A heating device for dehydrogenation of isobutane
By incorporating a preheating and stirring structure into the isobutane dehydrogenation heating device, the problem of heat loss after isobutane heating is solved, thereby improving reaction efficiency and speed and reducing energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGYING TONGSHENG PETROCHEMICAL CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-03
AI Technical Summary
Existing isobutane dehydrogenation heating devices directly discharge isobutane after heating for cooling and subsequent reactions, resulting in heat loss, increased energy consumption, and the unheated isobutane needs to absorb more heat, affecting reaction efficiency.
A heating device was designed to preheat isobutane and utilize its residual heat by using a plug, a compression spring, a connecting conduit, and a spiral conduit. The device also utilizes a rotating shaft, rotating blades, and a heating coil to uniformly heat and stir the isobutane, thereby improving reaction efficiency.
Preheating and uniform heating improve the speed and efficiency of isobutane dehydrogenation reaction, reduce heat loss, and lower energy consumption.
Smart Images
Figure CN224442990U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of chemical production technology, specifically a heating device for isobutane dehydrogenation. Background Technology
[0002] Isobutane dehydrogenation is an important chemical reaction process, mainly used to produce isobutene. Isobutene is an important chemical raw material with wide applications in synthetic rubber, synthetic resin, pharmaceuticals, pesticides and other fields. As a strongly endothermic reaction, the heating device is one of the key pieces of equipment in the process of isobutane dehydrogenation, which provides the necessary heat to carry out the reaction at a suitable temperature.
[0003] Existing heating devices for isobutane dehydrogenation typically discharge and collect the isobutane directly after dehydrogenation, allowing it to cool before further reaction operations. This results in heat loss and increased overall energy consumption. Furthermore, direct heating of isobutane without preheating requires absorbing more heat, affecting the efficiency of the dehydrogenation reaction. Therefore, improvements are needed. Summary of the Invention
[0004] To overcome the above-mentioned defects, this utility model provides a heating device for isobutane dehydrogenation, which solves the problem that in existing heating devices for isobutane dehydrogenation, the isobutane after heating and dehydrogenation is generally discharged directly for collection until it is cooled before subsequent reaction operations, resulting in heat loss and increased overall energy consumption. At the same time, the direct heating and dehydrogenation of isobutane without preheating requires the absorption of more heat, which affects the efficiency of the heating and dehydrogenation reaction.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a heating device for isobutane dehydrogenation, comprising a heating cylinder, an installation groove at the top of the heating cylinder, six installation slide rods fixedly installed inside the installation groove, plugs slidably installed through the surfaces of the six installation slide rods, a compression spring sleeved on the surface of the installation slide rod at the top of the plug, a raw material cylinder fixedly installed on the surface of the heating cylinder, a connecting conduit connecting the top of the heating cylinder and the top of the raw material cylinder, a feeding valve connected to one side of the top of the raw material cylinder, a spiral pipe fixedly installed inside the raw material cylinder, and the end of the connecting conduit near the raw material cylinder passing through the top of the raw material cylinder and connecting to the spiral pipe, an outlet connected to the bottom of one side of the raw material cylinder, and the bottom end of the spiral pipe connecting to the outlet, a feeding hose connected to the top of one side of the raw material cylinder, a solenoid valve connected to the end of the feeding hose away from the raw material cylinder, and a feeding pipe connected to the end of the solenoid valve away from the feeding hose.
[0006] As a further embodiment of this utility model: a reaction tank is provided at the bottom of the heating cylinder, and a through groove is provided at the center of the top of the reaction tank. The reaction tank and the installation groove are connected through the through groove, and the bottom of the plug is engaged with the through groove.
[0007] As a further embodiment of this utility model: the feeding pipe passes through the heating cylinder and is inserted into the reaction tank, and the surface of the feeding pipe located at the bottom of the reaction tank is provided with multiple through holes.
[0008] As a further embodiment of this utility model: a mounting bracket is fixedly installed on the top of the inner wall of the reaction tank, and a rotating shaft is rotatably installed between the bottom of the reaction tank and the mounting bracket via a bearing, and multiple rotating blades are fixedly installed on the surface of the rotating shaft.
[0009] As a further embodiment of this utility model: a bevel gear one is fixedly installed at the bottom end of the rotating shaft, which extends through the reaction tank to the bottom of the heating cylinder; a rotating motor is fixedly installed on one side of the bottom of the heating cylinder; a bevel gear two is fixedly installed at the output end of the rotating motor, and the bevel gear two meshes with the bevel gear one.
[0010] As a further embodiment of this utility model: a heating coil is fixedly installed on the inner wall of the reaction tank, and a base frame is fixedly installed at the bottom of the heating cylinder.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0012] This heating device for isobutane dehydrogenation, through the installation of a plug, a compression spring, a connecting conduit, a spiral pipe, and a feed pipe, allows the isobutane inside the reaction tank to undergo heating and dehydrogenation. As the pressure inside the reaction tank gradually increases, it pushes up the plug, allowing the dehydrogenated isobutane to flow into the installation tank and then into the spiral pipe via the connecting conduit. This preheats the untreated isobutane in the raw material cylinder, improving the utilization rate of the residual heat after dehydrogenation. After the dehydrogenated isobutane is discharged from the channel inside the reaction tank, the compression spring's rebound causes the plug to press down and block the channel. This opens the solenoid valve, allowing the preheated isobutane from the raw material cylinder to be discharged into the reaction tank via the feed pipe for further heating and dehydrogenation. The preheating process before dehydrogenation raises the isobutane temperature closer to the reaction temperature, increasing the rate of the isobutane dehydrogenation reaction.
[0013] This heating device for isobutane dehydrogenation consists of a rotating shaft, rotating blades, a rotating motor, and a heating coil. After a suitable amount of preheated isobutane feedstock is injected into the reaction tank through the feed pipe, the heating coil is activated to heat the isobutane feedstock inside the reaction tank. At the same time, the rotating motor is activated to control the rotating shaft to drive the rotating blades to rotate inside the reaction tank, agitating the gaseous isobutane to flow inside the reaction tank. This promotes a uniform distribution of reactants and products in the isobutane dehydrogenation reaction, avoids excessively high local concentrations inside the reaction tank, and thus increases the isobutane dehydrogenation reaction rate. Attached Figure Description
[0014] Figure 1 This is a cross-sectional structural diagram of the present invention;
[0015] Figure 2 This is a cross-sectional view of the heating cylinder of this utility model;
[0016] Figure 3 This is a cross-sectional view of the raw material cylinder of this utility model;
[0017] In the diagram: 1. Heating cylinder; 2. Reaction tank; 3. Through groove; 4. Mounting groove; 5. Mounting slide bar; 6. Plug; 7. Compression spring; 8. Raw material cylinder; 9. Connecting conduit; 10. Feeding valve; 11. Spiral through pipe; 12. Discharge port; 13. Feeding hose; 14. Solenoid valve; 15. Feeding pipe; 16. Through hole; 17. Mounting frame; 18. Rotating shaft; 19. Rotating blade; 20. Bevel gear one; 21. Rotating motor; 22. Bevel gear two; 23. Heating coil; 24. Base frame. Detailed Implementation
[0018] The technical solution of this patent will be further described in detail below with reference to specific embodiments.
[0019] like Figure 1-3 As shown, this utility model provides a technical solution: a heating device for isobutane dehydrogenation, including a heating cylinder 1, a reaction tank 2 at the bottom of the heating cylinder 1, a through groove 3 at the center of the top of the reaction tank 2, and the reaction tank 2 and the mounting groove 4 are connected through the through groove 3, and the bottom of the plug 6 is engaged with the through groove 3. A heating coil 23 is fixedly installed on the inner wall of the reaction tank 2, and a base frame 24 is fixedly installed at the bottom of the heating cylinder 1. Through the through groove 3, after the isobutane raw material is put into the reaction tank 2, the heating coil 23 is activated to heat and dehydrogenate the isobutane raw material. The isobutane after the heating and dehydrogenation reaction in the reaction tank 2 flows into the mounting groove 4 from the through groove 3, and then is discharged from the mounting groove 4 through the connecting conduit 9.
[0020] The heating cylinder 1 has an installation groove 4 at the top. Six installation slide rods 5 are fixedly installed inside the installation groove 4. A plug 6 is slidably installed through the surface of the six installation slide rods 5. A compression spring 7 is sleeved on the surface of the installation slide rod 5 at the top of the plug 6. Because of the plug 6, the plug 6 is pressed into the through groove 3 under the rebound action of the compression spring 7, thus sealing the through groove 3. This ensures that after the isobutane put into the reaction tank 2 is dehydrogenated to a certain extent by heating, the pressure inside the reaction tank 2 increases and pushes up the plug 6, so that the isobutane that has been dehydrogenated by heating inside the reaction tank 2 is discharged.
[0021] A raw material cylinder 8 is fixedly installed on the surface of the heating cylinder 1. A connecting conduit 9 is provided between the top of the heating cylinder 1 and the top of the raw material cylinder 8. A feeding valve 10 is provided on one side of the top of the raw material cylinder 8. A spiral pipe 11 is fixedly installed inside the raw material cylinder 8. The end of the connecting conduit 9 near the raw material cylinder 8 passes through the top of the raw material cylinder 8 and connects with the spiral pipe 11. Isobutane raw material is injected into the raw material cylinder 8 through the spiral pipe 11 and the feeding valve 10. At the same time, the isobutane after heating and dehydrogenation is discharged from the connecting conduit 9 into the spiral pipe 11 and flows with the spiral pipe 11 inside the raw material cylinder 8 to preheat the isobutane raw material inside the raw material cylinder 8.
[0022] A discharge port 12 is connected to the bottom of one side of the raw material cylinder 8, and the bottom end of the spiral pipe 11 is connected to the discharge port 12. A feeding hose 13 is connected to the top of one side of the raw material cylinder 8. A solenoid valve 14 is connected to the end of the feeding hose 13 away from the raw material cylinder 8, and a feeding pipe 15 is connected to the end of the solenoid valve 14 away from the feeding hose 13. The feeding pipe 15 passes through the heating cylinder 1 and is inserted into the reaction tank 2. The surface of the feeding pipe 15 at the bottom of the reaction tank 2 has multiple through holes 16. Because of the feeding pipe 15, when the solenoid valve 14 is opened, the preheated isobutane raw material inside the raw material cylinder 8 is discharged into the reaction tank 2 through the feeding hose 13 and the feeding pipe 15. The isobutane raw material discharged from the feeding pipe 15 accumulates at the bottom of the reaction tank 2 to await heating and dehydrogenation.
[0023] A mounting bracket 17 is fixedly installed on the top of the inner wall of the reaction tank 2. A rotating shaft 18 is rotatably installed between the bottom of the reaction tank 2 and the mounting bracket 17 via a bearing. Multiple rotating blades 19 are fixedly installed on the surface of the rotating shaft 18. The bottom end of the rotating shaft 18 extends through the reaction tank 2 to the bottom of the heating cylinder 1, where a bevel gear 20 is fixedly installed. A rotating motor 21 is fixedly installed on one side of the bottom of the heating cylinder 1. A bevel gear 22 is fixedly installed at the output end of the rotating motor 21, and the bevel gear 22 meshes with the bevel gear 20. After the preheated isobutane is introduced into the reaction tank 2 via the rotating blades 19, the rotating motor 21 is started. Through the meshing of the bevel gear 22 and the bevel gear 20, the rotating shaft 18 is controlled to drive the rotating blades 19 to rotate, stirring the isobutane raw material inside the reaction tank 2 for flow heating, thereby improving the efficiency of isobutane heating and dehydrogenation.
[0024] The working principle of this utility model is as follows:
[0025] A suitable amount of isobutane is injected into the raw material cylinder 8 through the feeding valve 10. Simultaneously, the solenoid valve 14 is activated to guide the isobutane from the raw material cylinder 8 into the reaction tank 2 through the feeding pipe 15. The heating coil 23 is then connected to the power supply to begin heating. At the same time, the rotating motor 21 is activated to drive the rotating shaft 18 to rotate, causing the rotating blades 19 to stir the gaseous isobutane inside the reaction tank 2, thus heating and dehydrogenating the isobutane. During the heating and dehydrogenation process of the isobutane, the pressure inside the reaction tank 2 gradually increases. The process continues until the plug 6 is lifted and disengaged from the channel 3. At this point, the isobutane inside the reaction tank 2 is heated and dehydrogenated, and flows into the spiral pipe 11 through the connecting pipe 9 to preheat the isobutane raw material inside the raw material cylinder 8 until it is discharged from the outlet 12 for collection. After the isobutane is discharged from the reaction tank 2, the compression spring 7 rebounds and presses the plug 6 down into the channel 3. Then, the solenoid valve 14 is opened to introduce the preheated isobutane raw material inside the raw material cylinder 8 into the reaction tank 2 and repeat the steps for heating and dehydrogenation.
[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0027] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.
Claims
1. A heating device for dehydrogenation of isobutane comprising a heating cylinder (1), characterized in that: The heating cylinder (1) has an installation groove (4) at its top. Six installation slide rods (5) are fixedly installed inside the installation groove (4). Plugs (6) are slidably installed through the surfaces of the six installation slide rods (5). A compression spring (7) is sleeved on the surface of the installation slide rod (5) at the top of the plug (6). A raw material cylinder (8) is fixedly installed on the surface of the heating cylinder (1). A connecting conduit (9) is provided between the top of the heating cylinder (1) and the top of the raw material cylinder (8). A feeding valve (10) is connected to one side of the top of the raw material cylinder (8). The raw material cylinder (8) is fixedly installed inside... A spiral pipe (11) is fixedly installed, and the end of the connecting conduit (9) near the raw material cylinder (8) passes through the top of the raw material cylinder (8) and is connected to the spiral pipe (11). The bottom of one side of the raw material cylinder (8) is connected to the outlet (12), and the bottom end of the spiral pipe (11) is connected to the outlet (12). The top of one side of the raw material cylinder (8) is connected to the feeding hose (13). The end of the feeding hose (13) away from the raw material cylinder (8) is connected to the solenoid valve (14), and the end of the solenoid valve (14) away from the feeding hose (13) is connected to the feeding pipe (15).
2. A heating device for dehydrogenation of isobutane according to claim 1, characterized in that: The heating cylinder (1) has a reaction tank (2) at the bottom and a through groove (3) at the center of the top of the reaction tank (2). The reaction tank (2) and the installation groove (4) are connected through the through groove (3), and the bottom of the plug (6) is engaged with the through groove (3).
3. A heating device for dehydrogenation of isobutane according to claim 2, characterized in that: The feeding pipe (15) passes through the heating cylinder (1) and is inserted into the reaction tank (2). The surface of the feeding pipe (15) located at the bottom of the reaction tank (2) is provided with multiple through holes (16).
4. The heating device for dehydrogenation of isobutane according to claim 2, characterized in that: A mounting bracket (17) is fixedly installed on the top of the inner wall of the reaction tank (2). A rotating shaft (18) is rotatably installed between the bottom of the reaction tank (2) and the mounting bracket (17) via a bearing. Multiple rotating blades (19) are fixedly installed on the surface of the rotating shaft (18).
5. A heating device for dehydrogenation of isobutane according to claim 4, characterized in that: The bottom end of the rotating shaft (18) extends through the reaction tank (2) to the bottom of the heating cylinder (1) where a bevel gear (20) is fixedly installed. A rotating motor (21) is fixedly installed on one side of the bottom of the heating cylinder (1). A bevel gear (22) is fixedly installed at the output end of the rotating motor (21), and the bevel gear (22) meshes with the bevel gear (20).
6. A heating device for dehydrogenation of isobutane according to claim 2, characterized in that: A heating coil (23) is fixedly installed on the inner wall of the reaction tank (2), and a base frame (24) is fixedly installed at the bottom of the heating cylinder (1).