CN215611406U - Polymerization plant dispersant preparation unit - Google Patents

Abstract

The utility model discloses a polymerization device dispersant preparation unit, which comprises a preparation tank and two storage tanks, wherein the bottom outlet of the preparation tank is respectively communicated with the inlets of the two storage tanks through a conveying pipe, and a conveying control valve is arranged on the conveying pipe; the outlets of the two storage tanks are respectively communicated with an inlet pipeline of the first feeding pump through a first discharging pipe, and the outlet of the first feeding pump is communicated with the polymerization kettle through a first feeding pipe. The advantages are that: two storage tanks which are arranged in parallel are arranged between the preparation tank and the first feeding pump, the two storage tanks can be used for storing dispersing agents with different proportions, the two dispersing agent storage tanks share one first feeding pump to feed materials to the polymerization kettle, and the equipment cost is low; and the double mass flow meters are used for replacing a weighing tank for metering, the dispersing agent from the storage tank can be directly added into the polymerization kettle through the mass flow meters, the metering through the weighing tank is not needed, the feeding process is simplified, the feeding time of the polymerization kettle is shortened, and the yield is ensured.

Description

Polymerization plant dispersant preparation unit

The technical field is as follows:

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

Background art:

in the production of PVC resin, a certain amount of water, defoamer and dispersant are added into a preparation tank, stirred and dissolved, and then the dissolved dispersant is sent into a storage tank for storage, and when the dispersant is added, the dispersant in the storage tank is weighed in a weighing tank and then added into a polymerization kettle. However, after the operation of a workshop, the dispersing agent sent out from the storage tank cannot be directly added into the polymerization kettle, a separate weighing process is needed, the process of a preparation system consisting of the preparation tank, the storage tank and the weighing tank is complicated, and the long-term operation time is accumulated, so that the yield of the polymerization kettle is influenced. In addition, when the storage tank feeds materials to the polymerization kettle, in order to prevent the inner wall of the preparation tank from scaling, a separate flushing pipeline and a sewage pipeline need to be arranged, the equipment cost is high, and the dispersant in the flushing water is discharged along with the sewage, so that the loss is caused.

The utility model has the following contents:

the utility model aims to provide a dispersant preparation unit of a polymerization device, which can shorten the feeding time of a polymerization kettle.

The utility model is implemented by the following technical scheme: the polymerization device dispersing agent 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 and a dispersing agent feeding port, the bottom outlets of the preparation tank are respectively communicated with the inlets of the two storage tanks through conveying pipes, and conveying control valves are mounted on the conveying pipes; outlets of the two storage tanks are respectively communicated with an inlet pipeline of a first feeding pump through a first discharging pipe, and a first discharging valve is mounted on the first discharging pipe; the outlet of the first feeding pump is communicated with the polymerization kettle through a first feeding pipe, a first feeding valve is installed on the first feeding pipe, and a mass flow meter is installed on the first feeding pipe on the outlet side of the first feeding valve.

Further, the preparation tank comprises a tank body, a heating jacket, a stirring device and a cooling coil, wherein the heating jacket is arranged on the side wall of the tank body, and a steam input pipe and a steam output pipe are communicated with the heating jacket; the inside of the tank body is provided with a cooling coil, the two ends of the cooling coil are communicated with a cooling input pipe and a cooling output pipe, and the middle part of the tank body is provided with the stirring device.

Further, a temperature sensor is installed on the side portion of the tank body, a steam regulating valve is installed on the steam input pipe, a flow controller is installed on the cooling input pipe, the temperature sensor is electrically connected with the input end of the controller, and the output end of the controller is respectively electrically connected with the steam regulating valve and the flow controller.

Furthermore, a flushing pipe is communicated with an inlet of the first charging pump, and a flushing control valve is installed on the flushing pipe; and flushing bypasses are respectively communicated between the first feeding pipe and the two storage tanks, and bypass control valves are installed on the flushing bypasses.

Furthermore, two mass flowmeters which are arranged in series are arranged on the first charging pipe on the outlet side of the first charging valve.

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

Furthermore, the inlets of the first feeding pump and the second feeding pump are both provided with filters.

The utility model has the advantages that: two storage tanks which are arranged in parallel are arranged between the preparation tank and the first feeding pump, the two storage tanks can be used for storing dispersing agents with different proportions, the two dispersing agent storage tanks share one first feeding pump to feed materials to the polymerization kettle, and the equipment cost is low; and the double mass flow meters are used for replacing a weighing tank for metering, the dispersing agent from the storage tank can be directly added into the polymerization kettle through the mass flow meters, the metering through the weighing tank is not needed, the feeding process is simplified, the feeding time of the polymerization kettle is shortened, and the yield is ensured. In the process of preparing the dispersing agent, 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 recycling of the dispersing agent is realized.

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 tank body 101, a heating jacket 102, a stirring device 103, a cooling coil 104, a steam input pipe 105, a steam output pipe 106, a cooling input pipe 107, a cooling output pipe 108, a storage tank 2, a water filling port 29, an antifoaming agent filling port 3, a dispersing agent filling port 4, a conveying pipe 5, a conveying control valve 6, a first discharging pipe 7, a first feeding pump 8, a first discharging valve 9, a first feeding pipe 10, a first feeding valve 11, a mass flow meter 12, a temperature sensor 13, a steam regulating valve 14, a flow controller 15, a controller 16, a flushing pipe 17, a flushing control valve 18, a flushing bypass 19, a bypass control valve 20, a second discharging pipe 21, a second feeding pump 22, a second discharging valve 23, a second feeding pipe 24, a second feeding valve 25, a sampling valve 26 and a filter 27.

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. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1, a dispersant preparation unit of a polymerization apparatus includes a preparation tank 1 and two storage tanks 2, wherein a water inlet 29, an antifoaming agent inlet 3 and a dispersant addition port 4 are connected to the top of the preparation tank 1, and a fixed amount of water, an antifoaming agent and a dispersant added from the water inlet 29, the antifoaming agent inlet 3 and the dispersant addition port 4 are mixed in the preparation tank 1 to dissolve the dispersant; the preparation tank 1 comprises a tank body 101, a heating jacket 102, a stirring device 103 and a cooling coil 104, wherein the stirring device 103 is arranged in the middle of the tank body 101, and the stirring device 103 is a structure formed by a known motor, a stirring shaft and stirring blades; the dissolution of the dispersing agent can be accelerated by stirring the material by the stirring device 103; a heating jacket 102 is arranged on the side wall of the tank body 101, a steam input pipe 105 and a steam output pipe 106 are communicated with the heating jacket 102, and the temperature in the tank body 101 is raised and the dissolution of the dispersing agent is accelerated by heat exchange between steam flowing in the heating jacket 102 and materials in the tank body 101; a cooling coil 104 is arranged in the tank body 101, two ends of the cooling coil 104 are communicated with a cooling input pipe 107 and a cooling output pipe 108, and the temperature in the tank body 101 can be prevented from being overhigh by heat exchange between cooling water in the cooling coil 104 and materials in the tank body 101; a temperature sensor 13 is arranged on the side part of the tank body 101, a steam regulating valve 14 is arranged on a steam input pipe 105, a flow controller 15 is arranged on a cooling input pipe 107, the temperature sensor 13 is electrically connected with the input end of a controller 16, and the output end of the controller 16 is respectively electrically connected with the steam regulating valve 14 and the flow controller 15; the temperature of the material inside the tank 101 can be detected by the temperature sensor 13, and the detected information is transmitted to the controller 16; when the material temperature is lower than a set lower limit value, controlling the steam regulating valve 14 to increase the opening degree, and accelerating the circulation of steam to increase the temperature; when the material temperature exceeds the set upper limit value, the flow value of the flow controller 15 is controlled to be increased, the circulation speed of the cooling water in the cooling coil 104 is accelerated, and the temperature in the tank body 101 is further reduced.

The bottom outlet of the preparation tank 1 is respectively communicated with the inlets of the two storage tanks 2 through a conveying pipe 5, and a conveying control valve 6 is arranged on the conveying pipe 5; outlets of the two storage tanks 2 are respectively communicated with an inlet pipeline of a first charging pump 8 through a first discharging pipe 7, and a first discharging valve 9 is arranged on the first discharging pipe 7; the outlet of the first feeding pump 8 is communicated with the polymerization kettle through a first feeding pipe 10, and a first feeding valve 11 is arranged on the first feeding pipe 10. The two storage tanks 2 are respectively arranged between the preparation tank 1 and the first feeding pump 8 in parallel through the conveying pipe 5 and the first discharging pipe 7, and materials in the preparation tank 1 can enter the corresponding storage tanks 2 by switching the corresponding conveying control valves 6 and the corresponding first feeding valves 11; two storage tanks 2 in this application can be used for the dispersant of different proportions of storage, and a first charge pump 8 of sharing, and the system is simple, and equipment cost is low. Install two mass flow meters 12 that establish ties on the first filling pipe 10 of first charging valve 11 outlet side and set up, can rectify each other through setting up two mass flow meters 12, guarantee that the addition of dispersant measures accurately, and the flow is simple, practices thrift polymerization charging time, guarantees the polymeric kettle output.

In addition, a sampling valve 26 is installed on the first discharging pipe 7 on the inlet side of the first discharging valve 9, and the dispersant discharged from the storage tank 2 can be sampled by opening the sampling valve 26, so that the sampling is convenient and quick. A flushing pipe 17 is communicated with the inlet of the first charging pump 8, and a flushing control valve 18 is arranged on the flushing pipe 17; a flushing bypass 19 is respectively communicated between the first feeding pipe 10 and the two storage tanks 2, and a bypass control valve 20 is arranged on the flushing bypass 19; when the storage tank 2 is flushed, the first feed valve 11 is closed, the flush control valve 18 and the bypass control valve 20 are opened, and the flush water supplied from the flush pipe 17 by the first feed pump 8 is pumped into the storage tank 2 through the flush bypass 19 and then supplied into the polymerizer through the first discharge pipe 7 and the first feed pipe 10. 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 dispersing agent in the washing water is recycled, and the utilization rate of the dispersing agent is improved.

Outlets of the two storage tanks 2 are respectively communicated with inlets of a second feeding pump 22 through a second discharging pipe 21, a second discharging valve 23 is arranged on the second discharging pipe 21, an outlet of the second feeding pump 22 is communicated with an initiator preparation tank through a second feeding pipe 24, and a second feeding valve 25 is arranged on the second feeding pipe 24; the second feeding pump 22 is started, the second feeding valve and any second discharging valve 23 are opened, the dispersing agent in the corresponding storage tank 2 can be fed into the initiator preparation tank, and part of the dispersing agent is added during initiator preparation, so that the dispersing effect on the initiator can be achieved, and the initiator dispersing efficiency is accelerated. Filters 27 are installed at the inlets of the first and second charge pumps 8 and 22 to filter the particles that are not dissolved.

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 (10)

1. The polymerization device dispersing agent 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 and a dispersing agent feeding port, outlets at the bottom of the preparation tank are respectively communicated with inlets of the two storage tanks through conveying pipes, and conveying control valves are arranged on the conveying pipes; outlets of the two storage tanks are respectively communicated with an inlet pipeline of a first feeding pump through a first discharging pipe, and a first discharging valve is mounted on the first discharging pipe; the outlet of the first feeding pump is communicated with the polymerization kettle through a first feeding pipe, a first feeding valve is arranged on the first feeding pipe, and a mass flow meter is arranged on the first feeding pipe on the outlet side of the first feeding valve; and two outlets of the storage tanks are communicated with an inlet of a second feeding pump through a second discharging pipe respectively, a second discharging valve is installed on the second discharging pipe, an outlet of the second feeding pump is communicated with an initiator preparation tank through a second feeding pipe, and the second feeding valve is installed on the second feeding pipe.

2. The polymerization device dispersant formulating unit according to claim 1, wherein said formulating tank comprises a tank body, a heating jacket, a stirring device and a cooling coil, said heating jacket is provided on the side wall of said tank body, and a steam input pipe and a steam output pipe are connected to said heating jacket; the inside of the tank body is provided with a cooling coil, the two ends of the cooling coil are communicated with a cooling input pipe and a cooling output pipe, and the middle part of the tank body is provided with the stirring device.

3. The polymerizer dispersant preparation unit according to claim 2, wherein a temperature sensor is installed at a side of the tank, a steam control valve is installed at the steam input pipe, a flow controller is installed at the cooling input pipe, the temperature sensor is electrically connected to an input terminal of a controller, and an output terminal of the controller is electrically connected to the steam control valve and the flow controller, respectively.

4. The dispersant formulating unit according to any one of claims 1 to 3, wherein a flushing pipe is connected to the inlet of said first charging pump, and a flushing control valve is mounted on said flushing pipe; and flushing bypasses are respectively communicated between the first feeding pipe and the two storage tanks, and bypass control valves are installed on the flushing bypasses.

5. The dispersant formulating unit according to any one of claims 1 to 3, wherein two of said mass flow meters are installed in series on said first feeding pipe on the outlet side of said first feeding valve.

6. The polymeric device dispersant formulating unit according to claim 4, wherein two of said mass flow meters are installed in series on said first feeding tube on the outlet side of said first feeding valve.

7. The polymeric device dispersant formulating unit according to claim 1, 2, 3 or 6, characterized in that a sampling valve is mounted on said first discharge pipe on the inlet side of said first discharge valve.

8. The polymeric device dispersant formulating unit according to claim 4, characterized in that a sampling valve is mounted on said first discharge pipe on the inlet side of said first discharge valve.

9. The polymeric device dispersant formulating unit according to claim 5, characterized in that a sampling valve is mounted on said first discharge pipe on the inlet side of said first discharge valve.

10. The polymeric device dispersant formulating unit according to claim 1, 2, 3, 6, 8 or 9, characterized in that a filter is installed at the inlet of each of said first and second feeding pumps.

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