Esterification reaction kettle for producing low-molecular additive

Abstract

The utility model relates to the technical field of chemical production equipment, and particularly discloses an esterification reaction kettle for producing a low-molecular additive, which comprises a kettle body, an esterification reaction kettle, an esterification reaction kettle, an esterification reaction kettle body and an esterification reaction kettle, and is characterized in that the kettle body is provided with a feed port at the top and a discharge port at the bottom; the feeding pipeline is vertically arranged at the top of the kettle body, and a stop valve is arranged between the feeding pipeline and the kettle body; a first three-way valve is arranged at the other end of the feeding pipeline; the emptying condensation pipeline is vertically communicated with the first three-way valve and is coaxially arranged with the feeding pipeline; the feeding pipeline is communicated with the other end of the first three-way valve, and the problems that when a traditional esterification reaction kettle is used for adding materials, an end cover at a feeding port needs to be opened, so that hot air in the kettle body is easy to leak, energy is wasted, and the production cost is increased are solved.

Description

Technical Field

[0001] The present application relates to the technical field of chemical production equipment, and specifically discloses an esterification reaction kettle for producing low molecular weight additives. Background Art

[0002] In the production process of low molecular weight additives, esterification reaction is usually one of the important production processes. For example, in the preparation process of low molecular weight water reducer containing phosphate ester, it is necessary to subject the terminal hyperbranched polyether intermediate to an esterification reaction with a phosphorylation reagent for 5 to 24 hours to synthesize the terminal hyperbranched low molecular weight water reducer containing phosphate ester.

[0003] The esterification reaction process is usually carried out in an esterification reaction kettle, and during the esterification reaction process, materials need to be added and supplemented in stages for multiple times. For example, in the preparation process of a phosphate-based low-molecular water-reducing agent, ethylene oxide needs to be added to the esterification reaction kettle in stages for multiple times, and the traditional esterification reaction kettle can only add materials through the feed port on the top of the kettle body. When adding, the end cover at the feed port needs to be opened, which causes the hot air in the kettle body to leak out easily, which not only easily causes burns to the staff, but also reduces the reaction temperature in the kettle body, resulting in energy waste, thereby increasing the cost in the production process of the low-molecular additive. Therefore, in view of this, the inventor provides an esterification reaction kettle for the production of low-molecular additives to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the problem that when adding materials to a traditional esterification reactor, the end cover at the feed port needs to be opened, which causes the hot air in the reactor to leak out easily, resulting in energy waste and increased production costs.

[0005] In order to achieve the above-mentioned purpose, the basic scheme of the utility model provides an esterification reaction kettle for producing low molecular weight additives, comprising:

[0006] A kettle body, wherein the top of the kettle body is provided with a feed inlet, and the bottom of the kettle body is provided with a discharge outlet;

[0007] A feeding pipeline is vertically arranged at the top of the kettle body, and a stop valve is arranged between the feeding pipeline and the kettle body; a first three-way valve is arranged at the other end of the feeding pipeline;

[0008] A venting condensation pipeline, which is vertically connected to the first three-way valve and is coaxially arranged with the feeding pipeline;

[0009] A feed pipeline is connected to the other end of the first three-way valve.

[0010] Furthermore, a second three-way valve is provided at the other end of the feed pipe, and the other two ends of the second three-way valve are respectively connected to a material adding pipeline and a pressure relief pipeline.

[0011] Furthermore, the venting condensation pipe includes an inner tube body and an outer tube body, a sandwich is formed between the inner tube body and the outer tube body, a liquid guide port is provided at the bottom of the sandwich, a notch connected to the inner tube body is provided at the top of the sandwich, and the top of the outer tube body is sealed.

[0012] Furthermore, an arc-shaped guide plate is provided at the top of the outer tube body, and the notch is communicated with the lowest point of the guide plate.

[0013] Furthermore, a circulation pipeline is provided between the guide plate and the inner top of the outer tube body, the circulation pipeline is filled with coolant, and a coolant pump for driving the circulation of the coolant is provided on the circulation pipeline.

[0014] Furthermore, it also includes a stirring assembly, which includes a driving motor arranged on the top of the kettle body and a stirring roller driven by the driving motor and extending into the kettle body.

[0015] Furthermore, a bracket for mounting the driving motor is provided on the top of the kettle body, and a coupling is provided between the output shaft of the driving motor and the stirring roller.

[0016] The principle and effect of this scheme are:

[0017] Compared with the prior art, the utility model sets a feeding pipe and isolates the feeding pipe by a stop valve and a first three-way valve, so that when adding materials, the materials can be temporarily stored in the feeding pipe, thereby avoiding the hot air in the kettle from leaking out. This solves the problem that when adding materials to the traditional esterification reaction kettle, the end cover at the feed port needs to be opened, which causes the hot air in the kettle to easily leak out, resulting in energy waste and increased production costs. At the same time, a venting condensation pipe is set, so that the water vapor generated during the esterification reaction process enters the venting condensation pipe for condensation, avoiding the high-temperature water vapor from being directly discharged from the feeding pipe and causing burns to the surrounding staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A front view of an esterification reaction kettle for producing low molecular weight additives proposed in an embodiment of the present application is shown;

[0020] Figure 2 A schematic diagram of the connection of a feeding pipeline of an esterification reaction kettle for producing low molecular weight additives proposed in an embodiment of the present application is shown;

[0021] Figure 3 A cross-sectional view of a venting condensation pipeline of an esterification reaction kettle for producing low molecular weight additives proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0022] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0023] The figure marks in the drawings of the specification include: kettle body 1, drive motor 2, coupling 3, feed port 4, feeding port 5, stop valve 6, feeding pipeline 7, venting condensation pipeline 8, outer tube body 801, inner tube body 802, guide plate 803, interlayer 804, circulation pipeline 805, first three-way valve 9, second three-way valve 10, material adding pipeline 11, pressure relief pipeline 12, and feed pipeline 13.

[0024] An esterification reactor for producing low molecular weight additives, for example Figure 1 As shown, it includes the following structures:

[0025] Kettle body 1: A feed port 4, an observation port and a feeding port 5 are arranged on the top of the kettle body 1, and a discharge port is arranged on the bottom. The feed port 4, the observation port and the discharge port are all provided with end covers. A water bath heating pipeline and an oil bath heating pipeline are arranged on the inner wall of the kettle body 1. Hot water and hot oil are supplied to the water bath heating pipeline and the oil bath heating pipeline through an external hot water pump and an oil pump, so as to heat the material in the kettle body 1 so that the material can undergo an esterification reaction.

[0026] Stirring assembly: The stirring assembly includes a driving motor 2 arranged on the top of the kettle body 1 and a stirring roller driven by the driving motor 2 and extending into the kettle body 1. Specifically, a bracket for installing the driving motor 2 is provided on the top of the kettle body 1, and the output shaft of the driving motor 2 is connected to the stirring roller through a coupling 3.

[0027] Feeding pipe 7: Figure 2 As shown, the feeding pipe 7 is vertically arranged at the top of the kettle body 1 and is interconnected with the feeding port 5, and a stop valve 6 is provided between the feeding pipe 7 and the feeding port 5; a first three-way valve 9 is provided at the other end of the feeding pipe 7; the three connecting ends of the first three-way valve 9 are respectively arranged vertically downward, vertically upward and horizontally.

[0028] Feed pipe 13: The feed pipe 13 is connected to one horizontal end of the first three-way valve 9, and a second three-way valve 10 is provided at the other end of the feed pipe. The other two ends of the second three-way valve 10 are connected to a material addition pipe 11 and a pressure relief pipe 12 respectively.

[0029] Venting condensation pipeline 8: The venting condensation pipeline 8 is vertically connected to the vertically upward end of the first three-way valve 9 and is coaxially arranged with the feeding pipeline 7, such as Figure 3 As shown, the venting condensation pipeline 8 includes an inner tube body 802 and an outer tube body 801, and an interlayer 804 is formed between the inner tube body 802 and the outer tube body 801. A liquid guide port is provided at the bottom of the interlayer 804, and the liquid guide port is sealed by a rubber plug. A notch connected to the inner tube body 802 is provided at the top of the interlayer 804, and the top of the outer tube body 801 is sealed. An arc-shaped guide plate 803 is provided at the top of the outer tube body 801, and the notch is connected to the bottom of the guide plate 803. A circulation pipeline 805 is provided between the guide plate 803 and the top of the outer tube body 801. The circulation pipeline 805 is filled with coolant. The circulation pipeline 805 extends to the outside of the venting condensation pipeline 8 and is provided with a coolant pump for driving the coolant to circulate. Correspondingly, a fan is arranged on the side wall of the circulation pipeline 805 located outside the venting condensation pipeline 8 for cooling and heat dissipation. The inner tube body 802 and the outer tube body 801 are both made of heat-insulating material, and the guide plate 803 is made of heat-conductive material.

[0030] During the implementation of this embodiment, during the esterification reaction of the kettle body 1, the first three-way valve 9 makes the feeding pipeline 7 and the venting condensation pipeline 8 connected, and the feeding pipeline 13 is blocked, and the gasification steam generated during the esterification reaction enters the venting condensation pipeline 8 and contacts the guide plate 803 at the top of the venting condensation pipeline 8. Water droplets converge and flow into the interlayer 804. In the process of adding materials, the feeding pipeline 7 is first disconnected from the feeding port 5 through the stop valve 6, and then the feeding pipeline 7 is connected to the feeding pipeline 13 through the first three-way valve 9, and the material addition pipeline 11 is connected to the feeding pipeline 7 through the second three-way valve 10, and the material enters the feeding pipeline 7 from the material addition pipeline 11 and the feeding pipeline 13, and then the second three-way valve 10 is closed, and the stop valve 6 is opened to allow the material to enter the kettle body 1, and then the first three-way valve 9 is closed, and the second three-way valve 10 is opened, so that the feeding pipeline 13 is connected to the pressure relief pipeline 12 for pressure relief.

[0031] Compared with the prior art, the utility model sets a feeding pipe 7 and isolates the feeding pipe 7 through a stop valve 6 and a first three-way valve 9, so that when adding materials, the materials can be temporarily stored in the feeding pipe 7, thereby preventing the hot air in the kettle body 1 from leaking out. This solves the problem that when adding materials to the traditional esterification reactor, the end cover at the feed port 4 needs to be opened, which causes the hot air in the kettle body 1 to easily leak out, causing energy waste and increasing production costs. At the same time, a venting condensation pipe 8 is set, so that the water vapor generated during the esterification reaction process enters the venting condensation pipe 8 for condensation, thereby preventing the high-temperature water vapor from being directly discharged from the feeding pipe 7 and causing burns to the surrounding staff.

[0032] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An esterification reactor for the production of low molecular weight additives, characterized in that: include: A kettle body, wherein the top of the kettle body is provided with a feed inlet, and the bottom of the kettle body is provided with a discharge outlet; A feeding pipeline is vertically arranged at the top of the kettle body, and a stop valve is arranged between the feeding pipeline and the kettle body; a first three-way valve is arranged at the other end of the feeding pipeline; A venting condensation pipeline, which is vertically connected to the first three-way valve and is coaxially arranged with the feeding pipeline; A feed pipeline is connected to the other end of the first three-way valve.

2. The esterification reaction kettle for producing low molecular weight additives according to claim 1, characterized in that: A second three-way valve is provided at the other end of the feed pipe, and the other two ends of the second three-way valve are respectively connected with a material adding pipeline and a pressure relief pipeline.

3. The esterification reaction kettle for producing low molecular weight additives according to claim 1, characterized in that: The venting condensation pipeline includes an inner tube body and an outer tube body, wherein an interlayer is formed between the inner tube body and the outer tube body, a liquid guide port is provided at the bottom of the interlayer, a notch communicating with the inner tube body is provided at the top of the interlayer, and the top of the outer tube body is sealed.

4. The esterification reaction kettle for producing low molecular weight additives according to claim 3, characterized in that: An arc-shaped guide plate is provided on the top of the outer tube body, and the notch is communicated with the lowest point of the guide plate.

5. The esterification reaction kettle for producing low molecular weight additives according to claim 4, characterized in that: A circulation pipeline is arranged between the guide plate and the inner top of the outer tube body. The circulation pipeline is filled with coolant. A coolant pump for driving the coolant to circulate is arranged on the circulation pipeline.

6. The esterification reaction kettle for producing low molecular weight additives according to claim 1, characterized in that: The kettle also comprises a stirring assembly, which comprises a driving motor arranged on the top of the kettle body and a stirring roller driven by the driving motor and extending into the kettle body.

7. The esterification reaction kettle for producing low molecular weight additives according to claim 6, characterized in that: A bracket for mounting the driving motor is provided on the top of the kettle body, and a coupling is provided between the output shaft of the driving motor and the stirring roller.

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