Nozzle assembly for a reactor and reactor

Abstract

The present invention discloses a nozzle assembly and a reactor for a reactor, comprising: a nozzle body having a channel penetrating through both ends; a tee joint installed at the outer end of the nozzle body and having a process air inlet and an outer port respectively communicating with the channel, and a control member is provided in the tee joint adjacent to the outer port; a spray gun having an inserted state and a withdrawn state, the spray gun is inserted into the channel from the outer port in the inserted state and the control member is allowed to block the outer port in the withdrawn state, a self-damaging member is provided at the inner end of the spray gun, and the self-damaging member has a blocking state and a conducting state, the self-damaging member blocks the inner end of the spray gun in the blocking state and conducts the inner end of the spray gun in the conducting state. According to the nozzle assembly for a reactor of the present invention, fuel can be selectively directly blown into the reactor, and it has a long service life and flexible use. During production, according to process requirements, the medium and use state blown into the reactor can be flexibly adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of non-ferrous metal smelting and the treatment of electronic waste, hazardous waste, copper-containing sludge, nickel-containing sludge, chromium-containing sludge, smelting slag, etc. Specifically, the present invention relates to a nozzle assembly for a reactor and a reactor having the nozzle assembly for a reactor. Background Art

[0002] In the reactors in the related art, such as side-blown furnaces, air or oxygen-enriched air is blown into the molten bath through tuyeres arranged on both sides of the furnace body. The high-speed process gas enters the molten bath through the tuyeres and stirs the molten bath, accelerating the heat and mass transfer process and chemical reactions in the molten bath. For raw materials containing heat-generating elements, blowing air or oxygen-enriched air into the molten bath through the tuyeres can meet the requirements of the smelting reaction in the side-blown furnace; for raw materials without heat-generating elements, only blowing air or oxygen-enriched air into the molten bath through the tuyeres may not be able to maintain the thermal balance of the furnace body, and necessary heat supplement means need to be taken to maintain the thermal balance of the furnace body. Especially when the furnace condition is not good, a large amount of heat needs to be supplemented into the furnace in a short time. Using a lance to directly blow fuel gas into the furnace is a quick and effective measure for heat supplementing the molten body in the furnace.

[0003] However, some lances used on side-blown furnaces have the defect of relatively short service life of the tuyere bricks; the lance needs to be always open and protected by nitrogen, increasing the flue gas volume and kinetic energy consumption of the reactor; when the process parameters need to be adjusted, the lance is not flexible to use, and it is difficult to replace and repair. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a nozzle assembly for a reactor, and the nozzle assembly for a reactor has the advantages of rapid heat supplement, long service life, flexible use, etc.

[0005] The present invention also provides a reactor having the nozzle assembly for a reactor.

[0006] According to an embodiment of the first aspect of the present invention, the nozzle assembly for a reactor includes: a nozzle body having a channel penetrating through both ends; a tee installed at an outer end of the nozzle body and having a process air inlet and an outer port respectively communicating with the channel, and a control member is arranged in the tee adjacent to the outer port; a lance having an inserted state and a pulled-out state, the lance is inserted into the channel from the outer port in the inserted state and the control member is allowed to block the outer port in the pulled-out state, a self-damaging member is arranged at an inner end of the lance, and the self-damaging member has a blocking state and a conducting state, and the self-damaging member blocks the inner end of the lance in the blocking state and conducts the inner end of the lance in the conducting state.

[0007] According to an embodiment of the present invention, a nozzle assembly for a reactor can selectively inject fuel directly into the reactor to supplement heat and rapidly increase the temperature of the melt in the reactor; moreover, it has a long service life and is flexible in use. During production, according to process requirements, the medium injected into the reactor and the usage state can be flexibly adjusted.

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

[0009] According to some embodiments of the present invention, the self-destructive part is configured as a fusible part or a flammable part.

[0010] According to some embodiments of the present invention, the outer peripheral wall of the inner end of the spray gun protrudes radially outward along the spray gun to form a mating part, and in the inserted state, the mating part fits against the wall surface of the channel.

[0011] Furthermore, an air duct is provided inside the nozzle body, and the channel is formed inside the air duct.

[0012] In some embodiments of the present invention, the inner peripheral wall of the inner end of the air duct protrudes radially inward along the air duct to form a constriction, and in the inserted state, the mating part fits against the constriction.

[0013] In some specific embodiments of the present invention, the shape of the self-destructive part is adapted to the shape of the constriction, and the self-destructive part is spaced apart from the constriction.

[0014] Furthermore, the radial width of the mating part gradually increases and then gradually decreases inward along the axial direction of the spray gun.

[0015] According to some embodiments of the present invention, in the inserted state of the spray gun and in the blocked state of the self-destructive part, the self-destructive part protrudes inward beyond the inner end face of the nozzle body.

[0016] According to some embodiments of the present invention, the inner end of the spray gun is a heat-resistant stainless steel pipe fitting.

[0017] According to some embodiments of the present invention, a flow guide or a nozzle is provided inside the inner end of the spray gun.

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

[0019] According to some embodiments of the present invention, a control channel communicating with the outer port is provided inside the tee. 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 outer port and seals the outer port.

[0020] According to some embodiments of the present invention, a cooling circuit is formed in the nozzle body adjacent to the channel, and the cooling circuit extends circuitously 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 includes: a nozzle assembly for a reactor according to an embodiment of the first aspect of the present invention; a reaction chamber, and an inner end of the nozzle body is inserted into the reaction chamber and extends inwardly beyond or flush with the inner wall of the reaction chamber.

[0022] The reactor according to an embodiment of the present invention utilizes the nozzle assembly for a reactor as described above, and has the advantages of rapid heat compensation, long service life, and flexible use.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0028] Figure 5 FIG. is a schematic structural view of a reactor according to an embodiment of the present invention;

[0029] Figure 6 FIG. is a schematic structural view of a reactor according to an embodiment of the present invention.

[0030] Reference Numerals:

[0031] Reactor 1,

[0032] Nozzle assembly 10 for a reactor, connecting member 11,

[0033] Nozzle body 100, channel 101, air duct 102, neck-down 103, cooling circuit 104, annular groove 105, tee 200, process air inlet 201, outer port 202, control member 203, ferrule 204, control channel 205, spray gun 300, self-destructive member 301, mating portion 302, clamping member 303, fuel gas inlet 304, gripping portion 305, cap 306, plug rod 400, reaction chamber 20, tuyere copper water jacket 21. Detailed implementation manner

[0034] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0035] The nozzle assembly 10 for a reactor according to an embodiment of the first aspect of the present invention will be described below with reference to the drawings. The nozzle assembly 10 for a reactor is adapted to be installed at the blowing inlet of process air or combustible gas of a smelting reactor (such as a side-blown smelting furnace or a side-blown reduction furnace) for blowing process air or combustible gas into the smelting reactor.

[0036] As Figures 1-6 shown, the 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 penetrating through both ends. The tee 200 is installed at the outer end of the nozzle body 100. The tee 200 has a process air inlet 201 and an outer port 202 that are respectively communicated with the channel 101, and a control member 203 is provided in the tee 200 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. The spray gun 300 has an inserted state and a pulled-out state. The spray gun 300 is inserted into the channel 101 through the outer port 202 in the inserted state and allows the control member 203 to block the outer port 202 in the pulled-out state. A self-destructive member 301 is provided at the inner end of the spray gun 300. The self-destructive member 301 has a blocking state and a conducting state. The self-destructive member 301 blocks the inner end of the spray gun 300 in the blocking state and conducts the inner end of the spray gun 300 in the conducting state.

[0038] Among them, the self-destructive member 301 can be configured as a fusible member or a flammable member, so that the self-destructive member 301 has a certain strength and the characteristics of being easily melted or burned after being exposed to high temperature. The material of the self-destructive member 301 can be selected from low-melting-point metals (such as lead, etc.), hard plastics, wood, etc., so as to be easily damaged under the action of the melt.

[0039] The usage process of the nozzle assembly 10 for a reactor according to an embodiment of the present invention will be described in detail below.

[0040] As Figure 1 and Figure 5 shown, when the spray gun 300 is in the inserted state, fuel gas (such as natural gas or coal gas, etc.) can be blown into the reactor through the nozzle assembly 10 for the reactor. As Figure 1 shown, when the spray gun 300 is inserted into the channel 101, the external fuel gas enters the spray gun 300 through the fuel gas inlet 304; as Figure 5 shown, after the self-consuming part 301 in the spray gun 300 contacts the melt in the reactor, it melts or burns to self-consume and is blown into the reactor together with the fuel gas through the channel 101. It should be noted that during the production process of the reactor, after the spray gun 300 is inserted, the external process air at the process air inlet 201 in the three-way valve 200 should be immediately closed.

[0041] As Figure 2 shown, when the spray gun 300 is in the pulled-out state, process air (such as air or oxygen-enriched air) can be blown into the reactor through the nozzle assembly 10 for the reactor. When blowing process air into the reactor, the spray gun 300 is not required. The control part 203 (for example, the control part 203 can be a sealing steel ball) in the three-way valve 200 is in the sealed position, and the control part 203 disconnects the outer port 202. After the process air passes through the process air inlet 201, it is blown into the reactor through the channel 101.

[0042] As Figure 3 shown, when stopping blowing process air or fuel gas into the reactor, the plugging rod 400 can be inserted into the channel 101. During the production process of the reactor, when the plugging rod 400 is inserted into the channel 101, the external process air at the process air inlet 201 in the three-way valve 200 should be immediately closed.

[0043] Thus, the nozzle assembly 10 for a reactor according to an embodiment of the present invention can selectively blow different media directly into the reactor. For example, it can blow process air or fuel gas alone to supplement heat and rapidly increase the temperature of the melt in the reactor; moreover, it has a long service life and is flexible in use. During production, according to process requirements, the media blown into the reactor and the usage state (such as opening or closing) can be flexibly adjusted.

[0044] According to some embodiments of the present invention, as Figure 1 shown, the outer peripheral wall of the inner end of the spray gun 300 protrudes radially outward along the spray gun 300 to form a mating part 302. When the spray gun 300 is in the inserted state, the mating part 302 fits with the wall surface of the channel 101, which can prevent the melt from entering between the channel 101 and the spray gun 300.

[0045] Furthermore, asFigures 1-5 As shown, an air duct 102 is provided inside the nozzle body 100, and a channel 101 is formed inside the air duct 102. For example, the air duct 102 can be a wear-resistant steel pipe, which is beneficial to resist the erosion of high-speed gas on the nozzle body 100 and extend the service life of the nozzle body 100.

[0046] In some embodiments of the present invention, as Figure 1 shown, the inner peripheral wall of the inner end of the air duct 102 protrudes radially inward along the air duct 102 to form a reduced opening 103, which is beneficial to the insertion of the spray gun 300, the opening of the air port and the blocking of the air port. Especially when blocking the air port, it can prevent the blocking rod 400 from being inserted into the melt or not being blocked in place. Among them, when the spray gun 300 is in the inserted state, the fitting portion 302 is in contact with the reduced opening 103.

[0047] In some specific embodiments of the present invention, as Figure 1 shown, the shape of the self-damaging part 301 is adapted to the shape of the reduced opening 103, and the self-damaging part 301 is arranged at an interval from the reduced opening 103, which is beneficial to the insertion of the spray gun 300 and the contact of the self-damaging part 301 with the melt. For example, the radial width of the self-damaging part 301 gradually decreases inward along the axial direction of the spray gun 300.

[0048] Furthermore, as Figure 1 described, the radial width of the fitting portion 302 gradually increases first and then gradually decreases inward along the axial direction of the spray gun 300, so that the fitting portion 302 can be smoothly attached to or separated from the reduced opening 103.

[0049] According to some embodiments of the present invention, as Figure 1 shown, when the spray gun 300 is in the inserted state and the self-damaging part 301 is in the blocking state, the self-damaging part 301 protrudes inward from the inner end face of the nozzle body 100, so that the contact area between the self-damaging part 301 and the melt is larger, and the self-damaging part 301 is more likely to be heated and softened and melted.

[0050] According to some embodiments of the present invention, the inner end of the spray gun 300 can be a heat-resistant stainless steel pipe fitting, so that the service life is longer.

[0051] According to some embodiments of the present invention, a flow guide member or a spray head can be provided inside the inner end of the spray gun 300, which is beneficial to fluid flow and has a better heat supplement effect.

[0052] According to some embodiments of the present invention, as Figure 1 shown, a clamping member 303 is sleeved on the spray gun 300, and a clamping sleeve 204 is provided inside the outer port 202. The clamping member 303 is connected to the clamping sleeve 204, so that the spray gun 300 can be fixed to the tee 200.

[0053] According to some embodiments of the present invention, as Figure 1 and Figure 2As shown, a control passage 205 communicating with the outer port 202 is provided inside the tee joint 200. When the spray gun 300 is inserted into the tee joint 200, the control member 203 is pushed into the control passage 205, and when the spray gun 300 is pulled out of the tee joint 200, the control member 203 slides to the outer port 202. In this way, the on / off of the outer port 202 can be conveniently controlled by using the control member 203. For example, the control passage 205 extends obliquely inward away from the outer port 202, so that the control member 203 can fall back to the outer port 202 under the action of gravity.

[0054] According to some embodiments of the present invention, as Figure 1 shown, a cooling circuit 104 is formed inside the nozzle body 100 adjacent to the passage 101, and the cooling circuit 104 is defined by a cooling pipe arranged around the passage 101. The inner end face of the nozzle body 100 is in direct contact with the high-temperature melt in the reactor. By introducing cooling water into the cooling pipe, the nozzle body 100 can be cooled. For example, the nozzle body 100 is a copper part, and the cooling pipe can be a copper pipe. Of course, the cooling circuit 104 can also extend circuitously along the axial direction of the passage 101. For example, the cooling circuit 104 can be defined by a cooling groove inside the nozzle body 100.

[0055] In some embodiments of the present invention, as Figure 1 shown, an annular groove 105 can also be provided on the inner side end face of the nozzle body 100, which is beneficial for the splashed melt to adhere to the inner side end face of the nozzle body 100 and form a stable slag skin, so that the service life of the nozzle body 100 can be extended and the use safety can be ensured.

[0056] In some specific embodiments of the present invention, as Figure 1 shown, the outer end of the spray gun 300 includes a gas inlet 304 and a holding part 305. The outer end of the gas inlet 304 is connected to an external flexible gas pipeline, the inner end of the holding part 305 is communicated with the inner end of the gas inlet 304, and the outer end of the holding part 305 is sealed by a cover 306, so as to facilitate the operation of the spray gun 300.

[0057] The reactor 1 according to the embodiment of the second aspect of the present invention includes: the nozzle assembly 10 for the reactor and the reaction chamber 20 according to the embodiment of the first aspect of the present invention. The inner end of the nozzle body 100 is inserted into the reaction chamber 20 and extends inward beyond or flush with the inner wall of the reaction chamber 20.

[0058] The reactor 1 according to the embodiment of the present invention utilizes the nozzle assembly 10 for the reactor as described above, with rapid heat supplement, long service life and flexible use.

[0059] Next, the reactor 1 according to a specific embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0060] In this embodiment, the reactor 1 is a side-blown converter. A number of nozzle assemblies 10 for the reactor are arranged at the copper water jacket 21 of the tuyere on the first layer of the side-blown converter. The nozzle body 100 is installed together with the copper water jacket 21 of the tuyere on the first layer of the side-blown converter and is installed together with the tee 200 through the connecting piece 11. The inner end face of the nozzle body 100 contacts the high-temperature melt in the side-blown converter, and oxygen-enriched air is blown into the side-blown converter through the tee 200 or natural gas is blown into the side-blown converter through the spray gun 300. After the nozzle assembly 10 for the reactor is installed on the side-blown converter, before the side-blown converter is heated up, cooling circulating water needs to be introduced into the cooling pipe and the flow rate and pressure of the cooling circulating water meet the process requirements.

[0061] During the normal production of the side-blown converter, according to the process requirements, oxygen-enriched air and natural gas enter and are blown into the side-blown converter through the tee 200 and the gas spray gun 300 in the nozzle assemblies 10 for the reactor at different positions in the side-blown converter.

[0062] When it is not necessary to blow oxygen-enriched air or natural gas into the side-blown converter, the nozzle assembly 10 for the reactor is blocked with the blocking rod 400; when the nozzle assembly 10 for the reactor blows natural gas into the side-blown converter, the spray gun 300 needs to be inserted and the oxygen-enriched air is closed at the same time; when the nozzle assembly 10 for the reactor blows oxygen-enriched air into the side-blown converter, it is not necessary to insert the spray gun 300 and the blocking rod 400.

[0063] When it is necessary to replace or stop the nozzle assembly 10 for the reactor that is in use due to process requirements, before closing the oxygen-enriched air in the nozzle assembly 10 for the reactor, the blocking rod 400 needs to be quickly inserted 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 then closed.

[0064] It can be understood that only the process air and gas are taken as examples in the present invention to make relevant descriptions on the usage of the nozzle assembly 10 for the reactor, and this cannot be understood as a limitation of the present invention. The nozzle assembly 10 for the reactor can also introduce solid fuels or liquid fuels such as pulverized coal into the reactor 1.

[0065] Other components and operations of the reactor 1 according to the embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0066] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0067] In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0068] In the description of the present invention, "a first feature" and "a second feature" may include one or more of such features. The first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. The first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0069] It should be noted that in the description of the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, or may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "specific embodiments", "examples" or "some examples", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0071] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A nozzle assembly for a reactor, characterized in that, Comprising: A nozzle body having a channel running through both ends; A tee, which is installed at the outer end of the nozzle body and has a process air inlet and an outer port respectively communicating with the channel, and a control member is provided in the tee adjacent to the outer port; A spray gun having an inserted state and a withdrawn state. In the inserted state, the spray gun is inserted into the channel through the outer port, and in the withdrawn state, the control member is allowed to block the outer port. A self-damaging member is provided at the inner end of the spray gun, and the self-damaging member has a blocked state and a conducting state. In the blocked state, the self-damaging member blocks the inner end of the spray gun, and in the conducting state, the self-damaging member conducts the inner end of the spray gun; The outer peripheral wall of the inner end of the spray gun protrudes radially outward along the spray gun to form a mating portion, and in the inserted state of the spray gun, the mating portion fits against the wall surface of the channel.

2. The nozzle assembly for a reactor according to claim 1, characterized in that, The self-damaging member is configured as a fusible member or a flammable member.

3. The nozzle assembly for a reactor according to claim 1, characterized in that, An air duct is provided in the nozzle body, and the channel is formed inside the air duct.

4. The nozzle assembly for a reactor according to claim 3, characterized in that, The inner peripheral wall of the inner end of the air duct protrudes radially inward along the air duct to form a reduced opening, and in the inserted state of the spray gun, the mating portion fits against the reduced opening.

5. The nozzle assembly for a reactor according to claim 4, characterized in that, The shape of the self-damaging member is adapted to the shape of the reduced opening, and the self-damaging member is spaced from the reduced opening.

6. The nozzle assembly for a reactor according to claim 1, characterized in that, The radial width of the mating portion gradually increases first and then gradually decreases inward along the axial direction of the spray gun.

7. The nozzle assembly for a reactor according to claim 1, wherein, When the spray gun is in the inserted state and the self-damaging member is in the blocked state, the self-damaging member protrudes inward beyond the inner end face of the nozzle body.

8. The nozzle assembly for a reactor according to claim 1, characterized in that, The inner end of the spray gun is a heat-resistant stainless steel pipe fitting.

9. The nozzle assembly for a reactor according to claim 1, characterized in that, A flow guide member or a nozzle is provided inside the inner end of the spray gun.

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

11. The nozzle assembly for a reactor according to any one of claims 1-9, characterized in that, A control channel communicating with the outer port is provided in the tee. When the spray gun is inserted into the tee, the control member is pushed into the control channel, and when the spray gun is withdrawn from the tee, the control member slides to the outer port and seals the outer port.

12. The nozzle assembly for a reactor according to any one of claims 1-9, characterized in that, A cooling circuit is formed in the nozzle body adjacent to the channel. The cooling circuit extends circuitously along the axial direction of the channel or the cooling circuit is defined by a cooling pipe surrounding the channel.

13. A reactor, characterized in that, Comprising: A nozzle assembly for a reactor according to any one of claims 1-12; A reaction chamber, the inner end of the nozzle body is inserted into the reaction chamber and protrudes inward beyond or is flush with the inner wall of the reaction chamber.

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