CN103471421B - Device for recovering waste heat of high-temperature flue and exhaust heat recovering method thereof - Google Patents
Device for recovering waste heat of high-temperature flue and exhaust heat recovering method thereof Download PDFInfo
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- CN103471421B CN103471421B CN201310383207.7A CN201310383207A CN103471421B CN 103471421 B CN103471421 B CN 103471421B CN 201310383207 A CN201310383207 A CN 201310383207A CN 103471421 B CN103471421 B CN 103471421B
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Abstract
The invention provides a kind of device for recovering waste heat of high-temperature flue and exhaust heat recovering method thereof.The inventive system comprises water cooling tower and kerve, kerve top is connected and installed with the smoke discharge tube road of demister.Device of the present invention, independent of outside generator, does not affect the normal work of generator, and compact conformation, easy for installation, easy maintenance.Method of the present invention can absorb the flue gas of nearly 500 DEG C in generator chimney, adapts to the wide variation of flue-gas temperature and calorific value, and effectively reclaim the latent heat of steam in flue gas and low-temperature heat quantity, fume afterheat utilization rate is high.
Description
Technical field
What the present invention relates to is the device and method of flue gas waste heat recovery, be applicable to anaerobic organism fermentation the recycling of the product biogas biogas generator fume afterheat that is fuel, be also applicable to the recycling of the generator flue gas that is fuel such as natural gas, diesel oil.
Background technology
The fuel that existing generator is conventional has biogas, natural gas, shale gas and diesel oil etc., no matter use any fuel, the thermal losses caused of discharging fume all accounts for more than 50% of fuel gross calorific value.
What now more common flue gas waste heat recovery adopted is heat exchanger components directly and flue gas carry out heat exchange, different temperatures scope has different heat exchanger components, and its main material has: 1) metal material; 2) glass, graphite combined material or tetrafluoro, enamel composition material.In view of the impact of serviceability temperature and corrosion, the use of often kind of parts has limitation.If carry out waste heat recovery in the environment of, seriously corroded comparatively large in variations in temperature, then employing two kinds and above heat exchanger components is needed to combinationally use, heat exchange of progressively lowering the temperature.
Due to the change of generating set thermic load and environment temperature, the flue-gas temperature making it discharge and calorific value amplitude of variation very large, traditional waste-heat recovery device heat exchanger components is fixing, heat exchange power is also certain, therefore be difficult to ensure that before and after waste heat recovery, flue-gas temperature remains on more than dew point always under changing circumstances, even if accomplish also to need to pay larger cost, so traditional waste-heat recovery device and method also exist inefficiency, life-span short shortcoming.
Tradition flue gas waste heat recovery apparatus there is fouling and ash content deposits and the problem of thermal efficiency decline, therefore need design ash disposal apparatus for eliminating sludge.
Tradition flue gas waste heat recovery apparatus and method, its flue gas air outlet temperature is more than 120 DEG C, and its latent heat is utilized, if the latent heat of flue gas need be recycled, then need to increase Latent heat recycle device again, make its exhaust gas temperature at about 50 DEG C, by increase investment and occupation of land in commercial Application.
Summary of the invention
The technical problem of first aspect to be solved by this invention is the problem of the inefficiency of the waste-heat recovery device overcoming prior art, provides a kind of device for recovering waste heat of high-temperature flue.
The technical problem of second aspect to be solved by this invention is to provide the method for above-mentioned device for recovering waste heat of high-temperature flue waste heat recovery.
In order to solve the technical problem of above-mentioned first aspect, technical scheme provided by the invention is: a kind of device for recovering waste heat of high-temperature flue, comprising:
Water cooling tower, tower top is provided with the first shower nozzle, is provided with heat exchanger below the first shower nozzle;
Kerve, the bottom of water cooling tower connects the kerve of an acidproof material, and kerve top connects smoke discharge tube road, and road is provided with demister to smoke discharge tube.
First sprinkler of the tower top of water cooling tower goes out medium, directly and smoke contacts, medium carburation by evaporation, the sensible heat latent heat be converted in steam medium of high-temperature flue gas completes heat conversion, then medium and flue gas enter heat exchanger jointly, carry out heat exchange, the steam in flue gas and the medium condensation in heat exchanger be vaporized with band heat medium, release latent heat
Medium after heat exchange and flue gas enter kerve from heat exchanger lower end, and carry out gas-liquid separation at kerve (acidproof material), gas enters chimney.
Preferably, kerve top is also provided with the second shower nozzle.
Preferably, kerve connects a spray pump, medium is transported to the first shower nozzle and the second shower nozzle by described spray pump connecting pipe respectively, and the pipeline between spray pump and the second shower nozzle is provided with the second valve, and the pipeline between spray pump and the first shower nozzle is provided with the first motor-driven valve.
A liquid part enters in water cooling tower carries out exchange heat again, and another part is as flue gas washing liquid.Kerve liquid regularly carries out supplementing, changing.
In order to solve the technical problem of above-mentioned second aspect, technical scheme provided by the invention is: the exhaust heat recovering method of device for recovering waste heat of high-temperature flue, comprises the steps:
(1) drawn by the flue gas in generator chimney and enter water cooling tower, in tower, first medium is directly and smoke contacts, and first medium carburation by evaporation absorbs heat,
(2) then, the steam in flue gas and the first medium be vaporized enter heat exchanger jointly, in heat exchanger, carry out heat exchange with second medium to be heated,
(3) first medium after heat exchange and flue gas enter kerve from heat exchanger lower end, and carry out gas-liquid separation at kerve, gas enters chimney and discharges after demist.
Preferably, in described step (1), the tower top of water cooling tower establishes the first shower nozzle, and spray first medium directly and smoke contacts generation heat exchange.
Preferably, in described step (2), second medium reaches predetermined heating-up temperature after heat exchange, and this temperature can pass through flow-control, finally discharges heat exchanger.
Preferably, in described step (3), the second shower nozzle is established at kerve top, and first medium is undertaken repeating spray by the spray pump that kerve connects, and discharges after condensed water removed by the demister of cooled low-temperature flue gas through kerve top.
Preferably, kerve connects a spray pump, and medium is transported to the first shower nozzle and the second shower nozzle by spray pump respectively, and is provided with the second valve between spray pump and the second shower nozzle, is provided with the first motor-driven valve between spray pump and the first shower nozzle; The unlatching of the first motor-driven valve regulates open degree according to the temperature of low-temperature flue gas, can regulate by manually opened second valve.
Preferably, kerve connect spray pump and flue gas main pipeline on main motor-driven valve link, spray pump quits work, and main motor-driven valve is opened automatically, and high-temperature flue gas directly discharges.
Preferably, described first medium is water; Second medium is water or oil.
Relative to the scheme of prior art, the advantage of device for recovering waste heat of high-temperature flue of the present invention is:
(1) device of the present invention is independent of outside generator, and do not affect the normal work of generator, apparatus structure is compact, occupation of land is few, adopts the glissandoes such as high temperature is flexible coupling, safe and reliable, easy for installation, easy maintenance.
(2) method of the present invention can absorb the flue gas of nearly 500 DEG C in generator chimney, adapts to the wide variation of flue-gas temperature and calorific value, effectively reclaims the latent heat of steam in flue gas and low-temperature heat quantity; Low-temperature heat quantity below energy recovered flue gas dew point and the latent heat of steam, fume afterheat utilization rate is high.
(3) exhaust-heat absorption method of the present invention can regulate automatically for low-temperature flue gas temperature, heating medium temperature, and plant running operating mode flexible operation, the scope of application is large.
(4) device of the present invention can regularly replace spray liquid, adds the service life of device.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the structural representation that the present invention specifically implements the reaction tower using the protection of band air curtain.
Wherein: 1 is spray pump, 2 is the second valve, and 3 is the 3rd valve, 4 is the first motor-driven valve, and 5 is heat-resisting soft connection, and 6 is main motor-driven valve, 7 is Venturi tube, and 8 for being flexible coupling, and 9 is the first shower nozzle, 10 is heat exchanger, and 11 is water cooling tower, and 12 is the second shower nozzle, 13 is demister, 14 is the 3rd valve, and 15 is the 4th valve, and 16 is kerve.
Detailed description of the invention
Below in conjunction with specific embodiment, such scheme is described further.Should be understood that these embodiments are not limited to for illustration of the present invention limit the scope of the invention.The implementation condition adopted in embodiment can do further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in normal experiment.
A kind of device for recovering waste heat of high-temperature flue as shown in Figure 1, comprising: water cooling tower 11, and tower top is provided with below the first shower nozzle 9, first shower nozzle 9 and is provided with heat exchanger 10; The bottom of water cooling tower 11 connects the kerve 16 of an acidproof material, kerve 16 top is provided with the second shower nozzle 12, kerve 16 top connects smoke discharge tube road, smoke discharge tube road is provided with demister 13, kerve also connects a spray pump 1, medium is transported to the first shower nozzle 9 and the second shower nozzle 12 by described spray pump 1 connecting pipe respectively, and the pipeline between spray pump 1 and the second shower nozzle 12 is provided with the second valve 2, and the pipeline between spray pump 1 and the first shower nozzle 9 is provided with the first motor-driven valve 4.
In a preferred embodiment of the present invention, generator high-temperature flue gas pipeline is connected to device for recovering waste heat of high-temperature flue by a heat-resisting soft connection 5 and Venturi tube 7.
Form negative pressure under the high flow rate effect that Venturi tube 7 produces at spray pump 1 ejecting liquid, generator high-temperature flue gas is formed air-water mixture with liquid, additional issue makes the heat of high temperature in flue gas be converted into the latent heat of steam rapidly.Enter in waste heat recovery tower 11 through shower nozzle, condensation release heat, carry out exchange heat with heat exchanger, second medium to be heated reaches predetermined heating-up temperature (passing through flow-control) and discharges heat exchanger afterwards after heat exchange.
Embodiment 1
The exhaust heat recovering method of device for recovering waste heat of high-temperature flue, comprises the steps:
(1) drawn by the flue gas in generator chimney and enter water cooling tower 11, tower top establishes the first shower nozzle 9, and in tower, first medium is directly and smoke contacts generation heat exchange,
(2) then, steam in flue gas and the first medium be vaporized enter heat exchanger 10 jointly, heat exchange is carried out with second medium to be heated in heat exchanger, second medium reaches predetermined heating-up temperature after heat exchange, this temperature can pass through flow-control, finally discharge heat exchanger 10
(3) first medium after heat exchange and flue gas enter kerve from heat exchanger lower end, gas-liquid separation is carried out at kerve, the second shower nozzle is established at kerve top, first medium is undertaken repeating spray by the spray pump that kerve connects, and discharges after condensed water removed by the demister of cooled low-temperature flue gas through kerve top.
In a preferred embodiment of the present invention, kerve connects a spray pump 1, medium is transported to the first shower nozzle 9 and the second shower nozzle 12 by spray pump respectively, and is provided with the second valve 2 between spray pump 1 and the second shower nozzle 12, between spray pump 1 and the first shower nozzle 9, be provided with the first motor-driven valve 4; The unlatching of the first motor-driven valve 4 regulates open degree according to the temperature of low-temperature flue gas, can regulate by manually opened second valve 2, the spray pump 1 that kerve 16 connects links with main motor-driven valve 6 on flue gas main pipeline, spray pump 1 quits work, main motor-driven valve 6 is opened automatically, high-temperature flue gas directly discharges, and first medium is water; Second medium is water or oil.
More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not by the restriction of above-mentioned example; what describe in above-mentioned example and description just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (4)
1. the exhaust heat recovering method of device for recovering waste heat of high-temperature flue, is characterized in that, comprises the steps:
(1) flue gas in generator chimney is entered water cooling tower by a heat-resisting soft connection and Venturi tube extraction, the tower top of described water cooling tower is provided with the first shower nozzle, heat exchanger is provided with below first shower nozzle, in tower, first medium directly and smoke contacts, first medium carburation by evaporation absorbs heat, and the first shower nozzle spray first medium directly and smoke contacts generation heat exchange;
(2) then, steam in flue gas and the first medium be vaporized enter heat exchanger jointly, and in heat exchanger, carry out heat exchange with second medium to be heated, second medium reaches predetermined heating-up temperature after heat exchange, this temperature can pass through flow-control, finally discharges heat exchanger;
(3) first medium after heat exchange and flue gas enter kerve from heat exchanger lower end, and carry out gas-liquid separation at kerve, gas enters chimney and discharges after demist,
The second shower nozzle is established at kerve top, and first medium is undertaken repeating spray by the spray pump that kerve connects, and discharges after condensed water removed by the demister of cooled low-temperature flue gas through kerve top.
2. exhaust heat recovering method according to claim 1, it is characterized in that, kerve connects a spray pump, first medium is transported to the first shower nozzle and the second shower nozzle by spray pump respectively, and the second valve is provided with between spray pump and the second shower nozzle, between spray pump and the first shower nozzle, be provided with the first motor-driven valve; The unlatching of the first motor-driven valve regulates open degree according to the temperature of low-temperature flue gas, can regulate by manually opened second valve.
3. exhaust heat recovering method according to claim 1, is characterized in that, kerve connect spray pump and flue gas main pipeline on main motor-driven valve link, spray pump quits work, and main motor-driven valve is opened automatically, and high-temperature flue gas directly discharges.
4. exhaust heat recovering method according to claim 1, is characterized in that, described first medium is water; Second medium is water or oil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310383207.7A CN103471421B (en) | 2013-08-29 | 2013-08-29 | Device for recovering waste heat of high-temperature flue and exhaust heat recovering method thereof |
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| CN201310383207.7A CN103471421B (en) | 2013-08-29 | 2013-08-29 | Device for recovering waste heat of high-temperature flue and exhaust heat recovering method thereof |
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| CN103471421A CN103471421A (en) | 2013-12-25 |
| CN103471421B true CN103471421B (en) | 2015-08-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104343478B (en) * | 2014-10-22 | 2016-05-04 | 烟台荏原空调设备有限公司 | The double-work medium cycle generating system of used heat in a kind of recovered flue gas |
| CN105433422B (en) * | 2015-12-11 | 2017-10-27 | 航天凯天环保科技股份有限公司 | Flue-cured tobacco humidity discharging heat reclamation device and recovery method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563874A (en) * | 2004-04-16 | 2005-01-12 | 杨振东 | Fume afterheat recovering system by hidden heat process |
| CN202158689U (en) * | 2011-07-06 | 2012-03-07 | 北京荣星时代机电科技发展有限公司 | Comprehensive recycling system for flue gas waste heat and condensing waste heat of thermal power plant |
| CN102589306A (en) * | 2012-03-02 | 2012-07-18 | 华电重工股份有限公司 | Device for recovering waste heat of exhaust smoke in industrial heat treatment |
| CN103017140A (en) * | 2012-12-25 | 2013-04-03 | 浙江工商大学 | Flue gas waste heat recovery device of biomass power plant |
| CN203479061U (en) * | 2013-08-29 | 2014-03-12 | 苏州科特环保设备有限公司 | Waste-heat recovery device of high-temperature flue gas |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012102626A (en) * | 2010-11-08 | 2012-05-31 | Fuji Electric Co Ltd | Generator system |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563874A (en) * | 2004-04-16 | 2005-01-12 | 杨振东 | Fume afterheat recovering system by hidden heat process |
| CN202158689U (en) * | 2011-07-06 | 2012-03-07 | 北京荣星时代机电科技发展有限公司 | Comprehensive recycling system for flue gas waste heat and condensing waste heat of thermal power plant |
| CN102589306A (en) * | 2012-03-02 | 2012-07-18 | 华电重工股份有限公司 | Device for recovering waste heat of exhaust smoke in industrial heat treatment |
| CN103017140A (en) * | 2012-12-25 | 2013-04-03 | 浙江工商大学 | Flue gas waste heat recovery device of biomass power plant |
| CN203479061U (en) * | 2013-08-29 | 2014-03-12 | 苏州科特环保设备有限公司 | Waste-heat recovery device of high-temperature flue gas |
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Address after: 215156 Jiangsu city of Suzhou province Wuzhong District Xu Kou Zhen Mao Peng Lu, No. 517 Patentee after: Suzhou Kete Environmental Protection Co., Ltd. Address before: 215156 Jiangsu city of Suzhou province Wuzhong District Xu Kou Zhen Mao Peng Lu, No. 517 Patentee before: Suzhou Kete Environmental Protection Equipment Co.,Ltd. |