CN103803491B - The power generation system of middle low-temperature solar energy and the complementation of fossil oil thermochemistry and method - Google Patents
The power generation system of middle low-temperature solar energy and the complementation of fossil oil thermochemistry and method Download PDFInfo
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- CN103803491B CN103803491B CN201210455151.7A CN201210455151A CN103803491B CN 103803491 B CN103803491 B CN 103803491B CN 201210455151 A CN201210455151 A CN 201210455151A CN 103803491 B CN103803491 B CN 103803491B
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
The invention discloses power generation system and the method for a kind of middle low-temperature solar energy and the complementation of fossil oil thermochemistry, system comprises: feedstock supply unit, for storing fossil oil; Raw material blending device, for mixing raw material and unreacted reactant; Dispenser, enters the amount of preheater for controlling raw material in the unit time; Preheater, for carrying out preheating to raw material; Solar absorption reactor, utilizes the solar heat absorbed to drive fossil oil to carry out decomposing or reforming reaction, is the fuel chemical energy of rich hydrogen, produces sun power fuel by solar energy converting; Solar energy collector, becomes low temperature heat energy in high fluence density by the solar energy collecting of low energy-flux density, provides heat to decomposition or reforming reaction; Condenser, for cooling reaction product; Gas-liquid separator, for carrying out gas-liquid separation to mixture; Fuel diversion device, regulates the ratio of the sun power fuel being used for accumulation of energy or generating; Gas-holder, stores sun power fuel; Power generating equipment, burning sun power fuel externally exports electric work.The efficient power generation that present invention achieves sun power utilizes.
Description
Technical field
The present invention relates to technical field of solar, particularly relate to power generation system and the method for a kind of middle low-temperature solar energy and the complementation of fossil oil thermochemistry, particularly a kind of utilize low light gathering than solar-energy light collector by middle-low grade solar energy converting for higher-grade sun power fuel and realize generating system and method.
Background technology
Along with the progress of human society, owing to advancing in living standard and promoting the needs of social development, the mankind increase day by day for the demand of the energy, and traditional fossil energy total amount is limited, non-renewable, the use procedure of fossil energy simultaneously produces and greenhouse gas emission along with serious pollutent.Day by day exhausted fossil energy and the ever-increasing energy demand of the mankind, and sharp-pointed contradiction is defined to an urgent demand of environment protection, have a strong impact on the Sustainable development of the mankind.The renewable energy source that development and utilization sun power etc. clean alleviates energy supply and demand contradiction, and conservation of nature environment, realizes the important channel of Sustainable development.
Sun power has the feature of reserves unlimitedness, spatter property, development and utilization sun power for meet the growing energy demand of the mankind, reduce greenhouse gas emission significant.Because sun power itself has the features such as energy density is low, unstable, discontinuous, independent solar energy thermal-power-generating utilizes the generating efficiency of technology to be only 10%-17%, and there is accumulation of energy high in cost of production problem.
Solar heat chemical technology is the one of solar energy utilization technique, it is by endothermic chemical reaction process, assembled sun power is converted into the chemical energy of fuel, the fuel after conversion can realize storing and efficient power generation, thus realizes the efficiency utilization with sun power that stores of solar thermal energy.
In the world the thermochemical research of sun power is concentrated on to the high-temperature hot chemical technology of temperature of reaction more than 600 DEG C at present, mainly comprise the direction such as solar energy high temperature hydrogen production by water decomposition, the hydrogen manufacturing of Driven by Solar Energy fossil energy.But high-temperature hot chemical process needs expensive solar-energy light collector, assemble high-grade sun power, to provide reaction required heat energy, simultaneously high temperature solar thermochemical process exists that collecting efficiency is low, solar tracking is difficult, require high difficult point and bottleneck to reactor material, is difficult to realize large-scale promotion application.
Summary of the invention
(1) technical problem that will solve
In view of this, the object of the invention is the power generation system and the method that propose a kind of middle low-temperature solar energy and the complementation of fossil oil thermochemistry, significantly to improve the clean generating efficiency of sun power, reduce service temperature to realize reducing cost of electricity-generating, and break through by chemical accumulation of energy the technical bottleneck that solar heat power generation system exports instability.
(2) technical scheme
For achieving the above object, the invention provides the power generation system of a kind of middle low-temperature solar energy and the complementation of fossil oil thermochemistry, this system comprises:
Feedstock supply unit, for storing fossil oil, and exports to raw material blending device by the fossil oil of storage;
Raw material blending device, for receiving and mixing from the fossil oil in feedstock supply unit with from the unreacted reactant separated in gas-liquid separator, and exports to dispenser by the mixture obtained;
Dispenser, for controlling the amount of the incoming stock primary heater unit of raw material in the unit time, exports to raw material preheating device by the raw material being received from raw material blending device by certain speed according to solar energy resources and user side demand;
Raw material preheating device, utilizes the smoke discharging residual heat of power generating equipment to heat the raw material being received from dispenser, produces fossil oil steam and exports to solar absorption reactor;
Solar absorption reactor, utilizes the solar heat absorbed to drive the fossil oil steam being received from raw material preheating device to carry out decomposing or reforming reaction under catalyst action, is the fuel chemical energy of rich hydrogen, produces sun power fuel by solar energy converting;
Solar energy collector, for the solar energy collecting of low energy-flux density being become low temperature heat energy in high fluence density in line focus mode, for the fossil oil conversion solar fuel reaction in solar absorption reactor provides heat;
Condenser, for cooling the reaction product being received from solar absorption reactor, and exports to gas-liquid separator by cooled reaction product;
Gas-liquid separator, for carrying out gas-liquid separation to the mixture receiving condenser cooling, the gas-phase reaction product obtained after separation outputs to fuel diversion device, and the liquid-phase reaction product obtained exports to raw material blending device;
Fuel diversion device, according to solar energy resources and user with the sun power fuel flow that control flow check can be needed to power generating equipment and gas-holder, thus realizes the regulation and control of solar heat Chemical complementation power generation system;
Gas-holder, when solar energy resources is sufficient, stores excessive sun power fuel, realizes chemical accumulation of energy; When solar energy resources is not enough, the sun power fuel refreshment in gas-holder enters power generating equipment, and the system that realizes exports regulation and control;
Power generating equipment, using sun power fuel as fuel, drives generating set generate electricity and export electric work.
For achieving the above object, present invention also offers the electricity-generating method of a kind of middle low-temperature solar energy and the complementation of fossil oil thermochemistry, be applied to described system, the method comprises:
The unreacted reactant of the fossil oil that feedstock supply unit inputs by A, raw material blending device and gas-liquid separator input fully mixes, and exports to dispenser;
The raw material that raw material blending device inputs by B, dispenser exports to preheater by certain speed, and preheater carries out preheating to the raw material received, and then exports to solar absorption reactor;
C, solar absorption reactor utilize the solar heat absorbed to occur to decompose or reforming reaction in the reaction tubes of self for the raw material being received from preheater, and reaction product enters condenser;
Cooled reaction product from the reaction product of solar absorption reactor, and is exported to gas-liquid separator by the cooling of D, condenser;
E, gas-liquid separator carry out gas-liquid separation to the reaction product receiving condenser cooling, and the gas-phase reaction product obtained after separation exports to fuel diversion device, and the liquid-phase reaction product obtained exports to raw material blending device;
F, fuel diversion device control a certain amount of sun power flow in fuel to power generating equipment, make excessive sun power flow in fuel to gas-holder, or the sun power fuel in gas-holder are supplied flow to power generating equipment;
The burning of G, power generating equipment is from the sun power fuel of fuel diversion device, and export electric energy, the waste heat of discharge passes into preheating material in feed preheater.
(3) beneficial effect
As can be seen from technique scheme, the present invention has following beneficial effect:
1, in energy transformation and in utilizing, after after thermo-negative reaction, the raw material chemical energy of methyl alcohol, ethanol and dme etc. is converted to the chemical energy of sun power fuel, and the solar thermal energy simultaneously driving thermo-negative reaction to carry out also is converted into chemical energy and is stored in reaction product.System provided by the invention is the increase in the energy of reaction product in the effect of first law of thermodynamics aspect, and the part of increase equals the solar thermal energy of sun power converting fuel reactive absorption; Effect in second law of thermodynamics aspect is embodied in the lifting of solar thermal energy grade, by the thermo-negative reaction to sun power converting fuel such as methyl alcohol, ethanol and dme, makes low-grade solar thermal energy be promoted to high-grade fuel chemical energy.Higher-grade sun power fuel realizes efficient power generation by power set, thus significantly improves the clean generating efficiency of sun power.
2, the present invention is utilized, solar energy collector adopts parabolic trough type concentration structure, the i.e. sun power parabola groove beam condensing unit of uniaxiality tracking, structure is simple, parabola groove internal surface scribbles selective plating sunlight to high-reflectivity, low absorptivity, provides 150 DEG C to the heat of 300 DEG C of temperature ranges, compared with high-temp solar heat collector to the raw material reforming reaction in solar absorption reactor, manufacture and running cost lower, be conducive to large-scale promotion and application.
3, the present invention is utilized, solar absorption reactor by solar collector and reactor apparatus integrated, the integration apparatus be placed in the focal axis of solar-energy light collector is solar receiver, also be reactor, the direct irradiation of sunlight of the high fluence density of assembling is on solar absorption reactor, and be directly endothermic chemical reaction heat supply, system flow is simple, greatly reduce the expense adopting thermal medium to bring, it also avoid thermal medium simultaneously and store, transmit the thermosteresis produced.Not only be conducive to reducing heat lost by radiation by the integration of absorption/structure of reactor feature, and be conducive to the carrying out of decomposition or reforming reaction, realize the coupling of heat transfer and reaction, obtain good solar energy converting effect.
4, utilize the present invention, when solar energy resources is sufficient, when generation sun power fuel quantity is greater than dynamic power unit demand for fuel, excessive sun power fuel enters gas-holder, realizes chemical accumulation of energy; When solar energy resources is not enough, when the sun power fuel quantity produced can not meet the demand for fuel of dynamic power unit, the sun power fuel stored in gas-holder outputs to dynamic power unit, supply required fuel, thus the adjustment of the operation of electric power system of low-temperature solar energy and the complementation of fossil oil thermochemistry in realizing, breach the technical bottleneck that solar heat power generation system exports instability; Due to the discontinuity of solar energy resources, the power generation system of middle low-temperature solar energy and the complementation of fossil oil thermochemistry needs periodically start and stop, and when system starts, gas-holder exports sun power fuel feed power generating equipment and starts, produce smoke pre-heating raw material, avoid with extra energy start-up system.
5, the present invention has greater advantages to following user: the factory needing middle and small scale to power and user; Need geseous fuel and there is no user's (as surrounding city, the area that gas distributing system does not cover, the topographical conditions such as mountain area, island are unfavorable for the area of supplying gas) of combustion gas access conditions; Solar irradiation resource good (most area of China, especially west area).
Accompanying drawing explanation
Fig. 1 is the structural representation of the power generation system of middle low-temperature solar energy provided by the invention and the complementation of fossil oil thermochemistry;
Fig. 2 is the electricity-generating method schema of middle low-temperature solar energy provided by the invention and the complementation of fossil oil thermochemistry;
The schematic diagram of the power generation system that Fig. 3 is low-temperature solar energy in providing according to the embodiment of the present invention and the complementation of fossil oil thermochemistry;
In Fig. 1 and Fig. 3,1 is head tank, and 2 is raw material blending device, and 3 is dispenser, 4 is raw material preheating device, and 5 is solar energy collector, and 6 is solar absorption reactor, and 7 is condenser, 8 is gas-liquid separator, and 9 is fuel diversion device, and 10 is gas-holder, and 11 is power generating equipment.
Embodiment
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, Fig. 1 is the structural representation of the power generation system of middle low-temperature solar energy provided by the invention and the complementation of fossil oil thermochemistry, and this system comprises feedstock supply unit 1, raw material blending device 2, dispenser 3, raw material preheating device 4, solar absorption reactor 5, solar energy collector 6, condenser 7, gas-liquid separator 8, fuel diversion device 9, gas-holder 10, power generating equipment 11.
Wherein, the fossil oil of storage for storing fossil oil, and is exported to raw material blending device 2 by feedstock supply unit 1.Described feedstock supply unit is tanks, and the fossil oil wherein stored is methyl alcohol, ethanol, dme etc.
The mixture obtained for receiving and mixing the unreacted reactant from separating in the fossil oil in feedstock supply unit 1 and gas-liquid separator 8, and is exported to dispenser 3 by raw material blending device 2.Described raw material blending device is mixing tank, for being mixed with the unreacted reactant separated in gas-liquid separator by the fossil oil be received from head tank.
Dispenser 3 enters the amount of preheater 4 for controlling raw material in the unit time, according to solar energy resources and user side demand, the raw material being received from raw material blending device 2 is exported to raw material preheating device 4 by certain speed.Described dispenser is volume pump, in the interchanger of raw material preheating device, pump into raw material, according to solar energy resources and customer need regulation output material flow.
Raw material preheating device 4 utilizes the raw material of smoke discharging residual heat heating from dispenser 3 of power generating equipment 11, produces fossil oil steam and exports to solar absorption reactor 5.Raw material preheating device comprises an interchanger, and utilize smoke evacuation and the raw material heat exchange of power generating equipment, the fossil oil steam of generation passes into solar absorption reactor.
Solar absorption reactor 5 utilizes the solar heat absorbed to drive the fossil oil steam being received from raw material preheating device 4 to issue solution estranged or reforming reaction at catalyst action, converts solar energy into the fuel chemical energy of Fu Qing, produces sun power fuel.Described solar absorption reactor is chemical reactor, its structure is tubulose, material is the material such as steel, copper, aluminium that heat conductivility is good, the solid metal catalyst series such as copper system, nickel system or platinum palladium system are loaded in pipe, outer tube surface scribbles selective plating sunlight to high-absorbility, antiradar reflectivity emittance, outer tube is provided with the lens of high-transmission rate, is vacuum or antivacuum between lens and pipe.
Solar energy collector 6, for the solar energy collecting of low energy-flux density being become low temperature heat energy in high fluence density in line focus mode, provides heat to the fossil oil conversion solar fuel reaction in solar absorption reactor 5; This solar energy collector 6 adopts parabolic trough type concentration structure, solar absorption reactor 5 is positioned on the line focus line of solar energy collector, parabola groove internal surface is selective material sunlight to high-reflectivity, low absorptivity, provides the heat energy of 150 DEG C to 300 DEG C to the raw material conversion reaction in solar absorption reactor;
Cooled reaction product for cooling the reaction product from solar absorption reactor 5, and is exported to gas-liquid separator 8 by condenser 7.Described condenser is wall-type heat exchange equipment, adopts recirculated water to cool, is connected with recirculated cooling water.
Gas-liquid separator 8 is for carrying out gas-liquid separation to the mixture receiving condenser 7 cooling, and the gas-phase reaction product obtained after separation outputs to fuel diversion device 9, and the liquid-phase reaction product obtained exports to raw material blending device 2.The gas-phase reaction product obtained after described gas-liquid separator separates is the sun power such as hydrogen, carbon monoxide fuel and a small amount of byproduct, and liquid-phase reaction product is unreacted raw material, water etc.
Fuel diversion device 9 with control flow check can be needed to the sun power fuel flow of power generating equipment 11 with gas-holder 10, thus realizes the regulation and control of solar heat Chemical complementation power generation system according to solar energy resources and user.Described fuel diversion device is flow control valve, controls sun power flow in fuel to the flow of power generating equipment, makes excessive sun power fuel enter gas-holder and store; Sun power fuel refreshment when solar energy resources is not enough in regulation and control gas-holder enters power generating equipment, to meet the demand for fuel of power generating equipment.
Excessive sun power fuel, when solar energy resources is sufficient, stores, realizes chemical accumulation of energy by gas-holder 10, and when solar energy resources is not enough, the sun power fuel refreshment in gas-holder 10 enters power generating equipment 11, and the system that realizes exports regulation and control.Gas-holder is pressure vessel, for storing the sun power fuel from part flow arrangement, realizes accumulation of energy, and fuel needed for power generating equipment supplied by output sun power fuel when solar energy resources is not enough.
Power generating equipment 11, using sun power fuel as fuel, drives generating set generate electricity and export electric work.Described power generating equipment is oil engine or miniature combustion engine generating set, and burning sun power fuel power generation function also exports electric energy.
Based on the structural representation of the power generation system of low-temperature solar energy in described in Fig. 1 and the complementation of fossil oil thermochemistry, Fig. 2 shows the electricity-generating method schema of middle low-temperature solar energy provided by the invention and the complementation of fossil oil thermochemistry, and the method comprises the following steps:
Step 201: the unreacted reactant of the fossil oil that feedstock supply unit inputs by raw material blending device and gas-liquid separator input fully mixes, and exports to dispenser;
Step 202: the raw material that raw material blending device inputs by dispenser exports to preheater by certain speed, preheater carries out preheating to the raw material received, and then exports to solar absorption reactor;
Step 203: solar absorption reactor utilizes the solar heat absorbed to occur to decompose or reforming reaction in the reaction tubes of self for the raw material being received from preheater, and reaction product enters condenser;
Step 204: cooled reaction product from the reaction product of solar absorption reactor, and is exported to gas-liquid separator by condenser cooling;
Step 205: gas-liquid separator carries out gas-liquid separation to the reaction product receiving condenser cooling, and the gas-phase reaction product obtained after separation exports to fuel diversion device, and the liquid-phase reaction product obtained exports to raw material blending device;
Step 206: fuel diversion device controls a certain amount of sun power flow in fuel to power generating equipment, makes excessive sun power flow in fuel to gas-holder, or the sun power fuel in gas-holder is supplied flow to power generating equipment;
Step 207: power generating equipment burning is from the sun power fuel of fuel diversion device, and export electric energy, the flue gas of discharge passes into preheating material in feed preheater.
Feedstock supply unit described in step 201 is tanks, and the fossil oil wherein stored is methyl alcohol, ethanol etc., dme etc.; Raw material blending device described in steps A is mixing tank, for being mixed with the unreacted reactant separated in gas-liquid separator by the fossil oil be received from head tank.
Dispenser described in step 202 is volume pump, for pumping into raw material in the interchanger of raw material preheating device, according to solar energy resources and customer need regulation output material flow.
Step 203 comprises: the raw material that raw material preheating device exports to solar absorption reactor is becoming superheated vapo(u)r after raw material preheating device preheating and the evaporation of solar absorption reactor, at normal pressure, 150 to 300 DEG C of temperature of reaction and copper system, under nickel system or the solid metal catalyst series effect of platinum palladium system, the solar energy of collecting from solar energy collector is utilized to occur to decompose or reforming reaction, gas-phase reaction product is sun power fuel hydrogen, carbon monoxide and a small amount of byproduct, liquid-phase reaction product is unreacted fossil oil and water, this mixture enters condenser from solar absorption reactor.
In step 204, condenser is wall-type heat exchange equipment, adopts recirculated water to cool, is connected with recirculated cooling water.
The product of gas-phase reaction described in step 205 is the sun power such as hydrogen, carbon monoxide fuel and a small amount of byproduct, and liquid-phase reaction product is unreacted raw material, water etc.
Fuel diversion device described in step 206 is flow control valve, control the flow of sun power flow in fuel to power generating equipment, make excessive sun power fuel enter gas-holder to store, sun power fuel refreshment when solar energy resources is not enough in regulation and control gas-holder enters power generating equipment, to meet the demand for fuel of power generating equipment; Described gas-holder is pressure vessel, and safety valve, tensimeter are housed, and for storing the sun power fuel from part flow arrangement, realizes accumulation of energy, and fuel needed for power generating equipment supplied by output sun power fuel when solar energy resources is not enough.
Power generating equipment described in step 207 is oil-electric engine group, and burning sun power fuel exports electric energy, and the waste heat of discharge passes into preheating material in feed preheater.Power generating equipment can also adopt miniature combustion engine generating set.
Based on the structural representation of the power generation system of low-temperature solar energy in described in Fig. 1 and the complementation of fossil oil thermochemistry, and the electricity-generating method schema of the middle low-temperature solar energy shown in Fig. 2 and the complementation of fossil oil thermochemistry, in utilizing the present invention below in conjunction with specific embodiment, the electricity-generating method of low-temperature solar energy and the complementation of fossil oil thermochemistry further describes.
Embodiment
Low-temperature solar energy and methyl alcohol complementation during the present embodiment utilizes, preparation H
2with the synthetic gas of CO mol ratio about 2: 1 as sun power fuel, within fuel engine power generation unit realize electric energy as power generating equipment and export.The schematic diagram of the power generation system that composition graphs 3, Fig. 3 is low-temperature solar energy in providing according to the embodiment of the present invention and the complementation of methyl alcohol thermochemistry.
Methyl alcohol in feedstock supply unit 1 fully mixes in raw material blending device 2 with the liquid product from gas-liquid separator 8, by inputting raw material preheating device 4 with the volumetric flow rate of 5.57l/min through pipeline 13 by dispenser 3 after pipeline 12, discharge fume with the oil engine of 450 DEG C in raw material preheating device 4 and produce heat exchange, the methanol vapor of generation enters in solar absorption reactor 5 through piping 14.The sun power of the high fluence density that solar energy collector 6 is assembled is absorbed by absorption reactor thermally 5 and is converted into heat energy, drives methyl alcohol that the decomposition reaction of absorbing heat occurs under the effect of copper-based catalysts, produce H with the form of reaction heat
2with the synthetic gas sun power fuel of CO mol ratio 2: 1.Synthetic gas sun power fuel is by pipeline 15, and realize cooling under the effect of the recirculated cooling water in condenser 7, cooled mixture, through pipeline 16, realizes gas-liquid separation in gas-liquid separator 8.Isolated liquid-phase reaction product is unreacted methanol and a small amount of by product, and liquid-phase reaction product is got back in raw material blending device 2 through pipeline 17; Gas-phase reaction product mainly H
2with the synthetic gas of CO mol ratio 2: 1, synthetic gas sun power fuel passes through pipeline 18, under the effect of fuel diversion device 9, according to the demand for fuel of oil-electric engine group 11, flow to oil-electric engine group 11 to realize electric energy and export, or flow to gas-holder 10 and realize chemical energy and store.When solar energy resources is not enough, the synthetic gas sun power fuel in gas-holder 10 mixes with the synthetic gas produced in real time through pipeline 21, supplies the demand for fuel of oil-electric engine group 11, flows to oil-electric engine group 11 work done of burning generate electricity through pipeline 22.450 DEG C of flue gases that oil-electric engine group 11 is discharged pass into preheating methanol feedstock in raw material preheating device 4 by pipeline 23, are discharged in environment by pipeline 24.
Following embodiment can illustrate effect of the present invention:
Employing focusing ratio is the parabolic trough type solar energy collector of 82: 1, and heat collector A/F 5.76 meters, mirror scene amasss 715m
2, mirror field length 124m; Raw material is the liquid industrial methyl alcohol of 99.9% concentration under normal temperature, and in solar absorption reactor, filler is Cu/ZnO/Al
2o
3solid metal catalyst series, oil-electric engine group generating efficiency 42%, funnel temperature 450 DEG C.
From the liquid-phase product that separator lower end is separated, mainly unreacted methyl alcohol and a small amount of liquid by-product, the gaseous products mainly H that condensation separator upper end is separated
2and CO.
In the present embodiment, when solar irradiation is 600W/m
2material benzenemethanol inlet amount 5.57l/min, solar absorption reactor can produce the synthetic gas sun power fuel of 267kg/hr, wherein the synthetic gas sun power fuel of 43kg/hr enters gas-holder for chemical accumulation of energy, the synthetic gas sun power fuel of 224kg/hr is input in oil-electric engine group work done of burning, oil-electric engine group outwards exports 600kW electric work, and the clean generating efficiency of sun power reaches 28%, is far more than sun power and generates electricity separately the level of 10-17%.When solar irradiation intensity brings up to 900W/m
2time, solar absorption reactor can produce the synthetic gas sun power fuel of 401kg/hr, and the sun power fuel mass flow rates now flowing to gas-holder brings up to 177kg/hr, and the sun power fuel mass flow rates entering oil-electric engine group is still 224kg/hr, when solar irradiation intensity is reduced to 300W/m
2time, solar absorption reactor can produce the synthetic gas sun power fuel of 134kg/hr, the sun power fuel mass flow rates now flowing to gas-holder is 0, gas-holder exports the synthetic gas sun power fuel stored, the synthetic gas mass rate exported is 90kg/hr, thus the synthetic gas sun power fuel mass flow rates entering oil-electric engine group is still 224kg/hr, thus, oil-electric engine group steady operation is in declared working condition, breach and become the technical bottleneck that power generating equipment performance sharply declines under radiation parameter, achieve the adjustment of the operation of electric power system becoming low-temperature solar energy and the complementation of fossil oil thermochemistry under radiation parameter.
The present invention can be applied in multiple occasion, especially realizes the small-scale electric power supply of remote districts, in realization, low-temperature solar energy and fossil oil thermochemistry complemental power-generation open an approach.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. the power generation system of low-temperature solar energy and the complementation of fossil oil thermochemistry in a kind, comprise feedstock supply unit, raw material blending device, dispenser, raw material preheating device, solar absorption reactor, solar energy collector, condenser and gas-liquid separator, it is characterized in that, this system also comprises fuel diversion device, gas-holder and power generating equipment, wherein:
Feedstock supply unit, for storing fossil oil, and exports to raw material blending device by the fossil oil of storage;
Raw material blending device, for receiving and mixing from the fossil oil in feedstock supply unit with from the unreacted reactant separated in gas-liquid separator, and exports to dispenser by the mixture obtained;
Dispenser, for controlling the amount of the incoming stock primary heater unit of raw material in the unit time, exports to raw material preheating device by the raw material being received from raw material blending device by certain speed according to solar energy resources and user side demand;
Raw material preheating device, utilizes the waste-heat of power generating equipment to be received from the raw material of dispenser, produces fossil oil steam and exports to solar absorption reactor;
Solar absorption reactor, utilizes the solar heat absorbed to drive the fossil oil steam being received from raw material preheating device to carry out decomposing or reforming reaction under catalyst action, converts solar energy into the fuel chemical energy of Fu Qing, produce sun power fuel;
Solar energy collector, for the solar energy collecting of low energy-flux density being become low temperature heat energy in high fluence density in line focus mode, for the fossil oil conversion solar fuel reaction in solar absorption reactor provides heat;
Condenser, for cooling the reaction product being received from solar absorption reactor, and exports to gas-liquid separator by cooled reaction product;
Gas-liquid separator, for carrying out gas-liquid separation to the mixture receiving condenser cooling, the gas-phase reaction product obtained after separation outputs to fuel diversion device, and the liquid-phase reaction product obtained exports to raw material blending device;
Fuel diversion device, according to solar energy resources and user with the sun power fuel flow that control flow check can be needed to power generating equipment and gas-holder, realizes the regulation and control of solar heat Chemical complementation power generation system;
Gas-holder, when solar energy resources is sufficient, stores excessive sun power fuel, realizes chemical accumulation of energy; When solar energy resources is not enough, the sun power fuel refreshment in gas-holder enters power generating equipment, and the system that realizes exports regulation and control;
Power generating equipment, using sun power fuel as fuel, drives generating set generate electricity and export electric work;
Described raw material preheating device comprises interchanger, and utilize waste heat and the raw material heat exchange of power generating equipment, the fossil oil steam of generation passes into solar absorption reactor; Described fuel diversion device is flow control valve, control the flow of sun power flow in fuel to power generating equipment, make excessive sun power fuel enter gas-holder to store, sun power fuel refreshment when solar energy resources is not enough in regulation and control gas-holder enters power generating equipment, to meet the demand for fuel of power generating equipment; Described gas-holder is pressure vessel, for storing the sun power fuel from part flow arrangement, realizes accumulation of energy, and fuel needed for power generating equipment supplied by output sun power fuel when solar energy resources is not enough; Described power generating equipment is oil engine unit or miniature combustion engine generating set, and burning sun power fuel exports electric energy, and the waste heat of discharge passes into preheating material in feed preheater.
2. the power generation system of middle low-temperature solar energy according to claim 1 and the complementation of fossil oil thermochemistry, is characterized in that, described feedstock supply unit is tanks, and the fossil oil wherein stored is methyl alcohol, ethanol or dme.
3. the power generation system of middle low-temperature solar energy according to claim 1 and the complementation of fossil oil thermochemistry, it is characterized in that, described raw material blending device is mixing tank, for being mixed with the unreacted reactant separated in gas-liquid separator by the fossil oil be received from head tank.
4. the power generation system of middle low-temperature solar energy according to claim 1 and the complementation of fossil oil thermochemistry, it is characterized in that, described dispenser is volume pump, for inputting raw material in the interchanger of raw material preheating device, according to solar energy resources and customer need regulation output material flow.
5. the power generation system of middle low-temperature solar energy according to claim 1 and the complementation of fossil oil thermochemistry, it is characterized in that, described solar absorption reactor is chemical reactor, its structure is tubulose, material is steel, copper or aluminium, copper system, nickel system or platinum palladium system solid metal catalyst series is loaded in pipe, outer tube surface scribbles selective plating sunlight to high-absorbility, antiradar reflectivity emittance, outer tube is provided with the lens of high-transmission rate, is vacuum or antivacuum between lens and pipe.
6. the power generation system of middle low-temperature solar energy according to claim 1 and the complementation of fossil oil thermochemistry, it is characterized in that, described solar energy collector adopts parabolic trough type concentration structure, described solar absorption reactor is positioned on the line focus line of described solar energy collector, parabola groove internal surface scribbles selective plating sunlight to high-reflectivity, low absorptivity, provides 150 DEG C to the heat energy of 300 DEG C of temperature ranges to the feed material degradation in solar absorption reactor or reforming reaction.
7. the power generation system of middle low-temperature solar energy according to claim 1 and the complementation of fossil oil thermochemistry, is characterized in that, described condenser is wall-type heat exchange equipment, adopts recirculated water to cool, is connected with recirculated cooling water.
8. the power generation system of middle low-temperature solar energy according to claim 1 and the complementation of fossil oil thermochemistry, it is characterized in that, gas-phase reaction product and liquid-phase reaction product is obtained after described gas-liquid separator separates, wherein gas-phase reaction product is sun power fuel hydrogen, carbon monoxide and a small amount of byproduct, and liquid-phase reaction product is unreacted fossil oil and water.
9. an electricity-generating method for low-temperature solar energy and the complementation of fossil oil thermochemistry in, be applied to the system according to any one of claim 1 to 8, it is characterized in that, the method comprises:
The unreacted reactant of the fossil oil that feedstock supply unit inputs by A, raw material blending device and gas-liquid separator input fully mixes, and exports to dispenser;
The raw material that raw material blending device inputs by B, dispenser exports to preheater by certain speed, and preheater carries out preheating to the raw material received, and then exports to solar absorption reactor;
C, solar absorption reactor utilize the solar heat absorbed to occur to decompose or reforming reaction in the reaction tubes of self for the raw material being received from preheater, and reaction product enters condenser;
Cooled reaction product from the reaction product of solar absorption reactor, and is exported to gas-liquid separator by the cooling of D, condenser;
E, gas-liquid separator carry out gas-liquid separation to the reaction product receiving condenser cooling, and the gas-phase reaction product obtained after separation exports to fuel diversion device, and the liquid-phase reaction product obtained exports to raw material blending device;
F, fuel diversion device control a certain amount of sun power flow in fuel to power generating equipment, make excessive sun power flow in fuel to gas-holder, or the sun power fuel in gas-holder are supplied flow to power generating equipment;
The burning of G, power generating equipment is from the sun power fuel of fuel diversion device, and export electric energy, the waste heat of discharge passes into preheating material in feed preheater;
Wherein, fuel diversion device described in step F is flow control valve, control the flow of sun power flow in fuel to power generating equipment, make excessive sun power fuel enter gas-holder to store, sun power fuel refreshment when solar energy resources is not enough in regulation and control gas-holder enters power generating equipment, to meet the demand for fuel of power generating equipment; Gas-holder described in step F is pressure vessel, for storing the sun power fuel from part flow arrangement, realizes accumulation of energy, and fuel needed for power generating equipment supplied by output sun power fuel when solar energy resources is not enough; Power generating equipment described in step G is oil engine or miniature combustion engine generating set, and burning sun power fuel exports electric energy, and the waste heat of discharge passes into preheating material in feed preheater.
10. the electricity-generating method of middle low-temperature solar energy according to claim 9 and the complementation of fossil oil thermochemistry, is characterized in that,
Feedstock supply unit described in steps A is tanks, and the fossil oil wherein stored is methyl alcohol, ethanol or dme;
Raw material blending device described in steps A is mixing tank, for being mixed with the unreacted reactant separated in gas-liquid separator by the fossil oil be received from head tank.
The electricity-generating method of 11. middle low-temperature solar energies according to claim 9 and the complementation of fossil oil thermochemistry, it is characterized in that, dispenser described in step B is volume pump, for inputting raw material in the interchanger of raw material preheating device, according to solar energy resources and customer need regulation output material flow.
The electricity-generating method of 12. middle low-temperature solar energies according to claim 9 and the complementation of fossil oil thermochemistry, it is characterized in that, described step C comprises:
The raw material that raw material preheating device exports to solar absorption reactor is becoming superheated vapo(u)r after raw material preheating device preheating and the evaporation of solar absorption reactor, under 150 to 300 DEG C of temperature of reaction and copper system, nickel system or the solid metal catalyst series effect of platinum palladium system, the solar energy of collecting from solar energy collector is utilized to occur to decompose or reforming reaction, gas-phase reaction product is sun power fuel hydrogen, carbon monoxide and a small amount of byproduct, liquid-phase reaction product is unreacted fossil oil and water, and this mixture enters condenser from solar absorption reactor.
The electricity-generating method of 13. middle low-temperature solar energies according to claim 9 and the complementation of fossil oil thermochemistry, is characterized in that, in step D, condenser is wall-type heat exchange equipment, adopts recirculated water to cool, is connected with recirculated cooling water.
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