CN201852270U - Forced circulation hot water boiler of circulating fluidized bed - Google Patents
Forced circulation hot water boiler of circulating fluidized bed Download PDFInfo
- Publication number
- CN201852270U CN201852270U CN2010206134242U CN201020613424U CN201852270U CN 201852270 U CN201852270 U CN 201852270U CN 2010206134242 U CN2010206134242 U CN 2010206134242U CN 201020613424 U CN201020613424 U CN 201020613424U CN 201852270 U CN201852270 U CN 201852270U
- Authority
- CN
- China
- Prior art keywords
- boiler
- pipe
- forced circulation
- fluidized bed
- swing pipe
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model discloses a forced circulation hot water boiler of a circulating fluidized bed. The forced circulation hot water boiler comprises a hearth water cooled wall, wherein a lower header of the hearth water cooled wall is connected with a water return pipe; a high-temperature cyclone separator is arranged at the upper outlet of the hearth water cooled wall; a material return device is arranged on the lower part of the high-temperature cyclone separator; a swing pipe and a pipe bundle are arranged on the heated surface of the tail part of the boiler; and an air preheater is arranged below the swing pipe. The forced circulation hot water boiler has the advantages that: 1, the swing pipe and pipe bundle are adopted, so that material is saved, a structure is simplified and the boiler is easy to operate; 2, due to the bending arrangement of the swing pipe, the problem of difficult overhaul caused by staggered arrangement of the swing pipe is solved; 3, the hearth water cooled wall is formed by arranging a pipe furnace wall structure on the outer side of a membrane water cooled wall, so that the temperature of the heated surface is prevented from getting too high when a water speed is low, and the operating safety and reliability of the boiler are ensured; and 4, a valve on a pipeline between a boiler barrel and the water return pipe is opened in case of sudden power failure so as to act a certain protecting effect.
Description
Technical field
The utility model relates to a kind of hot-water boiler, relates in particular to a kind of recirculating fluidized bed hot-water boiler of forced circulation.
Background technology
General nature circulating hot water boiler adopts Natural Circulation furnace water cooling heating surface, the snakelike tube bank of brace type more, because structure and heat-transfer character cause the inner loop water flow velocity low, when hot water boiler system and heat network system led directly to, heat transfer deterioration often appearred in the high heat flux heating surface, and safety coefficient is low.And general forced-circulation hot water boiler flow process complexity, the water collateral resistance is bigger than normal.The snakelike tube bank of afterbody is adopted and is supported complex structure, maintenance difficult.
The utility model content
Technical problem to be solved in the utility model provides a kind of recirculating fluidized bed hot-water boiler that adopts forced circulation burner hearth water-cooling wall and brand-new snakelike tube bank hanging structure.
Adopt following scheme for solving above technical problem: a kind of recirculating fluidized bed hot-water boiler of forced circulation, comprise that furnace wall cooling, furnace wall cooling next part case link to each other with return pipe, exit, furnace wall cooling top is furnished with high temperature cyclone separator, be provided with material-returning device in the high temperature cyclone separator bottom, heated surface at the end of boiler is furnished with swing pipe and tube bank, and the swing pipe below is provided with air preheater.
Described tube bank is suspended in midair by swing pipe, and swing pipe adopts segmentation to be staggeredly arranged in heated surface at the end of boiler along row.
Described tube bank is snakelike tube bank.
Described furnace wall cooling adopts the tube structure to form by the fin panel casing outside.
Connect by pipeline between described drum and the return pipe, pipeline is provided with valve.
Advantage of the present utility model is: 1, adopt the swing pipe Pipe bundle structure, promptly come a swing pipe bundle with swing pipe, each row's swing pipe hangs a comb bundle, is different from traditional employing steelframe and props up the mode of hanging, and has therefore both saved material, makes the simple and easy to implement of structure change again; 2, the turnover type of swing pipe is arranged, is convenient to that the staff can pass in the turning point of swing pipe in maintenance, has solved the problem of maintenance difficulty when the swing pipe stagger arrangement is arranged; 3, furnace wall cooling adopts the tube structure to form by the fin panel casing outside, one total four fin panel casings all around, and water adopts forced circulation in the burner hearth fin panel casing of vertical lifting, the heating surface temperature is too high when having avoided water speed on the low side, has guaranteed the safe and reliable of boiler operatiopn; 4, the valve on the pipeline can play the certain protection effect between drum and the return pipe by opening when having a power failure suddenly.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is that the A-A of Fig. 1 is to cross section view
Fig. 3 is that the B-B of Fig. 1 is to cross section view.
Fig. 4 is that the C-C of Fig. 1 is to cross section view.
The specific embodiment
Shown in Fig. 1,2,3,4, a kind of recirculating fluidized bed hot-water boiler of forced circulation, comprise furnace wall cooling 1, furnace wall cooling 1 adopts the tube structure to form by the fin panel casing outside, it is low both to have overcome the Natural Circulation flow velocity, the deficiency that safety coefficient is low has overcome general forced-circulation hot water boiler flow process complexity again, the drawback that the water collateral resistance is bigger than normal; Arrange buckstay around the burner hearth, enough bearing capacitys are arranged, furnace wall cooling next part case links to each other with return pipe 7, exit, furnace wall cooling 1 top is furnished with high temperature cyclone separator 3, furnace wall cooling 1 outlet is adopted the flexible non-metallic expansion joint with high temperature whirlwind tube 3 porch, guarantee sealing property herein, be provided with material-returning device 2 in high temperature cyclone separator 3 bottoms; Heated surface at the end of boiler is furnished with swing pipe 6, snakelike tube bank 5 is by swing pipe 6 suspentions, and swing pipe 6 is positioned at heated surface at the end of boiler top, for the ease of maintenance, altogether swing pipe 6 is divided into six sections, each section all adopts along row arranges that snakelike tube bank 5 is arranged in heated surface at the end of boiler top, and snakelike tube bank 5 is connected between swing pipe next part case and the water outlet collection case, adopt the swing pipe hanging structure, thereby break through traditional supporting construction, overcome complex structure, the drawback of maintenance difficult; Air preheater 4 adopts in-line arrangement to arrange, is positioned at the heated surface at the end of boiler bottom.Connect by pipeline between drum 8 and the return pipe 7, pipeline is provided with valve.
Fuel carries out fluidized bed combustion in lower furnace portion emulsion zone combustion chamber, the hot flue gas of burning enters high temperature cyclone separator 3 by burner hearth smokestack mouth, the material that separates is sent into the ciculation fluidized burning in burner hearth emulsion zone combustion chamber again by material-returning device 2, flue gas after the separation is shouted pipe by whirlwind and is entered back-end surfaces, pass through snakelike tube bank 5 of afterbody and air preheater 4 then successively, after air-introduced machine enters chimney.
Feedwater enters fin panel casing from return pipe 7, adopts the vertical lifting structure of forced circulation to enter in the drum 8, after the pipe between process connection drum 8 and the swing pipe 6 enters swing pipe next part case, enters outlet pipe at last by the tube bank that is connected with swing pipe next part case.
Claims (6)
1. the recirculating fluidized bed hot-water boiler of a forced circulation, comprise that furnace wall cooling (1), furnace wall cooling next part case link to each other with return pipe (7), furnace wall cooling (1) exit, top is furnished with high temperature cyclone separator (3), be provided with material-returning device (2) in high temperature cyclone separator (3) bottom, it is characterized in that: heated surface at the end of boiler is furnished with swing pipe (6) and tube bank (5), the swing pipe below is provided with air preheater (4), and swing pipe is connected with drum (8) by pipe.
2. as right the recirculating fluidized bed hot-water boiler of asking 1 described a kind of forced circulation is arranged, it is characterized in that: described tube bank (5) is by swing pipe (6) suspention, and swing pipe (6) adopts segmentation to be staggeredly arranged in heated surface at the end of boiler along row.
3. the recirculating fluidized bed hot-water boiler of a kind of forced circulation as claimed in claim 2, it is characterized in that: described tube bank (5) is snakelike tube bank.
4. the recirculating fluidized bed hot-water boiler of a kind of forced circulation as claimed in claim 1 is characterized in that: described furnace wall cooling (1) adopts the tube structure to form by the fin panel casing outside.
5. the recirculating fluidized bed hot-water boiler of a kind of forced circulation as claimed in claim 1 is characterized in that: be connected by the flexible non-metallic expansion joint between described furnace wall cooling (1) and the high temperature cyclone separator (3).
6. the recirculating fluidized bed hot-water boiler of a kind of forced circulation as claimed in claim 1 is characterized in that: connect by pipeline between described drum (8) and the return pipe (7), pipeline is provided with valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206134242U CN201852270U (en) | 2010-11-19 | 2010-11-19 | Forced circulation hot water boiler of circulating fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206134242U CN201852270U (en) | 2010-11-19 | 2010-11-19 | Forced circulation hot water boiler of circulating fluidized bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201852270U true CN201852270U (en) | 2011-06-01 |
Family
ID=44094661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206134242U Expired - Fee Related CN201852270U (en) | 2010-11-19 | 2010-11-19 | Forced circulation hot water boiler of circulating fluidized bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201852270U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644648A (en) * | 2013-12-29 | 2014-03-19 | 哈尔滨红光锅炉总厂有限责任公司 | Forced water circulation high-capacity hot water boiler of circulating fluidized bed |
| CN105805735A (en) * | 2014-12-31 | 2016-07-27 | 中国科学院工程热物理研究所 | Supercritical circulating fluidized bed boiler with tail extension heated surface and tail smoke channel |
| CN105890177A (en) * | 2015-12-24 | 2016-08-24 | 郑州锅炉股份有限公司 | Forced circulation hot water system with self-power-outage-protection function |
| CN114395422A (en) * | 2022-01-25 | 2022-04-26 | 哈尔滨工业大学 | Water-cooled wall gasifier separately adopting natural circulation and forced circulation and cooling method |
-
2010
- 2010-11-19 CN CN2010206134242U patent/CN201852270U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644648A (en) * | 2013-12-29 | 2014-03-19 | 哈尔滨红光锅炉总厂有限责任公司 | Forced water circulation high-capacity hot water boiler of circulating fluidized bed |
| CN103644648B (en) * | 2013-12-29 | 2016-02-03 | 哈尔滨红光锅炉总厂有限责任公司 | A kind of Large Copacity Circulating Fluidized Bed Hot Water Boiler of forced water circulation |
| CN105805735A (en) * | 2014-12-31 | 2016-07-27 | 中国科学院工程热物理研究所 | Supercritical circulating fluidized bed boiler with tail extension heated surface and tail smoke channel |
| CN105805735B (en) * | 2014-12-31 | 2018-06-08 | 中国科学院工程热物理研究所 | The supercritical circulating fluidized bed boiler and back-end ductwork of tail extended surface |
| CN105890177A (en) * | 2015-12-24 | 2016-08-24 | 郑州锅炉股份有限公司 | Forced circulation hot water system with self-power-outage-protection function |
| CN105890177B (en) * | 2015-12-24 | 2019-04-02 | 郑州锅炉股份有限公司 | With the forced circulation hot-water heating system from power-failure protecting function |
| CN114395422A (en) * | 2022-01-25 | 2022-04-26 | 哈尔滨工业大学 | Water-cooled wall gasifier separately adopting natural circulation and forced circulation and cooling method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2012119460A1 (en) | M-type pulverized coal boiler suitable for super-high steam temperature | |
| CN203258632U (en) | Supercritical brown coal boiler | |
| CN201852270U (en) | Forced circulation hot water boiler of circulating fluidized bed | |
| WO2015014233A1 (en) | Circulating fluidized bed boiler having secondary reheat | |
| CN107477564A (en) | A kind of biomass recirculating fluidized bed boiler flue gas waste heat recovery system and method | |
| CN202691996U (en) | Pure medium temperature heat recovery boiler at cement kiln back end | |
| CN106524104A (en) | Furnace hearth split large-tonnage fixed type superheated steam generator | |
| CN104180359B (en) | Large-tonnage subcritical pressure boiler steam generator | |
| CN205579622U (en) | Natural circulation indirect hangs down low -level (stack -gas) economizer | |
| CN202692030U (en) | Circulating fluidized bed steam boiler with natural circulation | |
| CN109764328B (en) | Application method of supercritical carbon dioxide boiler | |
| CN210662862U (en) | External reheating type waste incineration boiler | |
| CN208652524U (en) | Using the heat convection supercritical carbon dioxide boiler structure of large scale flue gas recirculation | |
| CN202675903U (en) | Waste heat boiler for tunnel type stove | |
| CN102252522B (en) | Energy-saving boiler special for combustion test stand | |
| CN207179646U (en) | A kind of new full fin panel casing CFBB | |
| CN201599781U (en) | Waste-heat boiler for a four-in-one or two-in-one heating furnace of a large continuous reforming device | |
| CN105757975A (en) | Smokeless warm bath boiler | |
| CN205155925U (en) | Biomass boiler afterbody residual heat from flue gas system | |
| CN108332417B (en) | Forced circulation hot water boiler | |
| CN214536121U (en) | Low-nitrogen type overheating steam injection boiler | |
| CN104165455B (en) | A kind of waterpipe type high-temperature hot-water boiler | |
| CN202484960U (en) | Boiler-shell-type water-fire tube boiler | |
| CN210424993U (en) | Coal economizer structure | |
| CN204829826U (en) | Trinity boiler of high efficiency thermal conversion |
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: 20110601 Termination date: 20141119 |
|
| EXPY | Termination of patent right or utility model |