CN201534056U - Two-step-method unpowered sintering machine desulfuration and purification device - Google Patents
Two-step-method unpowered sintering machine desulfuration and purification device Download PDFInfo
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- CN201534056U CN201534056U CN2009202463765U CN200920246376U CN201534056U CN 201534056 U CN201534056 U CN 201534056U CN 2009202463765 U CN2009202463765 U CN 2009202463765U CN 200920246376 U CN200920246376 U CN 200920246376U CN 201534056 U CN201534056 U CN 201534056U
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Abstract
A two-step-method unpowered sintering machine desulfuration and purification device comprises a desulfuration reaction tower, a dust removal circulating system and a desulfuration circulating system. The two-step-method unpowered sintering machine desulfuration and purification device is characterized in that the desulfuration reaction tower is additionally arranged at the rear of an induced draft fan of a sintering machine and is divided into a water washing dust removal area and a desulfuration reaction area; the first step of purification treatment includes that dust particles in smoke are removed in the water washing dust removal area at first, and then smoke enters the desulfuration reaction area through a bubble cap type smoke rising pipe; the second step includes that sulfur dioxide in the smoke tightly contacts with desulfurizing agent sprayed from top to bottom in the desulfuration reaction area so as to be reacted, and then smoke is discharged into air after removing the sulfur dioxide. The unpowered desulfuration reaction tower is low in self resistance, and can be operated by utilizing the induced draft fan of the original sintering machine rather than additionally disposing a relay air blower. Compared with a traditional desulfuration device, the two-step-method unpowered sintering machine desulfuration and purification device has higher desulfuration rate, is low in manufacturing cost and operation cost, high in automation degree and simple and convenient in operation, can be operated continuously, safely and stably.
Description
Technical field
The utility model relates to a kind of sintering machine of steel mill discharged flue gas and carries out desulfurization purifier, is applicable to the desulfurization and the gas cleaning of multi-form sintering device flue gas.
Background technology
Also there is not economic desulfur technology reliably at present sintering machine of steel mill flue gas desulfurization technique, and the sulfur method of power plant and equipment are applied to sintering machine is unsuccessful, these sulfur methods and equipment ubiquity can not stable operations, desulfurization degree is low, system's seriously corroded and cost problem of higher.How according to the market situation development is a kind of can stably desulphurizing, do not increase the excessive operating cost and the device of one-time investment again to sintering process; It is low how to develop a kind of operating cost, and the desulfuration efficiency height does not influence a kind of flue gas desulfurization technique of the output of sintering machine, is the problem that present middle-size and small-size flue gas of sintering machine presses for solution.
Summary of the invention
The purpose of this utility model just provides a kind of cleaning and desulfurization device that adapts to multi-form sintering device handpiece discharging flue gas, can not stable operation to solve that existing traditional power plant boiler desulfurization technology is applied to behind the sintering machine, desulfurization degree is low, system's seriously corroded and cost problem of higher.
The technical solution of the utility model is: comprise desulfurization reaction tower, the dedusting circulatory system, desulphurization circulating system, be provided with desulfurization reaction zone on desulfurization reaction tower top, the interface that is located at the desulfuration solution spray equipment on this desulfurization reaction zone top is connected with the desulfuration solution outlet of desulphurization circulating system, and the slurries outlet that is located at this desulfurization reaction zone bottom is connected with the inlet of desulphurization circulating system; Be provided with the water washing dedust district in the bottom of described desulfurization reaction tower, on the top in this water washing dedust district the dedusting spray equipment is housed, the purified liquor outlet of the described dedusting circulatory system is connected with the leakage fluid dram that is located at this desulfurization reaction tower bottom with the interface of this dedusting spray equipment respectively with inlet; The interface that is located at this dedusting spray equipment is connected with the air-introduced machine outlet of sintering machine by pipeline with gas approach between this desulfurization reaction tower bottom.
Described dedusting cyclic system turnkey 1# water circulating pump and precipitation slag tank, the inlet on precipitation slag tank top is connected with the leakage fluid dram of described desulfurization reaction tower bottom, the purified liquor outlet on precipitation slag tank top is connected with the inlet of pipeline with the 1# water circulating pump by valve, and this 1# recirculated water delivery side of pump is connected with the interface of the dedusting spray equipment of described desulfurization reaction tower bottom; This dedusting circulatory system and described water washing dedust district form a closed circuit circulatory system.
Described desulphurization circulating system comprises the aeration oxidation pond, Roots blower, dewaterer, desulfuration solution preparation facilities, desulfuration recycle pump and the pump of sizing mixing, aerator in the outlet of Roots blower and the aeration oxidation pond is connected, and the desulfuration solution of aeration oxidation pond bottom exports and is connected by the interface of desulfuration recycle pump with described desulfuration solution spray equipment; Between the upper and lower side of this aeration oxidation pond, be connected with dewaterer; The desulfuration solution preparation facilities is connected with described aeration oxidation pond by the pump of sizing mixing; This desulphurization circulating system and described desulfurization reaction zone form a closed circuit circulatory system.
The structure of described desulfurization reaction tower is: be connected with the upper end in the upper end of the tower body of tubular and be small-bore taper outlet, the cap type cover body is housed above this taper outlet; Be provided with the blister bottom that is obliquely installed at the middle part of described tower body, tower body is divided into two parts up and down, on this blister bottom, be provided with a plurality of bubble-cap formula flue gas tedges; The zone up and down of this blister bottom is respectively described desulfurization reaction zone and water washing dedust district, on the top in this desulfurization reaction zone and water washing dedust district described desulfuration solution spray equipment and dedusting spray equipment is housed respectively; Be provided with a slurries outlet that passes tower body at the lowest part of this blister bottom; Conical bottom is equipped with in bottom at described tower body, is provided with described leakage fluid dram at the lowermost end of this conical bottom; The axle center of described gas approach enters in the described tower body for downward-sloping 5～10 °.
Described tower body is formed by connecting by the cone transition is coaxial by the different cylindrical shell of two sections diameter; Described blister bottom is located at the top of the hypomere cylindrical shell of this tower body.
Described cap type cover body is made up of cone-shaped hood and smoke exhaust pipe, and big mouthful of diameter of cone-shaped hood connects smoke exhaust pipe greater than the upper end diameter of described taper outlet at the top of this cone-shaped hood osculum.
Described bubble-cap formula flue gas tedge comprises short tube and flue gas bubble-cap, is provided with a plurality of flue gas openings on described blister bottom, connects a short tube above each this flue gas opening, and a flue gas bubble-cap is installed above this short tube.
Above described desulfurization reaction zone, be provided with mist eliminator.
The utility model has the advantages that: SR is low, can utilize the residual pressure of former sintering machine air-introduced machine, realizes the non helping hand operation, and power consumption is low, reduces operating cost greatly; Be applicable to the desulfurization of high-dust flue gas, two step method can be removed the high concentrate dust in the flue gas, recycles in the sintering machine batching; The covering radius of the design consideration shower nozzle of body of the tower and the change in flow of flue gas are designed to the reducing type tower body, have solved wall sticking phenomenon, guarantee operation steady in a long-term; The desulfurization degree height, the automaticity height, easy and simple to handle, byproduct can obtain comprehensive utilization.
After taking such scheme, desulfurization reaction tower resistance when operation only has 500～550Pa, according to design sintering machine air-introduced machine coupling 5%～10% overbottom pressure is arranged all, and the sintering machine overbottom pressure is all at 600～1200Pa thus.Hence one can see that uses this technology and equipment can not need to increase relay air blower fully, does not influence the output and the normal operation of sintering machine.
Description of drawings
Fig. 1 is the formation schematic diagram of technological process of the present utility model and system;
Fig. 2 is the structural representation of desulfurization reaction tower of the present utility model;
Fig. 3 is the structure for amplifying and the operation principle schematic diagram of a flue gas tedge among Fig. 2;
Fig. 4 is the structural representation on flue gas discharger of the present utility model (top among Fig. 2).
Description of reference numerals:
A, desulfurization reaction tower, B, the precipitation slag tank, C, the aeration oxidation pond, D, Roots blower, E, dewaterer, F, pelletizer, G, the desulfuration solution preparation facilities, P1, the 1# circulating pump, P2, the 2# circulating pump, P3, the 3# circulating pump, P4, the pump of sizing mixing, S, upper hose, XJ, the desulfuration solution circulation pipe, SJ, the desulfuration solution conveyance conduit, PJ, the slurries discharge pipe, LY, filtrate pipe, CX, filling pipe, Q, air hose, PS, the spray circulation pipe, JY, the loop slurry pipe, 1, conical bottom, 2, gas approach, 3, tower body, 4, the dedusting spray equipment, 5, blister bottom, 6, bubble-cap formula flue gas tedge, 61, short tube for the flue gas rising, 62, the flue gas bubble-cap, 7, the desulfuration solution spray equipment, 8, mist eliminator, 9, the taper outlet, 10, the cap type cover body, 11, the slurries outlet, 12, leakage fluid dram.
The specific embodiment
Referring to Fig. 1～Fig. 4, two step method non helping hand sintering machine desulfuration purifier of the present utility model comprises desulfurization reaction tower A, the dedusting circulatory system, desulphurization circulating system.
The structure of described desulfurization reaction tower A is (referring to Fig. 2～Fig. 4) be: be connected with the upper end in the upper end of the tower body 3 of tubular and be small-bore taper outlet 9, cap type cover body 10 is housed above this taper outlet 9.Be provided with the blister bottom 5 that is obliquely installed at the middle part of described tower body 3, tower body 3 is divided into two parts up and down, on this blister bottom 5, be provided with a plurality of bubble-cap formula flue gas tedges 6.The zone up and down of this blister bottom 5 is respectively desulfurization reaction zone A1 and water washing dedust district A2, on the top of this desulfurization reaction zone A1 and water washing dedust district A2 described desulfuration solution spray equipment (floor) 7 and dedusting spray equipment (floor) 4 is housed respectively.Be provided with a slurries outlet 11 that passes tower body 3 in the least significant end of this blister bottom 5, the desulfuration solution of the circulation of desulfurization reaction zone A1 can be discharged smoothly.In the bottom of described tower body 3 conical bottom 1 is housed, is provided with leakage fluid dram 12 at the lowermost end of the central authorities of this conical bottom 1.
Bottom (conical bottom 1 top) at described tower body 3 is provided with gas approach 2, these gas approach 2 usefulness pipelines be connected with the sintering air-introduced machine (not shown) when using.The axle center of described gas approach 2 enters in the described tower body 3 for downward-sloping 5～10 °.
By coaxial being formed by connecting of cone 32 transition (also can being made of the reducing cylindrical shell more than two sections), described blister bottom 5 is located at the top of the hypomere cylindrical shell 33 of this tower body 3 to described tower body 3 by the different cylindrical shell 31,33 of two sections diameter.
Described cap type cover body 10 is made up of cone-shaped hood 101 and smoke exhaust pipe 102; the diameter of big mouthful (down) of cone-shaped hood 101 is greater than the upper end diameter of described taper outlet 9; connect smoke exhaust pipe 102 at the top of this cone-shaped hood 101 osculum; can guarantee that exhaust is unimpeded, can not protect again to be entered in the tower by heavy rain.
Described bubble-cap formula flue gas tedge 6 comprises short tube 61 and flue gas bubble-cap 62, on described blister bottom 5, flow and flow speed characteristic according to flue gas, a plurality of flue gas openings are set, above each this flue gas opening, all connect a short tube 61, a flue gas bubble-cap 62 is installed above this short tube 61.Through the flue gas of water washing dedust district A2 dedusting below blister bottom 5 through short tube 61 upwards, and walk around flue gas bubble-cap 62 and enter desulfurization reaction zone A1, this flue gas bubble-cap 62 can prevent that the desulfuration solution of desulfurization reaction zone A1 spray from falling into following water washing dedust district A2.
Be provided with streamlined mist eliminator 8 (referring to Fig. 1) above described desulfurization reaction zone, mist eliminator 8 is a prior art, mainly contains broken line shape and streamlined two big classes, adopts broken line shape herein.
Described dedusting cyclic system turnkey 1# water circulating pump and precipitation slag tank B, the inlet B3 on precipitation slag tank B top is connected with the leakage fluid dram 12 of described desulfurization reaction tower A bottom, the purified liquor outlet B1 on precipitation slag tank B top is connected with the inlet of pipeline with 1# water circulating pump P1 by valve, and the outlet of this 1# water circulating pump P1 is connected with the interface of the dedusting spray equipment 4 of described desulfurization reaction tower A bottom by spray circulation pipe PS.This dedusting circulatory system is the auxiliary equipment in first step water washing dedust stage in the desulfurization reaction tower A, forms a closed circuit circulatory system with water washing dedust district A2, and the precipitable recovery of dust granules things such as iron oxide of removing in the flue gas is used.
Described desulphurization circulating system comprises aeration oxidation pond C, Roots blower D, dewaterer E, desulfuration solution preparation facilities G, desulfuration recycle pump P2 and P3, pump P4 sizes mixing, the outlet of Roots blower D is connected by the interior aerator of air hose Q and aeration oxidation pond C, and the desulfuration solution outlet C1 of aeration oxidation pond C bottom is connected with the interface of the desulfuration solution spray equipment 7 on described desulfurization reaction tower A top by desulfuration recycle pump P2, P3.Between the upper and lower side of this aeration oxidation pond C, be connected with dewaterer E by filtrate pipe LY.Desulfuration solution preparation facilities G carries the desulfuration solution of spray usefulness in described aeration oxidation pond C by the pump P4 that sizes mixing.This desulphurization circulating system is the auxiliary equipment in the second desulphurization reaction stage in step in the desulfurization reaction tower, forms a closed circuit circulatory system with described desulfurization reaction zone A1, and the desulfuration byproduct of dewaterer E output is a gypsum.
Described dedusting spray equipment 4 and desulfuration solution spray equipment 7 are formed by a plurality of shower nozzles, and dedusting spray equipment 4 is used for the dust granules things such as iron oxide of washing, purifying flue dust, and the dust granules thing can fully utilize through precipitation after discharging with recirculated water.Desulfuration solution spray equipment 7 is used for washing and is cleaned sulfur in smoke, through the product behind the desulphurization reaction is calcium sulfite, along with slurries are discharged from slurries outlet 11, and enter and carry out the aeration oxidation reaction in the aeration oxidation pond C and generate calcium sulfate (gypsum), this calcium sulfate is processed as the gypsum product of sphere-like through the dewaterer E discharge of constantly dewatering by pelletizer F.
Described tower body 3 constitutes by steel plate and anticorrosive coat or by all steel, and can be provided with inspection opening (not shown) at tower body 3 diverse locations.Described tower body 3 all is connected with flange with the water route with the gas circuit in the external world.
When operation, the outlet 12 of tower body 3 bottoms is drained into the pulp water of collecting among the precipitation slag tank B.After pulp water was clarified in precipitation slag tank B, supernatant carried out circulated sprinkling by 1# circulating pump P1 pump water washing dedust district A2 of bottom in the desulfurization tower body A.Described precipitation slag tank B is made by steel plate, and the bottom is provided with slag-drip opening B2.
When operation, the slurries that described slurries outlet 11 is discharged enter among the aeration oxidation pond C, subsequently by Roots blower D blast aeration oxidation, are provided with the outlet C1 that links to each other with recycle slurry liquid pump (circulating pump P2, P3) in aeration oxidation pond C bottom.Described 2#, 3# recycle slurry liquid pump P2 and P3 extract the spray equipment 7 that slurries pump into desulfurization reaction zone out from described aeration oxidation pond C.The desulfuration solution that is oxidized to calcium sulfate enters the separation of dewatering the dewaterer E from aeration oxidation pond C bottom.The water that leaches turns back in the aeration oxidation pond C, and the calcium sulphate solid after the dehydration is sent into and made the ball recycling among the pelletizer F.
Described desulfuration solution is the slurries of preparing behind the quicklime slaking, and its weight concentration is 10%～15%.
Described aeration oxidation pond C is made by steel plate, is connected with each water route all to adopt flange to connect.The pipeline that is connected with circulating pump P2, P3 is equipped with valve.
Described aeration oxidation pond C constantly replenishes slurries by desulfuration solution preparation (lime is sized mixing) the device G and the pump P4 that sizes mixing.And carry out moisturizing by filling pipe CX.The purposes of upper hose S is the water consumption that replenishes in aeration oxidation pond C because of system's operation is evaporated and desulfurated plaster is taken away.
With reference to figure 1, workflow of the present utility model is:
The first step: connect the flue gas that introducing needs purification by by-pass line from sintering air-introduced machine (not shown) outlet, enter the water washing dedust district A2 of bottom in the desulfurization reaction tower A from gas approach 2, the water that sprays with dedusting spray equipment 4 in this water washing dedust district A2 or the aqueous solution that contains a small amount of sodium carbonate contact and carry out pre-dedusting, remove the dust granules thing that is mingled with in the flue gas.Carry leakage fluid dram 12 and the slurries discharge pipe PJ discharge of the slurries of the dust granules thing that is mingled with in the described flue gas from the desulfurization reaction tower bottom, the clear liquid through precipitating and isolating is for recycling.
Second step: the desulfurization reaction zone A1 that the flue gas tedge 6 of the flue gas after the dedusting by the bubble-cap formula enters desulfurization reaction tower A internal upper part carries out desulphurization reaction, the desulfuration solution that sprays with the desulfuration solution spray equipment 7 of desulfurization reaction zone A1 contacts the generation chemical reaction, removes sulfur dioxide after the taper outlet 9 of described desulfurization reaction tower A cat head enters atmosphere.Solution behind the desulphurization reaction is made the solid gypsum through dehydration again through aeration oxidation reaction production gypsum solution.
Claims (8)
1. two step method non helping hand sintering machine desulfuration purifier, it is characterized in that: comprise desulfurization reaction tower, the dedusting circulatory system and desulphurization circulating system, be provided with desulfurization reaction zone on desulfurization reaction tower top, the interface that is located at the desulfuration solution spray equipment on this desulfurization reaction zone top is connected with the desulfuration solution outlet of desulphurization circulating system, and the slurries outlet that is located at this desulfurization reaction zone bottom is connected with the inlet of desulphurization circulating system; Be provided with the water washing dedust district in the bottom of described desulfurization reaction tower, on the top in this water washing dedust district the dedusting spray equipment is housed, the purified liquor outlet of the described dedusting circulatory system is connected with the leakage fluid dram that is located at this desulfurization reaction tower bottom with the interface of this dedusting spray equipment respectively with inlet; The interface that is located at this dedusting spray equipment is connected with the air-introduced machine outlet of sintering machine by pipeline with gas approach between this desulfurization reaction tower bottom.
2. two step method non helping hand sintering machine desulfuration purifier according to claim 1, it is characterized in that: described dedusting cyclic system turnkey 1# water circulating pump and precipitation slag tank, the inlet on precipitation slag tank top is connected with the leakage fluid dram of described desulfurization reaction tower bottom, the purified liquor outlet on precipitation slag tank top is connected with the inlet of pipeline with the 1# water circulating pump by valve, and this 1# recirculated water delivery side of pump is connected with the interface of described dedusting spray equipment; This dedusting circulatory system and described water washing dedust district form a closed circuit circulatory system.
3. two step method non helping hand sintering machine desulfuration purifier according to claim 1, it is characterized in that: described desulphurization circulating system comprises the aeration oxidation pond, Roots blower, dewaterer, desulfuration solution preparation facilities, desulfuration recycle pump and the pump of sizing mixing, aerator in the outlet of Roots blower and the aeration oxidation pond is connected, and the desulfuration solution of aeration oxidation pond bottom exports and is connected by the interface of desulfuration recycle pump with described desulfuration solution spray equipment; Between the upper and lower side of this aeration oxidation pond, be connected with dewaterer; The desulfuration solution preparation facilities is connected with described aeration oxidation pond by the pump of sizing mixing; This desulphurization circulating system and described desulfurization reaction zone form a closed circuit circulatory system.
4. two step method non helping hand sintering machine desulfuration purifier according to claim 1, it is characterized in that: the structure of described desulfurization reaction tower is: be connected with the upper end in the upper end of the tower body of tubular and be small-bore taper outlet, the cap type cover body is housed above this taper outlet; Be provided with the blister bottom that is obliquely installed at the middle part of described tower body, on this blister bottom, be provided with a plurality of bubble-cap formula flue gas tedges; The zone up and down that this blister bottom is separated is respectively described desulfurization reaction zone and water washing dedust district, on the top in this desulfurization reaction zone and water washing dedust district described desulfuration solution spray equipment and dedusting spray equipment is housed respectively; Be provided with a slurries outlet that passes tower body at the lowest part of this blister bottom; Conical bottom is equipped with in bottom at described tower body, is provided with described leakage fluid dram in the bottom of this conical bottom; The axle center of described gas approach enters in the described tower body for downward-sloping 5～10 °.
5. two step method non helping hand sintering machine desulfuration purifier according to claim 4 is characterized in that: described tower body is formed by connecting by the cone transition is coaxial by the different cylindrical shell of two sections diameter; Described blister bottom is located at the top of the hypomere cylindrical shell of this tower body.
6. two step method non helping hand sintering machine desulfuration purifier according to claim 4, it is characterized in that: described cap type cover body is made up of cone-shaped hood and smoke exhaust pipe, big mouthful of diameter of cone-shaped hood connects smoke exhaust pipe greater than the upper end diameter of described taper outlet at the top of this cone-shaped hood osculum.
7. two step method non helping hand sintering machine desulfuration purifier according to claim 4, it is characterized in that: described bubble-cap formula flue gas tedge comprises short tube and flue gas bubble-cap, on described blister bottom, be provided with a plurality of flue gas openings, above each this flue gas opening, connect a short tube, a flue gas bubble-cap is installed above this short tube.
8. two step method non helping hand sintering machine desulfuration purifier according to claim 4 is characterized in that: be provided with mist eliminator above described desulfurization reaction zone.
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|---|---|---|---|
| CN2009202463765U CN201534056U (en) | 2009-10-13 | 2009-10-13 | Two-step-method unpowered sintering machine desulfuration and purification device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009202463765U CN201534056U (en) | 2009-10-13 | 2009-10-13 | Two-step-method unpowered sintering machine desulfuration and purification device |
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| CN201534056U true CN201534056U (en) | 2010-07-28 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102380308A (en) * | 2010-09-03 | 2012-03-21 | 鞍钢集团工程技术有限公司 | Sintering flue gas desulfurization and purification method and equipment |
| CN105148667A (en) * | 2015-09-11 | 2015-12-16 | 永清环保股份有限公司 | High-efficiency desulfuration and dedusting system for flue gas purification |
| CN106215612A (en) * | 2016-08-30 | 2016-12-14 | 中冶华天工程技术有限公司 | A kind of honeycomb fashion intermediate row hydrophone |
| CN110882608A (en) * | 2019-11-27 | 2020-03-17 | 攀枝花市蓝鼎环保科技有限公司 | Flue gas desulfurization dust removal defogging coupled system |
-
2009
- 2009-10-13 CN CN2009202463765U patent/CN201534056U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102380308A (en) * | 2010-09-03 | 2012-03-21 | 鞍钢集团工程技术有限公司 | Sintering flue gas desulfurization and purification method and equipment |
| CN105148667A (en) * | 2015-09-11 | 2015-12-16 | 永清环保股份有限公司 | High-efficiency desulfuration and dedusting system for flue gas purification |
| CN106215612A (en) * | 2016-08-30 | 2016-12-14 | 中冶华天工程技术有限公司 | A kind of honeycomb fashion intermediate row hydrophone |
| CN110882608A (en) * | 2019-11-27 | 2020-03-17 | 攀枝花市蓝鼎环保科技有限公司 | Flue gas desulfurization dust removal defogging coupled system |
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