CN105674582B - A kind of biomass and three co-generation systems of solar energy coupling - Google Patents
A kind of biomass and three co-generation systems of solar energy coupling Download PDFInfo
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- CN105674582B CN105674582B CN201610227627.XA CN201610227627A CN105674582B CN 105674582 B CN105674582 B CN 105674582B CN 201610227627 A CN201610227627 A CN 201610227627A CN 105674582 B CN105674582 B CN 105674582B
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
- Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
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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
- Y02E10/44—Heat exchange systems
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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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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Abstract
The invention discloses three co-generation systems that a kind of biomass and solar energy couple, the system includes biomass preheater, biomass pulverizer, fixed-bed gasification furnace, separation cyclone scrubber, First Heat Exchanger, the second heat exchanger, the 3rd heat exchanger, condenser, water pump, trough type solar heat-collector, tower heliostat field, gas turbine, flue gas vapors type absorption installation and the 4th heat exchanger.The present invention is integrated with two kinds of energy technologys of gasification of biomass and solar energy heating, and the mutual supplement with each other's advantages of two kinds of energy is realized by the system integration.The system overall energetic efficiency is up to 50.2%, and to renewable energy system structure optimization, environment sustainable development, reply climate change has particularly significant effect.
Description
Technical field
The present invention relates to energy technology field, three co-generation systems of particularly a kind of biomass and solar energy coupling.
Background technology
For a long time, energy problem always is the basic problem of human survival and development.With coal, oil, naturally
The consumption of the fossil energies such as gas, discharge substantial amounts of pollutant and threaten ecological environment.Meanwhile the dioxy that fossil energy burning discharges
Change carbon amounts far beyond the photosynthetic absorbability of green plants so that people come the eco-environmental pressure that faces increasingly
Greatly.Reserves of exploiting natural resources are big, the regenerative resource of cleanliness without any pollution is for sustainable development important in inhibiting.Wherein solar energy
Be considered as the potential alternative energy source of fossil fuel because of its unique advantage with biomass, its high-efficiency cleaning using technology by
Extensive concern.
Solar energy with its reserves unlimitedness, generality be present, using unique advantages such as spatter properties, make the solution energy
One of short, environmental pollution effective way.Solar radiant energy is converted into by heat energy by solar energy optical-thermal transformation technology, with water
As direct heat transfer working medium, there is provided the latent heat of vaporization required for gasification reaction, be converted into internal steam work, pass through the shape of internal steam work
The gasification reaction that formula is participated in and biomass is carried out at relatively high temperatures, indirect reformer is syngas chemistry energy, realizes that grade is indirect
Lifting.
Biomass compared with other energy there is widely distributed, environment to influence smaller, the advantage such as sustainable use.But
There is also the shortcoming such as resource distribution is scattered, energy density is low, and direct biomass burning amount utilization ratio is low, and release exhaust gas dust is made
Into environmental pollution.The biomass of low energy densities is converted into synthesis gas easy to use by biomass gasification technology so that fuel
Chemical energy be transferred in synthesis gas, improve combustion gas utilization ratio.
Cooling-heating treatment system is the distributed energy resource system for integrating generating, heating, freezing, and passes through fuel combustion
High-grade heat energy be used for generate electricity, low grade heat energy is used for heat supply, refrigeration or dehumidifying, realizes the step of CCHP and the energy
Utilize.Biomass and three co-generation systems of solar energy coupling consider solar energy economy heat-collecting temperature and biomass gasification reaction temperature
The characteristics of spending, Yi Jigong, hot and cold and confession realize the synthesis cascade utilization of the energy, improve the performance of system.Distributed biogas
Change energy supplying system and collect solid bio-fuel nearby, avoid energy resource consumption and the expense of low-density raw material long distance delivery, play
The advantages of product diversity, meet the needs of terminal user is to the various energy resources such as gas, hot and cold, electric, while the low temperature sun in utilization
Energy heat-collecting capacity provides the gasification latent heat required for gasification reaction, and indirect reformer is syngas chemistry energy, realizes that the grade of energy carries
Rise.
Subject matter existing for the research to existing design theory and the biomass co-generation system of embodiment exists at present：1)
Biomass co-generation system input energy sources is single, regenerative resource application lack of diversity.2) biomass co-generation system is defeated
Go out product mainly based on cogenerated products, cool and thermal power can not meet terminal user's energy diversification demand using less.3) pass through
Biomass Gasification ＆ Power Generation realizes the lifting to fuel chemical energy grade, and how efficiently to utilize biomass synthesis gas and generated electricity
Residual heat resources in journey, the synthesis cascade utilization for realizing heat energy are also the key issue for needing to solve.
The content of the invention
(1) technical problems to be solved
In order to improve co-generation system overall energetic efficiency to greatest extent, the complementary profit of real meaning renewable energy comprehensive is realized
With meeting the product demand of different user, improve residual heat resources synthesis cascade utilization, the present invention proposes a kind of biomass and too
Three co-generation systems that sun can couple.
(2) technical scheme
In order to achieve the above object, the invention provides three co-generation systems that a kind of biomass and solar energy couple, this is
System includes biomass preheater, biomass pulverizer, fixed-bed gasification furnace, separation cyclone scrubber, First Heat Exchanger, second changed
Hot device, the 3rd heat exchanger, condenser, water pump, trough type solar heat-collector, tower heliostat field, gas turbine, flue gas vapors type
Absorption installation and the 4th heat exchanger.
Wherein：Biomass preheater, for dried biomass, reduce the water content of biomass；Biomass pulverizer, is used for
Biomass material is broken into granular material；Fixed-bed gasification furnace, gasification reaction is participated in for biomass and vapor, generation is closed
Into gas, meet gas turbine fuel demand；Separation cyclone scrubber, for being removed to the synthesis gas of fixed bed gasification outlet of still
Dirt purified treatment, remove ash content and the impurity such as charcoal particle in synthesis gas；First Heat Exchanger, it is pre- using the high temperature heat of synthesis gas
Hot-air, meet dried biomass demand；Second heat exchanger, 0.6MPa vapor is produced using the high temperature heat of synthesis gas, it is full
The hot water demand of sufficient flue gas vapors type absorption installation；3rd heat exchanger, input slot is preheated using the middle low temperature heat energy of synthesis gas
The water of formula solar thermal collector, improve water temperature；Condenser, for removing the moisture condensed in synthesis gas；Water pump, for pair
0.1MPa, 25 DEG C of water carry out pressurized treatments, are passed into the 3rd heat exchanger；Trough type solar heat-collector, heat absorption work is used as using water
Matter, water is heated using solar thermal energy, to produce vapor, meets the needs of gasification reaction in fixed-bed gasification furnace；The tower settled date
Jing Chang, high temperature heat source needed for steam gasification is provided for focused solar energy；Gas turbine, utilize the synthesis Jing Guo purified treatment
Gas acting generates electricity, and meets user and maintains the electric demand of unit normal operation；Flue gas vapors type absorption installation, using lithium bromide
Solution, it is that waste heat produces chilled water to produce hot water for the flue gas using gas turbine and the second heat exchanger, to meet user's system
Cold demand；3rd heat exchanger, for the waste heat using lithium bromide absorption-type machine unit outlet, inlet side domestic hot-water is heated, is met
User's domestic hot-water's demand.
(3) beneficial effect
It can be seen from the above technical proposal that the invention has the advantages that：
1st, biomass provided by the invention and three co-generation systems of solar energy coupling, by rationally utilizing solar energy and biology
Two kinds of regenerative resources of mass-energy, respective advantage is played, improve biomass gasification process efficiency, while realize different renewable energies
The counterpart in source rationally utilizes so that system total energy source efficiency is up to 50.2%.
2nd, biomass provided by the invention and three co-generation systems of solar energy coupling, solar energy as it is a kind of it is clean can be again
The raw energy, it is temperature steam in heat-conducting medium generation using water by trough type solar heat-collector, solar energy optical-thermal switch technology is
Gasification reaction provides the gasification latent heat of a part of steam, biomass gasification reaction is participated in by vapor, by low temperature in solar energy
Heat energy indirect reformer is syngas chemistry energy, realizes that grade is lifted indirectly；
3rd, biomass provided by the invention and three co-generation systems of solar energy coupling, solar energy as it is a kind of it is clean can be again
The raw energy, high temperature heat is converted into by tower heliostat field focused solar energy, be in gasification of biomass reactor biomass and
Steam gasification reaction provides thermal source, and solar energy is stored in the form of syngas chemistry energy；
4th, biomass provided by the invention and three co-generation systems of solar energy coupling, by by the biomass of low energy densities
The electric energy of high-quality is converted to, while the residual heat resources of different grades are used to produce domestic hot-water, heat supply, refrigeration, realize not
With the synthesis cascade utilization of grade residual heat resources；
5th, biomass provided by the invention and three co-generation systems of solar energy coupling, make full use of synthesis gas in gasification
Residual heat resources, the high-temperature residual heat resource of synthesis gas is reclaimed, while the condensed water in synthesis gas of going out, not only further
Purified treatment synthesis gas, the residual heat resources in biomass gasification process are also caused to obtain fully rationally utilizing；
6th, biomass provided by the invention and three co-generation systems of solar energy coupling, region be directly facing user, solve biomass
Scattered, the problem of energy density is low, provides energy for power network end or remote and biomass resource abundant area, reduction conveys
During energy consumption, improve the gross efficiency of system.
Brief description of the drawings
Fig. 1 is the schematic diagram of three co-generation systems of biomass provided by the invention and solar energy coupling.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in more detail.
As shown in figure 1, be biomass provided by the invention and solar energy coupling three co-generation systems schematic diagram, the system
Including biomass preheater, biomass pulverizer, fixed-bed gasification furnace, separation cyclone scrubber, First Heat Exchanger, the second heat exchange
Device, air-water separator, water pump, trough type solar heat-collector, tower heliostat field, gas turbine, the absorption machine of flue gas vapors type
Group and the 3rd heat exchanger.
Biomass material (1) preheats in biomass preheater through 200 DEG C of air (9), removes in biomass material
Free moisture so that biomass material moisture is down to 10% or so.Biomass material (2) by drying process enters life
Material pulverizer is ground, and makes biomass material particle diameter in the range of 1-2mm.Biomass material (3) by drying process
Into fixed-bed gasification furnace, mixed with 350 DEG C of vapor (13) and gasification reaction (vapor pressure 0.1MPa, gasification temperature occurs
Spend for 950 DEG C), tower heliostat field absorbs solar energy (28) and provides heat energy needed for gasification reaction (29) for fixed-bed gasification furnace.
High-temperature synthesis gas (4) containing solid particulate matter, which initially enters separation cyclone scrubber and removes ash therein, grades solid particulate matter
(26) recuperation of heat, is carried out subsequently into First Heat Exchanger, preheated air (9) is to 200 DEG C (10), then is passed through the production of the second heat exchanger
0.6MPa vapor (19) is used to provide waste heat for flue gas vapors type absorption installation, subsequently enters the 3rd heat exchanger, preheats
The water of trough type solar heat-collector is passed through, improves water temperature；The condensed device of synthesis gas that final temperature is down to 25 DEG C isolates condensation
Water (27).200 DEG C of air (10) is preheated to by high-temperature synthesis gas in First Heat Exchanger and enters biomass preheater, be used for
Dried biomass.During solar energy heating, 25 DEG C, 0.1MPa water (11) pressurizeed through water pump, be passed through the 3rd heat exchanger and enter
Row preheating, is subsequently passed low-grade solar thermal energy in being absorbed in trough type solar heat-collector, produces 350 DEG C vapor (14) conduct
The gasifying agent of biomass gasification reaction.
Synthesis gas (8) by purified treatment is passed through gas turbine and generated electricity with air (15) mixed combustion, produces 500-600
DEG C or so flue gas (16) initially enter fume hot-water type absorption refrigeration unit, produce 7 DEG C of chilled waters (21)；Subsequently into
Four heat exchangers exchange heat, and produce 80 DEG C of domestic hot-water (23), and last 120 DEG C or so of flue gas (18) is emitted into air.
Biomass provided by the present invention and three co-generation system devices of solar energy coupling can use in a particular embodiment
Major parameter is as shown in table 1.Rice husk is chosen as research object, is calculated with 1350kg/h rice husk input quantities, vapor is defeated
It is 560kg/h to enter amount (vapor is 0.4 with biomass ratio).Hunan area solar energy irradiation index is chosen simultaneously as ginseng
Examine, or so number 1400-2200 hours, annual radiant all quality 4190-5016MJ/ ㎡, annual sunshine under standard illumination when year irradiates
Hour time 3.1-3.8.
Table 1
Table 2
Solar energy heating amount is 5263kW in the present invention, and the input ratio for accounting for system gross energy is 50.9%, system total energy
Source efficiency is 50.2%.By system performance analysis, two kinds of regenerative resources of integrated bio mass-energy of the present invention and solar energy, reduce
The harm that fossil energy combustion zone comes, while realize the comprehensive utilization of regenerative resource.
Claims (6)
1. a kind of biomass and three co-generation systems of solar energy coupling, it is characterised in that the system includes biomass preheater, life
Material pulverizer, fixed-bed gasification furnace, separation cyclone scrubber, First Heat Exchanger, the second heat exchanger, the 3rd heat exchanger, condensation
Device, water pump, trough type solar heat-collector, tower heliostat field, gas turbine, flue gas vapors type absorption installation and the 4th heat exchange
Device, wherein：
Biomass preheater, for dried biomass, reduce the water content of biomass；
Biomass pulverizer, the biomass material for biomass preheater to be exported are broken into granular material；
Fixed-bed gasification furnace, for the biomass of biomass pulverizer outlet and the water vapour ginseng of trough type solar heat-collector outlet
With gasification reaction, synthesis gas is generated, meets gas turbine fuel demand；
Separation cyclone scrubber, for carrying out dust separation processing to the synthesis gas of fixed bed gasification outlet of still, remove synthesis gas
In ash content and charcoal particle；
First Heat Exchanger, using the high temperature heat preheated air of the synthesis gas of separation cyclone scrubber outlet, meet to dry biology
Matter demand；
Second heat exchanger, 0.6MPa steams are produced using the high temperature heat of the synthesis gas of First Heat Exchanger outlet, meet that flue gas steams
The hot water demand of vapour type absorption installation；
3rd heat exchanger, utilize the middle low temperature heat energy preheating input trough type solar heat-collector of the synthesis gas of the second heat exchanger exit
Water, improve water temperature；
Condenser, the moisture that condenses in the synthesis gas for removing the 3rd heat exchanger exit；
Water pump, for carrying out pressurized treatments to 0.1MPa, 25 DEG C of water, it is passed into the 3rd heat exchanger；
Trough type solar heat-collector, using water as heat absorption working medium, the water of the 3rd heat exchanger exit is heated using solar thermal energy, with life
Water vapour is produced, meets the needs of gasification reaction in fixed-bed gasification furnace；
Tower heliostat field, high temperature heat source needed for steam gasification is provided for focused solar energy；
Gas turbine, done work and generated electricity using the condensator outlet synthesis gas Jing Guo purified treatment, met user and maintain unit just
The electric demand often run；
Flue gas vapors type absorption installation, using lithium-bromide solution, for the flue gas using gas turbine and the production of the second heat exchanger
Raw steam is that waste heat produces chilled water, to meet user's refrigeration demand；
4th heat exchanger, for the waste heat using the outlet of flue gas vapors type absorption installation, inlet side domestic hot-water is heated, is met
User's domestic hot-water's demand.
2. biomass according to claim 1 and three co-generation systems of solar energy coupling, it is characterised in that the three coproduction system
System, as input fuel, belongs to regenerative resource complementation using biomass and solar energy.
3. biomass according to claim 1 and three co-generation systems of solar energy coupling, it is characterised in that described tower fixed
Solar eyepiece field absorbs solar energy and provides high temperature heat source needed for fixed-bed gasification furnace gasification.
4. biomass according to claim 1 and three co-generation systems of solar energy coupling, it is characterised in that the fixed bed
The biomass material that biomass pulverizer exports in gasification furnace participates in gas together with the water vapour that trough type solar heat-collector exports
Change reaction, generate synthesis gas.
5. biomass according to claim 1 and three co-generation systems of solar energy coupling, it is characterised in that described second changes
Hot device high temperature synthesis gas is used to produce 0.6MPa vapor, for providing flue gas vapors type absorption installation waste heat thermal source.
6. biomass according to claim 1 and three co-generation systems of solar energy coupling, it is characterised in that the biomass
Preheater utilizes preheated air, and biomass material is preheated, and reduces biomass water content, improves gasification reaction efficiency.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108981220A (en) * | 2018-05-28 | 2018-12-11 | 长沙理工大学 | A kind of cold, heat and power triple supply system of biomass, natural gas and earth source heat pump coupling |
| CN108716782A (en) * | 2018-05-28 | 2018-10-30 | 长沙理工大学 | A kind of co-generation unit of coupled biological matter and geothermal energy |
| CN110686417A (en) * | 2019-10-21 | 2020-01-14 | 铜陵市宏安太阳能科技有限公司 | Solar water heater with multiple complementary functions |
| CN114836480A (en) * | 2022-05-10 | 2022-08-02 | 集美大学 | Method and system for coupling natural gas combined cycle based on solar-driven methane reforming |
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Patent Citations (6)
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| JPS58156109A (en) * | 1982-03-12 | 1983-09-17 | Hitachi Zosen Corp | Collecting method for combustion heat of high molecular waste |
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