CN102313474A - Backflow mesh rotation type flue gas waste heat recovery and purification device - Google Patents
Backflow mesh rotation type flue gas waste heat recovery and purification device Download PDFInfo
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- CN102313474A CN102313474A CN2010102227168A CN201010222716A CN102313474A CN 102313474 A CN102313474 A CN 102313474A CN 2010102227168 A CN2010102227168 A CN 2010102227168A CN 201010222716 A CN201010222716 A CN 201010222716A CN 102313474 A CN102313474 A CN 102313474A
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- flue gas
- waste heat
- heat recovery
- gas waste
- adverse current
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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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The invention discloses a flue gas waste heat recovery device, in particular to a backflow mesh rotation type flue gas waste heat recovery and purification device widely applied to industrial boilers. In the backflow mesh rotation type flue gas waste heat recovery and purification device, a mesh type heat exchange body with large specific surface area is adopted, the high-level heat energy of fuel gas is transferred to low-level heat-absorbing media in a rotary motion manner, vaporization latent heat of water vapor in flue gas can be absorbed, the temperature of discharge fuel gas approaches a normal temperature, the heat efficiency of a boiler is obviously increased, the fuel consumption can be greatly decreased, fume in the fuel gas can be prevented from being discharged, harmful gases in the fuel gas can be absorbed or catalyzed, and dual efficacies of saving energy and protecting environment are achieved.
Description
Technical field
The present invention relates to a kind of boiler afterheat reclaimer, particularly widely used adverse current grid swinging flue gas waste heat recovery purifier on middle-size and small-size Industrial Boiler.
Background technology
Traditional boiler afterheat reclaimer is nest of tubes formula structure, and the material that the most often uses is a metal tube.Be characterized in that flue gas heat passes to heat-absorbing medium water or air (heat-absorbing medium) through metal pipe-wall, its shortcoming is: 1, heat exchange area is too little, and volume is big, and weight is big, and it is big, not energy-conservation to consume metal material; 2, theoretical heat exchange efficiency is low, is no more than 40%; 3, be prone to cold end corrosion, the life-span is short; 4, the water vapour latent heat of vaporization does not reclaim in the flue gas, and exhaust gas temperature is too high; 5, do not have function of fuel gas purification; 6, do not have the desulphurization denitration function.
At present, all kinds of heat exchangers only can be realized its basic function, but flue gas heat does not obtain optimal absorption, cause waste of fuel serious, need innovation and development badly.
Want to improve the heat exchanger heat absorption efficiency, reduce fuel consumption, have only in heat absorbing side through following way: 1. under the precursor that the heat exchanger spatial volume does not increase, improve the effective contact heat-exchanging face of the hot and cold medium of heat exchanger as far as possible, the raising heat exchange efficiency; 2. reduce heat and transmit resistance; 3. reduce exhaust gas temperature as far as possible, reduce heat loss due to exhaust gas.
Adopt adverse current grid swinging flue gas waste heat recovery purifier, can effectively realize above-mentioned effect.
Summary of the invention
Modal smoke gas afterheat heat exchanger is a metal nest of tubes formula, and metal tube is inner through needing the heat-absorbing medium of heating, and the metal tube outer flow is crossed high-temperature flue gas; Because flue gas with the monolateral metal tube outer wall that washes away of convection type, therefore only has half of pipe to receive flue gas heating, as increasing heating surface; Must increase the pipe number of permutations, and then increase metal consumption, and volume also can significantly increase; Cost also can significantly increase, and gives transportation, installs and all bring difficulty, in addition; Metal pipe-wall is thicker, has increased heat transmission resistance, and it is bigger to transmit difference variation; Developed heat-pipe heat exchanger in recent years again, it separates flue gas and cold water on physical space, and absorbs and release heat by means of the heat-absorbing medium (working medium) that has phase-change characteristic under this temperature conditions is housed; Heat after it only will absorb passes to heat-absorbing medium with less thermal resistance; Breakthrough is not in fact being arranged on heat exchange area, the heat exchange thermal resistance between flue gas and the working medium and between working medium and the water, comprehensive heat exchange efficiency is no more than 50%, does not still obtain higher heat exchange efficiency.Simultaneously, because the restriction of structure and material, this type apparatus function is also more single, also just limits its range of application.
Currently just all belong to this kind structure and working method, press for innovation and development at widely used Industrial Boiler flue gas heat exchange device and smelting and heating flue gas heat exchange device.
Description of drawings:
Accompanying drawing is a topology view of the present invention.
The specific embodiment
With reference to the accompanying drawings the present invention is made further detailed description:
Shown in accompanying drawing: adverse current grid swinging flue gas waste heat recovery purifier includes: 1 smoke inlet, 2 exhanst gas outlets, the outlet of 3 heating agents, 4 refrigerants inlet, 5 grid type heat exchange bodies, 6 servo control mechanisms, 7 rotating shafts, 8 housings, 9 dividing plates.
As shown in the figure: under the dragging of servo control mechanism 6 and rotating shaft 7; Grid type heat exchange body 5 rotates; High-temperature flue gas gets into and passes the first half of grid type heat exchange body 5 by smoke inlet 1, and to grid type heat exchange body 5 release heat, and flue-gas temperature drops to and becomes low-temperature flue gas after a certain temperature and discharge from exhanst gas outlet 2; Meanwhile, grid type heat exchange body 5 is raise by temperature after the flue gas heating; Meanwhile, need the medium-refrigerant of heating, enter the mouth 4 to get into housing 8 with flow of flue gas ground in the opposite direction mode from refrigerant; And the Lower Half that gets into grid type heat exchange body 5 immediately, because this part heat exchange body is high than the refrigerant inlet temperature, there is the temperature difference; Thereby generation heat exchange; Refrigerant has absorbed the most of heat in the heat exchange body in the process of passing grid type heat exchange body 5, and forms high-temperature medium from heating agent outlet 3 outflows.So move in circles, the high-temperature flue gas heat passes to the cold temperature medium of low-temperature space continuously under the turning effort of grid type heat exchange body 5, accomplishes waste heat recovery work.
When refrigerant was water or the highdensity medium of heat conduction wet goods liquid state, dividing plate 9 can not established, and when refrigerant is cryogenic gas or air, used dividing plate 9 that two phase air-flows are separated.
The benefit of doing like this is: adverse current grid swinging flue gas waste heat recovery purifier is installed in the flue gas pipeline; Also can directly design in the burner position; Because flow direction exhaust gases passes area of section do not change, so the burner hearth flue gas pressures can not fluctuate, and each burner does not need regularly to switch yet; Thermal technology's parts are few, and are reliable; Cold and hot medium directly carries out exchange heat at same position, does not need too dark diathermanous intensity, does not therefore have heat transfer resistance, and the heat transfer rate is fast, and cold media outlet temperature and hot smoke inlet have a narrow range of temperature; Grid type heat exchange body mesh diameter can be according to needing value, in the hope of obtaining perfect heat exchange effect; Can the vapour latent heat in the flue gas be reclaimed, exhaust gas temperature can be near normal temperature, and boiler thermal output reaches capacity; The employing resistant material is made, and can absorb macromolecule nitrogen oxide and sulfur dioxide in the flue gas during preboiler feedwater, has the out of stock effect of desulfurization; For the higher boiler smoke of smoke content; In the common confining space of smoke inlet 1 and dividing plate 9, install interior dust exhaust apparatus additional; Dried flue dust can be concentrated recovery; Wet flue dust can get into the peripheral hardware settling tank to be separated, and can at present nearly all soot dust granule thing purification in all types boiler (comprising station boiler) flue gas thoroughly be solved the smoke contamination discharging.
Claims (14)
1. adverse current grid swinging flue gas waste heat recovery purifier includes: 1 smoke inlet, 2 exhanst gas outlets, the outlet of 3 heating agents, 4 refrigerants inlet, 5 grid type heat exchange bodies, 6 servo control mechanisms, 7 rotating shafts, 8 housings, 9 dividing plates.It is characterized in that hot and cold medium gets into the grid type heat exchange body that rotates simultaneously with opposite direction.
2. adverse current grid swinging flue gas waste heat recovery purifier according to claim 1 is characterized in that grid type heat exchange body 5 can be an integral body, also can combine for several piece junior unit body.
3. adverse current grid swinging flue gas waste heat recovery purifier according to claim 1 is characterized in that grid type heat exchange body 5 is to rotate.
4. adverse current grid swinging flue gas waste heat recovery purifier according to claim 1 is characterized in that grid type heat exchange body 5 can be a lightweight metal material, also can be ceramic material or other nonmetallic materials.
5. adverse current grid swinging flue gas waste heat recovery purifier according to claim 1 is characterized in that doing the flue gas 1 of heat exchange and refrigerant 4 gets into grid type heat exchange body 5 simultaneously with opposite direction left right-hand part.
6. adverse current grid swinging flue gas waste heat recovery purifier according to claim 1 is characterized in that being equiped with dividing plate 9.
7. adverse current grid swinging flue gas waste heat recovery purifier according to claim 1 is characterized in that grid type heat exchange body 5 can level installs, and also can tilt to install.
8. adverse current grid swinging flue gas waste heat recovery purifier according to claim 1 is characterized in that dividing plate 9 can level installs, and also can vertically install.
9. adverse current grid swinging flue gas waste heat recovery purifier according to claim 1 is characterized in that the heat-absorbing medium that gets into from refrigerant inlet 4 can be a water, also can be air or other suitable media.
10. adverse current grid swinging flue gas waste heat recovery purifier according to claim 1 is characterized in that dividing plate 9 and grid type heat exchange body 5 do not do relative motion.
11. adverse current grid swinging flue gas waste heat recovery purifier according to claim 1 is characterized in that can being high-temperature flue gas from the fluid of smoke inlet 1 entering, also can be other high-temperature medium.
12. adverse current grid swinging flue gas waste heat recovery purifier according to claim 1, the orientation that it is characterized in that refrigerant inlet 4 and smoke inlet 1 entering grid type heat exchange body 5 can be upper and lower to parallel entering, also can the parallel entering of left and right direction.
13. adverse current grid swinging flue gas waste heat recovery purifier according to claim 1; It is characterized in that when the medium of refrigerant inlet 4 feedings is air; The flue gas of housing 8 low-temperature end can get into refrigerant 4 intra-zones of living in that enter the mouth with the flow of control through dividing plate 9, gets into the boiler furnace burning then.
14. adverse current grid swinging flue gas waste heat recovery purifier according to claim 1 is characterized in that housing 8 inside are provided with rotating shaft 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102227168A CN102313474A (en) | 2010-06-29 | 2010-06-29 | Backflow mesh rotation type flue gas waste heat recovery and purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102227168A CN102313474A (en) | 2010-06-29 | 2010-06-29 | Backflow mesh rotation type flue gas waste heat recovery and purification device |
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| Publication Number | Publication Date |
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| CN102313474A true CN102313474A (en) | 2012-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102227168A Pending CN102313474A (en) | 2010-06-29 | 2010-06-29 | Backflow mesh rotation type flue gas waste heat recovery and purification device |
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| CN (1) | CN102313474A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107441873A (en) * | 2017-08-09 | 2017-12-08 | 华电电力科学研究院 | A kind of recuperative heat exchanger coal unit water lift and white cigarette and tobacco eliminate system |
| CN107490014A (en) * | 2017-08-09 | 2017-12-19 | 华电电力科学研究院 | A kind of recuperative heat exchanger coal unit flue gas cool-down water intake system |
| CN109059035A (en) * | 2018-08-31 | 2018-12-21 | 田军 | A kind of flue gas recirculation carbon dioxide recovery system, in accordance |
-
2010
- 2010-06-29 CN CN2010102227168A patent/CN102313474A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107441873A (en) * | 2017-08-09 | 2017-12-08 | 华电电力科学研究院 | A kind of recuperative heat exchanger coal unit water lift and white cigarette and tobacco eliminate system |
| CN107490014A (en) * | 2017-08-09 | 2017-12-19 | 华电电力科学研究院 | A kind of recuperative heat exchanger coal unit flue gas cool-down water intake system |
| CN109059035A (en) * | 2018-08-31 | 2018-12-21 | 田军 | A kind of flue gas recirculation carbon dioxide recovery system, in accordance |
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| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Hu Jianting Document name: Notification of Publication of the Application for Invention |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120111 |