Catalyst fixed bed reaction device for isobutene production
By using upper and lower alumina filter elements to disperse the material in a fixed bed reactor and arranging the lower alumina filter element above the liquid collector, the catalyst clogging problem was solved and the reaction effect of isobutylene production was improved.
Patent Information
- Application Number
- CN202422641127.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-10-31
AI Technical Summary
The liquid collector of the existing fixed bed reactor easily causes the catalyst to block the drainage hole, resulting in the accumulation of reacted materials inside, affecting the reaction effect.
Upper and lower alumina filter elements are used to disperse the reaction materials, and a lower alumina filter element is set above the liquid collector to prevent the catalyst from blocking the drain pipe. At the same time, the reaction temperature is measured by a thermocouple thermometer jacket to ensure smooth discharge of materials.
It effectively prevents catalyst clogging and material aggregation, improves reaction effect and ensures the quality of isobutylene production.
Smart Images
Figure CN223366890U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of auxiliary equipment for isobutylene production, in particular to a catalyst fixed bed reaction device for isobutylene production. Background Art
[0002] At present, the C4 raw material with high isobutylene content required for the etherification reaction of the C4 device is obtained through the isomerization reaction of butene. The conversion rate of the isomerization reaction directly affects the isobutylene content in the etherification feed C4, and the fixed-bed reactor is a key equipment for isobutylene production. The existing fixed-bed reactor includes a reactor shell with a feed port on the top, a liquid collector is provided below the feed port in the reactor shell, and a drain pipe is provided on the collector. The materials participating in the reaction enter the reactor from the feed port and react under the action of the catalyst. The liquid generated by the reaction falls on the liquid collector and flows through the drain pipe and enters the collection tank. However, the reaction catalyst in the liquid collector blocks the drain hole, causing the reacted materials to aggregate inside, resulting in poor reaction effect. Utility Model Content
[0003] The purpose of the present invention is to address the above-mentioned defects of the prior art and to provide a catalyst fixed-bed reaction device for isobutylene production, which has a simple structure and can prevent the blockage of the discharge pipe and avoid the problem of the reaction material being accumulated inside and causing poor reaction effect.
[0004] The utility model discloses a catalyst fixed bed reaction device for isobutylene production, and its technical solution is as follows: comprising a shell (1), a feed pipe (2), a liquid collector (3), an upper alumina filter element (4), a coolant inlet pipe (5), a coolant outlet pipe (6), a reactor body (8), a lower alumina filter element (9), and a feed port (10), wherein the reactor body (8) is installed in the inner cavity of the shell (1), the feed port (10) is provided at the upper end of the shell (1), and a liquid collector (3) is installed on the feed port (10). A cover (12) is installed, a feed pipe (2) is installed on the upper part of the cover (12), an upper alumina filter element (4) is installed on the upper side of the inner cavity of the reactor body (8), and a lower alumina filter element (9) is installed on the lower side, and a solid catalyst is filled between the upper alumina filter element (4) and the lower alumina filter element (9); a liquid collector (3) is installed at the lower end of the reactor body (8), a coolant inlet pipe (5) is provided on the lower side of the shell (1), and a coolant outlet pipe (6) is provided on the upper side of the shell (1).
[0005] Preferably, a thermal insulation layer (7) is installed on the outer wall of the shell (1).
[0006] Preferably, a lower sealing cap (11) is installed between the lower side of the reactor body (8) and the lower end of the shell (1).
[0007] Preferably, the liquid collector (3) comprises a fixed pressure cap (3.1), a liquid discharge pipe (3.2), a liquid storage tank (3.4), and a liquid collection tray (3.5); the fixed pressure cap (3.1) is mounted on the lower end of the reactor body (8); the liquid storage tank (3.4) is mounted on the lower portion of the reactor body (8); the liquid collection tray (3.5) is disposed above the liquid storage tank (3.4); and the liquid discharge pipe (3.2) is disposed on the lower side of the liquid storage tank (3.4).
[0008] Preferably, the inner cavity of the reactor body (8) is provided with a thermocouple thermometer jacket (3.3), and a thermocouple thermometer is installed in the thermocouple thermometer jacket (3.3).
[0009] Preferably, the liquid collecting tray (3.5) is a bell-mouth structure, and one or more liquid through holes (3.5.1) are provided on the liquid collecting tray (3.5).
[0010] The beneficial effects of the present invention are as follows: the temperature inside the shell is ensured by introducing a coolant into the shell, the materials participating in the reaction enter the interior of the reactor body from the feed pipe, react under the action of the catalyst between the upper alumina filter element and the lower alumina filter element, a thermocouple thermometer is installed in the thermocouple thermometer jacket to measure the reaction temperature, the liquid generated by the reaction falls into the liquid collector and then flows through the drain pipe and is discharged; since the lower alumina filter element is provided above the liquid collector, the catalyst can be prevented from blocking the drain pipe, thereby avoiding the problem of poor reaction effect caused by the internal aggregation of the reacted materials, thereby better ensuring the quality of isobutylene production. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural diagram of the utility model;
[0012] Figure 2 It is a structural diagram of the liquid collector;
[0013] In the figure above: shell 1, feed pipe 2, liquid collector 3, upper alumina filter element 4, coolant inlet pipe 5, coolant outlet pipe 6, insulation layer 7, reactor body 8, lower alumina filter element 9, feed port 10, lower sealing cap 11, upper cover 12, fixed pressure cap 3.1, drain pipe 3.2, thermocouple thermometer jacket 3.3, downpipe 3.4, liquid collection tray 3.5, liquid storage tank 3.6, liquid through hole 3.5.1. DETAILED DESCRIPTION
[0014] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.
[0015] Example 1, with reference to Figure 1 and Figure 2 The utility model mentions a catalyst fixed bed reaction device for isobutylene production, comprising a shell 1, a feed pipe 2, a liquid collector 3, an upper alumina filter element 4, a coolant inlet pipe 5, a coolant outlet pipe 6, a reactor body 8, a lower alumina filter element 9, and a feed port 10. The reactor body 8 is installed in the inner cavity of the shell 1, and the upper end of the shell 1 is provided with a feed port 10. An upper cover 12 is installed on the feed port 10, and the feed pipe 2 is installed on the upper part of the upper cover 12. The upper alumina filter element 4 is installed on the upper side of the inner cavity of the reactor body 8, and the lower alumina filter element 9 is installed on the lower side. Solid catalyst is filled between the upper alumina filter element 4 and the lower alumina filter element 9. The upper alumina filter element 4 and the lower alumina filter element 9 are used to disperse the reaction materials and prevent catalyst leakage; the liquid collector 3 is installed at the lower end of the reactor body 8, the lower side of the shell 1 is provided with a coolant inlet pipe 5, and the upper side of the shell 1 is provided with a coolant outlet pipe 6.
[0016] The outer wall of the shell 1 is provided with a heat-insulating layer 7 for better heat-insulating effect.
[0017] A lower sealing cap 11 is installed between the lower side of the above-mentioned reactor body 8 and the lower end of the shell 1. In addition, the upper and lower alumina filter elements need to be wrapped with 3 to 4 turns of polytetrafluoroethylene sealing tape during installation, so that the alumina filter element fits tightly against the inner wall of the tube of the reactor body 8.
[0018] Reference Figure 2 The liquid collector 3 of the present invention includes a fixed pressure cap 3.1, a drainage pipe 3.2, a liquid storage tank 3.4, and a liquid collection tray 3.5. The fixed pressure cap 3.1 is installed at the lower end of the reactor body 8. The liquid storage tank 3.4 is installed at the lower part of the reactor body 8. The liquid collection tray 3.5 is provided above the liquid storage tank 3.4. The drainage pipe 3.2 is provided on the lower side of the liquid storage tank 3.4.
[0019] The inner cavity of the reactor body 8 is provided with a thermocouple thermometer jacket 3.3, and a thermocouple thermometer is installed in the thermocouple thermometer jacket 3.3 for measuring the reaction temperature.
[0020] When the present invention is used, a refrigerant is introduced into the refrigerant inlet pipe 5 of the shell 1, and a refrigerant outlet pipe 6 is provided on the upper side of the shell 1 for discharging the refrigerant, thereby ensuring the temperature inside the shell. The materials participating in the reaction enter the reactor body 8 from the feed pipe 2, and react under the action of the catalyst between the upper alumina filter element 4 and the lower alumina filter element 9. A thermocouple thermometer is installed in the thermocouple thermometer jacket 3.3 to measure the reaction temperature. The liquid generated by the reaction falls into the liquid collector 3 and then flows through the drain pipe 3.2 to be discharged. Since the lower alumina filter element 9 is provided above the liquid collector, the catalyst can be prevented from blocking the drain pipe, thereby avoiding the problem of the reaction material gathering inside and causing poor reaction effect.
[0021] Example 2. A catalyst fixed-bed reaction device for isobutylene production mentioned in the present invention includes a shell 1, a feed pipe 2, a liquid collector 3, an upper alumina filter element 4, a coolant inlet pipe 5, a coolant outlet pipe 6, a reactor body 8, a lower alumina filter element 9, and a feed port 10. The reactor body 8 is installed in the inner cavity of the shell 1, and the upper end of the shell 1 is provided with a feed port 10. An upper cover 12 is installed on the feed port 10, and a feed pipe 2 is installed on the upper part of the upper cover 12. An upper alumina filter element 4 is installed on the upper side of the inner cavity of the reactor body 8, and a lower alumina filter element 9 is installed on the lower side. Solid catalyst is filled between the upper alumina filter element 4 and the lower alumina filter element 9. The upper alumina filter element 4 and the lower alumina filter element 9 are used to disperse the reaction materials and prevent catalyst leakage; a liquid collector 3 is installed at the lower end of the reactor body 8, a coolant inlet pipe 5 is provided on the lower side of the shell 1, and a coolant outlet pipe 6 is provided on the upper side of the shell 1.
[0022] The difference from Example 1 is:
[0023] The liquid collection tray 3.5 mentioned in this embodiment has a bell-mouth structure and is provided with one or more liquid through holes 3.5.1 on the liquid collection tray 3.5. In this way, the liquid can flow downward along the bell-mouth structure and finally flow down through the liquid through holes 3.5.1. This does not affect the outflow of the liquid and also avoids the catalyst blocking the drain pipe, thereby avoiding the problem of post-reaction material accumulation inside and causing poor reaction effect.
[0024] The above description is merely a preferred embodiment of the present invention. Anyone skilled in the art may utilize the above-described technical solutions to modify the present invention or create equivalent technical solutions. Therefore, any simple modifications or equivalent transformations based on the technical solutions of the present invention fall within the scope of protection claimed by the present invention.
Claims
1. A catalyst fixed bed reactor for isobutylene production, characterized by: The invention comprises a shell (1), a feed pipe (2), a liquid collector (3), an upper alumina filter element (4), a coolant inlet pipe (5), a coolant outlet pipe (6), a reactor body (8), a lower alumina filter element (9), and a feed port (10). The reactor body (8) is installed in the inner cavity of the shell (1), the upper end of the shell (1) is provided with a feed port (10), an upper cover (12) is installed on the feed port (10), the feed pipe (2) is installed on the upper part of the upper cover (12), the upper alumina filter element (4) is installed on the upper side of the inner cavity of the reactor body (8), the lower alumina filter element (9) is installed on the lower side, and a solid catalyst is filled between the upper alumina filter element (4) and the lower alumina filter element (9); the lower end of the reactor body (8) is provided with a coolant inlet pipe (5), and the upper side of the shell (1) is provided with a coolant outlet pipe (6).
2. The catalyst fixed bed reactor for isobutylene production according to claim 1, wherein: A thermal insulation layer (7) is installed on the outer wall of the shell (1).
3. The catalyst fixed bed reactor for isobutylene production according to claim 2, wherein: A lower sealing cap (11) is installed between the lower side of the reactor body (8) and the lower end of the shell (1).
4. The catalyst fixed bed reactor for isobutylene production according to claim 3, wherein: The liquid collector (3) comprises a fixed pressure cap (3.1), a liquid discharge pipe (3.2), a liquid storage tank (3.4), and a liquid collection tray (3.5). The fixed pressure cap (3.1) is mounted on the lower end of the reactor body (8). The liquid storage tank (3.4) is mounted on the lower portion of the reactor body (8). The liquid collection tray (3.5) is located above the liquid storage tank (3.4). The liquid discharge pipe (3.2) is located on the lower side of the liquid storage tank (3.4).
5. The catalyst fixed bed reactor for isobutylene production according to claim 4, characterized in that: The inner cavity of the reactor body (8) is provided with a thermocouple thermometer jacket (3.3), and a thermocouple thermometer is installed in the thermocouple thermometer jacket (3.3).
6. The catalyst fixed bed reactor for isobutylene production according to claim 5, characterized in that: The liquid collecting tray (3.5) is a bell-mouth structure, and one or more liquid through holes (3.5.1) are provided on the liquid collecting tray (3.5).