Continuous feeding system in tertiary amine production

Abstract

The utility model relates to the technical field of tertiary amine production, in particular to a continuous feeding system in tertiary amine production. The continuous feeding system in tertiary amine production comprises a reaction kettle and a heater, a raw material heating barrel is arranged on the heater, the raw material heating barrel is connected with a preheating kettle through a backwashing filter, the preheating kettle is connected with the reaction kettle through a pipeline, an L-shaped feeding disperser is arranged in the reaction kettle, and the L-shaped feeding disperser is connected with a gas phase heat exchange tank. According to the system, waste heat of a product is used for heating a liquid-phase raw material, so that the viscosity of the raw material is greatly reduced, and the feeding stability is improved after the raw material is filtered by the backwashing filter; through the arrangement of the preheating kettle and the gas-phase heat exchange tank, gas-liquid raw materials are heated through waste heat of a heating medium, so that the temperature difference between the raw materials and a liquid phase in the kettle is greatly reduced, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tertiary amine production, in particular to a continuous feeding system in tertiary amine production. Background Art

[0002] Tertiary amines are an important class of organic compounds widely used in surfactants, pharmaceuticals, dyes, pesticides, and other fields. Tertiary amine production is a multi-step chemical process, including raw material preparation, catalyst preparation, reaction preparation, separation and purification. Throughout these steps, the feed system is crucial to ensuring reaction uniformity and efficiency.

[0003] In actual production, tertiary amine liquid raw materials are greatly affected by the external temperature and are more viscous in low-temperature environments, making the feed rate difficult to control. In addition, in existing devices, when the gas and liquid phases enter the reactor, due to continuous production, there is a large temperature difference between the raw materials and the liquid phase in the reactor, which not only affects production efficiency but also is not conducive to improving product quality. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide a continuous feeding system for tertiary amine production, which greatly reduces the viscosity of the raw materials by using the waste heat of the product to heat the liquid raw materials, and improves the feeding stability after filtration through the backwash filter; by setting up a preheating kettle and a gas-phase heat exchange tank, the gas-liquid raw materials are heated by the waste heat of the heating medium, which greatly reduces the temperature difference between the raw materials and the liquid phase in the kettle, thereby improving production efficiency and product quality.

[0005] The utility model is realized by adopting the following technical solutions:

[0006] The continuous feeding system for tertiary amine production includes a reactor and a heater. The heater is provided with a raw material heating barrel, which is connected to a preheating reactor via a backwash filter. The preheating reactor is connected to the reactor via a pipeline. An L-shaped feed disperser is provided inside the reactor, which is connected to a gas phase heat exchange tank.

[0007] A heat-conducting coil is provided inside the heater; the internal pipes of the system are provided with heat-insulating materials, and a temperature-control coil is provided inside the preheating kettle.

[0008] The interior of the reactor is provided with a stirring paddle driven by a stirring motor. The stirring paddle is located above an L-shaped feed disperser, and a discharge port is provided on the L-shaped feed disperser.

[0009] The outside of the reactor is provided with a reactor insulation jacket, the outside of the preheating reactor is provided with a preheating reactor insulation jacket, and the reactor insulation jacket is connected with a heating medium inlet pipe.

[0010] The gas-phase heat exchange tank is provided with a gas-phase heat exchange tank coil inside, and the gas-phase heat exchange tank coil is connected to a gas-phase feed pipe. The gas-phase heat exchange tank coil is connected to an L-shaped feed disperser through a pipe. The L-shaped feed disperser is used to improve the dispersion of the gas-phase raw materials.

[0011] The reactor insulation jacket is connected to the preheating kettle insulation jacket through a pipeline, and the preheating kettle insulation jacket is connected to the gas phase heat exchange tank coil through a pipeline.

[0012] An obtuse-angled discharger is provided at the bottom of the reactor. The obtuse-angled discharger is connected to the heater through a cooling pipe, and the heater is connected to a product discharge pipe.

[0013] The working principle of this utility model is:

[0014] The raw materials in the raw material heating barrel are heated by the heater and then filtered through the backwash filter. After being preheated in the preheating kettle, they enter the reactor. The heating medium in the pipeline enters the reactor's insulation jacket. The gas in the gas-phase feed pipeline passes through the gas-phase heat exchange tank coil and enters the L-shaped feed disperser for reaction. After the reaction is complete, the product enters the heater through the cooling pipeline to heat the raw materials. The medium in the reactor's insulation jacket passes through the preheating kettle insulation jacket and enters the gas-phase heat exchange tank to exchange heat with the raw materials. The heater is equipped with a heat-conducting coil. The internal pipes of this system are all equipped with insulation material, and the preheating kettle is equipped with a temperature-controlled coil.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The continuous feeding system for tertiary amine production of the utility model greatly reduces the viscosity of the raw materials by using the waste heat of the product to heat the liquid raw materials. After filtering through the backwash filter, the feeding stability is improved. By setting up the preheating kettle and the gas-phase heat exchange tank, the gas-liquid raw materials are heated by the waste heat of the heating medium, which greatly reduces the temperature difference between the raw materials and the liquid phase in the kettle, thereby improving production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a continuous feeding system for the production of tertiary amines in the present utility model;

[0018] Figure 2 This is a schematic structural diagram of the L-shaped feed disperser of the utility model;

[0019] In the figure: 1. Reactor; 2. Preheating kettle; 3. Backwash filter; 4. Heater; 5. Raw material heating barrel; 6. Stirring paddle; 7. Stirring motor; 8. Gas-phase heat exchange tank; 9. L-shaped feed disperser; 10. Reactor insulation jacket; 11. Preheating kettle insulation jacket; 12. Gas-phase heat exchange tank coil; 13. Gas-phase feed pipe; 14. Product discharge pipe; 15. Cooling pipe; 16. Discharge port; 17. Heating medium inlet pipe. DETAILED DESCRIPTION

[0020] In order to make the purpose and technical solution of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings.

[0021] Example 1

[0022] like Figure 1 As shown, the continuous feeding system for tertiary amine production includes a reactor 1 and a heater 4. The heater 4 is equipped with a raw material heating barrel 5. The raw material heating barrel 5 is connected to the preheating kettle 2 through a backwash filter 3. The preheating kettle 2 is connected to the reactor 1 through a pipeline. The reactor 1 is equipped with an L-shaped feed disperser 9, which is connected to a gas phase heat exchange tank 8. The heater 4 is equipped with a heat conduction coil; the internal pipes of this system are all equipped with insulation materials, and the preheating kettle 2 is equipped with a temperature control coil. Figure 2 As shown, the reactor 1 is equipped with a stirring paddle 6 driven by a stirring motor 7. The stirring paddle 6 is located above an L-shaped feed disperser 9, which is provided with a discharge port 16. A reactor insulation jacket 10 is installed on the outside of the reactor 1, while a preheating kettle insulation jacket 11 is installed on the outside of the preheating kettle 2. A heating medium inlet pipe 17 is connected to the reactor insulation jacket 10. A gas-phase heat exchange tank 8 is equipped with a gas-phase heat exchange tank coil 12, which is connected to a gas-phase feed pipe 13. The gas-phase heat exchange tank coil 12 is connected to the L-shaped feed disperser 9 via a pipe. The reactor insulation jacket 10 is connected to the preheating kettle insulation jacket 11 via a pipe, which in turn is connected to the gas-phase heat exchange tank coil 12 via a pipe. A blunt-angle discharger is installed at the bottom of the reactor 1. The blunt-angle discharger is connected to the heater 4 via a cooling pipe 15. The heater 4 is connected to a product discharge pipe 14.

[0023] The continuous feeding system for the production of tertiary amines, when in operation, comprises the following steps:

[0024] (1) The raw materials in the raw material heating barrel 5 are heated by the heater 4 and then enter the backwash filter 3 for filtration. After that, they are preheated by the preheating kettle 2 and enter the reactor 1. The heating medium enters the heating medium in the pipe 17 and enters the reactor insulation jacket 10. The gas in the gas phase feed pipe 13 enters the L-shaped feed disperser 9 through the gas phase heat exchange tank coil 12 for reaction. (2) After the reaction is completed, the product enters the heater 4 through the cooling pipe 15 to heat the raw materials. The medium in the reactor insulation jacket 10 enters the gas phase heat exchange tank 8 after passing through the preheating kettle insulation jacket 11 to exchange heat with the raw materials.

Claims

1. A continuous feeding system for tertiary amine production, characterized in that: The invention comprises a reactor (1) and a heater (4). A raw material heating barrel (5) is provided on the heater (4). The raw material heating barrel (5) is connected to a preheating reactor (2) via a backwash filter (3). The preheating reactor (2) is connected to the reactor (1) via a pipeline. An L-shaped feed disperser (9) is provided inside the reactor (1). The L-shaped feed disperser (9) is connected to a gas phase heat exchange tank (8).

2. The continuous feeding system for tertiary amine production according to claim 1, characterized in that: The reactor (1) is provided with a stirring paddle (6) driven by a stirring motor (7). The stirring paddle (6) is located above an L-shaped feed disperser (9). The L-shaped feed disperser (9) is provided with a discharge port (16).

3. The continuous feeding system for tertiary amine production according to claim 1, characterized in that: The outside of the reactor (1) is provided with a reactor insulation jacket (10), the outside of the preheating reactor (2) is provided with a preheating reactor insulation jacket (11), and the reactor insulation jacket (10) is connected to a heating medium inlet pipe (17).

4. The continuous feeding system for tertiary amine production according to claim 3, characterized in that: The gas phase heat exchange tank (8) is provided with a gas phase heat exchange tank coil (12) inside, the gas phase heat exchange tank coil (12) is connected to a gas phase feed pipe (13), and the gas phase heat exchange tank coil (12) is connected to the L-shaped feed disperser (9) through a pipe.

5. The continuous feeding system for tertiary amine production according to claim 4, characterized in that: The reactor insulation jacket (10) is connected to the preheating kettle insulation jacket (11) through a pipeline, and the preheating kettle insulation jacket (11) is connected to the gas phase heat exchange tank coil (12) through a pipeline.

6. The continuous feeding system for tertiary amine production according to claim 1, characterized in that: The bottom of the reactor (1) is provided with an obtuse-angled discharger, which is connected to the heater (4) via a cooling pipe (15), and the heater (4) is connected to a product discharge pipe (14).

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