Dehydrogenation equipment
By designing a preheating chamber and a catalytic combustion reaction chamber in the dehydrogenation equipment, combining electrical heating and catalytic combustion technology, the problems of uneven heating and high cost in existing equipment are solved, and a more efficient and environmentally friendly dehydrogenation reaction is achieved.
Patent Information
- Application Number
- CN202421724501.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-07-19
AI Technical Summary
The heating methods of existing dehydrogenation equipment have problems such as uneven temperature, excessive temperature, uneco-friendly and high cost.
A dehydrogenation device is designed, including a preheating chamber and a catalytic combustion reaction chamber. The organic liquid is uniformly heated in the preheating chamber through electrical heating fittings, and the gas distribution and sufficient combustion are designed in the catalytic combustion reaction chamber through a gas pipe and a fixed plate.
The uniformity and efficiency of heating the dehydrogenated organic liquid is achieved, the efficiency and benefits of the dehydrogenation reaction are improved, and the overall cost is reduced.
Smart Images
Figure CN222889620U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of organic liquid dehydrogenation, in particular to a dehydrogenation device. Background Art
[0002] Due to problems such as environmental pollution and greenhouse effect, the energy structure based on traditional carbon-based energy is facing huge challenges. Hydrogen energy is considered to be an alternative energy source to fossil fuels in the future because of its cleanliness, high energy density per unit mass, and wide sources.
[0003] Organic liquid hydrogen storage technology uses hydrogen storage solvents with unsaturated carbon-carbon bonds such as certain olefins, alkynes or aromatic hydrocarbons to achieve hydrogen storage and release through a reversible "hydrogenation / dehydrogenation" reaction between the hydrogen storage solvent and hydrogen. Dehydrogenated organic liquids are liquids at room temperature and can release high-purity hydrogen through catalytic reactions. Organic liquid dehydrogenation is a strong endothermic reaction and requires additional heat to carry out the hydrogen production reaction process. The temperature in this process cannot be too high or too low.
[0004] The existing heating methods for dehydrogenation equipment generally include electric heating and flame combustion heating. However, flame combustion will produce by-products due to uneven and excessively high temperatures, which is not environmentally friendly. Electric heating is costly and is not conducive to the long-term development of the enterprise. Utility Model Content
[0005] The embodiment of the utility model provides a dehydrogenation device to solve the problems of uneven temperature, excessive temperature, environmental pollution and high cost in the existing heating method.
[0006] The dehydrogenation device provided according to an embodiment of the utility model includes:
[0007] A reactor, wherein an inlet for a hydrogen-containing organic liquid is disposed at one end of the reactor, an outlet for a hydrogen mixture is disposed at the other end, and a distribution baffle is disposed in the middle of the reactor, the distribution baffle has a plurality of through holes, a preheating chamber is disposed on one side of the distribution baffle close to the inlet, and a catalytic combustion reaction chamber is disposed on one side of the distribution baffle close to the outlet;
[0008] A plurality of electric heating pipes, the electric heating pipes being at least evenly distributed in the preheating chamber and used for heating the organic liquid;
[0009] A plurality of reaction tubes are arranged in the catalytic combustion reaction chamber, one end of the reaction tube is passed through the through hole, and the other end is communicated with the outlet, and a preheated organic liquid flows through the reaction tube.
[0010] In some embodiments, the electric heating tube passes through the distribution partition and enters into the reaction tube.
[0011] In some embodiments, the electric heating tube is located at the center of the reaction tube, and at least two heat conducting plates are fixedly provided between the electric heating tube and the inner wall of the reaction tube.
[0012] In some embodiments, the dehydrogenation device further includes a temperature sensor, and the temperature sensor is disposed in the electric heating pipe.
[0013] In some embodiments, the catalytic combustion reaction chamber is disposed between the distribution partition and the other end of the reactor, and the catalytic combustion reaction chamber includes a first fixed plate and a second fixed plate arranged parallel to the reaction tube, the first fixed plate and the second fixed plate are arranged on the outside of a plurality of the reaction tubes, and a plurality of gas distribution pipes are passed between the first fixed plate and the second fixed plate in a direction perpendicular to the reaction tube.
[0014] In some embodiments, a plurality of air jets or air nozzles are evenly arranged on the air distribution pipe.
[0015] In some embodiments, one end of the gas distribution pipe is communicated with an air inlet disposed on the reactor, and the other end of the gas distribution pipe is communicated with an exhaust port disposed on the reactor.
[0016] In some embodiments, a gas distribution pipe or a gas mixing chamber is disposed between the first fixing plate and the reactor.
[0017] In some embodiments, the reactor is further provided with a catalyst inlet and a catalyst outlet which are connected to the catalytic combustion reaction chamber.
[0018] In some embodiments, an expansion joint is provided on the shell of the reactor; and / or,
[0019] The shell seal of the reactor adopts a static seal structure; and / or,
[0020] Flame retardant and explosion-proof materials are arranged in the catalytic combustion reaction chamber.
[0021] Compared with the prior art, the utility model has the following advantages:
[0022] The dehydrogenation equipment proposed in the embodiment of the utility model heats the dehydrogenated organic liquid more evenly and effectively by arranging a preheating chamber and a catalytic combustion reaction chamber, thereby improving the efficiency and benefit of the dehydrogenation reaction.
[0023] Furthermore, the utility model provides a gas distribution pipe during catalytic combustion, so that the gas distribution in the catalytic combustion reaction chamber is more uniform, so that the charged combustion gas can be fully burned by the solid catalyst without deviation.
[0024] Furthermore, two front and rear fixed plates are provided in the catalytic combustion, and a pressure difference is generated by the front and rear fixed plates, so that the combustion inside the catalytic combustion reaction chamber is more complete, the reaction temperature is more controllable, and the overall cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a structural schematic diagram of a dehydrogenation device provided in one embodiment of the utility model;
[0026] Figure 2 yes Figure 1 A schematic diagram of the structure of the dehydrogenation equipment in another direction;
[0027] Figure 3 This is a three-dimensional diagram of the appearance of a dehydrogenation device provided by an embodiment of the utility model;
[0028] Figure 4 It is a structural schematic diagram of the connection between two fixing plates and an air distribution pipe provided in one embodiment of the utility model;
[0029] Figure 5 yes Figure 4 The schematic diagram of the structure with the gas distribution pipe;
[0030] Figure 6 It is a structural schematic diagram of an air distribution duct with an air nozzle provided in one embodiment of the utility model.
[0031] Notes on the attached drawings:
[0032] 1. Reactor, 11. Distribution baffle, 12. Preheating chamber, 13. Catalytic combustion reaction chamber; 2. Reaction tube, 21. Inlet, 22. Outlet; 31. Hydrogen inlet, 32. Air inlet, 33. Exhaust gas outlet; 34. Catalyst inlet, 35. Catalyst outlet; 4. Electric heating pipe fittings; 5. Gas distribution pipe, 51. Air nozzle; 6. Electric heating port; 7. First fixed plate, 71. Gas distribution pipe; 8. Second fixed plate; 9. Heat conduction plate; 10. Expansion joint. DETAILED DESCRIPTION
[0033] Many specific details are described in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation disclosed below.
[0034] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0035] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0036] In the description of the present invention, reference terms such as "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present invention.
[0037] The embodiment of the utility model discloses a dehydrogenation device, combined with Figure 1-6 As shown, the dehydrogenation equipment comprises:
[0038] A reactor 1, wherein an inlet 21 for a hydrogen-containing organic liquid is disposed at one end of the reactor 1, and an outlet 22 for a hydrogen mixture is disposed at the other end, and a distribution baffle 11 is disposed in the middle of the reactor 1, wherein the distribution baffle 11 has a plurality of through holes, a preheating chamber 12 is disposed on one side of the distribution baffle 11 close to the inlet, and a catalytic combustion reaction chamber 13 is disposed on one side of the distribution baffle close to the outlet 22; optionally, a solid catalyst is disposed in the catalytic combustion reaction chamber, so that the combustion gas filled into the reaction chamber burns more fully, thereby facilitating the dehydrogenation reaction of the organic liquid passing through;
[0039] A plurality of electric heating pipes 4, the electric heating pipes 4 are at least evenly distributed in the preheating chamber 12, and are used to heat the organic liquid; wherein the electric heating pipes 4 enter the reactor 1 from the electric heating port 6;
[0040] A plurality of reaction tubes 2 are arranged in the catalytic combustion reaction chamber 13. One end of the reaction tube 2 is passed through the through hole of the distribution partition, and the other end is connected to the outlet 22. The preheated organic liquid flowing out of the preheating chamber flows through the reaction tube 2.
[0041] The dehydrogenation equipment disclosed in the embodiment of the utility model heats the dehydrogenated organic liquid more evenly and effectively by arranging a preheating chamber and a catalytic combustion reaction chamber, thereby improving the efficiency and benefit of the dehydrogenation reaction.
[0042] It should be pointed out that the embodiments of the present invention do not limit the specific structure, size and material of the shell of the reactor 1 and the reaction tube, which may be cylindrical or square, and do not limit the specific connection structure and model of the electric heating pipe. In this embodiment, the dehydrogenated organic liquid enters the preheating chamber and the reaction tube 2 from the inlet 21, and heat is supplied by electric heating and catalytic combustion to ensure a smooth dehydrogenation reaction.
[0043] In some embodiments, the electric heating pipe 4 also passes through the distribution partition 11 and enters the reaction tube 2, thereby realizing the superposition of electric heating and combustion heating in the catalytic combustion reaction chamber 13, thereby enhancing the heating effect of the dehydrogenation reaction.
[0044] In some optional embodiments, combined with Figure 1 and Figure 2 As shown, the electric heating pipe 4 is located at the center of the reaction tube 2, and at least two heat conducting plates 9 are fixedly arranged between the electric heating pipe 4 and the inner wall of the reaction tube 2. Preferably, there are four heat conducting plates 9 to form a cross-shaped structure. This embodiment improves the uniform heating effect of the reaction tube 2 on the organic liquid by arranging the heat conducting plates, and avoids the generation of unexpected other reactants.
[0045] In some embodiments, in order to control the dehydrogenation reaction, the dehydrogenation device further includes a temperature sensor, and the temperature sensor is disposed in the electric heating pipe, so as to provide real-time feedback on the heating temperature.
[0046] In some embodiments, the catalytic combustion reaction chamber 13 is disposed between the distribution partition 11 and the other end of the reactor 1, and the catalytic combustion reaction chamber 13 includes a first fixed plate 7 and a second fixed plate 8 arranged parallel to the reaction tube 2, the first fixed plate 7 and the second fixed plate 8 are arranged on the outside of the plurality of reaction tubes 2, and a plurality of gas distribution pipes 5 are passed between the first fixed plate 7 and the second fixed plate 8 along a direction perpendicular to the reaction tube, and the gas distribution pipes 5 are arranged between the reaction tubes 2.
[0047] Specific, combined Figure 3 As shown, a first fixing plate and a second fixing plate are respectively arranged on both sides of the catalytic combustion reaction chamber 13, and a through hole is arranged on the first fixing plate 7, which is communicated with the gas distribution pipe 5. The first fixing plate can make the heat energy of the catalytic combustion more concentrated around the reaction tube 2.
[0048] Furthermore, the second fixed plate 8 is provided with more through holes in addition to those connected to the gas distribution pipe 5, and the above-mentioned through holes are connected to the exhaust gas outlet 33. By providing more through holes, the pressure difference on both sides of the fixed plate can be increased, so that the combustion inside the catalytic combustion reaction chamber 13 can be more complete and the temperature can be more uniform.
[0049] In some embodiments, see Figure 4 , 6 As shown, a plurality of air injection ports or air injection nozzles 51 are evenly arranged on the air distribution pipe 5 .
[0050] In some embodiments, one end of the gas distribution pipe 5 is connected to the gas inlets 31 and 32 arranged on the reactor 1, wherein the gas inlet 31 is preferably a hydrogen inlet and the gas inlet 32 is preferably an air inlet; the other end of the gas distribution pipe 5 is connected to the exhaust gas outlet 33 arranged on the reactor 1.
[0051] In some embodiments, see Figure 5 As shown, a gas distribution pipe 71 or a gas mixing chamber is provided between the first fixed plate 7 and the reactor 2. The gas mixing chamber is a space formed between the first fixed plate 7 and the reactor 1, which is used for sufficient mixing of hydrogen and air, thereby facilitating sufficient combustion of the mixed gas after entering the gas distribution pipe.
[0052] In some embodiments, in combination Figure 1-3 As shown, the reactor 1 is also provided with a catalyst inlet 34 and a catalyst outlet 35 which are connected to the catalytic combustion reaction chamber 13 .
[0053] In some embodiments, the reactor 1 is provided with an expansion joint 10. Optionally, the distance between the expansion joint 10 and the outlet 22 is smaller than the distance between the expansion joint 10 and the inlet 21. Because the temperature is high during catalytic combustion, the production volume of external expansion and internal expansion is different, which is easy to cause explosion, so an expansion joint is provided on the outside of the shell to eliminate safety hazards.
[0054] In some optional embodiments, the shell seal of the reactor 1 adopts a static sealing structure, which is stable and has good sealing performance. The static sealing structure includes at least one of an O-ring seal, a gasket seal, a grinding surface seal, a sealant seal, etc.
[0055] In an optional embodiment, the catalytic combustion reaction chamber 13 is provided with flame retardant and explosion-proof materials. When the gas filled in is catalytically combusted by the solid catalyst, the temperature in the catalytic combustion reaction chamber 13 is relatively high, which is easy to generate unnecessary heat and cause explosion. The flame retardant and explosion-proof materials can reduce the occurrence of this situation. The specific location and material type of the flame retardant and explosion-proof materials are not specifically limited. In this embodiment, a steel mesh can be selected.
[0056] The utility model adopts electric heating pipes and catalytic combustion to supply heat, thereby ensuring uniform combustion and a smooth dehydrogenation reaction. The design of the first fixing plate and the second fixing plate fully utilizes the pressure difference generated on both sides of the combustion reaction chamber to make the internal temperature mixing more uniform, thereby achieving the purpose of reducing costs and accurately controlling the reaction temperature.
[0057] It should be noted that although the utility model is disclosed as above in the form of a preferred embodiment, it is not intended to limit the utility model. Any technical personnel in this field may make possible changes and modifications without departing from the spirit and scope of the utility model. Therefore, the scope of protection of the utility model shall be based on the scope defined by the claims of the utility model.
Claims
1. A dehydrogenation device, characterized in that: include: A reactor, wherein an inlet for a hydrogen-containing organic liquid is disposed at one end of the reactor, an outlet for a hydrogen mixture is disposed at the other end, and a distribution baffle is disposed in the middle of the reactor, the distribution baffle has a plurality of through holes, a preheating chamber is disposed on one side of the distribution baffle close to the inlet, and a catalytic combustion reaction chamber is disposed on one side of the distribution baffle close to the outlet; A plurality of electric heating pipes, the electric heating pipes being at least evenly distributed in the preheating chamber and used for heating the organic liquid; A plurality of reaction tubes are arranged in the catalytic combustion reaction chamber, one end of the reaction tube is passed through the through hole of the distribution partition, and the other end is connected to the outlet, and a preheated organic liquid flows through the reaction tube.
2. The dehydrogenation equipment according to claim 1, characterized in that: The electric heating pipe passes through the distribution partition and enters into the reaction tube.
3. The dehydrogenation equipment according to claim 2, characterized in that: The electric heating pipe is located at the center of the reaction tube, and at least two heat conducting plates are fixedly arranged between the electric heating pipe and the inner wall of the reaction tube.
4. The dehydrogenation equipment according to claim 1, characterized in that: The dehydrogenation equipment further comprises a temperature sensor, and the temperature sensor is arranged in the electric heating pipe.
5. The dehydrogenation equipment according to claim 1, characterized in that: The catalytic combustion reaction chamber is arranged between the distribution partition and the other end of the reactor, and the catalytic combustion reaction chamber includes a first fixed plate and a second fixed plate arranged parallel to the reaction tube, the first fixed plate and the second fixed plate are arranged on the outside of the plurality of reaction tubes, and a plurality of gas distribution pipes are passed between the first fixed plate and the second fixed plate in a direction perpendicular to the reaction tube.
6. The dehydrogenation device according to claim 5, characterized in that: The air distribution pipe is evenly provided with a plurality of air injection openings or air injection nozzles.
7. The dehydrogenation device according to claim 6, characterized in that: One end of the gas distribution pipe is communicated with an air inlet arranged on the reactor, and the other end of the gas distribution pipe is communicated with an exhaust port arranged on the reactor.
8. The dehydrogenation device according to any one of claims 5 to 7, characterized in that: A gas distribution pipe or a gas mixing chamber is arranged between the first fixing plate and the reactor.
9. The dehydrogenation device according to any one of claims 1 to 7, characterized in that: The reactor is also provided with a catalyst inlet and a catalyst outlet which are communicated with the catalytic combustion reaction chamber.
10. The dehydrogenation device according to any one of claims 1 to 7, characterized in that: The shell of the reactor is provided with an expansion joint; and / or, The shell seal of the reactor adopts a static seal structure; and / or, Flame retardant and explosion-proof materials are arranged in the catalytic combustion reaction chamber.