CN103604108A - Dual functional heat pump type solar industrial boiler thermodynamic system and method thereof - Google Patents
Dual functional heat pump type solar industrial boiler thermodynamic system and method thereof Download PDFInfo
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- CN103604108A CN103604108A CN201310497834.3A CN201310497834A CN103604108A CN 103604108 A CN103604108 A CN 103604108A CN 201310497834 A CN201310497834 A CN 201310497834A CN 103604108 A CN103604108 A CN 103604108A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
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Abstract
The invention discloses a dual functional heat pump type solar industrial boiler thermodynamic system and a method thereof. According to the dual functional heat pump type solar industrial boiler thermodynamic system, a make-up water pump is connected with a demineralized water tank first inlet; a demineralized water tank first outlet, a feed pump, a high pressure vapor generator, a first level ejector first inlet and a second level ejector first inlet are sequentially connected; a demineralized water tank second inlet, a throttle valve, a condensed type evaporator, a thermal storage water tank first inlet, a first magnetic valve, a solar thermal collector, a second magnetic valve, a solar evaporator inlet and a second level ejector second inlet are sequentially connected; a condensate outlet of the solar evaporator is connected with a thermal storage water tank second inlet through a third magnetic valve; a second level ejector first outlet is connected with a first level ejector second inlet. The dual functional heat pump type solar industrial boiler thermodynamic system has the advantages of further reducing demand for boiler high temperature and high pressure steam and greatly improving the thermal efficiency of a pump system due to a recompression dual function of heat steam and achieving appreciation of heat values due to the fact that low-grade heat energy from the solar energy and the smoke discharging waste heat is converted into middle-grade heat energy for heat supply.
Description
Technical field
The present invention relates to a kind of double action heat-pump-type solar industry steam generator system and method thereof, belong to the technical field that clean energy resource utilizes.
Background technology
The world today is being faced with the problem of primary energy exhaustion day by day in short supply, greatly develops regenerative resource a new outlet is provided undoubtedly for this reason.China's land surface 9,600,000 km
2, occupying third place in the world, solar radiation ability is about 1.59 * 10
11kWh, is equivalent to that top is long-pending to be accepted every year solar energy and approximately have 69,000 hundred million tons of coals.During its sunshine in middle age, be slightly larger than 2200h, annual solar radiation total amount is higher than 5016MJ/m
2area account for the more than 2/3 of national total area.Be equivalent to have every year hundred million tons of mark coals of 4500-5000 to obtain with solar energy techniques.Solar thermal utilization is the key areas of renewable energy utilization, and technology maturation, has a extensive future.At energy substitution, reduce and discharge, use safely etc. aspect with the obvious advantage.At present solar thermal utilization only only limits to low-temperature water heating device, and middle high temperature heat utilization not yet gets involved, the project that in industry, agricultural, business, high temperature utilizes without thunder also without raindrop.Hindering the most significant challenge of China's photo-thermal development is the not yet ripe localized photo-thermal comprehensive utilization technique that is applicable to large-scale promotion of Current Domestic, also there is no the integrated and operating experience of commercialization solar thermal utilization whole system.Solar energy is combined not only alternative boiler steam supply and can also be utilized boiler flue afterbody waste heat recovery energy supporting for solar energy with boiler, energy-saving effect is more remarkable.
In solar energy thermal-power-generating, be divided into slot type, tower, dish formula.The large-scale production specification requirement of solar energy condenser lens field is high, and installation difficulty is larger, accounts for the more than 60% of whole system investment in solar heat power generation system, and therefore, developing low-cost, high efficiency solar energy condenser lens field are key points.Compare with above three kinds of Jing Chang, the required steel of slot type system unit area and glass mirror material are minimum, and cost is low, capacity is changeable, ground placement maintenance is easy for installation, and all concentrating collectors can synchronously be followed the tracks of, and cost reduces greatly.Therefore, the feature such as it is large that trough type solar power generation has scale, and the life-span is long, and cost is low, convenient for installation and maintenance is applicable to business and generates electricity by way of merging two or more grid systems very much.
Heat-pump-type solar biomass boiler is the another kind of form of heat-pump-type Industrial Boiler, is characterized in keeping the simple heat production characteristic of original boiler, utilizes heat pump techniques to combine with trough type solar heat-collector, makes system have the function that is directly converted to more heats.By improving the efficiency of system, increase substantially the thermal efficiency of pumping system.Heat pump utilizes steam generator to produce high-grade heat energy as power, changes the low grade heat energy of environment (solar energy) and used heat (smoke discharging residual heat) into middle taste heat energy that heat supply is used, thereby realizes " heat energy increment ".The double action of utilizing vapours recompression, can further reduce the demand of boiler high temperature high steam, thereby further reduce primary energy consumption.
Summary of the invention
The object of the invention is to improve the steam generator system thermal efficiency, promote clean energy resource utilization, a kind of high efficiency is provided, makes full use of fume afterheat and regenerative resource (solar energy) reduces double action heat-pump-type solar industry steam generator system and the method thereof that primary fuel consumes.
Double action heat-pump-type solar industry steam generator system comprises feed pump, softening water tank, choke valve, hot water storage tank, Boiler High Pressure steam generator, one-level heat pump injector, secondary heat pump injector, solar still, trough type solar heat-collector, condensing evaporimeter, small pump, the first magnetic valve, the second magnetic valve, the 3rd magnetic valve, small pump is connected with softening water tank import, softening water tank is provided with two outlets, the first outlet of softening water tank, feed pump, Boiler High Pressure steam generator, one-level heat pump injector the first entrance, secondary heat pump injector the first entrance is connected in turn, the second outlet of softening water tank, choke valve, condensing evaporimeter, hot water storage tank the first entrance, the first magnetic valve, trough type solar heat-collector, the second magnetic valve, solar still entrance, secondary heat pump injector the second entrance is connected in turn, the condensation-water drain of solar still is connected with hot water storage tank the second entrance through the 3rd magnetic valve, secondary heat pump injector is provided with two outlets, the first outlet of secondary heat pump injector is connected with one-level heat pump injector the second entrance, the second outlet of secondary heat pump injector is delivery outlet.
The method of double action heat-pump-type solar industry boiler, it is characterized in that the water that small pump extracts under normal temperature and pressure enters softening water tank, softening water tank Zhong mono-road water provides power directly to enter Boiler High Pressure steam generator through feed pump, Boiler High Pressure steam generator is directly supplied with heat by fuel, thereby in boiler, produces temperature T
hfor 260-320 ℃, pressure P
hfor the HTHP superheated vapour of 1.5-2.5MPa, afterwards the water vapour of HTHP through pipeline enter one-level heat pump injector for; Another road water in softening water tank is to enter condensing evaporimeter through choke valve, utilizes the temperature T of discharging from boiler
y1for the high-temperature flue gas of 110-180 ℃ heats the water entering in condensing evaporimeter, exhaust gas temperature T
y2for 60-80 ℃, thereby take full advantage of fume afterheat, greatly reduce exhaust gas temperature and the waste heat loss of flue gas, the water of the condensing evaporimeter of flowing through enters hot water storage tank again, then in trough type solar heat-collector, heats, and produces temperature T
01for entering evaporator evaporation through the second magnetic valve, the high-temperature water of 140-180 ℃ produces temperature T
s 2for 180-200 ℃, pressure P
s 2water vapour for 0.3-0.5MPa, high temperature and high pressure steam in the relative Boiler High Pressure steam generator of temperature and pressure of the water vapour in evaporimeter is all low, therefore be called low temperature and low pressure steam, high temperature and high pressure steam sprays after entering one-level heat pump injector, thereby generation pressure differential, the part output steam refluxing is sucked to one-level heat pump injector, and two parts steam converges generation, until one-level injector outlet steam enters secondary heat pump injector.After one-level injector outlet steam enters two-stage injection device, continue high velocity jet, the pressure differential of generation sucks two-stage injection device by the low temperature and low pressure water vapor in evaporimeter, thereby has realized converging of two parts steam, and final mixing produces temperature T
stfor 220-260 ℃, pressure P
stfor the output steam output of 0.45-0.7MPa, part is exported steam and will be back to one-level injector for use by reflux line.Part water vapour in evaporimeter can be condensed into water, and these water are sent hot water storage tank back to by the 3rd solenoid control.
Compared with prior art, the present invention has the following advantages:
1, the present invention adds feedback regulation link, can according to actual operation requirements, regulate backflow steam flow easily, reaches the object to output steam flow and parameter control.
2, the present invention utilizes the double action of vapours recompression, further reduces the demand of boiler high temperature high steam, greatly improves the thermal efficiency of pumping system, has reduced primary energy consumption.
3, adopt trough type solar heat-collector to heat the water in hot water storage tank, take full advantage of the solar energy of cleanliness without any pollution, be conducive to environmental protection and sustainable development.
4, in the present invention, boiler discharging flue gas waste heat has been carried out to effective utilization, thereby reduced the temperature of fume emission, improved the thermal efficiency of boiler integral body.
5, injector used in the present invention can carry out different structural designs to equipment according to the parameter of high and low pressure steam, obtains the steam of various pressure ratings, meets different hot users' requirement.The low-pressure steam sucking by steam jet heat pump can be both the exhaust steam diffusing, and can be also the flash steam that condensate water produces, and low enthalpy heat energy is fully used, and reached the object of saving the energy.
6, the injector that the present invention uses can guarantee that pressure of steam supply is stable, has good practicality, and energy-saving benefit is remarkable.
Accompanying drawing explanation
The main structure figure of Fig. 1 double action heat-pump-type solar industry steam generator system;
Fig. 2 double action vapours recompression energy flow chart.
The specific embodiment
As shown in Figure 1, double action heat-pump-type solar industry steam generator system comprises feed pump 1, softening water tank 2, choke valve 3, hot water storage tank 4, Boiler High Pressure steam generator 5, one-level heat pump injector 6, secondary heat pump injector 7, solar still 8, trough type solar heat-collector 9, condensing evaporimeter 10, small pump 11, the first magnetic valve 12, the second magnetic valve 13, the 3rd magnetic valve 14, small pump 11 is connected with softening water tank 2 imports, softening water tank 2 is provided with two outlets, the first outlet of softening water tank 2, feed pump 1, Boiler High Pressure steam generator 5, one-level heat pump injector 6 first entrances, secondary heat pump injector 7 first entrances are connected in turn, the second outlet of softening water tank 2, choke valve 3, condensing evaporimeter 10, hot water storage tank 4 first entrances, the first magnetic valve 12, trough type solar heat-collector 9, the second magnetic valve 13, solar still 8 entrances, secondary heat pump injector 7 second entrances are connected in turn, the condensation-water drain of solar still 8 is connected with hot water storage tank 4 second entrances through the 3rd magnetic valve 14, secondary heat pump injector 7 is provided with two outlets, 7 first outlets of secondary heat pump injector are connected with one-level heat pump injector 6 second entrances, 7 second outlets of secondary heat pump injector are delivery outlet.
In Fig. 1, Q
lfor fuel heat, Q
yfor boiler exhaust gas heat, Q
01for solar energy is for high-temperature-hot-water heat, Q
0for absorbing waste heat, Q
hfor superheated steam heat, Q
02for supplementing water is brought heat into, Q
ffor solar energy heat absorbing amount, T
y1, T
y2be respectively flue gas import and export temperature, T
hfor boiler overheating steam temperature, P
hfor boiler overheating steam pressure, T
0for demineralized water temperature, T
y0for hot water storage tank outlet temperature, T
stfor output vapor (steam) temperature, P
stfor output steam pressure, G
wfor superheat steam flow, G is output steam flow, G
s 1for backflow steam flow, P
s 1for backflow steam pressure, G
s 2for solar still steam flow, T
s 2for solar still vapor (steam) temperature, P
s 2for solar still steam pressure, G
st 1for one-level injector outlet steam flow, P
st 1for one-level injector outlet steam pressure, G
st 2for two-stage injection device outlet steam flow, P
st 2for two-stage injection device outlet steam pressure.
In system and device, described softening water tank 2 is respectively at being connected with condensing evaporimeter 10 with Boiler High Pressure steam generator 5, feed pump 1 is installed for supplying water in the pipeline that softening water tank 2 is connected with Boiler High Pressure steam generator 5, in the pipeline that softening water tank 2 is connected with condensing evaporimeter 10, choke valve 3 is installed for adjust flux, for softening water tank 2, a small pump 11 is housed for moisturizing in addition.
Described condensing evaporimeter 10 is connected with smoke evacuation flue, and the part water being flowed out by softening water tank 2 enters hot water storage tank 4 through condensing evaporimeter 10.
Described hot water storage tank 4 is connected with trough type solar heat-collector 9, the high-temperature water that 9 heating produce through trough type solar heat-collector enters solar still 8 evaporations and produces water vapour, a part of water vapour in solar still 8 is inhaled into secondary heat pump injector 7, part condensation is got off, and by condensation pipe, by the 3rd magnetic valve 14, is controlled and is sent back to hot water storage tank 4.
Described Boiler High Pressure steam generator 5 is directly supplied water by feed pump 1, and is directly connected with one-level heat pump injector 6, and the high temperature and high pressure steam producing in boiler is sent in one-level heat pump injector 6.
Described one-level heat pump injector 6 entrance points are connected with backflow jet chimney with high pressure steam generator 5 respectively by pipeline, and the port of export is connected with secondary heat pump injector 7.
Described secondary heat pump injector 7 entrance points are connected with solar still 8 with one-level heat pump injector 6 respectively by pipeline, and the port of export is exported steam by pipeline, and part is exported steam and flow to one-level heat pump injector by back of pipeline.
The method of double action heat-pump-type solar industry boiler is: the water that small pump 11 extracts under normal temperature and pressure enters softening water tank 2, softening water tank 2 Zhong mono-road water provide power directly to enter Boiler High Pressure steam generator 5 through feed pump 1, Boiler High Pressure steam generator 5 is directly supplied with heat by fuel, thereby in boiler, produces temperature T
hfor 260-320 ℃, pressure P
hfor the HTHP superheated vapour of 1.5-2.5MPa, afterwards the water vapour of HTHP through pipeline enter one-level heat pump injector 6 for; Another road water in softening water tank 2 is to enter condensing evaporimeter 10 through choke valve 3, utilizes the temperature T of discharging from boiler
y1for the high-temperature flue gas of 110-180 ℃ heats the water entering in condensing evaporimeter 10, exhaust gas temperature T
y2for 60-80 ℃, thereby take full advantage of fume afterheat, greatly reduce exhaust gas temperature and the waste heat loss of flue gas, the water of the condensing evaporimeter 10 of flowing through enters hot water storage tank again, then in trough type solar heat-collector 9, heats, and produces temperature T
01for entering evaporimeter 8 evaporations through the second magnetic valve (13), the high-temperature water of 140-180 ℃ produces temperature T
s 2for 180-200 ℃, pressure P
s 2the water vapour that is about 0.3-0.5MPa, high temperature and high pressure steam in the relative Boiler High Pressure steam generator 5 of temperature and pressure of the water vapour in evaporimeter 8 is all low, therefore be called low temperature and low pressure steam, high temperature and high pressure steam sprays after entering one-level heat pump injector 6, thereby generation pressure differential, the part output steam refluxing is sucked to one-level heat pump injector 6, and two parts steam converges generation, until one-level injector outlet steam enters secondary heat pump injector 7.One-level injector 6 outlet steam enter the rear continuation high velocity jet of two-stage injection device 7, and the pressure differential of generation sucks two-stage injection device 7 by the low temperature and low pressure water vapor in evaporimeter 8, thereby has realized converging of two parts steam, and final mixing produces temperature T
stfor 220-260 ℃, pressure P
stfor the output steam output of 0.45-0.7MPa, part is exported steam and will be back to one-level injector 6 for use by reflux line.Part water vapour in evaporimeter 8 can be condensed into water, and these water are controlled and sent back to hot water storage tank by the 3rd magnetic valve 14.
As shown in Figure 2, high temperature and high pressure steam sprays after entering one-level heat pump injector, thereby produces pressure differential, and the part output steam refluxing is sucked to one-level heat pump injector, two parts steam converges generation, until produce one-level injector outlet steam, enters secondary heat pump injector.After entering two-stage injection device, one-level injector outlet steam continues high velocity jet, the pressure differential producing sucks two-stage injection device by the low temperature and low pressure water vapor in evaporimeter, thereby realized converging of two parts steam, final mixing produces the output steam output that meets certain parameter requirement, and part is exported steam and will be back to one-level injector for use by reflux line.
Embodiment
Below in conjunction with instantiation, the present invention is set forth, but can not limit by any way the present invention.
First order heat pump in this example drives steam parameter to be respectively: temperature T
h=300 ℃, pressure P=2.5Mpa, flow G
w=5t/h, suction steam parameter is temperature T
s 1=218 ℃, pressure P
s 1=0.49Mpa, flow G
s 1=3t/h, output steam parameter is temperature T
st 1=250 ℃, pressure P
st 1=0.98Mpa, flow G
st 1=8t/h.
Second level heat pump drives steam parameter to be respectively: drive steam parameter to be the steam parameter of heat pump output for the first time, suction steam parameter is temperature T
s 2=180 ℃, pressure P
s 2=0.3Mpa, flow G
s 2=4.48t/h, output steam parameter is temperature T st=230 ℃, pressure P
st=0.45Mpa, flow G
st=12.48t/h.Double action mass ratio of induced-to-inducing air reaches 0.936, externally air demand is 9.48t/h, single-stage heat pump energy-conserving △ E accounts for 20.8% relatively, illustrate and adopt double action heat pump injector can further reduce primary energy consumption, increased clean energy resource (solar energy) proportion of utilization, further height system thermal efficiency.
Claims (2)
1. a double action heat-pump-type solar industry steam generator system, is characterized in that comprising feed pump (1), softening water tank (2), choke valve (3), hot water storage tank (4), Boiler High Pressure steam generator (5), one-level heat pump injector (6), secondary heat pump injector (7), solar still (8), trough type solar heat-collector (9), condensing evaporimeter (10), small pump (11), the first magnetic valve (12), the second magnetic valve (13), the 3rd magnetic valve (14), small pump (11) is connected with softening water tank (2) import, softening water tank (2) is provided with two outlets, the first outlet of softening water tank (2), feed pump (1), Boiler High Pressure steam generator (5), one-level heat pump injector (6) first entrances, secondary heat pump injector (7) first entrances are connected in turn, the second outlet of softening water tank (2), choke valve (3), condensing evaporimeter (10), hot water storage tank (4) first entrances, the first magnetic valve (12), trough type solar heat-collector (9), the second magnetic valve (13), solar still (8) entrance, secondary heat pump injector (7) second entrances are connected in turn, the condensation-water drain of solar still (8) is connected with hot water storage tank (4) second entrances through the 3rd magnetic valve (14), secondary heat pump injector (7) is provided with two outlets, (7) first outlets of secondary heat pump injector are connected with one-level heat pump injector (6) second entrances, (7) second outlets of secondary heat pump injector are delivery outlet.
2. one kind is used the method for the double action heat-pump-type solar industry boiler of system as claimed in claim 1, it is characterized in that the water that small pump (11) extracts under normal temperature and pressure enters softening water tank (2), softening water tank (2) Zhong mono-road water provides power directly to enter Boiler High Pressure steam generator (5) through feed pump (1), Boiler High Pressure steam generator (5) is directly supplied with heat by fuel, thereby in boiler, produces temperature T
hfor 260-320 ℃, pressure P
hfor the HTHP superheated vapour of 1.5-2.5MPa, afterwards the water vapour of HTHP through pipeline enter one-level heat pump injector (6) for, another road water in softening water tank (2) is to enter condensing evaporimeter (10) through choke valve (3), utilizes the temperature T of discharging from boiler
y1for the high-temperature flue gas of 110-180 ℃ heats the water entering in condensing evaporimeter (10), exhaust gas temperature T
y2for 60-80 ℃, thereby take full advantage of fume afterheat, greatly reduce exhaust gas temperature and the waste heat loss of flue gas, the water of the condensing evaporimeter (10) of flowing through enters hot water storage tank again, then in trough type solar heat-collector (9), heats, and produces temperature T
01for entering evaporimeter (8) evaporation through the second magnetic valve (13), the high-temperature water of 140-180 ℃ produces temperature T
s 2for 180-200 ℃, pressure P
s 2water vapour for 0.3-0.5MPa, high temperature and high pressure steam in the relative Boiler High Pressure steam generator of temperature and pressure (5) of the water vapour in evaporimeter (8) is all low, therefore be called low temperature and low pressure steam, high temperature and high pressure steam sprays after entering one-level heat pump injector (6), thereby generation pressure differential, the part output steam refluxing is sucked to one-level heat pump injector (6), two parts steam converges generation, until one-level injector outlet steam enters secondary heat pump injector (7), after entering two-stage injection device (7), one-level injector (6) outlet steam continues high velocity jet, the pressure differential producing sucks two-stage injection device (7) by the low temperature and low pressure water vapor in evaporimeter (8), thereby realized converging of two parts steam, final mixing produces temperature T
stfor 220-260 ℃, pressure P
stoutput steam output for 0.45-0.7MPa, part is exported steam and will be back to one-level injector (6) for use by reflux line, part water vapour in evaporimeter (8) can be condensed into water, and these water are controlled and sent back to hot water storage tank by the 3rd magnetic valve (14).
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| CN109612133A (en) * | 2018-12-31 | 2019-04-12 | 康进科 | A kind of solar water heater and electric heater water system |
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