Tert-butyl isocyanate low-toxicity condensation reaction device

Abstract

The utility model discloses a low-toxicity condensation reaction device for tert-butyl isocyanate, which relates to the technical field of tert-butyl isocyanate and comprises an electric heating plate arranged in the inner wall of a reaction kettle body; the rotating rod penetrates through the upper end wall of the reaction kettle body, and the rotating rod is rotatably arranged on the upper end wall of the reaction kettle body; the plurality of feeding pipes are arranged on the upper end wall of the reaction kettle body; the pressure release valve pipe is arranged on the upper end wall of the reaction kettle body; the pressure meter is arranged on the upper end wall of the reaction kettle body; the air inlet pipe and the exhaust pipe are arranged on the upper end wall of the reaction kettle body; the first stirring pipe and the second stirring pipe are respectively arranged at one end, extending into the reaction kettle body, of the rotating rod; one end of the first stirring pipe is communicated with the first liquid inlet cavity, the other end is communicated with the first liquid outlet cavity, one end of the second stirring pipe is communicated with the second liquid inlet cavity, and the other end is communicated with the second liquid outlet cavity; the reaction kettle has the advantages of being convenient to use, reducing generation of harmful substances, improving sufficiency of condensation reaction and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of tertiary butyl isocyanate, especially relates to a tertiary butyl isocyanate low toxicity condensation reaction device. BACKGROUND

[0002] Tertiary butyl isocyanate is an organic compound, belonging to isocyanate compound, often used in the condensation reaction in organic synthesis. Its molecular structure contains an isocyanate group (-N=C=O) and a tertiary butyl (t-Bu) group. Tertiary butyl isocyanate has important application in organic synthesis, especially in the construction of nitrogen-containing heterocyclic compounds, polymers and drug intermediates, but the condensation reaction of tertiary butyl isocyanate in the prior art adopts the reaction kettle with low functionality, and the treatment capacity of harmful components in the condensation reaction is poor. In the process of condensation reaction, the sufficiency of reaction is also very important, which determines the content of harmful components, so the application sets up a tertiary butyl isocyanate low toxicity condensation reaction device. UTILITY MODEL CONTENT

[0003] The technical problem to be solved by the utility model is to provide a tertiary butyl isocyanate low toxicity condensation reaction device to solve the problem of insufficient sufficiency of tertiary butyl isocyanate condensation reaction in the prior art, more toxic components, and poor control ability of the reaction kettle to the reaction process, i.e. low functionality.

[0004] To achieve the above object, the utility model provides the following technical scheme: a tertiary butyl isocyanate low toxicity condensation reaction device, comprising

[0005] The reaction kettle body has a discharge pipe at the lower end.

[0006] The electric heating plate is arranged in the inner wall of the reaction kettle body.

[0007] The rotating rod penetrates the upper end wall of the reaction kettle body, and the rotating rod is rotatably arranged on the upper end wall of the reaction kettle body.

[0008] The plurality of feed pipes are arranged on the upper end wall of the reaction kettle body.

[0009] The pressure relief valve pipe is arranged on the upper end wall of the reaction kettle body.

[0010] The pressure gauge is arranged on the upper end wall of the reaction kettle body.

[0011] The gas inlet pipe and the gas outlet pipe are arranged on the upper end wall of the reaction kettle body.

[0012] The first stirring pipe and the second stirring pipe are respectively arranged at one end of the rotating rod extending into the reaction kettle body.

[0013] The rotating rod has a first liquid inlet chamber, a first liquid outlet chamber, a second liquid inlet chamber, and a second liquid outlet chamber. One end of the first stirring tube is connected to the first liquid inlet chamber and the other end is connected to the first liquid outlet chamber. One end of the second stirring tube is connected to the second liquid inlet chamber and the other end is connected to the second liquid outlet chamber.

[0014] Preferably, a toothed ring is fixedly sleeved on the outer wall of the rotating rod, a crossbeam is provided on the outer wall of the reactor body, a servo motor is provided on the crossbeam, and a gear that meshes with the toothed ring is provided at the output end of the servo motor.

[0015] Preferably, the reactor body has a liquid guiding hopper, the lower end of which has a mesh plate, the rotating rod passes through the mesh plate and the liquid guiding hopper, and the mesh plate is fixedly connected to the rotating rod.

[0016] Preferably, the upper end of the liquid guiding funnel is provided with a flared funnel, which is fixedly connected to the rotating rod by several connecting rods.

[0017] The beneficial effects of adopting the above technical solutions are:

[0018] This application, through the provision of a first and a second liquid inlet chamber, allows for the injection of coolant into the first and second stirring tubes to cool the solution within the reactor body, while the heating plate heats the solution. This effectively controls the reaction temperature. The rotating rod drives the first and second stirring tubes to rotate, resulting in a more uniform temperature. The inlet pipe introduces inert gas, and the outlet pipe discharges harmful gases produced after the reaction. A pressure gauge monitors the pressure within the reactor body, and a pressure relief valve releases pressure. Therefore, this application offers enhanced functionality and better control over the reaction temperature. Attached Figure Description

[0019] Figure 1 This is a front view of a low-toxicity condensation reaction apparatus for tert-butyl isocyanate according to this utility model.

[0020] Figure 2 This is a cross-sectional view of a low-toxicity condensation reaction apparatus for tert-butyl isocyanate according to this utility model.

[0021] Figure 3 This is a partial schematic diagram of the rotating rod of this utility model.

[0022] The components include: reactor body 10, discharge pipe 20, feed pipe 30, air inlet pipe 31, exhaust pipe 32, pressure gauge 33, pressure relief valve pipe 34, rotating rod 40, gear ring 41, gear 42, servo motor 43, crossbeam frame 44, first stirring pipe 50, first liquid inlet chamber 51, first liquid outlet chamber 52, second stirring pipe 60, second liquid inlet chamber 61, second liquid outlet chamber 62, heating plate 70, liquid guide hopper 80, mesh plate 81, flared hopper 82, and connecting rod 83. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0024] like Figures 1-3 In this first embodiment, a low-toxicity condensation reaction apparatus for tert-butyl isocyanate includes...

[0025] The reactor body 10 has a discharge pipe 20 at its lower end;

[0026] The heating plate 70 is installed inside the inner wall of the reactor body 10;

[0027] A rotating rod 40 penetrates the upper end wall of the reactor body 10, and the rotating rod 40 is rotatably disposed on the upper end wall of the reactor body 10.

[0028] Several feed pipes 30 are provided on the upper end wall of the reactor body 10;

[0029] The pressure relief valve pipe 34 is installed on the upper wall of the reactor body 10;

[0030] Pressure gauge 33 is installed on the upper wall of the reactor body 10;

[0031] The air inlet pipe 31 and the exhaust pipe 32 are installed on the upper wall of the reactor body 10;

[0032] The first stirring tube 50 and the second stirring tube 60 are respectively located at one end of the rotating rod 40 that extends into the reactor body 10;

[0033] The rotating rod 40 has a first liquid inlet chamber 51, a first liquid outlet chamber 52, a second liquid inlet chamber 61, and a second liquid outlet chamber 62. One end of the first stirring tube 50 is connected to the first liquid inlet chamber 51 and the other end is connected to the first liquid outlet chamber 52. One end of the second stirring tube 60 is connected to the second liquid inlet chamber 61 and the other end is connected to the second liquid outlet chamber 62.

[0034] This embodiment is implemented as follows:

[0035] When the application is used, raw materials are introduced into the reaction kettle body 10 through the feed pipe 30, the gas inlet pipe 31 is used to introduce inert gas into the reaction kettle body 10, the gas outlet pipe 32 is used to discharge the harmful gas generated in the reaction kettle body 10 and introduce it into the external absorption tower for treatment, and the pressure gauge 33 can monitor the gas pressure in the reaction kettle body 10. When the gas pressure is too large, the pressure relief valve pipe 34 is used to release the gas. During the reaction process, the reaction kettle body 10 is heated by the electric heating plate 70, and the first liquid inlet cavity 51 and the second liquid inlet cavity 61 can respectively inject cooling liquid into the first stirring pipe 50 and the second stirring pipe 60, and flow out from the first liquid outlet cavity 52 and the second liquid outlet cavity 62 respectively. This realizes effective control of the temperature in the reaction kettle body 10, makes the reaction conditions more complex, and reduces the generation of harmful components.

[0036] Please refer to Figure 1 、 2 The outer wall of the rotating rod 40 is fixedly provided with a gear ring 41, the outer wall of the reaction kettle body 10 is provided with a cross beam frame 44, the cross beam frame 44 is provided with a servo motor 43, and the output end of the servo motor 43 is provided with a gear 42 engaged with the gear ring 41.

[0037] The servo motor 43 can drive the gear 42 to reciprocating rotate, the gear 42 drives the gear ring 41 to reciprocating rotate, and the gear ring 41 drives the rotating rod 40 to reciprocating rotate.

[0038] Please refer to Figure 2 The reaction kettle body 10 has a liquid guide 80, the lower end of the liquid guide 80 has a mesh plate 81, the rotating rod 40 penetrates through the mesh plate 81 and the liquid guide 80, and the mesh plate 81 is fixedly connected with the rotating rod 40.

[0039] The liquid guide 80 can rotate with the rotating rod 40, and the liquid guide 80 can receive the falling raw materials, so that the raw materials pass through the mesh plate 81 and can uniformly fall in the middle position of the reaction kettle body 10, so that the reaction is more uniform.

[0040] Please refer to Figure 2 The upper end of the liquid guide 80 is provided with an expanded hopper 82, and the expanded hopper 82 is fixedly connected with the rotating rod 40 through a plurality of connecting rods 83.

[0041] The expanded hopper 82 can introduce raw materials into the liquid guide 80, and the connecting rod 83 connects the rotating rod 40 and the expanded hopper 82, thereby increasing the stability of the liquid guide 80.

[0042] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the art, without departing from the creative concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A low-toxicity condensation reaction apparatus for tert-butyl isocyanate, characterized in that, The utility model relates to a reaction kettle body, lower end has the discharge pipe; Electric heating plate is arranged in the inner wall of reaction kettle body; Rotary rod is through the upper end wall of reaction kettle body, and the rotary rod rotatably arranged in the upper end wall of reaction kettle body; A plurality of feed pipes are arranged on the upper end wall of reaction kettle body; Pressure relief valve pipe is arranged on the upper end wall of reaction kettle body; Pressure gauge is arranged on the upper end wall of reaction kettle body; Gas inlet pipe, exhaust pipe are arranged on the upper end wall of reaction kettle body; First stirring pipe, second stirring pipe are arranged respectively in the one end of rotary rod that extends into reaction kettle body. Wherein, the rotary rod has first liquid inlet chamber, first liquid outlet chamber, second liquid inlet chamber and second liquid outlet chamber, one end of the first stirring pipe is communicated with the first liquid inlet chamber, the other end is communicated with the first liquid outlet chamber, one end of the second stirring pipe is communicated with the second liquid inlet chamber, the other end is communicated with the second liquid outlet chamber. The outer wall of the rotary rod is fixedly sleeved with a gear ring, the outer wall of the reaction kettle body is provided with a cross beam frame, the cross beam frame is provided with a servo motor, and the output end of the servo motor is provided with a gear engaged with the gear ring.

2. A tertiary butyl isocyanate low toxicity condensation reaction apparatus according to claim 1, characterized by, The reaction kettle body has a liquid guide hopper, the lower port of the liquid guide hopper has a mesh plate, the rotary rod penetrates the mesh plate and the liquid guide hopper, and the mesh plate is fixedly connected with the rotary rod.

3. A tertiary butyl isocyanate low toxicity condensation reaction apparatus according to claim 1, characterized by, The upper port of the liquid guide hopper is provided with an expanded hopper, and the expanded hopper is fixedly connected with the rotary rod through a plurality of connecting rods.

4. A tertiary butyl isocyanate low toxicity condensation reaction apparatus according to claim 3, wherein ​

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