CN215586429U - Polymerization apparatus initiator preparation unit - Google Patents

Abstract

The utility model discloses a polymerization device initiator preparation unit, which comprises a preparation tank and two storage tanks, wherein the bottom outlets of the preparation tank are respectively communicated with the inlets of the two storage tanks through delivery pipes, and delivery control valves are arranged on the delivery pipes; the outlets of the two storage tanks are respectively communicated with the inlet pipeline of the feed pump through the discharging pipe, and the outlet of the feed pump is communicated with the polymerization kettle through the feed pipe. The advantages are that: two storage tanks which are arranged in parallel are arranged between the preparation tank and the charging pump and can be mutually standby to realize the continuous preparation of the initiator; the initiator in the storage tank is added into the polymerization kettle through the mass flow meter, so that the metering is realized, an independent weighing flow is not required to be set, the feeding flow is simplified, the feeding time of the polymerization kettle is shortened, the polymerization times of the polymerization kettle is increased, and the yield of the polymerization kettle is improved. Meanwhile, the two storage tanks can be used for storing initiators with different proportions, so that the process adjustment range is more flexible, and the application range is wider.

Description

Polymerization apparatus initiator preparation unit

The technical field is as follows:

the utility model relates to the technical field of polymerization devices, in particular to a polymerization device initiator preparation unit.

Background art:

in the production of PVC resin, it is necessary to add dissolved initiator to the polymerization kettle, usually by adding a certain amount of water, defoamer, dispersant and initiator to a preparation tank, stirring and dissolving, then sending the dissolved initiator to a storage tank for storage, when adding, firstly putting the initiator in the storage tank into a weighing tank for weighing, and then sending the initiator in the weighing tank to the polymerization kettle through a feeding pump. However, after the operation of a workshop, the preparation system formed by the preparation tank and the single storage tank cannot realize continuous preparation, namely, the storage tank cannot realize simultaneous preparation and storage in the process of charging the polymerization kettle, the charging flow is too long, the charging time of the polymerization kettle is longer each time, the number of the charging kettles per day is reduced, the long-term operation time is accumulated, and the yield of the polymerization kettle is influenced. After each feeding, an independent flushing system is required to be equipped to flush the polymerization kettle in the polymerization process of the polymerization kettle, and the flushed sewage can only be discharged to a sewage treatment system, so that the waste of the initiator is caused.

The utility model has the following contents:

the utility model aims to provide a polymerization device initiator preparation unit capable of realizing continuous preparation.

The utility model is implemented by the following technical scheme: the polymerization device initiator preparation unit comprises a preparation tank and two storage tanks, wherein the top of the preparation tank is communicated with a water filling port, a defoaming agent filling port, an initiator feeding port and a dispersing agent pipe; outlets of the two storage tanks are respectively communicated with an inlet pipeline of the feeding pump through a discharging pipe, and a discharging valve is arranged on the discharging pipe; the outlet of the feed pump is communicated with the polymerization kettle through a feed pipe, a feed valve is arranged on the feed pipe, and a mass flow meter is arranged on the feed pipe on the outlet side of the feed valve.

Further, the storage tank comprises a tank body, a cooling jacket, a stirring device and a cooling coil, wherein the cooling jacket is arranged on the side wall of the tank body, the cooling coil is arranged in the tank body, and the stirring device is arranged in the middle of the tank body.

Furthermore, a flushing pipe is communicated with the discharging pipe at the inlet side of the discharging valve, and a flushing control valve is mounted on the flushing pipe; and a flushing bypass is communicated between the charging pipe and the corresponding storage tank, and a bypass control valve is installed on the flushing bypass.

Furthermore, the feed pipe on the outlet side of the feed valve is provided with two mass flowmeters which are arranged in series.

Further, a sampling valve is installed on the discharging pipe on the inlet side of the discharging valve.

Furthermore, a filter is arranged at the inlet of the charging pump.

The utility model has the advantages that: two storage tanks which are arranged in parallel are arranged between the preparation tank and the charging pump and can be mutually standby to realize the continuous preparation of the initiator; the initiator in the storage tank is added into the polymerization kettle through the mass flow meter, so that the metering is realized, an independent weighing flow is not required to be set, the feeding flow is simplified, the feeding time of the polymerization kettle is shortened, the polymerization times of the polymerization kettle is increased, and the yield of the polymerization kettle is improved. Meanwhile, the two storage tanks can be used for storing initiators with different proportions, so that the process adjustment range is more flexible, and the application range is wider. In the continuous production process, only the storage tank needs to be flushed by cleaning water, and the flushing water can be directly sent to the polymerization kettle, so that the initiator can be recycled.

Description of the drawings:

fig. 1 is a schematic view of the overall structure of the present invention.

The system comprises a preparation tank 1, a storage tank 2, a tank body 21, a cooling jacket 22, a stirring device 23, a cooling coil 24, a water filling port 3, an antifoaming agent filling port 4, an initiator feeding port 5, a conveying pipe 6, a conveying control valve 7, a discharging pipe 8, a feeding pump 9, a discharging valve 10, a feeding pipe 11, a feeding valve 12, a mass flow meter 13, a flushing pipe 14, a flushing control valve 15, a flushing bypass 16, a bypass control valve 17, a sampling valve 18, a filter 19 and a dispersing agent pipe 20.

The specific implementation mode is as follows:

in the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Moreover, the appearances of the terms "second," "third," and the like, in this specification are for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1, the initiator preparation unit of the polymerization apparatus comprises a preparation tank 1 and two storage tanks 2, wherein the top of the preparation tank 1 is communicated with a water filling port 3, a defoaming agent adding port 4, an initiator feeding port 5 and a dispersing agent pipe 20, water is firstly pumped into the preparation tank 1 from the water filling port 3, the initiator is slowly poured into the preparation tank from the initiator feeding port 5, then the dispersing agent is pumped into the preparation tank from the dispersing agent pipe 20, and the dispersing agent is added to promote the components in the initiator to be uniformly dispersed; finally, a small amount of defoaming agent is added from a defoaming agent adding port 4 to remove foams generated in the stirring process in the preparation process; after the preparation is finished, the initiator can be dispersed by stirring for 2 hours by using a stirring mechanism in the preparation tank 1. The storage tank 2 comprises a tank body 21, a cooling jacket 22, a stirring device 23 and a cooling coil 24, wherein the cooling jacket 22 is arranged on the side wall of the tank body 21, the cooling coil 24 is arranged in the tank body 21, and in the preparation process, the temperature in the storage tank 2 is reduced through the mutual matching of the cooling jacket 22 and the cooling coil 24, so that the temperature of the initiator is reduced, and the decomposition and explosion caused by overhigh temperature of the initiator can be avoided. A stirring device 23 is arranged in the middle of the tank body 21; as is known, the stirring device 23 includes a motor, a stirring shaft and a stirring blade, and the stirring device 23 is used to stir and mix the materials to accelerate the dissolution.

The bottom outlet of the preparation tank 1 is respectively communicated with the inlets of the two storage tanks 2 through a delivery pipe 6, and a delivery control valve 7 is arranged on the delivery pipe 6; outlets of the two storage tanks 2 are respectively communicated with an inlet pipeline of a feeding pump 9 through a discharging pipe 8, and a discharging valve 10 is arranged on the discharging pipe 8; a filter 19 is installed at the inlet of the feed pump 9 to filter particles that are not dissolved. A sampling valve 18 is arranged on the discharging pipe 8 on the inlet side of the discharging valve 10, and the dispersant discharged from the storage tank 2 can be sampled by opening the sampling valve 18, so that the sampling is convenient and quick. The outlet of the feed pump 9 is communicated with the polymerization kettle through a feed pipe 11, a feed valve 12 is arranged on the feed pipe 11, and the materials in the preparation tank 1 can enter the corresponding storage tank 2 by switching the corresponding delivery control valve 7 and the feed valve 12. The two storage tanks 2 can be mutually spare, when one storage tank 2 feeds materials into the polymerization kettle, the other storage tank 2 can receive the initiator sent by the preparation tank 1, so that the continuous preparation of the initiator is realized, the feeding time of the polymerization kettle is further shortened, and the yield of the polymerization kettle is ensured; meanwhile, initiators with different proportions can be switched and added on line, and the blending range is wider. Two mass flowmeters 13 which are arranged in series are arranged on the feeding pipe 11 on the outlet side of the feeding valve 12, the two mass flowmeters 13 can be mutually corrected, the accurate metering of the addition amount of the initiator is ensured, the flow is simple, and the polymerization feeding time is saved.

A flushing pipe 14 is communicated with the discharging pipe 8 at the inlet side of the discharging valve 10, and a flushing control valve 15 is arranged on the flushing pipe 14; a flushing bypass 16 is communicated between the charging pipe 11 and the corresponding reservoir 2, and a bypass control valve 17 is mounted on the flushing bypass 16. When the storage tank 2 is flushed, the feed valve 12 is closed, the flush control valve 15 and the bypass control valve 17 are opened, and the flush water supplied from the flush pipe 14 by the feed pump 9 is fed into the storage tank 2 through the flush bypass 16 and then fed into the polymerizer through the discharge pipe 8 and the feed pipe 11. Under the condition that the preparation tank 1 can be continuously used, only the washing water is needed to wash the storage tank 2, and the washing water generated by washing can enter the polymerization kettle, so that the initiator in the washing water can be recycled, and the utilization rate of the dispersing agent is improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (8)

1. The polymerization device initiator preparation unit is characterized by comprising a preparation tank and two storage tanks, wherein the top of the preparation tank is communicated with a water filling port, a defoaming agent filling port, an initiator feeding port and a dispersing agent pipe; outlets of the two storage tanks are respectively communicated with an inlet pipeline of the feeding pump through a discharging pipe, and a discharging valve is arranged on the discharging pipe; the outlet of the feed pump is communicated with the polymerization kettle through a feed pipe, a feed valve is arranged on the feed pipe, and a mass flow meter is arranged on the feed pipe on the outlet side of the feed valve.

2. The polymerization apparatus initiator formulation unit according to claim 1, wherein the storage tank comprises a tank body, a cooling jacket, a stirring apparatus, and a cooling coil, the cooling jacket is provided on a side wall of the tank body, the cooling coil is provided inside the tank body, and the stirring apparatus is installed in the middle of the tank body.

3. The polymerization device initiator formulation unit according to claim 1 or 2, wherein a flushing pipe is connected to the discharge pipe on the inlet side of the discharge valve, and a flushing control valve is installed on the flushing pipe; and a flushing bypass is communicated between the charging pipe and the corresponding storage tank, and a bypass control valve is installed on the flushing bypass.

4. The polymerization initiator formulation unit according to claim 1 or 2, wherein two of said mass flow meters are installed in series on said feed pipe on the outlet side of said feed valve.

5. The polymerization device initiator formulation unit according to claim 3, wherein two of said mass flow meters are installed in series on said feed pipe on the outlet side of said feed valve.

6. The polymerization plant initiator formulation unit of claim 1, 2 or 5, wherein a sampling valve is mounted on the discharge pipe on the inlet side of the discharge valve.

7. The polymerization plant initiator formulation unit of claim 4, wherein a sampling valve is mounted on the discharge pipe on the inlet side of the discharge valve.

8. The polymerization plant initiator formulation unit of claim 1, 2, 5 or 7, wherein a filter is installed at the inlet of the feed pump.

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