CN105952507A - Power generation system and power generation method with same - Google Patents
Power generation system and power generation method with same Download PDFInfo
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- CN105952507A CN105952507A CN201610399030.3A CN201610399030A CN105952507A CN 105952507 A CN105952507 A CN 105952507A CN 201610399030 A CN201610399030 A CN 201610399030A CN 105952507 A CN105952507 A CN 105952507A
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- ammonia
- heat exchanger
- generation system
- electricity generation
- gasification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
- F01K25/106—Ammonia
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention provides a power generation system and a power generation method with the same. The power generation system comprises a liquid ammonia pump, a gasification heat exchanger, a heating heat exchanger, a gas turbine and a generator communicated in sequence; and an outlet of the gas turbine is communicated with an inlet of the liquid ammonia pump. The power generation system further comprises a first input pipe communicated with a heat source inlet of the heating heat exchanger, and a second input pipe communicated with a heat source inlet of the gasification heat exchanger for introducing a heat source; as liquid ammonia has the gasification property at a lower temperature, after a low-temperature heat source is input to excessively heat the gasification heat exchanger and the heating heat exchanger, saturated ammonia can be formed through gasifying the liquid ammonia introduced into the gasification heat exchanger by the liquid ammonia pump, and is heated by the heating heat exchanger for pressurization to form overheated ammonia; and the high-pressure overheated ammonia is reduced the pressure in the gas turbine to drive the gas turbine to rotate and to enable the generator to generate electricity, so that a low-temperature heat source power generation system realizes power generation of the low-temperature heat source.
Description
Technical field
The present invention relates to technical field of energy utilization, in particular to a kind of electricity generation system and the electricity-generating method with it.
Background technology
Current China has become as energy resource consumption state the biggest in the world, but energy utilization rate differs farther out with developed country, wherein
Less than 200 DEG C low-temperature industrial UTILIZATION OF VESIDUAL HEAT IN are less, it would be highly desirable to exploitation.
At present, steam power plant generally uses water as cycle fluid and drives the gas-turbine generating of generating set.Operation principle is: high pressure
Water forms high-pressure water vapor so as to high temperature heat source gasification, and high-pressure water vapor drives gas-turbine to generate electricity in decompression process, and low setting-out steams
Vapour cooling condenses into aqueous water, conversion cycle between the gas phase liquid phase of water, completes generating.But, above-mentioned electricity-generating method must be so as to
High temperature heat source completes the transformation between the gas phase liquid phase of water, result in the dependency to high temperature heat source excessive, so that the utilization of the energy
Rate is uneven.
Summary of the invention
Present invention is primarily targeted at and a kind of electricity generation system is provided and there is its electricity-generating method, necessary to solve in prior art
Utilize high temperature heat source to drive generating set generating and cause the excessive problem of the utilization rate of high temperature heat source.
To achieve these goals, according to an aspect of the invention, it is provided a kind of electricity generation system, including the liquid being sequentially communicated
Ammonia pump, gasification heat exchanger, temperature rise heat exchanger, gas-turbine and electromotor, the outlet of gas-turbine connects with the entrance of ammonia pump, and
Electricity generation system also includes: the first input channel, connects with the thermal source inlet of temperature rise heat exchanger, is used for being passed through thermal source；Second input
Pipeline, connects with the thermal source inlet of gasification heat exchanger, is used for being passed through thermal source.
Further, electricity generation system includes organizing gasification heat exchanger and temperature rise heat exchanger one to one, and each group gasification heat exchanger more
And be arranged in parallel between temperature rise heat exchanger.
Further, the second input channel connects with the thermal source outlet of temperature rise heat exchanger, and electricity generation system also includes and gasification heat exchange
The thermal source output channel of the thermal source outlet connection of device.
Further, electricity generation system also includes: pressure-control valve, is arranged on the pipeline that gasification heat exchanger connects with temperature rise heat exchanger
On.
Further, electricity generation system also includes cooling heat exchanger, connects with gas-turbine and ammonia pump respectively, and cooling heat exchanger is used for
It is liquefied ammonia by ammonia liquefaction.
Further, electricity generation system also includes the liquefied ammonia storage device being arranged between cooling heat exchanger and ammonia pump.
According to a further aspect in the invention, it is provided that a kind of electricity-generating method, electricity-generating method carries out following by above-mentioned electricity generation system
Step: S1, the thermal source that temperature is more than 80 DEG C is passed through the first input channel and the second input channel, with to temperature rise heat exchanger and
Gasification heat exchanger preheats；S2, by ammonia pump to gasification heat exchanger in be passed through liquefied ammonia so that liquefied ammonia gasification heat exchanger in
Gasify and form saturated ammonia；S3, saturated ammonia is passed through temperature rise heat exchanger, so that saturated ammonia gas lift temperature form overheated ammonia；
S4, overheated ammonia is passed through gas-turbine, so that the energy of overheated ammonia is converted to mechanical energy；S5, gas-turbine are driven by mechanical energy
Dynamic electrical power generators.
Further, electricity generation system is above-mentioned electricity generation system, and electricity-generating method also includes: S6, the heat energy of overheated ammonia are converted to
Form low pressure ammonia after mechanical energy, low pressure ammonia is passed through in cooling heat exchanger, so that low-pressure ammonia gas liquefaction forms liquefied ammonia.
Further, after execution of step S6, the liquefied ammonia that low-pressure ammonia gas liquefaction is formed is passed through to ammonia pump.
Further, electricity generation system is above-mentioned electricity generation system, after execution of step S6, and the liquid that low-pressure ammonia gas liquefaction is formed
Ammonia is passed through to liquefied ammonia storage device.
Application technical scheme, it is provided that a kind of include being linked in sequence ammonia pump, gasification heat exchanger, temperature rise heat exchanger,
Gas-turbine and the electricity generation system of electromotor, the outlet of gas-turbine is connected with the entrance of ammonia pump, and electricity generation system also include respectively with
Temperature rise heat exchanger and gasification the first input channel of connecting of heat exchanger and the second input channel, owing to liquefied ammonia has at a lower temperature
The character of gasification, thus input low-temperature heat source so that gasification heat exchanger and intensification to be changed to the first input channel and the second input channel
After hot device is overheated, the liquefied ammonia being passed through to gasification heat exchanger by ammonia pump can be gasified to form saturated ammonia, and saturated ammonia exists
Be warmed in temperature rise heat exchanger and pressurize the overheated ammonia of formation, and the overheated ammonia of high pressure reduces pressure to drive gas-turbine to turn in gas-turbine
Move and make electrical power generators, and then achieved the generating of low-temperature heat source by above-mentioned low temperature heat resource power generation system.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.Below
Will be with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The Figure of description of the part constituting the present invention is used for providing a further understanding of the present invention, and the present invention's is schematic real
Execute example and illustrate for explaining the present invention, being not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of a kind of electricity generation system that embodiment of the present invention provided.
Wherein, above-mentioned accompanying drawing includes the following drawings labelling:
110, the first liquefied ammonia conveyance conduit；120, the first ammonia conveyance conduit；130, the second ammonia conveyance conduit；140, linkage
Axle；150, the second liquefied ammonia conveyance conduit；160, the first input channel；170, the second input channel；180, thermal source outlet tube
Road；190, low-temperature receiver input channel；20, ammonia pump；30, gasification heat exchanger；40, temperature rise heat exchanger；50, gas-turbine；60、
Electromotor；70, cooling heat exchanger；710, liquefied ammonia storage device；80, pressure-control valve.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the feature in embodiment can be mutually combined.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with the accompanying drawing in the embodiment of the present invention,
Technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only the present invention
The embodiment of a part rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having
Have and make the every other embodiment obtained under creative work premise, all should belong to the scope of protection of the invention.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, " second " etc.
It is for distinguishing similar object, without being used for describing specific order or precedence.Should be appreciated that the data of so use
Can exchange in the appropriate case, in order to embodiments of the invention described herein.Additionally, term " includes " and " having "
And their any deformation, it is intended that cover non-exclusive comprising, such as, contain series of steps or the process of unit,
Method, system, product or equipment are not necessarily limited to those steps or the unit clearly listed, but can include the most clearly arranging
That go out or for intrinsic other step of these processes, method, product or equipment or unit.
As described in background technology, electricity-generating method of the prior art must complete the gas phase liquid phase of water so as to high temperature heat source
Between transformation, result in the dependency to high temperature heat source excessive, so that the utilization rate of the energy is uneven.The present invention is directed to above-mentioned
Problem is studied, it is proposed that a kind of electricity generation system, as it is shown in figure 1, include ammonia pump 20, the gasification heat exchanger being sequentially communicated
30, temperature rise heat exchanger 40, gas-turbine 50 and electromotor 60, the outlet of gas-turbine 50 connects with the entrance of ammonia pump 20, and
Electricity generation system also includes: the first input channel 160, connects with the thermal source inlet of temperature rise heat exchanger 40, is used for being passed through thermal source；The
Two input channels 170, connect with the thermal source inlet of gasification heat exchanger 30, are used for being passed through thermal source.
Above-mentioned electricity generation system has, due to liquefied ammonia, the character gasified at a lower temperature, thus to the first input channel and second
Input channel input low-temperature heat source with to gasification heat exchanger and temperature rise heat exchanger overheated after, by ammonia pump to gasification heat exchanger be passed through
Liquefied ammonia can be gasified to form saturated ammonia, saturated ammonia be warmed in temperature rise heat exchanger and pressurize formation overheated ammonia,
The overheated ammonia of high pressure reduces pressure to drive gas-turbine to rotate and make electrical power generators in gas-turbine, and then by above-mentioned low-temperature heat source
Electricity generation system achieves the generating of low-temperature heat source.
In the above-mentioned electricity generation system of the present invention, in order to provide more heat to gas-turbine, it is preferable that electricity generation system includes many groups
In parallel between gasification heat exchanger 30 and temperature rise heat exchanger 40, and each group gasification heat exchanger 30 and temperature rise heat exchanger 40 one to one
Arrange.Liquefied ammonia from ammonia pump 20 is passed through in the gasification heat exchanger 30 on each parallel pipeline and gasifies as saturated ammonia, saturated
Ammonia is passed through in the temperature rise heat exchanger 40 on each parallel pipeline intensification, and the overheated ammonia coming from multiple temperature rise heat exchanger 40 is passed through
In gas-turbine 50, so that overheated ammonia reduces pressure and converts heat energy into mechanical energy, thus improve the machine produced in gas-turbine 50
Tool energy, and then improve the electric energy changed in electromotor 60 by mechanical energy, finally improve the generated energy of electromotor 60.
In the above-mentioned electricity generation system of the present invention, electricity generation system can also include: the first liquefied ammonia conveyance conduit 110, respectively with ammonia pump
The outlet of 20 connects with the liquefied ammonia entrance of gasification heat exchanger 30；First ammonia conveyance conduit 120, respectively with gasification heat exchanger 30
Ammonia outlet connect with the ammonia entrance of temperature rise heat exchanger 40；Second ammonia conveyance conduit 130, respectively with temperature rise heat exchanger 40
Ammonia outlet connect with the entrance of gas-turbine 50；Universal driving shaft 140, connection gas-turbine 50 and electromotor 60.Above-mentioned first liquid
Ammonia conveyance conduit 110 gasifies in heat exchanger 30 for being passed through by the liquefied ammonia from ammonia pump 20, the first ammonia conveyance conduit 120
Saturated ammonia for the gasification of autopneumatolysis in future heat exchanger 30 is passed through temperature rise heat exchanger 40, the second ammonia conveyance conduit 130
For the overheated ammonia from temperature rise heat exchanger 40 is passed through in gas-turbine 50.Above-mentioned pipeline is utilized ammonia pump 20, gasification to be changed
Hot device 30, temperature rise heat exchanger 40 and gas-turbine 50 are sequentially communicated, thus utilize liquefied ammonia to achieve heat energy and machinery in gas-turbine 50
Effective conversion of energy.
In the above-mentioned electricity generation system of the present invention, the second input channel 170 connects with the thermal source outlet of temperature rise heat exchanger 40, and generating
System also includes the thermal source output channel 180 connected with the thermal source outlet of gasification heat exchanger 30.Above-mentioned first input channel 160 is used
In being passed through the heat source medium of 80 DEG C of temperatures above in temperature rise heat exchanger 40, the second input channel 170 is used for will heat up heat exchanger
40 utilize heat after heat source medium be passed through gasification heat exchanger 30, thermal source output channel 180 is used for will heat up heat exchanger 40, gasification
The heat exchanger 30 heat source medium after heat is drawn.Utilize above-mentioned pipeline to will heat up heat exchanger 40 and gasification heat exchanger 30 connects successively
Logical, it is achieved thereby that the effective preheating to above-mentioned heat exchanger.
In the above-mentioned electricity generation system of the present invention, it is preferable that electricity generation system also includes pressure-control valve 80, it is arranged on gasification heat exchanger
On 30 pipelines connected with temperature rise heat exchanger 40.Utilize above-mentioned pressure-control valve can adjust the saturated of autopneumatolysis heat exchanger 30
The pressure and temperature of ammonia, so that saturated ammonia is more effectively heated after entering temperature rise heat exchanger 40 and reaches needs
Temperature.
In the above-mentioned electricity generation system of the present invention, it is preferable that above-mentioned electricity generation system also includes cooling heat exchanger 70, respectively with gas-turbine
50 connect with ammonia pump 20, and cooling heat exchanger 70 is for liquefying ammonia as liquefied ammonia.Second liquefied ammonia conveyance conduit 150 can be set
It is respectively communicated with outlet and the entrance of ammonia pump 20 of cooling heat exchanger 70, it is also possible to arrange cold with what cooling heat exchanger 70 connected
Source input channel 190, for providing low-temperature receiver to cooling heat exchanger 70.Overheated ammonia is by decompression in gas-turbine 50 and by heat energy
Being converted to mechanical energy, have the 3rd pressure and the low pressure ammonia of the 3rd temperature to be formed, low pressure ammonia is quilt in cooling heat exchanger 70
Cooling liquid and form liquefied ammonia, above-mentioned liquefied ammonia can be stored, with when next time generates electricity use, it is also possible to pass through ammonia pump
20 are passed directly to carry out in gasification heat exchanger 30 generating of next round.
In order to realize the storage to the liquefied ammonia from cooling heat exchanger 70, in a preferred embodiment, above-mentioned electricity generation system
Including the liquefied ammonia storage device 710 being arranged between cooling heat exchanger 70 and ammonia pump 20.Above-mentioned liquefied ammonia storage device 710 is used for
The liquefied ammonia of the liquefaction from cooling heat exchanger 70 is stored；In another preferred embodiment, cooling heat exchanger
The bottom of 70 can be provided with liquefied ammonia collecting tank.When carrying out next round generating, by ammonia pump 20, liquefied ammonia stored device 710
Or the liquefied ammonia extraction in liquefied ammonia collecting tank, carry out next round generating to be passed through in gasification heat exchanger 30.
In the above-mentioned electricity generation system of the present invention, above-mentioned gasification heat exchanger 30 is preferably evaporation boiler formula, above-mentioned preferred gasification heat exchange
Device 30 is capable of effectively liquefying liquefied ammonia；Above-mentioned temperature rise heat exchanger 40 is preferably tubular heat exchanger, above-mentioned preferred liter
Temperature heat exchanger 40 is capable of saturated ammonia pressure build up effectively；Above-mentioned cooling heat exchanger 70 is preferably tubular heat exchanger,
The medium of cooling can be water or air, and above-mentioned preferred cooling heat exchanger 70 is capable of the liquefaction effectively to ammonia.
According to further aspect of the application, it is provided that a kind of electricity-generating method, electricity-generating method by above-mentioned electricity generation system carry out with
Lower step: S1, the thermal source that temperature is more than 80 DEG C is passed through the first input channel and the second input channel, will heat up heat exchanger
Overheated with gasification heat exchanger；S2, by ammonia pump to gasification heat exchanger in be passed through liquefied ammonia so that liquefied ammonia gasification heat exchanger in gas
Change and formed saturated ammonia；S3, saturated ammonia is passed through temperature rise heat exchanger, so that saturated ammonia gas lift temperature form overheated ammonia；
S4, overheated ammonia is passed through gas-turbine, so that the energy of overheated ammonia is converted to mechanical energy；S5, gas-turbine are driven by mechanical energy
Dynamic electrical power generators.Wherein, the energy of above-mentioned overheated ammonia includes pressure potential and the heat of ammonia.
Above-mentioned electricity-generating method has, due to liquefied ammonia, the character gasified at a lower temperature, thus to the first input channel and second
Input channel input low-temperature heat source with to gasification heat exchanger and temperature rise heat exchanger overheated after, by ammonia pump to gasification heat exchanger be passed through
Liquefied ammonia can be gasified to form saturated ammonia, saturated ammonia be warmed in temperature rise heat exchanger and pressurize formation overheated ammonia,
The overheated ammonia of high pressure reduces pressure to drive gas-turbine to rotate and make electrical power generators in gas-turbine, and then by above-mentioned low-temperature heat source
Electricity generation system achieves the generating of low-temperature heat source.
In a preferred embodiment, also include, when electricity generation system, the cooling heat exchanger that connects respectively with gas-turbine and ammonia pump
Time, electricity-generating method also includes: S6, the heat energy of overheated ammonia form low pressure ammonia after being converted to mechanical energy, are passed through by low pressure ammonia
In cooling heat exchanger, so that low-pressure ammonia gas liquefaction forms liquefied ammonia.Overheated ammonia is by reducing pressure and converting heat energy in gas-turbine
Mechanical energy, forms low pressure ammonia, and low pressure ammonia is cooled in cooling heat exchanger and liquefies and form liquefied ammonia, can be by above-mentioned liquefied ammonia
Store, to use when next time generates electricity.It is further preferable that after execution of step S6, low-pressure ammonia gas liquefaction is formed
Liquefied ammonia is passed through to ammonia pump.Above-mentioned liquefied ammonia is passed directly to gasify in heat exchanger by ammonia pump, to carry out the generating of next round.
After execution of step S6, it is also possible to above-mentioned liquefied ammonia had been passed through before ammonia pump, the liquefied ammonia that low-pressure ammonia gas liquefaction is formed is led to
Enter to liquefied ammonia storage device, thus realize the storage to liquefied ammonia.
When above-mentioned electricity generation system includes organizing gasification heat exchanger and temperature rise heat exchanger one to one, and respectively group gasification heat exchanger and liter more
When being arranged in parallel between temperature heat exchanger, it is preferable that in step s 2, utilize ammonia pump to introduce liquefied ammonia in each gasification heat exchanger,
The saturated ammonia of formation so that liquefied ammonia gasifies in each gasification heat exchanger；And, it is preferable that in step s3, will be from each gasification
The saturated ammonia of heat exchanger is passed through and its temperature rise heat exchanger one to one, so that saturated ammonia forms overheated ammonia.By arranging
Many groups of in parallel gasification heat exchangers and temperature rise heat exchanger, to improve the mechanical energy produced in gas-turbine, and then improve in electromotor by
The electric energy of mechanical energy conversion, finally improves the generated energy of electromotor.
The electricity generation system that the application provides is further illustrated below in conjunction with embodiment.
Embodiment 1
The electricity generation system that the present embodiment provides is as it is shown in figure 1, use the electricity-generating method of this electricity generation system to comprise the following steps:
First, the steam of 120 DEG C are passed through the first input channel as thermal source, introduce two temperature rise heat exchangers and two gas successively
Change heat exchanger, and drawn by thermal source output channel；Then, start ammonia pump to introduce respectively in above-mentioned two gasification heat exchanger
Pressure is the liquefied ammonia of 4.0MPa, and the saturated ammonia atmospheric pressure utilizing pressure-control valve control said one gasification heat exchanger to be produced is
3.709MPa, temperature are 75 DEG C, and above-mentioned saturated ammonia enters in a temperature rise heat exchanger and is heated to 100 DEG C, form first
Pass by hot ammonia, utilize pressure-control valve control another gasification saturated ammonia atmospheric pressure of being produced of heat exchanger be 2.033MPa, temperature
Being 50 DEG C, above-mentioned saturated ammonia enters into and is heated to 80 DEG C in the second heat exchanger, forms second and passes by hot ammonia, above-mentioned two-way
Overheated ammonia enters into decompression in gas-turbine, to drive gas-turbine operating and the heat energy of overheated ammonia is converted to mechanical energy；Above-mentioned
The low pressure ammonia that it is 1.5549MPa that overheated ammonia reduces pressure in gas-turbine, temperature is 40 DEG C, low pressure ammonia is through cooling heat exchanger
Cooling liquid is liquefied ammonia, and is collected by liquefied ammonia collecting tank；Above-mentioned liquefied ammonia is passed through in ammonia pump, to form the circulation of medium ammonia；
The gas-turbine of operating drives generator rotation, and the electromotor of rotation converts mechanical energy into electric energy.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect: owing to liquefied ammonia has
The character gasified at a lower temperature, thus input low-temperature heat source so that gasification to be changed to the first input channel and the second input channel
Hot device and temperature rise heat exchanger overheated after, saturated ammonia can be gasified to form by ammonia pump to the gasification liquefied ammonia that is passed through of heat exchanger,
Saturated ammonia is warmed in temperature rise heat exchanger and pressurizes and forms overheated ammonia, and the overheated ammonia of high pressure reduces pressure to drive in gas-turbine
Turbine of taking offence rotates and makes electrical power generators, and then is achieved the generating of low-temperature heat source by above-mentioned low temperature heat resource power generation system.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art
For, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made, etc.
With replacement, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. an electricity generation system, it is characterised in that include the ammonia pump (20) being sequentially communicated, gasification heat exchanger (30), heat up and change
Hot device (40), gas-turbine (50) and electromotor (60), the outlet of described gas-turbine (50) and described ammonia pump (20)
Entrance connection, and described electricity generation system also includes:
First input channel (160), connects with the thermal source inlet of described temperature rise heat exchanger (40), is used for being passed through thermal source；
Second input channel (170), connects with the thermal source inlet of described gasification heat exchanger (30), is used for being passed through thermal source.
Electricity generation system the most according to claim 1, it is characterised in that described electricity generation system includes organizing described one to one more
Gasification heat exchanger (30) and described temperature rise heat exchanger (40), and respectively the described gasification heat exchanger (30) of group and described intensification are changed
Hot device is arranged in parallel between (40).
Electricity generation system the most according to claim 1, it is characterised in that described second input channel (170) is changed with described intensification
The thermal source outlet of hot device (40) connects, and described electricity generation system also includes going out with the thermal source of described gasification heat exchanger (30)
The thermal source output channel (180) of mouth connection.
Electricity generation system the most according to claim 1, it is characterised in that described electricity generation system also includes:
Pressure-control valve (80), is arranged on the pipe that described gasification heat exchanger (30) connects with described temperature rise heat exchanger (40)
On line.
Electricity generation system the most according to claim 1, it is characterised in that described electricity generation system also includes cooling heat exchanger (70),
Connecting with described gas-turbine (50) and described ammonia pump (20) respectively, described cooling heat exchanger (70) is for by ammonia
Liquefaction is liquefied ammonia.
Electricity generation system the most according to claim 5, it is characterised in that described electricity generation system also includes that being arranged at described cooling changes
Liquefied ammonia storage device between hot device (70) and described ammonia pump (20).
7. an electricity-generating method, it is characterised in that described electricity-generating method is by the generating system according to any one of claim 1 to 6
System follows the steps below:
S1, the thermal source that temperature is more than 80 DEG C is passed through the first input channel and the second input channel, with to temperature rise heat exchanger
Preheat with gasification heat exchanger；
S2, in described gasification heat exchanger, it is passed through liquefied ammonia by ammonia pump, so that described liquefied ammonia is in described gasification heat exchanger
Gasify and form saturated ammonia；
S3, described saturated ammonia is passed through described temperature rise heat exchanger, so that described saturated ammonia gas lift temperature form overheated ammonia；
S4, described overheated ammonia is passed through gas-turbine, so that the energy of described overheated ammonia is converted to mechanical energy；
S5, described gas-turbine drive described electrical power generators by described mechanical energy.
Electricity-generating method the most according to claim 7, it is characterised in that described electricity generation system is the generating described in claim 5
System, described electricity-generating method also includes:
S6, the heat energy of described overheated ammonia form low pressure ammonia after being converted to mechanical energy, and described low pressure ammonia is passed through cooling
In heat exchanger, so that described low-pressure ammonia gas liquefaction forms liquefied ammonia.
Electricity-generating method the most according to claim 8, it is characterised in that after having performed described step S6, by described low-pressure ammonia
The liquefied ammonia that gas liquefaction is formed is passed through to described ammonia pump.
Electricity-generating method the most according to claim 8, it is characterised in that described electricity generation system is the generating described in claim 6
System, after having performed described step S6, is passed through the liquefied ammonia that described low-pressure ammonia gas liquefaction is formed to liquefied ammonia storage device.
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| CN101929360A (en) * | 2010-09-02 | 2010-12-29 | 上海交通大学 | Medium-low temperature heat source generating set based on energy cascade utilization and thermal circulation method thereof |
| CN102230400A (en) * | 2011-05-24 | 2011-11-02 | 唐应吉 | Device for generating electricity by using dead steam discharged by steam turbine |
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