CN102937038A - Multi-level recovering and comprehensive utilization system of liquefied nature gas (LNG) cold energy and using method thereof - Google Patents
Multi-level recovering and comprehensive utilization system of liquefied nature gas (LNG) cold energy and using method thereof Download PDFInfo
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Abstract
The invention discloses a multi-level recovering and comprehensive utilization system of liquefied nature gas (LNG) cold energy and a using method thereof. The system comprises an LNG vaporization warming expansion main circuit, a primary rankine cycle power generation unit, a secondary rankine cycle power generation unit, a low-temperature ice-storage cooling unit, an LNG heating low-temperature heating unit and an expansion power generation unit. The LNG vaporization warming expansion main circuit is composed of an LNG storage tank (1), a pressurizing pump (2), a first condenser (3), a second condenser (8), a first heat exchanger (13), a second heat exchanger (16) and a third expansion turbine motor (19); the primary rankine cycle power generation unit is composed of the first condenser (3), a first compressor (4), a first evaporator (5), a first expansion turbine motor (6) and a first power generator (7); the secondary rankine cycle power generation unit is composed of the second condenser (8), a second compressor (9), a second evaporator (10), a second expansion turbine motor (11) and a second power generator (12); the low-temperature ice-storage cooling unit is composed of the first heat exchanger (13), a first circulation pump (14) and an ice storage tank (15); the LNG heating low-temperature heating unit is composed of the second heat exchanger (16), a second circulation pump (17) and a water heater (18); and the expansion power generation unit is composed of the third expansion turbine motor (19) and a third power generator (20).
Description
Technical field
The present invention relates to the conversion using field of energy, particularly the multistage recovery utilization system of a kind of LNG (LNG Liquefied natural gas) cold energy and using method thereof.This system adopts the mode of multistage recovery comprehensive utilization according to the vaporizing property curve of LNG to the LNG cold energy, has improved the recovery rate of LNG cold energy.
Background technique
Along with country improves day by day to the requirement that reduces carbon emission and raising energy-saving efficiency, the energy consumption structure of China will be relied on rock gas more for counsel.In the supply of following rock gas, account for than great share from overseas LNG proportion.No matter be the LNG from overseas import, or the LNG that produces of China, when vaporization, to emit a large amount of cold energy, be generally 830-860kJ/kg.All at the approaches and methods of making great efforts exploring and enhance LNG cold energy use rate, wherein generating and cooling are main paties in countries in the world.At present, utilize the method for LNG cold energy generation to mainly contain direct expansion circulation, Lang Ken circulation or the combined cycle of the two etc.Because LNG cold energy release temperature span is large, the heat transfer temperature difference great disparity causes cold fire large with loss, and LNG cold energy use efficient is difficult to improve, and general LNG cold energy use rate only has about 30%.
Summary of the invention
The purpose of this invention is to provide the multistage recovery utilization system of a kind of LNG cold energy.This system adopts the mode of multistage recovery comprehensive utilization according to the vaporizing property curve of LNG to the LNG cold energy, has improved the recovery rate of LNG cold energy.
Another object of the present invention provides the using method of the multistage recovery utilization system of a kind of described LNG cold energy.
The multistage recovery utilization system of described LNG cold energy comprises:
1), the LNG vaporization intensification expansion major loop that consisted of by LNG storage tank, compression pump, the first condenser, the second condenser, First Heat Exchanger, the second heat exchanger and the 3rd expansion turbine, be connected with gas distributing system or user;
2) first order Lang Ken circulating generation unit that, is consisted of by the first condenser, the first compressor, the first vaporizer, the first expansion turbine and the first generator;
3) the Lang Ken circulating generation unit, the second level that, is consisted of by the second condenser, the second compressor, the second vaporizer, the second expansion turbine and the second generator;
4) the low temperature ice storage cooling unit that, is consisted of by First Heat Exchanger, the first recycle pump and ice storage tank;
5) the LNG heating low-temperature heat supply unit that, is consisted of by the second heat exchanger, the second recycle pump and water heater;
6) the expansion power generation unit that, is consisted of by the 3rd expansion turbine and the 3rd generator;
In described LNG vaporization intensification expansion major loop, the LNG storage tank is connected with compression pump, the first condenser, the second condenser, First Heat Exchanger, the second heat exchanger and the 3rd expansion turbine successively by pipeline.
In described first order Lang Ken circulating generation unit, the first condenser is connected and gets back to the circulation loop of the first condenser formation sealing successively with the first compressor, the first vaporizer and the expansion turbine of being connected by pipeline, in this circulation loop, be filled with refrigerant medium I, the first expansion turbine is connected with the first generator by mechanical axis, and the first vaporizer is connected with low temperature cooling pipeline by another pipeline.
In Lang Ken circulating generation unit, the described second level, the second condenser is connected and gets back to the circulation loop of the second condenser formation sealing successively with the second compressor, the second vaporizer and the expansion turbine of being connected by pipeline, in this circulation loop, be filled with refrigerant medium II, the second expansion turbine is connected with the second generator by mechanical axis, and the second vaporizer is connected with low temperature cooling pipeline by another pipeline.
In described low temperature ice storage cooling unit, First Heat Exchanger is connected and gets back to the circulation loop of First Heat Exchanger formation sealing successively with ice storage tank with the first recycle pump by pipeline, be filled with refrigerant medium III in this circulation loop, ice storage tank is connected with low temperature cooling pipeline by another pipeline.
In described LNG heating low-temperature heat supply unit, the second heat exchanger is connected and gets back to the circulation loop of the second heat exchanger formation sealing successively with water heater with the second recycle pump by pipeline, be filled with working-medium water in this circulation loop, water heater is connected with the low-temperature heat supply pipeline by another pipeline.
In described expansion power generation unit, the 3rd expansion turbine is connected with the 3rd generator by mechanical axis.
Preferably, described refrigerant medium I comprises one or more the mixture in methane, ethane, propane, butane, isobutane, ethene, propylene, difluoromethane, fluoroform, Difluoroethane, HFC-143a, HFC-134a and the pentafluoroethane.
Preferably, described refrigerant medium II comprises one or more the mixture in methane, ethane, propane, butane, isobutane, ethene, propylene, difluoromethane, fluoroform, Difluoroethane, HFC-143a, HFC-134a and the pentafluoroethane.
Preferably, described refrigerant medium III comprises one or more the mixture in methane, ethane, propane, butane, isobutane, ethene, propylene, difluoromethane, fluoroform, Difluoroethane, HFC-143a, HFC-134a and the pentafluoroethane.
Preferably, described water heater be gas water-heater, solar water heater, electric water heater, acting water heater or residue heat water heater.
The using method of the multistage recovery utilization system of described LNG cold energy is as follows:
In described LNG vaporization intensification expansion major loop, the LNG of LNG storage tank output delivers to the first condenser after the compression pump pressurization, the heat of LNG absorption refrigerant medium I is vaporizated into the saturated vapour of rock gas in the first condenser, this saturated vapour enters First Heat Exchanger absorb the heat of refrigerant medium II in the second condenser after, rock gas absorbs the heat continuation intensification of refrigerant medium III in First Heat Exchanger, rock gas after the intensification enters the second heat exchanger, the heat of rock gas absorption working-medium water heats up again in the second heat exchanger, the 3rd expansion turbine that enters rock gas after the intensification expands and does work, and rock gas expands and enters pipe network or user after acting is lowered the temperature;
In described first order Lang Ken circulating generation unit, refrigerant medium I is condensed into low-pressure liquid in the first condenser, then after being high-pressure liquid, the first compressor pressurizes enters the first vaporizer, to absorb the heat of vaporization of described low temperature cooling pipeline be high-pressure gaseous to refrigerant medium I in the first vaporizer, the refrigerant medium I of this high-pressure gaseous enters the first expansion turbine, the acting step-down of expanding in the first expansion turbine is the refrigerant medium I of low pressure gaseous state, the refrigerant medium I of this low pressure gaseous state enters the first condenser and again is condensed into next time circulation of low-pressure liquid continuation, and refrigerant medium I institute's work in the first expansion turbine is converted into mechanical energy and drives the generating of the first generator by mechanical axis;
In Lang Ken circulating generation unit, the described second level, refrigerant medium II is condensed into low-pressure liquid in the second condenser, then after being high-pressure liquid, the second compressor pressurizes enters the second vaporizer, to absorb the heat of vaporization of described low temperature cooling pipeline be high-pressure gaseous to refrigerant medium II in the second vaporizer, the refrigerant medium II of this high-pressure gaseous enters the second expansion turbine, the acting step-down of expanding in the second expansion turbine is the refrigerant medium II of low pressure gaseous state, the refrigerant medium II of this low pressure gaseous state enters the second condenser and again is condensed into next time circulation of low-pressure liquid continuation, and refrigerant medium II institute's work in the second expansion turbine is converted into mechanical energy and drives the generating of the second generator by mechanical axis;
In described low temperature ice storage cooling unit, refrigerant medium III is the rock gas release heat in the LNG vaporization intensification expansion major loop in First Heat Exchanger, then drive through the first recycle pump and enter ice storage tank, in ice storage tank, again enter First Heat Exchanger behind the heat of refrigerant medium III absorption low temperature cooling pipeline and continue next time circulation;
In described LNG heating low-temperature heat supply unit, working-medium water is the rock gas release heat in the LNG vaporization intensification expansion major loop in the second heat exchanger, then drive through the second recycle pump and enter water heater, again enter the second heat exchanger after working-medium water is heated by water heater and continue next time circulation, the waste heat of water heater is by the output of low-temperature heat supply pipeline;
In described expansion power generation unit, rock gas institute's work in the 3rd expansion turbine is converted into mechanical energy and drives the generating of the 3rd generator by mechanical axis.
The present invention has following beneficial effect:
The present invention has made up two-stage Lang Ken circulation and one-level expansion cycle generator unit according to the segmentation characteristic of LNG vaporization curve, and is provided with low temperature cooling unit and low-temperature heat supply unit for improving LNG cold energy use rate, has realized the multistage recovery comprehensive utilization of LNG cold energy.Theoretical calculating shows that under the working pressure of 8MPa, the comprehensive utilization ratio of the LNG cold energy of described system can reach more than 38%, and as reducing working pressure, the comprehensive utilization ratio of LNG cold energy also can further improve.
Description of drawings
Fig. 1 is the schematic representation of the multistage recovery utilization system of LNG cold energy of the embodiment of the invention 1.
Embodiment
Below in conjunction with drawings and Examples summary of the invention of the present invention is further described.
As shown in Figure 1, the multistage recovery utilization system of LNG cold energy provided by the invention comprises:
1), the LNG vaporization intensification expansion major loop that consisted of by LNG storage tank 1, compression pump 2, the first condenser 3, the second condenser 8, First Heat Exchanger 13, the second heat exchanger 16 and the 3rd expansion turbine 19, be connected with gas distributing system or user;
2) first order Lang Ken circulating generation unit that, is consisted of by the first condenser 3, the first compressor 4, the first vaporizer 5, the first expansion turbine 6 and the first generator 7;
3) the Lang Ken circulating generation unit, the second level that, is consisted of by the second condenser 8, the second compressor 9, the second vaporizer 10, the second expansion turbine 11 and the second generator 12;
4) the low temperature ice storage cooling unit that, is consisted of by First Heat Exchanger 13, the first recycle pump 14 and ice storage tank 15;
5) the LNG heating low-temperature heat supply unit that, is consisted of by the second heat exchanger 16, the second recycle pump 17 and water heater 18;
6) the expansion power generation unit that, is consisted of by gas the 3rd expansion turbine 19 and the 3rd generator 20.
In described system, the annexation of each unit is as follows:
In described LNG vaporization intensification expansion major loop, LNG storage tank 1 is connected with compression pump 2, the first condenser 3, the second condenser 8, First Heat Exchanger 13, the second heat exchanger 16 and the 3rd expansion turbine 19 successively by pipeline;
In described first order Lang Ken circulating generation unit, the first condenser 3 is connected and gets back to the circulation loop of the first condenser 3 formation sealings successively with the first compressor 4, the first vaporizer 5 and the expansion turbine 6 of being connected by pipeline, in this circulation loop, be filled with refrigerant medium I, the first expansion turbine 6 is connected with the first generator 7 by mechanical axis, and the first vaporizer 5 is connected with low temperature cooling pipeline by another pipeline;
In Lang Ken circulating generation unit, the described second level, the second condenser 8 is connected and gets back to the circulation loop of the second condenser 8 formation sealings successively with the second compressor 9, the second vaporizer 10 and the expansion turbine 11 of being connected by pipeline, in this circulation loop, be filled with refrigerant medium II, the second expansion turbine 11 is connected with the second generator 12 by mechanical axis, and the second vaporizer 10 is connected with low temperature cooling pipeline by another pipeline;
In described low temperature ice storage cooling unit, First Heat Exchanger 13 is connected with ice storage tank with the first recycle pump 14 successively by pipeline and is connected and gets back to the circulation loop that First Heat Exchanger 13 consists of sealing, be filled with refrigerant medium III in this circulation loop, ice storage tank 15 is connected with low temperature cooling pipeline by another pipeline;
In described LNG heating low-temperature heat supply unit, the second heat exchanger 16 is connected with water heater with the second recycle pump 17 successively by pipeline and is connected and gets back to the circulation loop that the second heat exchanger 16 consists of sealing, be filled with working-medium water in this circulation loop, water heater 18 is connected with the low-temperature heat supply pipeline by another pipeline;
In described expansion power generation unit, the 3rd expansion turbine 19 is connected with the 3rd generator 20 by mechanical axis.
In described LNG heating low-temperature heat supply unit, water heater 18 is gas water-heater.
Because component and the content thereof of LNG there are differences, the segmentation characteristic of LNG vaporization curve is also different along with the difference of the working pressure in the LNG vaporescence, and therefore described refrigerant medium I, described refrigerant medium II and described refrigerant medium III need to select and allocate according to actual conditions.
Embodiment 2
As shown in Figure 1, the using method of the multistage recovery utilization system of LNG cold energy of the present invention is as follows:
In described LNG vaporization intensification expansion major loop, the LNG of LNG storage tank 1 output delivers to the first condenser 3 after compression pump 2 pressurizations, the heat of LNG absorption refrigerant medium I is vaporizated into the saturated vapour of rock gas in the first condenser 3, this saturated vapour enters First Heat Exchanger 13 absorb the heat of refrigerant medium II in the second condenser 8 after, rock gas absorbs the heat continuation intensification of refrigerant medium III in First Heat Exchanger 13, rock gas after the intensification enters the second heat exchanger 16, the heat of rock gas absorption working-medium water heats up again in the second heat exchanger 16, the 3rd expansion turbine 19 that enters rock gas after the intensification expands and does work, and rock gas expands and enters pipe network or user after acting is lowered the temperature;
In described first order Lang Ken circulating generation unit, refrigerant medium I is condensed into low-pressure liquid in the first condenser 3, then after being pressurised into high-pressure liquid, the first compressor 4 enters the first vaporizer 5, to absorb the heat of vaporization of described low temperature cooling pipeline be high-pressure gaseous to refrigerant medium I in the first vaporizer 5, the refrigerant medium I of this high-pressure gaseous enters the first expansion turbine 6, the acting step-down of expanding in the first expansion turbine 6 is the refrigerant medium I of low pressure gaseous state, the refrigerant medium I of this low pressure gaseous state enters the first condenser 3 and again is condensed into next time circulation of low-pressure liquid continuation, and refrigerant medium I institute's work in the first expansion turbine 6 is converted into mechanical energy and drives 7 generatings of the first generator by mechanical axis;
In Lang Ken circulating generation unit, the described second level, refrigerant medium II is condensed into low-pressure liquid in the second condenser 8, then after being pressurised into high-pressure liquid, the second compressor 9 enters the second vaporizer 10, to absorb the heat of vaporization of described low temperature cooling pipeline be high-pressure gaseous to refrigerant medium II in the second vaporizer 10, the refrigerant medium II of this high-pressure gaseous enters the second expansion turbine 11, the acting step-down of expanding in the second expansion turbine 11 is the refrigerant medium II of low pressure gaseous state, the refrigerant medium II of this low pressure gaseous state enters the second condenser 8 and again is condensed into next time circulation of low-pressure liquid continuation, and refrigerant medium II institute's work in the second expansion turbine 11 is converted into mechanical energy and drives 12 generatings of the second generator by mechanical axis;
In described low temperature ice storage cooling unit, refrigerant medium III is the rock gas release heat in the LNG vaporization intensification expansion major loop in First Heat Exchanger 13, then drive through the first recycle pump 14 and enter ice storage tank 15, in ice storage tank 15, again enter First Heat Exchanger 13 behind the heat of refrigerant medium III absorption low temperature cooling pipeline and continue next time circulation;
In described LNG heating low-temperature heat supply unit, working-medium water is the rock gas release heat in the LNG vaporization intensification expansion major loop in the second heat exchanger 16, then drive through the second recycle pump 17 and enter water heater 18, again enter the second heat exchanger 16 after working-medium water is heated by water heater 18 and continue next time circulation, the waste heat of water heater 18 is by the output of low-temperature heat supply pipeline;
In described expansion power generation unit, rock gas institute's work in the 3rd expansion turbine 19 is converted into mechanical energy and drives 20 generatings of the 3rd generator by mechanical axis.
Should be appreciated that the above detailed description of technological scheme of the present invention being carried out by preferred embodiment is illustrative and not restrictive.Those of ordinary skill in the art is reading on the basis of specification of the present invention and can make amendment to the technological scheme that each embodiment puts down in writing, and perhaps part technical characteristics wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technological scheme.
Claims (6)
1. multistage recovery utilization system of LNG cold energy is characterized in that this system comprises:
1), by the LNG vaporization intensification expansion major loop that LNG storage tank (1), compression pump (2), the first condenser (3), the second condenser (8), First Heat Exchanger (13), the second heat exchanger (16) and the 3rd expansion turbine (19) consist of, this major loop is connected with gas distributing system or user;
2) first order Lang Ken circulating generation unit that, is consisted of by the first condenser (3), the first compressor (4), the first vaporizer (5), the first expansion turbine (6) and the first generator (7);
3) the Lang Ken circulating generation unit, the second level that, is consisted of by the second condenser (8), the second compressor (9), the second vaporizer (10), the second expansion turbine (11) and the second generator (12);
4) the low temperature ice storage cooling unit that, is consisted of by First Heat Exchanger (13), the first recycle pump (14) and ice storage tank (15);
5) the LNG heating low-temperature heat supply unit that, is consisted of by the second heat exchanger (16), the second recycle pump (17) and water heater (18);
6) the expansion power generation unit that, is consisted of by the 3rd expansion turbine (19) and the 3rd generator (20);
In described LNG vaporization intensification expansion major loop, LNG storage tank (1) is connected 19 with compression pump (2), the first condenser (3), condenser (8), First Heat Exchanger (13), the second heat exchanger (16) with expansion turbine successively by pipeline) be connected;
In described first order Lang Ken circulating generation unit, the first condenser (3) is connected and gets back to the circulation loop of the first condenser (3) formation sealing successively with the first compressor (4), the first vaporizer (5) and the expansion turbine (6) of being connected by pipeline, in this circulation loop, be filled with refrigerant medium I, the first expansion turbine (6) is connected with the first generator (7) by mechanical axis, and the first vaporizer (5) is connected with low temperature cooling pipeline by another pipeline;
In Lang Ken circulating generation unit, the described second level, the second condenser (8) is connected and gets back to the circulation loop of the second condenser (8) formation sealing successively with the second compressor (9), the second vaporizer (10) and the expansion turbine (11) of being connected by pipeline, in this circulation loop, be filled with refrigerant medium II, the second expansion turbine (11) is connected with the second generator (12) by mechanical axis, and the second vaporizer (10) is connected with low temperature cooling pipeline by another pipeline;
In described low temperature ice storage cooling unit, First Heat Exchanger (13) is connected 15 with the first recycle pump (14) with ice storage tank successively by pipeline) be connected and get back to the circulation loop that First Heat Exchanger (13) consists of sealing, be filled with refrigerant medium III in this circulation loop, ice storage tank (15) is connected with low temperature cooling pipeline by another pipeline;
In described LNG heating low-temperature heat supply unit, the second heat exchanger (16) is connected 18 with the second recycle pump (17) with water heater successively by pipeline) be connected and get back to the circulation loop that the second heat exchanger (16) consists of sealing, be filled with working-medium water in this circulation loop, water heater (18) is connected with the low-temperature heat supply pipeline by another pipeline;
In described expansion power generation unit, the 3rd expansion turbine (19) is connected with the 3rd generator (20) by mechanical axis.
2. system according to claim 1, it is characterized in that described refrigerant medium I comprises one or more the mixture in methane, ethane, propane, butane, isobutane, ethene, propylene, difluoromethane, fluoroform, Difluoroethane, HFC-143a, HFC-134a and the pentafluoroethane.
3. system according to claim 1, it is characterized in that described refrigerant medium II comprises one or more the mixture in methane, ethane, propane, butane, isobutane, ethene, propylene, difluoromethane, fluoroform, Difluoroethane, HFC-143a, HFC-134a and the pentafluoroethane.
4. system according to claim 1, it is characterized in that described refrigerant medium III comprises one or more the mixture in methane, ethane, propane, butane, isobutane, ethene, propylene, difluoromethane, fluoroform, Difluoroethane, HFC-143a, HFC-134a and the pentafluoroethane.
5. system according to claim 1 is characterized in that, described water heater (18) be gas water-heater, solar water heater, electric water heater, acting water heater or residue heat water heater.
6. the using method of the multistage recovery utilization system of LNG cold energy as claimed in claim 1 is characterized in that,
In described LNG vaporization intensification expansion major loop, the LNG of LNG storage tank (1) output delivers to the first condenser (3) after compression pump (2) pressurization, the heat of LNG absorption refrigerant medium I is vaporizated into the saturated vapour of rock gas in the first condenser (3), this saturated vapour enters First Heat Exchanger (13) absorb the heat of refrigerant medium II in the second condenser (8) after, rock gas absorbs the heat continuation intensification of refrigerant medium III in First Heat Exchanger (13), rock gas after the intensification enters the second heat exchanger (16), the heat of rock gas absorption working-medium water heats up again in the second heat exchanger (16), the 3rd expansion turbine (19) that enters rock gas after the intensification expands and does work, and rock gas expands and enters pipe network or user after acting is lowered the temperature;
In described first order Lang Ken circulating generation unit, refrigerant medium I is condensed into low-pressure liquid in the first condenser (3), then after being pressurised into high-pressure liquid, the first compressor (4) enters the first vaporizer (5), to absorb the heat of vaporization of described low temperature cooling pipeline be high-pressure gaseous to refrigerant medium I in the first vaporizer (5), the refrigerant medium I of this high-pressure gaseous enters the first expansion turbine (6), the acting step-down of expanding in the first expansion turbine (6) is the refrigerant medium I of low pressure gaseous state, the refrigerant medium I of this low pressure gaseous state enters the first condenser (3) and again is condensed into next time circulation of low-pressure liquid continuation, and refrigerant medium I institute's work in the first expansion turbine (6) is converted into mechanical energy and drives the first generator (7) generating by mechanical axis;
In Lang Ken circulating generation unit, the described second level, refrigerant medium II is condensed into low-pressure liquid in the second condenser (8), then after being pressurised into high-pressure liquid, the second compressor (9) enters the second vaporizer (10), to absorb the heat of vaporization of described low temperature cooling pipeline be high-pressure gaseous to refrigerant medium II in the second vaporizer (10), the refrigerant medium II of this high-pressure gaseous enters the second expansion turbine 11, the acting step-down of expanding in the second expansion turbine 11 is the refrigerant medium II of low pressure gaseous state, the refrigerant medium II of this low pressure gaseous state enters the second condenser (8) and again is condensed into next time circulation of low-pressure liquid continuation, and refrigerant medium II institute's work in the second expansion turbine 11 is converted into mechanical energy and drives the second generator (12) generating by mechanical axis;
In described low temperature ice storage cooling unit, refrigerant medium III is the rock gas release heat in the LNG vaporization intensification expansion major loop in First Heat Exchanger (13), then drive through the first recycle pump (14) and enter ice storage tank (15), in ice storage tank (15), again enter First Heat Exchanger (13) behind the heat of refrigerant medium III absorption low temperature cooling pipeline and continue next time circulation;
In described LNG heating low-temperature heat supply unit, working-medium water is the rock gas release heat in the LNG vaporization intensification expansion major loop in the second heat exchanger (16), then drive through the second recycle pump (17) and enter water heater (18), again enter the second heat exchanger (16) after working-medium water is heated by water heater (18) and continue next time circulation, the waste heat of water heater (18) is by the output of low-temperature heat supply pipeline;
In described expansion power generation unit, rock gas institute's work in the 3rd expansion turbine (19) is converted into mechanical energy and drives the 3rd generator (20) generating by mechanical axis.
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| CN103628982A (en) * | 2013-11-27 | 2014-03-12 | 暨南大学 | Combined power circulating method capable of catching carbon dioxide (CO2) by using LNG (Liquefied Natural Gas) cold energy and system thereof |
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