Efficient selective molecular sieve gel-forming crystallization kettle
By improving the gel crystallization kettle of the selective molecular sieve by adopting a jacketed heating system, a crescent-shaped guide plate and a stirring system, the problems of slow heating speed and material blockage at the discharge port were solved, achieving more efficient heating and stable operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-03-24
AI Technical Summary
The selective molecular sieve gel crystallization reactor suffers from slow heating speed and solid material clogging of the discharge port during use.
A jacketed heating system is adopted, combined with a crescent-shaped guide plate and a stirring system. It utilizes both steam and heat transfer oil for heating, adds a receiving tray to prevent material blockage, and improves the stirring effect.
It improves heating speed and heat supply efficiency, reduces the possibility of outlet blockage, and enhances the operational stability of the device.
Smart Images
Figure CN224025008U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of efficient selection type molecular sieve gelation crystallization kettle, belong to chemical equipment field. BACKGROUND
[0002] Selection type molecular sieve is one of the most important catalytic materials in petroleum deep processing and petrochemical reaction, which is widely used in aromatization, isomerization, alkylation, oil refining, diesel oil condensation reduction and other industrial processes. Most of the production of selection type molecular sieve adopts hydrothermal synthesis process, and the leading equipment of the production process is gelation crystallization kettle, which is in the first process in the whole production process, and the length of gelation crystallization time determines the yield and quality of product.
[0003] In the current use process of selection type molecular sieve gelation crystallization kettle, there are problems of slow heating speed and solid material blocking discharge port. The slow heating speed and low thermal efficiency have a great impact on production. During the feeding process, workers often forget to start stirring, solid materials quickly deposit and block the discharge port, which leads to the failure of subsequent processes, and the discharge port needs to be cleaned, which is time-consuming and labor-intensive, and seriously affects production. SUMMARY
[0004] According to the problems described in the background, the utility model solves the problems of:
[0005] In the current use process of selection type molecular sieve gelation crystallization kettle, there are problems of slow heating speed and solid material blocking discharge port.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0007] An efficient selection type molecular sieve gelation crystallization kettle, comprising a crystallization kettle body, a stirring system and a heating system. The heating system adopts jacket heating, and the jacket is provided with moon-shaped guide vanes arranged alternately upward and downward. The stirring system comprises a stirring motor, a stirring rod and a stirring paddle. The stirring motor is arranged at the top of the crystallization kettle body, the stirring paddle is connected to the stirring motor through the stirring rod, and the stirring paddle is arranged inside the crystallization kettle body. The crystallization kettle body is provided with a discharge port at the bottom and a feeding port at the top. The feeding port is connected to compressed air line and material line, and the discharge port is connected to discharge line and steam line. The stirring rod is fixed with a receiving disc at the bottom, and a gap is left between the receiving disc and the inner wall of the crystallization kettle body, so that the material can reach the discharge port through the gap.
[0008] The original jacket running process, heat medium stays in the jacket for a short time, and the jacket area is limited, the temperature of different areas is different, the heat distribution is uneven, which leads to the heat supply effect and efficiency of the jacket are not good. The crescent-shaped guide plate is a jacket guide plate developed by the plate heat exchanger, which makes the heat medium flow through each area of the jacket according to the guide of the guide plate, which not only solves the problem of uneven heating, but also solves the problem of short residence time of the heat medium in the jacket.
[0009] The receiving disc effectively blocks the solid material from depositing to the discharge port, and has good effect in actual application. Even if a small amount of solid material is discharged from the discharge port, the steam can blow away the small amount of material in the discharge port during the initial steam warming process, and the production will not be affected.
[0010] The utility model discloses a steam line is provided, adopts the heating mode of steam and heat conducting oil, first directly heats to 100 degrees or so with steam, then heats to 190 degrees or so through heat conducting oil, and the heating time is shortened by 5 hours or so compared with the traditional heating time.
[0011] Preferably, the stirring paddle is provided with two or three sets.
[0012] Preferably, the jacket adopts heat conducting oil as a heat medium, and the oil inlet of the jacket is arranged at the bottom of the jacket, and the oil outlet is arranged at the top of the jacket.
[0013] Preferably, baffles are arranged on the inner walls of the two sides of the crystallization kettle body. The baffles can improve the stirring effect, disperse the caked material, and make the stirring more uniform.
[0014] The utility model discloses a steam line is provided, adopts the heating mode of steam and heat conducting oil, first directly heats to 100 degrees or so with steam, then heats to 190 degrees or so through heat conducting oil, and the heating time is shortened by 5 hours or so compared with the traditional heating time.
[0015] The utility model discloses a steam line is provided, adopts the heating mode of steam and heat conducting oil, first directly heats to 100 degrees or so with steam, then heats to 190 degrees or so through heat conducting oil, and the heating time is shortened by 5 hours or so compared with the traditional heating time. ACCURACY OF DRAWINGS
[0016] Figure 1 It is a schematic view of the utility model
[0017] Figure 2 It is a top view contour drawing of the crescent-shaped guide plate
[0018] In the drawing: 1 is the crystallization kettle body;11 is the feeding port;111 is the compressed air line;112 is the material line;12 is the discharge port;121 is the discharge line;122 is the steam line;2 is the jacket;21 is the crescent-shaped guide plate;22 is the oil inlet;23 is the oil outlet;31 is the stirring motor;32 is the stirring rod;33 is the stirring paddle;4 is the receiving disc;5 is the baffle. DETAILED DESCRIPTION
[0019] Embodiment 1
[0020] The application discloses a high-efficiency type-selective molecular sieve gel-crystallization kettle which comprises a crystallization kettle body 1, a stirring system and a heating system, the heating system adopts a jacket 2 for heating, the jacket 2 is internally provided with crescent-shaped flow guides 21 arranged alternately in an up-down mode, the stirring system comprises a stirring motor 31, a stirring rod 32 and a stirring paddle 33, the stirring motor 31 is arranged at the top of the crystallization kettle body 1, the stirring paddle 33 is connected with the stirring motor 31 through the stirring rod 32, and the stirring paddle 33 is arranged in the crystallization kettle body 1, a discharge port 12 is formed in the bottom of the crystallization kettle body 1, a feeding port 11 is formed in the top of the crystallization kettle body 1, the feeding port 11 is connected with a compressed air line 111 and a material line 112, the discharge port 12 is connected with a discharge line 121 and a steam line 122, the stirring rod 32 is fixedly provided with a material receiving disc 4, a gap is formed between the material receiving disc 4 and the inner wall of the crystallization kettle body 1, and materials can reach the discharge port 12 through the gap.
[0021] The stirring paddle 33 is provided with two sets or three sets.
[0022] The jacket 2 adopts heat-conducting oil as a heating medium, an oil inlet 22 of the jacket is arranged at the bottom of the jacket, and an oil outlet 23 is arranged at the top of the jacket.
[0023] The crystallization kettle body 1 is provided with baffles 5 on the inner walls of two sides.
[0024] The jacket 2 adopts heat-conducting oil as a heating medium, an oil inlet 22 of the jacket is arranged at the bottom of the jacket, and an oil outlet 23 is arranged at the top of the jacket. The crystallization kettle body 1 is provided with baffles 5 on the inner walls of two sides.
Claims
1. A high-efficiency shape-selective molecular sieve gel crystallization reactor, comprising a crystallization reactor body (1), a stirring system, and a heating system, characterized in that, The heating system uses a jacket (2) for heating, and the jacket (2) is provided with crescent-shaped guide plates (21) arranged alternately up and down; the stirring system includes a stirring motor (31), a stirring rod (32) and a stirring paddle (33), the stirring motor (31) is located at the top of the crystallization kettle body (1), the stirring paddle (33) is connected to the stirring motor (31) through the stirring rod (32), and the stirring paddle (33) is located inside the crystallization kettle body (1); the crystallization kettle body The body (1) has a discharge port (12) at the bottom and a feed port (11) at the top. The feed port (11) is connected to the compressed air line (111) and the material line (112). The discharge port (12) is connected to the discharge line (121) and the steam line (122). The bottom of the stirring rod (32) is fixed with a receiving plate (4). There is a gap between the receiving plate (4) and the inner wall of the crystallization kettle body (1), so that the material can reach the discharge port (12) through the gap.
2. The high-efficiency shape-selective molecular sieve gelation and crystallization reactor according to claim 1, characterized in that, The stirring paddle (33) is provided in two or three sets.
3. The high-efficiency shape-selective molecular sieve gelation and crystallization reactor according to claim 1, characterized in that, The jacket (2) uses heat transfer oil as the heating medium. The oil inlet (22) of the jacket is located at the bottom of the jacket, and the oil outlet (23) is located at the top of the jacket.
4. The high-efficiency shape-selective molecular sieve gelation and crystallization reactor according to claim 1, characterized in that, The crystallization reactor body (1) is provided with baffles (5) on both sides of its inner wall.