Premixed combustion device of cracking furnace

By introducing mixing components and drainage components into the cracking furnace, the problems of fuel accumulation and ash blockage are solved, sufficient combustion and smooth discharge are achieved, and the operating efficiency of the cracking furnace is improved.

CN223397675UActive Publication Date: 2025-09-30HUBEI TONGMINGHUI NEW MATERIALS TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202422456080.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-11
Publication Date
2025-09-30
Estimated Expiration
2034-10-11

AI Technical Summary

Technical Problem

In existing cracking furnaces, fuel is easily accumulated during combustion, resulting in insufficient combustion, and ash after combustion is easily blocked at the discharge port, causing inconvenience in discharge.

Method used

A premixed combustion device for a cracking furnace was designed, which includes a mixing component and a guiding component. The mixing blades and the guiding blades are driven by a driving mechanism and a rotating rod to prevent fuel accumulation and guide ash, ensuring sufficient combustion and smooth discharge.

Benefits of technology

The complete combustion of fuel and the smooth discharge of ash are achieved, fuel waste and blockage of the discharge port are avoided, and the operation efficiency of the cracking furnace is improved.

✦ Generated by Eureka AI based on patent content.

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Abstract

The premixing combustion device comprises a cracking furnace body, supporting legs are fixedly connected to the two sides of the bottom end of the cracking furnace body, a supporting plate is fixedly connected to the right sides of the supporting legs, a material mixing assembly is installed at the top end of the supporting plate, and the material mixing assembly comprises a supporting table, a driving mechanism, a first rotating rod and material mixing blades. A guiding assembly is arranged on one side of the supporting table and comprises a second rotating rod, a material guiding blade, a transmission belt and a transmission wheel, a discharging opening is formed in the bottom end of the cracking furnace body, and a sliding assembly is arranged at the discharging opening. The driving mechanism and the first rotating rod are arranged and matched with the material mixing blades, so that combustion materials can be scattered through the multiple material mixing blades after being poured in from the feeding pipe, and therefore the situation that the materials are stacked at one position, and consequently combustion is insufficient is prevented.
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Description

Technical Field

[0001] The utility model relates to the technical field of cracking furnaces, in particular to a premixed combustion device for a cracking furnace. Background Art

[0002] A cracking furnace is a device used to crack hydrocarbons. Requirements for a cracking furnace include: the ability to rapidly heat the reactants to 700-900°C to ensure equilibrium ethylene yields, ensuring heat supply and heat transfer; short medium residence time to minimize coke production during the cracking process; and suitable high-temperature-resistant materials. Depending on the raw materials used for cracking and the method used to generate the heat required, different cracking furnace types are used. Commonly used include regenerative cracking furnaces, sand furnaces, and tubular cracking furnaces. The tubular cracking furnace is the most widely used and technologically mature.

[0003] At present, when most cracking furnaces are burning, ash will remain in the furnace after the fuel is burned, and the ash will accumulate and clog the discharge port, which is inconvenient for subsequent discharge. In addition, when the fuel is poured into the furnace for combustion, the fuel is easily accumulated in one place in the furnace, resulting in incomplete combustion and fuel waste. Therefore, it is necessary to design a cracking furnace premixed combustion device that can effectively disperse the ash and effectively prevent the discharge port from being clogged to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a premixed combustion device for a cracking furnace, which is used to solve the problems raised by the above-mentioned background technology.

[0005] The utility model discloses a premixed combustion device for a cracking furnace, comprising a cracking furnace body, wherein both sides of the bottom end of the cracking furnace body are fixedly connected with support legs, the right side of the support legs is fixedly connected with a support plate, a mixing assembly is installed on the top end of the support plate, the mixing assembly comprises a support platform, a driving mechanism, a first rotating rod and a mixing blade, a dredging assembly is arranged on one side of the support platform, the dredging assembly comprises a second rotating rod, a guide blade, a transmission belt and a transmission wheel, a discharge port is opened at the bottom end of the cracking furnace body, and a sliding assembly is arranged at the discharge port; the sliding assembly comprises a second handle, a sliding plate, a limit plate and a guide slope, a feed pipe is arranged at the middle part of the top end of the cracking furnace body, and an air inlet pipe and an air outlet pipe are respectively connected to one side and the top end of the cracking furnace body.

[0006] As a further improvement of the present invention, one end of the air inlet pipe away from the cracking furnace body is connected to the external combustion mechanism, and the air outlet pipe and the air inlet pipe are both designed in an L-shaped structure.

[0007] As a further improvement of the present invention, the feed pipe is communicated with the inner cavity of the cracking furnace body and a sealing plug is threadedly connected to the top end thereof, and a first handle is fixedly connected to the top end of the sealing plug.

[0008] As a further improvement of the present invention, the bottom end of the support platform is fixedly connected to the top end of the support plate, and the driving mechanism is fixedly installed on the top end of the support platform through a fixing ring.

[0009] As a further improvement of the present invention, one end of the first rotating rod is connected to the output shaft of the driving mechanism and the other end passes through the cracking furnace body and is horizontally arranged inside the cracking furnace body. There are several mixing leaves and they are all fixedly connected to the outer surface of the first rotating rod.

[0010] As a further improvement of the present invention, one end of the second rotating rod is rotatably connected to the support platform and the other end passes through the cracking furnace body and is horizontally arranged inside the cracking furnace body. There are several guide blades and they are all fixedly connected to the outer surface of the second rotating rod.

[0011] As a further improvement of the present invention, there are two transmission wheels, which are fixedly connected to the outer surfaces of the first rotating rod and the second rotating rod respectively, and the transmission belt is arranged between the two transmission wheels.

[0012] As a further improvement of the present invention, the sliding plate is inserted into the inner wall of the discharge port from the side of the cracking furnace body away from the driving mechanism, the limiting plate is fixedly connected to the side of the sliding plate away from the driving mechanism, and the second handle is fixedly connected to the side of the limiting plate away from the sliding plate.

[0013] As a further improvement of the present invention, the guide slope is integrally formed at the bottom of the inner cavity of the cracking furnace body near both sides of the discharge port, and the guide slopes on both sides are inclined toward the discharge port.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. The utility model provides a driving mechanism and a first rotating rod, in conjunction with mixing blades, so that after the combustion material is poured from the feed pipe, it can be dispersed by multiple mixing blades, thereby preventing the material from accumulating in one place and causing incomplete combustion;

[0016] 2. At the same time, the transmission belt and transmission wheel are used in conjunction with the second rotating rod and the guide blade, so that when discharging, the second rotating rod can be driven to rotate by the transmission belt and transmission wheel, and the ash accumulated at the discharge port can be stirred in conjunction with the guide blade, thereby preventing blockage during ash discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1This is a schematic diagram of the overall three-dimensional front view structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the utility model when viewed from above;

[0020] Figure 3 This is a schematic diagram of the overall three-dimensional side sectional structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the overall front view structure of the utility model.

[0022] In the figure: 01, cracking furnace body; 011, supporting foot; 012, air inlet pipe; 013, air outlet pipe; 02, feed pipe; 021, sealing plug; 022, first handle; 03, support plate; 031, support platform; 032, driving mechanism; 033, first rotating rod; 034, mixing blade; 04, second rotating rod; 041, guide blade; 042, transmission belt; 043, transmission wheel; 05, second handle; 051, sliding plate; 052, limit plate; 053, discharge port; 054, guide slope. DETAILED DESCRIPTION

[0023] The following diagrams illustrate various embodiments of the present invention. For clarity, many physical details will be included in the following description. However, it should be understood that these physical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these physical details are not essential. Furthermore, to simplify the illustrations, some commonly used structures and components are depicted in a simplified schematic manner.

[0024] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0025] In the description of this technology, it should also be noted that, unless otherwise specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this technology based on the specific circumstances.

[0026] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0027] See also Figure 1-4 The utility model includes a cracking furnace body 01, and support legs 011 are fixedly connected to both sides of the bottom end of the cracking furnace body 01. A support plate 03 is fixedly connected to the right side of the support leg 011. A mixing component is installed on the top of the support plate 03, and the mixing component includes a support platform 031, a driving mechanism 032, a first rotating rod 033 and a mixing blade 034. A dredging component is provided on one side of the support platform 031, and the dredging component includes a second rotating rod 04, a guide blade 041, a transmission belt 042 and a transmission wheel 043. A discharge port 053 is opened at the bottom end of the cracking furnace body 01, and a sliding component is provided at the discharge port 053; the sliding component includes a second handle 05, a sliding plate 051, a limit plate 052 and a guide slope 054. A feed pipe 02 is provided in the middle of the top end of the cracking furnace body 01, and an air inlet pipe 012 and an air outlet pipe 013 are respectively connected to one side and the top end of the cracking furnace body 01.

[0028] See also Figure 1 and Figure 2 In this embodiment, in order to better introduce the external high-temperature gas into the cracking furnace body 01, the end of the inlet pipe 012 away from the cracking furnace body 01 is connected to the external combustion mechanism, and the outlet pipe 013 and the inlet pipe 012 are both designed in an L-shaped structure;

[0029] The feed pipe 02 is connected to the inner cavity of the cracking furnace body 01 and has a sealing plug 021 threaded on its top. The top of the sealing plug 021 is fixedly connected to a first handle 022 for the convenience of the staff in pouring the fuel to be cracked into the cracking furnace body 01.

[0030] When cracking is required, the material to be cracked is poured into the feed pipe 02, and then the first handle 022 is grasped to screw the sealing plug 021 into the feed pipe 02 to seal the top opening of the feed pipe 02. The high-temperature gas enters the cracking furnace body 01 from the inlet pipe 012 to perform high-temperature cracking on the material. Part of the cracked material is discharged from the outlet pipe 013 along with the high-temperature gas, and part remains at the bottom of the cracking furnace cavity.

[0031] See also Figure 1 and Figure 3 It should be noted that in order to better mix and stir the materials and prevent them from piling up in one place, which would cause incomplete combustion, the bottom end of the support platform 031 is fixedly connected to the top of the support plate 03, and the driving mechanism 032 is fixedly mounted on the top of the support platform 031 through a fixing ring. The driving mechanism 032 is a stepping motor.

[0032] One end of the first rotating rod 033 is connected to the output shaft of the driving mechanism 032 and the other end passes through the cracking furnace body 01 and is horizontally arranged inside the cracking furnace body 01. There are multiple mixing blades 034 and they are all fixedly connected to the outer surface of the first rotating rod 033.

[0033] Before pouring the material from the feed pipe 02, the driving mechanism 032 is first started, and the driving mechanism 032 is used to drive the first rotating rod 033 and the mixing blade 034 to rotate, so as to stir and mix the material poured from the feed pipe 02, so that the poured material can be looser and the material can be burned more fully.

[0034] See also Figure 1 and Figure 3 Specifically, in order to better guide the ash residue accumulated at the discharge port 053 and prevent it from clogging, one end of the second rotating rod 04 is rotatably connected to the support platform 031, and the other end penetrates the cracking furnace body 01 and is horizontally arranged inside the cracking furnace body 01. There are multiple guide blades 041, all of which are fixedly connected to the outer surface of the second rotating rod 04.

[0035] There are two transmission wheels 043 , which are fixedly connected to the outer surfaces of the first rotating rod 033 and the second rotating rod 04 , respectively. The transmission belt 042 is sleeved between the two transmission wheels 043 .

[0036] When the discharge port 053 is discharging ash, the driving mechanism 032 can be started, and the driving mechanism 032 can be used to drive the transmission wheel 043 and the transmission belt 042 to rotate, thereby driving the second rotating rod 04 and the guide blade 041 to rotate, and the guide blade 041 is used to disperse the ash accumulated at the discharge port 053, thereby preventing it from accumulating and clogging the discharge port 053, so that the ash can be discharged better.

[0037] See also Figure 2 and Figure 3 It should be noted that, in order to better control the switch at the discharge port 053, the sliding plate 051 is inserted into the inner wall of the discharge port 053 from the side of the cracking furnace body 01 away from the drive mechanism 032, the limiting plate 052 is fixedly connected to the side of the sliding plate 051 away from the drive mechanism 032, and the second handle 05 is fixedly connected to the side of the limiting plate 052 away from the sliding plate 051;

[0038] The material guiding slope 054 is integrally formed at the bottom of the inner cavity of the cracking furnace body 01 near the two sides of the discharge port 053 , and the material guiding slopes 054 on both sides are inclined toward the direction of the discharge port 053 .

[0039] When the ashes need to be discharged, first grasp the second handle 05 and pull out the sliding plate 051 to open the discharge port 053 for discharge. The setting of the guide slope 054 makes the ashes slide to a position close to the discharge port 053, making discharge more convenient.

[0040] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. A cracking furnace premix combustion device, comprising a cracking furnace body (01), characterized in that: Both sides of the bottom end of the cracking furnace body (01) are fixedly connected to support legs (011), the right side of the support legs (011) is fixedly connected to a support plate (03), the top of the support plate (03) is equipped with a mixing assembly, the mixing assembly includes a support platform (031), a driving mechanism (032), a first rotating rod (033) and a mixing blade (034), a dredging assembly is provided on one side of the support platform (031), the dredging assembly includes a second rotating rod (04), a guide blade (041), a transmission belt (042) and a transmission wheel (043), a discharge port (053) is provided at the bottom end of the cracking furnace body (01), and a sliding assembly is provided at the discharge port (053); The sliding assembly includes a second handle (05), a sliding plate (051), a limiting plate (052) and a material guide slope (054). A feed pipe (02) is provided at the middle of the top of the cracking furnace body (01). An air inlet pipe (012) and an air outlet pipe (013) are respectively connected to one side and the top of the cracking furnace body (01).

2. A cracking furnace premix combustion device according to claim 1, characterized in that: One end of the air inlet pipe (012) away from the cracking furnace body (01) is connected to an external combustion mechanism, and the air outlet pipe (013) and the air inlet pipe (012) are both designed in an L-shaped structure.

3. A cracking furnace premix combustion device according to claim 1, characterized in that: The feed pipe (02) is in communication with the inner cavity of the cracking furnace body (01) and has a sealing plug (021) threadedly connected to its top end. The top end of the sealing plug (021) is fixedly connected to a first handle (022).

4. A cracking furnace premix combustion device according to claim 1, characterized in that: The bottom end of the support platform (031) is fixedly connected to the top end of the support plate (03), and the driving mechanism (032) is fixedly mounted on the top end of the support platform (031) via a fixing ring.

5. A cracking furnace premix combustion device according to claim 1, characterized in that: One end of the first rotating rod (033) is connected to the output shaft of the driving mechanism (032), and the other end passes through the cracking furnace body (01) and is horizontally arranged inside the cracking furnace body (01). There are a plurality of mixing blades (034) and they are all fixedly connected to the outer surface of the first rotating rod (033).

6. A cracking furnace premix combustion device according to claim 1, characterized in that: One end of the second rotating rod (04) is rotatably connected to the support platform (031) and the other end passes through the cracking furnace body (01) and is horizontally arranged inside the cracking furnace body (01). There are a plurality of guide blades (041) and they are all fixedly connected to the outer surface of the second rotating rod (04).

7. A cracking furnace premix combustion device according to claim 1, characterized in that: There are two transmission wheels (043) which are respectively fixedly connected to the outer surfaces of the first rotating rod (033) and the second rotating rod (04); the transmission belt (042) is sleeved between the two transmission wheels (043).

8. The premixed combustion device for a cracking furnace according to claim 1, characterized in that: The sliding plate (051) is inserted into the inner wall of the discharge port (053) from the side of the cracking furnace body (01) away from the driving mechanism (032), the limiting plate (052) is fixedly connected to the side of the sliding plate (051) away from the driving mechanism (032), and the second handle (05) is fixedly connected to the side of the limiting plate (052) away from the sliding plate (051).

9. A cracking furnace premix combustion device according to claim 1, characterized in that: The material guide slope (054) is integrally formed at a position on both sides of the bottom of the inner cavity of the cracking furnace body (01) close to the discharge port (053), and the material guide slopes (054) on both sides are inclined toward the discharge port (053).