Distillation tower

Abstract

The utility model provides a distillation tower which comprises a distillation kettle, a top cover is mounted at the upper end of the distillation kettle, an inserting sleeve is mounted at the top of the top cover, a connecting pipe is inserted in the inserting sleeve, a vertical part, far away from the inserting sleeve, of the connecting pipe penetrates through a cooling water jacket, a lower supporting plate is fixedly connected to the outer surface of the inserting sleeve, and the lower supporting plate is fixedly connected to the lower supporting plate. An upper supporting plate is arranged on the upper side of the lower supporting plate, the end, away from the connecting pipe, of the upper supporting plate is fixedly connected with the end, away from the inserting sleeve, of the lower supporting plate in the mode that a bolt is matched with a nut, the upper supporting plate and the lower supporting plate both penetrate through a rectangular opening, and a supporting lug fixedly connected with the heat insulation disc is arranged on one side of the rectangular opening; one side surface of the support lug is in threaded connection with a positioning screw for limiting the relative position of the support lug and the structure formed by the upper support plate and the lower support plate, and the connecting structure has the following beneficial effects that the bolt for limiting the position of the connecting pipe is far away from the connecting pipe, so that the reliability of the connection between the connecting pipe and the distillation tower is ensured.

Description

Technical Field

[0001] The utility model is a distillation tower, belonging to the technical field of production of glycosyl propylamine compounds. Background Art

[0002] 3-Alkylglycosyloxypropionitrile, Raney-Ni catalyst, and inhibitor NH3·H2O are added to a high-pressure reaction vessel, replaced with N2, stirred, and heated to 60-90°C. H2 is then introduced into the high-pressure reaction vessel. After reacting for 5-9 hours, the product 3-alkylglycosyloxypropylamine is obtained by vacuum distillation to remove ammonia after discharging the material. The distillation tower is a commonly used equipment for the production of alkyl propylamine compounds. A connecting pipe is usually installed on the top of the distillation tower using multiple bolts, wherein one end of the connecting pipe passes through a cooling water jacket, and the connecting pipe serves to discharge high-temperature material steam in the distillation tower. When the high-temperature steam flows through the connecting pipe, the temperature of the connecting pipe will increase. After the connecting pipe is installed on the top of the distillation tower using bolts, the bolts will oxidize and rust prematurely due to being in a high-temperature environment for a long time, affecting the reliability of the connection between the connecting pipe and the distillation tower. Therefore, it is necessary to design a distillation tower that reduces the influence of heat on the bolts. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a distillation tower to solve the problems raised in the above-mentioned background technology. The utility model makes the bolts that limit the position of the connecting pipe away from the connecting pipe, which is conducive to ensuring the reliability of the connection between the connecting pipe and the distillation tower.

[0004] In order to achieve the above-mentioned purpose, the utility model is realized by the following technical scheme: a distillation tower, including a distillation kettle, a heating element is sleeved on the distillation kettle, a top cover is installed on the upper end of the distillation kettle, a plug sleeve is installed on the top of the top cover, a connecting pipe is inserted in the plug sleeve, the connecting pipe is a "U"-shaped structure, a vertical part of the connecting pipe away from the plug sleeve passes through the cooling water jacket, a drain port is installed on the outer surface of the upper end of the cooling water jacket, a water inlet is installed on the outer surface of the lower end of the cooling water jacket, and the outer surface of the plug sleeve is connected A lower support plate is fixed, an upper support plate is provided on the upper side of the lower support plate, one end of the upper support plate is connected and fixed to the connecting pipe, the end of the upper support plate away from the connecting pipe is connected and fixed to the end of the lower support plate away from the plug-in sleeve by means of bolts and nuts, the upper support plate and the lower support plate both pass through a rectangular opening, the rectangular opening is opened in the middle of a side surface of the insulation disk, one side of the rectangular opening is provided with a support ear connected and fixed to the insulation disk, and one side surface of the support ear is threadedly connected with a positioning screw for limiting the relative position of the support ear and the upper and lower support plates to form a structure.

[0005] Furthermore, an external threaded ring is fixedly connected to one side of the insulation disk facing the support ear, and the external threaded ring is concentrically arranged with the insulation disk. The external threaded ring is threadedly connected to an insulation sleeve for hiding bolts, nuts and positioning screws. The end of the insulation sleeve facing the insulation disk is open, and the inner surface of the insulation sleeve is processed with an internal thread matching the external threaded ring.

[0006] Furthermore, a threaded hole penetrating the support ear is formed on one side surface of the support ear, and the positioning screw is threadedly connected in the threaded hole.

[0007] Furthermore, an upper hole is provided on the side of the upper surface of the upper support plate away from the connecting pipe, and a lower hole aligned with the upper hole is provided on the side of the upper surface of the lower support plate away from the plug sleeve, and one end of the bolt passes through the lower hole and the upper hole in sequence and is threadedly connected with a nut.

[0008] Furthermore, a plurality of plug posts are evenly installed on the lower surface of the upper support plate, a plurality of insertion holes matching with the plug posts are evenly opened on the upper surface of the lower support plate, and the plug posts are inserted into the insertion holes.

[0009] Furthermore, the position where the plug column is installed on the lower support plate is recessed upward to form a blind hole, and the upper end of the plug column is fixed in the blind hole.

[0010] Furthermore, a feeding pipe is installed on the outer surface of the upper end of the distillation kettle, and a discharge valve is installed at the bottom of the distillation kettle.

[0011] Furthermore, the heating element comprises an insulating cylinder, the distillation kettle is provided with an insulating cylinder connected and fixed to the distillation kettle, and a heating resistance wire electrically connected to an external power supply is installed in the space formed by the insulating cylinder and the distillation kettle.

[0012] Beneficial effects of the utility model:

[0013] 1. Insert one end of the connecting pipe into the plug sleeve to realize the connection between the connecting pipe and the space formed by the top cover and the distillation kettle. At this time, the upper support plate and the lower support plate overlap, so that the structure formed by the upper support plate and the lower support plate is inserted into the rectangular opening on the insulation plate. Then, the positioning screws are used to limit the relative position of the insulation plate and the upper and lower support plates. Then, the bolts are passed through the channel formed by the lower hole and the upper hole and the nuts are screwed on. At this time, the bolts and nuts are away from the connecting pipe, thereby reducing the heat radiation on the connecting pipe on the bolts and nuts. At the same time, under the barrier of the insulation plate, the effect of not radiating the heat on the connecting pipe on the bolts and nuts is further improved, so that the bolts that limit the position of the connecting pipe are away from the connecting pipe, preventing the bolts and nuts from premature oxidation and rusting due to high temperature, which is conducive to ensuring the reliability of the connection between the connecting pipe and the distillation tower.

[0014] 2. The heat insulation sleeve is threadedly connected to the external thread ring. At this time, the nuts, bolts, and positioning screws are all in the space formed by the heat insulation disk and the heat insulation sleeve, so that the nuts, bolts, and positioning screws are in a low-temperature oxygen-deficient environment, further improving the effect of protecting the nuts, bolts, and positioning screws.

[0015] 3. The structure formed by the upper support plate and the lower support plate is inserted into the rectangular opening on the insulation plate. At this time, the insulation plate and the fasteners formed by the bolts and nuts jointly limit the relative positions of the upper support plate and the lower support plate, so that the plug column is inserted into the plug hole, and the upper support plate and the lower support plate are quickly aligned. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0017] Figure 1 This is a schematic diagram of the structure of a distillation tower of the utility model;

[0018] Figure 2 This is an enlarged view of point A in a distillation tower of the utility model;

[0019] Figure 3 It is a schematic diagram of the assembly of a support ear, an external thread ring and a heat insulation plate in a distillation tower of the utility model;

[0020] Figure 4 It is a schematic diagram of the assembly of an insert column, an upper support plate and a lower support plate in a distillation tower of the utility model;

[0021] In the figure: 1-distillation kettle, 2-feeding pipe, 3-insulation sleeve, 4-connecting pipe, 5-plug sleeve, 6-top cover, 7-insulation cylinder, 8-discharge valve, 9-water inlet, 10-cooling water jacket, 11-drain outlet, 12-nut, 13-bolt, 14-positioning screw, 15-support ear, 16-external thread ring, 17-upper support plate, 18-lower support plate, 19-insulation plate, 20-threaded hole, 21-rectangular mouth, 22-upper hole, 23-insertion column, 24-lower hole, 25-plug hole. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] See also Figure 1The utility model provides a technical solution: a distillation tower, comprising a distillation kettle 1, a feeding pipe 2 is installed on the outer surface of the upper end of the distillation kettle 1, a discharge valve 8 is installed at the bottom of the distillation kettle 1, and an insulating tube 7 is sleeved on the distillation kettle 1 and fixedly connected to the distillation kettle 1. A heating resistance wire electrically connected to an external power supply is installed in the space formed by the insulating tube 7 and the distillation kettle 1, and the circuit of the heating resistance wire is turned on, so that the heating resistance wire converts electrical energy into thermal energy to heat the glycosyl propylamine compounds in the distillation kettle 1.

[0024] See also Figure 1 A top cover 6 is installed at the upper end of the distillation kettle 1, a plug-in sleeve 5 is installed on the top of the top cover 6, a connecting pipe 4 is inserted in the plug-in sleeve 5, the connecting pipe 4 is a "U"-shaped structure, a vertical portion of the connecting pipe 4 away from the plug-in sleeve 5 passes through the cooling water jacket 10, a drain port 11 is installed on the outer surface of the upper end of the cooling water jacket 10, and a water inlet 9 is installed on the outer surface of the lower end of the cooling water jacket 10. The cooling water enters the space formed by the cooling water jacket 10 and the connecting pipe 4 through the water inlet 9, and then the cooling water condenses the steam material flowing through the connecting pipe 4, and then the cooling water that absorbs heat is discharged through the drain port 11.

[0025] See also Figure 1-Figure 4The outer surface of the plug sleeve 5 is connected and fixed with a lower support plate 18, and an upper support plate 17 is provided on the upper side of the lower support plate 18. One end of the upper support plate 17 is connected and fixed with the connecting pipe 4. The end of the upper support plate 17 away from the connecting pipe 4 is connected and fixed with the end of the lower support plate 18 away from the plug sleeve 5 by the way of matching the bolt 13 and the nut 12. The upper surface of the upper support plate 17 is provided with an upper hole 22 on the side away from the connecting pipe 4, and the upper surface of the lower support plate 18 is provided with a lower hole 24 aligned with the upper hole 22 on the side away from the plug sleeve 5. One end of the bolt 13 passes through the lower hole 24 and the upper hole 22 in sequence and A nut 12 is threadedly connected, and both the upper support plate 17 and the lower support plate 18 pass through a rectangular opening 21, which is opened in the middle of one side of the heat insulation plate 19. One side of the rectangular opening 21 is provided with a support ear 15 connected and fixed to the heat insulation plate 19, and a threaded hole 20 opened on one side of the support ear 15 is threadedly connected with a positioning screw 14 for limiting the relative position of the support ear 15 and the upper support plate 17 and the lower support plate 18 to form a structure. One end of the connecting pipe 4 is inserted into the plug sleeve 5 to realize that the connecting pipe 4 is connected to the space formed by the top cover 6 and the distillation kettle 1. At this time, the upper support plate 17 and the lower support plate 18 overlap, so that the structure formed by the upper support plate 17 and the lower support plate 18 is inserted into the rectangular opening 21 on the heat insulation plate 19, and then the positioning screw 14 is used to limit the relative position of the heat insulation plate 19 and the upper support plate 17 and the lower support plate 18, and then the bolt 13 is passed through the channel formed by the lower hole 24 and the upper hole 22 and the nut 12 is screwed on. At this time, the bolt 13 and the nut 12 are away from the connecting pipe 4, thereby reducing the heat radiation on the connecting pipe 4 to the bolt 13 and the nut 12, and at the same time, under the obstruction of the heat insulation plate 19, the heat on the connecting pipe 4 is further improved. The effect on the nut 12 is to keep the bolt 13 that limits the position of the connecting pipe 4 away from the connecting pipe 4, prevent the bolt 13 and the nut 12 from being oxidized and rusted prematurely due to the high temperature, which is beneficial to ensure the reliability of the connection between the connecting pipe 4 and the distillation tower, and make the insulation sleeve 3 threadedly connected with the external thread ring 16. At this time, the nut 12, the bolt 13, and the positioning screw 14 are all in the space formed by the insulation disk 19 and the insulation sleeve 3, so that the nut 12, the bolt 13, and the positioning screw 14 are in a low-temperature oxygen-deficient environment, further improving the effect of protecting the nut 12, the bolt 13, and the positioning screw 14.

[0026] See also Figure 1-Figure 4The side of the heat insulation plate 19 facing the support ear 15 is connected and fixed with an external thread ring 16, which is arranged concentrically with the heat insulation plate 19. The external thread ring 16 is threadedly connected to the heat insulation sleeve 3 for hiding the bolts 13, nuts 12 and positioning screws 14. The end of the heat insulation sleeve 3 facing the heat insulation plate 19 is open, and the inner surface of the heat insulation sleeve 3 is processed with an internal thread that matches the external thread ring 16. The multiple blind holes formed by the upward depression on the lower surface of the upper support plate 17 are all installed with plug posts 23. A plurality of insertion holes 25 matching with the insertion posts 23 are evenly formed on the upper surface of the support plate 18, wherein the insertion posts 23 are inserted into the insertion holes 25, so that the structure formed by the upper support plate 17 and the lower support plate 18 is inserted into the rectangular opening 21 on the insulation plate 19. At this time, the insulation plate 19 and the fasteners formed by the bolts 13 and the nuts 12 jointly limit the relative positions of the upper support plate 17 and the lower support plate 18, so that the insertion posts 23 are inserted into the insertion holes 25, and the upper support plate 17 and the lower support plate 18 are quickly aligned.

[0027] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A distillation tower, comprising a distillation kettle (1), characterized in that: The distillation kettle (1) is provided with a heating element, the upper end of the distillation kettle (1) is provided with a top cover (6), the top of the top cover (6) is provided with a plug sleeve (5), a connecting pipe (4) is inserted in the plug sleeve (5), the connecting pipe (4) is a "U"-shaped structure, a vertical portion of the connecting pipe (4) away from the plug sleeve (5) passes through the cooling water jacket (10), the upper end outer surface of the cooling water jacket (10) is provided with a drain port (11), the lower end outer surface of the cooling water jacket (10) is provided with a water inlet (9), the outer surface of the plug sleeve (5) is connected and fixed with a lower support plate (18), the upper side of the lower support plate (18) is provided with an upper support plate (17), the upper support plate (17) One end is connected and fixed to the connecting pipe (4); the end of the upper support plate (17) away from the connecting pipe (4) is connected and fixed to the end of the lower support plate (18) away from the plug sleeve (5) by means of a bolt (13) and a nut (12) in cooperation; the upper support plate (17) and the lower support plate (18) both pass through a rectangular opening (21); the rectangular opening (21) is provided at the middle of a side surface of the heat insulation plate (19); a support ear (15) connected and fixed to the heat insulation plate (19) is provided on one side of the rectangular opening (21); a positioning screw (14) is threadedly connected to one side of the support ear (15) for limiting the relative position of the support ear (15) and the upper support plate (17) and the lower support plate (18) to form a structure.

2. A distillation tower according to claim 1, characterized in that: An external thread ring (16) is fixedly connected to a surface of the heat insulation disk (19) facing the support ear (15); the external thread ring (16) is arranged concentrically with the heat insulation disk (19); the external thread ring (16) is threadedly connected to a heat insulation sleeve (3) for concealing bolts (13), nuts (12) and positioning screws (14); one end of the heat insulation sleeve (3) facing the heat insulation disk (19) is open; and an internal thread matching the external thread ring (16) is machined on the inner surface of the heat insulation sleeve (3).

3. A distillation tower according to claim 1, characterized in that: A threaded hole (20) penetrating the support ear (15) is provided on one side of the support ear (15), and the positioning screw (14) is threadedly connected in the threaded hole (20).

4. A distillation tower according to claim 1, characterized in that: An upper hole (22) is formed on the upper surface of the upper support plate (17) at a side away from the connecting pipe (4), and a lower hole (24) aligned with the upper hole (22) is formed on the upper surface of the lower support plate (18) at a side away from the plug sleeve (5). One end of the bolt (13) passes through the lower hole (24) and the upper hole (22) in sequence and is threadedly connected to a nut (12).

5. A distillation tower according to claim 1, characterized in that: A plurality of plug posts (23) are evenly mounted on the lower surface of the upper support plate (17), a plurality of insertion holes (25) matching the plug posts (23) are evenly opened on the upper surface of the lower support plate (18), and the plug posts (23) are inserted into the insertion holes (25).

6. A distillation tower according to claim 5, characterized in that: The position of the lower support plate (18) where the plug post (23) is installed is recessed upward to form a blind hole, and the upper end of the plug post (23) is fixed in the blind hole.

7. A distillation tower according to claim 1, characterized in that: A feeding pipe (2) is installed on the outer surface of the upper end of the distillation kettle (1), and a discharge valve (8) is installed at the bottom of the distillation kettle (1).

8. A distillation tower according to claim 1, characterized in that: The heating element comprises an insulating tube (7); the insulating tube (7) is sleeved on the distillation kettle (1) and is fixedly connected to the distillation kettle (1); a heating resistance wire electrically connected to an external power source is installed in a space formed by the insulating tube (7) and the distillation kettle (1).

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