CN201124077Y

CN201124077Y - Atomized spray head for wet desulfurization and dust elimination

Info

Publication number: CN201124077Y
Application number: CNU2007200450390U
Authority: CN
Inventors: 丁有农
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-11-04
Filing date: 2007-11-04
Publication date: 2008-10-01
Anticipated expiration: 2017-11-04

Abstract

An atomizing nozzle for wet-method desulphurization and dust removal is characterized in making use of relatively low pressure gas medium to make the desulphurization liquid obtain high-quality atomization. The nozzle comprises a nozzle body, an impact plate, a mixture and a clapboard under the condition that the pressure of the atomizing medium used is 0.1Mpa bigger than the pressure of the desulphurization liquid, wherein, the nozzle body, the mixture and the clapboard form two mixing rooms where the atomizing gas and the desulphurization liquid form a relatively high pressure gas liquid mixture which sprays out at a very high speed from the nozzle hole of the nozzle body. The impact plate is a plate type part with the function of guidance, which makes the spraying fog torch impact and atomize once again on the impact plate, and changes the spraying direction of the fog torch by the guidance of the impact plate, so that the cone fog torch turns into a plane fog torch so as to greatly reduce the length of the fog torch with increased sectional area of the fog torch and to make the desulphurization liquid full contact to the smoke gas for a high desulphurization efficiency. At the same time, the atomizing nozzle can reduce the smoke gas with water as a result of the excessive length of the fog torch and simplify the internal structure of the desulphurization tower to shorten the height of the desulphurization tower.

Description

A kind of atomizer that is used for wet method sulphur removing and dust removing

Technical field

The utility model relates to a kind of atomizer that is used for wet method sulphur removing and dust removing, with the gas medium of lower pressure, makes doctor solution obtain the atomization quality of high-quality.

Background technology

The mode that makes the doctor solution atomizing that is used for wet-desulfurizing dust remover known today is that atomizing nozzle atomizes or atomizes with Venturi tube, perhaps makes doctor solution become moisture film.The mechanical atomization quality is low, influences desulfurized effect, Venturi tube atomizing power consumption height, and moisture film is insufficient because of contacting with flue gas, and the consumption of doctor solution is big, and desulfurized effect is poor.

Summary of the invention

The utility model provides a kind of shower nozzle that doctor solution can evenly effectively be atomized in the medium atomization mode that is applicable to wet method sulphur removing and dust removing, uses the pressure of atomizing medium low, and energy consumption is little, and the mist torch is plane, can reduce the size of desulfurization and dedusting tower.

The technical scheme in the invention for solving the technical problem is: shower nozzle is made up of nozzle body, impact disc, mixture, dividing plate, and the pressure of the atomizing medium of use is greater than more than the doctor solution pressure 0.1MPa.The head of nozzle body has several equally distributed nozzle bores and an impact disc fixing threaded hole, and inside is chamber; Mixture is a spool shape structure, and the centre is an air flue, and based on nozzle body, nozzle body and mixture, dividing plate are formed two mixing chambers.At first mixing chamber, gas medium stirs doctor solution with reverse mixing of doctor solution, forms gas-liquid mixture, and improves the pressure of doctor solution, accelerates to flow to the speed of second mixing chamber.At second mixing chamber, the gas-liquid mixture that the gas medium side knock is come by first mixing chamber further stirs gas-liquid mixture, makes gas-liquid mixed even, and increases the gas content in the gas-liquid mixture.Through the nozzle bore high speed ejection of the gas-liquid mixture of twice mixing from nozzle body, its spouting velocity is considerably beyond the required speed of mechanical atomization, therefore the doctor solution of nozzle ejection from then on just comprises two kinds of atomizing types, promptly one, mechanical atomization at a high speed, two, the blast atomizing that forming losing constraint back rapid expanding of the gas in the gas-liquid mixture.Impact disc is the discoid part that has guide effect, atomize again from the atomized flow high speed impact impact disc of nozzle ejection, promptly impact atomizing, and under the guide effect of impact disc, change emission direction, and make taper mist torch become plane mist torch, shortened mist torch length greatly, mist torch sectional area is big, doctor solution and flue gas full contact reduce because of the long flue gas with water that causes of mist torch, and the desulfurizing tower height can shorten.

The beneficial effects of the utility model are: atomizing medium and doctor solution mix through twice, three kinds of atomizing types atomizings, thereby atomizing is evenly, and being shaped as of mist torch is plane, and the mist torch is short and put down, broad covered area, doctor solution and contain dirty flue gas full contact, desulfuration efficiency height.

Use shower nozzle of the present utility model, can also simplify the internal structure of desulfurizing tower, reduce internal structure things such as inner-tower filling material layer, rotating stream tray, reduce the probability that product results in blockage in the tower.

Description of drawings

Below in conjunction with accompanying drawing and example the utility model is further described.

Fig. 1 is the cutaway view after the utility model assembling;

Fig. 2 is the nozzle body outline drawing

Fig. 3 is the cutaway view of nozzle body

Fig. 4 is the mixture outline drawing

Fig. 5 is the cutaway view of mixture;

Fig. 6 is the outline drawing of impact disc.

Among the figure: 1. nozzle body, 2. second mixing chamber, 3. gas-liquid mixed passage, 4. first mixing chamber, 5. dividing plate, 6. doctor solution passage, 7. impact disc, 8. dispersed jet, 9. nozzle bore, 10. mixture, 11. atomization gas passages, 12. shower nozzle pipes.

The specific embodiment

In Fig. 1, mixture (10) is filled in the nozzle body (1), the greatest circle cylinder of mixture (10) is separated into two parts with the inner chamber of nozzle body (1), above a part be second mixing chamber (2), following part and dividing plate (5) are formed first mixing chamber (4), and dividing plate (5) also plays the effect of support fixation mixture (10) simultaneously.The centre of mixture (10) is main gas passage, (10) also have three groups of holes on the mixture, first group is three apertures on the conical surface, be used to import the atomization gas of first mixing chamber (4), second group of hole is six macropores of middle end face, be gas-liquid mixed passage (3) that the 3rd group of hole is three apertures on the face of cylinder, top, be used to import the atomization gas of the interior gas-liquid mixture of side knock second mixing chamber (2).Enter the atomization gas reverse impact doctor solution next of first mixing chamber (4), not only in first mixing chamber (4), make gas-liquid mixed form gas-liquid mixture, improve the pressure of the fluid in first mixing chamber (4) simultaneously by doctor solution passage (3).Gas-liquid mixture in first mixing chamber (4) is after gas-liquid mixed passage (3) enters second mixing chamber (2), suffer the side knock of high speed atomization gas, further aggravation atomization gas mixes with doctor solution, and increase gas-liquid mixture in gas content, the well-mixed gas-liquid mixture of process so far forms dispersed jet (8) by ejection of nozzle bore (9) high speed and atomizing, and the blast that gas sharply expands after losing and retraining in mechanical atomization when its atomizing comprises the fluid high-speed injection and the gas-liquid mixture atomizes.

Head at nozzle body (1) is equipped with an impact disc (7), and shock surface can be adjusted to the distance of the nozzle bore of nozzle body.High speed dispersed jet (8) by nozzle bore (9) ejection impacts on the shock surface of impact disc (7), shock surface is streamlined guide frame, dispersed jet (8) produces just atomizing again and promptly impacts atomizing on this face, and with fairing change direction, thereby change the shape of mist torch, become taper mist torch and be plane mist torch, the mist torch is lacked and broad covered area.The wet-desulfurizing dust remover that is used for flue gas can make doctor solution fully contact with containing dirty flue gas, and absorptivity is higher.

Claims

1, a kind of atomizer that is used for wet method sulphur removing and dust removing is characterized in that: be made up of nozzle body, mixture, dividing plate, impact disc, the pressure of the atomizing medium of use is greater than more than the doctor solution pressure 0.1MPa,

Mixture is packed in the nozzle body, and mixture is separated the nozzle body inner chamber and become two mixing chambers, and dividing plate is mixture fixedly, and is a part of composition first mixing chamber, and the nozzle body head has nozzle bore, at head impact disc is housed also.

2, shower nozzle according to claim 1 is characterized in that: two mixing chambers are separated nozzle body by mixture and are formed, and on nozzle body and the mixture two cascaded surfaces that cooperate are arranged, and top is divided into second mixing chamber, and lower part and dividing plate are formed first mixing chamber.

3, shower nozzle according to claim 1, it is characterized in that: the middle duct of mixture is the passage that certain pressure gas is arranged that is used to atomize, and have gas discharge outlet to lead to first mixing chamber and second mixing chamber respectively, and it is bigger than the gas discharge outlet that enters second mixing chamber to enter the gas discharge outlet of first mixing chamber.

4, the feature of mixture according to claim 3 is: enter the gas discharge outlet of first mixing chamber and the axial line of mixture and intersect at angle, this angle is between 30 ° to 45 °, the discharge direction of gas and the gas approach axis of mixture are reverse, enter the gas discharge outlet of second mixing chamber and the axial line of mixture and intersect at an angle of 90, i.e. gas discharge is horizontal.

5, shower nozzle according to claim 1 is characterized in that: the head of nozzle body has not unnecessary six nozzle bore, and nozzle bore is thin circular hole, and head has one section to be tapered hole.

6, shower nozzle according to claim 1 is characterized in that: several doctor solution access openings are arranged on the dividing plate, and the centre bore of dividing plate is enclosed within on the mixture, is used for supporting and fixing mixture.

7, shower nozzle according to claim 1 is characterized in that: the head center of nozzle body has with screw and is used to install impact disc.

8, shower nozzle according to claim 1, it is characterized in that: the shock surface of impact disc is fairshaped, the diameter of impact disc is not more than the maximum outer through size of nozzle body, and impact disc is to be installed on the nozzle body with being threaded, and can regulate the distance of shock surface to nozzle bore.