Separation and purification device for producing tert-butyl isocyanate

Abstract

A separation and purification device for producing tert-butyl isocyanate comprises a fixing plate with a mounting rod at the top, a rotating rod rotationally connected with the mounting rod is arranged on the upper portion of the mounting rod, one end of the rotating rod is rotationally connected with the mounting rod, a mounting ring is arranged at the other end of the mounting rod, and a detachable flask is arranged on the mounting ring. A one-way valve capable of exhausting is arranged at the top of the flask, a feeding pipe capable of feeding is arranged on the side face of the flask, a drainage pipe capable of discharging is arranged at the bottom of the flask, and a control rod for controlling discharging is arranged on the side face of the drainage pipe; the device disclosed by the utility model is simple and reasonable in structure, and can effectively reduce the operation steps of an operator in purification work.

Description

Technical Field

[0001] This utility model relates to the field of purification of tert-butyl isocyanate, specifically a separation and purification device for the production of tert-butyl isocyanate. Background Technology

[0002] The purification of tert-butyl acetate requires mixing tert-butanol and hydrochloric acid, followed by precipitation. The lower layer solution is then discharged, and the precipitate is washed multiple times with water and discharged again for purification. Each mixing and washing process requires shaking and venting. Existing flasks require repeated opening and closing to vent during mixing and venting, which is extremely inconvenient. Operators must repeatedly open the flask's sealing plug to vent during the purification process. Utility Model Content

[0003] The present invention aims to provide a separation and purification device for the production of tert-butyl isocyanate to reduce the workload of operators in the purification process of tert-butyl isocyanate.

[0004] To solve the above technical problems, the specific solution adopted by this utility model is as follows:

[0005] A separation and purification apparatus for producing tert-butyl isocyanate includes a fixed plate with a mounting rod at the top, a rotating rod rotatably connected to the upper part of the mounting rod, one end of the rotating rod being rotatably connected to the mounting rod, a mounting ring on the other end of the mounting rod, a detachable flask on the mounting ring, a one-way valve for venting gas at the top of the flask, a feeding pipe for adding material on the side of the flask, a drain pipe for discharging material at the bottom of the flask, and a control rod for controlling the discharging of material on the side of the drain pipe.

[0006] The flask is provided with a threaded sealing cap at the top. The one-way valve includes an exhaust pipe located at the top of the sealing cap. The exhaust pipe is connected to the inside of the flask. The exhaust pipe is provided with a slidingly connected pressing rod. The bottom of the pressing rod is provided with a sealing block for sealing. The top of the pressing rod is provided with a pressing block for the operator to press. A spring is sleeved on the pressing rod. The spring is located between the bottom of the pressing block and the bottom of the exhaust pipe.

[0007] The flask has threads on its circumference, and the flask is connected to the mounting ring via the threads.

[0008] The mounting rod is provided with a rotating hole. The end of the rotating rod opposite to the mounting ring passes through the rotating hole and is provided with a connecting rod thereon. The angle between the connecting rod and the rotating rod is 90°. The connecting rod is provided with a rocker arm that allows the operator to hold and rotate the rotating rod. The top of the mounting rod is provided with a fixing rod to fix the rotating rod.

[0009] The joystick is equipped with a protective cover made of rubber.

[0010] The drain pipe has a through adjustment hole on its side, and the control rod is located inside the adjustment hole. The control rod has a drain hole, and the control rod is rotated to align the drain hole with the drain pipe for drainage.

[0011] Due to the adoption of the above technical solution, this utility model has the following beneficial effects:

[0012] The flask is mounted by a rotating rod that can be rotatably connected to the mounting rod, and a mounting ring is installed on the rotating rod. A one-way valve is installed at the top of the flask for rapid venting, and a feeding pipe is installed on the side of the flask for adding hydrochloric acid and water. A control rod is provided to facilitate the operator to quickly discharge the lower layer solution during the mixing process. A vertical fixing rod is used to position the rotating rod to facilitate subsequent heating operations. This utility model has a simple and reasonable structure, which can effectively reduce the number of steps required for operators in the purification process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a side view of the present invention;

[0015] Figure 3 This is a schematic diagram of the one-way valve structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the control lever structure of this utility model;

[0017] 1. Fixing plate; 2. Mounting rod; 3. Rotating rod; 4. Connecting rod; 5. Rocker arm; 6. Protective sleeve; 7. Fixing rod; 8. Mounting ring; 9. Flask; 10. Drain pipe; 11. Control rod; 12. Check valve; 13. Feeding pipe; 14. Sealing cap; 15. Exhaust pipe; 16. Pressing rod; 17. Spring; 18. Sealing block; 19. Pressing block. Detailed Implementation

[0018] like Figures 1-4The apparatus shown is a separation and purification device for producing tert-butyl isocyanate, comprising a fixed plate 1 with a mounting rod 2 on top, a rotating rod 3 rotatably connected to the upper part of the mounting rod 2, one end of the rotating rod 3 being rotatably connected to the mounting rod 2, and a mounting ring 8 on the other end of the mounting rod 2. A detachable flask 9 is mounted on the mounting ring 8. A one-way valve 12 for venting is provided on the top of the flask 9, a feeding pipe 13 for adding material is provided on the side of the flask 9, and a drain pipe 10 for discharging material is provided on the bottom of the flask 9. A control rod 11 for controlling the discharging is provided on the side of the drain pipe 10. After the control rod 11 is rotated, its internal drain hole is aligned with the drain pipe 10 to drain the material. The flask 9 is used to purify tert-butyl isocyanate. A sealing cap is provided on the feeding pipe 13 to prevent liquid from spilling out of the flask 9 during rotation.

[0019] The flask 9 has a threaded sealing cap 14 at its top. The one-way valve 12 includes an exhaust pipe 15 located at the top of the sealing cap 14. The exhaust pipe 15 is connected to the inside of the flask 9. The exhaust pipe 15 has a slidingly connected pressing rod 16 inside. The bottom of the pressing rod 16 has a sealing block 18 for sealing. The top of the pressing rod 16 has a pressing block 19 for the operator to press. A spring 17 is sleeved on the pressing rod 16. The spring 17 is located between the bottom of the pressing block 19 and the bottom of the exhaust pipe 15. By pressing the pressing block 12, the pressing rod 16 moves downward, thereby causing the sealing block 18 to leave the bottom of the exhaust pipe 15, allowing air to circulate inside the flask 9 to achieve the function of exhaust.

[0020] The flask 9 has threads on its circumference. The flask 9 is threaded to the mounting ring 8. The threaded structure on the outside of the flask 9 makes it easier to disassemble the flask, making it more secure and practical. It can also prevent the flask from falling off during rotation.

[0021] The mounting rod 2 is provided with a rotating hole. The end of the rotating rod 3 opposite to the mounting ring 8 passes through the rotating hole and is provided with a connecting rod 4. The angle between the connecting rod 4 and the rotating rod 3 is 90°. The connecting rod 4 is provided with a rocker arm 5, which is convenient for the operator to hold and rotate the rotating rod 3. The operator can rotate the flask 9 by rotating the rocker arm 5, thereby increasing the shaking speed.

[0022] The rocker arm 5 is equipped with a rubber protective cover 6, which can play a role in preventing slippage.

[0023] The drain pipe 10 has a through-hole adjustment hole on its side. The control rod 11 is located inside the adjustment hole and has a drain hole. During rotation, the control rod 11 aligns the drain hole with the drain pipe 10 to drain water. The control rod 11, as... Figure 4 As shown, this allows for quick and easy drainage of the liquid inside flask 9.

[0024] The method of using this utility model is briefly described as follows:

[0025] During operation, tert-butanol and concentrated hydrochloric acid are poured into flask 9, and then the sealing cap 14 is closed. The rocker arm 5 is used to rotate the flask. After mixing, the flask is rotated again to mix the tert-butanol. After mixing, the rotating rod 3 is fixed by rotating the fixing rod 7, which causes the tert-butanol inside flask 9 to precipitate and separate into layers. After separation, the liquid is discharged by rotating the control rod 11. After discharge, the one-way valve 12 is vented by pressing the pressing block 19. Next, water is poured into the flask through the feeding pipe 13 for washing. Then, the rocker arm 5 is rotated to mix the tert-butanol. After venting, the liquid is discharged after separation. Finally, the purification operation is completed by heating flask 9.

Claims

1. An isolation and purification apparatus for producing t-butyl isocyanate, characterized by: Including the fixed plate (1) provided with the installation rod (2) on the top, the upper portion of the installation rod (2) is provided with the rotary connection rotary rod (3), one end of the rotary rod (3) is rotatably connected with the installation rod (2), the other end of the installation rod (2) is provided with the mounting ring (8), the mounting ring (8) is provided with the detachable flask (9), the top of the flask (9) is provided with the one-way valve (12) that can exhaust, the side of the flask (9) is provided with the feeding pipe (13) that can add material, the bottom of the flask (9) is provided with the drain pipe (10) that can discharge, the side of the drain pipe (10) is provided with the control rod (11) for controlling the discharge.

2. The separation and purification apparatus for producing tert-butyl isocyanate according to claim 1, characterized by: The top of the flask (9) is provided with the sealing cover (14) that is threadedly connected, the one-way valve (12) includes the exhaust pipe (15) arranged on the top of the sealing cover (14), the exhaust pipe (15) is communicated with the inside of the flask (9), the inside of the exhaust pipe (15) is provided with the press rod (16) that is slidably connected, the bottom of the press rod (16) is provided with the sealing block (18) for sealing, the top of the press rod (16) is provided with the press block (19) for the operator to press, the press rod (16) is provided with the spring (17) on the press rod (16), the spring (17) is located between the bottom of the press block (19) and the bottom of the exhaust pipe (15).

3. The separation and purification apparatus for producing tert-butyl isocyanate according to claim 1, characterized by: The circumferential surface of the flask (9) is provided with threads, and the flask (9) is threadedly connected with the mounting ring (8).

4. The separation and purification apparatus for producing tert-butyl isocyanate according to claim 1, characterized by: The installation rod (2) is provided with a rotating hole, and one end of the rotary rod (3) opposite to the mounting ring (8) penetrates through the rotating hole and is provided with a connecting rod (4) thereon, the connecting rod (4) and the rotary rod (3) form an angle of 90°, the connecting rod (4) is provided with a rocker (5) facilitating the operator to hold and rotate the rotary rod (3), and the top of the installation rod (2) is provided with a fixing rod (7) for fixing the rotary rod (3).

5. The separation and purification apparatus for producing tert-butyl isocyanate according to claim 4, characterized by: The rocker (5) is provided with a protective sleeve (6) made of rubber.

6. The separation and purification apparatus for producing tert-butyl isocyanate according to claim 1, characterized by: The side of the drain pipe (10) is provided with a through adjusting hole, and the control rod (11) is arranged in the adjusting hole, the control rod (11) is provided with a drain hole, and the control rod (11) is aligned with the drain pipe (10) during rotation to drain water.

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