CN106930793A - Using the refrigeration system of pressure energy of natural gas - Google Patents
Using the refrigeration system of pressure energy of natural gas Download PDFInfo
- Publication number
- CN106930793A CN106930793A CN201710222576.6A CN201710222576A CN106930793A CN 106930793 A CN106930793 A CN 106930793A CN 201710222576 A CN201710222576 A CN 201710222576A CN 106930793 A CN106930793 A CN 106930793A
- Authority
- CN
- China
- Prior art keywords
- natural gas
- gas
- pressure
- refrigeration system
- outlet
- 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
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 383
- 239000003345 natural gas Substances 0.000 title claims abstract description 191
- 238000005057 refrigeration Methods 0.000 title claims abstract description 34
- 239000007789 gas Substances 0.000 claims abstract description 97
- 230000005611 electricity Effects 0.000 claims abstract description 16
- 230000007423 decrease Effects 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims description 16
- 230000009467 reduction Effects 0.000 claims description 11
- 239000002737 fuel gas Substances 0.000 claims description 4
- 239000000567 combustion gas Substances 0.000 claims description 2
- 230000008676 import Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004210 cathodic protection Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/12—Cooling of plants
- F02C7/16—Cooling of plants characterised by cooling medium
- F02C7/18—Cooling of plants characterised by cooling medium the medium being gaseous, e.g. air
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
This application provides a kind of refrigeration system of utilization pressure energy of natural gas.The refrigeration system includes TRT and First Heat Exchanger, and TRT is connected with high-pressure natural gas pipeline, and TRT is generated electricity using high-pressure natural gas, the natural gas lowered the temperature and be depressured；First Heat Exchanger includes the first hot gas inlet, the first cold air inlet, the first heat outlet and the first cold air outlet, first hot gas inlet is connected with air source device, first cold air inlet is connected with the gas vent of TRT, first heat outlet is connected with the entrance of low pressure natural gas source device, the combustion-supporting gas inlet communication of the first cold air outlet and combustor, the natural gas that First Heat Exchanger is used for the decrease temperature and pressure that the air in air source device is exported with generator is exchanged heat.Refrigeration system in the application can not only effectively using the pressure difference energy of natural gas, moreover it is possible to lifts the power output of gas engine, reduces high-pressure natural gas delivery temperature, it is ensured that the delivery safety of high-pressure natural gas.
Description
Technical field
The application is related to energy field, in particular to a kind of refrigeration system of utilization pressure energy of natural gas.
Background technology
Natural gas is the widely used a kind of clean energy resource in the whole world at present, to meet long distance delivery natural gas the need for,
Needs add high pressure, for example, one line of transfering natural gas from the west to the east, the gas transmission line pressure of two wires are respectively 4.0MPa and 10MPa, such high pressure
Natural gas transportation receive door station to various regions, be typically necessary according to user require be depressured at natural gas pressure regulating station.For
For pipeline network of fuel gas in city, middle pressure scope is typically reduced to.
For example, the year gas supply capacity of one line of transfering natural gas from the west to the east has exceeded 120 billion cubic meters, supply in the year of the second west to east gas pipeline project line design
Gas ability is 300 billion cubic meters, if not considering natural due to what is caused due to supplement pressure in high-pressure natural gas course of conveying
Gas loses, and a line of only transferring natural gas from the west to the east adjusts 1.6MPa this pressure rating i.e. recyclable 80,200,000,000 kilowatts by 4.0MPa, two wires by
It is bigger that 10MPa is transferred to 4MPa this pressure rating recoverable energy.But at present, the corresponding pressure of above-mentioned natural gas pressure difference
Can not by effective recycling.
The content of the invention
The main purpose of the application is to provide a kind of refrigeration system of utilization pressure energy of natural gas, to solve prior art
In can not effectively using pressure energy of natural gas problem.
To achieve these goals, according to the one side of the application, there is provided a kind of system of utilization pressure energy of natural gas
Cooling system, the refrigeration system includes：TRT, is connected with high-pressure natural gas pipeline, and above-mentioned TRT is natural using high pressure
Gas generates electricity, the natural gas lowered the temperature and be depressured；At least one First Heat Exchanger, each above-mentioned First Heat Exchanger includes the first hot gas
Entrance, the first cold air inlet, the first heat outlet and the first cold air outlet, above-mentioned first hot gas inlet connect with air source device
Logical, above-mentioned first cold air inlet is connected with the gas vent of above-mentioned TRT, above-mentioned first heat outlet and low pressure natural gas
The combustion-supporting gas inlet communication of the entrance connection of source device, above-mentioned first cold air outlet and combustor, each above-mentioned First Heat Exchanger is used
Exchanged heat in the natural gas of the decrease temperature and pressure that the air in above-mentioned air source device is exported with generator.
Further, above-mentioned refrigeration system also includes：At least one supercharging device, the entrance of each above-mentioned supercharging device with it is upper
The outlet of low pressure natural gas source device, the outlet of each above-mentioned supercharging device and above-mentioned high-pressure natural gas pipeline connection are stated, on
Supercharging device is stated to be pressurized for the low pressure natural gas to the output of above-mentioned low pressure natural gas source device.
Further, above-mentioned supercharging device includes：Compressor, the entrance of above-mentioned compressor sets with above-mentioned low pressure natural gas source
Standby outlet, for compressing above-mentioned low pressure natural gas, obtains high-pressure natural gas.
Further, each above-mentioned supercharging device also includes：Cooler, the outlet with above-mentioned compressor, for
The above-mentioned high-pressure natural gas for stating compressor output are lowered the temperature.
Further, above-mentioned cooler is air cooler.
Further, above-mentioned high-pressure natural gas pipeline includes：First transportation section, the outlet with above-mentioned cooler；The
Two heat exchangers, including the second cold air inlet, the second hot gas inlet, the second cold air outlet and the second heat outlet, above-mentioned second is cold
Gas entrance is connected with the gas vent of above-mentioned TRT, and above-mentioned second hot gas inlet is cold with above-mentioned by above-mentioned first transportation section
But the outlet of device, above-mentioned second heat outlet is connected with the entrance of above-mentioned low pressure natural gas source device, above-mentioned second heat exchange
Device is used to be exchanged heat the high-pressure natural gas that the above-mentioned natural gas of decrease temperature and pressure is exported with above-mentioned cooler；Second transportation section,
It is connected with above-mentioned second cold air outlet.
Further, gas access of above-mentioned first transportation section also with above-mentioned TRT connects.
Further, above-mentioned TRT includes：Expanding machine, is connected with above-mentioned high-pressure natural gas pipeline；Reduction gear box,
It is connected with above-mentioned expander shaft；Generator, is connected with above-mentioned reduction gear box.
Further, above-mentioned combustor is gas turbine.
Further, it is above-mentioned to help fuel gas inlet for air intlet.
Using the technical scheme of the application, on the one hand, generated electricity using the pressure difference of natural gas；On the other hand, and will hair
The combustion-supporting gas that the cryogenic natural gas produced after electricity are used to treat into gas engine is lowered the temperature, into the combustion-supporting gas (example of gas engine
Such as air) temperature it is lower, the power of its output is higher, therefore, the refrigeration system in the application can not only be utilized effectively
The pressure difference energy of natural gas, moreover it is possible to lift the power output of gas engine, reduces high-pressure natural gas delivery temperature, it is ensured that high-pressure natural gas
Delivery safety.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrated for explaining the application, does not constitute the improper restriction to the application.In the accompanying drawings：
Fig. 1 shows the structural representation of the refrigeration system of the utilization pressure energy of natural gas that a kind of embodiment of the application is provided
Figure；And
Fig. 2 shows that the structure of the refrigeration system of the utilization pressure energy of natural gas that another embodiment of the application is provided is shown
It is intended to.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
1st, low pressure natural gas source device；2nd, supercharging device；3rd, TRT；4th, high-pressure natural gas pipeline；5th, the first heat exchange
Device；6th, combustor；7th, air source device；21st, compressor；22nd, cooler；41st, the first transportation section；42nd, the second heat exchanger；43、
Second transportation section.
Specific embodiment
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
Be also intended to include plural form, additionally, it should be understood that, when in this manual use term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, pressure difference energy can not be well utilized in the prior art, in order to solve skill as above
Art problem, present applicant proposes a kind of refrigeration system of utilization pressure energy of natural gas.
In a kind of typical implementation method of the application, there is provided a kind of refrigeration system of utilization pressure energy of natural gas, such as
Shown in Fig. 1 and Fig. 2, the system includes the First Heat Exchanger 5 of TRT 3 and at least one, wherein, TRT 3 and high pressure day
Right air pipe 4 is connected, and above-mentioned TRT 3 utilizes the high-pressure natural gas sent into by high-pressure natural gas pipeline 4 in it to generate electricity, and high
Pressure natural gas is changed into the natural gas lowered the temperature and be depressured；Each First Heat Exchanger 5 includes the first hot gas inlet, the first cold air inlet, the
One heat outlet and the first cold air outlet, above-mentioned first hot gas inlet are connected with air source device 7, above-mentioned first cold air inlet with
The gas vent connection of TRT 3, that is to say, that at least a portion for the natural gas exported by generator enters as low-temperature receiver
To in First Heat Exchanger, above-mentioned first heat outlet is connected with the entrance of low pressure natural gas source device 1, above-mentioned first cold air outlet
With the combustion-supporting gas inlet communication of combustor 6, above-mentioned First Heat Exchanger 5 be used for by the air in above-mentioned air source device 7 with generate electricity
The natural gas of decrease temperature and pressure of machine output is exchanged heat, wherein, air as thermal source, the natural gas of decrease temperature and pressure as low-temperature receiver,
The air that the two heat exchange is lowered the temperature and the natural gas for heating up.
Using the technical scheme of the application, on the one hand, generated electricity using the pressure difference of natural gas；On the other hand, and will hair
The cryogenic natural gas produced after electricity are used for the combustion-supporting gas treated into gas engine and are lowered the temperature, into gas engine combustion-supporting gas for example
The temperature of air is lower, and the power of its output is higher, therefore, the refrigeration system in the application can not only effectively using natural
The pressure difference energy of gas, moreover it is possible to lift the power output of gas engine, reduces high-pressure natural gas delivery temperature, it is ensured that high-pressure natural gas it is defeated
Send safety.
In a kind of embodiment of the application, as shown in Figures 1 and 2, also include at least in the refrigeration and generation system of the application
One supercharging device 2, the outlet of the entrance of each supercharging device 2 and above-mentioned low pressure natural gas source device 1, each above-mentioned supercharging dress
The outlet for putting 2 is connected with above-mentioned high-pressure natural gas pipeline 4, and each above-mentioned supercharging device 2 is used for above-mentioned low pressure natural gas source device 1
The low pressure natural gas of output are pressurized.Supercharging by supercharging device to low pressure natural gas so that low pressure natural gas are changed into high
Pressure natural gas, and then further meet the long distance delivery requirement of natural gas.
In order to low pressure natural gas are changed into high-pressure natural gas in a straightforward manner, in a kind of embodiment of the application, such as
Shown in Fig. 1, each above-mentioned supercharging device 2 includes compressor 21, the entrance of above-mentioned compressor 21 and above-mentioned low pressure natural gas source device 1
Outlet, for compressing above-mentioned low pressure natural gas, obtain high-pressure natural gas.
In another embodiment of the application, as shown in figure 1, each above-mentioned supercharging device 2 also includes cooler 22, the cooling
The outlet of device 22 and above-mentioned compressor 21, for lowering the temperature to the above-mentioned high-pressure natural gas that above-mentioned compressor 21 is exported.
Because compressor by low pressure natural gas while high-pressure natural gas are changed into, the temperature of natural gas is increased, and natural gas
The maximum temperature for being delivered to initial station is usually no more than 50 DEG C, and this is mainly intensity to pipeline, inside and outside coating and cathodic protection effect
Fruit has an impact.So, natural gas is lowered the temperature using cooler, pipeline, inside and outside coating and negative electrode are further protected, protect
Transporting safely for natural gas has been demonstrate,proved, the life-span of natural gas transport equipment has been extended.
Cooler in the application can use any cooler of the prior art, and those skilled in the art can be with
Suitable cooler is selected to cool down the natural gas by compressor according to actual conditions.In a kind of specific embodiment,
The cooler of the application is air cooler.
In order to further reduce the temperature of high-pressure natural gas, and then ensure transporting safely for natural gas, one kind of the application
In embodiment, as shown in Figures 1 and 2, above-mentioned high-pressure natural gas pipeline 4 includes the first transportation section 41, the second heat exchanger 42 and the
Two transportation sections 43, wherein, the outlet of the first transportation section 41 and above-mentioned cooler 22, for transporting the height exported by cooler
Pressure natural gas；Second heat exchanger 42 includes that the second cold air inlet, the second hot gas inlet, the second cold air outlet go out with the second hot gas
Mouthful, above-mentioned second cold air inlet is connected with the gas vent of above-mentioned TRT 3, that is to say, that gone out by the gas of TRT
A natural gas part for the low temperature of mouthful output is entered into First Heat Exchanger as low-temperature receiver, and another part enters into the as low-temperature receiver
In two heat exchangers, above-mentioned second hot gas inlet passes through the outlet of the first transportation section 41 and above-mentioned cooler 22, above-mentioned second
Heat outlet is connected with the entrance of above-mentioned low pressure natural gas source device 1, and above-mentioned second heat exchanger 42 is used for decrease temperature and pressure
State the high-pressure natural gas that natural gas exports with cooler 22 to be exchanged heat, the high-pressure natural gas lowered the temperature are natural with what is heated up
Gas, the i.e. heat exchanger are disposed to further reduce the temperature of high-temperature natural gas, and then are further ensured that the peace of natural gas
It is for the national games defeated, also, the cold air inlet of second heat exchanger connects with the gas vent of TRT, that is to say, that filled using generating electricity
Put the cryogenic natural gas for obtaining to lower the temperature high-pressure natural gas, further the pressure difference to natural gas can carry out effective utilization；
Second transportation section 43 is connected with above-mentioned second cold air outlet, for transporting the cryogenic high pressure natural gas for obtaining.
In order that obtaining the high-pressure natural gas exported by cooler is obtained in that more preferable cooling-down effect, one kind of the application is real
Apply in example, above-mentioned second cold air inlet is not only connected with the gas vent of TRT, also store setting for cold source gas with other
Standby connection, so can be with more efficient and more high-pressure natural gas are lowered the temperature.
In a kind of embodiment in the application, as shown in figure 1, above-mentioned first transportation section 41 also with above-mentioned TRT 3
Gas access connects.
The TRT of the application can be any TRT of the prior art, and those skilled in the art can be with
Suitable TRT is selected according to actual conditions.
In a kind of embodiment of the application, above-mentioned TRT includes expanding machine, reduction gear box and reduction gear box, its
In, expanding machine is connected with above-mentioned high-pressure natural gas pipeline；Reduction gear box is connected with above-mentioned expander shaft；Generator subtracts with above-mentioned
Fast gear-box connection.The partial high pressure natural gas for exporting output by cooler is led to by entering expanding machine after pressure regulator valve voltage stabilizing
Overpressure difference promotes expanding machine impeller rotation (most reaching 40000RPM at a high speed) at a high speed, and expander shaft connection reduction gear box is decelerated to
1500RPM drives the electrical power generators being attached thereto, and the natural gas temperature after expanded machine is reduced between 20~-20 DEG C, drops
Natural gas after temperature exchanges heat with air and/or high-pressure natural gas, and temperature is increased to more than 10~30 DEG C.
Combustor in the application can be any combustor of the prior art, and those skilled in the art can be with root
Suitable combustor is selected according to actual conditions.
In a kind of specific embodiment, in order to better profit from the pressure difference energy of natural gas, above-mentioned combustor is gas turbine,
Exerting oneself for gas turbine is closely related with combustion-supporting gas (usually air) intake air temperature with efficiency, with intake air temperature reduction unit
Enter the rising such as density and mass flow, the power output of generator is also bigger, efficiency also on increase.Gas turbine
Exert oneself and be inversely proportional with the intake air temperature of combustion-supporting gas, intake air temperature often reduces by 1 DEG C of increase by 1% of exerting oneself.The specified work of gas turbine
Condition is formulated under iso standard, i.e.,：15 DEG C of intake air temperature, relative humidity 60%.And in the most area of China, especially
It is south, such as Chongqing, summer mean daily temperature is higher, reaches as high as more than 40 DEG C, and now exactly peak times of power consumption, combustion gas
Turbine needs operation peak regulation with all strength.Intake air temperature so high makes the power of gas turbine decline to a great extent, and efficiency is also reduced.Cause
This, the cooling to the combustion-supporting gas of air inlet is just particularly important.
In a kind of embodiment of the application, above-mentioned to help fuel gas inlet be sky for the combustion-supporting gas in air intlet, i.e. gas engine
Gas.Burning cost and convenient material drawing can so be reduced.But, the combustion-supporting gas in the application is not limited to air, can be it
His gas such as oxygen etc., those skilled in the art can select suitable gas as combustion-supporting gas according to actual conditions.
Alternatively, it is also possible to carry out expansion power generation using standby supercharging device, using natural air cooling high pressure day after cooling
The air of right gas and/or combustor to be entered.It is specific as shown in Fig. 2 the refrigeration system includes two supercharging devices and two not
Same high-pressure natural gas pipeline 4, one of supercharging device is connected with TRT, and the supercharging device is referred to as standby supercharging dress
Put, another is referred to as work supercharging device, compressor 21, cooler 22, TRT one end are included in each supercharging device
Connected with standby supercharging device by a high-pressure natural gas pipeline 4, the other end is connected with low pressure natural gas source device 1, this two
Individual supercharging device can share a low pressure natural gas source device 1, it is also possible to connect with a low pressure natural gas source device 1 respectively
It is logical.
And the system includes two First Heat Exchangers 5, the entrance of an outlet for First Heat Exchanger 5 and standby supercharging device
Connection, the First Heat Exchanger 5 is referred to as standby First Heat Exchanger, and another First Heat Exchanger 5 is connected with the entrance of work supercharging device,
The First Heat Exchanger 5 is referred to as work First Heat Exchanger.First cold air inlet of the two First Heat Exchangers 5 with TRT 3
Gas vent is connected, and the first hot gas inlet of the two is connected with air source device 7, specifically, can be with as shown in Fig. 2 respectively
Connected with an air source device 7, it is also possible to connected with an air source device 7.
The high-pressure natural gas pipeline 4 connected with standby supercharging device in the system is referred to as standby high-pressure natural gas pipeline, with work
The high-pressure natural gas pipeline 4 for making supercharging device connection is referred to as work high-pressure natural gas pipeline, and work high-pressure natural gas pipeline includes first
Transportation section, second heat exchanger 42 and the second transportation section 43, and second heat exchanger 42 also with the gas vent of TRT 3
Connection.
In said system, in standby supercharging device, compressor 21 and cooling of the low pressure natural gas by standby supercharging device
Enter in TRT 3 after device 22 and generate electricity, in the supercharging device that works, low pressure natural gas are by after compressor 21 and cooler 22
It is directly entered in the second heat exchanger 42.
It is utilized in TRT 3 after the natural gas power of power generation part and is changed into the natural gas of decrease temperature and pressure, this part
Natural gas is divided into three parts, and Part I is respectively enterd in standby First Heat Exchanger and work First Heat Exchanger with Part II, treated
Air into combustor is lowered the temperature, and Part III is entered into the second heat exchanger 42, with high-temperature natural gas exchange heat into
And it is lowered the temperature.
In order that obtaining those skilled in the art can clearly understand the technical scheme of the application, below with reference to tool
The embodiment of body illustrates the technical scheme of the application.
Embodiment 1
The pressure difference of natural gas can be utilized using the refrigeration system shown in Fig. 1, wherein, cooler is air cooler, hair
Electric installation includes expanding machine, reduction gear box, generator and petrol station, and high-pressure natural gas pipeline includes that the first transportation section, second are changed
Hot device and the second transportation section, and expanding machine the gas access outlet that passes through the first transportation section and cooler.Combustor is
Gas turbine, and combustion-supporting gas is air.
Low pressure natural gas 6Mpa, 36 DEG C (400,000 mark sides/day) in low pressure natural gas source device initially enter compressor, pressure
10Mpa, 87 DEG C of high-pressure natural gas are obtained after contracting, high-pressure natural gas are lowered the temperature into air cooler, after being cooled to 50 DEG C, partial high pressure
Natural gas is entered into the second heat exchanger and exchanged heat with cold source gas, and the high-pressure natural gas after cooling are directly transported away；Separately
The high-pressure natural gas of a part enter expanding machine, and generating 500KW goes out expanding machine, and the natural gas temperature after expansion is down to 18 from 50 DEG C
DEG C, pressure is down to 6.05Mpa by 10Mpa.
Cryogenic natural gas after cooling are divided into two parts, and a part of cryogenic natural gas enter First Heat Exchanger and air is dropped
Temperature, the temperature of cryogenic natural gas rises to 28 DEG C from 18 DEG C, and the temperature of high temperature air is down to 20 DEG C from 35 DEG C, and the air after cooling enters
Enter in gas turbine with fuel mixed combustion, the natural gas of intensification entered back into compressor inlet gas distributing system；Another part
Cryogenic natural gas enter for cooling down the high-pressure natural gas exported by air cooler in the second heat exchanger, the temperature of cryogenic natural gas from
18 DEG C rise to 39 DEG C, and enter back into the inlet natural gas pipe network of compressor, and the temperature of high-pressure natural gas is down to 40 DEG C from 50 DEG C
And meet movement requirement.
Embodiment 2
The pressure difference of natural gas can be utilized using the refrigeration system shown in Fig. 2, wherein, each cooler is air cooling
Device, TRT includes expanding machine, reduction gear box, generator and petrol station, the high-pressure natural gas connected with work supercharging device
Pipeline includes the first transportation section, the second heat exchanger and the second transportation section, and the gas access of expanding machine connects with the outlet of cooler
It is logical.Combustor is gas turbine, and combustion-supporting gas is air.The gas turbine connected with standby First Heat Exchanger is standby gas turbine,
The gas turbine connected with work First Heat Exchanger is work gas turbine, and it is above right that the annexation of specific structure may refer to
The description of Fig. 2.
Low pressure natural gas 6Mpa, 36 DEG C (400,000 mark sides/day) in low pressure natural gas source device enter standby supercharging device
In, by obtaining 10Mpa, 87 DEG C of high-pressure natural gas after compressor compresses, high-pressure natural gas are lowered the temperature into air cooler, are cooled to
Generating in expanding machine is fully entered after 50 DEG C, generating 500KW goes out expanding machine, and the natural gas temperature after expansion is down to 18 from 50 DEG C
DEG C, pressure is down to 6.05Mpa by 10Mpa.And then thickness cryogenic natural gas of lowering the temperature are obtained, this portion of natural gas is divided into three parts,
And during two parts therein respectively enter standby First Heat Exchanger and work First Heat Exchanger, and treat that the air into steam turbine is changed
Heat, the temperature of the cryogenic natural gas after heat exchange rises to 28 DEG C from 18 DEG C, and the temperature of high temperature air is down to 20 DEG C, after cooling from 35 DEG C
Air correspond to enter in standby gas turbine and work gas turbine respectively and enter standby with fuel mixed combustion, the natural gas of intensification
With in the compressor inlet gas distributing system in supercharging device, Part III cryogenic natural gas enter in the second heat exchanger.
Low pressure natural gas 6Mpa, 36 DEG C (400,000 mark sides/day) in low pressure natural gas source device enter work supercharging device,
By obtaining 10Mpa, 87 DEG C of high-pressure natural gas after the compressor compresses in the supercharging device that works, high-pressure natural gas enter work
Air cooler cooling in supercharging device, natural gas after cooling enters in the second heat exchanger by the first transportation section, and enters the
Cryogenic natural gas heat exchange in two heat exchangers, the temperature of cryogenic natural gas rises to 39 DEG C from 18 DEG C, and enters back into standby supercharging dress
In the inlet natural gas pipe network of the compressor put, the temperature of high-pressure natural gas is down to 40 DEG C from 50 DEG C and meets movement requirement.
The pressure difference that two above-mentioned refrigeration systems are not only effectively utilized natural gas is generated electricity, and is also fully utilized by natural
Cold energy produced by controlled atmosphere pressure electricity, the produced cold energy that will generate electricity is used for the cooling to natural gas and air, improves
The efficiency of gas engine and meet the requirement of high-pressure natural gas safe transport, and reduce in supercharging device to the investment of cooler and
Energy consumption.
As can be seen from the above description, the application the above embodiments realize following technique effect：
The refrigeration system of the application, on the one hand, generated electricity using the pressure difference of natural gas；On the other hand, and by after generating
The combustion-supporting gas that the cryogenic natural gas of generation are used to treat into gas engine is lowered the temperature, and the combustion-supporting gas into gas engine is (such as empty
Gas) temperature it is lower, the power of its output is higher, therefore, refrigeration system in the application can not only effectively using natural
The pressure difference energy of gas, moreover it is possible to lift the power output of gas engine, reduces high-pressure natural gas delivery temperature, it is ensured that high-pressure natural gas it is defeated
Send safety.
The preferred embodiment of the application is the foregoing is only, the application is not limited to, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of refrigeration system of utilization pressure energy of natural gas, it is characterised in that the refrigeration system includes：
TRT (3), is connected with high-pressure natural gas pipeline (4), and the TRT (3) is generated electricity using high-pressure natural gas, is obtained
To cooling and the natural gas of step-down；And
At least one First Heat Exchanger (5), each First Heat Exchanger (5) includes the first hot gas inlet, the first cold air inlet,
One heat outlet and the first cold air outlet, first hot gas inlet are connected with air source device (7), first cold air inlet
Gas vent with the TRT (3) is connected, and first heat outlet connects with the entrance of low pressure natural gas source device (1)
It is logical, the combustion-supporting gas inlet communication of first cold air outlet and combustor (6), each First Heat Exchanger (5) is for by described in
The natural gas of the decrease temperature and pressure that the air in air source device (7) is exported with generator is exchanged heat.
2. refrigeration system according to claim 1, it is characterised in that the refrigeration system also includes：
At least one supercharging device (2), the entrance of each supercharging device (2) and going out for low pressure natural gas source device (1)
Mouth connection, the outlet of each supercharging device (2) is connected with the high-pressure natural gas pipeline (4), and each supercharging device (2) is used
It is pressurized in the low pressure natural gas exported to the low pressure natural gas source device (1).
3. refrigeration system according to claim 2, it is characterised in that each supercharging device (2) includes：
Compressor (21), the outlet of the entrance of the compressor (21) and the low pressure natural gas source device (1), for pressing
Contract the low pressure natural gas, obtains high-pressure natural gas.
4. refrigeration system according to claim 3, it is characterised in that each supercharging device (2) also includes：
Cooler (22), the outlet with the compressor (21), for the high pressure exported to the compressor (21)
Natural gas is lowered the temperature.
5. refrigeration system according to claim 4, it is characterised in that the cooler (22) is air cooler.
6. refrigeration system according to claim 4, it is characterised in that the high-pressure natural gas pipeline (4) includes：
First transportation section (41), the outlet with the cooler (22)；
Second heat exchanger (42), including the second cold air inlet, the second hot gas inlet, the second cold air outlet and the second heat outlet,
Second cold air inlet is connected with the gas vent of the TRT (3), and second hot gas inlet passes through described first
The outlet of transportation section (41) and the cooler (22), second heat outlet and the low pressure natural gas source device
(1) entrance connection, second heat exchanger (42) is for defeated with the cooler (22) by the natural gas of decrease temperature and pressure
The high-pressure natural gas for going out are exchanged heat；And
Second transportation section (43), is connected with second cold air outlet.
7. refrigeration system according to claim 6, it is characterised in that first transportation section (41) also with the dress that generates electricity
Put the gas access connection of (3).
8. refrigeration system according to claim 1, it is characterised in that the TRT (3) includes：
Expanding machine, is connected with the high-pressure natural gas pipeline (4)；
Reduction gear box, is connected with the expander shaft；And
Generator, is connected with the reduction gear box.
9. refrigeration system according to any one of claim 1 to 8, it is characterised in that the combustor (6) is combustion gas wheel
Machine.
10. refrigeration system according to any one of claim 1 to 8, it is characterised in that described to help fuel gas inlet be air
Import.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710222576.6A CN106930793A (en) | 2017-04-06 | 2017-04-06 | Using the refrigeration system of pressure energy of natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710222576.6A CN106930793A (en) | 2017-04-06 | 2017-04-06 | Using the refrigeration system of pressure energy of natural gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106930793A true CN106930793A (en) | 2017-07-07 |
Family
ID=59425656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710222576.6A Pending CN106930793A (en) | 2017-04-06 | 2017-04-06 | Using the refrigeration system of pressure energy of natural gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106930793A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008136119A1 (en) * | 2007-04-26 | 2008-11-13 | Hitachi, Ltd. | Gas turbine utilizing cold heat of lng and operating method of gas turbine utilizing cold heat of lng |
| 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 |
| CN202432241U (en) * | 2011-12-31 | 2012-09-12 | 新奥科技发展有限公司 | Natural gas filling system |
| CN105003310A (en) * | 2015-07-31 | 2015-10-28 | 北京市燃气集团有限责任公司 | Pressure energy electricity generation compression system of natural gas pipe network |
| CN205064001U (en) * | 2015-09-14 | 2016-03-02 | 中投碧城节能科技有限公司 | Natural gas transportation pipeline residual pressure power generation system based on single screw rod expander |
| CN105888845A (en) * | 2016-06-12 | 2016-08-24 | 华电郑州机械设计研究院有限公司 | Natural gas differential pressure cold energy utilization device |
| WO2016204893A1 (en) * | 2015-06-16 | 2016-12-22 | Conlon William M | Cryogenic liquid energy storage |
| CN106281523A (en) * | 2016-07-25 | 2017-01-04 | 北京建筑大学 | Skid-mounted type diffuses retracting device and the method for natural gas |
| CN206707786U (en) * | 2017-04-06 | 2017-12-05 | 碧海舟（北京）节能环保装备有限公司 | Utilize the refrigeration system of pressure energy of natural gas |
-
2017
- 2017-04-06 CN CN201710222576.6A patent/CN106930793A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008136119A1 (en) * | 2007-04-26 | 2008-11-13 | Hitachi, Ltd. | Gas turbine utilizing cold heat of lng and operating method of gas turbine utilizing cold heat of lng |
| 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 |
| CN202432241U (en) * | 2011-12-31 | 2012-09-12 | 新奥科技发展有限公司 | Natural gas filling system |
| WO2016204893A1 (en) * | 2015-06-16 | 2016-12-22 | Conlon William M | Cryogenic liquid energy storage |
| CN105003310A (en) * | 2015-07-31 | 2015-10-28 | 北京市燃气集团有限责任公司 | Pressure energy electricity generation compression system of natural gas pipe network |
| CN205064001U (en) * | 2015-09-14 | 2016-03-02 | 中投碧城节能科技有限公司 | Natural gas transportation pipeline residual pressure power generation system based on single screw rod expander |
| CN105888845A (en) * | 2016-06-12 | 2016-08-24 | 华电郑州机械设计研究院有限公司 | Natural gas differential pressure cold energy utilization device |
| CN106281523A (en) * | 2016-07-25 | 2017-01-04 | 北京建筑大学 | Skid-mounted type diffuses retracting device and the method for natural gas |
| CN206707786U (en) * | 2017-04-06 | 2017-12-05 | 碧海舟（北京）节能环保装备有限公司 | Utilize the refrigeration system of pressure energy of natural gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7807201B2 (en) | Integrated Power Production and Storage System | |
| GB2543622A (en) | Hybrid power generation system | |
| CN104265381A (en) | Natural gas pipeline network variable-voltage generation and cooling system and method | |
| CN205876399U (en) | Empty energy storage energy release system of high -efficient liquid | |
| CN205895337U (en) | Coupled system that pressure energy and cool and thermal power trigeminy supplied | |
| CN110284973A (en) | A kind of distributed triple-generation system | |
| CN106091450B (en) | Intellectuality energy supply microgrid | |
| CN106050571A (en) | Communication base station comprehensive energy supply system and method based on wind-solar complementation | |
| Chen et al. | Optimization of operation strategies for a combined cooling, heating and power system based on adiabatic compressed air energy storage | |
| CN106499599A (en) | A kind of non-afterburning compressed air electricity generation system of photo-thermal combined type | |
| CN206845247U (en) | One kind enhancing power plant flexibility therrmodynamic system | |
| CN109885855B (en) | Cold-heat-electricity triple energy station steady-state scheduling method considering unit characteristics | |
| CN104864632A (en) | Tri-generation supply and ground source heat pump coupling energy supply system | |
| CN206816307U (en) | A kind of new thermoelectricity decoupling therrmodynamic system | |
| CN206707786U (en) | Utilize the refrigeration system of pressure energy of natural gas | |
| CN115523559B (en) | Ice-cold thermoelectric energy supply system, winter heating method, summer cooling method | |
| CN102297099B (en) | Wind power generator capable of automatically cooling by adopting air circulation system and cooling method for wind power generator | |
| CN204186430U (en) | A kind of gas distributing system pressure regulation power generating refrigeration system | |
| CN106930793A (en) | Using the refrigeration system of pressure energy of natural gas | |
| CN204880853U (en) | Trigeminy supplies and earth source heat pump coupling energy supply system | |
| CN208205554U (en) | A kind of LNG cold energy recycling distributed energy resource system for data center computer room | |
| CN206071727U (en) | A kind of auxiliary air stream system for gas turbine | |
| CN106020160A (en) | Factory integrated control system | |
| CN106415143A (en) | Cooling systems and methods | |
| CN113982893B (en) | Closed micro gas turbine circulating system with adjustable peak energy storage and operation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180419 Address after: 100029 No. 307, B block, 11 Xing Huo Road, Science City, Fengtai District, Beijing (Park) Applicant after: Beijing BSS Corrosion Protection Industry Co., Ltd. Address before: 100029 Beijing city Chaoyang District Xiaoguan Beili 45 Jiayuan century No. five building 7 layer Applicant before: Bi Haizhou (Beijing) energy saving environmental protection equipment Co., Ltd. |
|
| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170707 |
|
| RJ01 | Rejection of invention patent application after publication |