Pentachloropyridine liquid loading system

Abstract

The utility model provides a pentachloropyridine liquid loading system which comprises a first filter, a second filter, an intermediate tank and a loading pipeline connected with an outlet of the second filter, and a first pipeline and a second pipeline which are communicated with each other are further arranged between an outlet of the first filter and an inlet of the second filter. A third pipeline is arranged between the outlet of the first filter and the inlet of the intermediate tank; the feeding pipeline is respectively connected with the inlet of the intermediate tank and the inlet of the first filter; a fourth pipeline is also connected between the outlet of the intermediate tank and the inlet of the first filter; and a fifth pipeline is also arranged between the outlet of the intermediate tank and the inlet of the second filter. According to the utility model, the problem of leakage risk of liquid pentachloropyridine in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pentachloropyridine on-board systems, in particular to a pentachloropyridine liquid on-board system. Background Art

[0002] In the prior art, pentachloropyridine is liquid after production, and then becomes solid at room temperature. When leaving the factory, it is generally packaged as a solid slice product, and then transported. However, in the process of slicing and packaging, more dust and irritating gas will be produced, which is unfriendly to the environment and the health of operators. Therefore, it is a better choice to load pentachloropyridine in liquid state (special chemical product transport tanker) for transportation. Specifically, the liquid pentachloropyridine produced is transported in a transport tanker by pipeline, but in the actual vehicle process (i.e., in the process of loading liquid pentachloropyridine into a tanker), the material (liquid pentachloropyridine) produced is in a continuous supply, and there is a disconnection phenomenon when getting on the vehicle in the latter step, so the risk of partial liquid pentachloropyridine leakage may be caused. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a pentachloropyridine liquid on-board system, which solves the problem of the risk of liquid pentachloropyridine leakage in the prior art.

[0004] According to an embodiment of the utility model, a pentachloropyridine liquid loading system comprises a first filter, a second filter and an intermediate tank, and a loading pipe connected to the outlet of the second filter, a first pipe and a second pipe connected to each other are arranged between the outlet of the first filter and the inlet of the second filter, and a third pipe is arranged between the outlet of the first filter and the inlet of the intermediate tank;

[0005] It also includes a feed pipeline connected to the inlet of the intermediate tank and the inlet of the first filter respectively, and a fourth pipeline is connected between the outlet of the intermediate tank and the inlet of the first filter;

[0006] A fifth pipeline is further arranged between the outlet of the intermediate tank and the inlet of the second filter.

[0007] In the above embodiment, valves are provided on each pipeline to control their on and off. When loading, the material (i.e., liquid pentachloropyridine) enters the first filter through the feed pipeline, enters the second filter after passing through the first pipeline and the second pipeline, and then is loaded onto the vehicle through the loading pipeline. When loading is not required, the material can directly enter the intermediate tank through the feed pipeline, and the material of the first filter can also enter the intermediate pipe through the third pipeline, thereby avoiding the risk of leakage of the material through the loading pipeline, and solving the problem of liquid pentachloropyridine leakage in the prior art.

[0008] Furthermore, a first intermediate pump and a second intermediate pump are connected in parallel between the feed pipeline and the inlet of the first filter.

[0009] The fourth pipeline is communicated with the first filter after passing through the first intermediate pump and the second intermediate pump respectively.

[0010] Furthermore, a sixth pipeline is connected between the first intermediate pump and the second intermediate pump and the inlet of the first filter, and the first intermediate pump and the second intermediate pump are also connected to the fifth pipeline.

[0011] Furthermore, it also includes steam pipes, which are respectively installed around the first pipe, the second pipe, the third pipe, the fifth pipe and the sixth pipe.

[0012] Furthermore, a nitrogen purge tube is also included.

[0013] Furthermore, a bag dust collector is also included.

[0014] Furthermore, an interlayer is provided in the intermediate tank, and the interlayer is respectively connected with a heat transfer oil inlet pipe and a heat transfer oil outlet pipe.

[0015] Furthermore, the intermediate tank is also connected to a first tail gas outlet pipe.

[0016] Furthermore, it also includes a flow meter, the first intermediate pump and the second intermediate pump are respectively connected to the inlet of the flow meter, and the fifth pipeline and the sixth pipeline are respectively connected to the outlet of the flow meter.

[0017] Furthermore, the bag filter is also connected to a second exhaust gas outlet pipe.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The intermediate tank plays a role of material buffering, preventing the material from flowing into the pipeline when it is not on the vehicle, and solving the problem of liquid pentachloropyridine leakage risk in the prior art;

[0020] The material entering the intermediate tank can also be reloaded via the fourth pipeline. At the same time, the material can also directly enter the second filter via the fifth pipeline, making it convenient for the system to inspect the first filter without stopping the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0022] In the above drawings:

[0023] The first filter 1, the second filter 2, the intermediate tank 3, the vehicle pipeline 4, the first pipeline 5, the second pipeline 6, the third pipeline 7, the feed pipeline 8, the fourth pipeline 9, the fifth pipeline 10, the first intermediate pump 11, the second intermediate pump 12, the sixth pipeline 13, the steam pipeline 14, the nitrogen purge pipe 15, the bag filter 16, the heat transfer oil inlet pipe 17, the heat transfer oil outlet pipe 18, the first exhaust gas outlet pipe 19, the flow meter 20, the second exhaust gas outlet pipe 21, the interlayer 22, and the transport tank truck 23. DETAILED DESCRIPTION

[0024] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In an exemplary embodiment, Figure 1 As shown, this embodiment provides a pentachloropyridine liquid loading system.

[0027] It comprises a first filter 1, a second filter 2 and an intermediate tank 3, and an onboard pipe 4 connected to the outlet of the second filter 2, a first pipe 5 and a second pipe 6 are arranged between the outlet of the first filter 1 and the inlet of the second filter 2, and a third pipe 7 is arranged between the outlet of the first filter 1 and the inlet of the intermediate tank 3;

[0028] It also includes a feed pipe 8 connected to the inlet of the intermediate tank 3 and the inlet of the first filter 1 respectively, and a fourth pipe 9 is connected between the outlet of the intermediate tank 3 and the inlet of the first filter 1;

[0029] A fifth pipe 10 is further provided between the outlet of the intermediate tank 3 and the inlet of the second filter 2 .

[0030] In the above embodiment, valves are provided on each pipeline to control their on and off. When loading, the material (i.e., liquid pentachloropyridine) enters the first filter 1 through the feed pipeline 8, enters the second filter 2 after passing through the first pipeline 5 and the second pipeline 6, and then is loaded through the loading pipeline 4. When loading is not required, the material can directly enter the intermediate tank 3 through the feed pipeline 8, and the material of the first filter 1 can also enter the intermediate pipe through the third pipeline 7, thereby avoiding the risk of leakage of the material through the loading pipeline 4, solving the problem of the risk of leakage of liquid pentachloropyridine in the prior art; the material entering the intermediate tank 3 can also pass through the fourth pipeline 9 again through the first filter 1 and the second filter 2 to realize re-loading. At the same time, the material can also directly enter the second filter 2 through the fifth pipeline 10, which is convenient for the system to inspect the first filter 1 without stopping.

[0031] In a further exemplary scheme, a first intermediate pump 11 and a second intermediate pump 12 are connected in parallel between the feed pipeline 8 and the inlet of the first filter 1. The dual pump arrangement enables convenient maintenance of one of the pumps, thereby achieving the purpose of non-stop maintenance. Furthermore, the fourth pipeline 9 is connected to the first filter 1 after passing through the first intermediate pump 11 and the second intermediate pump 12 respectively, so that the material in the intermediate tank 3 can also be loaded onto the vehicle through the power provided by the dual pumps.

[0032] In a more detailed exemplary scheme, a sixth pipeline 13 is also connected between the first intermediate pump 11 and the second intermediate pump 12 and the inlet of the first filter 1, and the first intermediate pump 11 and the second intermediate pump 12 are also connected to the fifth pipeline 10. The sixth pipeline 13 serves to connect the dual pumps and the first filter 1, so that the material can smoothly enter the first filter 1. At the same time, the material passing through the dual pumps can also enter the fifth pipeline 10 and directly enter the second filter 2.

[0033] In a further exemplary embodiment, the system further includes a steam pipe 14, which is respectively installed around the first pipe 5, the second pipe 6, the third pipe 7, the fifth pipe 10 and the sixth pipe 13. High-temperature steam can be introduced into the steam pipe 14 to heat the materials in each pipe, thereby ensuring that the materials in each pipe are always in a liquid state and flow smoothly.

[0034] In a further exemplary embodiment, an interlayer 22 is further provided in the intermediate tank 3, and the interlayer 22 is further connected to a heat transfer oil inlet pipe 17 and a heat transfer oil outlet pipe 18. The high-temperature heat transfer oil is introduced into the interlayer 22 through the heat transfer oil inlet pipe 17, and then discharged through the heat transfer oil outlet pipe 18, and a heating component, a circulating pump component, etc. are provided outside so that the heat transfer oil is in a circulating state, so that the material in the intermediate tank 3 can be kept warm and the material is in a liquid state; in more detail, the intermediate tank 3 is also connected to a first tail gas outlet pipe 19, and when the pressure in the intermediate tank 3 is relatively high, the pressure can be relieved through the first tail gas pipe, and at the same time, the gas can be collected and discharged after being harmlessly treated again.

[0035] In a further exemplary scheme, a flow meter 20 is also included, and the first intermediate pump 11 and the second intermediate pump 12 are respectively connected to the inlet of the flow meter 20, and the fifth pipeline 10 and the sixth pipeline 13 are respectively connected to the outlet of the flow meter 20, so that the material flow entering the second filter 2 can be conveniently controlled, thereby facilitating subsequent on-board operations.

[0036] In a further exemplary embodiment, the system further includes a nitrogen purge pipe 15 and a bag filter 16. The nitrogen purge pipe 15 can be used to purge the tail gas generated at the transport tank truck 23, and then the bag filter 16 is used to recover the dust generated by the sublimation of pentachloropyridine, which can reduce product waste and environmental pollution. The bag filter 16 is also connected to a second tail gas outlet pipe 21 for collecting the tail gas passing through the bag filter 16 and discharging it after a second harmless treatment.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A pentachloropyridine liquid loading system, It is characterized in that It includes a first filter, a second filter and an intermediate tank, and an onboard pipe connected to the outlet of the second filter, a first pipe and a second pipe that are interconnected are arranged between the outlet of the first filter and the inlet of the second filter, and a third pipe is arranged between the outlet of the first filter and the inlet of the intermediate tank; It also includes a feed pipeline connected to the inlet of the intermediate tank and the inlet of the first filter respectively, and a fourth pipeline is connected between the outlet of the intermediate tank and the inlet of the first filter; A fifth pipeline is further arranged between the outlet of the intermediate tank and the inlet of the second filter.

2. The pentachloropyridine liquid on-board system as claimed in claim 1, It is characterized in that A first intermediate pump and a second intermediate pump are connected in parallel between the feed pipeline and the inlet of the first filter. The fourth pipeline is communicated with the first filter after passing through the first intermediate pump and the second intermediate pump respectively.

3. The pentachloropyridine liquid on-board system as claimed in claim 2, It is characterized in that A sixth pipeline is further connected between the first intermediate pump and the second intermediate pump and the inlet of the first filter, and the first intermediate pump and the second intermediate pump are further connected to the fifth pipeline.

4. The pentachloropyridine liquid loading system as claimed in claim 3, It is characterized in that It also includes a steam pipe, which is respectively installed around the first pipe, the second pipe, the third pipe, the fifth pipe and the sixth pipe.

5. The pentachloropyridine liquid on-board system as claimed in claim 1, It is characterized in that A nitrogen purge line is also included.

6. The pentachloropyridine liquid on-board system as claimed in claim 5, It is characterized in that Also includes baghouse dust collector.

7. The pentachloropyridine liquid on-board system according to any one of claims 1 to 6, It is characterized in that An interlayer is also arranged in the intermediate tank, and the interlayer is respectively connected with a heat transfer oil inlet pipe and a heat transfer oil outlet pipe.

8. The pentachloropyridine liquid on-board system as claimed in claim 7, It is characterized in that The intermediate tank is also connected to a first tail gas outlet pipe.

9. The pentachloropyridine liquid on-board system as claimed in claim 3, It is characterized in that It also includes a flow meter, the first intermediate pump and the second intermediate pump are respectively connected to the inlet of the flow meter, and the fifth pipeline and the sixth pipeline are respectively connected to the outlet of the flow meter.

10. The pentachloropyridine liquid on-board system as claimed in claim 6, It is characterized in that The bag filter is also connected to a second tail gas outlet pipe.

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