CN100406812C - Afterheat recovery apparatus of heat source furnace - Google Patents

Afterheat recovery apparatus of heat source furnace Download PDF

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Publication number
CN100406812C
CN100406812C CN2005100665966A CN200510066596A CN100406812C CN 100406812 C CN100406812 C CN 100406812C CN 2005100665966 A CN2005100665966 A CN 2005100665966A CN 200510066596 A CN200510066596 A CN 200510066596A CN 100406812 C CN100406812 C CN 100406812C
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China
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water
heat recovery
hot water
steam
waste heat
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Expired - Fee Related
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CN2005100665966A
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CN1696584A (en
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崔栋淳
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H39/00—Devices for locating or stimulating specific reflex points of the body for physical therapy, e.g. acupuncture
    • A61H39/04—Devices for pressing such points, e.g. Shiatsu or Acupressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2203/00—Additional characteristics concerning the patient
    • A61H2203/04—Position of the patient
    • A61H2203/0406—Standing on the feet
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2205/00—Devices for specific parts of the body
    • A61H2205/12—Feet
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]

Abstract

The invention relates to an exhaust heat recovery device of a heat source capable of utilizing exhaust heat of a heat source gas duct to generate vapor to heat water. The exhaust heat recovery device consists of a steam generation means which is maintained in a vacuum state and wherein a water header and a steam header are formed below and above an exhaust heat recovery pipe connected to a gas duct and a closed circuit is formed by connecting the headers by a plurality of heating pipes and water return pipes running through the exhaust heat recovery pipe, a water heating circuit with a heat exchanger built in the steam header, connected with a hot water storing tank through a feed pipe and a return pipe, a condensed water collection plate arranged under the connection part of water return pipes under the heat exchanger of the steam header, a flow rate adjusting valve arranged on the water return pipes. When condensed water returns to the water header via the water return pipes after heating and generating hot water at the heat exchanger by generating steam at the heating pipes with exhaust heat and supplying the steam to the steam header, hot water is generated through regulating the pondage by the flow rate adjusting valve.

Description

The waste heat recovery plant of heat source furnace
[technical field]
The present invention relates to the waste heat recovery plant of thermal source, specifically, relate to the used heat that utilizes the thermal source flue to discharge and produce steam, and generate the waste heat recovery plant of hot water by described steam.
[background technology]
As everyone knows, the combustion tail gas that thermals source such as boiler, incinerator, smelting furnace are discharged is discharged in the atmosphere with the state that contains a large amount of used heat, therefore causes heat to run off, and is very uneconomical, thus making great efforts to study used heat utilize problem again.
As the example that Waste Heat Recovery is utilized, No. 220739 publicity of Republic of Korea's utility model patent the waste heat recovery plant of thermal source.This thermal source waste heat recovery plant, in the flue of thermal source, be provided with decomposable heat exchange groove, described heat exchange groove is by urceolus and be arranged on the inner core that described urceolus below forms the used heat passage and form, mineral oil, plant wet goods heat storage medium between urceolus and inner core, have been filled, built-in heat exchanger simultaneously in the top of urceolus, in the front and back of described inner core upper and lower settings a plurality of heat storage medium heating tubes, and on described heat exchange groove, also connected atmosphere opening type expansion tank.
The waste heat recovery plant of above-mentioned thermal source, used heat by the used heat passage when flue is discharged, reclaim used heat by heating inner core and heat storage medium heating tube, the heat storage medium of heating is stored between inner core and the urceolus, heat storage medium by heating heats supply water on the heat exchanger that is arranged on the urceolus the top, and it is stored in the hot water storage tank, be used for necessary purposes, as boiler supplying water, greenhouse with and use for bathing.On the other hand, carry out the heat storage medium that temperature reduces after the heat exchange with the supply water of heat exchanger, because density contrast will be to urceolus below convection current, to carry out heat cycles again.
But for above-mentioned waste heat recovery plant, heat storage medium is heated with liquid condition, and the amount of required heat storage medium is very big, so thermal capacity is also bigger, causes heat time heating time long, and the hot water rise time is also corresponding elongated.Heat storage medium need heat under superatmospheric pressure simultaneously, so the heat exchange groove must be interior laminated structure, thereby manufacturing expense improves.
Moreover, the high-temperature heat accumulation media fluid that is pooled to the urceolus top cools off after carrying out heat exchange with the water that is fed on the warm water heat exchanger, because density contrast forms convection current, drops to the urceolus below, used heat by the used heat passage is reheated, and this convection process carries out repeatedly.On the other hand, because the hot water that is heated by the high-temperature heat accumulation media fluid in the warm water heat exchanger is to be stored in earlier in the hot water storage tank, just intermittently use where necessary, so determine that the capacity of suitable heat exchange groove and hot water storage tank is very difficult, and when the hot water amount ratio is less, the hot water that is stored in the hot water storage tank may seethe with excitement, and the hot water storage tank will have the danger of blast.
For preventing the boiling of above-mentioned hot water, need must be littler than the capacity of hot water storage tank with the capacity setting of heat exchange groove, the heat-releasing device that discharges after-heat perhaps is set in the Waste Heat Recovery pipeline.Preceding a kind of method not only makes Waste Heat Recovery efficient significantly descend, and when the hot water use amount was bigger, the hot water formation efficiency was not high yet.Then a kind of method then has complex structure, other problems such as cost increase.
[summary of the invention]
The waste heat recovery plant that the purpose of this invention is to provide thermal source solves above problem, has improved efficient when shortening heat water generates the time, and can prevent the boiling of hot water storage tank at an easy rate.
Other purpose of the present invention provides the waste heat recovery plant of thermal source, when this device needs to regenerate hot water after interrupting generating hot water, can promptly generate hot water.
For realizing above purpose, the waste heat recovery plant of the thermal source that the present invention relates to, its composition comprises: steam generating device, described steam generating device has water tank and steam chest, described water tank is positioned at the below of the Waste Heat Recovery pipe that is connected to the thermal source flue, and described steam chest is positioned at the top of described Waste Heat Recovery pipe, is provided with a plurality of heating tubes between water tank and steam chest, described heating tube connects described Waste Heat Recovery pipe, and described steam chest and water tank utilize water-circulating pipe to be connected to form the closed-loop path; The hot water heating circuit, it is built-in with heat exchanger in described steam chest, and by supply pipe and recurrent canal the hot water storage tank is connected to heat exchanger; The condensed water collecting board, it is arranged on the below of water-circulating pipe connecting portion of the heat exchanger below of described steam chest, and the both sides of described condensed water collecting board are formed with path; Flow control valve, it is arranged on the described water-circulating pipe.
[description of drawings]
Fig. 1 is the generalized section of the 1st embodiment that the present invention relates to.
Fig. 2 is the section enlarged diagram along the A-A line of Fig. 1.
Fig. 3 is the generalized section of the 2nd embodiment that the present invention relates to.
＜reference numeral explanation 〉
11: flue, 20: steam generating device, 21: the Waste Heat Recovery pipe, 22: water tank,
23: steam chest, 24: heating tube, 25: water-circulating pipe, 30: the hot water heating circuit,
31: heat exchanger, 32: the hot water storage tank, 40: the condensed water collecting board,
50: flow control valve, 60: the condensed water storage tank
[specific embodiment]
Fig. 1 is the generalized section of the 1st embodiment that the present invention relates to, and Fig. 2 is the section enlarged diagram along the A-A line of Fig. 1.Reference numerals 10 is thermals source, the 11st, flue does not have particular restriction to described thermal source 10, as boiler, incinerator, smelting furnace etc. discharge used heat can.
Reference numerals 20 is steam generating devices.Described steam generating device 20 combines decomposable Waste Heat Recovery pipe 21 on described flue 11, and below Waste Heat Recovery pipe 21, form water tank 22, above Waste Heat Recovery pipe 21, form steam chest 23, between described water tank 22 and steam chest 23, be provided with a plurality of heating tubes 24, heating tube 24 connects described Waste Heat Recovery pipe 21, be connected with water-circulating pipe 25 on described water tank 22 and steam chest 23, the inside of this pipe 25 has been injected heat storage mediums such as water and has been kept vacuum state.
Reference numerals 30 is hot water heating circuits.Described hot water heating circuit 30 is built-in heat exchanger 31 in described steam chest 23, links to each other with hot water storage tank 32 with recurrent canal 34 by the supply pipe 33 that is provided with circulating pump 33`, has connected feed pipe 36 and hot water discharge pipe 37 on hot water storage tank 32.The below of the connecting portion of the water-circulating pipe 25 of 23 heat exchanger 31 belows, and formed path 41 in the both sides of this condensed water collecting board 40, the major function of this collecting board 40 is that the steam of collecting by heating tube 24 evaporations supplies to heat exchanger 31 by path 41, carrying out the condensed water that forms after the heat exchange, and it is turned back to water tank 22 by water-circulating pipe 25 with the water that supplies to heat exchanger 31.
When the water level of heat exchanger 31 and hot water storage tank 32 is more or less the same, also described circulating pump 33` can be set, and passes through its Natural Circulation of density official post of hot water.The output signal of the temperature sensor 35 that described circulating pump 33` can will mention by the back is controlled.
Reference numerals 50 is flow control valves.Described flow control valve 50 is arranged on the described water-circulating pipe 25, control by the output signal that is arranged on the temperature sensor 35 on the described hot water storage tank 32, according to the height of the water temperature in the hot water storage tank 32, control is turned back to the flow of the condensed water of water tank 22 by steam chest 23.Described flow control valve 50 can use above-mentioned autocontrol valve, also can use manual operating valve according to the hot water discharge rate in the hot water storage tank 32.
Aforesaid the 1st embodiment of the present invention, when flue 11 is discharged used heat, thermal medium liquid in the water tank 22 rises to heating tube 24 and evaporation, the path 41 that forms by condensed water collecting board 40 both sides supplies to steam chest 23, in hot water storage tank 32, carry out heat exchange with the water that supplies to heat exchanger 31, after the steam condensation, be pooled to condensed water collecting board 40, water to be heated is heated simultaneously, the condensed water that described condensed water collecting board 40 is collected turns back to water tank 22 by water-circulating pipe 25, rise to heating tube 24 afterwards once more, repetition is become the cyclic process of steam by waste heat, water to be heated then repeats the circulation on heat exchanger 31 in the hot water storage tank 32, and generates hot water on heat exchanger 31.
In the process of above-mentioned generation hot water, thermal medium liquid in the steam generating device 20 is evaporated below atmospheric pressure, the condensed water of condensation is pooled to condensed water collecting board 40 in the steam chest 23, and can not drop to heating tube 24, thereby the efficient that steam produces is very high, shorten the rise time of hot water, improved efficient simultaneously.Steam generating device 20 is maintained vacuum state, can form non-interior laminated structure, thereby save manufacturing expense, improved security at the following heat of evaporation media fluid of atmospheric pressure.
The condensed water of condensation is by being regulated flow control valve 50 controls of degree of opening by the signal that is arranged on temperature sensor 35 outputs on the hot water storage tank 32 in steam chest 23, promptly, with the set water temperature (for example 60 ℃ to 80 ℃) in the hot water storage tank 32 is benchmark, when being lower than design temperature with the degree of opening of enlargement discharge control valve 50, so that turning back to water tank 22, more condensed water increases evaporation capacity, on the other hand, more near design temperature, then openness diminishes gradually, the amount that turns back to the condensed water of water tank 22 also can correspondingly reduce, thereby the evaporation capacity of thermal medium liquid also can correspondingly reduce, so the thermal source of heat hot switch 31 (steam) also can reduce, thereby avoided the hot water in the heat exchanger 31 overheated.So can effectively prevent the boiling of hot water in the hot water storage tank 32, avoid the danger of blast.
Fig. 3 is the generalized section of the 2nd embodiment that the present invention relates to, and the component units identical with the 1st embodiment is with identical sign flag and save and specify.With the 1st embodiment difference be that entrance side at the flow control valve 50 of described water-circulating pipe 25 is provided with condensed water storage tank 60, outlet side at flow control valve 50 is provided with valve 61, and the capacity of described condensed water storage tank 60 is greater than the amount that is injected into the thermal medium liquid in the described steam generating device 20.
When aforesaid the present invention's the 2nd embodiment, the hot water that stores in hot water storage tank 32 were discharged (use) interruption, valve-off 61 interrupted steam generating device 20 and produces steam, generates (heating) hot water thereby interrupt heat exchanger 31.When heat exchanger 31 interrupted the hot water heating, the condensed water of condensation can be stored in the condensed water storage tank 60 in steam chest 23, and not to water tank 22 supply condensed waters, so can stop Waste Heat Recovery.
If the condensed water of condensation in the steam chest 23 is stored in the condensed water storage tank 60, just can not remain condensed water on the condensed water collecting board 40 so, even interruption heat hot water, the heat of the combustion tail gas radiation that will discharge to Waste Heat Recovery pipe 21 is delivered to condensed water collecting board 40, hot medium liquid evacuator body phenomenon can not take place yet, thereby can effectively prevent the boiling of hot water storage tank 32.
In addition, when after heat exchanger 31 interrupts heat hot water, needing to regenerate hot water, open valve 61, the condensed water that stores in the condensed water storage tank 60 is fed to water tank 22, can generate steam at heating tube 24 places, thereby can regenerate hot water rapidly.
[invention effect]
The present invention is provided with the steam generating device of non-interior laminated structure in the flue of thermal source, at described steam Be provided with the condensation water collection plate in the steam chest of generation equipment, drop to heating tube to prevent condensed water, thereby Improve the steam generation efficiency, and shortened the steam generation time, improved simultaneously efficient, reduced system Cause this.
In addition, in water-circulating pipe, be provided with flow control valve, to transfer according to the water temperature in the hot water storage tank The steam generation of joint steam generating device, and regulate and supply to heat by regulating described steam generation The thermal source of switch, thus prevented that the hot water in the hot water storage tank from seething with excitement, improved security, and control Make easy.
The present invention also is provided with the condensed water storage tank in water-circulating pipe, and thereunder is provided with valve, because of This can store condensed water when interrupting heat hot water, and can be with condensation when needs regenerate hot water Water is fed to water tank, thereby regenerates rapidly hot water.

Claims (5)

1. the waste heat recovery plant of a thermal source, comprise: steam generating device, described steam generating device has water tank and steam chest, described water tank is positioned at the below of the Waste Heat Recovery pipe that is connected to the thermal source flue, described steam chest is positioned at the top of described Waste Heat Recovery pipe, be provided with a plurality of heating tubes between described water tank and steam chest, described heating tube connects described Waste Heat Recovery pipe, and described steam chest utilizes water-circulating pipe to be connected with water tank; The hot water heating circuit, it is built-in with heat exchanger and by supply pipe and recurrent canal the hot water storage tank is connected to described heat exchanger in described steam chest; The condensed water collecting board, it is arranged on the below of described water-circulating pipe connecting portion of the heat exchanger below of described steam chest, and the both sides of described condensed water collecting board are formed with path; Flow control valve, it is arranged on the described water-circulating pipe.
2. the waste heat recovery plant of thermal source as claimed in claim 1 wherein injects water in described steam generating device, and keeps vacuum state.
3. the waste heat recovery plant of thermal source as claimed in claim 1, wherein said flow control valve is controlled by the output signal that is arranged on the temperature sensor on the described hot water storage tank.
4. the waste heat recovery plant of thermal source as claimed in claim 1, wherein described water-circulating pipe is provided with the condensed water storage tank, and is provided with valve below described condensed water storage tank.
5. the waste heat recovery plant of thermal source as claimed in claim 4, the capacity of wherein said condensed water storage tank is greater than the amount of the water that injects in the described steam generating device.
CN2005100665966A 2004-05-10 2005-04-28 Afterheat recovery apparatus of heat source furnace Expired - Fee Related CN100406812C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020040032583A KR100561975B1 (en) 2004-05-10 2004-05-10 Waste heat collection apparatus of heat producer
KR1020040032583 2004-05-10

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CN1696584A CN1696584A (en) 2005-11-16
CN100406812C true CN100406812C (en) 2008-07-30

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WO2008142772A1 (en) * 2007-05-21 2008-11-27 Global Environment Access Holdings Limited Wastewater treatment system
KR100814001B1 (en) * 2007-05-28 2008-03-14 주식회사 동광에너텍 Multipurpose boiler
KR100935424B1 (en) * 2007-10-25 2010-01-06 정진희 The condensate receiver tank with heat exchanger
KR100925051B1 (en) * 2008-11-05 2009-11-03 김경천 Vertical and horizental type heat exchanger unit having waste heat withdrawal apparatus
KR101172422B1 (en) * 2009-12-11 2012-08-08 에스케이씨 주식회사 Waste Heat Recovery System
CN102692024A (en) * 2012-01-14 2012-09-26 河南科技大学 Device and method for exhausting waste gas by utilizing industrial waste heat
CN102788415A (en) * 2012-08-29 2012-11-21 彭勇 Improved water heater performing heating through waste heat of cooking bench
CN104033271B (en) * 2014-05-26 2016-06-15 北京时代科锐新能源科技有限公司 A kind of efficient waste heat recycling system
CN104534744A (en) * 2014-12-30 2015-04-22 黑龙江国德节能服务有限公司 Device and method for extracting coal-fired boiler fuel gas to serve as heat pump heat source by means of heat pipes
KR101724277B1 (en) * 2015-09-17 2017-04-07 주식회사 동광보일러 Exhaust heat collection apparatus of boiler
CN105588096A (en) * 2016-03-16 2016-05-18 邱理 Steam generator
CN106677839A (en) * 2017-01-13 2017-05-17 沈阳绿色环保能源科技有限公司 System and method for converting hot water into mechanical power
KR101856194B1 (en) * 2017-12-12 2018-05-10 (주)이화산업 System that recovers and resumes cookers waste steam
CN113324421B (en) * 2021-06-08 2022-11-08 安徽伽雅生态工程有限公司 Condensate water waste heat recycling device
CN113883718B (en) * 2021-10-15 2023-03-21 中船九江锅炉有限公司 Double-cavity boiler for ship
KR102618663B1 (en) * 2021-12-27 2023-12-29 인하대학교 산학협력단 Boiler

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US4530311A (en) * 1982-03-18 1985-07-23 Outokumpu Oy Waste heat boiler construction
JPH05223489A (en) * 1992-02-17 1993-08-31 Mitsubishi Electric Corp Waste heat recovering dispersion plate for internal-combustion engine
CN2322121Y (en) * 1998-04-06 1999-06-02 敫铁拴 Boiler waste heat super conductive exchanger
CN2413255Y (en) * 2000-01-25 2001-01-03 陈东 Heat loop
CN1294288A (en) * 1999-10-24 2001-05-09 胡光南 Method and equipment for reclaiming afterheat of used shower water

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4530311A (en) * 1982-03-18 1985-07-23 Outokumpu Oy Waste heat boiler construction
JPH05223489A (en) * 1992-02-17 1993-08-31 Mitsubishi Electric Corp Waste heat recovering dispersion plate for internal-combustion engine
CN2322121Y (en) * 1998-04-06 1999-06-02 敫铁拴 Boiler waste heat super conductive exchanger
CN1294288A (en) * 1999-10-24 2001-05-09 胡光南 Method and equipment for reclaiming afterheat of used shower water
CN2413255Y (en) * 2000-01-25 2001-01-03 陈东 Heat loop

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Publication number Publication date
JP3909077B2 (en) 2007-04-25
KR100561975B1 (en) 2006-03-22
KR20050107843A (en) 2005-11-16
JP2005321190A (en) 2005-11-17
CN1696584A (en) 2005-11-16

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