External rotation and external mixing double-flow high-temperature atomizing nozzle

Abstract

The utility model provides an external-rotation external-mixing double-flow high-temperature atomizing nozzle, which is characterized in that an outer nozzle is provided with an inclined hole and a rotary hole, the outer nozzle is fixedly riveted with an inner nozzle to form a gas phase channel, the inner nozzle is provided with a liquid phase channel and a spray hole, a cyclone is fixedly mounted in the inner nozzle through a sealing element, the sealing element is provided with a hexagonal through hole, and the hexagonal through hole is communicated with the liquid phase channel. The sealing piece comprises a connecting section and a frustum section, the frustum section is connected with the connecting piece in a sealed and riveted mode, and the outer wall of the cyclone and the inner wall of the inner nozzle form an annular liquid phase channel. The frustum section of the sealing piece is hermetically riveted with the connecting piece, the frustum section is hermetically riveted and fixed with the connecting piece according to a taper sealing design principle, namely, the outer side wall of the frustum section is a conical surface, the connecting piece is sleeved on the conical surface, and the inner wall of the connecting piece is tightly and hermetically connected with the conical surface of the frustum section in a riveting manner, so that the sealing performance of a liquid phase channel under high pressure is ensured; liquid in the liquid-phase channel is prevented from permeating into the gas-phase channel, water dripping of the inclined holes and the rotary holes is prevented, and the atomization effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of atomizing nozzles, and in particular relates to an externally rotating and externally mixing double-flow high-temperature atomizing nozzle. Background Art

[0002] Propylene is the second most important basic organic raw material after ethylene. With the annual expansion of its derivative applications, demand is increasing. According to the "12th Five-Year Plan for the Development of the Olefin Industry," my country's propylene equivalent demand is projected to reach approximately 28 million tons / year by 2015, while production capacity is only 24 million tons / year. This indicates a prolonged supply shortage in the propylene market. Furthermore, the scarcity of petroleum resources necessitates the development of non-petroleum-based propylene production processes. Propane dehydrogenation to propylene and the disproportionation of ethylene with butenes to propylene have attracted considerable attention due to their high propylene selectivity. However, the former relies on propane-rich natural gas as a feedstock, which is geographically limited, while the latter consumes ethylene resources, making both processes incompatible with my country's energy mix. Methanol production from coal or natural gas is already widespread, and methanol-to-light olefins (MTO / MTP) offers advantages such as a wide range of feedstocks and low costs, making it suitable for my country's oil-scarce and coal-rich environment.

[0003] Currently, the methanol-to-olefins technologies that have achieved industrialization include UOP / Hydro's MTO process, the DMTO technology of the Dalian Institute of Chemical Physics of the Chinese Academy of Sciences, and the MTP process of Lurgi in Germany. Both the MTO and DMTO processes target low-carbon olefins and are unable to achieve high selectivity in the production of propylene. The MTP process, on the other hand, primarily produces propylene and has been industrialized in China, achieving high selectivity in the production of propylene from coal. This is well-suited to my country's abundant coal and limited oil resource structure, making it an ideal solution for meeting the country's rapidly growing demand for propylene. Therefore, the development of the MTP process and its catalysts is a key focus in my country's coal chemical industry.

[0004] The MTP process of Lurgi Company in Germany is an integrated coal-synthesis gas-methanol-dimethyl ether-propylene-polypropylene comprehensive process, and its products are polypropylene and by-products such as gasoline, liquefied gas and ethylene.

[0005] The MTP process primarily involves heating fresh methanol from the methanol intermediate tank area and recycled methanol from the methanol recovery tower to 275°C through a series of heat exchangers. The mixture initially reacts in a DME reactor at 275°C and 1.6 MPa over an alumina-based catalyst to produce dimethyl ether (DME). The resulting DME is then mixed with recycled C2 / C4 / C5 / C6 gases and fed into three MTP reactors (two in operation and one in standby). Reactions continue at 480°C and 0.13 MPa over a zeolite-based catalyst to produce various hydrocarbons, with propylene as the primary product. These hydrocarbons are then fed to the next unit: the gas cooling and separation unit.

[0006] 2CH3OH→CH3OCH3(DME)+H2O+Q

[0007] nCH3OCH3→2CnH2n+nH2O+Q(n=2,3,4…)

[0008] As can be seen from the reaction equation, the entire process is exothermic. Since the optimal temperature of the catalyst is 480°C, achieving high conversion rates requires ensuring that the temperature within the furnace is roughly consistent with the optimal reaction temperature. To this end, a series of process nozzles are installed within the reactor to spray low-temperature dimethyl ether (in both liquid and gas phases) into the reactor for temperature regulation. This process requires that the temperature distribution within the controlled reaction zone be uniform and roughly consistent with the optimal reaction temperature. Therefore, high requirements are placed on the nozzle atomization method, atomization particle size and atomization angle, as well as the adjustment ratio, number of nozzles, and position arrangement.

[0009] Most existing atomizing nozzles include an outer nozzle and an inner nozzle. The inner wall of the outer nozzle and the outer wall of the inner nozzle form a gas phase channel, and the inner nozzle is provided with a liquid phase channel. The existing internal mixing atomizing nozzle connects the gas phase channel with the liquid phase channel through a mixing channel, but the complexity and uncertainty in the assembly process cause the liquid in the liquid phase channel to enter the gas phase channel through the mixing channel; the existing external mixing atomizing nozzle is connected to the inner nozzle through a connector and sealed with a copper sheet at the connection, but the sealing strength of the copper sheet is insufficient, causing the liquid in the liquid phase channel to penetrate into the gas phase channel; during use of the existing internal mixing or external mixing atomizing nozzle, the liquid in the liquid phase channel will enter the gas phase channel, causing water dripping at the nozzle of the gas phase channel, affecting the gas-liquid mixing effect.

[0010] Chinese utility model patent publication number CN205650176U discloses a fixed-bed multiphase atomizing nozzle comprising a coaxially arranged cyclone, an inner nozzle, and an outer nozzle. The cyclone head is provided with multiple first cyclone grooves. The outer wall of the cyclone and the inner wall of the inner nozzle define a liquid phase channel. The inner nozzle head is provided with a liquid phase spray hole. The liquid phase channel is connected to the liquid phase spray hole through the first cyclone groove. The area of the outer nozzle head end face is 1.5-5 times the cross-sectional area of the inner nozzle at its maximum cross-section. A fixing hole is provided in the middle of the outer nozzle head end face. The outer wall of the inner nozzle and the inner wall of the outer nozzle define a gas phase channel. Multiple cyclone holes are provided on the outer nozzle head end face surrounding the fixing hole, and the gas phase channel is connected to the cyclone holes. Multiple gas phase spray holes are also provided on the outer nozzle head end face, surrounding the fixing hole and outside the cyclone holes, and the multiple gas phase spray holes are connected to the gas phase channel. This atomizing nozzle significantly improves the atomization angle and atomization diameter, resulting in better atomization effect and a wider atomization range. However, the liquid in the liquid phase channel will enter the gas phase channel, causing water dripping at the nozzle of the gas phase channel, affecting the gas-liquid mixing effect.

[0011] A Chinese utility model patent, publication number CN105664798B, discloses an atomizing nozzle comprising an inner nozzle and an outer nozzle, wherein the inner nozzle is sleeved within the outer nozzle, wherein an outer nozzle cavity is formed between the outer wall of the inner nozzle and the inner wall of the outer nozzle; the inner nozzle has an inner nozzle cavity; a first spray hole is formed at one end of the inner nozzle cavity, and a plurality of second spray holes are formed at one end of the outer nozzle cavity, the plurality of second spray holes are formed around the first spray hole, and the spray direction of the second spray holes is inclined toward the direction close to the first spray hole. The atomizing nozzle of the utility model can directly atomize liquid without the need for a cyclone, thus avoiding the problem of easy clogging of cyclones in the prior art. In addition, the simple atomization process can improve the working efficiency of the equipment. However, liquid in the liquid phase channel can enter the gas phase channel, causing water to drip at the nozzle of the gas phase channel, affecting the gas-liquid mixing effect. Utility Model Content

[0012] The purpose of the utility model is to provide an external rotating external mixing double flow high temperature atomizing nozzle to solve the problems raised in the above background technology.

[0013] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an external-rotating and external-mixing dual-flow high-temperature atomizing nozzle, comprising an outer nozzle and an inner nozzle, the outer nozzle being provided with an oblique hole and a swirl hole, the outer nozzle being fixedly riveted to the inner nozzle to form a gas phase channel, the inner nozzle being provided with a liquid phase channel and a spray hole, a swirler being fixedly installed in the inner nozzle via a seal, the seal being provided with a hexagonal through hole, the seal comprising a connecting section and a frustum section, the frustum section being sealed and riveted with a connecting section, the outer wall of the swirler and the inner wall of the inner nozzle forming an annular liquid phase channel, the swirler being provided with a foaming chamber, a cross guide groove and a second conical surface, the second conical surface being provided with a rotary cut groove, and the number of the oblique holes and the swirl holes being equal.

[0014] Preferably, the rotary cut grooves are symmetrically arranged on the center of the second conical surface.

[0015] Preferably, the inner nozzle is provided with a first cone surface with a cone angle of 35°-48°.

[0016] Preferably, the cone angle of the second cone surface is equal to the cone angle of the first cone surface, the cone angle of the first cone surface is 45°, and the second cone surface is sealingly fitted to the first cone surface.

[0017] Preferably, the number of the inclined holes and the swirl holes are both 6, and the inclined holes are inclined 30° toward the spray hole.

[0018] Preferably, the nozzle hole is a cylindrical hole with a diameter of 0.5 mm to 3 mm.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The utility model has an inner nozzle installed in the outer nozzle, and the inner wall of the outer nozzle and the outer wall of the inner nozzle form a gas phase channel. A liquid phase channel is provided in the inner nozzle, and the gas is ejected from the inclined hole and the inclined spiral hole of the outer nozzle through the gas phase channel. The inner nozzle is sealed and connected with a seal. Specifically, the frustum section of the seal is sealed and riveted with a connector, and the frustum section is sealed and riveted and fixed to the connector through the taper sealing design principle, that is, the outer side wall of the frustum section is a conical surface, and the connector is sleeved on the conical surface. The inner wall of the connector is tightly sealed and connected to the conical surface of the frustum section by riveting, thereby ensuring the sealing of the liquid phase channel under high pressure, preventing the liquid in the liquid phase channel from seeping into the gas phase channel, preventing the inclined hole and the spiral hole from dripping, and improving the atomization effect.

[0021] The cone cavity of the inner nozzle has an angle of 90°, that is, the cone angle of the first cone surface is 45°, which increases the rotary cutting line and improves the linear speed of the liquid after rotary cutting, achieving a better atomization effect and greatly improving the atomization surface. Under the same pressure, the spray surface is wider and the atomization effect is better.

[0022] The external spray is equipped with an inclined hole with a diameter of mm and an inclined spiral hole with a diameter of mm. This solution allows the high-speed airflow to pass through the gas phase channel better, impacting the atomized liquid, achieving further dispersion and atomization effects, and obtaining a larger atomization area and a more uniform atomization effect.

[0023] The connector is provided with an inner hexagon, i.e. a hexagonal through hole, which is convenient for disassembly and cleaning using tools, thereby greatly improving the installation and reliability of the high-temperature double-flow atomizing nozzle and making it easier to inspect and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the first perspective structural view of the present invention.

[0025] Figure 2 This is the second perspective structural view of the present invention.

[0026] Figure 3 It is an exploded structural view of the present invention.

[0027] Figure 4 It is a cross-sectional structural view of the present utility model.

[0028] Figure 5 This is the first perspective structural view of the cyclone of the utility model.

[0029] Figure 6 This is the second perspective structural view of the cyclone of the utility model.

[0030] Figure 7 This is a structural view of the cyclone connector of the utility model.

[0031] Markings in the figure: outer nozzle 1, inner nozzle 2, inclined hole 3, swirl hole 4, gas phase channel 5, liquid phase channel 6, spray hole 7, seal 8, swirler 9, hexagonal through hole 10, connecting section 11, frustum section 12, connecting piece 13, annular liquid phase channel 14, foaming chamber 15, cross guide groove 16, second cone surface 17, rotary cut groove 18, first cone surface 19. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection.

[0033] Example 1:

[0034] like Figure 1-Figure 7 As shown, the utility model provides an external rotating and external mixing dual-flow high-temperature atomizing nozzle, comprising an outer nozzle 1 and an inner nozzle 2. The outer nozzle 1 is provided with an inclined hole 3 and a rotating hole 4. The outer nozzle 1 is fixedly riveted to the inner nozzle 2 to form a gas phase channel 5. The inner nozzle 2 is provided with a liquid phase channel 6 and a spray hole 7. A swirler 9 is fixedly installed in the inner nozzle 2 through a seal 8. The seal 8 is provided with a hexagonal through-hole 10. The seal 8 includes a connecting section 11 and a frustum section 12. The frustum section 12 is sealed and riveted with a connecting member 13. The outer wall of the swirler 9 and the inner wall of the inner nozzle 2 form an annular liquid phase channel 14. The swirler 9 is provided with a foaming chamber 15, a cross guide groove 16, and a second conical surface 17. The second conical surface 17 is provided with a rotary cut groove 18. The number of inclined holes 3 and rotary holes 4 is equal. The rotary cut grooves 18 are symmetrically arranged on the center of the second conical surface 17. The inner nozzle is provided with a first conical surface 19 with a cone angle of 35°-48°. The cone angle of the second conical surface 17 is equal to that of the first conical surface 19, which has a cone angle of 45°. The second conical surface 17 is in tight contact with the first conical surface 19. There are six inclined holes 3 and six spiral holes 4. The inclined holes 3 are inclined 30° toward the nozzle 7. The nozzle 7 is a cylindrical hole with a diameter of 0.5mm-3mm.

[0035] Through the above technical solution, the utility model installs an inner nozzle 2 in the outer nozzle 1, and the inner wall of the outer nozzle 1 and the outer wall of the inner nozzle 2 form a gas phase channel 5. A liquid phase channel 6 is provided in the inner nozzle 2. The gas is ejected from the inclined hole 3 and the inclined spiral hole 4 of the outer nozzle 1 through the gas phase channel 5. The inner nozzle 2 is sealed and connected with a seal 8. Specifically, the frustum section 12 of the seal 8 is sealed and riveted with a connector 13. The frustum section 12 is sealed and riveted to the connector 13 through the taper sealing design principle, that is, the outer side wall of the frustum section 12 is a conical surface, and the connector 13 is sleeved on the conical surface. The inner wall of the connector 13 is tightly sealed and connected to the conical surface of the frustum section 12 by riveting, ensuring the sealing of the liquid phase channel 6 under high pressure, preventing the liquid in the liquid phase channel 6 from seeping into the gas phase channel 5, preventing the inclined hole 3 and the spiral hole 4 from dripping, and improving the atomization effect.

[0036] The conical cavity of the inner nozzle 2 has an angle of 90°, that is, the cone angle of the first cone surface 19 is 45°, which increases the rotary cutting line and improves the linear speed of the liquid after rotary cutting, achieving a better atomization effect, greatly improving the atomization surface, and making the spray surface wider under the same pressure, and achieving a better atomization effect.

[0037] The external spray is equipped with an inclined hole 3 with a diameter of mm and an inclined spiral hole 4 with a diameter of mm. This solution allows the high-speed airflow to pass through the gas phase channel 5 to impact the atomized liquid, achieving further dispersion and atomization effects, and obtaining a larger atomization area and a more uniform atomization effect.

[0038] The connecting piece 13 is provided with an inner hexagon, i.e. a hexagonal through hole 10, which is convenient for disassembly and cleaning using tools, thereby greatly improving the installation and reliability of the high-temperature double-flow atomizing nozzle and making it easier to inspect and maintain.

[0039] Example 2:

[0040] like Figure 1-Figure 7As shown, the utility model includes an outer nozzle 1 and an inner nozzle 2. The outer nozzle 1 is provided with an oblique hole 3 and a swirl hole 4. The oblique hole 3 and the swirl hole 4 are used to control the direction of gas injection to facilitate mixing of the atomized liquid with the gas. The outer nozzle 1 is fixedly riveted to the inner nozzle 2 and forms a gas phase channel 5, that is, the inner wall of the outer nozzle 1 and the outer wall of the inner nozzle 2 form a gas phase channel 5. The inner nozzle 2 is provided with a liquid phase channel 6 and a spray hole 7. The inner nozzle 2 is used to atomize the liquid. The liquid enters the inner nozzle 2 through the liquid phase channel 6 and is then sprayed out through the spray hole 7. The liquid is broken up by air pressure to be atomized. A swirler 9 is fixedly installed in the inner nozzle 2 through a seal 8. The swirler 9 is used to guide the liquid in the inner nozzle 2 to rotate to improve the liquid atomization effect. The seal 8 has six The angular through hole 10, the sealing member 8 includes a connecting section 11 and a frustum section 12. The connecting section 11 of the sealing member 8 is fixedly mounted on the inner nozzle 2 through a threaded structure. The end face of the connecting section 11 is connected to the cyclone 9, so that the second conical surface 17 of the cyclone 9 is sealed and fitted with the first conical surface 19 of the inner nozzle 2. When assembling or disassembling, the sealing member 8 is screwed out of the inner nozzle 2 through the hexagonal through hole 10 in conjunction with a wrench, which facilitates the assembly and removal of the cyclone 9. The frustum section 12 is sealed and riveted with a connecting member 13. The frustum section 12 is sealed and riveted with the connecting member 13 through the taper sealing design principle to ensure the sealing of the liquid phase channel 6 under high pressure, prevent the liquid in the liquid phase channel 6 from seeping into the gas phase channel 5, and prevent the inclined hole 3 and the swivel hole 4 Dripping, improve the atomization effect, the outer wall of the cyclone 9 and the inner wall of the inner nozzle 2 form an annular liquid phase channel 14, the cyclone 9 is provided with a foaming chamber 15, a cross guide groove 16 and a second cone 17. During the production and manufacturing process of the present invention, the second cone 17 is sealed with the first cone 19 of the inner nozzle 2, and the first cone 19 is much larger than the second cone 17, that is, a part of the area of the first cone 19 covers the opening of the foaming chamber 15, and the tip of the first cone 19 extends to the nozzle 7. During the liquid atomization process, the liquid enters the interior of the inner nozzle 2 through the liquid phase channel 6, and then enters the annular liquid phase channel 14 through the cross guide groove 16. A rotary cutting groove 18 is provided on the second cone 17, and the rotary cutting groove 18 is provided with two The rotary cutting groove 18 and the first cone surface 19 cooperate to form a tubular channel. The annular liquid phase channel 14 is connected to the foaming chamber 15 through the rotary cutting groove 18. The liquid is injected into the foaming chamber 15 through the rotary cutting groove 18. Since there are two rotary cutting grooves 18 and they are arranged in a central symmetrical manner, the liquid is injected into the foaming chamber 15 through the two hole rotary cutting grooves 18 at the same time. The two liquid flows collide in the foaming chamber, and the convection forms a vortex, and is compressed into the inside of the foaming chamber 15, so that the liquid foams in the foaming chamber 15. The foamed liquid moves toward the tip of the first cone surface 19 under pressure and is sprayed to the outside through the nozzle 7, realizing the liquid atomization process. The foamed liquid is foamed by foaming to improve the liquid atomization effect.The number of the inclined holes 3 and the spiral holes 4 is equal, and the number of the inclined holes 3 and the spiral holes 4 is the same, so that the inclined holes 3 and the spiral holes 4 can correspond one to one, thereby improving the gas-liquid external mixing effect. The inclined holes 3 are inclined toward the nozzle hole 7. In the external mixing process of the utility model, the atomized liquid is sprayed out by the nozzle hole 7, and the sprayed atomized liquid is diffused in a cone shape. The inclined holes 3 are inclined and point to the nozzle hole 7. The gas phase channel 5 sprays a high-speed airflow through the inclined holes 3. At this time, the high-speed airflow shears the atomized liquid for the first time. The shearing position is at the cone surface of the atomized liquid in a cone shape, and the atomized liquid is impacted and crushed, so that the atomized liquid particles are crushed again, thereby improving the liquid atomization effect and further improving the gas-liquid mixing effect. After the high-speed airflow sprayed by the inclined hole 3 and the atomized liquid are sheared for the first time, It also has an impact force, continuing to impact and inject into the interior of the atomized liquid that diffuses in a cone shape, and shearing the atomized liquid inside for a second time, so that the atomized liquid is impacted and crushed for a second time, so that the atomized liquid particles are crushed again for a second time, further improving the atomization effect of the liquid and improving the gas-liquid mixing effect. At the same time, the gas phase channel 5 ejects a high-speed airflow through the swirl hole 4. The injection direction of the high-speed airflow is along the tangent of the outer nozzle 1 and sprayed downward. The high-speed airflow impacts and crushes the periphery of the atomized liquid that diffuses in a cone shape, and shears the atomized liquid for a third time, so that the atomized liquid is crushed three times, further improving the gas-liquid mixing effect. At the same time, the high-speed airflow ejected from the swirl hole 4 drives the atomized liquid to rotate, and under the action of centrifugal force, the diffusion area after gas-liquid mixing is increased.

[0041] The second conical surface 17 of the present invention is provided with a rotary cutting groove 18 symmetrically at the center, that is, there are two rotary cutting grooves 18, and they are arranged in a centrally symmetrical manner. A high-speed liquid flow is injected into the foaming chamber 15 at the same time through the two rotary cutting grooves 18. The two liquid flows collide in the foaming chamber, and convection forms a vortex, and are compressed into the foaming chamber 15, so that the liquid foams in the foaming chamber 15. The foamed liquid moves toward the tip of the first conical surface 19 under the action of pressure and is sprayed to the outside through the nozzle 7, thereby realizing the liquid atomization process. The foamed liquid is foamed by foaming, thereby improving the liquid atomization effect.

[0042] The inner nozzle 2 of the present invention is provided with a first conical surface 19 having a conical angle of 35° to 48°, and the cyclone 9 is provided with a second conical surface 17 having the same conical angle as the first conical surface 19. When the cyclone 9 is assembled, the second conical surface 17 of the cyclone 9 and the first conical surface 19 of the inner nozzle 2 have the same conical angle, so that the second conical surface 17 and the first conical surface 19 are sealed and fitted together, preventing liquid leakage and forcing the liquid to be injected into the cyclone chamber only from the injection hole, thereby increasing the speed of the liquid flow, increasing the rotation speed of the liquid flow in the cyclone chamber, and improving the atomization effect.

[0043] In actual use, the first conical surface 19 is much larger than the second conical surface 17, that is, a portion of the first conical surface 19 covers the opening of the swirl chamber, and the tip of this portion of the first conical surface 19 extends to the spray hole 7. The fluid is guided by the swirl chamber, and the swirling liquid moves toward the tip of the first conical surface 19 under the action of pressure and is sprayed to the outside through the spray hole 7, realizing the liquid atomization process. The cone angle of the first conical surface 19 of the inner nozzle 2 is 35° to 48°. By adjusting the cone angle of the first conical surface 19, the atomization spray angle of the spray hole 7 is increased, the atomization surface is improved, and at the same pressure, the spray surface is wider, and the atomization effect is better. At the same pressure, when the cone angle of the second conical surface 17 is 45°, the atomization spray effect is the best, and the atomization spray angle is about 92°.

[0044] The number of the inclined holes 3 and the spiral holes 4 of the present invention are both pieces, and the inclined holes 3 are inclined 30° toward the axial direction of the inner nozzle 2 (that is, the inclined holes 3 are inclined and point to the nozzle hole 7). The diameter of the inclined holes 3 is mm, and the diameter of the spiral holes 4 is mm. This solution is used to better pass the high-speed airflow through the gas phase channel 5 to impact the atomized liquid, thereby achieving further dispersion and atomization effects, and obtaining a larger atomization area and a more uniform atomization effect. During the external mixing process of the present invention, the atomized liquid is sprayed out from the nozzle hole 7, and the sprayed atomized liquid is diffused in a cone shape. The inclined hole 3 is inclined and points to the nozzle hole 7, and the gas phase channel 5 sprays a high-speed airflow through the inclined hole 3. The inclined hole 3 is set at an angle of 30° toward the axial direction of the inner nozzle 2, so that the high-speed airflow sprayed from the inclined hole 3 impacts and breaks the atomized liquid particles, so that the atomized liquid particles are broken into smaller liquid particles, thereby improving the atomization effect and improving the gas-liquid mixing effect.

[0045] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0046] The above description is only used to illustrate the technical solution of the present invention and is not intended to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims as long as they do not depart from the spirit and scope of the technical solution.

Claims

1. An external rotating external mixing double flow high temperature atomizing nozzle, comprising an outer nozzle and an inner nozzle, wherein the outer nozzle is provided with an oblique hole and a rotating hole, the outer nozzle is fixedly riveted to the inner nozzle to form a gas phase channel, and the inner nozzle is provided with a liquid phase channel and a spray hole, characterized in that: A swirler is fixedly installed in the inner nozzle via a seal. The seal is provided with a hexagonal through-hole. The seal includes a connecting section and a frustum section. The frustum section is sealed and riveted with a connecting piece. The outer wall of the swirler and the inner wall of the inner nozzle form an annular liquid phase channel. The swirler is provided with a foaming chamber, a cross guide groove, and a second conical surface. The second conical surface is provided with a rotary cut groove. The number of the inclined holes is equal to the number of the rotary holes.

2. The external rotating external mixing double flow high temperature atomizing nozzle according to claim 1, characterized in that: The rotary cut grooves are symmetrically arranged on the center of the second conical surface.

3. The external rotating external mixing double flow high temperature atomizing nozzle according to claim 1, characterized in that: The inner nozzle is provided with a first cone surface with a cone angle of 35°-48°.

4. The external rotating external mixing double flow high temperature atomizing nozzle according to claim 3, characterized in that: The cone angle of the second cone surface is equal to the cone angle of the first cone surface, the cone angle of the first cone surface is 45°, and the second cone surface is sealingly attached to the first cone surface.

5. The external rotating external mixing double flow high temperature atomizing nozzle according to claim 1, characterized in that: The number of the inclined holes and the number of the swirl holes are both 6, and the inclined holes are inclined 30 degrees toward the spray hole.

6. The external rotating external mixing double flow high temperature atomizing nozzle according to claim 1, characterized in that: The nozzle hole is a cylindrical hole with a diameter of 0.5mm-3mm.

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