A sectionalized dismountable pilot reactor

Abstract

The utility model belongs to reactor technical field especially is a kind of sectional detachable pilot reactor, including lower cylinder, the lower surface of lower cylinder is fixedly installed with discharge pipe, the outer surface of lower cylinder is fixedly installed with first heating mechanism, the upper surface of lower cylinder is installed with middle cylinder by first connecting mechanism, the outer surface of middle cylinder is fixedly installed with second heating mechanism, the upper surface of second middle cylinder is installed with upper cylinder by second connecting mechanism, the right side wall of upper cylinder is fixedly installed with feed pipe, the upper side wall of upper cylinder is installed with temperature measuring mechanism, and temperature measuring mechanism is arranged in lower cylinder and middle cylinder;The utility model realizes the purpose that catalyst filling whole process visual inspection, manual spreading or compaction, flexible setting inner piece, realize the mode that temperature measurement and reaction material are directly contacted, material reaction temperature is balanced, adopts electric heating wire as reactor heat preservation mode.

Description

Technical Field

[0001] This utility model relates to the field of reactor technology, specifically to a segmented, detachable pilot-scale reactor. Background Technology

[0002] For the pilot-scale test of a 20L Fischer-Tropsch wax deep processing hydrogenation catalyst, the reactor is small in size, with a small catalyst loading (<20L), a height of <3 meters, a diameter of <15cm, and no manhole (making it impossible for personnel to enter and operate). The reactor is a small-scale fixed-bed reactor with catalyst inlets (<10cm) at the top and bottom. In pilot-scale tests, small fixed-bed hydrogenation reactors are typically constructed with the shell and head structure welded together as a single unit. This makes it impossible to visually inspect, manually level or compact, or flexibly adjust the height of internal components and the position of thermocouples during catalyst loading. In our pilot-scale reactor's actual catalyst loading process, the catalyst piles up after falling, resulting in a high density and small gaps in the center, and a low density and large gaps around the periphery, easily leading to channeling or flow deviation. After feeding and heating, the temperature in the lower part of the catalyst bed is high, while the temperature in the upper bed and near the inner wall of the reactor is lower. Under normal temperature control, the temperature difference between the upper and lower bed layers reaches 35-50°C, making it difficult to achieve the expected isothermal reaction. Furthermore, the temperature probe measuring the catalyst bed is installed inside a hollow metal tube at the reactor's axis, which is always filled with gas, resulting in high heat transfer resistance and significant deficiencies in accurate temperature measurement and timely feedback. This greatly affects mass and heat transfer, significantly reducing experimental results. Therefore, we propose a segmented, detachable pilot-scale reactor to address these problems. Utility Model Content

[0003] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a segmented, detachable pilot-scale reactor, which solves the problems mentioned in the background section.

[0004] (II) Technical Solution To achieve the above objectives, this utility model specifically adopts the following technical solution: A segmented, detachable pilot-scale reactor includes a lower cylinder with open upper and lower sides. A discharge pipe is fixedly installed on the lower surface of the lower cylinder. A first heating mechanism is fixedly installed on the outer surface of the lower cylinder. A middle cylinder is installed on the upper surface of the lower cylinder via a first connecting mechanism, and the upper and lower sides of the middle cylinder are also open. A second heating mechanism is fixedly installed on the outer surface of the middle cylinder. An upper cylinder is installed on the upper surface of the second middle cylinder via a second connecting mechanism, and the lower surface of the upper cylinder is open. A feed pipe is fixedly installed on the right side wall of the upper cylinder. A temperature measuring mechanism is installed on the upper side wall of the upper cylinder, and the temperature measuring mechanism is located within both the lower and middle cylinders. The first heating mechanism, the second heating mechanism, and the temperature measuring mechanism are all electrically connected to a controller.

[0005] Furthermore, the first heating mechanism includes a heat insulation jacket, a heating wire, a first temperature sensor and a first connector. The heat insulation jacket is fixedly installed on the outer surface of the lower cylinder. The heating wire is wound on the corresponding outer surface of the lower cylinder. The first temperature sensor and the first connector are fixedly installed on the side wall of the heat insulation jacket, and the first temperature sensor is in contact with the outer surface of the lower cylinder.

[0006] Furthermore, the second heating mechanism has the same structure as the first heating mechanism, and the second heating mechanism and the first heating mechanism are connected by a first connector.

[0007] Furthermore, the first connecting mechanism includes a flange, a rubber sealing ring, and a fastening bolt assembly. The flanges are respectively fixedly installed on the upper surface of the lower cylinder and the upper surface of the middle cylinder, and a rubber sealing ring is installed between the upper and lower flanges. The flanges are locked and fixed together by the fastening bolt assembly.

[0008] Furthermore, the second connecting mechanism has the same structure as the first connecting mechanism.

[0009] Furthermore, the temperature measuring mechanism includes a first sleeve, a plug, a second connector, a second sleeve, a third sleeve, a branch pipe, and a second temperature probe. The first sleeve is fixedly installed on the upper side wall of the upper cylinder. A plug is installed on the upper surface of the first sleeve, and a second connector is embedded in the plug. A second sleeve is inserted into the lower surface of the first sleeve, and a third sleeve is inserted into the lower surface of the second sleeve. The outer surfaces of the second sleeve and the third sleeve are arranged in a cross shape on the branch pipe, and a second temperature probe is provided on each branch pipe.

[0010] Furthermore, the second sleeve is installed inside the middle cylinder, and the third sleeve is installed inside the lower cylinder.

[0011] (III) Beneficial Effects Compared with the prior art, this utility model provides a segmented and detachable pilot-scale reactor, which has the following advantages: This invention enables the assembly and disassembly of the lower cylinder, middle cylinder, and upper cylinder through a first connecting mechanism and a second connecting mechanism. This allows for visual inspection of the catalyst filling process, manual leveling or compaction, and flexible arrangement of internal components. Furthermore, the temperature measuring mechanism ensures direct contact between the temperature measuring device and the reactants, resulting in a uniform reaction temperature. The first and second heating mechanisms then heat the outer surfaces of the lower and middle cylinders, achieving the effect of using heating wires as a reactor insulation method and reducing the radial temperature difference inside the reactor. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a cross-sectional view of the temperature measuring mechanism of this utility model.

[0013] In the diagram: 1. Lower cylinder; 2. Discharge pipe; 3. First heating mechanism; 301. Insulation jacket; 302. Heating wire; 303. First temperature sensor; 304. First connector; 4. First connecting mechanism; 401. Flange; 402. Rubber sealing ring; 403. Fastening bolt assembly; 5. Middle cylinder; 6. Second heating mechanism; 7. Second connecting mechanism; 8. Upper cylinder; 9. Feed pipe; 10. Temperature measuring mechanism; 101. First sleeve; 102. Plug; 103. Second connector; 104. Second sleeve; 105. Third sleeve; 106. Branch pipe; 107. Second temperature sensor; 11. Controller. Detailed Implementation

[0014] 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. Example

[0015] like Figures 1-3As shown in the figure, an embodiment of the present invention provides a segmented and detachable pilot reactor, including a lower cylinder 1, the upper and lower sides of which are open structures. A discharge pipe 2 is fixedly installed on the lower surface of the lower cylinder 1. A first heating mechanism 3 is fixedly installed on the outer surface of the lower cylinder 1. A middle cylinder 5 is installed on the upper surface of the lower cylinder 1 through a first connecting mechanism 4, and the upper and lower sides of the middle cylinder 5 are open structures. A second heating mechanism 6 is fixedly installed on the outer surface of the middle cylinder 5. An upper cylinder 8 is installed on the upper surface of the second middle cylinder 5 through a second connecting mechanism 7, and the lower surface of the upper cylinder 8 is open structures. A feed pipe 9 is fixedly installed on the right side wall of the upper cylinder 8. A temperature measuring mechanism 10 is installed on the upper side wall of the upper cylinder 8, and the temperature measuring mechanism 10 is disposed inside the lower cylinder 1 and the middle cylinder 5. The first heating mechanism 3, the second heating mechanism 6, and the temperature measuring mechanism 10 are all electrically connected to a controller 11.

[0016] like Figure 2 As shown, in some embodiments, the first heating mechanism 3 includes a heat insulation jacket 301, a heating wire 302, a first temperature sensor 303, and a first connector 304. The heat insulation jacket 301 is fixedly installed on the outer surface of the lower cylinder 1. The heating wire 302 is wound on the outer surface of the lower cylinder 1 corresponding to the heat insulation jacket 301. The first temperature sensor 303 and the first connector 304 are fixedly installed on the side wall of the heat insulation jacket 301, and the first temperature sensor 303 is in contact with the outer surface of the lower cylinder 1.

[0017] In this embodiment, the first temperature sensing probe 303 detects the side wall temperature of the lower cylinder 1 and feeds the information back to the controller 11. The controller 11, based on the temperature of the temperature measuring mechanism 10, activates the heating wire 302 to heat the lower cylinder 1, thereby achieving the effect of heat preservation of the reactor and reducing the temperature difference between the reactor and the reactor.

[0018] like Figure 2 As shown, in some embodiments, the second heating mechanism 6 has the same structure as the first heating mechanism 3, and the second heating mechanism 6 and the first heating mechanism 3 are connected by a first connector 304.

[0019] In this embodiment, the second heating mechanism 6 can heat the middle cylinder 5.

[0020] like Figure 2 As shown, in some embodiments, the first connecting mechanism 4 includes a flange 401, a rubber sealing ring 402, and a fastening bolt assembly 403. The flange 401 is fixedly installed on the upper surface of the lower cylinder 1 and the upper surface of the middle cylinder 5, respectively, and a rubber sealing ring 402 is installed between the upper and lower flanges 401. The flanges 401 are locked and fixed together by the fastening bolt assembly 403.

[0021] In this embodiment, the upper and lower flanges 401 are connected and fixed by the fastening bolt assembly 403, so that the lower cylinder 1 and the middle cylinder 5 are connected and fixed, thereby allowing the upper and lower flanges 401 to be disassembled and assembled, that is, allowing the lower cylinder 1 and the middle cylinder 5 to be disassembled and assembled. The rubber sealing ring 402 makes the sealing effect between the upper and lower flanges 401 better.

[0022] like Figure 2 As shown, in some embodiments, the second connecting mechanism 7 has the same structure as the first connecting mechanism 4.

[0023] In this embodiment, the second connecting mechanism 7 enables the middle cylinder 5 and the upper cylinder 8 to be disassembled and assembled.

[0024] like Figure 2 and Figure 3 As shown, in some embodiments, the temperature measuring mechanism 10 includes a first sleeve 101, a plug 102, a second connector 103, a second sleeve 104, a third sleeve 105, a branch pipe 106, and a second temperature probe 107. The first sleeve 101 is fixedly installed on the upper side wall of the upper cylinder 8. The plug 102 is installed on the upper surface of the first sleeve 101, and the second connector 103 is embedded in the plug 102. The second sleeve 104 is inserted into the lower surface of the first sleeve 101, and the third sleeve 105 is inserted into the lower surface of the second sleeve 104. The outer surfaces of the second sleeve 104 and the third sleeve 105 are arranged in a cross shape on the branch pipe 106, and the branch pipe 106 is provided with a second temperature probe 107.

[0025] In this embodiment, according to the designed bed height of the catalyst loading, the second temperature probe 107 jacket corresponding to the inlet and outlet positions of the bed is welded and installed in a symmetrical position on the metal pipe perpendicular to the reactor axis during manufacturing. The second temperature probe 107 has been pre-manufactured and embedded in the jacket. When the lower cylinder 1, the middle cylinder 5 and the upper cylinder 8 are connected, the corresponding first sleeve 101, second sleeve 104 and third sleeve 105 are connected vertically. The second temperature probe 107 on the branch pipe 106 can directly detect the material temperature in the lower cylinder 1 and the middle cylinder 5.

[0026] like Figure 2 As shown, in some embodiments, the second sleeve 104 is disposed inside the middle cylinder 5, and the third sleeve 105 is disposed inside the lower cylinder 1.

[0027] In this embodiment, the second temperature sensing probe 107 inside the branch pipe 106 of the second sleeve 104 and the third sleeve 105 can respectively sense the temperature of the material inside the lower cylinder 1 and the middle cylinder 5.

[0028] During use, when filling the filler and catalyst from the bottom up, start filling the proppant and catalyst from the lower cylinder 1. Accurately determine the height and filling amount according to the design parameters. During filling, visually inspect each layer of filler to ensure it is flat, even, and uniform in particle size, and free of abnormal filler or impurities. Also check that the internal components are correctly placed and adjusted to the corresponding temperature measurement height of the catalyst bed. Fix the third sleeve 105 to the internal components. After filling, connect and fix the lower cylinder 1 and middle cylinder 5 via the upper and lower flanges 401 in the first connecting mechanism 4 using the fastening bolt assembly 403. Fill the middle cylinder 5 with proppant and catalyst in the same way, accurately determining the height and filling amount according to the design parameters. Install the second sleeve 104, electrically connecting it to the second temperature sensor 107 inside the third sleeve 105. After filling, connect and fix the middle cylinder 5 and upper cylinder 8 via the second connecting mechanism 7. The second sleeve 104 and the second temperature probe 107 are electrically connected to the lower end of the second connector 103, enabling visual inspection, manual leveling or compaction, and flexible internal component placement throughout the catalyst loading process. The second temperature probe 107, pre-manufactured and embedded in the jacket within the temperature measuring mechanism 10, connects the lower cylinder 1, middle cylinder 5, and upper cylinder 8. The corresponding first sleeve 101, second sleeve 104, and third sleeve 105 then connect vertically. The second temperature probe 107 on the branch pipe 106... 07 can directly detect the material temperature inside the lower cylinder 1 and the middle cylinder 5, ensuring a uniform material reaction temperature. This allows the first temperature sensing probe 303 in the first heating mechanism 3 and the second heating mechanism 6 to detect the side wall temperature of the lower cylinder 1 and feed the information back to the controller 11. Based on the temperature of the temperature measuring mechanism 10, the controller 11 activates the heating wire 302 to heat the lower cylinder 1 and the middle cylinder 5, achieving the effect of heat preservation of the reactor and reducing the temperature difference between the reactor cores.

[0029] In summary, this segmented and detachable pilot-scale reactor enables visual inspection of the catalyst loading process, manual leveling or compaction, and flexible internal component settings. It also allows for direct contact between temperature measurement and reactants, resulting in a uniform reaction temperature. The reactor is insulated using 302 heating wire.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A segmented, detachable pilot-scale reactor, comprising a lower cylinder (1), characterized in that: The lower cylinder (1) has an open structure on both the upper and lower sides. A discharge pipe (2) is fixedly installed on the lower surface of the lower cylinder (1). A first heating mechanism (3) is fixedly installed on the outer surface of the lower cylinder (1). A middle cylinder (5) is installed on the upper surface of the lower cylinder (1) through a first connecting mechanism (4). The upper and lower sides of the middle cylinder (5) have an open structure. A second heating mechanism (6) is fixedly installed on the outer surface of the middle cylinder (5). An upper cylinder (8) is installed on the upper surface of the second middle cylinder (5) through a second connecting mechanism (7). The lower surface of the upper cylinder (8) has an open structure. A feed pipe (9) is fixedly installed on the right side wall of the upper cylinder (8). A temperature measuring mechanism (10) is installed on the upper side wall of the upper cylinder (8). The temperature measuring mechanism (10) is located inside the lower cylinder (1) and the middle cylinder (5). The first heating mechanism (3), the second heating mechanism (6), and the temperature measuring mechanism (10) are all electrically connected to the controller (11).

2. The segmented, detachable pilot-scale reactor according to claim 1, characterized in that: The first heating mechanism (3) includes a heat insulation jacket (301), a heating wire (302), a first temperature sensor (303), and a first connector (304). The heat insulation jacket (301) is fixedly installed on the outer surface of the lower cylinder (1). The heating wire (302) is wound on the outer surface of the lower cylinder (1) corresponding to the heat insulation jacket (301). The first temperature sensor (303) and the first connector (304) are fixedly installed on the side wall of the heat insulation jacket (301), and the first temperature sensor (303) is in contact with the outer surface of the lower cylinder (1).

3. The segmented, detachable pilot-scale reactor according to claim 1, characterized in that: The second heating mechanism (6) has the same structure as the first heating mechanism (3), and the second heating mechanism (6) and the first heating mechanism (3) are connected by the first terminal (304).

4. A segmented, detachable pilot-scale reactor according to claim 1, characterized in that: The first connecting mechanism (4) includes a flange (401), a rubber sealing ring (402), and a fastening bolt assembly (403). The flange (401) is fixedly installed on the upper surface of the lower cylinder (1) and the upper surface of the middle cylinder (5), and a rubber sealing ring (402) is installed between the upper and lower flanges (401). The flanges (401) are locked and fixed together by the fastening bolt assembly (403).

5. A segmented, detachable pilot-scale reactor according to claim 1, characterized in that: The second connecting mechanism (7) has the same structure as the first connecting mechanism (4).

6. A segmented, detachable pilot-scale reactor according to claim 1, characterized in that: The temperature measuring mechanism (10) includes a first sleeve (101), a plug (102), a second connector (103), a second sleeve (104), a third sleeve (105), a branch pipe (106), and a second temperature probe (107). The first sleeve (101) is fixedly installed on the upper side wall of the upper cylinder (8). The plug (102) is installed on the upper surface of the first sleeve (101), and the second connector (103) is embedded in the plug (102). The second sleeve (104) is inserted into the lower surface of the first sleeve (101), and the third sleeve (105) is inserted into the lower surface of the second sleeve (104). The outer surfaces of the second sleeve (104) and the third sleeve (105) are arranged in a cross shape on the branch pipe (106), and the branch pipe (106) is provided with a second temperature probe (107).

7. A segmented, detachable pilot-scale reactor according to claim 6, characterized in that: The second sleeve (104) is installed inside the middle cylinder (5), and the third sleeve (105) is installed inside the lower cylinder (1).

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