CN110947249B - Expanding type low-resistance high-efficiency cyclone cylinder - Google Patents
Expanding type low-resistance high-efficiency cyclone cylinder Download PDFInfo
- Publication number
- CN110947249B CN110947249B CN201911135305.2A CN201911135305A CN110947249B CN 110947249 B CN110947249 B CN 110947249B CN 201911135305 A CN201911135305 A CN 201911135305A CN 110947249 B CN110947249 B CN 110947249B
- Authority
- CN
- China
- Prior art keywords
- section
- cylinder
- volute
- diameter
- expanded
- 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.)
- Active
Links
- 238000000926 separation method Methods 0.000 abstract description 11
- 239000004568 cement Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 19
- 239000000463 material Substances 0.000 description 15
- 239000000428 dust Substances 0.000 description 10
- 239000007787 solid Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000005526 cement kiln firing Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cyclones (AREA)
Abstract
The invention relates to novel dry cement clinker production equipment, in particular to an expanded diameter type low-resistance efficient cyclone which comprises a volute with an air inlet, a cylinder section, an expanded diameter section and a cone section, wherein the cylinder section, the expanded diameter section and the cone section are arranged below the volute in sequence, the inner cylinder is arranged in the center of a wrap of the volute, the upper end of the inner cylinder extends out of the volute and is provided with an air outlet, a blanking opening is arranged below the cone section, the expanded diameter section comprises an expanded diameter section upper wall connected with the lower end of the cylinder section and an expanded diameter section cylinder connected with the upper end of the cone section, the inner diameter of the expanded diameter section cylinder is larger than the inner diameter of the cylinder section, the height of the expanded diameter section cylinder is at least 0.1 time of the inner diameter of the cylinder section, and the included angle between the upper wall of the expanded diameter section and the horizontal plane is 0-70 degrees and is not 0 degrees. The expanding type low-resistance high-efficiency cyclone adopts a unique cylinder expanding structure, the separation efficiency is improved by 1-3% compared with that of the traditional cyclone, and the pressure loss coefficient is reduced by 15-30% compared with that of the traditional cyclone.
Description
Technical Field
The invention relates to novel dry cement clinker production equipment, in particular to an expanded diameter type low-resistance efficient cyclone cylinder.
Background
The cement production process is a high-energy consumption process, and the technical problems to be solved in the development of the current cement industry are energy conservation, consumption reduction, environmental protection, cement quality improvement and labor productivity improvement, and a sustainable development road is followed. The clinker firing part of the novel dry cement kiln firing technology mainly comprises a pre-decomposition system (a preheater of a multi-stage cyclone), an off-kiln pre-decomposition technology (a decomposing furnace), a clinker calcination technology (a rotary kiln) and a clinker cooling technology (a cooler).
The clinker production process is that the material prepared according to a certain proportion is fed from the top of the preheater, preheated by the cyclone preheater, enters the decomposing furnace, is decomposed and then enters the rotary kiln for calcination, and then enters the grate cooler for cooling, and finally the needed clinker is obtained.
The key point of the research of the invention is to reduce the power consumption and heat consumption of the cement sintering system, to reduce the material internal circulation and material external circulation of the cement sintering system, to improve the heat exchange efficiency of the system and to reduce the resistance loss. In the traditional cyclone design process, the gas-solid separation efficiency is mainly improved by increasing the wind speed, but the method can raise the wind speed and simultaneously cause the rising of the system resistance, thereby increasing the energy consumption of the system. Therefore, if the cyclone structure can be optimized in terms of the structural form of the cyclone, the efficiency of separating materials is improved, will have great significance for energy saving and consumption reduction in the cement production process.
Disclosure of Invention
Based on the state of the art, the invention utilizes CFD model test to deeply analyze the characteristics of gas movement in the cyclone, and reduces the system resistance and improves the gas-solid separation efficiency by optimizing the structural form of the cyclone.
In order to achieve the aim, the invention provides an expanded-diameter type low-resistance efficient cyclone which comprises a volute with an air inlet, a cylinder section, an expanded-diameter section and a cone section, wherein the cylinder section, the expanded-diameter section and the cone section are arranged below the volute in sequence from top to bottom, the inner cylinder is arranged in the center of a wrap of the volute, the upper end of the inner cylinder extends out of the volute and is provided with an air outlet, a blanking opening is arranged below the cone section, the expanded-diameter section comprises an expanded-diameter section upper wall connected with the lower end of the cylinder section and an expanded-diameter section cylinder connected with the upper end of the cone section, the inner diameter d2 of the expanded-diameter section cylinder is larger than the inner diameter d1 of the cylinder section, the height h5 of the expanded-diameter section cylinder is at least 0.1 times the inner diameter d1 of the cylinder section, and an included angle beta between the upper wall of the expanded-diameter section and a horizontal plane is 0-70 degrees and is not 0 degrees.
Preferably, the inner diameter d2 of the expanding section cylinder is 1.1-1.3 times of the inner diameter d1 of the cylinder section, the height h5 of the expanding section cylinder is 0.1-1 times of the inner diameter d1 of the cylinder section, and the total length h of the upper end of the volute from the lower end of the cone section is 2.5-3.5 times of the inner diameter d1 of the cylinder section.
Preferably, the included angle beta between the upper wall of the expanding section and the horizontal plane is 35-60 degrees.
Preferably, the inner diameter d0 of the inner cylinder is 0.45-0.55 times of the inner diameter d1 of the cylinder section.
Preferably, the length h1 of the top of the volute from the lower end of the inner cylinder is 0.95-1.15 times the height h2 of the volute.
Preferably, the inner diameter d4 of the feed opening is 0.1-0.3 times the inner diameter d1 of the cylindrical section.
Preferably, the included angle alpha between the outer wall of the cone section and the horizontal plane is 55-70 degrees.
Preferably, the air inlet is of a pentagonal structure formed by cutting corners and rectangular, and the width of the air inlet is 1250mm-1750mm.
Preferably, the inner diameter d1 of the cylindrical section is 350 mm to 5500mm.
Preferably, the wrap angle of the scroll is 240 ° -300 °.
In the invention, the expanding section comprises an expanding section upper wall connected with the lower end of the cylinder section and an expanding section column body connected with the upper end of the cone section, wherein the inner diameter d2 of the expanding section column body is larger than the inner diameter d1 of the cylinder section, the height h5 of the expanding section column body is at least 0.1 time of the inner diameter d1 of the cylinder section, and the included angle beta between the expanding section upper wall and the horizontal plane is between 0-70 degrees and is not 0 degrees. The cyclone cylinder is mainly characterized in that a unique cylinder expanding structure, namely an expanding section, is designed below a cylinder section, the expanding of the expanding section is beneficial to reducing wind speed and accelerating gas-solid separation, so that materials are collected quickly, the expanding of the expanding section reduces the gas 'turn-back' distance and reduces resistance loss, and the included angle beta between the upper wall of the expanding section and the horizontal plane is between 0-70 degrees and is not 0 degrees, namely, the cylinder expanding adopts transition diameter variation, so that the influence on a body gas flow field and a material flow field is reduced.
According to the analysis, the diameter-expanding type low-resistance high-efficiency cyclone cylinder adopts a diameter-expanding structure in the process of rotating materials and gas, so that the wind speed is reduced on the basis of cyclone dust collection, gas and solid are separated again, the dust collection efficiency is improved, in addition, the gas kinetic energy can be further reduced, and the cyclone cylinder is discharged under the condition of small negative pressure (suction force) of the upper cyclone cylinder. The expanding type low-resistance high-efficiency cyclone adopts a unique cylinder expanding structure, the separation efficiency is improved by 1-3% compared with that of the traditional cyclone, and the pressure loss coefficient is reduced by 15-30% compared with that of the traditional cyclone. The cyclone barrel is applied to a kiln tail pre-decomposition system of a clinker production line, so that the gas-solid separation efficiency is effectively improved, the resistance loss in the cyclone barrel is reduced, and the resistance loss is greatly reduced compared with that of the traditional cyclone barrel.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate the invention and together with the description serve to explain, without limitation, the invention. In the drawings:
FIG. 1 is a schematic diagram of the overall structure of an expanded low-resistance high-efficiency cyclone;
FIG. 2 is a schematic diagram of the working principle of the expanding type low-resistance efficient cyclone;
Fig. 3 is a schematic three-dimensional structure of the expanded-diameter low-resistance high-efficiency cyclone.
Description of the reference numerals
1 Volute 2 air inlet
3 Cylinder section 4 expanding section cylinder
5 Cone section 6 inner cylinder
7 Air outlet 8 feed opening
9 Upper wall of the expanding section
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
In the present invention, unless otherwise indicated, the terms "upper, lower, bottom, side, top" and the like are used merely to denote the orientation of the term in conventional use or are commonly understood by those skilled in the art and should not be construed as limiting the term.
As shown in figures 1-3, the invention provides an expanded-diameter type low-resistance efficient cyclone, which comprises a volute 1 with an air inlet 2, a cylinder section 3, an expanded-diameter section and a cone section 5, wherein the cylinder section 3, the expanded-diameter section and the cone section 5 are arranged below the volute 1 in sequence from top to bottom, the inner cylinder 6 is arranged in the wrapping center of the volute 1, the upper end of the inner cylinder 6 extends out of the volute 1 and is provided with an air outlet 7, a blanking opening 8 is arranged below the cone section 5, the expanded-diameter section comprises an expanded-diameter section upper wall 9 connected with the lower end of the cylinder section 3 and an expanded-diameter section column 4 connected with the upper end of the cone section 5, the inner diameter d2 of the expanded-diameter section column 4 is larger than the inner diameter d1 of the cylinder section 3, the height h5 of the expanded-diameter section column 4 is at least 0.1 times the inner diameter d1 of the cylinder section 3, and an included angle beta between the expanded-diameter section upper wall 9 and a horizontal plane is 0-70 degrees and is not 0 degrees.
The dust-containing gas (the dust in the dust-containing gas, namely the material content is about 1000g/Nm 3～1300g/Nm3, and the air flow speed is 15 m/s-25 m/s) enters the volute 1 of the cyclone cylinder through the air inlet 2, and forms high-speed rotational flow to spirally move downwards under the guidance of the volute 1. In the process, the materials spirally move downwards along the side wall under the action of centrifugal force and friction force of the side wall of the cyclone. When the dust-containing gas reaches the cone section 5 of the cyclone, the gas is turned back and moves upwards under the reflection effect of the cone section 5, and is discharged from the exhaust pipe through the inner cylinder 6, and the dust continues to move downwards along the side wall of the cone section 5. The conventional cyclone materials and waste gas enter the cyclone volute together, and under the action of centrifugal force, the materials are thrown on the side wall of the cyclone at a high speed, slide down along the side wall and finally are collected, the waste gas gradually loses kinetic energy in the rotating process, and finally, the waste gas rises in the center of the volute in a rotating way and is discharged at the top of the volute. In the invention, the expanding section comprises an expanding section upper wall 9 connected with the lower end of the cylinder section 3 and an expanding section column body 4 connected with the upper end of the cone section 5, wherein the inner diameter d2 of the expanding section column body 4 is larger than the inner diameter d1 of the cylinder section 3, the height h5 of the expanding section column body 4 is at least 0.1 time of the inner diameter d1 of the cylinder section 3, and the included angle beta between the expanding section upper wall 9 and the horizontal plane is between 0-70 degrees and is not 0 degrees. The cyclone is mainly characterized in that a unique cylinder expanding structure, namely an expanding section, is designed below the cylinder section 3, the expanding of the expanding section is beneficial to reducing wind speed and accelerating gas-solid separation, so that materials are collected quickly, the expanding of the expanding section reduces the gas 'turn-back' distance and reduces resistance loss, the included angle beta between the upper wall 9 of the expanding section and the horizontal plane is between 0-70 degrees, namely, the cylinder expanding adopts transition diameter variation, and the influence on a body gas flow field and a material flow field is reduced. According to the analysis, the diameter-expanding type low-resistance high-efficiency cyclone barrel structure adopts the diameter-expanding structure in the process of rotating materials and gas, so that the wind speed is reduced on the basis of cyclone dust collection, gas and solid are separated again, the dust collection efficiency is improved, in addition, the gas kinetic energy can be further reduced, and the cyclone barrel is discharged under the condition of small negative pressure (suction force) of the upper cyclone barrel. The expanding type low-resistance high-efficiency cyclone adopts a unique cylinder expanding structure, the separation efficiency is improved by 1-3% compared with that of the traditional cyclone, and the pressure loss coefficient is reduced by 15-30% compared with that of the traditional cyclone.
In a preferred embodiment of the invention, the inner diameter d2 of the expanding section cylinder 4 is 1.1-1.3 times of the inner diameter d1 of the cylinder section 3, the height h5 of the expanding section cylinder 4 is 0.1-1 times of the inner diameter d1 of the cylinder section 3, and the included angle beta between the upper wall 9 of the expanding section and the horizontal plane is between 0-70 degrees and is not 0 degrees. The total length h of the upper end of the volute 1 from the lower end of the cone section 5 is 2.5-3.5 times of the inner diameter d1 of the cylinder section 3, so that the wind speed is reduced, gas and solid are separated again, the dust collection efficiency is improved, in addition, the gas kinetic energy can be further reduced, and the cyclone can be discharged under the condition of lower negative pressure (suction) of the upper cyclone.
In a preferred embodiment of the invention, in order to further influence the body gas flow field and the material flow field, so as to improve the separation efficiency and reduce the pressure loss, the included angle beta between the upper wall 9 of the expanding section and the horizontal plane is 0-70 degrees, and the optimal interval is 35-60 degrees.
In a preferred embodiment of the invention, in order to accelerate gas-solid separation and facilitate the 'turn-back' distance, the resistance loss is reduced, and the inner diameter d0 of the inner cylinder 6 is 0.45-0.55 times the inner diameter d1 of the cylinder section 3.
In a preferred embodiment of the invention, in order to further accelerate the gas-solid separation and facilitate the "turn-back" of the gas flow, the resistance loss is reduced, and the length h1 of the top of the volute 1 from the lower end of the inner cylinder 6 is 0.95-1.15 times the height h2 of the volute 1.
In a preferred embodiment of the invention, the inner diameter d4 of the feed opening 8 is 0.1-0.3 times the inner diameter d1 of the cylindrical section 3 in order to facilitate the feeding and facilitate the "turn-back" of the air flow and reduce the resistance loss.
In a preferred embodiment of the invention, in order to facilitate blanking and facilitate air flow 'turning back', the resistance loss is reduced, and the included angle alpha between the outer wall of the cone section 5 and the horizontal plane is 55-70 degrees.
In a preferred embodiment of the invention, the air inlet 2 is of a pentagonal structure formed by cutting corners and rectangles, the width of the upper end of the air inlet 2 is 1250mm-1750mm, and the width of the lower end is 200mm-1200mm.
In the above technical scheme, the volute 1 is formed by fixing the air inlet pipeline on the cyclone column section in a clockwise or anticlockwise wrapping manner, one end of the volute is tangent to the cylinder section 3, and the other end of the volute is the air inlet 2, wherein in the preferred arrangement mode, the wrapping angle of the volute 1 is 240-300 degrees.
The diameter d1 of the cyclone cylinder of the production line is generally 5000-5500 mm, the inlet is a pentagon with a chamfer angle, the height is 2500-2500 mm, and the inlet wind speed is controlled to be 15-25 m/s.
In the technical scheme, the cyclone barrel is a hollow barrel and comprises a hollow barrel formed by a volute 1, a cylinder section 3, an expanding section and a cone section 5, and an inner barrel 6 extending into the hollow barrel.
In the above technical solutions, the description such as the inner diameter d1 is a conventional and simplified description in the art, meaning the length d1 of the inner diameter.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the simple modifications belong to the protection scope of the present invention.
In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.
Moreover, any combination of the various embodiments of the invention can be made without departing from the spirit of the invention, which should also be considered as disclosed herein.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911135305.2A CN110947249B (en) | 2019-11-19 | 2019-11-19 | Expanding type low-resistance high-efficiency cyclone cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911135305.2A CN110947249B (en) | 2019-11-19 | 2019-11-19 | Expanding type low-resistance high-efficiency cyclone cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110947249A CN110947249A (en) | 2020-04-03 |
| CN110947249B true CN110947249B (en) | 2024-12-17 |
Family
ID=69977806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911135305.2A Active CN110947249B (en) | 2019-11-19 | 2019-11-19 | Expanding type low-resistance high-efficiency cyclone cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110947249B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203018226U (en) * | 2013-01-11 | 2013-06-26 | 济南大学 | Sudden-expansion environment-friendly cyclone cylinder |
| CN211189398U (en) * | 2019-11-19 | 2020-08-07 | 安徽海螺建材设计研究院有限责任公司 | Expanding low-resistance high-efficiency cyclone |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100392606B1 (en) * | 2001-03-24 | 2003-07-23 | 삼성광주전자 주식회사 | cyclone dust-collecting apparatus for vacuum cleaner |
| CN102430295A (en) * | 2011-09-14 | 2012-05-02 | 南京西普水泥工程集团有限公司 | Gas-solid separator |
| CN103629939A (en) * | 2013-12-20 | 2014-03-12 | 济南大学 | Whirlwind cylinder of circular-table-shaped internal cylinder |
-
2019
- 2019-11-19 CN CN201911135305.2A patent/CN110947249B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203018226U (en) * | 2013-01-11 | 2013-06-26 | 济南大学 | Sudden-expansion environment-friendly cyclone cylinder |
| CN211189398U (en) * | 2019-11-19 | 2020-08-07 | 安徽海螺建材设计研究院有限责任公司 | Expanding low-resistance high-efficiency cyclone |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110947249A (en) | 2020-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201275508Y (en) | High-efficient low-resistance type cyclone cartridge | |
| CN101732928B (en) | Cement kiln exhaust gas dust separator and its exhaust gas dust separation method | |
| CN201260992Y (en) | High-efficiency and energy-saving cyclone dust collector | |
| CN103586144A (en) | Electrolytic manganese dioxide cyclone separator | |
| CN115353308A (en) | Clay ore suspension calcining system and process flow | |
| CN211189398U (en) | Expanding low-resistance high-efficiency cyclone | |
| CN2647434Y (en) | Efficient energy-saving cyclone dust collector | |
| CN110947249B (en) | Expanding type low-resistance high-efficiency cyclone cylinder | |
| CN202762559U (en) | Scroll cyclone dust collector | |
| CN202156936U (en) | Sintering rotary kiln device using coal ash to produce alumina in low temperature-ammonia method | |
| CN211801693U (en) | High-efficiency low-resistance cyclone cylinder | |
| CN201697147U (en) | Non-corrosive dust collection and energy saving chimney | |
| CN111174595A (en) | A seven-stage preheating system at the end of a cement kiln and its working method | |
| CN203018226U (en) | Sudden-expansion environment-friendly cyclone cylinder | |
| CN101269289A (en) | Drag-reducing centrifugal separation device | |
| CN213433379U (en) | Resistance-reducing cyclone for dry cement production line | |
| CN205537153U (en) | Environmental protection low energy consumption dust removal terminal | |
| CN211668294U (en) | Seven grades of preheating systems of cement kiln tail | |
| CN111167621B (en) | Multistage combined weak vortex low-resistance cyclone preheating system | |
| CN207113620U (en) | Efficiently double air-out cyclone preheaters | |
| CN101125858B (en) | Method for directly reclaiming catalyst of organic silicon monomer fluidized bed reactor and device thereof | |
| CN211896814U (en) | A plasma gasifier with built-in gas turbulence device | |
| CN203540732U (en) | Energy-saving dry type cyclone dust collector | |
| CN111167620A (en) | High-efficiency low-resistance cyclone cylinder and working method | |
| CN203295370U (en) | Desulfurized gypsum calcining device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |