Gas-phase polypropylene reactor capable of controlling start-up temperature

Abstract

The utility model discloses a gaseous phase polypropylene reactor capable of controlling start-up temperature, which relates to the field of gaseous phase polypropylene process, and comprises a reactor body and four support legs fixed on the bottom surface of the reactor body, the surface of the reactor body is sleeved with a temperature control sleeve, the bottom ends of the four support legs are fixedly connected with a bottom plate, and the bottom plate is fixedly connected with the reactor body. A cooling assembly capable of reducing the temperature of the reactor body is arranged on the top surface of the bottom plate, and a heating assembly capable of increasing the temperature of the reactor body is arranged on the top surface of the bottom plate. According to the reactor disclosed by the utility model, the cooling assembly and the heating assembly are matched, so that the internal temperature of the reactor body can be controlled when the reactor body is started, and the internal temperature of the reactor body reaches a proper temperature, thereby preventing the internal temperature of the reactor body from being too high or low to influence the reaction effect of polypropylene; therefore, the overall practicability of the reactor body is improved.

Description

Technical Field

[0001] The utility model relates to the field of gas phase polypropylene technology, in particular to a gas phase polypropylene reactor capable of controlling the start-up temperature. Background Art

[0002] The polypropylene process can produce homopolymers, random copolymers, general impact copolymers and thermoplastic polyolefin elastomers. Compared with other vertical stirred reactors or fully mixed fluidized bed reactors, this process uses two horizontal reactors, the first reactor is used to produce the homopolymer part, and the second reactor is used to produce the random copolymer part, so as to produce various high-quality impact copolymers. Due to its unique reactor structure, coupled with the high-performance JHC / JHN catalyst, it can produce polypropylene products with high ethylene content and rubber content.

[0003] After searching, the applicant found that a Chinese patent disclosed "a polypropylene kettle reactor" with the publication number "CN110975791A". The patent mainly designed a sealing gasket. When the connecting pipe is inside the fixed cover, the top of the connecting pipe presses against the sealing gasket, and the groove is subjected to force. Under the action of the groove, the groove pushes the sealing gasket to press against the top surface of the connecting pipe, thereby improving the sealing performance.

[0004] The above device can improve the sealing performance of the reactor through a series of structures, but the above reactor cannot control the start-up temperature when it is used, so that the temperature in the reactor cannot be adjusted according to the actual situation, thereby affecting the reaction of polypropylene. Utility Model Content

[0005] The utility model aims to provide a gas phase polypropylene reactor with controllable start-up temperature, so as to solve the problem that the above device proposed in the above background technology cannot adjust the temperature in the reactor when in use, resulting in that the temperature in the reactor cannot be changed according to actual conditions, thereby affecting the polypropylene reaction effect.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas phase polypropylene reactor with controllable start-up temperature, comprising a reactor body and four supporting legs fixed to the bottom surface of the reactor body, the surface of the reactor body is sleeved with a temperature control sleeve, the bottom ends of the four supporting legs are commonly fixedly connected to a bottom plate, the top surface of the bottom plate is provided with a cooling component capable of lowering the temperature of the reactor body, and the top surface of the bottom plate is provided with a heating component capable of raising the temperature of the reactor body.

[0007] Preferably, the heating component includes a steam pump, the bottom surface of the steam pump is fixedly connected to the top surface of the base plate, the output end of the steam pump is fixedly connected to an air supply pipe, the other end of the air supply pipe is fixedly connected to the surface of the temperature control sleeve and communicates with the interior of the temperature control sleeve.

[0008] Preferably, the temperature increasing component further comprises a gas valve, and the gas valve is arranged on the pipe wall of the air supply pipe.

[0009] Preferably, the cooling component comprises a refrigeration box, the bottom surface of the refrigeration box is fixedly connected to the top surface of the bottom plate, a refrigeration fin is provided inside the refrigeration box, a refrigeration end is fixedly connected to the top surface of the refrigeration fin, and a heat dissipation end is provided on the bottom surface of the refrigeration fin.

[0010] Preferably, the cooling component further comprises a conducting plate, the bottom surface of the conducting plate is fixedly connected to the top surface of the refrigeration end, and the four sides of the surface of the conducting plate are respectively fixedly connected to the four sides of the inner wall of the refrigeration box.

[0011] Preferably, the cooling component also includes a return pipe, one end of which is fixedly connected to one side of the surface of the refrigeration box and communicates with the interior of the refrigeration box, and the other end of which is fixedly connected to the surface of the temperature control sleeve and communicates with the interior of the temperature control sleeve.

[0012] Preferably, the cooling component also includes a water pump, the bottom surface of the water pump is fixedly connected to the top surface of the bottom plate, the input end of the water pump is communicated with the interior of the refrigeration box, the output end of the water pump is fixedly connected to a water supply pipe, one end of the water supply pipe is fixedly connected to the surface of the temperature control sleeve and communicated with the interior of the temperature control sleeve.

[0013] Preferably, a pressure relief pipe is fixedly connected to the top surface of the temperature control sleeve, and a pressure relief valve is provided on the pipe wall of the pressure relief pipe.

[0014] Preferably, a water inlet is provided on the top surface of the refrigeration box, and the water inlet is communicated with the interior of the refrigeration box. A heat dissipation port is provided on one side of the refrigeration box, and a dustproof net is fixedly connected to the inner wall of the heat dissipation port.

[0015] Preferably, a water inlet is provided on the top surface of the refrigeration box, and the water inlet is communicated with the interior of the refrigeration box. A heat dissipation port is provided on one side of the refrigeration box, and a dustproof net is fixedly connected to the inner wall of the heat dissipation port.

[0016] The technical effects and advantages of the utility model are as follows: the utility model can control the temperature inside the reactor body when the reactor body is started by arranging a cooling component and a heating component to make the temperature inside the reactor body reach a suitable temperature, thereby avoiding the temperature inside the reactor body being too high or affecting the reaction effect of polypropylene, thereby improving the overall practicality of the reactor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0018] Figure 2 It is a rear view structural schematic diagram of the utility model.

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the refrigeration box of the utility model.

[0020] Figure 4 It is a schematic diagram of the side cross-sectional structure of the refrigeration box of the utility model.

[0021] In the figure: 1. Reactor body; 2. Cooling component; 3. Heating component; 4. Temperature control sleeve; 5. Sealing cover; 6. Temperature monitor; 7. Pressure relief pipe; 8. Pressure relief valve; 9. Support leg; 10. Bottom plate; 11. Heat dissipation port; 12. Dust screen; 13. Water inlet; 201. Refrigeration box; 202. Return pipe; 203. Conducting plate; 204. Refrigeration end; 205. Refrigeration plate; 206. Water supply pipe; 207. Heat dissipation end; 208. Water pump; 301. Steam pump; 302. Air supply pipe; 303. Gas valve. DETAILED DESCRIPTION

[0022] 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.

[0023] The utility model provides Figure 1-4 A gas phase polypropylene reactor with controllable start-up temperature is shown, comprising a reactor body 1 and four supporting legs 9 fixed to the bottom surface of the reactor body 1. A temperature control sleeve 4 is sleeved on the surface of the reactor body 1, and the temperature control sleeve 4 can change the temperature inside the reactor body 1 as the internal temperature changes. A bottom plate 10 is fixedly connected to the bottom ends of the four supporting legs 9. A cooling component 2 capable of reducing the temperature of the reactor body 1 is provided on the top surface of the bottom plate 10. A heating component 3 capable of increasing the temperature of the reactor body 1 is provided on the top surface of the bottom plate 10. By arranging the cooling component 2 and the heating component 3 to cooperate, the internal temperature of the reactor body 1 can be controlled when the reactor body 1 is started, so that the temperature inside the reactor body 1 reaches a suitable temperature, thereby avoiding the temperature inside the reactor body 1 being too high or affecting the reaction effect of polypropylene, thereby improving the overall practicality of the reactor body 1.

[0024] like Figure 1 and Figure 2 As shown, the heating component 3 includes a steam pump 301, which can produce high-temperature steam. The bottom surface of the steam pump 301 is fixedly connected to the top surface of the bottom plate 10, and the output end of the steam pump 301 is fixedly connected to an air supply pipe 302, which can deliver steam into the interior of the temperature control sleeve 4. The other end of the air supply pipe 302 is fixedly connected to the surface of the temperature control sleeve 4 and communicates with the interior of the temperature control sleeve 4. The heating component 3 also includes a gas valve 303, which is arranged on the pipe wall of the air supply pipe 302.

[0025] like Figure 2-4 As shown, the cooling component 2 includes a refrigeration box 201, the bottom surface of the refrigeration box 201 is fixedly connected to the top surface of the bottom plate 10, a refrigeration plate 205 is arranged inside the refrigeration box 201, the top surface of the refrigeration plate 205 is fixedly connected to the refrigeration end 204, and the bottom surface of the refrigeration plate 205 is provided with a heat dissipation end 207, the cooling component 2 also includes a conduction plate 203, the conduction plate 203 can conduct temperature so that the water temperature inside the refrigeration box 201 is reduced, the bottom surface of the conduction plate 203 is fixedly connected to the top surface of the refrigeration end 204, and the four sides of the surface of the conduction plate 203 are respectively fixedly connected to the four sides of the inner wall of the refrigeration box 201, and the cooling component 2 also includes a return pipe 202, which can transfer the water flowing through the temperature control sleeve 4 is sent back to the refrigeration box 201 for re-cooling, one end of the return pipe 202 is fixedly connected to one side of the surface of the refrigeration box 201 and communicates with the interior of the refrigeration box 201, the other end of the return pipe 202 is fixedly connected to the surface of the temperature control sleeve 4 and communicates with the interior of the temperature control sleeve 4, the cooling component 2 also includes a water pump 208, the bottom surface of the water pump 208 is fixedly connected to the top surface of the bottom plate 10, the input end of the water pump 208 is communicated with the interior of the refrigeration box 201, the output end of the water pump 208 is fixedly connected with a water supply pipe 206, the water supply pipe 206 can deliver water to the interior of the temperature control sleeve 4, one end of the water supply pipe 206 is fixedly connected to the surface of the temperature control sleeve 4 and communicates with the interior of the temperature control sleeve 4.

[0026] like Figure 1 and Figure 3 As shown, a pressure relief pipe 7 is fixedly connected to the top surface of the temperature control sleeve 4, and a pressure relief valve 8 is provided on the wall of the pressure relief pipe 7. The pressure relief valve 8 can prevent the pressure inside the temperature control sleeve 4 from being too high. A water inlet 13 is provided on the top surface of the refrigeration box 201. The water inlet 13 is convenient for adding water to the inside of the refrigeration box 201. The water inlet 13 is communicated with the inside of the refrigeration box 201. A heat dissipation port 11 is provided on one side of the refrigeration box 201. The heat dissipation port 11 can facilitate the heat dissipation end 207 of the refrigeration plate 205 to dissipate heat. A dustproof net 12 is fixedly connected to the inner wall of the heat dissipation port 11.

[0027] like Figure 1As shown, a sealing cover 5 is provided on the top of the reactor body 1, and a temperature monitor 6 is provided on the top surface of the sealing cover 5. The temperature monitor 6 can monitor the temperature inside the reactor body 1 in real time to prevent the temperature inside the reactor body 1 from being too high or too low. The detection end of the temperature monitor 6 extends to the inside of the reactor body 1.

[0028] The working principle of the utility model is as follows: when the reactor body 1 is used, the steam pump 301 is first started and the gas valve 303 is opened. Then, after the steam pump 301 is started, the generated high-temperature steam is sent into the interior of the temperature control jacket 4 through the gas delivery pipe 302. Then, the temperature inside the reactor body 1 is increased through the temperature control jacket 4. At the same time, the pressure relief valve 8 is set to prevent the pressure inside the temperature control jacket 4 from being too high to cause safety hazards. The temperature inside the reactor body 1 is monitored in real time through the temperature monitor 6 to prevent the temperature inside the reactor body 1 from being too high to affect the reaction of polypropylene.

[0029] When the temperature monitor 6 detects that the internal temperature of the reactor body 1 exceeds the specified value, the steam pump 301 automatically disconnects the power supply and stops supplying steam to the temperature control sleeve 4, so that the temperature in the reactor body 1 slowly decreases. When the temperature drops to the specified minimum range, the steam pump 301 starts again to increase the temperature in the reactor body 1, so that the temperature inside the reactor body 1 is always in the set temperature range. When it is necessary to quickly lower the temperature in the reactor body 1, the refrigeration plate 205 is connected to the power supply, so that the refrigeration end 204 of the refrigeration plate 205 is refrigerated and the water inside the refrigeration box 201 is refrigerated through the conduction plate 203, and then the water is sent into the temperature control sleeve 4 through the water pump 208 and the water supply pipe 206, so as to circulate in the temperature control sleeve 4, so that the temperature control sleeve 4 and the reactor body 1 can achieve the effect of rapid cooling. The original text highlights the innovative structure and does not elaborate on the prior art.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas phase polypropylene reactor capable of controlling the start-up temperature, comprising a reactor body (1) and four supporting legs (9) fixed to the bottom surface of the reactor body (1), characterized in that: The surface of the reactor body (1) is sleeved with a temperature control sleeve (4), the bottom ends of the four support legs (9) are commonly fixedly connected to a bottom plate (10), the top surface of the bottom plate (10) is provided with a cooling component (2) capable of lowering the temperature of the reactor body (1), and the top surface of the bottom plate (10) is provided with a heating component (3) capable of raising the temperature of the reactor body (1).

2. A gas phase polypropylene reactor with controllable start-up temperature according to claim 1, characterized in that: The temperature raising component (3) comprises a steam pump (301), the bottom surface of the steam pump (301) is fixedly connected to the top surface of the bottom plate (10), the output end of the steam pump (301) is fixedly connected to an air supply pipe (302), and the other end of the air supply pipe (302) is fixedly connected to the surface of the temperature control sleeve (4) and communicates with the interior of the temperature control sleeve (4).

3. A gas phase polypropylene reactor with controllable start-up temperature according to claim 2, characterized in that: The temperature increasing component (3) further comprises a gas valve (303), and the gas valve (303) is arranged on the wall of the gas supply pipe (302).

4. A gas phase polypropylene reactor with controllable start-up temperature according to claim 1, characterized in that: The cooling component (2) comprises a refrigeration box (201), the bottom surface of the refrigeration box (201) is fixedly connected to the top surface of the bottom plate (10), a refrigeration fin (205) is provided inside the refrigeration box (201), the top surface of the refrigeration fin (205) is fixedly connected to a refrigeration end (204), and the bottom surface of the refrigeration fin (205) is provided with a heat dissipation end (207).

5. A gas phase polypropylene reactor with controllable start-up temperature according to claim 4, characterized in that: The cooling component (2) further comprises a conduction sheet (203), the bottom surface of the conduction sheet (203) being fixedly connected to the top surface of the refrigeration end (204), and the four sides of the surface of the conduction sheet (203) being respectively fixedly connected to the four sides of the inner wall of the refrigeration box (201).

6. A gas phase polypropylene reactor with controllable start-up temperature according to claim 5, characterized in that: The cooling component (2) further comprises a return pipe (202), one end of which is fixedly connected to one side of the surface of the refrigeration box (201) and communicates with the interior of the refrigeration box (201), and the other end of which is fixedly connected to the surface of the temperature control sleeve (4) and communicates with the interior of the temperature control sleeve (4).

7. A gas phase polypropylene reactor with controllable start-up temperature according to claim 6, characterized in that: The cooling component (2) further comprises a water pump (208), the bottom surface of the water pump (208) being fixedly connected to the top surface of the bottom plate (10), the input end of the water pump (208) being communicated with the interior of the refrigeration box (201), the output end of the water pump (208) being fixedly connected to a water supply pipe (206), one end of the water supply pipe (206) being fixedly connected to the surface of the temperature control sleeve (4) and being communicated with the interior of the temperature control sleeve (4).

8. A gas phase polypropylene reactor with controllable start-up temperature according to claim 1, characterized in that: A pressure relief pipe (7) is fixedly connected to the top surface of the temperature control sleeve (4), and a pressure relief valve (8) is provided on the pipe wall of the pressure relief pipe (7).

9. A gas phase polypropylene reactor with controllable start-up temperature according to claim 4, characterized in that: The top surface of the refrigeration box (201) is provided with a water inlet (13), the water inlet (13) is communicated with the interior of the refrigeration box (201), one side of the refrigeration box (201) is provided with a heat dissipation port (11), the inner wall of the heat dissipation port (11) is fixedly connected with a dustproof net (12).

10. A gas phase polypropylene reactor with controllable start-up temperature according to claim 1, characterized in that: A sealing cover (5) is provided on the top of the reactor body (1), a temperature monitor (6) is provided on the top surface of the sealing cover (5), and a detection end of the temperature monitor (6) extends to the interior of the reactor body (1).

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