Nozzle assembly for reactor and reactor

Abstract

The present invention discloses a nozzle assembly for a reactor and a reactor, comprising: a nozzle body having a channel extending through both ends; a tee mounted at the outer end of the nozzle body and having a process air inlet, an outer port, and a switch port that are interconnected, the process air inlet being connected to the channel, and a control member disposed within the tee; a spray gun having an inserted state and an unplugged state, the spray gun having a mating portion that protrudes radially outward relative to the inner end of the spray gun, wherein, in the inserted state, the spray gun is inserted into the channel with the outer port spaced apart from the channel, the mating portion mating with the switch port and blocking the switch port to disconnect the outer port from the channel; and when the spray gun is unplugged, the switch port is connected and the control member blocks the outer port. The nozzle assembly for a reactor according to the present invention has rapid heat replenishment, a long service life, flexible use, energy conservation, and environmental protection.

Description

Technical Field

[0001] The present invention relates to the field of non-ferrous metal smelting and the treatment of electronic waste, hazardous waste, copper-containing sludge, nickel-containing sludge, chromium-containing sludge, petroleum catalysts, waste organic solvents, organic solvent waste, smelting tailings and other smelting technologies. Specifically, it relates to a nozzle assembly for a reactor and a reactor having the nozzle assembly for a reactor. Background Art

[0002] Reactors in related technologies, such as side-blown furnaces, blow air or oxygen-enriched air into the molten pool through tuyere nozzles arranged on both sides of the furnace body. High-speed process gas enters the molten pool through the tuyere nozzles and stirs the molten pool, accelerating the heat and mass transfer process and chemical reactions in the molten pool. For raw materials containing heat-generating elements, blowing air or oxygen-enriched air into the molten pool through the tuyere nozzles can meet the needs of smelting reactions in the side-blown furnace; for raw materials that do not contain heat-generating elements, only blowing air or oxygen-enriched air into the molten pool through the tuyere nozzles may not be able to maintain the thermal balance of the furnace body, and necessary heat supplementation measures need to be taken to maintain the thermal balance of the furnace body, especially when the furnace condition is not good, and a large amount of heat needs to be supplemented in the furnace in a short time. Using a spray gun to directly blow gas into the furnace is a quick and effective measure for heating the melt in the furnace.

[0003] However, some spray guns used in side-blown furnaces have the defect of short service life of tuyere bricks; the spray guns need to be kept open and protected by nitrogen, which increases the flue gas volume and kinetic energy consumption of the reactor; when the process parameters need to be adjusted, the spray guns are not flexible to use and are difficult to replace and maintain.

[0004] In addition, when the reactors in the related technology carry out resource recovery treatment on electronic waste, hazardous waste, copper-containing sludge, nickel-containing sludge, chromium-containing sludge, petroleum catalysts, waste organic solvents, organic solvent waste, etc., they are usually added to the reactor through the feeding port on the top of the furnace. Some raw materials may not react completely before entering the subsequent flue gas treatment system with the flue gas. For example, in a side-blown furnace, a large amount of coal is needed as fuel and reducing agent; and most of the heat-generating elements in the raw materials burn and release heat in the flue gas zone of the reactor, resulting in excessively high flue gas temperature in the reactor. At the same time, a large amount of fuel needs to be added to the reactor to maintain the thermal balance of the melt in the reactor, which is not conducive to saving energy and protecting the environment. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a nozzle assembly for a reactor, which has the advantages of rapid heat replenishment, long service life, flexible use, energy conservation, and environmental protection.

[0006] The present invention also provides a reactor having the nozzle assembly for a reactor.

[0007] According to an embodiment of the first aspect of the present invention, a nozzle assembly for a reactor includes: a nozzle body, the nozzle body having a channel running through both ends; a tee, the tee being installed at the outer end of the nozzle body and having a process air inlet, an outer port and an on-off port that are connected to each other, the process air inlet being connected to the channel, and a control member being provided in the tee; a spray gun, the spray gun having an inserted state and a pulled-out state, the spray gun being provided with a fitting portion that protrudes radially outward relative to the inner end of the spray gun, wherein the spray gun is inserted into the channel by the outer port in the inserted state and is spaced apart from the channel, the fitting portion being fitted in the on-off port and blocking the on-off port to disconnect the outer port and the channel; when the spray gun is in the pulled-out state, the on-off port is connected and the control member blocks the outer port. According to the nozzle assembly for a reactor according to an embodiment of the present invention, process air and fuel or process air and raw materials can be simultaneously blown into the reactor to supplement heat and quickly increase the temperature of the melt in the reactor, thereby reducing the amount of coal used in the reactor; the raw materials can also be fully reacted in the reactor, and the reaction heat of the raw materials in the reactor can be used to increase the melt temperature in the reactor, thereby reducing the amount of fuel input in the raw materials of the reactor; and the nozzle assembly has a long service life and is flexible to use. During production, the amount of medium blown into the reactor and the usage status can be flexibly adjusted according to process requirements.

[0008] In addition, the nozzle assembly for the reactor according to the embodiment of the present invention also has the following additional technical features:

[0009] According to some embodiments of the present invention, the spray gun includes an inner section, an outer section, and a connecting section connected between the inner section and the outer section, the radial width of the inner section is smaller than the radial width of the connecting section, and the fitting portion is formed by the connecting section.

[0010] In some embodiments of the present invention, a radial width of a portion of the connecting segment located inside the matching portion gradually decreases from outside to inside.

[0011] In some specific embodiments of the present invention, the radial width of the inner segment is smaller than the radial width of the outer segment.

[0012] According to some embodiments of the present invention, an air duct is provided in the nozzle body, and the channel is formed in the air duct.

[0013] Furthermore, the inner peripheral wall of the inner end of the air duct protrudes inwardly along the radial direction of the air duct to form a constriction.

[0014] In some embodiments of the present invention, the inner end surface of the spray gun is located outside the necking when the spray gun is in the inserted state.

[0015] According to some embodiments of the present invention, the inner end of the spray gun is a heat-resistant stainless steel pipe.

[0016] According to some embodiments of the present invention, a flow-guiding protrusion is provided on the outer peripheral wall of the inner end of the spray gun.

[0017] Furthermore, the guide protrusions are multiple and are arranged at intervals along the circumference of the spray gun.

[0018] According to some embodiments of the present invention, a clamping piece is provided on the spray gun, a clamping sleeve is provided in the outer port, and the clamping piece is connected to the clamping sleeve.

[0019] According to some embodiments of the present invention, a control channel connected to the external port is provided in the tee, and when the spray gun is inserted into the tee, the control member is pushed into the control channel, and when the spray gun is pulled out of the tee, the control member slides to the external port.

[0020] According to some embodiments of the present invention, a cooling circuit disposed adjacent to the channel is formed in the nozzle body. The cooling circuit extends in a circuitous manner along the axial direction of the channel or is defined by a cooling pipe disposed around the channel.

[0021] A reactor according to an embodiment of the second aspect of the present invention comprises: the nozzle assembly for a reactor according to the embodiment of the first aspect of the present invention; and a reaction chamber, wherein the inner end of the nozzle body is inserted into the reaction chamber and inwardly protrudes from or is flush with the inner wall of the reaction chamber.

[0022] The reactor according to the embodiment of the present invention utilizes the nozzle assembly for the reactor as described above, which has the advantages of fast heat replenishment, long service life, flexible use, energy saving and environmental protection.

[0023] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of a nozzle assembly for a reactor according to an embodiment of the present invention;

[0025] Figure 2 is a schematic structural diagram of a nozzle assembly for a reactor according to an embodiment of the present invention;

[0026] Figure 3 is a schematic structural diagram of a nozzle assembly for a reactor according to an embodiment of the present invention;

[0027] Figure 4 is a schematic structural diagram of a reactor according to an embodiment of the present invention;

[0028] Figure 5 Schematic diagram of the structure of a reactor according to an embodiment of the present invention.

[0029] Reference numerals:

[0030] Reactor 1,

[0031] Nozzle assembly 10, connector 11, for reactor

[0032] Nozzle body 100, channel 101, air duct 102, necking 103, cooling circuit 104, annular groove 105, tee 200, process air inlet 201, outer port 202, inner port 203, on-off port 204, control member 205, sleeve 206, control channel 207, spray gun 300, mating portion 301, guide protrusion 302, clamping member 303, inlet portion 304, gripping portion 305, cover 306, inner section 310, outer section 320, connecting section 330, blocking rod 400,

[0033] Reaction chamber 20 and tuyere copper water jacket 21. DETAILED DESCRIPTION

[0034] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0035] A nozzle assembly 10 for a reactor according to an embodiment of a first aspect of the present invention will be described below with reference to the accompanying drawings. The nozzle assembly 10 for a reactor is suitable for installation at the process air and combustible gas blast inlet of a smelting reactor (e.g., a side-blown smelting furnace or a side-blown reduction furnace) to inject process air and combustible gas into the smelting reactor.

[0036] like Figure 1-Figure 5 As shown, a nozzle assembly 10 for a reactor according to an embodiment of the present invention includes a nozzle body 100 , a tee 200 and a spray gun 300 .

[0037] Specifically, the nozzle body 100 has a channel 101 extending through both ends. A tee 200 is mounted on the outer end of the nozzle body 100. The tee 200 includes a process air inlet 201, an outer port 202, an inner port 203, and a shutoff port 204, all of which are interconnected. The process air inlet 201 and the inner port 203 are each connected to the channel 101. The shutoff port 204 is located between the outer port 202 and the inner port 203. A control member 205 is provided within the tee 200 and can be positioned adjacent to the outer port 202. Here, the outer end of the nozzle body 100 refers to the end of the nozzle body 100 located outside the reactor.

[0038] The spray gun 300 has an inserted state and an unplugged state. The spray gun 300 is provided with a mating portion 301 that protrudes radially outward from the inner end of the spray gun 300. In the inserted state, the spray gun 300 is inserted into the channel 101 via the outer port 202, the on / off port 204, and the inner port 203, in sequence. The spray gun 300 is spaced apart from the channel 101. The mating portion 301 fits within the on / off port 204 and blocks the on / off port 204, disconnecting the outer port 202 from the channel 101. This not only helps limit the position of the spray gun 300, but also helps prevent process air in the tee 200 from flowing toward the outer end, thereby improving the sealing effect. In the unplugged state, the on / off port 204 is conductive and the control member 205 blocks the outer port 202.

[0039] The following describes in detail the use process of the nozzle assembly 10 for a reactor according to an embodiment of the present invention.

[0040] like Figure 1 and Figure 4 As shown, the spray gun 300 is in the inserted state. At this time, the process air inlet 201 is connected to the inlet portion 304, and process air (such as air or oxygen-enriched air) and fuel gas (such as natural gas or coal gas, etc.) or process air (such as air or oxygen-enriched air) and raw materials (such as crushed electronic waste, dried copper-containing, nickel-containing, chromium-containing sludge, petroleum catalyst, waste organic solvent and organic solvent waste, etc.) can be simultaneously blown into the reactor through the nozzle assembly 10 for the reactor. Figure 1 As shown, when the spray gun 300 is inserted into the channel 101, external fuel gas or raw materials enter the spray gun 300 through the inlet 304, and process air enters the gap between the channel 101 and the spray gun 300 through the process air inlet 201 and the inner port 203. Then, the process air and fuel gas (or raw materials) are blown into the reactor together through the outlet of the channel 101.

[0041] like Figure 2 As shown, the spray gun 300 is removed. At this point, process air (e.g., air or oxygen-enriched air) can be separately blown into the reactor via the reactor nozzle assembly 10. When blowing process air into the reactor, the spray gun 300 is not required. The control member 205 (e.g., a sealing steel ball) in the tee 200 is in the sealed position, disconnecting the external port 202. After passing through the process air inlet 201, the process air is blown into the reactor via the channel 101.

[0042] like Figure 3As shown, when it is necessary to stop blowing the medium (i.e., process air, fuel gas (or raw material)) into the reactor, the blocking bar 400 can be inserted into the channel 101. During the production process of the reactor, when the blocking bar 400 is inserted into the channel 101, the external process air at the process air inlet 201 in the tee 200 should be immediately closed.

[0043] Thus, according to the nozzle assembly 10 for a reactor according to an embodiment of the present invention, process air and fuel, or process air and raw materials, can be directly blown into the reactor simultaneously. By directly blowing process air and fuel into the reactor, the melt in the reactor can be supplemented with heat and quickly raised in temperature, thereby improving the thermal efficiency of the fuel in the reactor, reducing the amount of coal used in the reactor, or even eliminating coal, thereby using clean energy and benefiting environmental protection. By directly blowing process air and raw materials into the reactor, raw materials (crushed electronic scrap, dried copper-, nickel-, or chromium-containing sludge, petroleum catalysts, waste organic solvents, organic solvent waste, etc.) can be directly blown into the molten pool in the reactor for reaction, allowing the raw materials to fully react in the reactor. At the same time, the reaction heat of the raw materials in the reactor can be used to increase the melt temperature in the reactor, thereby reducing the amount of fuel input into the reactor raw materials, which is beneficial to energy conservation and environmental protection. In addition, the nozzle assembly 10 has a long service life and flexible use. During production, the amount of medium blown into the reactor and the usage status (for example, open or close) can be flexibly adjusted according to process requirements.

[0044] According to some embodiments of the present invention, Figure 1 As shown, the spray gun 300 includes an inner section 310, an outer section 320, and a connecting section 330 connecting the inner section 310 and the outer section 320. The radial width of the inner section 310 is smaller than the radial width of the connecting section 330, and the fitting portion 301 is formed by the connecting section 330. Thus, the inner section 310 can be inserted into the channel 101 and spaced apart from the channel 101. The fitting portion 301 and the on-off opening 204 engage to stop the connecting section 330 at the on-off opening 204.

[0045] In some embodiments of the present invention, Figure 1 As shown, the radial width of the portion of the connecting section 330 located inside the matching portion 301 gradually decreases from the outside to the inside, thereby facilitating the insertion and removal of the connecting section 330 .

[0046] In some specific embodiments of the present invention, Figure 1 As shown, the radial width of the inner section 310 is smaller than the radial width of the outer section 320. In this way, the spray gun 300 can be assembled together by two tube guns with different outer diameters through the connecting section 330, thereby facilitating molding and use.

[0047] According to some embodiments of the present invention, Figure 1-Figure 5As shown, the nozzle body 100 is provided with an air duct 102, and a channel 101 is formed in the air duct 102. For example, the air duct 102 can be a wear-resistant steel pipe, which is helpful in resisting the erosion of the nozzle body 100 by high-speed gas and extending the service life of the nozzle body 100.

[0048] Furthermore, if Figure 1-Figure 5 As shown, the inner peripheral wall of the inner end of the air duct 102 protrudes inward along the radial direction of the air duct 102 to form a constriction 103, which is convenient for inserting the spray gun 300, opening the air port and blocking the air port. Especially when blocking the air port, it can avoid inserting the blocking rod 400 into the melt or blocking it in place.

[0049] In some embodiments of the present invention, Figure 1 As shown, when the spray gun 300 is in the inserted state, the inner end surface of the spray gun 300 is located outside the constriction 103 , thereby preventing the spray gun 300 from being burned by the melt.

[0050] According to some embodiments of the present invention, the inner end of the spray gun 300 may be a heat-resistant stainless steel pipe, thereby extending the service life.

[0051] According to some embodiments of the present invention, Figure 1 As shown, the outer peripheral wall of the inner end of the spray gun 300 is provided with a flow-guiding protrusion 302, which is beneficial to the flow of fluid and has a better heat supplement effect.

[0052] Furthermore, if Figure 1 As shown, there may be a plurality of guide protrusions 302 , which are spaced apart along the circumference of the spray gun 300 , thereby achieving a better guide effect.

[0053] According to some embodiments of the present invention, a flow guide or nozzle may be provided inside the inner end of the spray gun 300 (i.e., the medium ejection port area) according to the different media sprayed into the reactor by the spray gun 300, thereby facilitating fluid flow and achieving a better heat supplement effect.

[0054] According to some embodiments of the present invention, Figure 1 As shown, a clamping member 303 is mounted on the spray gun 300, and a clamping sleeve 206 is mounted inside the outer port 202. The clamping member 303 is connected to the clamping sleeve 206, thereby fixing the spray gun 300 and the tee 200 together and sealing the outer end surface of the tee 200. The mating portion 301 cooperates with the on-off port 204 to improve the sealing effect of the clamping member 303.

[0055] According to some embodiments of the present invention, Figure 1 and Figure 2As shown, the tee 200 has a control channel 207 in communication with the external port 202. When the spray gun 300 is inserted into the tee 200, the control member 205 is pushed into the control channel 207. When the spray gun 300 is removed from the tee 200, the control member 205 slides toward the external port 202. In this way, the control member 205 can be used to conveniently control the opening and closing of the external port 202. For example, the control channel 207 extends from the outside to the inside, tilting away from the external port 202, so that the control member 205 can fall back to the external port 202 under the action of gravity.

[0056] According to some embodiments of the present invention, Figure 1 As shown, a cooling circuit 104 is formed within the nozzle body 100, adjacent to the channel 101. The cooling circuit 104 is defined by a cooling pipe disposed around the channel 101. The inner end surface of the nozzle body 100 directly contacts the high-temperature melt in the reactor. Cooling water is passed through the cooling pipe to cool the nozzle body 100. For example, if the nozzle body 100 is made of copper, the cooling pipe may be a copper tube. Of course, the cooling circuit 104 may also extend in a circuitous manner along the axial direction of the channel 101. For example, the cooling circuit 104 may be defined by a cooling groove within the nozzle body 100.

[0057] In some embodiments of the present invention, Figure 1 As shown, the inner end surface of the nozzle body 100 may also be provided with an annular groove 105, which is conducive to the splashing melt adhering to the inner end surface of the nozzle body 100 and forming a stable slag skin, thereby extending the service life of the nozzle body 100 and ensuring safe use.

[0058] In some specific embodiments of the present invention, Figure 1 As shown, the outer end of the spray gun 300 includes an inlet portion 304 and a grip portion 305. The outer end of the inlet portion 304 is connected to an external flexible gas pipeline or a flexible raw material pipeline, and the inner end of the grip portion 305 is connected to the inner end of the inlet portion 304. The outer end of the grip portion 305 is sealed by a sealing cover 306, thereby facilitating the operation of the spray gun 300.

[0059] The reactor 1 according to the second embodiment of the present invention comprises: the nozzle assembly 10 for the reactor according to the first embodiment of the present invention and a reaction chamber 20. The inner end of the nozzle body 100 is inserted into the reaction chamber 20 and extends inwardly beyond or flush with the inner wall of the reaction chamber 20.

[0060] According to the reactor 1 of the embodiment of the present invention, using the nozzle assembly 10 for the reactor as described above, process air (air or oxygen-enriched air) and fuel gas (natural gas or coal gas, etc.) or process air (air or oxygen-enriched air) and raw materials (crushed electronic scrap, dried copper-containing, nickel-containing, chromium-containing sludge, petroleum catalyst, waste organic solvent, organic solvent waste, etc.) can be blown into the reactor 1 at the same time; process air can also be blown in alone to supplement heat and quickly raise the temperature of the melt in the reactor 1, thereby reducing the amount of coal used in the reactor 1; the raw materials can also be fully reacted in the reactor 1, and the reaction heat of the raw materials in the reactor 1 can be used to increase the melt temperature in the reactor 1, thereby reducing the amount of fuel input in the raw materials of the reactor 1; at the same time, in production, the amount and usage status of the media blown into each nozzle assembly 10 for the reactor in the reactor 1 can be flexibly adjusted according to process requirements, and it is safe to use and has a long service life.

[0061] The reactor 1 according to a specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0062] In this embodiment, the reactor 1 is a side-blown furnace. Several nozzle assemblies 10 for the reactor are disposed at the copper water jacket 21 of the first layer of the side-blown furnace's tuyere. The nozzle body 100 is mounted together with the copper water jacket 21 of the first layer of the side-blown furnace's tuyere and is also mounted together with the tee 200 via a connector 11. The inner end face of the nozzle body 100 contacts the high-temperature melt in the side-blown furnace, and oxygen-enriched air and natural gas are simultaneously blown into the side-blown furnace via the tee 200 and the spray gun 300. After the nozzle assembly 10 for the reactor is installed on the side-blown furnace, before the side-blown furnace is heated, cooling circulating water must be introduced into the cooling pipe, and the flow rate and pressure of the cooling circulating water must meet process requirements.

[0063] During normal production of the side-blown furnace, oxygen-enriched air and natural gas enter and are blown into the side-blown furnace through the tee 200 and the lance 300 in the nozzle assembly 10 for the reactor at different positions in the side-blown furnace according to process requirements.

[0064] When oxygen-enriched air is blown into the side-blown furnace alone, the nozzle assembly 10 for the reactor does not need to be inserted with the spray gun 300 and the blocking rod 400; when there is no need to blow gas into the side-blown furnace, the nozzle assembly 10 for the reactor is blocked with the blocking rod 400; when the nozzle assembly 10 for the reactor blows oxygen-enriched air and natural gas into the side-blown furnace, the spray gun 300 needs to be inserted.

[0065] When the nozzle assembly 10 for the reactor in use needs to be replaced or stopped due to process requirements, before closing the oxygen-enriched air in the nozzle assembly 10 for the reactor, if the nozzle assembly 10 for the reactor has been inserted with the spray gun 300, it is necessary to first close the external gas valve, quickly pull out the spray gun 300, and then quickly insert the blocking rod 400 into the channel 101. After the operation of the blocking rod 400 is completed, the oxygen-enriched air in the nozzle assembly 10 for the reactor is closed.

[0066] It can be understood that the present invention only uses process air and fuel gas as examples to illustrate the use of the nozzle assembly 10 for the reactor, and this should not be understood as a limitation of the present invention. The nozzle assembly 10 for the reactor can also be used to introduce solid fuel or liquid fuel such as pulverized coal into the reactor 1.

[0067] Other structures and operations of the reactor 1 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0068] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0069] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0070] In the description of the present invention, "a first feature" or "a second feature" may include one or more such features. A first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may also include the first and second features being in contact not directly but through another feature therebetween. A first feature being "above," "above," or "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is at a higher level than the second feature.

[0071] It should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0072] Throughout this specification, references to terms such as "one embodiment," "some embodiments," "specific embodiments," "example," or "some examples" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0073] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A nozzle assembly for a reactor, characterized in that include: a nozzle body having passages extending through both ends; A tee, which is installed at the outer end of the nozzle body and has a process air inlet, an external port and a shut-off port that are connected to each other, the process air inlet is connected to the channel, and a control member is provided in the tee; A spray gun having an inserted state and an extracted state, wherein the spray gun is provided with a mating portion protruding radially outward relative to an inner end of the spray gun, wherein The spray gun is inserted into the channel with the external port in the inserted state and is spaced apart from the channel, and the fitting portion fits into the on-off opening and blocks the on-off opening to disconnect the external port and the channel; When the spray gun is in the pulled-out state, the on-off port is connected and the control member blocks the external port; the spray gun comprises an inner section, an outer section, and a connecting section connected between the inner section and the outer section, the radial width of the inner section is smaller than the radial width of the connecting section, and the mating portion is formed by the connecting section; An air duct is provided in the nozzle body, and the channel is formed in the air duct.

2. The nozzle assembly for a reactor according to claim 1, characterized in that The radial width of the portion of the connecting section located inside the matching portion gradually decreases from outside to inside.

3. The nozzle assembly for a reactor according to claim 1, wherein The radial width of the inner segment is smaller than the radial width of the outer segment.

4. The nozzle assembly for a reactor according to claim 1, wherein The inner peripheral wall of the inner end of the air duct protrudes inwardly along the radial direction of the air duct to form a constriction.

5. The nozzle assembly for a reactor according to claim 4, characterized in that In the inserted state, the inner end surface of the spray gun is located outside the necking.

6. The nozzle assembly for a reactor according to claim 1, wherein The inner end of the spray gun is a heat-resistant stainless steel pipe.

7. The nozzle assembly for a reactor according to claim 1, wherein The outer peripheral wall of the inner end of the spray gun is provided with a flow guide protrusion.

8. The nozzle assembly for a reactor according to claim 7, characterized in that There are multiple flow-guiding protrusions, which are arranged at intervals along the circumference of the spray gun.

9. The nozzle assembly for a reactor according to any one of claims 1 to 8, characterized in that: A clamping piece is provided on the spray gun, a clamping sleeve is provided in the outer port, and the clamping piece is connected to the clamping sleeve.

10. The nozzle assembly for a reactor according to any one of claims 1 to 8, characterized in that: A control channel communicating with the external port is provided in the tee. When the spray gun is inserted into the tee, the control member is pushed into the control channel. When the spray gun is pulled out of the tee, the control member slides to the external port.

11. The nozzle assembly for a reactor according to any one of claims 1 to 8, characterized in that: A cooling circuit is formed in the nozzle body and is arranged adjacent to the channel. The cooling circuit extends in a circuitous manner along the axial direction of the channel or is defined by a cooling pipe arranged around the channel.

12. A reactor, characterized in that include: The nozzle assembly for a reactor according to any one of claims 1 to 11; The inner end of the nozzle body is inserted into the reaction chamber and inwardly exceeds or is flush with the inner wall of the reaction chamber.

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