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WO2018174276A1 - Procédé de fonctionnement d'un appareil de production de gaz combustible - Google Patents

Procédé de fonctionnement d'un appareil de production de gaz combustible Download PDF

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Publication number
WO2018174276A1
WO2018174276A1 PCT/JP2018/011888 JP2018011888W WO2018174276A1 WO 2018174276 A1 WO2018174276 A1 WO 2018174276A1 JP 2018011888 W JP2018011888 W JP 2018011888W WO 2018174276 A1 WO2018174276 A1 WO 2018174276A1
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Prior art keywords
fuel gas
gas
temperature
unit
desulfurization
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Ceased
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PCT/JP2018/011888
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English (en)
Japanese (ja)
Inventor
阿曽沼飛昂
清水翼
諫田貴哉
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Osaka Gas Co Ltd
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Osaka Gas Co Ltd
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Publication of WO2018174276A1 publication Critical patent/WO2018174276A1/fr
Anticipated expiration legal-status Critical
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  • the present invention relates to a desulfurization unit that desulfurizes a raw material gas that is a heavy hydrocarbon gas, and a fuel gas containing methane as a main component by reforming the desulfurization source gas supplied from the desulfurization unit with steam.
  • the present invention relates to a method for operating a fuel gas production apparatus provided with a reforming section to be used and a fuel gas return path for returning a part of the fuel gas from the reforming section to the desulfurization section.
  • the fuel gas production apparatus reforms a heavy hydrocarbon gas such as propane and butane to produce a fuel gas containing methane as a main component.
  • the produced fuel gas is a gas engine, It will be used as fuel for internal combustion engines such as gas turbines (see, for example, Patent Document 1).
  • the reforming part is modified by desulfurization treatment using the hydrogen component contained in the fuel gas returned through the fuel gas return path.
  • the quality catalyst can be prevented from being poisoned by the sulfur component.
  • Patent Document 1 omits the description of the operation method when stopping the operation by stopping the supply of the raw material gas to the desulfurization section, but purges nitrogen gas as an inert gas when starting up. It is described that oxygen in the system is removed, and then the purged nitrogen gas is circulated through the desulfurization section and the reforming section, while the nitrogen gas and the reforming section circulated by the electric heater are heated. Therefore, when the supply of the source gas to the desulfurization section is stopped and the operation is stopped, it can be considered that the desulfurization section and the reforming section are cooled to a normal temperature state and the system is opened to the atmosphere.
  • the purged nitrogen is circulated through the desulfurization section and the reforming section. It is conceivable to maintain the desulfurization section and the reforming section at a high temperature while suppressing consumption of the raw material gas and water vapor by heating the nitrogen gas or the like with an electric heater. However, in this case, every time the operation is stopped, purging nitrogen is required, and since a small amount of oxygen is contained in nitrogen, it is necessary to suppress oxidation of the reforming catalyst and the like. Moreover, hydrogen gas for removing oxygen must be supplied, and there is an inconvenience that the equipment becomes complicated due to the need to provide equipment for storing nitrogen and hydrogen gas.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to operate the fuel gas production apparatus that stops the operation in a form that can quickly resume the operation while suppressing the complexity of the equipment. Is to provide
  • the present invention relates to a desulfurization unit that desulfurizes a raw material gas that is a heavy hydrocarbon gas, and a fuel gas containing methane as a main component by reforming the desulfurization source gas supplied from the desulfurization unit with steam. And a method for operating the fuel gas production apparatus provided with a fuel gas return path for returning a part of the fuel gas from the reforming unit to the desulfurization unit.
  • the fuel gas is circulated in a state in which the fuel gas is maintained at a set standby temperature that prevents dew condensation of water vapor, and the entire amount of the fuel gas from the reforming section is returned to the desulfurization section through the circulation gas passage.
  • the pivot portion lies in performing standby operation process of circulating flow.
  • the heavy hydrocarbon gas in the present invention is a gaseous hydrocarbon having a molecular weight larger than that of methane, and includes propane, butane, ethane, and isobutane.
  • the main component is a component having a large content among the main active ingredients, and it is not necessary to contain more than 50%, and it is not necessary to be the component having the largest content. . However, if the content exceeds 50% as the main component, it is more preferable. If the content does not exceed 50%, the most preferable component is preferable.
  • the supply of water vapor is stopped and the fuel gas to be circulated is heated in the heating section.
  • the fuel gas is circulated in a state where it is maintained at a set standby temperature that is lower than the precipitation prevention temperature and prevents water vapor condensation, and the entire amount of the fuel gas from the reforming section is returned to the desulfurization section through the circulation gas passage.
  • a standby operation process for circulating and flowing by the drive unit is performed.
  • the temperature of the fuel gas is maintained at a set standby temperature that prevents the dew condensation of water vapor, so that the water vapor in the circulating and flowing fuel gas is dewed and deteriorates the reforming catalyst and the like. While avoiding this, the desulfurization part and the reforming part can be maintained at a high temperature close to the temperature of the operating state in which the fuel gas is produced.
  • the desulfurization section and the reforming section in the high temperature state close to the temperature of the operation state for producing the fuel gas are replaced with those in the operation state for producing the fuel gas. Since it is sufficient to raise the temperature, the operation can be resumed quickly.
  • the operation can be stopped in a form in which the operation can be restarted quickly while suppressing the complexity of the equipment.
  • a further characteristic configuration of the operation method of the fuel gas production apparatus of the present invention is that when the supply of the raw material gas to the desulfurization unit is stopped, the discharge of the fuel gas from the reforming unit is stopped simultaneously. And it is in the point which performs the said temperature fall process in the form which makes the internal pressure of the said gas path for a circulation high-pressure state.
  • the discharge of the fuel gas from the reforming section is stopped at the same time, and the internal pressure of the circulation gas passage is brought to a high pressure state.
  • the temperature lowering process is performed, so that the internal pressure of the processing path from the desulfurization unit to the reforming unit is maintained at a pressure close to a pressure suitable for operation.
  • the operation can be restarted more satisfactorily.
  • a further characteristic configuration of the operation method of the fuel gas production apparatus of the present invention is that the supply of the raw material gas to the desulfurization unit is stopped, and then the internal pressure of the circulation gas path is lowered to a set low pressure state.
  • the temperature lowering process is performed in such a manner that the discharge of the fuel gas to the outside is stopped and the internal pressure of the circulation gas path is set to a low pressure state.
  • the internal pressure of the circulation gas path is lowered to the set low pressure state.
  • the temperature lowering process is performed in such a manner that the discharge of the fuel gas to the outside is stopped and the internal pressure of the circulation gas path is set to a low pressure state.
  • the precipitation prevention temperature that can prevent carbon deposition caused by the thermal decomposition of the fuel gas than when the internal pressure of the circulation gas passage is in a high pressure state.
  • the desulfurization section and reforming section are maintained at a high temperature as close as possible to the temperature of the operating state for producing the fuel gas while heating the fuel gas in the heating section. it can.
  • the operation can be restarted more quickly.
  • a further characteristic configuration of the operation method of the fuel gas production apparatus of the present invention is that the heating unit includes a first heating unit that heats the fuel gas returned from the reforming unit to the desulfurization unit, and the desulfurization unit. And a second heating unit that heats the fuel gas supplied to the reforming unit.
  • the fuel gas returned from the reforming unit to the desulfurization unit can be heated by the first heating unit, and the fuel gas supplied from the desulfurization unit to the reforming unit can be heated by the second heating unit.
  • the desulfurization part and the reforming part can be appropriately maintained in a high temperature state while suppressing condensation.
  • the fuel gas that flows through the reforming unit and flows into the desulfurization unit, and the fuel gas that passes through the desulfurization unit and flows into the reforming unit can be heated by the first heating unit and the second heating unit. Therefore, since the entire fuel gas that circulates and flows can be appropriately heated to a high temperature state, the desulfurization part and the reforming part can be appropriately maintained at a high temperature state while suppressing the dew condensation of water vapor.
  • the desulfurization section and the reforming section can be appropriately maintained at a high temperature while suppressing the condensation of water vapor.
  • a further characteristic configuration of the operation method of the fuel gas production apparatus of the present invention is to maintain the set standby temperature based on a detected temperature of a first temperature sensor that detects the temperature of the fuel gas discharged from the desulfurization unit.
  • the set standby temperature is maintained based on the detected temperature of the second temperature sensor that controls the heating operation of the first heating unit and detects the temperature of the fuel gas discharged from the reforming unit.
  • the heating operation of the second heating unit is controlled.
  • the temperature of the desulfurization unit is set on standby by controlling the heating operation of the first heating unit so that the temperature of the fuel gas that has passed through the desulfurization unit is detected by the first temperature sensor and maintained at the set standby temperature.
  • the temperature of the fuel gas that has passed through the reforming section can be detected by the second temperature sensor, and the heating operation of the second heating section is controlled so as to maintain the set standby temperature. As a result, the temperature of the reforming section can be appropriately maintained at the set standby temperature.
  • the temperature of the desulfurization section and the reforming section can be appropriately maintained at the set standby temperature.
  • the temperature of the part and the reforming part can be appropriately maintained in a state close to the temperature of the operation state in which the fuel gas is produced.
  • the set standby temperature for the fuel gas that has passed through the desulfurization section may be set to a different temperature.
  • the temperature of the desulfurization section and the reforming section can be appropriately maintained in a state close to the temperature of the operation state in which the fuel gas is produced.
  • a further characteristic configuration of the operation method of the fuel gas production apparatus of the present invention is that the fuel gas from the reforming unit is supplied to a gas consuming unit mounted on a ship.
  • the fuel gas production apparatus is mounted on a ship, and the fuel gas from the reforming section is supplied to the gas consumption section mounted on the ship.
  • a transport ship that transports the source gas is suitable. And since it can change to the operation state which starts manufacture of fuel gas from the state which stopped manufacture of fuel gas quickly, supply of fuel gas to a gas consumption part can be restarted rapidly.
  • the gas consumption unit is an internal combustion engine such as an engine that drives an auxiliary device such as an air conditioner or a generator, the supply of fuel gas can be restarted quickly, so that the driving of the auxiliary device can be restarted quickly. it can.
  • the supply of the fuel gas to the gas consumption unit can be resumed quickly.
  • the fuel gas production apparatus includes a raw material gas supply unit 1 that supplies heavy hydrocarbon gas as a raw material gas F, and a raw material gas F that is supplied from the raw material gas supply unit 1 through a raw material gas supply line 2.
  • the desulfurization part 3 for desulfurizing the gas, and the desulfurization raw material gas supplied from the desulfurization part 3 through the desulfurization gas supply line 4 is reformed with steam J to obtain a fuel gas G containing methane as a main component.
  • a mass part 5 and a product gas supply line 6 for supplying the fuel gas G reformed in the reforming part 5 to the gas consumption part N are provided.
  • the source gas supply unit 1 supplies a gas obtained by raising the temperature of the LPG as the source gas F, and the source gas supply line 2 includes A raw material gas compressor 7 for increasing the pressure of the raw material gas F to an appropriate pressure (for example, about 0.90 MPaG) is provided.
  • the gas consumption unit N corresponds to, for example, an internal combustion engine such as a gas engine that drives an auxiliary device such as an air conditioner or a generator.
  • An internal combustion engine for propulsion such as a gas engine may be used as the gas consuming part N to supply the fuel gas G.
  • a steam supply unit 8 that supplies steam J for reforming treatment is connected to the desulfurization gas supply line 4.
  • a steam valve 8 ⁇ / b> A for interrupting the supply of the steam J from the steam supply unit 8 is provided.
  • the steam supply unit 8 employs a configuration that supplies steam J generated by an exhaust heat recovery boiler that recovers exhaust heat of various devices, for example. be able to.
  • a fuel gas return path 9 for returning a part of the fuel gas G from the reforming unit 5 to the desulfurization unit 3 is located upstream of the source gas compressor 7 in the product gas supply line 6 and the source gas supply line 2. And the hydrogen component contained in the fuel gas G is supplied as hydrogen gas for the desulfurization process.
  • the fuel gas return path 9 is provided with an adjustment valve 10 that adjusts the flow rate (return amount) of the fuel gas G.
  • a circulation main gas passage 11 that constitutes a circulation gas passage R that returns the entire amount of the fuel gas G from the reforming section 5 to the desulfurization section 3 is supplied to the product gas.
  • Line 6 is connected to the upstream side of source gas compressor 7 in source gas supply line 2, and the flow rate (circulation amount) of fuel gas G is adjusted in circulation main gas passage 11.
  • a circulation control valve 12 for opening and closing the circulation main gas passage 11 is provided.
  • the fuel gas return path 9 is formed in a state in which a part of the circulation main gas path 11 is also used.
  • the circulation gas path R for returning the entire amount of the fuel gas G from the reforming section 5 to the desulfurization section 3 is composed of the circulation main gas path 11 and the fuel gas return path 9. become.
  • the main gas passage 11 for circulation is provided in addition to the fuel gas return passage 9 because the amount of gas that can flow through the adjustment valve 10 can flow part of the fuel gas G from the reforming unit 5. This is because the entire amount of the fuel gas G from the reforming unit 5 cannot flow through the fuel gas return path 9.
  • a source gas valve 13 for intermittently supplying the source gas is provided at a location upstream of the connection location of the circulation main gas passage 11 in the source gas supply line 2, and a standby operation transition state and a standby operation state described later are provided.
  • the supply of the raw material gas can be stopped.
  • a product gas valve 14 that opens and closes the product gas supply line 6 is provided on the downstream side of the connection point of the fuel gas return path 9 and the circulation main gas path 11 in the product gas supply line 6. In the state and the standby operation state, the product gas supply line 6 is closed to stop the supply of the fuel gas G.
  • the fuel gas G returned from the reforming unit 5 to the desulfurization unit 3 is heated as a heating unit K that heats the fuel gas G circulated through the circulation gas path R.
  • a heating unit K that heats the fuel gas G circulated through the circulation gas path R.
  • a first heating unit K1 that performs heating
  • a second heating unit K2 that heats the fuel gas G supplied from the desulfurization unit 3 to the reforming unit 5.
  • the first heating unit K1 and the second heating unit K2 are configured using an electric heater.
  • the raw material gas valve 13 and the product gas valve 14 are opened, the water vapor valve 8A is opened to supply water vapor, the adjustment valve 10 is opened, and the circulation control valve 12 is closed.
  • the raw material gas from the raw material gas supply unit 1 is desulfurized, the desulfurized raw material gas is reformed with steam J to produce the fuel gas G, and the produced fuel gas G is The gas is supplied to the gas consumption unit N through the product gas supply line 6.
  • the temperature on the inlet side of the desulfurization unit 3 is about 300 ° C.
  • the temperature on the inlet side of the reforming unit 5 is about 350 ° C.
  • the reforming reaction in the reforming unit 5 is an exothermic reaction.
  • the temperature on the outlet side of the reforming unit 5 is configured to be about 450 ° C.
  • a nickel-based or noble metal-based low-temperature steam reforming catalyst can be used, specifically, on the surface of a non-conductive porous body having fine pores.
  • One having a metal film selected from the group consisting of palladium, silver, nickel, cobalt and copper is preferably used.
  • the desulfurization catalyst equipped in the desulfurization section 3 is configured as a combination of, for example, a nickel-molybdenum-based or cobalt-molybdenum-based catalyst and zinc oxide as an adsorbent. That is, the sulfur content in the raw material gas is removed by reducing the inactive sulfur compound in the raw material gas to hydrogen sulfide by a hydrogenation reaction using a catalyst and adsorbing the reduced hydrogen sulfide to zinc oxide. .
  • the supply amount of the water vapor J from the water vapor supply unit 8 is adjusted so that the S / C (water vapor / carbon ratio) value is, for example, 0.4 to 0.8.
  • the supply amount of the raw material gas F is detected by the flow rate sensor, and an amount of water vapor J corresponding to the supply amount of the raw material gas F is supplied from the water vapor supply unit 8. Will do.
  • the temperature lowering process as the standby operation transition state is a state in which the supply of water vapor J from the water vapor supply unit 8 is continued, and the adjustment valve 10 and the circulation control valve 12 are opened to circulate the gas path.
  • the entire amount of the fuel gas G from the reforming unit 5 is returned to the desulfurization unit 3 through R, a process of circulating and flowing the fuel gas G by the raw material gas compressor 7 functioning as a circulation drive unit is performed.
  • the raw material gas valve 13 and the product gas valve 14 are simultaneously closed to supply the raw material gas to the desulfurization unit 3. Since the discharge of the fuel gas from the reforming unit 5 to the outside is simultaneously stopped, the temperature lowering process is performed in a form in which the internal pressure of the circulation gas path R is set to a high pressure state.
  • the fuel gas return path 9 when the temperature lowering process or the standby operation process is performed, the fuel gas return path 9 is maintained in an open state, and the entire amount of the fuel gas G from the reforming unit 5 is supplied to the circulation main gas path. 11 and the fuel gas return path 9 are exemplarily illustrated. However, when the temperature lowering process or the standby operation process is performed, the fuel gas return path 9 is closed and the reforming section is passed through the circulation main gas path 11. The total amount of the fuel gas G from 5 may be made to flow. That is, as the circulation gas path R, only the circulation main gas path 11 may function.
  • FIG. After the start of the temperature lowering process as the standby operation transition state, when the temperature of the reforming section 5 falls below a precipitation prevention temperature (for example, 350 ° C. or less) at which carbon deposition due to thermal decomposition of the fuel gas G can be prevented, FIG. As shown, the standby operation processing as the standby operation state is performed.
  • the water vapor valve 8A In the standby operation process, the water vapor valve 8A is closed to stop the supply of water vapor, and the fuel gas G to be circulated and heated is heated by the heating unit K to set the temperature to be equal to or lower than the precipitation prevention temperature and prevent water vapor condensation.
  • the raw material gas compressor 7 functions as a circulation drive unit in a state where the temperature is maintained and the entire amount of the fuel gas from the reforming unit 5 is returned to the desulfurization unit 3 through the circulation gas path R. A process of circulating flow is performed.
  • the heating unit K is supplied to the reforming unit 5 from the first heating unit K1 that heats the fuel gas G returned from the reforming unit 5 to the desulfurization unit 3 as described above.
  • the second heating unit K2 for heating the fuel gas G to be heated, the fuel gas G discharged from the desulfurization unit 3 is set to, for example, 300 ° C. as the first set standby temperature that is the set standby temperature.
  • the fuel gas G that is heated and discharged from the reforming unit 5 is configured to be heated to, for example, 350 ° C. as a second set standby temperature that is a set standby temperature.
  • a first temperature sensor S1 for detecting the temperature of the fuel gas G discharged from the desulfurization unit 3 is provided, and the fuel gas G discharged from the desulfurization unit 3 is based on the detected temperature of the first temperature sensor S1.
  • the heating operation of the first heating unit K1 is controlled so as to maintain the temperature at a first set standby temperature (for example, 300 ° C.).
  • a second temperature sensor S2 for detecting the temperature of the fuel gas G discharged from the reforming unit 5 is provided, and the fuel gas discharged from the reforming unit 5 based on the temperature detected by the second temperature sensor S2.
  • the heating operation of the second heating unit K2 is controlled so that the temperature of G is maintained at a second set standby temperature (for example, 350 ° C.).
  • the temperature detected by the second temperature sensor S2 corresponds to the temperature of the reforming unit 5
  • the temperature detected by the second temperature sensor S2 is used as the temperature of the reforming unit 5 as described above.
  • a temperature sensor that detects the temperature of the reforming unit 5 may be provided in the reforming unit 5 to determine that the temperature is the deposition preventing temperature.
  • control part which controls the heating action of the 1st heating part K1 or the 2nd heating part K2 is provided, and based on the detection information of the 1st temperature sensor S1 or the 2nd temperature sensor S2, the 1st heating part K1 or Although the heating operation of the second heating unit K2 is automatically controlled, detailed description is omitted in this embodiment.
  • the temperature of each of the desulfurization unit 3 and the reforming unit 5 is set.
  • the temperature will be set close to the normal operating temperature.
  • each of the desulfurization unit 3 and the reforming unit 5 is maintained at a temperature close to the temperature in the normal operation state, when the operation for producing the fuel gas G is resumed, the desulfurization unit 3 and the reforming unit 5 The labor for heating the part 5 is reduced, and the operation for producing the fuel gas G can be restarted quickly. That is, when restarting the operation for producing the fuel gas G, the desulfurization unit 3 and the reforming unit 5 are heated to an appropriate temperature while supplying water vapor. The time for raising the temperature of the fuel cell 5 is reduced, and the operation for producing the fuel gas G can be resumed quickly.
  • a pressure sensor U is provided on the downstream side of the raw material gas compressor 7 that functions as a circulation drive unit for the fuel gas G. Then, as shown in FIG. 5, when stopping the operation by stopping the supply of the raw material gas to the desulfurization section 3, first, the raw material gas valve 13 is opened and the raw material gas valve 13 is closed, and then the pressure When the detected value of the sensor U is lowered to the set low pressure state, a pressure adjustment process for closing the product gas valve 14 is performed. Thereafter, as shown in FIG. 6, a temperature lowering process as a standby operation transition state is performed and illustration is omitted, but a standby process as a standby operation state is performed as in the above-described embodiment. The above-described temperature lowering process is executed in a state where the pressure adjustment process is completed and the detection value of the pressure sensor U is in the set low pressure state.
  • the set low pressure state can be set, for example, to a state where the pressure is higher than atmospheric pressure and 0.75 MPa or less.
  • the precipitation prevention which can prevent precipitation of carbon which arises by thermal decomposition of fuel gas rather than the case where the internal pressure of circulation gas path R is a high pressure state by the internal pressure of circulation gas path R becoming a low pressure state It is possible to set the temperature as high as possible.
  • the temperature of the fuel gas G discharged from the desulfurization unit 3 is maintained at a first set standby temperature (for example, 330 ° C.) by the first heating unit K1.
  • the heating operation is configured to be controlled.
  • the second heating unit K2 maintains the temperature of the fuel gas G discharged from the reforming unit 5 at a second set standby temperature (for example, 400 ° C.).
  • the heating operation is controlled.
  • the desulfurization unit 3 and the reforming unit 5 can be maintained in a high temperature state as close as possible to the temperature of the operation state in which the fuel gas is produced.
  • each of the desulfurization unit 3 and the reforming unit 5 is maintained at a temperature substantially close to the temperature in the normal operation state. Therefore, when the operation for producing the fuel gas G is resumed, the desulfurization unit 3 and the reforming unit 5 are restarted.
  • the time for heating the mass part 5 can be sufficiently shortened, and the operation for producing the fuel gas G can be restarted quickly. That is, when restarting the operation for producing the fuel gas G, the desulfurization unit 3 and the reforming unit 5 are heated to an appropriate temperature while supplying water vapor.
  • the time to raise the temperature of 5 becomes sufficiently short, and the operation for producing the fuel gas G can be resumed quickly.
  • the set standby temperature (the first standby temperature) for the fuel gas that has passed through the desulfurization unit 3 is set as the set standby temperature. 1 set standby temperature) and a case where the set standby temperature (second set standby temperature) for the fuel gas that has passed through the reforming unit 5 is set to different temperatures.
  • the set standby temperature passes through the reforming unit 5
  • the set standby temperature for the fuel gas that has passed through the desulfurization unit 3 is set to the set standby temperature for the fuel gas that has passed through the desulfurization unit 3, and the fuel gas that has passed through the reforming unit 5
  • the set standby temperature for may be set to the same temperature.
  • the case where the source gas compressor 7 is provided in the source gas supply line 2 is exemplified.
  • a raw material gas supply blower can be provided in place of the gas compressor 7, and in this case, the circulation drive unit can be configured by the raw material gas supply blower.
  • the gas storage unit when a gas storage unit that stores the fuel gas G is provided and the pressure of the circulated fuel gas G is lower than an appropriate pressure in the standby operation state, the gas storage unit The fuel gas may be supplied to the circulation gas path R.

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Abstract

L'invention concerne un procédé de fonctionnement d'un appareil de production de gaz combustible, ledit procédé comprenant l'arrêt du fonctionnement dans un mode dans lequel le fonctionnement peut être rapidement repris tout en éliminant les complications dans l'équipement. Lorsque le fonctionnement est arrêté par l'arrêt de l'alimentation en un gaz de matière première, qui est un gaz d'hydrocarbure lourd, vers une unité de désulfuration (3), un processus d'abaissement de température, qui fait circuler un gaz combustible (G) à l'aide d'une unité d'entraînement de circulation (7), est effectué dans un état dans lequel l'alimentation en vapeur d'eau se poursuit après que l'alimentation en gaz de matière première dans l'unité de désulfuration (3) a été arrêtée et dans un mode dans lequel la quantité totale du gaz combustible (G) est renvoyée d'une unité de modification (5) à l'unité de désulfuration (3) par l'intermédiaire d'une voie de gaz de circulation (R); par la suite, si la température de l'unité de modification (5) tombe à une température inférieure ou égale à une température de prévention de précipitation à laquelle il est possible d'empêcher la précipitation de carbone issue de la pyrolyse du gaz combustible (G), un processus de fonctionnement de veille est effectué, lequel arrête l'alimentation en vapeur d'eau, chauffe le gaz combustible en circulation (G) à l'aide d'une unité de chauffage (K) et fait circuler le gaz combustible (G) à l'aide de l'unité d'entraînement de circulation (7), dans un état dans lequel une température de veille réglée, qui est inférieure ou égale à la température de prévention de précipitation et qui empêche la condensation de vapeur d'eau, est conservée.
PCT/JP2018/011888 2017-03-23 2018-03-23 Procédé de fonctionnement d'un appareil de production de gaz combustible Ceased WO2018174276A1 (fr)

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JP2017-057454 2017-03-23
JP2017057454A JP2018159006A (ja) 2017-03-23 2017-03-23 燃料ガス製造装置の運転方法

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04159393A (ja) * 1990-10-23 1992-06-02 Hitachi Ltd 高カロリー都市ガスの製造方法
JPH0726271A (ja) * 1993-06-25 1995-01-27 Osaka Gas Co Ltd Ｓｎｇの製造法
WO2017150600A1 (fr) * 2016-03-01 2017-09-08 大阪瓦斯株式会社 Appareil d'alimentation en gaz combustible et procédé d'alimentation en gaz combustible

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04159393A (ja) * 1990-10-23 1992-06-02 Hitachi Ltd 高カロリー都市ガスの製造方法
JPH0726271A (ja) * 1993-06-25 1995-01-27 Osaka Gas Co Ltd Ｓｎｇの製造法
WO2017150600A1 (fr) * 2016-03-01 2017-09-08 大阪瓦斯株式会社 Appareil d'alimentation en gaz combustible et procédé d'alimentation en gaz combustible

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