Intermediate transfer stable conveying system

Abstract

The utility model discloses an intermediate transfer stable conveying system. The intermediate transfer stable conveying system comprises a first reactor, a second reactor, a transfer filter, a transfer device and a purging gas source, the output end of the first reactor is in pipeline connection with the raw material input end of the transfer filter, the gas input end of the transfer filter is connected with an inert gas pipeline, the output end of the transfer filter is in pipeline connection with the input end of the transfer device, and the output end of the transfer device is connected with the input end of the second reactor through a first conveying pipeline; the output end of the purging gas source is connected with a bottom gas inlet of the transfer device through a first purging gas pipeline, and the output end of the purging gas source is connected with the first conveying pipeline through a second purging gas pipeline; a middle inlet of the second reactor is respectively connected with an electron donor feeding pipeline and a propylene feeding pipeline; a pneumatic conveying pipeline is connected between the inert gas pipeline and the second purging gas pipeline; and a second conveying pipeline is connected between the electron donor feeding pipeline and the pneumatic conveying pipeline.

Description

Technical Field

[0001] This utility model relates to the field of polypropylene production, specifically to an intermediate transfer and stable conveying system. Background Technology

[0002] In the Unipol polypropylene process for producing impact-resistant products, the intermediate transfer system (IRTS) serves as a bridge between the first and second reactors. The stable operation of the intermediate transfer system is crucial for the start-up and stable operation of the second reactor. During production, the pipeline between the transferor and the second reactor is close to the polymerization reaction conditions, which can lead to blockages in the pipeline. This can cause the intermediate transfer system to malfunction, severely affecting the stable production of impact-resistant products. Utility Model Content

[0003] The purpose of this invention is to provide a stable intermediate transfer and conveying system.

[0004] This utility model is implemented by the following technical solution: it includes a first reactor, a second reactor, a transfer filter, a transferor, a purge gas source, and an electron feeder pipeline;

[0005] The output end of the first reactor is connected to the raw material input pipeline of the transfer filter, the gas input end of the transfer filter is connected to an inert gas pipeline, the output end of the transfer filter is connected to the input pipeline of the transferor, and the output end of the transferor is connected to the input end of the second reactor through a first conveying pipeline;

[0006] The output end of the purge gas source is connected to the bottom gas inlet of the transferor through a first purge gas pipeline, and the output end of the purge gas source is connected to the first conveying pipeline through a second purge gas pipeline; the middle inlet of the second reactor is connected to an electron donor feed pipeline and a propylene feed pipeline respectively; a pneumatic conveying pipeline is connected between the inert gas pipeline and the second purge gas pipeline; a second conveying pipeline is connected between the electron donor feed pipeline and the pneumatic conveying pipeline.

[0007] Furthermore, the inert gas pipeline is connected to a light component buffer tank at its inlet end.

[0008] Furthermore, the second delivery pipeline is sequentially equipped with a check valve, a flow meter, and a first regulating valve along the delivery direction of the electron.

[0009] Furthermore, the pneumatic conveying pipeline is equipped with a second regulating valve in sequence along the conveying direction of the inert gas.

[0010] The advantages of this utility model are as follows: A portion of the inert gas in the inert gas conveying pipeline is diverted to the pneumatic conveying pipeline. The flow rate of the inert gas is adjusted by the second regulating valve. Under the action of the second conveying pipeline, the check valve and the flow meter, the conveying flow rate of the electron feeder is adjusted and the electron feeder is sent to the pneumatic conveying pipeline. The inert gas serves as the conveying carrier for the electron feeder, which is then sent to the first conveying pipeline with the purging gas. The use of the electron feeder solves the current problem of material blockage in the first conveying pipeline.

[0011] The pneumatic conveying pipeline ensures the dispersion of the electron donor entering the second purging gas pipeline, making the mixing of the electron donor and materials in the first conveying pipeline more uniform. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a process flow diagram for a utility model.

[0014] In the diagram: 1. First reactor; 2. Transfer filter; 3. Inert gas pipeline; 4. Transfer unit; 5. First conveying pipeline; 6. Second reactor; 7. Purge gas source; 8. First purge gas pipeline; 9. Second purge gas pipeline; 10. Electron feeder pipeline; 11. Propylene feeder pipeline; 12. Pneumatic conveying pipeline; 13. Second conveying pipeline; 14. Light component buffer tank; 15. Check valve; 16. Flow meter; 17. First regulating valve; 18. Second regulating valve. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figure 1 As shown, the intermediate transfer and stable conveying system includes a first reactor 1, a second reactor 6, a transfer filter 2, a transferor 4, a purge gas source 7, and a feeder pipeline 10.

[0017] The output end of the first reactor 1 is connected to the raw material input pipeline of the transfer filter 2. The gas input end of the transfer filter 2 is connected to the inert gas pipeline 3. The output end of the transfer filter 2 is connected to the input pipeline of the transfer device 4. The output end of the transfer device 4 is connected to the input end of the second reactor 6 through the first conveying pipeline 5.

[0018] The output end of the purge gas source 7 is connected to the bottom gas inlet of the transferor 4 through the first purge gas pipeline 8, and the output end of the purge gas source 7 is connected to the first conveying pipeline 5 through the second purge gas pipeline 9. Under the action of the purge gas source 7 and the first purge gas pipeline 8, the smooth flow of materials inside the transferor 4 is ensured. At the same time, under the action of the second purge pipeline 9, the materials inside the first conveying pipeline 5 are purged, ensuring the smooth flow of materials inside. In addition, electron donors are added to the purge gas, which further reduces the blockage and scaling of pipelines during material conveying.

[0019] The middle inlet of the second reactor 6 is connected to an electron feeder line 10 and a propylene feeder line 11, respectively; an inert gas line 3 and a second purge gas line 9 are connected by a pneumatic conveying line 12; and a second conveying line 13 is connected between the electron feeder line 10 and the pneumatic conveying line 12. Under the action of the pneumatic conveying line 12, the dispersion effect of the electron feeder entering the second purge gas line 9 is ensured, making the mixing of the electron feeder and the material in the first conveying line 5 more uniform.

[0020] The inlet end of the inert gas pipeline 3 is connected to a light component buffer tank 14.

[0021] The second delivery pipeline 13 is equipped with a check valve 15, a flow meter 16, and a first regulating valve 17 in sequence along the delivery direction of the electron feeder.

[0022] The pneumatic conveying pipeline 12 is equipped with a second regulating valve 18 in sequence along the conveying direction of the inert gas.

[0023] The specific operation process of this embodiment is as follows:

[0024] The material produced by the reaction in the first reactor 1 is filtered by the transfer filter 2 and then fed to the transferor 4 by gravity. It is then sent to the second reactor 6 through the transferor 4.

[0025] The inert gas in inert gas pipeline 3 is the process recovery gas of the plant area. The process recovery gas contains inert gas and has a certain conveying pressure. Therefore, a portion of the inert gas in the inert gas conveying pipeline is sent to the pneumatic conveying pipeline 12. The flow rate of the inert gas is adjusted by the second regulating valve 18. Under the action of the second conveying pipeline 13, check valve 15 and flow meter 16, the conveying flow rate of the feeder is adjusted and the feeder is sent to the pneumatic conveying pipeline 12. The inert gas serves as the conveying carrier for the feeder and sends the feeder to the first conveying pipeline 5 with the purging gas. The feeder solves the current problem of material blockage in the first conveying pipeline 5.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An intermediate transfer and stable conveying system, characterized in that, It includes a first reactor, a second reactor, a transfer filter, a transferor, a purge gas source, and an electron feed line; The output end of the first reactor is connected to the raw material input pipeline of the transfer filter, the gas input end of the transfer filter is connected to an inert gas pipeline, the output end of the transfer filter is connected to the input pipeline of the transferor, and the output end of the transferor is connected to the input end of the second reactor through a first conveying pipeline; The output end of the purge gas source is connected to the bottom gas inlet of the transferor through a first purge gas pipeline, and the output end of the purge gas source is connected to the first conveying pipeline through a second purge gas pipeline; the middle inlet of the second reactor is connected to an electron donor feed pipeline and a propylene feed pipeline respectively; a pneumatic conveying pipeline is connected between the inert gas pipeline and the second purge gas pipeline; a second conveying pipeline is connected between the electron donor feed pipeline and the pneumatic conveying pipeline.

2. The intermediate transfer and stable conveying system according to claim 1, characterized in that, The inert gas pipeline is connected to a light component buffer tank at its inlet end.

3. The intermediate transfer and stable conveying system according to claim 2, characterized in that, The second delivery pipeline is equipped with a check valve, a flow meter, and a first regulating valve in sequence along the delivery direction of the electron.

4. The intermediate transfer and stable conveying system according to claim 3, characterized in that, The pneumatic conveying pipeline is equipped with a second regulating valve in sequence along the direction of inert gas delivery.

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