CN202442619U - Air heat pipe heater for sealing of desulfurized smoke pipeline baffle of power plant - Google Patents
Air heat pipe heater for sealing of desulfurized smoke pipeline baffle of power plant Download PDFInfo
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- CN202442619U CN202442619U CN2012200502682U CN201220050268U CN202442619U CN 202442619 U CN202442619 U CN 202442619U CN 2012200502682 U CN2012200502682 U CN 2012200502682U CN 201220050268 U CN201220050268 U CN 201220050268U CN 202442619 U CN202442619 U CN 202442619U
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- heat pipe
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- flue gas
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Abstract
一种电厂脱硫烟气管路挡板密封用空气热管加热器，它包括一组钢-水重力热管、空气流通腔、烟气流通腔和壳体，所述钢-水重力热管由热段和冷段两部分组成，通过布置在壳体内部两端的花板及中间部位的隔板支撑固定，所述钢-水重力热管热段置于烟气流通腔内，所述钢-水重力热管冷段置于空气流通腔内，所述烟气流通腔与壳体上设置的烟气入口及出口连通，所述空气流通腔与壳体上设置的空气入口及出口连通，空气流通方向与烟气流通方向相反。本实用新型直接利用锅炉尾部烟气对密封用空气进行加热，既满足了对脱硫烟气管路挡板密封的要求，又提高了机组运行的经济性和安全可靠性。
An air heat pipe heater for sealing the baffle plate of a desulfurization flue gas pipeline in a power plant, which includes a group of steel-water gravity heat pipes, an air circulation cavity, a flue gas circulation cavity and a shell. The steel-water gravity heat pipe consists of a heat section and a The cold section consists of two parts, which are supported and fixed by the flower plates arranged at both ends of the shell and the partition in the middle. The hot section of the steel-water gravity heat pipe is placed in the flue gas circulation cavity, and the cold section of the steel-water gravity heat pipe The section is placed in the air circulation chamber, and the flue gas circulation chamber communicates with the smoke inlet and outlet provided on the housing, and the air circulation chamber communicates with the air inlet and outlet provided on the housing, and the air circulation direction is in line with the flue gas flow in the opposite direction. The utility model directly uses flue gas at the tail of the boiler to heat the sealing air, which not only meets the sealing requirements of the desulfurization flue gas pipeline baffle plate, but also improves the economy, safety and reliability of unit operation.
Description
Technical field
The utility model relates to a kind of air heater, is particularly useful for the adjusting of power plant desulfurization flue gas pipeline baffle plate sealing with air themperature belonged to the heat-exchange apparatus technical field.
Background technology
The world energy sources resource is main with coal, in considerable time from now on be that main electric power is supplied with basic configuration and can not changed with the coal fired power generation, and in the power plant discharged flue gas, the acid rain pollution that SO2 causes has been brought serious negative effect to atmospheric environment.At present; The power plant generally adopts limestone-gypsum wet desulphurization technology coal burning flue gas desulfurization to be reduced the discharging of SO2; When the boiler unit normally moved, desulphurization system smoke entrance baffle plate was in full-gear, and bypass this moment gas baffle is closed fully; For prevent that flue gas in the desulphurization system from leaking or untreated former flue gas through the bypass clean exhaust gases passes that bleeds, need through sealing wind its import and export gas baffle, and by-pass damper sealing; When desulphurization system breaks down; And unit be still need move the time, and the bypass gas baffle is in full-gear, and desulphurization plant flue gas import and export baffle plate is closed fully; For guaranteeing the normal maintenance in the desulphurization system, also need be through sealing wind to its import and export gas baffle sealing.Prior art seals baffle plate for getting surrounding air through seal fan, but greatly the time, can cause the thermal stress increase of baffle blades both sides with air and the flue gas temperature difference when sealing, has strengthened the risk that baffle blades is out of shape; Because sealing wind-warm syndrome degree is on the low side, can cause acidic gas in flue gas dewfall in the baffle plate in addition, the corrosion barrier material is accelerated baffle plate and is damaged.Therefore, common way is sealing to be sent into the gas baffle place after with air heat again seal.
Heating facility commonly used now is an electric heater, and its power consumption is big, and operating cost is high; And the working life of electrical heating elements is short, and heating tube only could be changed during big light maintenance, has influenced the safe and stable operation of desulphurization system.In addition, select the boiler heat primary air to mix the method that obtains desulphurization system sealing wind with a cold wind in addition, but adopt this sealing system to exist the disadvantage of following aspect as thermal source: the one, the connecting line of sealing wind system is long, and resistance is big; The 2nd, the parameter adjustment meeting of sealing wind in service and primary air system influences each other; The 3rd, the heat primary air system contains a certain amount of dust, and long-time running need be carried out separating treatment to the flying dust in the heat primary air, if system sets up cleaner, the then resistance of system increase, structure are complicated more.
The utility model content
The purpose of the utility model is the drawback to prior art, provides a kind of energy-conserving and environment-protective, desulfurization duct baffle plate stable, simple in structure to seal the wind heater.
The said problem of the utility model realizes with following technical proposals:
The air heat pipe heater is used in a kind of power plant desulfurization flue gas pipeline baffle plate sealing; Comprise one group of steel-water gravity heat pipe, circulation of air chamber, flue gas flowing lumen and housing in the formation; Said steel-water gravity heat pipe is made up of hot arc and cold section two parts, and the card through being arranged in the enclosure interior two ends and the membrane support of middle part are fixed, and said steel-water gravity heat pipe hot arc places in the flue gas flowing lumen; Said steel-water gravity heat pipe places in the circulation of air chamber for cold section; Smoke inlet that is provided with on said flue gas flowing lumen and the housing and outlet are communicated with, and the air intake that is provided with on said circulation of air chamber and the housing and exporting is communicated with, and the circulation of air direction is opposite with the flue gas circulating direction.
The air heat pipe heater is used in above-mentioned power plant desulfurization flue gas pipeline baffle plate sealing, and the inner working solution of filling of said steel-water gravity heat pipe evenly is provided with one group of fin on its seamless steel pipe outer wall.
The air heat pipe heater is used in above-mentioned power plant desulfurization flue gas pipeline baffle plate sealing, and when said steel-water gravity heat pipe was vertically arranged, steel-water gravity heat pipe hot arc was positioned at downside, and steel-water gravity heat pipe is positioned at upside for cold section.
The air heat pipe heater is used in above-mentioned power plant desulfurization flue gas pipeline baffle plate sealing, and when said steel-water gravity heat pipe was in tilted layout, steel-water gravity heat pipe hot arc was positioned at a side of flue, and steel-water gravity heat pipe is positioned at the outside for cold section.
The air heat pipe heater is used in above-mentioned power plant desulfurization flue gas pipeline baffle plate sealing; Said steel-water gravity heat pipe outer diameter φ=25 ~ 32mm; Said steel-water gravity heat pipe outer wall fin thickness δ=0.5 ~ 3mm; Adjacent fin interval S P=3 ~ 20mm, when steel-water gravity heat pipe is in tilted layout, its angle of inclination beta＞10o.
The utility model has been realized the transmission of heat from the flue gas to the air through steel-water gravity heat pipe.Can make its outlet air temperature a little less than flue-gas temperature through heat exchanging device design and optimization, sealing is little with the temperature difference of air and flue gas like this, can satisfy sealing with the requirement of air to temperature; Different with the demand of air capacity according to different units to sealing, can control heat through changing quantity and the size that heat pipe quantity, cold segment length, hot arc length, heat pipe adds fin, thereby realize sealing with the requirement of air to temperature; Air pipe line can be positioned at the boiler flue upside or be positioned at flue one side, and corresponding steel-water gravity heat pipe adopts vertical or tilt layout.The utility model and conventional electric heater relatively have the advantages that energy-saving effect is remarkable, economic benefit is good.With a 300MW generating set is example; Traditional boiler flue gas desulfurization damper sealing wind-powered electricity generation heater power is about 150kW, and this electric heater is long-term to be moved continuously, and its annual power consumption is 900; (heater average power consumption=Power x average operating time about 000kWh; 1 year needs power consumption 150kW * 6000h/=900 of electric heater operation 000kWh), substitute electric heater year grid electricity fee cost by the utility model and can practice thrift more than 360,000 yuan.In a word, the utility model directly utilizes boiler tail flue gas that sealing is heated with air, has both satisfied the requirement to the sealing of desulfurization flue gas pipeline baffle plate, has improved the economy and the security reliability of unit operation again.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further.
Fig. 1 is the flue gas desulphurization system workflow diagram;
Fig. 2 is the main cutaway view that the utility model steel-water gravity heat pipe is vertically arranged;
Fig. 3 is the partial side view that the utility model steel-water gravity heat pipe is vertically arranged;
Fig. 4 is the partial top view that the utility model steel-water gravity heat pipe is vertically arranged;
Fig. 5 is the main cutaway view that the utility model steel-water gravity heat pipe is in tilted layout;
Fig. 6 is the partial top view that the utility model steel-water gravity heat pipe is in tilted layout.
Each label is among the figure: 1, seal fan, 2, seal fan outlet check (non-return) valve, 3, the air heat pipe heater, 3-1, circulation of air chamber; 3-2, steel-water gravity heat pipe, 3-3, flue gas flowing lumen, 3-4, dividing plate, 3-5, card; 3-6, fin, 3-7, housing, 4, sealing wind control valve one, 5, sealing wind control valve two; 6, air-introduced machine, 7, desulfurization gas approach baffle plate, 8, booster fan, 9, desulfurizing tower; 10, flue gas heat exchange device, 11, desulfurization exhanst gas outlet baffle plate, 12, the bypass gas baffle, 13, chimney.
The specific embodiment
Referring to Fig. 1, the power plant flue gas desulphurization system mainly is made up of seal fan 1, seal fan outlet check (non-return) valve 2, air heat pipe heater 3, sealing wind control valve 1, sealing wind control valve 25, air-introduced machine 6, desulfurization gas approach baffle plate 7, booster fan 8, desulfurizing tower 9, flue gas heat exchange device 10, desulfurization exhanst gas outlet baffle plate 11, bypass gas baffle 12 and chimney 13.The utility model air heat pipe heater 3 can be installed on the upside or a side of boiler flue, and corresponding therewith, steel-water gravity heat pipe 3-2 can vertically or be in tilted layout, and seal fan 1 can be selected the installation site flexibly according to actual conditions.
Referring to Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6; The utility model comprises one group of steel-water gravity heat pipe 3-2, circulation of air chamber 3-1, flue gas flowing lumen 3-3 and housing 3-7 in constituting; Said steel-water gravity heat pipe 3-2 is made up of hot arc and cold section two parts; The card 3-5 through being arranged in the inner two ends of housing 3-7 and the dividing plate 3-4 support fixation of middle part; Said steel-water gravity heat pipe hot arc places in the flue gas flowing lumen 3-3, and said steel-water gravity heat pipe places in the 3-1 of circulation of air chamber for cold section, and smoke inlet that is provided with on said flue gas flowing lumen 3-3 and the housing and outlet are communicated with; Air intake that is provided with on said circulation of air chamber 3-1 and the housing and outlet are communicated with, and the circulation of air direction is opposite with the flue gas circulating direction.
Referring to Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, the inner working solution of filling of the steel-water gravity heat pipe 3-2 during the utility model constitutes evenly is provided with one group of fin 3-6 on its seamless steel pipe outer wall.
Referring to Fig. 2, Fig. 3, Fig. 4, during the utility model constitutes steel-when water gravity heat pipe 3-2 vertically arranged, steel-water gravity heat pipe hot arc was positioned at downside, steel-water gravity heat pipe is positioned at upside for cold section.
Referring to Fig. 5, Fig. 6, during the utility model constitutes steel-when water gravity heat pipe 3-2 was in tilted layout, steel-water gravity heat pipe hot arc was positioned at a side of flue, steel-water gravity heat pipe is positioned at the outside for cold section.
Referring to Fig. 3, Fig. 5; Steel-water gravity heat pipe 3-2 outer diameter φ=25 ~ 32mm during the utility model constitutes; Said steel-water gravity heat pipe 3-2 outer wall fin 3-6 thickness δ=0.5 ~ 3mm; Adjacent fin interval S P=3 ~ 20mm, when steel-when water gravity heat pipe 3-2 is in tilted layout, its angle of inclination beta＞10o.
Referring to Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, the operation principle of the utility model is:
When the air heat pipe heater that is complementary with the power plant flue gas desulphurization system 3 is in running order; The working solution of its steel-water gravity heat pipe 3-2 hot arc is heated by the hot fluid (flue gas) of heat pipe foreign cigarette air-flow cavity 3-3; The evaporation of absorption latent heat; After its steam rose to cold section, working solution steam was cooled and discharges latent heat and be condensed into liquid, and the latent heat that steam liquefaction discharges passes to the cold fluid (air) of heat pipe outer air flowing lumen 3-1 through tube wall; Air themperature is improved, and inwall flows down and turns back to evaporator section and accomplish a circulation condensation water in gravity effect lower edge.Like this; Constantly evaporate, condense through hydraulic fluid; Be delivered to the heat of steel-water gravity heat pipe 3-2 hot arc thermal source (flue gas) continuously in the low-temperature receiver (air) of cold section of steel-water gravity heat pipe 3-2 and go, promptly realized the transmission of heat from the flue gas to the air through steel-water gravity heat pipe.The temperature of flue gas is 90 ~ 130 after the general dedusting
oBetween the C, the utility model reaches 80 ~ 110 through making its outlet air temperature a little less than flue-gas temperature to air heat pipe heater design and optimization
oAbout C, sealing is little with the temperature difference of air and flue gas like this, can satisfy sealing with the requirement of air to temperature.
The utility model, can be controlled heat through changing steel-water gravity heat pipe 3-2 heat exchanger heat exchange area, thereby realize that sealing is with the requirement of air to temperature the difference of sealing with the air capacity demand according to different units in the practical implementation process.Wherein the change of heat exchange area can realize through changing quantity and the size that heat pipe quantity, cold segment length, hot arc length, heat pipe adds fin.
As the preferred embodiment of the utility model, its steel-water gravity heat pipe 3-2 adopts the stagger arrangement arrangement, and the arrangement of this steel-water gravity heat pipe 3-2 is not limited only to this.
More than be merely the most preferred embodiment of the utility model, except that above-mentioned embodiment, all in any modification of being made on the utility model basis, be equal to replacement etc. and all should be included within the protection domain that the utility model requires.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200502682U CN202442619U (en) | 2012-02-16 | 2012-02-16 | Air heat pipe heater for sealing of desulfurized smoke pipeline baffle of power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200502682U CN202442619U (en) | 2012-02-16 | 2012-02-16 | Air heat pipe heater for sealing of desulfurized smoke pipeline baffle of power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202442619U true CN202442619U (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200502682U Expired - Fee Related CN202442619U (en) | 2012-02-16 | 2012-02-16 | Air heat pipe heater for sealing of desulfurized smoke pipeline baffle of power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202442619U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075212A (en) * | 2013-01-09 | 2013-05-01 | 傅宁芳 | Enclosed air steam heating system of desulfuration baffle gate |
| CN104154549A (en) * | 2014-08-08 | 2014-11-19 | 马玉峰 | Boiler wet desulfurization and demisting, smoke reheating and chimney corrosion prevention integrated device and method |
| CN105277029A (en) * | 2015-11-26 | 2016-01-27 | 烟台创元热能科技有限公司 | Heat pipe type smoke reheater |
| CN107013926A (en) * | 2017-05-27 | 2017-08-04 | 福建长生环保有限公司 | Air heating apparatus and its application method |
| CN107120654A (en) * | 2017-05-27 | 2017-09-01 | 福建长生环保有限公司 | A kind of waste disposal method of sanitation and hygiene |
| CN113134425A (en) * | 2021-04-23 | 2021-07-20 | 华能国际电力股份有限公司上海石洞口第一电厂 | Wet-type electric dust removal device for coal-fired power plant |
-
2012
- 2012-02-16 CN CN2012200502682U patent/CN202442619U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075212A (en) * | 2013-01-09 | 2013-05-01 | 傅宁芳 | Enclosed air steam heating system of desulfuration baffle gate |
| CN104154549A (en) * | 2014-08-08 | 2014-11-19 | 马玉峰 | Boiler wet desulfurization and demisting, smoke reheating and chimney corrosion prevention integrated device and method |
| CN105277029A (en) * | 2015-11-26 | 2016-01-27 | 烟台创元热能科技有限公司 | Heat pipe type smoke reheater |
| CN107013926A (en) * | 2017-05-27 | 2017-08-04 | 福建长生环保有限公司 | Air heating apparatus and its application method |
| CN107120654A (en) * | 2017-05-27 | 2017-09-01 | 福建长生环保有限公司 | A kind of waste disposal method of sanitation and hygiene |
| CN107120654B (en) * | 2017-05-27 | 2023-08-01 | 厦门市高科禹翔科技有限公司 | Sanitary garbage disposal method |
| CN113134425A (en) * | 2021-04-23 | 2021-07-20 | 华能国际电力股份有限公司上海石洞口第一电厂 | Wet-type electric dust removal device for coal-fired power plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20150216 |
|
| EXPY | Termination of patent right or utility model |