CN203425710U - Deep flue gas desulfurization equipment employing wet process - Google Patents
Deep flue gas desulfurization equipment employing wet process Download PDFInfo
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- CN203425710U CN203425710U CN201320343550.4U CN201320343550U CN203425710U CN 203425710 U CN203425710 U CN 203425710U CN 201320343550 U CN201320343550 U CN 201320343550U CN 203425710 U CN203425710 U CN 203425710U
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- flue gas
- desulfurization
- desulfurizing tower
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Abstract
The utility model discloses deep flue gas desulfurization equipment employing a wet process. The deep flue gas desulfurization equipment comprises a desulfurization tower, a flue gas pipeline and a flue gas outlet pipeline, wherein the flue gas pipeline is arranged at the lateral wall of the desulfurization tower; the flue gas outlet pipeline is arranged at the top of the desulfurization tower; a plurality of spraying layers for atomizing limestone slurry are placed inside the desulfurization tower; a plurality of groups of desulfurization additive atomizing nozzles are distributed inside the flue gas pipeline; a desulfurization additive and the flue gas are evenly mixed before the flue gas enters the desulfurization tower to contact the limestone slurry atomized by the spraying layers; the desulfurization additive generates H<+> to carry out an initial reaction when being dissolved into water by combining with SO2, and then enters the desulfurization tower to finish an absorption reaction together with the atomized limestone slurry. Thus, deep flue gas desulfurization employing the wet process is achieved. By adopting the deep flue gas desulfurization equipment and method employing the wet process, not only is the utilization rate of the desulfurization additive increased, but also the effective utilization rate of the slurry is greatly increased; the power of a slurry circulating pump can be reduced; the station service power consumption rate is reduced; the cost is saved; economic operation is achieved.
Description
Technical field
The utility model relates to gas cleaning process field, relates in particular to a kind of degree of depth wet flue gas desulfurizer.
Background technology
Power plant, owing to using the coal that sulfur content is high, causes amount of sulfur contenting in smoke off-design amplitude larger, though adopt the combustion system mix coal blending, but still more difficult control coal-burning boiler moves under design sulphur content, causes desulfurizing tower entrance SO
2content surpasses desulphurization system design load and outlet SO
2concentration over-standard.For meeting the environmental requirement of increasingly stringent, most of power plant adopts the number of plies that increases desulfurizing tower spraying layer to improve desulfurizing tower liquid-gas ratio, thereby improves desulfuration efficiency.But in the situation that desulfurizing tower height is limited, when the spraying layer of increase can not meet required liquid-gas ratio, need to set up new desulfurizing tower, this will increase the investment of power plant.Meanwhile, improve the liquid-gas ratio of desulphurization system, make system operation energy consumption become large, station service power consumption rate uprises, and the economy of power plant's operation declines.Therefore for solving the problem of the economy of the power plant that burning high sulfur coal causes, research shows to add a certain amount of sulfur-removing additives in lime stone slurry, can improve desulfuration efficiency, reduce the liquid-gas ratio in desulfurization operation, with the object that reaches energy-conservation, reduces operating cost.
At present, sulfur-removing additives mainly divides inorganic additive and the large class of organic additive two.But overall service condition is that organic additive is better than inorganic additive.After adding organic additive, the effect ion being dissolved in slurries passes through neutralization of acid with base, promotes SO in desulfurizing tower
2absorption reaction and CaCO
3solubilizing reaction, thereby improved the utilization rate of desulfuration efficiency and lime stone.
But the desulphurization system of existing use sulfur-removing additives, generally directly joins sulfur-removing additives in recycle slurry liquid pool, after stirring, by slurry circulating pump, squeezes into desulfurizing tower.So just caused sulfur-removing additives consumption large, concentration is little, and action intensity is with weakening running time, thereby causes the problems such as desulfuration efficiency is unstable.
Summary of the invention
The purpose of this utility model is to solve existing desulphurization system when using sulfur-removing additives, and concentration large due to consumption, in slurries is low, and can not keep the technical problem of constant desulfuration efficiency, and a kind of degree of depth wet flue gas desulfurizer is provided.
The utility model is achieved through the following technical solutions:
A wet flue gas desulfurizer, comprises desulfurizing tower, is located at the flue of desulfurizing tower sidewall and the exhanst gas outlet pipeline at desulfurizing tower top, is distributed with many group sulfur-removing additives atomizers in desulfurizing tower flue.
Two every group, described sulfur-removing additives atomizer is symmetrically distributed in flue.
The distributing position of described sulfur-removing additives atomizer, apart from desulfurizing tower tower body 2000mm～3000mm place.
A wet flue gas desulfurization method, its process is: many group sulfur-removing additives atomizers that distribute in flue, when flue gas is entering before desulfurizing tower touches the lime stone slurry after spraying layer atomization, the SO in sulfur-removing additives and flue gas
2effect, in conjunction with SO
2the H producing when water-soluble
+initial action occurs, and the lime stone slurry entering again after desulfurizing tower and atomization immediately completes absorption reaction, realizes degree of depth wet process of FGD.
The utility model compared with prior art under, at least tool has the following advantages and effect:
Put it briefly, in flue, be distributed with many group sulfur-removing additives atomizers, make before flue gas do not enter desulfurizing tower, the sulfur-removing additives of first processing with atomization in flue mixes, therefore, a small amount of sulfur-removing additives is evenly distributed in a large amount of flue gases, adopts said structure pretreated fumes, increased SO in flue gas
2with the contact area of lime stone slurry and additive, not only guaranteed that sulfur-removing additives is able to utilize fully efficiently, and further improved the effect of flue gas desulfurization.
Specifically, at flue gas, enter before desulfurizing tower touches the lime stone slurry after spraying layer atomization the SO in sulfur-removing additives and flue gas
2effect, in conjunction with SO
2when water-soluble, produce H
+there is initial action, enter immediately desulfurizing tower and complete final reacting with the lime stone slurry after atomization, accelerated reaction rate, improved desulfuration efficiency, realized the deep desulfuration of wet flue gas.
This degree of depth wet flue gas desulfurizer, adopt simple and easy to do technological means, realized the stable of all even content that in flue gas, sulfur-removing additives distributes, for the desulfurization of desulfurizing tower stability and high efficiency provides necessary condition.
Adopt this degree of depth wet flue gas desulfurizer, because greatly having improved the effective rate of utilization of slurries, can greatly reduce slurry circulating pump power, reduce station service power consumption rate, cost-saving, economical operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model degree of depth wet flue gas desulfurizer.
Fig. 2 is the distribution schematic diagram of Fig. 1 sulfur-removing additives atomizer in flue.
The specific embodiment
Below in conjunction with specific embodiment, the utility model is more specifically described in detail.
Embodiment
As shown in Figure 1, 2.The disclosed degree of depth wet flue gas desulfurizer of the utility model, comprises the exhanst gas outlet pipeline 1 at desulfurizing tower 2, spraying layer 3, demister (not shown), the flue 5 that is located at desulfurizing tower 2 sidewalls and desulfurizing tower 2 tops; In flue 5, be distributed with many group sulfur-removing additives atomizers 4, every group two (quantity is not limit in actual applications) is symmetrically distributed in flue 5, and its distributing position is apart from desulfurizing tower 2 tower body 2000mm～3000mm places.
Demister is arranged on desulfurizing tower 2 smoke outlets, and its progression can adopt secondary, three grades, level Four etc.The progression of demister is how many, by those skilled in the art, according to actual conditions, is determined.
The atomizing particle size of sulfur-removing additives atomizer 4 is in 50um～300um left and right.
Known according to the diffusivity difference of material different conditions, the diffusion velocity of gas is maximum, and liquid takes second place, and solid is minimum.
Known in the diffusivity difference of different conditions according to material, the diffusion velocity of gas is maximum, and liquid takes second place, and solid is minimum.According to above-mentioned principle, adopt sulfur-removing additives atomizer 4, sulfur-removing additives is atomized into mist, the sulfur-removing additives irregular movement of mist, diffusion, is diffused in flue gas, at short notice uniformly for degree of depth high-efficiency desulfurization creates conditions strongly.Therefore, flue gas is before entering desulfurizing tower, and the sulfur-removing additives after atomization is uniformly distributed therein, thereby before touching the slurries of spraying layer ejection, the SO in sulfur-removing additives and flue gas
2, there is initial action in effect, enters immediately tower body space and contact generation end reaction with slurries.It is more even that the atomization of sulfur-removing additives distributes it in reactant, increased SO in sulfur-removing additives and flue gas
2with the contact area of slurries, accelerated absorption reaction speed, improve desulfuration efficiency, reach and use few sulfur-removing additives to measure the desulfurized effect that large use amount just can reach in the past, realize the deep desulfuration of wet flue gas.
According to above-mentioned principle, put it briefly, this patent is distributed with many group sulfur-removing additives atomizers 4 in flue 5, make before flue gas do not enter desulfurizing tower 2, first mix with the sulfur-removing additives in flue 5, atomization is processed, and therefore, a small amount of sulfur-removing additives is evenly distributed in a large amount of flue gases.Adopt the flue gas after said structure is processed atomization to enter after desulfurizing tower 2, not only increased SO in flue gas
2with the contact area of lime stone slurry, also guaranteed that sulfur-removing additives is able to utilize fully efficiently, and further improved the effect of flue gas desulfurization.
As can be seen here, at flue gas, enter before desulfurizing tower 2 touches the lime stone slurry after spraying layer 3 atomizations the SO in sulfur-removing additives and flue gas
2effect, in conjunction with SO
2dissolve and produce H+ generation initial action, enter immediately desulfurizing tower 2 and complete final reacting with the lime stone slurry after atomization, accelerated reaction rate, improved desulfuration efficiency, realized the deep desulfuration of wet flue gas.
As mentioned above, just can realize preferably the utility model.
Embodiment of the present utility model is not restricted to the described embodiments; other are any does not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitute, combination, simplify; all should be equivalent substitute mode, within being included in protection domain of the present utility model.
Claims (4)
1. a degree of depth wet flue gas desulfurizer, comprises desulfurizing tower, is located at the flue of desulfurizing tower sidewall and the exhanst gas outlet pipeline at desulfurizing tower top, and its feature is being: in desulfurizing tower flue, be distributed with many group sulfur-removing additives atomizers.
2. degree of depth wet flue gas desulfurizer according to claim 1, is characterized in that: two every group, described sulfur-removing additives atomizer is symmetrically distributed in flue.
3. degree of depth wet flue gas desulfurizer according to claim 2, is characterized in that: the distributing position of described sulfur-removing additives atomizer, and apart from desulfurizing tower tower body 2000mm～3000mm place.
4. degree of depth wet flue gas desulfurizer according to claim 1, is characterized in that: desulfurizing tower smoke outlet is provided with secondary demister.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320343550.4U CN203425710U (en) | 2013-06-14 | 2013-06-14 | Deep flue gas desulfurization equipment employing wet process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320343550.4U CN203425710U (en) | 2013-06-14 | 2013-06-14 | Deep flue gas desulfurization equipment employing wet process |
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|---|---|
| CN203425710U true CN203425710U (en) | 2014-02-12 |
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|---|---|---|---|
| CN201320343550.4U Expired - Fee Related CN203425710U (en) | 2013-06-14 | 2013-06-14 | Deep flue gas desulfurization equipment employing wet process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104208997A (en) * | 2014-08-01 | 2014-12-17 | 河北省电力勘测设计研究院 | Circulating water and flue gas combined treatment system in thermal power station |
-
2013
- 2013-06-14 CN CN201320343550.4U patent/CN203425710U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104208997A (en) * | 2014-08-01 | 2014-12-17 | 河北省电力勘测设计研究院 | Circulating water and flue gas combined treatment system in thermal power station |
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| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20160614 |