JPS6338799A - Method for reliquefying gas using cryogenic heat of low temperature liquefied gas - Google Patents
Method for reliquefying gas using cryogenic heat of low temperature liquefied gasInfo
- Publication number
- JPS6338799A JPS6338799A JP61181923A JP18192386A JPS6338799A JP S6338799 A JPS6338799 A JP S6338799A JP 61181923 A JP61181923 A JP 61181923A JP 18192386 A JP18192386 A JP 18192386A JP S6338799 A JPS6338799 A JP S6338799A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- gas
- storage tank
- heat storage
- temperature liquefied
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 7
- 238000005338 heat storage Methods 0.000 claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 238000009877 rendering Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 40
- 239000003507 refrigerant Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 244000309466 calf Species 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F25J1/02—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
- F25J1/0251—Intermittent or alternating process, so-called batch process, e.g. "peak-shaving"
-
- 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
- F25J1/0025—Boil-off gases "BOG" from storages
-
- 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
- F25J1/0032—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 the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
- F25J1/0045—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 the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by vaporising a liquid return 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
- F25J1/02—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
- F25J1/0201—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 only internal refrigeration means, i.e. without external refrigeration
-
- 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
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/24—Processes or apparatus using other separation and/or other processing means using regenerators, cold accumulators or reversible heat exchangers
-
- 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
- F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
- F25J2230/08—Cold compressor, i.e. suction of the gas at cryogenic temperature and generally without afterstage-cooler
-
- 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
- F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
- F25J2230/30—Compression of the feed stream
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)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は低温液化ガス貯蔵設備で発生するガスを、低
温液化ガスの冷熱を利用して再液化する方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for reliquefying gas generated in a low-temperature liquefied gas storage facility by using the cold heat of the low-temperature liquefied gas.
（従来の技術）
低温液化ガスタンク内では、低温液化ガスをオーシャン
タンカーから受は入れる際に、また常時は外部からの入
熱にためにガスが発生する。このようなガスはタンクか
ら抽出し、再液化処理を行つて、元のタンクに戻してや
る必要がある。(Prior Art) Gas is generated in a low-temperature liquefied gas tank when receiving low-temperature liquefied gas from an ocean tanker, and also due to heat input from the outside. These gases must be extracted from the tank, reliquefied, and returned to the original tank.
このため、従来は第２図のように、貯蔵タンク２で発生
したガス８は、コンプレッサー１０で昇圧されてコンデ
ンサー１１で再液化された後、レシーバ−１２に蓄えら
れ膨張弁１３を介してタンクへ戻すという方法がとられ
ていた。この場合の冷却源は冷却水１４であり、ガスを
凝縮して昇温した冷却水は、クーリングタワー１５で冷
却された後、再び循環使用されていた。For this reason, conventionally, as shown in FIG. 2, the gas 8 generated in the storage tank 2 is pressurized by the compressor 10 and reliquefied by the condenser 11, and then stored in the receiver 12 and transferred to the tank via the expansion valve 13. The method was to return it to The cooling source in this case is the cooling water 14, and the cooling water whose temperature has been raised by condensing the gas is cooled in the cooling tower 15 and then recycled again.
一方、出荷液は海水を使用したヒーター５で常温近くま
で昇温され、タンクロリー車６やコースタルタンカーフ
等に出荷されていた。この出荷に際して海水に吸収され
る低温液化ガスの冷熱は、海等に捨てられ、有効に利用
されていないことが多かった。On the other hand, the liquid to be shipped is heated to near room temperature by a heater 5 using seawater, and then shipped to a tank truck 6, a coastal tank calf, or the like. The cold energy of the low-temperature liquefied gas that is absorbed into seawater during shipping is often discarded into the ocean and not utilized effectively.
特開昭５９−１８３６９には、従来有効に使用されてい
なかった低温液化ガスの冷熱を利用し、タンク内で発生
したガスを再液化する装置が開示しである。この場６低
温液化ガスの冷熱は、冷媒冷却器で熱交換され、冷媒に
取り込まれて蓄熱槽に蓄えられる。一方凝縮器へこの冷
熱を取り込んだ冷媒を送り、ガスと熱交換を行わせガス
を凝縮している。Japanese Patent Laid-Open No. 59-18369 discloses an apparatus for re-liquefying gas generated in a tank by utilizing the cold heat of low-temperature liquefied gas, which has not been effectively used in the past. At this point, the cold heat of the low-temperature liquefied gas is exchanged with the refrigerant cooler, taken into the refrigerant, and stored in the heat storage tank. On the other hand, the refrigerant that has absorbed this cold heat is sent to the condenser, where it exchanges heat with the gas and condenses the gas.
（発明が解決しようとする問題点）
本発明は、低温液化ガス貯蔵タンクで発生するガスを、
低温液化ガスの冷熱を利用して再液化処理をするにあた
り、設備費の安価な再液化処理方法を提供するものであ
る。(Problems to be Solved by the Invention) The present invention solves the problem by storing gas generated in a low-temperature liquefied gas storage tank.
The purpose of the present invention is to provide a reliquefaction treatment method that requires low equipment costs when performing reliquefaction treatment using the cold heat of low-temperature liquefied gas.
（問題点を解決するための手段）
前述の特開昭５９−１８３６９に開示しであるガスの再
液化装置は、蓄熱槽のほかに冷媒冷却器、ガスの凝縮器
およびそのそれぞれと蓄熱槽とを結ぶ冷媒循項用配管が
必要であり、設備が複雑で設備費が高くなるおそれがあ
る。そこで１本発明では、蓄熱液を貯蔵した蓄熱槽に低
温液化ガスの液出荷吊管を直接導くとともに、該蓄熱槽
に貯蔵タンク内で発生したガスを配管で直接導く方法を
採用した。(Means for Solving the Problems) The gas reliquefaction device disclosed in the above-mentioned Japanese Patent Application Laid-open No. 59-18369 includes a refrigerant cooler, a gas condenser, each of them, and a heat storage tank in addition to a heat storage tank. Refrigerant circulation piping is required to connect the equipment, which can lead to complex equipment and high equipment costs. Therefore, in the present invention, a method is adopted in which a suspension pipe for shipping low-temperature liquefied gas is directly led to a heat storage tank storing a heat storage liquid, and the gas generated in the storage tank is directly led to the heat storage tank via piping.
（作用）
蓄熱液を貯蔵した蓄熱槽に低温液化ガスの液出荷吊管を
直接導き、低温液化ガスの冷熱を蓄熱液に吸収して蓄熱
する。一方該蓄熱槽に貯蔵タンク内で発生したガスを配
管で導き、冷熱を吸収した蓄熱液と熱交換させて凝縮す
る。(Operation) A hanging pipe for shipping low-temperature liquefied gas is directly led to a heat storage tank storing a heat storage liquid, and the cold heat of the low-temperature liquefied gas is absorbed into the heat storage liquid and stored as heat. On the other hand, the gas generated in the storage tank is guided to the heat storage tank through piping, and is condensed by exchanging heat with the heat storage liquid that has absorbed cold heat.
（実施例） 本発明の実施例を第１図により説明する。(Example) An embodiment of the present invention will be explained with reference to FIG.
この実施例の低温液化ガスは、低温液化プロピレン３で
あり、マイナス４５℃で貯槽２に貯蔵されている。出荷
液は出荷液ポンプ４により、配管を通して蓄熱槽１６に
送られる。蓄熱槽内には冷熱吸収用熱交換器１７が設置
されており、低温液化プロピレンの冷熱は、ここで蓄熱
槽内の蓄熱液１８に吸収されるので、低温液化プロピレ
ンは所定の出荷温度近くまで昇温する。蓄熱液を水にし
て潜熱蓄熱をすることにすれば、蓄熱液の温度は０℃で
一定となり、蓄熱量の変動は氷の量で調整されることに
なる。The low-temperature liquefied gas in this example is low-temperature liquefied propylene 3, which is stored in a storage tank 2 at -45°C. The shipping liquid is sent to the heat storage tank 16 through piping by the shipping liquid pump 4. A cold heat absorption heat exchanger 17 is installed in the heat storage tank, and the cold heat of the low-temperature liquefied propylene is absorbed by the heat storage liquid 18 in the heat storage tank, so that the low-temperature liquefied propylene reaches a temperature close to the predetermined shipping temperature. Increase temperature. If water is used as the heat storage liquid to store latent heat, the temperature of the heat storage liquid will be constant at 0°C, and fluctuations in the amount of heat storage will be adjusted by the amount of ice.
この冷熱の蓄熱槽１６に、貯槽２で発生したガスを、配
管を通してコンプレッサー１０で送り込む、蓄熱槽内に
は、ガス凝縮用の熱交換器を設置してあり、ここでガス
は蓄熱液１８の保有する冷ａ−ｃ’ａｍされレシーバ−
１２に蓄えられる。そして膨張弁を介して、液化された
ガスは適宜貯槽２内にもどされる。Gas generated in the storage tank 2 is fed into the cold heat storage tank 16 by a compressor 10 through piping. A heat exchanger for gas condensation is installed in the heat storage tank, and here the gas is transferred to the heat storage liquid 18. Holds a cold AC'am receiver
It is stored in 12. The liquefied gas is then appropriately returned into the storage tank 2 via the expansion valve.
（発明の効果）
本発明の低温液化ガスの冷熱を利用したガスの再液化方
法では、蓄熱槽の内で蓄熱液と低温液化ガスの熱交換、
蓄熱液とガスの熱交換の双方が行えるようになっている
ので、設備がコンパクトになるとともに、設備費を安く
することができる。(Effect of the invention) In the gas reliquefaction method using the cold heat of low-temperature liquefied gas of the present invention, heat exchange between the heat storage liquid and low-temperature liquefied gas in the heat storage tank,
Since heat exchange can be performed between the heat storage liquid and the gas, the equipment can be made more compact and the equipment cost can be reduced.
第１図は本発明の一実施例のＬＰＧ基地のガス再液化系
統図、第２図は従来のＬＰＧ基地のガス再液化系統図で
ある。
１・・・オーシャンタンカー、２・・・低温液化ガス貯
槽、３・・・低温液化ガス、４・・・出荷液ポンプ、５
・・・ヒーター、６・・・タンクローリ−車、７・・・
コースタルタンカー、８・・・ガス層、９ブロワ−１１
０…コンプレツサー、１１・・・コンデンサー、１２・
・・レシーバ−１１３・・・膨張弁、１４・・・冷却水
１５・・・クーリングタワー、１６・・・蓄熱槽、１７
・・・冷熱吸収用熱交換器、１８・・・蓄熱液１９・・
・ガス凝縮用熱交換器。FIG. 1 is a gas reliquefaction system diagram of an LPG terminal according to an embodiment of the present invention, and FIG. 2 is a gas reliquefaction system diagram of a conventional LPG terminal. 1... Ocean tanker, 2... Low temperature liquefied gas storage tank, 3... Low temperature liquefied gas, 4... Shipping liquid pump, 5
...Heater, 6...Tank truck, 7...
Coastal tanker, 8... gas layer, 9 blower-11
0...Compressor, 11...Condenser, 12.
...Receiver-113...Expansion valve, 14...Cooling water 15...Cooling tower, 16...Heat storage tank, 17
...Cold heat absorption heat exchanger, 18...Heat storage liquid 19...
・Heat exchanger for gas condensation.
Claims (1)
し、低温液化ガスを直接蓄熱液を貯蔵した蓄熱槽で熱交
換して蓄熱するとともに、この蓄熱槽に発生ガスを導き
、蓄熱された冷熱で該ガスを再液化する方法。When reliquefying gas using the cold heat of low-temperature liquefied gas, the low-temperature liquefied gas is directly heat-exchanged and stored in a heat storage tank that stores a heat storage liquid, and the generated gas is guided to this heat storage tank and the heat is stored. A method of reliquefying the gas using cold heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61181923A JPS6338799A (en) | 1986-08-04 | 1986-08-04 | Method for reliquefying gas using cryogenic heat of low temperature liquefied gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61181923A JPS6338799A (en) | 1986-08-04 | 1986-08-04 | Method for reliquefying gas using cryogenic heat of low temperature liquefied gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6338799A true JPS6338799A (en) | 1988-02-19 |
Family
ID=16109267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61181923A Pending JPS6338799A (en) | 1986-08-04 | 1986-08-04 | Method for reliquefying gas using cryogenic heat of low temperature liquefied gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6338799A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03236588A (en) * | 1990-02-13 | 1991-10-22 | Osaka Gas Co Ltd | Method and device for processing boil-off gas of lng |
| JP2004068892A (en) * | 2002-08-05 | 2004-03-04 | Mitsui Eng & Shipbuild Co Ltd | Boil-off gas processing method |
| CN102705696A (en) * | 2012-05-29 | 2012-10-03 | 张家港市科华化工装备制造有限公司 | Interlayer-type low-temperature storage tank |
| FR3065065A1 (en) * | 2017-04-06 | 2018-10-12 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | METHOD FOR CONTROLLING THE TEMPERATURE OF FLOW FLOW |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4853316A (en) * | 1971-11-05 | 1973-07-26 |
-
1986
- 1986-08-04 JP JP61181923A patent/JPS6338799A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4853316A (en) * | 1971-11-05 | 1973-07-26 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03236588A (en) * | 1990-02-13 | 1991-10-22 | Osaka Gas Co Ltd | Method and device for processing boil-off gas of lng |
| JP2004068892A (en) * | 2002-08-05 | 2004-03-04 | Mitsui Eng & Shipbuild Co Ltd | Boil-off gas processing method |
| CN102705696A (en) * | 2012-05-29 | 2012-10-03 | 张家港市科华化工装备制造有限公司 | Interlayer-type low-temperature storage tank |
| FR3065065A1 (en) * | 2017-04-06 | 2018-10-12 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | METHOD FOR CONTROLLING THE TEMPERATURE OF FLOW FLOW |
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