CN107355262A - A kind of thermal power plant's peaking generation system and electricity-generating control method - Google Patents
A kind of thermal power plant's peaking generation system and electricity-generating control method Download PDFInfo
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- CN107355262A CN107355262A CN201710640326.4A CN201710640326A CN107355262A CN 107355262 A CN107355262 A CN 107355262A CN 201710640326 A CN201710640326 A CN 201710640326A CN 107355262 A CN107355262 A CN 107355262A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/58—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels combined with pre-distillation of the fuel
- C10J3/60—Processes
- C10J3/64—Processes with decomposition of the distillation products
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/60—Constructional parts of cells
- C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
- F22B33/18—Combinations of steam boilers with other apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0916—Biomass
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0973—Water
- C10J2300/0976—Water as steam
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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Abstract
The invention discloses a kind of thermal power plant's peaking generation system, including：Thermal power generation module, the oxygen of electrolysis water module generation can be received and receive the synthesis gas of gas mixing generation；Booster stations, boost backward power network of electric power is conveyed；Peak regulation control platform, for sending folding instruction to switch module；Switch module, for connecting or disconnecting thermal power generation module and inverter；Inverter is used to that electrolysis water module will to be transferred to after the power inverter；Electrolysis water module, for pure water to be electrolysed；Pure water supply module, for providing pure water；Gas mixing, for gas mixing；Biogas generation module, gas mixing is conveyed to for producing biogas, and by the biogas.The beneficial effects of the invention are as follows：(1) flexibility of thermal power plant's peak regulation is improved；(2) thermal power plant's carbon intensity is reduced.
Description
Technical field
The present invention relates to power field, is specifically related to a kind of thermal power plant's peaking generation system and electricity-generating control method.
Background technology
In recent years, it is rich in Chinese three northern areas of China electricity market capacity, combustion engine, water-storage etc. can peaking power source it is rare,
It is particularly thorny between peak load regulation network and fired power generating unit flexibility, the energy of the new energy such as power network consumption wind-powered electricity generation, photoelectricity, water power and nuclear power
Power deficiency, abandon wind, abandon light, abandon water and abandon nuclear phenomenon it is serious.Cogeneration units " electricity determining by heat " mode is run, and peak modulation capacity is only
For 10% or so.Peak regulation difficulty has become in operation of power networks distinct issues the most.Current domestic thermoelectricity flexibility peak regulation changes
Make and be directed to Winter heat supply unit, summer, how peak regulation was a problem of the pendulum in face of numerous thermal power plants.In order to meet power network
Peak regulation demand, and living necessities of the power plant in keen competition, whole year are especially that non-heat supply season depth peak regulation is imperative.
In addition, global warming and reply climate change, the emission reduction tasks and 13 energy rule that Chinese Government promises to undertake
Specific requirement is proposed to the carbon intensity of the fossil-fired unit of domestic five big Power Groups in drawing, i.e., to the year two thousand twenty,
The average carbon intensity of the fossil-fired unit of five big electric power will be in below 650kgCO2/kWh.Following coal-burning power plant is required for
Annual generation load amount is maintained by buying tradable green certificates or carbon index, or just needs to carry out fuel flexibility transformation, is become
Into the thermal power plant of low-carbon emission intensity.
Secondly, largely there is combustion gas shortage of resources in China developed area, particularly winter, gas price is too high
Problem, biomass efficient pyrolytic gasification, abandon wind and abandon photoelectromotive force electrolytic hydrogen production, be the important way for solving China Gas shortage problem
Footpath.
In view of the above circumstances, it is imperative to find thermal power plant's electricity generation system that a kind of peak regulation is flexible, carbon emission amount is low.
The content of the invention
It is an object of the present invention to provide a kind of thermal power plant's peaking generation system so that thermal power plant is in the trough-electricity period
Or the period that renewable energy power generation is abundant, being capable of flexible depth peak regulation.
Specifically, the present invention is achieved through the following technical solutions：
A kind of thermal power plant's peaking generation system, thermal power plant's peaking generation system include：
Thermal power generation module, for producing electric power by way of thermal power generation, and gas mixing life can be received
Into synthesis gas；
Peak regulation control platform, for sending folding instruction to switch module；
Switch module, for connecting or disconnecting thermal power generation module and inverter；
Inverter, it is that direct current transfers to afterwards by the power inverter for receiving electric power caused by thermal power generation module
Electrolysis water module；
Electrolysis water module, for receiving the electric power of inverter conveying and receiving the pure water of pure water feed module, and will
Pure water is electrolysed, and generates hydrogen and oxygen, and the hydrogen of generation is conveyed into gas mixing by hydrogen output pipe；
Pure water supply module, for providing the pure water for electrolysis to electrolysis water module；
Gas mixing, for receiving the hydrogen of electrolysis water module generation and the biology of biogas generation module generation
Matter gas, and described two gases are mixed, synthesis gas is formed, and the synthesis gas is conveyed to thermal power generation module；
Biogas generation module, gas mixing is conveyed to for producing biogas, and by the biogas.
Preferably, the thermal power generation module includes：
The pulverized-coal fired boiler of multifuel combustion synthesis gas, for receiving First air coal dust, and the synthesis gas of gas mixing conveying,
It is additionally operable to receive boiler feedwater；The pulverized-coal fired boiler is burnt First air coal dust and synthesis gas by multi fuel burner,
The boiler feedwater is made as vapor and feeds to steam turbine, driving steam turbine work.
Preferably, the multi fuel burner being capable of combusting coal fines, biological particles, biogas, natural gas, oil and hydrogen
One kind or any several combination in gas pluralities of fuel, or pure oxygen can be received to enter boiler；The pulverized-coal fired boiler can also
Caused pulverized-coal fired boiler flue gas is led into biogas generation module, the generation for biogas.
Preferably, the biogas generation module includes：
Biomass collection tank, for biomass collection；
Pyrolytic reaction tank, for receiving biomass from biomass collection tank, it is additionally operable to obtain coal dust from pulverized-coal fired boiler
Kiln gas, husky and gas fume of combustion chamber is obtained from charing combustion chamber, be additionally operable to convey pyrolysis product to vaporizer；
Blower fan, for charcoal caused by the sand of deposition and pyrolysis to be blown into charing combustion chamber from pyrolytic reaction tank；
Combustion chamber is carbonized, the charcoal and sand that come is blowed for receiving blower fan, charcoal is burnt, by husky and generation combustion chamber
Flue gas leads to pyrolytic reaction tank；
Vaporizer, for receive pyrolytic reaction tank generation pyrolysis product, also receive heater conveying vapor and
Hot-air, and convey high-temperature biomass gas to biogas purification cooling chamber；
Biogas purifies cooling chamber, is given birth to for receiving high-temperature biomass gas, and by high-temperature biomass air cooling for normal temperature
Material gas, transfers to gas mixing.
Preferably, the biogas generation module produces biogas by biomass pyrolytic mode.
Preferably, the electrolysis water module also has oxygen output tube road, the oxygen of the electrolysis water module generation passes through
The oxygen output tube road transfers to thermal power generation module, on the oxygen output tube road, sets oxygen collection and purification system, institute
State oxygen collection and purification system to collect oxygen from electrolysis water module and purify oxygen, and the oxygen after purification is passed through
Oxygen output tube road transfers to thermal power generation module.
Preferably, on the hydrogen output pipe, Hydrogen collection cleaning system, the Hydrogen collection cleaning system are set
Hydrogen is collected from electrolysis water module and hydrogen is purified, and the hydrogen after purification is transferred into gas by hydrogen output pipe
Body mixing module.
Preferably, described biogas generation module can use biomass pyrogenation gasification or anaerobic fermentation to gasify two kinds
One or both combination in technology.
Preferably, the peak regulation control platform includes grid dispatching center and centralized control center of power plant, grid dispatching center is used
In sending peak regulation instruction to centralized control center of power plant, centralized control center of power plant instructs according to the peak regulation received, controls the switching molding
The folding of block.
A kind of thermal power plant's peaking generation control method, using foregoing thermal power plant's peaking generation system, methods described includes：
Whether peak regulation control platform judges whether current non-thermal power output is sufficient, or judge current when being low electric power consumption amount
Section, if it is yes to have any judged result, close command is sent to switch module, thermal power generation module is connected with inverter,
If judging all to be no, open command is sent to switch module, thermal power generation module is disconnected with inverter.
The beneficial effects of the invention are as follows：(1) flexibility of thermal power plant's peak regulation is improved；(2) it is strong to reduce thermal power plant's carbon emission
Degree.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of thermal power plant's peaking generation system structure diagram that first embodiment of the invention provides；
Fig. 2 is a kind of thermal power plant's peaking generation system structure diagram that second embodiment of the invention provides；
Fig. 3 is a kind of thermal power plant's peaking generation system structure diagram that third embodiment of the invention provides；
Fig. 4 is a kind of thermal power plant's peaking generation system structure diagram that fourth embodiment of the invention provides；
Fig. 5 is biogas generation module structural representation provided by the invention.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent and the consistent all embodiments of the present invention.On the contrary, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects being described in detail in claims, of the invention.
It is only merely for the purpose of description specific embodiment in terminology used in the present invention, and is not intended to be limiting the present invention.
It is also intended in " one kind " of the singulative of the invention with used in appended claims, " described " and "the" including majority
Form, unless context clearly shows that other implications.It is also understood that term "and/or" used herein refers to and wrapped
Containing the associated list items purpose of one or more, any or all may be combined.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the present invention
A little information should not necessarily be limited by these terms.These terms are only used for same type of information being distinguished from each other out.For example, do not departing from
In the case of the scope of the invention, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on linguistic context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determining ".
The present invention will be described in detail by way of examples below.
A kind of thermal power plant's peaking generation system, as shown in figure 1, thermal power plant's peaking generation system includes：
The pulverized-coal fired boiler 11 of multifuel combustion synthesis gas, for receiving First air coal dust, and the synthesis of gas mixing conveying
Gas, it is additionally operable to receive boiler feedwater；The pulverized-coal fired boiler 11 is burnt First air coal dust and synthesis gas, by the boiler
Feedwater is made as vapor and feeds to steam turbine 13, and driving steam turbine 13 works；
Steam turbine 13, the vapor for being conveyed using pulverized-coal fired boiler are operated, and driving generator 14 is generated electricity；Institute
State steam turbine 13 and exhaust steam is also transported to water steam module；
Generator 14, for being generated electricity under the driving of steam turbine 13, the generator 14 and switch module 3 and liter
The connection of pressure station 9；
Water steam module, for receiving the exhaust steam of steam turbine conveying, and boiler feedwater is made in exhaust steam and transfers to coal dust
Boiler 11.
Further, the water steam module includes：
Condenser 15, for receiving the exhaust steam of the conveying of steam turbine 13, and the exhaust steam is condensed into water, will condense what is formed
Water inputs low-pressure heater 16；
Low-pressure heater 16, for receiving the water of the condensation formation of condenser 15 and carrying out low-pressure heating, water is transferred to afterwards
Oxygen-eliminating device 17；
Oxygen-eliminating device 17, the water that vapor and low-pressure heater 16 for receiving the conveying of steam turbine 13 convey, to receiving
Water carry out deoxygenation, the water after deoxygenation is transferred into high-pressure heater 18；
High-pressure heater 18, the water after deoxygenation for receiving the conveying of oxygen-eliminating device 17, and the water after the deoxygenation is carried out
Hyperbaric heating, boiler feedwater is formed, the boiler feedwater is transferred into pulverized-coal fired boiler 11 afterwards.
Booster stations 9, for the backward power network of electric power boosting caused by thermal power generation module 1 to be conveyed；Peak regulation control platform 2,
For sending folding instruction to switch module 3；Switch module 3, for connect or break generator 14 and inverter 4；Inverter
4, for receiving electric power caused by generator 14, electrolysis water module 5 will be transferred to after the power inverter；Electrolysis water module 5, use
In the electric power and the pure water of the conveying of reception pure water supply module 6 that receive the conveying of inverter 4, and pure water is electrolysed, generates hydrogen
Gas, and the hydrogen is conveyed to by gas mixing 7 by hydrogen output pipe 51；Pure water supply module 6, for electrolysis
Water module 5 provides the pure water for electrolysis；Gas mixing 7, for receiving the hydrogen and biomass of the generation of electrolysis water module 5
The biogas that gas generation module 8 generates, and described two gases is mixed, and forms synthesis gas, and by the synthesis gas
It is conveyed to pulverized-coal fired boiler 11；Biogas generation module 8, gas is conveyed to for producing biogas, and by the biogas
Body mixing module 7.Specifically, the biogas generation module produces biogas by biomass pyrolytic mode.
The generator 14 is connected with booster stations 9 and switch module 3 simultaneously so that generator 14 can pass through liter in real time
Pressure station 9 provides electric energy to power network, meanwhile, when the switch module 3 closes, connect generator 14 and inverter 4, generator
14 also can by a part of electric energy by inverter 4 after, transfer to electrolysis water module 5, turn into the energy source of electrolysis water.
Peak regulation control platform 2 can obtain the current various status informations of whole power network, for example, the energy of peak regulation control platform 2
Enough electricity known in real time in current electric grid are in addition to coming from thermal power plant, and also part electric energy is from wind power plant, light
Power plant or hydraulic power plant etc. are lied prostrate, and can be known by thermal power generation, wind-power electricity generation, photovoltaic generation and hydroelectric electricity
Amount.In order to advocate energy-saving and emission-reduction energetically, in the enough situations that is sufficient, being sufficient for current power amount of the energy of non-thermal power generation
Down, it is necessary to reduce accounting of the electric energy of thermal power generation in power network as far as possible, but therefore thermal power plant can not stop work (fiery
Power power plant, which is stopped work, makees that huge Cost Problems can be caused), and the electric energy of thermal power generation can not be stored, exactly because also
The presence of this problem, in practice, or even occur that electric energy management mechanism abandons wind-powered electricity generation, abandons the phenomenon of water power, to ensure thermoelectricity
The work of factory, this is actually the waste to green energy resource as wind-powered electricity generation, water power.In the present invention, when peak regulation control platform is examined
When measuring the enough abundances of the energy of non-thermal power generation, being sufficient for current power amount, closure signal can be sent to switch module, opened
Close module closure so that a part of firepower electric energy is used to carry out electrolysis water, generation can stored hydrogen, wherein, make electrolysis
Hydrogen caused by water carries out mixing purifying with the biogas that biogas generation module generates, and obtains synthesis gas HCNG, synthesis
Gas HCNG can lead to pulverized-coal fired boiler, due to the addition of synthesis gas HCNG in the fuel of pulverized-coal fired boiler, compared with simple burning coal
For powder, carbon emission amount greatly reduces.Further, the synthesis gas HCNG can also be transported to gas station or be input to day
So that it is used in right gas pipe network.In addition, oxygen caused by electrolysis water can also be passed into pulverized-coal fired boiler, carry out pulverized-coal fired boiler
Oxygen-enriched combusting, realize boiler low load stable combustion.In one embodiment of the invention, can also be only defeated by electrolytically generated hydrogen
To pulverized-coal fired boiler, to promote the burning of pulverized-coal fired boiler.
Likewise, when being currently at the low electric power consumption amount stage at night, without the artificial generated energy for reducing thermal power plant, equally
Peak regulation control platform is set to send closure signal, switch module closure to switch module so that a part of firepower electric energy is used to be electrolysed
Water, so as to reduce the electric energy that thermal power plant transfers to power network, the electric energy of reduction is used to prepare synthesis gas HCNG and prepares oxygen, and made
Standby oxygen and can enough promotes thermal power generation module oxygen-enriched combusting, realizes boiler low load stable combustion.
The thermal power generation course of work is：
Pulverized-coal fired boiler 11 receives First air coal dust and synthesis gas is burnt, and boiler feedwater is vaporizated into vapor, water steams
Gas transfers to steam turbine 13, and driving steam turbine 13 operates, and a part of vapor is transferred to oxygen-eliminating device 17, while steam turbine by steam turbine 13
Caused exhaust steam is transferred to condenser 15 by 13 is condensed into water, after the water of condensation carries out low-pressure heating by low-pressure heater 16, stream
Enter oxygen-eliminating device 17, after oxygen-eliminating device 17 carries out deoxygenation using vapor to the water of inflow, then water is transferred into high-pressure heater 18 and carried out
Hyperbaric heating, the water after hyperbaric heating is finally transferred into pulverized-coal fired boiler 11 as boiler feedwater again, complete boiler feedwater
Recycle.
Further, it is provided with multi fuel burner 12 on the pulverized-coal fired boiler 11, the multi fuel burner 12 can be with
One kind or any several group in the pluralities of fuels such as combusting coal fines, biological particles, biogas, natural gas, oil and hydrogen
Close, and pure oxygen can be received to enter boiler, promote the oxygen-enriched stable burning of underload of boiler；The pulverized-coal fired boiler 11 can also
Caused pulverized-coal fired boiler flue gas is led into biogas generation module 8, the generation for biogas.
Can be by the pulverized-coal fired boiler 11, multi fuel burner 12, steam turbine 13, generator 14, condenser 15, heater
16th, the combination of oxygen-eliminating device 17 and high-pressure heater 18 is referred to as thermal power generation module 1.
Further, as shown in Fig. 2 the pure water supply module 6 includes electro-chemical water processing workshop 61 and pure water system
Standby device 62, electro-chemical water handles workshop 61 and preliminary treatment is carried out to water, and the water after preliminary treatment is transferred into pure water and prepared
Device 62, pure water preparing device 62 produce pure water and transfer to electrolysis water module 5.
Further, between pure water preparing device 62 and electrolysis water module 5, small pump 63 is also set up.
Further, as shown in figure 3, the electrolysis water module 5 also has oxygen output tube road 52, the electrolysis water mould
The oxygen that block 5 generates transfers to pulverized-coal fired boiler 11 by the oxygen output tube road 52, the oxygen is carried out with First air coal dust
Oxygen-enriched combusting is mixed, realizes boiler low load stable combustion.
Further, as shown in figure 4, on the oxygen output tube road 52, oxygen collection and purification system 521, institute are set
Oxygen collection and purification system 521 is stated to collect oxygen from electrolysis water module 5 and purify oxygen, and by the oxygen after purification
Pulverized-coal fired boiler is transferred to by oxygen output tube road 52.
Further, as shown in figure 4, on the hydrogen output pipe 51, Hydrogen collection cleaning system 511, institute are set
Hydrogen collection cleaning system 511 is stated to collect hydrogen from electrolysis water module 5 and purify hydrogen, and by the hydrogen after purification
Gas transfers to gas mixing 7 by hydrogen output pipe 51.
Further, as shown in figure 4, the peak regulation control platform 2 includes grid dispatching center 21 and centralized control center of power plant
22, grid dispatching center 21 is used to send peak regulation instruction to centralized control center of power plant 22, and centralized control center of power plant 22 is according to receiving
Peak regulation instructs, and controls the folding of the switch module 3.The grid dispatching center 21 is that a comprehensive electric energy regulation and control are flat
Platform, the generating of various energy sources (such as firepower, wind-force, waterpower, tide) in certain area (a such as city) can be obtained
Amount, can also know power consumption low-valley interval, when the generated energy of non-firepower in power network is sufficient or it is low to be currently entering power consumption
The paddy period without thermal power plant to power network excessive electric energy is provided when, grid dispatching center collects control to the power plant of thermal power plant
Center sends peak regulation instruction, after centralized control center of power plant receives peak regulation instruction, sends close command to switch module, makes switching molding
Block closes, and then connects generator and inverter, and making electric energy caused by generator, some is used for water electrolysis hydrogen production oxygen.
The biogas generation module 8 produces biogas by biomass pyrolytic mode.
Further, as shown in figure 5, the biogas generation module 8 includes：Biomass collection tank 81, for collecting
Biomass；Pyrolytic reaction tank 82, for receiving biomass from biomass collection tank 81, it is additionally operable to obtain from pulverized-coal fired boiler 11
Coal dust kiln gas, husky and gas fume of combustion chamber is obtained from charing combustion chamber, be additionally operable to convey pyrolysis product to vaporizer；Blower fan
83, for charcoal caused by the sand of deposition and pyrolysis to be blown into 84 in charing combustion chamber from pyrolytic reaction tank；Carbonize combustion chamber
84, the charcoal and sand that come are blowed for receiving blower fan, charcoal is burnt, husky and generation gas fume of combustion chamber is led into pyrolytic reaction
Tank 81；Vaporizer 85, for receiving the pyrolysis product of the generation of pyrolytic reaction tank 81, also receive the vapor that heater 86 conveys
And hot-air, and convey high-temperature biomass gas to biogas purification cooling chamber 87；Biogas purifies cooling chamber 87, for connecing
High-temperature biomass gas is received, and is normal temperature biogas by high-temperature biomass air cooling, transfers to gas mixing 7.
The process that the biogas generation module produces biogas is as follows：
The biomass being collected into is transferred to pyrolytic reaction tank by biomass collection tank, meanwhile, pyrolytic reaction tank, which also receives, to be come from
Carbonize the sand of combustion chamber, described in the coal dust kiln gas from coal-powder boiler from coal dust kiln gas temperature at 400~600 DEG C, pyrolysis
Biomass and sand in the presence of coal dust kiln gas, are carried out pyrolytic reaction by retort at a temperature of 400~500 DEG C, are generated
Product is pyrolyzed, the pyrolysis product is to include vapor, the mixed gas of carbon containing combustible gas；Pyrolytic reaction is also produced simultaneously
Raw charcoal, blower fan extract the sand deposited in charcoal caused by pyrolytic reaction and pyrolytic reaction tank out, transfer to charing combustion chamber, carbonization chamber combustion
Room temperature is burnt between 500~600 DEG C；The charcoal of input is burnt in charing combustion chamber, and caused gas fume of combustion chamber can be again
It is secondary to transfer to pyrolytic reaction tank, for pyrolytic reaction, the caused ash discharge after charcoal is burnt of charing combustion chamber.Vaporizer receives pyrolysis
Product, while vaporizer also receives vapor caused by heater and hot-air；Product, vapor and hot-air is pyrolyzed to converge
Collection produces chemical reaction in vaporizer, generates 700~1000 DEG C of high-temperature biomass gas of gasification, and vaporizer is by high-temperature biological
Matter gas transfers to biogas purification cooling chamber, and in Figure 5, the biogas purification cooling chamber bottom has coolant, and pump will
Coolant is extracted out from biogas purification cooling chamber bottom, under being drenched at the top of biogas purification cooling chamber in a manner of spraying,
To be cooled down to the high-temperature biomass gas being input in biogas purification cooling chamber, so as to generate 25 DEG C or so of normal temperature life
Material gas.
Further, described biogas generation module can use biomass pyrogenation gasification or anaerobic fermentation gasification two
One or both combination in kind technology.
Present invention also offers a kind of thermal power plant's peaking generation control method, uses any thermal power plant's peak regulations of Fig. 1~Fig. 5
Electricity generation system, methods described include：
Whether peak regulation control platform judges whether current non-thermal power output is sufficient, or judge current when being low electric power consumption amount
Section, if it is yes to have any judged result, close command is sent to switch module, generator is connected with inverter, if judging
All it is no, then sends open command to switch module, generator is disconnected with inverter.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements done etc., should be included within the scope of protection of the invention with principle.
Claims (10)
1. a kind of thermal power plant's peaking generation system, it is characterised in that thermal power plant's peaking generation system includes：
Thermal power generation module (1), for producing electric power by way of thermal power generation, and gas mixing (7) can be received
The synthesis gas of generation；
Peak regulation control platform (2), for sending folding instruction to switch module (3)；
Switch module (3), for connecting or disconnecting thermal power generation module (1) and inverter (4)；
Inverter (4), it is defeated after direct current by the power inverter for receiving electric power caused by thermal power generation module (1)
To electrolysis water module (5)；
Electrolysis water module (5), for receiving the electric power of inverter (4) conveying and receiving the pure water of pure water supply module (6) conveying,
And be electrolysed pure water, hydrogen and oxygen are generated, and the hydrogen of generation is conveyed to gas by hydrogen output pipe (51)
Mixing module (7)；
Pure water supply module (6), for providing the pure water for electrolysis to electrolysis water module (5)；
Gas mixing (7), for receiving hydrogen and biogas generation module (8) generation of electrolysis water module (5) generation
Biogas, and described two gases are mixed, form synthesis gas, and the synthesis gas is conveyed to thermal power generation mould
Block (1)；
Biogas generation module (8), gas mixing is conveyed to for producing biogas, and by the biogas
(7)。
2. thermal power plant's peaking generation system according to claim 1, it is characterised in that thermal power generation module (1) bag
Include：
The pulverized-coal fired boiler (11) of multifuel combustion synthesis gas, for receiving First air coal dust, and the synthesis gas of gas mixing conveying,
It is additionally operable to receive boiler feedwater；The pulverized-coal fired boiler is fired First air coal dust and synthesis gas by multi fuel burner (12)
Burn, the boiler feedwater is made as into vapor feeds to steam turbine, driving steam turbine work.
3. thermal power plant's peaking generation system according to claim 2, multi fuel burner is provided with the pulverized-coal fired boiler
(12), it is characterised in that the multi fuel burner (12) can combusting coal fines, biological particles, biogas, natural gas,
One kind or any several combination in oil and hydrogen pluralities of fuel, or pure oxygen can be received to enter boiler；The pulverized-coal fired boiler
(11) caused pulverized-coal fired boiler flue gas can also be led to biogas generation module (8), the generation for biogas.
4. thermal power plant's peaking generation system according to claim 2, it is characterised in that the biogas generation module
(8) include：
Biomass collection tank (81), for biomass collection；
Pyrolytic reaction tank (82), for receiving biomass from biomass collection tank (81), it is additionally operable to from pulverized-coal fired boiler (11)
Coal dust kiln gas is obtained, husky and gas fume of combustion chamber is obtained from charing combustion chamber, is additionally operable to convey pyrolysis product to vaporizer；
Blower fan (83), for charcoal caused by the sand of deposition and pyrolysis to be blown into charing combustion chamber (84) from pyrolytic reaction tank
In；
Carbonize combustion chamber (84), blow the charcoal and sand that come for receiving blower fan, charcoal is burnt, by husky and generation combustion chamber
Flue gas leads to pyrolytic reaction tank (81)；
Vaporizer (85), for receiving the pyrolysis product of pyrolytic reaction tank generation, the water for also receiving heater (86) conveying steams
Gas and hot-air, and purify cooling chamber (87) conveying high-temperature biomass gas to biogas；
Biogas purification cooling chamber (87), given birth to for receiving high-temperature biomass gas, and by high-temperature biomass air cooling for normal temperature
Material gas, transfer to gas mixing (7).
5. according to any described thermal power plant's peaking generation system of Claims 1 to 4, it is characterised in that the biogas production
Raw module produces biogas by biomass pyrolytic mode.
6. thermal power plant's peaking generation system according to claim 1, it is characterised in that the electrolysis water module (5) also has
There is oxygen output pipe (52), the oxygen of electrolysis water module (5) generation transfers to fire by the oxygen output tube road (52)
Power electricity generation module (1), on the oxygen output tube road (52), oxygen collection and purification system (521) is set, the oxygen is collected
Cleaning system (521) collects oxygen from electrolysis water module (5) and oxygen is purified, and the oxygen after purification is passed through into oxygen
Gas output pipe (52) transfers to thermal power generation module (1).
7. thermal power plant's peaking generation system according to claim 1, it is characterised in that in the hydrogen output pipe (51)
On, Hydrogen collection cleaning system (511) is set, and the Hydrogen collection cleaning system (511) collects hydrogen from electrolysis water module (5)
Gas is simultaneously purified to hydrogen, and the hydrogen after purification is transferred into gas mixing (7) by hydrogen output pipe (51).
8. according to any described thermal power plant's peaking generation system of Claims 1 to 4, it is characterised in that described biogas
Generation module can use the one or both combination in biomass pyrogenation gasification or anaerobic fermentation two kinds of technologies of gasification.
9. thermal power plant's peaking generation system according to claim 1, it is characterised in that peak regulation control platform (2) bag
Grid dispatching center (21) and centralized control center of power plant (22) are included, grid dispatching center (21) is used to send out to centralized control center of power plant (22)
Peak regulation is sent to instruct, centralized control center of power plant (22) control the folding of the switch module (3) according to the peak regulation instruction received.
10. a kind of thermal power plant's peaking generation control method, usage right requires 1~9 any thermal power plant's peaking generation system, and it is special
Sign is that methods described includes：
Peak regulation control platform judges whether current non-thermal power output is sufficient, or judges whether current be the low electric power consumption amount period,
If it is yes to have any judged result, close command is sent to switch module, thermal power generation module is connected with inverter, if sentencing
It is all no to break, then sends open command to switch module, thermal power generation module is disconnected with inverter.
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| CN114763766A (en) * | 2021-01-13 | 2022-07-19 | 新智数字科技有限公司 | Gas distributed energy system and electric energy utilization method thereof |
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Application publication date: 20171117 |