A new structure hydrogenation reactor

Abstract

This utility model relates to the field of hydrogenation reactor technology and discloses a novel structural hydrogenation reactor, including a reactor body. From top to bottom, the reactor body has an inlet, a disperser, a top distribution plate, a fouling basket, and a thermocouple. The bottom of the reactor has an outlet. Several sets of catalyst beds are arranged between the fouling basket and the outlet. The catalyst beds include a catalyst support frame for convenient catalyst support, a cold hydrogen plate, a cold hydrogen tank, and a bottom distribution plate. The cold hydrogen plate is located between the catalyst support frame and the cold hydrogen tank and has several evenly distributed injection holes. The cold hydrogen tank includes a top plate, an upper baffle, and a lower baffle from top to bottom. A spin disturbance component is provided between the top plate and the upper baffle, and a thorough mixing component is provided between the upper baffle and the lower baffle. The advantages of this utility model compared to existing technologies are: it facilitates reducing the possibility of fouling basket clogging and improves the mixing efficiency between cold hydrogen and hot reactants.

Description

Technical Field

[0001] This utility model relates to the field of hydrogenation reactor technology, specifically to a novel structural hydrogenation reactor. Background Technology

[0002] The hydrogenation reactor is the core equipment of the hydrogenation unit and the key to the hydrogenation process. The reactor contains internal components such as diffusers, distribution plates, scale baskets, catalyst support plates, catalyst discharge pipes, cold hydrogen pipes, cold hydrogen tanks, outlet collectors, and thermocouples.

[0003] In particular, the fouling basket is often set up with a filter cartridge relative to the distribution plate. Mechanical impurities in the oil and gas are filtered through the fouling basket and accumulate inside it. After long-term use, the fouling basket will become clogged, which will lead to an increase in the pressure drop in the reactor bed. In addition, existing cold hydrogen tanks mostly achieve mixing between cold hydrogen and hot reactants by extending the path between them in order to control the temperature, which has poor mixing efficiency. Utility Model Content

[0004] The technical problem this invention aims to solve is that the scale basket is prone to clogging, and the mixing efficiency of cold hydrogen and hot reactants in the cold hydrogen tank is poor.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a novel hydrogenation reactor, comprising a reactor body, an inlet, a disperser, a top distribution plate, a fouling basket, and a thermocouple arranged sequentially from top to bottom at the top of the reactor body, an outlet at the bottom of the reactor, and several sets of catalyst beds arranged between the fouling basket and the outlet in the reactor body.

[0006] The fouling basket includes a settling tank, which is positioned opposite the top distribution plate. An inner support frame is provided through the middle of the settling tank and circumferentially upward through the through hole. A filter cartridge is detachably sealed outside the inner support frame of the settling tank. The top of the filter cartridge is sealed. Several filter holes are evenly distributed on the side wall and top wall of the filter cartridge. The catalytic bed includes a catalyst support frame for convenient catalyst support, a cold hydrogen plate, a cold hydrogen box, and a bottom distribution plate. The cold hydrogen plate is located between the catalyst support frame and the cold hydrogen box and is evenly distributed with several injection holes. The cold hydrogen box includes a top plate, an upper baffle, and a lower baffle from top to bottom. A spin disturbance component is provided between the top plate and the upper baffle, and a thorough mixing component is provided between the upper baffle and the lower baffle.

[0007] Furthermore, the settling tank has a cylindrical shell or conical shell structure, and the area between the bottom wall of the settling tank and the support frame is a scale accumulation cavity.

[0008] Furthermore, the top of the filter cartridge has a hemispherical shell structure or a conical structure.

[0009] Furthermore, the cold hydrogen disk has a loop-shaped structure.

[0010] Furthermore, the top plate and the upper baffle are concentrically arranged and the diameter is smaller than that of the upper baffle. The spin disturbance component includes a first arc-shaped plate arranged opposite to each other on both sides of the top plate and the upper baffle. The upper baffle has a through hole in the middle. A second arc-shaped plate is arranged between the through hole and the first arc-shaped plate. A first gap is provided between the ends of the first arc-shaped plate, between the ends of the second arc-shaped plate, and between the second arc-shaped plate and the first arc-shaped plate. The second arc-shaped plate and the first arc-shaped plate are staggered. The top plate has a rotating blade at the through hole.

[0011] Furthermore, the upper baffle and the lower baffle are circumferentially sealed together by a ring plate. The fully mixing component includes several baffles symmetrically arranged on both sides of the through hole, with a second gap between adjacent baffles and the ring plate and the second gaps being in opposite directions. The lower baffle has a discharge port between the end baffle and the ring plate.

[0012] The advantages of this utility model compared with the prior art are as follows:

[0013] 1. By setting up a fouling basket consisting of a settling tank, an inner support frame, and a filter cartridge, mechanical impurities in the oil and gas can be accumulated through the settling tank while preventing impurities from directly threatening the passing surface area of ​​the filter cartridge, thereby reducing the possibility of impurities clogging the filter cartridge.

[0014] 2. The spin perturbation component facilitates accelerated collisions between oil and gas and hydrogen, reducing internal energy; while the mixing component ensures that hydrogen and oil have sufficient time to mix fully to eliminate temperature differences. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a novel hydrogenation reactor according to this utility model.

[0016] Figure 2 This is a half-sectional structural schematic diagram of a novel hydrogenation reactor according to this utility model.

[0017] Figure 3 yes Figure 2 A magnified structural diagram of A in the diagram.

[0018] Figure 4 This is a schematic diagram of the lower cross-section of a novel hydrogenation reactor according to this utility model.

[0019] Figure 5 This is a schematic diagram of the lower cross-section of a novel hydrogenation reactor according to this utility model.

[0020] As shown in the figure: 1. Inlet, 2. Outlet, 3. Top distribution plate, 4. Scale basket, 5. Settling tank, 6. Internal support frame, 7. Filter cartridge, 8. Catalyst support frame, 9. Cold hydrogen plate, 10. Cold hydrogen box, 11. Top plate, 12. Feed port, 13. Upper baffle, 14. Lower baffle, 15. Spin disturbance component, 16. Fully mixing component, 17. First arc plate, 18. Through hole, 19. Second arc plate, 20. First gap, 21. Rotary blade, 22. Baffle plate, 23. Second gap, 24. Reactor body. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Combined with appendix Figure 1 Appendix Figure 2 and attached Figure 3 A novel hydrogenation reactor includes a reactor body 24. The top of the reactor body 24, from top to bottom, is provided with an inlet 1, a disperser, a top distribution plate 3, a fouling basket 4, and a thermocouple. The bottom of the reactor body 24 is provided with an outlet 2. The fouling basket 4 includes a settling tank 5, which is positioned opposite the top distribution plate 3. An inner support frame 6 is provided circumferentially upwards through the middle of the settling tank 5. The settling tank 5 has a cylindrical or conical shell structure. A fouling cavity is formed between the bottom wall of the settling tank 5 and the support frame. A filter cartridge 7 is detachably and sealed outside the inner support frame 6 in the settling tank 5. The top of the filter cartridge 7 is sealed. The top of the filter cartridge 7 has a hemispherical or conical shell structure. Several filter holes are evenly distributed on the sidewalls and top wall of the filter cartridge 7.

[0023] Oil and gas are introduced through inlet 1, then dispersed by a disperser, and uniformly and stably introduced into the top distribution plate 3. The distribution plate of the currently used hydrogenation reactor adopts a bubble cap type distributor. The settling tank 5 of this practical application is set relative to the bubble cap distributor. Mechanical impurities mixed in the oil and gas will be introduced into the settling tank 5 along the wall of the settling tank 5. After the oil and gas are filtered through the filter holes on the filter cartridge 7, they are discharged from the inner wall of the filter cartridge 7. The filtered impurities accumulate in the scale accumulation cavity between the bottom wall of the settling tank 5 and the support frame. This avoids the traditional filter cartridge 7 from accumulating directly in the filter cartridge 7, which would encroach on the filter surface area of ​​the oil and gas and the filter cartridge 7 and easily cause blockage.

[0024] Combined with appendix Figure 2The reactor body 24 has several sets of catalyst beds between the scale basket 4 and the outlet 2. The catalyst beds include a catalyst support 8 for convenient support of the catalyst, a cold hydrogen plate 9, a cold hydrogen box 10 and a bottom distribution plate. The cold hydrogen plate 9 is located between the catalyst support 8 and the cold hydrogen box 10, has a U-shaped structure and is evenly distributed with several injection holes.

[0025] Since the reaction between oil and gas and hydrogen under the action of catalyst is a heating reaction, it will release heat. After the reaction in the previous catalyst bed, the temperature will rise. In order to continue the effective reaction in the next catalyst bed, cold hydrogen needs to be introduced between the two beds through the cold hydrogen disk 9 to control the temperature and avoid the catalyst from sintering and losing its activity due to excessive temperature. The loop structure of the cold hydrogen disk 9 facilitates the uniformity of cold hydrogen introduction, thereby improving the efficiency of temperature control.

[0026] Combined with appendix Figure 2 and attached Figure 4 The cold hydrogen tank 10 includes a top plate 11, an upper baffle 13, and a lower baffle 14 from top to bottom. A spin disturbance component 15 is provided between the top plate 11 and the upper baffle 13. The top plate 11 and the upper baffle 13 are concentrically arranged, and the diameter of the top plate 11 is smaller than the diameter of the upper baffle 13. The spin disturbance component 15 includes a first arc-shaped plate 17 arranged opposite to each other on both sides of the top plate 11 and the upper baffle 13. A through hole 18 is provided in the middle of the upper baffle 13. A second arc-shaped plate 19 is provided between the through hole 18 and the first arc-shaped plate 17. A first gap 20 is provided between the ends of the first arc-shaped plate 17, between the ends of the second arc-shaped plate 19, and between the second arc-shaped plate 19 and the first arc-shaped plate 17. The second arc-shaped plate 19 and the first arc-shaped plate 17 are staggered. A rotatable blade 21 is provided on the top plate 11 at the through hole 18.

[0027] Cold hydrogen and oil gas are introduced between the top plate 11 and the upper baffle 13 through the first gap 20 between the ends of the first arc plate 17, and then guided through the through hole 18 between the ends of the second arc plate 19, thereby driving the swivel blade 21. Conversely, the swivel blade 21 also further increases the disturbance of the cold hydrogen and oil gas.

[0028] Combined with appendix Figure 2 Appendix Figure 4 and attached Figure 5 A fully mixing component 16 is provided between the upper baffle 13 and the lower baffle 14. The upper baffle 13 and the lower baffle 14 are circumferentially sealed by an annular plate. The fully mixing component 16 includes a plurality of baffle plates 22 symmetrically arranged on both sides of the through hole 18 of the upper baffle 13 and the lower baffle 14. A second gap 23 is provided between adjacent baffle plates 22 and the annular plate, and the second gap 23 is in opposite directions. A discharge port 12 is provided between the end baffle plate 22 and the annular plate of the lower baffle 14.

[0029] Cold hydrogen and oil gas are introduced between the upper baffle 13 and the lower baffle 14 through the through hole 18. Then, the direction of the mixture is forced to change multiple times by the baffle 22, which enhances the mixture and the collision between the mixture and the baffle 22, prolongs the mixing path between the cold hydrogen and oil gas, further improves the uniformity of the mixture, facilitates effective temperature control, and avoids local overheating that could damage the catalyst bed in the next layer.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] 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.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A novel structured hydrogenation reactor, comprising a reactor body (24), wherein the top of the reactor body (24) is provided with an inlet (1), a disperser, a top distribution plate (3), a fouling basket (4), and a thermocouple in sequence from top to bottom; the bottom of the reactor body (24) is provided with an outlet (2); and the reactor body (24) is provided with a plurality of catalytic beds between the fouling basket (4) and the outlet (2), characterized in that: The scale basket (4) includes a sedimentation tank (5), which is positioned opposite the top distribution plate (3). The sedimentation tank (5) is provided through the middle and an inner support frame (6) is provided circumferentially upward through the through hole. A filter cylinder (7) is provided in a detachable sealing sleeve outside the inner support frame (6) of the sedimentation tank (5). The top of the filter cylinder (7) is sealed. Several filter holes are evenly distributed on the side wall and top wall of the filter cylinder (7). The catalyst bed includes a catalyst support (8) for convenient support of the catalyst, a cold hydrogen plate (9), a cold hydrogen box (10) and a bottom distribution plate. The cold hydrogen plate (9) is located between the catalyst support (8) and the cold hydrogen box (10) and is evenly distributed with a number of injection holes. The cold hydrogen box (10) includes a top plate (11), an upper baffle (13) and a lower baffle (14) from top to bottom. A spin disturbance component (15) is provided between the top plate (11) and the upper baffle (13), and a fully mixing component (16) is provided between the upper baffle (13) and the lower baffle (14).

2. The novel hydrogenation reactor according to claim 1, characterized in that: The settling tank (5) is a cylindrical shell or a conical shell structure, and the bottom wall of the settling tank (5) and the support frame form a scale accumulation cavity.

3. The novel structural hydrogenation reactor according to claim 1, characterized in that: The top of the filter cartridge (7) has a hemispherical shell structure or a conical structure.

4. The novel hydrogenation reactor according to claim 1, characterized in that: The cold hydrogen disk (9) has a loop-shaped structure.

5. A novel hydrogenation reactor according to claim 1, characterized in that: The top plate (11) and the upper baffle (13) are concentrically arranged and the diameter of the top plate (11) is smaller than the diameter of the upper baffle (13). The spin disturbance component (15) includes a first arc plate (17) arranged opposite to the top plate (11) and the upper baffle (13) on both sides of the circumference. The upper baffle (13) has a through hole (18) in the middle. A second arc plate (19) is provided between the through hole (18) and the first arc plate (17). A first gap (20) is provided between the ends of the first arc plate (17), between the ends of the second arc plate (19), and between the second arc plate (19) and the first arc plate (17). The second arc plate (19) is misaligned with the first arc plate (17). The top plate (11) has a rotating blade (21) at the through hole (18).

6. A novel structural hydrogenation reactor according to claim 5, characterized in that: The upper baffle (13) and the lower baffle (14) are circumferentially sealed by a ring plate. The fully mixing component (16) includes several baffles (22) symmetrically arranged on both sides of the through hole (18) of the upper baffle (13) and the lower baffle (14). A second gap (23) is provided between adjacent baffles (22) and the ring plate, and the second gaps (23) are in opposite directions. A discharge port (12) is provided between the end baffle (22) and the ring plate of the lower baffle (14).

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