CA2461086C - Method of power generation from pressure control stations of a natural gas distribution system - Google Patents
Method of power generation from pressure control stations of a natural gas distribution system Download PDFInfo
- Publication number
- CA2461086C CA2461086C CA2461086A CA2461086A CA2461086C CA 2461086 C CA2461086 C CA 2461086C CA 2461086 A CA2461086 A CA 2461086A CA 2461086 A CA2461086 A CA 2461086A CA 2461086 C CA2461086 C CA 2461086C
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- natural gas
- pressure
- heat exchanger
- turbine
- gas
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Classifications
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- 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
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- 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
A method is described of generating power from a pressure control station of a natural gas distribution system. A first step 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 useful purposes.
Description
TITLE OF THE INVENTION:
Method of power generation from pressure control stations of a natural gas distribution system FIELD OF 'THE INVENTION
The present invention relates to method of generating; power from pressure control stations of a natural gas distribution system.
BACKGROUND OF THE INVENTION
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 100psig to Spsig. This is done through a series of pressure reducing control valves at facilities known as Pressure Control Stations.
Method of power generation from pressure control stations of a natural gas distribution system FIELD OF 'THE INVENTION
The present invention relates to method of generating; power from pressure control stations of a natural gas distribution system.
BACKGROUND OF THE INVENTION
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 100psig to Spsig. This is done through a series of pressure reducing control valves at facilities known as Pressure Control Stations.
2 0 As the pressure of natural gas is reduced, it expands. As the natural gas expands, the temperature of the natural gas decreases. This dramatic drop in temperature leads to the formation of hydrates, which damage the pressure reducing control valves.
In order to avoid the formation of hydrates, the natural gas is pre-heated at the Pressure Control Stations before pressure is reduced, with a view to maintaining an outlet temperature of ~
2 5 degrees Celsius. The mode of preheating the natural gas upstream of the pressure control valves is by consuming some of the natural gas in a hot water or low pressure steam boiler, which supplies heat to a heat exchanger. The heat exchanger is then used to preheat the incoming natural gas.
In order to avoid the formation of hydrates, the natural gas is pre-heated at the Pressure Control Stations before pressure is reduced, with a view to maintaining an outlet temperature of ~
2 5 degrees Celsius. The mode of preheating the natural gas upstream of the pressure control valves is by consuming some of the natural gas in a hot water or low pressure steam boiler, which supplies heat to a heat exchanger. The heat exchanger is then used to preheat the incoming natural gas.
3 0 In this typical mode of pipeline pressure control arrangement, the energy lost across the pressure reducing control valves in bringing the prE;ssure down from 1000psig to 100psig is significant. Similarly, there is energy lost across the pressure reducing control valves in bringing the pressure down from 100psig to 5psig. If this energy could be captured; there potentially could be a net energy gain, as opposed to a net energy loss realized from the Pressure Control Stations.
SUMMARY OF THE INVENTION
What is required is a method of generating power from pressure control stations of a natural gas distribution system.
According to the present invention there is provided av method of generating power from a pressure control station of a natural gas distribution system. A first step involves channelling natural gas entering the pressure control station unto a turbine which is powered by expansion of the natural gas as the pressure of the natural l;as 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.
These and other features of the invention will become more apparent from the following descriptian in which reference is made to the appended drawings, the drawings are for the purpose of illustration only and are not intended to in any way limit the scope of the invention to the particular embodiment or embodiments shown, wherein:
2 5 FIGURE 1 labelled as PRIOR ART is a schematic diagram of a Pressure Control Station.
FIGURE 2 is a schematic diagram of a Pressure Control Station constructed in accordance with the teachings of the present invention.
The preferred method of generating power from a press~.ure control station of a natural gas distribution system will now be described with reference to (FIGURES 1 and 2.
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.rsr~Se~SZa&.v";amzaam.xam:?ca.r~urc~,zas,"..
In order to place the present method in context, the PRIOR ART system will first be described. Referring to 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 ~.ne 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. In addition, energy input is needed in the form of gas 2 0 consumption to power boiler 26. There is, therefore, a net energy loss.
Referring to FIGURE Z, 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 2 5 redundant systems for reasons of public safety.
In accordance with the teachings of the present method, 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 3 0 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 elE:ctrical 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 (turlbine 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.
Where the natural gas specifications of the working stream permit, 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 nnuch more than achieved by 3oule-Thompson (J-T) expansion across a valve.
2 0 Where preheating of the natural gas is required, 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 2 5 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 7U 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 66, so that a 3 0 heat transfer takes place with the hot exhaust gases from gas fuelled turbine power generator 58 and heating the water. The exhaust gases are then released to atmosphere. A
secondary heat exchange then takes place in a second heat exchanger 78 between the hot water and the natural gas. The natural gas, which has been preheated in seco~ad heat exchanger 78 is then channelled through line 50 to t«rbine 52. The output of gas fuelled turbine power generator 58 is also captured for useful purposes of power generation through generator portion 54.
The intent of the method is to capture and use energy that is currently being wasted.
5 Depending upon the circumstances, it may be desirable to position a dehydrator upstream of second heat exchanger 78, to dry the natural gas. Suitable dehydrators which use absorbent medium are well known in the art. Normally two <~re used. One is always in service, while the absorbent medium in the other is being regenerated. Of course, where the objective is to generate low temperatures for the purpose of air conditioning or refrigeration, the hot water circulation circuit will not be used.
In this patent document, the word "comprising" is used in its non-limiting sense to mean that items following the word are included, but items not specifically mentioned are :not excluded. A reference to an element by the indefinite article "a" does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be one and only one of the elements.
It will be apparent to one skilled in the art that modi',fixcations may be made to the 2 0 illustrated embodiment without departing from the spirit and scope of the invention as hereinafter defined in the Claims.
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~~*" .~P w~»SZY-m3~SFSaiFt~ Sss~.~-~,sm "~, ps~ v,?qf~ W .m.vnx,.~=~.
SUMMARY OF THE INVENTION
What is required is a method of generating power from pressure control stations of a natural gas distribution system.
According to the present invention there is provided av method of generating power from a pressure control station of a natural gas distribution system. A first step involves channelling natural gas entering the pressure control station unto a turbine which is powered by expansion of the natural gas as the pressure of the natural l;as 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.
These and other features of the invention will become more apparent from the following descriptian in which reference is made to the appended drawings, the drawings are for the purpose of illustration only and are not intended to in any way limit the scope of the invention to the particular embodiment or embodiments shown, wherein:
2 5 FIGURE 1 labelled as PRIOR ART is a schematic diagram of a Pressure Control Station.
FIGURE 2 is a schematic diagram of a Pressure Control Station constructed in accordance with the teachings of the present invention.
The preferred method of generating power from a press~.ure control station of a natural gas distribution system will now be described with reference to (FIGURES 1 and 2.
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.rsr~Se~SZa&.v";amzaam.xam:?ca.r~urc~,zas,"..
In order to place the present method in context, the PRIOR ART system will first be described. Referring to 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 ~.ne 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. In addition, energy input is needed in the form of gas 2 0 consumption to power boiler 26. There is, therefore, a net energy loss.
Referring to FIGURE Z, 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 2 5 redundant systems for reasons of public safety.
In accordance with the teachings of the present method, 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 3 0 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 elE:ctrical 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 (turlbine 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.
Where the natural gas specifications of the working stream permit, 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 nnuch more than achieved by 3oule-Thompson (J-T) expansion across a valve.
2 0 Where preheating of the natural gas is required, 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 2 5 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 7U 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 66, so that a 3 0 heat transfer takes place with the hot exhaust gases from gas fuelled turbine power generator 58 and heating the water. The exhaust gases are then released to atmosphere. A
secondary heat exchange then takes place in a second heat exchanger 78 between the hot water and the natural gas. The natural gas, which has been preheated in seco~ad heat exchanger 78 is then channelled through line 50 to t«rbine 52. The output of gas fuelled turbine power generator 58 is also captured for useful purposes of power generation through generator portion 54.
The intent of the method is to capture and use energy that is currently being wasted.
5 Depending upon the circumstances, it may be desirable to position a dehydrator upstream of second heat exchanger 78, to dry the natural gas. Suitable dehydrators which use absorbent medium are well known in the art. Normally two <~re used. One is always in service, while the absorbent medium in the other is being regenerated. Of course, where the objective is to generate low temperatures for the purpose of air conditioning or refrigeration, the hot water circulation circuit will not be used.
In this patent document, the word "comprising" is used in its non-limiting sense to mean that items following the word are included, but items not specifically mentioned are :not excluded. A reference to an element by the indefinite article "a" does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be one and only one of the elements.
It will be apparent to one skilled in the art that modi',fixcations may be made to the 2 0 illustrated embodiment without departing from the spirit and scope of the invention as hereinafter defined in the Claims.
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a..~..,~,2"~',,Cx .... .r .a .R'.:~".aHl,"fi.m'$tF:,:wv,~,R~c°.3'a'Ta~C~"~FC't~r r .,..,rc0..
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Claims (2)
1. A method of generating power from a pressure control station of a natural gas distribution system, comprising the steps of:
determining a pressure and temperature required for the natural gas distribution system;
channelling natural gas entering the pressure control system into an expansion turbine which is powered by expansion of the natural gas as the pressure of the natural gas is reduced, thereby effecting a pressure reduction for the natural gas;
capturing the output of the expansion turbine via a first power generator for application for useful purposes;
heating the natural gas downstream of the expansion turbine by passing the natural gas through a downstream heat exchanger to effect a heat exchange with a coolant to capture cold temperatures generated for one of refrigeration or air conditioning, thereby effecting a temperature reduction of the natural gas;
where the required pressure and temperature for the natural gas distribution system has not been attained, taking further steps of:
using a portion of the natural gas to power a gas fuelled turbine;
passing exhaust gases from the gas fuelled turbine through an exhaust gas heat exchanger through which is circulated a fluid heat transfer medium;
passing the fluid heat transfer medium which has been heated in the exhaust gas heat exchanger through an upstream heat exchanger positioned upstream of the expansion turbine to preheat the natural gas being channelled into the expansion turbine, wherein a pump is used to effect a circulation of the fluid heat transfer medium along a circulation path between the exhaust gas heat exchanger and the upstream heat exchanger; and capturing the output of the gas fuelled turbine via a second power generator for application for useful purposes.
determining a pressure and temperature required for the natural gas distribution system;
channelling natural gas entering the pressure control system into an expansion turbine which is powered by expansion of the natural gas as the pressure of the natural gas is reduced, thereby effecting a pressure reduction for the natural gas;
capturing the output of the expansion turbine via a first power generator for application for useful purposes;
heating the natural gas downstream of the expansion turbine by passing the natural gas through a downstream heat exchanger to effect a heat exchange with a coolant to capture cold temperatures generated for one of refrigeration or air conditioning, thereby effecting a temperature reduction of the natural gas;
where the required pressure and temperature for the natural gas distribution system has not been attained, taking further steps of:
using a portion of the natural gas to power a gas fuelled turbine;
passing exhaust gases from the gas fuelled turbine through an exhaust gas heat exchanger through which is circulated a fluid heat transfer medium;
passing the fluid heat transfer medium which has been heated in the exhaust gas heat exchanger through an upstream heat exchanger positioned upstream of the expansion turbine to preheat the natural gas being channelled into the expansion turbine, wherein a pump is used to effect a circulation of the fluid heat transfer medium along a circulation path between the exhaust gas heat exchanger and the upstream heat exchanger; and capturing the output of the gas fuelled turbine via a second power generator for application for useful purposes.
2. The method as defined in Claim 1, at least one of the first power generator or the second power generator being an electrical power generator.
Priority Applications (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2461086A CA2461086C (en) | 2004-03-09 | 2004-03-09 | Method of power generation from pressure control stations of a natural gas distribution system |
| US10/598,739 US20070177969A1 (en) | 2004-03-09 | 2005-03-09 | Method of power generation from pressure control stations of a natural gas distribution system |
| PCT/CA2005/000359 WO2005085603A1 (en) | 2004-03-09 | 2005-03-09 | Method of power generation from pressure control stations of a natural gas distribution sytem |
| MXPA06010263A MXPA06010263A (en) | 2004-03-09 | 2005-03-09 | Method of power generation from pressure control stations of a natural gas distribution sytem. |
| RU2010153056/28U RU106307U8 (en) | 2004-03-09 | 2005-03-09 | NATURAL GAS DISTRIBUTION SYSTEM PRESSURE CONTROL STATION (OPTIONS) |
| EP05714600A EP1723314A4 (en) | 2004-03-09 | 2005-03-09 | Method of power generation from pressure control stations of a natural gas distribution sytem |
| RU2006135344/06A RU2006135344A (en) | 2004-03-09 | 2005-03-09 | METHOD FOR ENERGY PRODUCTION AT PRESSURE REGULATING STATIONS OF NATURAL GAS DISTRIBUTION SYSTEM |
| BRPI0507437-1A BRPI0507437A (en) | 2004-03-09 | 2005-03-09 | method for generating power from a control station to a natural gas distribution system |
| UAA200610609A UA86795C2 (en) | 2004-03-09 | 2005-09-03 | Method of generating power from a pressure control station of a natural gas distribution system |
| IL177976A IL177976A0 (en) | 2004-03-09 | 2006-09-10 | Method of power generation from pressure control stations of a natural gas distribution system |
| NO20064377A NO20064377L (en) | 2004-03-09 | 2006-09-27 | Method of generating energy from pressure control stations for a natural gas distribution system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2461086A CA2461086C (en) | 2004-03-09 | 2004-03-09 | Method of power generation from pressure control stations of a natural gas distribution system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2461086A1 CA2461086A1 (en) | 2005-09-09 |
| CA2461086C true CA2461086C (en) | 2010-12-21 |
Family
ID=34916939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2461086A Expired - Fee Related CA2461086C (en) | 2004-03-09 | 2004-03-09 | Method of power generation from pressure control stations of a natural gas distribution system |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20070177969A1 (en) |
| EP (1) | EP1723314A4 (en) |
| BR (1) | BRPI0507437A (en) |
| CA (1) | CA2461086C (en) |
| IL (1) | IL177976A0 (en) |
| MX (1) | MXPA06010263A (en) |
| NO (1) | NO20064377L (en) |
| RU (2) | RU2006135344A (en) |
| UA (1) | UA86795C2 (en) |
| WO (1) | WO2005085603A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2397526T3 (en) | 2006-09-12 | 2013-03-07 | Cryostar Sas | Energy recovery machine |
| CN102383870A (en) * | 2011-11-17 | 2012-03-21 | 重庆川然节能技术有限公司 | Natural gas pressure difference generating system self-adaptive to back-end load change |
| DE102014216755A1 (en) | 2014-08-22 | 2016-02-25 | Rwe Deutschland Ag | Method for generating electricity within a gas network and gas pressure release device for use in the method |
| 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 (en) * | 2017-07-31 | 2019-02-12 | 上海电气燃气轮机有限公司 | Heated by natural gas system, voltage regulating station and Combined-cycle Gas Turbine Unit |
| CN110185506B (en) * | 2019-05-27 | 2022-02-08 | 西南石油大学 | Pressure energy comprehensive utilization system of natural gas pressure regulating station |
| CN110230771A (en) * | 2019-06-06 | 2019-09-13 | 上海航天智慧能源技术有限公司 | A kind of LNG gasification system of removable cold energy generation device |
| CN114622961B (en) * | 2020-12-10 | 2024-05-31 | 中国石油化工股份有限公司 | Natural gas residual pressure power generation and ice making cyclic utilization system and utilization method |
| CN114165291B (en) * | 2021-10-22 | 2023-11-24 | 上海工程技术大学 | Pneumatic impeller |
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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 (en) * | 1981-12-18 | 1983-06-24 | Chiyoda Chem Eng & Constr Co Ltd | Recovery method of power from lng by turbine |
| US4995234A (en) * | 1989-10-02 | 1991-02-26 | Chicago Bridge & Iron Technical Services Company | Power generation from LNG |
| CH682761A5 (en) * | 1990-12-03 | 1993-11-15 | Asea Brown Boveri | A process for reducing the pressure of a gas from a primary network. |
| RU2009389C1 (en) * | 1992-05-25 | 1994-03-15 | Акционерное общество "Криокор" | Gas-distributing station with power plant |
| EP0596143A4 (en) * | 1992-05-25 | 1994-12-07 | Aktsionernoe Obschestvo Kryoko | Gas-distributing station with energetic installation. |
| US5295350A (en) * | 1992-06-26 | 1994-03-22 | Texaco Inc. | Combined power cycle with liquefied natural gas (LNG) and synthesis or fuel gas |
| DE4223160C2 (en) * | 1992-07-10 | 1998-02-12 | Mannesmann Ag | Process and plant for gas compression |
| 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 |
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| US7574856B2 (en) * | 2004-07-14 | 2009-08-18 | Fluor Technologies Corporation | Configurations and methods for power generation with integrated LNG regasification |
-
2004
- 2004-03-09 CA CA2461086A patent/CA2461086C/en not_active Expired - Fee Related
-
2005
- 2005-03-09 RU RU2006135344/06A patent/RU2006135344A/en unknown
- 2005-03-09 BR BRPI0507437-1A patent/BRPI0507437A/en not_active IP Right Cessation
- 2005-03-09 WO PCT/CA2005/000359 patent/WO2005085603A1/en active Application Filing
- 2005-03-09 EP EP05714600A patent/EP1723314A4/en not_active Withdrawn
- 2005-03-09 RU RU2010153056/28U patent/RU106307U8/en active
- 2005-03-09 US US10/598,739 patent/US20070177969A1/en not_active Abandoned
- 2005-03-09 MX MXPA06010263A patent/MXPA06010263A/en not_active Application Discontinuation
- 2005-09-03 UA UAA200610609A patent/UA86795C2/en unknown
-
2006
- 2006-09-10 IL IL177976A patent/IL177976A0/en unknown
- 2006-09-27 NO NO20064377A patent/NO20064377L/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| CA2461086A1 (en) | 2005-09-09 |
| NO20064377L (en) | 2006-11-07 |
| UA86795C2 (en) | 2009-05-25 |
| RU2006135344A (en) | 2008-04-20 |
| EP1723314A4 (en) | 2008-06-18 |
| IL177976A0 (en) | 2006-12-31 |
| MXPA06010263A (en) | 2007-01-19 |
| WO2005085603A1 (en) | 2005-09-15 |
| US20070177969A1 (en) | 2007-08-02 |
| BRPI0507437A (en) | 2007-07-24 |
| RU106307U1 (en) | 2011-07-10 |
| RU106307U8 (en) | 2012-02-20 |
| EP1723314A1 (en) | 2006-11-22 |
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| EEER | Examination request | ||
| MKLA | Lapsed |
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| MKLA | Lapsed |
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