Carbon black reaction furnace

Abstract

The utility model provides a carbon black reaction furnace which comprises a furnace body and at least two raw material oil guns, a refractory material layer is arranged on the inner wall of the hearth; the at least two raw oil guns are arranged on the end wall of the furnace body, and each raw oil gun comprises a gun body and a combustion air sleeve; two axial ends of the gun body are respectively an oil inlet end and an oil outlet end, the oil inlet end is connected with an oil inlet pipe, and the oil outlet end is connected with a spray head; the combustion air sleeve is arranged in the area, close to the oil outlet end, of the gun body in a sleeving mode, a sleeve opening, away from one end of the spray head, of the combustion air sleeve is sealed through an annular cover plate, the annular cover plate is relatively fixedly arranged on the periphery of the gun body in a sleeving mode, the sleeve opening, close to one end of the spray head, of the combustion air sleeve is opened, and the combustion air sleeve is used for inputting combustion air into the hearth in the axial direction.

Description

Technical Field

[0001] This utility model relates to the technical field of carbon black preparation equipment, and in particular to a carbon black reaction furnace. Background Technology

[0002] The carbon black reactor is a core piece of equipment in furnace carbon black production. In the existing design of carbon black reactors, the atomization effect of the raw material oil droplets is not good, and when the raw material oil droplets come into contact with the inner wall of the refractory material in the furnace, the oil droplets are prone to coking, which damages the inner wall of the refractory material and affects the service life of the reactor. Utility Model Content

[0003] One of the main objectives of this invention is to overcome at least one of the defects of the prior art and to provide a carbon black reactor that avoids the phenomenon of oil droplet coking.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] According to one aspect of the present invention, a carbon black reactor is provided, comprising a furnace body and at least two raw material oil guns; the furnace body has a furnace chamber, the inner wall of which is provided with a refractory material layer; at least two raw material oil guns are disposed on the end walls of the furnace body, each raw material oil gun comprising a gun body and a combustion air sleeve; the gun body has an oil inlet end and an oil outlet end at two axial ends, the oil inlet end being connected to an oil inlet pipe, and the oil outlet end being connected to a nozzle; the combustion air sleeve is sleeved on the area of ​​the gun body adjacent to the oil outlet end, the end of the sleeve away from the nozzle being closed by an annular cover plate, the annular cover plate being relatively fixedly sleeved on the outer periphery of the gun body, and the end of the combustion air sleeve near the nozzle being open, the combustion air sleeve being used to input combustion air axially into the furnace chamber.

[0006] According to one embodiment of the present invention, the combustion air sleeve includes a cylinder and an air inlet. The cylinder is sleeved on the gun body, the axial direction of the cylinder is parallel to the axial direction of the gun body, and the extension direction of the air inlet is perpendicular to the axial direction.

[0007] According to one embodiment of the present invention, the gun body is in the shape of a cylindrical tube, and the cylinder is in the shape of a cylindrical tube; wherein the central axis of the cylinder coincides with the central axis of the gun body, so that the opening of the cylinder near the nozzle end is annular.

[0008] According to one embodiment of the present invention, the air inlet extends radially along the cylinder.

[0009] According to one embodiment of the present invention, the annular cover plate is a first flange, which is fitted onto the outer periphery of the gun body through its own flange hole. A second flange is also provided on the outer periphery of the gun body. The second flange is located on the side of the combustion air sleeve away from the nozzle. The first flange and the second flange are assembled and connected to achieve relative fixation of the combustion air sleeve on the outer periphery of the gun body.

[0010] According to one embodiment of the present invention, the combustion air sleeve is made of stainless steel.

[0011] According to one embodiment of the present invention, the raw material oil gun further includes a compressed air inlet pipe, which is connected to the area of ​​the gun body adjacent to the oil inlet end, and is used to input compressed air into the gun body.

[0012] According to one embodiment of the present invention, the end wall is provided with a mounting hole, and the raw material oil gun is provided with the combustion air sleeve passing through the mounting hole.

[0013] According to one embodiment of the present invention, each of the raw material oil guns is arranged at equal intervals on the end wall.

[0014] According to one embodiment of the present invention, the furnace body is further connected to an air combustion chamber, which is used to input combustion air into the furnace chamber, and the input direction of the combustion air is the tangential direction of the furnace body.

[0015] As can be seen from the above technical solution, the advantages and positive effects of the carbon black reactor proposed in this utility model are as follows:

[0016] The carbon black reactor proposed in this utility model includes a furnace body and at least two raw material oil guns. The raw material oil guns are disposed on the end walls of the furnace body and include a gun body and a combustion air sleeve. An oil inlet pipe is connected to the oil inlet end of the gun body, and a nozzle is connected to the oil outlet end of the gun body. The combustion air sleeve is fitted onto the area of ​​the gun body near the oil outlet end. The end of the sleeve away from the nozzle is closed by an annular cover plate, which is fixedly fitted onto the outer periphery of the gun body. The end of the combustion air sleeve near the nozzle is open, serving as an opening for axially introducing combustion air into the furnace chamber. Through this structural design, this utility model can increase the axial input of combustion air using the combustion air sleeve, and utilize the axially input combustion air to converge the spray pattern of the raw material oil sprayed from the nozzle, thus achieving convergence of the combustion flame pattern. This avoids overlap between the sprays from different raw material oil guns and the resulting combustion flame, thereby preventing oil droplets from coking into the refractory material layer on the inner wall of the furnace chamber, effectively reducing low-hard carbon impurities in the carbon black, and extending the service life of the carbon black reactor. Attached Figure Description

[0017] The various objectives, features, and advantages of this invention will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. The drawings are merely illustrative illustrations of the invention and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein:

[0018] Figure 1 This is a side view of a carbon black reactor according to an exemplary embodiment;

[0019] Figure 2 yes Figure 1 The image shows an axial sectional view of the raw material oil gun.

[0020] The annotations in the attached figures are explained as follows:

[0021] 100. Furnace body;

[0022] 110. End wall;

[0023] 111. Mounting holes;

[0024] 120. Refractory material layer;

[0025] 200. Raw material oil gun;

[0026] 210. Gun body;

[0027] 211. Oil inlet pipe;

[0028] 212. Sprayer head;

[0029] 213. Second flange;

[0030] 220. Combustion air sleeve;

[0031] 221. Cylinder body;

[0032] 222. Air intake;

[0033] 223. First flange;

[0034] 230. Compressed air inlet pipe;

[0035] 300. Air combustion chamber. Detailed Implementation

[0036] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the description and drawings therein are for illustrative purposes only and not intended to limit this utility model.

[0037] In the following description of different exemplary embodiments of the present invention, reference is made to the accompanying drawings, which form part of the present invention, and which illustrate by way of example various exemplary structures, systems, and steps that can implement multiple aspects of the present invention. It should be understood that other specific embodiments of the components, structures, exemplary devices, systems, and steps may be used, and structural and functional modifications may be made without departing from the scope of the present invention. Furthermore, although the terms “above,” “between,” “within,” etc., may be used in this specification to describe different exemplary features and elements of the present invention, these terms are used herein only for convenience, such as the orientation according to the examples shown in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of the present invention.

[0038] See Figure 1 The illustration shows a side view of the carbon black reactor proposed in this invention, specifically illustrating one side of the end wall 110 of the carbon black reactor and the raw material oil gun 200 disposed on the end wall 110. In this exemplary embodiment, the carbon black reactor proposed in this invention is described using a soft carbon black furnace as an example. It will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes may be made to the following specific embodiments to apply the relevant design of this invention to other types of carbon black reactors, and these changes are still within the scope of the principle of the carbon black reactor proposed in this invention.

[0039] like Figure 1 As shown, in one embodiment of this utility model, the carbon black reactor proposed by this utility model includes a furnace body 100 and two raw material oil guns 200. (See also...) Figure 2 , Figure 2 The accompanying drawings show a representative axial sectional view of the raw material oil gun 200, which embodies the principle of this invention. The structure, connection method, and functional relationship of the main components of the carbon black reactor proposed in this invention will be described in detail below with reference to the above-mentioned drawings.

[0040] like Figure 1 and Figure 2 As shown, in one embodiment of the present invention, the furnace body 100 has a furnace chamber, and the inner wall of the furnace chamber is provided with a refractory material layer 120, which may be, for example, but not limited to, refractory bricks. Figure 1The embodiment shown is illustrated using 13 raw material oil guns 200 as an example. In other embodiments, the number of raw material oil guns 200 can be 2 to 12, 14, or more than 14. In other words, in various possible embodiments that conform to the design concept of this utility model, there can be at least two raw material oil guns 200. These raw material oil guns 200 are all disposed on the end wall 110 of the furnace body 100, and each raw material oil gun 200 includes a gun body 210 and a combustion air sleeve 220. The gun body 210 has an oil inlet end and an oil outlet end at its two axial ends, respectively. The oil inlet end is connected to an oil inlet pipe 211, and the oil outlet end is connected to a nozzle 212. The combustion air sleeve 220 is fitted onto the area of ​​the gun body 210 adjacent to the oil outlet end (i.e., the nozzle 212). The end of the combustion air sleeve 220 away from the nozzle 212 is closed by an annular cover plate, which is fixedly fitted onto the outer circumference of the gun body 210, thereby achieving relative fixation between the combustion air sleeve 220 and the gun body 210. The end of the combustion air sleeve 220 near the nozzle 212 is open, forming an annular shape defined by the inner circumference of the sleeve and the outer circumference of the gun body 210. Therefore, the combustion air sleeve 220 is used to axially input combustion air into the furnace. Through the above structural design, this utility model can increase the axial input of combustion air by using the combustion air sleeve 220, and use the axially input combustion air to converge the spray pattern of the raw material oil sprayed from the nozzle 212, that is, to achieve convergence of the combustion flame pattern, avoid the overlap of the sprays sprayed from different raw material oil guns 200 and the generated combustion flame, thereby preventing oil droplets from coking on the refractory material layer 120 of the furnace inner wall, effectively reducing low hard carbon impurities in carbon black, and extending the service life of the carbon black reactor.

[0041] like Figure 2 As shown, in one embodiment of this utility model, the combustion air sleeve 220 may include a cylinder 221 and an air inlet 222. The cylinder 221 is sleeved on the gun body 210, and the axial direction of the cylinder 221 is parallel to the axial direction of the gun body 210. The extending direction of the air inlet 222 is perpendicular to the aforementioned axial direction. In addition, one end of the air inlet 222 is connected to the cylinder 221, and the other end is used to connect to a first air source, which is used to supply combustion air.

[0042] Based on the structural design of the combustion air sleeve 220 including the cylinder 221, in one embodiment of this utility model, the gun body 210 can be in the shape of a cylindrical tube, and the cylinder 221 can be in the shape of a cylindrical tube. Furthermore, the central axis of the cylinder 221 coincides with the central axis of the gun body 210, so that the opening of the cylinder 221 near the nozzle 212 is annular. Through the above structural design, this utility model can make the combustion air output through the annular opening more uniform, thereby further optimizing the convergence effect of the spray pattern of the raw material oil. In some embodiments, the gun body 210 can also be a tubular structure of other shapes, such as an elliptical tube or a square tube, and the cylinder 221 can also be a tubular structure of other shapes, such as an elliptical cylinder or a square cylinder, etc., and is not limited to this embodiment.

[0043] Based on the structural design of the combustion air sleeve 220, which includes a cylinder 221 and an air inlet 222, in one embodiment of this utility model, the air inlet 222 can extend radially along the cylinder 221 (i.e., the gun body 210), meaning that the combustion air entering the cylinder 221 through the air inlet 222 is radially input. In some embodiments, based on the design that the extension direction of the air inlet 222 is perpendicular to the axial direction, the air inlet 222 can also extend along the tangential direction of the cylinder 221, and is not limited to this embodiment.

[0044] like Figure 2 As shown, in one embodiment of this utility model, the annular cover plate can be a first flange 223, which is fitted onto the outer periphery of the gun body 210 via its own flange hole. Correspondingly, a second flange 213 can also be provided on the outer periphery of the gun body 210, which is located on the side of the combustion air sleeve 220 away from the nozzle 212. Accordingly, the first flange 223 and the second flange 213 are assembled and connected to achieve relative fixation of the combustion air sleeve 220 on the outer periphery of the gun body 210. Through the above structural design, this utility model can realize the assembly of the combustion air sleeve 220 and the gun body 210 by means of flange connection, which helps to reduce assembly difficulty, simplify structural complexity, and realize the disassembly of the combustion air sleeve 220, thereby facilitating component replacement and maintenance.

[0045] In one embodiment of this utility model, the combustion air sleeve 220 can be made of stainless steel.

[0046] like Figure 2As shown, in one embodiment of this utility model, the raw material oil gun 200 may further include a compressed air inlet pipe 230, which is connected to the area of ​​the gun body 210 near the oil inlet end. The compressed air inlet pipe 230 is used to input compressed air into the gun body 210. Through the above structural design, this utility model can use the compressed air input through the compressed air inlet pipe 230 to atomize the raw material oil in the gun body 210, so that the atomized raw material oil is sprayed out through the nozzle 212.

[0047] like Figure 1 As shown, in one embodiment of this utility model, the end wall 110 of the furnace body 100 may be provided with mounting holes 111. Based on this, the raw material oil gun 200 is inserted through the mounting hole 111 by a combustion air sleeve 220. In other words, the end wall 110 with multiple mounting holes 111 can also be considered a multi-hole panel structure, and it is an integral structure with the furnace body 100, jointly enclosing the furnace chamber. Through the above structural design, this utility model can realize the insertion and assembly of the raw material oil gun 200 on the end wall 110, and can maintain the channel arrangement of the combustion air sleeve 220, facilitating the entry of combustion air from outside the furnace body 100 into the combustion air sleeve 220 and then into the furnace chamber.

[0048] like Figure 1 As shown, in one embodiment of this invention, the raw material oil guns 200 can be arranged evenly at intervals on the end wall 110. For example, the raw material oil guns 200 can be arranged in an array on the end wall 110, or they can be arranged along at least two annular paths on the end wall 110, with these annular paths being concentric and nested sequentially. Through the above structural design, this invention enables the raw material oil spray and combustion air input to each raw material oil gun 200 to be more evenly distributed, thereby further avoiding overlap of the sprays emitted from different raw material oil guns 200 and the combustion flames generated.

[0049] like Figure 1 As shown, in one embodiment of the present invention, the furnace body 100 may also be connected to an air combustion chamber 300, which is used to input combustion air into the furnace chamber, and the input direction of the combustion air is the tangential direction of the furnace body 100.

[0050] Based on the detailed description of several exemplary embodiments of the carbon black reactor proposed in this utility model above, the following is a brief introduction to the use of the carbon black reactor:

[0051] 100. Furnace body 100; 110. End wall 110; 111. Mounting hole 111; 120. Refractory material layer 120; 200. Raw material oil gun 200; 210. Gun body 210; 211. Oil inlet pipe 211; 212. Nozzle 212; 213. Second flange 213; 220. Combustion air sleeve 220; 221. Cylinder body 221; 222. Air inlet 222; 223. First flange 223; 230. Compressed air inlet pipe 230; 300. Air combustion chamber 300.

[0052] During use, the raw oil enters the gun body 210 through the oil inlet pipe 211, and the compressed air enters the gun body 210 through the compressed air inlet pipe 230 to achieve high-pressure atomization of the raw oil. Then, the raw oil is mixed and sprayed out through the nozzle 212. Part of the combustion air enters the furnace directly in the tangential direction through the air combustion chamber 300, and another part of the combustion air enters the furnace axially through the combustion air sleeve 220. The raw oil is injected into each raw oil gun 200, so that it produces carbon black in the furnace in the form of incomplete combustion. The combustion flame shape is converged by the axially input combustion air to avoid overlapping with the sprays sprayed from other raw oil guns 200, thereby preventing oil droplets from coking on the refractory material layer 120 of the furnace inner wall.

[0053] Based on the carbon black products obtained through the above process, the conclusion is that the product quality and water washing screen residue can be controlled to less than 100 ppm, the production operation is stable, and the product consumption per ton of carbon black is reduced by 40 kg / h. Calculated based on a production unit with an annual output of 40,000 tons, it can save 40,000 * 0.04 = 1,600 tons of raw material oil per year. At 4,000 yuan per ton of raw material oil, the annual savings amount to 6.4 million yuan, which has good economic benefits.

[0054] It should be noted that the carbon black reactors shown in the accompanying drawings and described in this specification are merely a few examples among many carbon black reactors capable of employing the principles of this invention. It should be clearly understood that the principles of this invention are by no means limited to any detail or component of the carbon black reactors shown in the accompanying drawings or described in this specification.

[0055] In summary, the carbon black reactor proposed in this utility model includes a furnace body 100 and at least two raw material oil guns 200; the raw material oil guns 200 are disposed on the end wall 110 of the furnace body 100 and include a gun body 210 and a combustion air sleeve 220; the oil inlet end of the gun body 210 is connected to an oil inlet pipe 211, and the oil outlet end of the gun body 210 is connected to a nozzle 212; the combustion air sleeve 220 is sleeved in the area of ​​the gun body 210 near the oil outlet end, and the cylinder opening at the end away from the nozzle 212 is closed by an annular cover plate, which is relatively fixedly sleeved on the outer periphery of the gun body 210, and the cylinder opening at the end of the combustion air sleeve 220 near the nozzle 212 is open, and the combustion air sleeve 220 is used to input combustion air into the furnace along the axial direction. Through the above structural design, this utility model can increase the axial input of combustion air by using the combustion air sleeve 220, and use the axially input combustion air to converge the spray pattern of the raw material oil sprayed from the nozzle 212, that is, to achieve convergence of the combustion flame pattern, avoid the overlap of the sprays sprayed from different raw material oil guns 200 and the generated combustion flame, thereby preventing oil droplets from coking on the refractory material layer 120 of the furnace inner wall, effectively reducing low hard carbon impurities in carbon black, and extending the service life of the carbon black reactor.

[0056] The exemplary embodiments of the carbon black reactor proposed by this utility model have been described and / or illustrated in detail above. However, the embodiments of this utility model are not limited to the specific embodiments described herein; rather, components and / or steps of each embodiment may be used independently and separately from other components and / or steps described herein. Each component and / or step of one embodiment may also be used in combination with other components and / or steps of other embodiments. In describing the elements / components / etc. described and / or illustrated herein, the terms "a," "an," and "the above" are used to indicate the presence of one or more elements / components / etc. The terms "comprising," "including," and "having" are used to indicate an open-ended inclusion and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc. Furthermore, the terms "first" and "second," etc., in the claims and specification are used only as illustrative marks and are not intended to limit the numerical scope of the object.

[0057] Although the carbon black reactor proposed in this invention has been described according to different specific embodiments, those skilled in the art will recognize that modifications can be made to the implementation of this invention within the spirit and scope of the claims.

Claims

1. A carbon black reaction furnace, characterized in that, include: The furnace body has a furnace chamber, the inner wall of which is provided with a refractory material layer; as well as At least two raw material oil guns are disposed on the end wall of the furnace body, and the raw material oil guns include: The gun body has an oil inlet and an oil outlet at its two axial ends, respectively. The oil inlet is connected to an oil inlet pipe, and the oil outlet is connected to a nozzle. and A combustion air sleeve is fitted onto the area of ​​the gun body near the oil outlet end. The end of the sleeve away from the nozzle is closed by an annular cover plate, which is fixedly fitted onto the outer periphery of the gun body. The end of the combustion air sleeve near the nozzle is open. The combustion air sleeve is used to axially input combustion air into the furnace.

2. The carbon black reactor according to claim 1, characterized in that, The combustion air sleeve includes a cylinder and an air inlet. The cylinder is sleeved on the gun body, the axis of the cylinder is parallel to the axis of the gun body, and the extension direction of the air inlet is perpendicular to the axis.

3. The carbon black reactor according to claim 2, characterized in that, The gun body is in the shape of a cylindrical tube, and the cylinder is in the shape of a cylindrical tube; wherein the central axis of the cylinder coincides with the central axis of the gun body, so that the opening of the cylinder near the nozzle end is annular.

4. The carbon black reactor according to claim 3, characterized in that, The air inlet extends radially along the cylinder.

5. The carbon black reactor according to claim 1, characterized in that, The annular cover plate is a first flange, which is fitted onto the outer periphery of the gun body through its own flange hole. A second flange is also provided on the outer periphery of the gun body. The second flange is located on the side of the combustion air sleeve away from the nozzle. The first flange and the second flange are assembled and connected to achieve relative fixation of the combustion air sleeve on the outer periphery of the gun body.

6. The carbon black reactor according to claim 1, characterized in that, The combustion air sleeve is made of stainless steel.

7. The carbon black reactor according to claim 1, characterized in that, The raw material oil gun also includes a compressed air inlet pipe, which is connected to the area of ​​the gun body adjacent to the oil inlet end, and is used to input compressed air into the gun body.

8. The carbon black reactor according to claim 1, characterized in that, The end wall has a mounting hole, and the raw material oil gun is made by inserting the combustion air sleeve through the mounting hole.

9. The carbon black reactor according to claim 1, characterized in that, Each of the raw material oil guns is evenly spaced on the end wall.

10. The carbon black reactor according to claim 1, characterized in that, The furnace body is also connected to an air combustion chamber, which is used to input combustion air into the furnace chamber, and the input direction of the combustion air is the tangential direction of the furnace body.

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