above-mentioned business requires the prospect of investment recovery, in the present invention, it is possible to recover the investment by calculating the income obtained from the improvement of the fuel consumption rate of the compressor by installing the exhaust heat recovery compressor. Providing an investment recovery plan support system that estimates performance.

According to the present invention, the efficiency of a gas compressor can be improved in a fuel gas pipeline such as a natural gas pipeline. Therefore, the amount of carbon dioxide, which is a warming effect gas, can be reduced, and the environment can be protected. Further, the amount of decrease in emissions of carbon dioxide, or by having improved efficiency of the gas compressor, certified CO ₂ emission allowances, by cash the CO ₂ emission allowances can benefit. Alternatively, it is possible to obtain a profit by cashing the increment of the consignment amount.

  Furthermore, since it is possible to recover the water vapor contained in the exhaust gas, it is easy to install the boosting station even in an area where it is difficult to secure a water source.

Next, embodiments of the present invention will be described with reference to the drawings as appropriate.
(Natural gas pipeline)
As shown in FIG. 1, a natural gas pipeline, which is an example of a fuel gas pipeline, is supplied from a natural gas supply source P, which is a natural gas production region, by a pipeline PL, and a natural gas consumer A, Delivered to B. Or, if the natural gas customer is in a remote area beyond the sea, the natural gas is cooled and compressed in the liquefaction plant C to reduce the volume, and then a dedicated LNG (Liquefied Natural Gas) It is transported on a tanker.

In the middle of the pipeline PL, boosting stations BS1 to BSn for increasing the pressure are provided as appropriate in order to improve the flow of natural gas at a predetermined interval, for example, every 100 km.
In this embodiment, a natural gas pipeline is illustrated as a typical example of the fuel gas pipeline, but the present invention can be applied to a petroleum pipeline having the same configuration. .

(Pressure boosting station)
As shown in FIG. 2, the boosting stations BS1 to BSn (hereinafter referred to as “BS”) mainly include an intake filter 1, an air compressor 2, a combustor 3, a gas turbine 4, a first compressor 5, and exhaust heat recovery. The compressor 10 is provided.

  The intake filter 1 is connected to the air introduction side of the air compressor 2 by a pipe 1a. The air compressor 2 is a compressor that compresses air by the rotation of a turbine, and its discharge side is connected to the combustor 3 by a pipe 2a.

  The combustor 3 is connected to a diversion pipe 3a for introducing fuel gas diverted from the pipeline PL. Then, the compressed gas sent from the air compressor 2 is used to burn the fuel gas introduced from the branch pipe 3a. The discharge side of the combustor 3 is connected to the inflow side of the gas turbine 4 by a pipe 3b.

  A flow meter 6 for measuring the flow rate of the fuel gas entering the combustor 3 is provided in the branch pipe 3a. As the flow meter 6, for example, an instantaneous flow rate monitor that measures an instantaneous flow rate can be applied. The instantaneous flow rate data detected by the flow meter 6 is always sent to the management terminal 7 and transmitted from the management terminal 7 to the remote management system via the communication line CL. Here, the management terminal 7 corresponds to the communication means in the claims. As the flow meter 6, an integrated flow monitor that measures the integrated flow rate can be used instead of the instantaneous flow rate monitor. In this case, the integrated flow rate data may be transmitted to the management terminal 7 regularly or irregularly. Further, when the combustor 3 is composed of a plurality of combustors, a flow meter may be provided in the previous stage of each combustor, and the sum of the flow rates measured by them may be taken. It is also possible to provide one flow rate monitor in the part before diverting to the vessel.

The branch pipe 3a is provided with a component analyzer 8 for analyzing the components of the fuel gas. This is used to calculate the carbon ratio in the fuel gas in order to calculate the CO ₂ emission allowance from the fuel gas reduction. The component analyzer 8 performs component analysis regularly or irregularly, and the analysis result is output to the management terminal 7. As the component analyzer 8, gas chromatography or the like can be used.

Further, the component analyzer 8 may be provided downstream of the gas turbine 4 so as to directly measure the CO ₂ concentration using the exhaust gas burned in the gas turbine 4 as a sample. In this case, instead of measuring the flow rate of the fuel gas, the amount of exhaust gas after combustion is measured.

  The gas turbine 4 is coupled to the air compressor 2 by a shaft 4a, and drives the air compressor 2 by the rotational torque of the gas turbine 4 by combustion gas. The gas turbine 4 is also connected to the rotor of the first compressor 5 by a shaft 4 b, and the first compressor 5 is driven by the rotational torque of the gas turbine 4. Note that the gas turbine 4 may be either a single-stage type or a multi-stage type.

  The gas compressor 9 which is a portion including the intake filter 1, the air compressor 2, the combustor 3, the gas turbine 4, and the first compressor 5 described above is a conventional boosting station. The gas compressor 9 may be an existing one or may be newly constructed.

  Here, the exhaust gas discharged from the gas turbine 4 still has heat of about 500 to 600 ° C., and the exhaust heat recovery compressor 10 is driven using this heat.

(Exhaust heat recovery compressor)
The exhaust heat recovery compressor 10 includes an exhaust heat recovery boiler 11, a steam turbine 12, a generator 13, a motor 14, a second compressor 15, and a water recovery device 16.

  The exhaust heat recovery boiler 11 generates water by heating water by exhaust heat introduced from the gas turbine 4. This steam is sent to the steam turbine 12 through the pipe 11a, and the steam exiting the steam turbine 12 is condensed by entering the condenser 11b and being cooled by outside air, circulating cooling water or the like, and again exhausted heat. It is supplied to the recovery boiler 11 and circulates between the exhaust heat recovery boiler 11 and the steam turbine 12.

  The generator 13 is coupled to the steam turbine 12 by a shaft 13a. The output of the generator 13 is connected to the motor 14, and the output shaft of the motor 14 is coupled to the shaft 15 a of the second compressor 15.

  The second compressor 15 is connected to the subsequent stage of the first compressor 5 described above. That is, the fuel gas in the pipeline PL compressed by the first compressor 5 is further compressed and sent out.

  The water recovery device 16 recovers water from the exhaust gas that has been absorbed by the exhaust heat recovery boiler 11 and discharged. The exhaust gas from the gas turbine 4 contains water vapor generated by the combustion reaction of the fuel gas. The water recovery device 16 cools and condenses this water vapor and recovers it.

A part of the water condensed from the water vapor to the liquid in the condenser 11b is sprayed from the upper part of the water recovery device 16 by the water supply pump 16a. This water directly contacts the exhaust gas from the gas turbine that has passed through the exhaust heat recovery boiler 11, and cools the exhaust gas. Thereby, water vapor in the exhaust gas is condensed and water is recovered. The recovered water is supplied to the water supply port of the exhaust heat recovery boiler 11 through the pipe 16b. The exhaust gas after water recovery is released to the outside air.
The recovered water can be used not only as supplementary water to the exhaust heat recovery boiler, but also for the purpose of cooling the supply air to the gas turbine and improving the power efficiency.

According to the exhaust heat recovery compressor 10 as described above, the steam turbine 12 is rotated by exhaust heat from the gas turbine 4 that has been conventionally discarded, and the second compressor 15 is driven using the output torque of the steam turbine 12. Then, the fuel gas in the pipeline PL is further boosted by the second compressor 15. Therefore, the boosting efficiency is improved in the entire boosting station BS.
Therefore, if the operation method with a constant fuel gas boosting capability (with a constant fuel gas delivery amount) is adopted when comparing the state with and without the exhaust heat recovery compressor 10, the shunt pipe The amount of combustion gas supplied to the combustor 3 through 3a can be reduced. Therefore, the amount of carbon dioxide, which is a greenhouse gas, can be reduced. Further, the fuel cost required at the boosting station BS can be reduced.

  Further, if the amount of fuel gas supplied to the boosting station BS from the shunt pipe 3a is constant between the state where the exhaust heat recovery compressor 10 is attached and the state where it is not attached, the boosting capacity of the boosting station BS is increased in the attached state. By increasing the amount, if there is a margin in the pressure resistance of the PL, the amount of consignment can be increased.

  Moreover, it is possible to collect the water in the exhaust gas by the water collecting device 16, and this makes it easy to install the pressure increasing station even in an area where it is difficult to secure a water source.

(Other forms of boosting station)
The boosting station BS described above can be modified as follows.
In the configuration of FIG. 2, the generator 13 is rotated by the output torque of the steam turbine 12 of the exhaust heat recovery compressor 10, the motor 14 is driven by the output of the generator 13, and the output shaft of the motor 14 and the second compressor 15 are driven. Although the shaft 15a is coupled, the shaft 15a of the second compressor 15 may be directly coupled to the output shaft of the steam turbine 12 as shown in FIG. With this configuration, there is no energy loss in the generator 13 and the motor 14 shown in FIG. 2, so that a higher efficiency boosting station or exhaust heat recovery compressor can be obtained.

  Moreover, as shown in FIG. 4, the gas turbine 4, the steam turbine 12, and the 1st compressor 5 can also be arrange | positioned coaxially, and it can also comprise so that each axis | shaft may be connected mechanically. Also in this example, the first compressor 5 can be driven without losing the output of the steam turbine 12 by the generator 13 and the motor 14 as compared with the case of FIG. it can. Compared to the case of FIG. 3, the gas turbine 4 and the steam turbine 12 drive one coaxial first compressor 5, so that the mechanical loss of the compressor is small and combustion is performed with higher efficiency. Gas can be boosted. In addition, since the number of parts constituting the boosting station can be reduced, the equipment cost can be reduced. Although the first compressor 5 is illustrated as one, a plurality of compressors may be arranged on the same axis and compressed by a plurality of stages of compressors.

  Moreover, as shown in FIG. 5, it can also comprise so that the generator 13 may be connected with the system | strain linkage device 17 which connects an external power supply or an external load with respect to the pressure | voltage rise station BS of FIG. According to such a structure, when the capability requested | required of a pressure | voltage rise station changes with time, it can respond flexibly. For example, when a high capacity is required for the boosting station, power is supplied from an external power supply via the system linkage unit 17 and the frequency of the power supply is increased by the inverter 17a, thereby increasing the capacity of the motor 14 to the required capacity. Correspondingly, conversely, when the capacity is not so required, the electric power generated by the generator 13 can be supplied to the external load via the system linkage unit 17. As the external load, for example, an in-house power source such as an office that manages the boosting station can be considered. Moreover, you may sell electric power to a power generation company. Thereby, it is also possible to operate as a cogeneration system that generates power from the gas turbine 4 and power from the generator 13 by adding the exhaust heat recovery compressor 10 according to the present invention to the existing boosting station. is there.

  Further, according to this configuration, even when the gas turbine 4 is stopped, it is possible to use the motor 14 to drive the second compressor 15 by, for example, purchasing power from a power generation company. That is, even when a trouble such as a partial failure of the gas turbine 4 occurs, the motor 14 can be operated.

  Further, when providing the system linkage unit 17, it is desirable to provide a power monitor 18 for measuring the power flowing out to the external load via the system linkage unit 17. As the power monitor 18, for example, an instantaneous power monitor that measures instantaneous power can be applied. The instantaneous power data detected by the power monitor 18 is always sent to the management terminal 7 and transmitted from the management terminal 7 to the remote management system via the communication line CL. Here, the management terminal 7 corresponds to the communication means in the claims. Note that, as the power monitor 18, an integrated power monitor that measures integrated power can be used instead of the instantaneous power monitor. In this case, the integrated power data may be transmitted to the management terminal 7 regularly or irregularly.

In addition, as shown in FIG. 6, an inflow valve 20 provided on the pipeline PL on the inflow side of the fuel gas to the pressurization station, and an outflow side of the connection between the boost station BS and the pipeline PL An outflow valve 21 provided on the pipeline PL and a bypass valve 19 provided on a bypass connecting the inflow pipeline PL and the outflow pipeline PL can be arranged. The open / close state of these valves is that the inflow valve 20 and the outflow valve 21 are “open” and the bypass valve 19 is “closed” when the pressurizing station BS is in operation, and the inflow valve 20 and the outflow valve are inactive when the pressurization station BS is stopped. 21 is “closed”, and the bypass valve 19 is “open”. By operating these valves, a specific boosting station BS can be stopped by maintenance or the like while the pipeline PL is in operation.
When the present invention is applied to the pipeline PL in which the transport target fluid is oil, a booster pump is used for each of the first compressor 5 and the second compressor 15.

(Business scheme)
Next, an example in which the gas compressor or the exhaust heat recovery compressor (hereinafter referred to as “gas compressor or the like” as appropriate) in the fuel gas pipeline facility of the present invention is applied to an actual business will be described.

  In the case of the business scheme shown in FIG. 7, the gas compressor or the exhaust heat recovery compressor is lent to a consignor (pipeline company) 91 from the compressor business division 96. At the time of lending, a contract is made for a distribution method of profits obtained by using a gas compressor or the like. Note that the loan may be assigned under contract.

  Natural gas is produced by a natural gas producer 90 and sent to a liquefier 92 by a consignor 91. In addition, if it is the area directly connected by the pipeline, natural gas can be supplied to the gas consumer 94, without liquefying. The liquefier 92 liquefies natural gas and delivers LNG to the transporter 93, which supplies the LNG to the gas consumer 94. The gas consumer 94 pays the purchase price to the finance department 97 according to the amount of natural gas used. In the description of the embodiment, since the compressor business division 96, the finance division 97, and the in-house power generation division 95 are included in the same company group, they are referred to as “departments”.

On the other hand, the consignor 91 transfers the consignment allowance and the greenhouse gas (CO ₂ ) emission allowance to the compressor business unit 96 in accordance with the contract described above.

The finance division 97 plays a role as an investor of gas compressors and the like installed in the consignor 91, and uses the compressor fee business unit 96 for the compressor business on behalf of the consignor 91. Pay to Department 96. On the other hand, the compressor business section 96 transfers the consignment allowance and the CO ₂ emission allowance received from the consignor 91 to the finance department 97.

The finance division 97 obtains a profit by converting the received CO ₂ emission allowance in the CO ₂ emission company or the CO ₂ emission allowance market. In addition, the consignment frame is sold to the gas consumer 94 or the like, or is converted into cash by selling private power generated by low-cost LNG.
The private power generation section 95 is supplied with LNG from the transporter 93, supplies the generated power to the power consumer 98 and receives a charge from the power consumer 98. LNG fuel costs are paid to the finance department 97.

  The finance department 97 pays the natural gas producer 90 a fuel price corresponding to the LNG used by the private power generation department 95 and the LNG used by the gas consumer 94. In addition, the finance department 97 pays the transporter 93 for the LNG transportation fee.

  According to the business scheme as described above, the consignor 91 can increase the consignment capacity without the need for funds, and can obtain a profit by distributing a part of the profit for this capacity increase. it can. Moreover, since the contractor 91 introduces a compressor without incurring a risk, the compressor business division 96 can promote the introduction of the compressor and obtain a profit. Furthermore, the easy introduction of the compressor provides the finance department 97 with a new investment destination.

Further, since the gas compressor or the like in the fuel gas pipeline facility of the present invention can be used by the liquefier 92, as shown in FIG. 8, the gas compressor or the exhaust heat recovery compressor is transferred from the compressor business division 96 to the liquefier 92. You can also lend to. In this case, the CO ₂ emission frame and the liquefaction frame are transferred from the liquefier to the compressor business division 96 according to the decreased fuel amount and the increased liquefaction frame by the lent gas compressor or the like. The finance department 97 receives a CO ₂ emission allowance and a liquefaction allowance from the compressor business department 96 in exchange for paying a usage fee to the compressor business department 96. Furthermore, the finance division 97 sells the CO ₂ emission allowance to the CO ₂ emission company or sells it in the CO ₂ emission allowance market, sells the liquefaction allowance to the gas consumer 94, etc., or owns by low-cost LNG Cash is generated by selling generated power.

Moreover, as shown in FIG. 9, the finance department 97 may own a gas compressor or the like. In this case, the finance department 97 places an order for a gas compressor or the like and pays a price to the compressor business department 96, and the compressor business department 96 constructs the equipment at the consignor 91 or the liquefier 92. Contracts are exchanged between the consignor 91 and the finance department 97, and between the liquefier 92 and the finance department 97, and according to this contract, the consignor 91 uses the consignment allowance or CO ₂ emission allowance as the equipment usage fee. 97, the liquefier 92 transfers the liquefaction frame and the CO ₂ emission frame to the finance division 97. Then, the finance department 97 cashes the consignment frame, the liquefaction frame, or the CO ₂ emission frame in the same manner as in the case of FIGS. According to such a business scheme, the compressor business section 96 ends selling gas compressors and the like, so there is no risk due to fluctuations in gas demand.

(Examples of transactions using waste heat recovery compressors)
In accordance with the business scheme described above, when conducting business using a gas compressor or the like in the fuel gas pipeline facility of the present invention, there are three possible ways of thinking of profits obtained by introducing a gas compressor or the like. In the following, a description will be given by taking, as an example, a mode in which the exhaust heat recovery compressor is introduced into the existing gas compressor among the gas compressor or the exhaust heat recovery compressor in the fuel gas pipeline facility of the present invention. The same can be considered when a gas compressor is newly introduced in the fuel gas pipeline facility.

The first is a case where the amount of consignment is not changed before and after the introduction of the exhaust heat recovery compressor. The profit at this time is generated by reducing the amount of natural gas consumed in the boosting station, reducing the fuel cost, and surplus CO ₂ emission allowance (transaction example 1).

  The second case is a case where the amount of fuel gas consumed in the boosting station is not changed before and after the introduction of the exhaust heat recovery compressor. The profit at this time is increased by increasing the capacity of the boosting station, and profits are generated by exchanging this amount of natural gas (transaction example 2).

Third, in the same way as in Transaction Example 2, the amount of fuel gas consumed at the boosting station is not changed before and after the introduction of the exhaust heat recovery compressor. , CO ₂ emissions increased, but CO ₂ emission allowances recognized for efforts to improve efficiency are converted into profits (transaction example 3)
Hereinafter, from the business plan to the operation of the equipment and the CO ₂ transaction will be sequentially described for these transaction examples 1 to 3.

(Transaction example 1)
As shown in FIG. 10, in the business to apply the exhaust heat recovery compressor in the fuel gas pipeline facility of the present invention, mainly the consignor (user) 91 as shown in FIG. 7 and the compressor business department (equipment supplier). ) The project is planned and put into operation between 96 and the finance department (stakeholder) 97.

First, the consignor 91 passes information on the existing boosting station (gas compressor, existing equipment) to the compressor business division 96 (S101). The information regarding the boosting station includes, for example, the current equipment configuration / capability, the operation status so far, and the future operation prospect.
Then, the compressor business unit 96 formulates a repair plan for the existing equipment based on the received existing equipment information (S102).

  Next, the compressor business division 96 reports the renovation plan thus formulated to the finance division 97 (S103). The report of the renovation plan at this time includes information on the fuel gas reduction rate (fuel reduction rate) due to the renovation (introduction of the exhaust heat recovery compressor), the initial cost including equipment cost and installation cost, and the operation and maintenance cost of the facility. included.

Next, the finance department 97 makes an investment recovery plan based on the reported repair plan (S104). The investment recovery plan is performed using an investment recovery plan support system described later. In order to recover the investment, it is necessary for the finance department 97 to receive a part of the profits obtained by the renovation of the existing facilities. The finance department 97 calculates how much the set consideration is to be paid. The finance division 97, when the set consideration is determined, includes information such as the CO ₂ emission allowance received per consignment amount, the reduced fuel cost per consignment amount, the guaranteed operating rate, and the collection period as the set consideration. Report to the department 96 (S105). When setting the guaranteed operating rate, it is set based on the previous operating status and the operation plan survey.

Next, the compressor business section 96 reports to the contractor 91 about the repair plan and the set price reported from the finance section 97 (S106).
The consignor 91 examines refurbishment (introduction of a waste heat recovery compressor) based on the received refurbishment plan and set value information (S107). As a result of the examination, if the consignor 91 decides to introduce the exhaust heat recovery compressor, an introductory contract is concluded between the consignor 91 and the compressor business unit 96 (S108), and the compressor business unit 96 and the finance unit 97 A purchase contract is concluded between them (S109).

Next, the finance department 97 pays the purchase price to the compressor business department 96 (S110), and the compressor business department 96 introduces the exhaust heat recovery compressor to the existing booster station (gas compressor) of the consignment company 91 (renovation). (S111).
When the introduction is completed, the consignor 91 operates the boosting station after the repair. The compressor business unit 96 performs an operation / maintenance service of the equipment according to the option contract with the consignor 91 (S113).

Further, the consignor 91 measures the consignment amount and the used fuel gas flow rate during operation, and receives CO ₂ emission allowance authentication according to the decrease amount of the used fuel gas (S114).
Then, the consignor 91 pays the consideration to the finance department 97 at regular intervals according to the introduction contract (S115). Compensation may be paid with a CO ₂ emission allowance, or may be paid with money distributed by a distribution ratio determined by a contract among the saved fuel costs, or may be both.
When the finance division 97 receives the CO ₂ emission allowance, the finance department 97 sells the CO ₂ emission allowance in the emission allowance market EM and cashes it (S116).

  In the above transaction example 1, when the finance department 97 makes an investment recovery plan, the following investment recovery plan support system may be used.

(Investment recovery plan support system)
As shown in FIG. 11, the investment recovery plan support system 30 causes a general computer to execute a program, and includes a central processing unit (CPU) 30 a that performs calculation, temporary storage, comparison, and the like, programs, and various databases. It has a storage device 30b for storing, a keyboard 30c as an input device, and a display 30d as an output device.

The investment recovery plan support system 30 is functionally configured as shown in FIG. That is, it includes various input units 31 for inputting values for calculating investment recovery, an income calculation unit 32 for calculating income based on the input values, a recoverability determination unit 33, and an output unit 34. Yes. These units 31 to 34 are realized by the CPU 30a appropriately reading and processing the program in the storage device 30b. The investment recovery plan support system 30 includes a database 35 in the storage device 30b.
The input unit 31 includes an initial cost input unit 31a, a fuel reduction rate input unit 31b, a consignment amount input unit 31c, a distribution rate input unit 31d, a collection period input unit 31e, a consignment amount increment input unit 31f, and a unit consignment postage input unit 31g. Have
The initial cost input unit 31a is a part for inputting an initial cost including equipment cost and installation cost necessary for introducing the exhaust heat recovery compressor.
The fuel reduction rate input unit 31b is a portion for inputting a fuel reduction rate that is a fuel reduction amount per unit consignment amount due to the introduction of the exhaust heat recovery compressor. When inputting the fuel reduction rate or making the investment recovery plan support system 30 calculate,

Fuel reduction rate = (Fuel consumption rate before renovation-Fuel consumption rate after renovation)
/ Fuel consumption rate before renovation x 100 [%]

  It can ask for.

The consignment amount input unit 31c is a part for inputting a period consignment amount that is a consignment amount per unit period.
The distribution rate input unit 31d is a portion for inputting a distribution rate distributed according to a contract concluded in advance among profits obtained by fuel reduction.
The collection period input unit 31e is a part for inputting an investment collection period.
The consignment amount increment input unit 31f is a part for inputting an increment of the consignment amount obtained by introducing the exhaust heat recovery compressor.
The unit consignment postage input unit 31g is a part for inputting a unit consignment postage that is a consignment fee per unit consignment amount.

The database 35 includes a gas market database 35a, an emission allowance market database 35b, and a user credit database 35c.
The gas market database 35a stores at least a market price of natural gas (fuel gas), for example, a market price in time series.
The emission allowance market database 35b stores at least the market price of the CO ₂ emission allowance (greenhouse gas emission allowance), for example, stores the market price in time series.
The user credit database 35c stores data in which the user's payment ability is quantified.

  The income calculation unit 32 is a part that calculates income obtained from each input value in accordance with the set calculation mode. Specifically, when trying to make a profit by reducing fuel, the product of the amount of consignment, the fuel reduction rate, and the distribution rate, that is,

  Revenue = Consignment x Fuel reduction rate x Distribution rate

Is integrated for the collection period to calculate the income.
Then, when the CO ₂ emission allowance is surplus and is going to be converted into cash, the income calculation unit 32 extracts the market price of the emission allowance from the emission allowance market database 35b, Multiplying the transferable CO ₂ allowance and the distribution rate, ie

Revenue = CO ₂ emission allowance × emission allowance market price × distribution rate

Is integrated for the collection period to calculate the income.
In addition, when trying to make a profit by both reducing the fuel and transferring the emission allowance, the sum of these may be obtained.

  In addition, as in the case of Transaction 2, the amount of fuel gas consumed at the boosting station is not changed, and the amount of consignment is increased by improving the capacity of the boosting station. Is obtained by multiplying the increment of the consignment amount by the market price and distribution rate of the gas extracted from the gas market database 35a, that is,

Revenue = Increase in consignment volume x Gas market price x Distribution rate

Is integrated for the collection period to calculate the income.
In the above calculation, in order to safely carry out the business in consideration of various risks, the emission market price fluctuation risk coefficient obtained from the emission allowance market database 35b and the gas market price obtained from the gas market database 35a. The fluctuation risk coefficient and the user risk coefficient obtained from the user credit database 35c may be appropriately multiplied.

The recoverability determination unit 33 compares the income obtained during the calculated recovery period with the input initial cost, and outputs data indicating that it is difficult to recover if the initial cost is larger. If the cost is smaller, output data indicating that it can be collected. Note that the recovery possibility can be determined by various methods, so other methods may be used. For example, the yield may be calculated and output from the initial cost and the income of each year.
The output unit 34 has a function of outputting data as a determination result output by the recoverability determination unit 33 to the display 30d.

  According to such an investment recovery plan support system, when each input value such as an initial cost is inputted, the income is calculated by the income calculation unit 32, and the recoverability is determined by comparing the income with the initial cost. Is done. Therefore, it is possible to easily determine whether the investment can be recovered by introducing the exhaust heat recovery compressor.

Moreover, in the transaction example 1, the CO ₂ emission allowance transaction is performed as follows.
(CO ₂ emission allowance trading system)
In the CO ₂ emission allowance transaction system transaction, as shown in FIG. 13, in addition to the consignor 91 and the finance department 97, the emission allowance certification body 41, the emission allowance register management organization 42, the transaction log management organization 43, the emission allowance An acquisition candidate 44 is involved. These consignor 91, finance department 97, emission allowance certification organization 41, emission allowance registration management organization 42, transaction log management organization 43, and emission allowance acquisition applicant 44 communicate with communication means 91a, 97a, 41a, 42a, respectively. , 43a, 44a, and communication means 91a, 97a, 41a, 42a, 43a, 44a are connected to the network 40. As the network 40, for example, the Internet or a network constructed by a dedicated line in consideration of security can be used.
The consignor 91 has a terminal device 91b that can communicate with the communication means 91a. The communication unit 91a and the terminal device 91b correspond to the management terminal 7 in FIGS. 2 to 5 described above.

  The finance department 97 receives the fuel gas usage amount at the boosting station transmitted from the consignor 91, and obtains the emission allowance desired to be acquired based on the fuel gas use amount data (hereinafter referred to as “acquired emission allowance”). A server 97b that includes an emission allowance calculation function for calculating ()) and an accumulation function for accumulating fuel gas usage data. The server 97b is connected to the network 40 via the communication means 97a.

  Emission allowance certification body 41 is a third-party organization that is different from the entity that conducts transactions such as finance department 97 that verifies and determines the amount of allowance when there is a surplus of allowance at consignor 91 etc. It is. The emission allowance certification body 41 receives the fuel gas usage data and the fuel gas component data from the consignor 91, verifies the data, and determines the emission allowance authentication function for determining the emission allowance and the determined emission allowance. It has a server 41b including a database function capable of searching information permitted to be browsed and a communication function for communicating with other computers via the network 40. The server 41b is connected to the network 40 via the communication means 41a.

  The emission allowance registry management organization 42 is an organization that registers and manages emission allowances as an account, and is operated by a third party different from the transaction entity. The emission allowance registry management organization 42 has a storage function for accumulating emission allowances as emission allowance information files in a folder called an account assigned to each business operator (transaction entity), and an operator who is the owner of the account. When receiving the information to apply for the transfer of emission credits, it makes an inquiry to the transaction log management organization 43, and when receiving the information to authenticate the transaction from the transaction log management organization 43, the emission allowance sent by the business owner who is the account owner The allowance transfer function that transfers (writes) the allowance information file to a desired account in accordance with the information to apply for transfer, and deletes the original allowance information file, and communication that communicates with other computers via the network 40 The server 42b including the function is included. The server 42b is connected to the network 40 via the communication means 42a.

The transaction log management organization 43 is an organization that monitors the emission allowance transaction log (progress) and is operated by a third party different from the transaction entity. The transaction log management institution 43 monitors whether or not the allowance transaction is normally performed, an authentication function that gives an allowance for the allowance transaction, a storage function that accumulates an allowance log, and information on the allowance transaction. Of these, a server 43b including a database function capable of searching for items permitted to be browsed and a communication function for communicating with other computers via the network 40 is provided. The server 43b is connected to the network 40 via the communication unit 43a.
The emission allowance acquisition applicant 44 has a terminal device 44b, and the terminal device 44b is connected to the network 40 via the communication means 44a.

(Operation of CO ₂ emission allowance trading system)
Next, the operation of the CO ₂ emission allowance transaction system in the present embodiment will be described with reference to FIG. 14 showing the process until the finance department 97 acquires the emission allowance.

First, the consignor 91 and the finance department 97 have a contract for a method of distributing the CO ₂ emission allowance (hereinafter simply referred to as “emission allowance” in the description of the operation) obtained by installing the exhaust heat recovery compressor. (S120). In the present embodiment, it is assumed that the consignor 91 and the finance department 97 are businesses that have emission allowances set (for example, businesses in Annex 1 countries of the Kyoto Protocol). The emission allowance is an emission allowance possessed by the consignor 91 that becomes surplus due to the reduction in fuel gas consumption. Further, in the contract between the consignor 91 and the finance department 97 of this embodiment, all the acquired emission allowances generated by the operation of the exhaust heat recovery compressor are converted to the emission allowances in the account of the consignor 91, and are generated as an example. 60% of the acquired emission allowance is acquired by the finance division 97, and 40% is acquired by the consignor 91. Therefore, it is only necessary to transfer the emission allowance held by the consignor 91 corresponding to 60% of the emission allowance amount acquired by this business to the account of the finance department 97.

  Next, the consignor 91 and the finance department 97 register the contents of the contract with the emission allowance certification body 41, which is a third party (S121). The emission allowance certification body 41 verifies the business contents and the contract contents, and approves the contract if there is no problem.

Next, according to the contract, the consignor 91 operates the exhaust heat recovery compressor (S122). At this time, the flow rate of the fuel gas (the amount of fuel gas used) is appropriately measured by the flow meter 6, and the component of the fuel gas is measured by the component analyzer 8. Note that the fuel gas consumption and fuel gas component data are referred to as “monitoring data”.
The terminal device 91b of the consignor 91 transmits the monitoring data to the server 97b of the finance department 97 regularly or irregularly (S123).

  Next, the terminal device 91b of the consignor 91 calculates the emission allowance to be acquired based on the monitoring data (S124). More specifically, this is performed as follows. First, when the flow meter 6 is an instantaneous flow rate, an integrated flow rate (fuel gas usage amount) within a calculation period is calculated. When the flow meter 6 is an integrated flow meter, the data measured by the integrated flow meter may be used as it is. And based on the result which the component analyzer 8 measured, the carbon dioxide emission amount is calculated. Specifically, if you are measuring the carbon dioxide concentration in the exhaust gas,

CO ₂ emissions [kg] = CO ₂ concentration per unit volume in the exhaust gas [kg / m ³ ]
× Total exhaust gas [m ³ ]

  Is required. In addition, if the component analyzer 8 measures the carbon composition amount in the fuel, it is assumed that the carbon component in the fuel is completely burned and all changes to carbon dioxide,

CO ₂ emissions [kg] = Fuel consumption rate [m ³ / h] x Operating time [h]
× Carbon content in fuel [kg / m ³ ] × (CO ₂ molecular weight / carbon atomic weight)

Can be obtained.

  Then, by subtracting the calculated amount of carbon dioxide from the amount of carbon dioxide discharged before introduction of the exhaust heat recovery compressor that has been measured in advance, the amount of decrease in exhausted carbon dioxide can be calculated. This reduced amount becomes the desired emission allowance data.

  Next, the terminal device 91b of the consignor 91 periodically transmits the monitoring data and the desired emission allowance data calculated in step S122 to the server 41b of the emission allowance authentication organization 41 (S125).

  The server 41b of the emission allowance certification body 41 receives the monitoring data and the desired emission allowance data that have been sent, confirms whether there are any deficiencies in the data, examines the desired emission allowance data, and if there is no problem In step S126, the amount of emission allowance is determined. Then, the determined amount of allowance is notified to the consignor 91 (S127) and further notified to the finance department 97 (S128).

  Next, the consignor 91 transfers 60% of the allowance amount determined by the emission allowance certification body 41 from the account of the consignor 91 to the account of the finance department 97 in accordance with the contents of the contract with the finance department 97. Apply to the emission allowance registry management organization 42 as follows. In other words, the terminal device 91b of the consignor 91 transmits the identification of the conversion source account, the identification of the transfer destination account, the data of the emission allowance amount to be transferred, and the like to the server 42b of the emission allowance registry management organization 42 (S129). Table 1 shows examples of information on the application for emission allowance transfer.

As shown in Table 1, before the transfer, there was an allowance in the account of the consignor 91, but after the transfer, the identification number of the allowance changed and it was transferred to the finance department 97. This is to indicate that the emission allowance to be transferred is an emission allowance generated by the greenhouse gas reduction project by changing the identification number of the emission allowance.
The discharge frame identification number is a number uniquely assigned to each discharge frame 1t.

  The server 42b of the emission allowance registry management organization 42 that has received the information on the allowance transfer application transfers the information of the allowance transfer application to the server 43b of the transaction log management organization 43, and there is a problem with the transfer of the requested allowance transfer. Confirmation of transfer authentication is performed (S130). Here, when the server 43b of the transaction log management organization 43 determines that there is no problem with the requested transfer, the server 43b transmits the transfer authentication information to the server 42b of the emission allowance registry management organization 42. (S131).

The server 42b of the emission allowance registry management organization 42 that has received the transfer certification information rewrites the emission allowance registry according to the information of the allowance transfer application (S132), and the allowance is transferred from the account of the consignor 91 to the finance department 97. Transfer to account.
After the rewriting of the allowance register is completed, the server 42b of the allowance register management organization 42 transmits a notice of the end of the transfer of the allowance to the server 97b of the finance department 97 (S133). The terminal device 91b is notified of the end of transfer of the discharge allowance (S134).

Through the above process, the acquired emission allowance by the power generation business using methane generated by the coal mine excavation is distributed to the finance department 97 and the consignor 91.
Further, when the finance department 97 wants to exchange the CO ₂ emission allowance, the CO ₂ emission allowance is transferred from the finance department 97 to the person who wishes to obtain the emission allowance 44 in the same manner as when the CO ₂ emission allowance is transferred from the consignor 91 to the finance department 97. ₂ emission allowances should be relocated.

(Transaction example 2)
Next, the case of Transaction Example 2 will be described. Since transaction example 2 has the same basic flow as transaction example 1, the description will focus on the different parts.

In Transaction Example 2, since the amount of fuel gas consumption is kept constant and the amount of consignment is increased, it is easy to calculate profit based on the amount of consignment. Therefore, as shown in FIG. 15, when the information on the existing equipment is transferred from the consignor 91 to the compressor business unit 96 (S141), the consignment fee per unit amount is also provided as information.
And since the amount of consignment is used for calculation of the consideration, as shown in step S142, the amount of consignment is measured during operation (S142), and the amount of consignment is multiplied by the consignment postage per unit amount to calculate the income. .

Then, according to the distribution rate determined in the contract between the consignor 91 and the finance department 97, a part of the income obtained by the consignor 91 is paid to the finance department 97 as a consideration (S143). Or, instead of money, the free use right of the pipeline is transferred from the consignor 91 to the finance department 97 (S143).
When the finance division 97 obtains the consideration with the free use right of the pipeline, it obtains money by cashing it in the gas market GM (S144).

  When calculating revenue with the amount of consignment as in Transaction Example 2, it is necessary to install a flow meter that measures the amount of consignment, but the natural gas producer 90 has traditionally used it for calculating consignment shipping costs. If there is a flow meter, it can be used as it is. If there is no existing flow meter, for example, a flow meter is installed at the downstream end of the pipeline within the scope of the consignor 91, and the flow rate of natural gas (fuel gas) is measured regularly, regularly or irregularly. . Alternatively, the total amount of gas consumed as the power of the gas compressor is subtracted from the flow rate of natural gas passing through the boosting station BSn at the specific position shown in FIG. 1 at the boosting stations BSn + 1, BSn + 2. But you can measure the delivery.

(Transaction example 3)
In Transaction Example 3, the waste heat recovery compressor 10 is introduced and operated without changing the amount of fuel gas consumed by the gas compressor at the boosting station, and revenue is generated based on the increase in the amount of consignment as in Transaction Example 2. Furthermore, the CO ₂ emission allowance is recognized by improving the capacity of the gas compressor, and this CO ₂ emission allowance is converted into the CO ₂ emission allowance market to obtain income.
Therefore, the increased amount of consignment amount data and the desired emission allowance data are transmitted from the terminal device 91b of the consignor 91 to the server 41b of the emission allowance authentication organization 41, and the authentication is received.
After receiving the authentication and admitting the allowance, it is the same as in the case of Transaction Example 1.

  As mentioned above, although the desirable form of this invention was demonstrated, this invention can be changed suitably and implemented unless it is contrary to the meaning.

It is a schematic diagram of a natural gas pipeline. It is a block diagram of the pressure | voltage rise station of a fuel gas. It is a figure which shows the 1st modification of a pressure | voltage rise station. It is a figure which shows the 2nd modification of a pressure | voltage rise station. It is a figure which shows the 3rd modification of a pressure | voltage rise station. It is the schematic of the connection part of a pressure | voltage rise station and a pipeline. It is a figure which shows an example of the business scheme using this invention. It is a figure which shows the other example of the business scheme using this invention. It is a figure which shows the further another example of the business scheme using this invention. It is a flowchart which shows the example of a transaction using this invention. It is a block diagram of an investment recovery plan support system. It is a functional block diagram of an investment recovery plan support system. It is a diagram showing a transaction form of CO ₂ emission allowances. It is a flowchart showing a transaction example of CO ₂ emission allowances. It is a flowchart which shows the other example of a transaction using this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Air compressor 3 Combustor 3a Shunt pipe 4 Gas turbine 5 1st compressor 6 Flowmeter 7 Management terminal 10 Waste heat recovery compressor 11 Waste heat recovery boiler 12 Steam turbine 13 Generator 14 Motor 15 2nd compressor 16 Water recovery device 17 System linkage unit 18 Power monitor 19 Bypass valve 20 Inflow valve 21 Outflow valve 30 Investment recovery plan support system 31a Initial cost input unit 31b Fuel reduction rate input unit 31c Commissioned amount input unit 31d Distribution rate input unit 31e Collection period input unit 31f Commissioned amount Incremental input unit 32 Revenue calculation unit 33 Retrievability determination unit 35a Gas market database 35b Emission allowance market database BS Boosting station PL Pipeline

Claims (25)

A fuel gas pipeline facility having a boosting facility for fuel gas to be transported in the middle of the fuel gas pipeline,
The boosting equipment includes an air compressor, a combustor that burns supplied fuel using compressed air compressed by the air compressor, and a gas turbine that is driven by combustion gas discharged from the combustor And a compressor driven by using the output torque of the gas turbine to increase the pressure of the fuel gas to be transported, an exhaust heat recovery boiler that recovers exhaust heat exhausted from the gas turbine, and the exhaust heat recovery A steam turbine driven by steam discharged from the boiler,
A fuel gas pipeline facility configured to drive the compressor or another compressor for boosting the fuel gas to be transported using the output torque of the steam turbine. The fuel supplied to the combustor is a fuel gas supplied in a diverted manner from the pipeline;
The fuel gas pipeline facility according to claim 1. An open / close valve is provided before and after the boosting equipment in the pipeline,
The fuel gas pipeline facility according to claim 1.   The fuel gas pipeline facility according to claim 3, wherein the pipeline is provided with a bypass pipe separately from the booster equipment route, and an open / close valve is provided on the bypass pipe. A generator coupled to the output shaft of the steam turbine, and a motor driven by the electric power generated by the generator, the compressor or another compressor being driven by the motor;
The fuel gas pipeline facility according to claim 1. The generator is connected to an external power source or a system linkage unit for connecting an external load;
The fuel gas pipeline facility according to claim 5. Attaching a water recovery device to the exhaust heat recovery boiler;
The fuel gas pipeline facility according to claim 1. A fuel gas pipeline facility having a boosting facility for fuel gas to be transported in the middle of the fuel gas pipeline,
The boosting equipment includes:
An air compressor, a combustor that burns supplied fuel using compressed air compressed by the air compressor, a gas turbine driven by combustion gas discharged from the combustor, and An existing gas compressor including a first compressor driven using an output torque and boosting the fuel gas to be transported;
An exhaust heat recovery boiler that recovers exhaust heat exhausted from the gas turbine, a steam turbine that is driven by the steam exhausted by the exhaust heat recovery boiler, and that is driven using the rotational torque of the steam turbine and is to be transported An exhaust heat recovery compressor attached to the existing gas compressor, and a second compressor for boosting the fuel gas.
Fuel gas pipeline facility characterized by. The fuel supplied to the combustor is a fuel gas supplied in a diverted manner from the pipeline;
The fuel gas pipeline facility according to claim 8. An open / close valve is provided before and after the boosting equipment in the pipeline,
The fuel gas pipeline facility according to claim 8. In the pipeline, a bypass pipe is provided separately from the boosting equipment route, and an open / close valve is provided on the bypass pipe.
The fuel gas pipeline facility according to claim 10. A generator coupled to the output shaft of the steam turbine; and a motor driven by the electric power generated by the generator; the second compressor being driven by the motor;
The fuel gas pipeline facility according to claim 8. The generator is connected to an external power source or a system linkage unit for connecting an external load;
The fuel gas pipeline facility according to claim 12. A water recovery device is attached to the exhaust heat recovery boiler,
The fuel gas pipeline facility according to claim 8. A generator coupled to the output shaft of the steam turbine; and a motor driven by the electric power generated by the generator; the second compressor being driven by the motor;
The fuel gas pipeline facility according to claim 14. The generator is connected to a system linkage unit that connects an external power source or an external load,
The fuel gas pipeline facility according to claim 15. An instantaneous flow rate monitor for measuring the instantaneous flow rate of the fuel gas in the shunt pipe, and a communication means for transmitting the instantaneous flow rate data detected by the instantaneous flow rate monitor to a remote device;
The fuel gas pipeline facility according to claim 1. An integrated flow monitor for measuring an integrated flow rate of fuel gas in the shunt pipe, and a communication means for transmitting integrated flow rate data detected by the integrated flow monitor to a remote device;
The fuel gas pipeline facility according to claim 1. Instantaneous power monitor for measuring the instantaneous power flowing out from the generator to the external load via the grid coordinator, and communication means for transmitting the instantaneous power data detected by the instantaneous power monitor to a remote device ,
The fuel gas pipeline facility according to claim 13. An integrated power monitor that measures the integrated power flowing out from the generator to the external load via the grid coordinator, and a communication unit that transmits integrated power data detected by the integrated power monitor to a remote device. ,
The fuel gas pipeline facility according to claim 13. The fuel gas pipeline facility according to any one of claims 8 to 13,
From the benefit obtained by attaching the exhaust heat recovery compressor to an existing gas compressor in a fuel gas pipeline, an investment recovery plan support system for estimating the investment recovery possibility of the exhaust heat recovery compressor,
A gas market database storing at least the market price of the fuel gas;
An initial cost input unit for inputting an initial cost including at least equipment cost and installation cost of the exhaust heat recovery compressor;
A fuel reduction rate input unit for inputting a fuel reduction rate that is a fuel reduction amount per unit consignment amount due to the introduction of the exhaust heat recovery compressor;
A consignment amount input unit for inputting a period consignment amount that is a consignment amount per unit period;
A distribution ratio input unit for inputting a distribution ratio, which is a ratio allocated in the contract, out of profits obtained by fuel reduction;
A payback period input section for entering an investment payback period;
An income calculation unit that calculates an income by integrating the product of the gas price calculated based on the fuel reduction rate, the period consignment amount, the distribution rate, and the gas market database for an investment recovery period;
An investment recovery plan support system comprising: the income calculated by the income calculation unit; and a recoverability determination unit that compares the initial cost. Have an emission allowance market database that stores at least the market value of greenhouse gas emission allowances,
The revenue calculation unit is configured to calculate profit based on the emission allowance market database by obtaining a profit obtained by trading the greenhouse gas emission allowance obtained by introducing the exhaust heat recovery compressor, and calculate the income by adding this value What
The investment recovery plan support system according to claim 21. The fuel gas pipeline facility according to any one of claims 8 to 13,
From the benefit obtained by attaching the exhaust heat recovery compressor to an existing gas compressor in a fuel gas pipeline, an investment recovery plan support system for estimating the investment recovery possibility of the exhaust heat recovery compressor,
An initial cost input unit for inputting an initial cost including at least equipment cost and installation cost of the exhaust heat recovery compressor;
A consignment amount increment input unit for inputting an increment of consignment amount obtained by introducing the exhaust heat recovery compressor;
A unit consignment fee input unit for inputting a unit consignment fee which is a consignment fee per unit consignment amount;
A distribution ratio input unit for inputting a distribution ratio, which is a ratio allocated in the contract, out of profits obtained by fuel reduction;
A payback period input section for entering an investment payback period;
An income calculating unit that calculates an income by integrating the product of the increment of the commissioned shipping fee, the unit commissioned shipping fee, and the distribution rate for an investment recovery period; and
Including a recoverability determination unit that compares the revenue calculated by the revenue calculation unit and the initial cost;
Investment recovery plan support system characterized by Based on the instantaneous flow rate monitor for measuring the instantaneous flow rate of the fuel gas in the shunt pipe and the instantaneous flow rate data detected by the instantaneous flow rate monitor, the integrated flow rate data within a predetermined period is calculated, and the warming effect is calculated from the integrated flow rate data. Provided with a communication means for calculating the gas emission allowance amount and transmitting the data of the greenhouse effect gas emission allowance amount to a remote device;
The fuel gas pipeline facility according to claim 1. The integrated flow rate monitor that measures the integrated flow rate of fuel gas in the shunt pipe, and the warming effect gas emission allowance amount are calculated from the integrated flow rate data detected by the integrated flow rate monitor. Provided with a communication means for transmitting to a remote device;
The fuel gas pipeline facility according to claim 1.

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