CN85108753B - Effective chimney - Google Patents
Effective chimney Download PDFInfo
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- CN85108753B CN85108753B CN85108753A CN85108753A CN85108753B CN 85108753 B CN85108753 B CN 85108753B CN 85108753 A CN85108753 A CN 85108753A CN 85108753 A CN85108753 A CN 85108753A CN 85108753 B CN85108753 B CN 85108753B
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- China
- Prior art keywords
- chimney
- sheet
- air deflector
- present
- gradient
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Abstract
The present invention relates to a chimney with a deflecting device at the inside, which belongs to the technical field of environmental protection--air pollution prevention. The chimney comprises a truncated cone and a deflector, wherein the truncated cone in a uniparted hyperboloid shape is installed at a concrete exit port or a masonry stack exit port, and the deflector is made of a corrosion prevention wear resistant material. A spiral guide baffle plate is embedded in the inner wall of the chimney, the chimney is designed in an optimal gradient, and an intake air smoke channel is connected with the bottom of the chimney with a certain elevation angle along the tangential direction. The present invention can be used for improving the smoke cloud diffusion condition, reducing the chimney height, extending the service life and reducing the discharge quantity of dust and ground concentration of harmful gas. The present invention is suitable for high altitude discharge of gas containing harmful matter.
Description
A kind of efficient chimney that air deflector is housed in the exit.
The major function of modern chimney is to realize the nuisance high altitude discharge, reduces ground pollution.For achieving the above object, the development trend of chimney is to increase chimney height at present, improves the flue gas velocity of discharge, adopts chimney stack to concentrate discharging.Because the concrete chimney stack adopts the construction of sliding formwork jacking pouring method usually, chimney exit diameter should not be less than 2.0～2.5 meters.When discharging the cigarette amount less than 20 myriametres
3In/time, just can't reach rational muzzle velocity, and the diffusion conditions of nuisance will worsen more, often cause ground, Yan Yuan downstream nuisance concentration over-standard if ambient wind velocity increases or atmospheric inversion when increasing this moment.In order to improve the chimney breast flow velocity, Britain and Germany once installed conical nozzle additional on steel stack (sees [Soviet Union] UA Xi Shikefu: " chimney of power-equipment " P138.Hydraulic and electric engineering publishing house, 1978); U.S. Pat-4380189 " design of forced action type industrial chimney ", adopt concrete (or brick) to be built into inside and outside two cylinders, the top is built into the nozzle of tapered cylinder body, utilizes the space between inside and outside two cylinders to blast air, forces the outlet flue gas to quicken and improve the rising height of smoke, mists and clouds.The former is a kind of simple side-gatherer, and gas-flow resistance is bigger, and the effect of the anti-environment wind-force of smoke, mists and clouds is less; Latter's chimney shaft complex structure, the cost height, power consumption is big.
In order to improve smoke clouds liftig height, strengthen the resistance ability of smoke, mists and clouds diffusion couple meteorological condition, particularly to the cigarette amount less than 20 myriametres
3The time, the superfluous temperature of outlet flue gas is lower than the situation of 35K, for improving its diffusion conditions, reduces ground pollution, proposed the present invention.
To achieve these goals, the present invention mainly take to install in concrete or brick chimney exit by upper and lower two sections combinations and within it wall be welded with the air deflector of certain inclination angle muscle sheet, the muscle sheet that spirality rises is built in the inner wall of stack embedding, chimney barrel has the gradient, the gradient progressively increases from the bottom to top, and the smoke inlet of chimney and the horizontal cross-section of chimney barrel are the elevation angle and the comprehensive guiding device tangent with chimney barrel inwall circumference.This device reasonably joins the tangent line air intake elevation angle and cylindrical shell inside spin muscle sheet and top air deflector together, makes flue gas form spiral escalation in cylindrical shell, is formed with the plume of certain speed and rigidity at chimney outlet, thereby has improved smoke, mists and clouds power rising height.Especially when being lower than 35 ℃, above-mentioned effect is more remarkable less than the superfluous temperature of 2100KU and flue gas (being the difference of exhanst gas outlet temperature and atmospheric temperature) for the flue gas rate of heat release.This device is that also the chimney bottom gradient is little, both increased the stability of chimney, enlarged the space of cylindrical shell again, entered chimney from the bottom, combined with the spiral bar sheet that is provided with in the cylindrical shell again when flue gas is tangential direction, flue gas is reasonably circled round in cylindrical shell, be similar to centrifugal collector, thereby sedimentation preferably and reclaim dust, the discharge capacity of flue dust and particulate nuisance reduced, improved smoke clouds liftig height in addition, thereby alleviated pollution atmosphere and ground.
Comprehensive guiding device of the present invention can reach more than 40% the flue gas dust collection rate of gathering dust without electricity, has reduced the discharging of flue dust and nuisance, adopts certain chimney of the present invention, SO
2Per day flooring concentration is 0.052 milligram/cubic metre, and dust concentration is 0.0093 milligram/cubic metre, is better than the universal standard; Owing to improved smoke clouds liftig height, under equal conditions can reduce chimney height, save capital construction investment, adopt certain chimney of the present invention to reduce to 120 meters for 180 meters by former design, reached intrinsic requirement; Adopt corrosion resistant air deflector, flue gas and chimney breast cylindrical shell are separated, reduced corrosion, prolonged the service life of chimney barrel.
Below in conjunction with drawings and Examples, the present invention is further illustrated.
Fig. 1 is the profilograph of chimney of the present invention;
Fig. 2 is that chimney among Fig. 1 is along the drawing in side sectional elevation of A-A line.
-H
1≤Z＜O X
2/R
2 2+Y
2/R
2 2-Z
2/C
2＝1……（1）
0≤Z≤H
2X
2+Y
2＝R
2 2……（2）
C is a form parameter in the formula, and is selected according to actual conditions; R
2For air deflector goes out port radius, press the cigarette amount and determine that with outlet cigarette speed its outlet cigarette speed should be greater than the twice of local meteorological statistics mean wind speed (chimney breast level); H
1Be hyperboloid of one sheet frustoconical height degree; H
2Be the epimere cylinder heights; X, Y are plane coordinates, and Z is a vertical coordinate.Whole air deflector is made of heat-resisting, corrosion resistant material (as stainless steel or titanium material), and the air deflector inwall is welded with the fuisw rib sheet of same metal material; Fuisw rib sheet and chimney central axis on the air deflector inwall are 25 ° to 30 ° inclination angle, are processed into air deflector by equation (1), (2) design shape, add to be coated with behind the corrosion protective covering lifting and to locate with pilot pin to the top.Fuisw rib sheet 2 is built in the inner wall of stack embedding, the muscle sheet layout that rises twist, and until the air deflector lower end, muscle sheet spacing is 0.4～0.5 times of a chimney bottom inside radius, muscle sheet height is 0.005～0.01 times of inside radius.Flue gas enters the inlet 3 of chimney and the horizontal cross-section of chimney barrel is 30 ° to 60 ° the elevation angle, and it is tangent with chimney barrel inwall circumference, again with the fuisw rib sheet 2 of spirality rising, the comprehensive guiding device that air deflector 1 joins together, flue gas is risen in the cylindrical shell spiral, but both eddy dedusting effects, can improve outlet cigarette speed again and strengthen plume rigidity, thereby improve smoke, mists and clouds power rising height.Chimney shaft 4 gradients are designed to: the bottom is 0.08～0.06; The middle part is 0.04～0.05; The top is 0.02～0.00.The bottom gradient is little, has enlarged the chimney space, both can increase chimney stability, has slowed down cigarette speed again, is beneficial to ash fall.
The present invention is applicable to that all contain the high altitude discharge of nuisance gas.
Claims (6)
1, a kind of concrete or brick chimney that air deflector is installed in the exit, it is characterized in that the air deflector inwall is equipped with the fuisw rib sheet, the muscle sheet that spirality rises is built in the inner wall of stack embedding, chimney barrel has the gradient, the gradient progressively increases from the bottom to top, and the smoke inlet of chimney and the horizontal cross-section of chimney barrel are the elevation angle and tangent with chimney barrel inwall circumference.
2, chimney according to claim 1 is characterized in that air deflector is made up by two sections, and epimere is cylindrical, and hypomere is hyperboloid of one sheet frustum body.
3, chimney according to claim 1 and 2 is characterized in that fuisw rib sheet and the chimney central axis on the air deflector inwall is 25 ° to 30 ° inclination angle.
4, chimney according to claim 1, the spacing that it is characterized in that inner wall of stack embedding block fuisw rib sheet is 0.4 to 0.5 times of chimney bottom inside radius, muscle sheet height is 0.005 to 0.01 times of inside radius.
5, chimney according to claim 1 is characterized in that the described elevation angle is 30 ° to 60 °.
6, chimney according to claim 1 is characterized in that the chimney gradient is designed to: bottom 0.08 to 0.06, middle part 0.04 to 0.03, top 0.02 to 0.00.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85108753A CN85108753B (en) | 1985-10-28 | 1985-10-28 | Effective chimney |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85108753A CN85108753B (en) | 1985-10-28 | 1985-10-28 | Effective chimney |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85108753A CN85108753A (en) | 1987-05-06 |
| CN85108753B true CN85108753B (en) | 1988-12-07 |
Family
ID=4796128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85108753A Expired CN85108753B (en) | 1985-10-28 | 1985-10-28 | Effective chimney |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85108753B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011035619A1 (en) * | 2009-09-28 | 2011-03-31 | Zheng Deming | Anticorrosive dust-collecting energy-saving chimney |
| WO2012000402A1 (en) * | 2010-06-29 | 2012-01-05 | Zheng Deming | Non-corrosive dust-collection energy-saving chimney |
| CN102535936A (en) * | 2011-07-15 | 2012-07-04 | 中环华创(北京)科技发展有限公司 | Efficient anti-corrosive energy-saving chimney |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1888537B (en) * | 2005-06-29 | 2010-06-02 | 盛惕闻 | Efficient corrosion resisting dust-collecting energy-saving chimney |
| TW201243245A (en) * | 2011-04-25 | 2012-11-01 | Univ Nat Pingtung Sci & Tech | Airway |
| CN102486064A (en) * | 2011-07-15 | 2012-06-06 | 中环华创(北京)科技发展有限公司 | Corrosion-free energy saving chimney |
| CN102563679A (en) * | 2011-07-15 | 2012-07-11 | 中环华创(北京)科技发展有限公司 | Flue gas guide device |
| CN102733643B (en) * | 2012-07-19 | 2014-07-23 | 湖南天通无腐烟囱工程有限公司 | Anti-corrosion dust collection energy-saving chimney |
| CN103063990B (en) * | 2012-12-26 | 2016-01-06 | 华北电力大学（保定） | Dust and sand weather simulation experiment system |
| CN104501266B (en) * | 2015-01-05 | 2017-06-23 | 陈斌 | A kind of lampblack absorber smoking channle |
| CN113606630A (en) * | 2021-08-20 | 2021-11-05 | 嵊州市浙江工业大学创新研究院 | Public flue for improving smoke discharge performance |
-
1985
- 1985-10-28 CN CN85108753A patent/CN85108753B/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011035619A1 (en) * | 2009-09-28 | 2011-03-31 | Zheng Deming | Anticorrosive dust-collecting energy-saving chimney |
| WO2012000402A1 (en) * | 2010-06-29 | 2012-01-05 | Zheng Deming | Non-corrosive dust-collection energy-saving chimney |
| CN102535936A (en) * | 2011-07-15 | 2012-07-04 | 中环华创(北京)科技发展有限公司 | Efficient anti-corrosive energy-saving chimney |
Also Published As
| Publication number | Publication date |
|---|---|
| CN85108753A (en) | 1987-05-06 |
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| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |