CN202237782U - Dual-cavity smoke desulfurization device using multi-absorption wet method - Google Patents
Dual-cavity smoke desulfurization device using multi-absorption wet method Download PDFInfo
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- CN202237782U CN202237782U CN2011203747920U CN201120374792U CN202237782U CN 202237782 U CN202237782 U CN 202237782U CN 2011203747920 U CN2011203747920 U CN 2011203747920U CN 201120374792 U CN201120374792 U CN 201120374792U CN 202237782 U CN202237782 U CN 202237782U
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Abstract
The utility model discloses a dual-cavity smoke desulfurization device using a multi-absorption wet method. The smoke desulfurization device mainly comprises a first atomization absorption chamber, a second atomization absorption chamber, a smoke transition channel and a slurry pool. A first atomization spraying layer is arranged inside the first atomization absorption chamber, and primary fine desulfurization is carried out on SO2 in smoke by spraying superfine desulfurizing agent; a liquid-gas absorption surface is additionally arranged on the smoke transition channel on the basis of connecting the smoke so as to strengthen the sedimentation rate of impurities in the smoke; a guide plate is mounted at the bottom of the second atomization absorption chamber so as to improve a smoke flow status and reduce flowing dead areas; a second atomization spraying layer is arranged in the middle of the second atomization absorption chamber for carrying out secondary smoke desulfurization on one hand and capturing thin mist drops in the smoke on the other hand; a demister can demist the finally desulfurized smoke and the demisted smoke is discharged out of a desulfurization tower through a smoke outlet. After the multi-absorption, the efficient desulfurization effect is achieved. The utility model can be used for smoke desulfurization in industries, such as thermal power generation, metallurgy, petrifaction and the like.
Description
Technical field
The utility model relates to the large flue gas desulfurization field, is specifically related to a kind of pair of multiple absorption wet flue gas desulfurizer in chamber.
Background technology
It is the subject matter of China's air environmental pollution that SO2 pollutes, and is the important environmental factor of the economic stable coordination development of restriction China.The source of SO2 in China's atmosphere mainly is a coal burning, and its discharge capacity accounts for more than 90% of total release, causes that thus the area of China's acid rain constantly enlarges.Up to the present, many SO2 control technologys of various countries researcher research and development, wherein lime/lime stone-gypsum wet flue gas desulfurizing technology is a mature technique the most at present.This method uses achievement many, stable, and desulfuration efficiency is high, is accepted extensively and uses by all trades and professions.But also there are some shortcomings in it, mainly is that investment cost is higher, and in service big to the liquid-gas ratio requirement, the consumption of power and water is many.
According to knowing to thermal power plant wet process of FGD technical Analysis; The key reaction of this technology is carried out in the absorption tower; Send into the desulfurizing agent-lime stone slurry on absorption tower and contact mixing with the flue gas that after the GGH cooling, gets into the absorption tower; Chemical reaction takes place in SO2 in the flue gas and the CaCO3 in the desulfurizer slurry and the airborne O2 that blasts, and generates gypsum (CaSO42H2O); Flue gas after the desulfurization enters atmosphere through chimney after removing droplet, GGH heat temperature raising through demister successively.
The core of wet desulfurizing process is the absorption tower, and the layout on absorption tower is divided into uptake zone, desulfurization product zoneofoxidation and removes the fog-zone according to concrete function.SO2 in the flue gas contacts with absorption liquid in the uptake zone and is absorbed; Remove the fog-zone with flue gas and drop separation; Absorbing the calcium sulfite product that generates behind the SO2 is calcium sulfate in the air oxidation that zoneofoxidation is further blasted in the tower.Different reaction towers adopts the design of differing absorption district, reaches different desulfurized effects.Existing reaction tower uptake zone adopts slurries in top spray, tower, to arrange arrangements such as grid, Ta Neibu tray, jet bubbling or bottom liquid column-spraying usually, wherein sprays desulfuration absorbing tower and is widely used because of technology maturation, less scaling obstruction.
But in the spray process,, must build jumbo absorption tower on the one hand to guarantee that flue gas has enough stops and reaction time in tower in order to satisfy the high efficiency of desulfurization; Many large-scale slurry circulating pumps and a plurality of pressure jet apparatus must be set on the other hand.Because the desulfurizing agent atomizing particle size must be arranged a plurality of spraying layers and nozzle generally at 1000 μ m-3000 μ m when adopting mechanical atomization, and through slurry circulating pump with the desulfurizing agent spraying that repeatedly circulates, cause the desulfurization energy consumption to remain high.
Summary of the invention
In order to overcome the shortcoming and defect of prior art; The utility model provides a kind of pair of multiple absorption wet flue gas desulfurizer in chamber; Under the prerequisite that does not reduce desulfuration efficiency, can reduce the quantity of slurry circulating pump and exert oneself the raising flue gas flow rate; Reduce the volume of desulfurizing tower, increase the stop reaction time of flue gas.
The utility model is realized through following technical proposals:
A kind of pair of multiple absorption wet flue gas desulfurizer in chamber; The atomizing absorption chamber that comprises the slurries pond and be arranged on top, slurries pond; Said slurries pond, atomizing absorption chamber are interconnected; Said atomizing absorption chamber comprises the first atomizing absorption chamber, the second atomizing absorption chamber, and the internal cavity of the said first atomizing absorption chamber is less than the internal cavity of the second atomizing absorption chamber, and the upper space in said slurries pond constitutes the flue gas turnover passage of the first atomizing absorption chamber and the second atomizing absorption chamber; The top of the said first atomizing absorption chamber is provided with smoke inlet, and the top of the said second atomizing absorption chamber is provided with exhanst gas outlet.
Said slurries pond also includes oxidation air inlet, desulfurization slurry inlet, oxidation product outlet; On the sidewall in the slurries pond that said oxidation air enters the mouth, the desulfurization slurry inlet is opened in the first atomizing absorption chamber lower end; Said oxidation product outlet is opened on the sidewall in slurries pond of the second atomizing absorption chamber lower end.
Be provided with the first atomizing spray layer in the said first atomizing absorption chamber, the injection direction of the said first atomizing spray layer is for upwards perhaps downwards; It is the nozzle below the 300 μ m that the said first atomizing spray layer adopts the particle diameter of atomized particles.
Be provided with the second atomizing spray layer in the said second atomizing absorption chamber, said second atomizing spray layer and exhanst gas outlet are provided with demister.
Be provided with deflector between the flue gas turnover passage in said second atomizing spray layer and slurries pond.
The said first atomizing spray layer, the second atomizing spray layer are connected with slurry spraying system.
Said slurries pond is provided with slurry mixer.
Said oxidation air inlet is connected with oxidative system, and said desulfurization slurry inlet is connected with the slurries replenishment system, and oxidation product outlet is connected with oxidation product piece-rate system.
The beneficial effect of the utility model is:
1, through the first atomizing absorption chamber, the second atomizing absorption chamber and flue gas turnover passage, can realize the desulfurization absorption reaction three times;
2, owing to the existence of the first atomizing absorption chamber, increased the contact gear ratio surface area of absorbent and flue gas, improved chemical reaction velocity, flue gas can be reduced at tower internal reaction required time, thereby the absorption tower height can be reduced;
3, the particle diameter after flue gas and the atomizing is that the mixed airflow that forms of the particulate below the 300 μ m is when the turnover exhaust gases passes; Strengthened turbulence; Increased on the one hand liquid gas time of contact; Increased the sedimentation of product on the other hand, also increased the absorption reaction area with the stock tank liquid level newly, and then improved desulfuration efficiency;
4, in the second atomizing absorption chamber bottom adjustable deflector is set, can makes smoke distribution even, improve and flow and the reaction power field, reduce atomizing absorption chamber dead angle, increase absorption chamber and effectively utilize the space;
5, the second atomizing absorption chamber has both having spraying to absorb, catch ultra-fine grain, fall the multi-functional of mist;
6, this patent is simple in structure, and highly low, nozzle quantity is few, and the low and slurries cycle-index of slurry circulating pump power requirement significantly reduces, and has reduced investment, high, the characteristic of low energy consumption of desulfuration efficiency.It is thus clear that the patent art means are simple and easy to do, has positive technique effect.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
Do further detailed explanation in the face of the specific embodiment of the utility model down, but the embodiment of the utility model is not limited thereto.
As shown in Figure 1; The multiple absorption wet flue gas desulfurizer in the two chambers of the utility model; The atomizing absorption chamber that comprises slurries pond 8 and be arranged on 8 tops, slurries pond, said slurries pond 8, atomizing absorption chamber are interconnected, and said atomizing absorption chamber comprises the first atomizing absorption chamber 4, the second atomizing absorption chamber 14; The internal cavity of the said first atomizing absorption chamber 4 is less than the internal cavity of the second atomizing absorption chamber 14; The upper space in said slurries pond 8 constitutes the flue gas turnover passage 3 of the first atomizing absorption chamber 4 and the second atomizing absorption chamber 14, and the top of the said first atomizing absorption chamber 4 is provided with smoke inlet 1, and the top of the said second atomizing absorption chamber 14 is provided with exhanst gas outlet 13.Said slurries pond 8 is provided with slurry mixer 10.The said first atomizing spray layer 2, the second atomizing spray layer 11 are connected with slurry spraying system.Said spray system is communicated with slurries pond 8, in the slurries pond 8 desulfurizing agent is housed.
Said slurries pond 8 also includes oxidation air inlet 5, desulfurization slurry inlet 6, oxidation product outlet 7; Said oxidation air inlet 5, desulfurization slurry inlet 6 are opened on the sidewall in slurries pond 8 of the first atomizing absorption chamber, 4 lower ends; Said oxidation product outlet 7 is opened on the sidewall in slurries pond 8 of second atomizing absorption chamber 14 lower ends.Said oxidation air inlet 5 is connected with oxidative system, and said desulfurization slurry enters the mouth and 6 is connected with the slurries replenishment system, and oxidation product outlet 7 is connected with oxidation product piece-rate system.
Be provided with the first atomizing spray layer 2 in the said first atomizing absorption chamber 4, the injection direction of the said first atomizing spray layer 2 is for upwards perhaps downwards; The said first atomizing spray layer 2 adopts ultrasonic wave atomizing nozzle, and the particle diameter of its spray spraying microparticles is below the 300 μ m.
Be provided with the second atomizing spray layer 11 in the said second atomizing absorption chamber 14, the said second atomizing spray layer 11 is provided with demister 12 with exhanst gas outlet 13.Be provided with deflector 9 between the flue gas turnover passage 3 in said second atomizing spray layer 11 and slurries pond 8.
The utility model course of work is following: flue gas gets into the first atomizing absorption chamber 4 through smoke inlet 1, in the first atomizing absorption chamber 4, the first atomizing spray layer 2 is housed, and it is furnished with upwards the ultrasonic wave atomizing nozzle (injection desulfurization agent) of (also can downwards) injection.Flue gas carries out desulfurization first at this and absorbs at the reactive desulfurizing agent of the first atomizing absorption chamber 4 with upstream atomizing.
Flue gas atomizes absorption chamber 4 for the first time after removing sulphur first; Through the flue gas turnover passage 3 between two Room on top, slurries ponds (liquid levels of slurries) (first atomizing absorption chamber 4, the second atomizing absorption chamber 14); Strengthened disturbance; Increased on the one hand liquid gas time of contact, increased the sedimentation of product on the other hand, also increased newly with the slurries pond in the absorption reaction area of slurries liquid level.Flue gas is accomplished the secondary desulfurization in flue gas turnover passage 3 after, arrive the bottom of the second atomizing absorption chamber 14.
Behind the deflector 9 of flue gas through the angle transferred of the bottom of the second atomizing absorption chamber 14; Evenly upwards flow; Fully contact with the desulfurizing agent of the second atomizing spray layer, 11 ejection, the second atomizing absorption chamber 14 is furnished with the conventional mechanical formula atomizer of two-way (up or down) spray up and down.Flue gas on the one hand carries out desulfurization once more to flue gas under the cleaning function of the second atomizing absorption chamber 14, be that ultra-fine droplet below the 300 μ m carries out part and catches to the particle diameter that carries because of first atomizing in the flue gas on the other hand.
The fog-zone is removed at the top that arrives the second atomizing absorption chamber 14 through the flue gas after triple desulfurization, removes the fog-zone and is furnished with demister 12.Last clean flue gas is left desulfurizing tower (i.e. the second atomizing absorption chamber 14) from exhanst gas outlet 13.In order to prevent that demister 12 from stopping up, be provided with high-pressure washing water respectively down above that, this high-pressure washing water is supplied with through high-pressure hydraulic pump.
Slurry mixer 10 plays the stirring oxidation.Slurries are constantly mended by desulfurizing agent inlet 6 in the slurries pond 8, and the air reaction that its desulfurization resultant and oxidation air inlet 5 get into generates the desulfurization resultant oxide, are discharged by the oxidation product outlet 7 in slurries pond 8 at last, accomplish whole sweetening process.
Just can realize the utility model preferably as stated.
The foregoing description is the utility model preferred implementation; But the embodiment of the utility model is not limited by the examples; Other any do not deviate from change, the modification done under spirit and the principle of the utility model, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within the protection domain of the utility model.
Claims (8)
1. multiple absorption wet flue gas desulfurizer in two chambers; The atomizing absorption chamber that comprises the slurries pond and be arranged on top, slurries pond; Said slurries pond, atomizing absorption chamber are interconnected; It is characterized in that: said atomizing absorption chamber comprises the first atomizing absorption chamber, the second atomizing absorption chamber, and the internal cavity of the said first atomizing absorption chamber is less than the internal cavity of the second atomizing absorption chamber, and the upper space in said slurries pond constitutes the flue gas turnover passage of the first atomizing absorption chamber and the second atomizing absorption chamber; The top of the said first atomizing absorption chamber is provided with smoke inlet, and the top of the said second atomizing absorption chamber is provided with exhanst gas outlet.
2. according to the multiple absorption wet flue gas desulfurizer in 1 described pair of chamber of right, it is characterized in that: said slurries pond also includes oxidation air inlet, desulfurization slurry inlet, oxidation product outlet; On the sidewall in the slurries pond that said oxidation air enters the mouth, the desulfurization slurry inlet is opened in the first atomizing absorption chamber lower end; Said oxidation product outlet is opened on the sidewall in slurries pond of the second atomizing absorption chamber lower end.
3. according to the multiple absorption wet flue gas desulfurizer in 1 described pair of chamber of right, it is characterized in that: be provided with the first atomizing spray layer in the said first atomizing absorption chamber, the injection direction of the said first atomizing spray layer is for upwards perhaps downwards; The particle diameter of the spraying microparticles of the said first atomizing spray layer is below the 300 μ m.
4. according to the multiple absorption wet flue gas desulfurizer in 1 described pair of chamber of right, it is characterized in that: be provided with the second atomizing spray layer in the said second atomizing absorption chamber, said second atomizing spray layer and exhanst gas outlet are provided with demister.
5. according to the multiple absorption wet flue gas desulfurizer in 1 described pair of chamber of right, it is characterized in that: be provided with deflector between the flue gas turnover passage in said second atomizing spray layer and slurries pond.
6. according to the multiple absorption wet flue gas desulfurizer in 1 described pair of chamber of right, it is characterized in that: the said first atomizing spray layer, the second atomizing spray layer are connected with slurry spraying system.
7. according to the multiple absorption wet flue gas desulfurizer in 1 described pair of chamber of right, it is characterized in that: said slurries pond is provided with slurry mixer.
8. according to the multiple absorption wet flue gas desulfurizer in 7 described pairs of chambers of right; It is characterized in that: said oxidation air inlet is connected with oxidative system; Said desulfurization slurry inlet is connected with the slurries replenishment system, and oxidation product outlet is connected with oxidation product piece-rate system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203747920U CN202237782U (en) | 2011-09-28 | 2011-09-28 | Dual-cavity smoke desulfurization device using multi-absorption wet method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203747920U CN202237782U (en) | 2011-09-28 | 2011-09-28 | Dual-cavity smoke desulfurization device using multi-absorption wet method |
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| Publication Number | Publication Date |
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| CN202237782U true CN202237782U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203747920U Expired - Fee Related CN202237782U (en) | 2011-09-28 | 2011-09-28 | Dual-cavity smoke desulfurization device using multi-absorption wet method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343215A (en) * | 2011-09-28 | 2012-02-08 | 华南理工大学 | Dual-chamber multi-absorption wet flue gas desulfurizing device |
-
2011
- 2011-09-28 CN CN2011203747920U patent/CN202237782U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343215A (en) * | 2011-09-28 | 2012-02-08 | 华南理工大学 | Dual-chamber multi-absorption wet flue gas desulfurizing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20140928 |
|
| EXPY | Termination of patent right or utility model |