CN101879506A - Inertial elbow thick-thin powder separator - Google Patents
Inertial elbow thick-thin powder separator Download PDFInfo
- Publication number
- CN101879506A CN101879506A CN 201010200820 CN201010200820A CN101879506A CN 101879506 A CN101879506 A CN 101879506A CN 201010200820 CN201010200820 CN 201010200820 CN 201010200820 A CN201010200820 A CN 201010200820A CN 101879506 A CN101879506 A CN 101879506A
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- Prior art keywords
- elbow
- thick
- water conservancy
- conservancy diversion
- open water
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Links
- 239000000843 powder Substances 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 230000000694 effects Effects 0.000 abstract description 19
- 238000000926 separation method Methods 0.000 abstract description 10
- 239000003245 coal Substances 0.000 abstract description 8
- 239000007787 solid Substances 0.000 abstract description 6
- 239000004568 cement Substances 0.000 abstract description 2
- 239000002817 coal dust Substances 0.000 description 15
- 239000002245 particle Substances 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 208000002925 dental caries Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 210000000689 upper leg Anatomy 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011044 inertial separation Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
Images
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- Combined Means For Separation Of Solids (AREA)
- Separating Particles In Gases By Inertia (AREA)
Abstract
The invention relates to an inertial elbow thick-thin powder separator, which belongs to the technical field of power conveying and burning. The separator comprises a core barrel, an open guide elbow and ribs; the core barrel is a closed straight barrel, one end of the open guide elbow is connected with the core barrel, and the ribs are fixed on both sides of the open guide elbow, and are outspread. The cross section of the open guide elbow is shaped like a non-closed circular arc or polygon. The separator with a simple structure has a good thick-thin separation effect on two streams of powder, the distribution of the thick stream of powder is uniform, and the separator is applicable to gas-solid conveyers which are provided with elbow structures and need thick-thin separation, such as thick-thin pulverized coal cyclone burners and cement industries.
Description
Technical field
The present invention relates to a kind of powder light-dark separation device, the gas-solid feeding device that is specially adapted to have elbow structure and need carries out deep or light separation belongs to powder conveying and field of combustion technology.
Background technology
In coal burner and cement industry, often adopt light-dark separation device, with the particle enrichment of powder feeding pipes, form deep or light two strands.For example in powdered coal burner, wind of powder feeding is by the burner of ad hoc structure, powder meeting Local enrichment, produce deep or light separation, after dense strand of coal dust enters the combustion chamber, burn, because the partial oxygen deficiency, can effectively suppress the generation of nitrogen oxide, along with the carrying out of burning, oxygen participates in burning more gradually, thereby guarantees efficiency of combustion when reducing NOx.
In this class device, powder feeding pipes generally has elbow structure, particle in the elbow since effect of inertia will keep original track, and at the pipeline straight length along former flow direction enrichment.Correlative study shows that particle can keep longer distance at the inertia concentration effect of elbow.Effectively utilize the elbow concentration effect of particle, both can reach deep or light separation purpose, can simplify the separator structure again, reduce cost.Especially in coal burner, effectively utilize elbow structure can simplify burner structure, and guarantee deep or light separating effect.
Yet the inertia of elbow can cause coal dust too to be enriched in the top of elbow and powder feeding pipes, and this undue enrichment phenomenon can remain to the outlet of burner.Most of coal dust is enriched in less zone, can cause combustion instability, influence the efficient of concentration coal burner, and the coking of initiation burner outlet, burns major accident such as combustor component.For avoiding the generation of this situation, guarantee the effect of deep or light separation simultaneously, need be in by efficient deep or light separation with coal dust, the coal dust in dense strand is distributed equably along the hoop of burner tubes.Existing inertia elbow isolation technics mostly only relies on the elbow of an airduct, is easy to generate the undue enrichment phenomenon of coal dust.For improving deep or light separating effect, avoid the separating/enriching excessively of coal dust simultaneously, need install additional structure additional an airduct elbow, make it to make full use of elbow inertia, can overcome the separating/enriching effect excessively that elbow inertia causes again.
Summary of the invention
For effectively utilizing the inertial separation characteristic of gas-solid conveying pipe elbow, and simplify the separator structure, reach deep or light separating effect, the present invention proposes a kind of inertial elbow thick-thin powder separator.
Technical scheme of the present invention is as follows:
A kind of inertial elbow thick-thin powder separator, it is characterized in that: this device is made up of core bucket, open water conservancy diversion elbow and fin, and described core bucket is closed straight tube, and an end of open water conservancy diversion elbow is connected with the core tube, described fin is fixed on the both sides of open water conservancy diversion elbow, and outwards stretches.
The cross section of open water conservancy diversion elbow of the present invention is non-closed circular arc or polygon, and the bent angle β of open water conservancy diversion elbow is 90 °＞β＞10 °, and preferred β is 45 °.
Technical characterictic of the present invention also is: form subtended angle α between described fin and the open water conservancy diversion elbow, and 180 °＞α＞0 °, subtended angle α is preferably 90 °.
The present invention has the following advantages and the high-lighting effect: 1. utilize gas-solid conveying pipe elbow particle action of inertia to reach separating effect, and simple in structure; 2. open water conservancy diversion elbow and fin are divided into two parts physically with gas-solid conveying pipe elbow grain flow, alleviated the phenomenon of particle in the enrichment of elbow top, dense strand of particle evenly distributed in the straight length subsequently, thereby guarantee that particle evenly distributes in dense strand of two phase flow; 3. the core bucket is inside and outside two cavitys with gas-solid pipeline or an airduct straight length physical segmentation, effectively prevents the blending again of dense thigh and thin airflow.
Description of drawings
Fig. 1 is the 3-D view of inertial separator.
Fig. 2 is the structure front view of inertial separator.
Fig. 3 is the structure side view of inertial separator.
Fig. 4 is the schematic diagram that is installed on the inertial elbow thick-thin powder separator embodiment in the deep or light turbulent burner.
1-core bucket; The open water conservancy diversion elbow of 2-; The 3-fin; The 4-vortex burner; The 5-inertial elbow thick-thin powder separator.
The specific embodiment
Further specify principle of the present invention, concrete structure and preferred forms below in conjunction with accompanying drawing.
Fig. 1 is the 3-D view of this inertial elbow thick-thin powder separator, and Fig. 2 and Fig. 3 are respectively the front view and the side view of this device.The present invention is made up of core bucket 1, open water conservancy diversion elbow 2 and fin 3.Core bucket 1 is closed straight tube, and its cross section be a circle, also can be the shape of polygon or other sealings, and the effect of core bucket is that the direct tube section with the powder feeding airduct is divided into inside and outside two cavitys physically.One end of core bucket 1 is connected with open water conservancy diversion elbow 2, the cross sectional shape of open water conservancy diversion elbow 2 is the part of the cross sectional shape of core bucket 1, but be non-enclosed construction, its objective is and stopping a part of coal dust owing in inertia motion to the time airduct elbow top, allow the coal dust that is not blocked under effect of inertia, move to the top of powder feeding pipes elbow smoothly.The cross section of open water conservancy diversion elbow 2 is generally non-closed circular arc or polygon.Fin 3 is fixed on the both sides of open water conservancy diversion elbow 2, and outwards stretch, its effect is the movement locus that fully changes a part of coal dust, makes these coal dusts move to core bucket 1 outer wall and an airduct inwall along the bottom of open water conservancy diversion elbow 2 or the bottom of fin 3, forms uniform dense strand of powder stream.Fin 3 forms certain angle with open water conservancy diversion elbow 2, and its subtended angle scope is 180 °＞α＞0 °, and subtended angle is 90 ° generally speaking, and powder is shunted uniformly, and is enriched in the different position of powder feeding pipes.Open water conservancy diversion elbow 2 bends to certain angle, thereby come flow path direction to be divided into two bursts smoothly on the powder edge, and avoid destroying the motional inertia of incoming flow flow field and powder as far as possible, the bent angle scope of open water conservancy diversion elbow 2 is 90 °＞β＞10 °, is good with 45 °.
Fig. 4 is the schematic diagram that is installed on the inertial elbow thick-thin powder separator embodiment in the deep or light turbulent burner.Turbulent burner is widely used in the coal-burning boiler, and concentration coal burner has low NOx drainage, and cigarette is asked characteristics such as deviation is little.Inertial elbow thick-thin powder separator is installed in the airduct of this turbulent burner, and open water conservancy diversion elbow 2 is arranged in the same way with an airduct elbow of burner section, fin 3 and open water conservancy diversion elbow 2 are divided into two cavitys up and down with an airduct elbow of burner section.Coal dust is up by airduct of burner with a wind, after entering the elbow section, under effect of inertia to the top enrichment of an airduct road horizontal segment, but because the existence of open water conservancy diversion elbow 2 and fin 3, one time airduct elbow section is divided into two parts up and down, has the coal dust of half to move along the fin bottom approximately.After coal dust enters horizontal segment, just can converge, thereby weakened coal dust is in the past only crossed separating/enriching at the horizontal pipe top side effect at three points in two zones and horizontal pipe tops of fin bottom.Subsequently, the core bucket 1 that is connected with open water conservancy diversion elbow 2 is divided into inside and outside two passages with an airduct horizontal segment, most of coal dust will move along external channel, and 1/5 the powder of only having an appointment enters core bucket inner passage, thereby at two strands of the inside and outside formation of core bucket 1 bias pulverized coal air-flow independently.Because the physical separation effect of core bucket, dense powder and light powder stream thigh until leaving burner, enter no longer blending burner hearth and burn.The existence of this inertia elbow guarantees that wind of powder feeding forms deep or light two strands of air-flows, reaches steady combustion and low NO
xThe effect of discharging.
This band elbow thick-thin powder separator can be used for the powder feeding pipes of other band elbow equally, to reach the incoming flow powder is divided into deep or light two strands, and guarantees the equally distributed effect of powder in the dense strand of air-flow.
Claims (5)
1. inertial elbow thick-thin powder separator, it is characterized in that: this device is made up of core bucket (1), open water conservancy diversion elbow (2) and fin (3), described core bucket (1) is closed straight tube, one end of open water conservancy diversion elbow is connected with core tube (1), described fin (3) is fixed on the both sides of open water conservancy diversion elbow (2), and outwards stretches.
2. a kind of inertial elbow thick-thin powder separator as claimed in claim 1 is characterized in that: the cross section of described open water conservancy diversion elbow is non-closed circular arc or polygon, and the bent angle β of open water conservancy diversion elbow is 90 °＞β＞10 °
3. a kind of inertial elbow thick-thin powder separator as claimed in claim 2 is characterized in that: the bent angle β of described open water conservancy diversion elbow (2) is 45 °.
4. as claim 1,2 or 3 described a kind of inertial elbow thick-thin powder separators, it is characterized in that: form subtended angle α between described fin (3) and the open water conservancy diversion elbow (2), and 180 °＞α＞0 °.
5. a kind of inertia elbow separator as claimed in claim 4 is characterized in that: the subtended angle α that forms between described fin (3) and the open water conservancy diversion elbow (2) is 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010200820A CN101879506B (en) | 2010-06-09 | 2010-06-09 | Inertial elbow thick-thin powder separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010200820A CN101879506B (en) | 2010-06-09 | 2010-06-09 | Inertial elbow thick-thin powder separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101879506A true CN101879506A (en) | 2010-11-10 |
| CN101879506B CN101879506B (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010200820A Active CN101879506B (en) | 2010-06-09 | 2010-06-09 | Inertial elbow thick-thin powder separator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135462A (en) * | 2015-08-21 | 2015-12-09 | 重庆愚吉机械制造有限公司 | Pulverized coal even distributing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4634054A (en) * | 1983-04-22 | 1987-01-06 | Combustion Engineering, Inc. | Split nozzle tip for pulverized coal burner |
| CN2132558Y (en) * | 1992-09-03 | 1993-05-12 | 中国科学院化工冶金研究所 | Restricting and seperating device of carry bed top for moving bed |
| EP1418258A1 (en) * | 2002-11-08 | 2004-05-12 | Maschinenfabrik Rieter Ag | Solid particles separator for fibre material |
| US6840183B2 (en) * | 1999-11-15 | 2005-01-11 | Rickey E. Wark | Diffuser insert for coal fired burners |
-
2010
- 2010-06-09 CN CN201010200820A patent/CN101879506B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4634054A (en) * | 1983-04-22 | 1987-01-06 | Combustion Engineering, Inc. | Split nozzle tip for pulverized coal burner |
| CN2132558Y (en) * | 1992-09-03 | 1993-05-12 | 中国科学院化工冶金研究所 | Restricting and seperating device of carry bed top for moving bed |
| US6840183B2 (en) * | 1999-11-15 | 2005-01-11 | Rickey E. Wark | Diffuser insert for coal fired burners |
| EP1418258A1 (en) * | 2002-11-08 | 2004-05-12 | Maschinenfabrik Rieter Ag | Solid particles separator for fibre material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135462A (en) * | 2015-08-21 | 2015-12-09 | 重庆愚吉机械制造有限公司 | Pulverized coal even distributing device |
| CN105135462B (en) * | 2015-08-21 | 2019-02-01 | 淮北市生产力促进中心 | Coal even separator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101879506B (en) | 2012-10-10 |
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Effective date of registration: 20190812 Address after: 030008 No. 73, Jiancao District, Taiyuan City, Shanxi Province, No. 10, C, Taiyuan Stainless Steel Industrial Park Co-patentee after: Tsinghua University Patentee after: Taiyuan Boiler Group Co., Ltd. Address before: 100084 Beijing box office,,, Tsinghua University Patentee before: Tsinghua University |
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| TR01 | Transfer of patent right |