Reaction device for producing and preparing PVC (polyvinyl chloride) heat stabilizer

Abstract

The utility model relates to the technical field of PVC (Polyvinyl Chloride) heat stabilizer production, and discloses a reaction device for producing and preparing a PVC heat stabilizer, which comprises a reaction box, a pressure relief pipe is arranged at the top end of the reaction box, the pressure relief pipe is communicated and connected with an exhaust pipe, one side of the reaction box is connected with a cooling box in an embedded manner, and the cooling box is connected with an exhaust pipe. The tail end of the exhaust pipe penetrates through the top end of the reaction box and extends into the cooling box, a coiled pipe is arranged in the cooling box, and the air inlet end of the coiled pipe is communicated and connected with the tail end of the exhaust pipe; by arranging the pressure relief mechanism, pressure can be automatically relieved when the pressure is too large, the body damage caused by the too large pressure in the reaction box is avoided, the service life of the reaction device is effectively prolonged, the pressure condition in the reaction kettle does not need to be manually concerned in real time, the working difficulty is reduced, and the working efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PVC heat stabilizer production, in particular to a reaction device used for the production and preparation of PVC heat stabilizer. Background Art

[0002] PVC heat stabilizer is mainly used for PVC and other chlorine-containing polymers. People have found that PVC plastic can only be processed and molded at a temperature above 160°C, and it begins to thermally decompose at 120-130°C, releasing HCl gas. If the generation of HCl is not suppressed, the decomposition will be further aggravated. This problem has been the main difficulty that plagued the development and application of PVC plastics. The broad understanding of the reactor is a container with physical or chemical reactions. Through the structural design and parameter configuration of the container, the heating, evaporation, cooling and low-speed mixing functions required by the process can be achieved. The reactor is needed in the production process of PVC stabilizer;

[0003] The existing PVC heat stabilizer reproduction reaction is usually carried out in a reactor, and the PVC heat stabilizer will release a large amount of HCl gas during the reaction, which will cause the internal pressure of the reactor to continue to rise. When the pressure reaches a certain level, the reactor body will be damaged. Although the reactors on the market have a pressure relief mechanism, manual pressure relief is required, which requires the staff to pay real-time attention to the pressure situation inside the reactor, increasing the workload and greatly reducing the work efficiency of the staff, thereby reducing the production efficiency of the PVC heat stabilizer. To this end, we propose a reaction device for the production and preparation of PVC heat stabilizers. Utility Model Content

[0004] The main purpose of the utility model is to provide a reaction device for producing and preparing a PVC heat stabilizer, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a reaction device for the production and preparation of PVC heat stabilizer, comprising a reaction box, a pressure relief pipe is arranged at the top of the reaction box, the pressure relief pipe is interconnected with an exhaust pipe, a cooling box is inlaid on one side of the reaction box, and the end of the exhaust pipe passes through the top of the reaction box and extends into the interior of the cooling box, a serpentine pipe is arranged inside the cooling box, and the air inlet end of the serpentine pipe is interconnected with the end of the exhaust pipe, the bottom end of the serpentine pipe passes through the cooling box and extends to the outside of the bottom end of the cooling box, a water storage tank is arranged at the bottom end of the same side of the cooling box, and an air guide pipe is nested at the top of the water storage tank, and the top end of the air guide pipe is interconnected with the serpentine pipe, the pressure relief pipe comprises an outer shell interconnected to one side of the top of the reaction box, the upper end of the inner cavity of the outer shell is detachably connected to a fixing frame, a spring connecting rod is fixedly connected to the center position of the lower surface of the fixing frame, and a plug is fixedly connected to the bottom end of the spring connecting rod.

[0006] Preferably, a feeding box is fixedly connected to one side of the top of the reaction box, and there are multiple feeding boxes, and a liquid level sensor is provided in the inner cavity of the feeding box.

[0007] Preferably, a motor is embedded and connected to one side of the upper surface of the reaction box, and the power output end of the motor passes through the reaction box body and extends to the upper end of the inner cavity of the reaction box.

[0008] Preferably, a stirring rod is vertically provided in the inner cavity of the reaction box, and the top end of the stirring rod is detachably connected to the power output end of the motor.

[0009] Preferably, the upper end of the outer side wall of the cooling box is interconnected with a water injection pipe, and the lower end of the outer side wall of the cooling box is interconnected with a drainage pipe.

[0010] Preferably, a discharge pipe is embedded and connected to the bottom end of the inner cavity of the reaction box.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model releases HCl gas through the pressure relief pipe when the PVC heat stabilizer reacts. With the continuous release of gas, the air pressure in the reaction box will continue to increase. During the increase, the plug inside the pressure relief pipe will be continuously squeezed upward, thereby compressing the spring connecting rod on the back of the plug. When the pressure is high, the plug will be separated from the pipe in the inner cavity of the pressure relief pipe, thereby allowing the HCl gas to be discharged to the outside through the air guide pipe, thereby realizing the automatic pressure relief function of the reaction box, avoiding damage to the body of the reaction box due to excessive internal pressure, effectively extending the service life of the reaction device, and eliminating the need for manual real-time attention to the pressure situation inside the reactor, reducing the difficulty of work, and thus improving work efficiency.

[0013] 2. The utility model provides a cooling box and a water storage tank, and injects cooling water into the cooling box by means of a water injection pipe. When HCl gas is discharged outward, the HCl gas transported outward through the serpentine pipe will exchange heat with the cooling water in the cooling box, thereby cooling the HCl gas. After cooling, the HCl gas is discharged into the water storage tank through the exhaust pipe, and dissolved in the water in the water storage tank, thereby preventing the HCl gas from being directly discharged, thereby effectively protecting the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a cross-sectional view of the reaction box of the utility model;

[0016] Figure 3 This is a structural schematic diagram of the exploded view of the pressure relief pipe of the utility model.

[0017] In the figure: 1. reaction box; 2. feeding box; 3. pressure relief pipe; 4. exhaust pipe; 5. motor; 6. cooling box; 7. water injection pipe; 8. drainage pipe; 9. air guide pipe; 10. water storage tank; 11. liquid level sensor; 12. serpentine pipe; 13. stirring rod; 14. discharge pipe; 301. outer shell; 302. fixing frame; 303. spring connecting rod; 304. plug. DETAILED DESCRIPTION

[0018] 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.

[0019] Example

[0020] See also Figure 1 - Figure 3, a reaction device for the production and preparation of PVC heat stabilizer shown in the figure, including a reaction box 1, a pressure relief pipe 3 is arranged at the top of the reaction box 1, and the pressure relief pipe 3 is interconnected with an exhaust pipe 4, a cooling box 6 is embedded and connected to one side of the reaction box 1, and the end of the exhaust pipe 4 passes through the top of the reaction box 1 and extends to the inside of the cooling box 6, a serpentine pipe 12 is arranged inside the cooling box 6, and the air inlet end of the serpentine pipe 12 is interconnected with the end of the exhaust pipe 4, and the bottom end of the serpentine pipe 12 passes through the cooling box 6 and extends to the cooling box 6. The reaction box 1 is provided with a water storage tank 10 at the bottom end on the same side of the cooling box 6, and an air guide tube 9 is nested at the top of the water storage tank 10, and the top of the air guide tube 9 is interconnected with the serpentine tube 12, and the pressure relief pipe 3 includes a shell 301 interconnected with one side of the top of the reaction box 1, and the upper end of the inner cavity of the shell 301 is detachably connected to a fixed frame 302, and the center position of the lower surface of the fixed frame 302 is fixedly connected to a spring connecting rod 303, and the bottom end of the spring connecting rod 303 is fixedly connected to Plug 304; with the help of the pressure relief pipe 3, the pressure in the reaction box 1 can be automatically relieved when the internal pressure is too high. During the downward pressure process, the HCl gas transported outward through the serpentine pipe 12 will exchange heat with the cooling water in the cooling box 6, thereby cooling it down, and after cooling, it will be discharged into the water storage tank 10 through the exhaust pipe 4, and dissolved in the water body in the water storage tank 10, preventing it from being directly discharged, thereby effectively protecting the working environment. At the same time, HCl gas will be released during the reaction of the PVC heat stabilizer. As the gas is continuously released, the air pressure in the reaction box 1 will continue to increase, and during the increase process, the plug 304 inside the pressure relief pipe 3 will be continuously squeezed upward, thereby compressing the spring connecting rod 303 on the back of the plug 304. When the pressure is too high, the plug 304 will be separated from the pipeline in the inner cavity of the pressure relief pipe 3, thereby allowing the HCl gas to be discharged outward through the air guide pipe 9, thereby realizing the automatic pressure relief function of the reaction box 1, avoiding damage to the body of the reaction box 1 caused by excessive internal pressure, and effectively extending the service life of the reaction device.

[0021] Among them, a feeding box 2 is fixedly connected to one side of the top of the reaction box 1, and there are multiple feeding boxes 2. A liquid level sensor 11 is provided in the inner cavity of the feeding box 2; the heat stabilizer is injected into the feeding box 2, and the amount of raw materials put into the feeding box 2 is detected by the liquid level sensor 11 in the feeding box, so as to realize quantitative feeding, thereby ensuring the later reaction effect.

[0022] Among them, a motor 5 is embedded and connected to one side of the upper surface of the reaction box 1, and the power output end of the motor 5 passes through the reaction box 1 and extends to the upper end of the inner cavity of the reaction box 1. A stirring rod 13 is vertically provided in the inner cavity of the reaction box 1, and the top of the stirring rod 13 is detachably connected to the power output end of the motor 5; the stirring rod 13 is driven by the motor 5 to rotate to stir the material so that it can be quickly mixed and reacted, thereby improving the reaction efficiency, and then improving the production efficiency of the PVC heat stabilizer.

[0023] Among them, the upper end of the outer wall of the cooling box 6 is interconnected with a water injection pipe 7, the lower end of the outer wall of the cooling box 6 is interconnected with a drain pipe 8, and the bottom end of the inner cavity of the reaction box 1 is inlaid with a discharge pipe 14; cooling water is injected into the cooling box 6 by means of the water injection pipe 7, and when the HCl gas is discharged outward, the HCl gas transported outward through the serpentine pipe 12 will exchange heat with the cooling water in the cooling box 6, thereby cooling it, and the water body can be discharged from the cooling box 6 through the drain pipe 8, which is convenient for water replacement, thereby ensuring the cooling effect, and after mixing, the mixed material can be quickly discharged through the discharge pipe 14, which is convenient for collection.

[0024] It should be noted that the utility model is a reaction device for the production and preparation of PVC heat stabilizer. The heat stabilizer is injected into the feeding box 2, and the amount of raw materials put into the feeding box 2 is detected by the liquid level sensor 11 in the feeding box, so as to achieve quantitative feeding. After the feeding, the raw materials put into the inside are heated by means of a heating pipe used in conjunction with the bottom end of the inner cavity of the reaction box 1, so that the raw materials continue to react. At the same time, during the reaction process, the stirring rod 13 is driven by the motor 5 to rotate to stir the materials so that they can be quickly mixed and reacted, thereby improving the reaction efficiency and further improving the production efficiency of the PVC heat stabilizer.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reaction device for producing a PVC heat stabilizer, comprising a reaction box (1), characterized in that: The top of the reaction box (1) is provided with a pressure relief pipe (3), the pressure relief pipe (3) is interconnected with an exhaust pipe (4), one side of the reaction box (1) is inlaid with a cooling box (6), and the end of the exhaust pipe (4) passes through the top of the reaction box (1) and extends into the interior of the cooling box (6), a serpentine pipe (12) is provided inside the cooling box (6), and the air inlet end of the serpentine pipe (12) is interconnected with the end of the exhaust pipe (4), the bottom end of the serpentine pipe (12) passes through the cooling box (6) and extends to the outside of the bottom end of the cooling box (6), and the reaction box (1) is located at the cooling box (6). A water storage tank (10) is provided at the bottom end of the same side of the reaction box (6), and an air guide tube (9) is nested at the top end of the water storage tank (10), and the top end of the air guide tube (9) is interconnected with the serpentine tube (12), and the pressure relief pipe (3) comprises a shell (301) interconnected with one side of the top end of the reaction box (1), and the upper end of the inner cavity of the shell (301) is detachably connected to a fixing frame (302), and a spring connecting rod (303) is fixedly connected to the center position of the lower surface of the fixing frame (302), and a plug (304) is fixedly connected to the bottom end of the spring connecting rod (303).

2. A reaction device for producing PVC heat stabilizer according to claim 1, characterized in that: A feeding box (2) is fixedly connected to one side of the top end of the reaction box (1), and there are multiple feeding boxes (2). A liquid level sensor (11) is provided in the inner cavity of the feeding box (2).

3. A reaction device for producing PVC heat stabilizer according to claim 1, characterized in that: A motor (5) is embedded and connected to one side of the upper surface of the reaction box (1), and the power output end of the motor (5) penetrates the body of the reaction box (1) and extends to the upper end of the inner cavity of the reaction box (1).

4. A reaction device for producing PVC heat stabilizer according to claim 1, characterized in that: A stirring rod (13) is vertically arranged in the inner cavity of the reaction box (1), and the top end of the stirring rod (13) is detachably connected to the power output end of the motor (5).

5. The reaction device for producing PVC heat stabilizer according to claim 1, characterized in that: The upper end of the outer wall of the cooling box (6) is interconnected with a water injection pipe (7), and the lower end of the outer wall of the cooling box (6) is interconnected with a drainage pipe (8).

6. A reaction device for producing PVC heat stabilizer according to claim 1, characterized in that: A discharge pipe (14) is embedded and connected to the bottom end of the inner cavity of the reaction box (1).

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