A device for preparing and storing a propylene gas-phase epoxidation catalyst
By designing a propylene gas-phase epoxidation catalyst storage device that includes a feed cylinder and heating wires, the problem of unstable active sites in the storage device was solved, thus achieving catalyst stability maintenance and reducing mechanical wear, and improving the applicability and flexibility of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGXIA BAICHUAN TONG CLEAN ENERGY CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-05-26
AI Technical Summary
Existing equipment for preparing and storing propylene gas-phase epoxidation catalysts is not convenient for periodic activation during storage, and cannot effectively maintain the stability of active sites such as AU-PD alloys.
A storage device comprising a storage tank, a dispensing cylinder, a heating wire, a feed pipe, a discharge pipe, valves, and an integrated sensor was designed. By combining the dispensing cylinder and the heating wire, individual input and output control of the catalyst was achieved, reducing mechanical wear, and temperature was monitored by the integrated sensor.
This approach achieves catalyst stability maintenance and reduces mechanical wear, improves equipment applicability and flexibility, and facilitates the periodic activation and storage of catalysts.
Smart Images
Figure CN224278300U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of propylene gas-phase epoxidation catalyst storage technology, specifically to a propylene gas-phase epoxidation catalyst preparation and storage device. Background Technology
[0002] Propylene gas-phase epoxidation catalysts are solids that act as catalysts in the reaction, helping propylene react with oxygen to produce propylene oxide. They also exhibit high selectivity and activity. When preparing and storing these catalysts, a storage device is required.
[0003] The existing design of storage equipment for propylene gas-phase epoxidation catalysts is not suitable for regular activation during storage, nor for maintaining the stability of active sites such as AU-PD alloys. Therefore, its structure needs to be improved.
[0004] Now, a novel equipment for the preparation and storage of propylene gas-phase epoxidation catalyst is proposed to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a storage device for the preparation of propylene gas-phase epoxidation catalyst, so as to solve the problems mentioned in the background art, such as the inconvenience of periodic activation during storage and the inconvenience of maintaining the stability of active sites such as AU-PD alloy.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a storage device for the preparation of propylene gas-phase epoxidation catalyst, comprising a storage tank and support legs. The support legs are fixedly connected to the bottom of the storage tank. A dispensing cylinder is fixedly connected inside the storage tank. A controller is fixedly installed on the right side of the outside of the storage tank. An integrated sensor is fixedly installed on the inner wall of the storage tank. An air inlet pipe is fixedly connected to the left side of the outside of the storage tank. A first annular pipe is provided outside the storage tank. A diversion pipe is fixedly connected to the top of the first annular pipe. A first valve is fixedly installed outside the diversion pipe. An air inlet pipe is fixedly connected to the right side of the top of the first annular pipe. A second valve is fixedly installed outside the air inlet pipe.
[0007] As a further technical solution of this utility model, the top end of the diversion pipe penetrates the interior of the storage box and is fixedly connected to the dispensing cylinder.
[0008] As a further technical solution of this utility model, a feed pipe is fixedly connected to the top of the storage box, a fourth valve is fixedly installed on the outside of the feed pipe, a second annular pipe is provided at the bottom of the storage box, a discharge pipe is fixedly connected to the right side of the second annular pipe, a feed pipe is fixedly connected to the top of the second annular pipe, and a third valve is fixedly installed on the outside of the feed pipe.
[0009] As a further technical solution of this utility model, an electric heating wire is fixedly connected to the outside of the dispensing cylinder, and six sets of dispensing cylinders are provided, which are evenly distributed inside the storage box.
[0010] As a further technical solution of this utility model, the diversion pipe is provided in six groups, and the diversion pipes are distributed at equal intervals at the top of the first annular pipe.
[0011] As a further technical solution of this utility model, the feeding pipe is provided in six sets, and the feeding pipe is connected to the interior of the distributing cylinder.
[0012] As a further technical solution of this utility model, the top end of the feeding pipe is fixedly connected to the bottom end of the storage box, and the feeding pipe is fixedly connected to the top end of the distributing cylinder.
[0013] As a further technical solution of this utility model, the feed pipe is provided in six sets, and the feed pipe is connected to the inside of the distribution cylinder.
[0014] Compared with the prior art, the beneficial effects of this utility model are: the propylene gas phase epoxidation catalyst preparation and storage device not only realizes the ease of individually inputting mixed gas, which facilitates the maintenance of the stability of active sites and the ease of individually controlling the feeding and discharging, but also facilitates batch storage and reduces the possibility of mechanical wear.
[0015] (1) By setting a first annular pipe, a diversion pipe, a first valve, an air inlet pipe, and a second valve, the external pipe of the mixed gas is connected and fixed to the air inlet pipe. Opening the second valve allows the mixed gas to be injected into the first annular pipe. Opening the first valve allows the mixed gas to be injected into the distribution cylinder through the diversion pipe, so that the entry of the mixed gas can be controlled separately according to the situation inside the distribution cylinder, which is convenient to maintain the stability of the active sites.
[0016] (2) By setting up a distribution cylinder, heating wire, feed pipe, fourth valve, discharge pipe, third valve, and second annular pipe, the external pipe is connected to the feed pipe, the fourth valve is opened to facilitate the catalyst being put into the distribution cylinder, and the third valve can be opened to control the discharge of the catalyst separately when the material is discharged and taken out. After passing through the second annular pipe, the catalyst inside the second annular pipe can be extracted by connecting the discharge pipe to the external pump body, making it more suitable for use.
[0017] (3) By setting up a distribution cylinder and an electric heating wire, the electric heating wire is fixedly connected to the outside of the distribution cylinder. There are six sets of distribution cylinders, which are evenly distributed inside the storage box. During storage, the catalyst particles can be stored separately, which reduces mechanical wear during storage and makes storage more flexible and applicable. Attached Figure Description
[0018] Figure 1This is a frontal cross-sectional view of the present invention.
[0019] Figure 2 This is a top view of the connection between the first annular tube and the storage box of this utility model;
[0020] Figure 3 This is a bottom view schematic diagram of the connection between the second annular tube and the storage box of this utility model;
[0021] Figure 4 This is a front view structural diagram of the connection between the dispensing cylinder and the heating wire of this utility model.
[0022] In the diagram: 1. Storage tank; 2. Distributor cylinder; 3. Heating wire; 4. First annular tube; 5. Diverter pipe; 6. First valve; 7. Air inlet pipe; 8. Second valve; 9. Support leg; 10. Feed pipe; 11. Third valve; 12. Second annular tube; 13. Discharge pipe; 14. Integrated sensor; 15. Controller; 16. Feed pipe; 17. Fourth valve; 18. Air inlet pipe. Detailed Implementation
[0023] 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.
[0024] Please see Figure 1-4 This utility model provides an embodiment of a storage device for the preparation of propylene gas-phase epoxidation catalyst, including a storage tank 1 and a support leg 9. The support leg 9 is fixedly connected to the bottom end of the storage tank 1. A dispensing cylinder 2 is fixedly connected inside the storage tank 1. A controller 15 is fixedly installed on the right side of the outside of the storage tank 1. An integrated sensor 14 is fixedly installed on the inner wall of the storage tank 1. An air inlet pipe 18 is fixedly connected to the left side of the outside of the storage tank 1. A first annular pipe 4 is provided outside the storage tank 1. A diversion pipe 5 is fixedly connected to the top end of the first annular pipe 4. A first valve 6 is fixedly installed outside the diversion pipe 5. An air inlet pipe 7 is fixedly connected to the right side of the top end of the first annular pipe 4. A second valve 8 is fixedly installed outside the air inlet pipe 7.
[0025] The top end of the diversion pipe 5 penetrates the interior of the storage box 1 and is fixedly connected to the dispensing cylinder 2;
[0026] Six sets of diversion pipes 5 are provided, and the diversion pipes 5 are evenly distributed at the top of the first annular pipe 4;
[0027] Specifically, such as Figure 1 and Figure 2As shown, during use, the external pipe of the mixed gas is connected and fixed to the air inlet pipe 7. The second valve 8 is opened to inject the mixed gas into the first annular pipe 4. The first valve 6 is opened to conveniently inject the mixed gas into the distribution cylinder 2 through the distribution pipe 5, so that the entry of the mixed gas can be controlled individually according to the situation inside the distribution cylinder 2, which is convenient to maintain the stability of the active sites.
[0028] A feed pipe 16 is fixedly connected to the top of the storage tank 1. A fourth valve 17 is fixedly installed on the outside of the feed pipe 16. A second annular pipe 12 is provided at the bottom of the storage tank 1. A discharge pipe 13 is fixedly connected to the right side of the second annular pipe 12. A discharge pipe 10 is fixedly connected to the top of the second annular pipe 12. A third valve 11 is fixedly installed on the outside of the discharge pipe 10.
[0029] The feeding pipe 10 is provided with six sets, and the feeding pipe 10 is connected to the inside of the distributing cylinder 2;
[0030] The top end of the feeding pipe 10 is fixedly connected to the bottom end of the storage box 1, and the feeding pipe 16 is fixedly connected to the top end of the distributing cylinder 2.
[0031] The feed pipe 16 is provided with six sets, and the feed pipe 16 is connected to the inside of the distribution cylinder 2;
[0032] Specifically, such as Figure 1 and Figure 3 As shown, the external pipe is connected to the feed pipe 16, and the fourth valve 17 is opened to facilitate the placement of the catalyst into the distribution cylinder 2. When discharging and retrieving the catalyst, the third valve 11 can be opened to control the feeding of the catalyst separately. After passing through the second annular pipe 12, the catalyst inside the second annular pipe 12 can be extracted by connecting the discharge pipe 13 to the external pump body, making it more suitable for use.
[0033] The external of the dispensing cylinder 2 is fixedly connected with an electric heating wire 3. There are six sets of dispensing cylinders 2, which are evenly distributed inside the storage box 1.
[0034] Specifically, such as Figure 1 and Figure 4 As shown, an electric heating wire 3 is fixedly connected to the outside of the distributing cylinder 2. There are six sets of distributing cylinders 2, which are evenly distributed inside the storage box 1. This allows the catalyst particles to be stored separately, reducing mechanical wear during storage and making the storage more flexible and applicable.
[0035] Working Principle: In use, firstly, connect the external pipe to the feed pipe 16 and open the fourth valve 17 to facilitate the addition of catalyst into the distribution cylinder 2. Finally, when discharging, open the third valve 11 to control the catalyst feeding independently. After passing through the second annular pipe 12, the catalyst can be extracted from inside the second annular pipe 12 by connecting the discharge pipe 13 to the external pump body, making it more suitable for use. Then, using the heating wire 3 fixedly connected to the outside of the distribution cylinder 2, and the six sets of distribution cylinders 2 evenly distributed inside the storage tank 1, it can... During storage, the catalyst particles can be stored separately to reduce mechanical wear during storage. The internal temperature can be sensed in real time by the integrated sensor 14. Cooling air can be injected into the storage box 1 using the air inlet pipe 18. Finally, when in use, the mixed gas external pipe is connected and fixed to the air inlet pipe 7. The second valve 8 is opened to inject the mixed gas into the first annular pipe 4. The first valve 6 is opened to easily inject the mixed gas into the distribution cylinder 2 through the distribution pipe 5. This allows the entry of the mixed gas to be controlled individually according to the internal conditions of the distribution cylinder 2, which helps to maintain the stability of the active sites.
[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A storage device for the preparation of a propylene gas-phase epoxidation catalyst, comprising a storage tank (1) and support legs (9), characterized in that: The storage box (1) is fixedly connected to the bottom end of the support leg (9), the storage box (1) is fixedly connected to the inside of the storage box (1), the controller (15) is fixedly installed on the right side of the outside of the storage box (1), the integrated sensor (14) is fixedly installed on the inner wall of the storage box (1), the air inlet pipe (18) is fixedly connected to the left side of the outside of the storage box (1), the storage box (1) is provided with a first annular pipe (4), the top end of the first annular pipe (4) is fixedly connected to a diversion pipe (5), the outside of the diversion pipe (5) is fixedly installed with a first valve (6), the right side of the top end of the first annular pipe (4) is fixedly connected to an air inlet pipe (7), and the outside of the air inlet pipe (7) is fixedly installed with a second valve (8).
2. The propylene gas-phase epoxidation catalyst preparation and storage device according to claim 1, characterized in that: The top end of the diversion pipe (5) penetrates the interior of the storage box (1) and is fixedly connected to the dispensing cylinder (2).
3. The propylene gas-phase epoxidation catalyst preparation and storage device according to claim 1, characterized in that: The top of the storage tank (1) is fixedly connected to a feed pipe (16), and a fourth valve (17) is fixedly installed on the outside of the feed pipe (16). The bottom of the storage tank (1) is provided with a second annular pipe (12), and a discharge pipe (13) is fixedly connected to the right side of the second annular pipe (12). The top of the second annular pipe (12) is fixedly connected to a discharge pipe (10), and a third valve (11) is fixedly installed on the outside of the discharge pipe (10).
4. The propylene gas-phase epoxidation catalyst preparation and storage device according to claim 1, characterized in that: The external of the dispensing cylinder (2) is fixedly connected with an electric heating wire (3), and there are six sets of dispensing cylinders (2). The dispensing cylinders (2) are evenly distributed inside the storage box (1).
5. The propylene gas-phase epoxidation catalyst preparation and storage device according to claim 1, characterized in that: The diversion pipe (5) is provided in six groups, and the diversion pipe (5) is distributed at equal intervals at the top of the first annular pipe (4).
6. The propylene gas-phase epoxidation catalyst preparation and storage device according to claim 3, characterized in that: The feeding pipe (10) is provided in six sets, and the feeding pipe (10) is connected to the interior of the distributing cylinder (2).
7. The propylene gas-phase epoxidation catalyst preparation and storage device according to claim 3, characterized in that: The top end of the feeding pipe (10) is fixedly connected to the bottom end of the storage box (1), and the feeding pipe (16) is fixedly connected to the top end of the distributing cylinder (2).
8. The propylene gas-phase epoxidation catalyst preparation and storage device according to claim 3, characterized in that: The feed pipe (16) is provided in six sets, and the feed pipe (16) is connected to the interior of the distribution cylinder (2).