CN111515041A - Gasifying agent and water mixed atomizing nozzle and atomizing method thereof - Google Patents
Gasifying agent and water mixed atomizing nozzle and atomizing method thereof Download PDFInfo
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- CN111515041A CN111515041A CN202010199019.9A CN202010199019A CN111515041A CN 111515041 A CN111515041 A CN 111515041A CN 202010199019 A CN202010199019 A CN 202010199019A CN 111515041 A CN111515041 A CN 111515041A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/295—Gasification of minerals, e.g. for producing mixtures of combustible gases
Abstract
The invention discloses a gasification agent and water mixed atomizing nozzle and an atomizing method thereof, wherein the nozzle comprises a nozzle body with a central through hole, a central spray pipe is arranged in the central through hole, the tail end of the central spray pipe is contracted into a conical nozzle, an annular gap channel is arranged between the nozzle body and the central spray pipe and surrounds the outside of the central spray pipe, a guide sleeve is connected with the tail end of the annular gap channel, and a mixing chamber is connected with the tail end of the guide sleeve. According to the gasification agent and water mixed atomizing nozzle and the atomizing method thereof, the specific surface area of liquid drops is increased by enhancing the water atomizing effect, the phase interface area of heat transfer and mass transfer with coal is increased, and the combustion and gasification reaction efficiency is improved; because the gasification agent and the atomized water are simultaneously sprayed into the working surface of the coal bed for combustion and gasification reaction, the direct contact reaction with the working surface of the gasification is realized, the water injection amount is reduced, and the heat efficiency is improved.
Description
Technical Field
The invention relates to the technical field of underground coal gasification, in particular to a gasification agent and water mixed atomizing nozzle and an atomizing method thereof.
Background
Underground coal gasificationThe method is a process for producing synthesis gas (or fuel gas) by directly injecting a gasifying agent into an underground coal bed to carry out combustion and gasification reactions, and the quality of the coal gas is mainly influenced by the distribution mode of the gasifying agent, the oxygen concentration and the components of the gasifying agent. From a reaction process perspective, underground coal gasification is similar to ground fixed bed gasification, such as lurgi furnaces. However, unlike the ground lurgi furnace, a pure oxygen-steam gasification process is generally adopted, the temperature in the furnace is adjusted by controlling the steam content, and the ash fusion state is controlled to ensure solid-state slag discharge. In the underground coal gasification process, water vapor is generally difficult to directly convey to the underground, and the conveyed steam has no technical economy due to the fact that the steam is easy to condense and the steam has large heat loss caused by phase state conversion. Although water can be used for replacing water vapor, if water is directly injected into an underground coal seam, the mass transfer and heat transfer effects of the direct reaction of the water vapor and coal are often not as good as those of the direct reaction of the water vapor and the coal, because the water needs to absorb heat and evaporate into the water vapor in the gasification reaction process, and the heat efficiency of the whole gasification process is determined by the quality of the evaporation process; in addition, the water consumption of gasification reaction only accounts for a small part of the actually fed water, most of the water is excessive, and how to directly act the water on the reaction (combustion and gasification) working surface is to determine the quality of the coal gas (adjust H)2CO content). Therefore, the water quantity and the water supply mode on the reaction working surface are accurately controlled, and the quality of the gasification effect is directly determined.
Disclosure of Invention
The invention aims at the problems, and provides a nozzle for mixing and atomizing water and a gasifying agent and an atomizing method thereof, wherein the water and the gasifying agent are respectively accelerated to a strong turbulent flow state through the nozzle and a rotational flow device arranged on the nozzle, the water flow is torn and broken into fine liquid drops at a nozzle under the action of strong shearing force, then the water drops in the high-speed turbulent flow state are directly sprayed into the gasifying agent which is also accelerated to the high-speed turbulent flow state, the liquid drops and the gasifying agent are impacted and further atomized into fine water mist which is suspended in the gasifying agent, so that the uniform mixing and atomization of the water and the gasifying agent are completed in the nozzle, the specific surface area of the liquid drops is increased by enhancing the water atomization effect, the phase interface area of heat transfer and mass transfer with coal is increased, and the combustion and gasification reaction efficiency is improved; because the gasification agent and the atomized water are simultaneously sprayed into the working surface of the coal bed for combustion and gasification reaction, the direct contact reaction with the working surface of the gasification is realized, the water injection amount is reduced, and the heat efficiency is improved. The anti-backfire guide sleeve is arranged, so that the gasification agent with high-speed turbulence can be prevented from flowing back, and the nozzle can be ablated and damaged early.
In order to achieve the above purpose, the invention provides the following technical scheme:
a gasification agent and water mixing atomization nozzle, comprising:
a nozzle body having a central through hole and a nozzle outlet at a distal end of the central through hole;
a central nozzle tube disposed within the central through bore of the nozzle body and coaxial with the nozzle body; the tail end of the central spray pipe is contracted into a conical shape and faces the spray opening of the spray nozzle outlet, and the wall thicknesses of the inner pipe wall and the outer pipe wall of the central spray pipe at the spray opening are close to each other to form a relatively sharp edge;
an annular gap channel disposed between the nozzle body and the central spout and surrounding the central spout; the tail end of the annular space channel inclines towards the axis direction of the nozzle, and the outer wall of the annular space channel moves forwards for a certain distance relative to the nozzle of the central spray pipe; the outer wall of the annular space channel inclines towards the axis of the flow direction;
the guide sleeve is connected with the tail end of the annular space channel; the outer wall of the guide sleeve is parallel to the axis of the nozzle;
the mixing chamber is connected with the tail end of the guide sleeve; the mixing chamber is formed by obliquely extending the tail end of the outer wall of the guide sleeve to the direction far away from the axis of the nozzle, and the inner diameter of the mixing chamber is gradually enlarged to the outlet of the nozzle along the flowing direction.
Preferably, swirl members are provided in the central nozzle and the annular passage, respectively, both swirl members being provided on the rear side of the nozzle on the central nozzle, said swirl members having a plurality of open passages distributed around them and the open passages being inclined tangentially to the direction of fluid flow.
Preferably, the swirl member in the central nozzle has a central bore.
Preferably, the distance between the rotational flow component and the upper nozzle opening of the central nozzle is 0.1-10 times of the outer diameter of the central nozzle.
Preferably, the distance between the outer wall of the annular space channel and the nozzle of the central spray pipe is 0.1-10 times of the inner diameter of the central spray pipe;
or
The distance between the outer wall of the annular space channel and the nozzle of the central spray pipe is 1.5 to 2.5 times of the outer diameter of the rotational flow part in the central spray pipe.
Preferably, the rotational directions of the generated rotational flows of the swirling members to the respective fluids may be the same or opposite.
Preferably, the two streams in the annular passage and the central nozzle are mixed at a fixed angle, typically with a flow velocity differential of no less than 10%.
Preferably, a guide vane is arranged in the annular gap passage and is arranged at the rear end of the nozzle of the central spray pipe.
Preferably, one end of the central spray pipe is provided with an inlet pipe connected with a gasification agent or water; and one end of the annular space channel is provided with an inlet pipe connected with water or a gasifying agent.
The atomization method of the atomization nozzle for mixing the gasification agent and the water comprises the following steps:
feeding a gasifying agent into the central spray pipe to form a high-speed gas rotational flow which is sprayed out from the spray nozzle at a high speed; water is fed into the annular space channel, then water drops in a high-speed turbulent flow state are directly sprayed into the gasifying agent accelerated to the high-speed turbulent flow state at the nozzle, the water drops and the gasifying agent are impacted and further atomized into fine water mist, the fine water mist is suspended in the gasifying agent, the uniform mixing and atomization of the water and the gasifying agent are completed in the mixing chamber through the guide sleeve, and then the fine water mist is sprayed out from the nozzle outlet.
The invention provides a gasification agent and water mixed atomization nozzle and an atomization method thereof.A nozzle and a rotational flow device arranged on the nozzle are used for accelerating water and a gasification agent to a strong turbulent flow state respectively, wherein the water flow is torn and broken into fine liquid drops at a nozzle under the action of strong shearing force, and then the water drops in a high-speed turbulent flow state are directly sprayed into the gasification agent which is also accelerated to the high-speed turbulent flow state, the liquid drops and the gasification agent are impacted and further atomized into fine water mist which is suspended in the gasification agent, so that the uniform mixing and atomization of the water and the gasification agent are completed in the nozzle, the specific surface area of the liquid drops is increased by enhancing the water atomization effect, the heat transfer and mass transfer phase interface area with coal is increased, and the combustion and gasification reaction efficiency is improved; because the gasification agent and the atomized water are simultaneously sprayed into the working surface of the coal bed for combustion and gasification reaction, the direct contact reaction with the working surface of the gasification is realized, the water injection amount is reduced, and the heat efficiency is improved. The anti-backfire guide sleeve is arranged, so that the gasification agent with high-speed turbulence can be prevented from flowing back, and the nozzle can be ablated and damaged early.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a structural diagram of an atomizing nozzle for mixing an agent with water according to an embodiment of the present invention.
Description of reference numerals:
1. a nozzle body; 2. a central nozzle; 3. an annular gap channel; 4. a central nozzle spout; 5. a nozzle outlet; 6. the distance between the outer wall of the annular space channel and the nozzle of the central spray pipe; 7. a nozzle spread angle; 8. a guide sleeve; 9. a mixing chamber; 10. a swirl member; 11. a swirl member; 12. a swirl component open passage; 13. a central hole of the rotational flow part; 14. a guide vane.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrases "comprising … …" or "comprising … …" does not exclude the presence of additional elements in a process, method, article, or terminal that comprises the element. Further, herein, "greater than," "less than," "more than," and the like are understood to exclude the present numbers; the terms "above", "below", "within" and the like are to be understood as including the number.
As shown in fig. 1, a nozzle for atomizing a mixture of a gasifying agent and water, comprising:
a nozzle body 1 having a central through hole and a nozzle outlet 5 at the end of the central through hole;
a central nozzle 2 disposed in the central through hole of the nozzle body 1 and coaxial with the nozzle body 1; the tail end of the central spray pipe 2 is contracted into a conical shape and faces a spray opening 4 of the spray nozzle outlet 5, and the thicknesses of the inner pipe wall and the outer pipe wall of the central spray pipe 2 are close to each other at the spray opening 4 to form a relatively sharp edge;
an annular channel 3 arranged between said nozzle body 1 and the central lance 2 and surrounding the outside of the central lance 2; the tail end of the annular space channel 3 inclines towards the axis direction of the nozzle, and the outer wall of the annular space channel 3 moves forwards for a distance 6 relative to the nozzle opening 4 of the central spray pipe 2; the outer wall of the annular space channel 3 inclines towards the axis of the flow direction;
the guide sleeve 8 is connected with the tail end of the annular space channel 3; the outer wall of the guide sleeve 8 is parallel to the axis of the nozzle;
a mixing chamber 9 connected with the tail end of the guide sleeve 8; the mixing chamber 9 is formed by the tail end of the outer wall of the guide sleeve 8 extending towards the direction away from the axis of the nozzle in an inclined mode, and the inner diameter of the mixing chamber 9 is gradually enlarged to the nozzle outlet 5 along the flowing direction.
Specifically, the gasifying agent and water mixed atomizing nozzle has a nozzle body 1 with a central through hole, and the tail end of the central through hole is a nozzle outlet 5. The central spout 2 is disposed within the central through bore of the nozzle body 1. The central spray pipe 2 is coaxial with the nozzle body 1, the tail end of the central spray pipe 2 is contracted into a conical spray opening 4, and the thicknesses of the inner pipe wall and the outer pipe wall of the central spray pipe 2 at the spray opening 4 are close to each other to form a relatively sharp edge. Since the nozzle damage is mainly caused by the back flow of the hot gas after the reaction. This return flow is mainly present at the spout 4 of the central nozzle 2. The nozzle 4 is processed into a relatively sharp edge, so that the mixed fluid can be separated from the nozzle in an inherent way after being mixed, and the mixed fluid cannot be caused to swirl or turbulent flow, and then the mixed fluid can be caused to flow back.
An annular gap channel 3 is arranged between the nozzle body 1 and the central lance 2 and surrounds the outside of the central lance 2. The end of the annular gap channel 3 is inclined towards the direction of the nozzle axis and the outer wall of the annular gap channel 3 (i.e. the inner wall of the nozzle body) is advanced a distance 6 relative to the nozzle orifice 4 of the central nozzle tube 2 to reduce the effect of the radiant heat on the nozzle orifice 4 of the central nozzle tube. The outer wall of the annular space channel 3 is inclined towards the axis of the flowing direction, so that the fluid in the annular space channel 3 can be mixed with the fluid from the central spray pipe 2 at a fixed angle, and the intensity of mixed atomization is improved. Since the outer wall of the annular space channel 3 is far away from the central nozzle orifice 4, the diffusion angle 7 of the central nozzle 2 is reduced, namely the area exposed to high temperature is reduced, so that the influence of heat radiation on the central nozzle 2 can be reduced.
The guide sleeve 8 is connected with the tail end of the annular space channel 3, and the outer wall of the guide sleeve 8 is parallel to the axis of the nozzle. The two flows in the annular channel 3 and the central nozzle 2 are mixed at a fixed angle, and the mixed flow in the annular channel is diffused by the flow in the central nozzle 2. Because the fluid in the annulus channel flows first in the direction of the nozzle axis and then away from the direction of the nozzle axis, the direction of flow changes too quickly and vortices are created that cause backflow. Therefore, by arranging the guide sleeve 8, the flow direction of the fluid in the annular space channel can be slowly changed, namely the flow direction of the fluid is changed from the original direction to the axial direction of the nozzle and then to the axial direction of the parallel nozzle to be only separated from the axial direction of the parallel nozzle, so that the backflow of hot air flow caused by the generation of vortex and turbulence at the nozzle opening 4 of the central spray pipe 2 is prevented.
The mixing chamber 9 is connected to the end of the guide sleeve 8. The mixing chamber 9 is formed by the tail end of the outer wall of the guide sleeve 8 extending towards the direction away from the axis of the nozzle in an inclined mode, and the inner diameter of the mixing chamber 9 is gradually enlarged to the nozzle outlet 5 along the flowing direction. The fluid in the annular gap channel 3 is diffused by the fluid in the central spray pipe 2, and the fluid in the annular gap channel 3 is constrained by the shape of the annular gap channel, flows along the axis of the spray nozzle, then is sprayed out from the annular gap channel 3 at the spray nozzle 4, and enters the mixing chamber 9 after leaving from the axis of the spray nozzle to realize the mixing of the two fluids.
Since the nozzle damage is mainly caused by the back flow of the hot gas after the reaction. This recirculation zone is mainly present at the orifice 4 of the central nozzle 2. The nozzle in the embodiment can greatly reduce the danger of fluid separation of airflow at the nozzle, and the streamline cannot be separated from the nozzle, so that the vortex which causes heat to be transferred to the nozzle cannot be caused. However, the gas flow rate through the central nozzle and the annular passage changes at high speed and the vortex flow still separates. Particularly, when the flow rate of one gas is changed, harmful effects can be generated, and meanwhile, in order to improve the mixing and atomizing effects of the gasifying agent and water, swirl components 10 and 11 are respectively arranged in the central nozzle 2 and the annular space channel 3. Swirl members 10, 11 are provided on the rear side of the central nozzle orifice 4. The swirl element 10 in the central nozzle 2 has a number of open passages 12 distributed around it, the open passages 12 being inclined tangentially to the direction of fluid flow, e.g. having an axial and a tangential component. The swirl member 11 in the annular passage 3 is similarly constructed.
The open channel 12 may impart a swirling flow to the fluid, thereby improving the mixing, atomizing effect of the two fluids within the mixing chamber 9. The cyclone components 10 and 11 can be in the form of baffles, guide vanes, impellers and the like, and can be selected according to the fluid pressure drop requirement. The strength and direction of the swirl can be adjusted by changing the angle of the open channel 12 or/and the form of the swirl element. Preferably, the swirl element 10 in the central nozzle has a central hole 13, so that the streamline of the central fluid is not changed after passing through the swirl element 10, and thus the backflow of the nozzle is not caused.
Radial mass transfer is enhanced due to the swirling of the fluid, resulting in rapid mixing of the two fluids. The two rotational flows have strong interaction, so that intense and rapid mixing atomization is caused. No back flow occurs in the total jet area and the reaction gas is generally away from the central nozzle 2. Only the relatively cold, unreacted gases are in direct contact with the central nozzle, so that damage to the central nozzle 2 by convection is avoided.
Further preferably, the distance between the swirling parts 10 and 11 and the central nozzle orifice 4 is 0.1-10 times of the outer diameter of the central nozzle 2.
The two streams in the annular passage 3 and the central nozzle 2 are mixed at a fixed angle, and in order to improve the mixing and atomization effect of the two streams, it is preferable that the difference between the flow rates of the two streams is generally not less than 10%.
Vortices are still generated due to the large velocity difference between the two flows. Thus, the guide vane 14 is provided to stabilize the flow. Guide vanes 14 are provided at the rear end of the central nozzle orifice 4. At least on one of the streams.
Preferably, guide vanes 14 are provided in the annular channel 3 to stabilize the fluid flow. The guide vanes 14 are arranged away from the nozzle opening 4 of the central nozzle 2. The guide vanes 14 serve to accelerate the flow of fluid through the annulus channel 3 downstream of the vanes, preventing the generation of vortices, and to prevent thermal damage as the fluid cools the vanes.
Further preferably, the distance 6 between the outer wall of the annular space channel 3 (i.e. the inner wall of the nozzle body) and the nozzle orifice 4 of the central nozzle is generally 0.1-10 times the inner diameter of the central nozzle 2. Or the distance 6 between the outer wall of the annular space channel 3 (namely the inner wall of the nozzle body) and the nozzle 4 of the central spray pipe is 1.5-2.5 times of the outer diameter of the rotational flow component 10 in the central spray pipe.
The rotational directions of the generated rotational flows of the swirl members 10, 11 to the respective fluids may be identical or opposite. When the rotational flow directions are consistent, the two flows are mixed violently, and the jet flow area is widened; when the swirling directions are opposite, the swirling strength of the two flows is weakened, and the width of a jet flow area is narrowed. Preferably, the two flows adopt the same rotational flow direction to enhance the mixing and atomizing effect.
In a further improvement, one end of the central spray pipe 2 is provided with an inlet pipe connected with a gasification agent or water; one end of the annular space channel 3 is provided with an inlet pipe connected with water or gasifying agent. The gasifying agent can be air or oxygen-rich gas with oxygen content more than 21% or pure oxygen with oxygen content more than 99%, and can be determined according to the requirements of gas-making process. The water may be recycled water or sewage or brackish water.
The atomization method of the atomization nozzle for mixing the gasification agent and the water comprises the following steps: the gasification agent enters the central spray pipe 2 from the inlet pipe, and forms a high-speed gas rotational flow after being accelerated by the rotational flow component 10, and the gas rotational flow is sprayed out from the nozzle 4 at a high speed; water enters the annular space channel 3 from an inlet pipe, is torn and broken into fine liquid drops after being accelerated by the rotational flow component 11, then the water drops in a high-speed turbulent flow state are directly sprayed into the gasifying agent which is also accelerated to the high-speed turbulent flow state at the nozzle 4, the liquid drops and the gasifying agent are impacted and further atomized into fine water mist which is suspended in the gasifying agent, the uniform mixing and atomization of the water and the gasifying agent are completed in the mixing chamber 9 through the guide sleeve 8, and then the fine water mist is sprayed out from the nozzle outlet 5. The gasifying agent mixed with the fine water mist is sprayed into the working surface of the coal bed for combustion and gasification reaction, and the direct contact reaction with the working surface is realized due to the increased water phase interface, so that the effect similar to steam can be achieved.
The water and the gasifying agent are accelerated to a strong turbulent flow state through the nozzle and the rotational flow device arranged on the nozzle, wherein the water flow is torn and broken into fine liquid drops at the nozzle under the action of strong shearing force, then the water drops in a high-speed turbulent flow state are directly sprayed into the gasifying agent which is also accelerated to the high-speed turbulent flow state, the liquid drops and the gasifying agent are impacted and further atomized into fine water mist which is suspended in the gasifying agent, so that the uniform mixing and atomization of the water and the gasifying agent are finished in the nozzle, the specific surface area of the liquid drops is increased by enhancing the water atomization effect, the phase interface area of heat transfer and mass transfer with coal is increased, and the combustion and gasification reaction efficiency is improved; because the gasification agent and the atomized water are simultaneously sprayed into the working surface of the coal bed for combustion and gasification reaction, the direct contact reaction with the working surface of the gasification is realized, the water injection amount is reduced, and the heat efficiency is improved. The anti-backfire guide sleeve is arranged, so that the gasification agent with high-speed turbulence can be prevented from flowing back, and the nozzle can be ablated and damaged early.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (10)
1. A gasification agent and water mixing atomizing nozzle is characterized by comprising:
a nozzle body having a central through hole and a nozzle outlet at a distal end of the central through hole;
a central nozzle tube disposed within the central through bore of the nozzle body and coaxial with the nozzle body; the tail end of the central spray pipe is contracted into a conical shape and faces the spray opening of the spray nozzle outlet, and the wall thicknesses of the inner pipe wall and the outer pipe wall of the central spray pipe at the spray opening are close to each other to form a relatively sharp edge;
an annular gap channel disposed between the nozzle body and the central spout and surrounding the central spout; the tail end of the annular space channel inclines towards the axis direction of the nozzle, and the outer wall of the annular space channel moves forwards for a certain distance relative to the nozzle of the central spray pipe; the outer wall of the annular space channel inclines towards the axis of the flow direction;
the guide sleeve is connected with the tail end of the annular space channel; the outer wall of the guide sleeve is parallel to the axis of the nozzle;
the mixing chamber is connected with the tail end of the guide sleeve; the mixing chamber is formed by obliquely extending the tail end of the outer wall of the guide sleeve to the direction far away from the axis of the nozzle, and the inner diameter of the mixing chamber is gradually enlarged to the outlet of the nozzle along the flowing direction.
2. The atomizing nozzle for mixing gasification agent and water according to claim 1, wherein a swirling member is provided in each of the central nozzle and the annular space passage, both swirling members being provided at the rear side of the upper nozzle opening of the central nozzle, said swirling member having a plurality of opening passages distributed therearound and inclined tangentially to the flow direction of the fluid.
3. The gasification agent and water mixing atomizing nozzle of claim 2, wherein the swirl element within the central nozzle tube has a central bore.
4. The atomizing nozzle for mixing gasification agent and water according to claim 3, wherein the distance between the swirling flow member and the nozzle opening of the central nozzle tube is 0.1 to 10 times the outer diameter of the central nozzle tube.
5. The atomizing nozzle for mixing gasification agent and water according to claim 2, characterized in that:
the distance between the outer wall of the annular space channel and the nozzle of the central spray pipe is 0.1-10 times of the inner diameter of the central spray pipe;
or
The distance between the outer wall of the annular space channel and the nozzle of the central spray pipe is 1.5 to 2.5 times of the outer diameter of the rotational flow part in the central spray pipe.
6. The atomizing nozzle for mixing gasification agent and water according to claim 2, wherein the rotational directions of the swirling flows generated by the swirling flow elements for the respective fluids may be the same or opposite.
7. The gasification agent and water mixing atomizing nozzle of claim 1 wherein the two streams in the annular space passage and the central nozzle are mixed at a fixed angle, the difference in flow rates between the two streams being generally not less than 10%.
8. The atomizing nozzle for mixing gasification agent and water according to claim 1, wherein a guide vane is provided in the annular space passage, and the guide vane is provided at the rear end of the nozzle opening of the central nozzle.
9. The atomizing nozzle for mixing gasification agent and water as set forth in claim 1, wherein an inlet pipe connected to the gasification agent or water is provided at one end of said central nozzle; and one end of the annular space channel is provided with an inlet pipe connected with water or a gasifying agent.
10. The atomizing nozzle for mixing the gasifying agent and the water according to any one of claims 1 to 9, wherein the atomizing method comprises the following steps:
feeding a gasifying agent into the central spray pipe to form a high-speed gas rotational flow which is sprayed out from the spray nozzle at a high speed; water is fed into the annular space channel, then water drops in a high-speed turbulent flow state are directly sprayed into the gasifying agent accelerated to the high-speed turbulent flow state at the nozzle, the water drops and the gasifying agent are impacted and further atomized into fine water mist, the fine water mist is suspended in the gasifying agent, the uniform mixing and atomization of the water and the gasifying agent are completed in the mixing chamber through the guide sleeve, and then the fine water mist is sprayed out from the nozzle outlet.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113680544A (en) * | 2021-08-30 | 2021-11-23 | 浙江工业大学 | Noise reduction nozzle adjusted by adopting sliding structure |
| CN116921091A (en) * | 2023-09-18 | 2023-10-24 | 国检测试控股集团辽宁有限公司 | Atomizer |
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| US1513624A (en) * | 1920-06-03 | 1924-10-28 | Spray Engineering Co | Plural-fluid nozzle and method of liquid distribution |
| CN2341721Y (en) * | 1998-07-17 | 1999-10-06 | 覃洪波 | Pneumatic atomizing fuel nozzle |
| JP2011050841A (en) * | 2009-09-01 | 2011-03-17 | Hellen Enterprise Co Ltd | Two-fluid nozzle |
| CN201711239U (en) * | 2010-04-23 | 2011-01-19 | 常州世方国际贸易有限公司 | Atomizing sprayer |
| CN201807473U (en) * | 2010-07-09 | 2011-04-27 | 中冶京诚工程技术有限公司 | Novel aerosol nozzle without air resistance |
| CN102019242A (en) * | 2010-11-01 | 2011-04-20 | 哈尔滨工程大学 | Double-inlet atomizing spray head for making snow |
| CN203291984U (en) * | 2013-06-19 | 2013-11-20 | 山东润银生物化工股份有限公司 | Two-in-one nozzle |
| CN203678558U (en) * | 2013-12-12 | 2014-07-02 | 天长市华润清洗科技有限公司 | Whirl-type cavitating spray head |
| CN110449282A (en) * | 2019-08-14 | 2019-11-15 | 溧阳市盛杰机械有限公司 | A kind of injection apparatus for being surface-treated or painting |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113680544A (en) * | 2021-08-30 | 2021-11-23 | 浙江工业大学 | Noise reduction nozzle adjusted by adopting sliding structure |
| CN116921091A (en) * | 2023-09-18 | 2023-10-24 | 国检测试控股集团辽宁有限公司 | Atomizer |
| CN116921091B (en) * | 2023-09-18 | 2023-12-05 | 国检测试控股集团辽宁有限公司 | Atomizer |
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Application publication date: 20200811 |