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

Abstract

The utility model provides an internal-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 swirler is fixedly mounted in the inner nozzle through a sealing element, the sealing element is provided with a hexagonal through hole, and the inner nozzle is provided with a liquid phase channel and a spray hole. The sealing piece comprises a connecting section and a frustum section, the frustum section is hermetically riveted with a connecting piece, the cyclone is provided with a cyclone chamber, a flow guide groove, a notch surface and a liquid injection hole, the notch surface and the inner wall of the inner nozzle form a liquid phase shunting channel, the cyclone chamber is communicated with the liquid phase shunting channel through the liquid injection hole, and the number of the inclined holes is equal to that of the rotary holes. In the working process, liquid is injected from the liquid phase channel, flows into the liquid phase flow dividing channel through the flow guide groove and is forced to be injected into the rotational flow chamber from the liquid injection hole, the injected liquid is guided to rotate at a high speed under the action of the circular face of the rotational flow chamber, the rotational flow liquid moves towards the tip of the first conical face under the action of pressure and is sprayed to the outside through the spraying hole, 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 internal-rotating and external-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] Existing nozzles primarily use a cyclone. Liquid ejected from the nozzle then rotates through the cyclone, creating a solid cone-shaped spray field with a uniform gas-liquid mixture. However, the cyclone in existing dual-fluid atomizing nozzles cannot increase the linear velocity of the liquid's rotation, resulting in poor atomization.

[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 cyclone cannot increase the linear velocity of the liquid rotation, resulting in poor atomization effect of the liquid.

[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 first spray hole. The atomizing nozzle of this utility model can directly atomize the liquid without the need for a cyclone, thus avoiding the problem of clogging of cyclones in the prior art. Furthermore, the atomization process is simple, which can improve the operating efficiency of the equipment. However, the cyclone cannot increase the linear velocity of the liquid rotation, resulting in poor liquid atomization. Utility Model Content

[0012] The purpose of the utility model is to provide an internal rotation and 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 internal-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 inclined 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 through 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 swirler being provided with a swirl chamber, a guide groove, a notch and a liquid injection hole, the notch forming a liquid phase diversion channel with the inner wall of the inner nozzle, the swirl chamber being connected to the liquid phase diversion channel through the liquid injection hole, and the number of the inclined holes and the swirl holes being equal.

[0014] Preferably, the cyclone is provided with injection holes symmetrically at its center, and the injection holes are arranged along the tangent line of the inner wall of the cyclone chamber.

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

[0016] Preferably, the cyclone is provided with a second conical surface having a conical angle equal to that of the first conical surface, the conical angle of the second conical surface is 45°, and the second conical surface is sealingly fitted to the first conical 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 comprises an inner nozzle installed in the outer nozzle, 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, gas is ejected from the oblique hole and the oblique swirl hole of the outer nozzle through the gas phase channel, a swirler is installed inside the inner nozzle, the swirler is fixed to the inner nozzle through a connecting piece, the swirler is provided with a guide groove and a notch, the notch and the inner wall of the inner nozzle form a liquid phase diversion channel, the liquid phase channel is connected to the liquid phase diversion channel through the guide groove, a swirl chamber is provided in the swirl chamber, the swirl chamber is provided with a liquid injection hole, the liquid injection hole connects the swirl chamber and the liquid phase diversion channel, and the liquid injection hole is arranged along the tangent of the swirl chamber. During operation, liquid is injected from the liquid phase channel, flows into the liquid phase diversion channel through the guide groove, and is forced to be injected into the swirl chamber from the liquid injection hole. Under the action of the circular surface of the swirl chamber, the injected liquid is guided to rotate at high speed. Under the action of the pressure, the swirling liquid moves toward the tip of the first cone surface and is ejected to the outside through the spray hole, thereby 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 connector is provided with a frustum section, which is connected to the connector in a tapered sealing manner, eliminating the existing copper ring seal, reducing the complexity and uncertainty in the assembly process, and ensuring the sealing of the liquid phase channel under high pressure.

[0023] 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.

[0024] 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

[0025] Figure 1 This is the first perspective structural view of the present invention.

[0026] Figure 2 This is the second perspective structural view of the present invention.

[0027] Figure 3 It is an exploded structural view of the present invention.

[0028] Figure 4 It is a cross-sectional structural view of the present utility model.

[0029] Figure 5This is the first perspective structural view of the cyclone of the utility model.

[0030] Figure 6 This is the second perspective structural view of the cyclone of the utility model.

[0031] Figure 7 This is a structural view of the cyclone connector of the utility model.

[0032] 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, swirl chamber 14, guide groove 15, notched surface 16, injection hole 17, liquid phase diversion channel 18, first conical surface 19, second conical surface 20. DETAILED DESCRIPTION

[0033] 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.

[0034] Example 1:

[0035] like Figure 1-Figure 7 As shown, the present invention provides an internal-swirl, 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 oblique hole 3 and a swirl 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 mounted within the inner nozzle 2 via a seal 8. The seal 8 has a hexagonal through-hole 10. The seal 8 includes a connecting section 11 and a frustum section 12. The frustum section 12 is riveted to a connecting member 13. The swirler 9 is provided with a swirl chamber 14, a guide groove 15, a notch 16, and a liquid injection hole 17. The notch 16 forms a liquid phase diversion channel 18 with the inner wall of the inner nozzle 2. The swirl chamber 14 is connected to the liquid phase diversion channel 18 through the liquid injection hole 17. The oblique holes 3 and swirl holes 4 are equal in number. The swirler 9 is centrally symmetrically provided with the liquid injection hole 17, which is arranged along a tangent to the inner wall of the swirl chamber 14. The inner nozzle 2 has a first conical surface 19 with a cone angle of 35°-48°. The swirler 9 has a second conical surface 20 with the same cone angle as the first conical surface 19, at a cone angle of 45°. The second conical surface 20 seals against the first conical surface 19. There are six inclined holes 3 and six swirl 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.

[0036] Through the above technical solution, the utility model is installed in the outer nozzle 1 with the inner nozzle 2, the inner wall of the outer nozzle 1 and the outer wall of the inner nozzle 2 form a gas phase channel 5, and a liquid phase channel 6 is provided in the inner nozzle 2. The gas is ejected from the inclined hole 3 and the inclined swirl hole 4 of the outer nozzle 1 through the gas phase channel 5. A swirler 9 is installed inside the inner nozzle 2. The swirler 9 is fixed to the inner nozzle 2 through a connecting piece 13. The swirler 9 is provided with a guide groove 15 and a notch 16. The notch 16 and the inner wall of the inner nozzle 2 form a liquid phase diversion channel 18. The liquid phase channel 6 is connected to the liquid phase diversion channel 18 through the guide groove 15. A swirl chamber 14 is provided in the cyclone 9, and an injection hole 17 is provided in the swirl chamber 14. The injection hole 17 connects the swirl chamber 14 with the liquid phase diversion channel 18, and the injection hole 17 is arranged along the tangent of the swirl chamber 14. During operation, liquid is injected from the liquid phase channel 6, flows into the liquid phase diversion channel 18 through the guide groove 15, and forces the liquid to be injected into the swirl chamber 14 from the injection hole 17. Under the action of the circular surface of the swirl chamber 14, the injected liquid is guided to rotate at a high speed. The swirling liquid moves toward the tip of the first cone surface 19 under the action of pressure and is sprayed to the outside through the nozzle 7, thereby improving the atomization effect.

[0037] 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.

[0038] The connecting piece 13 is provided with a frustum section 12, which is connected to the connecting piece 13 in a tapered sealing manner, eliminating the existing copper ring seal 8, reducing the complexity and uncertainty in the assembly process, and ensuring the sealing of the liquid phase channel 6 under high pressure.

[0039] The external spray is provided with 6 inclined holes 3 with a diameter of 2 mm and 6 inclined spiral holes 4 with a diameter of 3 mm. This solution allows the high-speed airflow through the gas phase channel 5 to impact the atomized liquid, achieving further dispersion and atomization effects, obtaining a larger atomization area and a more uniform atomization effect.

[0040] 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.

[0041] Example 2:

[0042] 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 is provided with a hexagonal through hole 10. The seal 8 includes a connecting section 11 and the frustum section 12, the connecting section 11 of the seal 8 is fixedly installed on the inner nozzle 2 through a threaded structure, and the end face of the connecting section 11 is connected to the cyclone 9, so that the second cone surface 20 of the cyclone 9 is sealed and fitted with the first cone surface 19 of the inner nozzle 2. When assembling or disassembling, the seal 8 is screwed out from the inner nozzle 2 through the hexagonal through hole 10 in conjunction with the wrench, which facilitates the assembly and removal of the cyclone 9. The frustum section 12 is sealed and riveted with a connector 13. The frustum section 12 is sealed and riveted with the connector 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, prevent the inclined hole 3 and the swirl hole 4 from dripping, and improve the atomization effect. The cyclone 9 is provided with a swirl chamber 14, a guide groove 15, and a missing surface 1 6 and injection hole 17, the swirl chamber 14 is cylindrical in shape, the swirl chamber 14 is used to guide the liquid to rotate, the notch 16 and the inner wall of the inner nozzle 2 form a liquid phase diversion channel 18, the swirl chamber 14 is connected to the liquid phase diversion channel 18 through the injection hole 17, and the liquid enters the inner nozzle 2 through the liquid phase channel 6 during the atomization process, is diverted and guided into the liquid phase diversion channel 18 through the guide groove 15, and then is injected into the swirl chamber 14 through the injection hole 17. The injection hole 17 is arranged along the tangent of the inner wall of the swirl chamber 14. The injected liquid is guided to rotate at high speed through the inner wall of the swirl chamber 14 and then ejected to the outside through the nozzle 7 to improve the atomization effect. The number of inclined holes 3 and swirl holes 4 is equal, and the number of inclined holes 3 and swirl holes 4 is the same, so that the inclined holes 3 and swirl holes 4 can correspond one to one, improving The gas-liquid external mixing effect, the inclined hole 3 is inclined toward the nozzle hole 7. During the external mixing process of the utility model, 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. The gas phase channel 5 sprays a high-speed airflow through the inclined hole 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 re-broken, thereby improving the liquid atomization effect and further improving the gas-liquid mixing effect. After the first shear, the high-speed airflow sprayed from the inclined hole 3 and the atomized liquid still have impact force, and continue to impact and inject into the interior of the atomized liquid that is diffused in a cone shape, and shear the internal atomized liquid for a second time.The atomized liquid is subjected to a secondary impact shattering, causing the atomized liquid particles to be broken up again, further improving the liquid atomization effect and 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 this high-speed airflow is along the tangent line of the outer nozzle and sprayed downward. This high-speed airflow impacts and shatters the periphery of the atomized liquid that has spread in a cone shape, and shears the atomized liquid for a third time, causing the atomized liquid to be broken up again three times, further improving the gas-liquid mixing effect. At the same time, the high-speed airflow ejected from the swirl hole 4 causes the atomized liquid to rotate, and under the action of centrifugal force, the diffusion area after the gas-liquid mixture is increased.

[0043] The cyclone 9 of the present invention is provided with two injection holes 17 symmetrically arranged centrally. The two injection holes 17 simultaneously inject a high-speed liquid flow into the cyclone chamber 14, increasing the swirl velocity of the liquid in the cyclone chamber 14 and thereby improving the atomization effect of the liquid. The injection holes 17 are arranged along a tangent to the inner wall of the cyclone 9, which is the cylindrical sidewall of the cyclone chamber 14. When the liquid is injected into the cyclone chamber 14 through the injection holes 17, it is injected along a tangent to the cylindrical sidewall of the cyclone chamber 14. The cylindrical sidewall of the cyclone chamber 14 guides the liquid flow into rotation. At this time, the liquid flow does not perform work (circular motion) under the guidance of the cylindrical sidewall of the cyclone chamber 14, preventing the liquid from decreasing in velocity after being injected into the cyclone chamber 14 through the injection holes 17, thereby improving the atomization effect of the liquid.

[0044] 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 20 having the same conical angle as the first conical surface 19. When the cyclone 9 is assembled, the second conical surface 20 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 20 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 14 only from the injection hole 17, thereby increasing the speed of the liquid flow, increasing the rotation speed of the liquid flow in the cyclone chamber 14, and improving the atomization effect.

[0045] In actual use, the first conical surface 19 is much larger than the second conical surface 20, that is, a portion of the first conical surface 19 covers the opening of the swirl chamber 14, 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 14, 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 20 is 45°, the atomization spray effect is the best, and the atomization spray angle is about 92°.

[0046] The number of the inclined holes 3 and the spiral holes 4 of the present invention are both 6. 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 2 mm, and the diameter of the spiral holes 4 is 3 mm. This solution allows the high-speed airflow through the gas phase channel 5 to better impact the atomized liquid, 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 diffuses 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. The inclined holes 3 are 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 holes 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 the gas-liquid mixing effect.

[0047] 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.

[0048] 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 internal rotation 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 swirler is provided with a swirl chamber, a guide groove, a notch and a liquid injection hole. The notch and the inner wall of the inner nozzle form a liquid phase diversion channel. The swirl chamber is connected to the liquid phase diversion channel via the liquid injection hole. The number of the inclined holes is equal to the number of the swirl holes.

2. The internal rotation external mixing double flow high temperature atomizing nozzle according to claim 1, characterized in that: The cyclone is centrally and symmetrically provided with injection holes, and the injection holes are arranged along the tangent line of the inner wall of the cyclone chamber.

3. The internal rotation 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 internal rotation external mixing double flow high temperature atomizing nozzle according to claim 3, characterized in that: The cyclone is provided with a second conical surface having a conical angle equal to that of the first conical surface, the conical angle of the second conical surface is 45°, and the second conical surface is sealingly fitted to the first conical surface.

5. The internal rotation 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 internal rotation 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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