JPS6116991A - Process for producing compressed natural gas from liquefied natural gas - Google Patents

Process for producing compressed natural gas from liquefied natural gas

Info

Publication number
JPS6116991A
JPS6116991A JP59136895A JP13689584A JPS6116991A JP S6116991 A JPS6116991 A JP S6116991A JP 59136895 A JP59136895 A JP 59136895A JP 13689584 A JP13689584 A JP 13689584A JP S6116991 A JPS6116991 A JP S6116991A
Authority
JP
Japan
Prior art keywords
natural gas
lng
pressure
gas
heat
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
Application number
JP59136895A
Other languages
Japanese (ja)
Inventor
Kenichi Fukatsu
深津　憲一
Akio Mori
昭男 森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kawasaki Heavy Industries Ltd
Kawasaki Motors Ltd
Original Assignee
Kawasaki Heavy Industries Ltd
Kawasaki Jukogyo KK
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.)
Filing date
Publication date
Application filed by Kawasaki Heavy Industries Ltd, Kawasaki Jukogyo KK filed Critical Kawasaki Heavy Industries Ltd
Priority to JP59136895A priority Critical patent/JPS6116991A/en
Publication of JPS6116991A publication Critical patent/JPS6116991A/en
Pending legal-status Critical Current

Links

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
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • 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
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
    • 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
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0135—Pumps
    • 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
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0302—Heat exchange with the fluid by heating
    • 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
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0367—Localisation of heat exchange
    • F17C2227/0388—Localisation of heat exchange separate
    • F17C2227/0393—Localisation of heat exchange separate using a vaporiser

Abstract

PURPOSE:To obtain a compressed natural gas having arbitrary pressure, economically, saving the power consumption, by compressing liquefied natural gas, pressing into a pressure vessel, and heating the gas to effect the evaporation and expansion of the gas in the pressure vessel. CONSTITUTION:A liquefied natural gas (LNG) pressurized to a definite pressure with a compression pump 4 is introduced through a heat-insulated pipe 6 into an LNG dispenser 7, and pressed into a compressed natural gas (CNG) tank 12. The LNG is heated by the ambient heat (atmospheric heat) or by a forcive heating means, and evaporated and expanded in the vessel to obtain a CNG having a desired pressure.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、液化天然ガス（ＬＮＧ）より圧縮天然ガス（
ｏＮｅ）を製造する方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention is directed to the use of compressed natural gas (
oNe).

〔発明の背景〕[Background of the invention]

天然ガスを通常ｔＳＯ〜−〇〇気圧程度に圧縮した圧縮
天然ガス（以下ＯＮＧと云う）を圧力タンクに保持し、
それを燃料として駆動する自動車、およびその他の機関
が無公害性、安全性およびガソリン、ＬＰＧなどの低燃
料に比し経済性を有する点から、欧米をはじめ他地域諸
国において使用されており、増加の傾向がある。我が国
においても、上記理由で自動車およびその他の機関用と
してガソリン、ＤＩＰ（）等の代替燃料として、あるい
はパイプライン供給による都市ガスの代替としてａ’ｍ
ａの利用検討が各方面で行われている。しかし、諸外国
に比べ、天然ガス資源の少ない我が国では、天然ガスは
ＬＩＮ（）　（液化天然ガス）の形で海外より導入され
ているのが実情である。ＤＩＧは大略ｌ気圧、−／Ａ、
２ｃの液体状態でＩ＋ＮＧ専用タンカーにより導入され
、一般的には海水などで常温域まで加熱され、天然ガス
として主に火力発電用燃料、および都市ガス原料として
広く利用されている。天然ガスの物性として、その体積
は液体状態から気体状態に変化する場合、約ｔＯＱ倍に
成るので、天然ガスの大容量の輸送形態としては液体状
態で行われるのが通常である。しかし天然ガスを液体状
態で保持するためには、大気圧下で一１６コＣの極低温
状態に保つ必要がある。Compressed natural gas (hereinafter referred to as ONG), which is obtained by compressing natural gas to about tSO ~ -〇〇atmosphere, is held in a pressure tank,
Automobiles and other organizations that use it as fuel are being used in Europe, the United States, and other countries because they are non-polluting, safe, and more economical than low-cost fuels such as gasoline and LPG, and their use is increasing. There is a tendency to In Japan, for the above reasons, a'm is used as an alternative fuel such as gasoline and DIP () for automobiles and other engines, or as an alternative to city gas by pipeline supply.
Consideration of the use of a is being conducted in various fields. However, compared to other countries, Japan has fewer natural gas resources, and the reality is that natural gas is introduced from overseas in the form of LIN() (liquefied natural gas). DIG is approximately 1 atmosphere, -/A,
It is introduced in an I+NG tanker in a liquid state of 2c, and is generally heated to room temperature with seawater, etc., and is widely used as natural gas, mainly as a fuel for thermal power generation, and as a raw material for city gas. As a physical property of natural gas, when its volume changes from a liquid state to a gas state, its volume increases by approximately tOQ times, so natural gas is normally transported in a liquid state in a large capacity. However, in order to maintain natural gas in a liquid state, it must be kept at a cryogenic temperature of 116 degrees Celsius under atmospheric pressure.

このためＬＮＧ輸送のため、タンカーあるいは貯蔵用タ
ンクは、この極低温に耐えうる材料を用いる必要があり
、通常アルミニューム、ステンレス崗、Ｍｉ鋼などが用
いられている。Therefore, in order to transport LNG, tankers or storage tanks must be made of materials that can withstand this extremely low temperature, and aluminum, stainless steel, Mi steel, etc. are usually used.

一方、冒頭に記述した如く、天然ガスを液化して輸送、
貯蔵する以外に、ＯＮＧとしての輸送。On the other hand, as mentioned at the beginning, natural gas is liquefied and transported.
In addition to storage, transportation as ONG.

貯蔵が考えられる。ＯＮＧは常温域での天然ガスを用い
るので、輸送、貯蔵のための容器は特にＬｌｆｆＧに必
要とされる極低温用材料を用いる必要はないが、１１０
−一〇〇気圧に耐え得る構造１強度が要求される。した
がってＯＮＧは、大容量の輸送、貯蔵には不向きである
が、既述の如き自動車およびその他の機関用の燃料、あ
るいはガス供給のためのパイプライン敷設が困難な中小
規模集合住宅用ガス供給、災害時における暫定的なガス
供給などがａＮａの用途として有望視されている。Storage is possible. Since ONG uses natural gas at room temperature, containers for transportation and storage do not need to be made of cryogenic materials that are required for LlffG.
-Structural strength that can withstand 100 atmospheres is required. Therefore, ONG is not suitable for large-capacity transportation and storage, but it can be used to supply fuel for automobiles and other engines as mentioned above, or gas supply for small and medium-sized housing complexes where it is difficult to construct gas supply pipelines. Promising applications for aNa include provisional gas supply during disasters.

我が国におけるＩＩＮＧの今後の導入計画は、昭和６ｊ
年に３６Ｓθ万トン／年を予定されており、電力用又は
都市ガス用以外での天然ガスの用途拡大検討が近年とみ
に行われており、ＯＮＧの用途開発もその一環として積
極的に行われている。The future introduction plan for IING in Japan is from 1986.
36 million tons of natural gas is expected to be produced in 2019, and in recent years, consideration has been given to expanding the use of natural gas for purposes other than electricity or city gas, and the development of uses for ONG is being actively undertaken as part of this. There is.

〔従来の技術〕[Conventional technology]

現在、０１ｉＧの製造方法としては、圧縮機により天然
ガスをノｊＯ〜、２００気圧程度に圧縮し、それを耐圧
容器に充填するものである。しかし、ガス体の圧縮であ
るため、圧縮機の所要動力は可成り大きく、その動力費
は充填天然ガス価格の１０−程度をしめしているのが実
情である。Currently, the method for manufacturing 01iG is to compress natural gas to about 200 atmospheres using a compressor, and then fill it into a pressure container. However, since the compressor compresses a gas body, the power required for the compressor is quite large, and the actual power cost is about 10 times the price of filled natural gas.

〔発明の目的〕[Purpose of the invention]

本発明は、このような実情に鑑みなされたもので、簡単
な而も合理的手段、詳しくは、従来のＯＮＧ製造方法に
みられる０ＨＣｋ製造時の圧縮のための多大の圧縮機動
力を削減するために、ａｙａ原料にＬＮＧを直接用いん
とするものである。即ち、ＬＮＧをポンプなどの昇圧手
段により所定圧（４ｔ） まで昇圧し、この昇圧されたＬＮＧを圧力容器内に圧入
し、この圧力容器を加熱することにより内部のＬＮＧを
気化、膨張させて０Ｎ（）が得られる経済的方法を提供
せんとするものである。The present invention has been made in view of these circumstances, and provides a simple yet rational means, specifically, to reduce the large amount of compressor power required for compression during 0HCk production, which is seen in the conventional ONG production method. Therefore, LNG will be used directly as the aya raw material. That is, LNG is pressurized to a predetermined pressure (4 t) using a pressure increasing means such as a pump, this pressurized LNG is pressurized into a pressure vessel, and by heating this pressure vessel, the LNG inside is vaporized and expanded to 0N. The purpose is to provide an economical method for obtaining ().

〔実施例の説明〕[Explanation of Examples]

図面について本発明実施例を説明する。この実施例の０
３ｉＧ製造方法は、昇圧されたＴＪＮＧを直接圧力容器
内に注入し、この圧力容器を大気熱、ある〜１は他の熱
源により加熱し、ＬＮＧを気化。Embodiments of the present invention will be described with reference to the drawings. 0 in this example
In the 3iG production method, pressurized TJNG is directly injected into a pressure vessel, and this pressure vessel is heated by atmospheric heat or another heat source to vaporize the LNG.

膨張させ、所定圧力のＯＮＧを製造せんとするものであ
る。The purpose is to expand and produce ONG at a predetermined pressure.

（１）は断熱手段を施したＬｌｉＧの貯蔵タンクで、該
貯蔵タンク（１）は、バルブ（２）を設けた断熱パイプ
（３）を介してＬｌｉＧ昇圧用ポンプ（４）に接続する
。該ＬＨＧ昇圧用ポンプ（４）は、パルプ（５）を途中
に有する断熱パイプ（６）を介してＬＮＧ分配器（７）
に接続されている。そして、ＬＮＧ昇圧用ポンプ（４）
により所定圧力に昇圧された］、ＩＮＧは、断熱パイプ
（６）内を移送され、ＬＮＧ分配器（７）に入る。該Ｌ
Ｎ（）分配器（７）は、流量計（９）、バルブａＩを介
し圧力＃ａυを有する圧力容器（ａｍａタンク）α乃に
接続されており、バルブαｌを開にすることにより、所
定圧力に昇圧されたＬＮＧがＯＮＧタンクａり内に圧入
される。（８）は圧力計である。(1) is an LliG storage tank provided with heat insulation means, and the storage tank (1) is connected to an LliG boost pump (4) via a heat insulation pipe (3) provided with a valve (2). The LHG boosting pump (4) is connected to an LNG distributor (7) via an insulated pipe (6) having a pulp (5) in the middle.
It is connected to the. And LNG boosting pump (4)
[increased pressure to a predetermined pressure], ING is transferred in an insulated pipe (6) and enters an LNG distributor (7). The L
The N() distributor (7) is connected to a pressure vessel (ama tank) α with a pressure #aυ via a flow meter (9) and a valve aI, and by opening the valve αl, a predetermined pressure is set. The pressurized LNG is press-fitted into the ONG tank a. (8) is a pressure gauge.

ＯＮＧタンクα渇内に圧入されたＩＩＮＧは、自然加熱
（大気熱）あるいは強制加熱手段に加熱され、気化、膨
張し、所定圧力の０１ｉＧが得られる。また多数のＯＮ
Ｇタンクα冬に同時にＬＮＧを充填する必要のある場合
は、バルブα３を有する断熱を施された分岐パイプ（１
４）を用い、複数系列の装置とすることも可能である。The IING pressurized into the ONG tank α is heated by natural heating (atmospheric heat) or forced heating means, vaporizes and expands, and a predetermined pressure of 01iG is obtained. Also many ON
G tank α If it is necessary to simultaneously fill LNG in winter, use an insulated branch pipe (1
4), it is also possible to create multiple series of devices.

〔効　果〕 このように本発明によれば次のような効果があるＯ 本発明は、従来方式において行われている高段高圧縮形
の圧縮機によりＯＮＧを製造するものではなく、圧力容
器内にポンプなどで昇圧されたＬＮＧを圧入し、この圧
力容器を大気熱あるいは廃熱などにより加熱し、該容器
内にあるＬＮＧを気化、膨張し、所定圧力のＯＮＧを製
造せんとするものである。即ち、本発明によれば、従来
から天然ガスの高圧縮化に必要とされた圧縮機関連設備
が不要になるのみならず、圧縮に要する多大の動力も削
減でき、代替燃料として経済性のあるＯＮＱの製造が可
能となる。[Effects] As described above, the present invention has the following effects.The present invention does not manufacture ONG using a high-stage, high-compression type compressor, which is carried out in the conventional method, but instead manufactures ONG using a pressure vessel. Pressurized LNG is injected into the container using a pump, etc., and this pressure container is heated by atmospheric heat or waste heat, and the LNG in the container is vaporized and expanded to produce ONG at a predetermined pressure. be. In other words, the present invention not only eliminates the need for compressor-related equipment conventionally required for high compression of natural gas, but also reduces the amount of power required for compression, making it an economical alternative fuel. It becomes possible to manufacture ONQ.

因に、圧力容器内においてＬＮＧを気化させ、常温まで
昇温する熱量は約２００日／ｋｙと小さく、これらは大
気熱あるいはエンジンなどの排気ガス熱、工場廃熱など
で充分賄うことが可能である。Incidentally, the amount of heat required to vaporize LNG and raise it to room temperature in a pressure vessel is small at approximately 200 days/ky, and this can be adequately covered by atmospheric heat, engine exhaust gas heat, factory waste heat, etc. be.

以上のように本発明は、従来方法の不利な点を充分補い
うる画期的なものである。As described above, the present invention is an epoch-making method that can sufficiently compensate for the disadvantages of conventional methods.

【図面の簡単な説明】[Brief explanation of the drawing]

図は本発明方法を実施するに当り使用する装置の説明図
である。 （り・・・ＬＮＧ貯蔵タンク、（２）・・・バルブ、（
３）・・・断熱ハ（）、（４）・・・ＩＩＮＧ昇圧用ポ
ンプ、（５）・・・バルブ。 （６）・・・断熱パイプ、（７）・・・ＬＮＧ分配器、
（８）・・・圧力計。 （９）・・・流量計、αＯ・・・バルブ、Ｑｌ）・・・
圧力計、　６３・・・ＯＨＧタンク、　Ｑ３１・・・バ
ルブ、α荀・・・分岐パイプ。 （Ｉｒ）The figure is an explanatory diagram of the apparatus used to carry out the method of the present invention. (ri... LNG storage tank, (2)... valve, (
3)...Insulation c(), (4)...IING boosting pump, (5)...Valve. (6)...Insulated pipe, (7)...LNG distributor,
(8)...Pressure gauge. (9)...Flowmeter, αO...Valve, Ql)...
Pressure gauge, 63...OHG tank, Q31...valve, αXun...branch pipe. (Ir)

Claims (1)

【特許請求の範囲】 （ａ）液化天然ガス（ＬＮＧ）をポンプなどの昇圧手段
により昇圧するとともに、この昇圧ＬＮＧを圧力容器内
に圧入し、 （ｂ）該圧力容器を加熱して内部のＬＮＧを気化、膨張
せしめて任意の圧力の圧縮天然ガス（ＣＮＧ）を得るこ
とを特徴とする液化天然ガスより圧縮天然ガスを製造す
る方法。[Claims] (a) Liquefied natural gas (LNG) is pressurized by a pressure increasing means such as a pump, and this pressurized LNG is pressurized into a pressure vessel; (b) the pressure vessel is heated to reduce the internal LNG. A method for producing compressed natural gas from liquefied natural gas, which comprises vaporizing and expanding CNG to obtain compressed natural gas (CNG) at a desired pressure.
JP59136895A 1984-07-02 1984-07-02 Process for producing compressed natural gas from liquefied natural gas Pending JPS6116991A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59136895A JPS6116991A (en) 1984-07-02 1984-07-02 Process for producing compressed natural gas from liquefied natural gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59136895A JPS6116991A (en) 1984-07-02 1984-07-02 Process for producing compressed natural gas from liquefied natural gas

Publications (1)

Publication Number Publication Date
JPS6116991A true JPS6116991A (en) 1986-01-24

Family

ID=15186063

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59136895A Pending JPS6116991A (en) 1984-07-02 1984-07-02 Process for producing compressed natural gas from liquefied natural gas

Country Status (1)

Country Link
JP (1) JPS6116991A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6899146B2 (en) 2003-05-09 2005-05-31 Battelle Energy Alliance, Llc Method and apparatus for dispensing compressed natural gas and liquified natural gas to natural gas powered vehicles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6899146B2 (en) 2003-05-09 2005-05-31 Battelle Energy Alliance, Llc Method and apparatus for dispensing compressed natural gas and liquified natural gas to natural gas powered vehicles
US7222647B2 (en) 2003-05-09 2007-05-29 Battelle Energy Alliance, Llc Apparatus for dispensing compressed natural gas and liquified natural gas to natural gas powered vehicles

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