CN218795069U - Flue gas desulfurization device - Google Patents
Flue gas desulfurization device Download PDFInfo
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- CN218795069U CN218795069U CN202221399544.6U CN202221399544U CN218795069U CN 218795069 U CN218795069 U CN 218795069U CN 202221399544 U CN202221399544 U CN 202221399544U CN 218795069 U CN218795069 U CN 218795069U
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Abstract
The utility model discloses a flue gas desulfurization device, include: the desulfurization tower comprises a spiral-flow plate desulfurization tower, wherein an air inlet and an air outlet are formed in the spiral-flow plate desulfurization tower, sulfur-containing flue gas is communicated with the spiral-flow plate desulfurization tower through the air inlet, and purified flue gas is discharged through a chimney through the air outlet; the alkali supply system is connected with the spiral-flow plate desulfurization tower, the alkali supply system is connected with a regeneration reaction tank, the regeneration reaction tank is connected with a sedimentation tank, the sedimentation tank is connected with a spiral-flow concentrator and a desulfurization solution tank, an adhesive tape vacuum dehydrator is connected between the spiral-flow concentrator and the desulfurization solution tank, and the desulfurization solution tank is connected with the spiral-flow plate desulfurization tower. To the utility model discloses, the swirler concentrator can get into the dehydration of sticky tape vacuum filter with the calcium sulfate separation that the sediment got off, and the desulfurizer can flow into once more and carries out the desulfurization to sulfur dioxide in the whirl board desulfurizing tower, has improved the rate of utilization of desulfurizer, has reached resource reuse's effect.
Description
Technical Field
The utility model relates to a flue gas desulfurization technical field, in particular to flue gas desulfurization device.
Background
The existing flue gas desulfurization technology generally adopts a double subtraction method, a double alkali method is to carry out in-tower desulfurization by adopting a sodium-based desulfurizer, and the problem of scaling and blockage caused by supersaturated crystallization can be avoided due to the strong alkalinity of the sodium-based desulfurizer and the high solubility of a reaction product after sulfur dioxide is absorbed. On the other hand, the desulfurization product is discharged into a regeneration tank to be reduced and regenerated by calcium hydroxide, and the regenerated sodium-based desulfurizer is pumped back to the desulfurization tower to be recycled. The dual-alkali desulfurization process reduces the investment and the operating cost, and is more suitable for desulfurization modification of small and medium boilers. However, the automation in the process of preparing the calcium base is low, the preparation effect is poor, and the desulfurizer is not sufficiently reacted with the flue gas after being pumped back into the sulfur tower, so that the flue gas desulfurization effect is poor.
Thus, the prior art has yet to be improved and enhanced.
SUMMERY OF THE UTILITY MODEL
In view of the foregoing disadvantages of the prior art, the present invention is directed to a flue gas desulfurization device, which can ensure the relative stability of the desulfurization dosage and concentration of the circulating liquid, and can achieve the best desulfurization effect as much as possible in the desulfurization process of the sulfur tower.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a flue gas desulfurization apparatus comprising:
the desulfurization tower comprises a spiral-flow plate desulfurization tower, wherein an air inlet and an air outlet are formed in the spiral-flow plate desulfurization tower, sulfur-containing flue gas is communicated with the spiral-flow plate desulfurization tower through the air inlet under the traction of a fan, the purified flue gas is discharged through a chimney through the air outlet, two layers of demisters and three layers of spraying layers are arranged in the spiral-flow plate desulfurization tower, and a plurality of nozzles are arranged on the spraying layers;
a base supply system comprising: the system comprises a regeneration reaction tank, an oxygen compression device, a calcium alkali supply device, a sodium alkali storage tank, a sedimentation tank and a desulfurization solution tank, wherein the alkali supply system is connected with the rotational flow plate desulfurization tower, the alkali supply system supplies a desulfurizer for absorbing sulfur dioxide in flue gas to the rotational flow plate desulfurization tower, the regeneration reaction tank is communicated with the rotational flow plate desulfurization tower, the regeneration reaction tank is connected with the oxygen compression device, oxygen is introduced to enable the regeneration reaction tank to react fully, an inlet of the regeneration reaction tank is connected with the calcium alkali supply device and the sodium alkali storage tank and is used for enabling the amount and concentration of the desulfurizer in the regeneration reaction tank to be relatively stable, an outlet of the regeneration reaction tank is connected with the sedimentation tank, an outlet of the sedimentation tank is connected with the desulfurization solution tank, and the desulfurization solution tank and the rotational flow plate desulfurization tower are communicated with the rotational flow plate desulfurization tower through the air inlet;
the cyclone concentrator, the cyclone concentrator with the entry intercommunication of sedimentation tank, the export of sedimentation tank pass through the force pump with the cyclone concentrator links to each other, the cyclone concentrator links to each other there is sticky tape vacuum dehydration machine, sticky tape vacuum dehydration machine with the desulfurization solution pond links to each other, the calcium sulfate process that the sedimentation tank deposit gets down get into sticky tape vacuum filter dehydration after the cyclone concentrator separation, then get into desulfurization solution pond recycle.
Further, the calcium-alkali supply device comprises a calcium oxide storage bin, calcium oxide enters the calcium oxide storage bin through pipeline conveying, the calcium oxide storage bin is connected with an automatic spiral feeder, the automatic spiral feeder is connected with a seasoning tank, and the seasoning tank is communicated with an inlet of the regeneration reaction tank.
Further, the screw feeder comprises a feeding groove, and the feeding groove is provided with a screw rod for stirring calcium oxide.
Further, the distance between a demister closest to the air inlet of the cyclone plate desulfurization tower and the air inlet is 1.2m, the height of the demister is 2m, the distance from the uppermost spraying layer to the demister is 2.5m, the distance between the first spraying layer and the air inlet is 5m, and the distance between the spraying layers is 2m.
Further, the nozzle is a spiral nozzle.
Further, the nozzle is a corundum nozzle.
Furthermore, the inner layer of the swirl plate desulfurization tower is a granite tower wall.
Further, the demister is a roof-type demister.
Compared with the prior art, the utility model provides a flue gas desulfurization device, in the calcium alkali preparation process, adopt spiral automatic feeder to improve the efficiency of calcium alkali preparation, just the swirler concentrator can with the calcium sulfate separation that the sedimentation tank subsides gets into the dehydration of sticky tape vacuum filter to the concentration of desulfurizer has been guaranteed, makes the desulfurizer be in can with the better reaction of sulfur dioxide in the flue gas in the whirl board desulfurizing tower, thereby reach the desulfurization effect who has improved the whirl board desulfurizing tower.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the flue gas desulfurization device provided by the present invention.
In the figure: the device comprises a cyclone plate desulfurizing tower-10, flue gas-11, an induced draft fan-12, a chimney-13, an alkali supply system-20, a regeneration reaction tank-21, a calcium alkali supply device-22, a sodium alkali storage tank-23, a sedimentation tank-24, a desulfurization solution tank-25, a cyclone concentrator-30, a rubber belt vacuum filter-40, a calcium oxide storage bin-221, a spiral automatic feeder-222 and a size mixing tank-223.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1, the utility model provides a flue gas 11 desulphurization unit, include: spiral-flow plate desulfurizing tower 10, be provided with air inlet and gas outlet on the spiral-flow plate desulfurizing tower 10, contain the sulfur flue gas 11 under draught fan 12 pull through the air inlet with spiral-flow plate desulfurizing tower 10 intercommunication contains that sulfur flue gas 11 enters into during the inside of spiral-flow plate desulfurizing tower 10, sulfur dioxide in the sulfur flue gas 11 can be reacted and fall, and the flue gas 11 after being purified is discharged through chimney 13 through the gas outlet.
A base supply system 20, comprising: the desulfurization tower comprises a regeneration reaction tank 21, an oxygen compression device, a calcium alkali supply device 22, a sodium alkali storage tank 23, a sedimentation tank 24 and a desulfurization solution tank 25, wherein the alkali supply system 20 is connected with the swirl plate desulfurization tower 10, the sodium alkali supply system 20 supplies a desulfurization agent for absorbing sulfur dioxide in flue gas 11 to the swirl plate desulfurization tower 10, the regeneration reaction tank 21 is communicated with the swirl plate desulfurization tower 10, the regeneration reaction tank 21 is connected with the oxygen compression device, oxygen is introduced to enable the regeneration reaction tank 21 to react fully, the main function of the regeneration reaction tank is to oxidize calcium sulfite into gypsum on site and stir the gypsum uniformly, an inlet of the regeneration reaction tank 21 is connected with the calcium alkali supply device 22 and the sodium alkali storage tank for ensuring that the desulfurization dosage and concentration in the regeneration reaction tank 21 are relatively stable, an outlet of the regeneration reaction tank 21 is connected with the sedimentation tank 24, the regeneration reaction tank 21 is used for reacting alkali with sulfate ions, finally the reacted solution flows into the sedimentation tank 24 for sedimentation, an outlet of the sedimentation tank 24 is connected with the desulfurization solution tank 25, the supernatant of the sedimentation tank 24 contains more calcium alkali and sodium sulfate ions, the desulfurization solution flows into the swirl plate desulfurization tower 10 through the swirl plate desulfurization tower 10 to avoid the desulfurization alkali and the desulfurization solution tank 25 to be communicated with the desulfurization solution tank 10. The cyclone concentrator 30, the cyclone concentrator 30 with the entry intercommunication of sedimentation tank 24, the export of sedimentation tank 24 pass through the force pump with the cyclone concentrator 30 links to each other, the cyclone concentrator 30 links to each other there is sticky tape vacuum dehydration machine, sticky tape vacuum dehydration machine with desulfurization solution pond 25 links to each other, the calcium sulfate warp that sedimentation tank 24 subsides gets into sticky tape vacuum filter 40 after the separation of cyclone concentrator 30 and dewaters, sticky tape vacuum filter 40 can go out calcium sulfate and the separation of water in the precipitate, draws calcium alkali and soda, then gets into desulfurization solution pond 25 recycle.
Compared with the prior art, the utility model provides a 11 desulphurization unit of flue gas, automatic screw feeder 222 can realize the automatic production calcium alkali, and production efficiency is high, the whirl concentrator 30 with sticky tape vacuum dehydration machine can carry out dehydration to the precipitate of sedimentation tank 24 for alkali in the precipitate flows in reuse has saved manufacturing cost among the desulfurization solution pond 25, the desulfurizer that breaks away from among the solution pond can flow in the sulfur dioxide to among the flue gas 11 is desulfurized among the whirl board desulfurizing tower 10, has improved the rate of utilization of desulfurizer among the whole desulphurization unit greatly, has reached resource reuse's effect, and economic benefits is good.
In some embodiments, the calcium alkali supply device 22 includes a calcium oxide storage bin 221, calcium oxide enters the calcium oxide storage bin 221 through a pipeline, the calcium oxide storage bin 221 is connected to an automatic screw feeder 222, the automatic screw feeder 222 is used for crushing and grinding calcium oxide into separate components to facilitate the subsequent work to dissolve calcium oxide, the automatic screw feeder 222 is connected to a slurry mixing tank 223, the slurry mixing tank 223 is connected to a water supply device, the slurry mixing tank 223 is used for reacting powdered calcium oxide with water to generate calcium hydroxide, the slurry mixing tank 223 is communicated with an inlet of the regeneration reaction tank 21, and calcium hydroxide in the slurry mixing tank 223 is conveyed into the regeneration reaction tank 21 through a pressure pump to perform a chemical reaction.
Specifically, automatic screw feeder 222 includes the feed trough, the feed trough is provided with the hob that is used for stirring calcium oxide, the hob can be better smash the grinding with the calcium oxide of solid.
In some embodiments, two demister layers and three spraying layers are disposed inside the cyclone plate desulfurization tower 10, the demister mainly comprises fixing devices such as corrugated blades, plates, clamping strips, etc., and the plates are usually made of two main materials, i.e., high polymer materials (such as polypropylene PP, etc.) or stainless steel, and are generally classified into streamline types and broken line types. The demister is a roof-type demister, the principle of the roof-type demister is used for liquid drops carried by gas in the separation tower, valuable material loss is reduced, and the spraying layer enables sulfur dioxide in the flue gas 11 to be in more sufficient contact with the desulfurizer, so that a better desulfurization effect is achieved.
Preferably, the height of the spiral-flow plate desulfurization tower 10 is favorable for demisting, in order to achieve a better spraying effect and facilitate maintenance, the distance between a demister closest to the air inlet of the spiral-flow plate desulfurization tower 10 and the air inlet is 1.2m, the height of the demister is 2m, the distance between the uppermost layer of the spray layer and the demister is 2.5m, the distance between the first layer of the spray layer and the air inlet is 5m, and the distance between the spray layers is 2m.
Furtherly, it is provided with a plurality of nozzles on the layer to spray, the nozzle is the screw-tupe nozzle, and the material is the splendid corundum material of wear resistance, and atomizing angle 120 degrees, nozzle corrosion resistance, be difficult to the jam, comprehensive atomization effect is good, does not drip.
Further, the inside of the spiral-flow plate desulfurizing tower 10 is made of granite, and is hard in texture and corrosion-resistant.
To sum up, the utility model provides a flue gas desulfurization device in the whirl board desulfurizing tower, sulfur dioxide in the flue gas can take place chemical reaction with the desulfurizer and realize desulfurated effect, be provided with roof formula defroster in the whirl board desulfurizing tower and spray the layer, it is provided with the nozzle on the layer to spray, makes the sulfur dioxide be in more abundant with the reaction of desulfurizer in the whirl board desulfurizing tower, desulfurization effect is better, automatic stirring calcium oxide can be realized to the automatic screw feeder among the calcium alkali feeding device, makes it smash and makes the lime-alkali, and degree of automation is high, the calcium sulfate warp that the sedimentation tank subsides gets off gets into sticky tape vacuum filter dehydration after the separation of whirl concentrator, then gets into desulfurization solution tank recycle has improved the rate of utilization of desulfurizer among the whole desulfurizing device greatly, has reached resource reuse's effect, and economic benefits is good.
The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, and these forms are within the scope of the present invention.
Claims (8)
1. Flue gas desulfurization device, its characterized in that includes:
the desulfurization tower comprises a spiral-flow plate desulfurization tower, wherein an air inlet and an air outlet are formed in the spiral-flow plate desulfurization tower, sulfur-containing flue gas is communicated with the spiral-flow plate desulfurization tower through the air inlet under the traction of a fan, the purified flue gas is discharged through a chimney through the air outlet, two layers of demisters and three layers of spraying layers are arranged in the spiral-flow plate desulfurization tower, and a plurality of nozzles are arranged on the spraying layers;
a base supply system comprising: the system comprises a regeneration reaction tank, an oxygen compression device, a calcium alkali supply device, a sodium alkali storage tank, a sedimentation tank and a desulfurization solution tank, wherein the alkali supply system is connected with the rotational flow plate desulfurization tower, the alkali supply system supplies a desulfurizer for absorbing sulfur dioxide in flue gas to the rotational flow plate desulfurization tower, the regeneration reaction tank is communicated with the rotational flow plate desulfurization tower, the regeneration reaction tank is connected with the oxygen compression device, oxygen is introduced to enable the regeneration reaction tank to react fully, an inlet of the regeneration reaction tank is connected with the calcium alkali supply device and the sodium alkali storage tank and is used for enabling the amount and concentration of the desulfurizer in the regeneration reaction tank to be relatively stable, an outlet of the regeneration reaction tank is connected with the sedimentation tank, an outlet of the sedimentation tank is connected with the desulfurization solution tank, and the desulfurization solution tank and the rotational flow plate desulfurization tower are communicated with the rotational flow plate desulfurization tower through the air inlet;
the cyclone concentrator, the cyclone concentrator with the entry intercommunication of sedimentation tank, the export of sedimentation tank pass through the force pump with the cyclone concentrator links to each other, the cyclone concentrator links to each other there is sticky tape vacuum dehydration machine, sticky tape vacuum dehydration machine with the desulfurization solution pond links to each other, the calcium sulfate warp that the sedimentation tank subsides gets off gets into sticky tape vacuum filter dehydration after the cyclone concentrator separation, later gets into desulfurization solution pond recycle.
2. The flue gas desulfurization device of claim 1, wherein the calcium-alkali supply device comprises a calcium oxide storage bin, calcium oxide enters the calcium oxide storage bin through pipeline conveying, the calcium oxide storage bin is connected with an automatic screw feeder, the automatic screw feeder is connected with a seasoning tank, and the seasoning tank is communicated with an inlet of the regeneration reaction tank.
3. The flue gas desulfurization apparatus according to claim 2, wherein the screw feeder includes a feed trough provided with a screw rod for stirring calcium oxide.
4. The flue gas desulfurization device according to claim 1, wherein a distance between a demister closest to the gas inlet of the swirl plate desulfurization tower and the gas inlet is 1.2m, a height of the demister is 2m, a distance from the uppermost spraying layer to the demister is 2.5m, a distance between the first spraying layer and the gas inlet is 5m, and a distance between the spraying layers is 2m.
5. The flue gas desulfurization device of claim 1, wherein the inner layer of the swirl plate desulfurization tower is a granite tower wall.
6. The flue gas desulfurization apparatus of claim 1, wherein the demister is a roof top demister.
7. The flue gas desulfurization apparatus according to claim 1, wherein the nozzle is a screw-type nozzle.
8. The flue gas desulfurization device of claim 1, wherein the nozzle is a corundum nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221399544.6U CN218795069U (en) | 2022-06-07 | 2022-06-07 | Flue gas desulfurization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221399544.6U CN218795069U (en) | 2022-06-07 | 2022-06-07 | Flue gas desulfurization device |
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| CN218795069U true CN218795069U (en) | 2023-04-07 |
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| CN202221399544.6U Active CN218795069U (en) | 2022-06-07 | 2022-06-07 | Flue gas desulfurization device |
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- 2022-06-07 CN CN202221399544.6U patent/CN218795069U/en active Active
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