CN2192807Y - Energy-saving outer circulation fluidizing bed boiler - Google Patents
Energy-saving outer circulation fluidizing bed boiler Download PDFInfo
- Publication number
- CN2192807Y CN2192807Y CN 94209975 CN94209975U CN2192807Y CN 2192807 Y CN2192807 Y CN 2192807Y CN 94209975 CN94209975 CN 94209975 CN 94209975 U CN94209975 U CN 94209975U CN 2192807 Y CN2192807 Y CN 2192807Y
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- CN
- China
- Prior art keywords
- wind
- material returning
- distribution plate
- returning device
- energy
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- 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 - Lifetime
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model relates to an energy-saving outer circulation fluidizing bed boiler. The interior of a material returning device is provided with a wind distribution plate, the material returning device is divided into an upper cavity and a lower cavity, the lower cavity is a wind chamber whose lower side is communicated with a wind sending pipe, the wind distribution plate is provided with wind hoods, each wind hood is uniformly provided with small holes, and a smoke throat pipe is connected with a cyclone separating collector by a supporting plate made of the refractory material. Therefore, the utility model has higher heat resistance, long service life, sufficient material separation, good material returning effect, complete combustion and ideal energy saving effect. Meanwhile, the discharge quantity of Nox is low, and the air pollution can be reduced.
Description
The utility model relates to a kind of fluidized-bed combustion boiler, particularly a kind of energy-saving external circulation fluidized bed boiler, and it is used for 10 tons of boilers and 7MW boiler.
Usually the Industrial Boiler kind that adopts is a lot, and as the bubbling bed boiler of routine, its efficiency of combustion is low, the in-bed tube serious wear, and desulfurization is difficulty.Also have a kind of external circulation fluidized bed boiler, it is to be provided with the material external circulating device that is formed by connecting by cyclonic separation gatherer and material returning device in the floater left side, and the ajutage that in material returning device, is provided with partition wall, wind-distributing pipe and is communicated with it.Though this boiler can improve efficiency of combustion and desulfurization degree, reduce the Nox discharge capacity, improve the feed separation effect, but because the wind-distributing pipe heat resistance that is arranged in the material returning device is good inadequately, at high temperature burn out easily, make the returning charge effect relatively poor, cause the material circulation insufficient, thereby influence efficiency of combustion, in addition, the throat tube gripper shoe that is arranged in the cyclonic separation gatherer is subjected to the effect of high-temperature flue gas, deforms easily, causes the feed separation effect not good enough.
The purpose of this utility model is to provide a kind of energy-saving external circulation fluidized bed boiler, and it is separation of material effectively, and separated material can be circulated effectively and send into the combustion chamber and fully burn, and can increase the service life simultaneously.
Its solution is: be provided with the material returning device inner chamber of upper and lower partition wall, in descending the partition wall place to be furnished with air distribution plate, it is made of metallic plate and last integrated poured refractory masses thereof, has heat resistance, not easy burn-out.This air distribution plate material returning device be divided into down, following two cavitys, cavity of resorption constitutes air compartment, is communicated with ajutage below the air compartment.On air distribution plate, be distributed with blast cap, and be evenly equipped with 10-30 aperture on the blast cap, and on the air distribution plate near the distribution density of down partition wall and refeed line one crosswind cap greater than air distribution plate on the blast cap distribution density of opposite side.The throat tube that is arranged in the cyclonic separation gatherer is connected with the cyclonic separation gatherer by the gripper shoe that is become by refractory material casting, and it can be high temperature resistant indeformable, makes feed separation be in optimum state.
When the high-temperature material flue gas stream that upwards rises when fluidisation in the combustion chamber enters the cyclonic separation gatherer, along its inwall rotation the larger particles material is separated, separated material falls into material returning device, give wind by ajutage, by aperture uniform on the blast cap, material has been boiled, enter the combustion chamber through refeed line and burn again, so constantly carry out circulating combustion, combustion rate can reach 97%.
The utility model since in the material returning device of material external circulating device, be provided with by metallic plate and on the air distribution plate that constitutes of integrated poured refractory masses, it is divided into upper and lower two cavitys to material returning device, cavity of resorption constitutes air compartment, is communicated with ajutage below the air compartment.On air distribution plate, be distributed with the different blast cap of density, be evenly equipped with aperture on the blast cap, and the uptake tube gripper shoe that connects throat tube and cyclonic separation gatherer is formed by refractory material casting, so it has higher heat resistance, long service life, and can make feed separation abundant, returning charge is effective, the material burning can reach desirable energy-saving effect fully.Simultaneously, the Nox discharge capacity is low, and desulfurization is easy, as long as when burning, suitably mix lime stone and get final product desulfurization, and can reduce the pollution to air.
Embodiment of the present utility model is described in detail in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of energy-saving external circulation fluidized bed boiler.
Fig. 2 is a vertical view of the present utility model.
In the accompanying drawing, one side is communicated with the material external circulating device that is made of cyclonic separation gatherer (12) and material returning device (10) in the combustion chamber.And be positioned at the uptake tube (13) on cyclonic separation gatherer (12) the inner chamber top that is built into by abrasive brick, by uptake tube gripper shoe (14) and the cyclonic separation gatherer (12) that forms by refractory material casting
Inwall connects.Shell is welded by general steel plate, and the material returning device (10) that inwall adopts abrasive brick to be built into is tightly connected through flange (11) and cyclone separator (12), and is communicated with the combustion chamber by refeed line (2).By steel plate (5) and go up the Lower Half that air distribution plate that integrated poured refractory masses (6) constitutes is positioned at material returning device (10), it is divided into upper and lower two cavitys to material returning device (10), cavity of resorption is air compartment (4), be communicated with ajutage (3) below air compartment (4), the last partition wall (9) and the following partition wall (8) that are built into by abrasive brick are positioned at epicoele.On air distribution plate, be distributed with blast cap (7), and be evenly equipped with 15 apertures on each blast cap (7), and on the air distribution plate near the blast cap distribution density of down partition wall (8) and refeed line (2) one sides greater than air distribution plate on the distribution density of opposite side blast cap.Ash releasing tube (1) passes air chamber (4) and is connected with air distribution plate, and is communicated with material returning device (10) epicoele.
Claims (2)
1, a kind of energy-saving external circulation fluidized bed boiler, in the left side of its floater the material external circulating device is housed, it is formed by connecting by cyclonic separation gatherer and material returning device, it is characterized in that in material returning device (10), being provided with the wind fabric swatch that constitutes by metallic plate and the last refractory masses of pouring into a mould thereof, it is divided into material returning device (10), following two cavitys, cavity of resorption is air compartment (4), be communicated with ajutage (3) below the air compartment (4), on air distribution plate, be distributed with blast cap (7), and being evenly equipped with aperture on the blast cap (7), the uptake tube (13) that is positioned at cyclonic separation gatherer (12) is connected with cyclonic separation gatherer (12) by the uptake tube gripper shoe (14) that is become by refractory material casting.
2, energy-saving external circulation fluidized bed boiler as claimed in claim 1 is characterized in that on the air distribution plate that near partition wall (8) and refeed line (2) one sides down, the distribution density of blast cap (7) is greater than the blast cap distribution density of opposite side on the air distribution plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94209975 CN2192807Y (en) | 1994-04-20 | 1994-04-20 | Energy-saving outer circulation fluidizing bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94209975 CN2192807Y (en) | 1994-04-20 | 1994-04-20 | Energy-saving outer circulation fluidizing bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2192807Y true CN2192807Y (en) | 1995-03-22 |
Family
ID=33827511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94209975 Expired - Lifetime CN2192807Y (en) | 1994-04-20 | 1994-04-20 | Energy-saving outer circulation fluidizing bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2192807Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318796C (en) * | 2004-07-26 | 2007-05-30 | 中国科学院工程热物理研究所<Del/> | Method for producing both gas and steam, and boiler of circulating fluid bed with pyrolysis vaporizer |
| WO2010149057A1 (en) * | 2009-06-24 | 2010-12-29 | 中国科学院工程热物理研究所 | U-shaped water-cooled stuff back-feeder |
| CN101672472B (en) * | 2009-08-28 | 2011-01-19 | 无锡海源重工股份有限公司 | Boiler space separating and feeding back device of industrial circulating fluidized bed boiler |
| CN102042590A (en) * | 2010-10-11 | 2011-05-04 | 无锡华光锅炉股份有限公司 | Square separator structure of circulating fluidized bed boiler |
-
1994
- 1994-04-20 CN CN 94209975 patent/CN2192807Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318796C (en) * | 2004-07-26 | 2007-05-30 | 中国科学院工程热物理研究所<Del/> | Method for producing both gas and steam, and boiler of circulating fluid bed with pyrolysis vaporizer |
| WO2010149057A1 (en) * | 2009-06-24 | 2010-12-29 | 中国科学院工程热物理研究所 | U-shaped water-cooled stuff back-feeder |
| CN101929672B (en) * | 2009-06-24 | 2012-10-24 | 中国科学院工程热物理研究所 | U-shaped water-cooling material returner |
| US9476585B2 (en) | 2009-06-24 | 2016-10-25 | Institute Of Engineering Thermophysics, Chinese Academy Of Sciences | Water-cooling U-valve |
| CN101672472B (en) * | 2009-08-28 | 2011-01-19 | 无锡海源重工股份有限公司 | Boiler space separating and feeding back device of industrial circulating fluidized bed boiler |
| CN102042590A (en) * | 2010-10-11 | 2011-05-04 | 无锡华光锅炉股份有限公司 | Square separator structure of circulating fluidized bed boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |