JPWO2020012637A1 - 天然ガス液化装置の混合冷媒組成の決定方法 - Google Patents
天然ガス液化装置の混合冷媒組成の決定方法 Download PDFInfo
- Publication number
- JPWO2020012637A1 JPWO2020012637A1 JP2018559403A JP2018559403A JPWO2020012637A1 JP WO2020012637 A1 JPWO2020012637 A1 JP WO2020012637A1 JP 2018559403 A JP2018559403 A JP 2018559403A JP 2018559403 A JP2018559403 A JP 2018559403A JP WO2020012637 A1 JPWO2020012637 A1 JP WO2020012637A1
- Authority
- JP
- Japan
- Prior art keywords
- mixed refrigerant
- natural gas
- composition
- condition
- new
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 346
- 239000003507 refrigerant Substances 0.000 title claims abstract description 242
- 239000003345 natural gas Substances 0.000 title claims abstract description 167
- 239000000203 mixture Substances 0.000 title claims abstract description 127
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000004088 simulation Methods 0.000 claims abstract description 59
- 238000004364 calculation method Methods 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims description 40
- 230000000704 physical effect Effects 0.000 claims description 12
- 238000010586 diagram Methods 0.000 abstract description 3
- 230000006870 function Effects 0.000 description 26
- 239000007789 gas Substances 0.000 description 26
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 11
- 239000002994 raw material Substances 0.000 description 10
- 239000007921 spray Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- 239000001294 propane Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 6
- 238000000605 extraction Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000007670 refining Methods 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 239000001273 butane Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003949 liquefied natural gas Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 125000001741 organic sulfur group Chemical group 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
- F25J1/0022—Hydrocarbons, e.g. natural gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
- F25J1/0047—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using an "external" refrigerant stream in a closed vapor compression cycle
- F25J1/0052—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using an "external" refrigerant stream in a closed vapor compression cycle by vaporising a liquid refrigerant stream
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
- F25J1/0047—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using an "external" refrigerant stream in a closed vapor compression cycle
- F25J1/0052—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using an "external" refrigerant stream in a closed vapor compression cycle by vaporising a liquid refrigerant stream
- F25J1/0055—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using an "external" refrigerant stream in a closed vapor compression cycle by vaporising a liquid refrigerant stream originating from an incorporated cascade
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
- F25J1/008—Hydrocarbons
- F25J1/0087—Propane; Propylene
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0211—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle
- F25J1/0214—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle as a dual level refrigeration cascade with at least one MCR cycle
- F25J1/0215—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle as a dual level refrigeration cascade with at least one MCR cycle with one SCR cycle
- F25J1/0216—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle as a dual level refrigeration cascade with at least one MCR cycle with one SCR cycle using a C3 pre-cooling cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
- F25J1/0244—Operation; Control and regulation; Instrumentation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
- F25J1/0244—Operation; Control and regulation; Instrumentation
- F25J1/0245—Different modes, i.e. 'runs', of operation; Process control
- F25J1/0249—Controlling refrigerant inventory, i.e. composition or quantity
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
Description
Q=UA×ΔT ...(式1)
ここで、ΔTは極低温熱交換器4における天然ガスと混合冷媒との平均対数温度差[K]である。式1と、単位時間当たりの伝熱量Q及び平均対数温度差ΔTとから、UA値を算出することができる。
3 :予冷熱交換器
4 :極低温熱交換器
6 :第1圧縮機
7 :第2圧縮機
8 :第3圧縮機
11A〜11F、26、29、31 :膨張弁
14、15、35、36 :冷却器
41〜44 :補充量調節弁
46、47 :抜出量調節弁
50 :制御装置
Claims (6)
- 天然ガス及び混合冷媒を予冷用冷媒によって冷却する予冷熱交換器と、前記予冷熱交換器によって冷却された前記天然ガスを前記混合冷媒によって液化する極低温熱交換器と、前記予冷用冷媒及び前記混合冷媒を圧縮する複数の圧縮機とを有する天然ガス液化装置の混合冷媒組成の決定方法であって、
前記天然ガス液化装置のある時点の稼働条件である第1条件に基づいて、前記天然ガス液化装置のシミュレーションモデルを作成するモデル作成工程と、
前記極低温熱交換器の総括伝熱係数に伝熱面積を乗じた値であるUA値を、前記シミュレーションモデルと前記第1条件とに基づいてUA0として算出するUA0算出工程と、
前記第1条件の前記天然ガスの供給条件と相違する前記天然ガスの新しい供給条件である新NG供給条件と前記UA0とに基づいて、前記第1条件における前記天然ガスの供給条件を前記新NG供給条件に変更した第2条件において期待される前記UA値をUA1として算出するUA1算出工程と、
前記第1条件の前記混合冷媒組成と相違する前記混合冷媒組成の候補を候補組成として複数作成する候補組成作成工程と、
前記候補組成のそれぞれに対し、前記新NG供給条件、前記候補組成、及び前記UA1に基づいて前記シミュレーションモデルを使用してシミュレーションを実行することによって、前記新NG供給条件及び前記候補組成を含む第3条件において期待される前記UA値をUA2として算出すると共に、前記第3条件のそれぞれに対して複数の前記圧縮機の総消費動力を算出する動力試算工程と、
複数の前記候補組成のうちから、対応する前記総消費動力が最も小さい前記候補組成を前記混合冷媒の新組成として決定する組成決定工程とを有することを特徴とする天然ガス液化装置の混合冷媒組成の決定方法。 - 前記動力試算工程は、前記候補組成のそれぞれに対し、
前記新NG供給条件、前記候補組成、及び前記UA1に基づいて前記シミュレーションモデルを使用してシミュレーションを実行することにより、前記混合冷媒の新たな供給条件を算出する第1工程と、
前記UA1と前記第1工程において算出された前記混合冷媒の新たな供給条件とに基づいて仮UA2を算出する第2工程と、
前記UA1を最新の前記仮UA2に置換して前記第1工程及び前記第2工程を繰り返し実行し、前記仮UA2を収束させる第3工程と、
前記第3工程において収束した前記仮UA2を前記UA2として決定すると共に、前記UA2が算出されたときの前記混合冷媒の供給条件、前記新NG供給条件、及び前記候補組成を含む前記第3条件を決定し、前記第3条件に基づいて前記シミュレーションモデルを使用して複数の前記圧縮機の前記総消費動力を算出する第4工程とを有することを特徴とする請求項1に記載の天然ガス液化装置の混合冷媒組成の決定方法。 - 前記第2工程は、前記UA値と前記混合冷媒の質量流量との関係に基づいて規定されたUA2算出用関数を使用し、前記UA1と前記第1工程において算出された前記混合冷媒の新たな供給条件とに基づいて前記仮UA2を算出することを特徴とする請求項2に記載の天然ガス液化装置の混合冷媒組成の決定方法。
- 前記UA2算出用関数は、前記UA値と前記混合冷媒の質量流量と前記混合冷媒の物性値とに基づいて規定された関数であることを特徴とする請求項3に記載の天然ガス液化装置の混合冷媒組成の決定方法。
- 前記UA1算出工程は、前記UA値と前記天然ガスの質量流量との関係に基づいて規定されたUA1算出用関数を使用し、前記UA0と前記第2条件とに基づいて前記UA1を算出することを特徴とする請求項3又は請求項4に記載の天然ガス液化装置の混合冷媒組成の決定方法。
- 前記UA1算出用関数は、前記UA値と前記天然ガスの質量流量と前記天然ガスの物性値との関係に基づいて規定された関数であることを特徴とする請求項5に記載の天然ガス液化装置の混合冷媒組成の決定方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2018/026481 WO2020012637A1 (ja) | 2018-07-13 | 2018-07-13 | 天然ガス液化装置の混合冷媒組成の決定方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP6470482B1 JP6470482B1 (ja) | 2019-02-13 |
JPWO2020012637A1 true JPWO2020012637A1 (ja) | 2020-07-16 |
Family
ID=65358125
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2018559403A Active JP6470482B1 (ja) | 2018-07-13 | 2018-07-13 | 天然ガス液化装置の混合冷媒組成の決定方法 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP6470482B1 (ja) |
WO (1) | WO2020012637A1 (ja) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5139548A (en) * | 1991-07-31 | 1992-08-18 | Air Products And Chemicals, Inc. | Gas liquefaction process control system |
EP1794262A4 (en) * | 2004-06-18 | 2010-03-03 | Exxonmobil Upstream Res Co | DESIGN OF A HYDROCARBON FLUID PROCESSING SYSTEM |
JP5868938B2 (ja) * | 2010-03-25 | 2016-02-24 | ザ・ユニバーシティ・オブ・マンチェスターThe University Of Manchester | 冷却プロセス |
MY190843A (en) * | 2016-03-10 | 2022-05-12 | Jgc Corp | Method of determining mixed refrigerant composition for natural gas liquefying apparatus |
-
2018
- 2018-07-13 WO PCT/JP2018/026481 patent/WO2020012637A1/ja active Application Filing
- 2018-07-13 JP JP2018559403A patent/JP6470482B1/ja active Active
Also Published As
Publication number | Publication date |
---|---|
WO2020012637A1 (ja) | 2020-01-16 |
JP6470482B1 (ja) | 2019-02-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
RU2686355C1 (ru) | Способ определения состава смешанного хладагента для установки сжижения природного газа | |
JP4879730B2 (ja) | メタンに富むガス状原料を液化して液化天然ガスを得る方法 | |
KR101894076B1 (ko) | 천연가스의 액화 시스템 및 액화 방법 | |
AU2015212280B2 (en) | Liquefied gas producing facility and liquefied gas producing method | |
CN102472572B (zh) | 用于生产冷却的烃流的方法和设备 | |
CN207922696U (zh) | 用于冷却碳氢化合物原料流的装置 | |
Mehrpooya et al. | An optimization of capital and operating alternatives in a NGL recovery unit | |
WO2021240689A1 (ja) | 液化天然ガスプラントの運転条件決定方法及びそのシステム | |
Wang et al. | Performance analyses on four configurations of natural gas liquefaction process operating with mixed refrigerants and a rectifying column | |
BR112015025949B1 (pt) | Método e aparelho para produzir uma corrente de hidrocarboneto liquefeito | |
Gong et al. | Study of the single-stage mixed-gases refrigeration cycle for cooling temperature-distributed heat loads | |
JP6470482B1 (ja) | 天然ガス液化装置の混合冷媒組成の決定方法 | |
EP3090215B1 (en) | Controlling refrigeration compression systems | |
CN105865661A (zh) | 容积式增焓压缩机制冷量测试装置及测试方法 | |
CN111684224B (zh) | 混合制冷剂系统和方法 | |
RU2344360C1 (ru) | Способ сжижения газа и установка для его осуществления | |
CN109186141A (zh) | 一种过冷经济器控制方法、过冷控制装置及多联机系统 | |
EP3285034A2 (en) | Natural gas liquefaction process | |
US11874056B2 (en) | Operation guidance searching method and operation guidance searching system | |
JP6517251B2 (ja) | 天然ガスの液化システム及び液化方法 | |
CN112668070A (zh) | 结合软件的双级压缩制冷循环压焓图绘制方法 | |
Kamalinejad et al. | Optimal synthesis of cascade refrigeration in liquefied natural gas cycles by pinch-exergy |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20181109 |
|
A871 | Explanation of circumstances concerning accelerated examination |
Free format text: JAPANESE INTERMEDIATE CODE: A871 Effective date: 20181112 |
|
A975 | Report on accelerated examination |
Free format text: JAPANESE INTERMEDIATE CODE: A971005 Effective date: 20181126 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20190108 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20190117 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6470482 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |