CN204213956U - A kind of boiler smoke step waste heat recovery economizer - Google Patents
A kind of boiler smoke step waste heat recovery economizer Download PDFInfo
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- CN204213956U CN204213956U CN201420642103.3U CN201420642103U CN204213956U CN 204213956 U CN204213956 U CN 204213956U CN 201420642103 U CN201420642103 U CN 201420642103U CN 204213956 U CN204213956 U CN 204213956U
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- heat exchanger
- exchanger tube
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- step waste
- heat
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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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
The utility model discloses a kind of boiler smoke step waste heat recovery economizer, comprise the first heat exchanger tube, purifying tube, the second heat exchanger tube that sequentially connect, smoke inlet is arranged on the one end at the first heat exchanger tube top, the inwall of the first heat exchanger tube, the second heat exchanger tube is provided with super heat-conductive pipe, cylindrical tank is arranged with at the outer wall of the first heat exchanger tube, the second heat exchanger tube, between the first heat exchanger tube and purifying tube, interface channel is provided with dust sucking device, is provided with sprayer unit at the top inner chamber of purifying tube.The utility model boiler smoke step waste heat recovery economizer has that structure is simple, rationally distributed, utilization rate is high, energy-conserving and environment-protective, realize step waste heat recovery, overcome existing economizer flue gas exit temperature and can not drop to the advantages such as the following difficult problem of acid dew point.
Description
Technical field
The utility model relates to boiler, specifically refers to a kind of boiler smoke step waste heat recovery economizer.
Background technology
It is many that biomass molding fuel has volatile matter, can reach 70%-80%(and entirely separate out at 250-350 DEG C), the difficult after-flame of coke, sulfur content is few; Reach (25%-55%) without pretreatment water content, after process, be generally less than 10%; Phosphorus content is few, and the low heat valve 14-16MJ/kg of stalk is about the feature of the half of mark coal (29.3MJ/kg).Existing conventional chain horizontal boiler, owing to being mainly applicable to coal-burning boiler, is not suitable with, even if be configured with Secondary Air biomass molding fuel, but because Secondary Air flue gas does not form great turbulence level, be difficult to STRENGTH ON COKE and burn, not only the thermal efficiency is low, and flue dust is large, discharge is difficult to up to standard.
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.
Utility model content
The purpose of this utility model is to provide that a kind of structure is simple, rationally distributed, utilization rate is high, energy-conserving and environment-protective, realize step waste heat recovery, overcome the boiler smoke step waste heat recovery economizer that existing economizer flue gas exit temperature can not drop to the following difficult problem of acid dew point.
The utility model can be achieved through the following technical solutions:
A kind of boiler smoke step waste heat recovery economizer, comprise the first heat exchanger tube, purifying tube, the second heat exchanger tube that sequentially connect, smoke inlet is arranged on the one end at the first heat exchanger tube top, the inwall of the first heat exchanger tube, the second heat exchanger tube is provided with super heat-conductive pipe, cylindrical tank is arranged with at the outer wall of the first heat exchanger tube, the second heat exchanger tube, between the first heat exchanger tube and purifying tube, interface channel is provided with dust sucking device, be provided with sprayer unit at the top inner chamber of purifying tube, the first heat exchanger tube, the second heat exchanger tube adopt acid resisting material to be made.
Described super heat-conductive pipe is evenly distributed with some from top to bottom, and every root is arranged with same angle of inclination.
The bottom of described first heat exchanger tube, purifying tube, the second heat exchanger tube is equipped with dust export.
The lower end of described second heat exchanger tube is provided with exhaust outlet.
The utility model boiler smoke step waste heat recovery economizer, compared with prior art, has following beneficial effect:
The first, topology layout is reasonable, and structure is simple;
The second, by adopting super heat-conductive pipe heat exchange in the first heat exchanger tube, the second heat exchanger tube, heat exchange efficiency is high;
Three, the first heat exchanger tube, the second heat exchanger tube adopt acid resisting material, and 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 is the structural representation of the utility model boiler smoke step waste heat recovery economizer;
Accompanying drawing 2 is the plan structure schematic diagram of the utility model boiler smoke step waste heat recovery economizer;
Reference numeral is: 1, smoke inlet, 2, cylindrical tank, 3, super heat-conductive pipe, 4, dust export machine, 5, purifying tube, 6, dust sucking device, 7, sprayer unit, and the 8, first heat exchanger tube, the 9, second heat exchanger tube, 10, exhaust outlet.
Detailed description of the invention
In order to make those skilled in the art person understand the technical solution of the utility model better, below in conjunction with embodiment and accompanying drawing, the utility model product is described in further detail.
As Fig. 1, shown in Fig. 2, a kind of boiler smoke step waste heat recovery economizer, comprise the first heat exchanger tube 8 sequentially connected, purifying tube 5, second heat exchanger tube 9, smoke inlet 1 is arranged on the one end at the first heat exchanger tube 8 top, at the first heat exchanger tube 8, the inwall of the second heat exchanger tube 9 is provided with super heat-conductive pipe 3, at the first heat exchanger tube 8, the outer wall of the second heat exchanger tube 9 is arranged with cylindrical tank 2, between the first heat exchanger tube 8 and purifying tube 5, interface channel is provided with dust sucking device 6, sprayer unit 7 is provided with at the top inner chamber of purifying tube 5, first heat exchanger tube, second heat exchanger tube adopts acid resisting material to be made.
As shown in Figure 1, described super heat-conductive pipe 3 is evenly distributed with some from top to bottom, and every root is arranged with same angle of inclination.
As shown in Figure 1, the bottom of described first heat exchanger tube 8, purifying tube 5, second heat exchanger tube 9 is equipped with dust export 4.
The lower end of described second heat exchanger tube 9 is provided with dust export 10.
The above, be only preferred embodiment of the present utility model, not does any pro forma restriction to the utility model; The those of ordinary skill of all industry all can shown in by specification accompanying drawing and the above and implement the utility model swimmingly; But all those skilled in the art are not departing within the scope of technical solutions of the utility model, disclosed above technology contents can be utilized and make a little change, modify with differentiation equivalent variations, be Equivalent embodiments of the present utility model; Meanwhile, all according to substantial technological of the present utility model to the change of any equivalent variations that above embodiment is done, modify and differentiation etc., within the protection domain all still belonging to the technical solution of the utility model.
Claims (4)
1. a boiler smoke step waste heat recovery economizer, it is characterized in that: comprise the first heat exchanger tube (8) sequentially connected, purifying tube (5), second heat exchanger tube (9), smoke inlet (1) is arranged on the one end at the first heat exchanger tube (8) top, in the first heat exchanger tube (8), the inwall of the second heat exchanger tube (9) is provided with super heat-conductive pipe (3), in the first heat exchanger tube (8), the outer wall of the second heat exchanger tube (9) is arranged with cylindrical tank (2), between the first heat exchanger tube (8) and purifying tube (5), interface channel is provided with dust sucking device (6), sprayer unit (7) is provided with at the top inner chamber of purifying tube (5), first heat exchanger tube, second heat exchanger tube adopts acid resisting material to be made.
2. boiler smoke step waste heat recovery economizer according to claim 1, is characterized in that: described super heat-conductive pipe (3) is evenly distributed with some from top to bottom, and every root is arranged with same angle of inclination.
3. boiler smoke step waste heat recovery economizer according to claim 2, is characterized in that: the bottom of described first heat exchanger tube (8), purifying tube (5), the second heat exchanger tube (9) is equipped with dust export (4).
4. boiler smoke step waste heat recovery economizer according to claim 3, is characterized in that: the lower end of described second heat exchanger tube (9) is provided with exhaust outlet (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420642103.3U CN204213956U (en) | 2014-10-31 | 2014-10-31 | A kind of boiler smoke step waste heat recovery economizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420642103.3U CN204213956U (en) | 2014-10-31 | 2014-10-31 | A kind of boiler smoke step waste heat recovery economizer |
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| Publication Number | Publication Date |
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| CN204213956U true CN204213956U (en) | 2015-03-18 |
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| CN201420642103.3U Active CN204213956U (en) | 2014-10-31 | 2014-10-31 | A kind of boiler smoke step waste heat recovery economizer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406185A (en) * | 2014-10-31 | 2015-03-11 | 惠州市拓丰实业有限公司 | Boiler smoke gas cascade afterheat recovery energy-saving device |
| CN108644799A (en) * | 2018-04-16 | 2018-10-12 | 谢中 | A kind of circular form filter cigarette water heater |
-
2014
- 2014-10-31 CN CN201420642103.3U patent/CN204213956U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406185A (en) * | 2014-10-31 | 2015-03-11 | 惠州市拓丰实业有限公司 | Boiler smoke gas cascade afterheat recovery energy-saving device |
| CN108644799A (en) * | 2018-04-16 | 2018-10-12 | 谢中 | A kind of circular form filter cigarette water heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Zhixiong Inventor after: Zhang Qingchun Inventor before: Wang Zhixiong |
|
| COR | Change of bibliographic data | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Two building, 516200 Donghua Avenue, Huiyang District, Guangdong, Huizhou Patentee after: GUANGDONG TUOFENG INDUSTRIAL CO., LTD. Address before: Two building, 516200 Donghua Avenue, Huiyang District, Guangdong, Huizhou Patentee before: HUIZHOU TUOFENG INDUSTRIAL CO., LTD. |