CN105674582A - Biomass and solar-energy coupled tri-generation system - Google Patents
Biomass and solar-energy coupled tri-generation system Download PDFInfo
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- CN105674582A CN105674582A CN201610227627.XA CN201610227627A CN105674582A CN 105674582 A CN105674582 A CN 105674582A CN 201610227627 A CN201610227627 A CN 201610227627A CN 105674582 A CN105674582 A CN 105674582A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
- F02C3/22—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products the fuel or oxidant being gaseous at standard temperature and pressure
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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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- 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
- F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/06—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S2020/10—Solar modules layout; Modular arrangements
- F24S2020/18—Solar modules layout; Modular arrangements having a particular shape, e.g. prismatic, pyramidal
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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
-
- 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
-
- 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
Abstract
The invention discloses a biomass and solar-energy coupled tri-generation system. The biomass and solar-energy coupled tri-generation system comprises a biomass preheater, a biomass smashing machine, a fixed-bed gasifying furnace, a cyclone separation dust remover, a first heat exchanger, a second heat exchanger, a third heat exchanger, a condenser, a water pump, a groove-type solar heat collector, a tower-type heliostat field, a combustion gas turbine, a smoke-steam-type absorbing-type unit and a fourth heat exchanger. According to the biomass and solar-energy coupled tri-generation system, the biomass-gasification energy technology and the solar-heat-collection energy technology are integrated, and complementation of the advantages of the two energy sources is achieved through system integration. The total energy efficiency of the system is up to 50.2%, and the biomass and solar-energy coupled tri-generation system has the quite important effects on structure optimization of a renewable energy system, sustainable development of the environment and climate change tackling.
Description
Technical field
The present invention relates to energy technology field, particularly three co-generation systems of 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. Along with coal, oil, the consumption of the fossil energies such as natural gas, discharge substantial amounts of pollutant and threaten ecological environment. Meanwhile, the amount of carbon dioxide that fossil energy burning discharges is far beyond the photosynthetic absorbability of green plants so that the eco-environmental pressure that people faces is increasing. 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 and biomass are considered as the potential alternative energy source of Fossil fuel because of the advantage of its uniqueness, and its high-efficiency cleaning utilizes technology to receive significant attention.
Solar energy with its reserves unlimitedness, there is universality, utilize the unique advantages such as spatter property, make one of effective way of solving energy shortage, environmental pollution. Solar radiant energy is converted to heat energy by solar energy optical-thermal transformation technology, using water as direct heat transfer working medium, the latent heat of vaporization required for gasification reaction is provided, it is converted into internal steam work, the gasification reaction carried out at relatively high temperatures with biomass is participated in by the form of internal steam work, indirect reformer is syngas chemistry energy, it is achieved grade promotes indirectly.
Biomass, compared with other energy, have the advantages such as widely distributed, environmental effect is less, sustainable use. But there is also the shortcomings such as resource distribution dispersion, energy density are low, direct biomass burning amount utilization ratio is low, and release exhaust gas dust causes environmental pollution. The biomass of low energy densities are converted into synthesis gas easy to use by biomass gasification technology so that the chemical energy of fuel is transferred in synthesis gas, improve combustion gas utilization ratio.
Cooling-heating treatment system is the distributed energy resource system integrating generating, heating, freeze, and is used for generating electricity by the high-grade heat energy of fuel combustion, and low grade heat energy is used for heat supply, refrigeration or dehumidifying, it is achieved the cascade utilization of CCHP and the energy. Three co-generation systems of biomass and solar energy coupling consider the feature of solar energy economy heat-collecting temperatures and biomass gasification reaction temperature, Yi Jigong, hot and cold and for the comprehensive cascade utilization realizing the energy, improve the performance of system. Distributed gasification of biomass energy supplying system collects solid bio-fuel nearby, avoid energy resource consumption and the expense of low-density raw material long distance delivery, the advantage playing product diversity, meet terminal use's demand to gas, the various energy resources such as hot and cold, electric, in utilizing, low-temperature solar energy heat-collecting capacity provides the gasification latent heat required for gasification reaction simultaneously, indirect reformer is syngas chemistry energy, it is achieved the grade of energy promotes.
The subject matter at present research of the biomass co-generation system of existing design concept and embodiment existed exists: 1) biomass co-generation system input energy sources is single, regenerative resource application lack of diversity.2) biomass co-generation system output products is mainly based on cogenerated products, and cool and thermal power application is less, it is impossible to meet terminal use's energy multiple demand. 3) achieve the lifting to fuel chemical energy grade by Biomass Gasification & Power Generation, and how efficiently to utilize the residual heat resources in biomass synthesis gas and power generation process, it is achieved the comprehensive cascade utilization of heat energy is also the key issue needing to solve.
Summary of the invention
(1) to solve the technical problem that
In order to improve co-generation system overall energetic efficiency to greatest extent, realize real meaning renewable energy comprehensive complementation to utilize, meeting the product demand of different user, improve the comprehensive cascade utilization of residual heat resources, the present invention proposes a kind of biomass and three co-generation systems of solar energy coupling.
(2) technical scheme
In order to achieve the above object, the invention provides a kind of biomass and three co-generation systems of solar energy coupling, this 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.
Wherein: biomass preheater, for dried biomass, the water content of biomass is reduced; Biomass pulverizer, for being broken into granular material by biomass material; Fixed-bed gasification furnace, participates in gasification reaction for biomass and steam, generates synthesis gas, meet gas turbine fuel demand; Separation cyclone scrubber, for the synthesis gas of fixed bed gasification outlet of still is carried out udst separation process, removes the impurity such as the ash in combustion gas and charcoal granule; First Heat Exchanger, utilizes the high temperature heat preheated air of synthesis gas, to produce heat, meets dried biomass demand; Second heat exchanger, utilizes the high temperature heat of synthesis gas to produce 0.6MPa steam, meets the hot water demand of flue gas vapors type absorption installation; 3rd heat exchanger, utilizes the water of the middle low temperature heat energy preheating input trough type solar heat-collector of synthesis gas, improves water temperature; Condenser, for removing the moisture condensed in synthesis gas; Water pump, for 0.1MPa, 25 DEG C of water are carried out pressurized treatments, is passed in the 3rd heat exchanger; Trough type solar heat-collector, using water as heat absorption working medium, utilizes solar thermal energy to add hot water, to produce steam, meets the demand of gasification reaction in fixed-bed gasification furnace; Tower heliostat field, for high temperature heat source needed for focused solar energy offer steam gasification; Gas turbine, utilizes the synthesis gas through purified treatment to do work and generates electricity, meet user and maintain the electric demand that unit is properly functioning; Flue gas vapors type absorption installation, adopts lithium-bromide solution, and flue gas and the second heat exchanger for utilizing gas turbine produce hot water and produce chilled water for waste heat, to meet user's refrigeration demand; 3rd heat exchanger, for the waste heat utilizing lithium bromide absorption-type machine unit to export, heats inlet side domestic hot-water, meets user's domestic hot-water's demand.
(3) beneficial effect
From technique scheme it can be seen that the method have the advantages that
1, three co-generation systems of biomass provided by the invention and solar energy coupling, by Appropriate application solar energy and two kinds of regenerative resources of biomass energy, play respective advantage, improve biomass gasification process efficiency, realize the boil on the nape opposite the mouth Appropriate application of different regenerative resource so that system total energy efficiency reaches 50.2% simultaneously.
2, three co-generation systems of biomass provided by the invention and solar energy coupling, solar energy is as the regenerative resource of a kind of cleaning, pass through trough type solar heat-collector, temperature steam in generating with water for heat-conducting medium, solar energy optical-thermal switch technology provides the gasification latent heat of a part of steam for gasification reaction, participate in biomass gasification reaction by steam, be syngas chemistry energy by low temperature heat energy indirect reformer in solar energy, it is achieved grade promotes indirectly;
3, three co-generation systems of biomass provided by the invention and solar energy coupling, solar energy is as the regenerative resource of a kind of cleaning, it is converted into high temperature heat by tower heliostat field focused solar energy, react for biomass in gasification of biomass reactor and steam gasification and thermal source is provided, solar energy is stored with syngas chemistry energy form;
4, three co-generation systems of biomass provided by the invention and solar energy coupling, by the biomass of low energy densities being converted to the electric energy of high-quality, the residual heat resources of different grades are used for producing domestic hot-water, heat supply, refrigeration simultaneously, it is achieved that the comprehensive cascade utilization of different grade residual heat resources;
5, three co-generation systems of biomass provided by the invention and solar energy coupling, make full use of the residual heat resources of synthesis gas in gasification, the high-temperature residual heat resource of synthesis gas is reclaimed, go out the condensed water in synthesis gas simultaneously, not only further purified treatment synthesis gas, also makes the residual heat resources in biomass gasification process obtain abundant Appropriate application;
6, three co-generation systems of biomass provided by the invention and solar energy coupling, region be directly facing user, solve the problem that biomass are disperseed, energy density is low, provide energy for electrical network end or remote and that biomass resource is abundant area, reduce the energy consumption in course of conveying, improve the aggregate efficiency of system.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of three co-generation systems of biomass provided by the invention and solar energy coupling.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
As shown in Figure 1, being the schematic diagram of three co-generation systems of biomass provided by the invention and solar energy coupling, this system includes biomass preheater, biomass pulverizer, fixed-bed gasification furnace, separation cyclone scrubber, First Heat Exchanger, the second heat exchanger, air-water separator, water pump, trough type solar heat-collector, tower heliostat field, gas turbine, flue gas vapors type absorption installation and the 3rd heat exchanger.
Biomass material (1) preheats through the air (9) of 200 DEG C in biomass preheater, removes the free moisture in biomass material so that biomass material moisture is down to about 10%. Biomass material (2) through dried enters biomass pulverizer and is ground, and makes biomass material particle diameter within the scope of 1-2mm. Biomass material (3) through dried enters fixed-bed gasification furnace, steam (13) with 350 DEG C mixes generating gasification and reacts that (vapor pressure is 0.1MPa, gasification temperature is 950 DEG C), tower heliostat field absorbs solar energy (28) for heat energy (29) needed for fixed-bed gasification furnace offer gasification reaction. High-temperature synthesis gas (4) containing solid particulate matter initially enters separation cyclone scrubber and removes ash therein and grade solid particulate matter (26), recuperation of heat is carried out subsequently into First Heat Exchanger, preheated air (9) is to 200 DEG C (10), pass into the second heat exchanger again and produce the steam (19) of 0.6MPa for providing waste heat for flue gas vapors type absorption installation, subsequently enter the 3rd heat exchanger, preheating passes into the water of trough type solar heat-collector, improves water temperature;Final temperature is down to the condensed device of synthesis gas of 25 DEG C and is isolated condensed water (27). First Heat Exchanger is preheated to air (10) the entrance biomass preheater of 200 DEG C through high-temperature synthesis gas, for dried biomass. In solar energy heating process, 25 DEG C, the water (11) of 0.1MPa pressurizes through water pump, pass into the 3rd heat exchanger to preheat, low-grade solar thermal energy in being subsequently passed in trough type solar heat-collector to absorb, produces the steam (14) of the 350 DEG C gasifying agent as biomass gasification reaction.
Synthesis gas (8) through purified treatment passes into gas turbine and air (15) mixed combustion generating, the flue gas (16) producing about 500-600 DEG C initially enters fume hot-water type absorption refrigeration unit, produces 7 DEG C of chilled waters (21); Subsequently into the 4th heat exchanger heat exchange, producing the domestic hot-water (23) of 80 DEG C, the flue gas (18) of last about 120 DEG C discharges to air.
Three co-generation system devices of biomass provided by the present invention and solar energy coupling can adopt major parameter as shown in table 1 in a particular embodiment. Choosing rice husk as object of study, be calculated with 1350kg/h rice husk input quantity, steam input quantity is 560kg/h (steam and biomass ratio are 0.4). Choose Hunan area solar energy irradiation index as reference simultaneously, number 1400-2200 hours during year irradiation, annual radiant all quality 4190-5016MJ/, standard light photograph average sunshine time next year 3.1-3.8 hour.
Table 1
Table 2
In the present invention, solar energy heating amount is 5263kW, and the input ratio accounting for system gross energy is 50.9%, and system total energy efficiency is 50.2%. Through system performance analysis, integrated bio mass-energy of the present invention and two kinds of regenerative resources of solar energy, reduce fossil energy and burn the harm brought, be simultaneously achieved the comprehensive utilization of regenerative resource.
Claims (6)
1. three co-generation systems of biomass and solar energy coupling, it is characterized in that, this 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, wherein:
Biomass preheater, for dried biomass, reduces the water content of biomass;
Biomass pulverizer, for being broken into granular material by biomass material;
Fixed-bed gasification furnace, participates in gasification reaction for biomass and steam, generates synthesis gas, meet gas turbine fuel demand;
Separation cyclone scrubber, for the synthesis gas of fixed bed gasification outlet of still is carried out udst separation process, removes the ash in combustion gas and charcoal granule;
First Heat Exchanger, utilizes the high temperature heat preheated air of synthesis gas, to produce heat, meets dried biomass demand;
Second heat exchanger, utilizes the high temperature heat of synthesis gas to produce 0.6MPa steam, meets the hot water demand of flue gas vapors type absorption installation;
3rd heat exchanger, utilizes the water of the middle low temperature heat energy preheating input trough type solar heat-collector of synthesis gas, improves water temperature;
Condenser, for removing the moisture condensed in synthesis gas;
Water pump, for 0.1MPa, 25 DEG C of water are carried out pressurized treatments, is passed in the 3rd heat exchanger;
Trough type solar heat-collector, using water as heat absorption working medium, utilizes solar thermal energy to add hot water, to produce steam, meets the demand of gasification reaction in fixed-bed gasification furnace;
Tower heliostat field, for high temperature heat source needed for focused solar energy offer steam gasification;
Gas turbine, utilizes the synthesis gas through purified treatment to do work and generates electricity, meet user and maintain the electric demand that unit is properly functioning;
Flue gas vapors type absorption installation, adopts lithium-bromide solution, and flue gas and the second heat exchanger for utilizing gas turbine produce steam and produce chilled water for waste heat, to meet user's refrigeration demand;
4th heat exchanger, for the waste heat utilizing lithium bromide absorption-type machine unit to export, heats inlet side domestic hot-water, meets user's domestic hot-water's demand.
2. three co-generation systems of biomass according to claim 1 and solar energy coupling, it is characterised in that this three co-generation system adopts biomass and solar energy as input fuel, belongs to regenerative resource complementation.
3. three co-generation systems of biomass according to claim 1 and solar energy coupling, it is characterised in that described tower heliostat field absorbs solar energy provides fixed-bed gasification furnace gasification required high temperature heat source.
4. three co-generation systems of biomass according to claim 1 and solar energy coupling, it is characterised in that participate in gasification reaction together with the steam that in described fixed-bed gasification furnace, dried biomass material exports with trough type solar heat-collector, generate synthesis gas.
5. three co-generation systems of biomass according to claim 1 and solar energy coupling, it is characterised in that in described second heat exchanger, high-temperature synthesis gas is used for producing 0.6MPa steam, is used for providing flue gas vapors type absorption installation waste heat thermal source.
6. three co-generation systems of biomass according to claim 1 and solar energy coupling, it is characterised in that described biomass preheater utilizes preheated air, and biomass material is preheated, and reduces biomass water content, improves gasification reaction efficiency.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| 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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| 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 |
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| 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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| CN105674582B (en) | 2017-11-17 |
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