CN118253258A - Swirl air unit combined atomized flame synthesis burner - Google Patents
Swirl air unit combined atomized flame synthesis burner Download PDFInfo
- Publication number
- CN118253258A CN118253258A CN202410299721.0A CN202410299721A CN118253258A CN 118253258 A CN118253258 A CN 118253258A CN 202410299721 A CN202410299721 A CN 202410299721A CN 118253258 A CN118253258 A CN 118253258A
- Authority
- CN
- China
- Prior art keywords
- air
- fuel gas
- movable
- steady flow
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 30
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 26
- 239000002737 fuel gas Substances 0.000 claims abstract description 117
- 238000009826 distribution Methods 0.000 claims abstract description 53
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000011858 nanopowder Substances 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 24
- 230000002194 synthesizing effect Effects 0.000 claims description 15
- 238000000889 atomisation Methods 0.000 claims description 11
- 239000002243 precursor Substances 0.000 claims description 11
- 239000012705 liquid precursor Substances 0.000 claims description 10
- 230000000087 stabilizing effect Effects 0.000 claims description 10
- 230000033228 biological regulation Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 5
- 238000010008 shearing Methods 0.000 claims description 5
- 238000009827 uniform distribution Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 238000011049 filling Methods 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
Abstract
The invention discloses a cyclone air unit combined type atomized flame synthesis burner, which comprises a movable cyclone body, a fixed cyclone body, an atomizing nozzle and an airflow distribution pipe system: the movable cyclone body comprises a movable steady flow cavity, a movable tangential channel, an airflow hole, an inner annular sheet, a movable jet unit, an outer annular sheet and a guide airflow pipe; the fixed cyclone body comprises a sealing boss, a sealing ring, a fixed steady flow cavity, a fixed tangential channel, a disk-shaped body, an air inflow pipe, a fuel gas inflow pipe and an outer ring channel; the air flow distribution pipe system comprises a fuel gas inlet pipe, a fuel gas branch pipe, a fuel gas distribution cavity, an air inlet pipe, an air distribution cavity and an air branch pipe. The cyclone air unit combined type atomized flame synthesis burner disclosed by the invention can flexibly regulate and control the action areas of the rotating air flow and the combustion-supporting air flow along the axial position of the atomized flame, thereby improving the quality and the performance of the finally obtained nano powder material.
Description
Technical Field
The invention belongs to the technical field of nanometer powder material preparation by adopting a rotational flow atomization flame synthesis method, and particularly relates to a rotational flow air unit combined atomization flame synthesis burner.
Background
In the process for preparing the nano powder material by adopting an atomization flame synthesis technology, core equipment is an atomization flame synthesis combustor. In an atomizing flame synthesizing burner, an atomizing nozzle for atomizing a liquid precursor into fine mist droplets is generally provided at the center of the burner. Outside the center fog drop, air flow and combustion-supporting gas which rotate at high speed are uniformly arranged along the circumferential direction, and two important roles can be generated around the precursor atomized liquid drop: 1) The method can construct a high-temperature environment around the central atomized precursor, promote the precursor fog drops to generate rapid physical and chemical reaction processes, and promote the generation of nano-particles; 2) Through constructing high-speed rotatory air current and combustion-supporting air current, can be at the flame root, construct the inside low pressure district of being located high-speed rotatory air current, the existence of this low pressure district will be favorable to the high temperature flue gas that produces around the entrainment to the root of central atomizing air current, forms high temperature flue gas backward flow district, is favorable to stabilizing atomizing flame. Therefore, the high-speed rotating air flow and the combustion air flow which are arranged around have important roles in the construction of a high-temperature zone and the improvement of flame stability, but also show a certain problem, mainly expressed in that:
The annular rotating air flow and the combustion-supporting air flow with the conventional structures are mainly arranged at the spraying position close to the atomizing nozzle, so that the actions of the annular rotating air flow and the combustion-supporting air flow are mainly concentrated at the root part of the atomized flame (shown in fig. 1), and in practice, the atomized flame is sprayed along the center of the burner and has a certain axial length, so that the rotating air flow and the combustion-supporting air flow mainly act on the bottom area of the atomized synthetic flame, the overall action effect of the overall atomized flame cannot be achieved, and the performance of the synthesized nano powder material is restricted to a certain extent.
Thus, with respect to the above-mentioned problems, further improvements are made,
Disclosure of Invention
The invention mainly aims to provide a cyclone air unit combined type atomized flame synthesis burner, which can flexibly regulate and control the action areas of rotary air flow and combustion-supporting air flow along the axial position of atomized flame so as to improve the quality and performance of finally obtained nano powder materials.
In order to achieve the above purpose, the invention provides a cyclone wind unit combined type atomized flame synthesis burner, comprising a movable cyclone body, a fixed cyclone body, an atomizing nozzle and an airflow distribution pipe system, wherein:
The shearing air flow and the liquid precursor are respectively introduced into the atomizing nozzle, and an atomizing air flow of the precursor is formed in the upper area of the nozzle of the atomizing nozzle;
The air flow enters from the air flow distribution pipe system, and after the air flow stabilization and uniform distribution, the air flow sequentially passes through the fixed swirling body and the movable swirling body, and finally is ejected along the tangential direction at high speed after the air flow guiding function; the fuel gas flow enters from the gas flow distribution pipe system, and sequentially passes through the fixed swirling body and the movable swirling body after the fuel gas flow is stabilized and uniformly distributed, and finally is sprayed out along the tangential direction at high speed after the gas flow is guided; thereby constructing a (two-layer) fuel and air high-speed rotating flow along the vertical direction around the atomizing nozzle, and matching with the precursor atomizing jet flow positioned in the central area for promoting the formation of a high-temperature area and a backflow area;
According to the actual regulation and control requirement in the atomization flame synthesis process, the movable cyclone body is subjected to position regulation, so that the action areas of the rotating air flow and the combustion-supporting fuel gas flow are subjected to targeted regulation along the axial position of the atomization flame, and the quality and the performance of the finally obtained nano powder material are improved.
As a further preferable technical scheme of the above technical scheme, the stationary cyclone body comprises a sealing boss, a sealing ring, a stationary flow stabilizing cavity, a stationary tangential channel, a disk-shaped body, an air inflow pipe, a fuel gas inflow pipe and an outer ring channel, wherein:
the disc-shaped body is of a solid disc-shaped structure and is formed by coaxially and fixedly connecting a circular ring body positioned at the upper part and a circular plate positioned at the lower part; a round hole is formed in the central area of the circular plate at the lower part of the disc-shaped body and used for installing and fixing the atomizing nozzle; a plurality of independent fixed steady flow cavities are uniformly and adjacently arranged in the upper annular body of the disc-shaped body along the circumferential direction respectively; the section of the fixed steady flow cavity along the vertical direction is fan-shaped; the outer ring channel is arranged at the lower part of each fixed steady flow cavity along the vertical direction with the lower wall surface of each fixed steady flow cavity; the outer ring channel penetrates through the disc-shaped body and is communicated with the fixed steady flow cavity; the number of the outer ring channels is the same as that of the fixed steady flow cavities; the air inflow pipe and the fuel gas inflow pipe are all of circular pipe structures; the number of the air inflow pipes is a plurality of the fuel gas inflow pipes; the plurality of air inflow pipes and the plurality of fuel gas inflow pipes are arranged at intervals adjacent to each other in the circumferential direction; each air inflow pipe and each fuel gas inflow pipe are respectively connected and communicated with the outer ring channel corresponding to the position of each air inflow pipe along the axial direction.
As a further preferable technical scheme of the technical scheme, the sealing boss is arranged inside the upper wall surface of each fixed steady flow cavity, and protrudes out of the upper wall surface of the fixed steady flow cavity by a certain height; a circular section channel is formed in the central area of the sealing boss, so that the guiding of the guiding airflow pipe can be realized; an annular groove is formed in the inner wall of the sealing boss along the circumferential direction and used for filling the sealing ring, so that the sealing effect on air flow and liquid flow can be realized; the fixed tangential channels are formed on a side wall surface of each fixed steady flow cavity, which is close to the atomizing nozzle; the section of the fixed tangential channel is rectangular, and the long side direction of the rectangular section is consistent with the central axis direction of the disc-shaped body; the arrangement direction of the fixed tangential channels is a certain included angle with the tangential direction of the inner wall surface of the middle and upper annular body of the disc-shaped body.
As a further preferable technical scheme of the above technical scheme, the movable cyclone body comprises a movable steady flow cavity, a movable tangential channel, an airflow hole, an inner annular sheet, a movable jet unit, an outer annular sheet and a guiding airflow pipe, wherein:
The internal overall structure size of the movable steady flow cavity is consistent with that of the fixed steady flow cavity; the number of the movable steady flow cavities is multiple, and each movable steady flow cavity is an independent block body with a fan-shaped section; each movable steady flow cavity has the same structure and size, is closely and uniformly arranged along the circumferential direction, and corresponds to the fixed steady flow cavity one by one along the vertical direction.
As a further preferable technical scheme of the technical scheme, the movable tangential channels are formed on a side wall surface of each movable steady flow cavity, which is close to the atomizing nozzle; the section of the movable tangential channel is rectangular, and the long side direction of the rectangular section is consistent with the central axis direction of the disc-shaped body; the arrangement direction of the movable tangential channels is a certain included angle with the tangential direction of the inner wall surface of the upper ring body in the disc-shaped body, and the arrangement position of each movable tangential channel along the vertical direction corresponds to the arrangement position of the fixed tangential channel one by one; the lower wall surface of each movable steady flow cavity is vertically connected and communicated with the guide airflow pipe; the guide airflow pipe is of an elongated circular pipe-shaped structure; each of the guide gas flow pipes can extend into the air inflow pipe or the fuel gas inflow pipe through the sealing boss corresponding to the position thereof.
As a further preferable technical scheme of the technical scheme, the plurality of movable steady flow cavities can be divided into a plurality of fuel gas movable steady flow cavities and a plurality of air movable steady flow cavities according to different circulating airflow types; in the plurality of movable steady flow cavities, when the guide airflow pipe connected and communicated with each movable steady flow cavity stretches into the air inflow pipe, the corresponding movable steady flow cavity is an air movable steady flow cavity; in the plurality of movable steady flow cavities, when the guide airflow pipe connected and communicated with each movable steady flow cavity stretches into the fuel gas inflow pipe, the corresponding movable steady flow cavity is a fuel gas movable steady flow cavity.
As a further preferable technical scheme of the technical scheme, the inner annular sheets are fixedly connected to the wall surfaces of the fuel gas moving steady flow cavities, which are close to the atomizing nozzle, so that the fuel gas moving steady flow cavities are uniformly fixedly connected to the outer side wall surfaces of the inner annular sheets along the circumferential direction of the inner annular sheets; the wall surface of the inner ring piece is provided with a plurality of air flow holes along the circumferential direction, the section of each air flow hole is rectangular, and the position of each air flow hole corresponds to the outlet position of each movable tangential channel; the length and width of the section of the airflow hole are slightly larger than those of the movable tangential passage.
As a further preferable technical scheme of the above technical scheme, the outer ring piece is fixedly connected to a wall surface of the plurality of air moving steady flow cavities, which is far away from the atomizing nozzle, so that the plurality of air moving steady flow cavities are uniformly fixedly connected to the inner side wall surface of the outer ring piece along the circumferential direction of the outer ring piece.
As a further preferable aspect of the above technical aspect, the air flow distribution piping includes a fuel gas inlet pipe, a fuel gas branch pipe, a fuel gas distribution chamber, an air inlet pipe, an air distribution chamber, and an air branch pipe, wherein:
The fuel gas distribution cavity is of a hollow cylinder structure with a smaller length-diameter ratio; the fuel gas branch pipes are of circular pipe-shaped structures, and the number of the fuel gas branch pipes is multiple; the fuel gas branch pipes are fixedly connected and communicated with the fuel gas distribution cavity in a radial direction along the circumferential direction; one end of each fuel gas branch pipe, which is not connected with the fuel gas distribution cavity, is respectively connected and communicated with the plurality of fuel gas inflow pipes which are sequentially arranged at intervals at a vertical angle; the fuel gas inlet pipe is connected and communicated with the central area of the upper wall surface of the fuel gas distribution cavity; the fuel gas inlet pipe is used for circulating fuel gas, and the fuel gas can be methane, hydrogen and other types of combustible gas.
As a further preferable technical scheme of the technical scheme, the air distribution cavity is a hollow cylinder structure with a smaller length-diameter ratio; the air branch pipes are of circular pipe-shaped structures, and the number of the air branch pipes is multiple; the air branch pipes are fixedly connected and communicated with the air distribution cavity in a radial direction along the circumferential direction; one end of each air branch pipe, which is not connected with the air distribution cavity, is respectively connected and communicated with the air inflow pipes which are sequentially arranged at intervals at a vertical angle; the air inlet pipe is connected and communicated with the central area of the lower wall surface of the air distribution cavity; the air inlet tube is for circulating an air flow.
The beneficial effects of the invention are as follows:
(1) According to the cyclone air unit combined type atomized flame synthesis combustor, the action areas of the rotating air flow and the combustion-supporting air flow can be adjusted in a targeted mode along the axial position of atomized flame, and therefore the quality and the performance of finally obtained nano powder materials are improved;
(2) The whole structure is compact in design, the position of the movable cyclone body along the axial direction of the flame can be flexibly regulated and controlled according to the synthesis working condition of the actual nano powder material, and the online flexible regulation and control capability of the flame for synthesizing the nano powder material is improved.
Drawings
Fig. 1 is a schematic diagram of a typical conventional atomizing flame synthesizing burner.
FIG. 2 is a side view of a swirl air unit combined atomizing flame synthesizing burner of the present invention.
FIG. 3 is a top view of a swirl air unit combined atomizing flame synthesizing burner of the present invention.
FIG. 4 is a cross-sectional view of section A-A of the swirl air unit combined atomizing flame synthesizing burner of the present invention.
FIG. 5 is a cross-sectional view of a B-B section of a swirl air unit combined atomizing flame synthesizing burner of the present invention.
FIG. 6 is a cross-sectional C-C view of a swirl air unit combined atomizing flame synthesizing burner of the present invention.
FIG. 7 is a side view of a fuel gas moving steady flow chamber and an air moving steady flow chamber of a swirl air unit combined atomizing flame synthesizing burner of the present invention at different heights.
FIG. 8 is an axial cross-sectional view of a fuel gas moving plenum and an air moving plenum of a swirl air unit combined atomizing flame synthesizing burner of the present invention at different elevations.
FIG. 9 is an axial cross-sectional view of a fuel gas moving plenum and an air moving plenum of a swirl air unit combined atomizing flame synthesizing burner of the present invention at the same elevation.
FIG. 10 is a D-D cross-sectional view of a swirl air unit combined atomizing flame synthesizing burner of the present invention.
FIG. 11 is an E-E cross-sectional view of a swirl air unit combined atomizing flame synthesizing burner of the present invention.
FIG. 12 is a schematic flow diagram of the airflow of the swirl air unit combined atomizing flame synthesizing burner of the present invention.
The reference numerals include: 1-mobile cyclone; 11-moving the steady flow cavity; 12-moving tangential channels; 13-airflow holes; 14-inner ring piece; 15-a mobile jet unit; 16-an outer ring piece; 17-a pilot gas flow tube; 2-stationary cyclone; 21-sealing boss; 22-sealing rings; 23-fixing the steady flow cavity; 24-stationary tangential channels; 25-a disk-shaped body; 26-an air inflow tube; 27-a fuel gas inflow pipe; 28-an outer ring channel; 3-atomizing spray heads; 4-gas flow distribution piping; 41-a fuel gas inlet pipe; 42-fuel gas branch pipes; 43-fuel gas distribution chamber; 44-an air inlet tube; 45-an air distribution chamber; 46-air branch.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
In preferred embodiments of the present invention, it should be noted by those skilled in the art that the sheared gas stream and liquid precursor, etc. to which the present invention relates may be considered prior art.
Preferred embodiments.
As shown in fig. 2 to 12, the invention discloses a swirl air unit combined type atomized flame synthesis burner, which comprises a movable swirl body (1), a fixed swirl body (2), an atomizing nozzle (3) and an airflow distribution pipe system (4), wherein:
the shearing airflow and the liquid precursor are respectively introduced into the atomizing nozzle (3) and an atomizing airflow of the precursor is formed at the upper area of the nozzle of the atomizing nozzle (3);
The air flow enters from the air flow distribution pipe system (4) and sequentially passes through the fixed cyclone body (2) and the movable cyclone body (1) after the air flow is stabilized and uniformly distributed, and finally the air flow is sprayed out along the tangential direction at high speed after the air flow is guided; the fuel gas flow enters from the gas flow distribution pipe system (4) and sequentially passes through the fixed cyclone body (2) and the movable cyclone body (1) after being subjected to the steady flow and uniform distribution of the fuel gas, and finally is sprayed out along the tangential direction at high speed after the gas flow is guided; thereby, a (two-layer) fuel and air high-speed rotating flow along the vertical direction is constructed around the atomizing nozzle (3), and is matched with the precursor atomizing jet flow positioned in the central area for promoting the formation of a high-temperature area and a backflow area;
According to the actual regulation and control demand in the atomization flame synthesis process, the movable cyclone body (1) is subjected to position regulation, so that the action areas of the rotating air flow and the combustion-supporting fuel gas flow are pertinently regulated along the axial position of the atomization flame, and the movable cyclone body is further used for improving the quality and the performance of finally obtained nano powder materials.
Specifically, as shown in fig. 2, the stationary swirl body (2) includes a sealing boss (21), a sealing ring (22), a stationary flow stabilizing cavity (23), a stationary tangential channel (24), a disk-shaped body (25), an air inflow pipe (26), a fuel gas inflow pipe (27) and an outer ring channel (28), wherein:
the disc-shaped body (25) is of a solid disc-shaped structure, and the disc-shaped body (25) is formed by coaxially and fixedly connecting a circular ring body positioned at the upper part and a circular plate positioned at the lower part; a round hole is formed in the central area of the lower circular plate of the disc-shaped body (25) and is used for installing and fixing the atomizing nozzle (3); 8 independent fixed steady flow cavities (23) are uniformly and adjacently arranged in the upper annular body of the disc-shaped body (25) along the circumferential direction respectively; the section of the fixed steady flow cavity (23) along the vertical direction is fan-shaped;
As shown in fig. 2,5 and6, the outer ring channel (28) is formed at the lower part of each fixed steady flow cavity (23) along the vertical direction with the lower wall surface of each fixed steady flow cavity (23); the outer ring channel (28) penetrates through the disc-shaped body (25) and is communicated with the fixed steady flow cavity (23); the number of the outer ring channels (28) is the same as that of the fixed steady flow cavities (23); the air inflow pipe (26) and the fuel gas inflow pipe (27) are all of circular pipe structures; the number of the air inflow pipes (26) is 4, and the number of the fuel gas inflow pipes (27) is 4; the 4 air inflow pipes (26) and the 4 fuel gas inflow pipes (27) are arranged at adjacent intervals in the circumferential direction; each of the air inflow pipes (26) and the fuel gas inflow pipes (27) is connected and communicated with the outer ring passage (28) corresponding to the position thereof in the axial direction.
More specifically, as shown in fig. 2, inside the upper wall surface of each stationary flow stabilizing cavity (23), the sealing boss (21) is provided, and the sealing boss (21) protrudes from the upper wall surface of the stationary flow stabilizing cavity (23) by a certain height; a circular section channel is formed in the central area of the sealing boss (21), so that the guiding of the guiding airflow pipe (17) can be realized; an annular groove is formed in the inner wall of the sealing boss (21) along the circumferential direction and used for filling the sealing ring (22), so that the sealing effect on gas flow and liquid flow can be realized;
As shown in fig. 10 and 11, the fixed tangential channels (24) are formed on a side wall surface of each fixed steady flow cavity (23) close to the atomizing nozzle (3); the section of the fixed tangential channel (24) is rectangular, and the long side direction of the rectangular section is consistent with the central axis direction of the disc-shaped body (25); the arrangement direction of the fixed tangential channels (24) is a certain included angle with the tangential direction of the inner wall surface of the upper ring body in the disc-shaped body (25).
Further, as shown in fig. 2 and 3, the movable cyclone body (1) includes a movable steady flow cavity (11), a movable tangential channel (12), an airflow hole (13), an inner annular plate (14), a movable jet unit (15), an outer annular plate (16) and a guiding airflow pipe (17), wherein:
The internal overall structure size of the movable steady flow cavity (11) is consistent with the internal overall structure size of the fixed steady flow cavity (23); the number of the movable steady flow cavities (11) is 8, and each movable steady flow cavity (11) is an independent block body with a fan-shaped section; each movable steady flow cavity (11) has the same structure and size, each movable steady flow cavity (11) is arranged in close proximity and uniformity along the circumferential direction, and each movable steady flow cavity (11) corresponds to the fixed steady flow cavity (23) in a one-to-one mode along the vertical direction.
Further, as shown in fig. 10 and 11, the moving tangential channels (12) are formed on a side wall surface of each moving steady flow cavity (11) close to the atomizing nozzle (3); the section of the movable tangential channel (12) is rectangular, and the long side direction of the rectangular section is consistent with the central axis direction of the disc-shaped body (25); the arrangement direction of the movable tangential channels (12) is a certain included angle with the tangential direction of the inner wall surface of the upper ring body in the disc-shaped body (25), and the arrangement position of each movable tangential channel (12) along the vertical direction corresponds to the arrangement position of the fixed tangential channel (24) one by one;
As shown in fig. 4, the guide gas flow pipes (17) are vertically connected and communicated with the lower wall surface of each movable steady flow cavity (11); the guide airflow pipe (17) is of an elongated circular pipe-shaped structure; each of the guide gas flow pipes (17) is capable of penetrating through a sealing boss (21) corresponding to the position thereof and extending into the interior of the air inflow pipe (26) or the fuel gas inflow pipe (27).
Preferably, as shown in fig. 2 and 3, the 8 movable flow stabilizing chambers (11) can be divided into 4 fuel gas movable flow stabilizing chambers and 4 air movable flow stabilizing chambers according to the type of the air flowing through the movable flow stabilizing chambers; among the 8 movable steady flow cavities (11), when the guide airflow pipe (17) connected and communicated with each movable steady flow cavity (11) stretches into the air inflow pipe (26), the corresponding movable steady flow cavity (11) is an air movable steady flow cavity; in the 8 movable steady flow cavities (11), when the guide airflow pipe (17) connected and communicated with each movable steady flow cavity (11) stretches into the fuel gas inflow pipe (27), the corresponding movable steady flow cavity (11) is a fuel gas movable steady flow cavity.
Preferably, as shown in fig. 4, the wall surfaces of the 4 fuel gas moving steady flow cavities, which are adjacent to the atomizing nozzle (3), are fixedly connected with the inner annular piece (14), so that the 4 fuel gas moving steady flow cavities are uniformly and fixedly connected to the outer side wall surface of the inner annular piece (14) along the circumferential direction of the inner annular piece (14); 8 airflow holes (13) are respectively formed in the wall surface of the inner ring piece (14) along the circumferential direction, the cross section of each airflow hole (13) is rectangular, and the position of each airflow hole (13) corresponds to the outlet position of each movable tangential channel (12); the length and width of the section of the airflow hole (13) are slightly larger than those of the movable tangential passage (12).
Preferably, the wall surfaces of the 4 air moving steady flow cavities far away from the atomizing nozzle (3) are fixedly connected with the outer ring piece (16), so that the 4 air moving steady flow cavities are uniformly fixedly connected to the inner wall surface of the outer ring piece (16) along the circumferential direction of the outer ring piece (16).
As shown in fig. 3 and fig. 4, the atomizer (3) includes a liquid precursor channel and a shearing airflow channel, and is generally configured to construct a high-speed rotating jet to shear the liquid precursor located in a central area of the high-speed rotating jet, so as to achieve the effects of breaking and atomizing the liquid precursor; the atomizing nozzle (3) can be made of the atomizing nozzle products sold in the market at present, and in the patent, the structure and the type of the atomizing nozzle are not limited and protected;
Preferably, as shown in fig. 2,4 to 6, the air flow distribution piping (4) includes a fuel gas inlet pipe (41), a fuel gas branch pipe (42), a fuel gas distribution chamber (43), an air inlet pipe (44), an air distribution chamber (45) and an air branch pipe (46), wherein:
The fuel gas distribution cavity (43) is of a hollow cylinder structure with a smaller length-diameter ratio; the fuel gas branch pipes (42) are of circular pipe-shaped structures, and the number of the fuel gas branch pipes (42) is 8; the 8 fuel gas branch pipes (42) are respectively and fixedly connected and communicated with the fuel gas distribution cavity (43) along the circumferential direction in a radial direction; one end, which is not connected with the fuel gas distribution cavity (43), of the 8 fuel gas branch pipes (42) is respectively connected and communicated with 4 fuel gas inflow pipes (27) which are sequentially arranged at intervals at a vertical angle; the fuel gas inlet pipe (41) is connected and communicated with the central area of the upper wall surface of the fuel gas distribution cavity (43); the fuel gas inlet pipe (41) is used for circulating fuel gas, and the fuel gas can be combustible gas such as methane, hydrogen and the like.
Preferably, the air distribution chamber (45) is a hollow cylindrical structure with a small aspect ratio; the air branch pipes (46) are of circular pipe-shaped structures, and the number of the air branch pipes (46) is 8; the 8 air branch pipes (46) are fixedly connected and communicated with the air distribution cavity (45) along the circumferential direction in a radial direction respectively; one end, which is not connected with the air distribution cavity (45), of the 8 air branch pipes (46) is respectively connected and communicated with the 4 air inflow pipes (26) which are sequentially arranged at intervals at a vertical angle; the air inlet pipe (44) is connected and communicated with the central area of the lower wall surface of the air distribution cavity (45); the air inlet duct (44) is for circulating an air flow.
The principle of the invention is as follows:
In the working process of the cyclone air unit combined type atomized flame synthesis burner, the shearing air flow and the liquid precursor are respectively introduced into the atomizing nozzle (3), and the atomized air flow of the precursor is formed in the upper area of the nozzle of the atomizing nozzle (3). Air flows into the air distribution cavity (45) through the air inlet pipe (44), under the effect of steady flow and uniform distribution of the air in the air distribution cavity (45), the air is divided into 4 air branches (46) and flows into the air inflow pipes (26), at the moment, the air flow is divided into two flows in the inner part of each air inflow pipe (26), one air flow flows into the guide air flow pipe (17) positioned in the central area, and the other air flow flows into the outer ring channel (28) positioned in the outer side area of the guide air flow pipe (17). Then, the air flow in the guiding airflow pipe (17) flows into the air moving steady flow cavity in the moving steady flow cavity (11), and is further sprayed out along the tangential direction after the air flow guiding action of the moving tangential channel (12); the air flow in the outer ring channel (28) flows into the fixed steady flow cavity (23), and is further sprayed out along the tangential direction by high-speed jet after the air flow guiding function of the fixed tangential channel (24); the fuel gas flows into the fuel gas distribution cavity (43) through the fuel gas inlet pipe (41), under the steady flow and uniform distribution of the fuel gas by the fuel gas distribution cavity (43), the fuel gas is divided into 4 flows into 4 fuel gas branch pipes (42) respectively and then flows into the fuel gas inflow pipes (27), at the moment, the fuel gas flow is divided into two flows in each fuel gas inflow pipe (27), one fuel gas flow flows into the guide gas flow pipe (17) positioned in the central area, and the other fuel gas flow flows into the outer ring channel (28) positioned in the outer side area of the guide gas flow pipe (17). Then, the fuel gas flow in the guiding gas flow pipe (17) flows into the fuel gas moving steady flow cavity in the moving steady flow cavity (11), and is further sprayed out along the tangential direction after the gas flow guiding action of the moving tangential channel (12); the fuel gas flow in the outer ring channel (28) flows into the fixed steady flow cavity (23), and is further sprayed out along the tangential direction by the high-speed jet after the gas flow guiding function of the fixed tangential channel (24). Through the structural design and the airflow flowing structure, two layers of fuel and air high-speed rotating flows along the vertical direction can be constructed around the atomizing nozzle (3), and the two layers of fuel and air high-speed rotating flows are matched with precursor atomizing jet flow positioned in the central area, so that the formation of a high-temperature area and a backflow area is promoted, and the performance of the synthesized nano powder material is promoted by assistance.
According to the actual regulation and control requirement in the atomization flame synthesis process, the axial position of the inner ring piece (14) can be moved along the axial direction, and the inner ring piece (14) can sequentially drive the fuel gas moving steady flow cavity and the guide airflow pipe (17) in the moving steady flow cavity (11) fixedly connected with the inner ring piece to move along the axial direction. Simultaneously, the axial position of the outer ring piece (16) can be moved along the axial direction, and the outer ring piece (16) can sequentially drive the air moving steady flow cavity and the guide airflow pipe (17) in the moving steady flow cavity (11) fixedly connected with the outer ring piece to move along the axial direction. Through the position adjusting measures, the action areas of the rotating air flow and the combustion-supporting fuel gas flow can be adjusted in a targeted mode along the axial position of the atomizing flame, and therefore the quality and the performance of the finally obtained nano powder material are improved.
It should be noted that the technical features such as the shear gas flow and the liquid precursor related to the present application should be regarded as the prior art, and the specific structure, the working principle, the control manner and the spatial arrangement related to the technical features may be selected conventionally in the art, and should not be regarded as the invention point of the present application, which is not further specifically described in detail.
Modifications of the embodiments described above, or equivalents of some of the features may be made by those skilled in the art, and any modifications, equivalents, improvements or etc. within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a whirlwind unit combination formula atomizing flame synthesis combustor which characterized in that, includes portable whirl body (1), fixed whirl body (2), atomizer (3) and air current distribution piping (4), wherein:
the shearing airflow and the liquid precursor are respectively introduced into the atomizing nozzle (3) and an atomizing airflow of the precursor is formed at the upper area of the nozzle of the atomizing nozzle (3);
The air flow enters from the air flow distribution pipe system (4) and sequentially passes through the fixed cyclone body (2) and the movable cyclone body (1) after the air flow is stabilized and uniformly distributed, and finally the air flow is sprayed out along the tangential direction at high speed after the air flow is guided; the fuel gas flow enters from the gas flow distribution pipe system (4) and sequentially passes through the fixed cyclone body (2) and the movable cyclone body (1) after being subjected to the steady flow and uniform distribution of the fuel gas, and finally is sprayed out along the tangential direction at high speed after the gas flow is guided; thereby, a (two-layer) fuel and air high-speed rotating flow along the vertical direction is constructed around the atomizing nozzle (3), and is matched with the precursor atomizing jet flow positioned in the central area for promoting the formation of a high-temperature area and a backflow area;
According to the actual regulation and control demand in the atomization flame synthesis process, the movable cyclone body (1) is subjected to position regulation, so that the action areas of the rotating air flow and the combustion-supporting fuel gas flow are pertinently regulated along the axial position of the atomization flame, and the movable cyclone body is further used for improving the quality and the performance of finally obtained nano powder materials.
2. A swirl-wind unit combined atomizing flame synthesis burner according to claim 1, characterized in that the stationary swirl body (2) comprises a sealing boss (21), a sealing ring (22), a stationary flow stabilizing chamber (23), a stationary tangential channel (24), a disk-shaped body (25), an air inflow tube (26), a fuel gas inflow tube (27) and an outer annular channel (28), wherein:
The disc-shaped body (25) is of a solid disc-shaped structure, and the disc-shaped body (25) is formed by coaxially and fixedly connecting a circular ring body positioned at the upper part and a circular plate positioned at the lower part; a round hole is formed in the central area of the lower circular plate of the disc-shaped body (25) and is used for installing and fixing the atomizing nozzle (3); a plurality of independent fixed steady flow cavities (23) are respectively and uniformly arranged in the upper annular body of the disc-shaped body (25) in a neighboring manner along the circumferential direction; the section of the fixed steady flow cavity (23) along the vertical direction is fan-shaped; the lower part of each fixed steady flow cavity (23) is provided with an outer ring channel (28) along the vertical direction with the lower wall surface of each fixed steady flow cavity (23); the outer ring channel (28) penetrates through the disc-shaped body (25) and is communicated with the fixed steady flow cavity (23); the number of the outer ring channels (28) is the same as that of the fixed steady flow cavities (23); the air inflow pipe (26) and the fuel gas inflow pipe (27) are all of circular pipe structures; the number of the air inflow pipes (26) is plural, and the number of the fuel gas inflow pipes (27) is plural; the plurality of air inflow pipes (26) and the plurality of fuel gas inflow pipes (27) are arranged at regular intervals adjacent to each other in the circumferential direction; each of the air inflow pipes (26) and the fuel gas inflow pipes (27) is connected and communicated with the outer ring passage (28) corresponding to the position thereof in the axial direction.
3. The cyclone wind unit combined type atomized flame synthesis burner according to claim 2, wherein the sealing boss (21) is arranged in the upper wall surface of each fixed steady flow cavity (23), and the sealing boss (21) protrudes out of the upper wall surface of the fixed steady flow cavity (23) by a certain height; a circular section channel is formed in the central area of the sealing boss (21) and is used for guiding the guide airflow pipe (17); an annular groove is formed in the inner wall of the sealing boss (21) along the circumferential direction and used for filling the sealing ring (22) and realizing the sealing effect on gas flow and liquid flow; the fixed tangential channels (24) are formed on a side wall surface of each fixed steady flow cavity (23) close to the atomizing nozzle (3); the section of the fixed tangential channel (24) is rectangular, and the long side direction of the rectangular section is consistent with the central axis direction of the disc-shaped body (25); the arrangement direction of the fixed tangential channels (24) is a certain included angle with the tangential direction of the inner wall surface of the upper ring body in the disc-shaped body (25).
4. A swirl-wind unit combined atomizing flame synthesis burner according to claim 3, characterized in that the mobile swirl body (1) comprises a mobile steady flow chamber (11), a mobile tangential channel (12), air flow holes (13), an inner annular plate (14), a mobile jet unit (15), an outer annular plate (16) and a pilot air flow tube (17), wherein:
The internal overall structure size of the movable steady flow cavity (11) is consistent with the internal overall structure size of the fixed steady flow cavity (23); the number of the movable steady flow cavities (11) is multiple, and each movable steady flow cavity (11) is an independent block body with a fan-shaped section; each movable steady flow cavity (11) has the same structure and size, each movable steady flow cavity (11) is arranged in close proximity and uniformity along the circumferential direction, and each movable steady flow cavity (11) corresponds to the fixed steady flow cavity (23) in a one-to-one mode along the vertical direction.
5. The swirl air unit combined type atomized flame synthesis burner according to claim 4, characterized in that said movable tangential passages (12) are provided on a side wall surface of each of said movable steady flow chambers (11) close to said atomizer head (3); the section of the movable tangential channel (12) is rectangular, and the long side direction of the rectangular section is consistent with the central axis direction of the disc-shaped body (25); the arrangement direction of the movable tangential channels (12) is a certain included angle with the tangential direction of the inner wall surface of the upper ring body in the disc-shaped body (25), and the arrangement position of each movable tangential channel (12) along the vertical direction corresponds to the arrangement position of the fixed tangential channel (24) one by one; the lower wall surface of each movable steady flow cavity (11) is vertically connected and communicated with the guide airflow pipe (17); the guide airflow pipe (17) is of an elongated circular pipe-shaped structure; each of the guide gas flow pipes (17) is capable of penetrating through a sealing boss (21) corresponding to the position thereof and extending into the interior of the air inflow pipe (26) or the fuel gas inflow pipe (27).
6. A swirl air unit combined type atomized flame synthesis burner according to claim 5, characterized in that a plurality of said movable stationary flow chambers (11) are divided into a fuel gas movable stationary flow chamber and an air movable stationary flow chamber according to the type of air flow through which they circulate; in the plurality of movable steady flow cavities (11), when the guide airflow pipe (17) connected and communicated with each movable steady flow cavity (11) stretches into the air inflow pipe (26), the corresponding movable steady flow cavity (11) is an air movable steady flow cavity; in the plurality of movable steady flow cavities (11), when the guide airflow pipe (17) connected and communicated with each movable steady flow cavity (11) stretches into the fuel gas inflow pipe (27), the corresponding movable steady flow cavity (11) is a fuel gas movable steady flow cavity.
7. The cyclone air unit combined type atomized flame synthesis burner according to claim 6, wherein the inner ring piece (14) is fixedly connected to the wall surface of the fuel gas moving steady flow cavity adjacent to the atomizing nozzle (3), so that the fuel gas moving steady flow cavities are uniformly fixedly connected to the outer side wall surface of the inner ring piece (14) along the circumferential direction of the inner ring piece (14); a plurality of air flow holes (13) are respectively formed in the wall surface of the inner ring piece (14) along the circumferential direction, the cross section of each air flow hole (13) is rectangular, and the position of each air flow hole (13) corresponds to the outlet position of each movable tangential channel (12); the cross-sectional length-width dimension of the airflow hole (13) is larger than the cross-sectional length-width dimension of the movable tangential passage (12).
8. The cyclone air unit combined type atomized flame synthesis burner according to claim 7, wherein the outer ring piece (16) is fixedly connected to the wall surface of the air moving steady flow cavities, which is far away from the atomizing nozzle (3), so that the air moving steady flow cavities are uniformly fixedly connected to the inner side wall surface of the outer ring piece (16) along the circumferential direction of the outer ring piece (16).
9. A swirl-wind unit combined atomizing flame synthesis burner according to claim 8, characterized in that said air flow distribution piping (4) comprises a fuel gas inlet pipe (41), a fuel gas branch pipe (42), a fuel gas distribution chamber (43), an air inlet pipe (44), an air distribution chamber (45) and an air branch pipe (46), wherein:
The fuel gas distribution cavity (43) is of a hollow cylinder structure with a smaller length-diameter ratio; the fuel gas branch pipes (42) are of circular pipe-shaped structures, and the number of the fuel gas branch pipes (42) is multiple; the fuel gas branch pipes (42) are respectively and fixedly connected and communicated with the fuel gas distribution cavities (43) along the circumferential direction in a radial direction; one end of the plurality of fuel gas branch pipes (42) which is not connected with the fuel gas distribution cavity (43) is respectively connected and communicated with the plurality of fuel gas inflow pipes (27) which are arranged at intervals in sequence at a vertical angle; the fuel gas inlet pipe (41) is connected and communicated with the central area of the upper wall surface of the fuel gas distribution cavity (43); the fuel gas inlet pipe (41) is used for circulating fuel gas.
10. A swirl-wind unit combined atomizing flame synthesizing burner as in claim 9, characterized in that said air distribution chamber (45) is a hollow cylindrical structure having a small aspect ratio; the air branch pipes (46) are of circular pipe-shaped structures, and the number of the air branch pipes (46) is multiple; the air branch pipes (46) are fixedly connected and communicated with the air distribution cavities (45) along the circumferential direction in a radial direction respectively; one end of the air branch pipes (46) which is not connected with the air distribution cavity (45) is respectively connected and communicated with the air inflow pipes (26) which are arranged at a vertical angle in sequence at intervals; the air inlet pipe (44) is connected and communicated with the central area of the lower wall surface of the air distribution cavity (45); the air inlet duct (44) is for circulating an air flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410299721.0A CN118253258A (en) | 2024-03-15 | 2024-03-15 | Swirl air unit combined atomized flame synthesis burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410299721.0A CN118253258A (en) | 2024-03-15 | 2024-03-15 | Swirl air unit combined atomized flame synthesis burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118253258A true CN118253258A (en) | 2024-06-28 |
Family
ID=91601550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410299721.0A Pending CN118253258A (en) | 2024-03-15 | 2024-03-15 | Swirl air unit combined atomized flame synthesis burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118253258A (en) |
-
2024
- 2024-03-15 CN CN202410299721.0A patent/CN118253258A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201503015U (en) | Adjustable spiral bubble atomizer | |
| US5251823A (en) | Adjustable atomizing orifice liquid fuel burner | |
| CN1942220B (en) | Water mist generating head | |
| KR100232795B1 (en) | Improved spray nozzle design | |
| CN101435585A (en) | Gas turbine combined type fuel evaporating and atomizing combustion apparatus | |
| MX2007008241A (en) | Feed nozzle assembly and burner apparatus for gas/liquid reactions. | |
| CN103045306B (en) | Coal water slurry bubble atomizing nozzle | |
| CN109827192B (en) | Air atomizing nozzle with double oil ways and double rotational flow structures | |
| JPS5857656B2 (en) | Combustion device for gas turbine engine | |
| CN86107989A (en) | Atomizer and application thereof | |
| CN201172020Y (en) | Inner mixing type pneumatic atomizing nozzle with lengthening enlargement segment | |
| CN204017659U (en) | The ammonia water spraying device of cement decomposing furnace SNCR method denitrating system | |
| CN204644301U (en) | A kind of coal water slurry effervescent atomizer | |
| CN210875853U (en) | Nozzle combining pneumatic atomization and bubble atomization | |
| CN102659075A (en) | Load-controllable multichannel liquid fuel gasification burner | |
| CN202265546U (en) | Catalytic feeding spray nozzle | |
| CN202647752U (en) | Load-controllable multi-channel liquid fuel gasification burner | |
| CN118253258A (en) | Swirl air unit combined atomized flame synthesis burner | |
| CN103007724A (en) | Swirl type denitration ejector of circulating fluidized bed | |
| CN209744417U (en) | Air atomizing nozzle with double oil ways and double rotational flow structures | |
| CN103172085B (en) | Air flow guiding method for urea pyrolytic reaction | |
| CN210058658U (en) | Granulating nozzle | |
| CN207699533U (en) | Impacting type mixed aerosol device and combination atomization system | |
| CN213840917U (en) | Multichannel air distribution adjusting rotary kiln humidifying low-nitrogen combustor | |
| CN105214468B (en) | The ammonium hydroxide spray method and flusher of cement decomposing furnace SNCR method denitrating systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |