WO2020115822A1 - Vaporisateur d'ammoniac - Google Patents

Vaporisateur d'ammoniac Download PDF

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Publication number
WO2020115822A1
WO2020115822A1 PCT/JP2018/044609 JP2018044609W WO2020115822A1 WO 2020115822 A1 WO2020115822 A1 WO 2020115822A1 JP 2018044609 W JP2018044609 W JP 2018044609W WO 2020115822 A1 WO2020115822 A1 WO 2020115822A1
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WO
WIPO (PCT)
Prior art keywords
vaporizer
ammonia
pipe
heat exchange
steam
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Application number
PCT/JP2018/044609
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English (en)
Japanese (ja)
Inventor
博昭 谷川
泰孝 和田
昭人 織田
Original Assignee
中国電力株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 中国電力株式会社 filed Critical 中国電力株式会社
Priority to JP2019527579A priority Critical patent/JPWO2020115822A1/ja
Priority to PCT/JP2018/044609 priority patent/WO2020115822A1/fr
Publication of WO2020115822A1 publication Critical patent/WO2020115822A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J7/00—Apparatus for generating gases

Definitions

  • the present invention relates to an ammonia vaporizer.
  • Patent Document 1 An ammonia vaporizer that vaporizes liquid ammonia into ammonia gas is known (see Patent Document 1).
  • the liquid ammonia sent from the ammonia storage tank is vaporized by the heat of the vapor into ammonia gas.
  • ⁇ Liquid ammonia exchanges heat with vapor to vaporize it, but it is desired to reduce the amount of vapor used.
  • the present invention has been made in view of the above problems, and an object thereof is to reduce the amount of vapor used when vaporizing liquid ammonia to generate ammonia gas.
  • An ammonia vaporizer includes a first vaporizer that vaporizes liquid ammonia to produce ammonia gas, and a liquid that is connected to the first vaporizer and remains in the vaporization treatment of the first vaporizer.
  • a second vaporizer for vaporizing ammonia to produce ammonia gas.
  • the liquid ammonia remaining in the vaporization process of the first vaporizer is vaporized in the second vaporizer, thereby reducing the amount of vapor used in the vaporization process of the second vaporizer. be able to.
  • FIG. 1 is a schematic diagram showing a thermal power generation system according to a first embodiment of the present invention.
  • FIG. 2 is a schematic diagram showing a thermal power generation system according to a second embodiment of the present invention.
  • FIG. 1 is a schematic diagram showing a thermal power generation system according to a first embodiment of the present invention.
  • the thermal power generation system 1 includes an ammonia vaporizer 100, a boiler 200, a turbine 300, a generator 400, and a condenser 500.
  • the ammonia gas generated by the ammonia vaporizer according to the present embodiment is used, for example, when heating the boiler of the thermal power plant.
  • the ammonia vaporizer 100 includes an ammonia storage tank 30, a first vaporizer 10, a second vaporizer 20, and a pump 40.
  • the ammonia storage tank 30 and the first vaporizer 10 are connected via a first pipe 11.
  • the first vaporizer 10 and the second vaporizer 20 are connected via a second pipe 12.
  • the third pipe 13 is connected to the second vaporizer 20.
  • the third pipe 13 is connected to the burner 210.
  • the first vaporizer 10 is connected to an inlet side pipe into which seawater that is the first heat exchange medium flows and an outlet side pipe from which seawater flows out.
  • the inlet side pipe is the fourth pipe 14 and the fifth pipe 15, and the outlet side pipe is the sixth pipe 16. That is, the pump 40 is connected to the fourth pipe 14, and the pump 40 and the first vaporizer 10 are connected to each other via the fifth pipe 15.
  • the outlet side pipe is the sixth pipe 16.
  • the second vaporizer 20 is connected to an inlet side pipe into which steam as a second heat exchange medium flows and an outlet side pipe from which steam flows out.
  • the inlet side pipe is the seventh pipe 17, and the outlet side pipe is the eighth pipe 18.
  • the first vaporizer 10 performs vaporization treatment that heats liquid ammonia to produce ammonia gas.
  • the boiling point of ammonia is ⁇ 33.3° C., which is lower than the temperature of seawater (eg, 20° C.). Therefore, liquid ammonia exchanges heat with seawater to become ammonia gas.
  • the second vaporizer 20 performs vaporization treatment that heats the liquid ammonia remaining in the vaporization treatment of the first vaporizer 10 into ammonia gas.
  • the boiling point of ammonia is ⁇ 33.3° C., which is lower than the temperature of steam (eg, 600° C.). Therefore, the liquid ammonia exchanges heat with the vapor to become ammonia gas.
  • a boiler 210 is provided in the boiler 200.
  • ammonia gas is burned to generate heat, and the water in the boiler 200 is turned into steam.
  • the boiler 200 is connected to the turbine 300 via the ninth pipe 201. Steam circulates inside the ninth pipe 201.
  • a generator 400 is connected to the turbine 300. When the turbine 300 rotates, the generator 400 connected to the turbine 300 generates electric power.
  • the turbine 300 is connected to the condenser 500 via the tenth pipe 202. Steam circulates inside the tenth pipe 202.
  • the condenser 500 is connected to the boiler 200 via the eleventh pipe 203. Water circulates inside the tenth pipe 202.
  • the ammonia vaporizer 100 will be described.
  • Liquid ammonia is stored inside the ammonia storage tank 30. Since the ammonia storage tank 30 and the first vaporizer 10 are connected by the first pipe 11, liquid ammonia flows into the first vaporizer 10 from the first pipe 11. Further, seawater flows into the first vaporizer 10 from the fifth pipe 15.
  • the temperature of seawater (for example, 20° C.) is higher than ⁇ 33.3° C., which is the boiling point of ammonia. Therefore, when heat exchange is performed between the liquid ammonia and seawater, the liquid ammonia is vaporized to become ammonia gas.
  • the entire amount of liquid ammonia flowing in from the first pipe 11 is not vaporized into ammonia gas.
  • the liquid ammonia remaining in the vaporization process and the ammonia gas are mixed with each other through the second pipe 12 2 to the vaporizer 20.
  • the seawater flows out from the sixth pipe 16 after the heat exchange is completed.
  • the first vaporizer 10 cannot completely vaporize the liquid ammonia, the liquid ammonia and ammonia gas remaining in the vaporization flow into the second vaporizer 20 from the second pipe 12.
  • the ammonia gas vaporized in the first vaporizer 10 and the liquid ammonia that has been left without being vaporized in the first vaporizer 10 flow through the second pipe 12.
  • the temperature of the vapor is, for example, 600° C., which is higher than ⁇ 33.3° C., which is the boiling point of ammonia. Therefore, when heat exchange is performed between the liquid ammonia and the vapor, the liquid ammonia is vaporized to become ammonia gas.
  • the liquid ammonia that has not been completely vaporized in the first vaporizer 10 is vaporized again to be ammonia gas, so that the amount of vapor used can be reduced.
  • Ammonia gas obtained by vaporization in the second vaporizer 20 is sent to the burner 210 from the third pipe 13.
  • the steam flows out from the eighth pipe 18 after the heat exchange is completed.
  • the temperature of the steam that is the second heat exchange medium (for example, 600° C.) is higher than the temperature of seawater that is the first heat exchange medium (for example, 20° C.).
  • the ammonia gas obtained by the vaporization process in the second vaporizer 20 is burned to generate heat, and the water in the boiler 200 is turned into steam.
  • the steam of the boiler 200 is sent to the turbine 300, and the turbine 300 is rotated by the steam.
  • power is generated by the generator 400 connected to the turbine 300.
  • the steam from the turbine 300 is sent to the condenser 500 via the tenth pipe 202.
  • the condenser 500 the steam discharged from the turbine 300 is cooled and condensed to return to water.
  • the water is sent to the boiler 200 via the eleventh pipe 203.
  • part of the steam discharged from the boiler 200 may be sent to the second vaporizer 20 via the seventh pipe 17.
  • the ammonia vaporizer 100 includes the first vaporizer 10 that vaporizes liquid ammonia into ammonia gas, and the first vaporizer that is connected to the first vaporizer 10.
  • the second vaporizer 20 which vaporizes the liquid ammonia remaining in the vaporization treatment of 10 to produce ammonia gas.
  • the first vaporizer 10 and the second vaporizer 20 are connected in series. Therefore, the amount of vapor used in the vaporization process of the second vaporizer 20 is further reduced by vaporizing the liquid ammonia remaining in the vaporization process of the first vaporizer 10 by the second vaporizer 20.
  • the liquid ammonia is vaporized as much as possible by the vaporization process of the first vaporizer 10, and the liquid ammonia that is left untreated by the first vaporizer 10 is vaporized by the second vaporizer 20 to finally obtain the final result.
  • most of the liquid ammonia charged into the first vaporizer 10 can be vaporized into ammonia gas.
  • seawater that exchanges heat with liquid ammonia
  • second Heat exchange medium steam that exchanges heat with liquid ammonia
  • the first heat exchange medium used in the first vaporizer 10 and the heat exchange medium used in the second vaporizer 20 are different from each other in this manner, the first heat exchange medium and the second heat exchange medium are individually selected. be able to. Therefore, for example, the temperature of the second heat exchange medium can be higher than that of the first heat exchange medium.
  • the temperature of steam (second heat exchange medium) is higher than that of seawater (first heat exchange medium). That is, the temperature of steam is, for example, 600° C., and the temperature of seawater is, for example, 20° C. Therefore, when liquid ammonia remains in the first vaporizer 10, the remaining liquid ammonia can be vaporized more reliably in the second vaporizer 20. As a result, the amount of steam used in the vaporization process of the second vaporizer 20 can be further reduced.
  • the first heat exchange medium is seawater. Seawater is present in large quantities and can be obtained at a low cost, so that the cost of vaporizing liquid ammonia can be suppressed.
  • the second heat exchange medium is steam. Since vapor is hotter than seawater, liquid ammonia can be vaporized with higher efficiency. Further, steam is less polluting than exhaust gas, and is desirable from the viewpoint of environmental protection.
  • the steam discharged from the boiler 200 is used as the steam that is the second heat exchange medium, it is not necessary to newly install a device that generates the steam, and thus the cost of the vaporization process of ammonia can be suppressed. ..
  • FIG. 2 is a schematic diagram showing a thermal power generation system according to a second embodiment of the present invention.
  • the ammonia gas generated by the ammonia vaporizer according to the present embodiment is used, for example, when heating a boiler of a thermal power plant.
  • the ammonia thermal power generation system 1A includes an ammonia vaporizer 100A, a boiler 200, a turbine 300, a generator 400, and a condenser 500.
  • the ammonia vaporizer 100A includes an ammonia storage tank 30, a first vaporizer 10, a second vaporizer 20, and a filter 50.
  • differences from the first embodiment will be mainly described.
  • the first vaporizer 10 is connected to an inlet side pipe into which exhaust gas that is the first heat exchange medium flows and an outlet side pipe from which exhaust gas flows out.
  • the fourth pipe 14 is connected to the filter 50, and the filter 50 and the first vaporizer 10 are connected to each other via the fifth pipe 15.
  • the outlet side pipe is the sixth pipe 16.
  • the exhaust gas flowing inside the fourth pipe 14 is purified when passing through the filter 50, and is sent to the first vaporizer 10 via the fifth pipe 15.
  • the exhaust gas that uses heat according to the present embodiment is discharged from, for example, a boiler and a gas turbine.
  • the first vaporizer 10 performs vaporization treatment that heats liquid ammonia to produce ammonia gas.
  • the temperature of the exhaust gas is 500° C., for example.
  • the boiling point of ammonia is ⁇ 33.3° C., which is lower than the temperature of exhaust gas. Therefore, the liquid ammonia exchanges heat with the exhaust gas to become ammonia gas.
  • Liquid ammonia flows into the first vaporizer 10 from the first pipe 11. Further, the exhaust gas flows into the first vaporizer 10 from the fifth pipe 15.
  • the temperature of the exhaust gas is higher than ⁇ 33.3° C., which is the boiling point of ammonia. Therefore, when heat exchange is performed between the liquid ammonia and the exhaust gas, the liquid ammonia is vaporized to become ammonia gas. Note that the exhaust gas flows out of the first vaporizer 10 through the sixth pipe 16 after the heat exchange is completed.
  • the ammonia gas obtained by the vaporization process in the second vaporizer 20 is burned to generate heat, and the water in the boiler 200 is turned into steam.
  • the steam of the boiler 200 is sent to the turbine 300, and the turbine 300 is rotated by the steam.
  • power is generated by the generator 400 connected to the turbine 300.
  • the steam from the turbine 300 is sent to the condenser 500 via the tenth pipe 202.
  • the condenser 500 the steam discharged from the turbine 300 is cooled and condensed to return to water. Water is sent to the boiler 200 through the eleventh pipe.
  • part of the steam discharged from the boiler 200 may be sent to the second vaporizer 20 via the seventh pipe 17. Further, the exhaust gas generated when heating the boiler 200 may be sent to the first vaporizer 10 via the fourth pipe 14 and the fifth pipe 15.
  • the first heat exchange medium according to this embodiment is exhaust gas, it is possible to effectively use the exhaust gas.
  • the temperature of the steam (second heat exchange medium) is higher than the temperature of the exhaust gas (first heat exchange medium).
  • the temperature of the steam is, for example, 600° C.
  • the temperature of the exhaust gas is, for example, 500° C. Therefore, when liquid ammonia remains in the vaporization process of the first vaporizer 10, the remaining liquid ammonia can be vaporized more reliably in the second vaporizer 20. As a result, the amount of steam used in the vaporization process of the second vaporizer 20 can be further reduced.
  • the exhaust gas generated when heating the boiler 200 is used as the exhaust gas which is the first heat exchange medium of the second embodiment. According to this, the exhaust gas can be effectively used. Further, the cost of vaporizing ammonia can be suppressed.
  • the ammonia vaporizers 100 and 100A two vaporizers, a first vaporizer 10 and a second vaporizer 20, are provided in a connected state.
  • more than two vaporizers may be connected in series.
  • sea water and exhaust gas were made into an example as a 1st heat exchange medium, and steam was made into an example as a 2nd heat exchange medium, the heat exchange medium is not limited to these and various heat exchange media may be applied. it can.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

Ce vaporisateur d'ammoniac comprend un premier vaporisateur dans lequel de l'ammoniaque liquide est vaporisé et transformé en gaz ammoniac, et un second vaporisateur relié au premier vaporisateur, moyennant quoi l'ammoniaque liquide laissé par la vaporisation par le premier vaporisateur est vaporisé et transformé en gaz ammoniac. L'ammoniac liquide restant provenant de la vaporisation par le premier vaporisateur est vaporisé par le second vaporisateur, ce qui permet de réduire davantage la quantité de vapeur utilisée dans la vaporisation par le second vaporisateur.
PCT/JP2018/044609 2018-12-04 2018-12-04 Vaporisateur d'ammoniac WO2020115822A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2019527579A JPWO2020115822A1 (ja) 2018-12-04 2018-12-04 アンモニア気化器
PCT/JP2018/044609 WO2020115822A1 (fr) 2018-12-04 2018-12-04 Vaporisateur d'ammoniac

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/044609 WO2020115822A1 (fr) 2018-12-04 2018-12-04 Vaporisateur d'ammoniac

Publications (1)

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WO2020115822A1 true WO2020115822A1 (fr) 2020-06-11

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JP (1) JPWO2020115822A1 (fr)
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023002814A1 (fr) * 2021-07-21 2023-01-26 三菱重工業株式会社 Unité d'alimentation en combustible à ammoniac, installation de production d'énergie et procédé d'exploitation de chaudière
WO2023248542A1 (fr) * 2022-06-24 2023-12-28 株式会社Ihi Système de production d'énergie
KR20240064586A (ko) 2021-09-09 2024-05-13 쥬가이로 고교 가부시키가이샤 연소장치
KR20240112919A (ko) 2022-03-28 2024-07-19 가부시키가이샤 아이에이치아이 기력 발전 플랜트
KR20240116504A (ko) 2022-03-28 2024-07-29 가부시키가이샤 아이에이치아이 기력 발전 플랜트

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0914588A (ja) * 1995-04-26 1997-01-17 Ebara Corp 液化ガス供給システム
JP2010271014A (ja) * 2009-05-25 2010-12-02 Chugoku Electric Power Co Inc:The アンモニア供給システム
JP2016510278A (ja) * 2012-12-28 2016-04-07 ゼネラル・エレクトリック・カンパニイ 航空機及び蒸発した極低温燃料を管理する方法
KR20170033649A (ko) * 2015-09-17 2017-03-27 현대중공업 주식회사 액화가스 재기화 시스템
KR20170033675A (ko) * 2015-09-17 2017-03-27 현대중공업 주식회사 액화가스 재기화 시스템
KR20170049663A (ko) * 2015-10-27 2017-05-11 현대중공업 주식회사 액화가스 재기화 시스템

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0914588A (ja) * 1995-04-26 1997-01-17 Ebara Corp 液化ガス供給システム
JP2010271014A (ja) * 2009-05-25 2010-12-02 Chugoku Electric Power Co Inc:The アンモニア供給システム
JP2016510278A (ja) * 2012-12-28 2016-04-07 ゼネラル・エレクトリック・カンパニイ 航空機及び蒸発した極低温燃料を管理する方法
KR20170033649A (ko) * 2015-09-17 2017-03-27 현대중공업 주식회사 액화가스 재기화 시스템
KR20170033675A (ko) * 2015-09-17 2017-03-27 현대중공업 주식회사 액화가스 재기화 시스템
KR20170049663A (ko) * 2015-10-27 2017-05-11 현대중공업 주식회사 액화가스 재기화 시스템

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023002814A1 (fr) * 2021-07-21 2023-01-26 三菱重工業株式会社 Unité d'alimentation en combustible à ammoniac, installation de production d'énergie et procédé d'exploitation de chaudière
KR20240064586A (ko) 2021-09-09 2024-05-13 쥬가이로 고교 가부시키가이샤 연소장치
KR20240112919A (ko) 2022-03-28 2024-07-19 가부시키가이샤 아이에이치아이 기력 발전 플랜트
KR20240116504A (ko) 2022-03-28 2024-07-29 가부시키가이샤 아이에이치아이 기력 발전 플랜트
WO2023248542A1 (fr) * 2022-06-24 2023-12-28 株式会社Ihi Système de production d'énergie

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