CN103925698A - High-capacity fuel gas condensing hot water boiler adopting compound water circulation - Google Patents
High-capacity fuel gas condensing hot water boiler adopting compound water circulation Download PDFInfo
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- CN103925698A CN103925698A CN201410181637.5A CN201410181637A CN103925698A CN 103925698 A CN103925698 A CN 103925698A CN 201410181637 A CN201410181637 A CN 201410181637A CN 103925698 A CN103925698 A CN 103925698A
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- water
- boiler
- hot
- water boiler
- air preheater
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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
- 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]
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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
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Abstract
The invention relates to a boiler, in particular to a high-capacity fuel gas condensing hot water boiler adopting compound water circulation. The purpose is to solve the problems that because carbon steel helical finned tubes of the hot water boiler are corroded seriously, condensation is not thorough, and heat efficiency of the boiler is low. Two partition plates in the boiler are arranged in an upper boiler drum and a lower boiler drum respectively, and an air preheater is communicated with a rear water cooling wall of the hot water boiler through an economizer; the economizer is a steel-aluminum composite finned tube type economizer, the air preheater is a steel-aluminum composite finned tube type heat pipe air preheater, finned tubes of the economizer and the air preheater are respectively formed by carbon steel base tubes, outer aluminum-coated tubes and aluminum fins, the carbon steel base tubes are coated with the outer aluminum-coated tubes, and the aluminum fins are arranged on the outer walls of the outer aluminum-coated tubes; forced circulation is adopted for a high-temperature heated surface, so that water speed is ensured, safety of the water circulation is improved, and vibration possibly induced by stagnation, backflow and subcooled boiling is avoided; natural water circulation is adopted for a low-temperature heated surface, so that power consumption is reduced, and a power outage protection function is achieved. The high-capacity fuel gas condensing hot water boiler is used for heat supply.
Description
Technical field
The present invention relates to a kind of combustion gas condensation hot water boiler, be specifically related to a kind of high-capacity gas condensation hot water boiler that adopts Compound Water Cycle.
Background technology
Along with improving constantly with Air Pollution prevention and control action plan of China's natural gas production capacity implemented, accelerate clean energy resource and substituted utilization.Central heating has in recent years obtained being widely used with high-capacity gas hot-water boiler, but existing hot-water boiler exists the poor stability of water circulation and there is no the problem of power-failure protecting.While generation when having a power failure, vaporize, water hammer, cause damage to boiler and auxiliary equipment.
Flue-gas temperature is along with heat exchange process constantly eases down to after uniform temperature, corrosive gas and steam will combinations in flue gas, in the time that flue-gas temperature is reduced near the dew-point temperature of certain corrosive gas, corrosive gas in flue gas by with steam in conjunction with forming sour steam, the contact-making surface that these acid vapours the run into afterbody low temperature formation acid solution of will condensing, cause contact-making surface generation dew point corrosion or cold end corrosion, main manifestations is the general corrosion to carbon steel.
The chemical equation of corrosion process is as follows:
SO
3(gas)+H
2o (gas) → H
2sO
4(in gas, flue gas)
H
2sO
4(gas)+
xh
2o (gas) → H
2sO
4(on liquid, contact-making surface)
To sum up, the carbon steel spiral fin coil seriously corroded of existing hot-water boiler, causes the condensation thermal efficiency thorough, boiler low.
Summary of the invention
The present invention solves the carbon steel spiral fin coil seriously corroded of existing hot-water boiler, cause condensation not thoroughly, the low problem of the thermal efficiency of boiler, and then provide a kind of high-capacity gas condensation hot water boiler that adopts Compound Water Cycle.
The present invention solves the problems of the technologies described above the technical scheme of taking to be:
The high-capacity gas condensation hot water boiler of employing Compound Water Cycle of the present invention comprises energy-saving appliance, upper drum, pot internal partition, convection bank, side water wall tube, lower drum, front water-cooling wall and rear water-cooling wall and air preheater, upper drum is positioned at the top of hot-water boiler, lower drum is positioned at the bottom of hot-water boiler, in upper drum and lower drum, be provided with a pot internal partition, upper drum is communicated with lower drum by convection bank, side water wall tube is positioned on the side end face of hot-water boiler, front water-cooling wall is positioned on the front end face of hot-water boiler, rear water-cooling wall is positioned on the rear end face of hot-water boiler, air preheater is communicated with the rear water-cooling wall of hot-water boiler by energy-saving appliance, energy-saving appliance is steel-aluminum composite fin tube formula energy-saving appliance, air preheater is steel-aluminum composite fin tube formula heat-pipe air preheater, the finned tube of energy-saving appliance and air preheater by carbon steel base tube, cover aluminum pipe and aluminium fin outward and form, cover aluminum pipe outward and be coated on carbon steel base tube, aluminium fin is arranged on outer covering on the outer wall of aluminum pipe.
The invention has the beneficial effects as follows:
The energy-saving appliance of the high-capacity gas condensation hot water boiler of employing Compound Water Cycle of the present invention and air preheater all adopt carbon steel to cover the finned tube of aluminium, avoid flue gas to contact with carbon steel base tube, cover aluminum pipe and pipe fin outward and there is good low temperature resistant dew point corrosion performance, compared with existing hot-water boiler, ensure that high-capacity gas hot-water boiler realizes deep condensation, exhaust gas temperature can be dropped to below 70 DEG C, the thermal efficiency of boiler reaches 100%;
Hot-water boiler of the present invention avoided deep condensation and operation just, the generation of the dew point cold end corrosion phenomenon that occurs of latter stage or return water temperature fluctuation, realized that high-capacity gas condensation hot water boiler is efficient, safety, environmental protection operation.
Brief description of the drawings
Fig. 1 is the high-capacity gas condensation hot water boiler front view of employing Compound Water Cycle of the present invention, Fig. 2 is the D-D cutaway view of Fig. 1, Fig. 3 is the I portion enlarged drawing of Fig. 2, Fig. 4 is the F-F cutaway view of Fig. 3, Fig. 5 is the II portion enlarged drawing of Fig. 2, Fig. 6 is the G-G cutaway view of Fig. 5, Fig. 7 is the E-E cutaway view of Fig. 2, Fig. 8 is the water circulation schematic diagram of the high-capacity gas condensation hot water boiler of Compound Water Cycle of the present invention, Fig. 9 is the A-A profile of Fig. 8, Figure 10 is the B-B profile of Fig. 8, Figure 11 is that (in Fig. 8～11, single arrow is Natural Circulation for the C-C profile of Fig. 8, double-head arrow is forced circulation).
Detailed description of the invention
Detailed description of the invention one: as shown in Fig. 1～7, the high-capacity gas condensation hot water boiler of the employing Compound Water Cycle of present embodiment comprises energy-saving appliance 1, upper drum 2, pot internal partition 3, convection bank 4, side water wall tube 5, lower drum 6, front water-cooling wall 7 and rear water-cooling wall 8 and air preheater 9, upper drum 2 is positioned at the top of hot-water boiler, lower drum 6 is positioned at the bottom of hot-water boiler, in upper drum 2 and lower drum 6, be provided with pot internal partition 3, upper drum 2 is communicated with lower drum 6 by convection bank 4, side water wall tube 5 is positioned on the side end face of hot-water boiler, front water-cooling wall 7 is positioned on the front end face of hot-water boiler, rear water-cooling wall 8 is positioned on the rear end face of hot-water boiler, air preheater 9 is communicated with the rear water-cooling wall 8 of hot-water boiler by energy-saving appliance 1, energy-saving appliance 1 is steel-aluminum composite fin tube formula energy-saving appliance, air preheater 9 is steel-aluminum composite fin tube formula heat-pipe air preheater, the finned tube of energy-saving appliance 1 and air preheater 9 is by carbon steel base tube 11, cover aluminum pipe 12 and aluminium fin 13 forms outward, cover aluminum pipe 12 outward and be coated on carbon steel base tube 11, aluminium fin 13 is arranged on outer covering on the outer wall of aluminum pipe 12.
Detailed description of the invention two: as shown in Figures 2 and 3, the steel-aluminum composite fin tube of present embodiment energy-saving appliance 1 is vertical being horizontally disposed with.So arrange, horizontally disposed energy-saving appliance 1 structure has ensured to be heated evenly, and bypass circulation adjustable structure in parallel has reduced in parallel transistor the large and waterpower inhomogeneities of water resistance.Other composition and annexation are identical with detailed description of the invention one.
Detailed description of the invention three: as shown in Figure 7, the air preheater 9 of present embodiment is horizontal inclined setting.So arrange, be conducive to the discharge of a large amount of condensed waters, apply carbon steel and covered aluminium fin structure hot pipe technique, there is superior efficient heat transfer and low temperature resistant dew point corrosion performance, low temperature cold air heat is improved to burning, prevent that air channel and burner etc. from locating to freeze, carbon steel covers aluminum finned tube and has the feature of long service life, greatly reduces maintenance and more changes jobs.Other composition and annexation are identical with detailed description of the invention one or two.
Detailed description of the invention four: as shown in Fig. 1,8～11, present embodiment boiler feed water enters into upper drum 2 by energy-saving appliance 1, after 3 allotments of pot internal partition, enter convection bank 4 and a part of side water wall tube 5, then come downwards to lower drum 6 and enter in another part side water wall tube 5, then enter upper drum 2.So operation, the Compound Water Cycle combining by natural water circulation and forced water circulation designs, and has ensured the safe water speed of each section of Water flow-path, has realized the security requirement of water circulation.Between upper and lower drum, in all the other convection tubes, being Natural Circulation, is also Natural Circulation in forward and backward water-cooling wall, and water outlet finally enters heating network by upper drum.After occurring when having a power failure; under the allotment of pot internal partition 3, become Natural Circulation from forced circulation; adopt Compound Water Cycle to realize the advantage separately of pressure and Natural Circulation; the forced circulation that high-temperature surface adopts has ensured water speed; improve the security of water circulation; the vibration of having avoided the generation of stagnation, refluence and subcooled boiling to bring out, low temperature heating surface adopts natural water circulation to reach and saves power consumption and can realize power-failure protecting function.Security and the power-failure protecting problem of high-capacity gas Water Circulation for Hot Water Boiler are solved.Other composition and annexation are identical with detailed description of the invention three.
Claims (4)
1. one kind adopts the high-capacity gas condensation hot water boiler of Compound Water Cycle, described hot-water boiler comprises energy-saving appliance (1), upper drum (2), pot internal partition (3), convection bank (4), side water wall tube (5), lower drum (6), front water-cooling wall (7) and rear water-cooling wall (8) and air preheater (9), upper drum (2) is positioned at the top of hot-water boiler, lower drum (6) is positioned at the bottom of hot-water boiler, in upper drum (2) and lower drum (6), be provided with a pot internal partition (3), upper drum (2) is communicated with lower drum (6) by convection bank (4), side water wall tube (5) is positioned on the side end face of hot-water boiler, front water-cooling wall (7) is positioned on the front end face of hot-water boiler, rear water-cooling wall (8) is positioned on the rear end face of hot-water boiler, air preheater (9) is communicated with the rear water-cooling wall (8) of hot-water boiler by energy-saving appliance (1), it is characterized in that: energy-saving appliance (1) is steel-aluminum composite fin tube formula energy-saving appliance, air preheater (9) is steel-aluminum composite fin tube formula heat-pipe air preheater, the finned tube of energy-saving appliance (1) and air preheater (9) by carbon steel base tube (11), cover aluminum pipe (12) and aluminium fin (13) outward and form, cover aluminum pipe (12) outward and be coated on carbon steel base tube (11) above, aluminium fin (13) is arranged on outer covering on the outer wall of aluminum pipe (12).
2. the high-capacity gas condensation hot water boiler of employing Compound Water Cycle according to claim 1, is characterized in that: the steel-aluminum composite fin tube of energy-saving appliance (1) is vertical being horizontally disposed with.
3. the high-capacity gas condensation hot water boiler of employing Compound Water Cycle according to claim 1 and 2, is characterized in that: air preheater (9) is horizontal inclined setting.
4. the high-capacity gas condensation hot water boiler of employing Compound Water Cycle according to claim 3, it is characterized in that: boiler feed water enters into upper drum (2) by energy-saving appliance (1), after pot internal partition (3) allotment, enter convection bank (4) and a part of side water wall tube (5), then come downwards to lower drum (6) and enter in another part side water wall tube (5), then enter upper drum (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410181637.5A CN103925698A (en) | 2014-04-30 | 2014-04-30 | High-capacity fuel gas condensing hot water boiler adopting compound water circulation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410181637.5A CN103925698A (en) | 2014-04-30 | 2014-04-30 | High-capacity fuel gas condensing hot water boiler adopting compound water circulation |
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|---|---|
| CN103925698A true CN103925698A (en) | 2014-07-16 |
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| CN201410181637.5A Pending CN103925698A (en) | 2014-04-30 | 2014-04-30 | High-capacity fuel gas condensing hot water boiler adopting compound water circulation |
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Citations (9)
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|---|---|---|---|---|
| RU2185569C1 (en) * | 2001-01-23 | 2002-07-20 | Ульяновский государственный технический университет | Boiler plant |
| CN1670443A (en) * | 2004-05-24 | 2005-09-21 | 王森 | Energy-saving low-discharge heating boiler |
| CN101219495A (en) * | 2008-01-29 | 2008-07-16 | 上海哈润热能设备有限公司 | Method of manufacturing flat tube aluminum fin recuperator tube |
| CN201302410Y (en) * | 2008-09-24 | 2009-09-02 | 东华大学 | Longitudinal finned oblate tube heat exchanger for high-temperature, corrosive dusty gas |
| CN102147204A (en) * | 2011-03-24 | 2011-08-10 | 恩迅（上海）节能科技有限公司 | Energy-saving corrosion-preventing coal economizer heat exchanging tube and making method thereof |
| CN202719913U (en) * | 2012-05-16 | 2013-02-06 | 赵天波 | Compound middle-fin efficient corrosion-resistant heat exchange tube |
| CN202791960U (en) * | 2012-09-27 | 2013-03-13 | 哈尔滨红光锅炉总厂有限责任公司 | Boiler convection bank with multi-return-stroke mixed scouring structure |
| CN103363658A (en) * | 2013-07-19 | 2013-10-23 | 天津宝成机械制造股份有限公司 | Large double-barrel vertical gas boiler |
| CN203785259U (en) * | 2014-04-30 | 2014-08-20 | 哈尔滨红光锅炉总厂有限责任公司 | Large-capacity fuel gas condensation type hot water boiler adopting complex water cycle |
-
2014
- 2014-04-30 CN CN201410181637.5A patent/CN103925698A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2185569C1 (en) * | 2001-01-23 | 2002-07-20 | Ульяновский государственный технический университет | Boiler plant |
| CN1670443A (en) * | 2004-05-24 | 2005-09-21 | 王森 | Energy-saving low-discharge heating boiler |
| CN101219495A (en) * | 2008-01-29 | 2008-07-16 | 上海哈润热能设备有限公司 | Method of manufacturing flat tube aluminum fin recuperator tube |
| CN201302410Y (en) * | 2008-09-24 | 2009-09-02 | 东华大学 | Longitudinal finned oblate tube heat exchanger for high-temperature, corrosive dusty gas |
| CN102147204A (en) * | 2011-03-24 | 2011-08-10 | 恩迅（上海）节能科技有限公司 | Energy-saving corrosion-preventing coal economizer heat exchanging tube and making method thereof |
| CN202719913U (en) * | 2012-05-16 | 2013-02-06 | 赵天波 | Compound middle-fin efficient corrosion-resistant heat exchange tube |
| CN202791960U (en) * | 2012-09-27 | 2013-03-13 | 哈尔滨红光锅炉总厂有限责任公司 | Boiler convection bank with multi-return-stroke mixed scouring structure |
| CN103363658A (en) * | 2013-07-19 | 2013-10-23 | 天津宝成机械制造股份有限公司 | Large double-barrel vertical gas boiler |
| CN203785259U (en) * | 2014-04-30 | 2014-08-20 | 哈尔滨红光锅炉总厂有限责任公司 | Large-capacity fuel gas condensation type hot water boiler adopting complex water cycle |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140716 |