CN104406185A - Boiler smoke gas cascade afterheat recovery energy-saving device - Google Patents
Boiler smoke gas cascade afterheat recovery energy-saving device Download PDFInfo
- Publication number
- CN104406185A CN104406185A CN201410601050.5A CN201410601050A CN104406185A CN 104406185 A CN104406185 A CN 104406185A CN 201410601050 A CN201410601050 A CN 201410601050A CN 104406185 A CN104406185 A CN 104406185A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- exchanger tube
- tube
- heat exchange
- exchange tube
- 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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- 239000000779 smoke Substances 0.000 title claims abstract description 23
- 238000011084 recovery Methods 0.000 title claims abstract description 18
- 239000000428 dust Substances 0.000 claims abstract description 11
- 239000002253 acid Substances 0.000 claims abstract description 9
- 239000002918 waste heat Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 4
- 239000003245 coal Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000000746 purification Methods 0.000 abstract 3
- 238000005507 spraying Methods 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 8
- 239000003546 flue gas Substances 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 230000005494 condensation Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 230000004069 differentiation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
Landscapes
- Chimneys And Flues (AREA)
Abstract
The invention discloses a boiler smoke gas cascade afterheat recovery energy-saving device, which comprises a first heat exchange tube, a purification tube and a second heat exchange tube in sequential connection, wherein a smoke gas inlet is formed in one end of the top of the first heat exchange tube, super heat conducting pipes are arranged on the inner walls of the first heat exchange tube and the second heat exchange tube, round water tanks are arranged on the outer walls of the first heat exchange tube and the second heat exchange tube in a sleeving way, a dust suction device is arranged on a connecting passage arranged between the first heat exchange tube and the purification tube, and a spraying device is arranged in an inner cavity of the top of the purification tube. The boiler smoke gas cascade afterheat recovery energy-saving device has the advantages that the structure is simple, the layout is reasonable, the utilization rate is high, the energy is saved, the environment is protected, the cascade afterheat recovery is realized, the problem that the temperature at a smoke gas outlet of the existing coal economizer cannot be lowered to a value below the acid dewpoint is solved, and the like.
Description
Technical field
The present invention relates to boiler, specifically refer 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.
Summary of the invention
The object of this invention 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 present invention 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.
Boiler smoke step waste heat recovery economizer of the present invention, 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 boiler smoke step waste heat recovery economizer of the present invention;
Accompanying drawing 2 is the plan structure schematic diagram of boiler smoke step waste heat recovery economizer of the present invention;
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 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 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.
As shown in Figure 1, 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 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 (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 |
|---|---|---|---|
| CN201410601050.5A CN104406185A (en) | 2014-10-31 | 2014-10-31 | Boiler smoke gas cascade afterheat recovery energy-saving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410601050.5A CN104406185A (en) | 2014-10-31 | 2014-10-31 | Boiler smoke gas cascade afterheat recovery energy-saving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104406185A true CN104406185A (en) | 2015-03-11 |
Family
ID=52643833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410601050.5A Pending CN104406185A (en) | 2014-10-31 | 2014-10-31 | Boiler smoke gas cascade afterheat recovery energy-saving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104406185A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299674A (en) * | 2015-10-29 | 2016-02-03 | 山东庆星环保科技有限公司 | Multifunctional smoke energy-saving and emission reduction system |
| CN107830508A (en) * | 2017-11-30 | 2018-03-23 | 张家港市江南锅炉压力容器有限公司 | A kind of waste-heat recovery device |
| CN112044602A (en) * | 2020-08-10 | 2020-12-08 | 盐城市成功机械制造有限公司 | High-efficiency energy-saving electric dust remover with waste heat recovery device |
| CN114682050A (en) * | 2020-12-30 | 2022-07-01 | 中国石油化工股份有限公司 | Flue gas treatment device and method |
| CN119983310A (en) * | 2025-04-16 | 2025-05-13 | 上海晟煜科技有限公司 | A boiler flue directly connected to flue gas waste heat recovery heat exchanger |
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| CN1040263A (en) * | 1988-08-11 | 1990-03-07 | 阿尔斯特罗姆弗列塔根瑞典公司 | Equipment and method from wet fuel generation steam |
| US5273727A (en) * | 1991-07-16 | 1993-12-28 | Energy Conservation Partnership, Ltd. | Flue gas purification and production of dry ammonium bisulfites and bisulfates |
| CN1104755A (en) * | 1992-10-02 | 1995-07-05 | 联合能源装置股份公司 | Method and apparatus for using of waste heat of smoke from heat-engine plant |
| US5534230A (en) * | 1994-07-05 | 1996-07-09 | The Babcock & Wilcox Company | Segmented heat exchanger flue gas treatment |
| JP2006266580A (en) * | 2005-03-23 | 2006-10-05 | Honda Motor Co Ltd | Gas cooling device and gas cooling method |
| 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 |
| CN201366310Y (en) * | 2009-01-12 | 2009-12-23 | 许小林 | Waste gas treatment device for energy conservation and emission reduction |
| 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 |
| CN203147733U (en) * | 2013-04-06 | 2013-08-21 | 滦南县渤海锅炉有限公司 | Heat tube type coal economizer |
| CN204213956U (en) * | 2014-10-31 | 2015-03-18 | 惠州市拓丰实业有限公司 | A kind of boiler smoke step waste heat recovery economizer |
-
2014
- 2014-10-31 CN CN201410601050.5A patent/CN104406185A/en active Pending
Patent Citations (11)
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| US4682549A (en) * | 1985-01-23 | 1987-07-28 | Ragn-Sellsforetagen Ab | Method and an arrangement for purifying and recovering heat energy from flue gases from refuse incineration |
| CN1040263A (en) * | 1988-08-11 | 1990-03-07 | 阿尔斯特罗姆弗列塔根瑞典公司 | Equipment and method from wet fuel generation steam |
| US5273727A (en) * | 1991-07-16 | 1993-12-28 | Energy Conservation Partnership, Ltd. | Flue gas purification and production of dry ammonium bisulfites and bisulfates |
| CN1104755A (en) * | 1992-10-02 | 1995-07-05 | 联合能源装置股份公司 | Method and apparatus for using of waste heat of smoke from heat-engine plant |
| US5534230A (en) * | 1994-07-05 | 1996-07-09 | The Babcock & Wilcox Company | Segmented heat exchanger flue gas treatment |
| JP2006266580A (en) * | 2005-03-23 | 2006-10-05 | Honda Motor Co Ltd | Gas cooling device and gas cooling method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299674A (en) * | 2015-10-29 | 2016-02-03 | 山东庆星环保科技有限公司 | Multifunctional smoke energy-saving and emission reduction system |
| CN107830508A (en) * | 2017-11-30 | 2018-03-23 | 张家港市江南锅炉压力容器有限公司 | A kind of waste-heat recovery device |
| CN107830508B (en) * | 2017-11-30 | 2024-01-26 | 江苏江锅智能装备股份有限公司 | A waste heat recovery device |
| CN112044602A (en) * | 2020-08-10 | 2020-12-08 | 盐城市成功机械制造有限公司 | High-efficiency energy-saving electric dust remover with waste heat recovery device |
| CN114682050A (en) * | 2020-12-30 | 2022-07-01 | 中国石油化工股份有限公司 | Flue gas treatment device and method |
| CN114682050B (en) * | 2020-12-30 | 2023-05-05 | 中国石油化工股份有限公司 | Flue gas treatment device and method |
| CN119983310A (en) * | 2025-04-16 | 2025-05-13 | 上海晟煜科技有限公司 | A boiler flue directly connected to flue gas waste heat recovery heat exchanger |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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. |
|
| CB03 | Change of inventor or designer information |
Inventor after: Wang Zhixiong Inventor after: Zhang Qingchun Inventor before: Wang Zhixiong |
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| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150311 |
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| RJ01 | Rejection of invention patent application after publication |