CN114484449A - Wind-solar driven solid waste treatment multi-connection device system - Google Patents
Wind-solar driven solid waste treatment multi-connection device system Download PDFInfo
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- CN114484449A CN114484449A CN202210229922.4A CN202210229922A CN114484449A CN 114484449 A CN114484449 A CN 114484449A CN 202210229922 A CN202210229922 A CN 202210229922A CN 114484449 A CN114484449 A CN 114484449A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J38/00—Regeneration or reactivation of catalysts, in general
- B01J38/04—Gas or vapour treating; Treating by using liquids vaporisable upon contacting spent catalyst
- B01J38/12—Treating with free oxygen-containing gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C13/00—Apparatus in which combustion takes place in the presence of catalytic material
- F23C13/08—Apparatus in which combustion takes place in the presence of catalytic material characterised by the catalytic material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0056—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using solid heat storage material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/30—Pyrolysing
- F23G2201/304—Burning pyrosolids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2202/00—Combustion
- F23G2202/60—Combustion in a catalytic combustion chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/508—Providing additional energy for combustion, e.g. by using supplementary heating
- F23G2900/50803—Providing additional energy for combustion, e.g. by using supplementary heating using solar energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/54601—Special features of, or arrangements for incinerators using waste heat for desalinating sea water
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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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
- Y02E60/14—Thermal energy storage
Abstract
The invention provides a multi-connection-supply device system for wind-solar driven solid waste treatment. The invention integrates solid waste pyrolysis, chemical looping combustion and advanced heat storage, supplements reaction heat energy to the pyrolysis device and the chemical looping combustion reactor by focusing sunlight, and takes the electric energy converted by wind energy as a power source of rotating equipment, so that carbon dioxide in a combustion product is easier to separate and store, abundant renewable resources such as solar energy, wind energy and the like in island regions are effectively utilized, and the consumption of traditional fossil energy is reduced; meanwhile, various resources such as power output, heat output, fresh water and the like can be provided for the outside, the reduction, harmlessness and reclamation of the island domestic garbage are realized on the spot, and the problem of shortage of power, heat and fresh water resources in island regions is solved.
Description
Technical Field
The invention belongs to the technical field of garbage treatment, relates to a device system for solid waste treatment, and particularly relates to a multi-connection device system for wind-light driven solid waste treatment.
Background
The large-scale development and construction of islands lead to the increase of the output of solid wastes of the islands, and the unreasonable behaviors of random discarding and landfill and the like cause the serious pollution to the island soil and water. The island solid waste disposal generally adopts the in-island extensive disposal, and comprises the methods of directly burying the solid waste on the island, burning on the spot, comprehensively disposing the solid waste by classification and collection, compressing the solid waste or shipping the solid waste to land, and the like. However, the solid waste treatment method has certain disadvantages due to the geographical position of the sea island and the particularity of resource conditions.
The garbage pyrolysis treatment technology utilizes the thermal instability characteristic of organic waste components in the garbage to carry out high-temperature heating decomposition under the oxygen-free or oxygen-deficient condition, and finally forms combustible gas, liquid tar and a small amount of carbon-like residues. The garbage pyrolysis treatment mode is clean, the reduction degree is high, the scale can be miniaturized, and the method is suitable for treating solid wastes such as island household garbage.
CN 206109305U discloses an utilize device of tower solar thermal decomposition living beings polygeneration, including solar energy heliostat field, solar energy collection tower, living beings feed mechanism, fluidized bed fast pyrolysis reactor and pyrolysate processing mechanism, utilize solar energy to provide the heat carrier for the pyrolysis of living beings to avoid sacrificing partial pyrolysis product, improved the economic nature of pyrolysis efficiency and pyrolysis process.
CN 106560503A discloses solar drive's living beings gasification trigeminy supplies system, and this system includes living beings pre-heater, biomass grinder, bubbling fluidized bed gasifier, whirlwind separation dust remover, first heat exchanger, condenser, water pump, slot type solar collector, tower heliostat field, internal-combustion engine generating set, lithium bromide absorption formula unit, second heat exchanger and solution absorption formula dehumidification unit, utilizes high temperature solar energy to drive the gasification of living beings, and low temperature solar energy provides the gasification oxidant, realizes the complementary integration of different grades, different renewable energy.
CN 109251753A discloses a renewable energy source synergetic and complementary combined heat and power system and process, which converts solar energy, biomass energy and domestic garbage energy, and then heat energy is supplied in a centralized manner through a heat exchange and storage system, so that the system can be used for heating and can also be used for generating cold air through a refrigerant for cooling; the biomass and the sorted household garbage are subjected to low-temperature pyrolysis respectively to generate median pyrolysis gas, and one part of the median pyrolysis gas is used as combustion-supporting gas for melting and burning of low-calorific-value garbage coke; the pyrolysis of the household garbage adopts an external heat rotary type thermal cleaning furnace to isolate air pyrolysis; the biomass energy, the solar energy and the household garbage energy are combined to realize the synergistic complementation between the energy sources, the problem of low heat value in the garbage pyrolysis melting technology is solved, and the resource utilization of the household garbage is realized.
The above disclosure discloses a method for pyrolysis treatment of solid wastes and realizes reclamation and harmlessness of wastes, but only can realize partial functional transformation such as heat supply and power generation, and for living areas with special geographical conditions such as islands, a universal device system for solid waste treatment of islands needs to be developed by combining the characteristic of abundant renewable energy resources, especially a universal multi-supply device system for wind-light driven solid waste treatment.
Disclosure of Invention
The invention aims to provide a multi-supply device system for wind-light driven solid waste treatment, which integrates solid waste pyrolysis, chemical chain combustion and advanced heat storage and realizes the recycling of island solid waste by utilizing the drive of renewable energy.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a multi-connection device system for wind-solar driven solid waste treatment, which comprises a solid waste pyrolysis unit, a chemical looping combustion and power generation unit, a seawater desalination and heat supply unit and a gas storage unit.
The solid waste pyrolysis unit comprises a pyrolysis device, a first heat storage device and a purification device; the first heat storage device is used for storing solar heat energy and supplementing the shortage of required heat for the pyrolysis device; the purification device is connected with a crude pyrolysis gas outlet of the pyrolysis device, and a filter layer is arranged inside the purification device and used for converting the crude pyrolysis gas into tar and clean pyrolysis gas.
The chemical looping combustion and power generation unit comprises a chemical looping combustion device and at least 1 group of power generation devices.
The chemical looping combustion device comprises a first reactor and a second reactor, and the first reactor is connected with a clean pyrolysis gas outlet of the purification device; the first reactor comprises a second heat storage device, and the second heat storage device is used for storing sunlight heat energy and supplementing the first reactor with insufficient heat required by reaction; the second reactor comprises a third heat storage device, and the third heat storage device is used for storing solar heat energy and supplementing the shortage of heat required by the reaction for the second reactor; the air required for the second reactor is driven by a renewable energy source.
The gas produced by the first reactor and/or the second reactor provides energy for the at least 1 group of power generation devices.
The seawater desalination and heat supply unit comprises a first heat exchanger, a second heat exchanger, a third heat exchanger, a heat reservoir and a fourth heat storage device; the mixed gas discharged from the first reactor is used as a heat source of a first heat exchanger, and the mixed gas discharged from the second reactor is used as a heat source of a second heat exchanger; after the cold sources of the first heat exchanger and the second heat exchanger are heated through heat exchange, one part of the cold sources enters the third heat exchanger, and the other part of the cold sources enters the heat reservoir provided with the fourth heat storage device.
The gas storage unit comprises a gas-liquid separator, a gas compression device and a gas storage device; the gas-liquid separator is connected with a heat source outlet of the first heat exchanger; the gas compression device compresses the gas obtained by the gas-liquid separator to the gas storage device; the gas compression device is driven by a renewable energy source.
When the multi-combined supply device is applied to wind-light driven solid waste treatment:
(1) the solid waste enters a pyrolysis device to absorb the heat of focused sunlight, pyrolysis reaction is carried out under the action of a gasification agent, generated residues are discharged, the generated crude pyrolysis gas forms clean pyrolysis gas after tar is filtered by a purification device, and when the illumination intensity is low or sufficient heat cannot be provided in cloudy days, a part of heat is released by a first heat storage device to supplement the shortage of the required heat;
(2) the clean pyrolysis gas enters a first reactor to carry out chemical looping combustion, the clean pyrolysis gas and an oxygen carrier are subjected to chemical reaction, a reduced oxygen carrier enters a second reactor to be subjected to oxidation reaction with air conveyed under the drive of renewable energy, the oxidized oxygen carrier enters the first reactor again to be subjected to chemical reaction with the clean pyrolysis gas in the first reactor, and the steps are repeated; the second heat storage device and the third heat storage device are respectively used for supplementing the shortage of heat required by the chemical reaction of the first reactor and the second reactor; the gas discharged from the first reactor and the second reactor provides energy for the power generation device;
(3) after the cold sources of the first heat exchanger and the second heat exchanger are subjected to heat exchange and temperature rise, one part of the cold sources enters a third heat exchanger, fresh water is generated after heat exchange and evaporation in the third heat exchanger, one part of the cold sources supplies heat to the outside, and the other part of the cold sources enters a heat reservoir provided with a fourth heat storage device; the gas-liquid mixture at the heat source outlet of the first heat exchanger is separated by a gas-liquid separator to obtain gas, and the gas is compressed by the gas compression device to the gas storage device under the driving of the renewable energy source.
According to the invention, the fourth heat storage device is arranged, so that the heat of the fourth heat storage device in the heat reservoir can be utilized to supplement under the condition that the original external heat supply quantity is difficult to meet the requirement, and the requirement of a heat load peak is met.
The invention can simultaneously provide various resources such as power output, thermal output, fresh water and the like for the outside, realizes the reduction, harmlessness and reclamation of the island domestic garbage on site, and solves the problem of shortage of power and fresh water resources in island areas.
Preferably, the first heat storage device is arranged at the throat part of the pyrolysis device, which is more favorable for maintaining the temperature stability in the pyrolysis process and fully decomposing harmful components.
Preferably, a first heat storage material is arranged in the first heat storage device.
Preferably, the first heat storage material comprises a carbonate-based heat storage material.
Preferably, the carbonate-based heat storage material comprises any one of sodium carbonate, calcium carbonate and lithium carbonate or a combination of at least two of the above.
Preferably, the solid waste pyrolysis unit comprises a first light gathering device, and the first light gathering device is used for reflecting and focusing sunlight on the first heat storage device.
Sunlight is reflected by the first light gathering device and focused on the first heat storage device, and a first heat storage material in the first heat storage device can effectively store sunlight heat energy and supplement the needed heat to the pyrolysis device.
Preferably, the first light concentrating means comprises a first concave light concentrating mirror.
Preferably, the gasifying agent comprises water vapor.
Preferably, the first reactor and the second reactor are connected through an oxygen carrier channel.
Preferably, the oxygen carrier channel is provided with a gas barrier structure.
The gas barrier structure is arranged to enable the oxygen carrier to move to and from the first reactor and the second reactor, and prevents gas substances in the first reactor and the second reactor from mixing with each other.
Preferably, the oxygen carrier comprises ferroferric oxide.
Preferably, a second heat storage material is arranged in the second heat storage device, a third heat storage material is arranged in the third heat storage device, and the second heat storage material and the third heat storage material are respectively and independently provided with silicon carbide.
Preferably, the chemical looping combustion device comprises a second light concentrating device, and the second light concentrating device is used for reflecting and focusing sunlight to the second heat storage device.
Preferably, the second light concentrating means comprises a second concave light collector.
Preferably, the chemical looping combustion device comprises a third light focusing device for focusing sunlight reflection on the third heat storage device.
Preferably, said third light concentrating means comprises a third concave light collector.
Preferably, the renewable energy drive comprises a wind energy drive and/or a solar energy drive.
The wind energy drive provides electric energy for the blower device and the gas compression device; the blowing device converts electric energy into kinetic energy and conveys air to the second reactor; the gas compression device converts electric energy into kinetic energy and compresses gas to the gas storage device.
The island region has abundant renewable energy sources such as wind energy, solar energy and the like, and the renewable energy sources can be effectively utilized and the consumption of fossil energy can be reduced by converting the wind energy into a power source of equipment and/or focusing and collecting the solar energy to provide required heat.
Preferably, the power generation device comprises a first turbine, a first power generator connected with the first turbine, a second turbine and a second power generator connected with the second turbine; after gas discharged by the first reactor flows through a first turbine, the gas is used as a heat source to enter a first heat exchanger, and the first turbine drives a first generator to generate electricity; and gas exhausted from the second reactor flows through a second turbine and then enters a second heat exchanger as a heat source, and the second turbine drives a second generator to generate electricity.
Preferably, the cold source comprises seawater.
The sea water resources in the island are rich, the sea water is convenient to take, the sea water is used as a cold source, drinkable fresh water is generated after heat exchange and evaporation, and the maximum utilization of the sea water resources can be realized.
Preferably, the third heat exchanger comprises a multiple effect evaporator.
Preferably, a fourth heat storage material is provided in the fourth heat storage device.
The fourth heat storage device is used for storing the heat of the hot fluid in the heat reservoir.
Preferably, the heat reservoir comprises a heat storage tank.
Preferably, the fourth heat storage material comprises a nitrate-based heat storage material.
Preferably, the nitrate-based heat storage material includes sodium nitrate and/or potassium nitrate.
Preferably, the gas compression device comprises a compressor and an electric motor.
Preferably, the gas storage means comprises a gas storage tank.
Illustratively, the operation method of the multi-supply device system for the wind-solar driven solid waste treatment comprises the following steps:
(1) the solid waste enters a pyrolysis device to absorb the heat of focused sunlight, the solid waste is subjected to pyrolysis reaction under the action of vapor of a gasifying agent, generated residues are discharged, the generated crude pyrolysis gas is filtered to form clean pyrolysis gas after tar is filtered by a purifying device, and when the illumination intensity is low or sufficient heat cannot be provided in cloudy days, a part of heat is released by a first heat storage device to supplement the shortage of the required heat;
the first heat storage material in the first heat storage device is used for storing the heat focused by the first light gathering device and can supplement the shortage of the required heat to the pyrolysis device;
(2) the clean pyrolysis gas enters a first reactor to carry out chemical looping combustion, the clean pyrolysis gas and oxygen carrier ferroferric oxide are subjected to chemical reaction, the reduced oxygen carrier enters a second reactor to be subjected to oxidation reaction with air conveyed under the drive of wind energy, the oxidized oxygen carrier enters the first reactor again to be subjected to chemical reaction with the clean pyrolysis gas in the first reactor, and the steps are repeated;
the wind energy drive provides electric energy for the blower device; the blowing device converts electric energy into kinetic energy and conveys air to the second reactor;
the second heat storage device and the third heat storage device are respectively used for supplementing the shortage of heat required by the chemical reaction of the first reactor and the second reactor; the heat stored by the second heat storage material in the second heat storage device is provided by the focused sunlight reflected by the second light condensing device, and the heat stored by the third heat storage material in the third heat storage device is provided by the focused sunlight reflected by the third light condensing device;
after gas discharged by the first reactor flows through a first turbine, the gas is used as a heat source to enter a first heat exchanger, and the first turbine drives a first generator to generate electricity; gas exhausted by the second reactor flows through a second turbine and then enters a second heat exchanger as a heat source, and the second turbine drives a second generator to generate electricity;
(3) after the seawater is used as a cold source of the first heat exchanger and the second heat exchanger for heat exchange and temperature rise, one part of the seawater enters a third heat exchanger, heat exchange and evaporation are carried out in the third heat exchanger to generate fresh water, one part of the seawater supplies heat to the outside, and the other part of the seawater enters a heat storage tank provided with a fourth heat storage device; the gas-liquid mixture at the heat source outlet of the first heat exchanger is separated by a gas-liquid separator to obtain gas, and the motor drives the compressor to compress the gas to the gas storage tank under the driving of wind energy.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention integrates solid waste pyrolysis, chemical looping combustion and advanced heat storage, supplements reaction heat energy to the pyrolysis device and the chemical looping combustion reactor by focusing sunlight, and takes the electric energy converted by wind energy as the power source of rotary equipment such as a compression device, a blast device and the like, so that the carbon dioxide in the combustion product is easier to separate and store, abundant renewable resources such as solar energy, wind energy and the like in island areas are effectively utilized, and the consumption of the traditional fossil energy is reduced; the invention can also provide various resources such as power output, thermal output, fresh water and the like for the outside, realizes the reduction, harmlessness and reclamation of the island domestic garbage on site, and solves the problem of shortage of power, thermal and fresh water resources in island areas.
(2) According to the invention, through the arrangement of the gas barrier structure, the oxygen carrier is enabled to reciprocate to the first reactor and the second reactor, so that gas substances in the first reactor and the second reactor are effectively prevented from being mixed with each other;
(3) according to the invention, different types of heat storage materials are arranged in each heat storage device, and according to the heat requirement of each reactor, the corresponding heat storage materials can exert the heat storage and release characteristics, supplement the deficiency of the required heat and maintain the stable and efficient operation of the device system.
Drawings
Fig. 1 is a schematic structural diagram of a multiple supply device system for wind-solar driven solid waste treatment provided in embodiment 1 of the present invention.
Wherein, 1, a pyrolysis furnace; 2. a first heat storage device; 3. a first concave condenser; 4. a purification device; 5. a first reactor; 6. an oxygen carrier channel; 7. a first wind power generator; 8. a second wind power generator; 9. a blower; 10. a second reactor; 11. a second concave condenser; 12. a third concave condenser; 13. a second heat storage device; 14. a third heat storage device; 15. a first turbine; 16. a first generator; 17. a second turbine; 18. a second generator; 19. a first heat exchanger; 20. a second heat exchanger; 21. a third heat exchanger; 22. a gas-liquid separator; 23. a compressor; 24. an electric motor; 25. a gas storage tank; 26. a first valve; 27. a second valve; 28. a third valve; 29. a heat storage tank; 30. a fourth heat storage device.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
Example 1
The embodiment provides a multi-connected device system for wind-solar driven solid waste treatment, which is shown in fig. 1 and comprises a solid waste pyrolysis unit, a chemical looping combustion and power generation unit, a seawater desalination and heat supply unit and a gas storage unit;
the solid waste pyrolysis unit comprises a pyrolysis furnace 1, a first heat storage device 2, a first concave condenser 3 and a purification device 4; the pyrolysis furnace 1 is provided with a solid waste inlet, a gasifying agent inlet, a residue outlet and a crude pyrolysis gas outlet, a first heat storage device 2 is arranged at the throat part of the pyrolysis furnace, a first concave collecting mirror 3 is used for reflecting sunlight and focusing the sunlight on the first heat storage device 2, a first heat storage material is arranged inside the first heat storage device 2, the first heat storage material comprises at least one of sodium carbonate, potassium carbonate or lithium carbonate, and is used for storing partial sunlight heat energy and supplementing the pyrolysis furnace 1 with the insufficient heat required; the purification device 4 is connected with a crude pyrolysis gas outlet of the pyrolysis furnace 1 through a pipeline, and meanwhile, the purification device 4 is provided with a tar outlet and a clean pyrolysis gas outlet;
the chemical-looping combustion and power generation unit comprises a first reactor 5, an oxygen carrier channel 6, a first wind driven generator 7, a blower 9, a second reactor 10, a second concave condenser 11, a third concave condenser 12, a second heat storage device 13, a third heat storage device 14, a first turbine 15, a first power generator 16, a second turbine 17 and a second power generator 18;
the first reactor 5 is connected with the second reactor 10 through an oxygen carrier channel 6, the oxygen carrier channel 6 is provided with a gas barrier structure, and the gas barrier structure is arranged to lead the oxygen carrier to move to and from the first reactor 5 and the second reactor 10 so as to prevent gas substances in the first reactor 5 and the second reactor 10 from being mixed with each other;
the first reactor 5 is connected with a clean pyrolysis gas outlet of the purification device 4, the first reactor 5 is provided with a second heat storage device 13, the second concave condenser 11 reflects sunlight and focuses the sunlight on the second heat storage device 13, and a second heat storage material (silicon carbide) for storing the solar thermal energy is arranged in the second heat storage device 13; the gas outlet of the first reactor 5 is connected to a first turbine 15, the first turbine 15 being arranged coaxially with a first generator 16; the blower 9 is connected with the second reactor 10 and is driven by the first wind driven generator 7 to provide air required by chemical looping combustion; the second reactor 10 is provided with a third heat storage device 14, the third concave collecting mirror 12 reflects and focuses sunlight on the third heat storage device 14, and a third heat storage material (silicon carbide) for storing solar heat energy is arranged in the third heat storage device 14; the gas outlet of the second reactor 10 is connected to a second turbine 17, the second turbine 17 being arranged coaxially with a second generator 18;
the seawater desalination and heat supply unit comprises a first heat exchanger 19, a second heat exchanger 20, a third heat exchanger 21, a first valve 26, a second valve 27, a third valve 28, a heat storage tank 29 and a fourth heat storage device 30; a heat source outlet of the second heat exchanger 20 is connected with a heat source inlet of the third heat exchanger 21 through a pipeline, a cold source outlet of the first heat exchanger 19 is connected with a cold source outlet of the second heat exchanger 20 through a pipeline, after the split flow, one path of the split flow enters the third heat exchanger 21 to carry out multiple-effect evaporation, the other path of the split flow is connected with inlet ends of the first valve 26 and the second valve 27 through pipelines, an outlet end of the second valve 27 and an inlet end of the third valve 28 are respectively connected with the heat storage tank 29, the first valve 26 and an outlet end of the third valve 28 are connected in an intersection manner, the heat storage tank 29 is provided with a fourth heat storage device 30, the fourth heat storage device 30 is provided with a fourth heat storage material for storing heat of hot fluid in the heat storage tank 29, and the fourth heat storage material comprises sodium nitrate and/or potassium nitrate;
the gas storage unit comprises a gas-liquid separator 22, a compressor 23, a motor 24, a second wind driven generator 8 and a gas storage tank 25; the gas-liquid separator 22 is connected with a heat source outlet of the first heat exchanger 19; the gas-liquid separator 22, the compressor 23 and the air storage tank 25 are sequentially connected through a pipeline, and the compressor 23 and the motor 24 are coaxially arranged; the second wind generator 8 supplies electric power to the electric motor 24.
When the multi-connection supply device system provided by the embodiment is applied to solid waste treatment, the method comprises the following steps:
(1) the solid waste enters the pyrolysis furnace 1, absorbs the heat of focused sunlight, is subjected to pyrolysis reaction under the action of gasification agent steam, generated residues are discharged from a bottom outlet, generated crude pyrolysis gas is filtered to form clean pyrolysis gas after tar is filtered by the purification device 4, and when the illumination intensity is low or sufficient heat cannot be provided in cloudy days, the first heat storage device releases partial heat to supplement the shortage of the required heat;
(2) after entering the first reactor 5, the purified pyrolysis gas is subjected to chemical reaction with an oxygen carrier (ferroferric oxide), the reduced oxygen carrier enters the second reactor 10 and is subjected to oxidation reaction with air conveyed by an air blower 9, the oxidized oxygen carrier enters the first reactor 5 again and is subjected to chemical reaction with the purified pyrolysis gas in the first reactor 5, and the steps are repeated;
the second heat storage device 13 and the third heat storage device 14 are respectively used for supplementing the shortage of heat required by the chemical reaction of the first reactor 5 and the second reactor 10; after flowing through a first turbine 15, the high-temperature and high-pressure mixture (carbon dioxide and water vapor) discharged from the first reactor 5 enters a first heat exchanger 19 as a heat source, and the first turbine 15 drives a first generator 16 to generate electricity; after passing through a second turbine 17, the high-temperature and high-pressure air discharged from the second reactor enters a second heat exchanger 20 as a heat source, and the second turbine 17 drives a second generator 18 to generate electricity;
(3) two streams of cold seawater are subjected to heat exchange and temperature rise through a first heat exchanger 19 and a second heat exchanger 20, then are converged and then are divided, one stream of the cold seawater enters a third heat exchanger 21, multi-effect evaporation is carried out in the third heat exchanger 21 to generate fresh water, one part of the other stream of the cold seawater is supplied to the outside through a first valve 26, the other part of the cold seawater enters a heat storage tank 29 through a second valve 27, a fourth heat storage device 30 stores part of heat of hot fluid in the heat storage tank 29, and when the external heat load demand is increased and the original heat supply quantity cannot meet the demand easily, the heat stored in the heat storage tank 29 is utilized to supplement by adjusting a third valve 28 so as to meet the peak heat load demand;
(4) the mixture of carbon dioxide and water from the heat source outlet of the first heat exchanger 19 is separated into liquid water by the gas-liquid separator 22, and the second wind driven generator 8 is used for providing electric energy for the electric motor 24 to drive the compressor 23 to compress the rest carbon dioxide into the gas storage tank 25 for storage.
In conclusion, the solid waste pyrolysis, chemical looping combustion and advanced heat storage are integrated, reaction heat energy is supplemented to the pyrolysis device and the chemical looping combustion reactor by focusing sunlight, and electric energy converted from wind energy is used as a power source of rotary equipment such as a compression device and a blast device, so that carbon dioxide in combustion products is easier to separate and store, abundant renewable resources such as solar energy and wind energy in island regions are effectively utilized, and the consumption of traditional fossil energy is reduced; the invention can also provide various resources such as power output, thermal output, fresh water and the like for the outside, realizes the reduction, harmlessness and reclamation of the island domestic garbage on site, and solves the problem of shortage of power, thermal and fresh water resources in island areas; according to the invention, through the arrangement of the gas barrier structure, the oxygen carrier is enabled to reciprocate to the first reactor and the second reactor, so that gas substances in the first reactor and the second reactor are effectively prevented from being mixed with each other; according to the invention, different types of heat storage materials are arranged in each heat storage device, and according to the heat requirement of each reactor, the corresponding heat storage materials can exert the heat storage and release characteristics, supplement the deficiency of the required heat and maintain the stable and efficient operation of the device system.
The above description is only for the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure of the present invention.
Claims (10)
1. A multi-combined-supply device system for wind-solar driven solid waste treatment is characterized by comprising a solid waste pyrolysis unit, a chemical-looping combustion and power generation unit, a seawater desalination and heat supply unit and a gas storage unit;
the solid waste pyrolysis unit comprises a pyrolysis device, a first heat storage device and a purification device; the first heat storage device is used for storing solar heat energy and supplementing the shortage of required heat for the pyrolysis device; the purification device is connected with a crude pyrolysis gas outlet of the pyrolysis device, and a filter layer is arranged in the purification device and used for converting the crude pyrolysis gas into tar and clean pyrolysis gas;
the chemical looping combustion and power generation unit comprises a chemical looping combustion device and at least 1 group of power generation devices; the chemical looping combustion device comprises a first reactor and a second reactor, and the first reactor is connected with a clean pyrolysis gas outlet of the purification device; the first reactor comprises a second heat storage device, and the second heat storage device is used for storing sunlight heat energy and supplementing the first reactor with insufficient heat required by reaction; the second reactor comprises a third heat storage device, and the third heat storage device is used for storing solar heat energy and supplementing the shortage of heat required by the reaction for the second reactor; the air required by the second reactor is driven by renewable energy sources;
the gas produced by the first reactor and/or the second reactor provides energy for the at least 1 group of power generation devices;
the seawater desalination and heat supply unit comprises a first heat exchanger, a second heat exchanger, a third heat exchanger, a heat reservoir and a fourth heat storage device; the mixed gas discharged by the first reactor is used as a heat source of the first heat exchanger, and the mixed gas discharged by the second reactor is used as a heat source of the second heat exchanger; after the cold sources of the first heat exchanger and the second heat exchanger are subjected to heat exchange and temperature rise, one part of the cold sources enters the third heat exchanger, the other part of the cold sources supplies heat to the outside, and the other part of the cold sources enters the heat reservoir provided with a fourth heat storage device;
the gas storage unit comprises a gas-liquid separator, a gas compression device and a gas storage device; the gas-liquid separator is connected with a heat source outlet of the first heat exchanger; the gas compression device compresses the gas obtained by the gas-liquid separator to the gas storage device; the gas compression device is driven by a renewable energy source.
2. A multi-split supply device system as claimed in claim 1, wherein the first heat storage device is provided at a throat portion of a pyrolysis device;
preferably, a first heat storage material is arranged in the first heat storage device;
preferably, the first heat storage material comprises a carbonate-based heat storage material.
3. The multi-split supply device system as claimed in claim 2, wherein the solid waste pyrolysis unit comprises a first light condensing device, and the first light condensing device is used for reflecting and focusing sunlight to the first heat storage device.
4. A multi-supply device system as claimed in any one of claims 1 to 3, wherein the first reactor and the second reactor are connected through an oxygen carrier channel;
preferably, the oxygen carrier channel is provided with a gas barrier structure.
5. A multi-split power supply device system as claimed in any one of claims 1 to 4, wherein the second heat storage device is provided with a second heat storage material, the third heat storage device is provided with a third heat storage material, and the second heat storage material and the third heat storage material respectively and independently comprise silicon carbide.
6. The multi-split device system as claimed in claim 5, wherein the chemical looping combustion device comprises a second light condensing device for reflecting and focusing sunlight to the second heat storage device.
7. The multi-split device system as claimed in claim 6, wherein the chemical looping combustion device comprises a third light condensing device for reflecting and focusing sunlight to a third heat storage device.
8. A multi-split device system as claimed in any one of claims 1 to 7, wherein the renewable energy drive comprises a wind energy drive and/or a solar energy drive;
preferably, the power generation device comprises a first turbine, a first power generator connected with the first turbine, a second turbine and a second power generator connected with the second turbine; gas generated by the first reactor flows through a first turbine and then enters a first heat exchanger as a heat source, and the first turbine drives a first generator to generate electricity; and the gas generated by the second reactor flows through a second turbine and then enters a second heat exchanger as a heat source, and the second turbine drives a second generator to generate electricity.
9. A multiple supply device system as claimed in any one of claims 1 to 8, wherein the third heat exchanger comprises a multiple effect evaporator.
10. A multi-split supply device system as claimed in any one of claims 1 to 9, wherein a fourth heat storage material is provided in the fourth heat storage device;
preferably, the fourth heat storage material comprises a nitrate-based heat storage material.
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