JP6934885B2 - 蒸発ガスの再液化装置及び蒸発ガスの再液化方法 - Google Patents
蒸発ガスの再液化装置及び蒸発ガスの再液化方法 Download PDFInfo
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- JP6934885B2 JP6934885B2 JP2018549834A JP2018549834A JP6934885B2 JP 6934885 B2 JP6934885 B2 JP 6934885B2 JP 2018549834 A JP2018549834 A JP 2018549834A JP 2018549834 A JP2018549834 A JP 2018549834A JP 6934885 B2 JP6934885 B2 JP 6934885B2
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- Prior art keywords
- evaporative gas
- gas
- expansion means
- evaporative
- compressed
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- 238000000034 method Methods 0.000 title claims description 32
- 239000007788 liquid Substances 0.000 claims description 112
- 238000007906 compression Methods 0.000 claims description 105
- 230000006835 compression Effects 0.000 claims description 96
- 239000000446 fuel Substances 0.000 claims description 74
- 239000006200 vaporizer Substances 0.000 claims description 56
- 238000001816 cooling Methods 0.000 claims description 43
- 238000001704 evaporation Methods 0.000 claims description 25
- 238000011144 upstream manufacturing Methods 0.000 claims description 25
- 239000003507 refrigerant Substances 0.000 claims description 24
- 230000008020 evaporation Effects 0.000 claims description 23
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 claims description 20
- 230000008016 vaporization Effects 0.000 claims description 17
- 238000000926 separation method Methods 0.000 claims description 8
- -1 ethylene, propylene Chemical group 0.000 claims description 6
- 238000009834 vaporization Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000032258 transport Effects 0.000 claims description 2
- 230000006837 decompression Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 857
- 239000002828 fuel tank Substances 0.000 description 28
- 238000010586 diagram Methods 0.000 description 18
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 230000008569 process Effects 0.000 description 10
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- 239000005977 Ethylene Substances 0.000 description 8
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 8
- 239000012530 fluid Substances 0.000 description 8
- 239000003345 natural gas Substances 0.000 description 4
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- 239000001273 butane Substances 0.000 description 2
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- 239000002826 coolant Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0102—Applications for fluid transport or storage on or in the water
- F17C2270/0105—Ships
-
- 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
- F25J2215/00—Processes characterised by the type or other details of the product stream
- F25J2215/62—Ethane or ethylene
-
- 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
- F25J2250/00—Details related to the use of reboiler-condensers
- F25J2250/02—Bath type boiler-condenser using thermo-siphon effect, e.g. with natural or forced circulation or pool boiling, i.e. core-in-kettle heat exchanger
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Description
Claims (12)
- 液化ガスを輸送する船舶に備えられる蒸発ガスの再液化装置において、
液化ガス貯蔵タンクで発生した蒸発ガスを多段圧縮する複数の圧縮部を有する多段圧縮機;
前記多段圧縮機で圧縮された圧縮蒸発ガスを熱交換によって冷却して再液化する熱交換部;及び
前記熱交換部で再液化された蒸発ガスを減圧させる第3膨張手段;を備え、
前記熱交換部は、
前記多段圧縮機で圧縮された圧縮蒸発ガスと、前記液化ガス貯蔵タンクから多段圧縮機に供給される圧縮前の蒸発ガスとを熱交換させて、前記圧縮蒸発ガスを冷却する熱交換器;及び
前記圧縮蒸発ガスの一部を膨張させて、膨張された膨張蒸発ガスと残りの圧縮蒸発ガスとを熱交換させて、残りの圧縮蒸発ガスを冷却する中間冷却器;を備え、
前記中間冷却器で熱交換された後に排出される膨張蒸発ガスは、前記多段圧縮機の複数の圧縮部のうちいずれか1つ以上の圧縮部の上流に供給され、
前記中間冷却器を複数備え、
複数の中間冷却器は直列に連結され、
上流に設置される中間冷却器の冷媒として使用された膨張蒸発ガスは、前記複数の圧縮部のうち下流に設置された中間冷却器の冷媒として使用された膨張蒸発ガスより下流に供給されることを特徴とする蒸発ガスの再液化装置。 - 前記熱交換部は、
前記圧縮蒸発ガスと前記液化ガスを燃料として使用する船内燃料需要先に供給される液化ガスとを熱交換させて、前記圧縮蒸発ガスを冷却し、燃料として使用される液化ガスを気化させる気化器;を更に備えることを特徴とする請求項1に記載の蒸発ガスの再液化装置。 - 前記熱交換部は、
前記熱交換器で冷却された圧縮蒸発ガスの一部を分岐させて膨張によって温度を低下させる第1膨張手段;
前記第1膨張手段によって温度が低下した膨張蒸発ガスと、前記第1膨張手段に分岐させて残った他の圧縮蒸発ガスとを熱交換させて前記圧縮蒸発ガスを冷却する第1中間冷却器;
前記第1中間冷却器で冷却された蒸発ガスの一部を分岐させて膨張によって温度を低下させる第2膨張手段;及び
前記第2膨張手段によって温度が低下した膨張蒸発ガスと前記第2膨張手段に分岐させて残った他の蒸発ガスとを熱交換させて前記他の蒸発ガスを冷却して前記第3膨張手段に供給する第2中間冷却器;を備えることを特徴とする請求項1に記載の蒸発ガスの再液化装置。 - 前記熱交換部は、
前記熱交換器で冷却された圧縮蒸発ガスの一部を分岐させて膨張によって温度を低下させる第1膨張手段;
前記第1膨張手段によって温度が低下した膨張蒸発ガスと、前記第1膨張手段に分岐させて残った他の圧縮蒸発ガスとを熱交換させて前記圧縮蒸発ガスを冷却する第1中間冷却器;
前記第1中間冷却器で冷却された蒸発ガスと、船内燃料として供給される液化ガスとを熱交換させて、前記圧縮蒸発ガスを冷却し、前記船内燃料として供給される液化ガスを加熱する気化器;
前記気化器で冷却された蒸発ガスの一部を分岐させて膨張によって温度を低下させる第2膨張手段;及び
前記第2膨張手段によって温度が低下した膨張蒸発ガスと前記第2膨張手段に分岐させて残った他の蒸発ガスとを熱交換させて、前記他の蒸発ガスを冷却する第2中間冷却器;を備え、
前記第2中間冷却器によって冷却された蒸発ガスは前記第3膨張手段に供給され、前記気化器によって加熱された液化ガスは船内燃料需要先に供給されることを特徴とする請求項1に記載の蒸発ガスの再液化装置。 - 前記熱交換部は、
前記熱交換器及び中間冷却器が一体化したマルチストリーム熱交換器;及び
前記マルチストリーム熱交換器に供給される前記圧縮蒸発ガスの一部を分岐させて膨張によって温度を低下させるマルチストリーム膨張手段;を備え、
前記マルチストリーム熱交換器では、
前記圧縮前の蒸発ガス、前記圧縮蒸発ガス及び前記マルチストリーム膨張手段によって温度が低下した膨張蒸発ガスを熱交換させて、圧縮蒸発ガスが圧縮前の蒸発ガス及び膨張蒸発ガスによって冷却されることを特徴とする請求項1に記載の蒸発ガスの再液化装置。 - 前記熱交換部は、
前記マルチストリーム熱交換器によって冷却された蒸発ガスと船内燃料として供給される液化ガスとを熱交換させて、蒸発ガスを冷却する気化器;をさらに備え、
前記気化器によって冷却された蒸発ガスは前記第3膨張手段に供給され、前記気化器によって加熱された液化ガスは船内燃料需要先に供給されることを特徴とする請求項5に記載の蒸発ガスの再液化装置。 - 前記熱交換部は、
前記熱交換器で冷却された蒸発ガスと船内燃料として供給される液化ガスとを熱交換させて、蒸発ガスを冷却し、前記船内燃料として供給される液化ガスを加熱する気化器;
前記気化器によって冷却された圧縮蒸発ガスの一部を分岐させて膨張によって温度を低下させる第2膨張手段;及び
前記第2膨張手段によって温度が低下した膨張蒸発ガスと、前記第2膨張手段に分岐させて残った他の圧縮蒸発ガスとを熱交換させて、前記圧縮蒸発ガスを冷却する第2中間冷却器;を備え、
前記第2中間冷却器によって冷却された蒸発ガスは前記第3膨張手段に供給され、前記気化器によって加熱された液化ガスは船内燃料需要先に供給されることを特徴とする請求項1に記載の蒸発ガスの再液化装置。 - 前記液化ガス貯蔵タンクに貯蔵される液化ガス及び船内燃料として供給される液化ガスは、エタン、エチレン、プロピレン及びLPGのいずれか1つであることを特徴とする請求項1に記載の蒸発ガスの再液化装置。
- 前記第3膨張手段を通過した蒸発ガスを気液分離し、
再液化された液体状態の蒸発ガス、または再液化された液体状態の蒸発ガス及び再液化されなかった気体状態の蒸発ガスを、前記液化ガス貯蔵タンクに供給するか、または再液化された液体状態の蒸発ガスを前記液化ガス貯蔵タンクに供給して気体状態の蒸発ガスを前記多段圧縮機に供給する気液分離器;をさらに備えることを特徴とする請求項1に記載の蒸発ガスの再液化装置。 - 液化ガスを輸送する船舶に適用される蒸発ガスの再液化方法において、
液化ガスを貯蔵する液化ガス貯蔵タンクから排出される蒸発ガスを複数の圧縮部で圧縮する圧縮ステップ;
圧縮された蒸発ガスを複数のステップにわたって冷却する冷却ステップ;及び
冷却によって再液化された蒸発ガスを減圧させる減圧ステップ;を含み、
前記冷却ステップは、
前記圧縮ステップで圧縮された圧縮蒸発ガスと圧縮前の蒸発ガスとを熱交換させて、前記圧縮蒸発ガスを冷却する熱交換ステップ;及び
前記熱交換ステップで冷却された圧縮蒸発ガスの一部を分岐させて膨張させ、膨張させた膨張蒸発ガスと残りの圧縮蒸発ガスとを熱交換させて、残りの圧縮蒸発ガスを冷却する中間熱交換ステップ;を含み、
前記中間熱交換ステップを直列に連結される複数の中間冷却器で実施し、上流に設置される中間冷却器の冷媒として使用された膨張蒸発ガスを、前記複数の圧縮部のうち下流に設置された中間冷却器の冷媒として使用された膨張蒸発ガスより下流に供給することを特徴とする蒸発ガスの再液化方法。 - 前記冷却ステップは、
前記圧縮蒸発ガスと前記液化ガスを燃料として使用する船内燃料需要先に供給される液化ガスとを熱交換させて、圧縮蒸発ガスを冷却し、船内燃料として使用される液化ガスを気化させる気化ステップ;を含むことを特徴とする請求項10に記載の蒸発ガスの再液化方法。 - 減圧された蒸発ガスを気液分離する気液分離ステップ;をさらに含み、
前記気液分離ステップで分離された液体状態の再液化蒸発ガスを前記液化ガス貯蔵タンクに戻し、
前記気液分離ステップで分離された気体状態の再液化されなかった蒸発ガスを、前記液化ガス貯蔵タンクに戻すか、前記圧縮ステップに供給することを特徴とする請求項10に記載の蒸発ガスの再液化方法。
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CN104864681B (zh) | 2015-05-29 | 2017-11-07 | 新奥科技发展有限公司 | 一种天然气管网压力能回收利用方法及系统 |
CN204963420U (zh) | 2015-09-14 | 2016-01-13 | 成都深冷液化设备股份有限公司 | 一种用于lng接收站和调峰站的lng贮槽、lng运输船的bog再液化装置 |
KR20150125634A (ko) * | 2015-10-23 | 2015-11-09 | 대우조선해양 주식회사 | 선박의 증발가스 처리 시스템 |
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2016
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US11136104B2 (en) | 2021-10-05 |
SG11201808336SA (en) | 2018-10-30 |
EP3437980A4 (en) | 2019-12-04 |
WO2017171163A1 (ko) | 2017-10-05 |
CN108883816B (zh) | 2021-08-03 |
WO2017171166A1 (ko) | 2017-10-05 |
EP3437982A1 (en) | 2019-02-06 |
RU2715973C1 (ru) | 2020-03-04 |
US11760462B2 (en) | 2023-09-19 |
WO2017171172A1 (ko) | 2017-10-05 |
EP3437982A4 (en) | 2019-12-04 |
KR20170112946A (ko) | 2017-10-12 |
US20210129970A1 (en) | 2021-05-06 |
JP2019509937A (ja) | 2019-04-11 |
RU2719540C1 (ru) | 2020-04-21 |
CN108883817B (zh) | 2021-03-30 |
CN108883817A (zh) | 2018-11-23 |
US20190112008A1 (en) | 2019-04-18 |
WO2017171164A1 (ko) | 2017-10-05 |
US20190112022A1 (en) | 2019-04-18 |
EP3437980C0 (en) | 2024-06-12 |
CN108883816A (zh) | 2018-11-23 |
JP6910370B2 (ja) | 2021-07-28 |
JP2019509938A (ja) | 2019-04-11 |
EP3437980B1 (en) | 2024-06-12 |
US12006017B2 (en) | 2024-06-11 |
SG11201808238XA (en) | 2018-10-30 |
KR102508476B1 (ko) | 2023-03-13 |
EP3437980A1 (en) | 2019-02-06 |
US20210061434A1 (en) | 2021-03-04 |
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