A continuous filtering device for industrial yellow phosphorus

Abstract

The utility model discloses a continuous filtering device for industrial yellow phosphorus. The filtering tank body comprises an inlet section located at the top and an outlet section located at the bottom, and a plurality of filtering sections which are detachably connected in series between the inlet section and the outlet section from top to bottom. A raw material inlet and a pressurizing port are provided on the inlet section. The raw material inlet is connected with a raw material supply mechanism, and the pressurizing port is connected with a pressurized gas supply mechanism. The pressurizing port is equipped with a pressure gauge installed on the inlet section. A filtering layer is provided on the top of each filtering section and the top of the outlet section. A discharging port located below the inner filtering layer is provided on the discharging section. The discharging port is connected with a collecting mechanism. The whole device is composed of the inlet section, the outlet section and a plurality of filtering sections which are detachably connected. The filtering sections can be increased or decreased according to different process requirements, thereby effectively ensuring the filtering effect on the industrial yellow phosphorus.

Description

Technical Field

[0001] The utility model relates to the field of industrial yellow phosphorus filtering devices, in particular to a continuous filtering device for industrial yellow phosphorus. Background Art

[0002] Industrial yellow phosphorus contains a variety of impurities, which seriously affect its application scope. High-purity phosphorus chemical products are widely used. Taking high-purity phosphorus as an example, InP, GaP, etc. are important raw materials in the electronics industry and are dopants for planar epitaxial transistors and integrated circuits; in the petrochemical field, high-purity PCl3 and P2O5 are additives for advanced lubricants; in the pharmaceutical industry, high-purity phosphorus is the raw material for the production of immunosuppressants, vasodilators, brain metabolism-improving drugs and other drugs; in addition, high-purity phosphorus is also widely used in the food industry, automobile manufacturing, military industry, aviation and other fields.

[0003] Yellow phosphorus contains inorganic impurities, organic impurities and mechanical impurities, which seriously affect the application scope and economic added value of yellow phosphorus. For this reason, some scientific research institutes and universities at home and abroad are studying the filtering method of yellow phosphorus impurities. However, due to the complexity of yellow phosphorus impurities, the devices for filtering yellow phosphorus in the existing technology have problems such as limited filtering effect. Utility Model Content

[0004] The utility model aims to provide a continuous filtering device for industrial yellow phosphorus to solve the problems existing in the above-mentioned prior art. The whole device is composed of an inlet section, an outlet section and a plurality of filter sections which can be detachably connected. Then, according to different process requirements, the filter sections can be increased or decreased, thereby effectively ensuring the filtering effect on industrial yellow phosphorus.

[0005] To achieve the above-mentioned purpose, the utility model provides the following scheme: The utility model provides a continuous filtering device for industrial yellow phosphorus, including a filtering tank body, the filtering tank body including an inlet section located at the top and an outlet section located at the bottom, and a plurality of filtering sections which are detachably connected in series between the inlet section and the outlet section from top to bottom, the inlet section is provided with a raw material inlet and a pressurizing port, the raw material inlet is connected with a raw material supply mechanism, the pressurizing port is connected with a pressurized gas supply mechanism, and the pressurizing port is equipped with a pressure gauge installed on the inlet section, the top of each filtering section and the top of the outlet section are provided with a filtering layer, and the discharging section is provided with a discharging port located below the filtering layer therein, and the discharging port is connected with a collecting mechanism.

[0006] Preferably, a first annular flange and a second annular flange that fit together are provided between the feed section and the filtration section, between two adjacent filtration sections, and between the filtration section and the outlet section. The first annular flange is tightly sleeved on the outer peripheral side of the second annular flange, and a sealing ring is coaxially provided between the first annular flange and the second annular flange.

[0007] Preferably, a plurality of buckle structures are connected between the feed section and the filtering section, between two adjacent filtering sections, and between the filtering section and the outlet section, and the buckle structures are evenly spaced along the circumference of the filtering tank body.

[0008] Preferably, each of the filter layers is equipped with a stirring brush located above it, and the stirring brush includes a stirring bracket coaxially rotatably connected to the filter tank body, and the bottom of the stirring bracket is provided with a brush body abutting against the upper surface of the filter layer.

[0009] Preferably, a stirring motor is provided at the top of the feeding section, and the output shaft of the stirring motor coaxially rotates and extends into the feeding section and extends to the discharging section, and the output shaft coaxially rotates through each of the filtering layers, and each of the stirring brackets is connected to the output shaft.

[0010] Preferably, the output shaft is divided into a plurality of sub-shafts along its axial direction which are detachably connected in sequence, each of the stirring brushes is correspondingly installed on each of the sub-shafts, and each of the filter layers is provided with a fixed bearing coaxial with the sub-shaft, the outer ring of the fixed bearing is fixed on the filter layer, and its two ends respectively pass through two sides of the filter layer, and the two ends of the inner ring of the fixed bearing are detachably connected to the corresponding sub-shafts.

[0011] Preferably, a washing liquid inlet is provided at the feeding section, and the washing liquid inlet is connected to a washing liquid supply mechanism, and a sewage outlet is provided at the bottom end of each of the filtering sections and the discharging section.

[0012] Preferably, there is a gap between two adjacent filter layers for buffering the raw material.

[0013] Preferably, the filter layer comprises a support layer, an activated carbon layer, a filter screen and a filling layer which are sequentially distributed from bottom to top, the support layer is provided with a gap for raw materials to pass through, and the filling layer is filled with a rigid material for intercepting impurities.

[0014] Preferably, the filtration layer includes the support layer, the anion resin layer, the cation resin layer, the filter mesh, the activated carbon layer, the catalyst layer and the filling layer which are sequentially distributed from bottom to top, and the anion resin layer, the cation resin layer and the catalyst layer are all provided with a percolation gap for the raw materials to pass through the array.

[0015] Compared with the prior art, the utility model has achieved the following technical effects:

[0016] The filter tank body in the utility model comprises an inlet section located at the top and an outlet section located at the bottom, and a plurality of filter sections which are detachably connected in series between the inlet section and the outlet section from top to bottom. A raw material inlet and a pressurizing port are provided on the inlet section. The raw material inlet is connected with a raw material supply mechanism, and the pressurizing port is connected with a pressurized gas supply mechanism, and the pressurizing port is equipped with a pressure gauge installed on the inlet section. A filter layer is provided on the top of each filter section and the top of the outlet section, and a discharge port located below the inner filter layer is provided on the discharge section, and the discharge port is connected with a material collecting mechanism. The whole device is composed of an inlet section, an outlet section and a plurality of filter sections which are detachably connected. Then, according to different process requirements, the filter sections can be increased or decreased, and the filtering effect on industrial yellow phosphorus is effectively guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the internal structure of the overall structure of the utility model;

[0020] Figure 3 This is a front view of the filter layer of the utility model;

[0021] Among them, 1-raw material inlet, 2-driving motor, 3-output shaft, 4-buckle structure, 5-fixed bearing, 6-support column, 7-stirring brush, 8-filling layer, 9-support seat, 10-filter screen, 11-discharge port, 12-drain port, 13-sub-axis, 14-tank support arm, 15-pressurization port, 16-washing liquid inlet, 17-pressure gauge, 18-filling grid, 19-outer ring, 20-inner ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model aims to provide a continuous filtering device for industrial yellow phosphorus to solve the problems existing in the above-mentioned prior art. The whole device is composed of an inlet section, an outlet section and a plurality of filter sections which can be detachably connected. Then, according to different process requirements, the filter sections can be increased or decreased, thereby effectively ensuring the filtering effect on industrial yellow phosphorus.

[0024] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] like Figures 1 to 3 As shown, this embodiment provides a continuous filtering device for industrial yellow phosphorus, including a filtering tank body, preferably the bottom of the filtering tank body is supported by a tank body support arm 14 to support it above the working ground, the filtering tank body includes an inlet section at the top and an outlet section at the bottom, and a plurality of filtering sections that are detachably connected in series between the inlet section and the outlet section from top to bottom, a raw material inlet 1 and a pressurizing port 15 are provided on the inlet section, the raw material inlet 1 is connected to a raw material supply mechanism, and the pressurizing port 15 is connected to a pressurized gas supply mechanism, preferably the pressurized gas supply mechanism adopts A nitrogen supply mechanism is used to provide nitrogen of the required pressure in the inlet section, and the pressure port 15 is equipped with a pressure gauge 17 installed on the inlet section. The top of each filter section and the top of the outlet section are provided with a filter layer. Industrial yellow phosphorus enters from the raw material inlet 1 and is filtered step by step through each filter layer under a slightly positive pressure condition. The discharge section is provided with a discharge port 11 located below the inner filter layer. The discharge port 11 is connected to a collection mechanism. Pure yellow phosphorus flows out from the discharge port 11 and is collected by the collection mechanism. Impurities of different particle sizes are left in the filter layer. The entire device is composed of an inlet section, an outlet section and a plurality of filter sections that can be detachably connected. According to different process requirements, the filter section can be increased or decreased to effectively ensure the filtering effect of industrial yellow phosphorus.

[0026] As a preferred embodiment of the utility model, the inlet section, the filter section and the outlet section are all provided with an interlayer, and a heat-conducting medium can be passed into the interlayer. The heat-conducting medium can be heat-conducting oil, etc. The inlet section, the filter section and the outlet section are all provided with a heat-conducting medium inlet and a heat-conducting medium outlet. The heat-conducting medium inlet of the inlet section is connected to the outlet of the heat-conducting medium circulation machine, the heat-conducting medium outlet of the inlet section is connected to the heat-conducting medium inlet of the first-stage filter section, the heat-conducting medium outlet of the first-stage filter section is connected to the heat-conducting medium inlet of the next-stage filter section, and so on, until the heat-conducting medium outlet of the last-stage filter section is connected to the heat-conducting medium inlet of the outlet section, and the heat-conducting medium outlet of the outlet section is connected to the inlet of the heat-conducting medium circulation machine. The inlet section, the filter section and the outlet section are all provided with a thermocouple feedback mechanism to adjust the temperature in the entire filter tank body in real time according to the filtration situation.

[0027] Among them, a first annular flange and a second annular flange that are interlocked are provided between the feed section and the filtration section, between two adjacent filtration sections, and between the filtration section and the outlet section. The first annular flange is tightly sleeved on the outer peripheral side of the second annular flange, and a sealing ring is coaxially provided between the first annular flange and the second annular flange.

[0028] Furthermore, a plurality of buckle structures 4 are connected between the feed section and the filtering section, between two adjacent filtering sections, and between the filtering section and the outlet section, and the buckle structures 4 are evenly spaced along the circumference of the filtering tank body.

[0029] Each filter layer is equipped with a stirring brush 7 located above it, and the stirring brush 7 includes a stirring bracket coaxially connected to the filter tank body, and the bottom of the stirring bracket is provided with a brush body abutting against the upper surface of the filter layer. Specifically, a stirring motor is provided at the top of the feed section, and the output shaft 3 of the stirring motor coaxially rotates and extends into the feed section and extends to the discharge section, and the output shaft 3 coaxially rotates through each filter layer, and each stirring bracket is connected to the output shaft 3. When there are too many impurities in the filter layer and affect the operation of the equipment, the stirring motor is started to drive the stirring bracket and its brush body to wash the impurities adhering to the filter layer.

[0030] As a preferred embodiment, the output shaft 3 is divided into a plurality of sub-shafts 13 that are detachably connected in sequence along its axial direction, each stirring brush 7 is correspondingly mounted on each sub-shaft 13, each filter layer is provided with a fixed bearing 5 coaxial with the sub-shaft 13, the outer ring 19 of the fixed bearing 5 is fixed on the filter layer, and its two ends respectively pass through the two sides of the filter layer, and the two ends of the inner ring 20 of the fixed bearing 5 are detachably connected to the corresponding sub-shaft 13. Preferably, both ends of the inner ring 20 are provided with a convex or groove-shaped structure, and the end portion where the corresponding sub-shaft 13 is connected to the inner ring 20 of the fixed bearing 5 is provided with a groove-shaped or convex structure, and the convex structure and the groove-shaped structure are non-circular structures to ensure that the two rotate synchronously without relative sliding after being fitted together.

[0031] As a preferred embodiment of the utility model, a washing liquid inlet 16 is provided at the feed section, and the washing liquid inlet 16 is connected to a washing liquid supply mechanism, and a sewage outlet 12 is provided at the bottom of each filtering section and the discharging section. While the stirring brush 7 brushes the filter layer to remove impurities, the washing liquid is introduced into the washing liquid inlet 16 to flush the filter layer, and the washing liquid with various solid impurities is discharged from the filter tank through the sewage outlet 12. The preferred discharge port 11 can also be used as the washing liquid inlet 16, and the sewage outlet 12 of the filter section and the raw material inlet 1 are used for sewage discharge, so that the washing liquid is introduced after the filtration is completed to backwash the filter layer.

[0032] Furthermore, there is a space between two adjacent filter layers for buffering raw materials. Since the raw materials may carry a large amount of solid impurities during the operation of the equipment, the filter layer may be blocked, resulting in an instantaneous pressure increase. The interval of the buffer raw materials has the function of pressure buffering and regulation. Buffering: When the filter screen 10 with a smaller aperture in the lower layer is blocked, the intervention of the upper yellow phosphorus will first gradually compress the hollow nitrogen, and the pressure in the filter tank will not rise suddenly, avoiding damage to the filter tank under high pressure conditions, improving safety performance, providing staff and system response time, and reducing high-pressure accidents during operation. Regulation: During normal operation, due to the presence of a certain amount of nitrogen in the filter tank, the gas will be compressed to varying degrees with the filtration speed of the medium. When the flow rate at the inlet end is equal to the flow rate at the outlet end, the nitrogen will no longer be compressed and the pressure will be kept constant. At the same time, the pressure will be fine-tuned according to the different flow rates at both ends. In addition, the interval of the buffer raw materials is conducive to the installation of the stirring brush 7; and it is convenient to change the filtration level, filtration order, and the addition and reduction of special function filter layers according to process requirements, which is more conducive to installation and disassembly.

[0033] The filter layer includes a support layer, an activated carbon layer, a filter screen 10 and a filling layer 8 which are sequentially distributed from bottom to top. The support layer is provided with a space for the raw material to pass through, and the filling layer 8 is filled with a rigid material for intercepting impurities. Preferably, the filling layer 8 generally selects a rigid material, which serves as the first-stage filtration of industrial yellow phosphorus and intercepts the most impurities. The rigid material is preferably quartz sand, etc., and the activated carbon layer, the filter screen 10, etc. are used for the second-stage filtration of industrial yellow phosphorus. Pure yellow phosphorus flows out from the bottom, and impurities of different particle sizes are retained in the filter screen 10, the activated carbon layer and the filling layer 8, and the filter screen 10 is nano-grade to fully filter the industrial yellow phosphorus.

[0034] It should be noted that if the upper layer directly uses a nano-scale filter 10, the system may be blocked after a very short operation time. At the same time, the filling layer 8 is easy to clean and replace, and the use cost is low.

[0035] Preferably, the filter layer includes a support layer, an anion resin layer, a cation resin layer, a filter screen 10, an activated carbon layer, a catalyst layer and a filling layer 8 which are sequentially arranged from bottom to top, and the anion resin layer, the cation resin layer and the catalyst layer are provided with a percolation gap for the raw material to pass through. In addition, the filter screen 10 can be added step by step, that is, the filter screen 10 is provided between two adjacent layers to intercept impurities and prevent the loss of materials in each layer.

[0036] The filter 10 generally only has a separation effect on solid impurities in the medium. In the filter layer, different material layers can be selected according to the process and product requirements. Quartz sand is used for solid impurity filtration, activated carbon is used for adsorption of organic matter and some chemical substances, ion resin is used for separation of ionic compounds, charged substances, acid radicals, metal ions and other substances in the medium, and the catalyst layer promotes the progress of a certain reaction in the medium. This design can realize a system to separate multiple impurities in the medium. The catalyst layer uses small-sized glass beads and metal catalysts to deeply promote the oxidation reaction process.

[0037] Different filter materials have different effective activities / action times, and the raw material media that can be processed by each unit of filter material are also different. At the same time, according to their physical properties, most filter materials can continue to act on the next batch of raw material media after backwashing. For example, cationic resins will reach adsorption saturation after a period of use. When backwashed with hydrochloric acid, they can be regenerated and have more than 80% of the original ion adsorption capacity. Replacement is a non-essential measure taken when the filter material is completely inactivated or poisoned.

[0038] As a preferred embodiment of the utility model, the support layer includes a plurality of support seats 9 fixed on the inner walls of each section structure of the filter tank body, and support columns 6 corresponding to each support seat 9. One end of the support column 6 is overlapped on the support seat 9, and the corresponding support seat 9 is provided with a groove structure embedded with the end of the support column 6. The other end of the support column 6 is connected to the outer ring 19 of the fixed bearing 5; each support column 6 is evenly spaced along the circumference of the filter tank body, and there is a gap between two adjacent support columns 6 for raw materials to pass through.

[0039] In order to ensure effective support for each filter layer, a packing grid 18 is provided above the support layer. The packing grid 18 has an array of through holes. The activated carbon layer is arranged above the packing grid 18 to prevent the activated carbon layer from falling while ensuring the passage of the raw materials. Filter meshes 10 of different pore sizes are provided according to process requirements. The filter mesh 10 preferably uses a stainless steel filter mesh 10.

[0040] The specific use process of the entire device is as follows:

[0041] (1) Start the heat transfer medium circulation machine to pass the heat transfer medium into the interlayer of each section of the filter tank body. After the temperature reaches the process requirement, nitrogen is filled into the filter tank body through the pressure port 15 to repeatedly replace it multiple times;

[0042] (2) Open the raw material inlet and inject the industrial yellow phosphorus to be filtered into the feeding section, and the industrial yellow phosphorus is filtered or reacted step by step under a slightly positive pressure condition;

[0043] (3) After filtration, the yellow phosphorus product flows out from the discharge port 11 and enters the collecting mechanism;

[0044] (4) After working for a period of time, the filter tank is flushed: the raw material inlet 1, the pressure port 15, and the discharge port 11 are closed, the washing liquid inlet 16 and the sewage outlet 12 are opened, and the washing liquid is pumped into the filter tank. At the same time, the drive motor 2 is started to drive the stirring brush 7 to flush the filter layer; after the impurities in the filter layer are cleaned, the drive motor 2 and the sewage outlet 12 are closed, and nitrogen is flushed in for replacement, and the filtration is repeated.

[0045] Adaptive changes made according to actual needs are all within the protection scope of this utility model.

[0046] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0047] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A continuous filtering device for industrial yellow phosphorus, characterized in that: The invention comprises a filter tank body, wherein the filter tank body comprises an inlet section at the top and an outlet section at the bottom, and a plurality of filter sections which are detachably connected in series between the inlet section and the outlet section from top to bottom. The inlet section is provided with a raw material inlet and a pressurizing port, the raw material inlet is connected with a raw material supply mechanism, the pressurizing port is connected with a pressurized gas supply mechanism, and the pressurizing port is equipped with a pressure gauge installed on the inlet section. A filter layer is provided on the top of each of the filter sections and the top of the outlet section, and the outlet section is provided with a discharge port located below the filter layer therein, and the discharge port is connected with a material collection mechanism.

2. The continuous filtering device for industrial yellow phosphorus according to claim 1, characterized in that: A first annular flange and a second annular flange that fit together are provided between the inlet section and the filter section, between two adjacent filter sections, and between the filter section and the outlet section. The first annular flange is tightly sleeved on the outer peripheral side of the second annular flange, and a sealing ring is coaxially provided between the first annular flange and the second annular flange.

3. The continuous filtering device for industrial yellow phosphorus according to claim 2, characterized in that: A plurality of buckle structures are connected between the inlet section and the filter section, between two adjacent filter sections, and between the filter section and the outlet section, and the buckle structures are evenly spaced along the circumference of the filter tank body.

4. The continuous filtering device for industrial yellow phosphorus according to claim 2 or 3, characterized in that: Each of the filter layers is equipped with a stirring brush located above it, and the stirring brush includes a stirring bracket coaxially connected to the filter tank body, and a brush body abutting against the upper surface of the filter layer is provided at the bottom of the stirring bracket.

5. The continuous filtering device for industrial yellow phosphorus according to claim 4, characterized in that: A stirring motor is provided at the top of the inlet section, and the output shaft of the stirring motor coaxially rotates and extends into the inlet section and extends to the outlet section. The output shaft coaxially rotates and passes through each of the filter layers, and each of the stirring brackets is connected to the output shaft.

6. The continuous filtering device for industrial yellow phosphorus according to claim 5, characterized in that: The output shaft is divided into a plurality of sub-shafts along its axial direction which are detachably connected in sequence. Each stirring brush is correspondingly installed on each sub-shaft. A fixed bearing coaxial with the sub-shaft is provided at each filter layer. The outer ring of the fixed bearing is fixed on the filter layer, and its two ends respectively pass through the two sides of the filter layer. The two ends of the inner ring of the fixed bearing are detachably connected to the corresponding sub-shaft.

7. The continuous filtering device for industrial yellow phosphorus according to claim 6, characterized in that: A washing liquid inlet is provided at the inlet section, and the washing liquid inlet is connected to a washing liquid supply mechanism. A sewage outlet is provided at the bottom end of each of the filtering sections and the outlet section.

8. The continuous filtering device for industrial yellow phosphorus according to claim 7, characterized in that: There is a space between two adjacent filter layers for buffering raw materials.

9. The continuous filtering device for industrial yellow phosphorus according to claim 8, characterized in that: The filter layer comprises a support layer, an activated carbon layer, a filter screen and a filling layer which are sequentially distributed from bottom to top. The support layer is provided with a space for raw materials to pass through, and the filling layer is filled with a rigid material for intercepting impurities.

10. The continuous filtering device for industrial yellow phosphorus according to claim 8, characterized in that: The filtration layer includes a support layer, an anion resin layer, a cation resin layer, a filter screen, an activated carbon layer, a catalyst layer and a filling layer which are sequentially distributed from bottom to top. The anion resin layer, the cation resin layer and the catalyst layer are all provided with a percolation gap for the raw materials to pass through.

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