CN104006399A - Organic rankine cycle based boiler energy saving system - Google Patents
Organic rankine cycle based boiler energy saving system Download PDFInfo
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- CN104006399A CN104006399A CN201410239018.7A CN201410239018A CN104006399A CN 104006399 A CN104006399 A CN 104006399A CN 201410239018 A CN201410239018 A CN 201410239018A CN 104006399 A CN104006399 A CN 104006399A
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Abstract
An organic rankine cycle based boiler energy saving system is provided with an organic rankine cycle system which is connected with a boiler smoke discharging pipeline and a water replenishing pipe; the organic rankine cycle system comprises an evaporator, an expansion machine, a condenser and a working medium pump which are sequentially in series connection through an organic working medium pipeline; an organic working medium output end of the working medium pump is connected with an organic working medium input end of the evaporator; an input end of a heat exchange air pipe which is for heat exchange with organic working mediums inside the evaporator is connected with a smoke outlet end of the smoke discharging pipeline; an output end of the heat exchange pipe is connected with a discharging pipe of air which is performed heat exchange; an input end of a heat exchange water pipe which is for heat exchange with the organic working mediums inside the condenser is connected with a water supplying end through a water supplying pipe; an output end of the heat exchange water pipe is connected with a water inlet end of the water replenishing pipe of the boiler; a power output end of the expansion machine is connected with a power consumption device. According to the organic rankine cycle based boiler energy saving system, waste heat is fully utilized, electric power is provided for energy consumption components such as a water pump meanwhile replenished water of the boiler is heated, and redundant electric energy can be output to the exterior.
Description
Technical field
The present invention relates to a kind of boiler energy-saving system.Particularly relate to a kind of boiler energy-saving system based on organic Rankine circulation.
Background technology
In China, boiler is important power conversion and utilizes equipment, consumed a large amount of primary energy.Meanwhile, nearly all there is efficiency of combustion and the low problem of the thermal efficiency in all types of boilers, has wasted mass energy.Wherein, flue gas loss is a loss of boiler thermal output maximum, and a large amount of heat energy is along with fume emission is in atmosphere and slattern.For a long time, although boiler has been carried out to multiple transformation, reduce exhaust gas temperature, improve energy utilization rate, its exhaust gas temperature higher than 200 DEG C, still has a lot of heats to be discharged in environment toward contact.
Summary of the invention
Technical problem to be solved by this invention is, the one contained heat energy of can recovery boiler discharging fume is provided, and is translated into according to demand power or electric energy, and reduces exhaust gas temperature, improves the boiler energy-saving system based on organic Rankine circulation of boiler energy utilization rate.
The technical solution adopted in the present invention is: a kind of boiler energy-saving system based on organic Rankine circulation, comprise boiler, also be provided be respectively connected with filling pipe with the smoke discharging pipe of described boiler for the recovery boiler contained heat energy of discharging fume, improve the organic rankine cycle system of boiler energy utilization rate.
Described organic rankine cycle system includes the evaporimeter being connected in series successively by organic working medium pipeline, decompressor, condenser and working medium pump, the organic working medium output of described working medium pump connects the organic working medium input of evaporimeter, wherein, the input for carrying out the heat exchange tracheae of heat exchange with described organic working medium in described evaporimeter is connected the outlet flue end of described smoke discharging pipe, the output of described heat-exchange tube connects the gas outlet pipe after heat exchange, the input for carrying out the heat exchange water pipe of heat exchange with described organic working medium in described condenser is connected for water end (W.E.) by feed pipe, the output of described heat exchange water pipe connects the water inlet end of the filling pipe of described boiler, the clutch end of described decompressor connects wasted work equipment.
On described smoke discharging pipe and gas outlet pipe, be also serially connected with respectively flue gas processing device.
Described flue gas processing device is desulfurizer or dust arrester.
On described filling pipe and feed pipe, be also serially connected with respectively water treatment facilities.
Described water treatment facilities is water filtering device or deaerating plant.
Described wasted work equipment is generator or water pump or working medium pump.
Boiler energy-saving system based on organic Rankine circulation of the present invention, has following beneficial effect:
1, by using organic rankine cycle system, reclaim residual heat from boiler fume, heated boiler replenishing water simultaneously, reduced boiler to extraneous heat extraction, improved efficiency of energy utilization;
2, compare with residual heat from boiler fume recovery system in the past, native system has utilized waste heat more fully, in having heated boiler replenishing water, can provide electric power for power consumption parts such as water pumps, and unnecessary electric energy can be exported to the external world;
3, compare with the organic Rankine system of recovery boiler fume afterheat in the past, the effect of economizer has been played in condenser heat release heating boiler moisturizing for native system simultaneously, has reduced boiler load, has greatly improved efficiency of energy utilization.
Brief description of the drawings
Fig. 1 is the overall structure schematic diagram that the present invention is based on the boiler energy-saving system of organic Rankine circulation.
In figure
1: evaporimeter 2: decompressor
3: condenser 4: working medium pump
5: boiler 6: smoke discharging pipe
7: filling pipe 8: organic working medium pipeline
9: heat exchange tracheae 10: gas outlet pipe
11: heat exchange water pipe 12: feed pipe
G: generator
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the boiler energy-saving system based on organic Rankine circulation of the present invention is described in detail.
Boiler energy-saving system based on organic Rankine circulation of the present invention, adopts organic Rankine circulating technology recovery boiler fume afterheat, and heating boiler moisturizing simultaneously.
As shown in Figure 1, boiler energy-saving system based on organic Rankine circulation of the present invention, comprise boiler 5, and be connected with filling pipe 7 with the smoke discharging pipe 6 of described boiler 5 respectively for the recovery boiler contained heat energy of discharging fume, improve the organic rankine cycle system of boiler 5 energy utilization rates.
Described organic rankine cycle system includes the evaporimeter 1 being connected in series successively by organic working medium pipeline 8, decompressor 2, condenser 3 and working medium pump 4, the organic working medium output of described working medium pump 4 connects the organic working medium input of evaporimeter 1, wherein, the input for carrying out the heat exchange tracheae 9 of heat exchange with described organic working medium in described evaporimeter 1 is connected the outlet flue end of described smoke discharging pipe 6, the output of described heat exchange tracheae 9 connects the gas outlet pipe 10 after heat exchange, the input for carrying out the heat exchange water pipe 11 of heat exchange with described organic working medium in described condenser 3 is connected for water end (W.E.) by feed pipe 12, the output of described heat exchange water pipe 11 connects the water inlet end of the filling pipe 7 of described boiler 5, the clutch end of described decompressor 2 connects wasted work equipment G, described wasted work equipment G can be generator or water pump or working medium pump etc.
Boiler energy-saving system based on organic Rankine circulation of the present invention, connects evaporimeter 1, decompressor 2, condenser 3 and working medium pump 4 successively by machine working medium pipeline 8, composition organic rankine cycle system.The smoke evacuation of boiler 5 is introduced to evaporimeter 1, with organic working medium heat exchange, make organic working medium be subject to thermal evaporation.Feed pipe to boiler water supply 12 is first passed into condenser 3, then enter boiler 5 by filling pipe 7.Use boiler replenishing water condensation organic working medium, make boiler replenishing water temperature raise simultaneously, play pre-heat effect.Organic working medium expands to do work and drives decompressor 2, produces power and drives generator 8 to generate electricity.
Boiler energy-saving system based on organic Rankine circulation of the present invention, can be used for all kinds of boilers.Decompressor 2 in system can be selected the expansion motive power machine of adequate types, specification as required.Meanwhile, on described smoke discharging pipe 6 and gas outlet pipe 10, can, according to requirement of engineering, be serially connected with respectively flue gas processing device, described flue gas processing device can be desulfurizer or dust arrester etc.On described filling pipe 7 and feed pipe 12, can, according to requirement of engineering, also can be serially connected with respectively water treatment facilities, described water treatment facilities can be the water treatment facilities such as water filtering device or deaerating plant.
Claims (7)
1. the boiler energy-saving system based on organic Rankine circulation, comprise boiler (5), it is characterized in that, also be provided be respectively connected with filling pipe (7) with the smoke discharging pipe (6) of described boiler (5) for the recovery boiler contained heat energy of discharging fume, improve the organic rankine cycle system of boiler (5) energy utilization rate.
2. the boiler energy-saving system based on organic Rankine circulation according to claim 1, it is characterized in that, described organic rankine cycle system includes the evaporimeter (1) being connected in series successively by organic working medium pipeline (8), decompressor (2), condenser (3) and working medium pump (4), the organic working medium output of described working medium pump (4) connects the organic working medium input of evaporimeter (1), wherein, the input for carrying out the heat exchange tracheae (9) of heat exchange with described organic working medium in described evaporimeter (1) is connected the outlet flue end of described smoke discharging pipe (6), the output of described heat-exchange tube (9) connects the gas outlet pipe (10) after heat exchange, the input for carrying out the heat exchange water pipe (11) of heat exchange with described organic working medium in described condenser (3) is connected confession water end (W.E.) by feed pipe (12), the output of described heat exchange water pipe (11) connects the water inlet end of the filling pipe (7) of described boiler (5), the clutch end of described decompressor (2) connects wasted work equipment (G).
3. the boiler energy-saving system based on organic Rankine circulation according to claim 2, is characterized in that, described wasted work equipment (G) is generator or water pump or working medium pump.
4. the boiler energy-saving system based on organic Rankine circulation according to claim 2, is characterized in that, on described smoke discharging pipe (6) and gas outlet pipe (10), is also serially connected with respectively flue gas processing device.
5. the boiler energy-saving system based on organic Rankine circulation according to claim 4, is characterized in that, described flue gas processing device is desulfurizer or dust arrester.
6. the boiler energy-saving system based on organic Rankine circulation according to claim 2, is characterized in that, on described filling pipe (7) and feed pipe (12), is also serially connected with respectively water treatment facilities.
7. the boiler energy-saving system based on organic Rankine circulation according to claim 6, is characterized in that, described water treatment facilities is water filtering device or deaerating plant.
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| CN201410239018.7A CN104006399A (en) | 2014-05-30 | 2014-05-30 | Organic rankine cycle based boiler energy saving system |
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| CN201410239018.7A CN104006399A (en) | 2014-05-30 | 2014-05-30 | Organic rankine cycle based boiler energy saving system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107683390A (en) * | 2015-03-31 | 2018-02-09 | 三菱日立电力系统株式会社 | Boiler, the steam for possessing the boiler produce equipment and the method for operation of boiler |
| CN109631602A (en) * | 2018-12-28 | 2019-04-16 | 山东金艺珠宝有限公司 | A kind of noble metal processing waste-heat recovery device and technique |
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| CN202692102U (en) * | 2012-05-15 | 2013-01-23 | 宁波和谐环保节能科技有限公司 | Flue gas waste heat recovery system of natural gas boiler |
| CN203880731U (en) * | 2014-05-30 | 2014-10-15 | 天津大学 | Boiler energy saving system based on organic rankine cycle |
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| CN201827875U (en) * | 2010-06-07 | 2011-05-11 | 洛阳蓝海实业有限公司 | Low-temperature flue gas waste heat recovery device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107683390A (en) * | 2015-03-31 | 2018-02-09 | 三菱日立电力系统株式会社 | Boiler, the steam for possessing the boiler produce equipment and the method for operation of boiler |
| US10844753B2 (en) | 2015-03-31 | 2020-11-24 | Mitsubishi Hitachi Power Systems, Ltd. | Boiler, steam-generating plant provided with same, and method for operating boiler |
| CN109631602A (en) * | 2018-12-28 | 2019-04-16 | 山东金艺珠宝有限公司 | A kind of noble metal processing waste-heat recovery device and technique |
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Application publication date: 20140827 |