CN2463055Y - Cooling cyclone separator - Google Patents
Cooling cyclone separator Download PDFInfo
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- CN2463055Y CN2463055Y CN 01200946 CN01200946U CN2463055Y CN 2463055 Y CN2463055 Y CN 2463055Y CN 01200946 CN01200946 CN 01200946 CN 01200946 U CN01200946 U CN 01200946U CN 2463055 Y CN2463055 Y CN 2463055Y
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- separator
- wall pipe
- membrane wall
- cyclone separator
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Abstract
The utility model relates to a cooling cyclone separator which is used for a circulating fluidized bed boiler. The utility model is characterized in that based on an existing water-cooling square separator, a secondary separation region (region B) and primary separation regions (regions C and D) adopt more special cross section structures, a smooth elliptical inner wall surface is formed on the inner wall of each separator, the lower part of each separator adopts positive conical body structures which are symmetrically deposited along a central line of each separator, an outlet core tube of each separator adopts a cone structure, and the two separators are connected in parallel. High separating efficiency of separators can be achieved by the structure, and requirements of stable material circulation and material balance of a circulating fluidized bed boiler can be satisfied. The disposition of the boiler is more compact, and the utility model is suitable for the maximization of the circulating fluidized bed boiler.
Description
The utility model belongs to recirculating fluidized bed (CFB) boiler plant field, is specifically related to a kind of water-cooled and cold cooling type cyclone separator of vapour of CFBB.
In the prior art, CFBB adopts garden tubular cyclone separator, and its inner non-metallic refractory that adopts is mostly made, and this separator is bulky, and is heavy and be prone to inner coking.
For addressing the above problem, the cold cyclone separator of a kind of vapour has appearred again recently, be characterized in that forming the whirlwind tube with the cold wall of membrane type vapour replaces refractory material to bear high temperature, though this kind separator has been avoided the problems referred to above, but owing to make traditional whirlwind tube with the cold wall of vapour, its complex process is made difficulty, and can not finely cooperate with boiler, therefore be difficult in industrial generally employing.
For addressing the above problem, Tsing-Hua University in 1993 have applied for the water-cooled square cyclone separator (patent No. 93235842.X) of band accelerating sections, this separator still adopts fin panel casing to constitute, adopt square or even polygonal cross-section, increased by one at the smoke inlet place and formed the curved guide plate of accelerating sections with wall, the below is the collection ash awl section of oblique contraction, and inwall corner is filled to circular arc with polygon water-cooling wall or refractory material.Though this separator has overcome bulky, the heavy defective of traditional heat insulation-type separator, avoided water-cooling wall to make difficulty in the manufacturing that cylinder brings again.But with refractory material filling part still easily coking and coming off, the collection ash awl section of the oblique contraction in bottom deflects when making the inner swirling eddy of separator rotate to the bottom, a part of separated particle that gets off is entrainmented again by air-flow and flows out separator.Show by result of the test that in addition this separator is because the unreasonable resistance that causes of rotation section shape becomes big, particle quickens not enough, influences gas flow, makes separative efficiency can not reach optimum efficiency, the separating property instability.The actual cycle fluidized-bed combustion boiler adopts the practice of Water Cooled Square Cyclone device to show, does not cause boiler flyash carbon content higher owing to separative efficiency is good, directly influences boiler thermal output.
The purpose of this utility model provides a kind of compactness, cooling type cyclone separator that separative efficiency is high arranged.
This cooling type cyclone separator, comprise segregation section 10 and awl section 9, it is characterized in that being arranged in parallel as a whole by two identical separators of structure, each separator has a smoke inlet 2 and an exhanst gas outlet core pipe 8 at least, the shell of separator segregation section 10 and awl section 9 adopts full film type wall pipe cooling structure, and separator is arranged in parallel and adopts membrane wall pipe demarcation strip 5 to separate.
Described separator segregation section is interior along the flue gas direction of rotation, be furnished with smoke inlet district (A district) successively, inferior Disengagement zone (B district) and main separation zone (C, the D district), main separation zone (C, the D district) elliptical arc surface 4 of employing rounding off, the axial ratio of described oval cambered surface 4 is between 1～1.4, inferior Disengagement zone (B district) is furnished with membrane wall pipe deflector 1, make separator by membrane wall pipe deflector 1, back membrane wall pipe 3, oval cambered surface 4, membrane wall pipe demarcation strip 5, prepattern wall pipe 6 is formed oval segregation section 10, separator top 7 and the outlet core pipe 8 that is contained in the top are arranged on the top of segregation section, the degree of depth that the pyramidal structure that outlet core pipe 8 adopts along flue gas flow direction cross section flaring, outlet core pipe are inserted segregation section is 0.3～0.8 times of height of smoke inlet 2.Described membrane wall pipe awl section 9 is nearly right circular cone, does not have deviation with separator oval cross section major axis symmetric arrangement.The radian of described membrane wall pipe deflector 1 changes with the variation of boiler capacity.
The utlity model has following advantage:
1. the utility model is structurally more simple than the cold circular cyclone separator of vapour, and manufacturing cost is lower, and integration arranges compactly more, and arrangement convenience when being applied to CFBB can satisfy the arrangement requirement of the various type of furnaces.Compare with the water cooled square cyclone separator, the utility model adopts the conical outlet core pipe of the oval cambered surface of main separation zone, nearly right circular cone awl section and cross section flaring to can further improve separative efficiency, has overcome the problem of water cooled square cyclone separator separative efficiency (97%～98.5%) on the low side.
2. the boiler arranged respectively of the more single separator of manufacturing cost is low, and the shell of separator adopts water-cooled or vapour cold simultaneously, and the abrasionproof refractory material reduces, and refractory thickness shortens the start-up time of boiler less than traditional heat insulation-type cyclone separator.
3. to the boiler of different capabilities, the bending radius of membrane wall pipe deflector changes to some extent, to guarantee the separative efficiency of CFBB under the different capabilities;
4. two separators are arranged in parallel, and adopt membrane wall pipe demarcation strip to separate, and make separator arrangement compact more and make separative efficiency unaffected;
5. according to the capacity and the specific requirement of CFBB, the cooling medium that flows in the membrane wall pipe can adopt water-cooled or vapour cold.
6. utilize concrete structure of the present utility model, the separative efficiency of separator can make the runnability of the CFBB of the runnability of CFBB and traditional band heat insulation-type cyclone separator reach par.
Embodiment of the present utility model is referring to following each figure.
Fig. 1 is a stereogram of the present utility model;
Fig. 2 is a half sectional view of the present utility model;
Fig. 3 is that the H-H of Fig. 2 is to cutaway view;
Fig. 4 is that the K-K of Fig. 2 is to cutaway view;
Fig. 5 always schemes for the 75t/h CFBB that adopts water-cooled to be arranged in parallel separator;
Fig. 6 always schemes for adopting the cold 220t/h CFBB that is arranged in parallel separator of vapour.
Concrete structure of the present utility model is seen Fig. 1, Fig. 2, Fig. 3, Fig. 4, be made up of membrane wall pipe deflector 1, entrance 2, back membrane wall pipe 3, oval cambered surface 4, membrane wall pipe demarcation strip 5, prepattern wall pipe 6, separator top 7, conical outlet core pipe 8, membrane wall pipe awl section 9 etc., two water-cooleds or the cold separator of vapour are arranged in parallel Fig. 5, Fig. 6.
Be made up of the membrane wall pipe around the utility model segregation section, concrete structure is: the separator both sides are coated by oval cambered surface 4; The separator rear portion is coated by the membrane wall pipe deflector 1 and the back membrane wall pipe 3 in inferior Disengagement zone (B district), and two ends are connected with oval cambered surface 4; The separator front portion is coated by prepattern wall pipe 6, and wherein smoke inlet place (A district) becomes entrance 2 by the 6 part stretch bendings of prepattern wall pipe; Two separators are separated by membrane wall pipe demarcation strip 5; Separator top 7 is bent to form by back membrane wall pipe 3 and 1 prolongation of membrane wall pipe deflector, and the top also is connected sealing with oval cambered surface 4, prepattern wall pipe 6 and membrane wall pipe demarcation strip 5; Conical outlet core pipe 8 places in the perforate at separator top 7.
Membrane wall pipe awl section 9 is the right circular cone shape, is made up of oval cambered surface 4, membrane wall pipe demarcation strip 5, prepattern wall pipe 6, back membrane wall pipe 3 and membrane wall pipe deflector 1 extension downwards or bending.
Whole separator inside is laid with certain thickness wear heat-resistant material, and the primary and secondary Disengagement zone that wear heat-resistant material will and be put the formula separator constitutes oval cambered surface.
Basic principle of the present utility model is with conventional heat insulation-type cyclone separator.Owing to structurally adopt the oval cambered surface of main separation zone, make flow of flue gas of the present utility model near circular cyclone separator, thereby avoided water-cooled square cyclone separator residual rotation of producing of main separation zone (C district and D district) particularly on Qi Sijiao, thereby most of solid particle effectively separated at main separation zone (C, D district).Separator awl section 9 adopts the right circular cone shape, makes rotation and the separator axis basically identical of flue gas in the separator bottom, is entrainmented again into ascending air to avoid fine grained, helps fine grain separation.Therefore, separator separative efficiency of the present utility model can reach the level (99%～99.6%) of circular heat insulation-type cyclone separator, and is high by 1%～2% than the separative efficiency of square separator.
Below in conjunction with accompanying drawing embodiment of the present utility model is described further.
Embodiment one, when boiler capacity is not more than 130t/h, adopts water-cooled and puts the formula separator.
Fig. 5 always schemes for the 75t/h CFBB that adopts the water-cooling type cyclone separator.The separator 11 that is arranged in parallel is linked to be integral body with burner hearth 22 and back-end ductwork top 12.Concrete structure is:
Anterior 13 fin panel casings of separator awl section upwards are connected the common burner hearth Hou Qiang top of forming by three-way pipe with wall 14 fin panel casings behind the burner hearth, wall becomes entrance 15 at separator smoke inlet place by the part tube bending behind the burner hearth;
Separator deflector and back membrane wall pipe are upwards formed in separator awl section rear portion 16, and constitute afterbody upper flue front wall 17, and wall outlet collection case was formed separator top 18 after afterbody upper flue front wall bent forward and enters water-cooling wall;
The separator side wall is also formed the both walls of horizontal flue except that coating the separator both sides, and converges to same collection case 19 respectively with back-end ductwork both sides side wall;
Wall 20 bends forward and constitutes horizontal flue top 21 behind the back-end ductwork;
Separator membrane type wall pipe demarcation strip passes separator top 18 and horizontal flue top 21, and two separators are separated, and horizontal flue also is divided into left and right sides two parts.
Embodiment two, when boiler capacity during greater than 130t/h, adopt vapour cold and put the formula separator.
Fig. 6 always schemes for the 220t/h CFBB that adopts vapour cold mould cyclone separator, and the separator 23 and the back-end ductwork top 24 of parallel layout are linked to be integral body.Concrete structure is:
Separator awl section anterior 25 upwards constitutes separator prepattern wall pipe 26, and prepattern wall pipe 26 parts bend to entrance 27, and upwards constitute the horizontal flue front wall, and superheated steam enters horizontal flue front wall collection case 33;
Separator deflector and back membrane wall pipe are upwards formed in separator awl section rear portion 28, and formation afterbody upper flue front wall 29, afterbody upper flue front wall 29 parts bend forward forms separator top 30, and being connected the laggard horizontal flue front wall collection case 33 of going into prepattern wall pipe 26 by three-way pipe, a part directly upwards enters back-end ductwork front wall collection case 34;
Wall 32 entered ∏ shape back-end ductwork outlet collection case 35 after superheated steam constituted horizontal flue top 31 and back-end ductwork backward, downwards from horizontal flue front wall collection case 33.
The separator side wall is also formed the both walls of horizontal flue except that coating the separator both sides, go forward side by side into horizontal flue side wall outlet collection case 36;
Separator membrane type wall pipe demarcation strip passes separator top 30 and horizontal flue top 31 enters dividing wall outlet collection case 37, and two separators are separated, and horizontal flue also is divided into left and right sides two parts.Back-end ductwork front wall collection case 34, horizontal flue side wall outlet collection case 36, dividing wall outlet collection case 37 are combined into integral body with back-end ductwork side wall inlet collection case 38, and superheated steam constitutes the back-end ductwork side wall downwards and enters ∏ shape back-end ductwork outlet collection case 35 by back-end ductwork side wall inlet collection case 38;
Claims (7)
1. cooling type cyclone separator, comprise segregation section (10) and awl section (9), it is characterized in that being arranged in parallel as a whole by two identical separators of structure, each separator has a smoke inlet (2) and an exhanst gas outlet core pipe (8) at least, the inner full film type wall pipe cooling structure that adopts of separator segregation section (10) and awl section (9), separator is arranged in parallel and adopts membrane wall pipe demarcation strip (5) to separate.
2. cyclone separator according to claim 1, it is characterized in that in the said separator segregation section along the flue gas direction of rotation, be furnished with smoke inlet district (A district) successively, inferior Disengagement zone (B district) and main separation zone (C, the D district), main separation zone (C, the D district) elliptical arc surface (4) of employing rounding off, inferior Disengagement zone (B district) is furnished with membrane wall pipe deflector (1), make separator by membrane wall pipe deflector (1), back membrane wall pipe (3), oval cambered surface (4), membrane wall pipe demarcation strip (5), prepattern wall pipe (6) is formed oval segregation section (10), separator top (7) is arranged on the top of segregation section and be contained in the outlet core pipe (8) at top.
3. cyclone separator according to claim 2, the axial ratio that it is characterized in that said oval cambered surface (4) is between 1～1.4.
4. cyclone separator according to claim 1 is characterized in that membrane wall pipe awl section (9) is nearly right circular cone, does not have deviation with separator oval cross section major axis symmetric arrangement.
5. cyclone separator according to claim 1 is characterized in that exporting the degree of depth that core pipe (8) adopts pyramidal structure along flue gas flow direction cross section flaring, outlet core pipe (8) to insert segregation section and is 0.3～0.8 times of height of smoke inlet (2).
6. cyclone separator according to claim 2, the radian that it is characterized in that said membrane wall pipe deflector (1) changes with the variation of boiler capacity.
7. cyclone separator according to claim 1 and 2, the cooling medium that it is characterized in that flowing in the said membrane wall pipe can adopt water-cooled or vapour cold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01200946 CN2463055Y (en) | 2001-01-10 | 2001-01-10 | Cooling cyclone separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01200946 CN2463055Y (en) | 2001-01-10 | 2001-01-10 | Cooling cyclone separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2463055Y true CN2463055Y (en) | 2001-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01200946 Expired - Fee Related CN2463055Y (en) | 2001-01-10 | 2001-01-10 | Cooling cyclone separator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100574891C (en) * | 2008-04-25 | 2009-12-30 | 中冶京诚工程技术有限公司 | High-temperature cyclone dust extractor water cooling abrasion-proof flow guiding device |
| 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 |
| CN107975783A (en) * | 2017-11-28 | 2018-05-01 | 湖南长宏南雁锅炉修理安装有限公司 | The ciculation fluidized steam boiler of anthracite |
-
2001
- 2001-01-10 CN CN 01200946 patent/CN2463055Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100574891C (en) * | 2008-04-25 | 2009-12-30 | 中冶京诚工程技术有限公司 | High-temperature cyclone dust extractor water cooling abrasion-proof flow guiding device |
| 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 |
| CN107975783A (en) * | 2017-11-28 | 2018-05-01 | 湖南长宏南雁锅炉修理安装有限公司 | The ciculation fluidized steam boiler of anthracite |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |