Distillation atomizing nozzle

Abstract

The utility model discloses a distillation atomizing nozzle. The spray head comprises a gas vertical pipe, a liquid vertical pipe and a spray disc, the gas vertical pipe is concentrically sleeved with the liquid vertical pipe, an arc surface is arranged in a lower port of the gas vertical pipe and matched with a spherical spray head seat of the spray disc to form a circumferential gas spray opening, gas sprayed out of the gas spray opening cuts liquid on the periphery of the gas spray opening, and atomization of the liquid is achieved. The spraying disc is of an integrated structure of a threaded ring, a support and a nozzle seat, the threaded ring is connected with the liquid stand pipe through external threads, the nozzle seat is fixed to the threaded ring through the support, and the threaded ring is screwed to achieve adjustment of the size of the gas nozzle. A cambered surface is arranged in the lower end opening of the liquid vertical pipe and can reflect high-speed gas sprayed out of the gas nozzle, and cutting and fine atomization of liquid drops are achieved. The atomization device is good in atomization effect, simple in structure and low in manufacturing and maintenance cost.

Description

Technical Field

[0001] The utility model is applied to the field of chemical industry and relates to the separation of volatile components by liquid distillation, in particular to a nozzle for atomizing liquid. Background Art

[0002] Distillation is a thermodynamic separation process that uses the different boiling points of the components in the mixed liquid to evaporate and separate the low-boiling volatile components. It is related to the gas-liquid equilibrium constant and the relative volatility of the two components. In order to speed up distillation, in addition to controlling temperature and pressure, it is also necessary to increase the gas-liquid interface. For this purpose, atomizing the liquid helps the distillation speed.

[0003] Nozzles are used in various industries, and there are many patent applications, such as metal powder atomization, fire extinguishing agent nozzle atomization, desulfurization atomization, liquid combustion atomization, etc. In the metal powder manufacturing industry, the metal powder atomization nozzle allows the metal liquid to flow from top to bottom in the middle, and the atomizing gas blows around the liquid flow at high speed to the center, so that the metal liquid is atomized into metal powder. For example, CN101596601B is an atomizing nozzle for efficiently preparing fine metal and alloy powders, CN216297959U is a split Laval type gas atomizing nozzle, CN111975007B is an atomizing nozzle and atomizing device, CN109894623A is a double-layer atomizing nozzle suitable for the field of metal powder preparation, etc. In the fire extinguishing equipment industry, there are CN2778394Y atomizing nozzle, CN2541057Y a high-pressure fine water mist nozzle, CN208303093U atomizing nozzle, CN202527303U atomizing nozzle, CN201454715U multifunctional fine water mist nozzle, etc., which atomize water or liquid fire extinguishing agent to extinguish fire. The above two types of nozzles, one is atomization to refine the metal powder and improve the roundness, and the other is atomization of the fire extinguishing agent to expand the fire extinguishing area, which is irrelevant to the purpose of increasing the dynamic process of the nozzle in this application.

[0004] The purpose of desulfurization atomization and liquid combustion atomization is to increase the desulfurization reaction rate or the liquid combustion rate, which is consistent with the purpose of this application. CN104289339A discloses a desulfurization atomization nozzle structure, which is convenient for the replacement of the gas nozzle and the nozzle; CN104368234A provides a desulfurization atomization nozzle for chemical industry, which is consistent with the above nozzle, but with an additional mounting structure. The flue gas desulfurization atomization nozzle of the chemical plant of CN203244912U is basically the same as the above nozzle structure. CN108906367A is a desulfurization atomization nozzle for chemical industry, in which the liquid outer nozzle is equipped with the gas inner nozzle, the inner nozzle is a Laval cavity nozzle, the outer nozzle is a conical nozzle cavity, and the two nozzles are in a straight line. CN114688527A discloses a gas-assisted atomization nozzle with a cross-spray hole structure, in which the gas and liquid are mixed in a spiral manner in the main mixing chamber, and sprayed out from the cross-spray hole to achieve liquid atomization and increase the gas and liquid interface area for the purpose of combustion assistance. CN203162943U discloses a high-efficiency fuel atomizing nozzle. An outer air pipe is sleeved on an inner oil pipe. Compressed air enters the oil pipe in advance to make the liquid foam. The liquid then enters the oil outlet passage through a rotator. In the oil outlet passage, the liquid is acted upon by the compressed air and sprayed out from a nozzle in an atomized form.

[0005] Among the above-mentioned atomizing nozzles, 1) those in which the gas and liquid flow in a straight line have poor atomization effect. Relatively speaking, nozzles in which the gas has a cutting effect on the liquid have good atomization effect; 2) some nozzles have complex structures, high manufacturing costs, and long installation and maintenance time; 3) some nozzles are not suitable for environments with more stringent working conditions, such as high temperature, separated spaces, etc. Utility Model Content

[0006] The technical problem solved by the utility model is to provide a distillation atomizing nozzle, which utilizes the cutting effect of gas on liquid to atomize, and has good atomizing effect. The nozzle has a simple structure and low manufacturing and maintenance costs. It can be used in high temperature environments and can also be used to separate chambers.

[0007] The technical solution adopted by the utility model is: the distillation atomizing nozzle includes a nozzle, an air main pipe, an air ring pipe, a liquid ring pipe, a liquid main pipe, etc. The upper part of the air riser is connected to the air ring pipe, and the air ring pipe is connected to the air main pipe; the upper part of the liquid riser is connected to the liquid ring pipe, and the liquid ring pipe is connected to the liquid main pipe. The nozzle includes an air riser, a liquid riser and a spray plate; the air riser is concentrically sleeved in the liquid riser; the lower port of the air riser has an arc surface, and the arc surface cooperates with the spherical nozzle seat of the spray plate to form a circumferential air nozzle. The gas sprayed from the air nozzle can cut the liquid on its periphery to achieve liquid atomization.

[0008] Preferably, the spray plate includes a threaded ring, a bracket, and a spray head seat. The threaded ring is threadedly connected to the outer surface of the lower port of the liquid riser, and the spray head seat is fixedly connected to the threaded ring through the bracket. By screwing the threaded ring, the spray head seat can be moved up and down to adjust the size of the gas nozzle.

[0009] Preferably, the lower port of the liquid riser is an arc surface, which can reflect the high-speed gas ejected from the gas nozzle to achieve fine atomization of the liquid droplets.

[0010] Preferably, in order to ensure the consistency of the circumferential size of the gas nozzle, the lower end of the liquid riser is gap-sealed to connect the nozzle outer tube, and the lower end of the gas riser is threadedly connected to the nozzle inner tube, and the nozzle outer tube and the nozzle inner tube are fixed concentrically. The lower end of the nozzle inner tube has an arc surface inside, which cooperates with the spherical nozzle seat to form a circumferential gas nozzle.

[0011] Preferably, the liquid main pipe can be replaced by a residual liquid pipe, and the atomizing nozzle of the utility model can be applied to other chambers.

[0012] Preferably, the tangential cone angle δ of the gas nozzle is 60°-120°, a small tangential cone angle is suitable for atomization, and a large tangential cone angle is suitable for fine atomization.

[0013] The utility model has the following beneficial effects: the utility model utilizes high-speed gas to cut liquid atomization, and has good atomization effect. The nozzle structure is simple, the manufacturing and maintenance cost is low, and it can be used in harsh environments such as high temperature and high cold. In special cases, the two chambers can also be isolated to achieve the independence of the two chambers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the front view of the structure of Example 1;

[0015] Figure 2 yes Figure 1 A top view schematic diagram of

[0016] Figure 3 yes Figure 1 AA cross-sectional view of ;

[0017] Figure 4 is an enlarged schematic diagram of the nozzle of Example 1;

[0018] Figure 5 is a schematic diagram of the nozzle structure of Example 2;

[0019] Figure 6 yes Figure 5 BB cross-sectional view;

[0020] Figure 7 is a schematic diagram of the nozzle structure of Example 3;

[0021] Figure 8 is a schematic diagram of the front view of the structure of Example 4;

[0022] Fig. 9 yes Figure 8 A top view schematic diagram of

[0023] In the figure: 1- nozzle, 2- gas main pipe, 3- gas ring pipe, 4- liquid ring pipe, 5- liquid main pipe, 6- residual liquid pipe;

[0024] 11-gas riser, 12-liquid riser, 13-threaded ring, 14-bracket, 15-nozzle seat, 16-nozzle outer tube, 17-nozzle inner tube, 18-positioning rod, 19-sealing pad. DETAILED DESCRIPTION

[0025] The following “upper and lower” refers to the Figure 1 The upper and lower relative positions shown; the "inside and outside" below refers to the inside and outside of the tube.

[0026] Example 1.

[0027] The structure of the atomizing nozzle in this embodiment is shown in the attached Figure 1-4 As shown, it includes a nozzle 1, a gas main pipe 2, a gas ring pipe 3, a liquid ring pipe 4, a liquid main pipe 5, etc. The liquid main pipe 5 is connected to the liquid ring pipe 4, and the raw material liquid or residual liquid to be distilled is fed to the nozzle 1. The gas main pipe 2 is connected to the gas ring pipe 3, and the gas required for distillation, such as steam or volatile gas, is fed to the nozzle 1. The gas ring pipe 3 and the liquid ring pipe 4 are connected to the nozzle 1, and the nozzles 1 are evenly distributed in the circumferential direction of the ring pipe.

[0028] The structure of nozzle 1 is shown in the attached Figure 3 and attached Figure 4 As shown, it includes a gas riser 11, a liquid riser 12 and a spray plate. The upper part of the gas riser 11 is connected to the gas ring tube 3, and the upper part of the liquid riser 12 is connected to the liquid ring tube 4. The gas riser 11 is sleeved in the liquid riser 12, and the two are concentric. The inner ridges of the lower port of the gas riser 11 are processed into a circular arc surface, and the inner ridges of the lower port of the liquid riser 12 are processed into a circular arc surface. The spray plate is located below the lower ports of the two risers. The spray plate includes a threaded ring 13, a bracket 14, a nozzle seat 15, etc. The threaded ring 13 is threadedly connected to the outer surface of the lower port of the liquid riser 12, and the nozzle seat 15 is fixedly connected to the threaded ring 13 through a cross-shaped bracket 14. The nozzle seat 15 is hemispherical, and its spherical surface matches the circular arc surface of the lower port of the gas riser 11.

[0029] The spherical surface of the nozzle seat 15 and the arc surface of the lower port of the gas riser 11 form a circular gas nozzle. The cross section of the nozzle is similar to the cross section of the Laval nozzle. The inside of the nozzle is similar to the contraction tube of the Laval nozzle, and the outside is similar to the expansion tube of the Laval nozzle, but the size is shorter. The gas in the gas riser 11 can be ejected from the circular gas nozzle at high speed to cut and atomize the liquid in the liquid riser 12. The gas ejected from the gas nozzle at high speed is reflected downward after encountering the arc surface of the lower port of the liquid riser 12, and cuts the liquid again, as shown in the attached Figure 4 As shown, the already atomized droplets are atomized, the droplets are further refined, and the contact area between the liquid and the gas is increased. In order to ensure that the liquid can be cut again, the tangential cone angle δ at the narrowest part of the gas nozzle is preferably 90°-120°. The larger the angle, the greater the pressure formed by the gas in the reflection area, which is more unfavorable for the liquid to flow down.

[0030] In this embodiment, the lower ends of the two vertical pipes are machined with arc surfaces, and the spray disc can be threadedly connected, which has a simple structure and low manufacturing and maintenance costs. The threaded connection can adjust the size of the gas nozzle, and the high-speed gas cuts the liquid twice to form a fine atomization, which has a good atomization effect and helps to increase the contact surface area between the gas and the liquid. This embodiment has no obstacles of thermal expansion and contraction, and can be applied to high temperature and high cold environments.

[0031] Example 2.

[0032] When the conditions such as distillation can be satisfied by a single atomization, the nozzle of the structure of this embodiment can be used. Figure 5 The difference from Example 1 is that the reflective arc surface of the lower port of the liquid riser 12 is removed, making the nozzle design, manufacturing and maintenance simpler. The tangential cone angle δ at the narrowest part of the gas nozzle is preferably 60°-90°, the ball diameter of the nozzle seat 15 is reduced, and the liquid flows down more smoothly.

[0033] Example 3.

[0034] In the above two embodiments, the spherical surface of the nozzle seat 15 cooperates with the arc surface of the lower port of the gas riser 11 to form a circumferential gas nozzle. The nozzle seat 15 is threadedly connected to the liquid riser 12. If the gas riser 11 and the liquid riser 12 are eccentric, the matching size and atomization effect of the gas nozzle will inevitably be affected. In order to ensure the concentricity of the nozzle seat 15 and the gas riser 11, this embodiment is adopted. Figure 7 As shown, the lower ends of the gas riser 11 and the liquid riser 12 are divided into two sections. The lower end of the liquid riser 12 is the nozzle outer tube 16, and the lower end of the gas riser 11 is the nozzle inner tube 17. The lower end of the nozzle inner tube 17 is a circular arc surface, which cooperates with the spherical surface of the nozzle seat 15 to form a circumferential gas nozzle. The nozzle outer tube 16 and the nozzle inner tube 17 are fixed as a whole by positioning rods 18 evenly distributed around the circumference, thereby ensuring the concentricity of the nozzle inner tube and the nozzle outer tube. The nozzle outer tube 16 and the liquid riser 12 are gap-matched, and a sealing gasket 19 is installed in the gap to ensure the sealing of the liquid riser 12. The nozzle inner tube 17 is threadedly connected to the gas riser 11, and the spray plate structure is the same as the above embodiment.

[0035] In this embodiment, since the inner and outer tubes are fixedly connected and the concentricity is ensured, the size of the circumferential gas nozzle is consistent. Even if there is eccentricity between the gas riser 11 and the liquid riser 12, when the inner tube of the nozzle is threadedly connected to the gas riser, the gap between the outer tube of the nozzle and the liquid riser can adapt to the eccentricity. In the above two embodiments, the pressure of the atomized high-pressure gas acting on the nozzle seat 15 is borne by the outer thread of the liquid riser 12, while in this embodiment, it is borne by the inner thread of the gas riser 11.

[0036] Example 4.

[0037] The structure of the atomizing nozzle in this embodiment is shown in the attached Figure 8and attached Fig. 9 As shown, a residual liquid pipe 6 is used to replace the liquid main pipe 5 to enter the liquid, and the residual liquid pipe 6 is designed in the center of the ring pipe. The other structures are the same as the above embodiment. This embodiment is applied to the lifting chamber, and the residual liquid after distillation flows downward from the residual liquid pipe 6 into the atomizing nozzle by gravity, and high-pressure steam is ejected from the gas main pipe 2, the gas ring pipe 3, and the gas riser 11 at a high speed from the nozzle to atomize the residual liquid. Even if there is a pressure difference between the lifting chamber and the distillation chamber, the two chambers can be isolated at the atomizing nozzle, and the atomization effect of the residual liquid will not be affected by the pressure difference between the two chambers. The smaller the tangential cone angle δ, the more the negative pressure generated by the high-speed ejected gas is conducive to the downward flow of the residual liquid, and the better the isolation effect of the two chambers.

[0038] The utility model takes the lower spray as an embodiment, and can also be installed into an upper spray structure.

[0039] The utility model utilizes the cutting effect of the high-speed gas in the inner tube on the liquid in the outer tube to atomize the liquid droplets, and has a good atomization effect. The nozzle has a simple structure, the components are processed separately, and the threaded connection is low in manufacturing and maintenance costs. There is no expansion and contraction barrier, and it can be used in high temperature, high cold and other environments. The high-pressure gas at the nozzle plays a role in isolating the two chambers, realizing the independence of the two chambers.

Claims

1. A distillation atomizing nozzle, comprising a nozzle, characterized in that: The nozzle comprises an air riser (11), a liquid riser (12) and a spray plate; the air riser (11) is concentrically sleeved inside the liquid riser (12); the lower end of the air riser (11) has an arc surface inside, and the arc surface cooperates with the spherical nozzle seat (15) of the spray plate to form a circumferential air nozzle.

2. A distillation atomizing nozzle according to claim 1, characterized in that: The spray plate comprises a threaded ring (13), a bracket (14), and a spray head seat (15); the threaded ring (13) is threadedly connected to the outer surface of the lower port of the liquid riser (12), and the spray head seat (15) is fixedly connected to the threaded ring (13) through the bracket (14).

3. A distillation atomizing nozzle according to claim 1, characterized in that: The lower end of the liquid riser pipe (12) has an arc surface inside.

4. A distillation atomizing nozzle according to claim 1 or 3, characterized in that: The lower end of the liquid riser (12) is gap-sealedly connected to the nozzle outer tube (16), and the lower end of the gas riser (11) is threadedly connected to the nozzle inner tube (17). The nozzle outer tube (16) and the nozzle inner tube (17) are concentrically fixed; the lower end of the nozzle inner tube (17) has an arc surface inside, which cooperates with the spherical nozzle seat (15) to form a circumferential gas nozzle.

5. A distillation atomizing nozzle according to claim 1, characterized in that: The upper part of the gas riser (11) is connected to the gas ring pipe (3), and the gas ring pipe (3) is connected to the gas main pipe; the upper part of the liquid riser (12) is connected to the liquid ring pipe (4), and the liquid ring pipe (4) is connected to the liquid main pipe.

6. A distillation atomizing nozzle according to claim 5, characterized in that: The liquid main pipe is replaced by the residual liquid pipe.

7. A distillation atomizing nozzle according to claim 1, characterized in that: The tangential cone angle δ of the gas nozzle is 60°-120°.

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