CN104315872B - Boiler flue gas waste heat recycling and energy-saving device with boiler flue gas dust removing effect - Google Patents
Boiler flue gas waste heat recycling and energy-saving device with boiler flue gas dust removing effect Download PDFInfo
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- CN104315872B CN104315872B CN201410601094.8A CN201410601094A CN104315872B CN 104315872 B CN104315872 B CN 104315872B CN 201410601094 A CN201410601094 A CN 201410601094A CN 104315872 B CN104315872 B CN 104315872B
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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
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Abstract
The invention discloses a boiler flue gas waste heat recycling and energy-saving device with a boiler flue gas dust removing effect. The boiler flue gas waste heat recycling and energy-saving device comprises a high-temperature pressure-bearing heat tube coal economizer, a high-temperature hot water pump, hot water storage tanks and a low-temperature heat tube coal economizer, wherein the high-temperature pressure-bearing heat tube coal economizer is connected with a gas inlet of a flue; a plurality of super-conduction heat tubes are arranged in an inner cavity of the high-temperature pressure-bearing heat tube coal economizer and an inner cavity of the low-temperature heat tube coal economizer; the hot water storage tanks are arranged on the outer wall of the high-temperature pressure-bearing heat tube coal economizer and the outer wall of the low-temperature heat tube coal economizer; one ends of the super-conduction heat tubes extend into the hot water storage tanks; an exhausting opening is formed in the lower end of the low-temperature heat tube coal economizer; and the high-temperature hot water pump is placed above the top of the high-temperature pressure-bearing heat tube coal economizer and the top of the low-temperature heat tube coal economizer, is connected with the hot water storage tanks through hot water feeding tubes and are connected with the hot water feeding tubes. The boiler flue gas waste heat recycling and energy-saving device has a dust removing effect; and the problems that the temperature of a flue gas outlet of the existing coal economizer cannot be reduced to the temperature below an acid dew point, and dust cannot be removed thoroughly are solved.
Description
Technical field
The present invention relates to boiler, specifically refer to a kind of residual heat from boiler fume having boiler smoke dustproof function concurrently and reclaim energy-conservation
Device.
Background technology
The average thermal efficiency of industry coal-boiler only has 67%, and nearly 25% heat energy passes through fume emission in the middle of air, row
Up to more than 200 DEG C of cigarette temperature, had both polluted environment, wasted the fume afterheat resource of preciousness again.Therefore many large-sized boilers
All there is the shell-tube type economizer installing cast iron or stainless steel, for Mist heat recovering, preboiler feeds water.But due to
The sulfur content of coal is higher, would generally produce oxysulfide during burning, is combined rear i.e. formation sulfuric acid vapor with vapor.When province's coal
The metal pipe-wall temperature of device is less than the set point of sulfuric acid vapor（Referred to as acid dew point）, liquid sulfuric acid will be formed on its surface（Claim
For condensation）.For a long time, the corrosion that traditional economizer is caused due to condensation, or even perforated phenomenon occurs often, has a strong impact on
The operation safety of boiler, so current boiler is all to alleviate condensation and the generation of corrosion phenomenon by improving exhaust gas temperature,
Flue-gas temperature remains high.In addition the bulky, flue gas resistance of this kind of economizer is big, easy dust stratification, stifled ash, heat exchange efficiency by
Year reduces, and service life is short, often wants deashing, therefore medium small boiler is rarely employed, after large-sized boiler is using a period of time, because
Fouling is seriously and substantially without high-temperature flue gas of leaving take away heat, waste the energy.Boiler smoke temperature often declines 15～18
DEG C can improve boiler efficiency 1%, therefore reduce boiler smoke temperature has become an important channel of boiler energy-saving, again simultaneously
A difficult problem for heat exchanger tube cold end corrosion must be solved.
Content of the invention
It is an object of the invention to provide a kind of boiler smoke step waste heat recovery has the energy-saving appliance of dustproof function concurrently, to overcome
Existing economizer flue gas exit temperature can not drop to a difficult problem for below acid dew point, and the halfway difficult problem of dedusting, thoroughly solves
Boiler smoke energy-saving appliance outlet temperature cannot be below the industry law of acid dew point.
The present invention can be achieved through the following technical solutions：
A kind of residual heat from boiler fume having boiler smoke dustproof function concurrently reclaims energy saver, saves including high-temperature bearing heat pipe
Coal device, high temperature hot water pump, heat storage water tank, Cryo Heat Tube economizer, high-temperature bearing heat pipe economizer is connected with flue air inlet,
High-temperature bearing heat pipe economizer, the inner chamber of Cryo Heat Tube economizer are provided with some super heat-conductive pipes, save coal in high-temperature bearing heat pipe
Device, the outer wall of Cryo Heat Tube economizer are provided with heat storage water tank, and one end of super heat-conductive pipe extend in heat storage water tank, high-temperature bearing heat
Pipe economizer is led directly to Cryo Heat Tube economizer, is provided with out in the bottom of high-temperature bearing heat pipe economizer, Cryo Heat Tube economizer
Grey mouth, is provided with exhaust outlet in Cryo Heat Tube economizer lower end, high temperature hot water pump is placed in high-temperature bearing heat pipe economizer, Cryo Heat Tube
The top at economizer top, is connected with heat storage water tank by hot water inlet pipe, and high temperature hot water pump is connected with hot water outlet pipe.
The inclined angle of described super heat-conductive pipe is arranged on high-temperature bearing heat pipe economizer, the inner chamber of Cryo Heat Tube economizer
In.
Described ash hole is connected with cement output tank.
The residual heat from boiler fume recovery energy saver that this practicality has boiler smoke dustproof function concurrently has the advantages that：
Using super heat-conductive pipe heat exchange, heat exchange efficiency is high.High temperature side adopts pressure-bearing to design, and decreases the difficult problems such as high-temperature resistant water pump cavitation.Low
Warm side, using the design of no pressure-bearing, reduces equipment investment, using acid resisting material as heat exchanger, solves flue gas and is less than acid dew point
The problem of corrosion, flue gas exhaust gas temperature can be less than acid dew point, substantially increase the recovery utilization rate of flue gas, and energy-saving effect is tradition
The several times of boiler economizer.
Brief description
The residual heat from boiler fume that accompanying drawing 1 has boiler smoke dustproof function concurrently for this practicality reclaims the structural representation of energy saver
Figure.
Reference is：1st, high-temperature bearing heat pipe economizer, 2, high temperature hot water pump, 3, heat storage water tank, 4, Cryo Heat Tube saves
Coal device, 5, super heat-conductive pipe, 6, hot water inlet pipe, 7, hot water outlet pipe, 8, ash hole, 9, cement output tank, 10, flue air inlet, 11,
Exhaust outlet.
Specific embodiment
In order that those skilled in the art more fully understand technical scheme, with reference to embodiment and accompanying drawing
Product of the present invention is described in further detail.
As shown in figure 1, the residual heat from boiler fume that the present invention has boiler smoke dustproof function concurrently reclaims energy saver, including high
Warm pressure-bearing heat pipe economizer 1, high temperature hot water pump 2, heat storage water tank 3, Cryo Heat Tube economizer 4, high-temperature bearing heat pipe economizer 1 with
Flue air inlet 10 connects, and the inner chamber of high-temperature bearing heat pipe economizer 1, Cryo Heat Tube economizer 4 is provided with some heat superconductings
Pipe 5, is provided with heat storage water tank 3, one end of super heat-conductive pipe 5 in the outer wall of high-temperature bearing heat pipe economizer 1, Cryo Heat Tube economizer 4
It extend in heat storage water tank 3, high-temperature bearing heat pipe economizer 1 is led directly to Cryo Heat Tube economizer 4, save coal in high-temperature bearing heat pipe
Device 1, the bottom of Cryo Heat Tube economizer 4 are provided with ash hole 8, are provided with exhaust outlet 11 in Cryo Heat Tube economizer 4 lower end, high warm
Water pump 2 is placed in high-temperature bearing heat pipe economizer 1, the top at Cryo Heat Tube economizer 4 top, by hot water inlet pipe 6 and heat accumulation
Water tank 3 connects, and high temperature hot water pump 2 is connected with hot water outlet pipe 7.The inclined angle of described super heat-conductive pipe 5 is arranged on high-temperature bearing
In heat pipe economizer 1, the inner chamber of Cryo Heat Tube economizer 4.Described ash hole 8 is connected with cement output tank 9.
The high-temperature bearing heat pipe that the present invention has the residual heat from boiler fume recovery energy saver of boiler smoke dustproof function concurrently saves
Coal device, Cryo Heat Tube economizer water (flow) direction and flue gas direction adverse current, abundant Mist heat recovering.
The residual heat from boiler fume that the present invention has boiler smoke dustproof function concurrently reclaims energy saver operation principle：Boiler smoke
Tangential entrance high pressure heat pipe economizer, downwards, flue dust falls under gravity into ash storage box, the water inlet of heat storage water tank to flue gas whirlwind
Entered from low-level (stack-gas) economizer exhanst gas outlet side by water circulating pump, carry out heat exchange with heat pipe, the water after heat exchange flows into and saves coal from low temperature
Heat storage water tank is injected in device smoke inlet side, goes round and begins again, the water in circulating-heating heat storage water tank.
Boiler needs moisturizing because of steam consumption water level decreasing, starts moisturizing heat-exchanger pump, and heat-exchanger pump extracts from heat storage water tank
Hot water through low-level (stack-gas) economizer heating（Temperature is less than 80 DEG C）, hot water is through the high-temperature flue gas heating of high-temperature economizer, entrance
Boiler when be steam water interface, can reach（120℃）, substantially increase flue gas heat recovery rate, save fuel ten
Divide considerable.
Energy-saving appliance of the present invention adopts cyclone dust removal, and the tangential flue gas entering in energy-saving appliance smoke pipe and heat pipe collide, on the one hand
Improve heat pipe heat exchanging efficiency, on the other hand make scorching hot flue dust collide heat exchanger surface, improve the heat exchange efficiency of heat exchanger,
Nearby velocity of flue gas is minimum for exchanger tube wall simultaneously, and flue dust falls under gravity into ash bin, has reached the effect of smoke abatement and dust control.
The above, only presently preferred embodiments of the present invention, not the present invention is made with any pro forma restriction；All
The those of ordinary skill of the industry all can shown in by specification accompanying drawing and the above and swimmingly implement the present invention；But, all
Those skilled in the art in the range of without departing from technical solution of the present invention, available disclosed above technology contents and
The a little change made, the equivalent variations modified and develop, are the Equivalent embodiments of the present invention；Meanwhile, all foundation present invention
Substantial technological above example is made the change of any equivalent variations, modify with develop etc., all still fall within the present invention's
Within the protection domain of technical scheme.
Claims (3)
1. have concurrently boiler smoke dustproof function residual heat from boiler fume reclaim energy saver it is characterised in that：Including high-temperature bearing
Heat pipe economizer（1）, high temperature hot water pump（2）, heat storage water tank（3）, Cryo Heat Tube economizer（4）, high-temperature bearing heat pipe economizer
（1）With flue air inlet（10）Connect, in high-temperature bearing heat pipe economizer（1）, Cryo Heat Tube economizer（4）Inner chamber be provided with
Some super heat-conductive pipes（5）, in high-temperature bearing heat pipe economizer（1）, Cryo Heat Tube economizer（4）Outer wall be provided with heat storage water tank
（3）, super heat-conductive pipe（5）One end extend into heat storage water tank（3）Interior, high-temperature bearing heat pipe economizer（1）Save coal with Cryo Heat Tube
Device（4）Straight-through, in high-temperature bearing heat pipe economizer（1）, Cryo Heat Tube economizer（4）Bottom be provided with ash hole（8）, in low temperature
Heat pipe economizer（4）Lower end is provided with exhaust outlet（11）, high temperature hot water pump（2）It is placed in high-temperature bearing heat pipe economizer（1）, Low Temperature Thermal
Pipe economizer（4）The top at top, by hot water inlet pipe（6）With heat storage water tank（3）Connect, high temperature hot water pump（2）With hot water
Outlet pipe（7）Connect.
2. the residual heat from boiler fume having boiler smoke dustproof function concurrently according to claim 1 reclaims energy saver, and it is special
Levy and be：Described super heat-conductive pipe（5）Inclined angle is arranged on high-temperature bearing heat pipe economizer（1）, Cryo Heat Tube economizer（4）
Inner chamber in.
3. the residual heat from boiler fume having boiler smoke dustproof function concurrently according to claim 1 reclaims energy saver, and it is special
Levy and be：Described ash hole（8）It is connected with cement output tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410601094.8A CN104315872B (en) | 2014-10-31 | 2014-10-31 | Boiler flue gas waste heat recycling and energy-saving device with boiler flue gas dust removing effect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410601094.8A CN104315872B (en) | 2014-10-31 | 2014-10-31 | Boiler flue gas waste heat recycling and energy-saving device with boiler flue gas dust removing effect |
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| Publication Number | Publication Date |
|---|---|
| CN104315872A CN104315872A (en) | 2015-01-28 |
| CN104315872B true CN104315872B (en) | 2017-02-15 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107504849A (en) * | 2017-08-23 | 2017-12-22 | 萍乡市华星化工设备填料有限公司 | Coke oven flue gas efficient energy-saving device |
| CN109140477A (en) * | 2018-10-08 | 2019-01-04 | 江苏太湖锅炉股份有限公司 | A kind of drawer type afterheat energy-saving device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4842053A (en) * | 1986-11-13 | 1989-06-27 | Fujikura Ltd. | Heat exchanger using heat pipes |
| CN101042286A (en) * | 2007-04-11 | 2007-09-26 | 昌乐县科达节能设备有限公司 | Superconducting heat pipe |
| CN201129709Y (en) * | 2007-11-22 | 2008-10-08 | 杭州市特种设备检测院 | Circular flue jacket hot pipe coal economizer |
| CN201155743Y (en) * | 2006-10-18 | 2008-11-26 | 田树林 | Superconducting heat pipe residual heat-recovering device capable of bearing pressure |
| CN202048561U (en) * | 2011-04-15 | 2011-11-23 | 蠡县富利革基布有限公司 | Smoke residual heat utilization device for boiler |
| CN203162917U (en) * | 2013-02-01 | 2013-08-28 | 上海徽航节能环保设备有限公司 | Heat pipe type boiler economizer |
| CN204214285U (en) * | 2014-10-31 | 2015-03-18 | 惠州市拓丰实业有限公司 | The residual heat from boiler fume having boiler smoke dustproof function concurrently reclaims energy saver |
-
2014
- 2014-10-31 CN CN201410601094.8A patent/CN104315872B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4842053A (en) * | 1986-11-13 | 1989-06-27 | Fujikura Ltd. | Heat exchanger using heat pipes |
| CN201155743Y (en) * | 2006-10-18 | 2008-11-26 | 田树林 | Superconducting heat pipe residual heat-recovering device capable of bearing pressure |
| CN101042286A (en) * | 2007-04-11 | 2007-09-26 | 昌乐县科达节能设备有限公司 | Superconducting heat pipe |
| CN201129709Y (en) * | 2007-11-22 | 2008-10-08 | 杭州市特种设备检测院 | Circular flue jacket hot pipe coal economizer |
| CN202048561U (en) * | 2011-04-15 | 2011-11-23 | 蠡县富利革基布有限公司 | Smoke residual heat utilization device for boiler |
| CN203162917U (en) * | 2013-02-01 | 2013-08-28 | 上海徽航节能环保设备有限公司 | Heat pipe type boiler economizer |
| CN204214285U (en) * | 2014-10-31 | 2015-03-18 | 惠州市拓丰实业有限公司 | The residual heat from boiler fume having boiler smoke dustproof function concurrently reclaims energy saver |
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| CN104315872A (en) | 2015-01-28 |
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| CB02 | Change of applicant information |
Address after: Two building, 516200 Donghua Avenue, Huiyang District, Guangdong, Huizhou Applicant after: GUANGDONG TUOFENG INDUSTRIAL CO., LTD. Address before: Two building, 516200 Donghua Avenue, Huiyang District, Guangdong, Huizhou Applicant before: HUIZHOU TUOFENG INDUSTRIAL CO., LTD. |
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Inventor after: Wang Zhixiong Inventor after: Zhang Qingchun Inventor before: Wang Zhixiong |
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