Cooling device for preparing high-purity propionitrile
The cooling device with a circulating water system and anti-corrosion coating effectively cools propionitrile, addressing decomposition issues and ensuring purity during preparation.
Patent Information
- Application Number
- CN202420050937.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-09
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-01-09
AI Technical Summary
Existing methods fail to efficiently cool propionitrile during its preparation, leading to potential decomposition due to high temperature conditions.
A cooling device comprising a cooling shell, circulating water inlet and outlet pipes, a coolant, and an anti-corrosion coating, with a circulating water system to maintain continuous cooling and prevent decomposition.
Ensures effective cooling of propionitrile, maintaining its purity by preventing decomposition and facilitating easy maintenance and replacement of components.
Smart Images
Figure CN222210920U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of propionitrile preparation, in particular to a cooling device for preparing high-purity propionitrile. Background Art
[0002] Propylonitrile is a commonly used reagent in organic synthesis, chromatography, biochemistry and medical diagnosis. It is a colorless, transparent, toxic liquid that tastes similar to cyanide, is flammable, and has good solubility in many organic and inorganic substances.
[0003] When preparing propionitrile, it needs to be cooled in time. Propionitrile has high chemical reaction activity and is prone to decomposition under high temperature conditions. Therefore, it needs to be cooled in time by equipment after it is produced. Utility Model Content
[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a cooling device for preparing high-purity propionitrile to solve the problems raised in the background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a cooling device for preparing high-purity propionitrile, comprising a cooling shell, a circulating water inlet pipe, a coolant, a cooling pipe, an anti-corrosion coating and a circulating water outlet pipe, wherein a first opening is provided at the top of the cooling shell, a circulating water inlet pipe is fixed in the first opening, a second opening is provided at the bottom of the cooling shell, a circulating water outlet pipe is fixed in the second opening, a cooling pipe is fixed in the center of the cooling shell, an inner wall of the cooling pipe is coated with an anti-corrosion coating, and the interior of the cooling shell is filled with coolant.
[0006] As a further solution of the utility model: the circulating water inlet and the circulating water outlet are connected by a circulating pipe, and a supporting leg is fixed to the bottom end of the cooling shell. The supporting legs are provided in four groups and are symmetrically arranged at the bottom end of the cooling shell.
[0007] As a further solution of the utility model: the circulating water inlet pipe port and the circulating water outlet pipe port have the same structure, the circulating water inlet pipe port includes an inner tube, a first thread groove, an outer tube, a second thread groove and a membrane valve, the first thread groove is opened at the tail end of the inner tube, the second thread groove is opened at the front end of the outer tube, and a membrane valve is fixed inside the tail end of the inner tube.
[0008] As a further solution of the utility model: the circulation pipeline includes a pipeline body and a limiting protrusion, one end of the pipeline body is fixedly connected to the limiting protrusion, and the limiting protrusions are provided in a plurality of groups and are evenly arranged around the two ends of the pipeline body.
[0009] Compared with the prior art, the beneficial effects of the utility model are:
[0010] The invention discloses a cooling device for preparing high-purity propionitrile, comprising a cooling shell, a circulating water inlet pipe, a coolant, a cooling pipeline, an anti-corrosion coating and a circulating water outlet pipe. The top of the cooling shell is provided with a first opening, in which a circulating water inlet pipe is fixed, the bottom of the cooling shell is provided with a second opening, in which a circulating water outlet pipe is fixed, a cooling pipeline is fixed in the center of the cooling shell, the inner wall of the cooling pipeline is coated with an anti-corrosion coating, and the cooling shell is filled with coolant. When in use, an external propionitrile feeding pipe and a receiving pipe are respectively connected to two ends of the cooling pipeline, and the coolant cools the propionitrile in the cooling pipeline. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a front cross-sectional view of a cooling device for preparing high-purity propionitrile according to the utility model;
[0012] Figure 2 This is a schematic diagram of a circulating water outlet of a cooling device for preparing high-purity propionitrile according to the utility model;
[0013] Figure 3 This is a disassembled diagram of the circulating water outlet of the cooling device for preparing high-purity propionitrile of the utility model;
[0014] Figure 4 The utility model is a schematic diagram of the circulation pipeline of the cooling device for preparing high-purity propionitrile.
[0015] As shown in the figure: 1. Cooling shell; 2. Circulating water inlet pipe; 3. Coolant; 4. Cooling pipeline; 5. Anti-corrosion coating; 6. Circulating water outlet pipe; 7. Circulating pipeline; 8. Support leg; 9. Inner pipe; 10. First thread groove; 11. Outer pipe; 12. Second thread groove; 13. Membrane valve; 14. Pipe body; 15. Limiting bump. DETAILED DESCRIPTION
[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0017] See also Figures 1 to 4 In an embodiment of the utility model, a cooling device for preparing high-purity propionitrile comprises a cooling shell 1, a circulating water inlet pipe port 2, a coolant 3, a cooling pipe 4, an anti-corrosion coating 5 and a circulating water outlet pipe port 6. The top of the cooling shell 1 is provided with a first opening, in which the circulating water inlet pipe port 2 is fixed, the bottom of the cooling shell 1 is provided with a second opening, in which the circulating water outlet pipe port 6 is fixed, a cooling pipe 4 is fixed in the center of the cooling shell 1, the inner wall of the cooling pipe 4 is coated with the anti-corrosion coating 5, and the cooling shell 1 is filled with the coolant 3. When in use, the external propionitrile feeding pipe and the receiving pipe are respectively connected to the two ends of the cooling pipe 4, and at this time, the coolant 3 cools the propionitrile in the cooling pipe 4.
[0018] The circulating water inlet pipe port 2 and the circulating water outlet pipe port 6 are connected by a circulating pipe 7. A supporting leg 8 is fixed to the bottom end of the cooling shell 1. The supporting leg 8 is provided with four groups and is symmetrically arranged at the bottom end of the cooling shell 1. The coolant 3 flows into the circulating pipe 7 through the circulating water outlet pipe port 6, flows in the circulating pipe 7 through the water pump in the circulating pipe 7, and is pumped to the circulating water inlet pipe port 2, so that the coolant 3 can flow continuously inside the cooling shell 1 and the circulating pipe 7, thereby realizing the heat dissipation treatment of propionitrile.
[0019] The circulating water inlet pipe port 2 and the circulating water outlet pipe port 6 have the same structure. The circulating water inlet pipe port 2 includes an inner tube 9, a first thread groove 10, an outer tube 11, a second thread groove 12 and a membrane valve 13. The first thread groove 10 is opened at the tail end of the inner tube 9, and the second thread groove 12 is opened at the front end of the outer tube 11. A membrane valve 13 is fixed inside the tail end of the inner tube 9. The principle of the membrane valve 13 is the same as that of the "scream" beverage. After the water pump stops working, the membrane valve 13 is closed, and the coolant 3 can stop flowing in time. The inner and outer double-layer spiral structure of the circulating water inlet pipe port 2 is also convenient for subsequent replacement and maintenance.
[0020] The circulation pipe 7 includes a pipe body 14 and a limiting protrusion 15. One end of the pipe body 14 is fixedly connected to the limiting protrusion 15. The limiting protrusions 15 are provided in several groups and are evenly arranged around the two ends of the pipe body 14. When installing, the limiting protrusions 15 at the ends of the circulation pipe 7 are inserted into the inner tube 9 to be fixed. The limiting protrusions 15 have a large friction force and are not easy to fall off.
Claims
1. A cooling device for preparing high-purity propionitrile, comprising a cooling housing (1), a circulating water inlet pipe (2), a coolant (3), a cooling pipeline (4), an anti-corrosion coating (5) and a circulating water outlet pipe (6), characterized in that: The cooling shell (1) has a first opening at the top end, a circulating water inlet pipe (2) is fixed in the first opening, a second opening is formed at the bottom end of the cooling shell (1), a circulating water outlet pipe (6) is fixed in the second opening, a cooling pipe (4) is fixed in the center of the cooling shell (1), an anti-corrosion coating (5) is applied to the inner wall of the cooling pipe (4), and the cooling shell (1) is filled with a coolant (3).
2. A cooling device for preparing high-purity propionitrile according to claim 1, characterized in that: The circulating water inlet pipe (2) and the circulating water outlet pipe (6) are connected via a circulating pipe (7); a supporting leg (8) is fixed to the bottom end of the cooling shell (1); and the supporting leg (8) is provided with four groups and is symmetrically arranged at the bottom end of the cooling shell (1).
3. A cooling device for preparing high-purity propionitrile according to claim 1, characterized in that: The circulating water inlet pipe (2) and the circulating water outlet pipe (6) have the same structure. The circulating water inlet pipe (2) comprises an inner tube (9), a first thread groove (10), an outer tube (11), a second thread groove (12) and a membrane valve (13). The first thread groove (10) is provided at the rear end of the inner tube (9), the second thread groove (12) is provided at the front end of the outer tube (11), and the membrane valve (13) is fixed inside the rear end of the inner tube (9).
4. A cooling device for preparing high-purity propionitrile according to claim 2, characterized in that: The circulation pipeline (7) comprises a pipeline body (14) and a limiting protrusion (15); one end of the pipeline body (14) is fixedly connected to the limiting protrusion (15); and the limiting protrusions (15) are provided in a plurality of groups and are evenly arranged around the two ends of the pipeline body (14).