CN103604108B - 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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- CN103604108B CN103604108B CN201310497834.3A CN201310497834A CN103604108B CN 103604108 B CN103604108 B CN 103604108B CN 201310497834 A CN201310497834 A CN 201310497834A CN 103604108 B CN103604108 B CN 103604108B
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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 undoubtedly for herein is provided a new outlet.China's land surface 9,600,000 km
2, occupy 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 solar energy every year and about have 69,000 hundred million tons of coals.Slightly larger than 2200h during its sunshine in middle age, annual solar radiation total amount is higher than 5016MJ/m
2area account for more than 2/3 of national total area.Be equivalent to have 4500-5000 hundred million tons to mark coal every year 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, emissions reduction, safe use etc. aspect is with the obvious advantage.Current solar thermal utilization is only only limitted to low-temperature water heating device, and middle high-temperature hot utilizes and not yet gets involved, the project that in industry, agricultural, business, high temperature utilizes without thunder also without raindrop.Hinder the most significant challenge of China photo-thermal development to be the not yet ripe localized photo-thermal comprehensive utilization technique being 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 boiler flue afterbody waste heat recovery energy can also be utilized supporting for solar energy with boiler, energy-saving effect is more remarkable.
Slot type, tower, dish-style is divided in solar energy thermal-power-generating.Large-scale production technical requirement in solar energy condenser lens field is high, and installation difficulty is comparatively large, and in solar heat power generation system, account for more than 60% of whole system investment, therefore, developing low-cost, high efficiency solar energy condenser lens field are key points.Compared with above three kinds of Jing Chang, steel needed for trough system unit are and glass mirror material minimum, cost is low, capacity is changeable, ground is placed and safeguarded easy for installation, and all concentrating collectors can synchronized tracking, and cost reduces greatly.Therefore, it is large that trough type solar power generation has scale, the features such as the life-span is long, and cost is low, convenient for installation and maintenance, is applicable to very much business and generates electricity by way of merging two or more grid systems.
Heat-pump-type solar biomass boiler is the another kind of form of heat-pump-type Industrial Boiler, is characterized in the simple heat production characteristic keeping original boiler, utilizes heat pump techniques to combine with trough type solar heat-collector, make system have the function being 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, the low grade heat energy of environment (solar energy) and used heat (smoke discharging residual heat) is changed into the middle taste heat energy of heat supply, thus realizes " heat energy increment ".Utilize the double action that vapours recompresses, the demand of boiler high temperature high steam can be reduced further, thus reduce primary energy consumption further.
Summary of the invention
The object of the invention is to improve the steam generator system thermal efficiency, promote that clean energy resource utilizes, a kind of high efficiency is provided, make full use of fume afterheat and regenerative resource (solar energy) and reduce the double action heat-pump-type solar industry steam generator system and 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, first outlet of softening water tank, feed pump, Boiler High Pressure steam generator, one-level heat pump injector first entrance, secondary heat pump injector first entrance is connected in turn, second outlet of softening water tank, choke valve, condensing evaporimeter, hot water storage tank first entrance, first magnetic valve, trough type solar heat-collector, second magnetic valve, solar still entrance, secondary heat pump injector second entrance is connected in turn, the condensation-water drain of solar still is connected with hot water storage tank second entrance through the 3rd magnetic valve, secondary heat pump injector is provided with two outlets, secondary heat pump injector first exports and is connected with one-level heat pump injector second entrance, the outlet of secondary heat pump injector second is delivery outlet.
The method of double action heat-pump-type solar industry boiler, it is characterized in that the water under small pump extraction 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 directly supplies heat by fuel, thus produces temperature T in boiler
hfor 260-320 DEG C, pressure P
hfor the HTHP superheated vapour of 1.5-2.5MPa, afterwards HTHP water vapour through pipeline enter one-level heat pump injector for; Another road water in softening water tank is then enter condensing evaporimeter through choke valve, utilizes the temperature T discharged from boiler
y1for the high-temperature flue gas of 110-180 DEG C heats the water entered in condensing evaporimeter, exhaust gas temperature T
y2for 60-80 DEG C, thus take full advantage of fume afterheat, greatly reduce exhaust gas temperature and the waste heat loss of flue gas, the water flowing through condensing evaporimeter enters hot water storage tank again, then heats in trough type solar heat-collector, produces temperature T
01temperature T is produced for the high-temperature water of 140-180 DEG C enters evaporator evaporation through the second magnetic valve
s 2for 180-200 DEG C, pressure P
s 2for the water vapour of 0.3-0.5MPa, the temperature and pressure of the water vapour in evaporimeter is all low relative to the high temperature and high pressure steam in Boiler High Pressure steam generator, therefore be called low temperature and low pressure steam, high temperature and high pressure steam sprays after entering one-level heat pump injector, thus generation pressure differential, the part of backflow is exported steam and suck one-level heat pump injector, two parts steam converges generation, until first injector outlet vapor enters secondary heat pump injector.First injector outlet vapor continues high velocity jet after entering second injector, and the low temperature and low pressure water vapor in evaporimeter is sucked second injector by the pressure differential of generation, thus achieves converging of two parts steam, and final mixing produces temperature T
stfor 220-260 DEG C, pressure P
stfor the output steam of 0.45-0.7MPa exports, part exports steam will be back to first injector for use by reflux line.Part water vapour in evaporimeter can be condensed into water, and these water send 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 regulating flowback steam flow easily, reaching the object to exporting steam flow and state modulator according to actual operation requirements.
2, the present invention's double action of utilizing vapours to recompress, reduces the demand of boiler high temperature high steam further, greatly improves the thermal efficiency of pumping system, reduce 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, effective utilization has been carried out to boiler discharging flue gas waste heat, thus reduced the temperature of fume emission, improve the thermal efficiency of boiler entirety.
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 rating, meets the requirement of different heat user.The low-pressure steam sucked by steam jet heat pump both can be the exhaust steam diffused, and also can be the flash steam that condensate water produces, low enthalpy heat energy was fully used, reach the object of economize energy.
6, the injector that the present invention uses can ensure that pressure of steam supply is stablized, and have good practicality, 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.
Detailed description of the invention
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, first magnetic valve 12, 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, first outlet of softening water tank 2, feed pump 1, Boiler High Pressure steam generator 5, one-level heat pump injector 6 first entrance, secondary heat pump injector 7 first entrance is connected in turn, second outlet of softening water tank 2, choke valve 3, condensing evaporimeter 10, hot water storage tank 4 first entrance, first magnetic valve 12, trough type solar heat-collector 9, second magnetic valve 13, solar still 8 entrance, secondary heat pump injector 7 second entrance is connected in turn, the condensation-water drain of solar still 8 is connected with hot water storage tank 4 second entrance through the 3rd magnetic valve 14, secondary heat pump injector 7 is provided with two outlets, secondary heat pump injector 7 first outlet is connected with one-level heat pump injector 6 second entrance, secondary heat pump injector 7 second exports as 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 brings 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 exporting vapor (steam) temperature, P
stfor exporting steam pressure, G
wfor superheat steam flow, G is for exporting steam flow, G
s 1for flowback steam flow, P
s 1for flowback 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 first injector outlet vapor flow, P
st 1for first injector outlet vapor pressure, G
st 2for second injector outlet vapor flow, P
st 2for second injector outlet vapor pressure.
In system and device, described softening water tank 2 is connected with condensing evaporimeter 10 respectively at 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, choke valve 3 is installed for adjust flux in the pipeline that softening water tank 2 is connected with condensing evaporimeter 10, a small pump 11 is housed for moisturizing for softening water tank 2 in addition.
Described condensing evaporimeter 10 is connected with smoke evacuation flue, and the part water 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, heat through trough type solar heat-collector 9 high-temperature water produced and enter solar still 8 evaporation generation 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 is controlled to send hot water storage tank 4 back to by the 3rd magnetic valve 14 by condensation pipe.
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, the high temperature and high pressure steam produced is sent in one-level heat pump injector 6 in boiler.
Described one-level heat pump injector 6 entrance point is connected with flowback steam pipeline 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 point is connected with solar still 8 with one-level heat pump injector 6 respectively by pipeline, and the port of export exports steam by pipeline, and part exports 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: small pump 11 water extracted 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 directly supplies heat by fuel, thus produces temperature T in boiler
hfor 260-320 DEG C, pressure P
hfor the HTHP superheated vapour of 1.5-2.5MPa, afterwards HTHP water vapour through pipeline enter one-level heat pump injector 6 for; Another road water in softening water tank 2 is then enter condensing evaporimeter 10 through choke valve 3, utilizes the temperature T discharged from boiler
y1for the high-temperature flue gas of 110-180 DEG C heats the water entered in condensing evaporimeter 10, exhaust gas temperature T
y2for 60-80 DEG C, thus take full advantage of fume afterheat, greatly reduce exhaust gas temperature and the waste heat loss of flue gas, the water flowing through condensing evaporimeter 10 enters hot water storage tank again, then heats in trough type solar heat-collector 9, produces temperature T
01generation temperature T is evaporated for the high-temperature water of 140-180 DEG C enters evaporimeter 8 through the second magnetic valve (13)
s 2for 180-200 DEG C, pressure P
s 2be about the water vapour of 0.3-0.5MPa, the temperature and pressure of the water vapour in evaporimeter 8 is all low relative to the high temperature and high pressure steam in Boiler High Pressure steam generator 5, therefore be called low temperature and low pressure steam, high temperature and high pressure steam sprays after entering one-level heat pump injector 6, thus generation pressure differential, the part of backflow is exported steam and suck one-level heat pump injector 6, two parts steam converges generation, until first injector outlet vapor enters secondary heat pump injector 7.Continue high velocity jet after first injector 6 outlet vapor enters second injector 7, the low temperature and low pressure water vapor in evaporimeter 8 is sucked second injector 7 by the pressure differential of generation, thus achieves converging of two parts steam, and final mixing produces temperature T
stfor 220-260 DEG C, pressure P
stfor the output steam of 0.45-0.7MPa exports, part exports steam will be back to first injector 6 for use by reflux line.Part water vapour in evaporimeter 8 can be condensed into water, and these water control to send hot water storage tank back to 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, thus produces pressure differential, the part of backflow is exported steam and sucks one-level heat pump injector, two parts steam converges generation, until produce first injector outlet vapor to enter secondary heat pump injector.First injector outlet vapor continues high velocity jet after entering second injector, low temperature and low pressure water vapor in evaporimeter is sucked second injector by the pressure differential produced, thus achieve converging of two parts steam, final mixing produces the output steam output meeting certain parameter and require, part exports steam will be back to first injector for use by reflux line.
Embodiment
Below in conjunction with instantiation, the present invention is set forth, but the present invention can not be limited by any way.
First order heat pump in this example drives steam parameter to be respectively: temperature T
h=300 DEG C, pressure P=2.5Mpa, flow G
w=5t/h, suction steam parameter is temperature T
s 1=218 DEG C, pressure P
s 1=0.49Mpa, flow G
s 1=3t/h, output steam parameter is temperature T
st 1=250 DEG C, 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 first time heat pump output steam parameter, suction steam parameter is temperature T
s 2=180 DEG C, pressure P
s 2=0.3Mpa, flow G
s 2=4.48t/h, output steam parameter is temperature Tst=230 DEG C, pressure P
st=0.45Mpa, flow G
st=12.48t/h.Double action mass ratio of induced-to-inducing air reaches 0.936, external air demand is 9.48t/h, relative single-stage heat pump energy-conserving △ E accounts for 20.8%, illustrate and adopt double action heat pump injector can reduce primary energy consumption further, add 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, first outlet of softening water tank (2), feed pump (1), Boiler High Pressure steam generator (5), one-level heat pump injector (6) first entrance, secondary heat pump injector (7) first entrance is connected in turn, second outlet of softening water tank (2), choke valve (3), condensing evaporimeter (10), hot water storage tank (4) first entrance, first magnetic valve (12), trough type solar heat-collector (9), second magnetic valve (13), solar still (8) entrance, secondary heat pump injector (7) second entrance is connected in turn, the condensation-water drain of solar still (8) is connected with hot water storage tank (4) second entrance through the 3rd magnetic valve (14), secondary heat pump injector (7) is provided with two outlets, secondary heat pump injector (7) first outlet is connected with one-level heat pump injector (6) second entrance, secondary heat pump injector (7) second exports as delivery outlet.
2. one kind uses 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 under small pump (11) extraction 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) directly supplies heat by fuel, thus produces temperature T in boiler
hfor 260-320 DEG C, pressure P
hfor the HTHP superheated vapour of 1.5-2.5MPa, afterwards HTHP water vapour through pipeline enter one-level heat pump injector (6) for, another road water in softening water tank (2) is then enter condensing evaporimeter (10) through choke valve (3), utilizes the temperature T discharged from boiler
y1for the high-temperature flue gas of 110-180 DEG C heats the water entered in condensing evaporimeter (10), exhaust gas temperature T
y2for 60-80 DEG C, thus take full advantage of fume afterheat, greatly reduce exhaust gas temperature and the waste heat loss of flue gas, the water flowing through condensing evaporimeter (10) enters hot water storage tank again, then heats in trough type solar heat-collector (9), produces temperature T
01temperature T is produced for the high-temperature water of 140-180 DEG C enters evaporimeter (8) evaporation through the second magnetic valve (13)
s 2for 180-200 DEG C, pressure P
s 2for the water vapour of 0.3-0.5MPa, the temperature and pressure of the water vapour in evaporimeter (8) is all low relative to the high temperature and high pressure steam in Boiler High Pressure steam generator (5), therefore be called low temperature and low pressure steam, high temperature and high pressure steam sprays after entering one-level heat pump injector (6), thus generation pressure differential, the part of backflow is exported steam and sucks one-level heat pump injector (6), two parts steam converges generation, until first injector outlet vapor enters secondary heat pump injector (7), first injector (6) outlet vapor enters second injector (7) and continues high velocity jet afterwards, low temperature and low pressure water vapor in evaporimeter (8) is sucked second injector (7) by the pressure differential produced, thus achieve converging of two parts steam, final mixing produces temperature T
stfor 220-260 DEG C, pressure P
stfor the output steam of 0.45-0.7MPa exports, part exports steam will be back to first injector (6) for use by reflux line, part water vapour in evaporimeter (8) can be condensed into water, and these water controls to send hot water storage tank back to by the 3rd magnetic valve (14).
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| CN107137727A (en) * | 2017-03-28 | 2017-09-08 | 昆明理工大学 | A kind of automatic circulation device of utilization vapours to culture liquid disinfectant |
| 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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