CN215311379U

CN215311379U - Desulfurization and denitrification automatic dosing control system

Info

Publication number: CN215311379U
Application number: CN202121747514.5U
Authority: CN
Inventors: 施惠东; 徐凯鹏
Original assignee: Wuhan Chenxin Fluid Control Environmental Protection Equipment Co ltd
Current assignee: Wuhan Chenxin Fluid Control Environmental Protection Equipment Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2021-12-28
Anticipated expiration: 2031-07-29

Abstract

The utility model provides a desulfurization and denitrification automatic dosing control system, which comprises a desulfurization tower and a denitrification tower, wherein the desulfurization tower and the denitrification tower adopt the following structures: the bottom of desulfurizing tower and denitration tower is provided with circulation tank, and circulation tank passes through communicating pipe and the bottom intercommunication of tower body, and circulation tank's top is provided with the dosing tank, is provided with the impeller in communicating pipe, is provided with the second gear in the dosing tank, and the bottom surface rotary seal cooperation of second gear and dosing tank, impeller are used for driving the second gear and rotate, and dosing hole and recess have been seted up to the bottom of dosing tank, are equipped with the dosing groove on the second gear. According to the utility model, the absorption liquid entering the circulating water tank can be automatically added with chemicals, so that the medicine content in the absorption liquid pumped to the spray header is always maintained at a relative height, the rotating speed of the impeller can be changed along with the change of the flow velocity of the absorption liquid entering the circulating water tank, and the accuracy of adding the chemicals is ensured.

Description

Desulfurization and denitrification automatic dosing control system

Technical Field

The utility model relates to the technical field of desulfurization and denitrification, in particular to an automatic dosing control system for desulfurization and denitrification.

Background

At present, along with more and more attach importance to the environment, also there is strict standard to the content of the sulphide in the gas of discharging into the atmosphere and nitrogen oxide, people adopt desulfurizing tower and denitration tower to reduce desulfurization and denitration the sulphide and the nitrogen oxide in the gas usually at present, introduce the desulfurizing tower with waste gas earlier, through set up the shower nozzle in the desulfurizing tower, and spray the absorption liquid in to the desulfurizing tower, carry out the desulfurization to waste gas, then in introducing the denitration tower, through set up the shower nozzle in the denitration tower, and spray the absorption liquid in to the denitration tower, carry out the denitration to waste gas, at last discharge into the atmosphere.

However, the above technical means have the problems that the absorbent solution needs to have a drug content with sufficient concentration to effectively desulfurize and denitrate the exhaust gas, the absorbent solution and the exhaust gas are fully mixed to generate a reduction reaction, the drug content in the absorbent solution can be reduced to require the supplement of the drug content for the absorbent solution, the drug adding is usually carried out by manual unification, and in order to improve the efficiency, people usually add the drug to the absorbent solution in a fixed time and fixed quantity manner, the drug adding manner is time-consuming and labor-consuming, and causes that the drug content in some absorbent solutions which do not need to be added or only need to be added a little is too much, the drug content in other absorbent solutions which need to be added a little is insufficient, and the drug added to the absorbent solution cannot be fully mixed with the absorbent solution in the tower at the same time, so that the drug content of part of the absorbent solution is still insufficient, which causes insufficient waste gas treatment, and the environment is polluted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a desulfurization and denitrification automatic dosing control system capable of automatically adding liquid medicine into absorption liquid.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows: the utility model provides a SOx/NOx control automatic reagent feeding control system, includes desulfurizing tower and denitration tower, the desulfurizing tower with the structure of denitration tower is the same, the desulfurizing tower with the denitration tower adopts following structure:

the device comprises a tower body, an air inlet arranged on the tower body, an air outlet arranged on the tower body, a spray header arranged in the tower body, absorption liquid positioned at the bottom of the tower body, a water pump arranged on the outer side of the tower body and a spray pipe connected with the spray header and the water pump, wherein the air outlet on the desulfurization tower is communicated with the air inlet of the denitrification tower;

a circulating water tank is arranged at the bottom of the tower body, a water inlet of the water pump is communicated with the circulating water tank, a sealing plate is arranged on the circulating water tank, a communicating pipe is arranged on the sealing plate and is used for communicating the circulating water tank with the bottom of the tower body, a dosing tank is arranged at the top of the circulating water tank, an impeller is rotationally arranged in the communicating pipe, one end of the impeller penetrates into the dosing tank and is connected with a first gear, a second gear is further arranged in the dosing tank, the second gear is in sealing fit with the bottom surface of the dosing tank and rotates relative to the bottom surface of the dosing tank, and the first gear is meshed with the second gear and drives the second gear to rotate;

the bottom of the dosing box is provided with dosing holes which penetrate through the dosing box and the circulating water tank at positions corresponding to the second gear, one surface of the second gear corresponding to the dosing holes is provided with at least one dosing groove, the bottom of the dosing box is further provided with a groove, one part of the groove is positioned below the second gear, and the other part of the groove exceeds the second gear and is communicated with the dosing box.

Further, the medicine adding hole is formed in one side, close to the tower body, of the communicating pipe, and the medicine adding hole is located in the impeller.

Further, a gap is formed between the sealing plate and the tower body, the communicating pipe is arranged at the top of the sealing plate, a through hole is formed in the tower body, and the height of the through hole is lower than that of the communicating pipe, wherein the height of the through hole is located on one side of the tower body.

Further, be provided with interior barrel in the tower body, the top of interior barrel with the inside seal of tower body sets up, the bottom of interior barrel be uncovered form with the inside intercommunication of tower body, the liquid level of absorption liquid is not less than the uncovered of the bottom of interior barrel, the shower head is located in the inner tube is internal, the air inlet with interior barrel intercommunication is located the top of shower head, the gas outlet with the tower body with space intercommunication between the interior barrel.

Further, the uncovered department of the bottom of interior barrel installs first filter screen, be provided with a plurality of first meshes on the first filter screen.

Further, the bottom of interior barrel still is equipped with the second filter screen, the second filter screen encloses to be established the bottom of interior barrel, the equipartition all around of second filter screen has a plurality of second meshes, being close to of second filter screen one side of through-hole is provided with the baffle, highly surpassing of baffle the top of through-hole.

Further, interior barrel with be provided with at least one third filter screen between the tower body, the third filter screen is located the top of second filter screen and be located the liquid level below of absorption liquid, a plurality of third meshes have been seted up on the third filter screen.

Further, the spray header is provided with at least one, and the end of the spray header is spherical.

Further, still be provided with the conical plate in the tower body, the conical plate is located interior barrel with between the tower body, and with the inner wall connection of tower body, the conical plate is the hollow toper that the big top diameter of bottom diameter is little, and is conical the bottom of conical plate is opened, and open at the top has the through hole, the conical plate passes through the through hole cover is established outside the inner tube, the internal diameter of through hole is greater than the diameter of interior barrel, the waste gas of conical plate below passes through the through hole, later passes through the gas outlet discharge tower body, the bottom of conical plate is provided with the outlet.

Furthermore, a demister is arranged in the tower body at a position corresponding to the air outlet.

The utility model has the beneficial effects that:

the utility model can automatically add medicine into the absorption liquid entering the circulating water tank, so that the medicine content in the absorption liquid pumped to the spray header by the water pump is always maintained at a relative height, and the rotation speed of the impeller can be changed along with the change of the flow speed of the absorption liquid entering the circulating water tank because the rotation of the impeller is driven by the flow of the absorption liquid in the communicating pipe, thereby ensuring that each medicine liquid can correspond to the quantitative absorption liquid entering the circulating water tank and ensuring the accuracy of medicine addition.

Drawings

In the drawings:

FIG. 1 is a schematic structural diagram of an automatic dosing control system for desulfurization and denitrification according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a desulfurization tower and a denitrification tower in the desulfurization and denitrification automatic dosing control system according to an embodiment of the utility model;

fig. 3 is an enlarged view at a in fig. 2.

Description of reference numerals:

1-a desulfurizing tower, 2-a denitrifying tower, 3-a tower body, 31-an air inlet, 32-an air outlet, 321-a demister, 33-a through hole, 34-an inner cylinder body, 35-a first filter screen, 351-a first mesh, 36-a second filter screen, 361-a second mesh, 37-a baffle, 38-a third filter screen, 381-a third mesh, 39-a conical plate, 391-a through hole, 392-a drainage hole, 4-a spray head, 5-a water pump, 6-a spray pipe, 7-a connecting pipe, 8-a circulating water tank, 81-a sealing plate, 82-a communicating pipe, 83-an impeller, 84-a first gear, 85-a gap, 9-a dosing tank, 91-a second gear, 911-a dosing tank and 93-a dosing hole, 94-groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples, and it is to be understood that the described examples are only a part of the examples of the present invention, and not all of them. The embodiments and features of the embodiments in the present application may be combined with each other without conflict. Based on the embodiments in the utility model, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the utility model.

It should be noted that if directional indications (such as upper, lower, left, right, front and rear … …) 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 meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, "a plurality" means two or more. 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 utility model.

See fig. 1-3.

The utility model discloses a desulfurization and denitrification automatic dosing control system, which comprises a desulfurization tower 1 and a denitrification tower 2, wherein the desulfurization tower 1 and the denitrification tower 2 have the same structure, and the desulfurization tower 1 and the denitrification tower 2 adopt the following structures:

the device comprises a tower body 3, an air inlet 31 arranged on the tower body 3, an air outlet 32 arranged on the tower body 3, a spray header 4 arranged in the tower body 3, absorption liquid positioned at the bottom of the tower body 3, a water pump 5 arranged on the outer side of the tower body 3 and a spray pipe 6 used for connecting the spray header 4 and the water pump 5, wherein the air outlet 32 on the desulfurization tower 1 is communicated with the air inlet 31 of the denitrification tower 2 through a connecting pipe 7;

a circulating water tank 8 is further arranged at the bottom of the tower body 3, a water inlet of the water pump 5 is communicated with the circulating water tank 8, a sealing plate 81 is arranged at a position, close to the tower body 3, of the circulating water tank 8, the periphery of the sealing plate 81 is hermetically connected with the circulating water tank 8, a communicating pipe 82 is arranged on the sealing plate 81, one end of the communicating pipe 82 is communicated with the bottom of the tower body 3, the other end of the communicating pipe 82 is communicated with the circulating water tank 8, a dosing box 9 is arranged at the top of the circulating water tank 8, an impeller 83 is arranged in the communicating pipe 82, the impeller 83 rotates along with the flow of absorption liquid in the communicating pipe 82, one end of the impeller 83 penetrates through the top of the circulating water tank 8 and penetrates into the dosing box 9, a first gear 84 is connected in the dosing box 9, and a second gear 91 is further arranged in the dosing box 9, the second gear 91 is in sealing fit with the bottom surface of the dosing box 9 and can rotate relative to the bottom surface of the dosing box 9, and the first gear 84 is meshed with the second gear 91 and drives the second gear 91 to rotate;

a dosing hole 92 penetrating through the dosing box 9 and the circulating water tank 8 is formed in the position, corresponding to the second gear 91, of the bottom of the dosing box 9, at least one dosing groove 911 is formed in one surface, corresponding to the dosing hole 92, of the second gear 91, a groove 93 is further formed in the position, corresponding to the second gear 91, of the bottom of the dosing box 9, a part of the groove 93 is located below the second gear 91, and the other part of the groove 93 exceeds the second gear 91 and is communicated with the dosing box 9, and when the second gear 91 rotates, the dosing groove 911 can be periodically communicated with the dosing hole 92 and the groove 93 along with the rotation of the second gear 91.

In the specific implementation, firstly adding prepared liquid medicine with a certain concentration into the medicine adding box 9, when the equipment starts to work, starting the water pump 5, pumping absorption liquid in the circulating water tank 8 to the spray header 4 through the spray pipe 6, spraying the absorption liquid by the spray header 4 to fully contact with waste gas to carry out reduction reaction, then enabling the absorption liquid to fall back to the bottom of the tower body 3 under the action of gravity, wherein the pressure in the circulating water tank 8 is lower than that at the bottom of the tower body 3 due to the reduction of the absorption liquid in the circulating water tank 8, the absorption liquid at the bottom of the tower body 3 flows into the circulating water tank 8 through the communicating pipe 82, in the process, the absorption liquid flowing in the communicating pipe 82 drives the impeller 83 to rotate so as to drive the first gear 84 and the second gear 91 to rotate, when the second gear 91 rotates, the medicine adding tank 911 is firstly communicated with the groove 93, the liquid medicine in the medicine adding box 9 enters the medicine adding tank 911 through the groove 93, along with the rotation of the second gear 91, the medicine feeding groove 911 is disconnected from the groove 93 and is not communicated, the medicine feeding groove 911 is fully loaded with medicine liquid and is communicated with the medicine feeding hole 92 along with the rotation of the second gear 91, the medicine liquid in the medicine feeding groove 911 enters the circulating water tank 8 through the medicine feeding hole 92 and is mixed with the absorption liquid flowing into the circulating water tank 8, and the mixed absorption liquid is sprayed out of the spray head 4 by the water suction pump 5 again after waiting for repeating.

In an embodiment, the dosing hole 92 is formed on a side of the communicating pipe 82, which is close to the tower body 3, of the impeller 83. By the design, the liquid medicine is mixed with the absorption liquid before flowing through the impeller, and the mixed absorption liquid is stirred by the impeller to be more uniformly mixed with the medicament when passing through the impeller.

In an embodiment, a gap 85 is formed between the sealing plate 81 and the tower body 3, the communication pipe 82 is disposed at the top of the sealing plate 81, a through hole 33 communicating with the gap 85 is formed at a position of the tower body 3 corresponding to the sealing plate 81, and a height of the through hole 33 is lower than a height of the communication pipe 82 at one side of the tower body 3. By the design, sediment at the bottom of the tower body and floating objects at the top of the liquid level of the absorption liquid in the tower body can be prevented from entering the circulating water tank, and the absorption liquid entering the circulating water tank is relatively clean.

In an embodiment, an inner cylinder 34 is fixed in the tower body 3, the top of the inner cylinder 34 is hermetically arranged with the inside of the tower body 3, the bottom of the inner cylinder 34 is open and is communicated with the inside of the tower body 3, the liquid level of the absorption liquid is not lower than the opening of the bottom of the inner cylinder 34, the spray header 4 is located in the inner cylinder 34, the air inlet 31 is communicated with the inner cylinder 34 and is located above the spray header 4, and the air outlet 32 is communicated with the tower body 3 and the space between the inner cylinders 34. Design like this, it is internal that waste gas gets into the inner tube from the air inlet, later, the shower head sprays the absorption liquid in the inside barrel, absorption liquid and waste gas collide each other and mix then together fall down, in-process once more, the time of absorption liquid and waste gas contact is longer relatively, can make absorption liquid and waste gas produce the reaction better, afterwards, in the absorption liquid of barrel bottom in the waste gas gets into, react with the absorption liquid once more, then the absorption liquid of floating tower body bottom under the buoyancy of gas self, discharge from the gas outlet, this kind of mode is long with the time of absorption liquid contact not only, the harmful mass energy in the waste gas is better is got rid of, and the water content of the waste gas that can also greatly reduced get into the gas outlet, the design is comparatively ingenious.

In an embodiment, a first screen 35 is installed at an opening of the bottom of the inner cylinder 34, and a plurality of first mesh holes 351 are formed on the first screen 35. By the design, when the waste gas in the inner cylinder body passes through the first filter screen, the waste gas can be divided into small bubble shapes to enter the absorption liquid at the bottom of the tower body, so that the contact area of the waste gas and the absorption liquid is increased, and the purification rate of the waste gas is improved.

In an embodiment, the bottom of interior barrel 34 still is equipped with second filter screen 36, second filter screen 36 encloses and establishes the bottom of interior barrel 34, second filter screen 36's equipartition all around has a plurality of second mesh 361, second filter screen 36 be close to one side of through-hole 33 is provided with baffle 37, baffle 37 highly surpasss the top of through-hole 33, baffle 37 can not influence the absorption liquid and normally flow through-hole 33. Design like this, because of the gas through first filter screen is too much, the bubble of being separated by first filter screen gathers together again easily and constitutes a big bubble of one, through setting up the second filter screen, these big bubbles can join in marriage once more when passing through the second filter screen and cut apart into numerous small bubbles, further increased the area of contact of waste gas with the absorption liquid, the improvement is to the purification rate of waste gas, through setting up the baffle, can block in the small bubble gets into circulation tank through the through-hole, avoid getting into the volume reduction of the absorption liquid in the circulation tank.

In an embodiment, at least one third filter screen 38 is disposed between the inner cylinder 34 and the inner wall of the tower body 3, the third filter screen 38 is located above the second filter screen 36 and below the liquid level of the absorption liquid, and a plurality of third mesh holes 381 are opened on the third filter screen 38. By the design, after the small bubbles divided by the second filter screen pass through the third filter screen, the small bubbles can be converged below the third filter screen again to form one large bubble, and then the large bubbles are divided into a plurality of small bubbles after passing through the third mesh, so that the purification rate of waste gas is further improved.

In one embodiment, at least one of the showerheads 4 is provided, and the tips of the showerheads 4 are spherical. By the design, the absorption liquid sprayed by the spray header is in spherical contact with the waste gas, the contact area is large, and the purification rate of the waste gas is high.

In an embodiment, a tapered plate 39 is further disposed in the tower body 3, the tapered plate 39 is located between the inner cylinder 34 and the inner wall of the tower body 3 and connected to the inner wall of the tower body 3, the tapered plate 39 is a hollow cone with a large bottom diameter and a small top diameter, the bottom of the tapered plate 39 is open, a through hole 391 is formed in the top of the tapered plate, the tapered plate 39 is sleeved outside the inner cylinder 34 through the through hole 391, the inner diameter of the through hole 391 is larger than the diameter of the inner cylinder 34, the exhaust gas below the tapered plate 39 passes through the through hole 391 and then is discharged out of the tower body 3 through the air outlet 32, a drain hole 392 is disposed at the bottom of the tapered plate 39, and water droplets liquefied on the top surface of the tapered plate 39 can flow back to the bottom of the tower body 3 through the drain hole 392. The design is that because the conical plate is in a conical shape with a small upper part and a large lower part, when waste gas impacts the inner wall of the conical plate, water vapor contained in the waste gas can be polymerized into water drops to flow downwards on the inner wall of the conical plate, and simultaneously, because the diameter of the through hole is smaller than the bottom of the open conical plate, the flowing speed of the air flow at the through hole can be accelerated, the temperature can be increased according to the increase of the air pressure, the temperature can be decreased according to the decrease of the air pressure, and the temperature can be decreased according to the decrease of the air pressure, therefore, under the premise that the air flow is unchanged, the air flow pressure at the through hole in the conical plate is larger than the air flow pressure outside the through hole, the waste gas has a process that the temperature is increased and then the temperature is decreased when flowing through the through hole, in the process, the water vapor contained in the waste gas can be liquefied into water drops again and flows downwards, and the residual waste gas is discharged out of the tower body through the gas outlet, so that the content of water vapor in the waste gas is further reduced.

In an embodiment, a demister 321 is disposed in the tower body 3 at a position corresponding to the air outlet 32. Design like this, through the moisture content in the waste gas that the defroster further reduced the discharge tower body, the design is comparatively reasonable.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a SOx/NOx control automatic reagent feeding control system, includes desulfurizing tower (1) and denitration tower (2), its characterized in that: the desulfurization tower (1) and the denitration tower (2) have the same structure, and the desulfurization tower (1) and the denitration tower (2) adopt the following structures:

the denitration tower comprises a tower body (3), an air inlet (31) arranged on the tower body (3), an air outlet (32) formed in the tower body (3), a spray header (4) arranged in the tower body (3), absorption liquid positioned at the bottom of the tower body (3), a water pump (5) arranged on the outer side of the tower body (3) and a spray pipe (6) connected with the spray header (4) and the water pump (5), wherein the air outlet (32) formed in the desulfurization tower (1) is communicated with the air inlet (31) of the denitration tower (2);

the bottom of tower body (3) is provided with circulating water tank (8), the water inlet of water pump (5) with circulating water tank (8) intercommunication, be provided with closing plate (81) on circulating water tank (8), be provided with communicating pipe (82) on closing plate (81), communicating pipe (82) will circulating water tank (8) with the bottom intercommunication of tower body (3), the top of circulating water tank (8) is provided with dosing tank (9), communicating pipe (82) internal rotation is provided with impeller (83), the one end of impeller (83) penetrates in dosing tank (9) and is connected with first gear (84), still be provided with second gear (91) in dosing tank (9), second gear (91) with the bottom surface of dosing tank (9) is sealed to be joined in marriage and is relative the bottom surface of dosing tank (9) rotates, first gear (84) with second gear (91) mesh and drive second gear (91) commentaries on classics of turning into Moving;

the bottom of the dosing box (9) corresponds to the position of the second gear (91) and is provided with a dosing hole (92) which runs through the dosing box (9) and the circulating water tank (8), the second gear (91) corresponds to one surface of the dosing hole (92) and is provided with at least one dosing groove (911), the bottom of the dosing box (9) is further provided with a groove (93), one part of the groove (93) is positioned below the second gear (91), and the other part of the groove exceeds the second gear (91) and is communicated with the dosing box (9).

2. The desulfurization and denitrification automatic dosing control system according to claim 1, characterized in that: the dosing hole (92) is formed in one side, close to the tower body (3), of the communicating pipe (82) and located on the impeller (83).

3. The desulfurization and denitrification automatic dosing control system according to claim 1 or 2, characterized in that: the tower is characterized in that a gap (85) is formed between the sealing plate (81) and the tower body (3), the communicating pipe (82) is arranged at the top of the sealing plate (81), a through hole (33) is formed in the tower body (3), and the height of the through hole (33) is lower than that of the communicating pipe (82) which is positioned on one side of the tower body (3).

4. The desulfurization and denitrification automatic dosing control system according to claim 3, characterized in that: be provided with interior barrel (34) in tower body (3), the top of interior barrel (34) with the inside seal of tower body (3) sets up, the bottom of interior barrel (34) be uncovered form with the inside intercommunication of tower body (3), the liquid level of absorption liquid is not less than the uncovered of the bottom of interior barrel (34), shower head (4) are located in barrel (34), air inlet (31) with interior barrel (34) intercommunication is located the top of shower head (4), gas outlet (32) with tower body (3) with space intercommunication between interior barrel (34).

5. The desulfurization and denitrification automatic dosing control system according to claim 4, characterized in that: the opening of the bottom of the inner cylinder body (34) is provided with a first filter screen (35), and the first filter screen (35) is provided with a plurality of first meshes (351).

6. The desulfurization and denitrification automatic dosing control system according to claim 5, characterized in that: the bottom of interior barrel (34) still is equipped with second filter screen (36), second filter screen (36) enclose to be established the bottom of interior barrel (34), the equipartition all around of second filter screen (36) has a plurality of second mesh (361), being close to of second filter screen (36) one side of through-hole (33) is provided with baffle (37), highly surpassing of baffle (37) the top of through-hole (33).

7. The desulfurization and denitrification automatic dosing control system according to claim 6, characterized in that: interior barrel (34) with be provided with at least one third filter screen (38) between tower body (3), third filter screen (38) are located the top of second filter screen (36) and are located the liquid level below of absorption liquid, a plurality of third mesh (381) have been seted up on third filter screen (38).

8. The desulfurization and denitrification automatic dosing control system according to claim 1 or 2, characterized in that: the spraying head (4) is provided with at least one, and the end of the spraying head (4) is spherical.

9. The desulfurization and denitrification automatic dosing control system according to claim 4, characterized in that: still be provided with conical plate (39) in tower body (3), conical plate (39) are located interior barrel (34) with between tower body (3), and with the inner wall of tower body (3) is connected, conical plate (39) are the big hollow toper that top diameter is little of bottom diameter, and the toper conical plate (39) open in the bottom, and open at the top has through hole (391), conical plate (39) pass through hole (391) cover is established outside interior barrel (34), the internal diameter of through hole (391) is greater than the diameter of interior barrel (34), waste gas of conical plate (39) below passes through hole (391), later passes through gas outlet (32) discharge tower body (3), the bottom of conical plate (39) is provided with outlet (392).

10. The desulfurization and denitrification automatic dosing control system according to claim 1 or 2, characterized in that: a demister (321) is arranged in the tower body (3) at a position corresponding to the air outlet (32).