CN104653241A - Waste heat recovery device for indirect air-cooling unit - Google Patents
Waste heat recovery device for indirect air-cooling unit Download PDFInfo
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- CN104653241A CN104653241A CN201310576830.4A CN201310576830A CN104653241A CN 104653241 A CN104653241 A CN 104653241A CN 201310576830 A CN201310576830 A CN 201310576830A CN 104653241 A CN104653241 A CN 104653241A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The invention relates to a waste heat recovery device for an indirect air-cooling unit. Air-cooling circulating water of a closed circulating cooling water system of the indirect air cooling unit is used as a heat source, primary air and secondary air of a boiler are heated through heaters, and the primary air heater and the secondary air heater are separately and respectively arranged in a primary air duct and a secondary air duct. Spiral finned tubes, H-shaped finned tubes, steel aluminum composite finned tubes and finned tube or light tubes in other forms can be adopted as heat exchange elements of the heaters, air-cooling circulating water flows in the tubes and the primary air and secondary air flow outside the tubes, so that heat exchange is achieved. The waste heat recovery device for the indirect air-cooling unit is stable in running, safe, environment-friendly and has an excellent energy-saving effect.
Description
Technical field
The invention belongs to power environment protection field, particularly relate to a kind of indirect air cooling unit waste heat recovering device.
Background technique
The operation of modern large-size thermal power plant needs to consume water resources, and builds jumbo thermal power plant in water-deficient area and adopt the new type of cooling to get rid of waste heat with regard to needing.The thermal power generating technology adopting Air-cooled Unit is a kind of water-saving thermal power generating technology, is widely applied in water scarcity the Northwest of China at present.
Air cooling technique is divided into direct air cooling and indirect air cooling, and indirect air cooling unit is generally made up of the systems such as surface condenser, air cooling heat radiator, circulating water pump and nitrogen filled protection system, circulating water system system and radiator purging system and air cooling tower.Indirect air cooling unit is substantially similar with conventional wet type cooling unit, and difference is to adopt air cooling tower to replace clammy tower, and replace Open recirling cooling water system by Enclosed Type Circulating Cooling Water System, circulating water adopts demineralized water.
In indirect air cooling unit; the temperature generally entering the circulating water of surface condenser can higher than ambient temperature about 20 DEG C; in surface condenser, absorb heat makes the exhaust steam of steam turbine condense; the temperature of the circulating water of surface condenser outlet usually can higher than ambient temperature about 30 DEG C; enter the air cooling heat radiator in air cooling tower (Air-Cooling Island) again; returned to higher than ambient temperature about 20 DEG C by ambient air cooling, recycle.
In addition, in large-scale coal-fired electric generation furnace, usually all First air, secondary air system can be set.First air is mainly for delivery of fuel, and Secondary Air is mainly used in combustion-supporting.First air, Secondary Air take from ambient air, need to carry out preheating in the air preheater in boiler before utilization.
As can be seen here, in existing indirect air cooling unit, there is air cooling circulating water on the one hand needs by Air flow, there is again the First air of boiler on the other hand, Secondary Air needs will take from the air preheat of environment.In view of this, the design people is based on the research for many years to Air-cooled Unit, and on the basis of abundant practical experience and professional knowledge, actively in addition research and innovation, creates the new technology of a kind of indirect air cooling unit heat recovery finally.
Summary of the invention
The object of the invention is to, a kind of new indirect air cooling unit waste heat recovering device is proposed, technical problem to be solved makes it be needed by indirect air cooling unit the waste heat of the circulating water of cooling to be used for heating the First air and Secondary Air that need preheating, to reduce First air, Secondary Air caloric receptivity in the boiler, thus reach energy-conservation object.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of indirect air cooling unit waste heat recovering device that the present invention proposes, it comprises: First air heater, Secondary Air heater and system pipeline; Wherein, described First air heater is arranged in First air air channel; Described Secondary Air heater is arranged in Secondary Air air channel; The surface condenser of recirculating cooling water system connecting described indirect air cooling unit and the pipeline of Air-Cooling Island are provided with intake and backwater mouth; Wherein, described intake is arranged on the pipeline at air cooling circulating water outlet place of described surface condenser; Described backwater mouth is arranged on the pipeline between the air cooling circulating water outlet of described surface condenser and the air cooling circulating water entrance of described Air-Cooling Island, and between described intake and the air cooling circulating water entrance of described Air-Cooling Island, or be arranged on the pipeline between the air cooling circulating water outlet of described Air-Cooling Island and the air cooling circulating water entrance of described surface condenser; Described First air heater and described Secondary Air heater are parallel between described intake and described backwater mouth by described system pipeline.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid indirect air cooling unit waste heat recovering device, the described system pipeline be wherein connected with described First air heater and described Secondary Air heater at described intake is provided with system inlet valve; The described system pipeline that described backwater mouth is connected with described First air heater and described Secondary Air heater is provided with system outlet valve, described system pipeline between described system outlet valve and described First air heater and described Secondary Air heater is also provided with dewatering outlet, and in described dewatering outlet, place is provided with discharging valve.
Aforesaid indirect air cooling unit waste heat recovering device, wherein said First air heater and described Secondary Air heater are that its one end is connected to same described system inlet valve by same described system pipeline after in parallel by described system pipeline, described intake is connected to again by described system inlet valve, its the other end is connected to same described system outlet valve by same described system pipeline, then is connected to described backwater mouth by described system outlet valve; Described dewatering outlet is one, be arranged at make described First air heater in parallel with described Secondary Air heater described system pipeline on, or be arranged at described First air heater with on the described system pipeline be connected with described system outlet valve after the parallel connection of described Secondary Air heater.
Aforesaid indirect air cooling unit waste heat recovering device, wherein in the described system pipeline making described First air heater in parallel with described Secondary Air heater, the described system pipeline be connected with the water intake of described First air heater is provided with First air heater water side modulating valve, the described system pipeline be connected with the water intake of described Secondary Air heater is provided with Secondary Air heater water side modulating valve.
Aforesaid indirect air cooling unit waste heat recovering device, is wherein provided with pressurization cycle pump at described First air heater with on the described system pipeline be connected with described system inlet valve after the parallel connection of described Secondary Air heater.
Aforesaid indirect air cooling unit waste heat recovering device, the described system pipeline be wherein connected with described First air heater at described intake is provided with First air heater water side modulating valve; The described system pipeline that described intake is connected with described Secondary Air heater is provided with Secondary Air heater water side modulating valve.
Aforesaid indirect air cooling unit waste heat recovering device, the described system pipeline be wherein connected with described First air heater and described Secondary Air heater at described intake is provided with pressurization cycle pump.
Aforesaid indirect air cooling unit waste heat recovering device, the heating surface of wherein said First air heater and described Secondary Air heater adopts fin tube or the light pipe of spiral fin coil, H type extended surface tube, steel-aluminum composite fin tube, other form.
The present invention compared with prior art has obvious advantage and beneficial effect.By technique scheme, a kind of indirect air cooling unit of the present invention waste heat recovering device at least has following advantages and beneficial effect:
One, indirect air cooling unit waste heat recovering device of the present invention can improve the entering air temp of boiler First air, Secondary Air, reduces the coal consumption of unit, improves the Economy of power plant, simultaneously the discharge of decreasing pollution.
Two, indirect air cooling unit waste heat recovering device of the present invention can reduce the temperature of air cooling circulating water, thus reduces the investment of Air-Cooling Island; And if the investment maintaining Air-Cooling Island is constant, then air cooling heat transfer effect can be strengthened, reduce turbine back pressure, improve the Economy of unit.
Three, indirect air cooling unit waste heat recovering device structure of the present invention is simple, operates steadily, safety.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of specification, and can become apparent to allow above and other object of the present invention, feature and advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a preferred embodiment of a kind of indirect air cooling unit of the present invention waste heat recovering device.
1: First air heater 2: Secondary Air heater
3: First air heater water side modulating valve 4: Secondary Air heater water side modulating valve
5: pressurization cycle pump 6: system inlet valve
7: system outlet valve 8: system pipeline
9: discharging valve 10: surface condenser
11: Air-Cooling Island 12: recycle pump
13: air preheater 14: boiler
15: steam turbine 16: condensate pump
17: low-pressure heater 18: oxygen-eliminating device
19: feed water pump 20: high-pressure heater
21: primary air fan 22: overfire air fan
Embodiment
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to a kind of its embodiment of indirect air cooling unit waste heat recovering device proposed according to the present invention, structure, step, feature and effect thereof, be described in detail as follows.
Aforementioned and other technology contents, Characteristic for the present invention, can know and present in the detailed description of following cooperation with reference to graphic preferred embodiment.By the explanation of embodiment, should to the present invention for the technological means reaching predetermined object and take and effect obtain one more deeply and concrete understanding, but institute's accompanying drawings is only to provide with reference to the use with explanation, is not used for being limited the present invention.
Referring to shown in Fig. 1, is the schematic diagram of a preferred embodiment of a kind of indirect air cooling unit of the present invention waste heat recovering device.
Indirect air cooling unit waste heat recovering device of the present invention forms primarily of First air heater 1, Secondary Air heater 2 and system pipeline 8.Wherein, First air heater 1 is arranged in First air air channel, and Secondary Air heater 2 is arranged in Secondary Air air channel.The surface condenser 10 of recirculating cooling water system connecting indirect air cooling unit and the pipeline of Air-Cooling Island 11 are provided with intake and backwater mouth.Wherein, intake is arranged on the pipeline at air cooling circulating water outlet place of surface condenser 1; Backwater mouth is arranged on the pipeline between the air cooling circulating water outlet of surface condenser 10 and the air cooling circulating water entrance of Air-Cooling Island 11, and between intake and the air cooling circulating water entrance of Air-Cooling Island 11, or be arranged on the pipeline between the air cooling circulating water outlet of Air-Cooling Island 11 and the air cooling circulating water entrance of surface condenser 10.First air heater 1 and Secondary Air heater 2 are parallel between intake and backwater mouth by system pipeline 8.
The recirculating cooling water system of indirect air cooling unit the exhaust steam of steam turbine 15 is condensed by surface condenser 10, make air cooling circulating water be produced hot water by heating in surface condenser 10 simultaneously, and by recycle pump 12, hot water is sent into Air-Cooling Island 11, air cooling circulating water is made to produce cold water through Air flow in Air-Cooling Island 11, send cold water back to surface condenser 10 by recycle pump 12 again, recycle.Indirect air cooling unit waste heat recovering device of the present invention is a UTILIZATION OF VESIDUAL HEAT IN branch road on the pipeline of the recirculating cooling water system being connected to indirect air cooling unit, the hot water produced in the surface condenser 10 of recirculating cooling water system is introduced First air heater 1 and Secondary Air heater 2 by intake by system pipeline 8 by it, add the air flowed in heat primary air air channel and Secondary Air air channel as hot side working medium, the temperature of First air and Secondary Air is improved.Meanwhile, hot water is cooled by First air and Secondary Air in First air heater 1 and Secondary Air heater 2, and temperature reduces, and is sent back to recirculating cooling water system again, recycles by system pipeline 8 by backwater mouth.
The present invention utilizes in the recirculating cooling water system of indirect air cooling unit to need the waste heat of the air cooling circulating water cooled to heat the First air and Secondary Air that need preheating, make to be improved by the First air after heating and Secondary Air temperature, subsequently again by air preheater 13, continue degree of depth heating.Because the temperature of the First air and Secondary Air that enter air preheater 13 improves, therefore compared to the First air and the Secondary Air that do not improve temperature and enter air preheater 13, when reaching equal design temperature in air preheater 13, the heat required for air preheater 13 of the present invention is used to reduce, thus the caloric receptivity of boiler 14 can be reduced, fuel saving, produces economic benefit.
Meanwhile, the air cooling circulating water entering indirect air cooling unit waste heat recovering device of the present invention can be cooled in First air heater 1 and Secondary Air heater 2, and temperature reduces, and is sent back to the recirculating cooling water system of indirect air cooling unit again, recycles.Therefore, under the condition keeping the identical entering water temp of surface condenser 10 and flow, the present invention can reduce the heat exchange amount of Air-Cooling Island 11, thus makes indirect air cooling unit suitably can reduce the heating surface of Air-Cooling Island 11 after using the present invention, saves the investment of Air-Cooling Island.
The backwater mouth of indirect air cooling unit waste heat recovering device of the present invention can be arranged on (namely before Air-Cooling Island 11) between the air cooling circulating water outlet of surface condenser 10 and the air cooling circulating water entrance of Air-Cooling Island 11, also can be arranged on (namely after Air-Cooling Island 11) between the air cooling circulating water outlet of Air-Cooling Island 11 and the air cooling circulating water entrance of surface condenser 10.Wherein, when backwater mouth is arranged on after Air-Cooling Island 11, the temperature of backwater mouth backwater otherwise the temperature of the air cooling circulating water higher than the air cooling circulating water outlet of Air-Cooling Island 11, in order to avoid the temperature improving that surface condenser 10 intakes, reduce the internal efficiency of steam turbine 15.
First air heater 1 and the Secondary Air heater 2 of indirect air cooling unit waste heat recovering device of the present invention are a kind of air-to-water heat exchangers, its heating surface can adopt the heat exchanging tube such as fin tube or light pipe of spiral fin coil, H type extended surface tube, steel-aluminum composite fin tube, other form, make circulating water at heat exchange Bottomhole pressure, air flows outward at heat exchanging tube.When First air heater 1 and Secondary Air heater 2 adopt the heat exchanging tube of the outer watchband extended surface of fin tube or other form, can air-side heat exchanger be strengthened, make the compact structure of heater.Under normal conditions, the circulating water in heat exchanging tube can higher than external air temperature about 30 DEG C, and heat to be delivered to the air outside heat exchanging tube by circulating water by heating surface, First air and Secondary Air are heated thus, and temperature raises.Meanwhile, the circulating water in heat exchanging tube, by Air flow, produces the circulating water (cold water) that temperature is lower.The circulating water that this temperature is lower is sent back to the recirculating cooling water system of indirect air cooling unit again through system pipeline 8.
The system pipeline 8 that indirect air cooling unit waste heat recovering device of the present invention is connected with First air heater 1 and Secondary Air heater 2 at intake can be provided with system inlet valve 6, the system pipeline 8 that backwater mouth is connected with First air heater 1 and Secondary Air heater 2 can be provided with system outlet valve 7, system pipeline 8 simultaneously between system outlet valve 7 and First air heater 1 and Secondary Air heater 2 also can be provided with dewatering outlet, and discharging valve 9 can be provided with at dewatering outlet place.Indirect air cooling unit waste heat recovering device of the present invention, by arranging system inlet valve 6 and system outlet valve 7, makes whole device can be out of service at any time.When accident conditions, system inlet valve 6 and the connection between system outlet valve 7 shut-off means and recirculating cooling water system can be passed through, open discharging valve 9 again the circulating water in device is got rid of, device can be made out of service rapidly, thus ensure the safe operation of whole indirect air cooling unit.
Because the flow of First air differs larger usually with the flow of Secondary Air, therefore need to regulate and distribute the flow of the circulating water entering First air heater 1 and Secondary Air heater 2, make the flow of the circulating water entering First air heater 1 and Secondary Air heater 2 and the air volumematching of First air and Secondary Air.Indirect air cooling unit waste heat recovering device of the present invention can arrange First air heater water side modulating valve 3 by the system pipeline 8 that is connected with First air heater 1 at intake, the system pipeline 8 that intake is connected with Secondary Air heater 2 arranges Secondary Air heater water side modulating valve 4, circulating water is made first to carry out regulating and distributing of flow by First air heater water side modulating valve 3 and Secondary Air heater water side modulating valve 4 before entering First air heater 1 and Secondary Air heater 2, thus make to enter the circulating water flow of First air heater 1 and Secondary Air heater 2 and the air volumematching of First air and Secondary Air.
The system pipeline 8 that indirect air cooling unit waste heat recovering device of the present invention is connected with First air heater 1 and Secondary Air heater 2 at intake can be provided with pressurization cycle pump 5, to provide enough power to be forced to send into First air heater 1 and Secondary Air heater 2 by air cooling circulating water, and get back to the recirculating cooling water system of indirect air cooling unit after adding heat primary air and Secondary Air cooling.Before backwater mouth of the present invention can be arranged on Air-Cooling Island 11, also after can being arranged on Air-Cooling Island 11, when the pressure difference in the recirculating cooling water system at indirect air cooling unit between intake and backwater mouth position meet device circulate needs time, pressurization cycle pump 5 can not be set.Such as, before intake is positioned at Air-Cooling Island, after backwater mouth is positioned at Air-Cooling Island, now have pressure difference between intake and backwater mouth, when this pressure difference meets device circulation needs, pressurization cycle pump 5 can not be set.
In a preferred embodiment of the present invention, as shown in Figure 1, First air heater 1 and the Secondary Air heater 2 of indirect air cooling unit waste heat recovering device of the present invention are being connected to same system inlet valve 6 by system pipeline 8 its one end rear in parallel by same system pipeline 8, intake is connected to again by system inlet valve 6, its the other end is connected to same system outlet valve 7 by same system pipeline 8, then is connected to backwater mouth by system outlet valve 7.It has a dewatering outlet, this dewatering outlet can be arranged at make First air heater 1 in parallel with Secondary Air heater 2 system pipeline 8 on, or be arranged at First air heater 1 and Secondary Air heater 2 in parallel after on the system pipeline 8 that is connected with system outlet valve 7.In this preferred embodiment, dewatering outlet is arranged to make First air heater 1 with on the pipeline be connected with the water outlet of Secondary Air heater 2 in the system pipeline 8 of Secondary Air heater 2 parallel connection.Wherein, in this preferred embodiment, in the system pipeline 8 making First air heater 1 in parallel with Secondary Air heater 2, the system pipeline 8 be connected with the water intake of First air heater 1 is also provided with First air heater water side modulating valve 3, the system pipeline 8 be connected with the water intake of Secondary Air heater 2 is also provided with Secondary Air heater water side modulating valve 4.And the system pipeline 8 be connected with system inlet valve 6 after First air heater 1 is in parallel with Secondary Air heater 2 is also provided with pressurization cycle pump 5.
The indirect air cooling unit waste heat recovering device of this preferred embodiment is when normally working, system inlet valve 6 and system outlet valve 7 are opened, the air cooling circulating water (hot water) of the recirculating cooling water system of indirect air cooling unit enters system pipeline 8 by intake, and be pushed by pressurization cycle pump 5 deliver to boiler 14 an air channel and secondary flue in the First air heater 1 that arranges and Secondary Air heater 2, add heat primary air and Secondary Air.Meanwhile, hot water is cooled by First air and Secondary Air in First air heater 1 and Secondary Air heater 2, is pushed into again system pipeline 8, and is sent back to recirculating cooling water system by backwater mouth, recycle by pressurization cycle pump 5.Wherein, the First air heater water side modulating valve 3 that the present invention can be arranged by the water side entrance place of First air heater 1 and Secondary Air heater 2 and Secondary Air heater water side modulating valve 4 carry out regulating water-quantity, thus control the temperature rise of First air and Secondary Air, and with the temperature of time-control apparatus backwater.
When different unit loads, the air quantity of First air and Secondary Air can change, in this preferred embodiment, carry out the total discharge requirement of First air heater 1 and Secondary Air heater 2 water side by pressurization cycle pump 5 frequency conversion, adapt to different load variations with this.
Certainly, the present invention is not as limit, such as: in another embodiment of the invention, the First air heater 1 of indirect air cooling unit waste heat recovering device of the present invention and Secondary Air heater 2 also can be parallel between intake and backwater mouth respectively by different system pipelines 8, namely in indirect air cooling unit waste heat recovering device of the present invention, the system pipeline 8 that First air heater 1 is connected with intake and backwater mouth is separate with the system pipeline 8 making Secondary Air heater 2 be connected with intake and backwater mouth, but both share same intake and backwater mouth.Now, system inlet valve 6, one system outlet valve 7, dewatering outlet, a pressurization cycle pump 5 and First air heater water side modulating valve 3 can be provided with at the system pipeline 8 making First air heater 1 be connected with intake and backwater mouth, and another system inlet valve 6, another system outlet valve 7, another dewatering outlet, another pressurization cycle pump 5 and Secondary Air heater water side modulating valve 4 can be provided with on the system pipeline 8 making Secondary Air heater 2 be connected with intake and backwater mouth.Again such as: in another embodiment of the present invention, although the First air heater 1 of indirect air cooling unit waste heat recovering device of the present invention and Secondary Air heater 2 are also be parallel between intake and backwater mouth respectively by different system pipelines 8, namely in indirect air cooling unit waste heat recovering device of the present invention, the system pipeline 8 that First air heater 1 is connected with intake and backwater mouth is separate with the system pipeline 8 making Secondary Air heater 2 be connected with intake and backwater mouth, but both are connected with the recirculating cooling water system of backwater mouth with indirect air cooling unit respectively by different intakes, namely on the surface condenser 10 of recirculating cooling water system connecting indirect air cooling unit and the pipeline of Air-Cooling Island 11, two intakes and two backwater mouths are provided with.Now, also system inlet valve 6, system outlet valve 7, dewatering outlet, a pressurization cycle pump 5 and First air heater water side modulating valve 3 be can be provided with at the system pipeline 8 making First air heater 1 be connected with intake and backwater mouth, and on the system pipeline 8 making Secondary Air heater 2 be connected with intake and backwater mouth, another system inlet valve 6, another system outlet valve 7, another dewatering outlet, another pressurization cycle pump 5 and Secondary Air heater water side modulating valve 4 also can be provided with.
Thermal technology's measuring point of indirect air cooling unit waste heat recovering device of the present invention, as: thermal resistor, pressure transmitter, differential pressure transmitter, flowmeter, humidity detector etc., comprise the DCS of all accessible generator set of supporting regulating equipment, realize Automated condtrol.
The invention relates to a kind of indirect air cooling unit waste heat recovering device, that the air cooling circulating water of the closed-type circulating cooling water system utilizing indirect air cooling generator set is as thermal source, by First air and the Secondary Air of heater heating boiler, and be provided separately First air heater and Secondary Air heater in First air air channel and Secondary Air air channel.Wherein the heat-exchanging element of heater can adopt fin tube or the light pipe of spiral fin coil, H type extended surface tube, steel-aluminum composite fin tube, other form, and air cooling circulating water is at Bottomhole pressure, and First air and Secondary Air, in the outer flowing of pipe, realize heat exchange.Indirect air cooling unit waste heat recovering device of the present invention operates steadily, safety, environmental protection, there is good energy-saving effect.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, when the method and technology contents that can utilize above-mentioned announcement are made a little change or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (9)
1. an indirect air cooling unit waste heat recovering device, is characterized in that it comprises: First air heater (1), Secondary Air heater (2) and system pipeline (8); Wherein, described First air heater (1) is arranged in First air air channel; Described Secondary Air heater (2) is arranged in Secondary Air air channel; The surface condenser (10) of recirculating cooling water system connecting described indirect air cooling unit and the pipeline of Air-Cooling Island (11) are provided with intake and backwater mouth; Wherein, described intake is arranged on the pipeline at air cooling circulating water outlet place of described surface condenser (10); Described backwater mouth is arranged on the pipeline between the air cooling circulating water outlet of described surface condenser (10) and the air cooling circulating water entrance of described Air-Cooling Island (11), and between the air cooling circulating water entrance being positioned at described intake and described Air-Cooling Island (11), or be arranged on the pipeline between the air cooling circulating water outlet of described Air-Cooling Island (11) and the air cooling circulating water entrance of described surface condenser (10); Described First air heater (1) and described Secondary Air heater (2) are parallel between described intake and described backwater mouth by described system pipeline (8).
2. indirect air cooling unit waste heat recovering device according to claim 1, is characterized in that the described system pipeline (8) that is wherein connected with described First air heater (1) and described Secondary Air heater (2) at described intake is provided with system inlet valve (6); The described system pipeline (8) that described backwater mouth is connected with described First air heater (1) and described Secondary Air heater (2) is provided with system outlet valve (7), described system pipeline (8) between described system outlet valve (7) and described First air heater (1) and described Secondary Air heater (2) is also provided with dewatering outlet, is provided with discharging valve (9) at described dewatering outlet place.
3. indirect air cooling unit waste heat recovering device according to claim 2, it is characterized in that wherein said First air heater (1) and described Secondary Air heater (2) are being connected to same described system inlet valve (6) by described system pipeline (8) its one end rear in parallel by same described system pipeline (8), described intake is connected to again by described system inlet valve (6), its the other end is connected to same described system outlet valve (7) by same described system pipeline (8), then is connected to described backwater mouth by described system outlet valve (7); Described dewatering outlet is one, be arranged at and make on described system pipeline (8) that described First air heater (1) is in parallel with described Secondary Air heater (2), or be arranged at described First air heater (1) in parallel with described Secondary Air heater (2) after on the described system pipeline (8) that is connected with described system outlet valve (7).
4. indirect air cooling unit waste heat recovering device according to claim 3, it is characterized in that wherein making in the described system pipeline (8) that described First air heater (1) is in parallel with described Secondary Air heater (2), the described system pipeline (8) be connected with the water intake of described First air heater (1) is provided with First air heater water side modulating valve (3), the described system pipeline (8) be connected with the water intake of described Secondary Air heater (2) is provided with Secondary Air heater water side modulating valve (4).
5. the indirect air cooling unit waste heat recovering device according to claim 3 or 4, is characterized in that wherein on described First air heater (1) and described Secondary Air heater (2) the rear described system pipeline (8) be connected with described system inlet valve (6) in parallel, being provided with pressurization cycle pump (5).
6. indirect air cooling unit waste heat recovering device according to claim 1 and 2, is characterized in that the described system pipeline (8) that is wherein connected with described First air heater (1) at described intake is provided with First air heater water side modulating valve (3); The described system pipeline (8) that described intake is connected with described Secondary Air heater (2) is provided with Secondary Air heater water side modulating valve (4).
7. indirect air cooling unit waste heat recovering device according to claim 6, is characterized in that the described system pipeline (8) that is wherein connected with described First air heater (1) and described Secondary Air heater (2) at described intake is provided with pressurization cycle pump (5).
8. indirect air cooling unit waste heat recovering device according to claim 1 and 2, is characterized in that the described system pipeline (8) that is wherein connected with described First air heater (1) and described Secondary Air heater (2) at described intake is provided with pressurization cycle pump (5).
9. indirect air cooling unit waste heat recovering device according to claim 1, is characterized in that the heating surface of wherein said First air heater (1) and described Secondary Air heater (2) adopts fin tube or the light pipe of spiral fin coil, H type extended surface tube, steel-aluminum composite fin tube, other form.
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| CN201310576830.4A CN104653241B (en) | 2013-11-18 | 2013-11-18 | A kind of indirect air cooling unit waste-heat recovery device |
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| CN201310576830.4A CN104653241B (en) | 2013-11-18 | 2013-11-18 | A kind of indirect air cooling unit waste-heat recovery device |
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| CN104653241B CN104653241B (en) | 2016-08-17 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105626171A (en) * | 2016-03-28 | 2016-06-01 | 西安热工研究院有限公司 | Waste heat utilization system for indirect air-cooling unit |
| CN106224023A (en) * | 2016-07-26 | 2016-12-14 | 西安交通大学 | A kind of combined cycle indirect air cooling system |
| CN106767119A (en) * | 2016-11-24 | 2017-05-31 | 中国能源建设集团广东省电力设计研究院有限公司 | Indirect air cooling system and its control method with residual neat recovering system |
| WO2018045708A1 (en) * | 2016-09-06 | 2018-03-15 | 大唐环境产业集团股份有限公司 | Indirect air-cooling unit heat recovery and water treatment device and method |
| CN110986077A (en) * | 2019-12-26 | 2020-04-10 | 润电能源科学技术有限公司 | Coal-fired unit heat utilizes system |
| CN112648030A (en) * | 2021-01-06 | 2021-04-13 | 武瑞香 | Circulating water energy-saving utilization device of thermal power plant |
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| CN105626171A (en) * | 2016-03-28 | 2016-06-01 | 西安热工研究院有限公司 | Waste heat utilization system for indirect air-cooling unit |
| CN106224023A (en) * | 2016-07-26 | 2016-12-14 | 西安交通大学 | A kind of combined cycle indirect air cooling system |
| CN106224023B (en) * | 2016-07-26 | 2019-02-05 | 西安交通大学 | A kind of combined cycle indirect air cooling system |
| WO2018045708A1 (en) * | 2016-09-06 | 2018-03-15 | 大唐环境产业集团股份有限公司 | Indirect air-cooling unit heat recovery and water treatment device and method |
| CN106767119A (en) * | 2016-11-24 | 2017-05-31 | 中国能源建设集团广东省电力设计研究院有限公司 | Indirect air cooling system and its control method with residual neat recovering system |
| CN106767119B (en) * | 2016-11-24 | 2018-10-19 | 中国能源建设集团广东省电力设计研究院有限公司 | Indirect air cooling system with residual neat recovering system and its control method |
| CN110986077A (en) * | 2019-12-26 | 2020-04-10 | 润电能源科学技术有限公司 | Coal-fired unit heat utilizes system |
| CN112648030A (en) * | 2021-01-06 | 2021-04-13 | 武瑞香 | Circulating water energy-saving utilization device of thermal power plant |
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