JPS6272999A - Method of adjusting heating value of city gas or the like - Google Patents

Method of adjusting heating value of city gas or the like

Info

Publication number
JPS6272999A
JPS6272999A JP60211370A JP21137085A JPS6272999A JP S6272999 A JPS6272999 A JP S6272999A JP 60211370 A JP60211370 A JP 60211370A JP 21137085 A JP21137085 A JP 21137085A JP S6272999 A JPS6272999 A JP S6272999A
Authority
JP
Japan
Prior art keywords
lng
lpg
gas
heat
tank
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
JP60211370A
Other languages
Japanese (ja)
Inventor
Yuzo Sugawara
菅原　佑三
Yasuhiro Takagishi
高岸　泰弘
Tatsuo Katayama
片山　龍夫
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.)
Tokyo Gas Co Ltd
Original Assignee
Tokyo Gas Co Ltd
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 Tokyo Gas Co Ltd filed Critical Tokyo Gas Co Ltd
Priority to JP60211370A priority Critical patent/JPS6272999A/en
Publication of JPS6272999A publication Critical patent/JPS6272999A/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
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0119—Shape cylindrical with flat end-piece
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/035—Propane butane, e.g. LPG, GPL
    • 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
    • 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
    • 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
    • F17C2227/0337—Heat exchange with the fluid by cooling
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

PURPOSE:To reduce the number of vaporizers and to simplify the installation of a gas line, by providing such a process that LPG having been precooled to a temperature near the liquefied temperature of LNG is mixed with LNG in an LNG tank, and thereafter the thus obtained mixture liquid is evaporated. CONSTITUTION:LPG is introduced from an LPG tank 2 into a heat-exchanger 4 where LPG is cooled down to a temperature near to the liquefied temperature of LNG, and is then introduced into an LNG tank 1. LPG gas whose flow rate is adjusted by a control valve 10 is mixed with LNG and the thus obtained mixture liquid having a heat value adjusted to a desired value is led into a communication pipe line 7 by means of a pump 12. The mixture liquid in the pipe 7 is evaporated by only one vaporizer 6 into gas which is then fed into a supply system of city gas or the like.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、液−液混合せしめられた液化天燃がス（以下
ＬＮＧという。）及び液化石油ガス（以下ＬＰＧという
。）を気化してなる都市がス等の熱量調整方法に関する
。[Detailed Description of the Invention] [Industrial Application Field] The present invention is a method for vaporizing liquid-liquid mixed liquefied natural gas (hereinafter referred to as LNG) and liquefied petroleum gas (hereinafter referred to as LPG). This article relates to a method for adjusting the amount of heat in cities such as Su.

〔従来の技術〕[Conventional technology]

一般に、がス事業者が供給する都市ガス等は、石炭、ナ
フサ、購入がス、　ＬＮＧ　、　ＬＰＧ等を原料として
製造されたがスを混合して供給規定に定める発熱量に調
整したものである。In general, city gas etc. supplied by gas companies is a mixture of gas produced from coal, naphtha, purchased gas, LNG, LPG, etc. and adjusted to the calorific value specified in the supply regulations. .

近時、最も多量に使用されるＬＮＧの場合にあっては、
ＬＮＧの熱量を所望量に増加させるため、種種の方法で
該ＬＮＧにＬＰＧを混合することが行われている。In the case of LNG, which is used in the largest quantity these days,
In order to increase the calorific value of LNG to a desired amount, various methods have been used to mix LNG with LNG.

その代表的なものには、ＬＮＧを気化してガス化し、こ
れにＬＰＧを気化して、がスーガスの状態で混合する方
法と、ＬＮＧ　ｆ、気化し、これに液状のＬＰＧをがス
ー液の状態で混合する方法とがある。Typical methods include a method in which LNG is vaporized and gasified, and LPG is vaporized and mixed with this in a sous gas state; There is a method of mixing in the state.

前者は、気化してが気化されたＬＮＧに対し、増熱用の
ＬＰＧを気化して両者を混合するものでちるが、ＬＰＧ
を気化するための高温の熱エネルギーを要するとともに
、熱交換器や熱量調整器の設備が必要で、変動費や設備
費等がかさみ経済的に不利であり、また、後者はＬＰＧ
を液状で混合するので、直接ＬＰＧの気化に必要なエネ
ルギーはいらないが、ＬＮＧを気化して得られる天然ガ
ス中に噴霧状のＬＰＧを混入して咳天然ガスの顕熱によ
り気化するものであるから、該噴霧状ＬＰＧの気化に伴
って天然ガスの温度を低下せしめ、従って、混合割合が
ある範囲に限定される等の欠点を有するものである。The former is a method that vaporizes LPG for heat increase and mixes the two with LNG that has been vaporized.
In addition to requiring high-temperature thermal energy to vaporize LPG, it also requires equipment such as heat exchangers and heat quantity regulators, which increases variable costs and equipment costs, making it economically disadvantageous.
Since LPG is mixed in liquid form, there is no need for the energy required to directly vaporize LPG, but atomized LPG is mixed into the natural gas obtained by vaporizing LNG and vaporized by the sensible heat of the natural gas. Therefore, as the atomized LPG is vaporized, the temperature of the natural gas is lowered, and therefore, the mixing ratio is limited to a certain range.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

本発明は、ＬＮＧ　Ｋ対するＬＰＧの混合割合が大であ
って増熱の範囲が拡大され、また、熱交換器又は熱量調
整器等において大型の設備が不必要となり、さらに、Ｌ
ＰＧの払出し系が何等かのトラブルでシャットダウンし
た場合等であっても、予めＬＮＧタンク内にスト、りさ
れている混合液で対応が可能である等従来の問題点が解
決され、しかも従来に較べ一層簡易に熱量調整が可能な
方法を提供することをその目的とするものである。The present invention has a large mixing ratio of LPG to LNG K, which expands the range of heat increase, eliminates the need for large-scale equipment such as a heat exchanger or heat regulator, and furthermore,
Even if the PG dispensing system shuts down due to some kind of trouble, it can be handled with the mixed liquid stored in the LNG tank in advance. The purpose is to provide a method that allows for easier adjustment of the amount of heat.

〔問題点を解決するための手段〕[Means for solving problems]

本発明は上記の問題点を解決するために、ａ、　　ＬＮ
Ｇの液温近くまで予冷されたＬＰＧをＬＮＧタンク内に
おいてＬＮＧに混合したのち、ｂ、該混合液を気化して
所望の熱量に調整された都市ガス等をつる 以上を要旨として成立するものである。In order to solve the above problems, the present invention provides a, LN
After mixing LPG that has been pre-cooled to a temperature close to the liquid temperature of G with LNG in an LNG tank, (b) vaporizing the mixed liquid and producing city gas etc. that has been adjusted to the desired calorific value. be.

以下図面を参照し実施例に基づいて本発明を説明する。The present invention will be described below based on embodiments with reference to the drawings.

〔実施例〕〔Example〕

本実施例において適用されるＬＮＧ及びＬＰＧは、次の
如きものである。即ち、 （１）マず、ＬＮＧは、熱量１０＋　２００　ｋａｚｌ
　／　Ｎｒｎ３．沸点−１６０℃（ｌａｔｍ） （１１）また、ＬＰＧは、熱！　２４，０００　ｋＪ　
／　Ｎｍ３．沸点−４２℃（ｌａｔｍ） である。The LNG and LPG applied in this example are as follows. That is, (1) First, LNG has a calorific value of 10 + 200 kazl
/Nrn3. Boiling point -160℃ (latm) (11) Also, LPG is heat! 24,000 kJ
/ Nm3. The boiling point is -42°C (latm).

第１図は、本発明方法を示す説明図である。密閉式のＬ
ＮＧタンク１は、地上式又は地下式のいずれであっても
よいが、通常頂上部近傍に？イルオフガスの小管（図示
せず）を有する。同じく密閉式のＬＰＧタンク２から延
設される導管３を通って熱交換器４にはいるＬＰＧは、
この熱交換器で、ＬＮＧの液温近くまで冷却せしめられ
、ついでミキシングノズル５を通ってＬＮＧタンク１に
流入する。熱交換器４の熱源は熱を調整済みのＬＮＧタ
ンク（図示せず）から、導管８に導かれたＬＮＧで、Ｌ
ＰＧを冷却してが気化せしめられたのち供給がスに混入
するようがス導管９に送られる。FIG. 1 is an explanatory diagram showing the method of the present invention. Closed type L
The NG tank 1 may be either an above-ground type or an underground type, but is usually located near the top? It has a small tube of oil-off gas (not shown). LPG enters the heat exchanger 4 through the conduit 3 extending from the similarly closed LPG tank 2.
This heat exchanger cools the LNG to near the liquid temperature, and then it flows into the LNG tank 1 through the mixing nozzle 5. The heat source of the heat exchanger 4 is LNG led to a conduit 8 from a heat-regulated LNG tank (not shown).
After the PG has been cooled and vaporized, the supply is sent to the gas conduit 9 for mixing with the gas.

ＬＰＧのＬＮＧに対する混入に基づく予想増熱量は、Ｌ
ＮＧタンク１に設置される密度計（図示せず）による混
合液に係る密度測定値から測定される。The expected heat increase based on the mixing of LPG with LNG is L
It is measured from the density measurement value of the mixed liquid by a density meter (not shown) installed in the NG tank 1.

ＬＰＧの流入は、該測定値に対応して開閉作動するバル
ブ１０によりコントロールされる。また、ＬＮＧの熱交
換器への流入は、バルブ１ｏに連動して開閉するバルブ
１１によりコントロールされる。The inflow of LPG is controlled by a valve 10 that opens and closes in response to the measured value. Further, the flow of LNG into the heat exchanger is controlled by a valve 11 that opens and closes in conjunction with the valve 1o.

かくして、所望の増熱量に調節されたＬＮＧとＬＰＧと
の液−液混合物は、ボン７６１２によって導管７に払出
しされペーパライザ６に至って気化せしめられ、都市ガ
ス等の供給系統に送られることとなる。In this way, the liquid-liquid mixture of LNG and LPG adjusted to the desired amount of heat increase is delivered to the conduit 7 by the bomb 7612, reaches the paperizer 6, is vaporized, and is sent to a supply system such as city gas.

〔発明の効果〕〔Effect of the invention〕

本発明は以上の構成に基づくものであってぺ一／４ライ
ブは１基ですみ、伝熱面積も総計で小さくなるので設備
ノ費、変動費が大幅に低減されることとなる。また、Ｌ
ＮＧとＬＰＧとの混合液を気化することとなるので、ペ
ーパライザは１個ですむ等系統が単純化され信頼性が高
くなる等多くの利点を有するものである。The present invention is based on the above configuration, and only one P1/4 live unit is required, and the heat transfer area is also reduced in total, resulting in a significant reduction in equipment costs and variable costs. Also, L
Since a mixed liquid of NG and LPG is vaporized, it has many advantages, such as requiring only one paperizer, simplifying the system, and increasing reliability.

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

第１図は本発明に係る熱量調整方法を実施するための装
置の説明図である。 １・・・ＬＮＧタンク、２・・・ＬＰＧタンク、４・・
・熱交換器、５・・・ミキシングノズル、６・・・ペー
パライザ、１０．１１・・・バ・レプ。FIG. 1 is an explanatory diagram of an apparatus for carrying out the heat amount adjustment method according to the present invention. 1... LNG tank, 2... LPG tank, 4...
・Heat exchanger, 5...Mixing nozzle, 6...Paperizer, 10.11...Ba rep.

Claims (1)

【特許請求の範囲】[Claims] 液化天然ガスの液温近くまで予冷された液化石油ガスを
液化天然ガスタンク内において液化天然ガスに混合した
のち該混合液を気化して所望の熱量に調整された都市ガ
ス等をうることを特徴とする都市ガス等の熱量調整方法
。The method is characterized in that liquefied petroleum gas pre-cooled to a temperature close to that of liquefied natural gas is mixed with liquefied natural gas in a liquefied natural gas tank, and then the mixed liquid is vaporized to obtain city gas etc. whose calorific value is adjusted to a desired value. How to adjust the amount of heat of city gas, etc.
JP60211370A 1985-09-25 1985-09-25 Method of adjusting heating value of city gas or the like Pending JPS6272999A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60211370A JPS6272999A (en) 1985-09-25 1985-09-25 Method of adjusting heating value of city gas or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60211370A JPS6272999A (en) 1985-09-25 1985-09-25 Method of adjusting heating value of city gas or the like

Publications (1)

Publication Number Publication Date
JPS6272999A true JPS6272999A (en) 1987-04-03

Family

ID=16604837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60211370A Pending JPS6272999A (en) 1985-09-25 1985-09-25 Method of adjusting heating value of city gas or the like

Country Status (1)

Country Link
JP (1) JPS6272999A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU691741B2 (en) * 1995-03-16 1998-05-21 Kvaerner Maritime A.S Heat exchanger device
US7404301B2 (en) 2005-07-12 2008-07-29 Huang Shawn S LNG facility providing enhanced liquid recovery and product flexibility
US20100011663A1 (en) * 2008-07-18 2010-01-21 Kellogg Brown & Root Llc Method for Liquefaction of Natural Gas

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU691741B2 (en) * 1995-03-16 1998-05-21 Kvaerner Maritime A.S Heat exchanger device
US5819542A (en) * 1995-03-16 1998-10-13 Kvaerner Maritime As Heat exchanger device
US7404301B2 (en) 2005-07-12 2008-07-29 Huang Shawn S LNG facility providing enhanced liquid recovery and product flexibility
US20100011663A1 (en) * 2008-07-18 2010-01-21 Kellogg Brown & Root Llc Method for Liquefaction of Natural Gas
US8381544B2 (en) * 2008-07-18 2013-02-26 Kellogg Brown & Root Llc Method for liquefaction of natural gas

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