EP1723314A1 - Procede de generation d'energie a partir de postes de regulation de pression d'un systeme de distribution de gaz naturel - Google Patents

Procede de generation d'energie a partir de postes de regulation de pression d'un systeme de distribution de gaz naturel

Info

Publication number
EP1723314A1
EP1723314A1 EP05714600A EP05714600A EP1723314A1 EP 1723314 A1 EP1723314 A1 EP 1723314A1 EP 05714600 A EP05714600 A EP 05714600A EP 05714600 A EP05714600 A EP 05714600A EP 1723314 A1 EP1723314 A1 EP 1723314A1
Authority
EP
European Patent Office
Prior art keywords
natural gas
turbine
pressure control
pressure
gas
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.)
Withdrawn
Application number
EP05714600A
Other languages
German (de)
English (en)
Other versions
EP1723314A4 (fr
Inventor
Jose Lourenco
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.)
Tri Gas and Oil Trade SA
Original Assignee
Tri Gas and Oil Trade SA
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 Tri Gas and Oil Trade SA filed Critical Tri Gas and Oil Trade SA
Publication of EP1723314A1 publication Critical patent/EP1723314A1/fr
Publication of EP1723314A4 publication Critical patent/EP1723314A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
    • F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether

Definitions

  • the present invention relates to method of generating power from pressure control stations of a natural gas distribution system.
  • Natural gas distribution systems use three types of natural gas pipeline networks: high pressure (approximately 1,000 psig), medium pressure (approximately 100 psig) and low pressure (approximately 5 psig). Where the high pressure pipeline network feeds into the medium pressure pipeline network, the pressure must be reduced from 1000 psig to 100 psig. Where the medium pressure pipeline network feeds into the low pressure pipeline network, the pressure must be reduced from lOOpsig to 5psig. This is done through a series of pressure reducing control valves at facilities known as Pressure Control Stations. As the pressure of natural gas is reduced, it expands. As the natural gas expands, the temperature of the natural gas decreases.
  • a method of generating power from a pressure control station of a natural gas distribution system involves channelling natural gas entering the pressure control station into a turbine which is powered by expansion of the natural gas as the pressure of the natural gas is reduced.
  • a second step involves capturing the output of the turbine for application for useful purposes.
  • the method described above utilizes energy that is presently lost across the stem of the pressure control valves and utilizes it in a form of turbine which is powered by expanding gases, commonly known as a Turbo-expander.
  • FIGURE 1 labelled as PRIOR ART is a schematic diagram of a Pressure Control
  • FIGURE 2 is a schematic diagram of a Pressure Control Station constructed in accordance with the teachings of the present invention.
  • FIGURE 1 a high pressure pipeline network is indicated by reference numeral 12 and a low pressure pipeline network is indicated by reference numeral 14. Interposed between high pressure pipeline network 12 and low pressure pipeline network 14 is a Pressure Control Station generally indicated by reference numeral 16. High pressure natural gas flowing from high pressure pipeline network 12 passes through a first line shut off valve 18, a course control valve assembly, generally indicated by reference numeral 20, a fine control valve assembly 22, before encountering a second line shut off valve 24.
  • a boiler 26 with an associated heat exchanger 28 is positioned on a diversion loop 30.
  • Three valves 32 are provided which control the feed of natural gas into and out of heat exchanger 28.
  • Natural gas is pre-heated in heat exchanger 28.
  • the pre-heated natural gas is then directed through a series of pressure reducing control valves 34.
  • a third line shut off valve 36 enables Pressure Control Station 16 to be isolated from low pressure pipeline network 14.
  • a fuel gas supply conduit 38 diverts some of the processed low pressure natural gas for use in fuelling boiler 26.
  • the principle of operation is to preheat the natural gas in heat exchanger 28 to avoid the production of hydrates when the natural gas passes through the series of pressure reducing control valves 34.
  • the energy generated as the pressure of the natural gas is produced is lost at pressure reducing control valves 34.
  • energy input is needed in the form of gas consumption to power boiler 26. There is, therefore, a net energy loss.
  • FIGURE 2 a configuration in accordance with the present method is illustrated as being super-imposed upon the PRIOR ART Pressure Control Station of FIGURE 1. It is envisaged that the existing infrastructure will be kept in place to maintain redundant systems for reasons of public safety.
  • natural gas is diverted by passing heat exchanger 28 and series of pressure reducing control valves 34.
  • a key aspect of the present method is channelling natural gas entering Pressure Control Station along line 50 and into a turbine 52 which is powered by expansion of the natural gas as the pressure of the natural gas is reduced. The output of turbine 52 is then captured for application for useful purposes. It is preferred that the turbine be used to power an electrical generator 54.
  • the use of turbine 52 can be done either with or without the natural gas being pre-heated, as will hereinafter be further described.
  • Turbine 52 is preferably a turbine known as a "turbo-expander". It is a radial inflow turbine with variable inlet guide vanes for flow control, which are used to extract energy from a gas stream.
  • the method uses the turbo-expander (turbine 52) to generate power in Pressure Control Stations 16 in a natural gas distribution system. The expansion across the inlet guide vanes and expander wheel produces torque and therefore shaft power that can be used to turn power generator 54.
  • turbine 52 can be used without preheating the natural gas.
  • the natural gas is channelled into turbine 52, with a view to intentionally generating cold temperatures.
  • a heat exchanger 56 is provided to capture the cold temperatures generated for use in either refrigeration or air conditioning.
  • a fluid circulation can then be provided through heat exchanger 56 which can be used for air conditioning of nearby facilities or refrigeration of nearby cold storage warehouses.
  • the refrigeration achieved by expansion of the gas is usually much more than achieved by Joule-Thompson (J-T) expansion across a valve.
  • J-T Joule-Thompson
  • boiler 26 replaced by a gas fuelled turbine power generator 58, sometimes referred to as a "micro-turbine".
  • a portion of the high pressure natural gas is diverted along conduit 60 and passed through a gas conditioning system 62 to condition the natural gas so that the natural gas is suitable to power gas fuelled turbine power generator 58.
  • Exhaust gases from gas fuelled turbine power generator flow along conduit 64 and are passed through a first heat exchanger 66.
  • a hot water circulation circuit is provided which includes expansion tank circulation conduit 68, expansion tank 70, a pump 74 and valves 76.
  • Expansion tank 70 provides make up water for circulation conduit 68, as required.
  • Pump 74 is used to circulate hot water through circulation conduit 68. Water is circulated through conduit 68, which passes heat exchanger

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

La présente invention se rapporte à un procédé permettant de produire de l'énergie à partir d'un poste de régulation de pression contenu dans un système de distribution de gaz naturel. Ledit procédé consiste, lors d'une première étape, à canaliser le gaz naturel entrant dans le poste de régulation de pression vers une turbine (52) qui est alimentée par la dilatation du gaz naturel survenant lorsque la pression de ce dernier est réduite. Le procédé consiste également, lors d'une deuxième étape, à capturer la sortie de la turbine (52) à des fins utiles.
EP05714600A 2004-03-09 2005-03-09 Procede de generation d'energie a partir de postes de regulation de pression d'un systeme de distribution de gaz naturel Withdrawn EP1723314A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA2461086A CA2461086C (fr) 2004-03-09 2004-03-09 Methode de production d'energie a partir de postes de commande de la pression d'un systeme de distribution de gaz naturel
PCT/CA2005/000359 WO2005085603A1 (fr) 2004-03-09 2005-03-09 Procede de generation d'energie a partir de postes de regulation de pression d'un systeme de distribution de gaz naturel

Publications (2)

Publication Number Publication Date
EP1723314A1 true EP1723314A1 (fr) 2006-11-22
EP1723314A4 EP1723314A4 (fr) 2008-06-18

Family

ID=34916939

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05714600A Withdrawn EP1723314A4 (fr) 2004-03-09 2005-03-09 Procede de generation d'energie a partir de postes de regulation de pression d'un systeme de distribution de gaz naturel

Country Status (10)

Country Link
US (1) US20070177969A1 (fr)
EP (1) EP1723314A4 (fr)
BR (1) BRPI0507437A (fr)
CA (1) CA2461086C (fr)
IL (1) IL177976A0 (fr)
MX (1) MXPA06010263A (fr)
NO (1) NO20064377L (fr)
RU (2) RU2006135344A (fr)
UA (1) UA86795C2 (fr)
WO (1) WO2005085603A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1905948B1 (fr) 2006-09-12 2012-10-24 Cryostar SAS Machine de récuperation de l'énergie
CN102383870A (zh) * 2011-11-17 2012-03-21 重庆川然节能技术有限公司 自适应后端负荷变化的天然气压差发电系统
DE102014216755A1 (de) 2014-08-22 2016-02-25 Rwe Deutschland Ag Verfahren zur Stromerzeugung innerhalb eines Gasnetzes sowie Gasdruckentspannungseinrichtung zur Verwendung bei dem Verfahren
US20170059091A1 (en) * 2015-08-28 2017-03-02 Chevron U.S.A. Inc. Energy recovery from reduction in pressure of a dense phase hydrocarbon fluid
CN109322745A (zh) * 2017-07-31 2019-02-12 上海电气燃气轮机有限公司 天然气加热系统、调压站和燃气轮机联合循环机组
CN110185506B (zh) * 2019-05-27 2022-02-08 西南石油大学 一种天然气调压站压力能综合利用系统
CN110230771A (zh) * 2019-06-06 2019-09-13 上海航天智慧能源技术有限公司 一种可移动冷能发电装置的lng气化系统
CN114622961B (zh) * 2020-12-10 2024-05-31 中国石油化工股份有限公司 一种天然气余压发电和制冰循环利用系统及利用方法
CN114165291B (zh) * 2021-10-22 2023-11-24 上海工程技术大学 一种气动叶轮
CN119572944A (zh) * 2023-09-05 2025-03-07 中国石油天然气股份有限公司 一种天然气压力能发电调压装置及方法

Family Cites Families (15)

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CA874245A (en) * 1967-01-31 1971-06-29 Canadian Liquid Air Natural gas liquefaction process
US3735600A (en) * 1970-05-11 1973-05-29 Gulf Research Development Co Apparatus and process for liquefaction of natural gases
JPS58106109A (ja) * 1981-12-18 1983-06-24 Chiyoda Chem Eng & Constr Co Ltd タ−ビンによるｌｎｇからの動力回収法
US4995234A (en) * 1989-10-02 1991-02-26 Chicago Bridge & Iron Technical Services Company Power generation from LNG
CH682761A5 (de) * 1990-12-03 1993-11-15 Asea Brown Boveri Verfahren zur Druckverminderung eines Gases aus einem Primärnetz.
RU2009389C1 (ru) * 1992-05-25 1994-03-15 Акционерное общество "Криокор" Газораспределительная станция с энергетической установкой
EP0596143A4 (fr) * 1992-05-25 1994-12-07 Aktsionernoe Obschestvo Kryoko Station de distribution de gaz a installation de production d'energie.
US5295350A (en) * 1992-06-26 1994-03-22 Texaco Inc. Combined power cycle with liquefied natural gas (LNG) and synthesis or fuel gas
DE4223160C2 (de) * 1992-07-10 1998-02-12 Mannesmann Ag Verfahren und Anlage zur Verdichtung von Gas
US5473900A (en) * 1994-04-29 1995-12-12 Phillips Petroleum Company Method and apparatus for liquefaction of natural gas
TW432192B (en) * 1998-03-27 2001-05-01 Exxon Production Research Co Producing power from pressurized liquefied natural gas
US6167692B1 (en) * 1998-06-29 2001-01-02 General Electric Co. Method of using fuel gas expander in power generating plants
US6751985B2 (en) * 2002-03-20 2004-06-22 Exxonmobil Upstream Research Company Process for producing a pressurized liquefied gas product by cooling and expansion of a gas stream in the supercritical state
US7272932B2 (en) * 2002-12-09 2007-09-25 Dresser, Inc. System and method of use of expansion engine to increase overall fuel efficiency
MX2007000341A (es) * 2004-07-14 2007-03-27 Fluor Tech Corp Configuraciones y metodos para generacion de energia con regasificacion de gas natural licuado integrado.

Also Published As

Publication number Publication date
BRPI0507437A (pt) 2007-07-24
WO2005085603A1 (fr) 2005-09-15
CA2461086A1 (fr) 2005-09-09
RU2006135344A (ru) 2008-04-20
UA86795C2 (uk) 2009-05-25
RU106307U8 (ru) 2012-02-20
MXPA06010263A (es) 2007-01-19
EP1723314A4 (fr) 2008-06-18
IL177976A0 (en) 2006-12-31
RU106307U1 (ru) 2011-07-10
NO20064377L (no) 2006-11-07
US20070177969A1 (en) 2007-08-02
CA2461086C (fr) 2010-12-21

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