JPS6319500A - Boil off gas storing method for low temperature liquefied gas - Google Patents
Boil off gas storing method for low temperature liquefied gasInfo
- Publication number
- JPS6319500A JPS6319500A JP16447686A JP16447686A JPS6319500A JP S6319500 A JPS6319500 A JP S6319500A JP 16447686 A JP16447686 A JP 16447686A JP 16447686 A JP16447686 A JP 16447686A JP S6319500 A JPS6319500 A JP S6319500A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- boil
- adsorbent
- container
- 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 abstract description 10
- 239000003463 adsorbent Substances 0.000 claims abstract description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 5
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000010457 zeolite Substances 0.000 claims abstract description 5
- 238000003860 storage Methods 0.000 claims description 14
- 238000001816 cooling Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract 2
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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
- F17C11/00—Use of gas-solvents or gas-sorbents in vessels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (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〕
本発明は、例えばＬ Ｎ ＧＳＬ Ｐ Ｃ−Ｌ Ｎｚな
どの低温液化ガスの貯蔵タンクにおいて発生するボイル
オフガスを、貯蔵タンクから取出して容器に貯蔵し、必
要に応じて容器からボイルオフガスを取出せるようにす
るための、ボイルオフガスの貯蔵方法に関する。Detailed Description of the Invention [Industrial Application Field] The present invention is a method for extracting boil-off gas generated in a storage tank of low-temperature liquefied gas such as LNGSL PCL Nz from the storage tank and storing it in a container. The present invention also relates to a method for storing boil-off gas so that the boil-off gas can be taken out from a container as needed.
従来、第２図に示すように、低温液化ガスの貯蔵タンク
（５）から超低温用コンプレッサー（１３）によりガス
ホルダー（１４）にボイルオフガスを圧縮供給し、ガス
ホルダー（１４）でボイルオフガスを高圧貯蔵し、必要
に応じて、ガスホルダー（１４）内のボイルオフガスを
回収路（１５）のバルブ（１６）を開いて取出せるよう
にしていた。Conventionally, as shown in Fig. 2, boil-off gas is compressed and supplied from a low-temperature liquefied gas storage tank (5) to a gas holder (14) by an ultra-low-temperature compressor (13), and the boil-off gas is compressed at high pressure in the gas holder (14). The boil-off gas in the gas holder (14) could be taken out by opening the valve (16) of the recovery path (15) as needed.
しかし、例えばＬＮＧのボイルオフガスは一１５８℃程
度というように、低温液化ガスのポイルオフガスは極低
温であるために、ガスホルダー（１４）を極低温で高圧
に耐えるもので、しかもかなり大型にしなければならず
、ガスホルダー （１４）が極めて高くなる欠点があっ
た。また、超低温用コンプレッサー（１３）は、極低温
に耐える仕様にしなければならず、極めて高価になり、
その上、コンプレッサー（１３）の動力経費が相当高く
なる欠点があった。However, since the boil-off gas of low-temperature liquefied gas has an extremely low temperature, for example, boil-off gas of LNG has a temperature of about -158°C, the gas holder (14) must be made to withstand high pressure at extremely low temperatures and be quite large. However, there was a drawback that the gas holder (14) was extremely tall. In addition, the ultra-low temperature compressor (13) must be designed to withstand extremely low temperatures, making it extremely expensive.
Moreover, there was a drawback that the power cost of the compressor (13) was considerably high.
本発明の目的は、貯蔵タンクから取出したボイルオフガ
スの容器を低圧型で小型にでき、しかも、容器にガスを
供給するための超低温用コンプレッサーを不要にでき、
全体として、ボイルオフガスの貯蔵に要する設備経費及
び運転経費を大巾に安くできるようにする点にある。The object of the present invention is to make the container for boil-off gas taken out from the storage tank small and low-pressure, and to eliminate the need for an ultra-low temperature compressor for supplying gas to the container.
Overall, the objective is to significantly reduce the equipment and operating costs required for storing boil-off gas.
本発明の特徴手段は、容器内に収容された吸着剤を冷却
して、ボイルオフガスを吸着剤により吸着させ、そのボ
イルオフガスを吸着した吸着剤の加熱によって、吸着さ
れたボイルオフガスを放出できる状態にすることにあり
、その作用効果は次の通りである。The characteristic means of the present invention is to cool an adsorbent housed in a container so that boil-off gas is adsorbed by the adsorbent, and to release the adsorbed boil-off gas by heating the adsorbent that has adsorbed the boil-off gas. Its functions and effects are as follows.
つまり、例えばＬＮＧのボイルオフガス（Ｃ１１，）を
活性炭やゼオライトから成る吸着剤で吸着させると、１
気圧、１５℃に慰けるＣ？＋４の吸着量は約１０ｆであ
り、また、吸着剤１ ｋｇの体積は約５２であるから、
１Ｍの容器に吸着剤を充填したとすると、ｌＱｍのＣ）
１４を１気圧、１５°Ｃで貯蔵できる。In other words, for example, when LNG boil-off gas (C11,) is adsorbed with an adsorbent made of activated carbon or zeolite, 1
Atmospheric pressure, C comforting to 15℃? The adsorption amount of +4 is about 10f, and the volume of 1 kg of adsorbent is about 52, so
If a 1M container is filled with adsorbent, lQm of C)
14 can be stored at 1 atm and 15°C.
他方、従来のガスホルダーの容積を１Ｍにして、−１５
８℃のＣ１（４を１気圧でガスホルダーに収容し、その
後１５℃に昇温すると、ガスホルダーの内圧は約２．５
気圧となり、本発明に対して圧力で約２．５倍にかつＣ
Ｈ，貯蔵量で約１７１０になる。On the other hand, if the volume of the conventional gas holder is set to 1M, -15
When C1 (4) at 8℃ is placed in a gas holder at 1 atm and then heated to 15℃, the internal pressure of the gas holder is approximately 2.5℃.
The pressure is about 2.5 times that of the present invention, and the C
H, the storage amount is about 1710.
したがって、本発明によれば従来技術よりもボイルオフ
ガスの貯蔵量が多い割には容器の必要耐圧強度を大巾に
低（でき、かつ、容器を大巾に小型にできる。Therefore, according to the present invention, although the amount of boil-off gas stored is larger than that of the prior art, the required pressure strength of the container can be significantly lowered, and the container can be made significantly smaller.
また、上記吸着剤１ ｋｇ当たりの１気圧、−１５８℃
におけるＣＨ，の吸着量は約３００！であり、１気圧、
１５℃における吸着量は約５０！であるから、１気圧、
−１５８℃で吸着剤１ ｋｇにＣ１１，を吸着させて、
１５℃に加熱して吸着されたＣＨ４を放出すれば、約２
５０７！のＣＨ４を放出できる。Also, 1 atm per 1 kg of the above adsorbent, -158°C
The adsorption amount of CH, in is about 300! and 1 atm,
The amount of adsorption at 15℃ is about 50! Therefore, 1 atm,
Adsorb C11 on 1 kg of adsorbent at -158℃,
If the adsorbed CH4 is released by heating to 15℃, approximately 2
507! of CH4 can be released.
したがって、吸着剤を冷却すれば、貯蔵タンクから容器
にコンプレッサー無しでボイルオフガスを供給でき、か
つ、吸着剤を加熱すれば、容器から十分量のボイルオフ
ガスを供給でき、必要に応じて圧送機無しでも供給でき
る。Therefore, if the adsorbent is cooled, boil-off gas can be supplied from the storage tank to the container without a compressor, and if the adsorbent is heated, a sufficient amount of boil-off gas can be supplied from the container without the need for a compressor. But we can supply it.
その結果、容器を低圧型で小型の安価なもので済ますと
共に、容器にボイルオフガスを供給するための超低温用
コンプレッサー及びその動力経費を無くせるようになり
、設備経費及び運転経費のいずれにおいても極めて有利
に、低温液化ガスのボイルオフガスを貯蔵できるように
なった。As a result, the container can be made into a low-pressure, small, and inexpensive container, and the cost of a cryogenic compressor and its power to supply boil-off gas to the container can be eliminated, resulting in extremely low equipment and operating costs. Advantageously, boil-off gas of low temperature liquefied gas can now be stored.
次に実施例を示す。 Next, examples will be shown.
先ず、第１図により使用する設備を説明する。First, the equipment used will be explained with reference to FIG.
断熱壁で形成した容器（１）内に、金網やパンチングメ
タルなどの通気性受具（２）の上方に位置させて、活性
炭、ゼオライト、両者の混合物や合成物などから成る吸
着剤（３）を内蔵させ、熱運搬媒を通すための多数のチ
ューブ（４）を吸着剤充填層内に並設しである。An adsorbent (3) made of activated carbon, zeolite, a mixture or composite of the two, etc. is placed in a container (1) formed with an insulating wall and above a breathable support (2) such as a wire mesh or punched metal. A large number of tubes (4) for passing the heat transfer medium are arranged in parallel inside the adsorbent packed bed.
低温液化ガスの貯蔵タンク（５）の上部に、容器（１）
内で受具（２）の下方に形成したガス分配室（６）を開
閉弁（Ｖ、）付のボイルオフガス取出用管路（７）で接
続し、容器（１）向上部に開閉弁（ｖ２）付のボイルオ
フガス回収用管路（８）を接続しである。At the top of the low temperature liquefied gas storage tank (5), there is a container (1)
A gas distribution chamber (6) formed below the receiver (2) is connected with a boil-off gas extraction pipe (7) equipped with an on-off valve (V), and an on-off valve (V,) is connected to the upper part of the container (1). v2) is connected to the boil-off gas recovery pipe (8).
熱源流体用管路（９）内の高温排ガスや温廃水などの熱
源流体によってＮ２やフロンなどの熱運搬媒を加熱する
加熱器（１０）を設け、作動停止切換操作自在な送風機
（１１）と開閉弁（ｖ３）を備えた循環路（１２）によ
ってチューブ（４）の全てと加熱器（１０）を接続しで
ある。A heater (10) is provided that heats a heat transfer medium such as N2 or Freon using a heat source fluid such as high-temperature exhaust gas or hot waste water in a heat source fluid pipe (9), and a blower (11) that can be switched on and off. All of the tubes (4) and the heater (10) are connected by a circulation path (12) equipped with an on-off valve (v3).
次に上記設備による低温液化ガスのボイルオフガスの貯
蔵方法を説明する。Next, a method for storing boil-off gas of low-temperature liquefied gas using the above equipment will be explained.
（１１送風機（１１）を停止し、開閉弁（Ｖｚ） 、（
Ｖｚ）を全閉にした状態で、開閉弁（ｖｌ）を少し開い
て、貯蔵タンク（５）内の極低温（−１５８℃）のボイ
ルオフガスを容器（１）内に流し、吸着剤（３）を冷却
する。(11 Stop the blower (11), open/close valve (Vz), (
Vz) is fully closed, the on-off valve (vl) is slightly opened to flow the extremely low temperature (-158°C) boil-off gas in the storage tank (5) into the container (1), and the adsorbent (3) is completely closed. ) to cool down.
（２）吸着剤（３）が十分に冷却された状態で、開閉弁
（Ｖ、）を適度の開度に調整し、ボイルオフガスを貯蔵
タンク（５）から容器（１）に送って吸着剤（３）に吸
着させ、吸着量が十分になればバルブ（ｖｌ）を全閉に
する。(2) When the adsorbent (3) is sufficiently cooled, adjust the on-off valve (V,) to an appropriate degree of opening, and send the boil-off gas from the storage tank (5) to the container (1) to absorb the adsorbent. (3), and when the amount of adsorption is sufficient, fully close the valve (vl).
（３）吸着させたボイルオフガスが必要になれば、送風
機（１１）を作動させ、開閉弁（ｖｚ） 、 （Ｖ３）
を開き、加熱器（１０）で昇温した熱運搬媒をチューブ
（４）の全てに供給し、チューブ（４）で吸着剤（３）
を加熱して、吸着されたボイルオフガスを放出させ、管
路（８）から必要個所にボイルオフガスを送る。(3) When the adsorbed boil-off gas is needed, the blower (11) is operated and the on-off valves (vz) and (V3) are activated.
is opened, the heat transfer medium heated by the heater (10) is supplied to all of the tubes (4), and the adsorbent (3) is heated by the tube (4).
is heated to release the adsorbed boil-off gas, and the boil-off gas is sent to the required location through the pipe (8).
（４）容器（１）内の圧力が規定圧力以下になると、開
閉弁（ｖｌ）を開いて、貯蔵タンク（５）内のボイルオ
フガスを管路（８）に送り、ボイルオフガス供給を継続
する。(4) When the pressure inside the container (1) falls below the specified pressure, open the on-off valve (vl) and send the boil-off gas in the storage tank (5) to the pipe (8) to continue supplying the boil-off gas. .
次に別実施例を説明する。 Next, another embodiment will be described.
吸着剤（３）としては、活性炭とゼオライトの少な（と
も一方を使用することが経済性に優れて一般的であるが
、その他ボイルオフガスの種類に応じて適当なものを選
択できる。As the adsorbent (3), it is common to use activated carbon or zeolite (one of which is economically efficient), but other suitable materials can be selected depending on the type of boil-off gas.
吸着剤（３）を冷却するに、例えば熱運搬媒を適当な冷
却器で冷却して、チューブ（４）で吸着剤（３）を冷却
する等、その他各種の冷却手段を利用できる。Various other cooling means can be used to cool the adsorbent (3), such as cooling the adsorbent (3) with a tube (4) by cooling the heat transfer medium in a suitable cooler.
吸着剤（３）を加熱するに、例えば燃焼式や電熱式の加
熱器を利用する等、その他各種の加熱手段を利用できる
。To heat the adsorbent (3), various other heating means can be used, such as a combustion type or electric heating type heater.
第１図は本発明に使用する設備の概念図であり、第２図
は従来の設備を示す概念図である。
（１）・・・・・・容器、（３）・・・・・・吸着剤、
（５）・・・・・・貯蔵タンク。FIG. 1 is a conceptual diagram of equipment used in the present invention, and FIG. 2 is a conceptual diagram showing conventional equipment. (1)... Container, (3)... Adsorbent,
(5)...Storage tank.
Claims (4)
ルオフガスを貯蔵する方法であって、容器（１）内に収
容された吸着剤（３）を冷却して、ボイルオフガスを吸
着剤（３）により吸着させ、そのボイルオフガスを吸着
した吸着剤（３）の加熱によって、吸着されたボイルオ
フガスを放出できる状態にする低温液化ガスのボイルオ
フガス貯蔵方法。(1) A method for storing boil-off gas generated in a storage tank (5) for low-temperature liquefied gas, in which an adsorbent (3) housed in a container (1) is cooled and the boil-off gas is transferred to the adsorbent (3). A boil-off gas storage method for low-temperature liquefied gas, in which the boil-off gas is adsorbed by (3), and the adsorbent (3) adsorbing the boil-off gas is heated to make the adsorbed boil-off gas ready for release.
なくとも一方を使用する特許請求の範囲第１項に記載の
方法。(2) The method according to claim 1, wherein at least one of activated carbon and zeolite is used as the adsorbent (3).
からの低温のボイルオフガスで行う特許請求の範囲第１
項又は第２項に記載の方法。(3) The adsorbent (3) is cooled in the storage tank (5).
Claim 1
or the method described in paragraph 2.
媒で行う特許請求の範囲第（１）項又は第（２）項に記
載の方法。(4) The method according to claim (1) or (2), wherein the adsorbent (3) is cooled and heated using the same heat transfer medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16447686A JPS6319500A (en) | 1986-07-11 | 1986-07-11 | Boil off gas storing method for low temperature liquefied gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16447686A JPS6319500A (en) | 1986-07-11 | 1986-07-11 | Boil off gas storing method for low temperature liquefied gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6319500A true JPS6319500A (en) | 1988-01-27 |
Family
ID=15793901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16447686A Pending JPS6319500A (en) | 1986-07-11 | 1986-07-11 | Boil off gas storing method for low temperature liquefied gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6319500A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0874189A1 (en) * | 1997-04-25 | 1998-10-28 | Tokyo Gas Co., Ltd. | Method for utilization of material comprising a hydrate-like product of gases and tank therefor |
| EP0875714A1 (en) * | 1997-04-28 | 1998-11-04 | Tokyo Gas Co., Ltd. | Method and apparatus for treating bog in a low temperature liquid storage tank |
| JP2006242350A (en) * | 2005-03-04 | 2006-09-14 | Tokyo Gas Co Ltd | Boil-off gas treating method and treating device |
| JP2006242141A (en) * | 2005-03-04 | 2006-09-14 | Tokyo Gas Co Ltd | Gas compressor and gas pressure raising method |
| JP2006349133A (en) * | 2005-06-20 | 2006-12-28 | Mitsubishi Heavy Ind Ltd | Low temperature liquefied gas storing device, and power generating device and movable body having the same |
| JP2017036709A (en) * | 2015-08-11 | 2017-02-16 | エア・ウォーター株式会社 | Engine fuel supply method and engine fuel supply device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS622098A (en) * | 1985-06-28 | 1987-01-08 | Tokyo Gas Co Ltd | Thermal shock storing of liquefied gas for peak shaving of gasification |
-
1986
- 1986-07-11 JP JP16447686A patent/JPS6319500A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS622098A (en) * | 1985-06-28 | 1987-01-08 | Tokyo Gas Co Ltd | Thermal shock storing of liquefied gas for peak shaving of gasification |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0874189A1 (en) * | 1997-04-25 | 1998-10-28 | Tokyo Gas Co., Ltd. | Method for utilization of material comprising a hydrate-like product of gases and tank therefor |
| EP0875714A1 (en) * | 1997-04-28 | 1998-11-04 | Tokyo Gas Co., Ltd. | Method and apparatus for treating bog in a low temperature liquid storage tank |
| JP2006242350A (en) * | 2005-03-04 | 2006-09-14 | Tokyo Gas Co Ltd | Boil-off gas treating method and treating device |
| JP2006242141A (en) * | 2005-03-04 | 2006-09-14 | Tokyo Gas Co Ltd | Gas compressor and gas pressure raising method |
| JP4675648B2 (en) * | 2005-03-04 | 2011-04-27 | 東京瓦斯株式会社 | Gas compressor and gas pressure increasing method |
| JP2006349133A (en) * | 2005-06-20 | 2006-12-28 | Mitsubishi Heavy Ind Ltd | Low temperature liquefied gas storing device, and power generating device and movable body having the same |
| JP2017036709A (en) * | 2015-08-11 | 2017-02-16 | エア・ウォーター株式会社 | Engine fuel supply method and engine fuel supply device |
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