CN219129232U

CN219129232U - Polypropylene continuous polymerization reaction kettle with temperature control function

Info

Publication number: CN219129232U
Application number: CN202223570313.XU
Authority: CN
Inventors: 屠金东; 陈国庆; 于海波; 王永田
Original assignee: Kebang Petrochemical Lianyungang Co ltd
Current assignee: Kebang Petrochemical Lianyungang Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-06
Anticipated expiration: 2032-12-30

Abstract

The utility model provides a polypropylene continuous polymerization reaction kettle with a temperature control function, which belongs to the field of reaction kettles and comprises the following components: a reaction kettle; a heating pipe is arranged in the jacket, and a first connecting pipe and a second connecting pipe are respectively arranged at two ends of the heating pipe; the heating assembly comprises a heating box, an electric heating wire is installed in the heating box, the heating box is connected with a second connecting pipe through a third connecting pipe, a water pump is installed on the heating box, the liquid outlet end of the water pump is connected with a first connecting pipe, the liquid inlet end of the water pump is communicated with the heating box through a liquid inlet pipe, and a cooling mechanism is installed between the heating pipe and the reaction kettle. The utility model reduces the temperature of the hot oil by means of cold water heat exchange, further reduces the temperature in the reaction kettle, simultaneously does not waste the heat of the hot oil, reduces other power consumption, saves resources and can be used for life or industry by heat exchange of the hot water.

Description

Polypropylene continuous polymerization reaction kettle with temperature control function

Technical Field

The utility model relates to the technical field of reaction kettles, in particular to a polypropylene continuous polymerization reaction kettle with a temperature control function.

Background

The continuous polymerization treatment of polypropylene is carried out in a reaction kettle, and a corresponding heating structure is needed in the reaction kettle.

At present, a jacket is wrapped outside a reaction kettle, heating of the inside of the reaction kettle is achieved by conveying hot oil (oil heat conduction) in the jacket, but the temperature in the reaction kettle is not kept in a certain range continuously, the temperature is sometimes lowered in the continuous polymerization process of polypropylene, and the oil in an oil tank is cooled in a hot oil way, so that a large amount of oil heat is consumed, heat resources are wasted and other power consumption is increased.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model provides a polypropylene continuous polymerization reaction kettle with a temperature control function.

The embodiment of the utility model provides a polypropylene continuous polymerization reaction kettle with a temperature control function, which comprises the following components:

a reaction kettle;

a heating pipe is arranged in the jacket, and a first connecting pipe and a second connecting pipe are respectively arranged at two ends of the heating pipe;

the heating assembly comprises a heating box, an electric heating wire is installed in the heating box, the heating box is connected with a second connecting pipe through a third connecting pipe, a water pump is installed on the heating box, the liquid outlet end of the water pump is connected with a first connecting pipe, the liquid inlet end of the water pump is communicated with the heating box through a liquid inlet pipe, and a cooling mechanism is installed between the heating box and the reaction kettle.

Further, the heating pipe is arranged in the jacket in a spiral mode.

Further, the third connection pipe is provided with a first electromagnetic valve.

Further, the cooling mechanism comprises a heat exchange box, a spiral pipe is arranged in the heat exchange box, the second connecting pipe is communicated with the spiral pipe, and the upper end of the spiral pipe is communicated with the heating box through a fourth connecting pipe.

Further, a second electromagnetic valve is installed on the second connecting pipe.

Further, a drain pipe is arranged on the heat exchange box, and a valve is arranged on the drain pipe.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model reduces the temperature of the hot oil by means of cold water heat exchange, further reduces the temperature in the reaction kettle, simultaneously does not waste the heat of the hot oil, reduces other power consumption, saves resources and can be used for life or industry by heat exchange of the hot water.

Drawings

Fig. 1 is a schematic structural diagram of a polypropylene continuous polymerization reactor with a temperature control function according to an embodiment of the present utility model.

FIG. 2 is a schematic view of a spiral tube in a polypropylene continuous polymerization reactor with temperature control function according to an embodiment of the present utility model.

In the above figures: 1 reaction kettle, 2 jacket, 3 heating pipe, 4 heating box, 5 heating wire, 6 water pump, 7 first connecting pipe, 8 feed liquor pipe, 9 heat exchange box, 10 second connecting pipe, 11 second solenoid valve, 12 third connecting pipe, 13 first solenoid valve, 14 fourth connecting pipe, 15 drain pipe, 16 spiral pipe.

Detailed Description

The technical scheme of the utility model is further described below with reference to the accompanying drawings and examples.

As shown in fig. 1-2, the embodiment of the utility model provides a polypropylene continuous polymerization reaction kettle with a temperature control function, which comprises:

the reaction kettle 1 is provided with a stirrer for mixing;

a jacket 2, wherein a heating pipe 3 is arranged in the jacket 2, and a first connecting pipe 7 and a second connecting pipe 10 are respectively arranged at two ends of the heating pipe 3; wherein the heating pipe 3 is spirally arranged in the jacket 2;

the heating assembly comprises a heating box 4, an electric heating wire 5 is arranged in the heating box 4, the heating box 4 is connected with a second connecting pipe 10 through a third connecting pipe 12, and a first electromagnetic valve 13 is arranged on the third connecting pipe 12;

the heating box 4 is provided with a water pump 6, the liquid outlet end of the water pump 6 is connected with a first connecting pipe 7, the liquid inlet end of the water pump 6 is communicated with the heating box 4 through a liquid inlet pipe 8, a cooling mechanism is arranged between the heating box 4 and the reaction kettle 1 and comprises a heat exchange box 9, a drain pipe 15 is arranged on the heat exchange box 9, and a valve is arranged on the drain pipe 15; a spiral pipe 16 is arranged in the heat exchange box 9, a second connecting pipe 10 is communicated with the spiral pipe 16, a second electromagnetic valve 11 is arranged on the second connecting pipe 10, and the upper end of the spiral pipe 16 is communicated with the heating box 4 through a fourth connecting pipe 14.

The detailed working process of the utility model is as follows:

1. when polypropylene is continuously polymerized in the reaction kettle 1, the heating wire 5 is used for heating the oil in the heating box 4, a temperature sensor can be arranged on the heating box 4 so as to know the oil temperature in the heating box 4, the water pump 6 works to convey the heated oil into the heating pipe 3 in the jacket 2 through the first connecting pipe 7, finally, the oil flows into the heating box 4 through the second connecting pipe 10 and the third connecting pipe 12, and the interior of the reaction kettle 1 can be heated through the hot oil in the heating pipe 3;

2. of the above, the first solenoid valve 13 is in an open state, and the second solenoid valve 11 is in a closed state;

3. if the temperature in the reaction kettle 1 needs to be reduced, namely, the oil temperature is reduced, the heating wire 5 is closed, the first electromagnetic valve 13 is closed, the second electromagnetic valve 11 is opened, cold water exists in the heat exchange box 9 at the moment, so that the cold water flows into the spiral pipe 16 in the heat exchange box 9 through the second connecting pipe 10 when the hot oil is conveyed, finally flows into the water tank 4 through the fourth connecting pipe 14, the cold water in the heat exchange box 9 can exchange heat and cool the hot oil in the spiral pipe 16, the oil temperature in the heating box 4 can be reduced, the oil temperature in the heating pipe 3 can be reduced, and the oil temperature in the reaction kettle 1 can be reduced;

4. the utility model reduces the temperature of the hot oil by means of cold water heat exchange, further reduces the temperature in the reaction kettle 1, simultaneously does not waste the heat of the hot oil, reduces other power consumption, saves resources and can be used for life or industry by heat exchange of the hot water.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims

1. A polypropylene continuous polymerization reaction kettle with a temperature control function is characterized by comprising:

a reaction kettle (1);

the heating device comprises a jacket (2), wherein a heating pipe (3) is arranged in the jacket (2), and a first connecting pipe (7) and a second connecting pipe (10) are respectively arranged at two ends of the heating pipe (3);

heating element, heating element includes heating cabinet (4), install heating wire (5) in heating cabinet (4), heating cabinet (4) are connected with second connecting pipe (10) through third connecting pipe (12), install water pump (6) on heating cabinet (4), the liquid outlet end of water pump (6) is connected with first connecting pipe (7), the feed liquor end of water pump (6) is linked together with heating cabinet (4) through feed liquor pipe (8), install cooling mechanism between heating cabinet (4) and reation kettle (1), cooling mechanism includes heat exchange box (9), install spiral pipe (16) in heat exchange box (9), second connecting pipe (10) are linked together with spiral pipe (16), the upper end of spiral pipe (16) is linked together with heating cabinet (4) through fourth connecting pipe (14).

2. The continuous polymerization reactor for polypropylene with temperature control function according to claim 1, wherein:

the heating pipe (3) is spirally arranged in the jacket (2).

3. The continuous polymerization reactor for polypropylene with temperature control function according to claim 1, wherein:

the third connecting pipe (12) is provided with a first electromagnetic valve (13).

4. The continuous polymerization reactor for polypropylene with temperature control function according to claim 1, wherein:

a second electromagnetic valve (11) is arranged on the second connecting pipe (10).

5. The continuous polymerization reactor for polypropylene with temperature control function according to claim 1, wherein:

a drain pipe (15) is arranged on the heat exchange box (9), and a valve is arranged on the drain pipe (15).