CN202250274U - Natural gas liquefaction generating set - Google Patents
Natural gas liquefaction generating set Download PDFInfo
- Publication number
- CN202250274U CN202250274U CN2011203388561U CN201120338856U CN202250274U CN 202250274 U CN202250274 U CN 202250274U CN 2011203388561 U CN2011203388561 U CN 2011203388561U CN 201120338856 U CN201120338856 U CN 201120338856U CN 202250274 U CN202250274 U CN 202250274U
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- natural gas
- generating device
- electricity generating
- gas liquefaction
- heat exchanger
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Abstract
A new energy natural gas liquefaction generating set comprises two parts (namely a natural gas liquefaction device and a generating set). In the natural gas liquefaction device, natural gas releases heat, cools down, condenses and is liquefied in a condenser and then enters into a liquefied natural gas storage tank; and in the generating set, a booster pump, a heat exchanger, the condenser, an expansion generator set, the heat exchanger, a throttling valve and a gas-liquid separator are connected in sequence, and the gas-liquid separator, the heat exchanger, a compressor, the heat exchanger and another throttling valve are also connected in sequence. The generating set can output cold quantity to the natural gas in the natural gas liquefaction device and simultaneously absorb the heat energy of the natural gas in the natural gas liquefaction device to heat a cycle liquid working medium into a high-pressure supercritical fluid, and the high-pressure supercritical fluid works to generate electricity through expansion throttling and meanwhile cools down and releases pressure to obtain cold quantity, so that the natural gas liquefaction consumes no electricity and the generating set can absorb the heat energy of the natural gas and convert the heat energy into electric energy; and besides self consumption, the generated electric power can be uploaded to a power network.
Description
Technical field
The utility model relates to a kind of natural gas liquefaction device, especially a kind of natural gas liquefaction electricity generating device.
Background technique
At present, known natural gas liquefaction device adopts compression working medium and then expansion refrigeration to reach the purpose that makes natural gas liquefaction usually, and working medium can be that rock gas also can be nitrogen, air or other working medium.Main flow process is working medium compression-expansion-rock gas condensation, and the different processes process is variant, but its basic principle all be rely on the energy of consumption compressor compress working medium again the expansion decrease temperature and pressure obtain cold so that natural gas liquefaction.The general energy consumption of existing natural gas liquefaction device is high.
Summary of the invention
In order to overcome the high deficiency of existing natural gas liquefaction device energy consumption; The utility model provides a kind of natural gas liquefaction electricity generating device; The electricity generating device of this natural gas liquefaction electricity generating device can be exported the heat energy heating working medium that cold absorbs rock gas for the rock gas of natural gas liquefaction device simultaneously becomes high-pressure supercritical fluid; High-pressure supercritical fluid through expansion acting generating simultaneously decrease temperature and pressure obtain cold, reach and make natural gas liquefaction is not consumed energy and electricity generating device can absorb rock gas heat energy be converted into the purpose of electric energy.
The utility model solves the technological scheme that its technical problem adopted: this natural gas liquefaction electricity generating device comprises natural gas liquefaction device and electricity generating device two-part.First portion's natural gas liquefaction device; Mainly comprise condenser, LNG tank etc.; Also comprise pipeline, annex and the detection and the control gear that are connected in the system; The main technique flow process is that rock gas gets into condenser heat release cooling condensation liquefaction, and LNG Liquefied natural gas gets into LNG tank.The second portion electricity generating device; Mainly comprise suction booster, heat exchanger, expansion power generation unit, throttle valve, gas-liquid separator, compressor etc.; Generator and expansion motor are connected to form the expansion power generation unit, and electricity generating device is the condenser of shared natural gas liquefaction device also, between electricity generating device and the natural gas liquefaction device condenser are arranged; It also comprises pipeline, annex and detection and the control gear that is connected in the system; Suction booster, heat exchanger, condenser, expansion power generation unit, heat exchanger, throttle valve, gas-liquid separator connect successively in the electricity generating device, and gas-liquid separator, heat exchanger, compressor, heat exchanger, throttle valve connect successively in the electricity generating device, and the main technique flow process is that the liquid refrigerant in the gas-liquid separator gets into heat exchanger by suction booster pressurization back; The condenser output cold that gets into natural gas liquefaction device again makes natural gas condensatesization to rock gas; Absorb the heat of rock gas simultaneously, make working medium become high-pressure supercritical fluid, it is gaseous working medium that high-pressure supercritical fluid gets into expansion power generation unit expansion acting generating decrease temperature and pressure again; Gaseous working medium is crossed through heat exchanger and coldly behind the throttle valve throttling refrigeration, is got back to gas-liquid separator again, forms work cycle; Gas working medium in the gas-liquid separator get into the defeated enfleurage heat of heat exchanger by compressor pressurizes after again through heat exchanger heat release cooling after get back to gas-liquid separator behind the throttle valve throttling refrigeration, form work cycle.Cycle fluid can be nitrogen or mixed working fluid.Suction booster can adopt diaphragm pump.The expansion power generation set main shaft can be connected with the suction booster main shaft.The expansion power generation set main shaft can be connected with compressor main shaft.This natural gas liquefaction electricity generating device starts electricity usage storage battery or grid power, and generation power is uploaded electrical network except that personal.
The beneficial effect of the utility model is; The electricity generating device of this natural gas liquefaction electricity generating device can be exported the rock gas that cold is given natural gas liquefaction device; The heat energy heating working medium that absorbs rock gas simultaneously becomes high-pressure supercritical fluid; High-pressure supercritical fluid through expansion acting generating simultaneously decrease temperature and pressure obtain cold, make the heat energy that natural gas liquefaction is not consumed energy and electricity generating device can absorb rock gas be converted into electric energy.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Fig. 1 is the workflow schematic representation of the utility model preferred embodiment.
1. expansion power generation units among the figure, 2. heat exchanger, 3. throttle valve, 4. suction booster, 5. gas-liquid separator, 6. throttle valve, 7. compressor, 8. LNG tank, 9. condenser.
Embodiment
In the embodiment shown in fig. 1, this natural gas liquefaction electricity generating device comprises natural gas liquefaction device and electricity generating device two-part.First portion's natural gas liquefaction device; Mainly comprise condenser (9), LNG tank (8) etc.; Also comprise pipeline, annex and the detection and the control gear that are connected in the system; The main technique flow process is that rock gas gets into condenser (9) heat release cooling condensation liquefaction, and LNG Liquefied natural gas gets into LNG tank (8).The second portion electricity generating device; Mainly comprise suction booster (4), heat exchanger (2), expansion power generation unit (1), throttle valve (3), gas-liquid separator (4), compressor (7), throttle valve (6) etc.; Generator and expansion motor are connected to form expansion power generation unit (1); Electricity generating device is the condenser of shared natural gas liquefaction device (9) also; It also comprises pipeline, annex and detection and the control gear that is connected in the system; Suction booster in the electricity generating device (4), heat exchanger (2), condenser (9), expansion power generation unit (1), heat exchanger (2), throttle valve (3), gas-liquid separator (5) connect successively; Gas-liquid separator in the electricity generating device (5), heat exchanger (2), compressor (7), heat exchanger (2), throttle valve (6) connect successively; The main technique flow process is that the liquid refrigerant in the gas-liquid separator (5) gets into heat exchanger (2) by suction booster (4) pressurization back, and condenser (9) the output cold that gets into natural gas liquefaction device again makes natural gas condensatesization to rock gas, absorbs the heat of rock gas simultaneously; Make working medium become high-pressure supercritical fluid; It is gaseous working medium that high-pressure supercritical fluid gets into expansion power generation unit (1) the acting generating decrease temperature and pressure that expands again, and gaseous working medium is crossed through heat exchanger (2) and coldly behind throttle valve (3) throttling refrigeration, got back to gas-liquid separator (5) again, forms work cycle; Gas working medium in the gas-liquid separator (5) get into the defeated enfleurage heat of heat exchanger (2) by compressor (7) pressurization after again through heat exchanger (2) heat release cooling after get back to gas-liquid separator (5) behind throttle valve (6) throttling refrigeration, form work cycle.Cycle fluid is a nitrogen.Suction booster (4) adopts diaphragm pump.Expansion power generation unit (1) main shaft is connected with suction booster (4) main shaft.Expansion power generation unit (1) main shaft is connected with compressor (7) main shaft.
Claims (7)
1. a natural gas liquefaction electricity generating device comprises natural gas liquefaction device and electricity generating device two-part; First portion's natural gas liquefaction device mainly comprises condenser, LNG tank etc.; And the pipeline that is connected in the system, annex and detection and control gear; The second portion electricity generating device mainly comprises suction booster, heat exchanger, expansion power generation unit, throttle valve, gas-liquid separator, compressor etc.; And the pipeline that is connected in the system, annex and detection and control gear, it is characterized in that: between electricity generating device and the natural gas liquefaction device condenser is arranged.
2. natural gas liquefaction electricity generating device according to claim 1 is characterized in that: suction booster, heat exchanger, condenser, expansion power generation unit, heat exchanger, throttle valve, gas-liquid separator connect successively in the electricity generating device of this natural gas liquefaction electricity generating device.
3. natural gas liquefaction electricity generating device according to claim 1 is characterized in that: gas-liquid separator, heat exchanger, compressor, heat exchanger, throttle valve connect successively in the electricity generating device of this natural gas liquefaction electricity generating device.
4. natural gas liquefaction electricity generating device according to claim 1 is characterized in that: the suction booster of the electricity generating device of this natural gas liquefaction electricity generating device connects heat exchanger.
5. natural gas liquefaction electricity generating device according to claim 1 is characterized in that: the compressor inlet of the electricity generating device of this natural gas liquefaction electricity generating device connects heat exchanger, and outlet connects heat exchanger.
6. natural gas liquefaction electricity generating device according to claim 1 is characterized in that: the suction booster of the electricity generating device of this natural gas liquefaction electricity generating device adopts diaphragm pump.
7. natural gas liquefaction electricity generating device according to claim 1 is characterized in that: the expansion power generation set main shaft of the electricity generating device of this natural gas liquefaction electricity generating device is connected with the suction booster main shaft, and the expansion power generation set main shaft is connected with compressor main shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203388561U CN202250274U (en) | 2011-09-09 | 2011-09-09 | Natural gas liquefaction generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203388561U CN202250274U (en) | 2011-09-09 | 2011-09-09 | Natural gas liquefaction generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202250274U true CN202250274U (en) | 2012-05-30 |
Family
ID=46111532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203388561U Expired - Fee Related CN202250274U (en) | 2011-09-09 | 2011-09-09 | Natural gas liquefaction generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202250274U (en) |
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2011
- 2011-09-09 CN CN2011203388561U patent/CN202250274U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20120909 |