CN101498437B - Residual heat reclaiming apparatus for boiler vent gas - Google Patents
Residual heat reclaiming apparatus for boiler vent gas Download PDFInfo
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- CN101498437B CN101498437B CN2009101111814A CN200910111181A CN101498437B CN 101498437 B CN101498437 B CN 101498437B CN 2009101111814 A CN2009101111814 A CN 2009101111814A CN 200910111181 A CN200910111181 A CN 200910111181A CN 101498437 B CN101498437 B CN 101498437B
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Abstract
The invention provides a boiler end-gas waste-heat recovering device which comprises a steam generator and a steam-water separating device, wherein the steam generator comprises a box body, a plurality of heat pipes and sleeve pipes with the number corresponding to the number of the heat pipes; the box body is of a hollow structure, and is provided with an air inlet and an air outlet; one end of each heat pipe is respectively vertically arranged in the inner side of the box body; the other end of each heat pipe is respectively positioned above the box body; each heat pipe is of a sealing hollow structure; liquid absorption materials are fixed on the inner side wall of the heat pipe; proper amount of liquid metal is filled in the heat pipes; the outer side wall of each heat pipe positioned on the outer side of the box body is respectively provided with the sleeve pipe; the upper end and the lower end of each sleeve pipe are respectively communicated with the steam-water separating device; and saturated water is filled in each sleeve pipe. The invention is mainly used for heat recovering recycle of smoke gas and the end gas of a boiler.
Description
Technical field
The present invention relates to a kind of pot of hot exhaust gas waste-heat recovery device, it is used for boiler smoke tail gas is recycled.
Background technology
China is a developing country, and the level of comprehensive utilization of the energy is lower, and the emphasis that China is about to the research of boiler thermal output and exploitation from the beginning of the eighties turns to the reasonable utilization of energy-conservation and the energy, has developed a series of device for recovering tail gas in succession.The Chinese patent CN2329860Y of bulletin disclosed a kind of steam coal preheating device as on July 21st, 1999, it is made up of coal bunker and flue, coal bunker is double-deck four rib cylindrical shells, leave the gap between the coal bunker cylindrical shell ectonexine, the outer front-back of coal bunker cylindrical shell middle part has tail gas outlet and gas inlet respectively, flue is made up of tail gas recycle flue and exhaust emissions flue, boiler smoke tail gas carries out preheating through the intermediate course that the tail gas recycle flue enters the coal bunker cylindrical shell to fire coal, sends through exhaust blower from the exhaust emissions flue then.Also have plenty of the boiler smoke of utilization tail gas and be used for the daily life use by heat exchanger heats fresh water.But all there is such deficiency in known boiler exhaust gas retracting device: when first flue tail gas and the exchange of other medium heat, heat exchange coefficient is low, flue tail gas heat recovery and utilization rate is low, another is under most occasions, heat transmission medium is a water, and the existence owing to layer of scale makes the recovery utilization rate of flue tail gas low on the madial wall of heat exchanger like this.
Summary of the invention
The purpose of this invention is to provide a kind of residual heat reclaiming apparatus for boiler vent gas, it solves the existing not high technical problem of flue tail gas heat recovery and utilization rate.
The technical solution adopted in the present invention is such: a kind of residual heat reclaiming apparatus for boiler vent gas, comprise steam generator and water separator, described steam generator comprises casing, the sleeve pipe of a plurality of heat pipes and corresponding heat pipe quantity, described casing is hollow structure and which is provided with air inlet and exhaust outlet, one end of each heat pipe is vertical at box inside respectively, the other end of each heat pipe lays respectively at the top of casing, described heat pipe is the sealed hollow structure, the heat pipe madial wall is installed with imbibition material, be filled with the appropriate amount of fluid metal in the heat pipe, its lateral wall of each heat pipe that is positioned at the casing outside is respectively equipped with sleeve pipe, the two ends up and down of described each sleeve pipe are communicated with water separator respectively, are filled with saturation water in described each sleeve pipe.
Above-mentioned residual heat reclaiming apparatus for boiler vent gas is positioned on described its lateral wall of each heat pipe of box inside and welds a plurality of fins respectively.
By adopting the aforementioned techniques scheme, the invention has the beneficial effects as follows: because the heat transfer medium in the heat pipe is a liquid metals, its saturated vapour pressure is lower, the pressure that heat pipe is subjected to is also lower, and liquid metals does not have fouling and produces in whole heat transfer process, circulation is saturation water in the sleeve pipe, heat transmission acquisition by sleeve pipe is high-quality steam, whole device heat transfer efficiency height, compact equipment, and because the existence of heat pipe makes the vaporization of being heated of water all finish outside casing, make the flow of flue gas resistance little, can not produce dust stratification.
Description of drawings
Fig. 1 is the structural representation of embodiment;
The specific embodiment
Residual heat reclaiming apparatus for boiler vent gas is to utilize the evaporation of working fluid and condensation to transmit heat, fill with an amount of working fluid such as liquid metals after the heat pipe inboard is evacuated to higher vacuum, make to be sealed after being full of liquid in the imbibition core capillary porous material of being close to the heat pipe madial wall.Whole device is made up of two parts: heat pipe steam generator and water separator (drum).
Wherein high-temperature heat pipe is to be working medium with liquid metal (sodium, potassium etc.), because liquid metal has good heat endurance and very low saturated vapour pressure, 800 ℃ the time, saturated vapour pressure only is 0.047MPa as sodium; So under hot conditions, the liquid metal high-temperature heat pipe bears interior pressure hardly, can under the condition of high temperature, work safely.Simultaneously liquid metal has the higher latent heat of vaporization under hot conditions, as sodium 800 ℃ the time, latent heat of vaporization 3977kJ/kg, thereby the liquid metals high-temperature heat pipe can transmit a large amount of heats.
With reference to figure 1, embodiment discloses a kind of residual heat reclaiming apparatus for boiler vent gas, it comprises steam generator 1 and water separator drum 2 just, described steam generator 1 comprises casing 11,20 heat pipes 12 and 20 sleeve pipes 13, described casing 11 is for hollow structure and which is provided with air inlet 111 and exhaust outlet 112, one end of each heat pipe 12 is vertical at casing 11 inboards respectively, and be positioned at and weld a plurality of fins 121 respectively on described each heat pipe 12 its lateral wall of casing 11 inboards and be used to improve heat transfer effect, the other end of each heat pipe 12 lays respectively at the top of casing 11, described each heat pipe 12 is the sealed hollow structure, heat pipe 12 madial walls are installed with imbibition material, be filled with the appropriate amount of fluid metallic potassium in the heat pipe 12, each heat pipe 12 its lateral wall that is positioned at casing 11 outsides are respectively equipped with sleeve pipe 13, the two ends up and down of described each sleeve pipe 13 are communicated with drum 2 by tedge 14 and down-comer 15 respectively, are filled with saturation water in described each sleeve pipe 13.
In the time of the foregoing description work, boiler smoke passes through from casing 11, opposite heat tube 12 heats, convert steam state to by liquid state after liquid metals in the heat pipe 12 is heated and rise to heat pipe 12 tops, owing to be filled with saturation water on the sleeve pipe 13, the steam state metal at heat pipe 12 tops is condensed and converts liquid state again to and get back to heat pipe 12 bottoms, saturation water in the sleeve pipe 13 is heated the back vaporization and carries out carbonated drink separation from tedge 14 arrival drums 2, obtain high-quality steam, liquid saturation water then turns back to from down-comer 15 and carries out heat exchange in the sleeve pipe 13 again.By coming augmentation of heat transfer at heat pipe 12 lateral wall high-frequency welding fins 121, thereby package unit heat transfer efficiency height, compact equipment, the flue tail gas flow resistance is little, and because the existence of heat pipe makes the saturation water heat exchange finish outside flue, do not have scale formation and take place, be connected with conduit between sleeve pipe and the drum simultaneously, the connecting line of sleeve pipe and drum can be regulated length arbitrarily, on-the-spot flexible arrangement, the complete unit no-rotary part, reliable, operating maintenance is convenient.
Claims (2)
1. residual heat reclaiming apparatus for boiler vent gas, it is characterized in that: comprise steam generator and water separator, described steam generator comprises casing, the sleeve pipe of a plurality of heat pipes and corresponding heat pipe quantity, described casing is hollow structure and which is provided with air inlet and exhaust outlet, one end of each heat pipe is vertical at box inside respectively, the other end of each heat pipe lays respectively at the top of casing, described heat pipe is the sealed hollow structure, the heat pipe madial wall is installed with imbibition material, be filled with the appropriate amount of fluid metal in the heat pipe, its lateral wall of each heat pipe that is positioned at the casing outside is respectively equipped with sleeve pipe, the two ends up and down of described each sleeve pipe are communicated with water separator respectively, are filled with saturation water in described each sleeve pipe.
2. residual heat reclaiming apparatus for boiler vent gas according to claim 1 is characterized in that: be positioned on described its lateral wall of each heat pipe of box inside and weld a plurality of fins respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101111814A CN101498437B (en) | 2009-03-03 | 2009-03-03 | Residual heat reclaiming apparatus for boiler vent gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101111814A CN101498437B (en) | 2009-03-03 | 2009-03-03 | Residual heat reclaiming apparatus for boiler vent gas |
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| Publication Number | Publication Date |
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| CN101498437A CN101498437A (en) | 2009-08-05 |
| CN101498437B true CN101498437B (en) | 2011-07-06 |
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| CN2009101111814A Expired - Fee Related CN101498437B (en) | 2009-03-03 | 2009-03-03 | Residual heat reclaiming apparatus for boiler vent gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292303A (en) * | 2012-02-29 | 2013-09-11 | 中北大学 | System and method for recycling latent heat of water steam in tail gas of Slapple activating furnace |
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| CN102183002B (en) * | 2011-03-21 | 2013-05-15 | 昆明理工大学 | Organic working medium evaporator using sleeve-type thermosiphon high-efficiency heat transfer tubes |
| CN102128439B (en) * | 2011-04-11 | 2015-05-13 | 广西志远节能环保设备有限公司 | Assembly type heat-pipe steam generator of kiln furnace |
| CN102401590A (en) * | 2011-11-21 | 2012-04-04 | 昆明理工大学 | Power generation system for waste heat of medium and low temperature flue gas with heat pipe heat exchanger organic medium Rankine cycle |
| CN103629652B (en) * | 2012-02-29 | 2014-12-24 | 中北大学 | Method for recycling steam latent heat in SLEP activating furnace off-gas |
| CN103884005B (en) * | 2012-12-20 | 2017-03-08 | 上海蕲黄节能环保设备有限公司 | A kind of coke oven exhaust waste heat recovery device |
| CN104019955B (en) * | 2014-05-30 | 2016-05-04 | 西安交通大学 | Shell-and-tube steam generator stream-liquid two-phase flow simulation system and analogy method |
| CN110095002A (en) * | 2018-03-13 | 2019-08-06 | 北京中矿赛力贝特节能科技有限公司 | A kind of gangue deep heat-tranferring system based on heat pipe heat exchanging technology |
| CN108548439A (en) * | 2018-05-15 | 2018-09-18 | 云南靖创液态金属热控技术研发有限公司 | A kind of flue gas waste heat power generation device and fume afterheat system |
| CN110686223B (en) * | 2018-07-05 | 2021-04-09 | 青岛宝润科技有限公司 | Solar steam generator with water level intelligent control function |
| CN110085334B (en) * | 2019-03-28 | 2022-06-14 | 中国船舶重工集团公司第七一九研究所 | Heat pipe type passive residual heat removal system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU629404A1 (en) * | 1977-05-10 | 1978-10-25 | Николаевский Ордена Трудового Красного Знамени Кораблестроительный Институт Им. Адмирала С.О.Макарова | Steam generator |
-
2009
- 2009-03-03 CN CN2009101111814A patent/CN101498437B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU629404A1 (en) * | 1977-05-10 | 1978-10-25 | Николаевский Ордена Трудового Красного Знамени Кораблестроительный Институт Им. Адмирала С.О.Макарова | Steam generator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292303A (en) * | 2012-02-29 | 2013-09-11 | 中北大学 | System and method for recycling latent heat of water steam in tail gas of Slapple activating furnace |
| CN103292303B (en) * | 2012-02-29 | 2014-02-12 | 中北大学 | System for recycling latent heat of water steam in tail gas of Slapple activating furnace |
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| CN101498437A (en) | 2009-08-05 |
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