CN105736944B - Utilize pressure energy of natural gas power generation and cold recoverable technique and device - Google Patents
Utilize pressure energy of natural gas power generation and cold recoverable technique and device Download PDFInfo
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- CN105736944B CN105736944B CN201610230461.7A CN201610230461A CN105736944B CN 105736944 B CN105736944 B CN 105736944B CN 201610230461 A CN201610230461 A CN 201610230461A CN 105736944 B CN105736944 B CN 105736944B
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- valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Pipeline Systems (AREA)
Abstract
Pressure energy of natural gas power generation and cold recoverable technique and device are utilized the present invention relates to a kind of.A large amount of pressure energy is released during high pressure pipe network downstream pipe network supply natural gas, this technique and device are generated electricity using the pressure energy of high-pressure natural gas, and recycle the cold energy of pressure reduction generation, improve the economic benefit of enterprise, the pollution problem that power plants generating electricity is brought is avoided while power generation, meets energy-saving and environment-friendly requirement.
Description
Technical field
The present invention relates to a kind of techniques and device to be generated electricity using pressure energy of natural gas and recycle cold energy, and in particular to one
Kind utilizes the power generation of expansion power generation unit and ice machine and recycles the technique and device of cold energy.
Background technology
It is the pressure that the pipe network gas of high pressure, sub-high pressure is decompressed to downstream pipe network that natural valve station owner, which will act on, add it is smelly simultaneously
It send to city medium pressure gas network.The huge overbottom pressure waste energy resource contained in gas distributing system, can be widely applied to power generation,
The multiple uses such as pressure regulation gas storage, refrigeration, production LNG.But since natural gas passes through multi-stage pressure regulating, voltage regulating station scattered distribution is right
Natural gas overbottom pressure utilizes and brings difficulty.
Natural gas pipe network pressure energy is generated electricity by expanding machine, have the characteristics that take up little area, feasibility it is high, be city gas
The first choice that pipe network pressure energy recycles.Meanwhile utilizing the station inside the differential pressure power generation supply station of natural gas before and after pressure regulation
On the one hand electric power needed for illumination, remote monitoring and winter heat tracing etc. can solve the realistic problem for being badly in need of solving at present in station,
On the other hand extra electric power can make grid-connected processing, have great importance.
Invention content
Pressure energy of natural gas power generation and cold recoverable technique are utilized the present invention relates to a kind of comprising：
(A) high pressure pipe network come normal-temperature natural-gas (0.9~4.0MPa of pressure) pass through primary heater, primary heater with
Hot water or conduction oil are as heating agent, and normal-temperature natural-gas is heated to 45-55 DEG C, preferably from about 50 DEG C wherein, subsequently into one
Expansion power generation unit is generated electricity using pressure energy driving expansion power generation unit, and temperature is down to the natural gas of room temperature (such as 0-25 DEG C)
By the bypass valve of ice machine and air temperature type heater, subsequently into secondary heater without being heated, into being pressed in downstream
Pipe network；
(B) normal-temperature natural-gas that high pressure pipe network comes passes through primary heater without being heated, into an expansion power generator
Group is generated electricity using pressure energy driving expansion power generation unit, and temperature is down to -35~-45 DEG C, normally about -40 DEG C, then enters one
The series pipe of valve and ice machine, or enter the series pipe recycling cold of a deck valve door and air temperature type heater, then
By secondary heater, room temperature (such as 0-25 DEG C) is heated to as heating agent using hot water or conduction oil and enters pressure pipe in downstream afterwards
Net；When there is ice-needs, the valve before ice machine is opened, and the valve before air temperature type heater closes valve, and expansion power generation unit goes out
The cryogenic natural gas of mouth is through ice machine recycling cold and ice making；Otherwise, the valve before air temperature type heater is opened, cryogenic natural gas
Through air temperature type heater rewarming to 0 DEG C or more (such as 0-5 DEG C)；
Wherein, both the above flow (A) and (B) can be switched over by the switch of valve on pipeline.
Natural gas high pressure pipe network described here generally refers to the natural gas under 0.9~4.0MPa of pressure, room temperature.
For the electricity that expansion power generation unit is sent out except standing for door in addition to itself use, extra electric energy carries out online processing.
Include using pressure energy of natural gas power generation and cold recoverable device, the device：Primary heater, the second heating
Device, expansion power generation unit, air temperature type heater, ice machine, seven deck valve doors；
Normal-temperature natural-gas from high pressure pipe network is connected to primary heater through pipeline, goes out after primary heater to reconnect swollen
The entrance of swollen generating set is then divided into three tunnels by the outlet of expansion power generation unit, and the first via is connected to valve one, the second tunnel according to
The entrance of secondary connecting valve two and air temperature type heater, third road are sequentially connected the entrance of valve three and ice machine, and valve one goes out
Mouth, the outlet of air temperature type heater and the outlet of ice machine are connected to secondary heater entrance, secondary heater outlet after converging
Connect downstream fecder system network；
It is provided with valve four on the heating agent entrance pipe of primary heater, valve five is provided on export pipeline；Valve four
When being opened with valve five, primary heater work, the natural gas into primary heater is heated；Valve four and valve five are closed
When, primary heater is stopped, and the natural gas into primary heater is not heated；
It is provided with valve six on the heating agent entrance pipe of secondary heater, valve seven is provided on export pipeline；Valve six
When being opened with valve seven, secondary heater work, the natural gas into secondary heater is heated；Valve six and valve seven are closed
When, secondary heater is stopped, and the natural gas into secondary heater is not heated.
Further, the expansion power generation unit includes mainly host, lubricating oil system and control and grid-connected system three parts.
Advantages of the present invention：
1, the requirement for meeting national energy conservation and emission reduction is equivalent to 0.39kg standard coals according to national regulation per 1kWh generated energy,
The discharge of 0.785kg carbon dioxide will be reduced per hour；Using high pressure pipe network natural gas top pressure power generation, carbon row can be effectively reduced
It puts；
2, remote station electricity needs is solved the problems, such as to sustainability；
3, the requirement for meeting environmental protection avoids the pollution problem that power plants generating electricity is brought while power generation.
4, it is designed by circuit, set of system can as needed for different purposes, it is convenient to switch over.
Description of the drawings
Fig. 1 is the process flow chart of the present invention.
Fig. 2 is the schematic diagram of flow of the present invention (A).
Fig. 3 is the schematic diagram of flow of the present invention (B).
Wherein, E-1, primary heater E-2, secondary heater E-3, air temperature type heater X-1, expansion power generation unit
X-2, ice machine V-1, one V-2 of valve, two V-3 of valve, three V-4 of valve, four V-5 of valve, five V-6 of valve, valve six
V-7, valve seven.
Specific implementation mode
The present invention relates to a kind of using pressure energy of natural gas power generation and cold recoverable technique, for recycling high pressure pipe network pressure
Power can and recycle the cold energy discharged in natural gas expansion process.
The technique that by the following specific examples further illustrate the invention.
Embodiment 1：
(A) as depicted in figs. 1 and 2, the normal-temperature natural-gas that high pressure pipe network comes passes through primary heater E-1, is added wherein
Heat, subsequently into an expansion power generation unit X-1, is generated electricity, temperature is down to 50 DEG C using pressure energy driving expansion power generation unit
The natural gas of room temperature passes through valve V-1, subsequently into secondary heater E-2 without being heated, into downstream fecder system network；
Primary heater E-1 is using hot water or conduction oil as heating agent, and heating agent enters primary heater through valve V-4, then
Go out primary heater, goes out device through valve V-5.
(B) as shown in figures 1 and 3, high pressure pipe network come normal-temperature natural-gas by primary heater E-1 without being heated,
Into an expansion power generation unit X-1, generated electricity using pressure energy driving expansion power generation unit X-1, temperature is down to about -40 DEG C；When
When having ice-needs, the valve V-3 before ice machine X-2 is opened, and the valve V-2 before air temperature type heater E-3 closes valve, expansion power generation
The cryogenic natural gas of the outlets unit X-1 is then heated by secondary heater E-2 through ice machine X-2 recycling colds and ice making
Enter downstream fecder system network after to room temperature；When not having ice-needs, the valve V-3 before refrigeration machine X-2 is closed, air temperature type heater
Valve V-2 before E-3 is opened, and the cryogenic natural gas after expansion then passes through secondary heater E-2 through air temperature type heater rewarming
Enter downstream fecder system network after being heated to room temperature；
Secondary heater E-2 is using hot water or conduction oil as heating agent, and heating agent enters secondary heater through valve V-6, then
Go out secondary heater, goes out device through valve V-7；
The above flow (A) and (B) can be switched over by the switch of valve on pipeline.
For the electricity that expansion power generation unit is sent out except standing for door in addition to itself use, extra electric energy carries out online processing.
The invention further relates to a kind of using pressure energy of natural gas power generation and cold recoverable device, as shown in Figure 1, the device
Including：Primary heater E-1, secondary heater E-2, expansion power generation unit X-1, air temperature type heater E-3, ice machine X-2, seven
Deck valve door V-1~V-7, expansion power generation unit X-1 include mainly host, lubricating oil system and control and grid-connected system three parts；
Normal-temperature natural-gas from high pressure pipe network is connected to primary heater E-1 through pipeline, and first goes out after heater E-1 again
The entrance for connecting expansion power generation unit X-1, is then divided into three tunnels, the first via is connected to valve by the outlet of expansion power generation unit X-1
One V-1 of door, the second tunnel are sequentially connected the entrance of two V-2 of valve and air temperature type heater E-3, and third road is sequentially connected three V- of valve
The entrance of 3 and ice machine X-2, after the outlets one V-1 of valve, the outlet of air temperature type heater E-3 and the outlet of ice machine X-2 converge
It is connected to secondary heater E-2 entrances, secondary heater E-2 outlet connection downstream fecder system networks；
It is provided with four V-4 of valve on the heating agent entrance pipe of primary heater E-1, five V- of valve is provided on export pipeline
5；When four V-4 of valve and five V-5 of valve are opened, primary heater E-1 work, the natural gas into primary heater E-1 is added
Heat；When four V-4 of valve and five V-5 of valve are closed, primary heater E-1 is stopped, into the natural gas of primary heater E-1
It is not heated；
It is provided with six V-6 of valve on the heating agent entrance pipe of secondary heater E-2, seven V- of valve is provided on export pipeline
7；When six V-6 of valve and seven V-7 of valve are opened, secondary heater E-2 work, the natural gas into secondary heater E-2 is added
Heat；When six V-6 of valve and seven V-7 of valve are closed, secondary heater E-2 is stopped, into the natural gas of secondary heater E-2
It is not heated.
Claims (5)
1. a kind of utilizing pressure energy of natural gas power generation and cold recoverable technique comprising：
(A) normal-temperature natural-gas that high pressure pipe network comes passes through primary heater, primary heater using hot water or conduction oil as heating agent,
Normal-temperature natural-gas is heated to 45-55 DEG C wherein, and subsequently into an expansion power generation unit, expansion hair is driven using pressure energy
Electric unit generation, the natural gas that temperature is down to room temperature passes through the bypass valve of ice machine and air temperature type heater, subsequently into the
Two heaters are without being heated, into downstream fecder system network；
(B) normal-temperature natural-gas that high pressure pipe network comes passes through primary heater without being heated, into an expansion power generation unit, profit
With pressure energy driving expansion power generation unit power generation, temperature is down to -35~-45 DEG C, then enters the string of a deck valve door and ice machine
Union road, or enter the series pipe recycling cold of a deck valve door and air temperature type heater, then pass through secondary heater, with
Hot water or conduction oil enter downstream fecder system network after being heated to room temperature as heating agent；When there is ice-needs, before ice machine
Valve is opened, and the valve before air temperature type heater closes valve, and the cryogenic natural gas of expansion power generation unit outlet is cold through ice machine recycling
Measure simultaneously ice making；Otherwise, the valve before air temperature type heater is opened, and cryogenic natural gas is through air temperature type heater rewarming to 0 DEG C or more；
Wherein, both the above flow (A) and (B) can be switched over by the switch of valve on pipeline.
2. technique according to claim 1, wherein room temperature is 0-25 DEG C.
3. technique according to claim 1, wherein the natural gas high pressure pipe network be 0.9~4.0MPa of finger pressure, often
Natural gas under temperature.
4. including using pressure energy of natural gas power generation and cold recoverable device, the device：Primary heater, secondary heater,
Expansion power generation unit, air temperature type heater, ice machine, seven deck valve doors；
Normal-temperature natural-gas from high pressure pipe network is connected to primary heater through pipeline, and expansion hair is reconnected after going out primary heater
The entrance of motor group is then divided into three tunnels by the outlet of expansion power generation unit, and the first via is connected to valve one, and the second tunnel connects successively
The entrance of valve two and air temperature type heater is connect, third road is sequentially connected the entrance of valve three and ice machine, the outlet of valve one, sky
The outlet of warm formula heater and the outlet of ice machine are connected to secondary heater entrance after converging, under secondary heater outlet connection
Swim fecder system network；
It is provided with valve four on the heating agent entrance pipe of primary heater, valve five is provided on export pipeline；Valve four and valve
When door five is opened, primary heater work, the natural gas into primary heater is heated；When valve four and valve five are closed,
Primary heater is stopped, and the natural gas into primary heater is not heated；
It is provided with valve six on the heating agent entrance pipe of secondary heater, valve seven is provided on export pipeline；Valve six and valve
When door seven is opened, secondary heater work, the natural gas into secondary heater is heated；When valve six and valve seven are closed,
Secondary heater is stopped, and the natural gas into secondary heater is not heated.
5. device according to claim 4, wherein the expansion power generation unit mainly include host, lubricating oil system and
Control and grid-connected system three parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610230461.7A CN105736944B (en) | 2016-04-14 | 2016-04-14 | Utilize pressure energy of natural gas power generation and cold recoverable technique and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610230461.7A CN105736944B (en) | 2016-04-14 | 2016-04-14 | Utilize pressure energy of natural gas power generation and cold recoverable technique and device |
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| CN105736944A CN105736944A (en) | 2016-07-06 |
| CN105736944B true CN105736944B (en) | 2018-07-24 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106437911B (en) * | 2016-08-29 | 2017-11-10 | 思安新能源股份有限公司 | A kind of gas distributing system overbottom pressure comprehensive generating system |
| CN106678545A (en) * | 2017-01-12 | 2017-05-17 | 辽宁石油化工大学 | Natural gas peak load regulating method with combined cooling heating and power supplying function |
| CN109812307B (en) * | 2018-12-14 | 2022-04-12 | 浙江理工大学 | Natural gas pressure energy recovery device and method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1310644A1 (en) * | 2000-08-16 | 2003-05-14 | Tuzova, Alla Pavlovna | Method for recovering the energy of gas expansion and a recovery device for carrying out said method |
| US7278264B2 (en) * | 2005-03-31 | 2007-10-09 | Air Products And Chemicals, Inc. | Process to convert low grade heat source into power using dense fluid expander |
| CN202209192U (en) * | 2011-08-30 | 2012-05-02 | 上海申能临港燃机发电有限公司 | Natural gas differential pressure power generation device |
| CN102563958A (en) * | 2011-12-13 | 2012-07-11 | 华南理工大学 | Method for generating power and making ice by aid of pressure energy of natural gas of pipe network and device |
| CN104929776A (en) * | 2015-05-29 | 2015-09-23 | 浙江浙能节能科技有限公司 | Combined cycle power generation system utilizing gas and natural gas pipe network pressure energy |
| CN105041395A (en) * | 2015-08-11 | 2015-11-11 | 浙江浙能节能科技有限公司 | System for recovering and comprehensively utilizing pressure energy of natural gas pipeline network |
| CN105114131A (en) * | 2015-08-31 | 2015-12-02 | 北京市燃气集团有限责任公司 | Integrated device capable of achieving expansion power generation and compression refrigeration through natural gas pressure |
| CN205579154U (en) * | 2016-04-14 | 2016-09-14 | 新地能源工程技术有限公司 | Utilize device of electricity generation of natural gas pressure energy and cold energy recovery |
-
2016
- 2016-04-14 CN CN201610230461.7A patent/CN105736944B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1310644A1 (en) * | 2000-08-16 | 2003-05-14 | Tuzova, Alla Pavlovna | Method for recovering the energy of gas expansion and a recovery device for carrying out said method |
| US7278264B2 (en) * | 2005-03-31 | 2007-10-09 | Air Products And Chemicals, Inc. | Process to convert low grade heat source into power using dense fluid expander |
| CN202209192U (en) * | 2011-08-30 | 2012-05-02 | 上海申能临港燃机发电有限公司 | Natural gas differential pressure power generation device |
| CN102563958A (en) * | 2011-12-13 | 2012-07-11 | 华南理工大学 | Method for generating power and making ice by aid of pressure energy of natural gas of pipe network and device |
| CN104929776A (en) * | 2015-05-29 | 2015-09-23 | 浙江浙能节能科技有限公司 | Combined cycle power generation system utilizing gas and natural gas pipe network pressure energy |
| CN105041395A (en) * | 2015-08-11 | 2015-11-11 | 浙江浙能节能科技有限公司 | System for recovering and comprehensively utilizing pressure energy of natural gas pipeline network |
| CN105114131A (en) * | 2015-08-31 | 2015-12-02 | 北京市燃气集团有限责任公司 | Integrated device capable of achieving expansion power generation and compression refrigeration through natural gas pressure |
| CN205579154U (en) * | 2016-04-14 | 2016-09-14 | 新地能源工程技术有限公司 | Utilize device of electricity generation of natural gas pressure energy and cold energy recovery |
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