CN104315872A - 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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- CN104315872A CN104315872A CN201410601094.8A CN201410601094A CN104315872A CN 104315872 A CN104315872 A CN 104315872A CN 201410601094 A CN201410601094 A CN 201410601094A CN 104315872 A CN104315872 A CN 104315872A
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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 that a kind of residual heat from boiler fume having boiler smoke dustproof function concurrently reclaims energy saver.
Background technology
The evenly heat efficiency of industry coal-boiler only has 67%, and the heat energy of nearly 25% is by the middle of fume emission to air, and exhaust gas temperature, up to more than 200 DEG C, both polluted environment, wastes again valuable fume afterheat resource.Therefore many large-sized boilers all have the shell-tube type economizer installing cast iron or stainless steel, are used for Mist heat recovering, preheat boiler-feed-water.But because the sulfur content of coal is higher, usually can produce oxysulfide during burning, after being combined with steam, namely form sulfuric acid vapor.When the metal pipe-wall temperature of economizer is lower than the set point (being called acid dew point) of sulfuric acid vapor, liquid sulfuric acid (being called condensation) will be formed on its surface.For a long time, the corrosion that tradition economizer causes due to condensation, even perforated phenomenon occurs often, has a strong impact on the security of operation of boiler, so current boiler is all the generation alleviating condensation and corrosion phenomenon by improving exhaust gas temperature, flue-gas temperature remains high.In addition this kind of economizer bulky, flue gas resistance is large, easy dust stratification, stifled ash, heat exchange efficiency reduces year by year, service life is short, often wants deashing, and therefore medium small boiler seldom uses, after large-sized boiler uses a period of time, because of fouling seriously and substantially need not, high-temperature flue gas of leaving takes away heat, wastes energy.Boiler smoke temperature often declines 15 ~ 18 DEG C can improve boiler efficiency 1%, therefore reduces the important channel that boiler smoke temperature has become boiler energy-saving, must solve again a difficult problem for heat exchanger tube cold end corrosion simultaneously.
Summary of the invention
The object of this invention is to provide the energy-saving appliance that the waste heat recovery of a kind of boiler smoke step has dustproof function concurrently, to overcome the difficult problem that existing economizer flue gas exit temperature can not drop to below acid dew point, and the halfway difficult problem of dedusting, thoroughly solving boiler smoke energy-saving appliance outlet temperature can not lower than 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, comprise high-temperature bearing heat pipe economizer, 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, at high-temperature bearing heat pipe economizer, the inner chamber of Cryo Heat Tube economizer is provided with some super heat-conductive pipes, at high-temperature bearing heat pipe economizer, the outer wall of Cryo Heat Tube economizer is provided with heat storage water tank, one end of super heat-conductive pipe extend in heat storage water tank, high-temperature bearing heat pipe economizer and Cryo Heat Tube economizer lead directly to, at high-temperature bearing heat pipe economizer, the bottom of Cryo Heat Tube economizer is provided with ash hole, exhaust outlet is provided with in Cryo Heat Tube economizer lower end, high temperature hot water pump is placed in high-temperature bearing heat pipe economizer, the top at Cryo Heat Tube economizer top, be connected with heat storage water tank by hot water inlet pipe, high temperature hot water pump is connected with hot water outlet pipe.
Described super heat-conductive pipe is that angle of inclination is arranged in the inner chamber of high-temperature bearing heat pipe economizer, Cryo Heat Tube economizer.
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 following beneficial effect: adopt super heat-conductive pipe heat exchange, heat exchange efficiency is high.High temperature side adopts pressure-bearing design, decreases the difficult problems such as high-temperature resistant water pump cavitation.Low temperature side adopts without pressure-bearing design, reduces equipment investment, adopts acid resisting material as heat exchanger, solve the problem of flue gas lower than acid dew piont corrosion, flue gas exhaust gas temperature lower than acid dew point, can substantially increase the recovery utilization rate of flue gas, and energy-saving effect is the several times of conventional boiler economizer.
Accompanying drawing explanation
Accompanying drawing 1 has the structural representation of the residual heat from boiler fume recovery energy saver of boiler smoke dustproof function concurrently for this practicality.
Reference numeral is: 1, high-temperature bearing heat pipe economizer, 2, high temperature hot water pump, 3, heat storage water tank, 4, Cryo Heat Tube economizer, 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.
Detailed description of the invention
In order to make those skilled in the art person understand technical scheme of the present invention better, below in conjunction with 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, comprise 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 is connected with flue air inlet 10, at high-temperature bearing heat pipe economizer 1, the inner chamber of Cryo Heat Tube economizer 4 is provided with some super heat-conductive pipes 5, at high-temperature bearing heat pipe economizer 1, the outer wall of Cryo Heat Tube economizer 4 is provided with heat storage water tank 3, one end of super heat-conductive pipe 5 extend in heat storage water tank 3, high-temperature bearing heat pipe economizer 1 leads directly to Cryo Heat Tube economizer 4, at high-temperature bearing heat pipe economizer 1, the bottom of Cryo Heat Tube economizer 4 is provided with ash hole 8, exhaust outlet 11 is provided with in Cryo Heat Tube economizer 4 lower end, high temperature hot water pump 2 is placed in high-temperature bearing heat pipe economizer 1, the top at Cryo Heat Tube economizer 4 top, be connected with heat storage water tank 3 by hot water inlet pipe 6, high temperature hot water pump 2 is connected with hot water outlet pipe 7.Described super heat-conductive pipe 5 is arranged in the inner chamber of high-temperature bearing heat pipe economizer 1, Cryo Heat Tube economizer 4 in angle of inclination.Described ash hole 8 is connected with cement output tank 9.
The residual heat from boiler fume that the present invention has boiler smoke dustproof function concurrently reclaims the high-temperature bearing heat pipe economizer of energy saver, 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 tangentially enters high pressure heat pipe economizer, flue gas whirlwind is downward, flue dust falls under gravity into ash storage box, the water inlet of heat storage water tank is entered from low-level (stack-gas) economizer exhanst gas outlet side by water circulating pump, heat exchange is carried out with heat pipe, water after heat exchange flows into and injects heat storage water tank from low-level (stack-gas) economizer 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, start moisturizing heat-exchanger pump, heat-exchanger pump extracts the hot water (temperature is lower than 80 DEG C) through low-level (stack-gas) economizer heating from heat storage water tank, hot water heats through the high-temperature flue gas of high-temperature economizer, enter boiler time be steam water interface, can reach (120 DEG C), substantially increase flue gas heat recovery rate, save fuel very considerable.
Energy-saving appliance of the present invention adopts cyclone dust removal, tangentially enter flue gas in energy-saving appliance smoke pipe and heat pipe collides, improve heat pipe heat exchanging efficiency on the one hand, make scorching hot flue dust collision heat exchanger surface on the other hand, improve the heat exchange efficiency of heat exchanger, near exchanger tube wall, velocity of flue gas is minimum simultaneously, and flue dust falls under gravity into ash bin, reaches the effect of smoke abatement and dust control.
The above, be only preferred embodiment of the present invention, not does any pro forma restriction to the present invention; The those of ordinary skill of all industry all can shown in by specification accompanying drawing and the above and implement the present invention swimmingly; But all those skilled in the art are not departing within the scope of technical solution of the present invention, disclosed above technology contents can be utilized and make a little change, modify with differentiation equivalent variations, be Equivalent embodiments of the present invention; Meanwhile, all according to substantial technological of the present invention to the change of any equivalent variations that above embodiment is done, modify and differentiation etc., within the protection domain all still belonging to technical scheme of the present invention.
Claims (3)
1. the residual heat from boiler fume having boiler smoke dustproof function concurrently reclaims energy saver, it is characterized in that: comprise 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) is connected with flue air inlet (10), in high-temperature bearing heat pipe economizer (1), the inner chamber of Cryo Heat Tube economizer (4) is provided with some super heat-conductive pipes (5), in high-temperature bearing heat pipe economizer (1), the outer wall of Cryo Heat Tube economizer (4) is provided with heat storage water tank (3), one end of super heat-conductive pipe (5) extend in heat storage water tank (3), high-temperature bearing heat pipe economizer (1) leads directly to Cryo Heat Tube economizer (4), in high-temperature bearing heat pipe economizer (1), the bottom of Cryo Heat Tube economizer (4) is provided with ash hole (8), exhaust outlet (11) is provided with in Cryo Heat Tube economizer (4) lower end, high temperature hot water pump (2) is placed in high-temperature bearing heat pipe economizer (1), the top at Cryo Heat Tube economizer (4) top, be connected with heat storage water tank (3) by hot water inlet pipe (6), high temperature hot water pump (2) is connected with hot water outlet pipe (7).
2. the residual heat from boiler fume having boiler smoke dustproof function concurrently according to claim 1 reclaims energy saver, it is characterized in that: described super heat-conductive pipe (5) is arranged in angle of inclination in the inner chamber of high-temperature bearing heat pipe economizer (1), Cryo Heat Tube economizer (4).
3. the residual heat from boiler fume having boiler smoke dustproof function concurrently according to claim 1 reclaims energy saver, it is characterized in that: described ash hole (8) is connected with cement output tank.
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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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| 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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| CN104315872A true CN104315872A (en) | 2015-01-28 |
| CN104315872B CN104315872B (en) | 2017-02-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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)
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| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN104315872B (en) | 2017-02-15 |
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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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