Rectification device for polyether amine production

Abstract

The utility model discloses a rectification device for polyether amine production, which relates to the technical field of rectification and comprises a rectification tower body, a steam outlet fixedly mounted at the upper end of the rectification tower body, a feed inlet arranged on the side wall of the rectification tower body, a reflux pipeline fixedly mounted at the bottom of the rectification tower body and an access hole arranged on the rectification tower body. A tower plate assembly is fixedly installed in the access hole and comprises a tower plate body fixedly installed in the rectifying tower body, a flow baffle is fixedly installed on the edge of one side of the tower plate body, an overflow plate is fixedly installed on the other side of the tower plate body, movable sliding grooves are formed in the flow baffle and the overflow plate, and steam holes are formed in the tower plate body. A downcomer is mounted at the edge of the tower plate body, and a cleaning mechanism is arranged between the flow baffle and the overflow plate. According to the rectification device for polyether amine production, through cooperative use of the tower plate assembly and the cleaning machine, a user can conveniently clean the blocked steam holes.

Description

Technical Field

[0001] This utility model relates to the field of distillation technology, specifically a distillation apparatus for the production of polyetheramine. Background Technology

[0002] Polyetheramines (PEA) are a class of polymers with a polyether backbone and amino groups at the ends. Their unique molecular structure endows PEA with excellent comprehensive properties, such as high strength, high toughness, low viscosity, long service life, anti-aging properties, and excellent waterproofing. Commercially available PEAs include monofunctional, difunctional, and trifunctional products with molecular weights ranging from 230 to 5000. PEAs have wide applications in various fields, such as as high-performance curing agents for epoxy resins, used in the production of high-strength, high-toughness composite materials; as a key component of polyurea materials, exhibiting excellent performance in waterproofing systems for concrete structures; and as gasoline detergents, possessing excellent detergency, dispersion, demulsification, corrosion inhibition, and antioxidant properties.

[0003] In the processing of polyetheramine, distillation is generally carried out using a distillation column. During distillation, the raw material is fed into the distillation column through the feed inlet. The raw material fed into the distillation column flows downward along the trays, while high-temperature steam passes through the steam holes of the trays. On the trays, the rising steam and the flowing liquid exchange mass and heat, making the low-boiling-point components in the rising steam more and more concentrated, and the high-boiling-point components in the flowing liquid more and more concentrated, thus achieving distillation. However, after long-term use, the steam holes on the trays are prone to clogging, affecting the heat exchange efficiency. In addition, the trays are located inside the distillation column, making them inconvenient to clean. Utility Model Content

[0004] The purpose of this invention is to provide a distillation apparatus for the production of polyetheramine, so as to solve the problem of inconvenient tray cleaning in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a distillation apparatus for polyetheramine production, comprising a distillation column body, a steam outlet fixedly installed at the upper end of the distillation column body, a feed inlet provided on the side wall of the distillation column body, a reflux pipe fixedly installed at the bottom of the distillation column body, an inspection port provided on the distillation column body, a tray assembly fixedly installed inside the inspection port, the tray assembly comprising a tray body fixedly installed inside the distillation column body, a baffle plate fixedly installed at one edge of the tray body, and an overflow outlet fixedly installed on the other side of the tray body. The tray has movable grooves on both the baffle and the overflow plate, and vapor holes on the tray body. A downcomer is installed at the edge of the tray body. A cleaning mechanism is provided between the baffle and the overflow plate. The cleaning mechanism includes a sliding base movably installed on the overflow plate and the baffle. An installation chamber is provided on the sliding base and inside the sliding base. A return spring is provided in the installation chamber. A cleaning plunger is movably installed at the bottom of the sliding base. A metal pipe is connected to the sliding base, and the metal pipe can transport gas to the installation chamber.

[0006] Preferably, the distillation column body is provided with an installation slot, and the distillation column body is installed inside the distillation column body by means of an installation clip.

[0007] Preferably, the tray body has an installation port, and the downcomer is installed on the tray body through the installation port.

[0008] Preferably, the sliding base is provided with sliding feet at both ends, and the sliding feet are movably installed in the movable groove. The sliding base is movably installed between the overflow plate and the baffle plate through the movable groove, and the sliding base can slide along the movable groove.

[0009] Preferably, the bottom of the sliding base is provided with a plunger groove, and the cleaning plunger is movably installed on the sliding base through the plunger groove. The cleaning plunger is vertically aligned with the steam outlet on the tower plate body, and the cleaning plunger enters the steam hole when it moves downward.

[0010] Preferably, an air pump is connected to the end of the metal pipe.

[0011] Preferably, one end of the return spring is connected to the cleaning plunger, and the other end of the return spring is connected to the top of the mounting chamber, and the mounting chamber is connected to the plunger groove. The return spring provides elastic force to the cleaning plunger, so that the cleaning plunger has an upward tendency to move.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In this application, the raw material is transported into the distillation column and flows downwards along the main body of the trays. At the same time, high-temperature steam penetrates the main body of the trays through steam holes. On the main body of the trays, the rising steam and the flowing liquid exchange mass and heat. This process causes the concentration of low-boiling-point components in the rising steam to gradually increase, while the concentration of high-boiling-point components in the flowing liquid gradually increases, thereby realizing the distillation process.

[0014] 2. In this application, after the cleaning plunger is vertically aligned with the steam hole, gas can be injected into the installation chamber. After inflation, the cleaning plunger in the groove of the installation chamber will slide down vertically. During the slide, the cleaning plunger will push out the blockage in the steam hole, making it easier for the user to clean the blocked steam hole. After cleaning, the gas in the installation chamber will be discharged. After the gas is discharged, the return spring will pull the cleaning plunger back to the initial position. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial structural schematic diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the tray assembly of this utility model;

[0018] Figure 4 This is a schematic diagram of the cleaning mechanism of this utility model.

[0019] The diagram labels are as follows: 1. Steam outlet; 2. Feed inlet; 3. Inspection port; 4. Distillation column body; 5. Reflux pipe; 6. Tray assembly; 601. Tray body; 602. Steam hole; 603. Baffle plate; 604. Overflow plate; 605. Movable chute; 606. Downcomer; 7. Cleaning mechanism; 701. Sliding base; 702. Installation chamber; 703. Return spring; 704. Cleaning plunger; 705. Plunger chute; 706. Sliding support; 707. Metal pipe. Detailed Implementation

[0020] 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.

[0021] like Figure 1 and Figure 2As shown, this utility model provides a technical solution for a distillation apparatus for polyetheramine production, including a distillation column body 4, a steam outlet 1 fixedly installed at the upper end of the distillation column body 4, a feed inlet 2 provided on the side wall of the distillation column body 4, a reflux pipe 5 fixedly installed at the bottom of the distillation column body 4, an inspection port 3 opened on the distillation column body 4, a tray assembly 6 fixedly installed in the inspection port 3, and a cleaning mechanism 7 provided between the baffle plate 603 and the overflow plate 604. Through the cooperation of the tray assembly 6 and the cleaning mechanism 7, the user can easily clean the blocked steam hole 602.

[0022] like Figure 2 and Figure 3 As shown, the tray assembly 6 includes a tray body 601 fixedly installed inside the distillation column body 4. A baffle plate 603 is fixedly installed on one edge of the tray body 601, and an overflow plate 604 is fixedly installed on the other side of the tray body 601. Movable grooves 605 are provided on both the baffle plate 603 and the overflow plate 604. A vapor hole 602 is provided on the tray body 601. A downcomer 606 is installed at the edge of the tray body 601. An installation slot is provided inside the distillation column body 4, and the distillation column body 4 is installed inside the distillation column body 4 by the installation slot.

[0023] Specifically, the raw material fed into the distillation column body 4 flows downward along the tray body 601, while high-temperature steam passes through the steam hole 602 through the tray body 601. On the tray body 601, the rising steam and the flowing liquid exchange mass and heat, making the low-boiling-point components in the rising steam more and more concentrated, and the high-boiling-point components in the flowing liquid more and more concentrated, thus achieving distillation.

[0024] like Figure 2 and Figure 4 As shown, the cleaning mechanism 7 includes a sliding base 701 movably mounted on the overflow plate 604 and the baffle plate 603. The sliding base 701 has an installation chamber 702, and a return spring 703 is provided inside the installation chamber 702. A cleaning plunger 704 is movably mounted on the bottom of the sliding base 701. A metal pipe 707 is connected to the sliding base 701. A plunger groove 705 is provided at the bottom of the sliding base 701. The cleaning plunger 704 is movably mounted on the sliding base 701 through the plunger groove 705, and the cleaning plunger 704 is vertically aligned with the steam outlet 1 on the tower plate body 601. Sliding feet 706 are provided at both ends of the sliding base 701, and the sliding feet 706 are movably mounted in the sliding groove 605.

[0025] Specifically, after ensuring precise alignment between the cleaning plunger 704 and the steam hole 602, gas can be injected into the mounting chamber 702. This operation will cause the cleaning plunger 704, located within the plunger groove 705, to move vertically. As the cleaning plunger 704 descends, it will push out blockages from the steam hole 602, thus facilitating effective cleaning of the clogged steam hole 602 by the user.

[0026] Working principle: During operation, the raw material is first fed into the distillation column body 4 through the feed inlet 2. The raw material flows downwards along the tray body 601, while high-temperature steam passes through the steam holes 602. On the tray body 601, the rising steam and the flowing liquid exchange mass and heat, making the low-boiling-point components in the rising steam increasingly concentrated and the high-boiling-point components in the flowing liquid increasingly concentrated, thus achieving distillation. If the steam hole 602 is blocked, the sealing cap on the inspection port 3 can be opened. After opening the sealing cap on the inspection port 3, an air pump can be connected to the end of the metal pipe 707. After the end of 707, the sliding base 701 can be pushed forward to align the cleaning plunger 704 with the steam hole 602 vertically. After the cleaning plunger 704 and the steam hole 602 are aligned, air can be injected into the installation chamber 702. After the installation chamber 702 is injected, the cleaning plunger 704 in the plunger groove 705 will slide downward. The downward sliding cleaning plunger 704 will push out the blockage in the steam hole 602, making it convenient for the user to clean the blocked steam hole 602. After the cleaning is completed, the gas in the installation chamber 702 can be discharged. After the gas in the installation chamber 702 is discharged, the return spring 703 will pull the cleaning plunger 704 to return to its original position.

[0027] 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 distillation apparatus for producing polyetheramine, comprising a distillation column body (4), wherein a steam outlet (1) is fixedly installed at the upper end of the distillation column body (4), a feed inlet (2) is provided on the side wall of the distillation column body (4), and a reflux pipe (5) is fixedly installed at the bottom of the distillation column body (4), characterized in that: The distillation column body (4) is provided with an inspection port (3), and a tray assembly (6) is fixedly installed in the inspection port (3). The tray assembly (6) includes a tray body (601) fixedly installed in the distillation column body (4). A baffle plate (603) is fixedly installed on one edge of the tray body (601), and an overflow plate (604) is fixedly installed on the other side of the tray body (601). Movable grooves (605) are provided on both the baffle plate (603) and the overflow plate (604). A vapor hole (602) is provided on the tray body (601), and a tray is installed at the edge of the tray body (601). There is a downcomer (606), and a cleaning mechanism (7) is provided between the baffle (603) and the overflow plate (604). The cleaning mechanism (7) includes a sliding base (701) movably installed between the overflow plate (604) and the baffle (603). An installation chamber (702) is opened on the sliding base (701). An installation chamber (702) is opened inside the sliding base (701). A return spring (703) is provided inside the installation chamber (702). A cleaning plunger (704) is movably installed at the bottom of the sliding base (701). A metal pipe (707) is connected to the sliding base (701).

2. The distillation apparatus for producing polyetheramine according to claim 1, characterized in that: The distillation column body (4) is provided with an installation slot, and the distillation column body (4) is installed inside the distillation column body (4) by means of the installation clip.

3. The distillation apparatus for producing polyetheramine according to claim 2, characterized in that: The tray body (601) is provided with an installation port, and the downcomer (606) is installed on the tray body (601) through the installation port.

4. The distillation apparatus for producing polyetheramine according to claim 3, characterized in that: The sliding base (701) is provided with sliding feet (706) at both ends, and the sliding feet (706) are movably installed in the movable groove (605). The sliding base (701) is movably installed between the overflow plate (604) and the baffle plate (603) through the movable groove (605).

5. A distillation apparatus for producing polyetheramine according to claim 4, characterized in that: The bottom of the sliding base (701) is provided with a plunger groove (705), and the cleaning plunger (704) is movably installed on the sliding base (701) through the plunger groove (705), and the cleaning plunger (704) is vertically aligned with the steam outlet (1) on the tower plate body (601).

6. A distillation apparatus for producing polyetheramine according to claim 5, characterized in that: An air pump is connected to the end of the metal pipe (707).

7. A distillation apparatus for producing polyetheramine according to claim 6, characterized in that: One end of the reset spring (703) is connected to the cleaning plunger (704), and the other end of the reset spring (703) is connected to the top of the mounting chamber (702), and the mounting chamber (702) is connected to the plunger groove (705).

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