Phosphorus pentafluoride generation system for lithium hexafluorophosphate generator

Abstract

The utility model discloses a phosphorus pentafluoride generating system for a lithium hexafluorophosphate generator. The phosphorus pentafluoride generating system comprises a phosphorus pentafluoride generator, a phosphorus pentachloride feeding valve, a phosphorus pentafluoride reaction valve, a phosphorus pentafluoride feeding valve and a feeding emptying valve, one end of the phosphorus pentachloride feeding valve is connected to a phosphorus pentachloride positive pressure sending tank through a pipeline, the other end of the phosphorus pentachloride feeding valve is connected to one end of the phosphorus pentafluoride reaction valve through a pipeline, and the other end of the phosphorus pentafluoride reaction valve is connected to a feeding port of the phosphorus pentafluoride generator; a discharge port of the phosphorus pentafluoride generator is respectively connected to one end of the phosphorus pentafluoride feeding valve and one end of the feeding emptying valve through pipelines, the other end of the phosphorus pentafluoride feeding valve is connected to the lithium hexafluorophosphate generator through a gas filter, and the other end of the feeding emptying valve is connected to a tail gas collecting device through a pipeline. According to the utility model, the feeding misoperation can be eliminated, the feeding safety is ensured, and the feeding can be controlled to be correct.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical process equipment, in particular to a phosphorus pentafluoride generating system for a lithium hexafluorophosphate generator. Background Art

[0002] With the growing demand for lithium hexafluorophosphate (LFP), the primary raw material for LFP is phosphorus pentachloride. Due to the high volume of phosphorus pentachloride used in the production process and the large number of phosphorus pentachloride emitters, the process previously involved opening the phosphorus pentafluoride generator feed valve to allow the phosphorus pentafluoride delivery system to deliver the feed to the LFP generator. However, this method could lead to incorrect feeding, potentially causing the feed to enter the reacting phosphorus pentafluoride generator, posing a safety hazard. It could also result in inaccurate statistical quantities, impacting the accuracy of material statistics.

[0003] Therefore, those skilled in the art are committed to developing a phosphorus pentafluoride generation system for a lithium hexafluorophosphate generator to overcome the problems of the prior art. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to ensure the safety of phosphorus pentafluoride feeding and to be able to understand and control the amount of phosphorus pentafluoride in a timely manner.

[0005] To achieve the above-mentioned object, the utility model provides a phosphorus pentafluoride generation system for a lithium hexafluorophosphate generator, comprising a phosphorus pentafluoride generator, a phosphorus pentachloride feeding valve, a phosphorus pentafluoride reaction valve, a phosphorus pentafluoride feeding valve, and a feeding and venting valve; one end of the phosphorus pentachloride feeding valve is connected to a phosphorus pentachloride positive pressure sending tank via a pipeline, and the other end is connected to one end of the phosphorus pentafluoride reaction valve via a pipeline; the other end of the phosphorus pentafluoride reaction valve is connected to the feed port of the phosphorus pentafluoride generator; the discharge port of the phosphorus pentafluoride generator is connected to one end of the phosphorus pentafluoride feeding valve and the feeding and venting valve via pipelines, respectively; the other end of the phosphorus pentafluoride feeding valve is connected to the lithium hexafluorophosphate generator via a gas filter; and the other end of the feeding and venting valve is connected to an exhaust gas collection device via a pipeline.

[0006] Furthermore, the other end of the phosphorus pentachloride feeding valve is connected to one end of the phosphorus pentafluoride reaction valve through a hose, the discharge port of the phosphorus pentafluoride generator is connected to one end of the phosphorus pentafluoride feeding valve through a concentric reducer and a hose, and the discharge port of the phosphorus pentafluoride generator is connected to one end of the feeding and venting valve through a concentric reducer.

[0007] Furthermore, the discharge port of the phosphorus pentafluoride generator is connected to one end of the feeding and venting valve through a concentric reducing pipe joint.

[0008] Furthermore, the other end of the feeding and venting valve is connected to the tail gas collection device through a hose.

[0009] Furthermore, the phosphorus pentafluoride generator also includes a hydrogen fluoride inlet and an electric stirrer.

[0010] Furthermore, the phosphorus pentachloride feeding valve includes a dual valve position feedback module, and the dual valve position feedback module is respectively connected to the phosphorus pentafluoride reaction valve, the phosphorus pentafluoride feeding valve and the feeding and venting valve.

[0011] Furthermore, the phosphorus pentachloride feeding valve, the phosphorus pentafluoride reaction valve, the phosphorus pentafluoride feeding valve and the feeding and venting valve are pneumatic valves.

[0012] Furthermore, the phosphorus pentafluoride feeding valve includes a flow control module.

[0013] Furthermore, an emergency stop switch is included, and the emergency stop switch is respectively connected to the phosphorus pentachloride feeding valve, the phosphorus pentafluoride reaction valve, the phosphorus pentafluoride feeding valve and the feeding and venting valve.

[0014] Furthermore, it also includes a control unit, which is respectively connected to the phosphorus pentachloride feeding valve, the phosphorus pentafluoride reaction valve, the phosphorus pentafluoride feeding valve and the feeding and venting valve by signals.

[0015] The advantages of the utility model are that the utility model can eliminate incorrect feeding operations, ensure feeding safety, and can control feeding correctly.

[0016] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a preferred embodiment of the utility model.

[0018] Among them, 1-phosphorus pentafluoride generator, 2-phosphorus pentachloride feeding valve, 3-phosphorus pentafluoride reaction valve, 4-phosphorus pentafluoride feeding valve, 5-feeding vent valve, 6-phosphorus pentachloride positive pressure sending tank, 7-gas filter, 8-exhaust gas collection device, 9-hose, 10-concentric reducer pipe joint, 11-hydrogen fluoride air inlet, 12-electric stirrer, 13-emergency stop switch, 14-control unit. DETAILED DESCRIPTION

[0019] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0020] In the drawings, components with identical structures are denoted by the same reference numerals, and components with similar structures or functions are denoted by similar reference numerals. The dimensions and thicknesses of each component shown in the drawings are arbitrary and are not limited by the present invention. For clarity, the thicknesses of components in some places in the drawings are exaggerated.

[0021] The main raw materials for producing lithium hexafluorophosphate are hydrogen fluoride, phosphorus pentachloride, and lithium-containing compounds. In the phosphorus pentafluoride generation system, hydrogen fluoride and phosphorus pentachloride need to react and be fed to the lithium hexafluorophosphate generator. The utility model replaces the phosphorus pentachloride feed valve in the phosphorus pentafluoride generation system with a dual-position feedback valve, and adds a phosphorus pentafluoride feed valve and a feed vent valve. The phosphorus pentachloride feed valve sends one feedback path to the phosphorus pentafluoride feed valve and feed vent valve, and adds interlock protection. Another feedback path is sent to the phosphorus pentafluoride reaction valve to implement interlock start and stop, ensuring the safety and accuracy of feed.

[0022] Example

[0023] This embodiment provides a phosphorus pentafluoride generation system for a lithium hexafluorophosphate generator, comprising a phosphorus pentafluoride generator 1, a phosphorus pentachloride feeding valve 2, a phosphorus pentafluoride reaction valve 3, a phosphorus pentafluoride feeding valve 4, and a feeding and venting valve 5; one end of the phosphorus pentachloride feeding valve 2 is connected by a pipeline to a phosphorus pentachloride positive pressure sending tank 6, and the other end is connected by a pipeline to one end of the phosphorus pentafluoride reaction valve 3; the other end of the phosphorus pentafluoride reaction valve 3 is connected to the feed port of the phosphorus pentafluoride generator 1; the discharge port of the phosphorus pentafluoride generator 1 is connected by pipeline to one end of the phosphorus pentafluoride feeding valve 4 and the feeding and venting valve 5, respectively; the other end of the phosphorus pentafluoride feeding valve 4 is connected to the lithium hexafluorophosphate generator via a gas filter 7; the other end of the feeding and venting valve 5 is connected by a pipeline to an exhaust gas collection device 8.

[0024] Preferably, the other end of the phosphorus pentachloride feeding valve 4 is connected to one end of the phosphorus pentafluoride reaction valve 3 through a hose 9 .

[0025] Preferably, the other end of the phosphorus pentafluoride reaction valve 3 is flange-connected to the feed port of the phosphorus pentafluoride generator 1 through a concentric reducing pipe joint 10 .

[0026] Preferably, the discharge port of the phosphorus pentafluoride generator 1 is connected to one end of the phosphorus pentafluoride feeding valve 4 through a concentric reducer pipe joint 10 and a hose 9 .

[0027] Preferably, the discharge port of the phosphorus pentafluoride generator 1 is connected to one end of the feeding and venting valve 5 through a concentric reducing pipe joint 10 .

[0028] Preferably, the other end of the feeding and venting valve 5 is connected to the tail gas collecting device 8 through a hose.

[0029] Preferably, the phosphorus pentafluoride generator 1 further includes a hydrogen fluoride inlet 11 and an electric stirrer 12 .

[0030] Preferably, the phosphorus pentachloride feeding valve 2 includes a dual valve position feedback module, and the dual valve position feedback module is respectively connected to the phosphorus pentafluoride reaction valve 3, the phosphorus pentafluoride feeding valve 4 and the feeding and venting valve 5 by signal.

[0031] Preferably, the phosphorus pentachloride feeding valve 2, the phosphorus pentafluoride reaction valve 3, the phosphorus pentafluoride feeding valve 4 and the feeding and venting valve 5 are pneumatic valves.

[0032] Preferably, the phosphorus pentafluoride feeding valve 4 includes a flow control module.

[0033] Preferably, an emergency stop switch 13 is further included, and the emergency stop switch 13 is respectively connected to the phosphorus pentachloride feeding valve 2, the phosphorus pentafluoride reaction valve 3, the phosphorus pentafluoride feeding valve 4 and the feeding and venting valve 5 by signals.

[0034] Preferably, a control unit 14 is further included, and the control unit 14 is respectively connected to the phosphorus pentachloride feeding valve 2, the phosphorus pentafluoride reaction valve 3, the phosphorus pentafluoride feeding valve 4 and the feeding and venting valve 5 by signals.

[0035] The above describes in detail the preferred embodiments of the present invention. It should be understood that numerous modifications and variations based on the concepts of the present invention can be made by those skilled in the art without inventive effort. Therefore, any technical solution that can be derived by a person skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology shall be within the scope of protection defined by the claims.

Claims

1. A phosphorus pentafluoride generating system for a lithium hexafluorophosphate generator, characterized in that: The invention comprises a phosphorus pentafluoride generator, a phosphorus pentachloride feeding valve, a phosphorus pentafluoride reaction valve, a phosphorus pentafluoride feeding valve and a feeding and venting valve; one end of the phosphorus pentachloride feeding valve is connected to a phosphorus pentachloride positive pressure sending tank through a pipeline, and the other end is connected to one end of the phosphorus pentafluoride reaction valve through a pipeline; the other end of the phosphorus pentafluoride reaction valve is connected to a feeding port of the phosphorus pentafluoride generator; the discharge port of the phosphorus pentafluoride generator is connected to one end of the phosphorus pentafluoride feeding valve and the feeding and venting valve through pipelines respectively; the other end of the phosphorus pentafluoride feeding valve is connected to a lithium hexafluorophosphate generator through a gas filter; and the other end of the feeding and venting valve is connected to an exhaust gas collecting device through a pipeline.

2. The phosphorus pentafluoride generating system for lithium hexafluorophosphate generator according to claim 1, characterized in that: The other end of the phosphorus pentachloride feeding valve is connected to one end of the phosphorus pentafluoride reaction valve through a hose, and the other end of the phosphorus pentafluoride reaction valve is connected to the feed port of the phosphorus pentafluoride generator through a concentric reducing pipe joint flange.

3. The phosphorus pentafluoride generating system for lithium hexafluorophosphate generator according to claim 1, characterized in that: The discharge port of the phosphorus pentafluoride generator is connected to one end of the phosphorus pentafluoride feeding valve through a concentric reducer and a hose, and the discharge port of the phosphorus pentafluoride generator is connected to one end of the feeding and venting valve through a concentric reducer.

4. The phosphorus pentafluoride generating system for lithium hexafluorophosphate generator according to claim 1, characterized in that: The other end of the feeding and venting valve is connected to the tail gas collection device through a hose.

5. The phosphorus pentafluoride generating system for lithium hexafluorophosphate generator according to claim 1, characterized in that: The phosphorus pentafluoride generator further comprises a hydrogen fluoride inlet and an electric stirrer.

6. The phosphorus pentafluoride generating system for lithium hexafluorophosphate generator according to claim 1, characterized in that: The phosphorus pentachloride feeding valve includes a dual valve position feedback module, and the dual valve position feedback module is respectively connected to the phosphorus pentafluoride reaction valve, the phosphorus pentafluoride feeding valve and the feeding and venting valve.

7. The phosphorus pentafluoride generating system for lithium hexafluorophosphate generator according to claim 1, characterized in that: The phosphorus pentachloride feeding valve, the phosphorus pentafluoride reaction valve, the phosphorus pentafluoride feeding valve and the feeding and venting valve are pneumatic valves.

8. The phosphorus pentafluoride generating system for lithium hexafluorophosphate generator according to claim 1, characterized in that: The phosphorus pentafluoride feeding valve includes a flow control module.

9. The phosphorus pentafluoride generating system for lithium hexafluorophosphate generator according to claim 1, characterized in that: It also includes an emergency stop switch, which is respectively connected to the phosphorus pentachloride feeding valve, the phosphorus pentafluoride reaction valve, the phosphorus pentafluoride feeding valve and the feeding and venting valve.

10. The phosphorus pentafluoride generating system for lithium hexafluorophosphate generator according to claim 1, characterized in that: The system further comprises a control unit, wherein the control unit is respectively connected to the phosphorus pentachloride feeding valve, the phosphorus pentafluoride reaction valve, the phosphorus pentafluoride feeding valve and the feeding and venting valve by signals.

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