CN213542466U

CN213542466U - Flame tube head structure for carbon black reaction furnace

Info

Publication number: CN213542466U
Application number: CN202022575383.9U
Authority: CN
Inventors: 不公告发明人
Original assignee: Chengdu Xuanding Energy Technology Co ltd
Current assignee: Chengdu Xuanding Energy Technology Co ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-06-25
Anticipated expiration: 2030-11-09

Abstract

The utility model discloses a flame tube head structure for carbon black reacting furnace, including the keysets, set up a plurality of through-holes on the keysets, every through-hole all corresponds installation swirler, and all swirlers all are located the homonymy of keysets, all set up gas fuel nozzle in every swirler. The utility model provides a flame tube head structure for carbon black reacting furnace to solve among the prior art in the carbon black reacting furnace gas fuel simple with the mixed mode of air, be difficult to the abundant problem that evenly burns, realize obtaining the good tissue combustion mode of gas fuel and air, be favorable to gas fuel's make full use of, guarantee that low reaches carbon black generates the purpose of necessary temperature condition.

Description

Flame tube head structure for carbon black reaction furnace

Technical Field

The utility model relates to a carbon black production field, concretely relates to flame tube head structure for carbon black reacting furnace.

Background

Carbon black is a product obtained by incomplete combustion or thermal decomposition of carbonaceous substances (coal, natural gas, heavy oil, fuel oil, etc.) under the condition of insufficient air, and can be used as black dye and reinforcing agent of rubber. The carbon black reacting furnace is a high-temperature device for producing carbon black, the combustion chamber is core equipment for producing carbon black by the carbon black reacting furnace, and the combustion chamber of the traditional carbon black reacting furnace is formed by piling refractory bricks in a steel furnace shell, so that the effect of resisting high-temperature gas above 2000 ℃ is achieved. The combustion chamber of the carbon black reaction furnace is firstly mixed and combusted by gas fuel and air, and then enters the throat section to carry out mixing reaction with raw oil. However, in the prior art, the mixing mode of the gas fuel and the air is rough and simple, the mixing is easy to be insufficient, the combustion is not uniform, the gas fuel is wasted, the sufficient reaction temperature is not provided for the downstream carbon black generation, and the quality of the carbon black is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a flame tube head structure for carbon black reacting furnace to solve among the prior art in the carbon black reacting furnace gas fuel simple with the mixed mode of air, be difficult to the abundant problem that evenly burns, realize obtaining the good tissue combustion mode of gas fuel and air, be favorable to gas fuel's make full use of, guarantee that low reaches carbon black generates the purpose of necessary temperature condition.

The utility model discloses a following technical scheme realizes:

a flame tube head structure for carbon black reacting furnace, including the keysets, set up a plurality of through-holes on the keysets, every through-hole all corresponds installation swirler, and all swirlers all are located the homonymy of keysets, all set up gas fuel nozzle in every swirler.

The mixed mode to gas fuel in the carbon black reacting furnace among the prior art is simple, be difficult to the problem that fully evenly burns, the utility model provides a flame tube head structure for carbon black reacting furnace, including the keysets, the keysets is used for installing the flame tube head at carbon black reacting furnace, uses as combustion chamber front end structure. The air cyclone is characterized in that a plurality of through holes are formed in the adapter plate, only air is allowed to pass through the through holes, and each through hole is provided with the cyclone, so that air essentially has to pass through the interior of the cyclone. All swirlers are located on the same side of the adapter plate, namely after the structure is installed, all swirlers are located on one side departing from the direction of the flame tube, and each swirler is internally provided with a gas fuel nozzle, so that gas fuel is sprayed out from the nozzles and then is mixed with air in the swirlers. Compared with the prior art, the gas fuel combustion stabilizing device has the advantages that air passes through the swirler to form the backflow area to stabilize flame, the backflow area is the rotating airflow formed after the air passes through the swirler, the rotating airflow is an area formed by backflow of the airflow due to the middle low-pressure area, the area is low in flow velocity and has the function of stabilizing flame, and compared with the prior art, the gas fuel combustion stability can be remarkably improved; secondly, each cyclone forms a backflow zone, and a plurality of backflow zones are formed at the downstream by the arrangement of a plurality of cyclones; the air and the fuel are mixed and combusted in each recirculation zone, and the gas fuel and the air are combusted in a zone mode, so that a good enough organization combustion mode can be obtained, and the turbulence can be improved. In addition, the tissue combustion mode is a partitioned diffusion combustion mode, namely incoming air is divided through a plurality of cyclones to form a plurality of backflow zones, gas fuel is matched with the cyclones through a plurality of gas fuel nozzles, and each backflow zone is a combustion zone, so that the uniformity of the gas is greatly improved, a good temperature field and a good flow field are provided for the downstream, the mixture of the raw oil from the raw oil nozzles is facilitated for the downstream, the chemical reaction processes of cracking the raw oil and the like are facilitated, and necessary temperature is provided for the generation of carbon black.

Furthermore, N circles of through hole groups are distributed on the adapter plate along the radial direction, each circle of through hole group comprises a plurality of through holes which are uniformly distributed in an annular mode, and N is larger than or equal to 2. In this scheme, the through-hole is the annular array and distributes on the keysets, and is concrete, and each circle of through-hole forms a through-hole group on the keysets, and the radial position between each through-hole group is different, and every circle of through-hole group includes the through-hole of a plurality of annular equipartitions. Of course, the number of the through holes and the number of the through holes in each circle are calculated according to the size and the air performance requirements of the reaction furnace for specific application, so that the air and the gas fuel mixture flowing out of each swirler are relatively uniform, and are not separated too far from each other or interfered and overlapped with each other.

Furthermore, the through holes in any two circles of through hole groups have different hole diameters. The through holes have different apertures, so the sizes and the number of the corresponding cyclones are different. Because the radial positions of any two circles of through hole groups are different, in order to ensure the stability of the respective backflow regions, the hole diameters of the through holes and the sizes and the meshes of the cyclones are also adjusted adaptively, and parameters such as the specific sizes and the meshes of the cyclones are set adaptively by a person skilled in the art according to specific use conditions.

Further, the inlet end of the gas fuel nozzle is positioned outside the swirler, and the outlet end of the gas fuel nozzle is positioned inside the swirler. The technical scheme ensures that the gas fuel can stably enter the interior of the swirler before being mixed with the air, and the turbulent flow field generated by the swirler is utilized to be fully mixed with the air in the swirler.

Furthermore, the swirler comprises a straight section, a reducing section and an expanding section which are connected in sequence; and swirl vanes are arranged in the straight section, nozzle mounting holes are formed in the swirl vanes, and the gas fuel nozzle penetrates through the nozzle mounting holes. Air enters the cyclone from the straight section, forms rotating airflow through the cyclone blades, is accelerated by the reducing section and then is sprayed into the flame tube through the expanding section to form a backflow zone.

Further, the gas fuel nozzle is in clearance fit with the nozzle mounting hole. Ensures stable installation of the gas fuel nozzle and facilitates individual disassembly and replacement.

Further, the inlet end of the gas fuel nozzle is communicated with the input end of the gas fuel. For the carbon black reaction furnace, gas fuel is input from a port, the port is an input end of the gas fuel, and the inlet end of each gas fuel nozzle is communicated with the input end, so that the gas fuel can stably enter each gas fuel nozzle and then is matched with the corresponding swirler.

Further, an outlet end of the gas fuel nozzle is located within the reducing section. The air is in a rotational flow state at the diameter reducing section and is mixed with the gas fuel in the accelerating process, so that the gas fuel and the air can be fully mixed, and the combustion stability in each backflow area is improved.

Further, the swirler is welded or bolted to the adapter plate.

Furthermore, the adapter plate is made of a high-temperature alloy material or a ceramic material. The erosion of gas scouring to the traditional refractory brick is reduced, the maintainability is good, the service life is long, and the cost is reduced.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

1. the utility model discloses a flame tube head structure for carbon black reacting furnace, air form the backward flow district through the swirler with flame stabilization, and the backward flow district is the rotatory air current that forms behind the swirler of air current, and this rotatory air current is the region that middle low-pressure area made the air current backward flow to form, and this regional velocity of flow is low to have flame stabilization's function, can show the combustion stability who improves gas fuel in comparison in prior art.

2. The utility model is used for the flame tube head structure of the carbon black reaction furnace, each swirler forms a backflow area, and a plurality of backflow areas are formed at the downstream through the arrangement of a plurality of swirlers; the air and the fuel are mixed and combusted in each recirculation zone, and the gas fuel and the air are combusted in a zone mode, so that a good enough organization combustion mode can be obtained, and the turbulence can be improved.

3. The utility model discloses a flame tube head structure for carbon black reacting furnace, its tissue combustion mode is a subregion diffusion combustion mode, it is "reposition of redundant personnel" through a plurality of swirlers to be about to flow the air, form a plurality of backward flow districts, gaseous fuel is also through a plurality of gas fuel nozzles and swirler phase-match, every backward flow district is exactly a combustion area, so the gas homogeneity improves greatly, be favorable to providing good temperature field for low reaches, the flow field, so that the raw oil that comes with the raw oil nozzle in low reaches mixes, be more favorable to raw oil to carry out chemical reaction processes such as schizolysis, be favorable to providing necessary ambient temperature for the carbon black generates.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a side view of an embodiment of the present invention;

fig. 2 is a front view of an adapter plate according to an embodiment of the present invention;

FIG. 3 is a schematic half-sectional view of a swirler in an embodiment of the present invention;

FIG. 4 is a schematic view of the assembly of a gas fuel nozzle in an embodiment of the invention;

fig. 5 is a schematic view of the tissue combustion mode according to an embodiment of the present invention.

Reference numbers and corresponding part names in the drawings:

3-a backflow zone, 4-a through hole, 5-a gas fuel nozzle, 6-a swirler, 601-a straight section, 602-a reducing section, 603-an expanding section, 604-a swirl vane, 605-a nozzle mounting hole, 7-an adapter plate and 8-flame.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

Example 1:

the flame tube head structure for the carbon black reaction furnace shown in fig. 1 and 2 comprises an adapter plate 7, wherein a plurality of through holes 4 are formed in the adapter plate 7, each through hole 4 is correspondingly provided with a swirler 6, all the swirlers 6 are positioned on the same side of the adapter plate 7, and a gas fuel nozzle 5 is arranged in each swirler 6.

In this embodiment, as shown in fig. 2, three circles of through hole groups are radially distributed on the adapter plate 7, and each circle of through hole group includes a plurality of through holes 4 uniformly distributed in a ring shape; the innermost ring of which has only one through-hole concentric with the adapter plate 7.

Preferably, the through holes in any two circles of through hole groups have different apertures; and the corresponding number of the swirlers is calculated according to the size and the aerodynamic performance of the swirlers, so that the air and gas fuel mixture flowing out of each swirler is uniformly distributed and is not separated too far from each other or interfered too heavy with each other.

The swirler 6 in this embodiment may be a single/multi-stage vane axial/radial swirler, a chamfered hole swirler, or another swirler capable of generating a stable recirculation zone.

Example 2:

in the flame tube head structure for a carbon black reactor, in example 1, the inlet end of the gas fuel nozzle 5 is located outside the swirler 6, and the outlet end is located inside the swirler 6. As shown in fig. 3, the cyclone 6 includes a straight section 601, a diameter reducing section 602, and an diameter expanding section 603 connected in sequence; swirl vanes 604 are arranged in the straight section 601, nozzle mounting holes 605 are formed in the swirl vanes 604, and the gas fuel nozzle 5 penetrates through the nozzle mounting holes 605.

Wherein the gas fuel nozzle 5 is a clearance fit with the nozzle mounting hole 605. The inlet end of the gas fuel nozzle 5 communicates with the input end of the gas fuel.

As shown in fig. 4, the outlet end of the gas fuel nozzle 5 is located within the reduced diameter section 602.

In a more preferable embodiment, the cyclones 6 are welded or bolted to the adapter plate 7 in one-to-one correspondence with the through holes 4; the adapter plate 7 is made of high-temperature alloy material.

In this embodiment, the air passes through the swirler to form the recirculation zone 3 to stabilize the flame 8, and the generation principle of the recirculation zone 3 is as follows: the rotating airflow formed after the air flows through the swirler 6 is low in pressure in the middle area, so that the airflow flows back to the formed area, and the area is low in flow velocity and has the function of stabilizing flame. Each cyclone 6 forms a backflow area 3, and the array type cyclones 6 form the array type backflow area 3 at the downstream of the array type cyclones; in each recirculation zone 3, air and fuel are mixed and combusted, so that a sufficiently good tissue combustion mode can be obtained by carrying out zone combustion on the gas fuel and the air; the organization combustion mode is a partitioned diffusion combustion mode, namely incoming flow air is divided through an array type swirler to form a plurality of backflow zones 3, gas fuel is matched with the swirler through a plurality of gas fuel nozzles, each backflow zone 3 is a combustion zone or a flame zone, so that the uniformity of the gas is greatly improved, a good temperature field and a good flow field are provided for a downstream choke so as to be mixed with raw oil from a raw oil nozzle, the raw oil is subjected to chemical reaction processes such as cracking, and necessary temperature is provided for the generation of carbon black in a reaction section.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Further, the term "connected" used herein may be directly connected or indirectly connected via other components without being particularly described.

Claims

1. A flame tube head structure for carbon black reacting furnace, its characterized in that includes keysets (7), set up a plurality of through-holes on keysets (7), every through-hole all corresponds installation swirler (6), and all swirlers (6) all are located the homonymy of keysets (7), all set up gas fuel nozzle (5) in every swirler (6).

2. The flame tube head structure for the carbon black reaction furnace as claimed in claim 1, wherein N circles of through hole groups are radially distributed on the adapter plate (7), each circle of through hole group comprises a plurality of annularly and uniformly distributed through holes, wherein N is more than or equal to 2.

3. The liner head construction for a carbon black reactor according to claim 2 wherein the through holes in any two ring sets of through holes are of different diameters.

4. The liner head construction for carbon black reactors according to claim 1, wherein the gas fuel nozzle (5) has an inlet end located outside the swirler (6) and an outlet end located inside the swirler (6).

5. The flame tube head structure for carbon black reactor according to claim 4, characterized in that the swirler (6) comprises a straight section (601), a reduced diameter section (602), and an expanded diameter section (603) connected in sequence; and swirl vanes (604) are arranged in the straight section (601), nozzle mounting holes (605) are formed in the swirl vanes (604), and the gas fuel nozzle (5) penetrates through the nozzle mounting holes (605).

6. The liner head construction for a carbon black reactor according to claim 5, wherein the gas fuel nozzle (5) is clearance fitted with the nozzle mounting hole (605).

7. The liner head construction for carbon black reactors according to claim 5, wherein the inlet end of the gaseous fuel nozzle (5) communicates with the input end of gaseous fuel.

8. The liner head construction for a carbon black reactor according to claim 5, wherein the outlet end of the gas fuel nozzle (5) is located within the reduced diameter section (602).

9. The liner head construction for carbon black reactors according to claim 1, wherein the swirler (6) is welded or bolted to an adapter plate (7).

10. The flame tube head structure for carbon black reactors according to claim 1, wherein the adapter plate (7) is made of a high temperature alloy material or a ceramic material.