CN1212175C - Spraying bubbling desulfur dust settling tower - Google Patents
Spraying bubbling desulfur dust settling tower Download PDFInfo
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- CN1212175C CN1212175C CN 03124757 CN03124757A CN1212175C CN 1212175 C CN1212175 C CN 1212175C CN 03124757 CN03124757 CN 03124757 CN 03124757 A CN03124757 A CN 03124757A CN 1212175 C CN1212175 C CN 1212175C
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Abstract
The present invention relates to a spray foaming tower for desulphurization and dust removal, which is formed by that two cylinders with different diameters are installed coaxially and vertically, wherein the bottom of the small cylinder is opened, and the big cylinder has a cylinder bottom; a hanging interval is formed between the bottom end of the small cylinder and the cylinder bottom of the big cylinder, and the lower end of the hanging interval is provided with a circle of gas spraying holes in a grid shape along the circumferential direction; the top end of the big cylinder is connected with the small cylinder by a sealing cover, and an annular gas passage is formed between the inner wall of the big cylinder and the outer wall of the small cylinder; the sealing cover is provided with a circle of liquid spraying holes along the circumferential direction, and the position of the big cylinder, which is near to the sealing cover is provided with a tangent gas inlet. The present invention has the characteristics of simple structure, difficult clogging, low operation cost, high efficiency, low investment, etc. Thereby, the present invention is especially suitable for feeding solid particles which have large gas amplitude and contain a large amount of liquid.
Description
Technical field: the invention belongs to a kind of wet flue gas desulfurization systems dust arrester, be specifically related to the architecture advances of JBR rotating vane type flue gas desulfurization systems gas wash tower.
Background technology: the widest a kind of fume desulphurization method of domestic and international application is a wet type limestone/gypsum method at present, and this method is made absorbent with calcium, absorbs the oxysulfide of removing in the flue gas.In the wet type limestone/gypsum system, the most key equipment is gas absorbing device.Several frequently seen absorption plant is: spray tower, Venturi absorber, packed tower, JBR absorption tower, multiaperture-type tower.
More than several towers respectively possess some good points, weakness is also arranged, be suitable for different occasions, wherein the JBR tower be different from other absorption tower sharpest edges be the come-up bubble produced eddy motion, have in the circulation the liquid jet effect.
The principle of JBR tower is with pending gas special device, and the pipe as band aperture or finedraw sprays in the absorption liquid with certain speed, produces bubble near the gas outlet, in the process that bubble rises, finishes gas-liquid mass transfer.Some JBR tower also is equipped with the screw of rotation above spray orifice, be used for the air pocket that sprays into is cut into tiny bubble, to increase mass transfer area.Because the gas that sprays into has certain pressure, the bubble of come-up can be formed the JBR layer by rapid dispersion on the one hand, has strengthened the gas-liquid mass transfer interface, and bubble is in uphill process on the other hand, itself has also produced eddy motion, and the liquid jet effect of circulation in having.
The great advantage of this kind of reactor is that distribution of gas is even, but three drawbacks are arranged: at first, because pending gas enters large diameter ring-like cloth air chamber from the air inlet pipe of little caliber, the gas speed bust that big reducing causes makes ring-like cloth air chamber become a desirable dust chamber; Next is that the pipe that has finedraw is died in power failure, and when the pH value of absorption liquid was low, the tubule mouth of pipe very easily fouling stopped up; It three is that to be loaded on the agitator bar of reactor head longer, and the bottom amplitude of fluctuation is big during operation, and is fragile.
Summary of the invention: technical problem to be solved by this invention is, provides a kind of simple in structure, is difficult for stopping up, and operating cost is low, the efficient height, and reduced investment is adapted to atm number especially and contains the injecting, bubbling, desulfurizing and dust removing tower of the solid particle charging situation of big quantity of fluid.
Injecting, bubbling, desulfurizing and dust removing tower of the present invention is formed by the coaxial vertical installation of two cylinders of different-diameter, the roundlet tube bottom is the opening shape, at the bottom of large cylinder has tin, unsettled spacing is arranged between at the bottom of roundlet tube bottom and the large cylinder tube, and the lower end edge circumferencial direction has a circle paliform fumarole; The large cylinder top links to each other by seal cover with little cylinder, has constituted a ring-like gas passage between large cylinder inwall and the little cylinder outer wall, and described seal cover along the circumferential direction has a circle spray hole; Large cylinder has the tangent line air inlet near the seal cover place.
As a further improvement on the present invention, described roundlet tube stage casing is provided with one or two valve tray, and epimere is provided with spray equipment; Described spray hole is the big taper spray hole of the little outlet of import; Described seal cover is provided with the absorption liquid import.
The present invention is owing to constituted a ring-like gas passage between large cylinder inwall and the little cylinder outer wall, simple in structure, there is not the dead angle in the passage, be difficult for stopping up, easily form the decompression of " ring-like " swirl gas current stabilization, effective, gas distribution is even, cooling, dedusting, absorption function are realized simultaneously, and liquid does not have the machinery stirring in the tower; It is simple to open the processing of strip grid hole on the little cylinder, and maintenance is difficult for stopping up easily, and crushing is little, and general plate column plate pressure drop is 0.4～1.1 kPa, and ring-like gas passage adds that the pressure drop in grid hole is less than 400 handkerchiefs; The percent opening height adds the big or small eddy motion that gas-liquid constitutes in inner core, make the gas-liquid contact-making surface good, the absorption efficiency height, and when absorption liquid PH=5～7, grid hole desulfuration efficiency can reach 70%.The present invention has simple in structure, be difficult for to stop up, and reduced investment, operating cost is low, the efficient height, advantage such as washability is big is adapted to atm number especially, and contains the situation of big quantity of fluid and solid particle charging.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the A-A profile of Fig. 1.
Fig. 3 is a user mode sketch of the present invention.
Among the figure: 1, roundlet tube 2, large cylinder 3, paliform fumarole 4, spray hole 5, valve tray 6, spray equipment 7, seal cover 8, tangent line air inlet 9, absorption liquid import 10, ring-like gas passage
The specific embodiment:
As shown in Figure 1, 2, the present invention is formed by the coaxial vertical installation of two cylinders of different-diameter, and roundlet tube 1 bottom is the opening shape, at the bottom of large cylinder 2 has tin, between at the bottom of 2 of roundlet tube 1 bottom and the large cylinders unsettled spacing is arranged, and the lower end edge circumferencial direction has a circle paliform fumarole 3; Large cylinder 2 tops link to each other by seal cover 7 with roundlet tube 1, have constituted a ring-like gas passage 10 between large cylinder 2 inwalls and roundlet tube 1 outer wall, and seal cover 7 along the circumferential direction has a circle spray hole 4; Large cylinder 2 has tangent line air inlet 8 near seal cover 7 places, and roundlet tube 1 stage casing is provided with one or two valve tray 5, and epimere is provided with spray equipment 6, and spray hole 4 can be the big taper spray hole of the little outlet of import, and seal cover 7 is provided with absorption liquid import 9.
Operation principle of the present invention is as follows: as shown in Figure 3, when the present invention uses, in the large cylinder 2 absorption liquid is housed, flue gas at first tangentially enters ring-like gas passage 10, and in this passage, air-flow is earlier around inner core 1 rotation, behind deceleration, current stabilization, contact (when strengthening spray flux, ring-like gas passage 10 can replace the cooling tower in the traditional wet lime technology, and the flue gas that boiler comes out is reduced to below 100 ℃ by about 150 ℃) with absorption liquid and stream under the spray of ring top; Flue gas is cooled in annulus, and grit is washed off (dedusting aspect, the air-flow in the passage in fact just is equivalent to be equipped with in the wet wall division tower of whirlwind of current stabilization post around the operating process that inner core rotates), and removes a part of oxysulfide; Gas behind cooling and dedusting is being carried drop secretly and is being continued operation downwards, during to paliform fumarole 3 top, rotation gas acts on liquid level in the ring, make that liquid level produces the waveform pulsation in the annulus, and drive the liquid in rotation in the tower, make tower at the bottom of absorption liquid produce a big eddy motion; Air-flow is pressed to inner core 1 to liquid in the ring simultaneously, make the liquid level difference that forms 100～400mm between inner core 1 and the annulus liquid level, when the air-flow of pulsing passes paliform fumarole 3 with the speed of 5～20 meter per seconds, when spraying to the liquid in the inner core 1, near paliform fumarole 3, form bubble on the one hand, bubble is upwards tortuous under buoyancy of water, many little eddy motions have been produced, under this maelstrom of absorption liquid at the bottom of the tower drives, bubble near liquid level sharply disperses, break rapidly, make that the interior circulating fluid sedimentation exhalation of JBR layer is more obvious violent; The pulsation of gas, liquid causes the fluid in the inner core 1 to be in turbulence state on the other hand, gas, liquid contact-making surface is increased, for the second time the Gas-Liquid Absorption better effects if.In ring, finish the gas of current stabilization decompression, cooling and dedusting, liquid agitation, Gas-Liquid Absorption function, go upward to the absorption stage casing that constitutes by the spray equipment 6 on two valve trays 5 and the plate.Proceed the desulfurization absorption reaction in the stage casing, reacted clean gas is after after the folded sheet demist, enter chimney or atmosphere.
The present invention is used for classical lime method, and per hour 800 cubic metres of air inflows, content of sulfur dioxide is 1500ppm, absorption liquid PH=5～7 o'clock, and desulfuration efficiency is 90% (wherein ring grid JBR absorber portion efficient is 75%); When PH＞7, desulfuration efficiency is 90～98%; Efficiency of dust collection＞95%.
Claims (2)
1, a kind of injecting, bubbling, desulfurizing and dust removing tower, it is characterized in that it is that the coaxial vertical installation of two cylinders by different-diameter forms, little cylinder (1) bottom is the opening shape, at the bottom of large cylinder (2) has tin, little cylinder (1) bottom and large cylinder (2) tube have unsettled spacing between the end, and the lower end edge circumferencial direction has a circle paliform fumarole (3); Large cylinder (2) top links to each other by seal cover (7) with little cylinder (1), has constituted a ring-like gas passage (10) between large cylinder (2) inwall and little cylinder (1) outer wall, and described seal cover (7) along the circumferential direction has a circle spray hole (4); Large cylinder (2) locates to have tangent line air inlet (8) near seal cover (7); Described little cylinder (1) stage casing is provided with one or two valve tray (5), and epimere is provided with spray equipment (6); Described seal cover (7) is provided with absorption liquid import (9).
2, injecting, bubbling, desulfurizing and dust removing tower according to claim 1 is characterized in that described spray hole (4) is the big taper spray hole of the little outlet of import.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03124757 CN1212175C (en) | 2003-08-22 | 2003-08-22 | Spraying bubbling desulfur dust settling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03124757 CN1212175C (en) | 2003-08-22 | 2003-08-22 | Spraying bubbling desulfur dust settling tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1513580A CN1513580A (en) | 2004-07-21 |
| CN1212175C true CN1212175C (en) | 2005-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03124757 Expired - Fee Related CN1212175C (en) | 2003-08-22 | 2003-08-22 | Spraying bubbling desulfur dust settling tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1212175C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101732972B (en) * | 2010-01-27 | 2012-05-23 | 天津理工大学 | Dual-liquid level jet bubbling pipe |
| CN103111148B (en) * | 2013-01-21 | 2015-06-10 | 江汉大学 | Smoke gas purifying device |
| CN107243206B (en) * | 2017-07-21 | 2023-09-19 | 中国石油大学(北京) | Flue gas scrubbing tower equipment |
| CN109745818A (en) * | 2019-03-15 | 2019-05-14 | 广东索特能源科技有限公司 | A kind of Rafael nozzle formula deduster |
| CN112185593A (en) * | 2020-09-30 | 2021-01-05 | 中国核动力研究设计院 | Pressure difference filtering type built-in dehydrogenation treatment device and method |
-
2003
- 2003-08-22 CN CN 03124757 patent/CN1212175C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1513580A (en) | 2004-07-21 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050727 |