Methanol cracking burner

Abstract

The utility model discloses a methanol cracking burner which comprises a fire spraying cylinder, a steam pocket, a return pipe, a fire spraying pipe I, an igniter, a liquid inlet pipe, a cracking coil pipe, a fire spraying pipe II, a fire spraying pipe III, a gas inlet pipe I and a gas inlet pipe II, one end of the fire spraying cylinder is open, the cracking coil pipe and the fire spraying pipe III are positioned in the fire spraying cylinder, and one end of the cracking coil pipe is communicated with the liquid inlet pipe. The methanol cracking burner disclosed by the utility model has the beneficial effects that methanol cracking gas is collected and temporarily stored by arranging the steam pocket and then is redistributed into each fire spraying pipe for combustion and fire spraying, and the design concept concept is that only one cracking pipe is arranged in the burner shell and is specially used for cracking methanol; methanol cracking gas is fed into the steam pocket to be temporarily stored through the cracking pipe, the steam pocket distributes the cracking gas, due to the fact that only one cracking pipe is arranged, the size of the burner is reduced, the manufacturing cost is reduced, the length of the fire spraying pipe is short, assembling is easy and convenient, and assembling of one cracking pipe does not spend a long time.

Description

Technical Field

[0001] The utility model relates to the field of burners, in particular to a methanol cracking burner. Background Art

[0002] Currently, most common methanol cracking burners on the market have a design concept of arranging multiple cracking tubes within the burner housing. A flame nozzle is provided at the gas outlet of each cracking tube. After methanol is cracked in the cracking tubes, it is directly burned at the flame nozzles and flames are ejected. For example, as shown in patents with publication numbers CN114704829A and CN205717191U, methanol cracking burners with this design concept have the following problems in actual use:

[0003] 1. The manufacturing cost is high. Because the cracking tube must ensure complete cracking of methanol, its length is generally long. The total length of so many cracking tubes is very large, and the material cost and manufacturing cost are relatively high, which ultimately makes the overall cost of the methanol cracking burner high.

[0004] 2. Large size and limited application. Because the cracking tubes are long, a large space is required to evenly arrange multiple cracking tubes in the burner shell. Therefore, the burner is large in size and difficult to use in some occasions (for example, the burner needs to be inserted into a narrow gap for flame combustion).

[0005] 3. High assembly cost. Due to the burner volume limitation, the internal space of the burner shell is generally not designed to be very spacious. The space is often compact. It is difficult to evenly install multiple long cracking tubes in such a compact space. In addition, there are many pipe joints, which takes a long time to assemble, has low assembly efficiency and high assembly cost. Utility Model Content

[0006] The main purpose of the utility model is to provide a methanol cracking burner, aiming to solve the problems existing in the existing methanol cracking burners mentioned in the above background technology.

[0007] In order to solve the above problems, the utility model proposes a methanol cracking burner, comprising a flamethrower, a steam drum, a return pipe, a flamethrower tube 1, an igniter, a liquid inlet pipe, a cracking coil, a flamethrower tube 2, a flamethrower tube 3, an air intake pipe 1, and an air intake pipe 2. One end of the flamethrower is open, and the cracking coil and the flamethrower tube 3 are located in the flamethrower. One end of the cracking coil is connected to the liquid inlet pipe, and the other end of the cracking coil is connected to the return pipe. The other end of the return pipe is connected to the steam drum. The steam drum is connected to the flamethrower tube 3 through the flamethrower tube 2. An end of the flamethrower tube 3 away from the flamethrower tube 2 faces the cracking coil and is used to spray fire to the open end of the flamethrower and heat the cracking coil. One end of the flamethrower tube 1 is connected to the spray pipe and the air intake pipe 1 and is provided with an igniter. The other end of the flamethrower tube 1 extends into the flamethrower and faces the cracking coil, and is used to spray fire to the open end of the flamethrower and heat the cracking coil.

[0008] One end of the sealed fire tube is communicated with the second intake pipe.

[0009] In one embodiment, there are multiple third fire tubes, which are centrally symmetrically distributed around the central axis of the cracking coil tube at one end of the sealed fire tube. Each third fire tube is internally communicated with the steam drum through a second fire tube. The flame ejected from the third fire tube penetrates through the inside of the cracking coil tube, and the central axis of the cracking coil tube coincides with the central axis of the fire tube.

[0010] In one embodiment, the liquid inlet pipe penetrates through the steam drum.

[0011] In one embodiment, an annular pipe coaxial with the steam drum is arranged inside the steam drum, and both ends of the annular pipe are communicated with the liquid inlet pipe;

[0012] The steam drum and the fire tube are coaxial.

[0013] In one embodiment, the first fire tube penetrates through the steam drum, and the first fire tube, the steam drum, and the fire tube are coaxial;

[0014] The flame ejected from the first fire tube penetrates through the inside of the cracking coil tube.

[0015] In one embodiment, an annular spray pipe is arranged inside the steam drum. The annular spray pipe is tightly sleeved on the first fire tube and is coaxial with the first fire tube. One end of the annular spray pipe facing away from the second fire tube is provided with a plurality of spray holes distributed in central symmetry. One end of the return pipe extends into the steam drum and is communicated with the annular spray pipe.

[0016] In one embodiment, a coaxial conical cylinder is tightly sleeved on the first fire tube inside the steam drum. The conical cylinder faces the spray holes, and the gas ejected from the spray holes flows smoothly along the conical surface of the conical cylinder;

[0017] The steam drum is cylindrical. The second fire tube is located at the lower end face of the inner wall of the steam drum. The bottom surface of the conical cylinder is closely attached to the upper end face of the inner wall of the steam drum. Coaxial guide rings are fixedly installed on both the upper and lower end faces of the inner wall of the steam drum. The outer circumferential surface of the guide ring is closely attached to the circumferential surface of the inner wall of the steam drum. The axial two ends of the inner side surface of the guide ring are smoothly connected to the end face and the circumferential surface of the inner wall of the steam drum.

[0018] In one embodiment, a mounting plate is detachably and fixedly installed at one end of the fire tube, and one end of the fire tube is sealed through the mounting plate.

[0019] In one embodiment, the steam drum and the mounting plate are spaced apart;

[0020] The second fire tube, the liquid inlet pipe, and the return pipe all penetrate through the mounting plate and are hermetically and fixedly connected to the mounting plate.

[0021] Beneficial effects: The methanol cracking burner of the present utility model collects and temporarily stores the methanol cracking gas by setting a steam drum, and then redistributes it into each flame spraying pipe for combustion and flame spraying. This design concept only requires arranging a cracking pipe inside the burner housing specifically for cracking methanol. The cracking pipe sends the methanol cracking gas into the steam drum for temporary storage, and the steam drum distributes the cracking gas. Since only one cracking pipe is set, the volume of the burner is reduced, the manufacturing cost is lowered, and the length of the flame spraying pipe is short, and the assembly is simple and convenient. Assembling one cracking pipe does not take a long time either. Compared with the traditional methanol cracking burner, the assembly speed and efficiency are significantly improved, and the assembly cost is reduced. Brief Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 is the front view of a methanol cracking burner of the present utility model;

[0024] Figure 2 is the right view of a methanol cracking burner of the present utility model;

[0025] Figure 3 is the top view of a methanol cracking burner of the present utility model;

[0026] Figure 4 is the installation schematic diagram of the annular pipe, conical cylinder and guide ring of the present utility model;

[0027] Figure 5 is the structural schematic diagram of the annular spray pipe of the present utility model.

[0028] The description of the reference numerals is as follows:

[0029] 1. Steam drum; 2. First flame spraying pipe; 3. First air inlet pipe; 4. Spray pipe; 5. Igniter; 6. Liquid inlet pipe; 7. Cracking coil pipe; 8. Return pipe; 9. Second flame spraying pipe; 10. Installation plate; 11. Flame spraying cylinder; 12. Second air inlet pipe; 13. Third flame spraying pipe; 14. Annular pipe; 15. Guide ring; 16. Annular spray pipe; 17. Conical cylinder; 18. Air inlet hole; 19. Spray hole. Detailed Embodiment

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0032] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0034] The present utility model proposes a methanol cracking burner. This methanol cracking burner collects and temporarily stores the methanol cracking gas through the setting of a steam drum 1, and then redistributes it into each spouting pipe for combustion and flame spraying. This design concept only requires arranging a cracking pipe inside the burner housing specifically for cracking methanol. The cracking pipe sends the methanol cracking gas into the steam drum 1 for temporary storage, and the steam drum 1 distributes the cracking gas. Since only one cracking pipe is set, the volume of the burner is reduced, the manufacturing cost is lowered, and the spouting pipe is short in length, simple and convenient to assemble. Assembling one cracking pipe does not take a long time either. Compared with the traditional methanol cracking burner, the assembling speed and efficiency are both significantly improved, and the assembling cost is reduced.

[0035] Specifically, in an embodiment of the utility model, as Figures 1 - 3 shown, the methanol cracking burner includes a spouting cylinder 11, a steam drum 1, a return pipe 8, a first spouting pipe 2, an igniter 5, a liquid inlet pipe 6, a cracking coiled pipe 7, a second spouting pipe 9, a third spouting pipe 13, a first inlet pipe 3, and a second inlet pipe 12. One end of the spouting cylinder 11 is open and the other end is sealed. The flame inside the spouting cylinder 11 shoots out from the open end of the spouting cylinder 11. Preferably, an installation plate 10 is detachably and fixedly installed at one end of the spouting cylinder 11, and the one end of the spouting cylinder 11 is sealed through the installation plate 10. With this design, it is convenient to install and fix the second spouting pipe 9, the liquid inlet pipe 6, and the return pipe 8.

[0036] In this embodiment, as Figure 1 shown, the cracking coiled pipe 7 and the third spouting pipe 13 are located inside the spouting cylinder 11. One end of the cracking coiled pipe 7 is communicated with the liquid inlet pipe 6, the other end of the cracking coiled pipe 7 is communicated with the return pipe 8, the other end of the return pipe 8 is communicated with the steam drum 1, the steam drum 1 is communicated with one end of the second spouting pipe 9, the other end of the second spouting pipe 9 is communicated with one end of the third spouting pipe 13, and the other end of the third spouting pipe 13 faces the cracking coiled pipe 7 for spraying fire towards the open end of the spouting cylinder 11 and heating the cracking coiled pipe 7. There are multiple third spouting pipes 13, and they are centrally symmetrically distributed at the sealed end of the spouting cylinder 11 with the central axis of the cracking coiled pipe 7 as the center. Each third spouting pipe 13 is internally communicated with the steam drum 1 through a second spouting pipe 9. The flame sprayed out by the third spouting pipe 13 penetrates through the inside of the cracking coiled pipe 7. With this design, the methanol liquid enters the cracking coiled pipe 7 through the liquid inlet pipe 6, is thermally cracked into gas inside the cracking coiled pipe 7, the cracking gas enters the steam drum 1 through the return pipe 8 for temporary storage, then enters each second spouting pipe 9, and is sprayed out from the end of each third spouting pipe 13 and ignited to form a tongue of flame. The tongue of flame penetrates through the inside of the cracking coiled pipe 7 to heat the cracking coiled pipe 7 and sprays towards the open end of the spouting cylinder 11.

[0037] In this embodiment, the central axis of the cracking coiled pipe 7 coincides with the central axis of the spouting cylinder 11. With this design, it is beneficial for the spouting cylinder 11 to spray a uniform tongue of flame.

[0038] In this embodiment, the end of the third flame jet pipe 13 points to the inner side of the cracking coil 7 near one end of the flame jet cylinder 11 that is sealed. With this design, the flame ejected from the end of the third flame jet pipe 13 can penetrate through the cracking coil 7 and heat the cracking coil 7, ensuring that the temperature inside the cracking coil 7 meets the requirements for methanol cracking. In addition, with this design, the length of the second flame jet pipe 9 is shorter, which is easy to install. Moreover, using the mounting plate 10 to seal one end of the flame jet cylinder 11 further greatly facilitates the installation and fixation of the second flame jet pipe 9, the liquid inlet pipe 6, and the reflux pipe 8. Finally, the assembly work of the methanol cracking burner becomes simple, convenient, and fast. Not only does it not take a long time to assemble one cracking pipe, but the short second flame jet pipe 9 can be quickly evenly distributed and fixed in the flame jet cylinder 11 by means of passing through and fixing on the mounting plate 10. The installation is simple, the assembly speed and efficiency are high, and the assembly cost is low. Compared with the traditional methanol cracking burner, the assembly speed and efficiency are significantly improved, and the assembly cost is significantly reduced.

[0039] In this embodiment, preferably, the steam drum 1 and the mounting plate 10 are arranged at intervals. With this design, the high temperature inside the flame jet cylinder 11 can be prevented from affecting the safety of the steam drum 1. Correspondingly, the second flame jet pipe 9, the liquid inlet pipe 6, and the reflux pipe 8 all penetrate through the mounting plate 10 and are fixedly connected to the mounting plate 10 in a sealed manner.

[0040] In this embodiment, as Figure 1 shown, one end of the first flame jet pipe 2 is connected to the spray pipe 4 and the first air inlet pipe 3, and an igniter 5 is provided. Air enters one end inside the first flame jet pipe 2 from the first air inlet pipe 3. A spray nozzle is installed on the spray pipe 4. Methanol is sprayed into the spray pipe 4 through the spray nozzle to form a mist, and is mixed with air, and then is ignited by the igniter 5 to generate a flame. The flame ejects from the other end of the first flame jet pipe 2. The other end of the first flame jet pipe 2 extends into the flame jet cylinder 11 and faces the cracking coil 7, and is used to spray fire towards the open end of the flame jet cylinder 11 and heat the cracking coil 7.

[0041] Preferably, the first flame jet pipe 2 and the cracking coil 7 are coaxial. With this design, as Figure 1As shown, the flame ejected from the first flame spray pipe 2 penetrates through the inside of the cracking coil pipe 7. The flame ejected from the first flame spray pipe 2 can be ejected downward to a relatively long distance without being blocked by the cracking coil pipe 7. The cracking coil pipe 7 is spiral, and there is no obstruction near its central axis. Therefore, the flame ejected from the first flame spray pipe 2 can be ejected downward to a relatively long distance, thereby heating the inner side surface of the cracking coil pipe 7. Moreover, the flame can be ejected from the open end at the lower end of the flame spray cylinder 11. At the same time, the flame ejected from the third flame spray pipe 13 penetrates through the inside of the cracking coil pipe 7 to heat the cracking coil pipe 7 and is ejected toward the open end of the flame spray cylinder 11. The flame ejected from the third flame spray pipe 13 is vertically downward and will not be blocked by the cracking coil pipe 7. The flame ejected from the third flame spray pipe 13 can be ejected from the open end at the lower end of the flame spray cylinder 11. This structural layout form not only ensures excellent flame spraying performance of the flame spray cylinder 11, but also ensures that the temperature inside the cracking coil pipe 7 meets the methanol cracking requirements. Moreover, the cracking coil pipe 7 is spiral, with a large design length and a small volume, ensuring complete methanol cracking. At the same time, it is beneficial to further reduce the diameter and axial length of the flame spray cylinder 11, which not only reduces the manufacturing cost of the methanol cracking burner, but also expands the application range of the methanol cracking burner and can be used in narrow spaces; in addition, the length of one cracking coil pipe 7 is much smaller than the sum of the lengths of multiple cracking pipes after all. Therefore, the overall material cost and manufacturing cost of the methanol cracking burner will be significantly reduced. After all, the steam drum 1 only needs to store hot gas, and the temperature of the hot gas is not high, while the cracking pipe needs to withstand high temperature to achieve methanol cracking. Therefore, the manufacturing material costs of the two are quite different. Therefore, even though the methanol cracking burner in this embodiment adds the technical feature of the steam drum 1, its material cost is low, and since many cracking pipes are reduced and only one cracking coil pipe 7 is needed, the overall material cost and manufacturing cost of the methanol cracking burner are still greatly reduced.

[0042] In this embodiment, as Figure 1 shown, the sealed end of the flame spray cylinder 11 is communicated with the second intake pipe 12. With such a design, air can be injected into the flame spray cylinder 11 through the second intake pipe 12 to provide air for the combustion of the cracking gas at the end of the third flame spray pipe 13.

[0043] In this embodiment, preferably, the liquid inlet pipe 6 penetrates through the steam drum 1. With such a design, it is convenient to use the cracking gas in the steam drum 1 to preheat the methanol liquid in the liquid inlet pipe 6, so that it can be quickly cracked completely in the cracking coil pipe 7, shortening the cracking time. At the same time, the length of the cracking coil pipe 7 can also be appropriately shortened. Correspondingly, the axial length of the flame spray cylinder 11 can also be appropriately shortened, which is beneficial to further reducing the volume of the methanol cracking burner.

[0044] Furthermore, to improve the preheating effect, as Figure 4As shown, a circular tube 14 coaxial with the steam drum 1 is provided in the steam drum 1, and both ends of the circular tube 14 are connected to the liquid inlet pipe 6. This design increases the time for the methanol liquid to be preheated in the steam drum 1, further shortens the cracking time and the length of the cracking coil 7, thereby further shortening the axial length of the flamethrower 11 and further reducing the volume of the methanol cracking burner.

[0045] Preferably, the flame-spraying tube 2 passes through the steam drum 1, and the flame-spraying tube 2, the steam drum 1, the flame-spraying tube 11, the cracking coil 7, and the annular nozzle 16 are coaxial. Such a design is conducive to the uniform distribution of the flame sprayed by the flame-spraying tube 11.

[0046] In this embodiment, if Figure 4 As shown, an annular nozzle 16 is provided in the drum 1, and the annular nozzle 16 is tightly sleeved on the flame-spraying tube 2 and is coaxial with the flame-spraying tube 2. Figure 5 As shown, the end of the annular nozzle 16 away from the flame-spraying tube 2 9, that is, Figure 4 The upper surface of the annular nozzle 16 is provided with a plurality of injection holes 19 distributed symmetrically with respect to the center. One end of the return pipe 8 extends into the steam drum 1 and is connected to the annular nozzle 16. After the cracked gas enters the annular nozzle 16, it is ejected upward from each injection hole 19. Figure 4 As shown, the flame-spraying tube 2 in the drum 1 is tightly sleeved with a coaxially arranged cone 17, and the cone 17 faces the jet hole 19. With this design, the gas ejected from the jet hole 19 flows vertically upward along the conical surface of the cone 17. The drum 1 is cylindrical, and the flame-spraying tube 29 is located at the lower end surface of the inner wall of the drum 1. The bottom surface of the cone 17 is in close contact with the upper end surface of the inner wall of the drum 1. Coaxial guide rings 15 are fixedly installed on the upper and lower end surfaces of the inner wall of the drum 1. The outer circumferential surface of the guide ring 15 is in close contact with the inner wall circumferential surface of the drum 1. The axial ends of the inner side surface of the guide ring 15 are smoothly connected to the inner wall end surface and the inner wall circumferential surface of the drum 1, as shown in FIG. Figure 4 As shown, this design facilitates the airflow ejected from the jet hole 19 to flow evenly and smoothly in the drum 1 and finally enter each flame-spraying tube 2 9. The design of the annular nozzle 16, the cone 17, and the guide ring 15 facilitates reducing the flow difference of the cracked gas in each flame-spraying tube 2 9 and promoting the flow balance of the cracked gas in each flame-spraying tube 2 9. At the same time, the cone 17 and the guide ring 15 facilitate reducing the flow resistance of the airflow.

[0047] It can be seen that the methanol cracking burner of this embodiment utilizes the heat generated during the combustion process to crack methanol through combustion, heating and pressurization, and adopts a multi-stage multi-nozzle guide structure composed of a flame tube 2 and a flame tube 3 13 for secondary combustion.

[0048] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields shall be included within the patent protection scope of the present utility model.

Claims

1. A methanol cracking burner, characterized in that, It includes a flame jet tube, a steam drum, a reflux pipe, a first flame pipe, an igniter, a liquid inlet pipe, a cracking coil pipe, a second flame pipe, a third flame pipe, a first air inlet pipe, and a second air inlet pipe. One end of the flame jet tube is open. The cracking coil pipe and the third flame pipe are located inside the flame jet tube. One end of the cracking coil pipe is connected to the liquid inlet pipe, and the other end of the cracking coil pipe is connected to the reflux pipe. The other end of the reflux pipe is connected to the steam drum. The steam drum and the third flame pipe are connected through the second flame pipe. The end of the third flame pipe away from the second flame pipe faces the cracking coil pipe, and is used to spray fire towards the open end of the flame jet tube and heat the cracking coil pipe. One end of the first flame pipe is connected to a spray pipe and the first air inlet pipe, and is provided with an igniter. The other end of the first flame pipe extends into the flame jet tube and faces the cracking coil pipe, and is used to spray fire towards the open end of the flame jet tube and heat the cracking coil pipe; The sealed end of the flame jet tube is connected to the second air inlet pipe.

2. The methanol cracking burner according to claim 1, wherein, There are multiple third flame pipes, and they are centrally symmetrically distributed around the central axis of the cracking coil pipe at the sealed end of the flame jet tube. Each third flame pipe is internally connected to the steam drum through a second flame pipe. The flame sprayed by the third flame pipe penetrates through the inside of the cracking coil pipe, and the central axis of the cracking coil pipe coincides with the central axis of the flame jet tube.

3. The methanol cracking burner according to claim 1, characterized in that, The liquid inlet pipe penetrates through the steam drum.

4. The methanol cracking burner according to claim 3, wherein A circular pipe coaxial with the steam drum is arranged inside the steam drum, and both ends of the circular pipe are connected to the liquid inlet pipe; The steam drum and the flame jet tube are coaxial.

5. The methanol cracking burner according to claim 2, characterized in that, The first flame pipe penetrates through the steam drum, and the first flame pipe, the steam drum, and the flame jet tube are coaxial; The flame sprayed by the first flame pipe penetrates through the inside of the cracking coil pipe.

6. The methanol cracking burner according to claim 5, characterized in that, An annular spray pipe is arranged inside the steam drum. The annular spray pipe is tightly sleeved on the first flame pipe and is coaxial with the first flame pipe. Multiple centrally symmetrically distributed spray holes are arranged at one end of the annular spray pipe away from the second flame pipe. One end of the reflux pipe extends into the steam drum and is connected to the annular spray pipe.

7. The methanol cracking burner according to claim 6, wherein, A coaxial cone is tightly sleeved on the first flame pipe inside the steam drum. The cone faces the spray holes, and the gas sprayed from the spray holes flows smoothly along the conical surface of the cone; The steam drum is cylindrical. The second flame pipe is located at the lower end face of the inner wall of the steam drum. The bottom surface of the cone closely adheres to the upper end face of the inner wall of the steam drum. Coaxial guide rings are fixedly installed on the upper and lower end faces of the inner wall of the steam drum. The outer circumferential surface of the guide ring closely adheres to the circumferential surface of the inner wall of the steam drum, and the axial two ends of the inner side surface of the guide ring are smoothly connected to the end face and the circumferential surface of the inner wall of the steam drum.

8. The methanol cracking burner according to claim 1, characterized in that, One end of the flame jet tube is detachably and fixedly installed with a mounting plate, and one end of the flame jet tube is sealed through the mounting plate.

9. The methanol cracking burner according to claim 8, wherein, The steam drum and the mounting plate are arranged at intervals; The second flame pipe, the liquid inlet pipe, and the reflux pipe all penetrate through the mounting plate and are hermetically and fixedly connected to the mounting plate.

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