CN1480244A - High performance wet process dust removal desulfurizing unit with three spinning parts - Google Patents

High performance wet process dust removal desulfurizing unit with three spinning parts Download PDF

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CN1480244A
CN1480244A CNA031467601A CN03146760A CN1480244A CN 1480244 A CN1480244 A CN 1480244A CN A031467601 A CNA031467601 A CN A031467601A CN 03146760 A CN03146760 A CN 03146760A CN 1480244 A CN1480244 A CN 1480244A
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tower
newel
eddy flow
king
tube
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CN1207082C (en
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新 林
林新
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Abstract

An efficient tree-rotation wet desulfurizing deaner for the fume of boiler integrates Venturi tube, eddy unit, cyclone unit and dewatering-defrosting unit. It is composed of the main tower consisting of internal tower, fume outlet tube, tangent fume inlet tube, ash contained water and desulfurized dregs outlet tube and tangent liquid chemical spraying tube, the cyclone-type centrifugal dewatering unit and water retaining ring. Said dewatering unit features its combination of centripetal cyclone and centrifugal cyclone in it. Its advantages are high desulfurizing rate (95% or more) and high dusting rate 99.7% or more).

Description

Three revolve the high-efficiency wet-desulfurizing deduster
Technical field
The present invention relates to a kind of device of waste gas purification, can be used for the desulfurization and dedusting of boiler smoke especially.
Background technology
Chinese patent 98219685.7 disclosed wet high-effective desulfation dust-extraction devices, it includes the king-tower of intracardiac tower in the band and a venturi tower that is communicated with horizontal nozzle, two Tata walls all are equipped with tangential liquid stream jet pipe, and in cyclone is housed on the intracardiac tower.It has improved the effect of flue gas desulfurization and dedusting with liquid, gas co-flow, and simplified the resistance drop that the structure of equipment, the consumption that has reduced soup and fluid flow, but it also has following shortcoming: 1) king-tower of this device employing and the Double-Tower Structure of venturi tower need take bigger area and space, and the resistance drop of tower inner fluid is yet bigger; 2) its king-tower is straight annulus cartridge type, and flue gas and soup promptly carry out desulfurization and dedusting in the eddy flow layer after the tangential mouth of tower wall enters, because the intersection that fluid lacks in the eddy flow layer radially mixes, so desulphurization reaction is abundant not enough; 3) the king-tower central area does not have soup and replenishes, and apparent soup deficiency is arranged, and fog concentrates on the center of king-tower when fluid rotate, and it rises with air-flow and is difficult to be removed, so can have influence on the aridity of desulfurization and dedusting effect and smoke evacuation.
Chinese patent 02126677.8 disclosed high efficiency wet desulfuration and dust-removing device, it comprises the king-tower that vertically installed its center has interior tower, the king-tower top is provided with on outlet that smoke outlet tube, bottom be provided with tangential flue gas inlet tube, buck and desulfurization slag, the tower wall tangential soup jet pipe is set, and the retaining ring that has on the inner wall of tower of king-tower top, king-tower is provided with the convex circle that a circle can make the passage of fluid be folded to the tower center earlier and then upwards enlarge gradually on the inner wall of tower above the flue gas inlet tube.But it also has following deficiency: its gas-liquid is narrower and time is short and pressing in the radial impact scope at king-tower center, so the also further raising of the effect of desulfurization and dedusting.
Summary of the invention
The present invention will overcome shortcoming or the deficiency that exists in the above-mentioned prior art, provide a kind of and can carry out efficient desulfurizing and dust collecting boiler smoke, so that it meets the environmental protection new-standard of power plants coal-burning boiler, and what equipment cost and operating cost were all lower three revolves the high-efficiency wet-desulfurizing deduster, characteristics such as also make it have the area of scientific and reasonable for structure, hold facility simultaneously and the space is smaller, power consumption and amount of consumption of drugs are few.
The high-efficiency wet-desulfurizing deduster is revolved in the present invention three, it comprises the king-tower that vertically installed its center has interior tower, the smoke outlet tube that the king-tower top is provided with, the tangential flue gas inlet tube that the bottom is provided with and the outlet of buck and desulfurization slag, the tangential soup jet pipe that is provided with on the tower wall, eddy flow centrifugal dehumidifier in interior cat head end setting, the retaining ring that king-tower has on the inwall more than the interior column overhead, be characterized in: it on the gas channel below the eddy flow centrifugal dehumidifier, be provided with a cover can make earlier air-flow entad eddy flow rise and transfer the bispin guiding device that centrifugal cyclone makes progress again to, this device comprises one group of entad diversion column, its diameter between one group of centrifugal flow guiding post and two diversion columns is less than the inner duct of interior tower diameter, and the port of export of drug liquid tube is arranged in the inner duct.Each quantity of organizing diversion column entad or centrifugal flow guiding post can be 3 to 50, and when selecting, this concrete quantity depends on boiler capacity and the exhaust gas volumn that is produced thereof.
Above-mentioned wet method sulphur removing and dust removing device, it also can be provided with water leg on the inner wall of tower at king-tower top.
Of the present invention three revolve the high-efficiency wet-desulfurizing deduster, also have newel in the inner duct of its bispin guiding device, the upper end of this newel connect eddy flow centrifugal dehumidifier, lower end connect in tower, and the port of export of drug liquid tube is arranged in the gap between eddy flow centrifugal dehumidifier and the newel.
Above-mentioned wet method sulphur removing and dust removing device, also can between newel and eddy flow centrifugal dehumidifier, be provided with overflow mechanism, this overflow mechanism includes and is communicated with the soup inlet pipe and is arranged on the medical solution pool in the newel, the radially duct that the top, pond is offered, and with the annular overfall of hole link radially.
When using wet method sulphur removing and dust removing device of the present invention, flue gas enters king-tower from tangential flue gas inlet tube, rotation at a high speed in the space of the annulus cylindricality between king-tower and Nei Ta, meanwhile, the alkalies that sprays into from tangential soup jet pipe rotates in the same way at Ta Nei and flue gas, and be and vaporific the mixing with flue gas carry out desulphurization reaction, this gas-liquid mixed stream rises along the rotation of tower wall; By the bispin guiding device time, gas-liquid flow has a rotation radial centripetal to gather, rotate rising, the radially centrifugal process of dispersing of rotation, and replenish soup in this process, so that gas-liquid is carried out desulfurization chemical reaction and fully dedusting more completely in radially fully colliding, contact at king-tower; After this air-flow rises, and is subjected to the soup spray fluid infusion from tangential soup jet pipe on the tower wall once more, not only make desulphurization reaction more thorough, and spray liquid is further taken away the cloud in the air-flow; After this, gas-liquid flow continues rotation and rises, and further removes liquid pearl and solid content in the fluid on eddy flow centrifugal dehumidifier and retaining ring; At last, desulfurization and dedusting and dry gas are from the exhanst gas outlet tube drainage, and liquid pearl and solid content except be thrown toward the king-tower wall and along wall downwards, also by the eddy flow centrifugal dehumidifier with retaining ring is held back and following, finally the buck bottom the king-tower and the outlet of desulfurization slag discharge.
Beneficial effect of the present invention: 1) the present invention has added after the bispin guiding device, together with its original eddy flow centrifugal dehumidifier interior, the process that three eddy flows can in the gas-liquid rising passway of co-flow, occur, thereby increased gas-liquid in radially collision probability and required time of chemical reaction, and in collision contact abundant supply soup, so desulphurization reaction is very thorough, the efficient height of Rotary dust collecting; 2) ascending air also continues to be subjected to the effect of downward hydrojet and eddy flow centrifugal dehumidifier, retaining ring, water leg in rotation, so the dewatering of wet method sulphur removing and dust removing device of the present invention, demist are effective, so that the flue gas of discharging is comparatively dry, its water capacity is below 3.6%; 3) rational in infrastructure, the floor space of wet method sulphur removing and dust removing device of the present invention and space are all little, and the parts of rapid wear are few, thus make, installation, maintenance is convenient, and the running cost that equipment is in operation is few, therefore helps applying.In a word, the present invention integrates Venturi tube, vortex device, swirl-flow devices, dehydrating demisting device, the desulfuration efficiency that makes wet method sulphur removing and dust removing device of the present invention more than 95%, efficiency of dust collection is higher than 99.7%, and dust exhausting concentration is less than 40mg/m 3, make discharged flue gas not emit white cigarette, free from environmental pollution, can meet the environmental protection new-standard of China's thermal power generation fire coal boiler fume discharging fully.
Description of drawings
Fig. 1 is the main cutaway view that the high-efficiency wet-desulfurizing deduster is revolved in the present invention three;
Fig. 2, Fig. 3 and Fig. 4 are respectively A-A cutaway view, B-B profile and the C-C profiles among Fig. 1;
Fig. 5, Fig. 6 are respectively D-D profile, the F-F profiles among Fig. 1.
Fig. 7 is the main cutaway view that another embodiment of high-efficiency wet-desulfurizing deduster is revolved in the present invention three;
Fig. 8 is the enlarged drawing of the node I among Fig. 7;
Fig. 9 is the G-G cutaway view among Fig. 8.
Label declaration among the figure: 1-king-tower; The 1a-inner duct; Tower in the 2-; The 3-flue gas inlet tube; 4-is diversion column entad; The 5-drug liquid tube; 6-centrifugal flow guiding post; 7-eddy flow centrifugal dehumidifier; 7a-center slotted eye; The 8-retaining ring; 9-soup jet pipe; The 10-water leg; The 11-smoke outlet tube; The outlet of 12-buck and desulfurization slag; The 13-overflow plate; The 14-newel; The 14a-medical solution pool; 14b-is the duct radially; 14c-annular overfall.
The specific embodiment
Embodiment 1. present embodiments three revolve the high-efficiency wet-desulfurizing deduster, its structure can be seen from Fig. 1, it comprises the king-tower 1 that vertically installed its center has interior tower 2, the smoke outlet tube 11 that the king-tower top is provided with, the tangential flue gas inlet tube 3 that the bottom is provided with and the outlet 12 of buck and desulfurization slag, the tangential soup jet pipe 9 that is provided with on the tower wall, eddy flow centrifugal dehumidifier 7 in interior cat head end setting, the retaining ring 8 that king-tower has on the inwall more than the interior column overhead, and it is provided with one section and can makes entad eddy flow of air-flow earlier on the gas channel below the eddy flow centrifugal dehumidifier, rotation is risen and is transferred the bispin guiding device that centrifugal cyclone makes progress again to.Wherein the structure of bispin guiding device also can be seen from Fig. 4 and Fig. 5, and it comprises one group is four entad diversion column 4, one group of centrifugal flow guiding post 6 that is four, and the inner duct 1a between two diversion columns.Wherein inner duct is by forming behind the king-tower oncus, and drug liquid tube 5 directly inserts from this thickened wall, and the diameter of inner duct is less than interior tower diameter.Eddy flow centrifugal dehumidifier 7 be one be fixed in cat head end and its diameter greater than the disk of interior tower diameter.Retaining ring 8 is arranged on the annulus post of the port of export of soup jet pipe 9, and the effect of it and eddy flow centrifugal dehumidifier 7 is similar, all can further catch the cloud in the body that dams, and avoid soup to be sprayed onto the central area of king-tower.
When using wet method sulphur removing and dust removing device of the present invention, flue gas enters king-tower 1 from tangential flue gas inlet tube 3, rotation (representing airflow direction with dotted arrow among Fig. 2 and Fig. 3) at a high speed in the space of the annulus cylindricality between king-tower and Nei Ta 2, meanwhile, the alkaline soup that sprays into from tangential soup jet pipe 9 rotates (representing the liquid flow path direction with solid arrow Fig. 2 and Fig. 3) in the same way with flue gas in king-tower, and be and vaporific the mixing carry out desulphurization reaction with flue gas, this gas-liquid mixed stream rises along the rotation of tower wall, when passing through the entad diversion column 4 of bispin guiding device, gas-liquid flow is the mode of gathering at the center (representing its direction of rotation with dotted arrow in Fig. 4) and enters inner duct 1a, when rising centrifugal flow guiding post 6, be centrifugal and disperse (in Fig. 5, representing its direction of rotation) with dotted arrow, in this bispin guiding device, in time to gas-liquid flow supply soup, there is sufficient soup to finish the chemical reaction and the easily separated dust of desulfurization in the collision contact by drug liquid tube 5 to guarantee gas-liquid; After this ascending air is subjected to the spray fluid infusion of soup jet pipe 9 once more, and the spray soup of this moment not only makes desulfurization chemical reaction more abundant, but also can take away the cloud in the air-flow; Gas-liquid flow is by eddy flow centrifugal dehumidifier 7 and retaining ring 8 time, liquid pearl in it and solid content except be thrown toward the king-tower wall and along wall downwards, also by the eddy flow centrifugal dehumidifier and retaining ring is held back and by the deadweight following, at last from the buck of king-tower bottom and outlet 12 dischargings of desulfurization slag, and desulfurization and dedusting qualified and dry flue gas make progress, discharge by inertia from smoke outlet tube 11.The passage of going out of the outlet 12 of buck and desulfurization slag is provided with the overflow plate 13 of plug bush type, and this plate can be inserted into the end with it as required, perhaps is not inserted into the end; For example when operate as normal, overflow plate can be inserted into the end, so that waste liq spills out and recycled from the overflow plate top portion, and when quitting work, can will carry on the overflow plate,, guarantee that exit passageway is unimpeded so that liquid is gone out from the bottom of overflow plate 13 in the tower.
Embodiment 2. present embodiments can see from Fig. 1, and different is: the water leg 10 that is provided with on the inner wall of tower at king-tower top with embodiment 1 for it.The structure of this groove also can see from Fig. 6, and it is to be distributed in the circumferential circle inner groovy of king-tower top inner wall, and the equal vertical bottom face of each groove wherein is to make things convenient for flowing downward of sediment and cleaning solution.
Embodiment 3. present embodiments can be seen from Fig. 7, it is with embodiment 1 or 2 different is: also have newel 14 among the inner duct 1a of bispin guiding device, the upper end of this newel connects eddy flow centrifugal dehumidifier 7, the lower end connects interior tower 2, the port of export of drug liquid tube 5 can be set directly in the gap between eddy flow centrifugal dehumidifier 7 and the newel 14, and its soup can be downward along newel.It also can catch thin and light thin ash except carrying out the tonic liquid at the center, thereby dust removing effects is improved.
Embodiment 4. present embodiments can be seen from Fig. 7, Fig. 8 and Fig. 9, it is with embodiment 1 or 2 or 3 different is: also be provided with overflow mechanism between its newel 14 and the eddy flow centrifugal dehumidifier 7, this overflow mechanism includes and is communicated with drug liquid tube 5 and is arranged on medical solution pool 14a, the radially duct 14b that the top, pond is offered in the newel 14, and with the annular overfall 14c of hole link radially.From Fig. 7 and Fig. 8, see, the port of export of drug liquid tube 5 is opened in the center slotted eye 7a of eddy flow centrifugal dehumidifier 7, at this moment soup directly enters medical solution pool 14a in the newel from drug liquid tube 5, and the radially duct 14b on newel and annular overfall 14c are excessive, the soup that overflows can be all downward along the outer surface of newel, can be used for desulphurization reaction, can also carry cloud in the ascending air, thin ash and sulfur dioxide secretly, effectively desulfurization, dedusting and dry.

Claims (5)

1, a kind of three revolve the high-efficiency wet-desulfurizing deduster, it comprises the king-tower (1) that vertically installed its center has interior tower (2), the smoke outlet tube (11) that the king-tower top is provided with, the tangential flue gas inlet tube (3) that the bottom is provided with, the outlet of buck and desulfurization slag (12), the tangential soup jet pipe (9) that is provided with on the tower wall, eddy flow centrifugal dehumidifier (7) in interior cat head end setting, the retaining ring that king-tower has on the inwall more than the interior column overhead (8), it is characterized in that: it is provided with a cover and can makes the first entad eddy flow rising of air-flow and transfer the bispin guiding device that centrifugal cyclone makes progress again on the gas channel below the eddy flow centrifugal dehumidifier, this device comprises one group of entad diversion column (4), its diameter between one group of centrifugal flow guiding post (6) and two diversion columns is less than the inner duct (1a) of interior tower diameter, and the port of export of drug liquid tube (5) is arranged in the inner duct (1a).
2, according to claim 1 three revolve the high-efficiency wet-desulfurizing deduster, it is characterized in that: water leg (10) is set on the inner wall of tower at said king-tower top.
3, according to claim 1 and 2 three revolve the high-efficiency wet-desulfurizing deduster, it is characterized in that: also have newel (14) in the inner duct of said its bispin guiding device (1a), the upper end of this newel connect eddy flow centrifugal dehumidifier (7), lower end connect in tower (2), and the port of export of drug liquid tube (5) is arranged in the gap between eddy flow centrifugal dehumidifier and the newel.
4, according to claim 1 and 2 three revolve the high-efficiency wet-desulfurizing deduster, it is characterized in that: be provided with overflow mechanism between said newel (14) and the eddy flow centrifugal dehumidifier (7), this overflow mechanism includes and is communicated with drug liquid tube (5) and is arranged on the medical solution pool (14a) in the newel (14), the radially duct (14b) that the top, pond is offered, and with the annular overfall (14c) of hole link radially.
5,, according to claim 3 three revolve the high-efficiency wet-desulfurizing deduster, it is characterized in that: be provided with overflow mechanism between said newel (14) and the eddy flow centrifugal dehumidifier (7), this overflow mechanism includes and is communicated with drug liquid tube (5) and is arranged on the medical solution pool (14a) in the newel (14), the radially duct (14b) that the top, pond is offered, and with the annular overfall (14c) of hole link radially.
CN 03146760 2003-06-24 2003-06-24 High performance wet process dust removal desulfurizing unit with three spinning parts Expired - Fee Related CN1207082C (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107096341A (en) * 2017-05-17 2017-08-29 辽宁基伊环保科技股份有限公司 Fire coal boiler fume Wet multi-stage washs multi-pollutant cleaning equipment integrated system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107096341A (en) * 2017-05-17 2017-08-29 辽宁基伊环保科技股份有限公司 Fire coal boiler fume Wet multi-stage washs multi-pollutant cleaning equipment integrated system

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