CN102240614A - Biomass flue gas cyclone separator - Google Patents
Biomass flue gas cyclone separator Download PDFInfo
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- CN102240614A CN102240614A CN2011101079271A CN201110107927A CN102240614A CN 102240614 A CN102240614 A CN 102240614A CN 2011101079271 A CN2011101079271 A CN 2011101079271A CN 201110107927 A CN201110107927 A CN 201110107927A CN 102240614 A CN102240614 A CN 102240614A
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- whirlwind tube
- cyclone separator
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Abstract
The invention discloses a biomass flue gas cyclone separator. A cylindrical cyclone cylinder main body comprises a three-stage cyclone cylinder, and the side wall of an air inlet of the cyclone cylinder is tangent to the side wall of a cylinder body of a first stage cyclone cylinder. A structure of the multi-stage cyclone cylinder which is arranged allows materials to be pulverized after being subjected to continuous multilayer separation in cyclic processes, and minimal materials to be separated, so the cyclone separator of the invention has a higher efficiency than routine cyclone separators, allows the cycle number of the materials in a boiler to be increased, contributes to the burning-out of fuels, and allows the combustion efficiency of the boiler to be improved, the feeding amount of the cyclic materials and the slag removal amount of the boiler to be reduced, and the workload of firemen to be reduced.
Description
Technical field
The invention belongs to the separator field, specifically relate to a kind of whirlwind separator that is used for isolating the solid circulation medium from the living beings flue gas.
Background technology
In steam boiler system, from the high-temperature flue gas that biomass circulating fluid pool furnace thorax comes out, contain solid circulation medium and uncombusted biomass fuel.For solid circulation medium and uncombusted biomass fuel are separated from flue gas, and in addition recycling, generally can cyclone separator being set in the outlet of biomass circulating fluid pool furnace thorax, to give to separate the back recycling.And the whirlwind tube of existing cyclone separator has only one-level, and by solid circulation medium in the flue gas and uncombusted biomass fuel are failed thoroughly to separate, utilization rate is lower, and output flue gas still have impurity, can cause damage to next stage equipment.
Summary of the invention
In order to solve the problem that prior art exists, the invention provides a kind of good separating effect, can improve the cyclone separator of solid circulation medium and uncombusted biomass fuel circulating combustion utilization rate.
In order to realize above purpose, technical scheme of the present invention is as follows: a kind of living beings flue gas cyclone separator, comprise cylindrical shape whirlwind tube main body, described cylindrical shape whirlwind tube main body is made of three grades whirlwind tube, and the sidewall of the cylindrical shell of the air inlet sidewall of described whirlwind tube and first order whirlwind tube is tangent.
Further, the internal diameter of described each grade whirlwind tube from top to bottom step by step ladder dwindle.
The inwall of described each grade whirlwind tube is made of cylindrical section and conical section.
The side of described first order whirlwind tube has air inlet, has air outlet above it, and described final stage whirlwind tube has discharging opening.
The discharging opening of described final stage whirlwind tube connects material storage tube.
Described material storage tube connects and the transitional cylinder of its formation greater than 90 degree angles.
The angle position of described material storage tube and transitional cylinder has a baffle plate, and this baffle plate and passage form circuitous folded structure, and described final stage whirlwind tube is connected the ripple type expansion joint with the junction of material storage tube, and described transitional cylinder is connected with the returning charge tube of burner hearth by the concertina type expansion joint.
The lower end of the discharging opening of described final stage whirlwind tube or the angle position of material storage tube and transitional cylinder is provided with discharge box.
The center line of described whirlwind tube main body is perpendicular to the ground.
Compared with prior art, the present invention is owing to be provided with multistage whirlwind barrel structure, make material in cyclic process, be separated the back efflorescence by continuous multilayer, can come out more small feed separation,, and increase the cycle-index of material in boiler therefore than conventional cyclone separator efficient height, the after-flame that helps fuel, improve the efficiency of combustion of boiler, reduced the amount of feeding of recycle stock and the bed drain purge of boiler, alleviated fireman's workload.
Description of drawings
Fig. 1 is the structural representation of cyclone separator of the present invention;
Fig. 2 is the structural representation of the porch of cyclone separator.
Below, with accompanying drawing the present invention further is described in detail in conjunction with specific embodiments.
The specific embodiment
As shown in Figure 1, cyclone separator of the present invention is made up of whirlwind tube main body, material storage tube 4, transitional cylinder 5 and returning charge tube 6.Whirlwind tube main body is made of first order whirlwind tube 1, second level whirlwind tube 2 and final stage whirlwind tube 3 these three grades of whirlwind tubes, and the inwall of every grade of whirlwind tube is cylindrical shape.One side of first order whirlwind tube 1 offers air inlet, and this air inlet is communicated with the outlet of recirculating fluidized bed 14 burner hearths upper end, and the upper end of first order whirlwind tube 1 sets out the air port.Near air inlet, open manhole door, conveniently entered maintenance.The lower end of final stage whirlwind tube 3 is as discharging opening.Air inlet and first order whirlwind tube 1 tangent (as shown in Figure 2) promptly are that the sidewall of air inlet is vertical tangent with the sidewall of first order whirlwind tube 1, and flue gas tangentially enters the circle tube inner wall of first order whirlwind tube 1 and forms whirlwind from air inlet.Connect second level whirlwind tube 2 and final stage whirlwind tube 3 step by step along first order whirlwind tube from top to bottom.The whirlwind tube of each grade is by cylindrical section and the top-down formation of conical section.The terminal cylindrical section that connects second level whirlwind tube of the conical section of first order whirlwind tube 1, the terminal cylindrical section that connects final stage whirlwind tube of the conical section of second level whirlwind tube 2, three grades of its interior diameters of whirlwind tube connection back have formed ladder step by step and have dwindled structure.Slick and sly subsidence curve structure is arranged in the whirlwind tube main body one, and bootable cigarette wind smoothly sinks to rotating.Whirlwind tube main body is formed (with reference to figure 2) by three-decker, and the heat-insulation layer 12 in outer field shell 11, intermediate layer and the scuff-resistant coating 13 of internal layer are arranged.Whole separator inside has all been built insulating brick and has been stamped wear-resisting pouring material, not only is incubated but also wear-resisting, improves the thermal efficiency of boiler and the service life of separator.The center line of whirlwind tube main body is perpendicular to the ground, and is promptly parallel with the center line of upright recirculating fluidized bed 14.Certainly, the center line of whirlwind tube main body also can tilt.Final stage whirlwind tube 3 connects material storage tubes 4 downwards, is used to deposit solid circulation medium and uncombusted biomass fuel after the cyclonic separation.Material storage tube 4 connects the transitional cylinder 5 of inclination, and transitional cylinder 5 is 135 ° with the angle of material storage tube 4.Material storage tube 4 has a baffle plate 8 with the angle position of transitional cylinder 5, and baffle plate 8 forms circuitous folded structure with passage.Lower end, circuitous folded structure place also is provided with returning charge case 10, and returning charge case 10 is provided with peep hole.Transitional cylinder 5 connects returning charge tube 6, and returning charge tube 6 is communicated with the inlet of recirculating fluidized bed 14.Circuitous folded structure helps stoping excessive solid circulation medium and uncombusted biomass fuel to enter in the burner hearth, and when producing excessive solid circulation medium and uncombusted biomass fuel, he uses separately to collect back output by returning charge case 10.Expansion for the absorption and separation device produces in hot operation is connected ripple type expansion joint 7 at final stage whirlwind tube 3 with the junction of material storage tube, and transitional cylinder 5 is connected concertina type expansion joint 9 with the junction of returning charge tube 6.
Operation principle of the present invention is as follows: at first, biomass granule fuel (BMF) is sent into Boiling Combustion in the burner hearth of recirculating fluidized bed by front-furnace feeding mechanism, produce the living beings flue gas, less high-temp solid circulatory mediator and float to float with flue gas at uncombusted fuel (following general designation material) and enter first order whirlwind tube to the outlet of upper furnace and with flue gas, flue gas is the high speed rotational flow in first order whirlwind cylinder, and material got rid of to the peripheral of air-flow and along cylindrical wall and cones wall to sink (thicker material directly sinks down in the material storage tube), pure flue gas stream then concentrates on the center of air-flow and upwards exports from air outlet in the shape of a spiral; Then, tangential velocity increases owing to the dwindling of conic tube position radius of first order whirlwind circle, remaining flue gas inertia accelerated motion in the shape of a spiral is past down to second level whirlwind tube (the cylindrical section diameter of second level rounding tube is consistent with the diameter of first order whirlwind tube cone outlet), because of acceleration through conic tube, the velocity of flue gas of second level whirlwind tube is higher, the material concentration of flue gas relatively also increases, therefore can carry out the cyclonic separation second time to remaining flue gas, and tiny material (herein main dust granules) separated, and pure flue gas continues on the screw; At last, under the effect of the conic tube of second level whirlwind tube, continue spiral through the remaining flue gas after twice cyclonic separation and quicken to sink down into final stage whirlwind tube, the same separation for the third time flue gas is carried out cyclonic separation with above-mentioned principle, material (herein mainly being the micronic dust particle) enters accumulator along passage after finally dropping down onto at the bottom of the circular cone tube of final stage whirlwind tube, and the material operation that cyclonic separation goes out in the flue gas is finished.Material after the separation is sent back in the burner hearth of recirculating fluidized bed through transitional cylinder and returning charge tube by the returning charge wind of returning charge case, burns away or circulates in stove as the heat conduction carrier.Material all can be separated the back efflorescence by the cyclone separator continuous multilayer in cyclic process, can come out more small feed separation,, and increase the cycle-index of material in boiler therefore than conventional cyclone separator efficient height, the after-flame that helps fuel, the efficiency of combustion of raising boiler.Reduce the amount of feeding of recycle stock and the bed drain purge of boiler, alleviated fireman's workload.
Claims (10)
1. a living beings flue gas cyclone separator comprises cylindrical shape whirlwind tube main body, it is characterized in that: described cylindrical shape whirlwind tube main body is made of the whirlwind tube of two-stage at least, and the sidewall of the cylindrical shell of the air inlet sidewall of described whirlwind tube and first order whirlwind tube is tangent.
2. cyclone separator according to claim 1 is characterized in that, described cylindrical shape whirlwind tube main body is made of three grades whirlwind tube.
3. cyclone separator according to claim 2 is characterized in that, the internal diameter of described each grade whirlwind tube from top to bottom step by step ladder dwindle.
4. cyclone separator according to claim 3 is characterized in that, the inwall of described each grade whirlwind tube is made of cylindrical section and conical section.
5. cyclone separator according to claim 4 is characterized in that, the side of described first order whirlwind tube has air inlet, has air outlet above it, and described final stage whirlwind tube has discharging opening.
6. cyclone separator according to claim 1 or 5 is characterized in that, the discharging opening of described final stage whirlwind tube connects material storage tube.
7. cyclone separator according to claim 6 is characterized in that, described material storage tube connects and the transitional cylinder of its formation greater than 90 degree angles.
8. cyclone separator according to claim 7, it is characterized in that, the angle position of described material storage tube and transitional cylinder has a baffle plate, this baffle plate and passage form circuitous folded structure, described final stage whirlwind tube is connected the ripple type expansion joint with the junction of material storage tube, and described transitional cylinder is connected with the returning charge tube of burner hearth by the concertina type expansion joint.
9. cyclone separator according to claim 8 is characterized in that, the lower end of the discharging opening of described final stage whirlwind tube or the angle position of material storage tube and transitional cylinder is provided with discharge box.
10. cyclone separator according to claim 1 is characterized in that, the center line of described whirlwind tube main body is perpendicular to the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101079271A CN102240614A (en) | 2011-04-28 | 2011-04-28 | Biomass flue gas cyclone separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101079271A CN102240614A (en) | 2011-04-28 | 2011-04-28 | Biomass flue gas cyclone separator |
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| Publication Number | Publication Date |
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| CN102240614A true CN102240614A (en) | 2011-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101079271A Pending CN102240614A (en) | 2011-04-28 | 2011-04-28 | Biomass flue gas cyclone separator |
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| CN (1) | CN102240614A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433158A (en) * | 2013-09-23 | 2013-12-11 | 山东佐田氏生物科技有限公司 | Separation device for light-weight impurity in solid particles |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003240209A (en) * | 2002-02-08 | 2003-08-27 | Jfe Engineering Kk | Circulating fluidized bed furnace and circulating fluidized bed boiler |
| JP2005300077A (en) * | 2004-04-14 | 2005-10-27 | Mitsubishi Heavy Ind Ltd | Circulating fluidized bed furnace |
| CN1817437A (en) * | 2004-10-22 | 2006-08-16 | 阿尔斯通技术有限公司 | Method and device for adjustment solid cycle quantity of circulating fluidized bed reaction system |
| CN2888281Y (en) * | 2006-04-30 | 2007-04-11 | 唐山信德锅炉集团有限公司 | Middle temperature separation circulating fluidized bed hot water boiler |
| CN201799332U (en) * | 2010-04-07 | 2011-04-20 | 陈玉珍 | Cyclone dust collector with cyclone |
| CN202123010U (en) * | 2011-04-28 | 2012-01-25 | 广州迪森热能技术股份有限公司 | Biomass flue gas cyclone separator |
-
2011
- 2011-04-28 CN CN2011101079271A patent/CN102240614A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003240209A (en) * | 2002-02-08 | 2003-08-27 | Jfe Engineering Kk | Circulating fluidized bed furnace and circulating fluidized bed boiler |
| JP2005300077A (en) * | 2004-04-14 | 2005-10-27 | Mitsubishi Heavy Ind Ltd | Circulating fluidized bed furnace |
| CN1817437A (en) * | 2004-10-22 | 2006-08-16 | 阿尔斯通技术有限公司 | Method and device for adjustment solid cycle quantity of circulating fluidized bed reaction system |
| CN2888281Y (en) * | 2006-04-30 | 2007-04-11 | 唐山信德锅炉集团有限公司 | Middle temperature separation circulating fluidized bed hot water boiler |
| CN201799332U (en) * | 2010-04-07 | 2011-04-20 | 陈玉珍 | Cyclone dust collector with cyclone |
| CN202123010U (en) * | 2011-04-28 | 2012-01-25 | 广州迪森热能技术股份有限公司 | Biomass flue gas cyclone separator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433158A (en) * | 2013-09-23 | 2013-12-11 | 山东佐田氏生物科技有限公司 | Separation device for light-weight impurity in solid particles |
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Application publication date: 20111116 |