CN216720932U - Frequency modulation power supply and power generation system based on internal combustion engine - Google Patents
Frequency modulation power supply and power generation system based on internal combustion engine Download PDFInfo
- Publication number
- CN216720932U CN216720932U CN202220325732.8U CN202220325732U CN216720932U CN 216720932 U CN216720932 U CN 216720932U CN 202220325732 U CN202220325732 U CN 202220325732U CN 216720932 U CN216720932 U CN 216720932U
- Authority
- CN
- China
- Prior art keywords
- input
- output
- output end
- input end
- combustion engine
- 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.)
- Active
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 81
- 238000010248 power generation Methods 0.000 title claims abstract description 25
- 239000003245 coal Substances 0.000 claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000000746 purification Methods 0.000 claims description 17
- 238000003860 storage Methods 0.000 claims description 8
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 152
- 230000015572 biosynthetic process Effects 0.000 description 91
- 238000003786 synthesis reaction Methods 0.000 description 91
- 239000000446 fuel Substances 0.000 description 36
- 238000007664 blowing Methods 0.000 description 24
- 239000002893 slag Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 10
- 229910002091 carbon monoxide Inorganic materials 0.000 description 10
- 239000003795 chemical substances by application Substances 0.000 description 9
- 239000012535 impurity Substances 0.000 description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 9
- 239000000843 powder Substances 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 230000008878 coupling Effects 0.000 description 8
- 238000010168 coupling process Methods 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010923 batch production Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 125000001967 indiganyl group Chemical group [H][In]([H])[*] 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The application provides a frequency modulation power supply and power generation system based on internal-combustion engine, the frequency modulation power supply includes coal-fired generating set and internal-combustion engine generating set, wherein: the coal-fired power generating set comprises a first generator, a steam turbine, a boiler, a coal mill, a synthetic gas producer, a heating component and a condenser, and the internal combustion engine power generating set comprises a second generator, a heat exchange component and an internal combustion engine; the second output end of the steam turbine is connected with the first input end of the synthetic gas producer, the second output end of the coal mill is connected with the second input end of the synthetic gas producer, the first output end of the synthetic gas producer is connected with the second input end of the boiler, the second output end of the synthetic gas producer is connected with the third input end of the boiler, the third output end of the synthetic gas producer is connected with the first input end of the heat exchange assembly, and the first output end of the heat exchange assembly is connected with the input end of the internal combustion engine. This application can improve frequency modulation effect.
Description
Technical Field
The application relates to the technical field of power generation, in particular to a frequency modulation power supply and a power generation system based on an internal combustion engine.
Background
In the power generation system, a coal electric machine set bears most of the peak-load and frequency-modulation tasks of the power generation system. The high-efficiency flexible internal combustion engine has the advantages of high efficiency, flexibility, peak-shaving frequency modulation speed, high energy density, strong durability, safety and reliability, can simultaneously and greatly provide deep peak shaving and peak ejecting capabilities, is a high-quality peak-shaving frequency modulation resource, and can improve the frequency modulation speed through the coupling of the internal combustion engine at present. However, the internal combustion engine is difficult to apply in the areas with scarce natural gas, and the areas with abundant natural gas have the problem of insufficient natural gas supply in winter, so that the frequency modulation effect is poor.
SUMMERY OF THE UTILITY MODEL
The application provides a frequency modulation power supply and power generation system based on internal-combustion engine to solve the relatively poor problem of frequency modulation effect.
In a first aspect, an embodiment of the present application provides a frequency modulation power supply based on an internal combustion engine, including a coal-fired power generating unit and an internal combustion engine power generating unit, wherein: the coal-fired power generating unit comprises a first generator, a steam turbine, a boiler, a coal mill, a synthetic gas producer, a heating assembly and a condenser, and the internal combustion engine power generating unit comprises a second generator, a heat exchange assembly and an internal combustion engine;
the first output end of the coal mill is connected with the first input end of the boiler, the output end of the boiler is connected with the input end of the steam turbine, the first output end of the steam turbine is connected with the input end of the first generator, the second output end of the steam turbine is connected with the first input end of the synthetic gas producer, the second output end of the coal mill is connected with the second input end of the synthetic gas producer, the first output end of the synthetic gas producer is connected with the second input end of the boiler, the second output end of the synthetic gas producer is connected with the third input end of the boiler, the third output end of the synthetic gas producer is connected with the first input end of the heat exchange component, the first output end of the heat exchange component is connected with the input end of the internal combustion engine, the output end of the internal combustion engine is connected with the input end of the second generator, and the third output end of the steam turbine is connected with the input end of the steam condenser, the output of condenser is connected heating element's first input, heating element's first output is connected the fourth input of boiler, heating element's second output is connected heat exchange component's second input, heat exchange component's second output is connected heating element's second input, heating element's third output is connected heat exchange component's third input, heat exchange component's third output is connected heating element's third input, heat exchange component's fourth output is connected the fourth input of boiler.
In a second aspect, an embodiment of the present application further provides a power generation system, where the power generation system includes the frequency-modulated power supply disclosed in the first aspect of the embodiment of the present application.
Like this, in this application embodiment, steam that the steam turbine produced among the coal fired power generation unit can input to synthetic gas producer, as synthetic gas producer prepares the gasifying agent of synthetic gas, and the buggy that the coal pulverizer produced can input to synthetic gas producer, as the fuel of synthetic gas producer preparation synthetic gas, the synthetic gas of synthetic gas producer preparation can input to internal-combustion engine generating set, as internal-combustion engine generating set's fuel, thereby pass through synthetic gas producer realize coal fired power generation set with the mode of internal-combustion engine generating set coupling, for the internal-combustion engine provides fuel, ensures the frequency modulation power can normally work, promotes the frequency modulation effect.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a frequency modulation power supply provided in an embodiment of the present application;
FIG. 2 is a schematic diagram of a syngas production process provided by an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," and the like in the embodiments of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Further, as used herein, "and/or" means at least one of the connected objects, e.g., a and/or B and/or C, means 7 cases including a alone, B alone, C alone, and both a and B present, B and C present, both a and C present, and A, B and C present.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a frequency modulation power supply provided in an embodiment of the present application, and as shown in fig. 1, the frequency modulation power supply includes a coal-fired power generating unit and an internal combustion engine power generating unit, where: the coal-fired power generating unit comprises a first generator 101, a steam turbine 102, a boiler 103, a coal pulverizer 104, a synthetic gas producer 105, a heating assembly 106 and a condenser 107, and the internal combustion engine power generating unit comprises a second generator 201, a heat exchange assembly 202 and an internal combustion engine 203;
a first output end of the coal pulverizer 104 is connected with a first input end of the boiler 103, an output end of the boiler 103 is connected with an input end of the steam turbine 102, a first output end of the steam turbine 102 is connected with an input end of the first generator 101, a second output end of the steam turbine 102 is connected with a first input end of the synthetic gas producer 105, a second output end of the coal pulverizer 104 is connected with a second input end of the synthetic gas producer 105, a first output end of the synthetic gas producer 105 is connected with a second input end of the boiler 103, a second output end of the synthetic gas producer 105 is connected with a third input end of the boiler 103, a third output end of the synthetic gas producer 105 is connected with a first input end of the heat exchange component 202, a first output end of the heat exchange component 202 is connected with an input end of the internal combustion engine 203, and an output end of the internal combustion engine 203 is connected with an input end of the second generator 201, the third output end of the steam turbine 102 is connected with the input end of the condenser 107, the output end of the condenser 107 is connected with the first input end of the heating component 106, the first output end of the heating component 106 is connected with the fourth input end of the boiler 103, the second output end of the heating component 106 is connected with the second input end of the heat exchange component 202, the second output end of the heat exchange component 202 is connected with the second input end of the heating component 106, the third output end of the heating component 106 is connected with the third input end of the heat exchange component 202, the third output end of the heat exchange component 202 is connected with the third input end of the heating component 106, and the fourth output end of the heat exchange component 202 is connected with the fourth input end of the boiler 103.
It can be understood that the single generator of the coal-fired generator set has larger scale, can meet the requirement of large-scale frequency modulation, and has higher peak-load and frequency modulation tolerance, but because of having equipment with larger inertia such as the boiler 103 and the steam turbine 102, the response speed during the frequency modulation operation is lower, and the internal combustion engine generator set can convert the heat energy emitted by the fuel into electric energy by burning the fuel in the internal unit, and has the characteristics of high peak-load and frequency modulation rate, long service life, long-time continuous bidirectional frequency modulation and the like.
The coal mill 104 crushes and grinds coal briquettes to provide fuel for the boiler 103, and the coal dust generated by the coal mill 104 may be input into the synthesis gas producer 105 to be used as a raw material for preparing synthesis gas by the synthesis gas producer 105, and the fuel in a coal dust state may increase a surface area of the fuel to facilitate combustion and reaction in the synthesis gas producer 105. It will be appreciated that the above-described main chemical reaction formula in the synthesis gas producer 105 is as follows:
C+O2＝CO2(combustion temperature rise phase);
C+H2O＝CO+H2(synthesis gas preparation phase);
wherein the fuel of the synthetic gas producer 105 is coal powder (C), and the gasifying agent is steam (H)2O). In the combustion temperature rise stage, the coal powder (C) and oxygen (O) in the air2) React to form carbon dioxide (CO)2) (ii) a In the synthesis gas production stage, coal fines (C) are mixed with steam (H)2O) to carbon monoxide (CO) and hydrogen (H)2)。
In the synthesis gas generating furnace 105, a batch process can be used for preparing the synthesis gas, and the method specifically comprises the following six stages: (1) an air blowing stage, in which part of fuel in the furnace is combusted under the action of blown air, a fuel layer is heated, the temperature is raised, heat is stored, and blown air is discharged from the upper part; (2) in the steam blowing-out stage, steam enters the material layer from the lower part of the furnace, and the air in the furnace is exhausted to ensure safety, so that residual blowing air is discharged from a chimney; (3) in the primary upper blowing gas stage, steam enters the material layer from the lower part of the furnace, and is subjected to synthesis gas reaction in the furnace to prepare synthesis gas, and the synthesis gas is sent out from the upper part of the furnace and is sent to an internal combustion engine generator set; (4) in the lower blowing gas stage, steam enters the fuel layer from the upper part of the furnace, high temperature gas production at the upper part of the fuel layer is utilized to equalize the temperature in the furnace, and meanwhile, synthetic gas is produced and is sent out from the lower part of the furnace to be sent to an internal combustion engine generator set; (5) in the secondary up-blowing gas stage, steam enters the material layer from the lower part of the furnace, and is subjected to synthesis gas reaction in the furnace to prepare synthesis gas, and the synthesis gas is sent out from the upper part of the furnace and is sent to an internal combustion engine generator set; (6) and in the air blowing-out stage, steam is stopped to be fed, air is fed from the lower part of the furnace, and the synthesis gas remained in the furnace and in the pipeline is blown out from the furnace and is fed into the internal combustion engine generator set.
Optionally, as shown in fig. 1, the fm power supply further includes a purification apparatus 400, a first output end of the heat exchange assembly 202 is connected to an input end of the purification apparatus 400, and an output end of the purification apparatus 400 is connected to an input end of the internal combustion engine 203.
It is understood that the synthesis gas produced by the synthesis gas producer 105 may be first introduced into the purification device 400, purified and then introduced into the internal combustion engine generator set. Specifically, the purification apparatus 400 can remove impurities such as particulates and tar by condensation and electrostatic trapping to obtain a cooled and purified synthesis gas, and the synthesis gas is supplied as a fuel to the internal combustion engine 203.
In this embodiment, the syngas is purified by the purification apparatus 400 and then fed into the internal combustion engine 203 as fuel, thereby improving the power generation effect of the internal combustion engine 203.
In the embodiment of the present invention, the synthesis gas generated by the synthesis gas generating furnace 105 may be used as the fuel of the internal combustion engine generator set, the coal pulverizer 104 in the coal-fired generator set may be used to provide the coal powder for the synthesis gas generating furnace 105, and the steam turbine 102 in the coal-fired generator set may be used to provide the gasification agent steam for the synthesis gas generating furnace 105, so that the synthesis gas generating furnace 105 may react with the coal powder and the steam inside, and provide the synthesis gas for the internal combustion engine generator set, thereby implementing the coupling between the coal-fired generator set and the internal combustion engine generator set. In addition, the steam provided by the steam turbine 102 for the synthesis gas generating furnace 105 may be low-pressure cylinder extraction steam, the temperature and the pressure meet the parameter requirements of the synthesis gas generating furnace 105 for preparing synthesis gas, and meanwhile, the heat energy utilization efficiency of the coal-fired power generating unit can be improved by utilizing low-quality steam.
Further, the synthesis gas (mainly comprising H) is produced by the synthesis gas producer 1052With CO, in addition to certain methane (CH)4) Slag and blowing gas can be obtained in the process, specifically, the slag is generated after the coal powder is combusted, and the slag still has a certain carbon content and has latent heat, so that the slag can be directly sent to a boiler 103 in a coal-fired power generating unit for combustion to recover the heat in the slag; before the synthesis gas is prepared, the air passes through the synthesis gas generating furnace 105, the blowing gas with higher heat quality is generated, and considerable sensible heat exists, and meanwhile, the components in the blowing gas comprise CO and H2In the presence of considerable latent heatBlowing gas is considered to be introduced into a hearth of a coal-fired unit boiler 103 for combustion to give play to CO and H2While the sensible heat is utilized to support the temperature of the hearth, so that the latent heat and the sensible heat of the blowing gas are recovered.
In the embodiment of this application, the steam that steam turbine 102 produced among the coal fired power generation unit can input to synthetic gas producer 105, as the gasifying agent of synthetic gas producer 105 preparation synthetic gas, and the buggy that the coal pulverizer 104 produced can input to synthetic gas producer 105, as the fuel of synthetic gas producer 105 preparation synthetic gas, the synthetic gas of synthetic gas producer 105 preparation can input to internal-combustion engine generating set, as internal-combustion engine generating set's fuel, thereby pass through synthetic gas producer 105 realize coal fired power generation set with the mode of internal-combustion engine generating set coupling, for internal-combustion engine 203 provides fuel, ensures the frequency modulation power can normally work, promotes the frequency modulation effect.
In addition, in the process of preparing the synthesis gas by the synthesis gas generating furnace 105, coal slag and blowing gas can be generated, the coal slag can be input into the boiler 103 to be combusted, the heat in the coal slag is recovered, and the full utilization of the heat is realized; sensible heat exists in the generated blowing gas, and the blowing gas contains CO and H2Considerable latent heat exists, which can be fed to the boiler 103 for combustion, giving off CO and H2The sensible heat of the blowing gas is utilized to support the temperature of the hearth of the boiler 103, the sensible heat and the latent heat of the blowing gas are fully utilized, and the energy utilization rate is improved.
And after the synthesis gas is prepared by the synthesis gas generating furnace 105, the synthesis gas is firstly input into the heat exchange assembly 202 and coupled with the heating assembly 106 of the coal-fired power generating unit, so that the feed water of the boiler 103 is heated, and the sensible heat of the synthesis gas can be utilized to reduce the energy consumption of the heating assembly 106.
Optionally, as shown in fig. 1, the heating assembly 106 includes a condensing pump 1061, a low-pressure heater 1062, a deaerator 1063, a water feed pump 1064, and a high-pressure heater 1065, wherein:
the output end of the condenser 107 is connected with the input end of the condensate pump 1061, the output end of the condensate pump 1061 is connected with the input end of the low-pressure heater 1062, the output end of the low-pressure heater 1062 is connected with the input end of the deaerator 1063, the output end of the deaerator 1063 is connected with the input end of the feed water pump 1064, the output end of the feed water pump 1064 is connected with the input end of the high-pressure heater 1065, and the output end of the high-pressure heater 1065 is connected with the fourth input end of the boiler 103;
the output end of the condensing pump 1061 is connected to the second input end of the heat exchange assembly 202, the second output end of the heat exchange assembly 202 is connected to the input end of the deaerator 1063, the output end of the feed water pump 1064 is connected to the third input end of the heat exchange assembly 202, and the third output end of the heat exchange assembly 202 is connected to the fourth input end of the boiler 103.
The heat exchange module 202 is connected in parallel to the high pressure heater 1065 and the low pressure heater 1062, that is, in the process of heating the feed water of the boiler 103, the heat exchange module 202 performs the same heating function as the high pressure heater 1065 and the low pressure heater 1062 by the heat exchange between the synthesis gas and the feed water, and the sensible heat of the synthesis gas can be fully utilized.
In this embodiment, the steam generated by the steam turbine 102 is condensed and heated by the condensing pump 1061, the low-pressure heater 1062, the deaerator 1063, the feed water pump 1064, and the high-pressure heater 1065, and is used as feed water for the boiler 103, thereby realizing internal circulation of the coal-fired power generator set.
Optionally, as shown in fig. 1, the heat exchange assembly 202 comprises a first heat exchanger 2021 and a second heat exchanger 2022, a third output of the synthesis gas producer 105 is connected to a first input of the first heat exchanger 2021, a first output of the first heat exchanger 2021 is connected to a first input of the second heat exchanger 2022, and a first output of the second heat exchanger 2022 is connected to an input of the internal combustion engine 203;
the output end of the condensation pump 1061 is connected to a second input end of the second heat exchanger 2022, and a second output end of the second heat exchanger 2022 is connected to the input end of the deaerator 1063;
an output end of the feed water pump 1064 is connected to a second input end of the first heat exchanger 2021, and a second output end of the first heat exchanger 2021 is connected to a fourth input end of the boiler 103.
The output end of the condensing pump 1061 is connected to the second input end of the second heat exchanger 2022, the second output end of the second heat exchanger 2022 is connected to the input end of the deaerator 1063, the output end of the condensing pump 1061 is connected to the input end of the low-pressure heater 1062, and the output end of the low-pressure heater 1062 is connected to the input end of the deaerator 1063, that is, the second heat exchanger 2022 is connected in parallel to the low-pressure heater 1062, and both of them can heat the water output by the condensing pump 1061; an output end of the feed water pump 1064 is connected to a second input end of the first heat exchanger 2021, a second output end of the first heat exchanger 2021 is connected to a fourth input end of the boiler 103, an output end of the feed water pump 1064 is connected to an input end of the high pressure heater 1065, and an output end of the high pressure heater 1065 is connected to a fourth input end of the boiler 103, that is, the first heat exchanger 2021 and the high pressure heater 1065 are connected in parallel, so that water output by the feed water pump 1064 can be heated.
It can be understood that the synthesis gas generated by the synthesis gas generator 105 firstly enters the first heat exchanger 2021 for heat exchange, and then enters the second heat exchanger 2022 for heat exchange, and then enters the internal combustion engine 203 as the fuel of the internal combustion engine 203, during the above process, the sensible heat of the synthesis gas entering the first heat exchanger 2021 is higher than the sensible heat of the synthesis gas entering the second heat exchanger 2022, so that the synthesis gas can respectively correspond to the high-pressure heater 1065 and the low-pressure heater 1062, thereby realizing the gradual heating of the feed water of the boiler 103 and improving the utilization rate of the sensible heat of the synthesis gas.
In this embodiment, the synthesis gas generated by the synthesis gas generator 105 passes through the first heat exchanger 2021 and the second heat exchanger 2022, so that the sensible heat of the synthesis gas can be recovered.
Optionally, as shown in fig. 1, the fm power supply further includes a first valve 301, a second valve 302, a third valve 303, and a fourth valve 304, an output end of the feedwater pump 1064 is connected to a first end of the first valve 301, a second end of the first valve 301 is connected to an input end of the low-pressure heater 1062, a third end of the first valve 301 is connected to a first end of the second valve 302, and a second end of the second valve 302 is connected to a second input end of the first heat exchanger 2021;
an output end of the feed water pump 1064 is connected to a first end of the third valve 303, a second end of the third valve 303 is connected to an input end of the high-pressure heater 1065, a third end of the third valve 303 is connected to a first end of the fourth valve 304, and a second end of the fourth valve 304 is connected to a second input end of the second heat exchanger 2022.
In this embodiment, the amount of water to be heated by the second heat exchanger 2022 can be controlled by the first valve 301 and the second valve 302, and the amount of water to be heated by the first heat exchanger 2021 can be controlled by the third valve 303 and the fourth valve 304, so that the respective heating of the boiler 103 by the heat exchange module 202 and the heating module 106 can be flexibly adjusted according to the synthesis gas produced by the synthesis gas generator 105.
Optionally, as shown in fig. 1, the fm power supply further includes an air storage device 500, an output end of the purifying device 400 is connected to an input end of the air storage device 500, and an output end of the air storage device 500 is connected to an input end of the internal combustion engine 203.
The synthesis gas generated by the synthesis gas generating furnace 105 may be stored in the gas storage device 500, and may supply fuel to the internal combustion engine 203 to increase the power generation amount or decrease the synthesis gas supplied to the internal combustion engine 203 to decrease the power generation amount based on the frequency modulation signal received by the frequency modulation power supply.
In this embodiment, the gas storage device 500 can store the synthesis gas purified by the purification device 400, and supply the synthesis gas to the internal combustion engine 203 when the power generation amount needs to be increased, thereby ensuring the realization of frequency modulation.
For ease of understanding, specific examples are as follows:
the application provides a power generation system of an internal combustion engine coupled coal-fired unit, which is a system that a synthesis gas producer supplies fuel to an internal combustion engine and is coupled with the coal-fired unit, can ensure the reliability of the fuel supply of the coupled system, and simultaneously exerts the power generation capability of the internal combustion engine coupled coal-fired unit and provides high-quality peak regulation and frequency modulation for the system. In the coupling system, the synthetic gas producer is coupled with the coal-fired unit respectively at input and output, the fuel coal powder and the gasifying agent vapor come from the coal-fired unit in the input aspect, and the sensible heat and the latent heat of the blowing gas, the latent heat of the slag and the sensible heat of the synthetic gas are coupled with a boiler of the coal-fired unit and a high-low pressure heater respectively in the output aspect, so that the fuel source of the internal combustion engine is ensured, the efficiency of the whole coupling system is improved, the investment of waste heat recovery equipment is saved, and the economical efficiency is improved. In addition, after the synthesis gas is cooled by thermal coupling, impurities such as particles and tar are removed by a purification device, and finally the synthesis gas is used as fuel to enter an internal combustion engine. The power generation system of the internal combustion engine coupled coal-fired unit is shown in figure 1.
In the embodiment of the application, the fuel of the internal combustion engine is synthesis gas, and the synthesis gas is mainly H2With CO, in addition to a certain amount of CO2Hydrogen sulfide (H)2S)、O2、CH4And nitrogen (N)2) Specific components and ratios are shown in table 1.
TABLE 1
The synthesis gas may be prepared by a batch process, using a synthesis gas producer. The main chemical reaction formula is as follows:
C+O2＝CO2(combustion temperature rise phase);
C+H2O＝CO+H2(synthesis gas preparation phase);
the fuel of the synthetic gas producer is coal powder, and the gasifying agent is steam. In the embodiment of the application, the steam source for preparing the synthesis gas by the generating furnace is the steam extraction of the low-pressure cylinder of the steam turbine of the existing coal-fired unit, the temperature and the pressure of the steam extraction meet the parameter requirements of the gasifying agent prepared by the generating furnace, and meanwhile, the heat energy utilization efficiency of the coal-fired unit can be improved by utilizing low-quality steam; the coal powder is obtained from the coal mill of the existing coal-fired unit, and the coal mill can generate high-quality coal powder which is favorable for combustion and is beneficial to the reaction. Therefore, a fuel source of the generating furnace is not required to be newly built or externally provided, specifically, a fuel and gasifying agent source for preparing the generating furnace and temperature parameters are shown in fig. 2, in the generating furnace, pulverized coal generated by a coal mill enters from the top of the generating furnace and burns, the pulverized coal gradually becomes slag and reaches the bottom of the generating furnace, and the temperature change is shown by a curve corresponding to the pulverized coal and the slag in fig. 2; the low-pressure cylinder of the steam turbine is pumped from the bottom of the furnace, participates in the synthesis gas preparation process as a gasifying agent, and generates synthesis gas which is output from the top of the furnace, and the temperature change of the synthesis gas is shown as the corresponding curve of steam and synthesis gas in figure 2.
The embodiment of the application combines an intermittent method to prepare the synthesis gas, and provides a thermal coupling technical scheme of a coal-electric unit, an internal combustion engine and a synthesis gas producer. Batch processes typically employ a six-stage cycle of operation, including: (1) an air blowing stage, in which part of fuel in the furnace is combusted under the action of blown air, a fuel layer is heated, the temperature is raised, heat is stored, and blown air is discharged from the upper part; (2) in the steam blowing-out stage, steam enters the material layer from the lower part of the furnace, and the air in the furnace is exhausted to ensure safety, so that residual blowing air is discharged from a chimney; (3) in the primary blowing gas stage, steam enters the material layer from the lower part of the furnace, and is subjected to synthesis gas reaction in the furnace to prepare synthesis gas, and the synthesis gas is sent out from the upper part of the furnace and is sent into an impurity purification system; (4) in the lower blowing gas stage, steam enters the fuel layer from the upper part of the furnace, high temperature gas production at the upper part of the fuel layer is utilized to equalize the temperature in the furnace, synthesis gas is produced at the same time, and the synthesis gas is sent out from the lower part of the furnace and sent into an impurity purification system; (5) in the secondary blowing gas stage, steam enters the material layer from the lower part of the furnace, and is subjected to synthesis gas reaction in the furnace to prepare synthesis gas, and the synthesis gas is sent out from the upper part of the furnace and is sent into an impurity purification system; (6) and in the air blowing-out stage, steam is stopped, air is fed from the lower part of the furnace, so that the synthesis gas remained in the furnace and in the pipeline is blown out from the furnace, and the impurity purification system is adopted.
Because the air passes through the furnace in the first stage, the blowing gas with higher heat quality is generated, and considerable sensible heat exists, and meanwhile, the components in the blowing gas containCO and H2The blowing gas is considered to be introduced into a boiler hearth of the coal-fired unit to be combusted due to the existence of considerable latent heat, and CO and H are exerted2While the sensible heat is utilized to support the temperature of the hearth, so that the latent heat and the sensible heat of the blowing gas are recovered. The synthesis gas is used as the fuel of the internal combustion engine, the latent heat of the synthesis gas is mainly utilized, after impurities of the upblown synthesis gas generated by the generator are removed through the impurity purification system, the purified synthesis gas still has high sensible heat quality, namely, the purified synthesis gas still has objective sensible heat, the purified synthesis gas can be subjected to heat exchange with water in the high-pressure heater through the heat exchanger successively and then subjected to heat exchange with circulating water of the low-pressure heater, and therefore the sensible heat of the synthesis gas is recovered. In the process of preparing the synthetic gas, the coal in the producer generates slag after being combusted and is removed from the producer, and the slag still has a certain carbon content and has latent heat, and is directly sent to a boiler of a coal-fired unit for combustion, so that the heat in the slag is recovered. Finally, the cooled synthesis gas after sensible heat recovery passes through a purification device, impurities such as particles and tar are removed through condensation and electrostatic trapping, and the cooled and purified synthesis gas is obtained and is used as fuel to be introduced into an internal combustion engine.
The embodiment of the application further provides a power generation system, and the power generation system comprises the frequency modulation power supply based on the internal combustion engine. It should be noted that the power generation system provided in the embodiment of the present application includes all technical features in the foregoing internal combustion engine-based frequency modulation power supply embodiment, and can achieve the same technical effects, and for avoiding repetition, details are not described here again.
While the foregoing is directed to the preferred embodiment of the present application, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the disclosure, and it is intended that such changes and modifications be considered as within the scope of the disclosure.
Claims (7)
1. The utility model provides a frequency modulation power based on internal-combustion engine which characterized in that, includes coal-fired generating set and internal-combustion engine generating set, wherein: the coal-fired power generating unit comprises a first generator, a steam turbine, a boiler, a coal mill, a synthetic gas producer, a heating component and a condenser, and the internal combustion engine power generating unit comprises a second generator, a heat exchange component and an internal combustion engine;
the first output end of the coal mill is connected with the first input end of the boiler, the output end of the boiler is connected with the input end of the steam turbine, the first output end of the steam turbine is connected with the input end of the first generator, the second output end of the steam turbine is connected with the first input end of the synthetic gas producer, the second output end of the coal mill is connected with the second input end of the synthetic gas producer, the first output end of the synthetic gas producer is connected with the second input end of the boiler, the second output end of the synthetic gas producer is connected with the third input end of the boiler, the third output end of the synthetic gas producer is connected with the first input end of the heat exchange component, the first output end of the heat exchange component is connected with the input end of the internal combustion engine, the output end of the internal combustion engine is connected with the input end of the second generator, and the third output end of the steam turbine is connected with the input end of the steam condenser, the output of condenser is connected heating element's first input, heating element's first output is connected the fourth input of boiler, heating element's second output is connected heat exchange component's second input, heat exchange component's second output is connected heating element's second input, heating element's third output is connected heat exchange component's third input, heat exchange component's third output is connected heating element's third input, heat exchange component's fourth output is connected the fourth input of boiler.
2. A frequency modulated power supply in accordance with claim 1 wherein said heating assembly comprises a condensate pump, a low voltage heater, a deaerator, a feed water pump, and a high voltage heater, wherein:
the output end of the condenser is connected with the input end of the condensate pump, the output end of the condensate pump is connected with the input end of the low-pressure heater, the output end of the low-pressure heater is connected with the input end of the deaerator, the output end of the deaerator is connected with the input end of the water-feeding pump, the output end of the water-feeding pump is connected with the input end of the high-pressure heater, and the output end of the high-pressure heater is connected with the fourth input end of the boiler;
the output end of the condensing pump is connected with the second input end of the heat exchange assembly, the second output end of the heat exchange assembly is connected with the input end of the deaerator, the output end of the water feed pump is connected with the third input end of the heat exchange assembly, and the fourth output end of the heat exchange assembly is connected with the fourth input end of the boiler.
3. A fm power supply as claimed in claim 2, wherein said heat exchange assembly includes a first heat exchanger and a second heat exchanger, a third output of said syngas generator is connected to a first input of said first heat exchanger, a first output of said first heat exchanger is connected to a first input of said second heat exchanger, and a first output of said second heat exchanger is connected to an input of said internal combustion engine;
the output end of the condensation pump is connected with the second input end of the second heat exchanger, and the second output end of the second heat exchanger is connected with the input end of the deaerator;
the output end of the feed water pump is connected with the second input end of the first heat exchanger, and the second output end of the first heat exchanger is connected with the fourth input end of the boiler.
4. A fm power supply as claimed in claim 3, further comprising a first valve, a second valve, a third valve and a fourth valve, wherein the output of said feed pump is connected to a first end of said first valve, a second end of said first valve is connected to an input of said low pressure heater, a third end of said first valve is connected to a first end of said second valve, and a second end of said second valve is connected to a second input of said first heat exchanger;
the output end of the feed water pump is connected with the first end of the third valve, the second end of the third valve is connected with the input end of the high-pressure heater, the third end of the third valve is connected with the first end of the fourth valve, and the second end of the fourth valve is connected with the second input end of the second heat exchanger.
5. A modulated frequency power supply as claimed in any one of claims 1 to 4, further comprising a purification apparatus, the first output of the heat exchange assembly being connected to an input of the purification apparatus, the output of the purification apparatus being connected to an input of the internal combustion engine.
6. A FM power supply as claimed in claim 5, further comprising a gas storage device, wherein an output of said purifying means is connected to an input of said gas storage device, and an output of said gas storage device is connected to an input of said internal combustion engine.
7. A power generation system comprising a frequency modulated power supply as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220325732.8U CN216720932U (en) | 2022-02-17 | 2022-02-17 | Frequency modulation power supply and power generation system based on internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220325732.8U CN216720932U (en) | 2022-02-17 | 2022-02-17 | Frequency modulation power supply and power generation system based on internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216720932U true CN216720932U (en) | 2022-06-10 |
Family
ID=81875686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220325732.8U Active CN216720932U (en) | 2022-02-17 | 2022-02-17 | Frequency modulation power supply and power generation system based on internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216720932U (en) |
-
2022
- 2022-02-17 CN CN202220325732.8U patent/CN216720932U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2015143955A1 (en) | Solid fuel staged gasification-combustion dual-bed polygeneration system and method | |
| CN109372636B (en) | Three-cycle integrated coal gasification fuel cell power generation system and method with zero carbon emission | |
| CN102850172B (en) | Coal chemical poly-generation process and system | |
| CN105518112A (en) | Methanation method and power plant comprising CO2 methanation of power plant flue gas | |
| JPS61266492A (en) | Method and apparatus for gasifying carbon-containing fuel | |
| CN106497609A (en) | Band CO2Gasification furnace coal powder conveying system and method in the IGCC system of trapping | |
| CN109181776B (en) | Coal-based poly-generation system and method for integrated fuel cell power generation | |
| US20100024432A1 (en) | Method for improved efficiency for IGCC | |
| Yan et al. | Performance of hydrogen and power co-generation system based on chemical looping hydrogen generation of coal | |
| CN111748380A (en) | Renewable isolated network energy system | |
| CN113882955A (en) | Gas turbine reheating combined cycle power generation system and operation method thereof | |
| CN103045308B (en) | Power generation method and system based on step conversion of hydrocarbon components of coal | |
| CN101318620A (en) | Chemical industry power multi-generation energy resource system and method for separating C02 | |
| CN108442982B (en) | Solar integrated coal-based methanol synthesis and power generation co-production system | |
| CN210006832U (en) | water gas fuel cell power generation system | |
| CN113623033A (en) | IGCC system adopting air gasification and working method thereof | |
| CN110257106B (en) | Integrated coal gasification fuel cell power generation system and method adopting coal water slurry gasification | |
| CN110218583B (en) | Integrated coal gasification fuel cell power generation system and method adopting desulfurization post-conversion process | |
| CN216720932U (en) | Frequency modulation power supply and power generation system based on internal combustion engine | |
| CN216198494U (en) | Novel gas turbine reheating combined cycle power generation device | |
| CN113292394B (en) | Coke oven gas coupling waste incineration power generation system methyl alcohol device | |
| CN116667423A (en) | Frequency modulation power supply and power generation system based on internal combustion engine | |
| CN107151720A (en) | A kind of Lurgi gasifying gas converts the system and method for producing DRI through steam | |
| Luo et al. | Capture of CO 2 from coal using chemical-looping combustion: Process simulation | |
| CN208310851U (en) | A kind of the coal-based methanol synthesis and power generating simultaneously system of integrated solar |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |