A waste heat boiler catalytic cracking pipeline arrangement structure

Abstract

The utility model discloses a kind of waste heat boiler catalytic cracking pipeline arrangement structure, comprising: high temperature butterfly valve, the top of the high temperature butterfly valve is provided with starting valve port, one side of the high temperature butterfly valve is fixedly connected with arrangement pipeline, the surface of the arrangement pipeline is provided with a plurality of shock-absorbing components for shock-absorbing installation, the inner wall of the shock-absorbing component is provided with heat compensation component for auxiliary heat compensation, the other end of the arrangement pipeline is provided with induced draft fan, the vibration generated by arrangement pipeline is slowed down in use process by the structure of shock-absorbing component, the stability of shock-absorbing component whole is guaranteed using the triangle structure of shock-absorbing base cooperation triangular support frame, the vibration of lower mounting ring connected by hydraulic damper cooperation first shock-absorbing spring shock-absorbing plate connection is damped and absorbed and released, the installation stability of foundation is carried out using the shock-absorbing effect of this kind of installation stable cooperation hydraulic damper and first shock-absorbing spring, and the service life of arrangement pipeline is improved.

Description

Technical Field

[0001] This utility model relates to the field of waste heat boiler catalytic cracking pipeline technology, specifically a waste heat boiler catalytic cracking pipeline layout structure. Background Technology

[0002] Waste heat boilers are important energy-saving devices. They do not directly burn fuel, but instead utilize the waste heat from high-temperature exhaust gases generated in industrial processes (such as metallurgy, chemical industry, and cement kilns) to heat water, producing steam or hot water. This steam can be used to drive generator sets for power generation, heating, or to power mechanical equipment, thereby converting waste heat that would otherwise be released into the atmosphere into usable energy, significantly improving the overall energy utilization rate and reducing energy consumption and production costs.

[0003] Catalytic cracking is one of the core processes in petroleum refining. It primarily uses high temperatures and catalysts to crack heavy oils (such as atmospheric residue and vacuum gas oil). Its purpose is to efficiently convert large hydrocarbon molecules into higher-value light oil products, such as high-octane gasoline, liquefied petroleum gas (LPG), and important chemical feedstocks like propylene, while also producing some diesel fuel components. This unit plays a crucial role in optimizing product mix, improving light oil yield, and enhancing refinery economic efficiency.

[0004] However, existing technologies still have significant shortcomings, such as:

[0005] The waste heat boiler and catalytic cracking unit are interconnected by pipelines to transport high-temperature flue gas and combustibles. During the transportation process, the pipelines absorb a large amount of heat, which causes thermal expansion. This thermal expansion effect can lead to cracking and tearing of the pipelines. Furthermore, the induced draft of the fan causes vibration in the pipelines, further reducing their overall service life. To address this, we propose a pipeline layout structure for the waste heat boiler catalytic cracking unit. Utility Model Content

[0006] The purpose of this invention is to provide a waste heat boiler catalytic cracking pipeline layout structure to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A waste heat boiler catalytic cracking pipeline layout structure includes: a high-temperature butterfly valve, the top of which is provided with an activation valve port, and a layout pipeline fixedly connected to one side of the high-temperature butterfly valve. The surface of the layout pipeline is provided with multiple vibration damping components for vibration damping installation, and the inner wall of the vibration damping components is provided with a heat compensation component for auxiliary heat compensation.

[0009] An induced draft fan is installed at the other end of the ductwork. A fixed base for stable installation is fixedly connected to the bottom of the induced draft fan, and a chimney is fixedly connected to the top of the induced draft fan.

[0010] Preferably, the vibration damping assembly includes a vibration damping base disposed at the bottom of the arranged pipe, triangular support frames are fixedly connected to the top two sides of the vibration damping base, an mounting frame is fixedly connected to the top of the vibration damping base, and a reinforcing plate is fixedly connected between multiple triangular support frames, the reinforcing plate being fixedly connected to the top of the mounting frame.

[0011] Preferably, multiple hydraulic dampers are fixedly connected to both sides of the top of the reinforcing plate, a connecting slope plate is fixedly connected to the top of the hydraulic damper, and a first shock-absorbing spring is fixedly connected between the connecting slope plate and the hydraulic damper.

[0012] Preferably, each of the multiple connecting slope plates is fixedly connected to a lower mounting ring at its top, and an upper mounting ring is provided at the top of the lower mounting ring. Mounting screws are provided between the two sides of the lower mounting ring and the upper mounting ring.

[0013] Preferably, the heat compensation assembly includes a plurality of elastic mounting sleeves fixed to the inner walls of the upper mounting ring and the lower mounting ring, and the opposite sides of the plurality of elastic mounting sleeves are provided with a heat-resistant coating.

[0014] Preferably, the inner wall of the elastic mounting sleeve is fixedly connected with a damping sponge, and the inner wall of the damping sponge is provided with a plurality of evenly distributed second shock-absorbing springs.

[0015] Preferably, the inner wall of the pipeline is fixedly connected with a fire-resistant lining, which is made of a multi-material composite material.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The vibration damping component reduces the vibration generated by the pipeline during use. The vibration damping base, combined with the triangular structure of the triangular support frame, ensures the overall stability of the damping component. The mounting bracket and the inner support structure of the reinforcing plate further strengthen the triangular support frame. The reinforcing plate provides bottom stability for the hydraulic damper. The hydraulic damper, in conjunction with the first damping spring, dampens and absorbs the vibration of the lower mounting ring connected to the slope plate. The lower mounting ring, with mounting screws, is used to install the upper mounting ring, stabilizing the surface of the pipeline. This installation stability, combined with the damping effect of the hydraulic damper and the first damping spring, ensures foundation installation stability and extends the service life of the pipeline.

[0018] 2. The structure of the thermal compensation component, in conjunction with the vibration damping component, effectively curbs thermal expansion of the pipeline. While the upper and lower mounting rings stabilize the pipeline surface, the elastic mounting sleeve between them provides a range of motion for the pipeline during thermal expansion. Under the combined action of the damping spring and the second vibration damping spring, the expansion is reduced and reset. This structure further enhances the vibration damping effect on the pipeline surface, reducing the impact of vibration. The heat-resistant coating is made of lightweight refractory castable, which helps improve the overall heat resistance of the thermal compensation component during use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a disassembled schematic diagram of the overall structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the shock absorption component in the structure of this utility model;

[0022] Figure 4 This is a disassembly diagram of the shock-absorbing component in the structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the thermal compensation component in the structure of this utility model.

[0024] In the diagram: 1. High-temperature butterfly valve; 2. Start valve port; 3. Piping arrangement; 4. Fire-resistant lining; 5. Vibration damping assembly; 501. Vibration damping base; 502. Triangular support frame; 503. Mounting bracket; 504. Reinforcing plate; 505. Hydraulic damper; 506. First damping spring; 507. Connecting slope plate; 508. Lower mounting ring; 509. Upper mounting ring; 510. Mounting screw; 6. Thermal compensation assembly; 601. Elastic mounting sleeve; 602. Damping sponge; 603. Second damping spring; 604. Heat-resistant coating; 7. Exhaust fan; 8. Fixed base; 9. Chimney. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-5 This utility model provides a technical solution:

[0027] A waste heat boiler catalytic cracking pipeline layout structure includes: a high temperature butterfly valve 1, a start valve port 2 is provided on the top of the high temperature butterfly valve 1, a layout pipeline 3 is fixedly connected to one side of the high temperature butterfly valve 1, a plurality of shock-absorbing components 5 for shock-absorbing installation are provided on the surface of the layout pipeline 3, and a heat compensation component 6 for auxiliary heat compensation is provided on the inner wall of the shock-absorbing component 5.

[0028] An induced draft fan 7 is installed at the other end of the duct 3. A fixed base 8 for stable installation is fixedly connected to the bottom of the induced draft fan 7, and a chimney 9 is fixedly connected to the top of the induced draft fan 7.

[0029] In this embodiment, the high-temperature butterfly valve 1 is connected to the flue gas outlet of the catalytic cracking unit. Together with the start-up valve 2, it can effectively cut off the passing flue gas or combustibles and regulate the flow rate of the flue gas. The pipeline 3 can transport combustibles and flue gas. Together with the induced draft fan 7, the flue gas is introduced into the preheating boiler connection part at the chimney 9 to complete the basic flue gas transmission. The fixed base 8 can help install and fix the induced draft fan 7. While transporting flue gas and combustibles, the shock-absorbing component 5 and the thermal compensation component 6 can be used to dampen the pipeline 3 and prevent the pipeline from being damaged by thermal expansion, thereby further improving the service life of the pipeline 3.

[0030] The vibration damping assembly 5 includes a vibration damping base 501 disposed at the bottom of the pipe 3. Triangular support frames 502 are fixedly connected to the top two sides of the vibration damping base 501. A mounting frame 503 is fixedly connected to the top of the vibration damping base 501. A reinforcing plate 504 is fixedly connected between multiple triangular support frames 502. The reinforcing plate 504 is fixedly connected to the top of the mounting frame 503.

[0031] In this embodiment, the shock absorption component 5 uses the shock absorption base 501 to provide bottom support for the entire device, and works with the triangular support frames 502 on both sides to stabilize the foundation installation. The mounting frame 503 can work with the reinforcing plate 504 to further reinforce the fixation between the triangular support frames 502, and at the same time provide a solid base for the installation of the hydraulic damper 505.

[0032] Multiple hydraulic dampers 505 are fixedly connected to both sides of the top of the reinforcing plate 504. A connecting slope plate 507 is fixedly connected to the top of the hydraulic damper 505. A first shock-absorbing spring 506 is fixedly connected between the connecting slope plate 507 and the hydraulic damper 505.

[0033] In this embodiment, the connecting slope plate 507 connects to the lower mounting ring 508. When the lower mounting ring 508 moves due to the vibration of the pipeline, it can transmit the impact force to the hydraulic damper 505 and the first shock-absorbing spring 506. The structure of the hydraulic damper 505 and the first shock-absorbing spring 506 is used to perform basic shock absorption, reduce the impact of vibration on the pipeline 3, and further improve the service life of the pipeline 3.

[0034] The top of each of the multiple connecting slope plates 507 is fixedly connected with a lower mounting ring 508, and an upper mounting ring 509 is provided on the top of the lower mounting ring 508. Mounting screws 510 are provided between the two sides of the lower mounting ring 508 and the upper mounting ring 509.

[0035] In this embodiment, the lower mounting ring 508 works in conjunction with the upper mounting ring 509 to stably install the surface of the pipe 3. The fixing stress of the upper and lower mounting rings and the mounting screws 510 is used to limit the thermal expansion effect that may occur on the surface of the pipe 3, thereby reducing the impact of thermal expansion on the pipe 3 and further improving the functionality and safety of the device.

[0036] The thermal compensation assembly 6 includes multiple elastic mounting sleeves 601 fixed to the inner walls of the upper mounting ring 509 and the lower mounting ring 508, and heat-resistant coatings 604 are provided on the opposite sides of the multiple elastic mounting sleeves 601.

[0037] In this embodiment, the thermal compensation component 6 can use the elastic mounting sleeve 601 and the heat-resistant coating 604 made of lightweight refractory castable to work with the lower mounting ring 508 and the upper mounting ring 509 to make direct and tight contact with the pipeline 3. The elasticity of the elastic mounting sleeve 601 is used to shrink and fill the corresponding space when the pipeline 3 undergoes thermal expansion. This, together with the heat-resistant coating 604, secures the pipeline 3 and reduces the impact of thermal expansion on the pipeline 3.

[0038] The inner wall of the elastic mounting sleeve 601 is fixedly connected to a damping sponge 602, and the inner wall of the damping sponge 602 is provided with a plurality of evenly distributed second shock-absorbing springs 603.

[0039] In this embodiment, the damping sponge 602, together with the second shock-absorbing spring 603, can absorb and release the impact force when the pipeline 3 experiences thermal expansion and vibration. This reduces the damage of thermal expansion to the pipeline 3 while providing shock absorption, thereby further improving the overall service life of the pipeline 3.

[0040] The inner wall of the pipeline 3 is fixedly connected with a fire-resistant lining 4, which is made of a multi-material composite material.

[0041] In this embodiment, the refractory lining 4 is made of a combination of multiple materials. The refractory lining 4 formed by ceramic and bauxite clinker improves the heat resistance of the interior of the pipeline 3 to combustibles and high-temperature flue gas, thereby further improving the functionality and safety of the device.

[0042] Working principle: The entire unit is first connected to the catalytic cracking unit through a high-temperature butterfly valve 1. The high-temperature butterfly valve 1, in conjunction with the start-up valve 2, restricts or shuts off the flow of flue gas and combustibles. The discharged flue gas is transported through the discharge pipe 3 under the action of the induced draft fan 7. At the same time, with the fixing action of the fixed base 8 and the chimney 9, the flue gas is discharged to the waste heat boiler section, thus completing the basic flue gas discharge. Meanwhile, the combustibles and flue gas are reinforced and heat-resistant under the action of the refractory lining 4, thereby further improving the functionality of the unit.

[0043] During the transportation of flue gas, when the high temperature causes thermal expansion on the surface of the distribution pipe 3, the upper mounting ring 509 and the lower mounting ring 508, with the help of the mounting screws 510, can be used to install and stabilize the distribution pipe 3, preventing cracking due to thermal expansion. At the same time, the operation of the induced draft fan 7 will cause the distribution pipe 3 to vibrate while transporting flue gas and combustibles. At this time, the connecting slope plate 507 at the bottom of the lower mounting ring 508, together with the first shock-absorbing spring 506 and the hydraulic damper 505, can complete the basic vibration reduction. During the vibration reduction process, the shock-absorbing base 501 and the triangular support frame 502 are used to stabilize the bottom. When stable, the mounting frame 503 and the reinforcing plate 504 can reinforce the triangular support frame 502 and the shock-absorbing base 501, thereby further improving the functionality and safety of the device.

[0044] While the shock-absorbing component 5 assists in stabilizing and reducing vibration of the pipe 3, the elastic mounting sleeve 601 and the heat-resistant coating 604 of the heat compensation component 6 directly contact the pipe 3. During installation using the elastic mounting sleeve 601, the elastic material itself can contract and compensate for thermal expansion when subjected to thermal expansion. The heat-resistant coating 604 can increase the heat resistance of the contact surface of the elastic mounting sleeve 601. The damping sponge 602, together with the second shock-absorbing spring 603, can further reduce the vibration of the pipe 3 during use, thereby further improving the overall shock absorption effect and safety performance of the device, and also increasing the service life of the pipe 3.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste heat boiler catalytic cracking pipeline layout structure, comprising a high-temperature butterfly valve (1), wherein the top of the high-temperature butterfly valve (1) is provided with an activation valve port (2), and a layout pipeline (3) is fixedly connected to one side of the high-temperature butterfly valve (1), characterized in that: The surface of the pipeline (3) is provided with a plurality of shock-absorbing components (5) for shock absorption installation, and the inner wall of the shock-absorbing components (5) is provided with a heat compensation component (6) for auxiliary heat compensation. The other end of the duct (3) is provided with an exhaust fan (7), the bottom of the exhaust fan (7) is fixedly connected to a fixed base (8) for stable installation, and the top of the exhaust fan (7) is fixedly connected to a chimney (9).

2. The waste heat boiler catalytic cracking pipeline layout structure according to claim 1, characterized in that: The shock-absorbing assembly (5) includes a shock-absorbing base (501) disposed at the bottom of the arrangement pipe (3). Triangular support frames (502) are fixedly connected to the top two sides of the shock-absorbing base (501). An installation frame (503) is fixedly connected to the top of the shock-absorbing base (501). A reinforcing plate (504) is fixedly connected between multiple triangular support frames (502). The reinforcing plate (504) is fixedly connected to the top of the installation frame (503).

3. The waste heat boiler catalytic cracking pipeline layout structure according to claim 2, characterized in that: Multiple hydraulic dampers (505) are fixedly connected to both sides of the top of the reinforcing plate (504). A connecting slope plate (507) is fixedly connected to the top of the hydraulic damper (505). A first shock-absorbing spring (506) is fixedly connected between the connecting slope plate (507) and the hydraulic damper (505).

4. The waste heat boiler catalytic cracking pipeline layout structure according to claim 3, characterized in that: Each of the multiple connecting ramps (507) has a lower mounting ring (508) fixedly connected to its top. The top of the lower mounting ring (508) is provided with an upper mounting ring (509). Mounting screws (510) are provided between the two sides of the lower mounting ring (508) and the upper mounting ring (509).

5. The waste heat boiler catalytic cracking pipeline layout structure according to claim 4, characterized in that: The thermal compensation component (6) includes a plurality of elastic mounting sleeves (601) fixed to the inner walls of the upper mounting ring (509) and the lower mounting ring (508), and each of the plurality of elastic mounting sleeves (601) is provided with a heat-resistant coating (604) on the opposite sides.

6. The waste heat boiler catalytic cracking pipeline layout structure according to claim 5, characterized in that: The inner wall of the elastic mounting sleeve (601) is fixedly connected with a damping sponge (602), and the inner wall of the damping sponge (602) is provided with a plurality of evenly distributed second shock-absorbing springs (603).

7. The waste heat boiler catalytic cracking pipeline layout structure according to claim 1, characterized in that: The inner wall of the pipeline (3) is fixedly connected with a fire-resistant lining (4), which is made of a multi-material composite material.

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