Hydrolysis device for 2, 6-di-tert-butylphenol reaction liquid

Abstract

The utility model discloses a 2, 6-di-tert-butylphenol reaction liquid hydrolysis device which comprises a hydrolysis kettle, a water distillation kettle, a reuse water tank, a first storage tank, a second storage tank, a falling film evaporator, a condenser, a filter and a vacuum system, the hydrolysis kettle is respectively connected with the water steaming kettle and the reuse water tank; an alkylated liquid discharge hole is formed in the bottom of the hydrolysis kettle; a filter is arranged between the reuse water tank and the hydrolysis kettle; a falling film evaporator and a condenser are arranged at the top of the water steaming kettle; an inlet of the falling film evaporator is connected with the kettle bottom of the water steaming kettle, and an outlet of the falling film evaporator is connected with the kettle top of the water steaming kettle; an outlet of the condenser is respectively connected with the first storage tank, the second storage tank and the vacuum system, the first storage tank is connected with the reuse water tank, and the second storage tank is connected with the rectification device. Through the integrated equipment layout, the hydrolysis reaction of the 2, 6-di-tert-butylphenol reaction liquid is efficiently carried out, and subsequent products are effectively separated and recycled.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, and particularly relates to a hydrolysis device for 2,6 - di - tert - butylphenol reaction liquid. Background Art

[0002] In the chemical industry, especially in the fields of fine chemicals and organic synthesis, tert - butylphenol - type compounds are substances with a wide range of uses and can be used as antioxidants and light stabilizers in industries such as plastics, rubber, and building materials. 2,6 - di - tert - butylphenol is a relatively representative product among tert - butylphenol - type compounds. 2,6 - di - tert - butylphenol is mainly used in the manufacture of antioxidants for natural rubber and synthetic rubber, plastic antioxidants, fuel stabilizers, ultraviolet absorbers, and intermediates for pesticides and dyes. Its main varieties include antioxidants 1010, 1076, 702, 3114, 4426, methylene 4426 - S, 2002, 330, 1098, 1088, etc.

[0003] Currently, the most widespread synthesis method of 2,6 - di - tert - butylphenol is to first prepare a catalyst using phenol and aluminum chips, then introduce isobutene for high - pressure reaction, and after the reaction is completed, carry out a hydrolysis reaction to remove the prepared catalyst.

[0004] In the prior art, the amount of water used in the hydrolysis reaction is large, and a large number of transition phases will be generated, forming hazardous waste. Currently, there is no good treatment method in the same industry to avoid problems such as large water resource consumption, non - recoverable materials, high energy consumption, and environmental pollution. Summary of the Utility Model

[0005] In view of the above problems and to make up for the deficiencies of the prior art, the utility model provides a hydrolysis device for 2,6 - di - tert - butylphenol reaction liquid, which includes a hydrolysis kettle, a water - evaporation kettle, a recycled - water tank, a first storage tank, a second storage tank, a falling - film evaporator, a condenser, a filter, a vacuum system, and a rectification device;

[0006] The hydrolysis kettle is respectively connected to the water - evaporation kettle and the recycled - water tank; an alkylation - liquid discharge port is arranged at the bottom of the hydrolysis kettle; a filter is arranged between the recycled - water tank and the hydrolysis kettle, and a falling - film evaporator and a condenser are arranged at the top of the water - evaporation kettle; the inlet of the falling - film evaporator is connected to the bottom of the water - evaporation kettle, and the outlet of the falling - film evaporator is connected to the top of the water - evaporation kettle; the outlet of the condenser is respectively connected to the first storage tank, the second storage tank, and the vacuum system, the first storage tank is connected to the recycled - water tank, and the second storage tank is connected to the distillation device.

[0007] Preferably, the water - evaporation kettle is provided with an aluminum hydroxide outlet, a valve is arranged at the aluminum hydroxide outlet, and a loading vehicle is arranged below the aluminum hydroxide outlet.

[0008] Preferably, a first liquid separation pump is provided between the hydrolysis kettle and the recycled water tank, and a second liquid separation pump is provided between the hydrolysis kettle and the water evaporation kettle; a water supply pump is provided between the recycled water tank and the filter.

[0009] Preferably, a first charging pump is provided between the first storage tank and the recycled water tank; a second charging pump is provided between the second storage tank and [the relevant part which is missing in the original text].

[0010] Preferably, the vacuum system includes a vacuum pump, a vacuum buffer tank, and a vacuum tail gas tank, and the vacuum buffer tank, the vacuum pump, and the vacuum tail gas tank are connected in sequence.

[0011] Preferably, the alkylation liquid discharge port is connected to the rectification device.

[0012] Advantages of the present utility model:

[0013] Through the integrated equipment layout, the present utility model realizes the efficient hydrolysis reaction of the 2,6 - di - tert - butylphenol reaction liquid and the effective separation and recovery of subsequent products. The present utility model can not only effectively solve the problems existing in the prior art, enable the originally wasted water to be reused, but also recycle the materials, significantly improving economic and environmental benefits, and providing strong support for the sustainable development of fine chemical production. Description of the drawings

[0014] Figure 1 is a schematic diagram of a hydrolysis device for 2,6 - di - tert - butylphenol reaction liquid of the present utility model.

[0015] Markings in the figure: 1 is the hydrolysis kettle; 2 is the water evaporation kettle; 3 is the recycled water tank; 4 is the first liquid separation pump; 5 is the second liquid separation pump; 6 is the water supply pump; 7 is the filter; 8 is the falling - film evaporator; 9 is the condenser; 10 is the first storage tank; 11 is the second storage tank; 12 is the vacuum system; 13 is the first charging pump; 14 is the second charging pump; 15 is the circulation pump; 16 is the loading truck; 17 is the rectification device. Detailed implementation manners

[0016] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the following further details the present utility model in conjunction with the attached drawings and specific implementation manners. It should be understood that the specific implementation manners described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0017] Combined with Figure 1 As shown, a hydrolysis device for 2,6 - di - tert - butylphenol reaction liquid includes a hydrolysis kettle 1, a water evaporation kettle 2, a recycled water tank 3, a first storage tank 10, a second storage tank 11, a falling - film evaporator 8, a condenser 9, a filter 7, a vacuum system 12, and a rectification device 17.

[0018] In the hydrolysis device for the reaction liquid of 2,6 - di - tert - butylphenol of the present utility model, the hydrolysis kettle 1 is respectively connected to the distilled water kettle 2 and the recycled water tank 3.

[0019] Among them, the bottom of the hydrolysis kettle 1 is connected to the top of the recycled water tank 3 through a pipeline, and a first liquid separation pump 4 is arranged between the bottom of the hydrolysis kettle 1 and the top of the recycled water tank 3; the bottom of the recycled water tank 3 is connected to the top of the hydrolysis kettle 1 through a pipeline, and a water supply pump 6 and a filter 7 are arranged between the bottom of the recycled water tank 3 and the top of the hydrolysis kettle 1. The connection mode between the hydrolysis kettle 1 and the recycled water tank 3 realizes the recycling of the recycled water.

[0020] The bottom of the hydrolysis kettle 1 is connected to the top of the distilled water kettle 2 through a pipeline, and a second liquid separation pump 5 is arranged between the bottom of the hydrolysis kettle 1 and the top of the distilled water kettle 2; a falling - film evaporator 8 and a condenser 9 are arranged on the top of the distilled water kettle 2; the outlet of the falling - film evaporator 8 is connected to the top of the distilled water kettle 2, the inlet of the falling - film evaporator 8 is connected to the bottom of the distilled water kettle 2, and a circulation pump 15 is arranged between the inlet of the falling - film evaporator 8 and the bottom of the distilled water kettle 2; after the material enters the distilled water kettle 2, it is pumped into the falling - film evaporator 8 by the circulation pump 15 at the bottom to form a cycle, thereby improving the heating efficiency of the material.

[0021] The outlet of the condenser 9 is respectively connected to the first storage tank 10, the second storage tank 11, and the vacuum system 12; the first storage tank 10 is connected to the top end of the recycled water tank 3, and a first charging pump 13 is arranged between the first storage tank 10 and the recycled water tank 3; the second storage tank 11 is connected to the rectification device 17, and a second charging pump 14 is arranged between the second storage tank 11 and the rectification device 17.

[0022] Specifically, the vacuum system 12 includes a vacuum pump, a vacuum buffer tank, and a vacuum tail gas tank; the vacuum buffer tank, the vacuum pump, and the vacuum tail gas tank are connected in sequence. The function of the vacuum buffer tank is to prevent the material from entering the vacuum pump and damaging the vacuum pump, and the vacuum tail gas tank can prevent polluted substances from being directly discharged into the air to cause pollution. The function of the vacuum system 12 is to provide a negative pressure condition for the hydrolysis device of the 2,6 - di - tert - butylphenol reaction liquid. Under the negative pressure condition, the boiling point of the material decreases and it is easier to separate.

[0023] Specifically, the distilled water kettle 2 is provided with an aluminum hydroxide outlet, a valve is arranged at the aluminum hydroxide outlet, and a loading vehicle 16 is arranged below the aluminum hydroxide outlet. The loading vehicle 16 is used to collect aluminum hydroxide.

[0024] Specifically, an alkylation liquid discharge port is also arranged at the bottom of the hydrolysis kettle 1, and the alkylation liquid discharge port is connected to the rectification device 17 system.

[0025] The working process of the present utility model is as follows:

[0026] Water is charged into the hydrolysis kettle 1 in advance, and the reaction solution of 2,6-di-tert-butylphenol is added into the hydrolysis kettle 1. The reaction solution of 2,6-di-tert-butylphenol undergoes a hydrolysis reaction under certain temperature and conditions. After the hydrolysis reaction is completed, an aqueous phase and an intermediate phase are formed in the hydrolysis kettle 1. Among them, the intermediate phase contains an alkylated solution and an aluminum hydroxide colloid.

[0027] The aqueous phase enters the recycled water tank 3 through the first liquid separation pump 4, and the recycled water in the recycled water tank 3 returns to the hydrolysis kettle 1 for continued use after passing through the filter 7.

[0028] The intermediate phase is pumped into the water evaporation kettle 2 through the second liquid separation pump 5. The vacuum system 12 is started, and the water evaporation kettle 2 performs distillation treatment under vacuum conditions. After condensation by the condenser 9, a part of the water enters the first storage tank 10, and another part of the alkylated solution enters the second storage tank 11.

[0029] The water in the first storage tank 10 is recycled to the recycled water tank 3 through the first feeding pump 13. The alkylated solution in the second storage tank 11 is pumped into the rectification device 17 through the second feeding pump 14 to obtain the 2,6-di-tert-butylphenol product through rectification, and the rectified material can be recycled. After all the alkylated solution is removed, the water in the intermediate phase is also removed, and the aluminum hydroxide colloid becomes solid aluminum hydroxide. The valve at the bottom of the water evaporation kettle 2 is opened to put the solid aluminum hydroxide into the loading truck 16, and it is collected and sold externally.

[0030] The present utility model provides a hydrolysis system device for the reaction solution of 2,6-di-tert-butylphenol, aiming to achieve the efficient progress of the hydrolysis reaction of the reaction solution of 2,6-di-tert-butylphenol and the effective separation and recovery of subsequent products through an integrated equipment layout. The present utility model can not only effectively solve the problems existing in the traditional hydrolysis reaction device, but also significantly improve the economic and environmental benefits, providing strong support for the sustainable development of fine chemical production.

[0031] It can be understood that the above specific description of the present utility model is only for explaining the present utility model and is not limited to the technical solutions described in the embodiments of the present utility model. Those of ordinary skill in the art should understand that the present utility model can still be modified or equivalently replaced to achieve the same technical effects; as long as it meets the usage requirements, it is within the protection scope of the present utility model.

Claims

1. A hydrolysis device for a 2,6-di-tert-butylphenol reaction solution, characterized in that: It includes a hydrolysis kettle (1), a water evaporation kettle (2), a recycled water tank (3), a first storage tank (10), a second storage tank (11), a falling film evaporator (8), a condenser (9), a filter (7), a vacuum system (12), and a rectification device (17); The hydrolysis kettle (1) is respectively connected to the water evaporation kettle (2) and the recycled water tank (3); an alkylated liquid discharge port is provided at the bottom of the hydrolysis kettle (1); a filter (7) is provided between the recycled water tank (3) and the hydrolysis kettle (1), and a falling film evaporator (8) and a condenser (9) are provided at the top of the water evaporation kettle (2); the inlet of the falling film evaporator (8) is connected to the bottom of the water evaporation kettle (2), and the outlet of the falling film evaporator (8) is connected to the top of the water evaporation kettle (2); the outlet of the condenser (9) is respectively connected to the first storage tank (10), the second storage tank (11), and the vacuum system (12), the first storage tank (10) is connected to the recycled water tank (3), and the second storage tank (11) is connected to the rectification device (17).

2. The hydrolysis device for the 2,6-di-tert-butylphenol reaction solution according to claim 1, wherein: The water evaporation kettle (2) is provided with an aluminum hydroxide outlet, a valve is provided at the aluminum hydroxide outlet, and a loading vehicle (16) is provided below the aluminum hydroxide outlet.

3. The hydrolysis device for the 2,6-di-tert-butylphenol reaction solution according to claim 1, characterized in that: A first liquid separation pump (4) is provided between the hydrolysis kettle (1) and the recycled water tank (3), and a second liquid separation pump (5) is provided between the hydrolysis kettle (1) and the water evaporation kettle (2); a water supply pump (6) is provided between the recycled water tank (3) and the filter (7).

4. The hydrolysis device for the 2,6-di-tert-butylphenol reaction solution according to claim 1, characterized in that: A first charging pump (13) is provided between the first storage tank (10) and the recycled water tank (3); a second charging pump (14) is provided between the second storage tank (11) and the rectification device (17).

5. A hydrolysis device for a 2,6-di-tert-butylphenol reaction solution according to claim 1, characterized in that: The vacuum system (12) includes a vacuum pump, a vacuum buffer tank, and a vacuum tail gas tank, and the vacuum buffer tank, the vacuum pump, and the vacuum tail gas tank are connected in sequence.

6. The hydrolysis device for the 2,6-di-tert-butylphenol reaction solution according to claim 1, characterized in that: The alkylated liquid discharge port is connected to the rectification device (17).

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