Deacidification device in bisphenol A production process

Abstract

The utility model relates to the technical field of bisphenol A production, and discloses a deacidification device in a bisphenol A production process. The deacidification device comprises a reaction box, two feeding pipes are symmetrically distributed at the top of the reaction box, a first liquid outlet pipe is arranged at the bottom of the reaction box, a liquid storage box is fixedly installed at the bottom of the reaction box, and a second liquid outlet pipe is arranged at the bottom of the liquid storage box. A first liquid outlet pipe is arranged in the liquid storage tank, a second liquid outlet pipe is arranged on one side of the liquid storage tank, three stirring shafts are rotationally installed between the two sides of the inner wall of the reaction tank, and stirring rods are arranged on the outer surfaces of the three stirring shafts. The three stirring shafts are arranged, so that the stirring rods arranged on the outer surfaces of the three stirring shafts fully stir mixed liquid in the reaction box, acidic substances in raw materials can be in full contact with alkaline substances, the reaction rate of acid-base neutralization is increased, the reaction time is shortened, and the deacidification efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bisphenol A production, in particular to an acid removal device in the production process of bisphenol A. Background Technique

[0002] Bisphenol A, also known as BPA, is an organic compound with the molecular formula C15H16O2. Industrially, bisphenol A is used to synthesize materials such as polycarbonate (PC) and epoxy resin. Since the 1960s, it has been used to manufacture plastic (milk) bottles, suckling cups for infants, and the inner coatings of food and beverage (milk powder) cans. And a variety of substances need to be added in the production process of bisphenol A, and there are many processes. And some substances contain certain acidic substances, resulting in poor quality of the produced bisphenol A and also causing certain impacts on the human body when used.

[0003] The existing acid removal method generally adds alkaline substances to the raw materials, so that the acidic substances in the raw materials react with the alkaline substances to generate salts and water harmless to the human body. However, the above-mentioned acid removal method makes the acidic substances and alkaline substances in the raw materials unable to fully contact, resulting in too long reaction time between acid and alkali, thus affecting the acid removal efficiency and being inconvenient to use. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an acid removal device in the production process of bisphenol A, which has the advantage of stirring acid and alkali, and solves the problems put forward in the above background technique.

[0005] The utility model provides the following technical scheme: an acid removal device in the production process of bisphenol A, including a reaction tank, two feed pipes are symmetrically arranged at the top of the reaction tank, a first liquid outlet pipe is arranged at the bottom of the reaction tank, a liquid storage tank is fixedly installed at the bottom of the reaction tank, the first liquid outlet pipe is arranged inside the liquid storage tank, a second liquid outlet pipe is arranged on one side of the liquid storage tank, three stirring shafts are rotatably installed between the two sides of the inner wall of the reaction tank, stirring rods are arranged on the outer surfaces of the three stirring shafts, and a driving mechanism for driving the three stirring shafts to rotate is arranged on one side of the reaction tank.

[0006] Preferably, the driving mechanism includes a support seat fixedly installed on one side of the reaction tank, a servo motor is arranged on the top of the support seat, one end of each of the three stirring shafts penetrates through one side of the reaction tank, a driving belt pulley is fixedly installed at one end of one of the stirring shafts, driven belt pulleys are fixedly installed at one ends of the other two stirring shafts, a belt is arranged between the driving belt pulley and the driven belt pulleys, and the output shaft of the servo motor is fixedly connected to one side of the driving belt pulley.

[0007] Preferably, a filter frame is slidably installed between two sides of the inner wall of the liquid storage tank. The filter frame is arranged below the first liquid outlet pipe, and a limiting component for limiting the filter frame is arranged on one side of the liquid storage tank.

[0008] Preferably, the limiting component includes two fixed shafts symmetrically distributed and fixedly installed on both sides of the liquid storage tank. A limiting plate is rotatably sleeved on the outer surface of one end of the fixed shaft. A first magnetic block is arranged on the side of the limiting plate close to the liquid storage tank. Second magnetic blocks are inlaid on both the left and right sides of the filter frame, and the opposite sides of the first magnetic block and the second magnetic block have opposite magnetic poles.

[0009] Preferably, the bottom of the reaction tank is constructed with an arc surface.

[0010] Compared with the prior art, the present utility model has the following beneficial effects:

[0011] 1. By driving the three stirring shafts to rotate through the driving mechanism, the stirring rods arranged on the outer surfaces of the three stirring shafts fully stir the mixed liquid inside the reaction tank, enabling the acidic substances in the raw materials to come into full contact with the alkaline substances, thereby accelerating the reaction rate of acid-base neutralization, reducing the reaction time, and improving the acid removal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0013] Figure 2 is a sectional view of the three-dimensional structure of the present utility model Figure 1 ;

[0014] Figure 3 is a sectional view of the three-dimensional structure of the present utility model Figure 2 ;

[0015] Figure 4 is Figure 3 an enlarged view of part A in

[0016] In the figure: 1, reaction tank; 101, feed pipe; 102, first liquid outlet pipe; 2, liquid storage tank; 201, second liquid outlet pipe; 3, stirring shaft; 4, stirring rod; 5, driving mechanism; 51, support seat; 52, servo motor; 53, driving pulley; 54, driven pulley; 55, belt; 6, filter frame; 7, limiting component; 71, fixed shaft; 72, limiting plate; 73, first magnetic block; 74, second magnetic block; 8, arc surface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figures 1 - 4 A deacidification device in a bisphenol A production process comprises a reaction box 1, wherein two feed pipes 101 are symmetrically arranged on the top of the reaction box 1, a first liquid outlet pipe 102 is arranged at the bottom of the reaction box 1, a liquid storage box 2 is fixedly installed at the bottom of the reaction box 1, the first liquid outlet pipe 102 is arranged inside the liquid storage box 2, a second liquid outlet pipe 201 is arranged on one side of the liquid storage box 2, three stirring shafts 3 are rotatably installed between the two sides of the inner wall of the reaction box 1, stirring rods 4 are arranged on the outer surfaces of the three stirring shafts 3, a driving mechanism 5 for driving the three stirring shafts 3 to rotate is arranged on one side of the reaction box 1, a solenoid valve (not shown) is arranged on the outer surface of the first liquid outlet pipe 102, and a heating ring can be arranged on the outer surface of the reaction box 1 to further accelerate the reaction rate of the acidic substance and the alkaline substance in the raw material.

[0019] See also Figures 1 - 2 The driving mechanism 5 includes a support base 51 fixedly mounted on one side of the reaction box 1, a servo motor 52 is arranged on the top of the support base 51, one end of the three stirring shafts 3 passes through one side of the reaction box 1, a driving pulley 53 is fixedly mounted on one end of one of the stirring shafts 3, and a driven pulley 54 is fixedly mounted on one end of the other two stirring shafts 3, a belt 55 is arranged between the driving pulley 53 and the driven pulley 54, the output shaft of the servo motor 52 is fixedly connected to one side of the driving pulley 53, the driving pulley 53 and the two driven pulleys 54 are distributed in a triangle, and the three pulleys are connected through a belt 55.

[0020] See also Figure 1 A filter frame 6 is slidably installed between the two sides of the inner wall of the liquid storage tank 2. The filter frame 6 is arranged below the first liquid outlet pipe 102. A limiting component 7 for limiting the filter frame 6 is provided on one side of the liquid storage tank 2, which is convenient for the staff to disassemble and clean the filter frame 6.

[0021] See also Figure 1 , Figure 2 and Figure 4, the limiting component 7 includes two fixed shafts 71 symmetrically distributed and fixedly installed on both sides of the liquid storage tank 2 respectively. A limiting plate 72 is rotatably sleeved on the outer surface of one end of the fixed shaft 71. A first magnet 73 is arranged on the side of the limiting plate 72 close to the liquid storage tank 2. Second magnets 74 are embedded on both the left and right sides of the filter frame 6. The opposite sides of the first magnet 73 and the second magnet 74 have opposite magnetic poles. The first magnet 73 can be installed on one side of the limiting plate 72 by glue. The limiting plate 72 can rotate around the fixed shaft 71. When the filter frame 6 needs to be disassembled, manually push the limiting plate 72 to rotate it around one end of the fixed shaft 71 and separate the first magnet 73 from the second magnet 74, so as to release the limiting fixation of the filter frame 6. At this time, the staff can directly pull or push the filter frame 6 to slide it along the inner wall of the liquid storage tank 2 and move it out of the liquid storage tank 2. Vice versa.

[0022] Please refer to Figure 2 , the bottom of the reaction tank 1 is constructed with a curved surface 8, and the curved surface 8 is used to prevent a large amount of solution from remaining at the bottom inside the reaction tank 1, thus wasting resources.

[0023] Working principle: When in use, raw materials and alkaline substances are respectively injected into the reaction tank 1 through two feed pipes 101. Then, the servo motor 52 is started. The output shaft of the servo motor 52 drives the driving pulley 53 to rotate. Under the action of the belt 55, the other two driven pulleys 54 are driven to rotate synchronously, so as to drive the three stirring shafts 3 and the stirring rods 4 arranged on the outer surface of the stirring shafts 3 to rotate synchronously, thereby fully stirring the raw materials and alkaline substances in the reaction tank 1 and accelerating the reaction rate of acid-base neutralization. The neutralized mixed liquid is discharged into the liquid storage tank 2 through the first liquid outlet pipe 102, and the filter frame 6 filters solid particles such as impurities generated during the reaction. The liquid flows into the bottom inside the liquid storage tank 2 through the filter frame 6 and is finally discharged out of the liquid storage tank 2 through the second liquid outlet pipe 201.

Claims

1. A deacidification device in a bisphenol A production process, comprising a reaction box (1), wherein two feed pipes (101) are symmetrically arranged on the top of the reaction box (1), and a first liquid outlet pipe (102) is arranged on the bottom of the reaction box (1), characterized in that: A liquid storage box (2) is fixedly mounted at the bottom of the reaction box (1); the first liquid outlet pipe (102) is arranged inside the liquid storage box (2); a second liquid outlet pipe (201) is arranged on one side of the liquid storage box (2); three stirring shafts (3) are rotatably mounted between two sides of the inner wall of the reaction box (1); stirring rods (4) are arranged on the outer surfaces of the three stirring shafts (3); and a driving mechanism (5) for driving the three stirring shafts (3) to rotate is arranged on one side of the reaction box (1).

2. The acid removal device in the bisphenol A production process according to claim 1, characterized in that: The driving mechanism (5) comprises a support base (51) fixedly mounted on one side of the reaction box (1); a servo motor (52) is arranged on the top of the support base (51); one end of each of the three stirring shafts (3) passes through one side of the reaction box (1); one end of one of the stirring shafts (3) is fixedly mounted with a driving pulley (53); one end of each of the other two stirring shafts (3) is fixedly mounted with a driven pulley (54); a belt (55) is arranged between the driving pulley (53) and the driven pulley (54); and the output shaft of the servo motor (52) is fixedly connected to one side of the driving pulley (53).

3. The acid removal device in the bisphenol A production process according to claim 1, characterized in that: A filter frame (6) is slidably mounted between the two sides of the inner wall of the liquid storage box (2); the filter frame (6) is arranged below the first liquid outlet pipe (102); and a limiting component (7) for limiting the position of the filter frame (6) is arranged on one side of the liquid storage box (2).

4. The acid removal device in the bisphenol A production process according to claim 3, characterized in that: The limit assembly (7) comprises two fixed shafts (71) which are symmetrically distributed and fixedly mounted on both sides of the liquid storage tank (2); the outer surface of one end of the fixed shaft (71) is rotatably sleeved on a limit plate (72); a first magnetic block (73) is arranged on a side of the limit plate (72) close to the liquid storage tank (2); and second magnetic blocks (74) are inlaid on both left and right sides of the filter frame (6); and the magnetic poles of the first magnetic block (73) and the second magnetic block (74) on the side opposite to each other are opposite.

5. The acid removal device in the bisphenol A production process according to claim 1, characterized in that: The bottom of the reaction box (1) is structured with a curved surface (8).

Images