Chlorinated polyethylene reaction kettle

Abstract

The utility model relates to the technical field of chemical equipment, in particular to a chlorinated polyethylene reaction kettle which comprises a chlorinated polyethylene reaction kettle body, a gear box is arranged at the top end of the chlorinated polyethylene reaction kettle body, a rotatable stirring rod is arranged in the gear box, an outer sleeve rod is sleeved outside the stirring rod, and the bottom end of the stirring rod and the bottom end of the outer sleeve rod are both connected with stirring paddles. A chlorine adding assembly is arranged between the two stirring paddles and comprises a chlorine adding ring, the two ends of the chlorine adding ring communicate with connecting pipes, a shielding piece is rotationally connected into the chlorine adding ring and comprises a rotatable connecting cylinder, and the top end and the bottom end of the connecting cylinder are connected with an upper baffle and a lower baffle correspondingly. The top end of the chlorine adding ring, the bottom end of the chlorine adding ring, the upper baffle and the lower baffle are all provided with through holes matched with one another. Therefore, in the production process of chlorinated polyethylene, the contact area of chlorine and polyethylene can be increased, the chlorine and the polyethylene are fully contacted and reacted, and the temperature in the whole reaction kettle is more accurately monitored due to multi-point temperature control.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a chlorinated polyethylene reaction kettle. Background Art

[0002] Chlorinated polyethylene is mostly produced using aqueous suspension synthesis technology, that is, high-density polyethylene powder is added to the water in a chlorinated polyethylene reactor to form an aqueous suspension, and then an excess of high-pressure chlorine gas is introduced into the chlorinated polyethylene reactor to cause a substitution reaction between chlorine gas and polyethylene to form chlorinated polyethylene.

[0003] At present, the existing chlorinated polyethylene reactor, for example, the Chinese patent with publication number CN218981551U, discloses a chlorinated polyethylene reactor, including a reactor body, the main body of the reactor body is a cylindrical structure, the upper end of which is open and the bottom is sealed, the upper end of the reactor body is provided with a reactor cover, the reactor body and the reactor cover are connected by a flange, the inner wall of the reactor body is provided with a spiral guide plate, the reactor body is provided with a flow shield, the main body of the flow shield is a cylindrical structure, the flow shield is coaxially arranged with the reactor body, the lower end of the cylindrical structure is open, the top is provided with a sealing cover plate, the upper end of the side wall of the cylindrical structure is provided with a flow guide outlet, and at least one is provided inside the flow shield. An impeller is provided, which pushes the suspension inside the flow isolator to flow from bottom to top. A chlorine feed pipe is provided at the bottom of the kettle body. The chlorine feed pipe extends to the inside of the kettle body and is connected with an annular gas outlet pipe. The impeller pushes the suspension inside the flow isolator to flow from bottom to top, so that the suspension outside the flow isolator flows from top to bottom, and the suspension forms a circulating flow in the kettle body. However, the method of passing chlorine at the bottom of the above device has a slow reaction. Once materials are accumulated, it will lead to uneven reaction. The reaction between chlorine and polyethylene is not uniform, and the temperature of the materials in the entire reactor cannot be accurately monitored, and the purpose of stabilizing product quality cannot be achieved.

[0004] How to increase the contact area between chlorine and polyethylene during the production of chlorinated polyethylene so that chlorine and polyethylene can fully contact and react, and how to control the temperature at multiple points to more accurately monitor the temperature in the entire reactor has become a technical problem that needs to be broken through.

[0005] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] In view of the above-mentioned defects, the purpose of the utility model is to provide a chlorinated polyethylene reactor, which has a simple structure and is easy to use. During the production process of chlorinated polyethylene, the contact area between chlorine and polyethylene can be increased so that chlorine and polyethylene can fully contact and react. In addition, multi-point temperature control can more accurately monitor the temperature in the entire reactor.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a chlorinated polyethylene reactor, comprising a chlorinated polyethylene reactor body, a gear box is provided at the top of the chlorinated polyethylene reactor body, a rotatable stirring rod is provided in the gear box, a rotatable outer rod is provided outside the stirring rod, the bottom ends of the stirring rod and the outer rod are both inserted into the chlorinated polyethylene reactor body to connect with a stirring paddle, and the bottom end of the outer rod is higher than the bottom end of the stirring rod.

[0008] A chlorination assembly is arranged between the two stirring paddles, and the chlorination assembly comprises a chlorination ring sleeved on the outside of the stirring rod, both ends of the chlorination ring are connected to connecting pipes, and one end of the connecting pipe away from the chlorination ring passes through the chlorinated polyethylene reactor body, and a shielding member is rotatably connected inside the chlorination ring, and the shielding member comprises a rotatable connecting cylinder, the top and bottom ends of the connecting cylinder are respectively connected to an upper baffle and a lower baffle, and the top end of the chlorination ring, the bottom end of the chlorination ring, the upper baffle and the lower baffle are all provided with through holes that cooperate with each other.

[0009] According to the chlorinated polyethylene reactor of the utility model, the external jacket of the chlorinated polyethylene reactor body includes an upper jacket, a middle jacket and a lower jacket, and a plurality of baffles are arranged on the inner wall of the chlorinated polyethylene reactor body. An upper temperature sensor, a middle temperature sensor and a lower temperature sensor cooperating with the upper jacket, the middle jacket and the lower jacket are arranged in the baffles.

[0010] According to the chlorinated polyethylene reactor of the utility model, an auxiliary stirring assembly is provided inside the gear box, and the auxiliary stirring assembly includes an active bevel gear and a driven bevel gear sleeved on the outside of the stirring rod, one side of the active bevel gear and the driven bevel gear are both engaged with the transmission bevel gear, and the bottom end of the driven bevel gear is connected to the outer sleeve rod.

[0011] According to the chlorinated polyethylene reactor of the utility model, the outer sleeve of the connecting tube is provided with a driven regulating gear, one side of the chlorination ring is provided with a regulating box, a rotatable active regulating gear is provided inside the regulating box, and the active regulating gear meshes with the driven regulating gear.

[0012] According to the chlorinated polyethylene reactor of the utility model, the active adjustment gear is connected to the second driving member, and the second driving member is connected to the adjustment box.

[0013] According to the chlorinated polyethylene reactor of the utility model, the top end of the stirring rod passes through the gear box and is connected to the first driving member, and the first driving member is connected to the gear box.

[0014] The purpose of the utility model is to provide a chlorinated polyethylene reactor, comprising a stirring rod, an outer rod and a chlorination assembly, wherein a turbulent flow is formed between the stirring paddle on the stirring rod and the stirring paddle on the outer rod, thereby increasing the contact area between chlorine and polyethylene, so that chlorine and polyethylene can fully contact and react; through the data of the upper temperature sensor, the middle temperature sensor and the lower temperature sensor, the water inlet and outlet of the upper jacket, the middle jacket and the lower jacket are adjusted to achieve multi-point temperature control, so that the temperature monitoring in the entire reactor is more accurate; the through holes on the upper baffle plate and the lower baffle plate are staggered with the through holes on the top and bottom of the chlorination ring, so that the liquid in the chlorinated polyethylene reactor body can be prevented from flowing into the chlorination ring. In summary, the beneficial effects of the utility model are: in the process of chlorinated polyethylene production, the contact area between chlorine and polyethylene can be increased, so that chlorine and polyethylene can fully contact and react, and the multi-point temperature control can be performed to more accurately monitor the temperature in the entire reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the structural diagram of the utility model;

[0016] Figure 2 for Figure 1 Enlarged view of part A;

[0017] Figure 3 This is the structural diagram of the chlorination ring;

[0018] Figure 4 The structural diagram of the active adjustment gear;

[0019] In the figure: 1-chlorinated polyethylene reactor body, 11-stirring rod, 12-first driving member, 13-baffle, 14-gear box, 2-auxiliary stirring assembly, 21-active bevel gear, 22-transmission bevel gear, 23-driven bevel gear, 24-outer rod, 3-stirring paddle, 4-chlorination assembly, 41-chlorination ring, 42-connecting pipe, 43-shielding member, 431-upper baffle, 432-lower baffle, 433-driven adjusting gear, 5-through hole, 6-adjusting box, 61-active adjusting gear, 62-second driving member. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "sleeved / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0023] See also Figure 1 and Figure 2The utility model provides a chlorinated polyethylene reactor, comprising a chlorinated polyethylene reactor body 1 (the structure of the chlorinated polyethylene reactor body 1 is the same as that of the prior art, and its specific structure and working principle, such as the feed port, the discharge port and other structures, are not repeated here), a gear box 14 is provided at the top of the chlorinated polyethylene reactor body 1, a stirring rod 11 is provided in the gear box 14, the top end of the stirring rod 11 passes through the gear box 14 and is connected to a first driving member 12, the first driving member 12 can drive the stirring rod 11 to rotate, the first driving member 12 is connected to the gear box 14, and the bottom end of the stirring rod 11 The gear box 14 is inserted into the chlorinated polyethylene reactor body 1, and an auxiliary stirring assembly 2 is provided inside the gear box 14. The auxiliary stirring assembly 2 includes an active bevel gear 21 sleeved on the outside of the stirring rod 11. One side of the active bevel gear 21 is meshed with a transmission bevel gear 22, and the transmission bevel gear 22 is meshed with a driven bevel gear 23. The driven bevel gear 23 is rotatably connected to the outside of the stirring rod 11. The bottom end of the driven bevel gear 23 is connected to an outer sleeve rod 24. The driven bevel gear 23 can drive the outer sleeve rod 24 to rotate. The outer sleeve rod 24 is rotatably connected to the outside of the stirring rod 11, and the bottom end of the outer sleeve rod 24 is inserted into the chlorinated polyethylene reactor body 1 The bottom of the outer sleeve 24 is higher than the bottom of the stirring rod 11. The lower part of the stirring rod 11 inside the chlorinated polyethylene reactor body 1 and the outer periphery of the lower part of the outer sleeve 24 are both provided with stirring paddles 3. The outer jacket of the chlorinated polyethylene reactor body 1 includes an upper jacket, a middle jacket and a lower jacket. A plurality of baffles 13 are provided on the inner wall of the chlorinated polyethylene reactor body 1. The baffles 13 are provided with an upper temperature sensor, a middle temperature sensor and a lower temperature sensor (i.e., one of the baffles 13 located at the upper jacket is provided with a temperature sensor) that cooperate with the upper jacket, the middle jacket and the lower jacket. There is an upper temperature sensor, a middle temperature sensor is provided in one of the baffles 13 located at the middle jacket, and a lower temperature sensor is provided in one of the baffles 13 located at the lower jacket). Through the data of the upper temperature sensor, the middle temperature sensor and the lower temperature sensor, the water inlet and outlet of the upper jacket, the middle jacket and the lower jacket are adjusted (the use of temperature sensors to regulate the water inlet flow rate of the jacket is a mature prior art in this field, and its specific structure and working principle will not be repeated here), so as to accurately control the temperature in the chlorinated polyethylene reactor body 1.

[0024] See also Figure 1 , Figure 3 and Figure 4A chlorination assembly 4 is provided on the outside of the stirring rod 11 between the stirring paddle 3 on the stirring rod 11 and the stirring paddle 3 on the outer rod 24. The chlorination assembly 4 includes a chlorination ring 41 sleeved on the outside of the stirring rod 11. The chlorination ring 41 is hollow inside. Both ends of the chlorination ring 41 are connected to a connecting pipe 42. One end of the connecting pipe 42 away from the chlorination ring 41 passes through the chlorinated polyethylene reactor body 1. The inside of the chlorination ring 41 is rotatably connected with a shielding member 43. The shielding member 43 includes an upper baffle 431 and a lower baffle 432. A connecting cylinder is connected between the upper baffle 431 and the lower baffle 432. A driven adjusting gear 433 is sleeved on the outside of the connecting cylinder. The top end of the chlorination ring 41, the bottom end of the chlorination ring 41, the upper baffle 431 and the lower baffle 432 are all provided with through holes 5 that cooperate with each other. When the through holes 5 on the upper baffle 431 and the lower baffle 432 are directly opposite to the top end and the bottom end of the chlorination ring 41, the through holes 5 on the upper baffle 431 and the lower baffle 432 are directly opposite to the top end and the bottom end of the chlorination ring 41. When the through hole 5 on the upper part is opened, chlorine is passed into the connecting pipe 42, and the chlorine can be dispersed from the through hole 5 after passing through the connecting pipe 42 and the chlorination ring 41. A regulating box 6 is provided on one side of the chlorination ring 41, and an active regulating gear 61 is provided inside the regulating box 6. The active regulating gear 61 is rotatably connected to the regulating box 6, and the active regulating gear 61 meshes with the driven regulating gear 433. The active regulating gear 61 can drive the driven regulating gear 433 to rotate. The active regulating gear 61 is connected to the second driving member 62, and the second driving member 62 is connected to the regulating box 6. The second driving member 62 can drive the active regulating gear 61 to rotate. The second driving member 62 is opened, and the rotation angle of the shielding member 43 is controlled, so that the through holes 5 on the upper baffle plate 431 and the lower baffle plate 432 are staggered with the through holes 5 on the top end and the bottom end of the chlorination ring 41 to prevent the liquid in the chlorinated polyethylene reactor body 1 from flowing into the chlorination ring 41.

[0025] See also Figures 1 to 4 Preferably, the second driving member 62 and the first driving member 12 are both rotating motors to provide power for the device.

[0026] See also Figures 1 to 4 Preferably, in the utility model, the structure inserted on the chlorinated polyethylene reactor body 1 should be sealed with the chlorinated polyethylene reactor body 1 to maintain the pressure inside the chlorinated polyethylene reactor body 1 and prevent the material from escaping. Some electrical equipment inside the chlorinated polyethylene reactor body 1 should be waterproofed. This is a conventional method in the field and will not be described here.

[0027] See also Figures 1 to 4During production, the through holes 5 on the upper baffle plate 431 and the lower baffle plate 432 are aligned with the through holes 5 on the top and bottom of the chlorination ring 41, and the first driving member 12 is turned on to start production. Turbulence is formed between the stirring paddle 3 on the stirring rod 11 and the stirring paddle 3 on the outer sleeve rod 24, so that the materials inside the chlorinated polyethylene reactor body 1 are mixed evenly, and the contact area between chlorine and polyethylene is increased, so that chlorine and polyethylene are fully contacted and reacted. At the same time, the water inlet and outlet of the upper jacket, the middle jacket and the lower jacket are adjusted through the data of the upper temperature sensor, the middle temperature sensor and the lower temperature sensor, and the temperature inside the chlorinated polyethylene reactor body 1 is accurately controlled. After production is completed, the second driving member 62 is turned on to stagger the through holes 5 on the upper baffle plate 431 and the lower baffle plate 432 with the through holes 5 on the top and bottom of the chlorination ring 41 to prevent the liquid in the chlorinated polyethylene reactor body 1 from flowing into the chlorination ring 41.

[0028] The utility model provides a chlorinated polyethylene reactor, including a stirring rod, an outer rod and a chlorination assembly, wherein a turbulent flow is formed between the stirring paddle on the stirring rod and the stirring paddle on the outer rod, thereby increasing the contact area between chlorine and polyethylene, so that chlorine and polyethylene can fully contact and react; through the data of the upper temperature sensor, the middle temperature sensor and the lower temperature sensor, the water inlet and outlet of the upper jacket, the middle jacket and the lower jacket are adjusted to achieve multi-point temperature control, so that the temperature monitoring in the entire reactor is more accurate; the through holes on the upper baffle plate and the lower baffle plate are staggered with the through holes on the top end and the bottom end of the chlorination ring, so that the liquid in the chlorinated polyethylene reactor body can be prevented from flowing into the chlorination ring. In summary, the beneficial effects of the utility model are: in the process of chlorinated polyethylene production, the contact area between chlorine and polyethylene can be increased, so that chlorine and polyethylene can fully contact and react, and the temperature can be controlled at multiple points, so that the temperature monitoring in the entire reactor is more accurate.

[0029] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A chlorinated polyethylene reactor, characterized in that: The invention comprises a chlorinated polyethylene reactor body, wherein a gear box is arranged at the top of the chlorinated polyethylene reactor body, a rotatable stirring rod is arranged in the gear box, a rotatable outer rod is arranged outside the stirring rod, the bottom ends of the stirring rod and the outer rod are both inserted into the chlorinated polyethylene reactor body to connect with a stirring paddle, and the bottom end of the outer rod is higher than the bottom end of the stirring rod; A chlorination assembly is provided between the two stirring paddles, the chlorination assembly comprises a chlorination ring sleeved on the outside of the stirring rod, both ends of the chlorination ring are connected to the connecting pipe, one end of the connecting pipe away from the chlorination ring passes through the chlorinated polyethylene reactor body, the inside of the chlorination ring is rotatably connected with a shielding member, the shielding member comprises a rotatable connecting cylinder, the top and bottom ends of the connecting cylinder are respectively connected to an upper baffle and a lower baffle, and the top end of the chlorination ring, the bottom end of the chlorination ring, the upper baffle and the lower baffle are all provided with through holes that cooperate with each other; An auxiliary stirring assembly is arranged inside the gear box, and the auxiliary stirring assembly includes an active bevel gear and a driven bevel gear sleeved on the outside of the stirring rod, one side of the active bevel gear and the driven bevel gear are both meshed with the transmission bevel gear, and the bottom end of the driven bevel gear is connected to the outer sleeve rod.

2. The chlorinated polyethylene reactor according to claim 1, characterized in that: The outer jacket of the chlorinated polyethylene reactor body comprises an upper jacket, a middle jacket and a lower jacket. A plurality of baffles are arranged on the inner wall of the chlorinated polyethylene reactor body. An upper temperature sensor, a middle temperature sensor and a lower temperature sensor cooperating with the upper jacket, the middle jacket and the lower jacket are arranged in the baffles.

3. The chlorinated polyethylene reactor according to claim 1, characterized in that: The outer sleeve of the connecting cylinder is provided with a driven regulating gear, one side of the chlorination ring is provided with a regulating box, a rotatable active regulating gear is provided inside the regulating box, and the active regulating gear meshes with the driven regulating gear.

4. The chlorinated polyethylene reactor according to claim 3, characterized in that: The active adjustment gear is connected to a second driving member, and the second driving member is connected to the adjustment box.

5. The chlorinated polyethylene reactor according to claim 1, characterized in that: The top end of the stirring rod passes through the gear box and is connected to a first driving member, and the first driving member is connected to the gear box.

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