CN102393013A - Circulating fluidized bed boiler separator - Google Patents
Circulating fluidized bed boiler separator Download PDFInfo
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- CN102393013A CN102393013A CN2010106028892A CN201010602889A CN102393013A CN 102393013 A CN102393013 A CN 102393013A CN 2010106028892 A CN2010106028892 A CN 2010106028892A CN 201010602889 A CN201010602889 A CN 201010602889A CN 102393013 A CN102393013 A CN 102393013A
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- separator
- wear
- fluidized bed
- gas approach
- circulating fluidized
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Abstract
The invention provides a circulating fluidized bed boiler separator. Wear-resistant materials are poured at the inner wall of an inlet flue of the separator and in a target area; the wear-resistant materials are poured to form a corrugated surface; and a downward inclination angle is arranged at a smoke gas inlet of the separator. According to the invention, the wear of the separator can be effectively reduced and the separating efficiency can be enhanced.
Description
Technical field
The present invention relates to a kind of CFBB separator.
Background technology
Combustion technology of circulating fluidized derives from the catalytic cracking of chemical engineering industry the earliest; Its objective is that the control ignition temperature makes catalyst interval in the reaction temperature of the best; Improve the utilization rate of catalyst; Strange (Lurgi) company in Germany Shandong uses coal-burning boiler to this technology at first, has developed the industrial burning in circulating fluid bed boiler technology that goes up extensively utilization.
The main feature of recirculating fluidized bed (CFB) boiler is that boiler furnace contains a large amount of materials; Materials a large amount of in combustion process are carried to upper furnace by flue gas; Through being arranged in the separator of furnace outlet; Material and flue gas are separated; And through on-mechanical formula feeding-back valve with loopback of material to fire box, when the combustion chamber adds fuel continually, adding desulfurizing agent (like lime stone etc.), because fuel and desulfurizing agent circulating combustion repeatedly in the closed circuit of fire box, separator composition; Usually control burning in circulating fluid bed boiler room temperature makes this device have higher efficiency of combustion and higher sorbent utilization 840 ℃～900 ℃ such temperature ranges that help reactive desulfurizing agent most.
The separator of recirculating fluidized bed is one of critical component of recirculating fluidized bed; It mainly acts on is that a large amount of high-temperature solid materials are separated from air-flow; Send the combustion chamber back to,, guarantee that fuel and desulfurizing agent repeatedly circulate, burn repeatedly and react to keep the fast fluidized condition of combustion chamber.Like this, just might reach desirable efficiency of combustion and desulfuration efficiency.Therefore, the performance of recirculating fluidized bed separator will directly influence master-plan, system layout and the boiler operatiopn performance of whole circulation fluidized-bed combustion boiler.In view of current heat-insulating separator inlet flue both sides and target area serious wear; Wearing and tearing mainly are because due to the eddy current that flue gas produces when getting into gas approach; Because flue gas flow rate is very big here, the generation of eddy current is almost inevitable, and is bigger to the boiler reliability effect; In addition, the operating mode of boiler oepration at full load carries out because the design of separator is based on, so efficiency separator has only when boiler is at full capacity and just can reach design efficiency; Under the electricity consumption form at home; The actual operating mode that can not be in heavy-duty service for a long time of most of CFB engineering, this causes the efficient reality of separator far can not reach designing requirement, and this can be found out from present CFB boiler flyash carbon content; When using anthracite, unburned carbon in flue dust even can reach more than 10%.For reducing the CFB boiler flyash carbon content better, need further to improve separator separates efficient, make and keep good grey balance, guarantee good heat transfer and the reasonably distribution of combustion share in the stove.
Summary of the invention
A kind of CFBB separator provided by the invention can effectively reduce the wearing and tearing of separator, improves separative efficiency.
In order to achieve the above object, the present invention provides a kind of CFBB separator, and this separator comprises central tube and the gas approach that is connected with central tube;
The inwall and the target area of gas approach are cast with wear-resistant material, and described wear-resistant material is cast for the surface of corrugated, and the gas approach place of gas approach and central tube link position is provided with downward inclination alpha.
The span of described inclination alpha is 0 °～50 °.
The present invention has the following advantages:
1, gas approach both sides and target area wear-resistant material are poured into corrugated after, can effectively reduce the generation of eddy current,, the wearing and tearing that eddy current is caused significantly reduce.
2, gas approach both sides and target area wear-resistant material are poured into corrugated after, reduced flue gas and flue surface contact area, wearing and tearing are reduced, make the volume of wear-resistant material obtain reduction simultaneously, reality has reduced cost.
3, the separator inlet flue is increased a downward inclination angle, make the flue gas that gets into separator increase a downward vector, improved the flow velocity and the flow process of flue gas, thereby improved separative efficiency.
Description of drawings
Fig. 1 is the vertical view of a kind of CFBB separator provided by the invention.
Fig. 2 is the front view of a kind of CFBB separator provided by the invention.
The specific embodiment
Following according to Fig. 1 and Fig. 2, specify preferred embodiment of the present invention:
As shown in Figure 1, the present invention provides a kind of CFBB separator, and this separator comprises central tube 1 and the gas approach 2 that is connected with central tube 1.
The inwall 201 and the target area 202 of gas approach 2 are cast with wear-resistant material, and described wear-resistant material is cast for the surface of corrugated, and gas approach 2 is provided with downward inclination alpha with gas approach 203 places of central tube 1 link position.
As shown in Figure 2, the span of described inclination alpha is 0 °～50 °.
Although content of the present invention has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be conspicuous.Therefore, protection scope of the present invention should be limited appended claim.
Claims (2)
1. CFBB separator, this separator comprises central tube (1) and the gas approach (2) that is connected with central tube (1);
It is characterized in that,
Inwall (201) and target area (202) of gas approach (2) are cast with wear-resistant material, and described wear-resistant material is cast for the surface of corrugated, and gas approach (2) locates to be provided with downward inclination alpha with the gas approach (203) of central tube (1) link position.
2. CFBB separator as claimed in claim 1 is characterized in that, the span of described inclination alpha is 0 °～50 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106028892A CN102393013A (en) | 2010-12-24 | 2010-12-24 | Circulating fluidized bed boiler separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106028892A CN102393013A (en) | 2010-12-24 | 2010-12-24 | Circulating fluidized bed boiler separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102393013A true CN102393013A (en) | 2012-03-28 |
Family
ID=45860372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106028892A Pending CN102393013A (en) | 2010-12-24 | 2010-12-24 | Circulating fluidized bed boiler separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102393013A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398375A (en) * | 2013-07-01 | 2013-11-20 | 中国华能集团清洁能源技术研究院有限公司 | Cyclone separator with wear-resistant target section and guiding device for circulating fluidized bed boiler |
| CN108317508A (en) * | 2017-12-27 | 2018-07-24 | 北方华锦化学工业股份有限公司 | A kind of cyclone separator of circulating fluidized bed boiler renovation and improving method |
| CN108826283A (en) * | 2018-08-15 | 2018-11-16 | 黑龙江福恩德瑞能源科技有限公司 | The side-blown wind system of recirculating fluidized bed returning charge and remodeling method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1000109A1 (en) * | 1981-09-25 | 1983-02-28 | Всесоюзный научно-исследовательский институт нерудных строительных материалов и гидромеханизации | Sand packing of hydraulic cyclone for classifying granular products by size content |
| CN1106883C (en) * | 1999-01-18 | 2003-04-30 | Abb阿尔斯托姆燃烧动力公司 | Air inlet pipe allowing flue gas entering cyclone separator |
| CN2698454Y (en) * | 2004-05-27 | 2005-05-11 | 李蔓球 | Wear-proof high efficiency cyclone separator for fly ash separation |
| CN2936439Y (en) * | 2006-04-26 | 2007-08-22 | 哈尔滨锅炉厂有限责任公司 | Bias high-efficiency cyclone separator |
-
2010
- 2010-12-24 CN CN2010106028892A patent/CN102393013A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1000109A1 (en) * | 1981-09-25 | 1983-02-28 | Всесоюзный научно-исследовательский институт нерудных строительных материалов и гидромеханизации | Sand packing of hydraulic cyclone for classifying granular products by size content |
| CN1106883C (en) * | 1999-01-18 | 2003-04-30 | Abb阿尔斯托姆燃烧动力公司 | Air inlet pipe allowing flue gas entering cyclone separator |
| CN2698454Y (en) * | 2004-05-27 | 2005-05-11 | 李蔓球 | Wear-proof high efficiency cyclone separator for fly ash separation |
| CN2936439Y (en) * | 2006-04-26 | 2007-08-22 | 哈尔滨锅炉厂有限责任公司 | Bias high-efficiency cyclone separator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398375A (en) * | 2013-07-01 | 2013-11-20 | 中国华能集团清洁能源技术研究院有限公司 | Cyclone separator with wear-resistant target section and guiding device for circulating fluidized bed boiler |
| CN108317508A (en) * | 2017-12-27 | 2018-07-24 | 北方华锦化学工业股份有限公司 | A kind of cyclone separator of circulating fluidized bed boiler renovation and improving method |
| CN108826283A (en) * | 2018-08-15 | 2018-11-16 | 黑龙江福恩德瑞能源科技有限公司 | The side-blown wind system of recirculating fluidized bed returning charge and remodeling method |
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Application publication date: 20120328 |