CN106382618A - Energy-saving coal saver - Google Patents
Energy-saving coal saver Download PDFInfo
- Publication number
- CN106382618A CN106382618A CN201610747163.5A CN201610747163A CN106382618A CN 106382618 A CN106382618 A CN 106382618A CN 201610747163 A CN201610747163 A CN 201610747163A CN 106382618 A CN106382618 A CN 106382618A
- Authority
- CN
- China
- Prior art keywords
- casing
- heat exchange
- energy
- side wall
- saving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/003—Feed-water heater systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- 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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to an energy-saving coal saver. The energy-saving coal saver comprises a box body and a serpentine heat exchange tube. The top and the bottom of the box body are closed; a flue gas inlet for horizontally feeding flue gas is formed in the connection of the side wall and the top of the box body; a flue gas outlet for horizontally discharging flue gas is formed in the connection of the side wall and the bottom of the box body; a Venturi tube is connected to the flue gas outlet, the serpentine heat exchange tube is distributed in a zigzag shape in the box body in a reciprocated manner and is fixed to the box body through a supporting rack; a housing, defining a sealed cavity together with the outer wall of the box body is arranged on the outer wall of the box body; the serpentine heat exchange tube is provided with a water inlet which penetrates through the upper side wall of the box body to communicate with the cavity and a water outlet which successively penetrates through the side wall of the box body and the side wall of the housing from the lower part of the housing; and a water inlet tube communicating with the cavity is further arranged in the lower part of the housing. The energy-saving coal saver provided by the invention is simple in structure, high in heat exchange efficiency, long in service life, low in cost and energy-saving and environmental-friendly.
Description
Technical field
The present invention relates to economizer is and in particular to a kind of energy-saving coal-saving device.
Background technology
Flue gas loss is a most important heat loss in boiler operatiopn, typically about 5%～12%, account for boiler heat loss
60%～70%.Install economizer additional in boiler back end ductwork, depth Mist heat recovering can be reached, increase generated energy, fall
Low coal consumption, the purpose saved desulfurization water consume, protect chimney.
Using common light pipe economizer, system complex, due to smoke evacuation in contain a large amount of dust, boiler overload operation
When, flying dust concentration and flue gas flow rate increase, and can produce abrasion to light pipe in high speed is washed away, thus reducing the intensity of tube bank,
Easily cause tube bank leakage accident, bring potential safety hazard.
And the snakelike heat exchange tube of common economizer is very big because of the water side coefficient of heat transfer, bigger than the coefficient of heat transfer of fume side
Many, close to water side temperature, the coolant-temperature gage in snakelike heat exchange tube is relatively low for the tube wall temperature of snakelike heat exchange tube, and therefore snakelike heat exchange tube holds
It is also easy to produce low temperature acid dew piont corrosion, the normal operation of this service life having severely impacted equipment and system.
Content of the invention
The technical problem to be solved is that a kind of structure of offer is simple, heat exchange efficiency is high, long service life, cost
Low, energy-conserving and environment-protective energy-saving coal-saving devices.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of energy-saving coal-saving device, including casing with snakelike change
Heat pipe, the top of described casing and bottom lock, what the side wall of described casing and top joint were provided with that level enters cigarette enters cigarette
Mouthful, it is provided with the outlet flue of horizontal smoke at the side wall of described casing and bottom connection, at described outlet flue, be connected with venturi
Pipe, described snakelike heat exchange tube is in back and forth to be distributed in described box house and fixed with casing by bracing frame in a zigzag, described case
The outer wall of body has the cavity forming sealing between a shell and the outer wall of described casing, and described snakelike heat exchange tube has and passes case
The upper portion side wall of body connects the water inlet of described cavity and passes wall box and housing sidewall successively from the bottom of casing
Outlet, the bottom of described housing is additionally provided with the water inlet pipe connecting described cavity.
Preferably, being welded with fin on described snakelike heat exchange tube.
Preferably, described fin is helical fin.
Preferably, described fin is H type fin.
Preferably, the inwall of described housing is provided with heat-insulation layer.
Preferably, wear-preventing paint is coated on described snakelike heat exchange tube.
Preferably, the inwall of described casing is provided with the guiding gutter of downward spiral.
The invention has the beneficial effects as follows：Operationally, cold water enters cabinet exterior and inner walls from water inlet pipe to the present invention
Between cavity in, flow the water inlet from the snakelike heat exchange tube water inlet by snakelike heat exchange tube flows to snakelike changing from the bottom to top
The outlet of heat pipe, flue gas enters flowing under rear right in casing from smoke inlet and then discharges from outlet flue, is changed by snakelike
Heat pipe is by the heat transfer of flue gas to the water in snakelike heat exchange tube.The cold water entering inside cavity transmits flue gas by wall box
Heat preheated, so from water inlet enter snakelike heat exchange tube coolant-temperature gage will not be too low, such that it is able to improve snakelike changing
The tube wall temperature of heat pipe, prevents cold end corrosion from producing.The Venturi tube connecting at outlet flue makes flue gas stream from the coarse to fine, makes cigarette
Gas forms " vacuum " area in the rear side of Venturi exit, and the adsorption that this region of no pressure produces is accelerated at outlet flue
Flue gas flow rate, make through heat exchange lower the temperature after drop box bottom flue dust by air-flow drive together at exhaust opening discharge casing
Outside, it is to avoid soot build-up, in box bottom, results in blockage to outlet flue.
The present invention compared with prior art has the advantage that：
1st, the present invention improves the water temperature of snakelike heat exchange tube water inlet, that is, improve the tube wall temperature of snakelike heat exchange tube, solution
Determine the cold end corrosion problem of snakelike heat exchange tube, improve the service life of snakelike heat exchange tube.
2nd, device structure is simple, difficulty of processing is little, and heat exchange efficiency is high, low cost of manufacture.
Brief description
Fig. 1 is the structural representation of the present invention；
In accompanying drawing, the list of parts representated by each label is as follows：
1st, casing, 2, snakelike heat exchange tube, 3, bracing frame, 4, housing, 5, water inlet pipe, 6, fin, 7, Venturi tube, 11, enter
Mouth, 12, outlet flue, 21, water inlet, 22, outlet, 41, cavity.
Specific embodiment
Below in conjunction with accompanying drawing, the principle of the present invention and feature are described, example is served only for explaining the present invention, and
Non- for limiting the scope of the present invention.
As shown in figure 1, a kind of energy-saving coal-saving device, including casing 1 and snakelike heat exchange tube 2, the top of described casing 1 and bottom
Closing, the side wall of described casing 1 and top joint are provided with the smoke inlet 11 that level enters cigarette, the side wall of described casing 1 and bottom
Portion joint is provided with the outlet flue 12 of horizontal smoke, is connected with Venturi tube 7 at described outlet flue 12, and Venturi tube 7 makes cigarette
Gas air-flow from the coarse to fine, makes the rear side that flue gas exports in Venturi tube 7 form " vacuum " area, the suction that this region of no pressure produces
Attached effect, accelerates the flue gas flow rate at outlet flue 12, and make the to drop flue dust of casing 1 bottom after heat exchange is lowered the temperature is driven by air-flow
Discharge outside casing 1 at exhaust opening together, it is to avoid soot build-up, in casing 1 bottom, results in blockage to outlet flue 12.
Described snakelike heat exchange tube 2 is back and forth distributed in described casing 1 inside and passes through bracing frame 3 with casing 1 admittedly in zigzag
Fixed, the outer wall of described casing 1 has a cavity 41 forming sealing between a shell and the outer wall of described casing 1, described snakelike changes
Heat pipe 2 has the water inlet 21 of the upper portion side wall described cavity 41 of connection passing casing 1 and passes successively from the bottom of casing 1
Casing 1 side wall and the outlet 22 of housing 4 side wall, the bottom of described housing 4 is additionally provided with the water inlet pipe connecting described cavity 41
5.
It is welded with fin 6 on described snakelike heat exchange tube 2.The heat exchange efficiency of snakelike heat exchange tube 2 can be increased, preferably,
Described fin 6 is set to helical fin it is ensured that bigger with the area of smoke contacts.Described fin 6 may be arranged as H type wing
Piece, the area of H type fin opposed helical fin is less, but is not easy dust stratification.
The inwall of described housing 4 is provided with heat-insulation layer, can effectively place heat and leak.
Coat wear-preventing paint on described snakelike heat exchange tube 2, can effectively reduce the abrasion of snakelike heat exchange tube 2, improve snakelike
Heat exchanger tube 2 intensity.
Preferably, the inwall of described casing 1 is provided with the guiding gutter of downward spiral, the inwall of described casing 1 is provided with
The guiding gutter of downward spiral, described guiding gutter downward spiral, on the one hand can play the guide effect to flue gas, on the other hand may be used
To increase the time of contact of flue gas and casing 1 side wall, more preferable to the pre-heat effect of casing 1 inner cold water.
Operationally, cold water enters in the cavity 41 between casing 1 outer wall and housing 4 inwall the present invention from water inlet pipe 5, by
Down to the upper flowing water inlet 21 from snakelike heat exchange tube 2 water inlet 21 by snakelike heat exchange tube 2 flows to going out of snakelike heat exchange tube 2
The mouth of a river 22, flue gas enters flowing under rear right in casing 1 from smoke inlet 11 and then discharges from outlet flue 12, by snakelike heat exchange
Pipe 2 is by the heat transfer of flue gas to the water in snakelike heat exchange tube 2.Enter the cold water within cavity 41 and pass through casing 1 side wall transmission
The heat of flue gas is preheated, so will not be too low from the coolant-temperature gage of water inlet 21 entrance snakelike heat exchange tube 2, such that it is able to improve
The tube wall temperature of snakelike heat exchange tube 2, prevents cold end corrosion from producing.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.
Claims (7)
1. a kind of energy-saving coal-saving device is it is characterised in that include casing (1) and snakelike heat exchange tube (2), the top of described casing (1)
And bottom lock, the side wall of described casing (1) and top joint are provided with the smoke inlet (11) that level enters cigarette, described casing
(1) it is provided with the outlet flue (12) of horizontal smoke at side wall and bottom connection, described outlet flue (12) place is connected with venturi
Pipe (7), described snakelike heat exchange tube (2) is in back and forth to be distributed in described casing (1) inside in a zigzag and pass through bracing frame (3) and casing
(1) fixing, the outer wall of described casing (1) has the cavity (41) forming sealing between a shell and the outer wall of described casing (1),
Described snakelike heat exchange tube (2) have pass casing (1) upper portion side wall connect described cavity (41) water inlet (21) and from
The bottom of casing (1) passes casing (1) side wall and the outlet (22) of housing (4) side wall successively, and the bottom of described housing (4) is also
It is provided with the water inlet pipe (5) connecting described cavity (41).
2. a kind of energy-saving coal-saving device according to claim 1 is it is characterised in that be welded with described snakelike heat exchange tube (2)
Fin (6).
3. a kind of energy-saving coal-saving device according to claim 2 is it is characterised in that described fin (6) is helical fin.
4. a kind of energy-saving coal-saving device according to claim 2 is it is characterised in that described fin (6) is H type fin.
5. a kind of energy-saving coal-saving device as claimed in any of claims 1 to 4 is it is characterised in that described housing (4)
Inwall is provided with heat-insulation layer.
6. a kind of energy-saving coal-saving device as claimed in any of claims 1 to 4 is it is characterised in that described snakelike heat exchange
Pipe (2) is upper to coat wear-preventing paint.
7. a kind of energy-saving coal-saving device as claimed in any of claims 1 to 4 is it is characterised in that described casing (1)
Inwall is provided with the guiding gutter of downward spiral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610747163.5A CN106382618A (en) | 2016-08-28 | 2016-08-28 | Energy-saving coal saver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610747163.5A CN106382618A (en) | 2016-08-28 | 2016-08-28 | Energy-saving coal saver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106382618A true CN106382618A (en) | 2017-02-08 |
Family
ID=57917512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610747163.5A Pending CN106382618A (en) | 2016-08-28 | 2016-08-28 | Energy-saving coal saver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106382618A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1599605A (en) * | 1977-03-22 | 1981-10-07 | Indukal Aps | Fire-tube boiler having an economizer |
| CN1609542A (en) * | 2004-11-03 | 2005-04-27 | 广西壮族自治区桂林化工机械厂 | Jacketed striated pipe deflection rod heat exchanger |
| CN201593782U (en) * | 2009-12-28 | 2010-09-29 | 抚顺石油机械有限责任公司 | Coal saver of residual heat boiler |
| CN201897209U (en) * | 2010-11-11 | 2011-07-13 | 大连熵立得传热技术有限公司 | Low-temperature smoke corrosion prevention coal economizer for hot-water backflow |
| CN204665686U (en) * | 2015-05-25 | 2015-09-23 | 苏州迪森生物能源有限公司 | A kind of biomass boiler energy saver |
| CN205402665U (en) * | 2016-03-02 | 2016-07-27 | 天津爱尔普科技发展有限公司 | Ultra -low temperature economizer |
-
2016
- 2016-08-28 CN CN201610747163.5A patent/CN106382618A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1599605A (en) * | 1977-03-22 | 1981-10-07 | Indukal Aps | Fire-tube boiler having an economizer |
| CN1609542A (en) * | 2004-11-03 | 2005-04-27 | 广西壮族自治区桂林化工机械厂 | Jacketed striated pipe deflection rod heat exchanger |
| CN201593782U (en) * | 2009-12-28 | 2010-09-29 | 抚顺石油机械有限责任公司 | Coal saver of residual heat boiler |
| CN201897209U (en) * | 2010-11-11 | 2011-07-13 | 大连熵立得传热技术有限公司 | Low-temperature smoke corrosion prevention coal economizer for hot-water backflow |
| CN204665686U (en) * | 2015-05-25 | 2015-09-23 | 苏州迪森生物能源有限公司 | A kind of biomass boiler energy saver |
| CN205402665U (en) * | 2016-03-02 | 2016-07-27 | 天津爱尔普科技发展有限公司 | Ultra -low temperature economizer |
Non-Patent Citations (1)
| Title |
|---|
| 卢啸风等: "《石灰石湿法烟气脱硫系统设备运行与事故处理》", 31 May 2009 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170208 |
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| RJ01 | Rejection of invention patent application after publication |