CN101579601B - Venturi ring efficient mass transfer layer absorption tower - Google Patents
Venturi ring efficient mass transfer layer absorption tower Download PDFInfo
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- CN101579601B CN101579601B CN2009101468554A CN200910146855A CN101579601B CN 101579601 B CN101579601 B CN 101579601B CN 2009101468554 A CN2009101468554 A CN 2009101468554A CN 200910146855 A CN200910146855 A CN 200910146855A CN 101579601 B CN101579601 B CN 101579601B
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Abstract
The invention discloses a Venturi efficient mass transfer layer absorption tower which sets a Venturi efficient mass transfer layer in an empty spray tower. By utilizing Venturi effect, the Venturi efficient mass transfer layer absorption tower can improve the efficiency of gas-liquid mass transfer, ensure uniform gas distribution, increase gas-liquid contact time and area, and reduce liquid-gas ratio and power consumption. The absorption tower is simple in structure, lower in resistance and easy in manufacture and maintenance, and can be widely used in the flue gas desulphurization, dust extraction and chemical fields.
Description
Technical field
The described venturi ring gas-liquid mass transfer technology that belongs to of patent of the present invention is a kind of venturi ring efficient mass transfer layer and spraying layer combined type absorption tower specifically.
Background technology
At present, wet process of FGD adopts the spray void tower usually, it is big that the spray void tower has the load variations of adaptation, be difficult for characteristics such as obstruction, but gas-liquid mass transfer efficient is low, the liquid-gas ratio height, power consumption is big, adopt venturi gas-liquid mass transfer technology can improve gas-liquid mass transfer efficient, as adsorption tower smoke inlet Venturi tube and Ta Nei being set is provided with the venturi rod and strengthens the grid mass transfer, because it is inhomogeneous to enter the adsorption tower smoke gas distribution, it is low to present middle air flow speed, near the high characteristics of tower wall air velocity, above-mentioned Venturi tube and the setting of venturi grid can not be satisfied the smoke distribution characteristics, its mass-transfer efficiency is low, falls flat.
Summary of the invention:
A kind of venturi ring efficient mass transfer layer absorption tower of the present invention, be provided with smoke inlet and exhanst gas outlet, the lower end, absorption tower is tower still slurries ponds, between adsorption tower smoke import and spraying layer venturi ring efficient mass transfer layer is set, the spraying layer top is provided with the flap demister, the top, absorption tower is an exhanst gas outlet, the venturi ring efficient mass transfer layer setting is two-layer up and down, the venturi ring of every layer of efficient mass transfer layer is an arranged in concentric circles, two interlamellar spacings are 0.5～2.5m up and down, for utilizing Venturi effect, lower floor's venturi ring efficient mass transfer layer percent opening is 20～50%, and upper strata venturi ring efficient mass transfer layer percent opening is 30～60%, in conjunction with the characteristics of distribution of gas in the absorption tower, gas distribution was inhomogeneous after flue gas entered the absorption tower, it is low to present in the middle of the tower flow velocity, near the high characteristics of tower wall flue gas flow rate, design the ring of every layer of venturi ring efficient mass transfer layer and encircle between keep the spacing of 10～200mm, and successively decrease from the center of circle to tower wall ring spacing, dredge outer close donut in being rendered as.
Flue gas enters in the tower from the adsorption tower smoke inlet, at first makes air-flow uniform on each cross section, uptake zone by two-layer venturi ring efficient mass transfer layer, then by the spraying layer absorber portion, and the SO in the flue gas
2, flue dust and sprayed slurry counter current contacting be washed and remove, last clean flue gas again through flap demister dehydration back from absorption tower outlet discharge.Compare with routine spray void tower, flue gas improves 10～25% by this venturi ring efficient mass transfer layer absorption tower desulfuration efficiency, and its principle is as follows:
1. the two-layer venturi ring efficient mass transfer layer in the absorption tower is adjusted the flue gas stream speed that enters the absorption tower, makes its gas distribution even;
2. the surface of every layer of venturi ring efficient mass transfer layer forms one deck liquid film, has increased the gas-liquid contact area;
3. produce the secondary drop when spray liquid of venturi ring efficient mass transfer layer top is got to ring surface and splash, increase the meeting of liquid mechanism of qi, prolonged gas-liquid contact time;
4. when flue gas was by venturi ring efficient mass transfer layer, the interannular air velocity was accelerated, and produced agitaion, mass transfer between forced fluid gas;
5. flue gas forms a plurality of Venturi effects by two-layer venturi ring efficient mass transfer layer up and down, and mass-transfer efficiency improves.
The venturi ring cross section be shaped as circle, square, rectangle, triangle or rhombus, venturi ring adopts fiberglass, steel alloy, carbon steel lining rubber or carbon steel coated with glass fibre reinforced plastics to make.
Adopt this venturi ring efficient mass transfer layer absorption tower in the wet method fume desulfurizing system, have the following advantages:
1. smoke distribution is even: venturi ring efficient mass transfer layer is set in the absorption tower, flue gas is more evenly distributed on each cross section of uptake zone, help obtaining higher desulfuration efficiency.
2. reinforcement mass transport process: two-layer up and down venturi ring efficient mass transfer layer has increased gas-liquid contact time and contact area, has realized that flue gas fully effectively contacts with slurries, and Venturi effect has been strengthened the mass transfer between gas-liquid.
3. maintenance is convenient: venturi ring efficient mass transfer layer can be used as tower internals ad hoc inspection and repair platform.
4. integrated cost is low: can be issued to higher desulfuration efficiency at lower liquid-gas ratio, reduce the internal circulating load of desulfurization slurry, reduce total power consumption, effectively reduce desulphurization cost.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of upper strata venturi ring efficient mass transfer layer.
Fig. 3 is the structural representation of lower floor's venturi ring efficient mass transfer layer.
Among the figure: the venturi ring efficient mass transfer layer of 1-upper strata; 2-lower floor venturi ring efficient mass transfer layer; The 3-absorption tower; 4-flap demister; The 5-spraying layer; 6-absorption tower wall; The 7-smoke inlet; The 8-exhanst gas outlet.
The specific embodiment
Introduce the specific embodiment of the present invention in detail below in conjunction with accompanying drawing.
The limestone-gypsum wet method fume desulfurizing system adopts venturi ring efficient mass transfer layer absorption tower, the lower end, absorption tower is tower still slurries ponds, two-layer venturi ring efficient mass transfer layer is set between adsorption tower smoke import and spraying layer, the flap demister is set above spraying layer, the top, absorption tower is an exhanst gas outlet.The venturi ring of every layer of efficient mass transfer layer is an arranged in concentric circles, and two interlamellar spacings are 1.5m up and down, and lower floor's venturi ring efficient mass transfer layer percent opening is 40%, and upper strata venturi ring efficient mass transfer layer percent opening is 50%.Air-flow was inhomogeneous after flue gas entered the absorption tower from the adsorption tower smoke inlet, flow velocity is low in the middle of presenting tower, near the high characteristics of tower wall flue gas flow rate, thereby design between the ring of every layer of venturi ring and the ring and keep the spacing of 10～200mm, and successively decrease from the center of circle to tower wall ring spacing, dredge outer close donut in being rendered as.Flue gas enters in the tower from adsorption tower smoke inlet, at first be able to by two-layer venturi ring efficient mass transfer air-flow uniform, then by the spraying layer absorber portion, the SO in the flue gas
2, flue dust and sprayed slurry counter current contacting be washed and remove, last clean flue gas again through flap demister dehydration back from adsorption tower smoke outlet discharge.The Venturi effect of utilizing two-layer venturi ring efficient mass transfer layer to form has been strengthened mass transport process between the interior gas-liquid of tower, has increased gas-liquid contact time and contact area, airflow uniform distribution in the tower, and desulfuration efficiency improves greatly.
Claims (2)
1. venturi ring mass transfer layer absorption tower, it is characterized in that: absorption tower (3) are provided with smoke inlet (7) and exhanst gas outlet (8), the top of smoke inlet (7) is provided with lower floor's venturi ring mass transfer layer (2) and upper strata venturi ring mass transfer layer (1), the venturi ring of every layer of mass transfer layer is an arranged in concentric circles, two interlamellar spacings are 0.5～2.5m up and down, lower floor's venturi ring mass transfer layer (2) percent opening is 20～50%, upper strata venturi ring mass transfer layer (1) percent opening is 30～60%, the spacing that keeps 10～200mm between the ring of every layer of venturi ring mass transfer layer and the ring, successively decrease to tower wall ring spacing from the ring center of circle, dredge outer close donut in being rendered as, on two-layer venturi ring mass transfer layer top spraying layer (5) absorber portion is set, spraying layer (5) absorber portion top is provided with flap demister (4), top, absorption tower exhanst gas outlet (8) and exhaust pass UNICOM.
2. venturi ring mass transfer layer absorption tower according to claim 1, it is characterized in that: the venturi ring cross section be shaped as circle, square, rectangle or rhombus, venturi ring is made by fiberglass, steel alloy, carbon steel lining rubber or carbon steel coated with glass fibre reinforced plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101468554A CN101579601B (en) | 2009-06-12 | 2009-06-12 | Venturi ring efficient mass transfer layer absorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101468554A CN101579601B (en) | 2009-06-12 | 2009-06-12 | Venturi ring efficient mass transfer layer absorption tower |
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| Publication Number | Publication Date |
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| CN101579601A CN101579601A (en) | 2009-11-18 |
| CN101579601B true CN101579601B (en) | 2011-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101468554A Expired - Fee Related CN101579601B (en) | 2009-06-12 | 2009-06-12 | Venturi ring efficient mass transfer layer absorption tower |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844037A (en) * | 2010-06-12 | 2010-09-29 | 上海电力学院 | Tower for flue gas desulfurization in homogeneous air-humidifying method |
| CN102961949A (en) * | 2012-12-21 | 2013-03-13 | 泰州职业技术学院 | Gas absorption apparatus |
| CN104003417B (en) * | 2013-04-19 | 2016-03-30 | 大唐环境产业集团股份有限公司 | A kind of reverse-flow urea pyrolysis ammonia-preparing device and method |
| CN105169924A (en) * | 2015-09-10 | 2015-12-23 | 武汉中电楚能环保工程有限公司 | Wet desulphurization device with effect-raising grating plate |
| CN106823733A (en) * | 2015-12-04 | 2017-06-13 | 南京清元景和环境科技有限公司 | A kind of portable waste gas purification apparatus |
| CN105536445A (en) * | 2016-02-24 | 2016-05-04 | 长沙市望城区湘磊环境工程公司 | Desulfurizing and dedusting device |
| CN108421379B (en) * | 2018-05-17 | 2024-05-28 | 大连铭晟环保设备有限公司 | Desulfurization and denitrification dedusting tower omentum splashing device and desulfurization and denitrification dedusting tower |
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| DE2637016C2 (en) * | 1975-08-18 | 1987-05-21 | Bell & Howell Co., Chicago, Ill., Us | |
| WO1992011499A1 (en) * | 1990-12-21 | 1992-07-09 | A. Ahlstrom Corporation | Method and apparatus for controlling temperature in a circulating fluidized bed reactor |
| CN1593717A (en) * | 2004-07-15 | 2005-03-16 | 马鸿疆 | Rotational flow venturi tube plate desulfurization dedusting purification tower |
| CN201058284Y (en) * | 2007-06-21 | 2008-05-14 | 山东大学 | Venturi tube fluidizer with adjustable load |
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2009
- 2009-06-12 CN CN2009101468554A patent/CN101579601B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2637016C2 (en) * | 1975-08-18 | 1987-05-21 | Bell & Howell Co., Chicago, Ill., Us | |
| WO1992011499A1 (en) * | 1990-12-21 | 1992-07-09 | A. Ahlstrom Corporation | Method and apparatus for controlling temperature in a circulating fluidized bed reactor |
| CN1593717A (en) * | 2004-07-15 | 2005-03-16 | 马鸿疆 | Rotational flow venturi tube plate desulfurization dedusting purification tower |
| CN201058284Y (en) * | 2007-06-21 | 2008-05-14 | 山东大学 | Venturi tube fluidizer with adjustable load |
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Owner name: SHANXI JINFENG ENERGY CONSERVATION + ENVIRONMENTAL Free format text: FORMER NAME: SHANXI JINFENG ENVIRONMENTAL PROTECTION ENGINEERING + DESIGNING CO., LTD. |
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Address after: 030032, Taiyuan economic and Technological Development Zone, Shanxi province Wu Luo Street venture building four floor Co-patentee after: Li Pengju Patentee after: Shanxi Jinfeng Environmental Protection Engineering & Designing Co., Ltd. Address before: 030032, Taiyuan economic and Technological Development Zone, Shanxi province Wu Luo Street venture building four floor Co-patentee before: Li Pengju Patentee before: Shanxi Jinfeng Environmental Protection Engineering & Designing Co., Ltd. |
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Granted publication date: 20110518 Termination date: 20130612 |